utility knife

Abstract

The application provides a utility knife, which comprises a shell, a push button, a lock catch and a blade. The shell has a first opening and a second opening, which are oppositely arranged and communicated. The push button is slidingly arranged in the first opening. The lock catch is slidingly arranged in the second opening. The blade is connected to the push button and can be extended or retracted in the shell. When the blade is in the extended state, the lock catch is configured to lock the blade to prevent the blade from shaking.

Description

Technical Field

[0001] This application relates to the field of stationery, and more specifically, to a utility knife. Background Technology

[0002] A utility knife, also known as a carving knife or wallpaper knife, is a type of knife used for art and handicrafts. It is primarily used to cut soft materials and typically consists of two parts: a casing and a blade, with a pull-out design. The blade is extended and retracted by sliding a push button within an opening in the casing.

[0003] In existing utility knives, when the blade is extended by pushing the button, it tends to wobble to some extent, and the longer the blade extends, the more pronounced the wobble becomes. This blade wobble prevents accurate cutting and may cause the blade to slip off the object, resulting in personal injury. Currently, there is a lack of utility knives that can stably fix the blade after it extends, preventing significant wobble, ensuring accurate cutting, reducing the risk of blade slippage and personal injury, and possessing a simple structure. Utility Model Content

[0004] The main purpose of this application is to overcome at least one of the defects of the prior art and to provide a utility knife that can stably fix the blade after it is extended, avoid significant blade shaking, ensure accurate cutting, reduce personal injury caused by blade slippage, and has a simple structure.

[0005] To achieve the above objectives, this application adopts the following technical solution: According to one aspect of this application, a utility knife is provided, comprising a housing, a push button, a latch, and a blade. The housing has a first opening and a second opening, the first opening and the second opening being opposite to and communicating with each other. The push button is slidably disposed in the first opening; the latch is slidably disposed in the second opening. The blade is connected to the push button and is capable of extending or retracting from the housing; when the blade is in the extended state, the latch is configured to lock the blade to prevent the blade from wobbling.

[0006] According to one embodiment of this application, the housing is provided with a guide rail, and the latch is slidable along the guide rail. The sliding direction of the latch is the same as the extension or retraction direction of the blade.

[0007] According to one embodiment of this application, the latch includes a body and a clamping block. The body is configured to slide within the second opening. The clamping block is disposed on the body and configured to clamp the blade to achieve a latching action on the blade.

[0008] According to one embodiment of this application, the guide rail includes a first slot and a second slot, and the latch includes a locking block disposed on the body. The locking block is configured to slide between the first slot and the second slot of the guide rail. When the locking block is located in the first slot, the clamping block clamps the blade, and when the locking block is located in the second slot, the clamping block releases the blade.

[0009] According to one embodiment of this application, the surface of the card block that contacts the guide rail is curved.

[0010] According to one embodiment of this application, the direction perpendicular to the surface of the housing where the second opening is located is defined as the depth direction, and the maximum value of the depth of the first slot is greater than the maximum value of the depth of the second slot.

[0011] According to one embodiment of this application, the latch further includes a connecting buckle for connecting the latch to the housing, the housing being provided with a connecting step, and the connecting buckle and the connecting step being clearance-fitted to connect the latch and the housing.

[0012] According to one embodiment of this application, the connecting buckle is an L-shaped buckle, and / or the connecting buckle is elastic, and / or the connecting buckle is slidable relative to the connecting step.

[0013] According to one embodiment of this application, the push button includes a positioning post, the blade has a positioning hole, and the positioning post and the positioning hole connect the push button and the blade.

[0014] According to one embodiment of this application, the housing includes an outer shell and a sheath, the outer shell having a through groove, the sheath being disposed in the through groove, a first opening being disposed in the sheath, and the blade being movable within the sheath; the sheath protrudes from the outer shell along the direction in which the blade extends out of the housing.

