CN220051929U - Reciprocating tool bit assembly - Google Patents

Abstract

The utility model relates to an integrated reciprocating tool bit assembly, which is characterized in that a limiting piece is arranged at the bottom of an outer tool rest to limit the reciprocating swing of the inner tool rest provided with an inner blade in a swing space; a floating mechanism and a removable auxiliary positioning mechanism are arranged between the limiting piece and the inner cutter frame, and the auxiliary positioning mechanism is used for fixing the inner cutter frame in the outer cutter frame so that the highest point of the bending part of the inner cutter blade is positioned at a preset height in the outer cutter frame; the two ends of the outer blade are respectively connected with the outer blade rest, and the middle of the outer blade is used for forming a bending part by taking the bending radian of the inner blade as a reference, so that the outer blade, the outer blade rest, the inner blade and the inner blade rest are combined into a whole, and then the auxiliary positioning mechanism is removed. The utility model has the beneficial effects that the limit part is used for limiting the reciprocating swing of the inner knife rest and the inner knife blade in the outer knife rest, and the outer knife blade is bent and formed by taking the bending part of the inner knife blade as a reference, so that the bending consistency of the outer knife blade and the inner knife blade can be greatly ensured, and the phenomena of napping, hair tearing and the like are avoided while the fitting degree is ensured.

Description

Reciprocating tool bit assembly

Technical Field

The utility model relates to a beard trimming device, in particular to an integrated reciprocating cutter head assembly which is mainly applied to the fields of shavers and the like.

Background

The prior reciprocating cutter head assembly is basically composed of an independent outer cutter blade assembly (41) and an independent inner cutter blade assembly (42) as shown in fig. 4B in China patent CN 105328720B, wherein the outer cutter blade assembly (41) is composed of an outer cutter blade base (45) and an outer cutter blade (44) which is bent into a U shape along the outer cutter blade base (45); the inner blade assembly (42) is composed of an inner blade base (47) and an inner blade (46) bent in a U-shape along the inner blade base (47).

During assembly, the inner blade assembly (42) is arranged in the outer blade assembly (41), in order to ensure the fitting degree of the inner blade (46) and the outer blade (44), the shaving trimming performance is improved, the top pressure springs (1A, 1B) are additionally arranged at two ends of the bottom of the inner blade assembly (42), the outer surface of the inner blade (46) is fitted with the inner surface of the outer blade (44) by utilizing the elasticity of the top pressure springs (1A, 1B), so that the shaving trimming performance of the cutter head assembly can be ensured, and meanwhile, the upper and lower floating and automatic resetting of the inner blade (46) can be realized by utilizing the top pressure springs (1A, 1B), so that the use safety of the inner blade (46) is improved.

In order to ensure the working stability of the reciprocating cutter head assembly, two ends of the outer cutter head assembly (41) are respectively clamped with the cutter head mounting piece (43), the inner cutter head assembly (42) is arranged in the outer cutter head assembly (41), and the jacking springs (1A, 1B) are arranged between the bottom plate of the cutter head mounting piece (43) and the bottom of the inner cutter head assembly (42) and used for driving the inner cutter head assembly (42) to be attached to the outer cutter head assembly (41), so that the reciprocating cutter head assembly is formed into a whole.

Because the existing reciprocating cutter head assembly is integrally assembled through the cutter blade mounting piece (43), the material cost of the reciprocating cutter head assembly is relatively increased, and the assembly benefit is reduced. Secondly, the U-shaped bending of the outer blade (44) and the U-shaped bending of the inner blade (41) are respectively and independently formed along the corresponding outer blade base (45) and inner blade base (47), so that the consistency of the U-shaped bending of the outer blade (44) and the U-shaped bending of the inner blade (41) cannot be ensured, the U-shaped bending surface of the inner blade (41) cannot be completely attached to the U-shaped bottom surface of the outer blade (44) during assembly, and phenomena such as napping or hair blocking and the like are generated in the shaving process of the reciprocating type cutter head assembly, and the hair trimming performance and the use comfort of the cutter head assembly are reduced.

Disclosure of Invention

In order to solve the above technical problems; the utility model provides the integrated reciprocating cutter head assembly, which not only can realize the integration of the reciprocating cutter head assembly and reduce the material cost of the cutter head assembly, but also can ensure the fit degree of the inner cutter blade and the outer cutter blade, avoid the phenomena of napping or blocking hair and the like in the shaving process and improve the shaving benefit by optimizing the structure of the reciprocating cutter head assembly and improving the assembly process of the reciprocating cutter head assembly.

In order to solve the technical problems, the technical scheme adopted by the utility model is that the integrated reciprocating tool bit assembly comprises an outer blade, an outer tool rest, an inner blade and an inner tool rest, wherein the middle of the inner blade is bent to form a bending part, two ends of the bending part are respectively connected with two side walls of the inner tool rest, the inner tool rest can horizontally reciprocate and swing and is arranged in the outer tool rest, the periphery of the outer tool rest is sealed to form a swinging space, and a limiting piece is arranged at the bottom of the outer tool rest to limit the reciprocating swinging of the inner tool rest provided with the inner blade in the swinging space; a floating mechanism and a removable auxiliary positioning mechanism are arranged between the limiting piece and the inner tool rest, and the auxiliary positioning mechanism is used for fixing the inner tool rest in the outer tool rest so that the highest point of the bending part of the inner blade arranged on the inner tool rest is positioned at a preset height in the outer tool rest; the two ends of the outer blade are respectively connected and fixed with the two side walls of the outer blade holder, the middle of the outer blade holder takes the bending radian of the inner blade as a reference to form a bending part, the outer blade holder, the inner blade and the inner blade holder are combined into a whole, then the auxiliary positioning mechanism is removed, and the inner blade holder always keeps the outer surface of the bending part of the inner blade attached to the inner surface of the bending part of the outer blade under the support of the floating mechanism.

