Cutter

Abstract

A cutter (100, 200, 300), comprising a housing (110, 210, 310), a blade holder (120, 220, 320) and a blade (130, 230, 330). The blade is mounted on the blade holder; the blade holder is mounted in the housing; a blade outlet (114, 214, 314) is formed in the housing; and the blade is configured to extend out of the housing from the blade outlet. The blade holder is configured to slide in the length direction of the housing. The blade has a first state and a second state; in the first state, the cutting edge (131, 231, 331) of the blade is consistent with the length direction of the housing; and in the second state, an included angle is formed between the cutting edge of the blade and the length direction of the housing. The blade holder is configured such that when the blade holder moves to an orientation switching position, at least part of the blade holder rotates relative to the housing, so that the blade is switched between the first state and the second state.

Description

A knife TECHNICAL FIELD

[0001] The present application relates to the field of hand tools, in particular to a knife. BACKGROUND

[0002] A common utility knife generally only has the function of cutting objects. During use, if it is necessary to scrape off paint, glue or other sundries attached to a surface (such as a ceramic tile surface, a glass surface or a wooden mold surface), it is difficult to maintain a good posture using the utility knife, which can cause the tip of the blade to pierce the surface, resulting in damage to the surface and making it difficult to completely remove the sundries, failing to achieve the use effect of a scraper and being inconvenient to use. At this time, in order to achieve a good effect of removing sundries, two knives need to be prepared, one utility knife and one scraper.

[0003] Therefore, the skilled in the art is committed to developing a knife that can expand the use function of the utility knife, can be used as a utility knife and a scraper, has a simple structure, is convenient to use and has a long service life. SUMMARY

[0004] In view of the above defects of the prior art, the technical problem to be solved by the present application is to overcome the problem of single function of the existing utility knife, in particular the defect that the surface is scratched and inconvenient to use when used to scrape off sundries attached to the surface.

[0005] To achieve the above-mentioned purpose, the present application provides a knife comprising a housing, a blade holder and a blade, wherein:

[0006] The blade is installed on the blade holder, the blade holder is installed in the housing, an outlet is provided on the housing, and the blade is configured to be able to extend out of the housing from the outlet;

[0007] The blade holder is configured to slide along the length direction of the housing;

[0008] The blade has a first state and a second state. In the first state, the cutting edge of the blade is consistent with the length direction of the housing. In the second state, the cutting edge of the blade forms an angle with the length direction of the housing;

[0009] The blade holder is configured such that when the blade holder moves to a posture switching position, at least part of the blade holder rotates relative to the housing, so that the blade switches between the first state and the second state.

[0010] Further, the housing comprises a first housing and a second housing arranged oppositely, and the blade holder is arranged between the first housing and the second housing.

[0011] Further, the first shell comprises a first slide channel extending along a length direction thereof, and the knife holder is configured to slide along the first slide channel.

[0012] Further, the knife further comprises a first push button connected to the knife holder, and the first push button is configured to drive the knife holder to slide when subjected to an external force.

[0013] Further, the shell comprises a slide groove extending along a length direction thereof, and one end of the first push button protrudes outside the shell through the slide groove, and the first push button is configured to slide along the slide groove.

[0014] Further, a plurality of gear slots are sequentially distributed along a length direction of the slide groove, and at least a part of the first push button can fall into the gear slots.

[0015] Further, the knife holder comprises a first holder body and a second holder body, the second holder body is rotatably connected to the first holder body, the first holder body is configured to slide along the first slide channel, and the blade is mounted to the second holder body.

[0016] Further, the second shell is provided with a posture switching member near an end of the knife outlet, the posture switching member is configured to rotate relative to the second shell and drive the second holder body to rotate relative to the first holder body, so as to switch the blade between the first state and the second state.

[0017] Further, the slide groove is located at a connection between the first shell and the second shell, the second shell comprises a second slide channel extending along a length direction thereof, and the second holder body is configured to slide along the second slide channel.

[0018] Further, the second slide channel comprises a first section and a second section, the first section is provided on the second shell, and the second section is provided on the posture switching member; when the posture switching member is in an initial position, the second section is in communication with the first section; and after the posture switching member is rotated, the second section is out of position with the first section.

[0019] Further, the knife is configured such that, after the posture switching member is in the initial position and the second holder body slides to the second section, the posture switching member is rotated to make the second section out of position with the first section, and the posture switching member drives the second holder body to rotate relative to the first holder body by limiting the second holder body through the second section.

[0020] Further, a second push button is connected to the posture switching piece, an arc-shaped sliding groove is arranged on the second shell, one end of the second push button is connected to the posture switching piece, the other end of the push button protrudes outside the second shell through the arc-shaped sliding groove, and the second push button is configured to be movable along the arc-shaped sliding groove and drive the posture switching piece to move.

[0021] Further, the tool is configured such that when the tool holder moves to the posture switching position under the drive of the first push button, the first push button rotates, thereby driving the tool holder to rotate, so that the blade is switched between the first state and the second state.

[0022] Further, the sliding groove is arranged on the second shell, the first push button includes a neck portion located in the sliding groove, the length of the neck portion is greater than the width of the neck portion, and the width of the neck portion matches the width of the sliding groove; a circular area is arranged on one end of the sliding groove close to the tool outlet, the diameter of the circular area is at least greater than the length of the neck portion, and the first push button is configured such that when the first push button moves to the circular area, the tool holder is located at the posture switching position, and the first push button can rotate in the circular area, so that the first push button drives the tool holder to rotate.

[0023] Further, a protruding portion is arranged on the side of the tool holder facing the first shell and can be located in the first sliding groove, a slope area is arranged on the bottom of the first sliding groove at a position corresponding to the circular area of the sliding groove, and when the protruding portion of the tool holder moves through the slope area, the tool holder is pushed to move towards the second shell.

[0024] Further, the first sliding groove includes a first part sliding groove extending in a straight line along the length direction of the shell and a second part sliding groove extending in an arc line, the second part sliding groove is communicated with the first part sliding groove, and the second part sliding groove is close to the tool outlet; wherein the tool holder is configured to rotate relative to the first push button when the tool holder slides along the second part sliding groove.

[0025] Further, the sliding groove is arranged on the second shell, the first push button includes a neck portion located in the sliding groove, and the width of the neck portion matches the width of the sliding groove; the first push button is configured to be slidable only along the length direction of the sliding groove, and when the tool holder slides along the second part sliding groove, the first push button rotates relative to the tool holder under the limitation of the sliding groove.

[0026] Further, the knife outlet comprises a first knife outlet at the end of the shell and a second knife outlet at the side of the shell adjacent to the first knife outlet, the second knife outlet is communicated with the first knife outlet, the first knife outlet is configured to extend the blade out of the shell in the first state, and the second knife outlet is configured to extend the blade out when the blade switches to the second state; the knife tool further comprises a supporting assembly arranged at the second knife outlet and configured to rotate relative to the shell to block or release the block of the second knife outlet, and support the blade holder when the blade is in the second state.

[0027] Further, the end of the shell opposite to the knife outlet is connected with a third shell, and the third shell is configured to store a spare blade.

[0028] Further, the second shell is provided with a blocking part to support the blade holder when the blade is in the second state.

[0029] The present application has the following beneficial technical effects:

[0030] 1. The knife tool can switch from a utility knife state to a scraper state, expanding the function of the utility knife. Users can conveniently scrape off the dirt attached to the surface without needing to carry an additional scraper.

