Art knife push button structure and art knife

Abstract

The utility model belongs to the technical field of art knives, and particularly relates to an art knife push button structure and an art knife. The push button structure comprises a push button body; the first elastic piece is connected with the push button body; the locking column is arranged at the end, away from the push button body, of the first elastic piece and used for being embedded into the connecting hole of the blade in a matched mode. A receding space is formed in the side, away from the locking column, of the first elastic piece. The utility knife is used for solving the problem that blade replacement of the utility knife is low in efficiency and inconvenient. The locking column is connected with the push button body through the first elastic piece, the position of the locking column can be changed through the elastic force of the elastic piece after the locking column is subjected to external force, meanwhile, the locking column is restored to the original position after the external force is removed, the locking column can be disengaged from the connecting hole of the blade through pushing and pressing of the external force, and then the blade is directly taken down from the front end of the blade path. The blade does not need to be taken down after the push button body is completely taken out of the tool path, and replacement is more convenient and faster.

Description

Technical Field

[0001] This utility model belongs to the field of utility knife technology, specifically relating to a utility knife push button structure and 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, primarily for cutting. Normally, only the tip of the blade is used. It typically consists of a plastic handle and a blade, and has a pull-out design; the blade should not be extended too far out during use.

[0003] Currently, replacing the blade of a conventional utility knife requires removing the bottom cap. Furthermore, some utility knives are so tightly jammed that a tool is needed to pry them open, remove the push button from the blade rail, and then remove the blade from the push button. The process is repeated during installation. There is also an automatic utility knife where the blade can be pushed all the way down to automatically remove the previous blade, and then automatically reload after retraction.

[0004] However, when loading the blades, changing the blades of a conventional utility knife is time-consuming and laborious, while the disadvantages of an automatic utility knife are that multiple blades and a blade magazine result in higher costs and the utility knife is relatively heavy. After using the blades, the tail cap still needs to be removed to load them. In addition, if the blades are accidentally pushed out, they cannot be quickly put back in. The blade magazine must be removed and reloaded, which is not user-friendly and is extremely inconvenient to use. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a utility knife push button structure and utility knife to solve the problem of low efficiency and inconvenience in changing the blade of the utility knife.

[0006] On the one hand, the technical solution of this utility model to solve the above-mentioned technical problems is as follows: a utility knife push button structure, which includes:

[0007] Push button body;

[0008] The first elastic element is connected to the push button body;

[0009] A locking post is disposed on the first elastic element at one end away from the push button body, and is used to match the connecting hole of the embedded blade. The locking post is engaged or disengaged from the blade under the action of the first elastic element.

[0010] Compared with existing technologies, the above technical solutions have the following beneficial effects:

[0011] The locking pin is connected to the push button body through the first elastic element. The locking pin can change its position by the elastic force of the elastic element after being subjected to external force. At the same time, it returns to its original position after the external force is removed. This allows the locking pin to be disengaged from the blade connection hole by pushing or pressing with external force, so that the blade can be directly removed from the front end of the blade rail. There is no need to completely remove the push button body from the blade rail before removing the blade. The replacement is more convenient and faster, and it is different from the current automatic utility knives that require too many blades, resulting in heavy weight.

[0012] Based on the above technical solution, the embodiments of this application can be further improved as follows:

[0013] In one embodiment, a trigger block is provided on the side of the locking post away from the first elastic member, and the trigger block is used to push the locking post away from the connecting hole of the blade.

[0014] By setting a trigger block, the locking pin can be pushed directly by the trigger block to disengage from the connection hole without the need for external tools, thus completing the unlocking process.

[0015] In one embodiment, the edges of the locking post and the trigger block at opposite ends are respectively provided with a first guide surface and a second guide surface, and the two guide surfaces are inclined inward on the side that is close to each other, so as to guide the connecting hole of the blade to disengage from the locking post.

[0016] By setting a guide surface, after the blade's connecting hole disengages from the locking pin, the guide surface, combined with the pulling force, allows the blade to be quickly removed.

