Electric knife
By designing a heat dissipation structure including a heat dissipation port and a guide groove, the problem of unreasonable design of the existing electric knife heat dissipation port structure and position is solved, and better heat dissipation effect and larger hand-holding space are achieved.
Patent Information
- Application Number
- CN202421924069.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-08-09
AI Technical Summary
The structure and location of the existing electric knife are unreasonable, which makes it easy for hot air to enter the interior from the heat dissipation port, and the hands can easily block the heat dissipation port, affecting the heat dissipation effect.
A heat dissipation structure including a heat dissipation port and a guide groove is designed. The heat dissipation port is not directly located on the surface of the knife shell, but is arranged through the guide groove. The guide groove is located outside the knife shell, and the air outlet side is dislocated up and down with the knife shell to form a heat dissipation port to avoid hot air Enter the inside of the knife shell again and expand the hand-holding space.
It effectively improves the heat dissipation effect of the electric knife, prevents hot air from entering the knife shell again, expands the hand-holding space, and reduces the possibility of hand-hiding the heat dissipation structure.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model belongs to the field of knives, and in particular relates to an electric knife. Background Art
[0002] An electric knife generally includes a knife housing, a start button, a micro switch, a motor, a transmission mechanism and a blade. The start button is embedded in the knife housing, the micro switch, the motor and the transmission mechanism are installed inside the knife housing, and the blade is installed at the front end of the knife housing. When starting, the action spring of the micro switch is contacted when the start button is pressed, thereby triggering the micro switch. The micro switch triggers the motor in the knife housing to run, and the motor drives the blade to move through the transmission mechanism to achieve electric cutting. Heat is generated during the operation of the motor. If the heat cannot be dissipated in time, it will affect the normal use of the electric knife. Existing electric knives are provided with heat dissipation ports on the knife housing, but since the heat dissipation ports are usually narrow and long through holes 7 distributed on the surface of the knife housing, such as Figure 1 As shown, the unreasonable structure design makes it easy for the discharged hot air to enter the interior through the heat dissipation port. In addition, since the heat dissipation port is relatively far forward, the hand is easy to block the heat dissipation port when grasping, thus affecting the heat dissipation effect. Utility Model Content
[0003] The utility model aims to solve the problem that the heat dissipation port structure and position design of the electric knife in the prior art are unreasonable, which affects the heat dissipation effect, and to provide an electric knife with better heat dissipation effect.
[0004] In order to achieve the above purpose, the technical solution adopted in this application is:
[0005] An electric knife comprises a knife housing and an electric motor arranged inside the knife housing, wherein the electric motor has an air outlet, and a centrifugal fan blade is arranged inside the motor at the air outlet. A heat dissipation structure is arranged on the knife housing at a position corresponding to the air outlet, and the heat dissipation structure comprises a heat dissipation port and a guide groove, wherein the guide groove is located outside the knife housing, and the guide groove is composed of a guide groove bottom and side edges located on both sides of the guide groove bottom, wherein the guide groove bottom is lower than the outer wall of the knife housing, and the guide groove is misaligned with the knife housing up and down on the air outlet side to form a heat dissipation port.
[0006] More preferably, the depth of the guide groove gradually becomes shallower from the heat dissipation opening toward the back.
[0007] More preferably, the upper surface of the edge is consistent with the corresponding outer surface of the knife shell.
[0008] More preferably, the heat dissipation structure is composed of a plurality of groups of heat dissipation ports and guide grooves, and the guide grooves are arranged as a whole to form a structure that is narrow in the front and wide in the back.
[0009] More preferably, the plurality of heat dissipation ports are arranged in parallel along the direction of the air outlet of the motor.
[0010] More preferably, heat dissipation structures are symmetrically provided on the left and right sides of the blade housing.
[0011] More preferably, the knife housing comprises a left handle cover, a right handle cover and a handle back cover, which are assembled to form a mounting cavity, and the battery assembly is detachably connected to the knife housing.
