A box opener

Abstract

An open box knife, including knife body and knife head, the knife head is combined by blade and blade holder, the middle part of the blade holder is provided with connecting plate, the front end of the knife body is triangular, the connecting plate is corresponding triangular plate, the front end of the knife body is provided with opening slot for inserting the rear end of the connecting plate, the inside of the knife body and the rear side of the opening slot are provided with first buckle for locking with the connecting plate, the knife head is detachably connected with the knife body through the connecting plate, and the blade blade edge faces the triangular head of the knife body, the left and right sides of the blade holder are provided with baffle, the baffle and the triangular shape between the front end of the knife body form cutting knife groove, the upper end surface of the knife body is provided with button for disassembling the knife head, the inside of the knife body is provided with spare blade holder for storing spare knife head and second buckle for locking with the spare blade holder, the upper end surface of the knife body is provided with push button for opening the spare blade holder. The utility model has the advantages of simple and reasonable structure, convenient and safe operation, can ensure that the goods in the box are not damaged while opening the box, greatly improves the product performance price ratio, and is suitable for various occasions.

Description

Technical Field

[0001] This utility model belongs to the field of cutting tool technology and relates to a box opener. Background Technology

[0002] A box opener is a common hand tool, often used to open shipping boxes, remove seals, and so on. Currently, box openers on the market are structurally similar to traditional utility knives. While they make opening boxes convenient, they pose safety hazards, and the blades can easily damage items inside if not handled carefully. Furthermore, most existing box openers lack the function of storing spare blades, making blade replacement inconvenient.

[0003] An investigation revealed that Chinese patent CN202221966120.3, entitled "A Box Opener with Spare Blade Storage Function," includes a lower blade assembly and an upper blade assembly located between the inner walls of the lower blade assembly. A threaded plug connects the lower and upper blade assemblies. The lower blade assembly includes a lower blade base with a groove at its upper end. Two symmetrical blade placement slots are carved at the upper end of the groove, with multiple blades placed between the inner walls of each slot. A cylindrical hole is carved at the upper end of the groove, located between the inner walls of the two blade placement slots. This design allows for the opening of the box opener's head, enabling the storage of additional spare blades on the other side, significantly improving utilization. While this box opener can store spare blades, its operation is not safe or convenient, and blade replacement is also inconvenient. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a box opener that is simple and compact in structure and safe and convenient to operate, in view of the above-mentioned technical status.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a box opener, including a blade body and a blade head, characterized in that: the blade head is composed of a blade and a blade holder, the middle part of the blade holder is provided with a connecting plate that is inserted into the blade body, the front end of the blade body is triangular, the connecting plate is a corresponding triangular plate, an opening groove is provided at the front end of the blade body for the rear end of the connecting plate to be inserted, a first buckle is provided inside the blade body and on the rear side of the opening groove to lock with the connecting plate, the blade head is detachably connected to the blade body through the connecting plate, and the blade edge faces the triangular head of the blade body, the left and right sides of the blade holder are provided with baffles to protect the blade, a cutting groove is formed between the baffles and the hypotenuse of the front triangular head of the blade body, a button for removing the blade head is provided on the upper end of the blade body, a spare blade holder for storing spare blades and a second buckle for locking with the spare blade holder are built into the blade body, and a push button for removing the spare blade holder is provided on the upper end of the blade body.

[0006] Furthermore, the blade is formed by joining an upper blade and a lower blade. After the upper blade and the lower blade are joined, an opening groove is formed at the front end for inserting the rear end of the connecting plate of the blade head holder, and a strip-shaped notch is formed on one side of the rear end for inserting or ejecting the blade holder. A limiting step is formed at the bottom of the opening groove to abut against the rear end of the connecting plate.

[0007] Furthermore, the upper half of the blade has an installation groove on the rear side of the opening groove for inserting the first buckle, and the rear end of the connecting piece has a strip-shaped locking hole. The front end of the first buckle has a locking buckle that cooperates with the locking hole. The bottom of the rear end of the first buckle is supported by a first spring between it and the lower half of the blade, so that the first buckle has a tendency to always engage and lock with the locking hole.

[0008] Furthermore, the button is located at the rear of the upper end face of the first buckle, and the button and the first buckle are an integral part, with a hollowed-out part on the upper half of the blade for the button to be exposed.

[0009] Furthermore, the rear side of the outer end face of the spare knife holder is hinged to the rear end of the strip-shaped notch of the knife body via a pivot. A buckle groove is recessed in the middle of the front end of the spare knife holder. A sliding groove is formed in the upper half of the knife body for the second buckle to be inserted and to slide back and forth. The rear end of the second buckle is provided with a buckle that engages with the buckle groove of the spare knife holder for locking. A second spring is supported between the front end of the second buckle and the inner wall of the sliding groove, so that the second buckle has a tendency to always move backward and lock with the spare knife holder.

