Bread knife

Abstract

The utility model discloses a bread knife which comprises a knife handle assembly, a cutting assembly movably installed at the front end of the knife handle assembly and a switch assembly driving the cutting assembly to move, and the cutting assembly comprises a left blade and a right blade which move alternately. When the bread knife is in use, the contact on the elastic piece contacts with the contact on the contact piece, then the control panel is switched on, the motor is controlled to operate to drive the blade to work, direct contact between the key switch and the control panel is avoided, damage to the control panel is reduced, and the service life of the bread knife is prolonged. Through the design that the first touch strip and the second touch strip which serve as the sensing assemblies are installed at the bottom of the lower shell, the equipment can be conducted only by touching the touch strips with fingers, pollution to the sensing assemblies is reduced to a great extent, and the risk that stains enter the equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bread knives, in particular to a bread knife. Background Art

[0002] A bread knife is a kitchen knife that is specifically designed for cutting bread. It usually has a long, thin blade with a serrated edge. This design allows the bread knife to easily cut through various types and thicknesses of bread without flattening or breaking the bread. The serrated edge is able to easily cut through the crust of the bread without damaging the internal structure. This makes the cut smoother and easier.

[0003] After searching, the patent with application number 202220173957.6 discloses a safe automatic bread slicer, including several serrated blades, a connecting component, a shell and a driving component located inside the shell, one end of the serrated blade is connected to the shell, the driving component includes a motor, a worm and a transmission gear, one end of the motor is electrically connected to a battery, and the motor drives the worm and the transmission gear to make the serrated blade reciprocate, and the surface of the shell is provided with a sensing component for sensing with the human body. The sensing component can assist the connecting component to cut off or connect the power to the battery. When the human body contacts the sensing component, the human body acts as a conductor to connect the connecting component to the power of the battery, so that the battery powers the motor; when the human body is separated from the sensing component, the battery is cut off to prevent the machine from operating incorrectly and causing harm to the user, thereby protecting the user, improving the safety performance of the product and reducing the probability of accidents.

[0004] The above scheme uses a sensing component for controlling the on and off of the device to be installed on the upper surface of the casing. When in use, the contact area between the hand and the sensing component is large, and contaminants such as stains and sweat on the hands can easily enter the inside of the casing through the seams, affecting the stable operation and service life of the device. In addition, in the above case, the button PCB board is directly touched by pressing the push button, resulting in rigid contact, which can easily damage the button PCB board and reduce the service life of the device. Therefore, we need to propose a bread knife. Utility Model Content

[0005] The utility model aims to provide a bread knife. Through the design of an electric contact structure, when the device is turned on, the key switch first contacts the spring sheet, and the contact on the spring sheet then contacts the contact on the contact sheet, and then the control board is turned on, thereby controlling the motor to drive the blade to work, thereby avoiding direct contact between the key switch and the control board, reducing damage to the control board, and thereby increasing the service life of the bread knife; through the design that the touch strips 1 and 2 as sensing components are installed on the bottom of the lower shell, the device can be turned on by only touching the touch strips with fingers, thereby greatly reducing the pollution of the sensing components and reducing the risk of stains entering the interior of the device, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a bread knife, comprising a handle assembly, a cutting assembly movably mounted at the front end of the handle assembly, and a switch assembly driving the cutting assembly to move, wherein the cutting assembly comprises a left blade and a right blade that move alternately, the handle assembly comprises an upper shell and a lower shell that are clamped together, the switch assembly comprises a control mechanism and a driving mechanism mounted between the upper shell and the lower shell, and a control panel is mounted inside the lower shell;

[0007] The driving mechanism comprises an inner container and a left transmission clamp and a right transmission clamp alternately movably mounted on the inner container, the lower end of the inner container is buckled with an inner container cover, the left blade is plugged and fixed on the left transmission clamp, and the right blade is plugged and fixed on the right transmission clamp;

[0008] The control mechanism includes an electrical contact structure electrically connected to the control panel, a knife unloading bracket installed inside the upper shell, a key slider slidably installed on the knife unloading bracket, a key switch movably installed on the key slider, and the electrical contact structure includes a steel plate, a spring sheet and a contact sheet are respectively inserted on the upper side of the steel plate through tentacles, the contact points on the spring sheet are aligned with the contact points on the contact sheet, an insertion strip is inserted below the steel plate, and the spring sheet is connected to a first spring that abuts against the key switch.

