Pizza cutter

Abstract

The utility model provides a pizza cutter which comprises a circular blade, protection pieces and a holding piece, the protection pieces are arranged on the two sides of the circular blade, the holding piece is arranged on the outer sides of the protection pieces, and the circular blade is in pivot joint with the protection pieces and the holding piece through pivot joint assemblies. The protection piece can rotate around the pivot joint axis to enable part of the circular blade to be exposed out of the holding piece or cover the circular blade, an elastic piece is arranged between the protection piece and the holding piece, one end of the elastic piece abuts against the protection piece, the other end of the elastic piece abuts against the holding piece, the holding piece is provided with a first locking part and an unlocking switch, and the protection piece is provided with a second locking part. When the protective piece is in a closed state of covering the circular blade relative to the holding piece, the first locking part and the second locking part are matched to limit the protective piece to be opened, and the second locking part can be separated from the first locking part by operating the unlocking switch. The utility model has the advantages that the operation of rotating the protective piece to cover the circular blade is simple and convenient, the safety is good, and the protective piece can be opened more quickly and conveniently by the elastic piece.

Description

Technical Field

[0001] This utility model belongs to the field of food cutting tool technology, and more specifically, it relates to a pizza cutter. Background Technology

[0002] Pizza, also known as pizza, is a popular food originating in Italy. Before eating pizza, it needs to be cut, which requires a pizza cutter. A pizza cutter has a round blade made of polished stainless steel with a metallic texture. When the round blade is rolled, its edge is used to cut the pizza. It is said that it can cut the cheese on the pizza along with the pizza without any effort. A pizza cutter is also called a pizza roller cutter.

[0003] A traditional pizza cutter consists of a handle and a rotating roller blade mounted on one side of the handle. The roller blade is circular. A connecting handle for mounting the roller blade is located on one side of the handle. The connecting handle has a mounting through hole. The roller blade has a fixing through hole at its center that corresponds to the mounting through hole. A connecting bolt is located on the connecting handle, with one end passing through the fixing through hole and the mounting through hole and being fixedly engaged with a fastening nut. When the pizza cutter is stored, the blade is exposed. When the user picks up and uses the pizza cutter, they can easily come into contact with the blade and cut their fingers.

[0004] To address the shortcomings of traditional pizza cutters, new types of pizza cutters with improved overall safety have emerged on the market. For example, Chinese utility model patent number 201820128555.8, entitled "Salad Pizza Cutter," includes an upper cover, a lower cover, a left cutter shaft, and a right cutter shaft. The upper cover has locking holes on both sides. A fixing groove is located in the middle of the lower end of the upper cover, within which the left cutter shaft is positioned. A left blade is located in the middle of the upper end of the left cutter shaft, with a left cutting edge on the outer periphery of the left blade away from the left cutter shaft. A locking groove is located on the left cutter shaft away from the left blade, with a locking head on the side of the left blade away from the locking groove. A positioning hole is located around the locking head, with a protrusion on the side of the positioning hole away from the left blade. The right cutter shaft is located in the fixing groove, away from the left cutter shaft. A right blade is provided at the middle of the upper end of the right cutter shaft. A right cutting edge is provided on the outer periphery of the right cutter shaft away from the right cutter shaft. A second retaining groove is provided on the side of the right cutter shaft away from the right cutter shaft. A retaining cap is provided on the side of the right cutter shaft close to the left cutter shaft. A positioning hole is provided on the outer periphery of the retaining cap. A connecting groove is provided on the side of the positioning hole away from the right blade. A lower cover is provided directly below the upper cover. Support pads are provided at the four corners of the lower end of the lower cover. A cover wall is provided around the lower cover. Connecting plates are provided on both sides of the upper end of the cover wall facing the retaining hole. Connecting heads are provided on the upper end of the connecting plates away from the side wall of the lower cover. A second fixing groove is provided on the upper end of the lower cover facing the fixing groove. A blade storage chamber is provided in the middle of the lower cover.

