Multi-purpose knife

Abstract

This application discloses a multi-functional knife, including a handle, a blade, and a replacement assembly. A cutting area is provided on the front side of the handle, and the inner cavity of the handle communicates with both the front end of the handle and the cutting area. The blade is detachably mounted on the front of the replacement assembly. The replacement assembly is installed in the inner cavity and is driven externally to slide the blade along the inner cavity. When the blade moves to the rear side and is located in the cutting area, it is suitable for cutting. When the blade moves to the front side and is located outside the front end of the handle, it is suitable for scraping. When the blade moves completely outside the front end of the handle, it is suitable for blade replacement. The advantages of this application are: by moving the blade along the inner cavity at different distances, the blade can perform cutting, scraping, and blade replacement functions. Compared to the single function of traditional box openers, this application achieves multi-functionality, thus making it more convenient for users in daily use.

Description

Technical Field

[0001] This application relates to the field of cutting tool technology, and in particular to a multi-functional cutting tool. Background Technology

[0002] A box opener is a tool specifically designed to cut open various cardboard boxes and packaging. Its sharpness and small size have led to its widespread use, especially with the rapid development of the logistics industry, making it increasingly popular in households. However, traditional box openers only have the function of cutting cardboard boxes. In daily household life, the use of knives is often diverse, requiring households to have multiple knives with different functions, thus increasing daily living costs and making it inconvenient to store a large number of knives. Therefore, there is a pressing need for a multi-functional knife. Summary of the Invention

[0003] One of the objectives of this application is to provide a cutting tool capable of performing multiple functions.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: a multi-functional cutting tool, including a handle, a blade, and a replacement assembly; a cutting area is provided on the front side of the handle, and the inner cavity of the handle communicates with the front end of the handle and the cutting area respectively; the blade is detachably mounted on the front part of the replacement assembly; the replacement assembly is installed in the inner cavity, and the replacement assembly drives the blade to slide along the inner cavity by a drive outside the handle; when the blade moves to the rear side and is located in the cutting area, the blade is suitable for cutting; when the blade moves to the front side and is located outside the front end of the handle, the blade is suitable for pushing and scraping; when the blade moves to be completely located outside the front end of the handle, it is suitable for replacing the blade.

[0005] Preferably, the front side of the handle is provided with an inclined mating surface; the front side of the handle is provided with a ram's horn portion, the ram's horn portion and the mating surface cooperate with each other to form the cutting area, and the opening direction of the cutting area is inclined to the extension direction of the handle.

[0006] Preferably, the angle between the opening direction of the cutting area and the extension direction of the handle is α, and the angle α is between 30° and 60°.

[0007] Preferably, the upper and / or lower ends of the mating surface are provided with chamfered surfaces, so that when the blade is cutting the workpiece, the blade is adapted to perform oblique cutting.

[0008] Preferably, when the blade is cutting, the angle between the blade and the workpiece to be cut is β, and the angle β is between 30° and 90°.

[0009] Preferably, the upper side of the blade holder is provided with a first through groove communicating with the inner cavity; the switching assembly includes an adjusting block and a support plate; the support plate is slidably installed in the inner cavity, and the blade is detachably installed in the front part of the support plate; the adjusting block is elastically installed in the support plate and extends into the first through groove; when the blade is in a specific position, the adjusting block is adapted to lock with the blade holder through a locking structure; when it is necessary to switch the position of the blade, the adjusting block is operated to release the locking structure and drive the support plate to move the blade.

[0010] Preferably, the support plate is provided with an upward-opening positioning groove; the adjusting block is slidably installed in the positioning groove; the lower end of the adjusting block and the bottom of the positioning groove are engaged by an elastic element; the locking structure is adapted to be unlocked by pressing the adjusting block.

[0011] Preferably, the locking structure includes a locking groove and a locking block; the number of locking grooves is at least two, and they are spaced apart along at least one side of the extension direction of the first through groove; the locking block is disposed on the corresponding side of the adjusting block; so that the blade is locked at a specific position by engaging the locking groove at a specific position with the locking block; the locking of the blade at the specific position is released by pressing the adjusting block to disengage the locking block from the corresponding locking groove; or, the number of locking blocks is at least two, and they are spaced apart along at least one side of the extension direction of the first through groove; the locking groove is disposed on the corresponding side of the adjusting block; so that the blade is locked at a specific position by engaging the locking groove with the locking block at a specific position; the locking of the blade at the specific position is released by pressing the adjusting block to disengage the locking groove from the corresponding locking block.

[0012] Preferably, the multi-functional cutting tool further includes a storage component, which is installed at the rear of the handle. The storage component is provided with a placement cavity that can be stored in the inner cavity, and the placement cavity is used to place a new blade. When the blade located in the replacement component is replaced, it is suitable to pull the storage component out of the inner cavity and then take out the new blade for replacement.

