Integrated tool bit assembly with guide rail and trimming tool

Abstract

The integrated tool bit assembly with the guide rail and the trimming tool are characterized in that a static knife is in a sheet shape, a supporting piece with the width smaller than that of the static knife is fixedly arranged on the bottom end face of the static knife, and the two ends of the supporting piece cannot rotate and are detachably inserted into a static knife holder so that the static knife and the static knife holder can 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 device has the beneficial effects that the static cutter is arranged to be in a sheet shape, the supporting piece with the width smaller than that of the static cutter is additionally arranged on the bottom end face of the static cutter, the supporting piece can be wrapped with the movable cutter when the movable cutter is installed, point contact or line contact is formed between the movable cutter and the side wall of the supporting piece, and a guiding effect is formed on reciprocating swing of the movable cutter; 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 present invention relates to a hair trimming device, and more particularly to an integrated cutter head assembly and a trimming tool formed with a guide rail, which are mainly applied to the fields of personal care tools such as razors and hair clippers. Background Art

[0002] Traditional cutter head assemblies mainly include a stationary cutter and a moving cutter. The upper end surface of the moving cutter and the bottom end surface of the stationary cutter are always kept in contact under the action of an elastic member, and reciprocally swing along the bottom end surface of the stationary cutter under the drive of a driving member, thereby realizing the trimming of hair.

[0003] To improve the mounting firmness of the stationary cutter, most of the existing stationary cutters have a plane in contact with the skin and side surfaces on both sides of the plane. During the production and assembly process, the two side surfaces of the stationary cutter are used to connect and fix with the two side walls of the stationary cutter seat, so that the stationary cutter and the stationary cutter seat form an integral body. With this structure, although the mounting firmness of the stationary cutter can be ensured, there are also certain defects. For example, the two side surfaces of the stationary cutter can only be used to fix the stationary cutter and cannot perform other functions.

[0004] Since the moving cutter is always kept in contact with the stationary cutter by the elastic force of the spring, it cannot play a guiding role in the direction of the spring elastic force for the moving cutter, resulting in the phenomenon that both ends of the moving cutter twist during the reciprocating swing, and a relatively horizontal linear motion cannot be achieved; secondly, the two side surfaces of the existing stationary cutter cannot limit the swing amplitude of the moving cutter either. If the swing amplitude is too large, the moving cutter will hit the stationary cutter seat, which not only increases the working noise of the cutter head assembly, but also affects the hair trimming performance of the cutter head assembly or even damages the cutter head assembly. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides an integrated cutter head assembly and a trimming tool formed with a guide rail. The cutter head assembly can not only ensure the mounting firmness of the stationary cutter, but also realize the guiding and swing amplitude limiting functions, avoid twisting during the reciprocating swing and affecting the hair trimming performance, and can also realize the maximum limit of the swing amplitude of the moving cutter, improving the use safety of the cutter head assembly.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is an integrated cutter head assembly formed with a guide rail, including a stationary cutter mounted on a stationary cutter seat and a moving cutter mounted on a moving cutter seat. The moving cutter contacts and cooperates with the stationary cutter under the action of an external force to cut hair; the stationary cutter is in a sheet shape, and a support member with a width smaller than the width of the stationary cutter is fixedly provided on its bottom end surface, and both ends of the support member are non-rotatably and detachably inserted into the stationary cutter seat to connect the stationary cutter and the stationary cutter seat into one body; at least one side wall of the moving cutter forms a point contact or a line contact with the side wall of the support member, so that the support member forms a guiding limit on the swinging direction of the moving cutter; and a limiting mechanism for limiting the swing amplitude of the moving cutter and / or the moving cutter seat is further provided in the support member.

[0007] Preferably, when viewed in the direction of the orthographic projection of either end of the support member, the support member is in the shape of a hollow frame, and the moving blade is in the shape of an inverted "ji" character, and its two side walls respectively form point contact and / or line contact with the two side walls of the support member.

[0008] Preferably, a notch is provided at the bottom of the support member, the bottom of the moving blade is placed in the notch, and the length of the notch is greater than or equal to the maximum distance of the reciprocating swing of the moving blade along the stationary blade, and the notch constitutes a limiting mechanism.