[0009] Preferably, an eccentric shaft is connected between the left transmission clamp and the right transmission clamp, a turbine is installed on the eccentric shaft, a motor is installed inside the inner tank, a worm gear is connected to one end of the output shaft of the motor, and the worm gear is meshed with the turbine.

[0010] Preferably, it also includes a knife unloading assembly, which includes a pressure plate installed inside a knife unloading bracket, and a right knife unloading part and a left knife unloading part are movably installed on both sides of the knife unloading bracket, a right slider is inserted into one side of the right knife unloading part, and a left slider is inserted into one side of the left knife unloading part, and the left slider and the right slider are respectively in contact with the two sides of the pressure plate.

[0011] Preferably, a second spring is connected between the inner container and the pressure plate, and the pressure plate is pressed onto the left blade and the right blade.

[0012] Preferably, a left spring wire is arranged inside the left transmission clip, a right spring wire is arranged inside the right transmission clip, a left insert for fixing the left transmission clip is installed on the surface of the left transmission clip, and a right insert for fixing the right transmission clip is installed on the surface of the right transmission clip.

[0013] Preferably, the handle assembly also includes a front cover snapped onto the front ends of the upper shell and the lower shell, and a rear cover snapped onto the rear ends of the upper shell and the lower shell, the front cover is provided with through holes for the left blade and the right blade to pass through, the control board is connected to a Type-C charging port fixed on the rear cover, and the rear cover is also equipped with a light guide column electrically connected to the control board.

[0014] Preferably, a battery electrically connected to the control panel is installed inside the lower shell, and the battery is wrapped with highland barley paper. The bottom of the lower shell is provided with sensing components, and the sensing components include touch bar 1 and touch bar 2, and both touch bar 1 and touch bar 2 are electrically connected to the battery.

[0015] Preferably, a left knife guard and a right knife guard that interlock with each other are installed between the handle assembly and the cutting assembly by bolts, the left blade and the right blade are connected by a limiting bolt, a strip hole is opened on the left blade, and the limiting bolt is installed inside the strip hole.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model adopts the design of the electric contact structure. When the device is turned on, the key switch first contacts the spring sheet, and the contact point on the spring sheet then contacts the contact point on the contact sheet, and then the control board is turned on, thereby controlling the motor to drive the blade to work, avoiding direct contact between the key switch and the control board, reducing damage to the control board, and thus increasing the service life of the bread knife;

[0018] 2. The utility model adopts a design in which the touch strips 1 and 2 as sensing components are installed on the bottom of the lower shell. The device can be turned on by simply touching the touch strips with fingers, which greatly reduces the contamination of the sensing components and reduces the risk of stains entering the interior of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 It is an exploded view of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the cutting assembly of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the control mechanism and the knife unloading assembly of the utility model;

[0023] Figure 5 It is a structural schematic diagram of the electric contact structure of the utility model.

[0024] Figure 6 It is a structural schematic diagram of the driving mechanism of the utility model;

[0025] Figure 7 It is a schematic structural diagram of the lower shell, inner liner, inner liner cover, touch strip one and touch strip two of the utility model.

[0026] In the figure: 100, knife handle assembly; 200, cutting assembly; 300, switch assembly; 400, knife unloading assembly; 1, upper shell; 2, key switch; 3, first spring; 4, key slider; 5, knife unloading bracket; 7, right knife unloading member; 8, right slider; 9, pressure plate; 10, left slider; 11, left knife unloading member; 12, second spring; 13, spring piece; 14, contact piece; 15, steel plate; 16, insert; 17, right insert; 18, right spring line; 19, left Insert; 20, left spring wire; 21, left transmission clamp; 22, turbine; 23, right transmission clamp; 24, turbine rod; 25, motor; 26, control board; 27, back cover; 28, battery; 29, highland barley paper; 31, liner; 32, liner cover; 34, lower shell; 35, touch bar 1; 36, touch bar 2; 37, front cover; 39, left knife guard; 40, left blade; 41, right blade; 42, right knife guard; 43, limit bolt; 44, light guide column. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-7 The utility model provides a technical solution: a bread knife, including a handle assembly 100, a cutting assembly 200 movably installed at the front end of the handle assembly 100, and a switch assembly 300 driving the cutting assembly 200 to move, the cutting assembly 200 includes a left blade 40 and a right blade 41 that move alternately, the left blade 40 and the right blade 41 are both made of stainless steel 420J2, that is, the left blade 40 and the right blade 41 move at the same time, but the directions of movement are opposite, the left blade 40 and the right blade 41 cut bread alternately, and the cutting efficiency is improved.