[0013] Preferably, the upper side of the blade handle is provided with a second through groove communicating with the inner cavity; the storage component includes a storage frame and a locking component; the locking component is elastically slidably installed in the inner cavity and extends into the second through groove; the placement cavity is disposed in the storage frame, and the storage frame is adapted to extend into the inner cavity along the opening at the rear end of the blade handle and lock with the locking component; when it is necessary to replace the blade, the locking component is pressed to release the locking of the storage frame, thereby facilitating the pulling of the storage frame out of the inner cavity.

[0014] Preferably, the locking component includes a pressing block and a locking block; the pressing block and the locking block are fixed together by a connecting part; the pressing block extends into the first through groove, and the locking block and the positioning seat provided in the inner cavity are elastically slidably engaged by an elastic element; the front end of the storage frame is provided with a fastening part; when the storage frame extends into the inner cavity, the fastening part is adapted to fasten with the front side of the locking block to lock the storage frame; when the pressing block is pressed, the locking block is adapted to move downward to disengage from the fastening part to release the locking of the storage frame.

[0015] Preferably, the front end of the fastening part is provided with an inclined first guide surface; the upper end surface of the locking block is an inclined second guide surface; when the storage frame extends into the inner cavity, the fastening part is adapted to drive the locking block to move downward by the pressing engagement of the first guide surface and the second guide surface, until the fastening part passes the front side of the locking block, at which point the locking block is adapted to engage with the fastening part by elastic reset.

[0016] Preferably, the knife handle includes a housing and anti-slip strips; the housing has slots on both the left and right sides; there are two anti-slip strips, which are adapted to slide and engage with the slots on the corresponding sides of the housing; the anti-slip strips are adapted to be limited by the storage component; or, the anti-slip strips and the slots are limited by a limiting structure.

[0017] Preferably, the limiting structure includes a limiting groove and a limiting block; the limiting groove is disposed at the rear of the slot, the limiting block is disposed on the anti-slip strip, and the anti-slip strip is adapted to be limited by the engagement of the limiting block and the limiting groove.

[0018] Compared with the prior art, the beneficial effects of this application are as follows:

[0019] (1) By changing the components, the blade can move along the inner cavity by different distances, thus enabling the cutting, pushing, and blade replacement functions of the tool. Compared with the single function of traditional box cutters, this application can achieve a variety of functions, making it more convenient for users in their daily use.

[0020] (2) The blades used by the knife are in different positions when using the cutting function and the push-shovel function, so that the blades can be fully utilized. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention in the axial direction.

[0022] Figure 2 This is a top-view schematic diagram of the overall structure of the present invention.

[0023] Figure 3 This is a schematic diagram illustrating the state of the cutting function in this invention.

[0024] Figure 4 This is a schematic diagram showing the state of cutting at different angles according to the present invention.

[0025] Figure 5 This is a schematic diagram of the disassembled state of the present invention.

[0026] Figure 6 This is a schematic diagram of the front structure of the upper shell in this invention.

[0027] Figure 7 For the present invention Figure 6 A magnified schematic diagram of part A in the middle.

[0028] Figure 8 For the present invention Figure 6 A magnified schematic diagram of part B in the middle.

[0029] Figure 9 This is a schematic diagram of the back structure of the upper shell in this invention.

[0030] Figure 10 For the present invention Figure 9 A magnified schematic diagram of point C in the middle section.

[0031] Figure 11 This is a schematic diagram of the lower shell structure in this invention.

[0032] Figure 12 This is a schematic diagram of the anti-slip strip in this invention.

[0033] Figure 13 This is a schematic diagram showing the disassembled state of the interchangeable components in this invention.

[0034] Figure 14 This is a schematic diagram of the state when the interchangeable components perform a functional change in this invention.

[0035] Figure 15 This is a schematic diagram of the structure of the present invention when it is switched to different functions.

[0036] Figure 16 This is a schematic diagram showing the disassembled state of the storage component in this invention.

[0037] Figure 17 This is a schematic diagram of the locking component in this invention.

[0038] Figure 18 This is a schematic diagram showing the state of the locking component locking the storage frame in this invention.

[0039] Figure 19This is a schematic diagram showing the state of the locking component unlocking the storage frame in this invention.

[0040] Figure 20 This is a schematic diagram showing the state of the storage frame when it extends from the handle in this invention.

[0041] In the diagram: Handle 1, Inner cavity 100, Cutting area 101, Horn part 102, Upper shell 11, First through groove 111, First locking groove 1111, Second locking groove 1112, Third locking groove 1113, Second through groove 112, Slot 113, Limiting groove 1130, First corner plate 114, Contact surface 115, Chamfered surface 116, Pressure block 117, Lower shell 12, Second corner plate 121, Positioning seat 122, Anti-slip strip 13, Engaging part 131, Limiting block 132, Adjustment Replacement component 2, support plate 21, mounting part 211, positioning rib 2111, positioning post 2112, positioning groove 212, positioning hole 2120, first spring 22, adjusting block 23, locking block 231, positioning rod 232, storage component 3, storage frame 31, placement cavity 311, fastening part 312, first guide surface 3120, locking component 32, pressing block 321, locking block 322, second guide surface 3220, second spring 33, blade 400, workpiece to be cut 500. Detailed Implementation