[0031] 2. The present application rotates at least part of the blade holder to drive the blade to rotate, so that the blade can switch between the utility knife and the scraper, and the switching operation is simple, stable and reliable.

[0032] The concept, specific structure and technical effects of the present application will be further described below with reference to the accompanying drawings, so as to fully understand the purpose, features and effects of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0033] Fig. 1 is a schematic view of the structure of the knife tool of embodiment 1, and the blade extends out of the shell;

[0034] Fig. 2 is a schematic view of Fig. 1 from another perspective;

[0035] Fig. 3 is a schematic view of the shell structure in Fig. 1;

[0036] Fig. 4 is a schematic view of Fig. 3 from another perspective, showing the first knife outlet and the second knife outlet;

[0037] Fig. 5 is an exploded schematic view of Fig. 1, showing the structure inside the first shell;

[0038] Fig. 6 is a schematic view of Fig. 5 from another perspective, showing the structure inside the second shell;

[0039] Fig. 7 is an exploded view of Fig. 1;

[0040] Fig. 8 is a schematic view of Fig. 7 from another perspective;

[0041] Fig. 9 is an exploded schematic view of the first and second frames;

[0042] Fig. 10 is a schematic view of Fig. 9 from another perspective;

[0043] Fig. 11 is a schematic view of the internal structure of the first housing;

[0044] Fig. 12 is a schematic view of the internal structure of the second housing, in which the length direction of the second slide and the first slide are consistent;

[0045] Fig. 13 is an exploded view of Fig. 12;

[0046] Fig. 14 is a schematic view of the internal structure of the second housing, in which the second slide is rotated and misaligned with the first slide;

[0047] Fig. 15 is a schematic view of the structure of the posture switching piece;

[0048] Fig. 16 is a schematic view of the structure of the second frame, showing that the blade is detachably connected to the second frame;

[0049] Fig. 17 is a schematic view of Fig. 16 from another perspective;

[0050] Fig. 18 is an exploded schematic view of the support assembly;

[0051] Fig. 19 is a schematic view of Fig. 18 from another perspective;

[0052] Fig. 20 is a comparative schematic view of the knife of embodiment 1 in different states;

[0053] Fig. 21 is a schematic view of the structure of the knife in embodiment 2;

[0054] Fig. 22 is a partially exploded view of the knife in Fig. 21, showing the outer sleeve and the third housing;

[0055] Fig. 23 is a partially exploded view of the knife in Fig. 21, showing the outer sleeve, the third housing and the storage frame;

[0056] Fig. 24 is an exploded view of the partial assembly of the knife in embodiment 2, with the outer sleeve and the third housing removed;

[0057] Fig. 25 is an exploded schematic view of the housing and the blade frame of the knife in embodiment 2;

[0058] Fig. 26 is a schematic view of the structure of the housing, showing the knife outlet;

[0059] Figure 27 is a structural diagram of the housing, showing the state in which the support assembly blocks the second cutting opening;

[0060] Figure 28 is a structural diagram of the first housing;

[0061] Figure 29 is a structural diagram of the second housing;

[0062] Figure 30 is a comparison diagram of the state after the blade extends out of the housing and the state after the blade rotates;

[0063] Figure 31 is a comparison diagram of the internal structure of the housing in two states after the second housing is removed;

[0064] Figure 32 is a structural diagram of the first push button;

[0065] Figure 33 is a comparison diagram of the internal structure of the second housing in two states;

[0066] Figure 34 is an enlarged diagram of the connection between the storage rack and the housing;

[0067] Figure 35 is an exploded diagram of Figure 34;

[0068] Figure 36 is a structural diagram of the knife in Example 3, showing the process of switching the blade from the storage state to the second state;

[0069] Figure 37 is an internal structural diagram of the housing of the knife shown in Figure 36, showing the state in which the holder slides along the slide;

[0070] Figure 38 is an internal structural diagram of the second housing of the knife shown in Figure 36, showing the state in which the first push button slides along the slide groove;

[0071] Figure 39 is an internal structural diagram of the first housing, showing that the slide includes a first part of the slide that is straight and a second part of the slide that is arc-shaped;

[0072] Figure 40 shows an internal structural diagram of the second housing;

[0073] Figure 41 shows the structure of the first push button;

[0074] Figure 42 shows a connection diagram of the first push button and the holder;

[0075] Figure 43 is a diagram of Figure 42 from another perspective;

[0076] Figure 44 shows a connection diagram of the holder and the first housing. DETAILED DESCRIPTION

[0077] The principles and uses of the teachings of the present application can be better understood with reference to the accompanying drawings and following description. The present application can be put into effect in various ways and should not be construed to be limited to the embodiments set forth herein.

[0078] In the drawings, the same numbers show the same components throughout several figures. The size and the relative sizes of the components in the drawings are intended to be illustrative of the principles of the present application and are not necessarily drawn to scale. In some instances, the thickness of certain layers or regions can have been exaggerated for clarity.

[0079] The terms "comprise" and "comprising", and any variations thereof, as used in the specification and claims, are intended to cover a non-exclusive inclusion, such that a process or method that comprises a list of technical features is not necessarily limited to those technical features that are expressly listed, but can include additional technical features that are not expressly listed or inherent to such process or method.

[0080] In the description of the application, it is to be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like refer to the orientation or position as shown in the drawings, and are only used to facilitate the description of the application and to simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application. Among them, "up" and "down", "left" and "right", "front" and "back" are opposite directions. Among them, the front-back direction represents the length direction X of the shell, the up-down direction represents the width direction Y of the shell, and the left-right direction represents the thickness direction Z of the shell.

[0081] In the description of the application, it is to be understood that the technical features defined by the terms "first", "second", etc. have a sequential concept, and are only used to clearly describe the defined technical features, so that the defined technical features can be clearly distinguished from other technical features, and do not represent the actual naming in the actual implementation, and therefore should not be construed as limiting the application.

[0082] The present application provides a kind of cutter, including shell, tool rest and blade.The shell is used to hold, its inside forms installation space, tool rest and blade are installed in the installation space.Blade is installed on tool rest, tool rest is installed in installation space, tool rest can be moved relative to shell, blade is moved together, so that blade can be extended from installation space to outside shell and be stored in installation space.Blade has two states relative to shell: in the first state, the cutting edge of blade is substantially parallel to the length direction of shell, in the second state, the cutting edge of blade forms a certain angle with the length direction of shell, preferably, the angle is substantially right angle, it should be understood that the angle between cutting edge and the length direction of shell is not limited to right angle, other angle that can facilitate the use of cutting edge to scrape, wipe operation can be, the angle can be determined according to actual use condition, the angle does not include the case of 0 °.Specifically, blade is in the first state, when tool rest moves to preset position along the length direction of shell, at least a part of tool rest can be rotated relative to shell, blade installed on tool rest rotates together, so that blade switches to the second state.In the first state, the cutter is used as practical knife, can be operated, such as cutting, to object, in the second state, the cutter is used as scraper.The present application controls the movement of tool rest, and then drives the movement of blade, to realize the state switching of blade.In addition, blade is detachably installed on tool rest, when blade is damaged, the blade can be conveniently replaced.The present application will be described in detail in conjunction with multiple embodiments.

[0083] Embodiment 1

[0084] Embodiment 1 is shown in FIGS. 1-20.