[0029] The total weight of this product: about 402g (main body weight: about 312g; blade weight: about 90g).

[0030] The handle assembly 100 includes an upper shell 1 and a lower shell 34 that are snap-connected together. The switch assembly 300 includes a control mechanism and a driving mechanism installed between the upper shell 1 and the lower shell 34. The control mechanism is used to control the start and stop of the driving mechanism, and the driving mechanism is used to drive the left blade 40 and the right blade 41 to move. A control board 26 is installed inside the lower shell 34, and the control mechanism and the driving mechanism are both electrically connected to the control board 26.

[0031] The driving mechanism includes an inner container 31 and a left transmission clamp 21 and a right transmission clamp 23 alternately mounted on the inner container 31, that is, the left transmission clamp 21 drives the left blade 40 to move, and the right transmission clamp 23 drives the right blade 41 to move. The lower end of the inner container 31 is buckled with an inner container cover 32, the left blade 40 is plugged and fixed on the left transmission clamp 21, and the right blade 41 is plugged and fixed on the right transmission clamp 23;

[0032] The control mechanism includes an electric contact structure electrically connected to the control board 26 and a knife unloading bracket 5 installed inside the upper shell 1. The electric contact structure is used to realize the conduction between the key switch 2 and the knife unloading bracket 5. A key slider 4 is slidably installed on the key slider 4. The key switch 2 is movably installed on the control board 26. The electric contact structure includes a steel plate 15. The spring piece 13 and the contact piece 14 are respectively inserted above the steel plate 15 through the feeler. The contact point on the spring piece 13 is aligned with the contact point on the contact piece 14. An insertion strip 16 is inserted below the steel plate 15. The spring piece 13 is connected to a first spring 3 that abuts against the key switch 2. The key switch 2 first contacts the spring piece 13, and the contact point on the spring piece 13 contacts the contact point on the contact piece 14, and then the control board 26 is connected, thereby controlling the motor 25 to drive the left blade 40 and the right blade 41 to work.

[0033] An eccentric shaft is connected between the left transmission clamp 21 and the right transmission clamp 23, and a turbine 22 is installed on the eccentric shaft. A motor 25 is installed inside the inner liner 31, and a worm 24 is connected to one end of the output shaft of the motor 25, and the worm 24 is meshed with the turbine 22. The motor 25 drives the worm 24 to rotate, the worm 24 drives the turbine 22 to rotate, and the turbine 22 drives the eccentric shaft to move eccentrically, that is, the left transmission clamp 21 and the right transmission clamp 23 are pushed to move forward and backward through the eccentric shaft.

[0034] The tool unloading assembly 400 includes a pressure plate 9 installed inside a tool unloading bracket 5, and a right tool unloading component 7 and a left tool unloading component 11 are movably installed on both sides of the tool unloading bracket 5. A right slider 8 is inserted into one side of the right tool unloading component 7, and a left slider 10 is inserted into one side of the left tool unloading component 11. The left slider 10 and the right slider 8 are respectively in contact with the two sides of the pressure plate 9.

[0035] A second spring 12 is connected between the inner liner 31 and the pressure plate 9, and the pressure plate 9 is pressed on the left blade 40 and the right blade 41. Pressing the right and left unloading parts 7 and 11 on both sides simultaneously pushes the left slider 10 and the right slider 8 to contact the pressure plate 9, and the pressure plate 9 moves downward to squeeze the second spring 12, and the second spring 12 can be used to realize the unloading of the blade.

[0036] A left spring wire 20 is arranged inside the left transmission clip 21, a right spring wire 18 is arranged inside the right transmission clip 23, a left insert 19 for fixing the left transmission clip 21 is installed on the surface of the left transmission clip 21, and a right insert 17 for fixing the right transmission clip 23 is installed on the surface of the right transmission clip 23.