[0009] Preferably, the outer surface of the stationary blade seat is inclined with respect to the horizontal extension line of the highest point of its surface, and its inclination angle S is less than 15°, and the outer surface of the support member is inclined and has the same inclination angle as the outer surface of the stationary blade seat, so that the outer surface of the stationary blade installed on the support member and the outer surface of the stationary blade seat are on the same horizontal plane with the same inclination angle.

[0010] Preferably, sinking grooves that are sunken along the outer surface and protrude from the bottom end surface are respectively provided at both side edges of the outer surface of the stationary blade, and there are intervals between the edge parts and both ends of the sinking grooves and the edge and both ends of the stationary blade respectively, and a plurality of stationary blade teeth are arranged at intervals in the sinking grooves so that the upper end surfaces of the ends of the stationary blade teeth form protrusions; a grinding groove is provided on the bottom end surface of the stationary blade, and the bottom end surface of the sinking groove is ground flat by the grinding groove so that the bottom end surface of the sinking groove and the bottom end surface of the stationary blade are on the same plane, and the thickness T1 of each stationary blade tooth is less than the thickness T2 of the stationary blade.

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

[0012] Preferably, the edge distance T4 between the two ends of the sinking groove and the two ends of the stationary blade is less than 3 mm to 10 mm.

[0013] Preferably, the stationary blade seat includes a left base and a right base, and square holes are respectively provided in the opposite inner side walls at the upper ends of the left base and the right base, and both ends of the support member are respectively inserted into the square holes non-rotatably and detachably, so that the stationary blade is connected to the left base and the right base, and connecting pieces are respectively provided on both sides of the left base and the right base, so that the left base and the right base are connected as a whole.

[0014] Preferably, extension blocks are provided at the lower ends of the left base and the right base and are arranged oppositely, spring columns are respectively provided on the extension blocks, one end of an elastic member is sleeved on the spring column, and the other end abuts against the bottom of the moving blade seat so that the moving blade and the stationary blade are always kept in contact; the distance T5 between the two extension blocks is less than the width T6 of the moving blade seat, so that the moving blade and the moving blade seat can swing reciprocally, but are axially limited and form an integral body that can be installed or disassembled synchronously with the stationary blade and the stationary blade seat.

[0015] A pruning tool includes the above-mentioned integrated tool head assembly formed with a guide rail.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The stationary blade is designed as a sheet, and a support member with a width smaller than that of the stationary blade is added to the bottom end surface of the stationary blade. During production and assembly, the two non-rotatable and detachable ends of the support member can be inserted into the stationary blade seat, so that the stationary blade and the stationary blade seat are connected as a whole, thereby ensuring the firmness of the installation of the stationary blade and the stationary blade seat and the convenience of disassembly and assembly.

[0018] 2. The width of the support member is set to be smaller than the width of the stationary blade. When the moving blade is kept in contact with the end surface of the stationary blade under the action of an external force, at least one side wall of the moving blade can also form a point contact or a line contact with the side wall of the support member, and the support member is used to guide the reciprocating swing of the moving blade, so as to prevent the two ends of the moving blade from twisting longitudinally when the moving blade reciprocates horizontally (i.e., in the horizontal direction) along the stationary blade, thereby affecting the hair trimming performance of the moving blade.

[0019] 3. A limiting mechanism is added to the support member. When the moving blade and the moving blade seat reciprocate along the stationary blade driven by the driving mechanism, the limiting mechanism can play a limiting role on the moving blade and / or the moving blade seat, effectively preventing the moving blade and / or the moving blade seat from swinging excessively and hitting the stationary blade seat, reducing the working noise of the cutter head assembly and preventing it from hitting the stationary blade seat, and ensuring the firmness of the installation of the stationary blade. Description of the Drawings

[0020] Figure 1 Stereoscopic structure diagram of the integrated cutter head assembly with a guide rail formed in the embodiment of the present invention

[0021] Figure 2 Cross-sectional view of the integrated cutter head assembly with a guide rail formed in the embodiment of the present invention in the horizontal direction

[0022] Figure 3 For Figure 2 Cross-sectional view at A-A in

[0023] Figure 4 For Figure 2 Cross-sectional view at B-B in

[0024] Figure 5 Assembly structure diagram of the stationary blade and the support member in the embodiment of the present invention