[0012] More preferably, the battery assembly includes a battery connection cover, a battery protection plate, a battery back cover and a battery, the front end of the battery connection cover is detachably connected to the back cover of the handle, the battery back cover and the battery connection cover are connected to form a battery cavity for accommodating the battery, the battery protection plate is connected to the battery connection cover, the conductive connection clip at the front end of the battery protection plate extends out of the battery connection cover and cooperates with the conductive plug extending out of the mounting cavity, and the part of the conductive plug located in the mounting cavity is connected to the motor.
[0013] More preferably, a connecting card plate is provided on the left handle cover and the right handle cover, a connecting card slot is provided on the battery connecting cover, the connecting card plate falls into the connecting card slot to fix the battery assembly to the knife shell, a battery release button is provided on the knife shell, a lock hole is provided on the battery connecting cover, the battery release button and the lock hole are locked or unlocked to control the locking or unlocking of the battery assembly and the knife shell.
[0014] More preferably, a limiting protrusion is provided on the battery protection plate or the battery connection cover, and a limiting groove is provided on the rear cover of the knife handle. The limiting protrusion is inserted into the limiting groove and can move up and down in the limiting groove.
[0015] More preferably, the battery assembly also includes a battery front shell, which is fixed to the lower part of the battery connection cover, and the upper end of the battery front shell is connected to the left handle cover and the right handle cover, and a power display film is provided on the battery front shell.
[0016] The beneficial effects of the utility model are as follows: (1) The heat dissipation structure adopts the form of a combination of a heat dissipation port and a guide groove. The heat dissipation port is not directly located on the surface of the knife shell. The hot air from the heat dissipation port is discharged through the guide groove. The guide groove is only connected to the heat dissipation port to prevent the hot air from entering the knife shell again. The heat dissipation port does not occupy the gripping space. When gripping, the heat dissipation will not be affected by blocking the heat dissipation port, thereby improving the heat dissipation effect of the electric knife. (2) The connection design between the battery assembly and the knife shell is ingenious, which makes the heat dissipation structure move backward as a whole, expands the gripping space, and reduces the possibility of the hand blocking the heat dissipation structure and affecting the heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.
[0018] Figure 1 It is a schematic diagram of the structure of an electric knife in the prior art.
[0019] Figure 2 It is a schematic diagram of the structure of the electric knife of the utility model.
[0020] Figure 3 It is a schematic diagram of the structure in which the blade shell part and the battery assembly are separated.
[0021] Figure 4 It is a diagram of an electric knife explosion.
[0022] Figure 5 It is a schematic diagram of the structure of the knife shell.
[0023] Figure 6 yes Figure 5 A partial enlarged view of point A in the middle.
[0024] Figure 7 It is a schematic diagram of the coordination structure between the battery assembly and the conductive plug.
[0025] Figure 8 It is a partial structural schematic diagram of an electric knife with the left handle cover omitted.
[0026] Fig. 9 It is a schematic diagram of the assembly structure of the right handle cover and the handle rear cover.
[0027] Fig.10 yes Fig. 9 A partial enlarged view of point B in the middle.
[0028] Fig.11 yes Fig. 9 Partial view of the middle battery release button.
[0029] Fig.12 Schematic diagram of the battery release button structure.
[0030] Fig.13 It is a schematic diagram of the structure of the back cover of the handle.
[0031] Fig.14 It is a schematic diagram of the structure of the handle back cover and the battery release button.
[0032] Fig.15 It is a schematic diagram of the battery component decomposition structure.