[0017] In one embodiment, a second elastic element connected to the push button body is further included, and the trigger block is disposed on the second elastic element at one end away from the push button body.

[0018] In one embodiment, the trigger block is spaced apart from the locking post along the blade displacement direction, and the trigger block is located on the side of the locking post away from the push button body. The trigger block and the locking post overlap at least partially along the direction perpendicular to the blade, and are used to push the locking post away from the connection hole when in contact with the locking post.

[0019] In one embodiment, a limiting part is disposed on the outside of the trigger block, a limiting rod is connected to the trigger block, the limiting part is provided with a through hole for the limiting rod to pass through, and a reset member is provided between the limiting part and the limiting rod, the reset member being used to push the trigger block away from the locking post.

[0020] In one embodiment, the limiting rod is provided with limiting rings at both ends, each with a diameter larger than that of the through hole, and the two ends of the reset member are respectively connected to the limiting rings and the limiting part.

[0021] In one embodiment, a limiting clamp is provided on the push button body, and a limiting gap is provided on the limiting clamp for accommodating the blade. The limiting gap corresponds to the cylindrical surface of the locking post and is used to limit the displacement of the blade in the axial direction of the locking post.

[0022] In one embodiment, the first guide surface and / or the second guide surface are annular guide surfaces.

[0023] On the other hand, this embodiment also discloses a utility knife, which includes the push button structure described above.

[0024] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0025] 1. The locking pin and the push button body are connected by the first elastic element, so that the locking pin can be displaced into the clearance space by external force in the tool rail, so that the connecting hole of the blade is disengaged from the locking pin, and the blade can be directly taken out from the tool rail.

[0026] 2. Set a trigger block. The trigger block can be connected to the locking post through elastic connection, fixed connection or other means. The trigger block is used to squeeze the locking post to deform the first elastic element and cause the locking post to disengage from the connection hole. The operation is convenient. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of embodiments 1 and 2 of this utility model.

[0029] Figure 2 for Figure 1 A schematic diagram of the structure with a limiting gap.

[0030] Figure 3 for Figure 1 A schematic diagram of the structure in which the blade is installed.

[0031] Figure 4 This is a schematic diagram of the structure of Embodiment 3 of this utility model.

[0032] Figure 5 This is a schematic diagram of the structure of Embodiment 4 of this utility model.

[0033] Figure label:

[0034] 1. Push button body; 2. First elastic element; 3. Locking pin; 4. Clearance space; 5. Blade; 6. Connecting hole; 7. First guide surface; 8. Second guide surface; 9. Trigger block;

[0035] 10. Second elastic element;

[0036] 11. Limiting part; 12. Limiting rod; 13. Through hole; 14. Limiting ring; 15. Reset part;

[0037] 16. Limiting clamp; 17. Limiting gap; 18. Cylindrical surface. Detailed Implementation

[0038] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0039] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0040] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0041] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0042] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] Example 1

[0044] like Figure 1-3As shown, in order to solve the problem that the locking pin 3 is fixed in the push button body 1 located in the blade rail and the blade 5 connected to the locking pin 3 cannot be quickly disassembled, this embodiment provides a utility knife push button structure, which includes: push button body 1, first elastic member 2 and locking pin 3.

[0045] The push button body 1 is slidably connected to the blade rail of the utility knife. A first elastic element 2 is connected to the push button body 1 at its front end. A locking post 3 is located on the first elastic element 2 at the end furthest from the push button body 1, and is used to fit into the connection hole 6 of the embedded blade 5. The first elastic element 2 can be made of a material that is elastically deformable and has good fatigue resistance, such as plastic or metal. The locking post engages or disengages with the blade under the action of the first elastic element. The locking post 3 is vertically positioned on the end surface of the first elastic element 2, and is located in the connection hole 6. The matching cylindrical surface 18 simultaneously works with the tool rail to restrict the blade 5; moreover, the first elastic element 2 and the locking pin 3 form a clearance space 4 on the opposite side. When the far end of the first elastic element 2 drives the locking pin 3 to shift towards the clearance space 4, the locking pin 3 disengages from the connecting hole 6. Generally, when the locking pin 3 is set on the upper surface of the first elastic element 2, the clearance space 4 is located in the lower tool rail. When the locking pin 3 is set on the lower surface of the first elastic element 2, the clearance space 4 is located above the first elastic element 2. In this embodiment, in order to facilitate pushing the locking pin 3 from the outside, the locking pin 3 is set on the upper surface of the first elastic element 2.