[0037] The handle assembly 100 also includes a front cover 37 buckled on the front end of the upper shell 1 and the lower shell 34, and a rear cover 27 buckled on the rear end of the upper shell 1 and the lower shell 34. The front cover 37 is provided with a through hole for the left blade 40 and the right blade 41 to pass through, so that the left blade 40 and the right blade 41 can move horizontally in the through hole. The control board 26 is connected to a Type-C charging interface fixed on the rear cover 27. The rear cover 27 is also equipped with a light guide 44 electrically connected to the control board 26, and the light guide 44 serves as an indicator light. The parameters of the Type-C charging interface are 5V / 1A, the charging time is 2.5 to 3 hours, and the battery life of a full charge is 40-50 minutes.

[0038] When the device is turned on, the user holds the touch bar 1 35 and the touch bar 2 36 at the bottom of the handle assembly 100, pushes the key switch 2 and presses the power button of the key switch 2, and the machine starts to work. The indicator light turns green when working (the touch bar 1 35 and the touch bar 2 36 must be touched at the same time and all the time, and the power button cannot be released, otherwise the machine cannot be started.)

[0039] When the device is shut down, select any of the following two methods:

[0040] 1. Release any one of the touch bar 1 35 and the touch bar 2 36;

[0041] 2. Release the power button of key switch 2;

[0042] If any of the above conditions is met, the machine will automatically stop working.

[0043] While charging:

[0044] 1. During charging, the red indicator light flashes slowly like a breathing light;

[0045] 2. When fully charged, the green indicator light is always on;

[0046] Stall Tips:

[0047] When this product encounters greater resistance when cutting an object, the indicator light (red / green light) at the charging port on the back will flash alternately for a period of time, and the product will automatically stop working (this object is not suitable for cutting with this product).

[0048] Low battery reminder:

[0049] When the battery power of this product is too low, the charging indicator light on the back of the machine will turn red (the light will go out when you release the hand), and the product should be charged at this time.

[0050] High temperature tips:

[0051] When the product is in high temperature, the charging indicator light on the back of the machine will turn red and will continue to flash for a while, and the product will automatically stop working. You can restart the machine after the light stops flashing.

[0052] A battery 28 electrically connected to the control board 26 is also installed inside the lower shell 34, and the battery 28 is wrapped with highland barley paper 29. The bottom of the lower shell 34 is respectively provided with a sensing component, and the sensing component includes a touch bar 1 35 and a touch bar 2 36, and the touch bar 1 35 and the touch bar 2 36 are both electrically connected to the battery 28. The rated voltage of the battery 28 is 3.7V, the rated power is 20W, and the capacity of the battery 28 is 2000mAh.

[0053] A left knife guard 39 and a right knife guard 42 that interlock with each other are installed between the handle assembly 100 and the cutting assembly 200 by bolts. The left blade 40 and the right blade 41 are connected by a limiting bolt 43. A strip hole is opened on the left blade 40, and the limiting bolt 43 is installed inside the strip hole to ensure that the left blade 40 and the right blade 41 move in parallel.

[0054] This bread knife should not be used to cut sticky, hard, or frozen food, as it may damage the machine and the blade. During use, when your hand leaves the safety switch (leaves any sensing contact piece), that is, when you put the machine down, it will automatically shut down;

[0055] To avoid personal injury and machine damage, do not disassemble the blade during use. Do not use this product while charging. Please use soft cleaning tools such as soft cloth or dishwashing cotton and detergent that does not react to stainless steel to clean. Please wipe off water stains after cleaning.

[0056] When the device is turned on, the key switch 2 first contacts the spring sheet 13, and the contact on the spring sheet 13 contacts the contact on the contact sheet 14, and then the control board 26 is turned on. The control board 26 controls the motor 25 to run, and then drives the left blade 40 and the right blade 41 to alternately cut bread through the worm 24, the turbine 22, the left transmission clamp 21 and the right transmission clamp 23.