[0085] Referring to FIG. 1 and FIG. 5, the present embodiment provides a cutter 100, which comprises a housing 110, a holder 120 and a blade 130. As shown in FIG. 3, the housing 110 comprises a first housing 111 and a second housing 112 oppositely arranged, and the first housing 111 and the second housing 112 are assembled together to form a mounting space therebetween, and the housing 110 can be used as a handle for holding. As shown in FIG. 7-10, the holder 120 is a split structure comprising a first holder body 121 and a second holder body 122, and the blade 130 is mounted on the second holder body 122, and the second holder body 122 is rotatably connected with the first holder body 121. The first holder body 121 is slidably mounted in the mounting space of the housing 110 and is configured to slide along the length direction of the housing 110, and the first holder body 121 slides with the second holder body 122 to extend the blade 130 out of the housing 110 or to retract the blade 130 into the housing 110. When the first holder body 121 slides with the blade 130 to extend the blade 130 out of the housing 110, the blade 130 is in a first state, and the blade edge 131 of the blade 130 is substantially parallel to the length direction of the housing 110. At this time, an external force can be applied to the second holder body 122 to rotate the second holder body 122 relative to the first holder body 121, and the blade 130 rotates with the second holder body 122 to switch the blade 130 to a second state, and at this time, the blade edge 131 of the blade 130 forms an angle with the length direction of the housing 110, and preferably, the angle is substantially 90°. It should be understood that the angle between the blade edge 131 and the length direction of the housing 110 is not limited to a right angle, and other angles that can facilitate the use of the blade edge 131 for scraping and wiping operations can also be used, and the angle can be determined according to the actual use condition, and the angle does not include the case where the angle is 0°.

[0086] As shown in FIG. 3 and FIG. 4, the first housing 111 and the second housing 112 are oppositely arranged and are fixed together by fasteners to form a mounting space therebetween, and the housing 110 has a blade outlet 114 at the front end (one end of the length direction X of the housing) to extend the blade 130 out of the housing. Referring to FIG. 11, the inner side of the first housing 111 is provided with a first slide 1110 extending along the length direction X of the first housing 111. The first holder body 121 falls into the first slide 1110 and slides along the length direction X of the first housing 111 under the limitation of the first slide 1110.

[0087] To facilitate the application of external force on the first frame 121, preferably, referring to FIG. 9, a first push button 123 is connected to the first frame 121, one end of the first push button 123 is inserted into the first frame 121, and the other end protrudes out of the housing 110. The housing 110 is provided with a sliding groove 115 at the position where the first push button 123 protrudes out, the extension direction of the sliding groove 115 is consistent with the extension direction of the first sliding channel 1110, so as to facilitate the sliding of the first push button 123 along the sliding groove 115. The sliding groove 115 can be provided on the first housing 111, or provided at the joint of the first housing 111 and the second housing 112, for example, as shown in FIG. 1, the sliding groove 115 is provided on one side of the housing 110 along the height direction Y. In some embodiments, as shown in FIG. 5 and FIG. 9, the first sliding channel 1110 is provided with a locking mechanism, when the first frame 121 moves to the locking mechanism, the locking mechanism can lock the first frame 121 to keep the first frame 121 at the current position. Preferably, the locking mechanism includes a plurality of detent grooves 116 provided on the side wall of the first sliding channel 1110 along the length direction, which are sequentially distributed along the side wall. The first push button 123 is provided with a shoulder 1231 which can fall into the detent groove 116, and a first elastic element 124 is provided between the first push button 123 and the first frame 121, which exerts a elastic force on the first push button 123. When the first push button 123 is located at a certain detent groove 116, the shoulder 1231 of the first push button 123 is pushed into the detent groove 116 under the elastic force of the first elastic element 124, and the position of the first frame 121 is locked due to the limitation of the detent groove 116. After an external force is applied on the first push button 123 to overcome the elastic force of the first elastic element 124, the shoulder 1231 is out of the detent groove 116, and the limitation on the first frame 121 is released, so that the first frame 121 can continue to slide along the first sliding channel 1110. When the shoulder 1231 of the first push button 123 falls into the detent groove 116 closest to the cutting edge outlet, the cutting blade 130 protrudes out of the housing by a longer length, at this time, the blade holder 120 is at the state switching position, and if an external force is applied on the second frame 122, the second frame 122 can be rotated to switch the state of the cutting blade 130.

[0088] As shown in FIG. 9 and FIG. 10, the blade holder 120 includes a first frame 121 and a second frame 122, the second frame 122 is rotatably connected to the first frame 121 at one end close to the cutting edge outlet 114. The first frame 121 and the second frame 122 are respectively provided with a shaft 1210 and a hole 1220, the shaft 1210 penetrates into the hole 1220 to enable the second frame 122 to rotate relative to the first frame 121 when the second frame 122 is not constrained. The second frame 122 is switched between the first state and the second state by rotating relative to the first frame 121. The cutting blade 130 is installed on the second frame 122 to switch the state with the state switching of the second frame 122.

[0089] As shown in FIG. 12, the second housing 112 is provided with a second slide 1120, and the second holder 122 is provided with a protrusion 1221 matched with the second slide 1120. When the first holder 121 slides along the first slide 1110, the protrusion 1221 on the second holder 122 slides along the second slide 1120. In the whole stroke of the knife holder 120 sliding along the length direction of the housing 110, the first holder 121 and the first slide 1110 are always in sliding matching state.

[0090] In the stroke of the slide of the tool holder 120 along the length direction of the housing 110, there is a state switching position, which is located at the limit position of the slide of the tool holder 120 relative to the housing 110 in the direction of the exit knife edge 114, for example, as shown in Fig. 5, when the shoulder 1231 of the first holder body 121 falls into the stop slot 116 closest to the exit knife edge, the tool holder 120 is at the state switching position. When the tool holder 120 is at the state switching position, the second holder body 122 is allowed to switch between the first state and the second state. This is achieved by dividing the second slide 1120 into two sections. As shown in Fig. 12, the end of the second housing 112 close to the exit knife edge 114 is provided with a rotatable h-piece 140, the second slide 1120 includes a first section slide 1121 provided on the second housing 112 and a second section slide 1122 provided on the state switching piece 140, the first section slide 1121 extends along the length direction of the housing 110, and in the initial position of the state switching piece 140, the second section slide 1122 communicates with the second section slide 1122, and the second slide 1120 formed by the two sections extends along the length direction of the housing 110. As shown in Fig. 14, when the state switching piece 140 is rotated, the second section slide 1122 is no longer in communication with the first section slide 1121, and the two sections are misaligned. In the process of the slide of the tool holder 120 along the length direction of the housing 110 and before the tool holder 120 reaches the state switching position, the first section slide 1121 and the second section slide 1122 are in communication, and the second slide 1120 formed by the two sections extends along the length direction of the housing 110, at this time, the protruding part 1221 of the second holder body 122 slides along the length direction of the housing 110, and due to the guidance and constraint of the second slide 1120, the second holder body 122 can only slide along the first section slide 1121 along the length direction of the housing 110. When the tool holder 120 moves to the state switching position, the protruding part 1221 of the second holder body 122 completely falls into the second section slide 1122, and the sliding cooperation with the first section slide 1121 is broken, at this time, the second holder body 122 can be rotated by the state switching piece 140 to change the state, and the second holder body 122 will not be constrained by the first section slide 1121. When the tool holder 120 leaves the state switching position, the protruding part 1221 cooperates with the first section slide 1121, and due to the constraint and guidance of the first section slide 1121, the second holder body 122 cannot be moved by the state switching piece 140, so as not to change the state.In other words, when the second holder 122 is switched in the first state, the first section slide 1121 and the second section slide 1122 are in the same direction and extend in the same direction, and the complete second slide 1120 formed thereby extends along the length direction of the shell, so that the second holder 122 can only slide along the length direction of the shell together with the first holder 121; when the tool holder 120 is in the state switching position, the protruding part 1221 of the second holder 122 is disengaged from the first section slide 1121 and is completely engaged with the second section slide 1122, and the second holder 122 is subjected to the restraining action of the second section slide 1122, so that the second holder 122 rotates together with the state switching piece 140 when the state switching piece 140 rotates, thereby realizing state transformation; when the second holder 122 is in the second state, the second section slide 1122 is dislocated from the first section slide 1121, and at this time, if the second holder 122 is moved along the length direction of the shell 110, it will be hindered by the second section slide 1122, thereby preventing the entire tool holder 120 from moving along the length direction of the shell.