[0033] In the figure: 1 knife shell, 101 left knife handle cover, 102 right knife handle cover, 103 knife handle back cover, 1031 limiting groove, 1032 plug installation hole, 1033 lock tongue through hole, 104 connecting card plate, 105 motor limiting groove, 2 battery assembly, 21 battery connection cover, 211 connection card slot, 212 lock hole, 213 battery back cover buckle, 214 limiting protrusion through hole, 22 battery protection plate, 221 conductive connection clip, 222 limiting protrusion, 23 battery back cover, 24 battery, 25 battery front shell, 26 power display film, 3 heat dissipation structure, 31 heat dissipation port, 32 guide groove, 321 guide groove bottom, 322 side ridge, 4 battery release button, 41 lock tongue, 42 operating part, 43 reset elastic arm, 5 conductive plug, 6 motor, 61 air outlet. DETAILED DESCRIPTION
[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0035] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0036] The electric knife of the utility model comprises a knife housing 1 and a motor 6 arranged inside the knife housing 1. The motor 6 has an air outlet 61. Figure 4 and Figure 8 The motor 6 is provided with centrifugal blades at the air outlet 61, and the structure of the motor 6 is the existing structure in the prior art. Figure 2 , Figure 3 , Figure 5 , Figure 6 and Fig.10The utility model is provided with a heat dissipation structure 3 on the knife shell 1 at the corresponding position of the air outlet 61. The heat dissipation structure 3 includes a heat dissipation port 31 and a guide groove 32. The guide groove 32 is located outside the knife shell 1. The guide groove 32 is composed of a guide groove bottom 321 and side edges 322 located on both sides of the guide groove bottom 321. The guide groove bottom 321 is lower than the outer wall of the knife shell 1. The guide groove 32 is displaced up and down with the knife shell 1 on the air outlet 61 side to form the heat dissipation port 31. The heat dissipation port (or heat dissipation through hole) of the traditional electric knife is parallel to the surface of the knife shell 1, while the heat dissipation port 31 of the utility model is in a vertical state relative to the surface of the knife shell 1 to avoid blocking the heat dissipation port 31 when grasping. The guide groove 32 guides the hot air to be discharged. The shell where the guide groove 32 is distributed is in a closed state. The hot air will not enter the inside of the knife shell 1 again from the guide groove 32, thereby improving the heat dissipation effect.
[0037] The depth of the guide groove 32 gradually decreases from the heat dissipation port 31 to the rear, and the guide groove 32 can guide the hot air discharged from the heat dissipation port 31 and reduce the possibility of external air entering the shell from the guide groove 32. The upper surface of the edge 322 is consistent with the outer surface of the corresponding knife shell 1. The guide groove 32 of the heat dissipation structure 3 is similar to being formed by machining downward on the surface of the complete knife shell 1. The guide groove 32 meets the exhaust requirements and has good consistency with the knife shell, which is more beautiful.
[0038] The heat dissipation structure 3 is composed of a plurality of heat dissipation ports 31 and guide grooves 32, and the guide grooves 32 are arranged as a whole to be narrow in front and wide in the back. The plurality of heat dissipation ports 31 are arranged in parallel along the direction of the air outlet 61 of the motor 6. The heat dissipation ports 31 are located slightly behind the air outlet 61 and are arranged in parallel along the direction of the air outlet 61, so that the hot air coming out of the air outlet 61 can quickly enter the heat dissipation ports 31 and be discharged. Since the air outlet 61 of the motor 6 is located on the left and right sides, in order to achieve the best heat dissipation effect, the heat dissipation structure 3 is symmetrically arranged on the left and right sides of the blade housing 1.
[0039] See also Figure 2 , Figure 3 , Figure 4 , Figure 8 The knife housing 1 comprises a left handle cover 101, a right handle cover 102 and a handle back cover 103. The left handle cover 101, the right handle cover 102 and the handle back cover 103 are assembled to form an installation cavity, and components such as the motor 6 are arranged in the installation cavity. The battery assembly 2 is detachably connected to the knife housing 1. The battery assembly 2 supplies power to the motor 6, and the battery assembly 2 is detachably connected to the knife housing 1 for easy replacement and maintenance. The left handle cover 101 and the right handle cover 102 are provided with a motor limiting groove 105. After the left handle cover 101 and the right handle cover 102 are assembled, the position of the motor 6 is limited to ensure that the air outlet 61 of the motor 6 corresponds to the heat dissipation outlet 31 of the heat dissipation structure 3.
