Stirring driving mechanism and cooking machine thereof

Abstract

The utility model discloses a stirring driving mechanism which comprises a stirring assembly, the stirring assembly comprises an inner shaft, an outer shaft and an elastic piece, the outer shaft is provided with a vertically-arranged central through hole, the inner shaft can vertically penetrate through the central through hole in an up-and-down floating mode and is connected with the outer shaft, the elastic piece is arranged outside the inner shaft in a sleeving mode and abuts against the outer shaft, and the elastic piece is connected with the outer shaft in a sleeving mode. The pre-tightening force of the elastic piece always has the trend of pushing the inner shaft to move downwards. The driving assembly is arranged outside the stirring assembly, the output end of the driving assembly is connected with the upper end of the outer shaft, and the driving assembly can drive the inner shaft to rotate through the outer shaft. The stirring driving mechanism disclosed by the utility model can ensure that the stirrer is in good contact with the bottom of a pot, improves the stirring effect, and can prevent the driving assembly from stalling at the same time. The utility model further provides the cooking machine.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking machines, in particular to a stirring drive mechanism and a cooking machine thereof. Background Art

[0002] In the field of cooking, the household cooking machines currently on the market basically use an induction cooker with an electric spatula for stir-frying. They have low power and cannot take into account both ease of use and the quality of dishes.

[0003] Due to processing errors of related parts such as the pot, lid or stirrer, when the lid and pot body of the automatic cooking machine are closed, the distance between the stirrer and the bottom of the pot will be too small or too large, affecting the effect of the stirrer stirring dishes. When the distance is too small, it will also affect the service life of the pot body, stirrer and drive motor. Summary of the invention

[0004] The utility model aims to solve at least one of the problems existing in the existing related technologies to a certain extent. To this end, the utility model proposes a stirring drive mechanism that can ensure good contact between the stirrer and the bottom of the pot, improve the stirring effect, and avoid the drive component from being blocked. The utility model also provides a cooking machine.

[0005] According to the above-mentioned stirring drive mechanism, it is realized by the following technical solution:

[0006] A stirring drive mechanism comprises: a stirring component, comprising an inner shaft, an outer shaft and an elastic member, the outer shaft is provided with a vertically arranged central through hole, the inner shaft is vertically inserted into the central through hole and can float up and down and is connected to the outer shaft, the elastic member is sleeved outside the inner shaft and abuts against the outer shaft, and the preload force of the elastic member always has a tendency to push the inner shaft to move downward; and a driving component, which is arranged outside the stirring component and whose output end is connected to the upper end of the outer shaft, and the driving component can drive the inner shaft to rotate through the outer shaft.

[0007] In some embodiments, a guide groove connected to the central through hole is opened at the lower end of the outer side wall of the outer shaft, and a positioning portion extending outward is provided at a position of the inner shaft corresponding to the guide groove, and the positioning portion can be inserted into the guide groove so as to be movable up and down.

[0008] In some embodiments, the positioning portion is a positioning protrusion integrally formed with the inner shaft; or the stirring assembly also includes a connecting rod constituting the positioning portion, and a transversely arranged axial hole is provided at a position of the inner shaft corresponding to the guide groove, the connecting rod is transversely inserted into the axial hole, and its free end can be inserted into the guide groove movably up and down.

[0009] In some embodiments, a first bearing and / or a sleeve is provided between the inner shaft and the outer shaft, and a limiting portion is circumferentially protruded on the upper end of the sleeve and extends outward to the top of the outer shaft, and the limiting portion abuts against the top of the outer shaft.

[0010] In some embodiments, a boss extending outward and located below the outer shaft is circumferentially provided on the outer side wall of the inner shaft, and the elastic member is sandwiched between the top of the boss and the bottom of the outer shaft.

[0011] In some embodiments, a transmission assembly is further included, and the output end of the drive assembly is transmission-connected to the upper end of the outer shaft through the transmission assembly.