[0091] The posture switching member 140 is rotatably arranged at one end of the second housing 112. As shown in FIG. 15, the posture switching member 140 is provided with an axle hole 144 on the side facing the second housing 112, and the second housing 112 is provided with an axle 1126 (see FIG. 8) which can be inserted into the axle hole 144, and the posture switching member 140 rotates relative to the second housing 112 with the axle 1126 as the center. In some embodiments, as shown in FIGS. 12 and 15, the second housing 112 is provided with an arc-shaped side wall 1123, and the shape of the arc-shaped part of the arc-shaped side wall 1123 matches the rotating track of the second frame body 122; the posture switching member 140 has an arc-shaped side edge which cooperates with the arc-shaped side wall 1123, and when the posture switching member 140 rotates, the arc-shaped side edge slides along the arc-shaped side wall 1123, thereby limiting the rotating track of the posture switching member 140, and further driving the second frame body 122 to rotate along the predetermined track. In some embodiments, as shown in FIGS. 15 and 20, the posture switching member 140 is connected with a second push button 141, one end of the second push button 141 is connected to the posture switching member 140, and the other end of the second push button 141 penetrates out of the second housing 112 to the outside of the housing 110, and an external force applied on the second push button 141 can drive the posture switching member 140 to rotate. In some embodiments, as shown in FIGS. 7 and 15, the second push button 141 and the posture switching member 140 are provided with a second elastic element 142, the second push button 141 is provided with a positioning protrusion 143, and the second housing 112 is provided with a plurality of positioning grooves 117, and the positioning protrusion 143 can fall into the positioning grooves 117. The positioning grooves 117 are distributed on the moving track of the posture switching member 140, and when the second push button 141 drives the posture switching member 140 to rotate, the second push button 141 moves to the corresponding positioning groove 117, and the positioning protrusion 143 can fall into the positioning groove 117, thereby locking the posture switching member 140 at the current position. Preferably, as shown in FIG. 13, one positioning groove 117 is arranged at the initial position of the posture switching member 140, and one positioning groove 117 is arranged at the final position of the posture switching member 140. The second elastic element 142 applies an elastic force on the second push button 141 to drive the second push button 141 to move away from the posture switching member 140, and when the second push button 141 is located at the position of the positioning groove 117, the external force applied on the second push button 141 is released, and the elastic force of the second elastic element 142 drives the positioning protrusion 143 of the second push button 141 to fall into the positioning groove 117 at this position, thereby locking the posture switching member 140 at the current position. An external force applied on the second push button 141 to press the second push button 141 can overcome the elastic force, and the positioning protrusion 143 can be separated from the positioning groove 117, thereby unlocking the posture switching member 140, and further driving the posture switching member 140 to rotate.In some embodiments, the second shell 112 is provided with an arc-shaped sliding groove 1124, the second push button 141 passes out of the shell 110 from the arc-shaped sliding groove 1124, and the second push button 141 can move along the arc-shaped sliding groove 1124, i.e., the arc-shaped sliding groove 1124 can guide the movement of the second push button 141, and the positioning grooves 117 are respectively arranged at two ends of the arc-shaped sliding groove 1124.

[0092] In some embodiments, in order to facilitate assembly, referring to FIG. 13, the second shell 112 is provided with a fixing member 1125, the fixing member 1125 is installed on the inner side of the second shell 112, and the first section sliding groove 1121 is arranged on the fixing member 1125. The fixing member 1125 is provided with an arc-shaped side wall 1123 at the end thereof facing the knife outlet, and the arc-shaped side edge of the posture switching member 140 cooperates with the arc-shaped side wall 1123 of the fixing member 1125.

[0093] In some embodiments, when the tool holder 120 is located at the state switching position and is not switched to the second state, part of the blade 130 extends out of the housing 110, and part of the blade 130 is still located in the housing 110, so that the blade 130 can be conveniently used for cutting operation, and the blade 130 is not easy to break. Referring to FIG. 4, if the state of the tool holder 120 is switched at this time, i.e., switched from the first state to the second state, the part of the blade 130 located in the housing needs to extend out of the housing from the side of the housing adjacent to the blade outlet 114 (i.e., one side of the housing along the width direction Y), therefore, the blade outlet 114 needs to be extended to the side, so as to avoid blocking the rotation of the blade 130. That is, the blade outlet 114 can be divided into two parts: a first blade outlet 1141 located at the end of the housing along the length direction, and a second blade outlet 1142 located at the side adjacent to the end, and the first blade outlet 1141 and the second blade outlet 1142 are through. At this time, a support assembly 150 can be arranged at the second blade outlet 1142. When the blade 130 is in the first state, the support assembly 150 blocks the second blade outlet 1142. When the blade 130 is in the second state, the support assembly 150 can support the blade 130. When it is necessary to switch the state of the blade 130, the support assembly 150 is first moved to unblock the second blade outlet 1142, and then the second holder 122 is rotated, so that the part of the blade 130 located in the housing is rotated from the second blade outlet 1142 to outside the housing. When the second holder 122 is rotated to the position, the support assembly 150 can be moved to the second blade outlet 1142 to block the second blade outlet 1142, and the support assembly 150 can also support the second holder 122. In some embodiments, referring to FIGS. 18 and 19, the support assembly 150 includes a support member 151 in the shape of a rod, one end of the support member 151 is rotatably connected to the housing, and the other end of the support member 151 can contact the second holder 122 in the second state to support the second holder 122. In order to facilitate locking the support member 151 on the second housing 112, the support member 151 is hollow inside, and a sliding member 152 movable along the support member 151 is arranged inside the support member 151, when the support member 151 blocks the second blade outlet 1142, the end of the sliding member 152 is clamped on the second housing 112 to lock the support member 151; when it is necessary to move the support member 151, the end of the sliding member 152 is disengaged from the second housing 112 by sliding the sliding member 152 along the support member 151. Preferably, a third push button 154 is connected to the sliding member 152, a third elastic element 153 is arranged between the sliding member 152 and the support member 151, the third elastic element 153 exerts a elastic force on the sliding member 152 to make the end of the sliding member 152 engage with the second housing 112, an external force is exerted on the third push button 154 to overcome the elastic force, so as to move the sliding member 152 to make the end of the sliding member 152 disengage from the second housing 112, so as to unlock the support member 151, and the support member 151 can be freely rotated.