[0025] Figure 6 Main view stereoscopic structure diagram of the support member in the embodiment of the present invention

[0026] Figure 7 Bottom view stereoscopic structure diagram of the support member in the embodiment of the present invention

[0027] Figure 8 Stereoscopic structure diagram of the moving blade in the embodiment of the present invention

[0028] Figure 9Stereoscopic structure diagram of the stationary blade in the embodiment of the present invention

[0029] Figure 10 Front view plan view of the stationary blade in the embodiment of the present invention

[0030] Figure 11 is Figure 10 Cross-sectional structure diagram at C-C in Specific implementation manner

[0031] The following combines the attached Figures 1 to 11 to further illustrate the implementation manner of the present invention:

[0032] The present invention is an integrated cutter head assembly formed with a guide rail, including a stationary blade (2) installed on a stationary blade seat (1), and a moving blade (4) installed on a moving blade seat (3). The moving blade (4) contacts the stationary blade (2) under the action of an external force and cooperates with each other to cut hair under the drive of a drive mechanism (not shown in the figure). To solve the technical problems that only two side surfaces of the existing stationary blade (2) can be used to fix the stationary blade (2) and do not have the functions of guiding and limiting, the stationary blade (2) is in a sheet shape, and a support member (5) with a width smaller than the width of the stationary blade (2) is fixedly arranged at its bottom end surface, and both ends of the support member (5) are non-rotatable and detachably inserted into the stationary blade seat (1) to connect the stationary blade (2) and the stationary blade seat (1) into one body. By setting the stationary blade (2) in a sheet shape and adding a support member (5) with a width smaller than that of the stationary blade (2) at the bottom end surface of the stationary blade (2), during production and assembly, the support member (5) can be non-rotatably and detachably inserted into the stationary blade seat (1) at both ends, so that the stationary blade (2) and the stationary blade seat (1) are connected into one body, thereby ensuring the installation firmness and disassembly convenience of the stationary blade (2) and the stationary blade seat (1).

[0033] Since the width of the support member (5) is smaller than the width of the stationary blade (2), when the moving blade (4) is kept in contact with the end surface of the stationary blade (2) under the action of an external force, at least one side wall of the moving blade (4) can also form a point contact or a line contact with the side wall of the support member (5), and the support member (5) is used to guide the reciprocating swing of the moving blade (4), so as to prevent the two ends of the moving blade (4) from longitudinally twisting when the moving blade (4) reciprocates horizontally (i.e., in the horizontal direction) along the stationary blade (2), which affects the hair trimming performance of the moving blade (4).

[0034] In actual production and assembly, a bump or rib (41) can be provided on one of the two side walls of the moving blade (4) to form a point contact or line contact with the support member (5). Alternatively, bumps or ribs (41) can be provided on both side walls of the moving blade (4) simultaneously to form a point contact or line contact with the support member (5). However, when a bump or rib (41) is provided only on one side wall of the moving blade (4), the guiding and limiting effect is relatively poor, and it is impossible to avoid the longitudinal torsion of both ends of the moving blade (4) during its reciprocating swing. Therefore, bumps or ribs (41) are provided on both side walls of the moving blade (4) to form a point contact or line contact with the two side walls of the support member (5). In this way, the support member (5) can not only guide and direct the moving blade (4), but also effectively prevent the longitudinal torsion of both ends of the moving blade (4) during its reciprocating swing under the restriction of the two side walls of the support member (5), improving the running stability and hair trimming performance of the moving blade (4). Adopting a point contact or line contact between the moving blade (4) and the support member (5) can reduce the contact area between the moving blade (4) and the support member (5). When the moving blade (4) reciprocates along the stationary blade (2) driven by the driving mechanism, the frictional resistance between the moving blade (4) and the support member (5) can be significantly reduced, effectively reducing the surface temperature rise of the stationary blade (2) or the moving blade (4) caused by the frictional resistance, and improving the use comfort of the cutter head assembly.