[0012] In some embodiments, the transmission assembly includes a meshing driving wheel and a driven wheel, the driving wheel is sleeved outside the output end of the driving assembly and connected to the output end, and the driven wheel is sleeved outside the upper end of the outer shaft and connected to the outer shaft.

[0013] In some embodiments, a fixing seat is further included, wherein the fixing seat is provided with an installation cavity with upper and lower ends opened, and the stirring component is rotatably vertically inserted into the installation cavity, and its upper and lower ends protrude out of the top and bottom of the fixing seat respectively.

[0014] In some embodiments, at least one second bearing is provided between the cavity wall of the mounting cavity and the outer shaft.

[0015] According to the cooking machine provided above, it is realized by the following technical solution:

[0016] A cooking machine comprises: a pot cover assembly, a mounting hole is provided at the center of the pot cover assembly; and a stirring drive mechanism as described above, wherein the drive assembly and the outer shaft are arranged above the mounting hole, and the lower end of the inner shaft vertically penetrates the mounting hole and extends to below the pot cover assembly.

[0017] In some embodiments, a sealing structure is provided between the inner shaft and the hole wall of the mounting hole; and / or a connecting arm having a cavity is connected to the top of the pot cover assembly, and an opening connected to the cavity is provided at a position at the bottom of the connecting arm corresponding to the mounting hole, the upper ends of the drive assembly, the outer shaft and the inner shaft are all installed inside the cavity, and the lower end of the inner shaft is vertically penetrated through the opening and the mounting hole, respectively.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] 1. The stirring drive mechanism of the utility model is simple in structure, by sleeved outer shaft outside inner shaft and connected with output end of driving assembly and inner shaft respectively, and the inner shaft is designed to float up and down relative to the outer shaft, which can not only ensure good contact between the stirrer installed at the lower end of the inner shaft and the bottom of the pot, thus improving the stirring effect, but also can control the friction between the stirrer and the bottom of the pot within a certain range, effectively avoiding the stalling of driving assembly, thereby improving the stirring effect of the stirrer;

[0020] 2. By arranging the driving component outside the stirring component, and connecting the output end of the driving component with the upper end of the outer shaft of the stirring component through the transmission component, the driving component can be isolated from the stirring component while driving the stirring component to rotate, thereby preventing the internal grease of the driving component from liquefying at high temperature and flowing downward along the stirring component into the pot body, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the stirring drive mechanism in the embodiment of the utility model;

[0022] Figure 2 is a cross-sectional view of the stirring drive mechanism in the embodiment of the utility model;

[0023] Figure 3 It is a schematic diagram of the structure of the stirring assembly in the embodiment of the utility model;

[0024] Figure 4 is a cross-sectional view of a stirring assembly in an embodiment of the utility model;

[0025] Figure 5 is a cross-sectional view of another stirring assembly in an embodiment of the utility model;

[0026] Figure 6 It is a structural schematic diagram of a fixing seat in an embodiment of the utility model;

[0027] Figure 7 is a cross-sectional view of a fixing seat in an embodiment of the utility model;

[0028] Figure 8 This is a schematic diagram of the structure of a cooking machine in an embodiment of the utility model;

[0029] Fig. 9 It is a cross-sectional view of a cooking machine in an embodiment of the utility model.

[0030] In the figure: 11-inner shaft, 111-positioning protrusion, 113-annular groove, 114-boss, 12-outer shaft, 121-center through hole, 122-guide groove, 13-connecting rod, 14-second bearing, 15-sleeve, 151-limiting part, 16-elastic member; 2-driving assembly, 21-output end; 41-driving wheel, 42-driven wheel; 5-fixed seat, 51-transverse mounting plate, 52-vertical sleeve, 521-mounting cavity, 522-top opening, 523-bottom opening; 6-pot cover assembly, 61-mounting hole, 62-sealing structure; 7-connecting arm, 70-cavity, 71-bottom shell, 72-cover plate. DETAILED DESCRIPTION

[0031] The following examples illustrate the present invention, but the present invention is not limited by these examples. Modifications to the specific implementation of the present invention or equivalent replacement of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed for protection in the present invention.