[0042] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0043] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0044] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0045] One preferred embodiment of this application, such as Figure 1 and Figure 20As shown, a multi-functional cutting tool includes a handle 1, a blade 400, and a changing assembly 2. A cutting area 101 is provided on the front side of the handle 1, and the inner cavity 100 of the handle 1 communicates with both the front end of the handle 1 and the cutting area 101. The blade 400 is detachably mounted on the front of the changing assembly 2; the changing assembly 2 is installed in the inner cavity 100, and the changing assembly 2, driven from outside the handle 1, causes the blade 400 to slide along the inner cavity 100. When the blade 400 moves to the rear side and is located in the cutting area 101, the blade 400 can be used for cutting. When the blade 400 moves to the front side and is located outside the front end of the handle 1, the blade 400 can be used for pushing and scraping. When the blade 400 is completely located outside the front end of the handle 1, the blade 400 can be changed.

[0046] It is understandable that when the rear side of the blade 400 is located in the cutting area 101, the combination structure of the blade 400 and the handle 1 is the same as or similar to that of a traditional box opener, thus enabling the cutting function of a traditional box opener to be achieved through the blade 400. When the front side of the blade 400 is located outside the front end of the handle 1, the combination structure of the blade 400 and the handle 1 is the same as or similar to that of a traditional spatula, thus enabling the pushing and scraping function of a traditional spatula to be achieved through the blade 400. When the blade 400 is completely moved outside the front end of the handle 1, due to the detachable connection between the blade 400 and the replacement assembly 2, the blade 400 can be removed to replace it with a new blade 400. Therefore, compared to the single function of a traditional box opener, this application can achieve a diversification of knife functions, thus making it more convenient for users' daily use.

[0047] In this embodiment, as Figures 1 to 3 As shown, the cutting area 101 can be located on one side of the front part of the tool holder 1, or on both sides of the front part of the tool holder 1. The specific number of cutting areas 101 can be selected according to actual needs. In order to improve the utilization rate of the tool and the symmetrical aesthetics of the appearance, in this embodiment, the cutting area 101 is preferably located on both sides of the front part of the tool holder 1.

[0048] Understandably, when the tool is used for cutting, the blade 400 cuts through the cutting area 101 at both rear ends; when the tool is used for scraping, the blade 400 scrapes through the front. Compared to the traditional single-sided use of the blade 400, this effectively improves the utilization rate of the blade 400. Of course, if the cutting or scraping function is used more frequently, resulting in severe wear on one side of the blade 400, the blade 400 can be reversed for continued use to further improve its utilization rate.

[0049] In this embodiment, as Figures 1 to 3 as well as Figures 6 to 9As shown, the front side of the handle 1 has an inclined mating surface 115. The front side of the handle 1 also has a ram's horn portion 102. The ram's horn portion 102 and the mating surface 115 can cooperate to form a cutting area 101, and the opening direction of the cutting area 101 is inclined to the extending direction of the handle 1. Let α be the angle between the opening direction of the cutting area 101 and the extending direction of the handle 1; then the angle α can be between 30° and 60°.

[0050] It should be known that, as Figure 3 As shown, when the cutting tool is used, the grip of the handle 1 by the hand creates an angular gap between the handle 1 and the workpiece 500 to be cut; this angular gap is the aforementioned angle α. To prevent contact between the fingers and the workpiece 500 during cutting, the angle α should be at least 30°; however, an excessively large angle α is also inconvenient for operating the handle 1, so the maximum value of the angle α is generally 60°-70°, preferably 60°.

[0051] Specifically, such as Figures 6 to 9 as well as Figure 11 As shown, the handle 1 includes an upper housing 11 and a lower housing 12. Both the front sides of the upper housing 11 and the lower housing 12 are provided with mating surfaces 115; thus, when the upper housing 11 and the lower housing 12 are combined, the mating surfaces 115 on corresponding sides of the upper housing 11 and the lower housing 12 are aligned with each other. Simultaneously, both front sides of the upper housing 11 are provided with first corner plates 114 spaced apart from the mating surfaces 115, and both front sides of the lower housing 12 are provided with second corner plates 121 spaced apart from the mating surfaces 115; thus, when the upper housing 11 and the lower housing 12 are combined, the first corner plates 114 and the second corner plates 121 on corresponding sides can be combined to form a ram's horn portion 102.

[0052] It should be understood that the ram's horn portion 102 has a sharp point so that when cutting the workpiece 500, the blade can pierce the workpiece 500 through the sharp point of the ram's horn portion 102. Subsequently, during the cutting process of the blade 400, the ram's horn portion 102 can position the workpiece 500 to prevent it from detaching from the blade during the cutting process.

[0053] In this embodiment, as Figure 4 , Figure 7 and Figure 11 As shown, the upper and / or lower ends of the mating surface 115 are provided with chamfered surfaces 116, which are inclined so that when the blade 400 cuts the workpiece 500, the blade 400 can perform inclined cutting. When the blade 400 cuts, the included angle between the blade 400 and the workpiece 500 can be set as β, and the included angle β can be 30°-90°.