[0015] As can be seen from the above technical solution, the advantages and positive effects of the utility knife proposed in this application are as follows: The utility knife proposed in this application is equipped with a locking mechanism. The locking mechanism can stably lock and fix the blade when it is in the extended state, preventing the blade from shaking significantly, ensuring accurate cutting, and greatly reducing the risk of personal injury caused by blade slippage.

[0016] The utility knife proposed in this application has a first opening and a second opening in the shell, and the first opening and the second opening are arranged opposite to each other and connected. The push button is slidably disposed in the first opening, and the lock is slidably disposed in the second opening. It can realize that after the push button pushes the blade out, the lock can fix the blade. The entire utility knife has a simple structure and is easy to process and assemble. Attached Figure Description

[0017] The various objectives, features, and advantages of this application will become more apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. The drawings are merely illustrative illustrations of this application and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts. Wherein: Figure 1 This is a structural diagram of the utility knife in this application.

[0018] Figure 2 yes Figure 1 Rear view.

[0019] Figure 3 yes Figure 2 A schematic diagram of the structure cut along section AA.

[0020] Figure 4 yes Figure 2 A schematic diagram of the section cut along AA (with the locking mechanism securing the blade).

[0021] Figure 5 yes Figure 2 A schematic diagram of the structure of the shell portion with a second opening.

[0022] Figure 6 This is a schematic diagram of the locking mechanism of this application.

[0023] Figure 7 yes Figure 5 BB-direction sectional view.

[0024] Figure 8 This is a schematic diagram of the shell structure of this application.

[0025] Figure 9 yes Figure 8 A schematic diagram of the inner shell structure.

[0026] Figure 10 yes Figure 8 A schematic diagram of the structure of the scabbard.

[0027] The annotations in the attached figures are explained as follows: 1-Utility knife 10 - Shell; 11-Outer shell; 12-Sheath; 20-Push button; 30-Lock; 40-blade; 50-tail cap; 101 - First opening; 102 - Second opening; 103 - Guide rail; 1031 - First card slot; 1032 - Second card slot; 104 - Connecting steps; 1041 - First Step; 1042 - Second Step; 105 - Limit plate; 110 - Through slot; 212-Hand-operated part; 213 - Push button body; 214 - Positioning Post; 301-Main Body; 302 - Clamping block; 303 - Card Block; 304-Connecting buckle; 3014 - First Deck; 3042 - Second Deck; 305 - Limit Block; 306 - Hand-push structure; 307 - Reinforcing rib; 401 - Positioning hole; D - Depth direction; H1 - The maximum depth of the first card slot; H2 - The maximum depth of the second slot. Detailed Implementation

[0028] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this application will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0029] In the following description of various exemplary embodiments of this application, reference is made to the accompanying drawings, which form part of this application, and which illustrate by way of example different exemplary structures, systems, and steps that can implement various aspects of this application. It should be understood that other specific solutions to components, structures, exemplary devices, systems, and steps may be used, and structural and functional modifications may be made without departing from the scope of this application. Furthermore, while the terms “above,” “between,” “within,” etc., may be used in this specification to describe different exemplary features and elements of this application, these terms are used herein only for convenience, such as the orientation according to the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of this application.

[0030] It is understood that the terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0031] As used herein, “about,” “approximately,” “essentially,” or “substantially” includes the value and the average value within an acceptable range of deviations from a particular value as determined by one of ordinary skill in the art, taking into account the measurement under discussion and a particular number of errors associated with the measurement (i.e., limitations of the measurement system). For example, “about” may mean within one or more standard deviations of the value, or, for example, within ±30%, ±20%, ±15%, ±10%, ±5%. Furthermore, the use of “about,” “approximately,” “essentially,” or “substantially” herein may be chosen to select a more acceptable range of deviations or standard deviations depending on the nature of the measurement, the cutting nature, or other properties, and may not require a single standard deviation to apply to all properties.