[0094] Referring to Figs. 16 and 17, the blade 130 is detachably mounted on the second holder 122. In some embodiments, the second holder 122 is configured with a tool changing structure, and the second holder 122 is switched to the first state and extends out of the housing to expose the tool changing structure. The tool changing structure includes a swing member 1222, the middle part of which is pivotally arranged on the second holder 122, and the upper end of which is exposed outside the second holder 122. The lower end of the swing member 1222 is provided with a hook 1225, and the blade 130 is locked by the hook 1225 in the mounting hole 132 of the blade 130 by the elastic force of the fourth elastic element 1223. When the blade 130 is to be replaced, the upper end of the swing member 1222 is pushed to the right side to make the swing member 1222 swing, and the hook 1225 at the lower end of the swing member 1222 is disengaged from the mounting hole 132 of the blade 130 to unlock the blade 130, so that the blade 130 can be pulled out of the second holder 122 and a new blade 130 can be inserted. In order to facilitate assembly, the second holder 122 is composed of two plate-shaped members 1224 which are arranged side by side and fastened together, and the swing member 1222 and the fourth elastic element 1223 are arranged between the two plate-shaped members 1224. The fourth elastic element 1223 includes but is not limited to a spring, a spring piece, etc. For example, the spring piece is shown in the figure. It should be understood that other tool holders 120 structures that can realize the detachment of the blade 130 can also be applicable to the present application.

[0095] The tool 100 of the present embodiment can be switched from the first state to the second state by the following operations:

[0096] (1) From the state shown in Fig. 20d, the support member 151 is flipped to the state shown in Fig. 20c to make room for the rotation of the second holder 122;

[0097] (2) From the state shown in Fig. 20c, the second holder 122 202 is rotated by operating the posture switching member 140 to make the second holder 122 rotate to the second state shown in Fig. 20b;

[0098] (3) From the state shown in Fig. 20b, the support member 151 is flipped to the state shown in Fig. 20a to reach the supporting position. At this time, the utility knife can be used as a spade or a scraper.

[0099] To store the blade 130 into the handle from the state shown in Fig. 20a, the second holder 122 with the blade 130 is restored to the state shown in Fig. 20d in the reverse order of the above operations, and then the entire tool holder 120 is moved backward by operating the push button.

[0100] Embodiment 2

[0101] The cutter in embodiment 1 adopts a split structure, and a part of the cutter holder 120 can rotate relative to the shell, thereby driving the blade to rotate to switch the state of the blade. In this embodiment, the cutter holder 220 adopts a whole structure, and the whole cutter holder can rotate relative to the shell, thereby driving the blade to switch the state.

[0102] Figures 21-35 show embodiment 2. Referring to Figure 21, this embodiment provides a cutter 200, which includes a shell 210, a cutter holder 220, and a blade 230. As shown in Figures 24 and 25, the shell 210 includes oppositely arranged first and second shells 211 and 212, and the installation space is formed between the two shells after they are assembled together. The cutter holder 220 is of a whole structure, i.e., there is only one holder body, and the blade 230 is detachably installed on the cutter holder 220. The cutter holder 220 is slidably installed in the installation space of the shell and is configured to slide along the length direction of the shell. The cutter holder 220 slides together with the blade 230, so that the blade 230 extends out of the shell 210 or is retracted into the shell 210. Referring to Figure 30, when the cutter holder 220 slides together with the blade 230 to extend the blade 230 out of the shell, the blade 230 is in a first state (Figure 30b), and the blade edge 231 of the blade 230 is substantially parallel to the length direction of the shell. An external force can be applied to the cutter holder 220, so that the cutter holder 220 rotates relative to the shell, and the blade 230 rotates together with the cutter holder 220, thereby switching the blade 230 to a second state (Figure 30a), and the blade edge 231 of the blade 230 forms an angle with the length direction of the shell, preferably, the angle is substantially 90°. It should be understood that the angle between the blade edge 231 and the length direction of the shell 210 is not limited to a right angle, and other angles that can facilitate the use of the blade edge for scraping and wiping operations can also be used, and the angle can be determined according to the actual use condition. The angle does not include the case where the angle is 0°.

[0103] As shown in Figures 26 and 27, the first and second shells 211 and 212 are oppositely arranged and are fixed together by fasteners, and the installation space is formed between the two shells, and the shell has a blade outlet 213 at the front end (the direction indicated as “front” in the figure). As shown in Figure 28, the inner side of the first shell 211 is provided with a slide way 2111 extending along the length direction of the first shell 211. The side of the cutter holder 220 facing the first shell 211 is provided with a protruding part 221, which falls into the slide way 2111 and can slide along the length direction of the first shell 211 under the limitation of the slide way 2111 and the action of an external force.

[0104] Referring to FIGS. 24 and 25, to facilitate the application of external force on the knife holder 220, preferably, a first push button 222 is connected to the knife holder 220, one end of the first push button 222 is inserted into the knife holder 220, and the other end protrudes out of the housing 210 through the second housing 212. Referring to FIG. 29, the second housing 212 is provided with a sliding groove 214 at the position where the first push button 222 protrudes out, the extension direction of the sliding groove 214 is consistent with the extension direction of the sliding channel 2111, so as to allow the first push button 222 to slide along the sliding groove 214. In some embodiments, the second housing 212 is provided with a locking mechanism, when the knife holder 220 moves to the locking mechanism, the locking mechanism can lock the knife holder 220, so as to keep the knife holder 220 at the current position. Preferably, the locking mechanism includes a plurality of stop grooves 215 distributed along the length direction of the sliding groove 214, the first push button 222 is provided with a shoulder 2221 which can fall into the stop groove. Due to the limitation of the stop groove 215, the position of the knife holder 220 is locked. The number of stop grooves 215 can be set according to actual needs. In the embodiment shown in FIG. 29, two stop grooves 215 are provided in the embodiment, wherein the first stop groove 2151 is located at the end of the sliding channel 2111 away from the cutting edge 213, and the second stop groove 2152 is located at the end of the sliding channel 2111 close to the cutting edge 213. When the first push button 222 is located at the first stop groove 2151, the blade 230 is completely stored in the housing; when the first push button 222 is located at the second stop groove 2152, the blade 230 protrudes out of the housing and can be used as a utility knife.