[0005] While the above technical solution solves the problem of pizza cutter blades being exposed when stored, making it easy for users to come into contact with the blades and cut their fingers, it uses a detachable upper and lower cover structure. This requires the lower cover to be removed each time it is used, which is not very convenient and the lower cover is also easy to lose. Summary of the Invention

[0006] The purpose of this invention is to solve the aforementioned technical problems and to provide a convenient, safe and practical pizza cutter.

[0007] This utility model provides a pizza cutter, including a circular blade, a protective member, and a grip. The protective member is located on both sides of the circular blade, and the grip is located outside the protective member. The circular blade is pivotally connected to the protective member and the grip via a pivot assembly. The protective member can rotate relative to the grip around the pivot axis, exposing part of the circular blade outside the grip or covering the circular blade. An elastic member is provided between the protective member and the grip. One end of the elastic member abuts against the protective member, and the other end abuts against the grip. When the protective member rotates relative to the grip, it can compress or stretch the elastic member, causing elastic deformation and providing elastic force for the protective member to return to its initial position. The grip has a first locking part and an unlocking switch. The protective member has a second locking part that cooperates with the first locking part. When the protective member is in the closed state relative to the grip, covering the circular blade, the first and second locking parts cooperate to restrict the protective member from rotating open relative to the grip. By operating the unlocking switch, the second locking part can be disengaged from the first locking part.

[0008] In the above technical solution, when it is necessary to use a round blade to cut a pizza, simply operate the unlock switch, and the protective part will automatically open under the elastic force of the elastic part. It is convenient and quick to use. When storing, simply operate the protective part to rotate relative to the grip to cover the round blade. The first locking part and the second locking part cooperate to maintain the protective part covering the round blade. The user will not touch the blade edge of the round blade, which is safe and practical.

[0009] Preferably, the pivot assembly includes a first bushing, a second bushing, a first pivot pin, and a second pivot pin. The first and second bushings are respectively located on both sides of the circular blade and are connected and fixed to the circular blade. Pivot holes are provided at the center of the first bushing, the second bushing, the protective member, and the grip. The outer diameter of the first pivot pin matches the diameter of the pivot hole. The first pivot pin is inserted into the pivot hole from the outside of the grip. The second pivot pin is inserted into the pivot hole from the outside of the grip on the opposite side of the first pivot pin and is connected and fixed to the first pivot pin. In this technical solution, after the first and second pivot pins are tightened, the heads of the first and second pivot pins clamp and fix the grip. When the user grips the grip, the circular blade and the protective member can rotate relative to the grip via the outer pivot of the first pivot pin.

[0010] Preferably, the first bushing has a connecting post, and the second bushing has a connecting groove that mates with the connecting post. The connecting post passes through the assembly hole at the center of the circular blade and is inserted into the connecting groove of the second bushing to connect and fix it to the second bushing. The edge of the assembly hole has a positioning port communicating with the assembly hole, the surface of the connecting post has a positioning protrusion that mates with the positioning port, and the groove wall of the connecting groove has a positioning groove that mates with the positioning protrusion. In this technical solution, the circular blade cannot rotate relative to the first bushing and the second bushing; the three are integrated as a whole, which facilitates the positioning and installation of the circular blade and prevents slippage of the circular blade relative to the first bushing and the second bushing when they rotate.

[0011] Preferably, the assembly hole is a regular octagon, and the cross-sectional shapes of the connecting post and the connecting groove mate with the assembly hole. This further prevents the circular blade from slipping relative to the first bushing.

[0012] Preferably, the protective member has an annular groove on its outer side with the pivot axis as the center, and the elastic member is placed in the annular groove. This facilitates the installation of the elastic member.