[0032] Example 1

[0033] refer to Figure 1-4 The present embodiment provides a stirring drive mechanism, comprising a stirring assembly (not shown in the figure) and a driving assembly 2, wherein the stirring assembly comprises an inner shaft 11, an outer shaft 12 and an agitator (not shown in the figure), the outer shaft 12 is provided with a central through hole 121 which is arranged vertically and passes through the upper and lower end surfaces thereof, the inner shaft 11 is vertically penetrated in the central through hole 121 and is connected to the outer shaft 12 so as to float up and down, and the agitator is detachably connected to the lower end of the inner shaft 11, so that the outer shaft 12 can rotate while synchronously driving the inner shaft 11 to rotate, and the inner shaft 11 can drive the agitator to float and rise relative to the outer shaft 12, so that the agitator is in good contact with the bottom of the pot, preventing the agitator from having an interference fit with the bottom of the pot, and achieving controllable friction between the agitator and the bottom of the pot within a certain range, effectively avoiding the drive assembly from being blocked, and thereby improving the effect of the agitator in stirring dishes.

[0034] Furthermore, the stirring assembly also includes an elastic member 16, which can be a spring, a disc spring or a diaphragm. The elastic member 16 is mounted outside the inner shaft 11 and abuts against the outer shaft 12. The preload force of the elastic member 16 always has a tendency to push the inner shaft 11 to move downward. In this embodiment, a boss 114 extending outward and located below the outer shaft 12 is provided on the outer peripheral wall of the inner shaft 11 in the circumferential direction. The boss 114 is integrally formed with the inner shaft 11. The elastic member 16 is sandwiched between the top of the boss 114 and the bottom of the outer shaft 12. Through the action of the elastic member 16, the inner shaft has a downward tendency relative to the outer shaft, thereby ensuring that the stirrer installed on the inner shaft 11 can float up and down.

[0035] The driving assembly 2 is arranged outside the upper end of the stirring assembly and its output end 21 is connected to the upper end of the outer shaft 12 . The driving assembly 2 can drive the inner shaft 11 to rotate through the outer shaft 12 .

[0036] See also Figure 2-3 , further, at least one guide groove 122 connected to the central through hole 121 is provided at the lower end of the outer wall of the outer shaft 12, the upper end of the guide groove 122 is closed, and the lower end is open. Of course, the lower end of the guide groove 122 can also be designed to be closed. In this embodiment, the number of the guide grooves 122 is two, and the two guide grooves 122 are arranged oppositely and located on the two opposite outer sides of the central through hole 121. Of course, the number of the guide grooves 122 can also be three or four. A positioning portion (not shown in the figure) extending outward is provided at the position of the inner shaft 11 corresponding to the guide groove 122, and the positioning portion can be inserted into the guide groove 122 in an upward and downward manner. Therefore, through the cooperation between the positioning portion and the guide groove 122, on the one hand, it plays a guiding and limiting role in the upward and downward floating of the inner shaft 11, and on the other hand, when the driving assembly 2 drives the outer shaft 12 to rotate, the outer shaft 12 can synchronously drive the inner shaft 11 to rotate through the positioning portion.

[0037] Furthermore, the specific structure of the positioning part includes but is not limited to any of the following:

[0038] The first one, reference Figure 3-4 The stirring assembly also includes a connecting rod 13 constituting a positioning portion. A transversely arranged axial hole (not shown in the figure) is provided at a position of the inner shaft 11 corresponding to the guide groove 122. The connecting rod 13 is transversely inserted into the axial hole, and its free end can be inserted into the guide groove 122 so as to be movable up and down. In the present embodiment, the connecting rod 13 is preferably a pin. Of course, a key or a spline can also be used instead of the pin.