[0105] In this embodiment, the tool holder 220 can slide along the slide 2111 in the housing 210 as a whole, and can also rotate relative to the housing 210 as a whole. In the process of sliding the tool holder 220 along the length direction of the housing 210, there is a state switching position, which is located at the limit position of the tool holder 220 sliding relative to the housing to the outlet 2610. For example, as shown in FIGS. 30, 31 and 33, FIGS. 30b, 31b and 33b show the tool holder in the first state, and FIGS. 30a, 31a and 33a show the tool holder in the second state. As can be seen from FIG. 33, when the shoulder 2221 of the first push button 222 falls into the second stop groove 2152, the tool holder 220 is at the state switching position, and the second stop groove 2152 can limit the movement of the first push button 222 along the length direction of the slide 2111, but does not limit the rotation of the first push button 222. Rotating the tool holder 220 in turn switches the state of the blade 230, and the tool holder 220 is subjected to the torque of the first push button 222 to rotate relative to the housing with the convex portion 221 as the axis. Preferably, the convex portion 221 can be provided in a cylindrical shape to facilitate rotation. In some embodiments, as shown in FIG. 32, the first push button 222 has a neck portion 2222 between the shoulder 2221 and the pressing portion 2223, and the length direction size L2 of the neck portion 2222 is greater than the width direction size L1 thereof. Before the tool holder 220 is rotated, the length direction of the neck portion 2222 is consistent with the length direction of the slide groove 214, and the width direction size L1 thereof matches the width L3 of the slide groove 214. The guiding and limiting effect of the slide groove 214 enables the first push button 222 to slide along the slide groove 214, thereby driving the tool holder 220 to slide along the slide 2111. A circular region 2141 is formed on the slide groove 214 at the second stop groove 2152, and when the shoulder 2221 of the first push button 222 enters the second stop groove 2152, the neck portion 2222 is in the circular region 2141, and the diameter of the circular region 2141 matches the length size L2 of the neck portion 2222, so that the circular region 2141 does not limit the rotation freedom of the neck portion 2222, and because the length size of the neck portion 2222 is greater than the width size, after the first push button 222 is rotated, the length direction of the neck portion 2222 is misaligned with the length direction of the slide groove 214, thereby limiting the neck portion 2222 from entering the slide groove 214, i.e., limiting the freedom of the first push button 222 in the length direction of the slide groove 214. The first housing 211 is provided with a blocking portion 2112 at one side edge in the width direction, which is located at the end of the rotation stroke of the tool holder 220.Turning the first push button 222, the knife holder 220 is rotated together, when the knife holder 220 is rotated to switch to the second state, the end of the side of the knife holder 220 away from the blade is blocked by the blocking part 2112, so as to limit the rotation stroke of the knife holder 220, so as to position the knife holder 220, at the same time, the blocking part 2112 can also play a supporting role, so that the blade 230 has better support when used as a scraper in the second state. In addition, when the blade 230 is in the first state, the other side of the blocking part 2112 blocks the knife holder 220, so that the knife holder 220 is well positioned in the first state. Preferably, as shown in FIG. 31, the blocking part 2112 is a boss formed by protruding from the inner side wall of the first shell 211 to the second shell 212, and the boss has two adjacent side surfaces, one of which 2112a can be in contact with the knife holder 220 in the second state, and the other side surface 2112b can be in contact with the knife holder 220 in the first state. In some embodiments, as shown in FIG. 28, when the knife holder 220 is located at the state switching position, the knife holder 220 is located at the end of the sliding groove 214, and the bottom of the sliding groove 214 is provided with a certain slope at the end. When the knife holder 220 moves to the slope position 2113, the slope of the bottom of the sliding groove 214 will promote the knife holder 220 to move horizontally to the second shell 212, so that the shoulder 2221 of the first push button 222 can fall into the second blocking groove 2152 more quickly and the neck 2222 enters the circular area 2141 of the sliding groove 214, facilitating the rotation of the first push button 222 and the rotation of the knife holder 220.

[0106] In some embodiments, referring to Figs. 26 and 27, when the tool holder 220 is located at the state switching position and is not switched to the second state, part of the blade 230 extends out of the housing 210, and part of the blade 230 is still located in the housing 210, so that the blade 230 can be conveniently used for cutting operation, and the blade 230 is not easy to break. If the state of the tool holder 220 is switched at this time, i.e., switched from the first state to the second state, the part of the blade 230 located in the housing needs to extend out of the side of the housing (i.e., one side of the housing along the width direction Y), therefore, the tool outlet 213 needs to be extended to the side to avoid blocking the rotation of the blade 230. That is, the tool outlet 213 can be divided into two parts: a first tool outlet 2131 located at the end of the housing along the length direction, and a second tool outlet 2132 located at the side adjacent to the end, and the first tool outlet 2131 and the second tool outlet 2132 are through. At this time, a support assembly 250 can be arranged at the second tool outlet 2132. When the blade 230 is in the first state, the support assembly 250 blocks the second tool outlet 2132. Referring to Fig. 31a, when the blade 230 is in the second state, the support assembly 250 can support the tool holder 220. When it is necessary to switch the state of the blade 230, the support assembly 250 is first moved to unblock the second tool outlet 2132, and then the tool holder 220 is rotated so that the part of the blade 230 located in the housing extends out of the housing 210 from the second tool outlet 2132. When the tool holder 230 is rotated to the position, the support assembly 250 can be moved to the second tool outlet 2132 to block, and the support assembly 250 can also support the tool holder 220. In some embodiments, as shown in Fig. 25, the support assembly 250 includes a support member 251 in the form of a rod, one end of the support member 251 is rotatably connected to the housing 210, and the other end of the support member 251 can contact the tool holder 220 in the second state to support the tool holder 220. The second push button 252 is connected to the support member 251, and by applying force on the second push button 252, the support member 251 can be driven to rotate relative to the housing 210.

[0107] In some embodiments, referring to FIGS. 22 and 23, a third housing 260 is connected to the end of the housing 210 opposite the cutting opening 213, which can extend the length of the housing 210, thereby facilitating operation. In some embodiments, a storage space 261 is provided in the third housing 260, which can be used to store spare blades 262. An exit 2610 can be provided on the end of the third housing 260 away from the blade holder 220, facilitating the storage and removal of the spare blades 262. To facilitate storage, a storage rack 263 can also be provided in the storage space 261, which is provided with an area for storing spare blades 262. In some embodiments, referring to FIGS. 34 and 35, to facilitate the fixation and removal of the storage rack 263, a fixation mechanism is provided in the third housing 260, which is used to fix the storage rack 263 in the storage space 261. When it is necessary to remove the storage rack 263, the fixation mechanism is operated to release the locking of the storage rack 263, and then the storage rack 263 is removed from the exit 2610 of the third housing 260. In some embodiments, the fixation mechanism can include a locking member 264 and a button 265. One end of the locking member 264 is connected to the housing, and the locking member 264 is provided with a first fixation portion 267. The portion of the storage rack 263 facing the locking member 264 is provided with a second fixation portion 266, which cooperates with the first fixation portion 267 to fix the locking member 264. The side of the locking member 264 opposite the first fixation portion 267 is provided with a second elastic element 268, which exerts a force on the locking member 264, which urges the first fixation portion 267 of the locking member 264 to lock the second fixation portion 266. An external force is applied to the locking member 264 to overcome the force, causing the locking member 264 to shift, and the first fixation portion 267 to shift together, thereby releasing the locking of the second fixation portion 266, and further unlocking the storage rack 263. Preferably, the side of the locking member 264 facing the housing is provided with a hole 269, and the housing is provided with a column 216, which is inserted into the hole 269, connecting the locking member 264 to the housing. The locking member 264 can rotate about the main body to shift. The first fixation portion 267 and the second elastic element 268 are respectively located on the two sides of the locking member 264.

[0108] The blade 230 is detachably mounted on the blade holder 220, and the structure is substantially the same as that in which the blade 230 is mounted on the second housing body in Embodiment 1, with the only difference being that the fourth elastic element in Embodiment 1 is a spring, and the elastic element used in this embodiment is a spring (see FIG. 25).

[0109] In some embodiments, an outer cover 270 is also provided, which covers the housing and the third housing 260.