[0032] Furthermore, relative terms such as “down” or “bottom” and “up” or “top” may be used herein to describe the relationship between one element and another, as illustrated in the figures. It should be understood that relative terms are intended to include different orientations of the device beyond those shown in the figures. For example, if a device in one figure is flipped, an element described as being “down” to another element will be oriented “up” to that element. Thus, the exemplary term “down” can include both “down” and “up” orientations, depending on the specific orientation of the figure. Similarly, if a device in one figure is flipped, an element described as being “below” or “under” another element will be oriented “above” that element. Thus, the exemplary terms “above” or “below” can include both “up” and “down” orientations.

[0033] This document describes exemplary embodiments with reference to cross-sectional views, which are schematic diagrams of idealized embodiments. Therefore, variations in the shape of the illustrations can be expected as a result of, for example, manufacturing techniques and / or tolerances. Consequently, the embodiments described herein should not be construed as limited to the specific shapes of the regions shown herein, but rather include, for example, shape deviations caused by manufacturing processes. For example, regions shown or described as flat may generally have rough and / or non-linear characteristics. Furthermore, the acute angles shown may be rounded. Therefore, the regions shown in the figures are schematic in nature, and their shapes are not intended to show the precise shapes of the regions, nor are they intended to limit the scope of this application.

[0034] like Figures 1 to 4As shown, the utility knife 1 of this application includes a housing 10, a push button 20, a latch 30, a blade 40, and a tail cap 50. The housing 10 has a first opening 101 and a second opening 102, which are opposite to and communicate with each other. The push button 20 is slidably disposed in the first opening 101; the push button 20 can slide in the first opening 101 and drive the blade 40 to move. The latch 30 is slidably disposed in the second opening 102. The blade 40 is connected to the push button 20 and can extend from one end of the housing 10 or retract into the housing 10; when the blade 40 is in the extended state, the latch 30 is configured to lock the blade 40 to prevent the blade 40 from shaking. The tail cap 50 is disposed in the housing 10 and located at the other end of the housing 10.

[0035] The utility knife 1 of this application has a first opening 101 and a second opening 102 in the shell 10, which are opposite to and connected to each other. A push button 20 is slidably disposed in the first opening 101, and a latch 30 is slidably disposed in the second opening 102. This allows the latch 30 to fix the blade 40 after the push button 20 pushes it out, and the entire utility knife 1 has a simple structure. The latch 30 can stably lock and fix the blade 40 when it is in the extended state, preventing significant shaking of the blade 40, thus ensuring accurate cutting and greatly reducing the risk of personal injury caused by the blade slipping.

[0036] The latch 30 can switch between locking the blade 40 and releasing the blade 40. The latch 30 can slide in the second opening 102 to lock and release the blade 40. When the blade 40 needs to be retracted, the latch 30 can be pushed to release the blade 40. Then, the push button 20 can be turned to retract the blade 40 into the housing 10.

[0037] In this embodiment, the push button 20 further includes a push part 212, a push button body 213, and a positioning post 214. The push part 212 extends out of the first opening 101, allowing the user to slide the push button 20 by pushing the push part 212. The surface of the push part 212 is provided with anti-slip texture. The push button body 213 connects to the push part 212 and extends into the first opening 101. The positioning post 214 is located at the end of the push button body 213 near the blade 40, and the blade 40 is connected to the push button 20 via the positioning post 214. In this embodiment, there is one positioning post 214, and the blade 40 has a positioning hole 401. The positioning post 214 connects the push button 20 to the blade 40 through the positioning hole 401. The number of positioning holes 401 can also be two, and does not need to be equal to the number of positioning posts 214. In some other embodiments, the number of positioning posts 214 can also be two. External force can be used to push the push part 212 to extend or retract the blade 40 into the housing 10.

[0038] In this embodiment, the housing 10 is provided with a guide rail 103, and the latch 30 can slide along the guide rail 103. The sliding direction of the latch 30 is the same as the extension or retraction direction of the blade 40. The guide rail 103 on the housing 10 can effectively guide the sliding of the latch 30 and ensure that the sliding of the latch 30 in the second opening 102 is in the same direction as the extension and retraction of the blade 40. This facilitates user operation and prevents the latch 30 from sliding out of the second opening 102 and causing damage to the utility knife 1.