[0046] The locking pin 3 is connected to the push button body 1 via the first elastic element 2. The locking pin 3 can change its position by the elastic force of the elastic element after being subjected to external force. At the same time, it returns to its original position after the external force is removed. This allows the locking pin 3 to be disengaged from the connecting hole 6 of the blade 5 by pushing or pressing with external force, and the blade 5 can be directly removed from the front end of the blade rail. There is no need to completely remove the push button body 1 from the blade rail before removing the blade 5. The replacement is more convenient and faster, and it is different from the current automatic utility knife which requires too many blades 5, resulting in a heavy weight.

[0047] To facilitate pushing the locking post 3, a trigger block 9 is provided on the side of the locking post 3 away from the first elastic member 2. The trigger block 9 is used to push the locking post 3 away from the connecting hole 6 of the blade 5. The trigger block 9 overlaps at least partially with the locking post 3 in at least one direction so that the trigger block 9 can move and push the locking post 3 to move towards the clearance space 4.

[0048] The trigger block 9 can be fixed to the push button body 1 or other parts of the utility knife by means of fixed connection, elastic connection or movable connection, so that the locking post 3 and the trigger block 9 can contact each other when they form relative movement.

[0049] By setting trigger block 9, without the need for external tools, the locking pin 3 can be pushed directly by trigger block 9 to disengage from the connection hole 6 and complete the unlocking.

[0050] To facilitate a smoother disengagement of the blade 5 from the locking post 3, the edges of the locking post 3 and the trigger block 9 at opposite ends are respectively provided with a first guide surface 7 and a second guide surface 8. The two guide surfaces are inclined inward on the side that is close to each other, in order to guide the connecting hole 6 of the blade 5 to disengage from the locking post 3.

[0051] Specifically, the locking post 3 has a first guide surface 7 on the edge of the end away from the first elastic member 2. The first guide surface 7 is inclined towards the center of the locking post 3 on the side away from the locking post 3, which is used to guide the connecting hole 6 of the blade 5 to disengage from the locking post 3.

[0052] The trigger block 9 is provided with a second guide surface 8 at one end near the locking post 3. The side of the second guide surface 8 away from the trigger block 9 is inclined toward the center of the trigger block 9, which is used to guide the connecting hole 6 of the blade 5 to disengage from the locking post 3.

[0053] As the two guide surfaces gradually move away from the locking post 3 or the trigger block 9, their outer contours gradually become smaller. When the connecting hole 6 of the blade 5 disengages from the locking post 3 and contacts either guide surface, the blade 5 can be guided to the gap between the trigger block 9 and the locking post 3, making it easy to pull out from there. Combined with the force applied to the blade 5, the blade 5 can be quickly removed.

[0054] To facilitate the smooth insertion and removal of the blade 5, in this embodiment, the first guide surface 7 and / or the second guide surface 8 are annular guide surfaces;

[0055] At least one of the two guide surfaces is set as an annular surface, so that when the connecting hole 6 of the blade 5 contacts the guide surface from any direction, it can be smoothly guided away from the locking post 3, which facilitates the insertion and removal of the blade 5.

