Integrated tool bit assembly with guide rail and trimming tool

Abstract

The utility model relates to an integrated cutter head assembly with a guide rail and a trimming tool, which are characterized in that a static cutter is in a sheet shape, a supporting piece with the width smaller than that of the static cutter is fixedly arranged on the bottom end face of the static cutter, and the two ends of the supporting piece cannot rotate and are detachably inserted into a static cutter holder to enable the static cutter and the static cutter holder to be connected into a whole; the movable cutter and the side wall of the supporting piece form point contact or line contact, so that the supporting piece forms guide limiting on the swinging direction of the movable cutter; in addition, a limiting mechanism for limiting the swing amplitude of the movable cutter and / or the movable cutter holder is further arranged in the supporting piece. The utility model has the beneficial effects that the static knife is arranged to be sheet-shaped, the support piece with the width smaller than that of the static knife is additionally arranged on the bottom end surface of the static knife, the support piece is coated outside the movable knife when the movable knife is mounted, so that the movable knife and the side wall of the support piece form point contact or line contact, a guide effect is formed on the reciprocating swing of the movable knife, and the limiting mechanism is additionally arranged on the support piece; therefore, the moving knife and / or the moving knife holder can be limited, and the moving knife and / or the moving knife holder can be effectively prevented from excessively swinging to collide with the static knife holder.

Description

TECHNICAL FIELD

[0001] The utility model relates to a hair trimming device, more particularly to an integrated cutter head assembly with guide rails and a trimming tool, mainly applied to the field of personal care tools such as shavers and epilators. BACKGROUND

[0002] The conventional cutter head assembly mainly comprises a static cutter and a dynamic cutter, the upper end surface of the dynamic cutter is always kept in close contact with the bottom end surface of the static cutter under the action of an elastic member, and the dynamic cutter reciprocates along the bottom end surface of the static cutter under the driving of a driving component, thereby realizing the trimming of hair.

[0003] To improve the installation firmness of the static cutter, the existing static cutter mostly has a plane in contact with the skin and side surfaces placed on both sides of the plane, in the production and assembly process, the two side surfaces of the static cutter are connected and fixed with the two side walls of the static cutter seat, thereby forming an integral whole of the static cutter and the static cutter seat. Although this structure can ensure the installation firmness of the static cutter, it also has certain defects, for example, the two side surfaces of the static cutter can only be used to fix the static cutter and cannot play other roles.

[0004] Since the dynamic cutter is always kept in close contact with the static cutter by the elastic force of the spring, the dynamic cutter cannot be guided in the direction of the spring elastic force, resulting in the torsion of the two ends of the dynamic cutter when reciprocating, and the horizontal straight motion in the relative sense cannot be realized; secondly, the two side surfaces of the existing static cutter cannot limit the swing amplitude of the dynamic cutter, for example, if the swing amplitude is too large, the dynamic cutter will hit the static cutter, not only increasing the working noise of the cutter head assembly, but also affecting the hair trimming performance of the cutter head assembly and even damaging the cutter head assembly. SUMMARY

[0005] To solve the above technical problems, the utility model provides an integrated cutter head assembly with guide rails and a trimming tool, which can not only ensure the installation firmness of the static cutter, but also realize the guiding and swing limiting functions, avoid the torsion when reciprocating and affect the hair trimming performance, and also realize the maximum limitation of the swing amplitude of the dynamic cutter, thereby improving the use safety of the cutter head assembly.

[0006] To solve the above technical problems, the utility model adopts the technical scheme of forming the integral cutter head assembly with guide rails, comprising the static cutter installed on the static cutter seat and the dynamic cutter installed on the dynamic cutter seat, the dynamic cutter is in contact with the static cutter under the action of external force and cooperates to cut the hair; the static cutter is in sheet shape, a support with a width smaller than that of the static cutter is fixedly arranged on the bottom end surface of the static cutter, and the support is non-rotatably and detachably inserted into the static cutter seat to connect the static cutter and the static cutter seat into an integral whole; at least one side wall of the dynamic cutter forms point contact or line contact with the side wall of the support, so that the support forms guiding and limiting to the swing direction of the dynamic cutter; and the support is further provided with a limiting mechanism for limiting the swing range of the dynamic cutter and / or the dynamic cutter seat.