[0039] The second one, reference Figure 5 The positioning portion is a positioning protrusion 111 integrally formed with the inner shaft 11 .

[0040] refer to Figure 4 Or 5, in this embodiment, the stirring assembly also includes a first bearing (not shown in the figure) and a sleeve 15, and a first bearing and a sleeve 15 are provided between the inner shaft 11 and the outer shaft 12, wherein the first bearing is preferably a nylon bearing, which is located between the sleeve 15 and the inner shaft 11, and a stopper 151 extending outward to the top of the outer shaft 12 is convexly provided at the upper end of the sleeve 15, and the stopper 151 is abutted against the top of the outer shaft 12, so that the stirrer assembly is suitable for high-demand working conditions. In other embodiments, the first bearing or the sleeve 15 can be omitted. When the first bearing is omitted, the inner shaft 11 and the outer shaft 12 are directly slidably connected, which is suitable for working conditions with low requirements.

[0041] Specifically, an annular groove 113 suitable for accommodating the first bearing is formed between the inner shaft 11 and the outer shaft 12 . In this embodiment, the annular groove 113 is formed by a partial outer wall of the inner shaft 11 being integrally recessed inwardly, and the first bearing is embedded in the annular groove 113 .

[0042] Example 2

[0043] refer to Figure 1-2 The difference between this embodiment and embodiment 1 is that the stirring drive mechanism also includes a transmission component, the driving component 2 is arranged outside the upper end of the stirring component, and the output end 21 of the driving component is connected to the upper end of the outer shaft 12 through the transmission component. In this way, the stirring component can be driven to rotate while the driving component can be isolated from the stirring component to prevent the grease inside the driving component from liquefying at high temperature and flowing downward along the stirring component into the pot body, thereby improving the user experience effect. Thirdly, compared with installing the driving component on the top of the stirring component, it is beneficial to shorten the height of the driving stirring mechanism in the vertical direction.

[0044] Specifically, the driving assembly is arranged horizontally, and the transmission assembly includes a meshing driving wheel 41 and a driven wheel 42, the driving wheel 41 is sleeved outside the output end 21 of the driving assembly 2 and connected to the output end 21, and the driven wheel 42 is sleeved outside the upper end of the outer shaft 12 and connected to the outer shaft 12. Of course, a connecting rod structure can also be used to replace the driving and driven wheels; or the transmission assembly can be omitted so that the output end of the driving assembly is directly connected to the upper end of the outer shaft.

[0045] Example 3

[0046] refer to Figure 1-2 6-7, the difference between this embodiment and embodiment 1 or 2 is that the stirring drive mechanism further includes a fixed seat 5, the fixed seat 5 is provided with a mounting cavity 521 with upper and lower ends opening, the upper end opening of the mounting cavity 521 is a top opening 522, and the lower end opening is a bottom opening 523. The stirring component is rotatably vertically penetrated in the mounting cavity 521, and its upper and lower ends protrude from the top and bottom of the fixed seat 5 respectively.

[0047] Specifically, the fixing seat 5 includes a transverse mounting plate 51 and a vertical sleeve 52. The transverse mounting plate 51 is in an "L" shape, one end of which is used to mount or support the drive assembly 2, and the other end is integrally formed with a vertical sleeve 52 extending upward at the top. The vertical sleeve 52 has an installation cavity 521, and the upper end of the installation cavity 521 is open to form a top opening 522. A bottom opening 523 is opened at the position of the transverse mounting plate 51 corresponding to the installation cavity, and the diameter of the bottom opening 523 is smaller than the diameter of the installation cavity 521. The upper ends of the inner shaft 11 and the outer shaft 12 both extend above the top opening 522, and the driven wheel 42 is arranged directly above the vertical sleeve 52 and connected to the upper end of the outer shaft 12; the lower end of the inner shaft 11 extends from top to bottom through the bottom opening 523 to below the bottom opening 523. In this embodiment, the size of the positioning protrusion 111 on the inner shaft 11 is smaller than the size of the bottom opening 523, so that the positioning protrusion 111 can move up and down through the bottom opening when driven by the inner shaft 11.