[0056] like Figure 2 , 3As shown, when the locking pin 3 is sleeved in the connecting hole 6 of the blade 5, in order to ensure the stability of the connection, a limiting clamp 16 is provided on the push button body 1. The limiting clamp 16 has a limiting gap 17 for accommodating the blade 5. The two surfaces of the blade 5 that extend into the limiting gap 17 correspond to the two inner wall surfaces of the limiting clamp 16, respectively. The limiting gap 17 corresponds to the cylindrical surface 18 of the locking pin 3 and is used to limit the axial displacement of the blade 5 on the locking pin 3. When the blade 5 moves axially on the locking pin 3, the limiting clamp 16 limits it in both the up and down directions, preventing the blade 5 from shaking and dislodging from the locking pin 3. The cylindrical surface 18 of the locking pin 3 always maintains contact with the connecting hole 6 of the blade 5 and limits it. When the locking pin 3 is offset by the first elastic element 2, the cylindrical surface 18 of the locking pin 3 is outside the limiting gap 17. At this time, the connecting hole 6 of the blade 5 is dislodged from the limiting pin and can be taken out laterally from the limiting gap 17.

[0057] The limiting clamp 16 is set at approximately the same horizontal height as the locking post 3 and the first elastic member 2. The limiting gap 17 in the limiting clamp 16 partially surrounds the outside of the cylindrical surface 18 of the locking post 3, ensuring the effectiveness of vertical restriction.

[0058] Example 2

[0059] like Figure 1 , 2 As shown, in this embodiment, the trigger block 9 is specifically connected to the push button body 1 via an elastic connection. All other aspects are the same as in embodiment 1 and will not be described again here.

[0060] Specifically, a second elastic element 10 is provided, which is connected to the push button body 1. The trigger block 9 is located on the second elastic element 10 at one end away from the push button body 1. The second elastic element 10 has a similar structure and material to the first elastic element 2 and can be made of deformable materials such as plastic.

[0061] The second elastic element 10 is configured to at least ensure that the trigger block 9 and the locking post 3 are positioned opposite each other. That is, when the second elastic element 10 undergoes elastic deformation, the trigger block 9 can trigger the locking post 3 during displacement and push it to move towards the clearance space 4. In this embodiment, the trigger block 9 can be positioned to overlap the locking post 3 at least partially in the vertical direction, and the trigger block 9 can contact the locking post 3 or be positioned at a distance from the locking post 3.

[0062] Example 3

[0063] like Figure 4 As shown, in this embodiment, the trigger block 9 is specifically disclosed to cooperate with the push button body 1 through a fixed connection. During the movement of the push button body 1, the locking pin 3 contacts the trigger block 9 and undergoes deformation and displacement. Everything else is the same as in embodiment 1, and will not be described again here.

[0064] Specifically, the trigger block 9 is spaced apart from the locking post 3 along the displacement direction of the blade 5, and the trigger block is located on the side of the locking post 3 away from the push button body 1. The trigger block 9 and the locking post 3 at least partially overlap in a direction perpendicular to the blade 5, and are used to push the locking post 3 away from the connecting hole 6 when in contact with the locking post 3. Figure 4 As shown, when the locking pin 3 contacts the trigger block 9, the overlap of the portion perpendicular to the vertical direction of the blade 5 ensures that when the locking pin 3 and the trigger block 9 are in contact, the locking pin 3 can be pushed. That is, the locking pin 3 can only contact the trigger block 9 when the push button body 1 moves forward.

[0065] Specifically, the trigger block 9 is located at the front end of the tool rail. When the push button body 1 moves forward to the end and is almost completely withdrawn, the blade 5 is basically used up and is relatively short. The locking pin 3 in the push button body 1 contacts the trigger block 9. Due to the first elastic element 2, the locking pin 3 avoids the blade 5, causing the blade 5 to disengage from the locking pin 3. With the help of the guide surface, the used blade 5 can be taken out at this time.

[0066] Specifically, such as Figure 4 As shown, the trigger block 9 can be integrally stamped on the bottom front end of the tool rail. The locking post 3 is set on the lower surface of the first elastic member 2. The tool rail is not shown in its complete structure in the figure. The trigger block 9 is fixed and when they come into contact with each other, the locking post 3 is pushed upward to unlock.

[0067] Example 4

[0068] like Figure 5 As shown, in this embodiment, the trigger block 9, with the cooperation of the external limiting part 11, contacts the locking post 3 through a movable connection. The rest is the same as in embodiment 1, and will not be described again here.

