Double-blade forward and reverse stirring blade mechanism

Abstract

The utility model discloses a double-blade forward and reverse stirring blade mechanism which comprises an upper stirring blade, a lower stirring blade and a planetary gear assembly, the planetary gear assembly comprises a sun gear, a planetary gear and a gear ring, the upper stirring blade and the sun gear are oppositely positioned in the circumferential direction, and the lower stirring blade and the gear ring are oppositely positioned in the circumferential direction. The gear ring is coaxially sleeved outside the sun gear, the planetary gear is arranged between the gear ring and the sun gear, the planetary gear is connected with the gear ring and the sun gear in a meshed mode, and the planetary gear is arranged in a fixed-axis rotating mode.

Description

Technical Field

[0001] The utility model relates to the field of stirring devices, in particular to a double-blade forward and reverse stirring blade mechanism. Background Art

[0002] At present, stirring devices, such as blenders and wall breakers, are provided with stirring blades, which are driven to rotate by a motor to stir and cut food mixed with water in a stirring chamber of the stirring device, such as beans or fruits. Stirring devices on the market usually have one stirring blade, which rotates in one direction, while some stirring devices have two stirring blades on the same rotating shaft. Although the stirring and cutting range is increased, since the two stirring blades rotate in the same direction, the liquid in the stirring chamber still flows more orderly (i.e., the turbulence effect is not good), and the food mixed in the liquid is not easy to fully contact with the stirring blade, resulting in low stirring and cutting efficiency and poor chopping effect. Therefore, it is necessary to improve the stirring blade mechanism of the prior art. Summary of the invention

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a double-blade forward and reverse stirring knife mechanism, which is beneficial to improving the stirring and cutting efficiency and enhancing the chopping effect.

[0004] The purpose of the utility model is achieved through the following technical solutions.

[0005] The double-blade forward and reverse stirring blade mechanism disclosed in the utility model comprises an upper stirring blade, a lower stirring blade and a planetary gear assembly, wherein the planetary gear assembly comprises a sun gear, a planetary gear and a gear ring, wherein the upper stirring blade is circumferentially positioned relative to the sun gear, the lower stirring blade is circumferentially positioned relative to the gear ring, the gear ring is coaxially sleeved outside the sun gear, the planetary gear is arranged between the gear ring and the sun gear, the planetary gear is meshedly connected with the gear ring and the sun gear, and the planetary gear is arranged for fixed-axis rotation.

[0006] Preferably, the double-blade forward and reverse stirring knife mechanism disclosed in the utility model also includes a rotating shaft and a rotating sleeve, the sun gear is adapted to be mounted on the rotating shaft, the rotating shaft and the sun gear are circumferentially positioned relative to each other, the upper stirring knife is mounted on the upper end of the rotating shaft, the rotating sleeve is coaxially mounted outside the rotating shaft, a neck sleeve portion is formed on the upper part of the gear ring, the neck sleeve portion is adapted to be mounted outside the lower end portion of the rotating sleeve, the neck sleeve portion and the rotating sleeve are circumferentially positioned relative to each other, and the lower stirring knife is mounted on the upper end of the rotating sleeve.

[0007] Preferably, the neck sleeve portion is an inner polygonal structure.

[0008] Preferably, the planetary gear assembly includes a planetary gear shaft, a lower bracket and an upper bracket, the planetary gear is axially positioned between the lower bracket and the upper bracket, the planetary gear shaft is coaxially installed in the corresponding planetary gear, the upper end of the planetary gear shaft is adapted to be plugged into the upper bracket, and the lower end of the planetary gear shaft is adapted to be plugged into the upper bracket.

[0009] Preferably, a chassis is provided on the lower side of the planetary gear assembly, and the planetary gear assembly comprises a first fixing screw, the first fixing screw passes through the lower bracket and the upper bracket, and the first fixing screw is screwed to the chassis.

[0010] Preferably, a gear box shell is provided on the outer side of the planetary gear assembly, the gear box shell is fixedly connected to the chassis, and a bushing is adapted between the inner wall of the gear box shell and the neck sleeve portion.