Preferably, the auxiliary positioning mechanism comprises a first clamping hook fixedly connected with the limiting piece and a first clamping groove arranged on the inner side wall of the two end plates of the inner knife rest, when the floating mechanism supports the inner knife rest, the first clamping hook is clamped into the first clamping groove, the highest bending point of the inner knife blade arranged on the inner knife rest is positioned at a preset height in the outer knife rest, two ends of the outer knife blade are fixedly connected with the two side walls of the outer knife rest, the middle of the outer knife blade is bent and formed by taking the bending radian of the inner knife blade as a reference, and after the outer knife blade, the outer knife rest, the inner knife blade and the inner knife rest are combined into a whole, the first clamping hook is removed, so that the inner knife rest is supported by the floating mechanism to drive the bending part of the inner knife blade to be always attached to the bending part of the outer knife blade.

Preferably, the auxiliary positioning mechanism comprises a positioning column, a positioning hole, a limiting hole and a positioning rod, wherein the positioning column is arranged on the inner surface of an end plate at one end of two ends of the outer tool rest, and the positioning hole is arranged in the end plate at the other end of the outer tool rest; the limiting holes are arranged on two end plates coaxially arranged at two ends of the inner tool rest; the locating post inserts in one of them spacing hole of interior knife rest, the locating lever inserts in another spacing hole and the locating hole makes the highest point of the interior blade bending portion of installing on interior knife rest be in the predetermined high department of outer knife rest, outer blade both ends are connected fixedly with outer knife rest both sides wall respectively and the centre uses the crooked radian of interior blade to be the benchmark bending molding, behind with outer blade, outer knife rest, interior blade and interior knife rest combination as an organic whole, remove the locating lever and break away from locating post and spacing hole mutually, make interior knife rest keep laminating with the bending portion internal surface of outer blade all the time under floating mechanism's support.

Preferably, the auxiliary positioning mechanism comprises a limiting plate, a limiting rod and a tension spring, wherein the limiting rod is provided with two limiting plates at intervals and respectively penetrates through the limiting plate to enable two ends of the limiting rod to be arranged outside the limiting plate, a second clamping hook is arranged at the end part of the outer surface of the upper end of the two limiting rods, a spring seat is arranged on the inner surface of the upper end, the two ends of the tension spring are sleeved outside the spring seat to enable the upper end of the limiting rod to be propped open, the second clamping hook is clamped into a second slot hole formed in the inner tool rest, the highest point of the bending part of the inner blade arranged on the inner tool rest is located at a preset height in the outer tool rest, two ends of the outer blade are respectively connected and fixed with two side walls of the outer tool rest, the middle part of the outer blade is formed by bending the inner blade in a standard, after the outer blade, the outer tool rest, the inner blade and the inner tool rest are combined into a whole, the second clamping hook is separated from the second slot hole by overcoming the elasticity of the tension spring at the upper end of the limiting rod under the action of the external force, the limiting plate and the limiting rod are removed, and the inner blade is driven to be always kept to be attached to the inner surface of the outer blade under the support of the floating mechanism.

Preferably, the limiting piece and the outer cutter frame are integrally injection molded or detachably connected into a whole.

Preferably, the limiting piece is provided with two limiting blocks which are symmetrically arranged at the bottom of the swinging space of the outer cutter frame and are integrally injection molded with the outer cutter frame, the limiting piece comprises limiting blocks, each limiting block is respectively arranged at the bottom of the swinging space of the outer cutter frame, a swinging interval is formed between the two limiting blocks, and the limiting blocks are respectively connected and fixed with the inner surfaces of two side walls of the outer cutter frame and the inner surface of the end plate at one corresponding end through limiting pieces.

Preferably, the floating mechanism is a jacking spring, spring columns are respectively arranged in the limiting block of the limiting piece and the inner cutter frame, and two ends of the jacking spring are respectively sleeved outside the spring columns so that the inner cutter frame can drive the outer surface of the inner cutter blade to keep fit with the inner surface of the outer cutter blade under the elastic action of the jacking spring.

The beneficial effects of the utility model are as follows:

1. the limiting piece is arranged at the bottom of the outer cutter frame, and the inner cutter blade, the inner cutter frame, the outer cutter blade and the outer cutter frame are combined into a whole under the limitation of the outer cutter blade and the limiting piece, so that the cutter head is convenient to assemble and install, and the installation benefit is improved; meanwhile, the outer blade and the outer blade holder can be used for protecting the inner blade, so that the damage of the outer blade or the damage of the cutting edge of the inner blade caused by the fact that the cutter head assembly is disassembled for cleaning after shaving is finished is prevented.