[0007] Preferably, the support is in hollow frame shape in the direction of the orthographic projection of any end of the support, and the dynamic cutter is in inverted ''j'' shape, and the two side walls thereof form point contact and / or line contact with the two side walls of the support.

[0008] Preferably, a slot is arranged on the bottom of the support, the bottom of the dynamic cutter is arranged in the slot, and the length of the slot is greater than or equal to the maximum distance of the dynamic cutter along the reciprocating swing of the static cutter, and the slot constitutes the limiting mechanism.

[0009] Preferably, the outer surface of the static cutter seat is inclined relative to the horizontal extension line of the highest point of the surface thereof, the inclination angle S is less than 15°, the outer surface of the support is inclined and has the same inclination angle as that of the outer surface of the static cutter seat, so that the outer surface of the static cutter installed on the support is on the same horizontal plane as the outer surface of the static cutter seat.

[0010] Preferably, the outer surface of the static cutter is provided with a sunken groove at each side edge thereof, the sunken groove is recessed along the outer surface and protrudes from the bottom end surface, the edge portion and the end portion of the sunken groove are respectively arranged at intervals from the edge and the end portion of the static cutter, a plurality of static cutter teeth are arranged at intervals in the sunken groove to form a protrusion on the upper end surface of the end portion of each static cutter tooth; a grinding groove is arranged on the bottom end surface of the static cutter, the grinding groove grinds the bottom end surface of the sunken groove to make the bottom end surface of the sunken groove and the bottom end surface of the static cutter on the same plane, and the thickness T1 of each static cutter tooth is less than the thickness T2 of the static cutter.

[0011] Preferably, the recessed depth T3 of the sunken groove is less than the thickness T2 of the static cutter, and the thickness T1 of each static cutter tooth formed in the sunken groove is greater than 0.08 mm but less than the thickness T2 of the static cutter.

[0012] Preferably, the edge distance T4 between the end portion of the sunken groove and the end portion of the static cutter is less than 3 mm to 10 mm.

[0013] Preferably, the static cutter seat comprises a left base and a right base, and a square hole is arranged in the opposite inner side wall of the upper end of the left base and the right base, respectively, and the two ends of the support are non-rotatably and detachably inserted into the square holes, respectively, so that the static cutter is connected with the left base and the right base, and a connecting piece is arranged on the two sides of the left base and the right base, respectively, so that the left base and the right base are connected into an integral whole.

[0014] Preferably, extension blocks are arranged opposite at lower ends of the left base and the right base, spring posts are arranged on the extension blocks respectively, one end of the elastic member is sleeved on the spring post, and the other end is supported on the bottom of the moving cutter holder so that the moving cutter and the static cutter are always kept in close contact; the distance T5 between the two extension blocks is less than the width T6 of the moving cutter holder, so that the moving cutter and the moving cutter holder can swing back and forth, but are axially limited to form a whole which can be synchronously mounted or dismounted with the static cutter and the static cutter holder.

[0015] The trimming tool comprises the above-mentioned integrated cutter head assembly formed with the guide rail.

[0016] The utility model has the advantages of:

[0017] 1. The static cutter is provided in a sheet shape, and a support member with a width smaller than that of the static cutter is arranged at the bottom end face of the static cutter, so that when the static cutter is assembled, the two ends of the support member are inserted into the static cutter holder in a non-rotatable and detachable manner, the static cutter and the static cutter holder are connected as a whole, and the mounting firmness and the dismounting convenience of the static cutter and the static cutter holder are ensured.