[0011] Preferably, the gear ring is formed with a step portion, the inner end of the step portion is integrally connected with the lower end of the neck sleeve portion, the lower end of the bushing is formed with a flange portion, and the flange portion is adapted to be arranged between the step portion and the inner wall of the gear box housing.

[0012] Preferably, the double-blade forward and reverse stirring blade mechanism disclosed in the utility model also includes an outer shell, the gear box shell is arranged inside the outer shell, the upper part of the rotating sleeve passes through the outer shell, an outer seal is provided between the inner wall of the outer shell and the outer wall of the rotating sleeve, and an inner seal is provided between the inner wall of the rotating sleeve and the rotating shaft.

[0013] Preferably, a mounting ear is formed on the outside of the gear box shell, and a second fixing screw is threadedly installed on the lower part of the shell, and the second fixing screw passes through the chassis and the mounting ear.

[0014] Preferably, the upper stirring blade is bent upward, and the lower stirring blade is bent downward.

[0015] Compared with the prior art, the utility model has the following beneficial effects: by arranging an upper stirring blade, a lower stirring blade and a planetary gear assembly, the planetary gear assembly includes a sun gear, a planetary gear and a gear ring, the upper stirring blade and the sun gear are positioned relative to each other in the circumferential direction, the lower stirring blade and the gear ring are positioned relative to each other in the circumferential direction, the gear ring is coaxially sleeved outside the sun gear, the planetary gear is arranged between the gear ring and the sun gear, the planetary gear is meshed with the gear ring and the sun gear, the planetary gear is arranged for fixed-axis rotation, so that the upper stirring blade and the lower stirring blade rotate in opposite directions, which is beneficial to improving the stirring and cutting efficiency and enhancing the chopping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the double-blade forward and reverse stirring knife mechanism of the utility model.

[0017] Figure 2 It is a schematic cross-sectional structure diagram of the double-blade forward and reverse stirring blade mechanism of the utility model.

[0018] Figure 3 It is an exploded schematic diagram of the double-blade forward and reverse stirring blade mechanism of the utility model.

[0019] Figure 4 It is a schematic cross-sectional structure diagram of the planetary gear assembly of the present utility model.

[0020] Figure 5 This is a three-dimensional structural schematic diagram of a planetary gear assembly with the ring gear removed according to the present invention.

[0021] Figure 6 It is a bottom-up stereoscopic structural schematic diagram of the gear ring of the present invention.

[0022] Figure 7 It is a three-dimensional structural schematic diagram of the bushing of the utility model.

[0023] Figure 8 It is a top view of the three-dimensional structure of the gear box shell of the utility model.

[0024] Explanation of reference numerals: upper stirring blade 1; lower stirring blade 2; rotating shaft 3; groove pattern 301; locking blade nut 31; inner bearing 32; inner seal 33; rotating sleeve 4; outer bearing 41; outer seal 42; planetary gear assembly 5; sun gear 51; planetary gear 52; gear ring 53; step portion 531; convex ring portion 5311; neck sleeve portion 532; planetary gear shaft 54; lower bracket 55; upper bracket 56; positioning lower boss 561; first fixing screw 57; gear box shell 6; mounting ear 61; outer shell 7; chassis 8; second fixing screw 81; bushing 9; cylindrical portion 91; flange portion 92. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings.

[0026] The double-blade forward and reverse stirring blade mechanism of the utility model is as follows: Figures 1 to 3 As shown, it includes an upper stirring blade 1, a lower stirring blade 2 and a planetary gear assembly 5, as shown Figure 4 and Figure 5 As shown, the planetary gear assembly 5 includes a sun gear 51, planetary gears 52 and a ring gear 53. Figure 2 As shown, the upper stirring blade 1 is positioned relative to the sun gear 51 in the circumferential direction, and the lower stirring blade 2 is positioned relative to the gear ring 53 in the circumferential direction. Figure 4 and Figure 5As shown, the ring gear 53 is coaxially sleeved outside the sun gear 51, and the planetary gears 52 are arranged between the ring gear 53 and the sun gear 51. The planetary gears 52 are meshingly connected with the ring gear 53 and the sun gear 51. The planetary gears 52 are arranged for fixed-axis rotation. During this period, the number of planetary gears 52 can be set to three, and the three planetary gears 52 are evenly distributed around the sun gear 51.