[0069] Specifically, the trigger block 9 is externally configured with a limiting part 11. This limiting part 11 can be implemented using a tool rail, or it can be implemented using a component fixedly mounted on the push button body 1 or other locations. In this embodiment, for convenience, a tool rail is directly used as the limiting part 11. Figure 5 In the middle, the limiting part 11 is not fully shown when it is the tool rail. The trigger block 9 is connected to the limiting rod 12. The limiting part 11 is provided with a through hole 13 for the limiting rod 12 to pass through. That is, the through hole 13 is opened on the tool rail. A reset member 15 is provided between the limiting part 11 and the limiting rod 12. The reset member 15 is used to push the trigger block 9 away from the locking post 3. When the blade 5 needs to be removed, the limiting rod 12 connected to the trigger block 9 is manually pushed to drive the trigger block 9 to contact the locking post 3.

[0070] To prevent the limiting rod 12 from disengaging from the through hole 13, the two ends of the limiting rod 12 are respectively provided with limiting rings 14 with a diameter larger than that of the through hole 13. The trigger block 9 is provided on the limiting rod 12 near the locking post 3, and the end of the limiting rod 12 away from the trigger block 9 forms a button for contact with external force. The button and the trigger block 9 are located outside and inside the tool rail, respectively. The two ends of the reset member 15 are respectively connected to the limiting ring 14 and the limiting part 11. The reset member 15 can be implemented by a spring, which is sleeved on the limiting rod 12. When the spring is a compression spring, the compression spring abuts against the outside of the tool rail. When the spring is a tension spring, the tension spring can be connected inside the tool rail.

[0071] Example 5

[0072] This embodiment also discloses a utility knife, which includes a push button structure from embodiments 1-4 above. The push button structure is connected to the blade rail of the utility knife, which allows the blade 5 to be removed from the blade rail without disassembling the push button structure.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A push-button structure for a utility knife, characterized in that, include: Push button body; The first elastic element is connected to the push button body; A locking post is disposed on the first elastic element at one end away from the push button body, and is used to match the connecting hole of the embedded blade. The locking post is engaged or disengaged from the blade under the action of the first elastic element.

2. The push button structure according to claim 1, characterized in that, A trigger block is provided on the side of the locking post away from the first elastic element, and the trigger block is used to push the locking post away from the connecting hole of the blade.

3. The push button structure according to claim 2, characterized in that, The locking post and the trigger block are respectively provided with a first guide surface and a second guide surface at their opposite ends. The two guide surfaces are inclined inward on the side that is close to each other, so as to guide the connecting hole of the blade to disengage from the locking post.

4. The push button structure according to claim 2, characterized in that, It also includes a second elastic element connected to the push button body, and the trigger block is disposed on the second elastic element at one end away from the push button body.

5. The push button structure according to claim 2, characterized in that, The trigger block is spaced apart from the locking post along the displacement direction of the blade, and the trigger block is located on the side of the locking post away from the push button body. The trigger block and the locking post overlap at least partially along the direction perpendicular to the blade, and are used to push the locking post away from the connection hole when in contact with the locking post.

6. The push button structure according to claim 2, characterized in that, The trigger block is externally configured with a limiting part, and a limiting rod is connected to the trigger block. The limiting part is provided with a through hole for the limiting rod to pass through. A reset member is provided between the limiting part and the limiting rod. The reset member is used to push the trigger block away from the locking post.

7. The push button structure according to claim 6, characterized in that, The limiting rod has two limiting rings with a diameter larger than the through hole at each end, and the two ends of the reset member are respectively connected to the limiting rings and the limiting part.

8. The push button structure according to any one of claims 4-7, characterized in that, The push button body is provided with a limiting clamp, and the limiting clamp has a limiting gap for accommodating the blade. The limiting gap corresponds to the cylindrical surface of the locking post and is used to limit the displacement of the blade in the axial direction of the locking post.

9. The push button structure according to claim 3, characterized in that, The first guide surface and / or the second guide surface are annular guide surfaces.

10. A utility knife, characterized in that, Includes the push button structure as described in any one of claims 1-9.

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