[0013] Preferably, the annular groove is provided with a first limiting baffle and a second limiting baffle. The elastic element is a compression spring, which is placed between the first and second limiting baffles. The inner side of the gripping member is provided with a pushing part extending into the annular groove. One end of the compression spring abuts against the first limiting baffle, and the other end of the compression spring abuts against the pushing part. When the pushing part abuts against the second limiting baffle, the protective member is in an open state relative to the gripping member, and the cutting edge of the circular blade is exposed outside the gripping member. In this technical solution, by setting the first and second limiting baffles, the compression spring can be conveniently limited, and the pushing part can also be limited. One end of the compression spring abuts against the first limiting baffle, and the other end abuts against the pushing part. When the protective member rotates relative to the gripping member to cover the circular blade, the pushing part will compress the compression spring and cause elastic deformation. In this way, when it is necessary to open the protective member, the compression spring can push the protective member to open automatically, simplifying the operation of opening the protective member.

[0014] Preferably, a cover plate is connected to the side of the protective member with the annular groove. The cover plate has a pivot hole at its center and an annular clearance groove around the pivot hole. The pushing part extends through the clearance groove into the annular groove. In this technical solution, the cover plate blocks and limits the compression spring, which can prevent the compression spring from flying out of the annular groove due to excessive deformation during compression. At the same time, the annular clearance groove on the cover plate facilitates the extension of the pushing part of the gripper into the annular groove to abut against one end of the compression spring.

[0015] Preferably, the elastic element is a ring torsion spring, one end of which is fixedly connected to the protective element, and the other end of which is fixedly connected to the gripping element. In this technical solution, when the protective element rotates relative to the gripping element to cover the circular blade, the ring torsion spring undergoes elastic deformation. Thus, when it is necessary to open the protective element, the ring torsion spring can push the protective element to open automatically, simplifying the operation of opening the protective element.

[0016] Preferably, the protective component is a housing having a first inner cavity and a first opening communicating with the first inner cavity. The housing is composed of an upper housing and a lower housing that are fastened together. The circular blade is placed in the first inner cavity. The gripping component is a cover having a second inner cavity and a second opening communicating with the second inner cavity. The housing is placed in the second inner cavity. The cover includes an upper cover and a lower cover respectively located on the outer sides of the upper and lower housings. The rear end of the upper cover is provided with a C-shaped connecting groove, and the rear end of the lower cover is provided with a connecting shaft. The connecting shaft is engaged with the C-shaped connecting groove for rotatable connection. The outer side of the housing near the first opening is provided with an operating part that protrudes outward relative to the housing surface. The second locking part is a hook, which is located on the upper housing in front of the operating part. The first locking part is a latch. The unlocking switch is a press plate located at the latch position and connected to the upper cover. When the housing rotates relative to the cover to the closed state covering the circular blade, the hook engages with the latch to latch. Pressing the press plate can disengage the hook from the latch. In this technical solution, the protective components are connected by a snap-fit ​​upper shell and a lower shell, and the gripping components are all connected by a combination of upper shell and lower shell, which facilitates the installation of each component and makes manufacturing easier in the production and processing stage.

[0017] Preferably, the housing has a first protrusion located behind the operating part, and the inner side of the cover has a second protrusion that mates with the first protrusion. When the housing is rotated relative to the cover to the fully open state, the second protrusion mates with the first protrusion to restrict the housing from rotating relative to the cover. In this way, when the circular blade is performing a normal cutting operation, the housing will not rotate relative to the cover to cover the circular blade and affect its use. When it is necessary for the housing to cover the circular blade, a certain force is applied to the operating part so that the first protrusion overcomes the resistance of the second protrusion, and the housing can be rotated relative to the cover to cover the circular blade smoothly.

[0018] The advantages of this invention are that the protective component, the circular blade, and the grip are integrated into a single structure, preventing the protective component from being lost; the protective component covers or exposes the circular blade by rotating relative to the grip, making the opening and closing of the protective component simple and convenient; when the protective component covers the circular blade, the user will not touch the blade, ensuring good safety; and when the protective component needs to be opened, the elastic component allows for faster and more convenient opening. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the explosive decomposition of this utility model;

[0020] Figure 2 This is a schematic diagram of the connection between the upper cover and the lower cover of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the circular blade of this utility model assembled with the first bushing and the second bushing;

[0022] Figure 4 This is a schematic diagram of the present invention, omitting the upper cover and the second pivot pin;

[0023] Figure 5 This is a schematic diagram of the structure of the present invention, omitting the upper cover.