[0010] Furthermore, a third spring is provided between the lower rear end of the spare knife holder and the inner wall of the blade, so that the spare knife holder always tends to pop outwards towards the blade. The push button is located on the upper surface of the second buckle, and the push button and the second buckle are an integral part. An opening is provided on the upper half of the blade to expose the push button.

[0011] Furthermore, the blade is made of aluminum alloy, and a hanging hole is provided at the rear end of the blade for easy hanging.

[0012] Furthermore, the blade is a stainless steel blade, and the blade head is a single piece.

[0013] Finally, a slot is provided inside the tool holder to insert a spare tool head. An elastic pressure plate is connected above the slot to the tool holder to strengthen the positioning and fixation of the spare tool head.

[0014] Compared with existing technologies, the advantages of this utility model are as follows: the blade head adopts a sickle-shaped design, which can quickly cut materials such as cardboard boxes, packing straps, and foam, making unpacking and handling items simpler and faster; baffles are provided on both sides of the blade to effectively prevent fingers from accidentally contacting the sharp blade, ensuring operational safety; a spare blade holder is provided for convenient and quick blade head replacement. This utility model has a simple and reasonable structure, is convenient and safe to operate, and ensures that the items inside the box are not damaged while opening the box, greatly improving the product's cost-effectiveness. Furthermore, the blade head is easy to replace, making it suitable for various applications. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0016] Figure 2 for Figure 1 A structural diagram showing the upper half of the blade in its disassembled state;

[0017] Figure 3 for Figure 2 Further breakdown diagram;

[0018] Figure 4 This is an exploded view of an embodiment of the present invention from another angle. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] like Figures 1-4 As shown, a box opener includes a blade A and a blade head B. The blade head B is a sickle-shaped blade composed of a blade 4 and a blade holder 5. A connecting plate 51, which is inserted into the blade body A, protrudes from the middle of the blade holder 5. The front end of the blade body A is triangular, and the connecting plate 51 is a corresponding triangular plate. An opening groove 10 is provided at the front end of the blade body A for the rear end of the connecting plate 51 to be inserted. A first latch 6, which engages with and locks against the connecting plate 51, is provided inside the blade body A and behind the opening groove 10. The blade head B is connected via... Plate 51 is detachably connected to blade A, and the blade 4 faces the triangular head of the blade. The left and right sides of the blade holder 5 are provided with baffles 52 to protect the blade 4. The baffles 52 and the front triangular hypotenuse of the blade A form a cutting groove 53. The upper end of the blade A is provided with a button 62 for removing the blade head B. The blade A has a built-in spare blade holder 3 for storing spare blade heads and a second buckle 7 that locks in conjunction with the spare blade holder 3. The upper end of the blade A is provided with a push button for opening the spare blade holder 3.

[0021] The specific structure is as follows: The blade A is made of aluminum alloy and is formed by the joining of an upper blade 1 and a lower blade 2. After the upper blade 1 and the lower blade 2 are joined, an opening groove 10 is formed at the front end for the rear end of the connecting plate 51 of the blade head holder 5 to be inserted. A strip-shaped notch 13 is formed on one side of the rear for the blade holder 3 to be inserted or ejected. A limiting step 14 is formed at the bottom of the opening groove 10 to abut against the rear end of the connecting plate 51. The baffle 52 is basically parallel to the side of the connecting plate 51 on the same side. An installation groove 15 for the first buckle 6 to be inserted is provided in the upper blade 1 and at the rear side of the opening groove 10. A strip-shaped locking hole 511 is provided at the rear end of the connecting plate 51. The front end of the first buckle 6 has a locking buckle 61 that cooperates with the locking hole. A first spring 60 is supported between the bottom of the rear end of the first buckle 6 and the inner wall of the lower blade 2, so that the first buckle 6 always tends to engage and lock with the locking hole 511. Button 62 is located at the rear of the upper end face of the first buckle 6. Button 62 and the first buckle 6 are integral parts. A hollow part 11 is provided on the upper half of the blade body 1 to expose button 62. The rear side of the outer end face of the spare blade holder 3 is hinged to the rear end of the strip-shaped notch of the blade body A through a pivot. A buckle groove 31 is recessed in the middle of the front end of the spare blade holder 3. A sliding groove 16 is formed in the upper half of the blade body 1 for the second buckle 7 to be inserted and to slide back and forth. The rear end of the second buckle 7 has a buckle 71 that engages with the buckle groove 31 of the spare blade holder 3 for locking. A second spring is supported between the front end of the second buckle 7 and the inner wall of the sliding groove 16, so that the second buckle 8 has a tendency to always move backward and lock with the spare blade holder 3. After the spare blade holder 3 and the second buckle 7 are locked, its outer surface is flush with the blade body. A slot 32 is provided in the spare blade holder 3 for inserting a spare blade head. An elastic pressure plate 33 is connected above the slot 32 of the spare blade holder 3 to strengthen the positioning and fixing of the spare blade head.