[0110] In this embodiment, the blade is switched from the first state to the second state by the following operation:

[0111] (1) When the blade 230 is in the housing 210, the first push button 222 is pushed, so that the blade holder 220 and the blade 230 are extended out of the housing, i.e. in the state shown in Fig. 30b, at this time the blade 230 is still in the first state;

[0112] (2) The support member 251 is rotated to expose the second blade outlet 2132;

[0113] (3) The first push button 222 is at the circular area 2141 of the sliding groove 214, and its rotation freedom relative to the housing 210 is not limited, rotating the first push button 222 drives the blade holder 230 to rotate, after rotation to the position, the blade 230 is in the second state, then rotate the support member 251 to block the second blade outlet 2132, the tool 200 is in the state shown in Fig. 30a.

[0114] To store the blade 230 into the housing 210 from the state shown in Fig. 30a, the first push button is sequentially reversed to the state shown in Fig. 30b by the above-mentioned operation, and then the blade holder 220 is moved backward by operating the first push button 222.

[0115] Embodiment 3

[0116] In embodiment 2, the first push button 222 is rotated relative to the housing 210 to drive the entire blade holder 230 to rotate, so as to realize the state switching of the blade holder and the blade. Compared with embodiment 2, the difference of this embodiment is only that the state switching is realized by the sliding groove with arc-shaped area arranged in the housing, instead of the rotation of the first push button. The difference between this embodiment and embodiment 2 will be mainly described below, and other components are the same as those in embodiment 2, such as the support assembly 350, the third housing, the structure for storing spare blades, the sleeve, the detachable connection of the blade to the blade holder, the structure for locking the blade holder at a specific position, etc., which will not be described again.

[0117] Figures 36-44 show Example 3. As shown in Figure 36, the present example provides a knife 300, which includes a housing 310, a holder 320 and a blade 330. As shown in Figures 39 and 40, the housing includes a first housing 311 and a second housing 313 oppositely arranged, and when the two are assembled together, a mounting space is formed between the two. Referring to Figures 37, 43 and 44, the holder 320 is of a unitary structure, i.e. there is only one holder body, and the blade 330 is detachably mounted on the holder 320. The holder 320 is slidably mounted in the mounting space of the housing 310 and is configured to slide along the length direction of the housing 310. When the holder 320 slides, the blade 330 is brought to slide together, so that the blade 330 is extended out of the housing 310 or retracted into the housing 310. As shown in Figures 36c, 37c, when the holder 320 brings the blade 330 to slide to extend out of the housing 310, the cutting edge of the blade 330 is substantially parallel to the length direction of the housing, and the blade 330 is in a first state. Continue to slide the holder 320, the holder 320 will gradually rotate, thereby switching the blade 330 to a second state (see Figures 36a and 37a), the cutting edge 331 of the blade 330 forms an angle with the length direction of the housing, preferably, the angle is substantially 90°. It should be understood that the angle between the cutting edge 331 and the length direction of the housing 310 is not limited to a right angle, other angles that can facilitate the use of the cutting edge for scraping and wiping operations are also possible, and the angle can be determined according to the actual use condition. The angle does not include the case where the angle is 0°.

[0118] The first housing 311 and the second housing 313 are oppositely arranged and fixed together by fasteners, forming a mounting space therebetween, and having a cutting outlet 314 at the front end (indicated as "X" direction in FIG. 36) of the housing 310. Referring to FIG. 39, the inner side of the first housing 311 is provided with a slide 312, which includes two parts, i.e. a first part slide 3121 and a second part slide 3122, wherein the first part slide 3121 is communicated with the second part slide 3122, the first part slide 3121 extends along the length direction of the first housing 311, and the second part slide 3122 is near the cutting outlet 314 of the first housing 311, and the second part slide 3122 is arc-shaped. Referring to FIG. 43, the side of the tool holder 320 facing the first housing 311 is provided with a protrusion 321, which falls into the slide 312 and can move along the slide 312 under the limitation of the slide 312 and the action of external force. Referring to FIGS. 41 and 42, in order to push the tool holder 320 to move, the tool holder 320 is connected with a first push button 322, one end of which is inserted into the tool holder 320 and the other end protrudes outside the housing 310 through the second housing 313. Referring to FIG. 40, the second housing 313 is provided with a slide groove 315 at the position where the first push button 322 protrudes, and the extension direction of the slide groove 315 is consistent with the length direction of the housing, so as to slide the first push button 322 along the slide groove 315, wherein under the limitation of the slide groove 315, the first push button 322 can only move along the length direction of the housing 310, and the first push button 322 cannot rotate relative to the housing 310. Preferably, as shown in FIG. 41, the first push button 322 has a neck portion 3222, and the size L2 of the neck portion 3222 in the length direction is greater than the size L1 of the neck portion 3222 in the width direction, wherein the length direction of the neck portion 3222 is consistent with the length direction of the slide groove 315, and the width size L1 of the neck portion 3222 is consistent with the width L3 of the slide groove 315 (FIG. 40), so that when the first push button 322 slides in the slide groove 315, it is limited by the slide groove 315 and can only move along the length direction of the housing, and cannot rotate.As shown in FIGS. 36 and 37, when an external force is applied to the first push button 322, the first push button 322 slides along the sliding groove 315, and drives the knife holder 320 to slide. When the protruding part 321 of the knife holder 320 is in the first part sliding groove 3121, the knife holder 320 moves along the length direction of the shell. When the protruding part 321 moves out of the first part sliding groove 3121 and enters the second part sliding groove 3122, i.e. when the protruding part 321 moves to the joint of the first part sliding groove 3121 and the second part sliding groove 3122, the knife holder 320 is in the state switching position. Since the second part sliding groove 3122 is in an arc shape (i.e. an arc sliding groove), the trajectory of the movement of the knife holder 320 along the second part sliding groove 3122 is no longer a straight line but an arc. However, the first push button 322 that drives the movement of the knife holder 320 cannot rotate due to the limitation of the sliding groove 315. Therefore, the knife holder 320 starts to rotate relative to the first push button 322 and the shell 310 with the protruding part 321 as the axis. When the knife holder 320 moves to the end of the second part sliding groove 3122, the knife holder 320 completes the rotation and switches from the first state to the second state.

[0119] In some embodiments, referring to FIGS. 38 and 40, the second shell 313 is provided with a locking mechanism. When the knife holder 320 moves to the locking mechanism, the locking mechanism can lock the knife holder 320 to keep the knife holder 320 at the current position. Preferably, the locking mechanism includes a plurality of stop grooves 3151 distributed along the length direction of the sliding groove 315, and the first push button 322 is provided with a shoulder part 3221 that can fall into the stop groove. Due to the limitation of the stop groove, the position of the knife holder 320 is locked. The number of stop grooves can be set according to actual needs. In the embodiment shown in the figures, two stop grooves are provided. The first stop groove 3151a is located at the end of the sliding groove 312 away from the cutting edge 314, and the second stop groove 3151b is located at the end of the sliding groove 312 close to the cutting edge 314. When the first push button 322 is located in the first stop groove 3151a, the blade 330 is completely stored in the shell; when the first push button 322 is located in the second stop groove 3151b, the blade 330 is in the second state.

[0120] The process of switching the knife holder from the first state to the second state of the embodiment will be described in detail below in combination with FIGS. 36, 37 and 38:

[0121] (1) FIGS. 36d, 37d and 38d show the state that the knife holder 320 is stored in the shell 310: the protruding part 321 of the knife holder 320 is in the first part sliding groove 3121 of the first shell 311, and the first push button 322 is located in the first stop groove 3151a.