[0054] It is understandable that, such as Figure 3 As shown, since the contact surface 115 is a plane, it generally remains parallel to the workpiece 500 during cutting, resulting in a straight cut. This reduces resistance and ensures smooth cutting. However, in actual use, to adapt to user habits and address more application scenarios, the tool often needs to perform angled cuts. Therefore, as... Figure 4 As shown, in order to ensure that the tool can perform oblique cuts, the ends of the mating surfaces 115 on both sides of the front of the upper housing 11 and / or the lower housing 12 can be set as inclined chamfered surfaces 116. The angle between the chamfered surface 116 and the mating surface 115 is 90°-β; when the angle β is 90°, the tool can only perform straight cuts.

[0055] It should be noted that the item to be cut 500 can be common cardboard or other items that need to be cut in daily life.

[0056] In this embodiment, as Figure 5 , Figure 6 , Figure 8 , Figure 11 and Figure 12 As shown, the knife handle 1 includes a housing and flexible anti-slip strips 13. The housing has slots 113 on both the left and right sides; there are two anti-slip strips 13, which can slide and engage with the corresponding slots 113 on the housing. This improves grip comfort and enhances the anti-slip performance of the handle 1 when holding it. A limiting structure can be used to limit the anti-slip strips 13 from the slots 113 to prevent them from detaching from the housing due to excessive force during cutting or pushing.

[0057] Specifically, such as Figure 5 , Figure 6 , Figure 8 , Figure 11 and Figure 12 As shown, the housing includes an upper housing 11 and a lower housing 12; slots 113 are provided on both sides of the upper end face of the upper housing 11 and on both sides of the lower end face of the lower housing 12. Thus, when the upper housing 11 and the lower housing 12 are combined, the slots 113 on corresponding sides of the upper housing 11 and the lower housing 12 can be symmetrical. The anti-slip strip 13 has a cross-section in the shape of a "U", and vertically extending engaging portions 131 are provided on both sides of the anti-slip strip 13; thus, when the anti-slip strip 13 is installed on the housing, the anti-slip strip 13 can cover both sides of the upper housing 11 and the lower housing 12, and the anti-slip strip 13 can slide and engage with the symmetrically arranged slots 113 on both sides of the housing through the engaging portions 131.

[0058] In this embodiment, as Figure 8 , Figure 11 and Figure 12 As shown, the limiting structure includes a limiting groove 1130 and a limiting block 132; the limiting groove 1130 is disposed at the rear of the slot 113, and the limiting block 132 is disposed at the corresponding rear of the engaging part 131. Thus, during the installation of the anti-slip strip 13 on both sides of the housing, the anti-slip strip 13 can be limited by engaging the limiting block 132 with the limiting groove 1130.

[0059] Understandably, the specific number of limit slots 1130 and limit blocks 132 can be set according to actual needs, such as 8 and 132. Figure 12 As shown, there are two limiting slots 1130, so there are two corresponding limiting blocks 132.

[0060] For ease of understanding, the specific installation process of the anti-slip strip 13 is as follows: First, the upper housing 11 and the lower housing 12 are assembled and fixed together with fasteners to form a complete housing. The housing then has a pair of symmetrical slots 113 on both the left and right sides. Next, the front end of one anti-slip strip 13 is aligned with one of the rear ends of the housing. Then, the anti-slip strip 13 is pushed along the corresponding slot 113 of the housing through the engaging part 131 until the front end of the anti-slip strip 13 abuts against the front end of the slot 113. At this point, the limiting block 132 at the rear of the engaging part 131 engages with the limiting groove 1130 at the rear of the slot 113. The above process is then repeated to install the other anti-slip strip 13 on the other side of the housing.

[0061] One embodiment of this application, such as Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figures 13 to 15 As shown, the upper side of the tool holder 1 is provided with a first through groove 111 communicating with the inner cavity 100. The changing assembly 2 includes an adjusting block 23 and a support plate 21; the support plate 21 is slidably installed in the inner cavity 100, and the blade 400 is detachably installed in the mounting part 211 at the front of the support plate 21; the adjusting block 23 is elastically installed in the support plate 21 and extends into the first through groove 111. When the blade 400 is in a specific position, the adjusting block 23 can be locked with the tool holder 1 through a locking structure. When it is necessary to change the position of the blade 400, the locking structure can be released by operating the adjusting block 23, and the support plate 21 can be driven to move the blade 400.

[0062] It is understandable that the specific positions of the blade 400 are the positions corresponding to the cutting function, the pushing function, and the replacement of the blade 400.

[0063] In this embodiment, as Figure 13 and Figure 14As shown, the support plate 21 is provided with an upward-opening positioning groove 212; the adjusting block 23 can be slidably installed in the positioning groove 212. Furthermore, the lower end of the adjusting block 23 and the bottom of the positioning groove 212 are engaged by an elastic element, and the locking structure can be unlocked by pressing the adjusting block 23 downward to drive it to slide along the positioning groove 212.