[0039] In this embodiment, the guide rail 103 is disposed on one side of the second opening 102. In other embodiments, the guide rail 103 may be disposed on both sides of the second opening 102.

[0040] In this embodiment, see Figure 3 , Figure 4 and Figure 6 The latch 30 includes a main body 301 and a clamping block 302. The main body 301 is configured to slide within the second opening 102. The clamping block 302 is disposed on the main body 301 and configured to clamp the blade 40 to achieve a latching action on the blade 40. After the blade 40 is extended, the clamping block 302 of the latch 30 can stably fix the blade 40, preventing significant shaking of the blade 40, ensuring accurate cutting, and reducing the risk of personal injury caused by the blade 40 slipping. The sliding of the main body 301 within the second opening 102 can drive the clamping block 302 to perform clamping and releasing actions on the blade 40.

[0041] The latch 30 also includes a push mechanism 306, which is disposed on the surface of the main body 301 facing away from the pressing block 302. The user can push the latch 30 to slide by pushing the push mechanism 306. A reinforcing rib 307 is also provided between the pressing block 302 and the main body 301 to enhance the strength of the pressing block 302.

[0042] In this embodiment, see Figures 4 to 6 The guide rail 103 includes a first slot 1031 and a second slot 1032. The latch 30 includes a latching block 303 disposed on the main body 301. The latching block 303 is configured to slide between the first slot 1031 and the second slot 1032 of the guide rail 103. When the latching block 303 is located in the first slot 1031, the clamping block 302 clamps the blade 40. When the latching block 303 is located in the second slot 1032, the clamping block 302 releases the blade 40. The cooperative arrangement of the slots (1031, 1032) and the latching block 303 enables the latch 30 to clamp and release the blade 40. The structure is simple, the operation is convenient, the clamping effect on the blade 40 is good, and it does not hinder the retraction of the blade 40. This improves the ease of use and safety of the utility knife 1 and further enhances the user experience.

[0043] In this embodiment, Figure 4This shows the state when the latch 30 locks the clamping blade 40, combined with Figure 5 and Figure 6 , Figure 4 The locking block 303 of the latch 30 is located in the first slot 1031 of the guide rail 103, and the blade 40 is in a state of being pressed by the clamping block 302. When the blade 40 is finished using and needs to be retracted, the latch 30 is pushed, so that the locking block 303 of the latch 30 slides from the first slot 1031 of the guide rail 103 to the second slot 1032. At this time, the clamping block 302 releases the blade 40, and the blade 40 can be retracted into the housing 10 by the push button 20.

[0044] In this embodiment, the surface of the locking block 303 that contacts the guide rail 103 is curved. For example, it can be a circular arc surface, an elliptical arc surface, etc. The shapes of the first locking groove 1031 and the second locking groove 1032 correspond to the shapes of the surfaces in contact with the locking block 303, and can also be circular arc surfaces, elliptical arc surfaces, etc. The first locking groove 1031 and the second locking groove 1032 have the same shape, and the connecting surface between the first locking groove 1031 and the second locking groove 1032 is a smooth curved surface, which allows the locking block 303 to move between the first locking groove 1031 and the second locking groove 1032.

[0045] In this embodiment, see Figure 5 and Figure 7 Let the direction perpendicular to the surface of the housing 10 where the second opening 102 is set be defined as the depth direction D. Then, the maximum value H1 of the depth of the first slot 1031 is greater than the maximum value H2 of the depth of the second slot 1032. Since the maximum value of the depth of the first slot 1031 is greater than the maximum value of the depth of the second slot 1032, when the locking block 303 is located in the first slot 1031, the latch 30 will move closer to the blade 40 along the depth direction, thereby causing the clamping block 302 to clamp the blade 40. When the locking block 303 is located in the second slot 1032, the latch 30 will move away from the blade 40 along the depth direction, thereby causing the clamping block 302 to release the blade 40.

