A multi-blade hand-held mixer structure

Abstract

This utility model relates to the field of blender technology, specifically a multi-blade handheld blender structure. It includes a main unit with a stirring rod, a drive shaft inside the stirring rod, a protective sleeve on the stirring rod, and a transmission assembly and at least two blades inside the protective sleeve, each blade equipped with a blade. The at least two blades are spaced apart from each other, and the drive shaft connects each blade through the transmission assembly, thereby driving the blades to rotate within the protective sleeve. This multi-blade handheld blender structure, with at least two blades and blades inside the protective sleeve, allows the blades to rotate synchronously, creating an interlaced cutting motion for the food within the sleeve. This reduces the impact of vortices, improving the blender's efficiency and user experience.

Description

Technical Field

[0001] This utility model relates to the field of mixer technology, and in particular to a multi-blade handheld mixer structure. Background Technology

[0002] Existing blenders mainly include horizontal and handheld types. For small quantities of ingredients or when mixing in other containers, handheld blenders are more flexible. A handheld blender mainly consists of a main unit and a mixing head. The mixing head contains rotating blades, and the motor in the main unit drives the blades to rotate via a drive shaft, thereby cutting or mixing the ingredients in the container.

[0003] For example, Chinese patent CN219186686U discloses a connection structure for a handheld mixer, including: a housing disposed on the main unit and a connecting sleeve disposed on an accessory; a motor is disposed inside the housing; a lower motor bracket is disposed below the motor, and the output shaft of the motor passes through the lower motor bracket and is connected to an upper connector; the accessory includes: a connecting sleeve, a drive shaft, and a mixing component; the end of the drive shaft is connected to the lower connector; after the accessory is installed on the main unit, it is locked to the lower motor bracket by the connecting sleeve, and the lower connector is engaged with the upper connector. The mixing component is disposed at the lower end of the drive shaft, and the motor is connected to the drive shaft by a transmission mechanism, thereby driving the mixing component to rotate.

[0004] The aforementioned existing handheld mixers, based on miniaturization, use a single drive shaft to drive a single mixing element, resulting in a limited cutting method and low efficiency, negatively impacting the user experience. Therefore, the existing technology requires further improvement and development. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a multi-blade handheld mixer with a reasonable structure and high mixing efficiency.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This utility model discloses a multi-blade handheld mixer structure, comprising a main unit, a stirring rod on the main unit, a drive shaft inside the stirring rod, a protective sleeve on the stirring rod, and a transmission assembly and at least two blades inside the protective sleeve, each blade being equipped with a blade; the at least two blades are spaced apart from each other, and the drive shaft is connected to each blade through the transmission assembly, thereby driving the blades to rotate within the protective sleeve. The protective sleeve contains multiple blades and blades, each driven by the transmission assembly. The rotation of multiple blades can form staggered cutting, reducing the eddy current suction force generated by the rotation of a single blade and improving cutting efficiency.

[0008] According to the above scheme, a bracket is provided inside the sheath, and the cutter bar is rotatably mounted on the bracket via bearings. A transmission assembly is connected to the upper end of the cutter bar, and the blade is located inside the lower port of the sheath and fixedly connected to the lower end of the cutter bar. The bracket assembles the cutter bar inside the sheath, and at least two cutter bars can rotate independently inside the sheath via bearings. The transmission assembly connects the cutter bars, thereby driving the blades to form staggered cutting, improving efficiency.

[0009] According to the above scheme, the support includes a first support and a second support. The first support is fixedly disposed on the upper part of the sheath, and the second support is fixedly disposed on the middle part of the sheath. The transmission assembly is disposed between the first support and the second support. The bearing includes a first bearing and a second bearing. The upper end of the tool bar is connected to the first support through the first bearing, and the middle part of the tool bar is connected to the second support through the second bearing. Specifically, the tool bar is connected to the first support and the second support through the first bearing and the second bearing, so that the tool bar is rotatably disposed within the sheath. The first support stabilizes the upper end of the tool bar, and the second support stabilizes the middle part of the tool bar, so that the blade at the lower end of the tool bar is rotatably disposed within the lower port of the sheath. The transmission assembly is disposed in the inner cavity of the sheath between the first support and the second support. The second support can seal the upper inner cavity of the sheath to protect the transmission assembly, so that the transmission connection between the transmission shaft and the tool bar is stable and reliable.

[0010] According to the above scheme, the transmission assembly includes a driving gear, a driven gear, and a passive gear. The transmission shaft passes through the first bracket, and a third bearing is provided between the transmission shaft and the first bracket. The driving gear is fixedly installed at the lower end of the transmission shaft. At least two of the tool holders are provided with passive gears, and one of the tool holders is provided with a driven gear. The driving gear and the driven gear are meshed and connected. All the passive gears are meshed and connected in sequence.

[0011] The drive shaft is rotatably mounted on the first bracket via a third bearing, so that the lower end of the drive shaft is connected to the driving gear. The driving gear drives one of the tool holders through a driven gear. At least two tool holders are connected by meshing driven gears, establishing a series transmission relationship between the drive shaft and at least two tool holders, thereby enabling the at least two tool holders to rotate synchronously. By meshing the driven gears, the distance between the tool holders can be reduced, and the meshing of the driving gear with the driven gear allows for more flexible setting of the transmission ratio between the drive shaft and the tool holders.