[0024] Figure 6 This is a cross-sectional view of the upper cover of this utility model, showing the cooperation between the pushing part and the compression spring.

[0025] Figure 7 This is a schematic diagram of the structure of the present invention when the housing covers the circular blade;

[0026] Figure 8 This is a cross-sectional structural diagram showing the cooperation between the first locking member and the second locking member of this utility model.

[0027] Figure 9 This is a schematic diagram of the structure of Embodiment 3 of the present invention, omitting the upper cover, lower cover, first pivot pin, and second pivot pin.

[0028] Figure 10 This is a schematic diagram of the overall structure of Embodiment 3 of this utility model. Detailed Implementation

[0029] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0030] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0031] Example 1

[0032] This utility model provides a pizza cutter, such as Figure 1 and Figure 2As shown, the device includes a circular blade 1, a protective component, and a gripper. The protective component is located on both sides of the circular blade 1, and the gripper is located outside the protective component. The circular blade 1 is pivotally connected to the protective component and the gripper via a pivot assembly. The protective component can rotate relative to the gripper around the pivot axis, allowing a portion of the circular blade 1 to be exposed outside the gripper or to cover the circular blade 1. In this embodiment, the protective component is a housing with a first inner cavity and a first opening communicating with the first inner cavity. The housing is composed of an upper housing 2 and a lower housing 3 that are fastened together. The circular blade 1 is placed in the first inner cavity. The gripper is a cover with a second inner cavity and a second opening communicating with the second inner cavity. The cover includes an upper cover 4 and a lower cover 5 respectively located outside the upper housing 2 and the lower housing 3. The rear end of the upper cover 4 is provided with a C-shaped connecting groove 44, and the rear end of the lower cover 5 is provided with a connecting shaft 51. The connecting shaft 51 is engaged with the C-shaped connecting groove 44 for rotatable connection. The housing is placed in the second inner cavity.

[0033] like Figure 1 and Figure 4 As shown, in this embodiment, an elastic element 6 is provided between the upper housing 2 and the upper cover 4. One end of the elastic element 6 abuts against the upper housing 2, and the other end of the elastic element 6 abuts against the upper cover 4. When the housing rotates relative to the cover, it can compress or stretch the elastic element 6 to make the elastic element 6 undergo elastic deformation, thereby providing elastic force for the housing to return to its initial position. The upper cover 4 is provided with a first locking part 42 and an unlocking switch 43. The upper housing 2 is provided with a second locking part 23 that cooperates with the first locking part 42. When the housing is in the closed state relative to the cover, covering the circular blade 1, the first locking part 42 and the second locking part 23 cooperate to restrict the housing from rotating and opening relative to the cover. By operating the unlocking switch 43, the second locking part 23 can be disengaged from the first locking part 42.

[0034] like Figure 1 and Figure 3 As shown, in this embodiment, the pivot assembly includes a first bushing 12, a second bushing 13, a first pivot pin 7, and a second pivot pin 8. The first bushing 12 and the second bushing 13 are respectively disposed on both sides of the circular blade 1 and are connected and fixed to the circular blade 1. The first bushing 12, the second bushing 13, the upper housing 2, the lower housing 3, the upper cover 4, and the lower cover 5 are all provided with pivot holes 9 at their center positions. The outer diameter of the first pivot pin 7 matches the diameter of the pivot hole 9. The first pivot pin 7 is inserted into the pivot hole 9 from the outside of the lower cover 5. The second pivot pin 8 is inserted into the pivot hole 9 from the outside of the upper cover 4 and is connected and fixed to the first pivot pin 7.

[0035] like Figures 4 to 6As shown, in this embodiment, the outer side of the upper housing 2 is provided with an annular groove 21 with the pivot axis as the axis. The annular groove 21 is provided with a first limiting baffle 211 and a second limiting baffle 212. The elastic element 6 is a compression spring. The inner side of the upper cover 4 is provided with a pushing part 41 extending into the annular groove 21. The compression spring is placed between the first limiting baffle 211 and the second limiting baffle 212. One end of the compression spring abuts against the first limiting baffle 211, and the other end of the compression spring abuts against the pushing part 41. When the pushing part 41 abuts against the second limiting baffle 212, the housing is in an open state relative to the cover, and the cutting edge of the circular blade 1 is exposed outside the cover.