[0046] In this embodiment, see Figure 5 and Figure 6The latch 30 also includes a connecting buckle 304 for connecting the latch 30 to the housing 10. The housing 10 is provided with a connecting step 104, and the connecting buckle 304 and the connecting step 104 are clearance-fitted to connect the latch 30 and the housing 10. The connection step 104 and the connecting buckle 304 can limit the latch 30 to the second opening 102 of the housing 10, ensuring that the latch 30 slides in the second opening 102 of the housing 10. There is a gap between the connecting step 104 and the connecting buckle 304, which does not hinder the sliding of the latch 30 in the housing 10 and the switching movement of the latch 303 between the first slot 1031 and the second slot 1032 of the guide rail 103. In this embodiment, the connecting buckle 304 is an L-shaped buckle. The L-shaped buckle has a simple structure and a good connection effect. It can achieve the connection of the buckle 30 without hindering the sliding of the buckle 30 in the housing 10 and the switching movement of the buckle 30's locking block 303 between the first locking groove 1031 and the second locking groove 1032 of the guide rail 103.

[0047] The connecting step 104 includes a first step 1041 and a second step 1042, and the connecting buckle 304 includes a first buckle 3041 and a second buckle 3042. The first buckle 3041 engages with the first step 1041, and the second buckle 3042 engages with the second step 1042. With the blade 40 extending out of the housing 10 as the front and retracting into the housing 10 as the rear, a limiting plate 105 is provided at the rear of the second opening 102, and a limiting block 305 is provided at the corresponding position of the latch 30. The limiting plate 105 can cover the gap between the latch 30 and the housing 10. Furthermore, when the latch 30 slides in the second opening 102, the rear end of the latch 30 may deform due to the user's pressure, potentially causing the rear end of the latch 30 to contact the limiting plate 105 of the housing 10. This results in a larger contact area and increased resistance. Therefore, providing a limiting block 305 at the rear end of the latch 30 can reduce the contact area and also reduce the problem of unstable contact gaps caused by injection molding tolerances.

[0048] In this embodiment, see Figures 8 to 10 The housing 10 includes an outer shell 11 and a sheath 12. The outer shell 11 has a through groove 110, and the sheath 12 is disposed in the through groove 110. A first opening 101 is disposed in the sheath 12, allowing the blade 40 to move within the sheath 12. Along the direction in which the blade 40 extends out of the housing 10, the sheath 12 protrudes from the outer shell 11. The sheath 12 extends the support length of the housing 10 for the blade 40, further enabling stable locking and fixation of the blade 40 when it is in the extended state, preventing significant shaking of the blade 40, ensuring accurate cutting, and reducing the risk of the blade 40 slipping out.

[0049] The utility knife 1 of this application also has a second embodiment, wherein the utility knife 1 of the second embodiment is... Figures 1 to 10Compared to the utility knife 1 of the second embodiment, it has a substantially the same structure in its basic construction. Therefore, in the following description of the utility knife 1 of this second embodiment, the description will not be repeated. Figures 1 to 10 The structure has already been described in the implementation method. Additionally, regarding... Figures 1 to 10 The same reference numerals are used for structures with the same structure as the utility knife 1 described in the embodiments. Therefore, in the following description of this embodiment, the structure of the utility knife 1 is mainly described. Figures 1 to 10 The differences between the utility knife 1 in the second embodiment and the utility knife 1 will be explained. In particular, the utility knife 1 in the second embodiment is different in the shape of the first slot 1031 and the second slot 1032 of the guide rail 103 of the housing 10 of the utility knife 1. In the second embodiment, the first slot 1031 and the second slot 1032 are rectangular slots, and the connecting surface between the first slot 1031 and the second slot 1032 is a smooth curved surface.