[0027] The following briefly describes the working principle of the double-blade forward and reverse stirring knife mechanism of the present invention: when the motor drives the sun gear 51 to rotate, the sun gear 51 drives the planetary gear 52 to rotate in the opposite direction, and because the ring gear 53 and the planetary gear 52 are in internal meshing connection, the planetary gear 52 drives the ring gear 53 to rotate in the same direction, that is, the sun gear 51 and the ring gear 53 rotate in opposite directions relative to each other, and because the upper stirring knife 1 and the sun gear 51 are circumferentially positioned relative to each other, and the lower stirring knife 2 and the ring gear 53 are circumferentially positioned relative to each other, the sun gear 51 drives the upper stirring knife 1 to rotate in the same direction, and the ring gear 53 drives the lower stirring knife 2 to rotate in the same direction, that is, the upper stirring knife 1 and the lower stirring knife 2 rotate in the opposite direction relative to each other, that is, the stirring knife mechanism of the present invention has a two-way stirring function. In actual application, the upper stirring blade 1 and the lower stirring blade 2 are immersed in the liquid in the stirring chamber, and the upper stirring blade 1 and the lower stirring blade 2 rotate to work. The liquid flow formed by the rotation of the upper stirring blade 1 and the liquid flow formed by the rotation of the lower stirring blade 2 interfere with each other, resulting in an intensified disordered flow of the liquid, thereby enhancing the turbulence effect, that is, avoiding the formation of dead water areas in the stirring chamber, so that the food mixed in the liquid can fully contact with the upper stirring blade 1 and the lower stirring blade 2, and the food can be hit by the upper stirring blade 1 or the lower stirring blade 2 again in a shorter time, which is beneficial to improving the stirring and cutting efficiency and enhancing the chopping effect.

[0028] The motor assembly can be coaxially connected to the sun gear 51. Since the number of teeth of the sun gear 51 is less than that of the ring gear 53, the rotation speed of the lower stirring blade 2 is less than that of the upper stirring blade 1, and the upper stirring blade 1 can be used as the main cutting tool.

[0029] Furthermore, if Figure 2 and Figure 3 As shown, the double-blade forward and reverse stirring blade mechanism of the utility model also includes a rotating shaft 3 and a rotating sleeve 4. The sun gear 51 is adaptively arranged on the rotating shaft 3. The rotating shaft 3 and the sun gear 51 are positioned relative to each other in the circumferential direction. For example, a groove pattern 301 parallel to the axis of the rotating shaft 3 is partially formed on the rotating shaft 3. The groove pattern 301 is distributed in the circumferential direction. The portion of the rotating shaft 3 with the groove pattern 301 is in close contact with the central hole wall of the sun gear 51, that is, the central hole of the rotating shaft 3 and the sun gear 51 is interference fit, so that the rotating shaft 3 and the sun gear 51 are relatively fixed with a simple structure; the upper stirring blade 1 is installed on the upper end of the rotating shaft 3, as shown in FIG. Figure 2As shown, for example, a shaft shoulder is formed on the upper end of the rotating shaft 3, the rotating shaft 3 is adapted to pass through the central hole (which may be a D-shaped hole or a flat hole) of the upper stirring blade 1, and the upper stirring blade 1 leans against the above-mentioned shaft shoulder, and a knife locking nut 31 is provided to be screwed with the upper end of the rotating shaft 3, and the knife locking nut 31 presses the upper stirring blade 1 tightly against the above-mentioned shaft shoulder; Figure 2 As shown, the rotating sleeve 4 is coaxially sleeved outside the rotating shaft 3. Figure 4 As shown, the upper portion of the gear ring 53 is formed with a collar portion 532. Figure 2 As shown, the neck sleeve portion 532 is adapted to be arranged outside the lower end portion of the rotating sleeve 4, and the neck sleeve portion 532 and the rotating sleeve 4 are positioned relative to each other in the circumferential direction, that is, the gear ring 53 can drive the rotating sleeve 4 to rotate synchronously, and the lower mixing knife 2 is installed on the upper end of the rotating sleeve 4, specifically, the upper end of the rotating sleeve 4 is adapted to pass through the center hole of the lower mixing knife 2 (which can be a D-shaped hole or a flat hole); by arranging the rotating sleeve 4 coaxially sleeved outside the rotating shaft 3, the lower mixing knife 2 and the upper mixing knife 1 can be arranged coaxially, which is beneficial to the dynamic balance of the double-blade forward and reverse mixing knife mechanism of the utility model during operation, and avoids obvious shaking of the mixer or wall breaker using the double-blade forward and reverse mixing knife mechanism of the utility model during operation.