[0035] Although the two side walls of the support member (5) can guide and limit the moving blade (4), they cannot limit the maximum stroke of the reciprocating swing of the moving blade (4). When the reciprocating swing distance of the moving blade (4) is too large, the two ends of the moving blade (4) will hit the stationary blade seat (1), resulting in an increase in working noise or affecting the connection firmness of the stationary blade (2). Therefore, a limiting mechanism for restricting the swing amplitude (i.e., the swing range) of the moving blade (4) and / or the moving blade seat (3) is also provided on the support member (5). By adding a limiting mechanism on the support member (5), when the moving blade (4) and the moving blade seat (3) reciprocate along the stationary blade (2) driven by the driving mechanism, the limiting mechanism can limit the moving blade (4) and / or the moving blade seat (3), effectively preventing the moving blade (4) and / or the moving blade seat (3) from over-swinging and hitting the stationary blade seat (1), reducing the working noise of the cutter head assembly and preventing the impact on the stationary blade seat (1), and ensuring the installation firmness of the stationary blade (2).

[0036] Since the moving blade (4) is fixed on the moving blade seat (3), and the moving blade seat (3) is linked to the driving mechanism, in actual assembly, the support member (5) can be used to individually limit the maximum reciprocating swing amplitude of the moving blade (4), or limit the maximum reciprocating swing amplitude of the moving blade seat (3), or simultaneously limit the maximum reciprocating swing amplitudes of both the moving blade (4) and the moving blade seat (3). This can avoid the moving blade (4) from swinging too large and hitting the stationary blade seat (1). In specific implementation, whether the moving blade (4) or the moving blade seat (3) is limited by the support member (5), as long as the horizontal limit of the maximum reciprocating swing distance of the moving blade (4) along the stationary blade (2) can be achieved, this embodiment does not make further limitations.

[0037] During the hair trimming process, the moving blade (4) reciprocates along the stationary blade (2) under the guiding and limiting action of the support member (5) to cut the hair. During the reciprocating swing, the moving blade (4) and the support member (5) continuously perform reciprocating motion and friction. Although the contact between the moving blade (4) and the support member (5) is point contact or line contact, the high-frequency reciprocating swing will also cause the surface temperatures of the support member (5) and the moving blade (4) to rise, and then the heat will also be conducted to the surface of the stationary blade (2). The excessively high surface temperature will cause a burning sensation on the user's skin during use, reducing the user's comfort. In this regard, when viewed from the orthographic projection direction of either end of the support member (5), the support member (5) is in a hollow frame shape. Using a hollow frame shape can not only increase the heat-receiving surface area of the support member (5) and reduce the surface temperature, but also allow air to flow through the hollow frame-shaped support member (5), accelerating the dissipation of the heat generated by friction, reducing the surface temperature rise of the support member (5), the moving blade (4), and even the stationary blade (2), and improving the comfort of using the cutter head assembly.

[0038] Since the support member (5) is in a hollow frame structure, and the two side walls of the moving blade (4) respectively form point contact or line contact with the side walls of the support member (5), the moving blade (4) is relatively in an inverted "Ji" shape, having a bottom plate (42) and side plates (43) connected to both sides of the bottom plate (42). At the ends of the two side plates (43), a plurality of moving blade teeth (44) in a relatively perpendicular shape are provided. Among them, at least one bump or rib (41) is provided at both ends of the two side plates (43). When the moving blade (4) covers the outside of the support member (5), the bumps or ribs (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) reciprocates along the stationary blade (2).

[0039] To facilitate the support member (5) in restricting the maximum swing amplitude of the reciprocating swing of the moving cutter (4) and prevent the swing amplitude from being too large and hitting the stationary cutter seat (1), a notch (51) is provided at the bottom of the support member (5). The bottom of the moving cutter (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 cutter (4) along the stationary cutter (2). The notch (51) constitutes a limiting mechanism. By providing the notch (51) at the bottom of the support member (5), the length of the notch (51) is preferably slightly greater than the maximum swing amplitude distance of the reciprocating swing of the moving cutter (4). In this way, during assembly, the bottom of the moving cutter (4) is placed in the notch (51), and both sides of the notch (51) can limit the two ends of the bottom of the moving cutter (4), preventing excessive swing when the moving cutter (4) reciprocates, avoiding the moving cutter (4) hitting the stationary cutter seat (1) and affecting the installation firmness of the stationary cutter (2), reducing the working noise, and improving the working stability of the cutter head assembly.