[0050] The utility knife 1 of this application also has a third embodiment, the utility knife 1 of the third embodiment and Figures 1 to 10 Compared to the utility knife 1 of the third embodiment, it has a substantially the same structure in its basic construction. Therefore, in the following description of the utility knife 1 of this third embodiment, the description will not be repeated. Figures 1 to 10 The structure has already been described in the implementation method. Additionally, regarding... Figures 1 to 10 The same reference numerals are used for structures with the same structure as the utility knife 1 described in the embodiments. Therefore, in the following description of this embodiment, the structure of the utility knife 1 is mainly described. Figures 1 to 10 The differences between the utility knife 1 in this third embodiment and the previous one will be explained. In this third embodiment, the utility knife 1 is characterized by the fact that the connecting buckle 304 of the locking buckle 30 can slide relative to the connecting step 104. There is a gap between the connecting step 104 and the connecting buckle 304, which does not hinder the sliding of the locking buckle 30 in the housing 10 and the switching movement of the locking block 303 between the first slot 1031 and the second slot 1032 of the guide rail 103.

[0051] The utility knife 1 of this application also has a fourth embodiment, wherein the utility knife 1 of the fourth embodiment is... Figures 1 to 10 Compared to the utility knife 1 of the previous embodiment, it has a substantially similar structure in its basic construction. Therefore, in the following description of the utility knife 1 of this fourth embodiment, the description will not be repeated. Figures 1 to 10 The structure has already been described in the implementation method. Additionally, regarding... Figures 1 to 10 The same reference numerals are used for structures with the same structure as the utility knife 1 described in the embodiments. Therefore, in the following description of this embodiment, the structure of the utility knife 1 is mainly described. Figures 1 to 10The differences between the utility knife 1 in this fourth embodiment and the previous one will be explained. In this fourth embodiment, the utility knife 1 is characterized by the elasticity of the connecting buckle 304 of the locking buckle 30, and the gap between the connecting step 104 and the connecting buckle 304, which does not hinder the sliding of the locking buckle 30 in the housing 10 and the switching movement of the locking block 303 between the first slot 1031 and the second slot 1032 of the guide rail 103.

[0052] The utility knife 1 of this application, except for the blade 40, has all other structural components that are injection molded and have some elasticity.

[0053] The above is a detailed description of several exemplary embodiments of the utility knife 1 proposed in this application. The following will provide an exemplary description of the usage process of the utility knife 1 proposed in this application.

[0054] Combined with appendix Figures 1 to 6 The usage process of the utility knife 1 proposed in this application is as follows: Push the push button 20 to extend the blade 40 out of the housing 10. When the blade 40 extends to the required length, stop pushing the push button 20 and push the latch 30 in the direction of the blade 40 extension. At this time, the latch block 303 of the latch 30 slides from the second slot 1032 of the guide rail 103 of the housing 10 to the first slot 1031, and the clamping block 302 clamps the blade 40.

[0055] When it is necessary to retract the blade 40, first push the latch 30 in the opposite direction so that the latch block 303 of the latch 30 slides from the first slot 1031 of the guide rail 103 of the housing 10 to the second slot 1032. The clamping block 302 releases the blade 40, and then push the push button 20 to drive the blade 40 back into the housing 10.

[0056] Through the above-described usage process of the utility knife 1 of this application, it can be concluded that the utility knife 1 of this application has a simple structure and is easy to use. The locking buckle 30 can stably lock and fix the blade 40 when the blade 40 is in the extended state, preventing the blade 40 from shaking significantly. When the blade 40 needs to be retracted, it is only necessary to push the locking buckle 30 to release the blade 40 and push the push button 20 to retract the blade 40 into the housing 10.

[0057] In summary, the utility knife proposed in this application includes a housing, a push button, a latch, and a blade. The housing has a first opening and a second opening, which are opposite to and communicate with each other. The push button is slidably disposed in the first opening; the latch is slidably disposed in the second opening. The blade is connected to the push button and can extend or retract from the housing; when the blade is in the extended state, the latch is configured to lock the blade to prevent it from wobbling. The utility knife of this application can achieve the following: after the push button pushes the blade to extend, the latch can fix the blade to prevent significant blade wobbling, and the entire utility knife has a simple structure and is easy to process and assemble.