[0036] like Figure 4 and Figure 5 As shown, as a further improvement, a cover plate 10 is connected to one side of the upper housing 2 with an annular groove 21. The cover plate 10 is connected and fixed to the upper housing 2 by a snap-fit. The cover plate 10 has a pivot hole 9 at its center and an annular clearance groove 101 around the pivot hole. The pushing part 41 extends through the clearance groove 101 into the annular groove 21.

[0037] like Figure 5 , Figure 7 and 8 As shown, in this embodiment, the outer side of the housing near the first opening is provided with an operating part 22 that protrudes outward relative to the housing surface. The second locking part 23 is a hook, which is located on the upper housing 2 in front of the operating part 22. The first locking part 42 is a latch, and the unlocking switch 43 is a pressing plate located at the latch and connected to the upper cover 4. When the housing rotates relative to the cover to the closed state of covering the circular blade 1, the hook engages with the latch and latches. The hook can be disengaged from the latch by pressing the pressing plate.

[0038] like Figure 5 As shown, as a further improvement, the housing is provided with a first protrusion 24 at the position behind the operating part 22, and the inner side of the cover is provided with a second protrusion 51 that cooperates with the first protrusion 24. When the housing is rotated relative to the cover to the open state of exposing the circular blade 1, the second protrusion 51 cooperates with the first protrusion 24 to restrict the housing from rotating and opening relative to the cover.

[0039] Example 2

[0040] The structure of this embodiment is similar to that of embodiment 1, except that, as follows: Figure 3As shown, the first bushing 12 is provided with a connecting post 121, and the second bushing 13 is provided with a connecting groove 131 that mates with the connecting post 121. The connecting post 121 passes through the assembly hole 11 provided at the center of the circular blade 1 and is inserted into the connecting groove 131 of the second bushing 13 to connect and fix it to the second bushing 13. The edge of the assembly hole 11 is provided with a positioning port 111 that communicates with the assembly hole 11. The surface of the connecting post 121 is provided with a positioning protrusion 1211 that mates with the positioning port 111. The groove wall of the connecting groove 131 is provided with a positioning groove 1311 that mates with the positioning protrusion 1211.

[0041] In this embodiment, the assembly hole 11 is in the shape of a regular octagon, and the cross-sectional shape of the connecting post 121 and the cross-sectional shape of the connecting groove 131 are also in the shape of a regular octagon to match the assembly hole.

[0042] Example 3

[0043] The structure of this embodiment is similar to that of embodiment 2, except that, as follows: Figure 9 and Figure 10 As shown, the elastic element 6 is a ring torsion spring. One end of the ring torsion spring is connected and fixed to the upper housing 2, and the other end of the ring torsion spring is connected and fixed to the upper cover 4.

[0044] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A pizza cutter comprising a circular blade, a protective member, and a grip, wherein the protective member is disposed on both sides of the circular blade, and the grip is disposed outside the protective member; the circular blade is pivotally connected to the protective member and the grip via a pivot assembly; the protective member is rotatable relative to the grip about a pivot axis, such that a portion of the circular blade is exposed outside the grip or covered by the circular blade, characterized in that... An elastic element is provided between the protective member and the gripping member. One end of the elastic element abuts against the protective member, and the other end abuts against the gripping member. When the protective member rotates relative to the gripping member, it can compress or stretch the elastic element to cause elastic deformation, thereby providing elastic force for the protective member to return to its initial position. The gripping member is provided with a first locking part and an unlocking switch. The protective member is provided with a second locking part that cooperates with the first locking part. When the protective member is in the closed state relative to the gripping member, covering the circular blade, the first locking part and the second locking part cooperate to restrict the protective member from rotating and opening relative to the gripping member. By operating the unlocking switch, the second locking part can be disengaged from the first locking part.