[0064] It is understood that the specific structure of the elastic element is well known to those skilled in the art, and common elastic elements can be springs or elastic sheets, etc.

[0065] It is also understandable that, in designing the positioning groove 212, to ensure the smooth sliding of the adjusting block 23, the size of the positioning groove 212 needs to be slightly larger than the size of the adjusting block 23, which results in a certain amount of wobbling space for the adjusting block 23 after it is installed in the positioning groove 212. Furthermore, when the upper side of the tool is facing downwards, the adjusting block 23 may fall out of the first through groove 111.

[0066] To ensure the installation stability of the adjusting block 23, such as Figure 13 and Figure 14 As shown, the support plate 21 has a through positioning hole 2120 at the bottom of the positioning groove 212, and the lower end of the adjusting block 23 has a positioning rod 232. The size of the end of the positioning rod 232 in its normal state is larger than the size of the positioning hole 2120, and the end of the positioning rod 232 is retractable; therefore, during the installation of the adjusting block 23, the end of the positioning rod 232 can be retracted to pass through the positioning hole 2120. This allows the adjusting block 23 to slide along the positioning hole 2120 via the positioning rod 232 during the pressing process.

[0067] It is understandable that when the lower part of the adjusting block 23 is provided with the positioning rod 232, in order to facilitate the setting of the elastic element between the bottom of the adjusting block 23 and the positioning groove 212, the elastic element is preferably a spring, which can be marked as the first spring 22. The first spring 22 can be sleeved on the positioning rod 232.

[0068] In this embodiment, as Figure 6 As shown, a first through groove 111 is provided on the upper housing 11; the extending direction of the first through groove 111 is parallel to the length direction of the tool holder 1. Thus, the adjusting block 23 can drive the support plate 21 to move the blade 400 to a specific position by sliding along the extending direction of the first through groove 111. Furthermore, in order to facilitate the locking structure to lock the blade 400, the locking structure can be provided on the side of the first through groove 111 along the extending direction.

[0069] Specifically, the locking structure includes a locking groove and a locking block 231; the locking groove and locking block 231 can be configured in various ways, including but not limited to the following two:

[0070] Setting method 1: As shown in the example Figure 9 , Figure 10 , Figure 13 and Figure 14 As shown, there are at least two locking grooves, which are spaced apart on at least one side along the extension direction of the first through groove 111; the locking block 231 is disposed on the corresponding side of the adjusting block 23; so that the blade 400 is locked in a specific position by engaging the locking block 231 with the locking groove at a specific position; by pressing the adjusting block 23 to disengage the locking block 231 from the corresponding locking groove, the locking of the blade 400 in the specific position is released.

[0071] Setting method 2: The number of locking blocks 231 is at least two, and they are spaced apart on at least one side along the extension direction of the first through groove 111; the locking groove is set on the corresponding side of the adjusting block 23; so that the blade 400 is locked in a specific position by engaging the locking groove with the locking block 231 at a specific position; by pressing the adjusting block 23, the locking groove is disengaged from the corresponding locking block 231, thereby releasing the locking of the blade 400 in the specific position.

[0072] Understandably, for the sake of convenience in the following description, the specific setting method of the locking slot and the card block 231 will be based on the setting method one described above.

[0073] It is also understood that the cutting tool in this embodiment includes at least three functions, such as cutting, pushing, and changing the blade 400. Among them, when cutting and pushing, the blade 400 needs to be locked because it needs to be subjected to force; therefore, there are at least two locking grooves to ensure that the blade 400 is locked by engaging with the corresponding locking groove and the locking block 231 when cutting and pushing.

[0074] Of course, to ensure that the cutting tool 400 can be replaced at any angle, a locking structure can be used to lock the tool during replacement. Specifically, there must be at least three locking slots, spaced apart from each other.

[0075] Of course, in order to further improve the structural stability of the adjusting block 23 when it is locked, the number of locking grooves can be at least three pairs, with two locking grooves in each pair symmetrically arranged on both sides of the extension direction of the first through groove 111; then, the adjusting block 231 is provided on both sides of the adjusting block 23.

[0076] In this embodiment, as Figure 9 , Figure 13 and Figure 14As shown, the upper surface of the adjusting block 23 is provided with a first mark corresponding to the position of the locking block 231; the upper surface of the upper housing 11 is provided with a second mark corresponding to the position of the locking groove on the side of the first through groove 111. Thus, when changing the position of the blade 400, the user can determine the engagement position of the locking block 231 with the corresponding locking groove according to the positions of the first and second marks, thereby facilitating user operation.

[0077] To improve the applicability of the blade 400 in this application, the blade 400 adopts a product already available on the market. For example, as shown in Figure 5, a first positioning hole is provided in the center of the blade 400, and at least one second positioning hole is provided on both sides of the first positioning hole. Then, as... Figure 13 As shown, the mounting part 211 includes positioning ribs 2111 and at least one pair of positioning posts 2112. The positioning ribs 2111 are located at the center of the front end of the support plate 21, and the positioning posts 2112 are symmetrically arranged on both sides of the positioning ribs 2111. Thus, when the blade 400 is mounted on the mounting part 211, the blade 400 can engage with the positioning ribs 2111 through the first positioning hole, and with the corresponding positioning post 2112 through the second positioning hole. This multi-point positioning of the blade 400 ensures that the blade 400 does not wobble during use.