[0048] Furthermore, at least one second bearing 14 is provided between the cavity wall of the installation cavity 521 and the outer shaft 12, and is sleeved on the outer side of the outer shaft 12. In this embodiment, there are two second bearings 14, and the two second bearings 14 are sleeved on the upper and lower ends of the outer shaft 12, respectively, to ensure the stable operation of the outer shaft 12. Under low-requirement working conditions, only one second bearing 14 may be provided, or the second bearing 14 may be removed and sliding friction may be used.

[0049] Example 4

[0050] refer to Figure 8-9 This embodiment provides a cooking machine, which includes a pot cover assembly 6 and a stirring drive mechanism as described in any one of embodiments 1-3, wherein a mounting hole 61 for the inner shaft 12 to pass through is opened at the center of the pot cover assembly 6. The drive assembly 2 and the outer shaft 12 are arranged above the mounting hole 61, and the lower end of the inner shaft 11 is vertically penetrated through the mounting hole 61 and extends to the bottom of the pot cover assembly 6.

[0051] When the lid assembly 6 of the cooking machine is closed to the pot body, since the inner shaft 11 can float up and down relative to the outer shaft 12, it can ensure that the agitator installed at the lower end of the inner shaft 11 is in good contact with the bottom of the pot, thereby improving the stirring effect. At the same time, the friction between the agitator and the bottom of the pot can be controlled within a certain range to avoid the drive assembly 2 from being blocked, which is beneficial to increasing the service life of the pot body, the agitator and the drive assembly 2.

[0052] In this embodiment, a sealing structure 62 is provided between the inner shaft 11 and the hole wall of the mounting hole 61. The sealing structure 62 is preferably an oil seal to ensure that the upper and lower ends of the inner shaft 11 are isolated. When the inner shaft 11 rotates, the oil seal can achieve a good protective effect to prevent the high-temperature steam in the pot body from passing through the mounting hole 61 to the fixed seat, and at the same time prevent the grease inside the drive component 2 from liquefying at high temperature and flowing into the pot body.

[0053] Furthermore, the cooking machine further comprises a connecting arm 7 having a cavity 70, the connecting arm 7 being mounted on the top of the pot cover assembly 6, the connecting arm 7 comprising a bottom shell 71 and a cover plate 72, the bottom shell 71 being fixedly mounted on the top of the pot cover assembly 6, the cover plate 72 being detachably mounted on the top of the bottom shell 71, and a cavity 70 being formed between the bottom shell 71 and the cover plate 72. An opening (not shown in the figure) communicating with the cavity 70 is provided at a position corresponding to the mounting hole 61 at the bottom of the bottom shell 71 of the connecting arm 7, the upper ends of the driving assembly 2, the outer shaft 12 and the inner shaft 11 are all mounted inside the cavity 70, and the lower end of the inner shaft 11 is vertically penetrated in the opening and the mounting hole 61, respectively, so as to realize that the entire driving assembly 2 and the upper end of the stirring assembly are completely hidden inside the connecting arm 7, and the driving assembly 2 is protected from oil pollution and high-temperature steam interference.

[0054] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A stirring drive mechanism, characterized in that: include: A stirring assembly, comprising an inner shaft (11), an outer shaft (12) and an elastic member (16), wherein the outer shaft (12) is provided with a vertically arranged central through hole (121), the inner shaft (11) is vertically passed through the central through hole (121) in a manner that it can float up and down and is connected to the outer shaft (12), the elastic member (16) is sleeved outside the inner shaft (11) and abuts against the outer shaft (12), and the preload force of the elastic member (16) always has a tendency to push the inner shaft (11) to move downward; and A driving component (2) is arranged outside the stirring component and its output end (21) is connected to the upper end of the outer shaft (12). The driving component (2) can drive the inner shaft (11) to rotate through the outer shaft (12).