2. The pizza cutter according to claim 1, characterized in that, The pivot assembly includes a first bushing, a second bushing, a first pivot pin, and a second pivot pin. The first bushing and the second bushing are respectively located on both sides of the circular blade and are connected and fixed to the circular blade. The first bushing, the second bushing, the protective member, and the gripping member are all provided with pivot holes at their center positions. The outer diameter of the first pivot pin body matches the diameter of the pivot hole. The first pivot pin body is inserted into the pivot hole from the outside of the gripping member. The second pivot pin body is inserted into the pivot hole from the outside of the gripping member on the opposite side of the first pivot pin and is connected and fixed to the first pivot pin.

3. The pizza cutter according to claim 2, characterized in that, The first bushing is provided with a connecting post, and the second bushing is provided with a connecting groove that mates with the connecting post. The connecting post passes through the assembly hole provided at the center of the circular blade and is inserted into the connecting groove of the second bushing to connect and fix with the second bushing. The edge of the assembly hole is provided with a positioning port that communicates with the assembly hole. The surface of the connecting post is provided with a positioning protrusion that mates with the positioning port. The groove wall of the connecting groove is provided with a positioning groove that mates with the positioning protrusion.

4. The pizza cutter according to claim 3, characterized in that, The assembly hole is octagonal in shape, and the cross-sectional shape of the connecting column and the cross-sectional shape of the connecting groove are matched with the assembly hole.

5. The pizza cutter according to any one of claims 1 to 4, wherein the outer side of the protective member is provided with an annular groove centered on the pivot axis, and the elastic member is placed in the annular groove.

6. The pizza cutter according to claim 5, characterized in that, The annular groove is provided with a first limiting baffle and a second limiting baffle. The elastic element is a compression spring, which is placed between the first limiting baffle and the second limiting baffle. The inner side of the gripping member is provided with a pushing part that extends into the annular groove. One end of the compression spring abuts against the first limiting baffle, and the other end of the compression spring abuts against the pushing part. When the pushing part abuts against the second limiting baffle, the protective member is in an open state relative to the gripping member, and the cutting edge of the circular blade is exposed outside the gripping member.

7. The pizza cutter according to claim 6, characterized in that, The protective component has a cover plate connected to one side with an annular groove. The cover plate has a pivot hole at its center and an annular clearance groove around the pivot hole. The pushing part extends through the clearance groove into the annular groove.

8. The pizza cutter according to claim 5, characterized in that, The elastic element is a ring torsion spring, one end of which is connected and fixed to the protective element, and the other end of which is connected and fixed to the gripping element.

9. The pizza cutter according to claim 1, characterized in that, The protective component is a housing having a first inner cavity and a first opening communicating with the first inner cavity. The housing is composed of an upper housing and a lower housing that are fastened together. The circular blade is placed in the first inner cavity. The gripping component is a cover having a second inner cavity and a second opening communicating with the second inner cavity. The housing is placed in the second inner cavity. The cover includes an upper cover and a lower cover respectively located on the outer sides of the upper and lower housings. The rear end of the upper cover is provided with a C-shaped connecting groove, and the rear end of the lower cover is provided with a connecting shaft. The connecting shaft is engaged with the C-shaped connecting groove and rotatably connected to it. The outer side of the housing near the first opening is provided with an operating part that protrudes outward relative to the housing surface. The second locking part is a hook, which is located on the upper housing in front of the operating part. The first locking part is a latch. The unlocking switch is a press plate located at the latch position and connected to the upper cover. When the housing rotates relative to the cover to the closed state covering the circular blade, the hook engages with the latch and latches. Pressing the press plate can disengage the hook from the latch.

10. The pizza cutter according to claim 9, characterized in that, The housing has a first protrusion located behind the operating part, and the inner side of the cover has a second protrusion that cooperates with the first protrusion. When the housing is rotated relative to the cover to the fully open state, the second protrusion cooperates with the first protrusion to restrict the housing from rotating and opening relative to the cover.

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