[0058] It is understood that the various embodiments / implementations provided by this utility model can be combined with each other without creating contradictions, and will not be described one by one here.

[0059] In the above exemplary embodiments, the utility knife proposed by this utility model is described using an application in the field of stationery as an example. It will be readily understood by those skilled in the art that various modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments to apply the relevant designs of this utility model to other types of devices, and these changes are still within the scope of the principle of the utility knife proposed by this utility model.

[0060] It should be noted that the utility knife shown in the accompanying drawings and described in this specification is merely a few examples among many utility knives capable of employing the principles of this invention. It should be clearly understood that the principles of this invention are by no means limited to any detail or component of the utility knife shown in the accompanying drawings or described in this specification.

[0061] In the embodiments of the utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the utility model according to the specific circumstances.

[0062] In the description of the utility model embodiments, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", etc., indicate the orientation or slot relationship based on the orientation or slot relationship shown in the drawings. They are only for the convenience of describing the utility model embodiments and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model embodiments.

[0063] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the utility model. When introducing elements / components / etc. described and / or illustrated herein, the terms "a," "a," and "the above" are used to indicate the presence of one or more elements / components / etc. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0064] The above are merely preferred embodiments of the utility model and are not intended to limit the utility model. For those skilled in the art, various modifications and variations can be made to the utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the utility model should be included within the protection scope of the utility model.

Claims

1. A utility knife, characterized in that, include: A housing having a first opening and a second opening, the first opening and the second opening being opposite to and communicating with each other; A push button, which is slidably disposed in the first opening; A latch, which is slidably disposed in the second opening; The blade is connected to the push button and can extend or retract into the housing; When the blade is in the extended position, the latch is configured to lock the blade to prevent it from wobbling.

2. The utility knife as described in claim 1, characterized in that, The housing is provided with a guide rail, and the latch can slide along the guide rail. The sliding direction of the latch is the same as the extension or retraction direction of the blade.

3. The utility knife as described in claim 2, characterized in that, The latch includes: The main body is configured to slide within the second opening; A clamping block, disposed on the body, is configured to clamp the blade to achieve a locking action on the blade.

4. The utility knife as described in claim 3, characterized in that, The guide rail includes a first slot and a second slot, and the latch includes: A locking block, disposed in the main body, is configured to slide between a first locking slot and a second locking slot along the guide rail. When the locking block is in the first locking slot, the clamping block clamps the blade, and when the locking block is in the second locking slot, the clamping block releases the blade.

5. The utility knife as described in claim 4, characterized in that, The surface of the card block that contacts the guide rail is curved.

6. The utility knife as described in claim 4, characterized in that, If the direction perpendicular to the surface of the housing where the second opening is set is defined as the depth direction, then the maximum value of the depth of the first slot is greater than the maximum value of the depth of the second slot.

7. The utility knife as described in claim 3, characterized in that, The latch also includes a connecting buckle for connecting the latch to the housing. The housing is provided with a connecting step, and the connecting buckle and the connecting step are fitted with a clearance to connect the latch and the housing.

8. The utility knife as described in claim 7, characterized in that, The connecting buckle is an L-shaped snap fastener, and / or The connecting buckle is elastic, and / or The connecting buckle can slide relative to the connecting step.

9. The utility knife as described in claim 8, characterized in that, The push button includes a positioning post, and the blade has a positioning hole. The positioning post and the positioning hole connect the push button and the blade.

10. The utility knife as described in any one of claims 1-9, characterized in that, The housing includes an outer shell and a sheath. The outer shell has a through groove, and the sheath is disposed in the through groove. The first opening is disposed in the sheath, and the blade is capable of moving within the sheath. Along the direction in which the blade extends out of the housing, the sheath protrudes from the outer shell.

Images