[0040] See also Figure 7 and Fig.15The battery assembly 2 includes a battery connection cover 21, a battery protection plate 22, a battery back cover 23 and a battery 24. The front end of the battery connection cover 21 is detachably connected to the handle back cover 103. The battery back cover 23 is connected to the battery connection cover 21 to form a battery cavity for accommodating the battery. A battery back cover buckle 213 may be provided on the battery connection cover 21. A card slot is provided on the battery back cover 23 to facilitate the disassembly and connection of the battery back cover 23 and the battery connection cover 21. The battery 24 is installed on the battery protection plate 22. The battery protection plate 22 is connected to the battery connection cover 21. The conductive connection clip 221 at the front end of the battery protection plate 22 extends out of the battery connection cover 21 and cooperates with the conductive plug 5 extending out of the mounting cavity. The portion of the conductive plug 5 located in the mounting cavity is connected to the motor. Fig.13 and Fig.14 As shown, a plug-in installation hole 1032 is provided on the handle rear cover 103 , and the conductive plug-in 5 is installed in the plug-in installation hole 1032 .
[0041] See also Figure 5 , Figure 7 and Fig.15 The left handle cover 101 and the right handle cover 102 are provided with a connecting card plate 104, and the battery connecting cover 21 is provided with a connecting card slot 211. The connecting card plate 104 falls into the connecting card slot 211 to fix the battery assembly 2 and the knife housing 1. The knife housing 1 is provided with a battery release button 4, and the battery connecting cover 21 is provided with a lock hole 212. The battery release button 4 is locked or unlocked with the lock hole 212 to control the locking or unlocking of the battery assembly 2 and the knife housing 1. The structure of the battery release button 4 is shown in FIG. Fig.12 , including a locking tongue 41, an operating part 42 and a reset elastic arm 43. A locking tongue through hole 1033 is provided on the handle rear cover 103. After the locking tongue 41 of the battery release button 4 passes through the locking tongue through hole 1033, it cooperates with the locking hole 212 on the battery connection cover 21. When the locking tongue 41 is inserted into the locking hole 212 and is in a locked state, the battery assembly 2 cannot move downward, the connecting card plate 104 is in the connecting card slot 211, and the battery assembly 2 cannot be separated from the knife shell 1; when the operating part 42 is pushed forward, the locking tongue 41 is separated from the locking hole 212, and the restriction on the battery assembly 2 is released. The battery assembly 2 can be moved downward to separate the connecting card slot 211 from the connecting card plate 104, and the battery assembly 2 is separated from the knife shell 1. In the process of pushing the operating part 42 to separate the locking tongue 41 from the locking hole 212, the reset elastic arm 43 acts on the handle rear cover 103 to be compressed. When the operating part 42 is released, the battery release button 4 is reset under the action of the reset elastic arm 43.
[0042] The battery protection plate 22 or the battery connection cover 21 is provided with a limiting protrusion 222, and the handle rear cover 103 is provided with a limiting groove 1031. The limiting protrusion 222 is inserted into the limiting groove 1031 and can move up and down in the limiting groove 1031. When the connection card slot 211 is matched with the connection card plate 104, the limiting protrusion 222 is located above the limiting groove 1031. When the connection card slot 211 is separated from the connection card plate 104, the limiting protrusion 222 is located below the limiting groove 1031. At this time, due to the limiting of the limiting groove 1031 on the limiting protrusion 222, the battery assembly 2 cannot be moved down to be removed. The battery assembly 2 needs to be moved to the rear side to separate the limiting protrusion 222 from the limiting groove 1031 before the battery assembly 2 can be removed. The position of the battery assembly 2 moving downward is limited by the cooperation between the limiting protrusion 222 and the limiting groove 1031, which ensures that the connection slot 211 can be released from the connection card plate 104 after the battery assembly 2 moves downward, and prevents the battery assembly 2 from being directly separated from the knife shell 1, thereby improving safety. In this embodiment, the limiting protrusion 222 is provided on the battery protection plate 22, and a limiting protrusion through hole 214 is provided on the battery protection plate 22. The limiting protrusion 222 passes through the limiting protrusion through hole 214 and cooperates with the limiting groove 1031 provided on the handle rear cover 103. The limiting protrusion 222 and the limiting protrusion through hole 214 can be used to fix the battery protection plate 22 to the battery connection cover 21.