[0057] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bread knife, comprising a handle assembly (100), a cutting assembly (200) movably mounted at the front end of the handle assembly (100), and a switch assembly (300) for driving the cutting assembly (200) to move, characterized in that: The cutting assembly (200) comprises a left blade (40) and a right blade (41) that move alternately, the handle assembly (100) comprises an upper shell (1) and a lower shell (34) that are clamped together, the switch assembly (300) comprises a control mechanism and a drive mechanism installed between the upper shell (1) and the lower shell (34), and a control panel (26) is installed inside the lower shell (34); The driving mechanism comprises an inner container (31) and a left transmission clamp (21) and a right transmission clamp (23) which are alternately movably mounted on the inner container (31); an inner container cover (32) is buckled at the lower end of the inner container (31); the left blade (40) is plugged and fixed on the left transmission clamp (21); and the right blade (41) is plugged and fixed on the right transmission clamp (23); The control mechanism comprises an electric contact structure electrically connected to a control panel (26), a knife unloading bracket (5) mounted inside an upper shell (1), a key slider (4) slidably mounted on the knife unloading bracket (5), a key switch (2) movably mounted on the key slider (4), the electric contact structure comprises a steel plate (15), a spring sheet (13) and a contact sheet (14) are respectively inserted above the steel plate (15) through feelers, the contact points on the spring sheet (13) are aligned with the contact points on the contact sheet (14), an insertion strip (16) is inserted below the steel plate (15), and a first spring (3) is connected to the spring sheet (13) to abut against the key switch (2).

2. The bread knife according to claim 1, characterized in that: An eccentric shaft is connected between the left transmission clamp (21) and the right transmission clamp (23), a turbine (22) is mounted on the eccentric shaft, a motor (25) is mounted inside the inner tank (31), one end of the output shaft of the motor (25) is connected to a worm gear (24), and the worm gear (24) is meshed with the turbine (22).

3. The bread knife according to claim 1, characterized in that: The tool further comprises a tool unloading assembly (400), wherein the tool unloading assembly (400) comprises a pressure plate (9) installed inside a tool unloading bracket (5), and a right tool unloading member (7) and a left tool unloading member (11) are movably installed on both sides of the tool unloading bracket (5), a right slider (8) is inserted into one side of the right tool unloading member (7), and a left slider (10) is inserted into one side of the left tool unloading member (11), and the left slider (10) and the right slider (8) are respectively in contact with the two sides of the pressure plate (9).

4. The bread knife according to claim 3, characterized in that: A second spring (12) is connected between the inner container (31) and the pressure plate (9), and the pressure plate (9) is pressed onto the left blade (40) and the right blade (41).

5. The bread knife according to claim 1, characterized in that: A left spring wire (20) is arranged inside the left transmission clip (21), a right spring wire (18) is arranged inside the right transmission clip (23), a left inserting piece (19) for fixing the left transmission clip (21) is installed on the surface of the left transmission clip (21), and a right inserting piece (17) for fixing the right transmission clip (23) is installed on the surface of the right transmission clip (23).

6. The bread knife according to claim 1, characterized in that: The handle assembly (100) further comprises a front cover (37) snapped onto the front ends of the upper shell (1) and the lower shell (34), and a rear cover (27) snapped onto the rear ends of the upper shell (1) and the lower shell (34); the front cover (37) is provided with through holes for the left blade (40) and the right blade (41) to pass through; the control board (26) is connected to a Type-C charging interface fixed on the rear cover (27); and the rear cover (27) is also provided with a light guide column (44) electrically connected to the control board (26).

7. The bread knife according to claim 1, characterized in that: A battery (28) electrically connected to the control board (26) is also installed inside the lower shell (34), and the battery (28) is wrapped with highland barley paper (29). The bottom of the lower shell (34) is provided with a sensing component, and the sensing component includes a touch bar 1 (35) and a touch bar 2 (36), and the touch bar 1 (35) and the touch bar 2 (36) are both electrically connected to the battery (28).

8. The bread knife according to claim 1, characterized in that: A left knife guard (39) and a right knife guard (42) that are interlocked with each other are installed between the handle assembly (100) and the cutting assembly (200) by bolts, and the left blade (40) and the right blade (41) are connected by a limiting bolt (43). A strip hole is opened on the left blade (40), and the limiting bolt (43) is installed inside the strip hole.

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