2. The floating mechanism is additionally arranged between the limiting piece and the inner cutter frame, when the outer cutter blade bears the reaction force generated by the hand pressing machine body, the reaction force is synchronously conducted to the inner cutter blade and the inner cutter frame, the elastic force of the floating mechanism can be overcome by the stress of the inner cutter frame to drive the inner cutter blade to move downwards, a buffer space is reserved for the deformation of the outer cutter blade, the outer cutter blade is prevented from being pressed and damaged or the cutting edge of the inner cutter blade is prevented from being damaged, the use safety of the cutter head assembly is improved, and the service life of the cutter head assembly is prolonged.

3. The removable auxiliary positioning mechanism is additionally arranged, so that the assembly sequence of the traditional cutter head assembly is changed, the integral combination of the outer cutter blade, the outer cutter frame, the inner cutter blade and the inner cutter frame can be realized, the outer cutter blade and the outer cutter frame are utilized to protect the inner cutter blade, the damage of the outer cutter blade or the damage of the cutting edge of the inner cutter blade is prevented when the cutter head assembly is cleaned, the use safety of the cutter head assembly is ensured, and the service life of the cutter head assembly is prolonged; and when the outer blade is assembled, the outer blade and the inner blade are bent and formed according to the bending part of the inner blade, so that the consistency of the bending degree of the outer blade and the bending degree of the inner blade is guaranteed to the greatest extent, the fitting degree of the outer surface of the inner blade and the inner surface of the outer blade is improved, and the defect that the shaving performance is reduced due to the fact that the bending degree is inconsistent is avoided.

Drawings

FIG. 1 is a perspective view of a first embodiment of an integrated reciprocating cutter head assembly of the present utility model

FIG. 2 is a sectional view showing the construction of the first embodiment assembled by the auxiliary positioning mechanism

FIG. 3 is an assembled sectional view of the first embodiment with the auxiliary positioning mechanism removed

FIG. 4 is a longitudinal cross-sectional view of an integrated reciprocating cutter head assembly of the present utility model

Fig. 5 is a perspective view showing a bottom view of the outer blade carrier in the first embodiment

FIG. 6 is a perspective view of a second embodiment of an integrated reciprocating cutter head assembly of the present utility model

FIG. 7 is a sectional view showing the construction of the second embodiment assembled by the auxiliary positioning mechanism

FIG. 8 is an assembled sectional view of the second embodiment removal aid positioning mechanism

FIG. 9 is a perspective view of a third embodiment of an integrated reciprocating hair head assembly of the present utility model

FIG. 10 is a sectional view showing the construction of the third embodiment assembled by the auxiliary positioning mechanism

FIG. 11 is an assembled sectional view of the removal assistance-localization real-time mechanism in the third embodiment

Fig. 12 is a perspective view of an auxiliary positioning mechanism in the third embodiment

Detailed Description

Embodiments of the utility model are further described below with reference to the accompanying drawings:

as shown in fig. 1-12, the integrated reciprocating cutter head assembly comprises an outer cutter blade 1, an outer cutter frame 2, an inner cutter blade 3 and an inner cutter frame 4, wherein the middle of the inner cutter blade 3 is bent to form a bending part, and two ends of the bending part are respectively connected with two side walls of the inner cutter frame 4. In order to prevent the technical problems that the inner blade 3 and the outer blade 1 need frequent assembly, shaving, disassembly, cleaning and reassembling cycles in the daily shaving process, the cutting edge of the inner blade 3 is easily damaged due to the influence of external factors, and the like, the periphery of the outer blade holder 2 is sealed to form a swinging space, and a limiting piece 5 is arranged at the bottom of the outer blade holder 2 to limit the reciprocating swinging of the inner blade holder 4 provided with the inner blade 3 in the swinging space under the driving of a driving mechanism (not shown in the drawing). The limiting piece 5 is arranged at the bottom of the outer cutter rest 2, the outer cutter blade 1 is required to be installed at the top of the outer cutter rest 2, and the inner cutter blade 3, the inner cutter rest 4, the outer cutter blade 1, the outer cutter rest 2 and the floating mechanism 7 can be combined into a whole under the limitation of the outer cutter blade 1 and the limiting piece 5, so that the cutter head is convenient to assemble and install, and the installation benefit is improved; meanwhile, the outer blade 1 and the outer blade rest 2 can be used for protecting the inner blade 3, so that the outer blade 1 is prevented from being damaged or the cutting edge of the inner blade 3 is prevented from being damaged when the cutter head assembly is disassembled for cleaning after shaving.