[0018] 2. The width of the support member is set to be smaller than the width of the static cutter, so that when the moving cutter is kept in close contact with the end face of the static cutter under the action of external force, at least one side wall of the moving cutter is kept in point contact or line contact with the side wall of the support member, the reciprocating swing of the moving cutter is guided by the support member, and the longitudinal torsion of the two ends of the moving cutter when the moving cutter swings back and forth along the static cutter in the horizontal direction is avoided, so that the hair trimming performance of the moving cutter is not affected.

[0019] 3. A limiting mechanism is arranged on the support member, so that when the moving cutter and the moving cutter holder are driven by the driving mechanism to swing back and forth along the static cutter, the limiting mechanism can limit the moving cutter and / or the moving cutter holder, the excessive swing of the moving cutter and / or the moving cutter holder is effectively prevented, the static cutter holder is prevented from being hit by the moving cutter and / or the moving cutter holder, the working noise of the cutter head assembly is reduced, the static cutter is prevented from being hit by the moving cutter and / or the moving cutter holder, and the mounting firmness of the static cutter is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A perspective view of the integrated cutter head assembly formed with the guide rail according to an embodiment of the utility model

[0021] Figure 2 A transverse sectional view of the integrated cutter head assembly formed with the guide rail according to an embodiment of the utility model

[0022] Figure 3 A Figure 2 A sectional view at A-A

[0023] Figure 4 A Figure 2 A sectional view at B-B

[0024] Figure 5Assemble structure diagram of static cutter and supporting piece in the embodiment of the utility model

[0025] Figure 6 Main view solid structure diagram of supporting piece in the embodiment of the utility model

[0026] Figure 7 Bottom view solid structure diagram of supporting piece in the embodiment of the utility model

[0027] Figure 8 Solid structure diagram of dynamic cutter in the embodiment of the utility model

[0028] Figure 9 Solid structure diagram of static cutter in the embodiment of the utility model

[0029] Figure 10 Main view plan of static cutter in the embodiment of the utility model

[0030] Figure 11 Figure 10 Sectional view structure diagram at C-C Specific implementation

[0031] The following will be combined with the drawings Figures 1-11 The embodiment of the utility model is further explained:

[0032] The utility model discloses a integral cutter head assembly formed with guide rail, including static cutter (2) installed on static cutter seat (1), and dynamic cutter (4) installed on dynamic cutter seat (3), dynamic cutter (4) is contacted with static cutter (2) under the action of external force and is cooperated with each other under the driving of driving mechanism (not shown in the drawing) and cuts hair. To solve the technical problem that the two side surfaces of the prior static cutter (2) can only be used for fixing static cutter (2) and do not have guiding and limiting functions, static cutter (2) is in sheet shape, and the supporting piece (5) with the width less than the width of static cutter (2) is fixed to the bottom end face of static cutter (2), and the both ends of supporting piece (5) are not rotatable and detachably inserted into static cutter seat (1) to connect static cutter (2) and static cutter seat (1) as a whole. By setting static cutter (2) as sheet shape and adding supporting piece (5) with the width less than static cutter (2) to the bottom end face of static cutter (2), when producing and assembling, the both ends of supporting piece (5) are not rotatable and detachably inserted into static cutter seat (1), so that static cutter (2) and static cutter seat (1) are connected as a whole, thereby guaranteeing the installation firmness and dismounting convenience of static cutter (2) and static cutter seat (1).

[0033] ​When the moving blade (4) is kept in contact with the end surface of the static blade (2) under the action of external force, at least one side wall of the moving blade (4) can also form point contact or line contact with the side wall of the support (5), the reciprocating swing of the moving blade (4) is guided by the support (5), and the longitudinal torsion of the two ends of the moving blade (4) is avoided when the moving blade (4) swings along the transverse direction (i.e. horizontal direction) of the static blade (2), so that the hair trimming performance of the moving blade (4) is affected.