[0043] The battery assembly also includes a battery front shell 25, which is fixed to the lower part of the battery connection cover 21, and its upper end is connected to the left handle cover 101 and the right handle cover 102. The battery front shell 25 is provided with a power display film 26 to display the battery power.
[0044] In addition to improving the heat dissipation structure, the utility model also improves the battery assembly and the detachable connection method with the knife shell, so that the knife handle structure composed of the knife shell and the battery assembly is more compact, the proportion of the battery assembly is reduced, and the motor installed inside the knife shell is moved relatively to the rear of the knife handle, so that the heat dissipation structure corresponding to the position of the motor air outlet is moved backward, which expands the space for the hand grip, reduces the possibility of the hand grip blocking the heat dissipation outlet during operation, and further improves the heat dissipation effect.
[0045] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. An electric knife, comprising a knife housing and a motor arranged inside the knife housing, wherein the motor has an air outlet, a centrifugal fan blade is arranged inside the motor at the air outlet, and a heat dissipation structure is arranged on the knife housing at a position corresponding to the air outlet, characterized in that: The heat dissipation structure includes a heat dissipation port and a guide groove. The guide groove is located on the outside of the blade housing. The guide groove is composed of a guide groove bottom and side edges on both sides of the guide groove bottom. The guide groove bottom is lower than the outer wall of the blade housing. The guide groove is offset from the blade housing up and down on the air outlet side to form a heat dissipation port.
2. The electric knife according to claim 1, characterized in that: The depth of the guide groove gradually becomes shallower from the heat dissipation opening toward the back.
3. The electric knife according to claim 1, characterized in that: The upper surface of the edge is consistent with the corresponding outer surface of the knife shell.
4. The electric knife according to claim 1, characterized in that: The heat dissipation structure is composed of a plurality of heat dissipation ports and guide grooves, and the guide grooves are arranged as a whole to present a structure that is narrow in the front and wide in the back.
5. The electric knife according to claim 4, characterized in that: A plurality of heat dissipation vents are arranged in parallel along the air outlet direction of the motor.
6. The electric knife according to any one of claims 1 to 5, characterized in that: The knife housing comprises a left handle cover, a right handle cover and a handle back cover. The left handle cover, the right handle cover and the handle back cover are assembled to form an installation cavity. The battery assembly is detachably connected to the knife housing.
7. The electric knife according to claim 6, characterized in that: The battery assembly includes a battery connection cover, a battery protection plate, a battery back cover and a battery. The front end of the battery connection cover is detachably connected to the back cover of the knife handle. The battery back cover and the battery connection cover are connected to form a battery cavity for accommodating the battery. The battery protection plate is connected to the battery connection cover. The conductive connection clip at the front end of the battery protection plate extends out of the battery connection cover and cooperates with the conductive plug extending out of the mounting cavity. The part of the conductive plug located in the mounting cavity is connected to the motor.
8. The electric knife according to claim 7, characterized in that: A connecting card plate is provided on the left handle cover and the right handle cover, a connecting card slot is provided on the battery connecting cover, the connecting card plate falls into the connecting card slot to fix the battery assembly to the knife shell, a battery release button is provided on the knife shell, a lock hole is provided on the battery connecting cover, the battery release button and the lock hole are locked or unlocked to control the locking or unlocking of the battery assembly and the knife shell.
9. The electric knife according to claim 8, characterized in that: The battery protection plate or the battery connection cover is provided with a limiting protrusion, and the rear cover of the knife handle is provided with a limiting groove. The limiting protrusion is inserted into the limiting groove and can move up and down in the limiting groove.
10. The electric knife according to claim 6, characterized in that: The battery assembly also includes a battery front shell, which is fixed to the lower part of the battery connection cover, and the upper end of the battery front shell is connected to the left handle cover and the right handle cover, and a power display film is provided on the battery front shell.