[0022] A third spring 8 is provided between the lower rear end of the knife holder 3 and the inner wall of the knife body, so that the knife holder 3 always tends to pop outwards towards the knife body. The push button 72 is located on the upper surface of the second buckle 7. The push button 72 and the second buckle 7 are an integral part. An opening 12 is provided on the upper half of the knife body 1 for the push button 72 to be exposed.

[0023] In addition, the rear end of the blade A has a hanging hole 10 for easy hanging. The blade 4 is a stainless steel blade, and the blade head B is a single piece.

[0024] When it is necessary to replace the blade head B, first press button 62, the first latch 6 disengages from the connecting plate 51, and the blade head B is removed; then push the push button 72 forward, the second latch 7 is released from locking with the spare blade holder 3, and under the action of the third spring 8, the spare blade holder 3 pops out, and the spare blade head is removed; align the connecting plate 51 of the spare blade head with the front opening slot 10 of the blade body A and insert it, locking it with the first latch 6, thus completing the replacement of the blade head B.

[0025] Because the blade head B is sickle-shaped and the blade 4 has baffles on both sides, it is safer to use. It can ensure that the items inside the box are not damaged while opening the box, which greatly improves the product's cost performance.

[0026] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A box opener, comprising a blade and a blade tip, characterized in that: The blade head is composed of a blade and a blade holder. The blade holder has a connecting plate protruding from the middle, which is inserted into the blade body. The front end of the blade body is triangular, and the connecting plate is a corresponding triangular plate. An opening slot is provided at the front end of the blade body for the rear end of the connecting plate to be inserted. A first buckle is provided inside the blade body, behind the opening slot, to lock with the connecting plate. The blade head is detachably connected to the blade body through the connecting plate, and the cutting edge of the blade faces the triangular head of the blade body. The left and right sides of the blade holder have baffles to protect the blade. A cutting groove is formed between the baffles and the hypotenuse of the front triangular head of the blade body. A button for removing the blade head is provided on the upper end of the blade body. The blade body has a spare blade holder for storing spare blade heads and a second buckle that locks with the spare blade holder. A push button for removing the spare blade holder is provided on the upper end of the blade body.

2. The box opener according to claim 1, characterized in that: The blade is formed by joining an upper blade and a lower blade. After joining the upper and lower blades, an opening groove is formed at the front end for inserting the rear end of the connecting plate of the blade head holder, and a strip-shaped notch is formed on the rear side for inserting or popping out the blade holder. A limiting step is formed at the bottom of the opening groove to abut against the rear end of the connecting plate.

3. The box opener according to claim 2, characterized in that: The upper half of the blade has an installation groove on the rear side of the opening groove for inserting the first buckle. The rear end of the connecting piece has a strip-shaped locking hole. The front end of the first buckle has a locking buckle that cooperates with the locking hole. The bottom of the rear end of the first buckle is supported by a first spring between it and the lower half of the blade, so that the first buckle has a tendency to always engage and lock with the locking hole.

4. The box opener according to claim 3, characterized in that: The button is located at the rear of the upper end face of the first buckle. The button and the first buckle are an integral part, and a hollow part is provided on the upper half of the blade to expose the button.

5. The box opener according to claim 4, characterized in that: The rear side of the outer end face of the spare knife holder is hinged to the rear end of the strip-shaped notch of the knife body via a pivot. A buckle groove is recessed in the middle of the front end of the spare knife holder. A sliding groove is formed in the upper half of the knife body for the second buckle to be inserted and to slide back and forth. The rear end of the second buckle is provided with a buckle that engages with the buckle groove of the spare knife holder for locking. A second spring is supported between the front end of the second buckle and the inner wall of the sliding groove, so that the second buckle has a tendency to always move backward and lock with the spare knife holder.

6. The box opener according to claim 5, characterized in that: A third spring supports the lower rear end of the spare knife holder and the inner wall of the blade, giving the spare knife holder a tendency to always pop outwards towards the blade. The push button is located on the upper surface of the second latch, and the push button and the second latch are an integral part. An opening is provided on the upper half of the blade to expose the push button.

7. The box opener according to any one of claims 1 to 6, characterized in that: The blade is made of aluminum alloy, and a hanging hole is provided at the rear end of the blade for easy hanging.

8. The box opener according to any one of claims 1 to 6, characterized in that: The blade is made of stainless steel, and the cutting head is a single piece.

9. The box opener according to any one of claims 1 to 6, characterized in that: The spare tool holder has a slot for inserting a spare tool head. An elastic pressure plate is connected above the slot to the spare tool holder to enhance the positioning and fixation of the spare tool head.

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