[0034] In actual production and assembly, one of the two side walls of the moving blade (4) can be provided with a convex point or convex strip (41) to form point contact or line contact with the support (5). The two side walls of the moving blade (4) can also be provided with convex points or convex strips (41) to form point contact or line contact with the support (5). However, the guiding and limiting effect is relatively poor when only one of the two side walls of the moving blade (4) is provided with a convex point or convex strip (41), and the longitudinal torsion of the two ends of the moving blade (4) cannot be avoided when the moving blade (4) swings. Therefore, the two side walls of the moving blade (4) are provided with convex points or convex strips (41) to form point contact or line contact with the two side walls of the support (5), so that the support (5) not only guides the moving blade (4), but also effectively avoids the longitudinal torsion of the two ends of the moving blade (4) when the moving blade (4) swings, and improves the running stability and hair trimming performance of the moving blade (4). Point contact or line contact is adopted between the moving blade (4) and the support (5), which can reduce the contact area between the moving blade (4) and the support (5), significantly reduce the friction resistance between the moving blade (4) and the support (5) when the moving blade (4) swings along the static blade (2) under the driving of the driving mechanism, effectively reduce the surface temperature rise of the static blade (2) or the moving blade (4) caused by the friction resistance, and improve the use comfort of the cutter head assembly.

[0035] Although the two side walls of the support (5) can guide and limit the moving blade (4), the maximum swing distance of the moving blade (4) cannot be limited. When the swing distance of the moving blade (4) is too large, the two ends of the moving blade (4) will hit the static blade seat (1), which will increase the working noise or affect the connection firmness of the static blade (2). Therefore, a limiting mechanism is arranged on the support (5) to limit the swing amplitude (i.e. swing range) of the moving blade (4) and / or the moving blade seat (3). When the moving blade (4) and the moving blade seat (3) swing along the static blade (2) under the driving of the driving mechanism, the limiting mechanism can limit the moving blade (4) and / or the moving blade seat (3), effectively prevent the moving blade (4) and / or the moving blade seat (3) from swinging too much to hit the static blade seat (1), reduce the working noise of the cutter head assembly, prevent the moving blade (4) and / or the moving blade seat (3) from hitting the static blade seat (1), and ensure the installation firmness of the static blade (2).

[0036] Since the moving blade (4) is fixed on the moving blade holder (3), and the moving blade holder (3) is linked to the drive mechanism, in actual assembly, the maximum reciprocating swing amplitude of the moving blade (4) can be limited separately by the support member (5), or the maximum reciprocating swing amplitude of the moving blade holder (3) can be limited, or the maximum reciprocating swing amplitude of both the moving blade (4) and the moving blade holder (3) can be limited simultaneously. This can prevent the moving blade (4) from swinging too much and hitting the stationary blade holder (1). In specific implementation, whether the moving blade (4) or the moving blade holder (3) is limited by the support member (5), as long as the maximum reciprocating swing distance of the moving blade (4) along the stationary blade (2) can be horizontally limited, this embodiment does not make further limitations.

[0037] During the hair trimming process, the moving blade (4) swings back and forth along the stationary blade (2) under the guidance and limiting action of the support (5) to cut the hair. During the back and forth swinging, the moving blade (4) and the support (5) continuously perform back and forth motion friction. Although there is point contact or line contact between the moving blade (4) and the support (5), the high-frequency back and forth swinging will also cause the surface temperature of the support (5) and the moving blade (4) to rise, and the heat will also be conducted to the surface of the stationary blade (2). The excessively high surface temperature will cause the user's skin to feel burning when using it, reducing the user's comfort. In this regard, from the orthographic projection direction of either end of the support (5), the support (5) is a hollow frame. The hollow frame shape can not only increase the heat-receiving surface area of ​​the support (5) and reduce the surface temperature, but also allow air to flow, accelerate the dissipation of heat generated by friction, reduce the surface temperature rise of the support (5), the moving blade (4) and even the stationary blade (2), and improve the comfort of using the blade assembly.