In order to avoid damage to the outer blade 1 or the inner blade 3 after being stressed and to improve the fit degree of the outer blade 1 and the inner blade 3, a floating mechanism 7 and a removable auxiliary positioning mechanism 6 are arranged between the limiting piece 5 and the inner blade holder 4, and the auxiliary positioning mechanism 6 is used for fixing the inner blade holder 4 in the outer blade holder 2 so that the highest point of the bending part of the inner blade 3 arranged on the inner blade holder 4 is positioned at a preset height in the outer blade holder 2; the two ends of the outer blade 1 are respectively connected and fixed with the two side walls of the outer blade rest 2, and the middle of the outer blade 1 takes the bending radian of the inner blade 3 as a reference to form a bending part, so that the outer blade 1, the outer blade rest 2, the inner blade 3 and the inner blade rest 4 are combined into a whole, then the auxiliary positioning mechanism 6 is removed, and the inner blade rest 4 keeps the outer surface of the bending part of the inner blade 3 to be attached to the inner surface of the bending part of the outer blade 1 all the time under the support of the floating mechanism 7. In the shaving process, the outer blade 1 is contacted with the skin surface when a user presses the machine body (not shown in the figure), the outer blade 1 is influenced by the reaction force pressed by the hand, the outer blade 1 can deform towards the inside of the cutter head assembly, the inner blade 3 is contacted with the outer blade 1, the outer blade 1 is extremely easy to be damaged or the cutting edge of the inner blade 3 is damaged by pressing under the reaction force and the top pressing of the inner blade 3, the floating mechanism 7 is additionally arranged between the limiting piece 5 and the inner cutter rest 4, when the outer blade 1 bears the reaction force generated by the hand pressing machine body, the reaction force is synchronously transmitted to the inner blade 3 and the inner cutter rest 4, the inner cutter rest 4 is stressed to overcome the elastic force of the floating mechanism 7 to drive the inner blade 3 to move downwards, the buffer space is reserved for the deformation of the outer blade 1, the cutting edge of the inner blade 3 is prevented from being damaged or damaged by pressing, the use safety of the cutter head assembly is improved, and the service life of the cutter head assembly is prolonged. Secondly, the removable auxiliary positioning mechanism 6 is additionally arranged, so that the assembly sequence of a traditional cutter head assembly can be changed, the integral combination of the outer cutter blade 1, the outer cutter frame 2, the inner cutter blade 3 and the inner cutter frame 4 can be realized, the outer cutter blade 1 and the outer cutter frame 2 are utilized to protect the inner cutter blade 3, the damage of the outer cutter blade 1 or the damage of the cutter edge of the inner cutter blade 3 caused by the disassembly of the outer cutter frame 2 and the outer cutter blade 1 for cleaning after the shaving is finished is prevented, the use safety of the cutter head assembly is ensured, and the service life is prolonged; and, can regard the bending portion of interior blade 3 as the benchmark to carry out the bending molding when the equipment outer blade 1, the biggest crookedness uniformity of assurance outer blade 1 and interior blade 3 bending portion promotes the laminating degree of the surface of interior blade 3 and the interior surface of outer blade 1, avoids causing defects such as napping, hair pulling or card hair because of the crookedness is different, guarantees the shaving performance of the travelling comfort of shaving of tool bit subassembly.

The specific description is as follows: removable means that when the outer blade 1 is installed, the outer blade 1, the outer blade holder 2, the inner blade 3, the inner blade holder 4 and the floating mechanism 7 are combined into a whole, and then the auxiliary positioning mechanism 6 is removed, so as to prevent the auxiliary positioning mechanism 6 from interfering with the operation of the inner blade holder 4 and the inner blade 3.

In the above-mentioned concept of guaranteeing the consistency of the bending degree of the outer blade 1 and the inner blade 3 by means of the auxiliary positioning mechanism 6, and improving the fitting degree of the inner blade 3 of the outer blade 1 and realizing the integrated reciprocating cutter head assembly, the present inventors also propose the following three embodiments of the auxiliary positioning mechanism 6:

example 1

As shown in fig. 1-5, the auxiliary positioning mechanism 6 comprises a first clamping hook 61 fixedly connected with the limiting piece 5 and a first clamping groove 62 arranged on the inner side wall of the two end plates 21 of the inner cutter frame 4, when the floating mechanism 7 supports the inner cutter frame 4, the first clamping hook 61 is clamped into the first clamping groove 62, the highest bending point of the inner cutter blade 3 mounted on the inner cutter frame 4 is positioned at a preset height position in the outer cutter frame 2, two ends of the outer cutter blade 1 are fixedly connected with the two side walls of the outer cutter frame 2, the middle position of the two ends of the outer cutter blade 1 is formed by bending by taking the bending radian of the inner cutter blade 3 as a reference, and after the outer cutter blade 1, the outer cutter frame 2, the inner cutter blade 3 and the inner cutter frame 4 are combined into a whole, the first clamping hook 61 is removed, so that the inner cutter frame 4 is driven to keep the bending part of the inner cutter blade 3 to be attached to the bending part of the outer cutter blade 1 under the support of the floating mechanism 7. In the actual production process, the first hook 61 is fixed on the limiting piece 5, when the outer blade 1 is fixed with the outer blade holder 2 by bending and forming by taking the bending part of the inner blade 3 as a reference, the first hook 61 fixed on the limiting piece 5 is sheared by a tool such as scissors, and the inner blade holder 4 can play a role in supporting the inner blade holder 4 after losing the limitation of the first hook 61, so that the outer surface of the inner blade 3 can be always adhered to the inner surface of the outer blade 1. In the shaving process, the floating mechanism 7 not only can ensure the fitting degree of the inner blade 3 and the outer blade 1 to improve the shaving performance and the shaving benefit, but also can avoid phenomena such as hair pulling and hair tearing, and the use comfort of the shaver is improved. And when the outer blade 1 bears great skin extrusion, can shrink downwards and drive the internal knife rest 4 and the internal blade 3 to displace downwards and provide certain buffer space for the deformation of outer blade 1 to prevent that outer blade 1 from being broken and damaging the cutting edge of internal blade 3 by internal blade 3 after being pressed, improve the safety in utilization of outer blade 1 and internal blade 3. Secondly, restrict interior knife rest 4 and interior blade 3 in outer knife rest 2 as an organic whole through the cooperation of outer blade 1 and locating part 5, when the outer knife rest 2 is dismantled in the completion of shaving and outer blade 1 cleans, outer knife rest 2 of outer blade 1 can effectively protect interior blade 3, effectively prevent to cause the damage of outer blade 1 or the cutting edge of interior blade 3 to damage, guarantees the safety in utilization and the increase of service life of tool bit subassembly.