[0030] Furthermore, if Figure 6 As shown, the neck sleeve portion 532 is an inner polygonal structure. For example, the cross-section of the inner wall of the neck sleeve portion 532 is a quadrilateral (but rounded corners can be retained at the corners). Since the neck sleeve portion 532 is adapted to be arranged outside the lower end portion of the rotating sleeve 4, in other words, the lower end portion of the rotating sleeve 4 is an outer square shaft head structure, the structure is simple, so that the neck sleeve portion 532 and the rotating sleeve 4 are relatively positioned in the circumferential direction. Specifically, the rotating sleeve 4 is installed on the neck sleeve portion 532 from bottom to top.

[0031] Furthermore, if Figure 4 and Figure 5 As shown, the planetary gear assembly 5 includes a planetary gear shaft 54, a lower bracket 55 and an upper bracket 56, the planetary gear 52 is axially positioned between the lower bracket 55 and the upper bracket 56, that is, the planetary gear 52 is clamped between the lower bracket 55 and the upper bracket 56, the planetary gear shaft 54 ​​is coaxially installed in the corresponding planetary gear 52, the upper end of the planetary gear shaft 54 ​​is adapted and plugged with the upper bracket 56, and the lower end of the planetary gear shaft 54 ​​is adapted and plugged with the upper bracket 56, so that the planetary gear shaft 54 ​​is axially positioned, for example, the planetary gear shaft 54 ​​and the corresponding planetary gear 52 are interference fit, the planetary gear shaft 54 ​​can rotate, and bearings can be set between the planetary gear shaft 54 ​​and the lower bracket 55 and the upper bracket 56. By setting the lower bracket 55 and the upper bracket 56, it is beneficial for the planetary gear shaft 54 ​​and the planetary gear 52 to be modularly set, and it is beneficial for the planetary gear 52 to rotate stably.

[0032] Furthermore, if Figure 2As shown, the lower side of the planetary gear assembly 5 is provided with a chassis 8, and the planetary gear assembly 5 includes a first fixing screw 57, the first fixing screw 57 passes through the lower bracket 55 and the upper bracket 56, and the first fixing screw 57 is screwed to the chassis 8, so that the first fixing screw 57 fixes the lower bracket 55 and the upper bracket 56 to the chassis 8 at the same time. Figure 4 As shown, the upper bracket 56 may also be formed with a positioning lower boss 561, such as Figure 2 As shown, the first fixing screw 57 coaxially passes through the positioning lower boss 561, and the positioning lower boss 561 is adapted and plugged with the lower bracket 55, so as to position the lower bracket 55 and the upper bracket 56 with high precision.

[0033] Furthermore, if Figure 2 and Figure 3 As shown, a gearbox shell 6 is provided on the outer side of the planetary gear assembly 5, and the gearbox shell 6 is fixedly connected to the chassis 8. A bushing 9 is adapted between the inner wall of the gearbox shell 6 and the neck sleeve portion 532, so that the gearbox shell 6 radially positions the ring gear 53. The bushing 9 can be a copper bushing, and the neck sleeve portion 532 can rotate in the bushing 9.