[0038] Since the support member (5) has a hollow frame structure, and the two side walls of the moving blade (4) form point contact or line contact with the side walls of the support member (5), the moving blade (4) is inverted "U" shape, with a base plate (42) and side plates (43) connected to the two sides of the base plate (42). At the ends of the two side plates (43), there are several moving blade teeth (44) in a relatively vertical shape. At least one protrusion or ridge (41) is provided at each end of the two side plates (43). When the moving blade (4) covers the support member (5), the protrusion or ridge (41) on the two side plates (43) can reduce the contact area between the side plates (43) of the moving blade (4) and the side walls of the support member (5), and reduce the frictional resistance when the moving blade (4) swings back and forth along the stationary blade (2).

[0039] In order to limit the maximum swing of the reciprocating swing of the support piece (5) to the moving knife (4), prevent the swing from being too large to hit the static knife seat (1), a notch (51) is arranged at the bottom of the support piece (5), the bottom of the moving knife (4) is arranged in the notch (51), and the length of the notch (51) is greater than or equal to the maximum distance of the reciprocating swing of the moving knife (4) along the static knife (2), and the notch (51) constitutes a limiting mechanism. By arranging the notch (51) at the bottom of the support piece (5), the length of the notch (51) is preferably slightly larger than the maximum swing distance of the reciprocating swing of the moving knife (4), so that when assembling, the bottom of the moving knife (4) is arranged in the notch (51), and the two sides of the notch (51) can limit the two ends of the bottom of the moving knife (4), prevent the moving knife (4) from swinging too much when reciprocating, avoid the moving knife (4) from hitting the static knife seat (1) to affect the installation firmness of the static knife (2), and reduce the working noise, improve the working stability of the cutter head assembly.

[0040] In order to improve the trimming efficiency of hair such as beard, some existing trimming tools mostly use multiple cutter head assemblies. In order to adapt to the skin contour of the human body and maximize the contact of each cutter head assembly with the skin, the outer surface of the static knife seat (1) is inclined relative to the horizontal extension line of the highest point of the surface, and the inclination angle S is less than 15°. The outer surface of the support piece (5) is inclined and has the same inclination angle as the outer surface of the static knife seat (1), so that the outer surface of the static knife (2) installed on the outer surface of the support piece (5) is on the same inclined plane as the outer surface of the static knife seat (1). By arranging the surface of the static knife seat (1) to be inclined, the inclination angle S is preferably 7°-12°, so that the multiple cutter head assemblies can be arranged at an inclination angle. When in use, the inclined multiple cutter head assemblies can respectively fit the skin contour, thereby improving the hair trimming efficiency of the cutter head assembly.

[0041] In order to prevent the static knife teeth (22) from scratching the skin when the static knife (2) contacts the skin or slides along the skin, a sink (21) is arranged at the edge of the outer surface of the static knife (2) and protrudes from the bottom surface. The edge and the two ends of the sink (21) are respectively arranged at intervals between the edge and the two ends of the static knife (2), and then the sink (21) area is cut, so that the edge of the static knife (2) forms a plurality of static knife teeth (22) arranged at intervals, and a protrusion (23) is formed on the end surface of each static knife tooth (22) to blunt the end of each static knife tooth (22). When the static knife (2) contacts the skin or slides along the skin, the protrusion (23) can play a protective role to avoid the skin being scratched by the static knife (2), thereby improving the use safety of the cutter head assembly.

[0042] When the sink groove (21) is formed on the outer surface of the static knife (2), the bottom end surface of the sink groove (21) will protrude from the bottom end surface of the static knife (2). In order to improve the hair trimming effect, the protruding sink groove (21) bottom can be ground to form a grinding groove (24). In this way, the thickness of each static knife tooth (22) can be reduced to the greatest extent and kept in the same plane with the cutting surface. Moreover, the thickness T1 of each static knife tooth is less than the thickness T2 of the static knife. During use, the thinner static knife tooth (22) can control the length of the residual stubble (or hair root) on the skin surface to the shortest, thereby improving the hair trimming effect. Secondly, since the two ends of the sink groove (21) in the static knife (2) do not protrude from the bottom end surface of the static knife (2), when the grinding groove (24) reduces the thickness of the static knife tooth (22), the two ends of the static knife (2) can maintain sufficient working strength to prevent the static knife (2) from twisting and deforming during hair trimming, thereby improving the working stability of the static knife (2) and ensuring the hair trimming performance of the static knife (2).