[0078] Specifically, the height of the positioning rib 2111 and the positioning post 2112 should be greater than the thickness of the blade 400 to ensure that there is a height misalignment between the blade 400 and the positioning rib 2111 and the positioning post 2112 after installation, thereby ensuring that the blade 400 does not detach or fall off during use.

[0079] Understandably, because the height of the positioning ribs 2111 and the positioning posts 2112 is greater than the thickness of the blade 400, a gap will be created between the blade 400 and the installation space after the blade 400 is installed. To prevent the blade 400 from wobbling up and down along the gap during use, a restraining structure can be used to restrict the blade 400. There are various specific structures for the restraining structure, among which the commonly used ones are elastic restraining structures and magnetic restraining structures.

[0080] Specifically, the elastic limiting structure includes an elastic element installed between the inner sides of the blade 400 and the upper housing 11. After the blade 400 is installed, the elastic element can press the blade 400 with its elastic force to prevent it from shaking. Commonly used elastic elements include springs and sheet springs.

[0081] The magnetic confinement structure includes a magnet, which can be fixedly installed in the mounting part 211. After the blade 400 is installed in the mounting part 21, the magnet can attract the blade 400, thereby preventing the blade 400 from shaking. Alternatively, the magnet can also be fixedly installed inside the lower housing 12.

[0082] For ease of understanding, the specific working process of the replacement component 2 can be described in detail below; among them, the locking grooves are, in order from back to front, the first locking groove 1111, the second locking groove 1112 and the third locking groove 1113.

[0083] (1) When the tool is performing the cutting function, such as Figures 1 to 4 as well as Figure 14 As shown in (1). At this time, the adjusting block 23 engages with the first locking groove 1111 via the locking block 231, so that the blade 400 on the mounting part 211 located at the front of the support plate 21 is located in the cutting area 101 from the rear. Then, the user can operate the blade 400 in the cutting area 101 to cut the workpiece by holding the handle 1.

[0084] (2) When the cutter performs the push-shovel function, such as Figure 14 Zhong (2) and Figure 15 As shown in (1). Press the adjusting block 23 to drive it to slide downward along the positioning groove 212 and compress the first spring 22 until the locking block 231 on the side of the adjusting block 23 disengages from the first locking groove 1111. Then, maintain the pressing posture of the adjusting block 23 and push it forward along the first through groove 111 until the locking block 231 on the side of the adjusting block 23 aligns with the second locking groove 1112. Release the adjusting block 23, and the adjusting block 23 can then slide upward along the positioning groove 212 under the elastic force of the first spring 22 until the locking block 231 on the side of the adjusting block 23 engages with the second locking groove 1112. Furthermore, during the movement of the adjusting block 23, the abutment between the adjusting block 23 and the side of the positioning groove 212 drives the support plate 21 to move the blade 400 forward until the front side of the blade 400 extends beyond the front end of the handle 1. The user can then operate the blade 400 to push and scrape walls, floors, or tabletops by holding the handle 1.

[0085] (3) When the cutting tool is changing the insert 400, if Figure 15As shown in (2). Press the adjusting block 23 to drive it to slide downward along the positioning groove 212 and compress the first spring 22 until the locking block 231 on the side of the adjusting block 23 disengages from the second locking groove 1112. Then, maintain the pressing posture of the adjusting block 23 and push it forward along the first through groove 111 until the locking block 231 on the side of the adjusting block 23 aligns with the third locking groove 1113. Release the adjusting block 23, and then the adjusting block 23 can slide upward along the positioning groove 212 under the elastic force of the first spring 22 until the locking block 231 on the side of the adjusting block 23 engages with the third locking groove 1113. Furthermore, during the movement of the adjusting block 23, the abutment between the adjusting block 23 and the side of the positioning groove 212 drives the support plate 21 to move the blade 400 forward until the blade 400 is fully extended outside the front end of the handle 1. The user can then reverse the direction of the blade 400 or replace it with a new blade 400 to achieve the replacement function.

[0086] One embodiment of this application, such as Figure 1 ,to Figure 3 , Figure 5 , Figures 16 to 20 As shown. The multi-functional cutting tool also includes a storage component 3, which is installed at the rear of the handle 1. The storage component 3 has a placement cavity 311 that can be stored in the inner cavity 100. The placement cavity 311 is used to place new blades 400. Thus, when the blade 400 located in the replacement component 2 needs to be replaced with a new blade 400, the storage component 3 can be directly pulled out of the inner cavity 100, and then the new blade 400 can be taken out from the placement cavity 311 for replacement. This can effectively improve the replacement efficiency of the blade 400 and achieve the best user experience.