[0040] In order to improve the trimming efficiency of beards and other hairs, some existing trimming tools mostly use multiple cutter head assemblies. To make each cutter head assembly adapt to the contour of the human skin and maximize the contact of each cutter head assembly with the skin, the outer surface of the stationary cutter seat (1) is inclined with respect to the horizontal extension line of its surface highest point, 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 cutter seat (1), so that the outer surface of the stationary cutter (2) installed on the outer surface of the support member (5) is on the same inclined plane as the outer surface of the stationary cutter seat (1). By setting the surface of the stationary cutter seat (1) to be inclined, its inclination angle S is preferably 7° - 12°. In this way, the multiple cutter head assemblies can be arranged at an inclined angle. During 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] To prevent the stationary cutter teeth (22) from stabbing the skin when the stationary cutter (2) contacts the skin or slides along the skin, sunken grooves (21) that are recessed along the outer surface and protrude from the bottom end surface are respectively provided at both edge portions of the outer surface of the stationary cutter (2). The edge portion and both end portions of the sunken groove (21) are respectively spaced from the edge and both ends of the stationary cutter (2). Then, the sunken groove (21) area is cut, so that several spaced stationary cutter teeth (22) are formed on the edge of the stationary cutter (2) blade. And, convex blocks (23) are respectively formed on the upper end surface of the end portion of each stationary cutter tooth (22) to blunt the end portion of each stationary cutter tooth (22). In this way, when the stationary cutter (2) contacts the skin or slides along the skin, the convex blocks (23) can play a protective role, avoiding the skin from being stabbed by the stationary cutter (2) and improving the use safety of the cutter head assembly.

[0042] When a sinking groove (21) is formed on the outer surface of the stationary cutter (2), the bottom end surface of the sinking groove (21) will correspondingly protrude from the bottom end surface of the stationary cutter (2). To improve the hair trimming effect, the bottom of the sinking groove (21) protruding from the bottom end surface of the stationary cutter (2) can be ground flat to form a grinding groove (24). In this way, the thickness of each stationary cutter tooth (22) can be reduced to the greatest extent and kept on the same plane as the cutting surface. Moreover, the thickness T1 of each stationary cutter tooth is made smaller than the thickness T2 of the stationary cutter. When in use, the thinner stationary cutter teeth (22) can control the length of the remaining stubble (or called hair roots) on the skin surface to the shortest, thus improving the hair trimming effect. Secondly, since both ends of the sinking groove (21) in the stationary cutter (2) do not protrude from the bottom end surface of the stationary cutter (2), when the thickness of the stationary cutter teeth (22) is reduced by the grinding groove (24), both ends of the stationary cutter (2) can maintain sufficient working strength, preventing the stationary cutter (2) from being distorted and deformed when trimming hair, improving the working stability of the stationary cutter (2), and ensuring the hair trimming performance of the stationary cutter (2).

[0043] To reduce the thickness of the stationary cutter teeth (22) to the greatest extent and ensure the working stability of the stationary cutter teeth (2) at the same time, the depression depth T3 of the sinking groove (21) is smaller than the thickness T2 of the stationary cutter, and the thickness T1 of each stationary cutter tooth formed in the sinking groove (21) is greater than 0.08 mm but smaller than the thickness T2 of the stationary cutter. By controlling the depression depth T3 of the sinking groove (21) to be smaller than the thickness T2 of the stationary cutter, when the bottom end surface of the sinking groove (21) is ground, the thickness of each stationary cutter tooth (22) can be minimized to 0.08 mm. This can not only improve the hair trimming effect of each stationary cutter tooth (22), but also improve the working stability of each stationary cutter tooth (22) when cooperating with the high-frequency reciprocating swing of the moving cutter (4). In actual production, the depression depth T3 of the sinking groove (21) must not be greater than the thickness T2 of the stationary cutter. If it is greater than the thickness T2 of the stationary cutter, it means that the height difference between the outer surface of the stationary cutter tooth (22) and the outer surface of the stationary cutter (2) relatively increases. When the bottom end surface of the sinking groove (21) is ground by the grinding groove (24) to reduce the thickness of the stationary cutter teeth (22), the working strength of each stationary cutter tooth (22) cannot be guaranteed, affecting the hair trimming performance of the stationary cutter (2). If the depression depth T3 of the sinking groove (21) is relatively shallow, the height of the bottom end surface of the sinking groove (21) protruding from the bottom end surface of the stationary cutter (2) is correspondingly small. When the bottom end surface of the sinking groove (21) is ground by the grinding groove (24), the grinding thickness also decreases synchronously, resulting in a corresponding increase in the thickness of the stationary cutter teeth (22), and the length of the stubble (i.e., hair roots) on the skin surface cannot be effectively shortened, and the hair trimming effect is relatively poor. Therefore, in actual production, the depression depth T3 of the sinking groove (21) is generally required to be greater than two-thirds of the thickness T2 of the stationary cutter.