Example 2

As shown in fig. 6 to 8, the auxiliary positioning mechanism 6 comprises a positioning column 63, a positioning hole 64, a limiting hole 65 and a positioning rod 66, wherein the positioning column 63 is arranged on the inner surface of the end plate 21 at one end of two ends of the outer tool rest 2, and the positioning hole 64 is arranged in the end plate 21 at the other end of the outer tool rest 2; the limiting holes 65 are arranged on the end plates 21 coaxially arranged at the two ends of the inner tool rest 4; during assembly, the positioning column 63 on one end plate 21 of the outer cutter frame 2 is inserted into the limiting hole 65 on one end plate 21 of the inner cutter frame 4 to fix one end of the inner cutter frame 4 with the outer cutter frame 2, the other ends of the outer cutter frame 2 and the inner cutter frame 4 are inserted into the positioning hole 64 of the outer cutter frame 2 and the limiting hole 65 of the inner cutter frame 4 by using the positioning rod 66 to fix the other end of the inner cutter frame 4 with the outer cutter frame 2, so that the inner cutter frame 4 is completely fixed in the swinging space of the outer cutter frame 2, the highest point of the bending part of the inner cutter blade 3 mounted on the inner cutter frame 4 is positioned at a preset height in the outer cutter frame 2, then the outer cutter blade 1 is bent and fixed with the bending part of the inner cutter blade 3 as a reference, the outer cutter frame 2 and the two side walls of the outer cutter frame 2 are combined into a whole, and at this time, the positioning rod 66 is extracted to drive the positioning column 63 to separate from the limiting hole 65, so that the inner cutter frame 4 can keep the outer surface of the inner cutter blade 3 and the inner cutter blade 1 under the support of the floating mechanism 7. In the shaving process, the floating mechanism 7 not only can ensure the fitting degree of the inner blade 3 and the outer blade 1 to improve the shaving performance and the shaving benefit, but also can avoid phenomena such as hair pulling and hair tearing, and the use comfort of the shaver is improved. And when the outer blade 1 bears great skin extrusion, can shrink downwards and drive the internal knife rest 4 and the internal blade 3 to displace downwards and provide certain buffer space for the deformation of outer blade 1 to prevent that outer blade 1 from being broken and damaging the cutting edge of internal blade 3 by internal blade 3 after being pressed, improve the safety in utilization of outer blade 1 and internal blade 3. Secondly, restrict interior knife rest 4 and interior blade 3 in outer knife rest 2 as an organic whole through the cooperation of outer blade 1 and locating part 5, when the outer knife rest 2 is dismantled in the completion of shaving and outer blade 1 cleans, outer blade 1 and outer knife rest 2 can effectively protect interior blade 3, effectively prevent to cause the damage of outer blade 1 or the cutting edge of interior blade 3 to damage, guarantee the safety in utilization and the increase of service life of tool bit subassembly.