[0043] In order to reduce the thickness of the static knife tooth (22) to the greatest extent and ensure the working stability of the static knife tooth (22), the recess depth T3 of the sink groove (21) is less than the thickness T2 of the static knife, and the thickness T1 of each static knife tooth formed in the sink groove (21) is greater than 0.08mm but less than the thickness T2 of the static knife. By controlling the recess depth T3 of the sink groove (21) to be less than the thickness T2 of the static knife, the thickness of each static knife tooth (22) can be minimized to 0.08mm when the bottom end surface of the sink groove (21) is ground. This not only improves the hair trimming effect of each static knife tooth (22), but also improves the working stability of each static knife tooth (22) when it cooperates with the high-frequency reciprocating swing of the moving knife (4). In actual production, the recess depth T3 of the sink groove (21) should not be greater than the thickness T2 of the static knife. If it is greater than the thickness T2 of the static knife, it means that the height difference between the outer surface of the static knife tooth (22) and the outer surface of the static knife (2) increases. When the grinding groove (24) is used to grind the bottom end surface of the sink groove (21) to reduce the thickness of the static knife tooth (22), the working strength of each static knife tooth (22) cannot be guaranteed, which affects the hair trimming performance of the static knife (2). If the recess depth T3 of the sink groove (21) is shallow, the height of the bottom end surface of the sink groove (21) protruding from the bottom end surface of the static knife (2) is small. When the grinding groove (24) is used to grind the bottom end surface of the sink groove (21), the grinding thickness also decreases, which increases the thickness of the static knife tooth (22) and cannot effectively shorten the length of the stubble (i.e. hair root) on the skin surface, resulting in a relatively poor hair trimming effect. Therefore, in actual production, the recess depth T3 of the sink groove (21) is generally required to be greater than two-thirds of the thickness T2 of the static knife.

[0044] In order to prevent the static cutter (2) from being twisted and deformed on both sides during use, the edge distance T4 between the two ends of the static cutter (2) and the two ends of the sink (21) is less than 3mm-10mm, preferably 5mm. During use, the edge distance T4 can effectively support and strengthen the static cutter (2) to prevent the static cutter teeth (22) from being twisted and deformed during use, ensuring the overall working strength and stability of the static cutter (2). If the edge distance T4 of 3mm-10mm is not reserved at both ends of the static cutter (2), the static cutter teeth (22) can only be connected to the static cutter (2) body by the tooth root, and the static cutter teeth (22) are prone to be twisted and deformed during use, which seriously affects the use performance and working stability of the static cutter (2). Of course, the edge distance T4 of the edge of the static cutter (2) can also be set larger, such as 15mm, 20mm or more, but the increase of the edge distance T4 will correspondingly reduce the number of static cutter teeth (22) and reduce the shaving efficiency. Therefore, the edge distance T4 of the edge of the static cutter (2) is 3mm-10mm, which is the optimal implementation mode. It ensures the working strength of the static cutter teeth (22) in the static cutter (2) without increasing the thickness T2 of the static cutter (2) to ensure the working strength of the static cutter (2), thereby reducing the material cost of the static cutter (2).