[0044] Since the thickness of each stationary cutter tooth (22) is relatively thin, with a minimum controllable thickness of 0.08 mm, to prevent the two sides of the stationary cutter (2) from being distorted during use, the edge distance T4 between the two ends of the sinking groove (21) and the two ends of the stationary cutter (2) is less than 3 mm to 10 mm, preferably 5 mm. During use, the edge distance T4 can effectively support and strengthen the stationary cutter (2), preventing the distortion of each stationary cutter tooth (22) in the stationary cutter (2) during use, and ensuring the overall working strength and working stability of the stationary cutter (2). If there is no 3 mm to 10 mm edge distance T4 reserved at both ends of the stationary cutter (2), each stationary cutter tooth (22) can only be connected to the stationary cutter (2) body by the tooth root, and each stationary cutter tooth (22) is extremely likely to be distorted during use, seriously affecting the use performance and working stability of the stationary cutter (2). Of course, the edge distance T4 at both ends of the stationary cutter (2) can also be set larger, such as reserving 15 mm, 20 mm or more. However, increasing the edge distance T4 will correspondingly reduce the number of stationary cutter teeth (22) and reduce the shaving efficiency. Therefore, the optimal implementation method is that the edge distance T4 at both ends of the stationary cutter (2) is 3 mm to 10 mm. While ensuring the working strength of the stationary cutter teeth (22) in the stationary cutter (2), it is not necessary to increase the thickness T2 of the stationary cutter to ensure the working strength of the stationary cutter (2), reducing the material cost of the stationary cutter (2).

[0045] To facilitate the production of the stationary cutter base (1) and the assembly of the stationary cutter (2), the stationary cutter base (1) includes a left base (11) and a right base (12), and square holes (13) are respectively provided in the opposite inner sidewalls at the upper ends of the left base (11) and the right base (12). Both ends of the support member (5) are respectively inserted into the square holes (13) in a non-rotatable and detachable manner, connecting the stationary cutter (2) to the left base (11) and the right base (12). Connecting 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 as a whole. By setting the stationary cutter base (1) as a split left base (11) and right base (12), and respectively providing square holes (13) on the left base (11) and the right base (12), it is convenient for both ends of the support member (5) to be detachably inserted into the left base (11) and the right base (12), and the stationary cutter (2) is fixed to the support member (5) by welding or bonding, so that the stationary cutter (2) can be connected to the stationary cutter base (1). To ensure the connection firmness of the left base (11) and the right base (12), connecting pieces (14) are respectively added on both sides of the left base (11) and the right base (12), thus ensuring that the left base (11), the right base (12), the support member (5) and the stationary cutter (2) form a whole.