[0034] Furthermore, if Figure 4 As shown, the gear ring 53 is formed with a step portion 531, and the inner end of the step portion 531 is connected to the lower end of the neck sleeve portion 532 as a whole. Specifically, the neck sleeve portion 532 and the internal gear of the gear ring 53 are coaxially arranged, but the outer diameter of the neck sleeve portion 532 is smaller than the pitch circle diameter of the internal gear of the gear ring 53, so the step portion 531 is formed to connect the internal gear of the gear ring 53 and the neck sleeve portion 532 as a whole, as shown in FIG. Figure 7 As shown, the lower end of the bushing 9 is formed with a flange portion 92. Figure 2 As shown, the flange portion 92 is adapted to be disposed between the step portion 531 and the inner wall of the gear box housing 6, thereby preventing the gear ring 53 from axially contacting the gear box housing 6. Figure 7 As shown, a cylindrical portion 91 is formed at the upper end of the bushing 9 , and specifically, the cylindrical portion 91 is adapted to be arranged between the inner wall of the gear box housing 6 and the neck sleeve portion 532 .

[0035] Furthermore, if Figures 1 to 3 As shown, the double-blade forward and reverse stirring blade mechanism of the utility model also includes an outer shell 7, a gear box shell 6 is arranged inside the outer shell 7, the upper part of the rotating sleeve 4 passes through the outer shell 7, an outer seal 42 is provided between the inner wall of the outer shell 7 and the outer wall of the rotating sleeve 4, an inner seal 33 is provided between the inner wall of the rotating sleeve 4 and the rotating shaft 3, the outer shell 7 can be made of plastic, the outer shell 7 is used to isolate the planetary gear assembly 5 from the liquid, an outer bearing 41 can be provided between the inner wall of the outer shell 7 and the outer wall of the rotating sleeve 4, and an inner bearing 32 can be provided between the inner wall of the rotating sleeve 4 and the rotating shaft 3.

[0036] Furthermore, if Figure 8As shown, the gear box housing 6 is provided with mounting ears 61 on the outside, and the mounting ears 61 may be evenly distributed in the circumferential direction, such as Figure 2 As shown, the lower part of the housing 7 is threadedly mounted with a second fixing screw 81, which passes through the chassis 8 and the mounting ear 61, so that the second fixing screw 81 simultaneously fixes the gear box housing 6 and the housing 7 to the chassis 8, which is conducive to the stability and reliability of the structure of the double-blade forward and reverse stirring blade mechanism and is conducive to reducing vibration. A sealing gasket can be provided between the lower end of the housing 7 and the upper surface of the chassis 8.

[0037] Furthermore, if Figure 1 and Figure 2 As shown, the upper stirring blade 1 is bent upward, and the lower stirring blade 2 is bent downward. In detail, the upper stirring blade 1 includes a central flat plate portion, and the rotating shaft 3 passes through the central flat plate portion of the upper stirring blade 1. The upper stirring blade 1 also includes a wing portion, so the above-mentioned wing portion is formed by bending upward relative to the above-mentioned central flat plate portion, and the blade of the upper stirring blade 1 is formed on the above-mentioned wing portion. Through the above-mentioned arrangement, it is beneficial to increase the rotating cutting range, which is beneficial for the food to be easily hit by the upper stirring blade 1 or the lower stirring blade 2. The upper part of the shell 7 can be set to be conical to avoid the lower stirring blade 2.

[0038] To sum up, since the upper stirring blade 1 and the lower stirring blade 2 of the utility model are connected through a planetary gear mechanism, the use of a transmission structure offset to one side is avoided, which is beneficial for the double-blade forward and reverse stirring blade mechanism of the utility model to have better dynamic balance characteristics when working, which is conducive to smooth operation.

Claims

1. A double-blade forward and reverse stirring blade mechanism, characterized in that: The invention comprises an upper stirring blade (1), a lower stirring blade (2) and a planetary gear assembly (5), wherein the planetary gear assembly (5) comprises a sun gear (51), a planetary gear (52) and a ring gear (53), wherein the upper stirring blade (1) and the sun gear (51) are arranged relative to each other in a circumferential direction, and the lower stirring blade (2) and the ring gear (53) are arranged relative to each other in a circumferential direction, the ring gear (53) is coaxially sleeved outside the sun gear (51), the planetary gear (52) is arranged between the ring gear (53) and the sun gear (51), the planetary gear (52) is meshingly connected with the ring gear (53) and the sun gear (51), and the planetary gear (52) is arranged to rotate on a fixed axis.