[0045] In order to facilitate the production of the static cutter seat (1) and the assembly of the static cutter (2), the static cutter seat (1) comprises a left base (11) and a right base (12), and a square hole (13) is arranged in the opposite inner side wall of the upper end of the left base (11) and the right base (12). The two ends of the support (5) are inserted into the square hole (13) without rotation and can be detached, so that the static cutter (2) is connected with the left base (11) and the right base (12). A connecting piece (14) is arranged on both sides of the left base (11) and the right base (12) to connect the left base (11) and the right base (12) into a whole. By arranging the static cutter seat (1) as a split left base (11) and a right base (12), and arranging the square hole (13) on the left base (11) and the right base (12), the two ends of the support (5) can be detachably inserted into the left base (11) and the right base (12), and the static cutter (2) is welded or bonded with the support (5). Thus, the static cutter (2) can be connected with the static cutter seat (1). In order to ensure the connection firmness of the left base (11) and the right base (12), a connecting piece (14) is arranged on both sides of the left base (11) and the right base (12), so as to form a whole with the left base (11), the right base (12), the support (5) and the static cutter (2).

[0046] Since the moving blade (4) is installed on the moving blade seat (3), and the moving blade (4) is always kept in contact with the static blade (2) under the action of external force, in order to facilitate the static blade (2), the static blade seat (1), and the moving blade (4) and the moving blade seat (3) to form an integral whole for disassembly and assembly, opposite extension blocks (15) are arranged at the lower ends of the left base (11) and the right base (12), spring columns (16) are respectively arranged on the extension blocks (15), the elastic members (17) are sleeved on one ends of the spring columns (16), and the other ends of the elastic members (17) are supported on the bottom of the moving blade seat (3) to always keep the moving blade (4) in contact with the static blade (2); the distance T5 between the two extension blocks (15) is less than the width T6 of the moving blade seat, so that the moving blade (4) and the moving blade seat (3) can reciprocatingly swing, but are axially limited to form a synchronous installation or disassembly whole with the static blade (2) and the static blade seat (1). The spring columns (16) are arranged on the extension blocks (15), which not only facilitates the assembly of the elastic members (17) and ensures the working stability of the elastic members (17), but also controls the distance between the extension blocks (15) to be less than the width of the moving blade seat (3), so that when the supporting member (5) is inserted into the left base (11) and the right base (12), the moving blade (4) and the moving blade seat (3) located below the static blade (2) cannot be separated from the static blade seat (1), but can only reciprocatingly swing along the static blade (2) under the driving of the driving mechanism, so that the static blade seat (1) and the static blade (2) axially limit the moving blade (4) and the moving blade seat (3), so that the static blade (2), the static blade seat (1), the supporting member (5), the moving blade (4), the moving blade seat (3), and the elastic members (17) form an integral whole that can be integrally disassembled and assembled, thereby improving the disassembly and assembly efficiency of the tool bit assembly. In actual production, the elastic members (17) are springs, and of course, metal elastic sheets can also be selected, but since the springs are standard parts and are easy to obtain and have low cost, the elastic members (17) are preferably springs.

[0047] A trimming tool comprising the above-mentioned integrated tool bit assembly formed with guide rails.

[0048] The above embodiments should not be regarded as limiting the utility model, but any improvement based on the spirit of the utility model should be within the protection scope of the utility model.

Claims

1. An integral blade assembly with a guide rail, comprising a stationary blade (2) mounted on a stationary blade holder (1) and a movable blade (4) mounted on a movable blade holder (3), wherein the movable blade (4) contacts the stationary blade (2) under external force and cooperates to cut hair; characterized in that The stationary knife (2) is in a sheet shape, and a support member (5) with a width smaller than that of the stationary knife (2) is fixedly provided on its bottom end surface. Both ends of the support member (5) are non-rotatable and detachably inserted into the stationary knife seat (1) to connect the stationary knife (2) and the stationary knife seat (1) into one body; at least one side wall of the moving knife (4) forms a point contact or a line contact with the side wall of the support member (5), so that the support member (5) forms a guiding limit on the swinging direction of the moving knife (4); moreover, a limiting mechanism for restricting the swing amplitude of the moving knife (4) and / or the moving knife seat (3) is further provided in the support member (5).