Example 3

As shown in fig. 9-12, the auxiliary positioning mechanism 6 includes a limiting plate 67, a limiting rod 68 and a tension spring 69, the limiting rod 68 is provided with two spaced parts and passes through the limiting plate 67 respectively to enable two ends of the limiting rod to be placed outside the limiting plate 67, a second clamping hook 681 is arranged at the end part of the outer surface of the upper end of the two limiting rods 68, a spring seat 682 is arranged on the inner surface of the upper end, the two ends of the tension spring 69 are sleeved outside the spring seat 682 to enable the upper end of the limiting rod 68 to be opened, the second clamping hook 681 is clamped into a second slot 683 arranged on the inner cutter frame 4, the highest point of the bending part of the inner cutter 3 to be mounted on the inner cutter frame 4 is located at a preset height position in the outer cutter frame 2, the two ends of the outer cutter 1 are respectively connected and fixed with two side walls of the outer cutter frame 2, the bending radian of the inner cutter 3 is used as a reference to be bent and formed, after the outer cutter frame 2, the inner cutter 3 and the inner cutter frame 4 are combined into a whole, the outer cutter frame 2, the inner cutter 68 and the inner cutter frame 4 are driven to act on the lower end of the limiting rod 68 to overcome the elasticity of the tension spring 69, so that the second clamping hook 681 is separated from the second slot 683 and the second slot 683, and the highest point of the second slot 683 is removed, and the highest point of the bending point is always kept in contact with the outer cutter, and the outer cutter 1, and the outer cutter 4, and the inner cutter is always kept in contact with the inner cutter. When the tool is assembled, the limiting plate 67 is attached to the bottom plane of the outer tool rest 2, the limiting rod 68 at the upper end of the limiting plate 67 can pass through the swinging groove between the two limiting pieces 5 at the bottom of the outer tool rest 2 and is arranged in the swinging space of the outer tool rest 2, then the floating mechanism 7 and the inner tool rest 4 are arranged in the swinging space of the outer tool rest 2, the upper end of the limiting rod 68 is used for outwards expanding the two limiting rods 68 under the elastic force of the tension spring 69, the second clamping hooks 681 arranged on the outer side surface of the end of the limiting rod 68 are clamped into the second slotted holes 683 arranged in the reinforcing wall of the inner tool rest 4, the inner tool rest 4 is fixed in the swinging space of the outer tool rest 2 under the limitation of the limiting rod 68, meanwhile, the highest point of the bending part of the inner tool 3 arranged on the inner tool rest 4 is positioned at the preset height in the outer tool rest 2, then the outer tool rest 1 is arranged, the outer tool rest 1 is bent and formed by taking the bending part of the inner tool 3 as a benchmark, the outer tool rest 2, the inner tool rest 3, the inner tool rest 4 and the floating mechanism 7 are combined into a whole, the second clamping hooks 681 are clamped into the center, the second clamping hooks 681 are separated from the second clamping hooks 681 from the outer surface of the inner tool rest 4, and the outer tool rest 683 is always pressed out of the outer surface of the inner tool rest 2, and the outer tool rest 1 is kept in contact with the outer tool rest, and the outer tool rest is always pressed against the surface is pressed against the outer tool rest, and the tool rest is kept in the tool is in the tool, and after the tool is pressed. In the shaving process, the floating mechanism 7 not only can ensure the fitting degree of the inner blade 3 and the outer blade 1 to improve the shaving performance and the shaving benefit, but also can avoid phenomena such as hair pulling and hair tearing, and the use comfort of the shaver is improved. And when the outer blade 1 bears larger skin extrusion force, the inner knife rest 4 and the inner blade 3 can be driven to downwards displace by downwards shrinking to provide a certain buffer space for the deformation of the outer blade 1, so that the outer blade 1 is prevented from being broken by the inner blade 3 and damaging the cutting edge of the inner blade 3 after being pressed, and the use safety of the outer blade 1 and the inner blade 3 is improved. Secondly, restrict interior knife rest 4 and interior blade 3 in outer knife rest 2 as an organic whole through the cooperation of outer blade 1 and locating part 5, when the outer knife rest 2 is dismantled in the completion of shaving and outer blade 1 cleans, outer blade 1 and outer knife rest 2 can effectively protect interior blade 3, effectively prevent to cause the damage of outer blade 1 or the cutting edge of interior blade 3 to damage, guarantee the safety in utilization and the increase of service life of tool bit subassembly.

Under the general concept of combining the outer cutter holder 2, the outer cutter blade 1, the inner cutter holder 4 and the inner cutter blade 3 into a whole, the limiting piece 5 and the outer cutter holder 2 can be optionally integrally injection molded or detachably connected with the outer cutter holder 2 into a whole. The two modes have advantages and disadvantages, the limiting piece 5 and the outer cutter rest 2 are produced by an integral injection molding process, and the production benefit of the outer cutter rest 2 is relatively high, but the method is only applicable to the outer cutter rest 2 made of plastic materials. If the outer tool rest 2 is made of metal, the detachable limiting piece 5 is more suitable, and although the limiting piece 5 and the outer tool rest 2 can be connected into a whole through a welding process, the production and processing cost can be relatively increased, so that the mode of the limiting piece 5 which is specifically adopted to be connected with the outer tool rest 2 into a whole can be determined according to the requirement of a user, and the embodiment is not limited further.

In order to improve the production benefit of the outer cutter rest 2, the limiting piece 5 is provided with two limiting pieces 51 which are symmetrically arranged at the bottom of the swinging space of the outer cutter rest 2 and are integrally injection molded with the outer cutter rest 2, the limiting pieces comprise limiting pieces 51, each limiting piece 51 is respectively arranged at the bottom of the swinging space of the outer cutter rest 2, a swinging interval is formed between the two limiting pieces 51, and the limiting pieces are respectively connected and fixed with the inner surfaces of two side walls of the outer cutter rest 2 and the inner surface of the end plate 21 at the corresponding end. The two limiting blocks 51 are arranged at intervals, and in use and installation, a driving shaft of the driving mechanism can be arranged in a swinging interval between the two limiting blocks 51, is connected with the inner knife rest 4 in a linkage way, and drives the inner knife rest 4 and the inner knife blade 3 to swing back and forth in a swinging space. In order to ensure the connection strength between the limiting block 51 and the outer tool rest 2, in actual production, limiting pieces 52 are respectively arranged in three directions of the limiting block 51, and each limiting piece 52 is integrally formed with the inner surfaces of the two side walls of the outer tool rest 2 and the inner surface of the end plate 21 at the corresponding end. Of course, in view of the purpose to be achieved, the limiting pieces 52 are provided on opposite sides of the limiting piece 51 to achieve connection and fixation of the limiting piece 51 and the outer holder 2, but the limiting pieces 52 are provided in three directions, respectively, so that the connection strength is higher, and therefore, the embodiment of the present embodiment is a preferred embodiment. In the actual production process, the first hook 61 of the auxiliary positioning mechanism 6 in embodiment 1 and the limiting piece 52 of the end plates 21 at the two ends of the outer cutter frame 2 are connected with the limiting piece 51 to be integrally injection molded, and after the outer cutter 1 is installed, the outer cutter is sheared by a tool such as scissors.