2. The double-blade forward and reverse stirring blade mechanism according to claim 1, characterized in that: The invention also comprises a rotating shaft (3) and a rotating sleeve (4), wherein the sun gear (51) is adapted to be mounted on the rotating shaft (3), the rotating shaft (3) and the sun gear (51) are arranged relative to each other in the circumferential direction, the upper stirring blade (1) is mounted on the upper end of the rotating shaft (3), the rotating sleeve (4) is coaxially sleeved outside the rotating shaft (3), a neck sleeve portion (532) is formed on the upper part of the gear ring (53), the neck sleeve portion (532) is adapted to be mounted outside the lower end of the rotating sleeve (4), the neck sleeve portion (532) and the rotating sleeve (4) are arranged relative to each other in the circumferential direction, and the lower stirring blade (2) is mounted on the upper end of the rotating sleeve (4).

3. The double-blade forward and reverse stirring blade mechanism according to claim 2, characterized in that: The neck sleeve portion (532) is an inner polygonal structure.

4. The double-blade forward and reverse stirring blade mechanism according to claim 2, characterized in that: The planetary gear assembly (5) comprises a planetary gear shaft (54), a lower bracket (55) and an upper bracket (56); the planetary gear (52) is axially positioned between the lower bracket (55) and the upper bracket (56); the planetary gear shaft (54) is coaxially mounted in the corresponding planetary gear (52); the upper end of the planetary gear shaft (54) is adapted to be plugged into the upper bracket (56); and the lower end of the planetary gear shaft (54) is adapted to be plugged into the upper bracket (56).

5. The double-blade forward and reverse stirring blade mechanism according to claim 4, characterized in that: A chassis (8) is provided on the lower side of the planetary gear assembly (5), and the planetary gear assembly (5) comprises a first fixing screw (57), the first fixing screw (57) passing through the lower bracket (55) and the upper bracket (56), and the first fixing screw (57) is screwed to the chassis (8).

6. The double-blade forward and reverse stirring blade mechanism according to claim 5, characterized in that: A gearbox housing (6) is provided on the outer side of the planetary gear assembly (5); the gearbox housing (6) is fixedly connected to the chassis (8); and a bushing (9) is adapted to be provided between the inner wall of the gearbox housing (6) and the neck sleeve portion (532).

7. The double-blade forward and reverse stirring blade mechanism according to claim 6, characterized in that: The gear ring (53) is formed with a step portion (531), the inner end of the step portion (531) is integrally connected to the lower end of the neck sleeve portion (532), and the lower end of the bushing (9) is formed with a flange portion (92), and the flange portion (92) is adapted to be arranged between the step portion (531) and the inner wall of the gear box housing (6).

8. The double-blade forward and reverse stirring blade mechanism according to claim 7, characterized in that: It also includes an outer shell (7), the gear box shell (6) is arranged inside the outer shell (7), the upper part of the rotating sleeve (4) passes through the outer shell (7), an outer sealing member (42) is arranged between the inner wall of the outer shell (7) and the outer wall of the rotating sleeve (4), and an inner sealing member (33) is arranged between the inner wall of the rotating sleeve (4) and the rotating shaft (3).

9. The double-blade forward and reverse stirring blade mechanism according to claim 8, characterized in that: The gear box housing (6) is provided with a mounting ear (61) on the outside, and a second fixing screw (81) is screwed on the lower part of the outer housing (7), and the second fixing screw (81) passes through the chassis (8) and the mounting ear (61).

10. The double-blade forward and reverse stirring blade mechanism according to claim 1, characterized in that: The upper stirring blade (1) is arranged to be bent upward, and the lower stirring blade (2) is arranged to be bent downward.

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