2. The integrated cutter head assembly with a guide rail as described in claim 1, characterized in that... Viewed from the front projection direction of either end of the support member (5), the support member (5) is in a hollow frame shape, and the moving knife (4) is in an inverted "V" shape, and its two side walls respectively form point contacts and / or line contacts with the two side walls of the support member (5).

3. The integrated cutter head assembly with a guide rail as described in claim 1, characterized in that... A notch (51) is provided at the bottom of the support member (5), the bottom of the moving knife (4) is placed in the notch (51), and the length of the notch (51) is greater than or equal to the maximum distance of the reciprocating swing of the moving knife (4) along the stationary knife (2), and the notch (51) constitutes a limiting mechanism.

4. The integrated cutter head assembly with a guide rail as described in claim 1, characterized in that... The outer surface of the stationary knife seat (1) is inclined relative to the horizontal extension line of the highest point of its surface, and its inclination angle S is less than 15°. The outer surface of the support member (5) is inclined and has the same inclination angle as the outer surface of the stationary knife seat (1), so that the outer surface of the stationary knife (2) mounted on the support member (5) and the outer surface of the stationary knife seat (1) are on the same horizontal plane with the same inclination angle.

5. The integrated cutter head assembly with a guide rail as described in claim 1, characterized in that... On both sides of the outer surface of the stationary knife (2), sink grooves (21) that are recessed along the outer surface and protrude from the bottom end surface are respectively provided. The edge and both ends of the sink groove (21) are respectively arranged at intervals between the edge and both ends of the stationary knife (2). A plurality of stationary knife teeth (22) are arranged at intervals in the sink groove (21) so that the upper end surfaces of the ends of each stationary knife tooth (22) form protrusions (23); a grinding groove (24) is provided on the bottom end surface of the stationary knife (2), and the bottom end surface of the sink groove (21) is ground flat by the grinding groove (24) so that the bottom end surface of the sink groove (21) and the bottom end surface of the stationary knife (2) are on the same plane, and the thickness T1 of each stationary knife tooth is less than the thickness T2 of the stationary knife.

6. The integrated cutter head assembly with a guide rail as described in claim 5, characterized in that... The depression depth T3 of the sink groove (21) is less than the thickness T2 of the stationary knife, and the thickness T1 of each stationary knife tooth formed in the sink groove (21) is greater than 0.08 mm but less than the thickness T2 of the stationary knife.

7. The integrated cutter head assembly with a guide rail according to claim 5, characterized in that... The edge distance T4 between the two ends of the sink groove (21) and the two ends of the stationary knife (2) is less than 3 mm to 10 mm.

8. The integrated cutter head assembly with a guide rail according to claim 1, characterized in that... The stationary knife seat (1) includes a left base (11) and a right base (12), and square holes (13) are respectively provided in the opposite inner side walls at the upper ends of the left base (11) and the right base (12). Both ends of the support member (5) are non-rotatable and detachably inserted into the square holes (13) to connect the stationary knife (2) with the left base (11) and the right base (12). Connection pieces (14) are respectively provided on both sides of the left base (11) and the right base (12), so that the left base (11) and the right base (12) are connected into one body.

9. The integrated cutter head assembly with a guide rail as described in claim 8, characterized in that... The lower ends of the left base (11) and the right base (12) are provided with oppositely arranged extension blocks (15), and each extension block (15) is provided with a spring column (16). One end of the elastic element (17) is sleeved on the spring column (16), and the other end is supported on the bottom of the moving knife seat (3) so that the moving knife (4) and the stationary knife (2) always remain in contact. The distance T5 between the two extension blocks (15) is less than the width T6 of the moving knife seat (3), so that the moving knife (4) and the moving knife seat (3) can swing back and forth, but are axially limited to form a whole that can be installed or disassembled synchronously with the stationary knife (2) and the stationary knife seat (1).

10. A pruning tool, characterized in that... Includes the integral cutter head assembly with guide rails formed according to any one of claims 1 to 9.

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