In order to prevent the outer blade 1 from being stressed too much and the inner blade 3 from being broken or damaged by the inner blade 3 during shaving, the floating mechanism 7 is a jacking spring, the limiting block 51 of the limiting piece 5 and the inner blade rest 4 are respectively provided with a spring column 41, and two ends of the jacking spring are respectively sleeved outside the spring column 41 so that the inner blade rest 4 drives the outer surface of the inner blade 3 to keep fit with the inner surface of the outer blade 1 under the elastic action of the jacking spring. In order to realize the floating function of the inner blade 3 and the inner blade holder 4, a top pressure spring, such as a metal spring sheet, may be omitted, but the spring is a standard component, so that the cost is relatively low, and therefore, the implementation of the embodiment is a preferred implementation.

On the basis of the integrated reciprocating cutter head assembly, the assembling process for improving the laminating degree of the inner cutter blade 3 and the outer cutter blade 1 and guaranteeing the curvature consistency of the bending part of the outer cutter blade 1 and the bending part of the inner cutter blade 3 is further provided, and comprises the following steps:

s1: according to the technical requirements, the outer blade 1, the outer blade rest 2, the inner blade 3, the inner blade rest, the floating mechanism 7 and the auxiliary positioning mechanism 6 are manufactured by different materials, sizes and processes, and as the existing outer blade 1, the outer blade rest 2, the inner blade 3, the inner blade rest 4 and the floating mechanism 7 are mature process components of the existing shaver, the process difference between the step and the existing shaver is that the auxiliary positioning mechanism 6 is added so as to facilitate the subsequent assembly of the inner blade rest 4 and the outer blade 1;

s2: connecting the inner blade 3 with the inner blade holder 4 to form an inner blade 3 part; the inner blade 3 used in the existing shaver is basically made of metal material, so that the inner blade is required to be clamped and fixed with the two side walls of the inner cutter rest 4 after being molded by adopting a bending process. However, some inner blades 3 of the shaver are made of ceramic materials, and if the inner blades 3 are made of ceramic materials, the inner blades 3 are integrally formed without bending;

s3: placing the inner blade 3 part into the outer blade holder 2, installing a floating mechanism 7 between the inner blade holder 4 and a limiting piece 5 in the outer blade holder 2, fixing the inner blade 3 part into the outer blade holder 2 through an auxiliary positioning mechanism 6, enabling the highest point of the bending part of the inner blade 3 to be positioned at a preset height in the outer blade holder 2, and fixing the inner blade holder into the outer blade holder 2 through the auxiliary positioning mechanism 6, so that the bending part of the inner blade 3 installed on the inner blade holder 4 can form a bending forming reference when the outer blade 1 is assembled;

s4: one side of the outer blade 1 is fixedly connected with the corresponding side wall of the outer blade holder 2, the other side of the outer blade 1 is bent towards the other side of the outer blade holder 2 by taking the bending radian of the inner blade 3 as a reference, and is fixedly connected with the corresponding side of the outer blade holder 2, the outer blade 1, the outer blade holder 2, the inner blade 3, the inner blade holder 4 and the floating mechanism 7 are combined into a whole, and the auxiliary positioning mechanism 6 is removed (the removal of the auxiliary positioning mechanism 6 is shown in the three embodiments and is not repeated). The connection and fixation means that a plurality of riveting columns 22 are arranged on the two side walls of the outer cutter rest 2, riveting holes are arranged at corresponding positions of the two ends of the outer cutter blade 1, and the two ends of the outer cutter blade 1 are riveted and fixed with the two side walls of the outer cutter rest 2 through a hot riveting process. The bending of the outer blade 1 uses the bending part of the inner blade 3 as a reference, when the outer blade is bent and molded, the consistency of the bending part of the outer blade 1 and the bending part of the inner blade 3 can be effectively ensured, and the outer surface of the inner blade 3 can be always attached to the inner surface of the outer blade 1 under the support of the floating mechanism 7, so that phenomena of napping, hair pulling and the like between the inner blade 3 and the outer blade 1 can be effectively prevented in the shaving process, and the use comfort of the shaver is improved.

The assembly process of the assembly process is different from that of the traditional cutter head assembly in that the auxiliary positioning mechanism 6 is utilized to fix the inner cutter frame 4 in the outer cutter frame 2, the bending part of the inner cutter blade 3 forms the benchmark of the bending forming of the outer cutter blade 1, and the bending part of the inner cutter blade 3 is utilized to bend the outer cutter blade 1 to form shaping and restraining, so that the bending degree of the outer cutter blade 1 is ensured to be consistent with the bending degree of the inner cutter blade 3, the phenomena of hair pulling and hair pulling caused by inconsistent bending degrees caused by the fact that the outer cutter blade 1 and the inner cutter blade 3 of the traditional shaver are separated to be bent are solved, and the shaving performance of the use comfort of the shaver is improved.

The above embodiments should not be construed as limiting the utility model, but any modifications based on the spirit of the utility model should be within the scope of the utility model.