[0046] Since the movable knife (4) is mounted on the movable knife seat (3), and the movable knife (4) is always kept in contact with the stationary knife (2) under the action of external force, in order to facilitate the disassembly and assembly of the stationary knife (2), the stationary knife seat (1), and the movable knife (4) and the movable knife seat (3) as a whole, relatively arranged extension blocks (15) are provided at the lower ends of the left base (11) and the right base (12), and spring columns (16) are provided on each extension block (15). One end of the elastic member (17) is sleeved on the spring column (16), and the other end is supported on the bottom of the movable knife seat (3) so that the movable knife (4) and the stationary knife (2) are always kept in contact; the distance T5 between the two extension blocks (15) is smaller than the width T6 of the movable knife seat, so that the movable knife (4) and the movable knife seat (3) can swing back and forth, but the axial limit forms a whole that can be synchronously installed or disassembled with the stationary knife (2) and the stationary knife seat (1). The spring column (16) is arranged on the extension, which not only facilitates the assembly of the elastic member (17) and ensures the working stability of the elastic member (17), but also controls the distance between the extension blocks (15) to be smaller than the width of the moving knife seat (3). In this way, when the support member (5) is inserted into the left base (11) and the right base (12), the moving knife (4) and the moving knife seat (3) located below the stationary knife (2) cannot be separated from the stationary knife seat (1), but can only swing back and forth along the stationary knife (2) under the drive mechanism, so that the stationary knife seat (1) and the stationary knife (2) are axially limited to the moving knife (4) and the moving knife seat (3). In this way, the stationary knife (2), the stationary knife seat (1), the support member (5), the moving knife (4), the moving knife seat (3) and the elastic member (17) form a whole that can be disassembled and assembled as a whole, thereby improving the disassembly and assembly efficiency of the cutter head assembly. In the actual production process, the elastic member (17) is a spring. Of course, a metal spring sheet can also be selected. However, since the spring is a standard part that is easy to obtain and has a low cost, the elastic member (17) is preferably a spring.

[0047] A pruning tool comprises the above-mentioned integrated cutter head assembly formed with a guide rail.

[0048] The above embodiments should not be regarded as limiting the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. Form an integrated cutter head assembly with guide rails, including a stationary cutter (2) mounted on a stationary cutter seat (1) and a moving cutter (4) mounted on a moving cutter seat (3). The moving cutter (4) contacts and cooperates with the stationary cutter (2) under the action of an external force 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-rotatably and detachably inserted into the stationary knife seat (1) so that the stationary knife (2) and the stationary knife seat (1) are connected as a whole. 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 also provided in the support member (5).

2. The one-piece cutter head assembly formed with a guide rail according to claim 1, wherein 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 "Ji" shape, and its two side walls respectively form a point contact and / or a line contact with the two side walls of the support member (5).

3. The one-piece cutter head assembly formed with a guide rail according to claim 1, characterized in that A notch (51) is provided at the bottom of the support member (5), and 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). The notch (51) constitutes a limiting mechanism.

4. The one-piece cutter head assembly formed with a guide rail according to claim 1, wherein The outer surface of the stationary knife seat (1) is inclined with respect 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 one-piece cutter head assembly formed with a guide rail according to claim 1, wherein On both sides of the outer surface of the stationary knife (2), sinking grooves (21) that are sunken along the outer surface and protrude from the bottom end surface are respectively provided. There are intervals between the edge and the two ends of the sinking groove (21) and the edge and the two ends of the stationary knife (2). A plurality of stationary knife teeth (22) are arranged at intervals in the sinking groove (21) so that the upper end surfaces of the ends of the stationary knife teeth (22) form protrusions (23). A grinding groove (24) is provided on the bottom end surface of the stationary knife (2). The grinding groove (24) grinds the bottom end surface of the sinking groove (21) to make the bottom end surface of the sinking groove (21) and the bottom end surface of the stationary knife (2) in the same plane, and makes the thickness T1 of each stationary knife tooth less than the thickness T2 of the stationary knife.

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

7. The one-piece cutter head assembly formed with a guide rail according to claim 5, characterized in that The edge distance T4 between the two ends of the sinking 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 formed with a guide rail according to claim 1, wherein 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-rotatably and detachably inserted into the square holes (13) so that the stationary knife (2) is connected to the left base (11) and the right base (12). Connecting 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 as a whole.

9. The one-piece cutter head assembly formed with a guide rail according to claim 8, wherein At the lower ends of the left base (11) and the right base (12), there are oppositely arranged extension blocks (15). Spring columns (16) are respectively provided on each extension block (15). One end of an elastic member (17) is sleeved on the spring column (16), and the other end abuts against the bottom of the moving tool holder (3) so that the moving tool (4) and the stationary tool (2) are always kept in contact. The distance T5 between the two extension blocks (15) is less than the width T6 of the moving tool holder (3), so that the moving tool (4) and the moving tool holder (3) can swing reciprocally, but are axially limited to form an integral body that can be installed or disassembled synchronously with the stationary tool (2) and the stationary tool holder (1).

10. A pruning tool, characterized in that Comprising the one-piece tool head assembly formed with a guide rail according to any one of claims 1 to 9.

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