2. A stirring drive mechanism according to claim 1, characterized in that: A guide groove (122) connected to the central through hole (121) is provided at the lower end of the outer side wall of the outer shaft (12), and a positioning portion extending outward is provided at a position of the inner shaft (11) corresponding to the guide groove (122), and the positioning portion is inserted into the guide groove (122) so as to be movable up and down.

3. A stirring drive mechanism according to claim 2, characterized in that: The positioning portion is a positioning protrusion (111) formed integrally with the inner shaft (11); or The stirring assembly also includes a connecting rod (13) constituting the positioning portion, and a transversely arranged axial hole is provided at a position of the inner shaft (11) corresponding to the guide groove (122). The connecting rod (13) is transversely inserted into the axial hole, and a free end thereof is inserted into the guide groove (122) so as to be movable up and down.

4. A stirring drive mechanism according to claim 1, characterized in that: A first bearing and / or a sleeve (15) is provided between the inner shaft (11) and the outer shaft (12); a limiting portion (151) is convexly provided on the upper end of the sleeve (15) and extends outward to the top of the outer shaft (12); and the limiting portion (151) is in contact with the top of the outer shaft (12).

5. A stirring drive mechanism according to claim 1, characterized in that: A boss (114) extending outward and located below the outer shaft (12) is provided on the circumference of the outer wall of the inner shaft (11), and the elastic member (16) is sandwiched between the top of the boss (114) and the bottom of the outer shaft (12).

6. A stirring drive mechanism according to claim 1, characterized in that: It also comprises a transmission assembly, wherein the output end (21) of the driving assembly (2) is transmission-connected to the upper end of the outer shaft (12) via the transmission assembly.

7. A stirring drive mechanism according to claim 6, characterized in that: The transmission assembly comprises a meshing driving wheel (41) and a driven wheel (42), wherein the driving wheel (41) is sleeved outside the output end (21) of the driving assembly (2) and connected to the output end (21), and the driven wheel (42) is sleeved outside the upper end of the outer shaft (12) and connected to the outer shaft (12).

8. A stirring drive mechanism according to any one of claims 1 to 7, characterized in that: It also comprises a fixing seat (5), wherein the fixing seat (5) is provided with a mounting cavity (521) with upper and lower ends being open, and the stirring assembly is rotatably arranged vertically in the mounting cavity (521), and its upper and lower ends protrude from the top and bottom of the fixing seat (5) respectively.

9. A stirring drive mechanism according to claim 8, characterized in that: At least one second bearing (14) is provided between the cavity wall of the installation cavity (521) and the outer shaft (12).

10. A cooking machine, characterized in that: include: A pot cover assembly (6), wherein a mounting hole (61) is provided at the center of the pot cover assembly (6); as well as A stirring drive mechanism according to any one of claims 1 to 9, wherein the drive assembly (2) and the outer shaft (12) are arranged above the mounting hole (61), and the lower end of the inner shaft (11) vertically penetrates the mounting hole (61) and extends to below the pot cover assembly (6).

11. A cooking machine according to claim 10, characterized in that: A sealing structure (62) is provided between the inner shaft (11) and the wall of the mounting hole (61); and / or A connecting arm (7) having a cavity (70) is connected to the top of the pot cover assembly (6); an opening communicating with the cavity (70) is provided at a position corresponding to the mounting hole (61) at the bottom of the connecting arm (7); the upper ends of the driving assembly (2), the outer shaft (12) and the inner shaft (11) are all mounted inside the cavity (70); and the lower end of the inner shaft (11) is vertically penetrated through the opening and the mounting hole (61), respectively.

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