[0087] In this embodiment, as Figure 6 , Figure 9 and Figures 16 to 20 As shown, a second through groove 112 communicating with the inner cavity 100 is provided on the upper side of the tool holder 1. The storage component 3 includes a storage frame 31 and a locking component 32; the locking component 32 can be elastically slidably installed in the inner cavity 100 and extends into the second through groove 112; the placement cavity 311 is provided in the storage frame 31, and the storage frame 31 can extend into the inner cavity 100 along the opening at the rear end of the tool holder 1 and be locked with the locking component 32. When it is necessary to replace the blade 400, the locking component 32 can be pressed to release the lock on the storage frame 31, and then the storage frame 31 can be pulled directly out of the inner cavity 100.

[0088] Specifically, such as Figure 6 , Figure 9 and Figures 16 to 20As shown, a second through groove 112 is disposed on the upper housing 11; a positioning seat 122 aligned with the second through groove 112 is disposed on the inner side of the lower housing 12. The locking component 32 is slidably mounted on the positioning seat 122 to ensure that the locking component 32 can only slide up and down along the opening direction of the second through groove 112. The locking block 322 and the positioning seat 122 are also connected by an elastic element; common elastic elements include elastic sheets and springs, etc. For the convenience of subsequent description, the elastic element in this embodiment is preferably a spring, which can be labeled as the second spring 33.

[0089] In this embodiment, as Figures 16 to 19 As shown, the locking component 32 includes a pressing block 321 and a locking block 322; the pressing block 321 and the locking block 322 are fixed at intervals by a connecting part; wherein, the pressing block 321 can extend into the first through groove 111, and the locking block 322 can elastically slide with the positioning seat 122 through the second spring 33. The front end of the storage frame 31 is provided with a fastening part 312; when the storage frame 31 extends into the inner cavity 100, the fastening part 312 can be fastened with the front side of the locking block 322 to lock the storage frame 31; when the pressing block 321 is pressed, the locking block 322 can move down along the positioning seat 122 to disengage from the fastening part 312, thereby releasing the lock on the storage frame 31, so that the user can directly pull the storage frame 31 out of the inner cavity 100.

[0090] Understandably, the storage frame 31 can be unlocked by pressing down on the pressing block 321. When the storage frame 31 is being stored in the inner cavity 100, the storage frame 31 and the locking component 32 can be engaged by pressing down on the pressing block 321 again, or by locking through the automatic locking structure.

[0091] Specifically, such as Figures 17 to 19 As shown, the front end of the fastening part 312 is provided with an inclined first guide surface 3120; the upper end surface of the locking block 322 is an inclined second guide surface 3220. When the storage frame 31 extends into the inner cavity 100, the fastening part 312 can be pressed and engaged with the second guide surface 3220 of the locking block 322 through the first guide surface 3120, thereby driving the locking block 322 to move down along the positioning seat 122 and compress the second spring 33 until the fastening part 312 passes the front side of the locking block 322, at which point the locking block 322 can automatically fasten with the fastening part 312 through the elastic reset of the second spring 33.

[0092] In this embodiment, as Figure 9As shown, a pressure block 117 is provided on the inner side of the upper housing 11, and the pressure block 117 corresponds to the position of the placement cavity 311. Thus, when the storage frame 31 houses the placement cavity 311 into the inner cavity 100, the pressure block 117 can extend into the placement cavity 311, thereby limiting the placement of the new blade 400 placed in the placement cavity 311.

[0093] It is understandable that multiple new blades 400 can be placed in the placement cavity 311, thus the depth of the placement cavity 311 is much greater than the thickness of a single blade 400. Furthermore, during use, the blade 400 may detach from the placement cavity 311 due to movement within it. By providing a pressure block 117 on the inner side of the upper housing 11, when the storage frame 31 is retracted into the inner cavity 100, the end of the pressure block 117 is flush with or slightly extends into the placement cavity 311, thereby limiting the vertical movement of the blades 400 placed in the placement cavity 311 and preventing the blades 400 from scattering within the inner cavity 100.

[0094] In this embodiment, as Figures 1 to 3 As shown, since the storage frame 31 and the locking component 32 can be locked together, that is, the storage frame 31 has sufficient limiting force when locked, the anti-slip strip 13 does not need to be provided with the above-mentioned limiting structure when it is installed, and the storage frame 31 can directly limit the installed anti-slip strip 13.

[0095] To facilitate understanding, the specific usage process of storage component 3 will be described in detail below.

[0096] (1) When the storage box 31 is stored in the inner cavity 100 of the handle 1, as Figure 1 , Figure 2 and Figure 18 As shown, the storage frame 31 can be engaged with the front side of the locking block 322 of the locking member 32 via the front fastening part 312, thereby restricting the degree of freedom of movement of the storage frame 31 in the front-back direction of the handle 1. This ensures that the storage frame 31 can accommodate multiple new blades 400 into the inner cavity 100.