Claims (7)

1. The integrated reciprocating cutter head assembly comprises an outer cutter blade, an outer cutter frame, an inner cutter blade and an inner cutter frame, wherein the middle of the inner cutter blade is bent to form a bending part, two ends of the bending part are respectively connected with two side walls of the inner cutter frame, and the inner cutter frame can horizontally reciprocate and swing in the outer cutter frame; a floating mechanism and a removable auxiliary positioning mechanism are arranged between the limiting piece and the inner tool rest, and the auxiliary positioning mechanism is used for fixing the inner tool rest in the outer tool rest so that the highest point of the bending part of the inner blade arranged on the inner tool rest is positioned at a preset height in the outer tool rest; the two ends of the outer blade are respectively connected and fixed with the two side walls of the outer blade holder, the middle of the outer blade holder takes the bending radian of the inner blade as a reference to form a bending part, the outer blade holder, the inner blade and the inner blade holder are combined into a whole, then the auxiliary positioning mechanism is removed, and the inner blade holder always keeps the outer surface of the bending part of the inner blade attached to the inner surface of the bending part of the outer blade under the support of the floating mechanism.

2. The integrated reciprocating cutter head assembly of claim 1, wherein the auxiliary positioning mechanism comprises a first clamping hook fixedly connected with the limiting piece and a first clamping groove arranged on the inner side wall of the two end plates of the inner cutter frame, when the floating mechanism supports the inner cutter frame, the first clamping hook is clamped into the first clamping groove, the highest bending point of the inner cutter blade arranged on the inner cutter frame is positioned at a preset height in the outer cutter frame, two ends of the outer cutter blade are fixedly connected with the two side walls of the outer cutter frame, the middle of the outer cutter blade is bent and molded by taking the bending radian of the inner cutter blade as a reference, and after the outer cutter blade, the outer cutter frame, the inner cutter blade and the inner cutter frame are combined into a whole, the first clamping hook is removed, so that the inner cutter frame is supported by the floating mechanism to drive the bending part of the inner cutter blade to keep fit with the bending part of the outer cutter blade all the time.

3. The integrated reciprocating cutter head assembly of claim 1, wherein the auxiliary positioning mechanism comprises a positioning column, a positioning hole, a limiting hole and a positioning rod, wherein the positioning column is arranged on the inner surface of the end plate at one end of the two ends of the outer cutter frame, and the positioning hole is arranged in the end plate at the other end of the outer cutter frame; the limiting holes are arranged on two end plates coaxially arranged at two ends of the inner tool rest; the locating post inserts in one of them spacing hole of interior knife rest, the locating lever inserts in another spacing hole and the locating hole makes the highest point of the interior blade bending portion of installing on interior knife rest be in the predetermined high department of outer knife rest, outer blade both ends are connected fixedly with outer knife rest both sides wall respectively and the centre uses the crooked radian of interior blade to be the benchmark bending molding, behind with outer blade, outer knife rest, interior blade and interior knife rest combination as an organic whole, remove the locating lever and break away from locating post and spacing hole mutually, make interior knife rest keep laminating with the bending portion internal surface of outer blade all the time under floating mechanism's support.

4. The integrated reciprocating cutter head assembly as claimed in claim 1, wherein the auxiliary positioning mechanism comprises a limiting plate, a limiting rod and a tension spring, the limiting rod is provided with two limiting plates which are arranged at intervals and respectively penetrate through the limiting plate to enable two ends of the limiting rod to be arranged outside the limiting plate, a second clamping hook is arranged at the end part of the outer surface of the upper end of the limiting rod, a spring seat is arranged on the inner surface of the upper end, the two ends of the tension spring are sleeved outside the spring seat to enable the upper end of the limiting rod to be propped open, the second clamping hook is clamped into a second slotted hole arranged on the inner cutter frame, the highest point of a bending part of an inner cutter blade arranged on the inner cutter frame is positioned at a preset height in the outer cutter frame, the two ends of the outer cutter blade are respectively connected and fixed with two side walls of the outer cutter frame, the inner cutter blade and the bending radian of the inner cutter blade is taken as a reference for bending forming, after the outer cutter blade, the outer cutter frame, the inner cutter blade and the inner cutter frame are combined into a whole, the second slotted hole is removed from the second clamping hook and the second slotted hole by overcoming the elasticity of the tension spring at the upper end of the limiting rod, and the inner cutter frame is driven to always keep the outer surface of the inner cutter blade to be attached to the inner surface of the outer cutter blade under the support of the floating mechanism.

5. The integrated reciprocating knife head assembly of claim 1, wherein the stop member is integrally injection molded with the outer knife rest or is removably coupled to the outer knife rest.

6. The integrated reciprocating cutter head assembly of claim 1, wherein the limiting piece is provided with two limiting blocks symmetrically arranged at the bottom of the swinging space of the outer cutter frame and integrally injection-molded with the outer cutter frame, the limiting blocks comprise limiting blocks, each limiting block is respectively arranged at the bottom of the swinging space of the outer cutter frame, a swinging interval is formed between the two limiting blocks, and the limiting blocks are respectively connected and fixed with the inner surfaces of two side walls of the outer cutter frame and the inner surfaces of end plates at the corresponding ends through limiting pieces.

7. The integrated reciprocating cutter head assembly according to any one of claims 1 to 6, wherein the floating mechanism is a pressing spring, spring columns are respectively arranged in the limiting block of the limiting piece and the inner cutter frame, and two ends of the pressing spring are respectively sleeved outside the spring columns so that the inner cutter frame can drive the outer surface of the inner cutter blade to keep fit with the inner surface of the outer cutter blade under the elastic action of the pressing spring.