[0122] (2) push the first push button 322, drive the tool holder 320 to move linearly along the first part of the slide 3121 to the state shown in Fig. 36c, 37c, 38c, the blade 330 extends from the knife outlet 314 to the outside of the shell 310, the convex part 321 of the tool holder 320 is at the junction of the first part of the slide 3121 and the second part of the slide 3122, that is, the tool holder is in a state switching position;

[0123] (3) open the support assembly 350, remove the blockage of the side of the knife outlet, that is, the state shown in Fig. 36b, 37b, 38b;

[0124] (4) continue to push the first push button 322, due to the restriction of the slide groove 315, the first push button 322 can only move linearly, and the convex part 321 of the tool holder 320 has entered the second part of the slide 3122, under the guidance of the arc-shaped second part of the slide 3122, the movement trajectory of the convex part 321 is arc-shaped, since the first push button 322 can only move linearly, therefore, the tool holder 320 rotates relative to the first push button 322 and the shell 310 until the end of the stroke, then rotate the support assembly 350 to block the side of the knife outlet again, that is, the state shown in Fig. 36a, 37a, 38a. At this time, the first push button 322 is located in the second stop slot.

[0125] To store the blade 330 into the shell 310 from the state shown in Fig. 36a, sequentially reverse the above-mentioned operation to make the first push button with the blade 330 return to the state shown in Fig. 36b, then move the tool holder 320 backward by operating the first push button 322.

[0126] The above describes the preferred embodiments of the present application in detail. It should be understood that those skilled in the art can make many modifications and changes without creative labor based on the concept of the present application. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment based on the existing technology according to the concept of the present application shall be within the protection scope determined by the claims.

Claims

1. A cutting tool, characterized in that: It includes a housing, a blade holder and a blade, wherein: The blade is mounted on the blade holder, which is mounted in the housing. The housing is provided with a blade outlet, and the blade is configured to extend out of the housing from the blade outlet. The tool holder is configured to slide along the length direction of the housing; The blade has a first state and a second state. In the first state, the blade edge is aligned with the length direction of the housing; in the second state, the blade edge forms an angle with the length direction of the housing. The tool holder is configured such that: when the tool holder moves to the posture switching position, at least a portion of the tool holder rotates relative to the housing, so that the blade switches between the first state and the second state.

2. The tool according to claim 1, wherein The housing includes a first housing and a second housing that are opposite to each other, and the tool holder is arranged between the first housing and the second housing.

3. The tool according to claim 2, wherein: The first housing includes a first slideway extending along a length direction thereof, and the tool holder is configured to slide along the first slideway.

4. The tool according to claim 3, wherein The tool further includes a first push button connected to the tool holder, and the first push button is configured to drive the tool holder to slide when subjected to an external force.

5. The tool according to claim 4, characterized in that The housing includes a slide groove extending along a length direction, one end of the first push button passes through the slide groove and protrudes outside the housing, and the first push button is configured to slide along the slide groove.

6. The tool according to claim 5, characterized in that A plurality of shift slots are sequentially distributed on the slide slot along its length direction, and at least a portion of the first push button can fall into the shift slots.

7. The tool according to claim 5, characterized in that The blade holder includes a first frame and a second frame, the second frame is rotatably connected to the first frame, the first frame is configured to slide along the first slideway, and the blade is mounted to the second frame.

8. The tool according to claim 7, wherein A posture switching member is provided on the end of the second shell near the blade outlet, and the posture switching member is configured to be rotatable relative to the second shell and to drive the second frame to rotate relative to the first frame, thereby switching the blade between the first state and the second state.

9. The tool according to claim 8, wherein The slide groove is located at the connection between the first shell and the second shell. The second shell includes a second slide track extending along the length direction thereof. The second frame is configured to slide along the second slide track.

10. The tool according to claim 9, wherein The second slide includes a first section of the slide and a second section of the slide, the first section of the slide is arranged on the second shell, and the second section of the slide is arranged on the posture switching component; when the posture switching component is in the initial position, the second section of the slide is connected to the first section of the slide; after the posture switching component rotates, the second section of the slide is misaligned with the first section of the slide.

11. The tool according to claim 10, wherein The tool is configured as follows: after the posture switching component is located in the initial position and the second frame slides to the second section of the slide, the posture switching component is rotated so that the second section of the slide is misaligned with the first section of the slide, and the posture switching component drives the second frame to rotate relative to the first frame through the restriction of the second section of the slide on the second frame.

12. The cutting tool according to claim 8, wherein A second push button is connected to the posture switching component, and an arc-shaped slide groove is provided on the second shell. One end of the second push button is connected to the posture switching component, and the other end of the push button passes through the arc-shaped slide groove and protrudes outside the second shell. The second push button is configured to move along the arc-shaped slide groove and drive the posture switching component to move.

13. The cutting tool according to claim 5, wherein The tool is configured such that when the tool holder moves to the posture switching position under the drive of the first push button, the first push button is rotated to drive the tool holder to rotate, so that the blade switches between the first state and the second state.

14. The tool according to claim 13, wherein The slide groove is arranged on the second shell, and the first push button includes a neck located in the slide groove, the length of the neck is greater than the width of the neck, and the width of the neck matches the width of the slide groove; a circular area is provided on the end of the slide groove close to the knife outlet, and the diameter of the circular area is at least greater than the length of the neck, and the first push button is configured so that when the first push button moves to the circular area, the tool holder is located in the posture switching position, and the first push button can rotate within the circular area, so that the first push button drives the tool holder to rotate.

15. The tool according to claim 14, wherein A protrusion that can be located in the first slide is provided on the side of the tool holder facing the first shell, and a slope area is provided on the bottom of the first slide at a position corresponding to the circular area of ​​the slide groove. When the protrusion of the tool holder moves along the slope area, the tool holder will be pushed to move toward the second shell.

16. The cutting tool according to claim 5, wherein The first slide includes a first portion of the slide that is straight and extends along the length direction of the shell, and a second portion of the slide that is arc-shaped, the second portion of the slide is connected to the first portion of the slide, and the second portion of the slide is close to the blade outlet; wherein the blade holder is configured as follows: when the blade holder slides along the second portion of the slide, it rotates relative to the first push button.

17. The cutting tool according to claim 17, wherein: The slide groove is arranged on the second shell, and the first push button includes a neck located in the slide groove, and the width of the neck matches the width of the slide groove; the first push button is configured to slide only along the length direction of the slide groove, and when the tool holder slides along the second part of the slide, the first push button rotates relative to the tool holder under the restriction of the slide groove.

18. The cutting tool according to claim 2, wherein: The blade outlet includes a first blade outlet located at the end of the shell and a second blade outlet located on the side of the shell adjacent to the first blade outlet, the second blade outlet is connected to the first blade outlet, the first blade outlet is configured to allow the blade to extend from the shell in the first state, and the second blade outlet is configured to allow the blade to extend when the blade switches to the second state; the tool also includes a support assembly, which is arranged at the second blade outlet and is configured to be rotatable relative to the shell to block the second blade outlet or release the blockage of the second blade outlet, and support the tool holder when the blade is in the second state.

19. The cutting tool according to claim 1, wherein A third housing is connected to an end of the housing opposite to the blade outlet, and the third housing is configured to store a spare blade.

20. The cutting tool according to claim 2, wherein The second housing is provided with a blocking portion, which supports the blade holder when the blade is in the second state.

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