[0097] (2) When the cutting tool needs to be replaced with a new blade, such as Figure 19 and Figure 20 As shown, pressing the pressing block 321 downwards along the second through groove 112 causes the locking block 322 to move downwards along the positioning seat 122 and compress the second spring 33 until the locking block 322 and the latching part 312 of the storage frame 31 disengage. Subsequently, the user can directly pull the storage frame 31 out of the inner cavity and take out a new blade 400 placed in the placement cavity 311.

[0098] (3) After the new blade 400 is removed, as Figure 18 and Figure 19 As shown, the storage frame 31 can be reinserted into the inner cavity 100. During the insertion of the storage frame 31, the first guide surface 3120 at the front end of the storage frame 31 and the second guide surface 3220 on the upper end of the locking block 322 are pressed together, causing the locking block 322 to move downward along the positioning seat 122 and compress the second spring 33. When the fastening part 312 of the storage frame 31 passes the locking block 322, the locking block 322 can be lifted by the elastic force of the second spring 33, so that the locking block 322 is fastened to the fastening part 312 from the front.

[0099] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A multi-functional cutting tool, characterized in that, include: blade; The knife handle has a cutting area on its front side, and its inner cavity is connected to both the front end of the knife handle and the cutting area. A first through groove is provided on the upper side of the knife handle, which connects to the inner cavity. as well as The replacement assembly includes a support plate and an adjusting block; the support plate is slidably installed in the inner cavity, and the blade is detachably installed at the front of the support plate; the adjusting block is elastically installed on the support plate and extends into the first through groove. The switching assembly drives the blade to slide along the inner cavity via a drive located outside the handle. When the blade moves to the rear side and is located in the cutting area, the blade is adapted to make a cut; When the blade is moved to the front side outside the front end of the handle, the blade is adapted to perform a pushing action; When the blade is moved to a position completely outside the front end of the handle, it is suitable for replacement; When the blade is in a specific position, the adjusting block is adapted to be locked to the handle via a locking structure; When it is necessary to change the position of the blade, the adjusting block is operated to release the locking structure and drive the support plate to move the blade.

2. The multi-functional cutting tool as described in claim 1, characterized in that: The front side of the handle is provided with an inclined mating surface; the front side of the handle is provided with a ram's horn portion, the ram's horn portion and the mating surface cooperate with each other to form the cutting area, and the opening direction of the cutting area is inclined to the extension direction of the handle.

3. The multi-functional cutting tool as described in claim 2, characterized in that: The upper and / or lower ends of the bonding surface are provided with chamfered surfaces so that when the blade is cutting the workpiece, the blade is adapted to make oblique cuts.

4. The multi-functional cutting tool as described in claim 1, characterized in that: The locking structure includes: A locking block, wherein the locking block is disposed on the side of the adjusting block; and At least two locking grooves are provided at intervals along the side of the first through groove extending in the direction of extension; The blade is locked in a specific position by engaging the locking block with the locking groove at a specific location; the blade is released from the specific position by pressing the adjusting block to disengage the locking block from the corresponding locking groove.

5. The multi-functional cutting tool as described in any one of claims 1-4, characterized in that: The multi-functional cutting tool also includes a storage component, which is installed at the rear of the handle. The storage component has a placement cavity that can be stored in the inner cavity. The placement cavity is used to place a new blade. The blade in the placement cavity is used to replace the blade located in the replacement component.

6. The multi-functional cutting tool as described in claim 5, characterized in that: The storage component includes: A locking member, wherein the locking member is elastically slidably mounted in the inner cavity and extends to the outside of the tool holder; and A storage frame, wherein the placement cavity is disposed in the storage frame; the storage frame is adapted to extend into the inner cavity through an opening at the rear end of the tool holder and to be locked with the locking component; When the blade needs to be replaced, press the locking component to release the lock on the storage frame.

7. The multi-functional cutting tool as described in claim 6, characterized in that: The front end of the storage frame is provided with a fastening part; the locking component includes: Pressing block, the pressing block being adapted to extend outside the handle; and A locking block is fixedly spaced from the pressing block; the locking block and the inner cavity are elastically slidably engaged by an elastic element. When the storage frame extends into the inner cavity, the fastening part is adapted to fasten with the front side of the locking block; When the pressing block is pressed, the locking block is adapted to disengage from the fastening portion by moving downward.

8. The multi-functional cutting tool as described in claim 7, characterized in that: The front end of the fastening part is provided with an inclined first guide surface; the upper end surface of the locking block is an inclined second guide surface; when the storage frame extends into the inner cavity, the fastening part is adapted to drive the locking block to move down by the pressing cooperation of the first guide surface and the second guide surface until the fastening part passes the front side of the locking block, at which point the locking block is adapted to engage with the fastening part by elastic reset.

9. The multi-functional cutting tool as described in claim 5, characterized in that: The handle includes a housing and anti-slip strips; the housing has slots on both the left and right sides; there are two anti-slip strips, which are adapted to slide and engage with the slots on the corresponding sides of the housing; the anti-slip strips are adapted to be limited by the storage component; or, the anti-slip strips and the slots are limited by a limiting structure.

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