[0012] For ease of understanding, a double-blade structure is used as an example here. Furthermore, through the driving gear, driven gear, and passive gear, the transmission shaft and the two blades are sequentially driven, so that the rotation directions of the two blades are opposite, thereby causing the blades on the two blades to rotate in opposite directions, forming a shearing interaction and improving the stirring efficiency.

[0013] According to the above scheme, the transmission assembly includes a driving gear and a driven gear. A transmission shaft passes through a first support, and a third bearing is provided between the transmission shaft and the first support. The driving gear is fixedly mounted at the lower end of the transmission shaft. At least two of the tool holders are equipped with driven gears, and the driving gear meshes with all the driven gears respectively. The transmission shaft is rotatably mounted through the first support via the third bearing, so that the lower end of the transmission shaft is connected to the driving gear. The driving gear meshes with all the driven gears respectively, establishing a parallel transmission relationship between the transmission shaft and at least two tool holders, thereby enabling at least two tool holders to rotate synchronously.

[0014] Specifically, at least two driven gears are arranged in a star shape around the driving gear, with the driving gear and driven gears on the same horizontal plane. The driving gear meshes with at least two driven gears. This arrangement increases the upper diameter of the sheath but allows for a reduction in the sheath height.

[0015] Alternatively, both the driving gear and the driven gear can be bevel gears, and the driving gear and the driven gear can be staggered in the upper layer, making the transmission assembly more compact, reducing the upper diameter of the sheath, and making the overall structure of the stirring rod more slender.

[0016] According to the above scheme, the blade holder and the drive shaft are set at an angle C, where 30° > C > 0°. The blade holder is inclined relative to the drive shaft to form an angle C, and at least two blade holders form a tapered structure that is smaller at the top and larger at the bottom to meet the layout requirements of the transmission components. Furthermore, the spacing between the blades can be increased so that the blades do not interfere with each other when rotating. In particular, the blade holders are inclined at an angle C, so that the rotation trajectory of the blades also forms an angle C with the horizontal plane. The staggered rotation of at least two blades can effectively overcome part of the eddy current suction force and improve the stirring efficiency.

[0017] During assembly, staggering the mounting angles between the blades can further reduce the assembly spacing between the blade holders, making the layout more compact. Taking a double-blade, double-head layout as an example, the drive gear directly or indirectly drives the blade holders, which rotate synchronously. If the blades are double-blade blades, installing the two blades at a 90° angle can avoid collisions between them.

[0018] According to the above scheme, the blades on each of the tool holders are staggered vertically on the vertical projection plane. That is, the distance between the rotation trajectory of each blade and the horizontal plane is different, so as to avoid collision problems when multiple blades rotate, thereby further reducing the distance between the tool holders and improving the overall compactness of the layout.

[0019] According to the above scheme, the tool holder and the transmission shaft are set at an angle C, where 15° > C > 0°. As mentioned above, after the blade is set up vertically in a staggered manner on the vertical projection plane, a smaller angle C can be set between the tool holder and the transmission shaft, making the layout more compact.

[0020] According to the above scheme, a first sealing ring is provided between the second support and the sheath, and several shaft seats are provided on the second support. Second bearings are respectively installed in the corresponding shaft seats, and a second sealing ring is provided in the lower end of the shaft seat. The transmission assembly is located between the first and second supports, and a sealed arrangement is provided between the sheath and the stirring rod. Therefore, a first sealing ring is provided between the second support and the sheath, and a second sealing ring is provided between the blade rod and the shaft seat to ensure the sealing of the upper inner cavity of the sheath and prevent liquid from entering and affecting the transmission assembly.

[0021] According to the above scheme, the main unit is equipped with a controller, a power supply and a motor. The controller is connected to the power supply and the motor through lines respectively. The upper end of the drive shaft is rotatably inserted into the connector of the stirring rod. The connector is detachably assembled on the main unit, so that the upper end of the drive shaft is connected to the motor for transmission.

[0022] This utility model discloses a multi-blade handheld mixer structure, in which at least two blades and blades are installed inside the protective sleeve. The blades rotate synchronously to form an interlaced cutting motion on the food inside the sleeve, which can reduce the influence of eddies and improve the working efficiency of the mixer and the user experience. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the lower port structure of the sheath of this utility model;

[0025] Figure 3 This is an exploded structural diagram of the stirring rod and transmission assembly of this utility model;

[0026] Figure 4 This is a schematic cross-sectional view of the overall structure of Embodiment 1 of this utility model;

[0027] Figure 5 This is a cross-sectional structural diagram of the stirring rod and transmission assembly of Embodiment 2 of this utility model.

[0028] In the picture:

[0029] 1. Main unit; 2. Sheath; 3. Blade holder; 11. Stirring rod; 12. Drive shaft; 13. Drive gear; 14. Controller; 15. Power supply; 16. Motor; 17. Connector; 120. Third bearing; 21. First bracket; 22. Second bracket; 23. First sealing ring; 24. Shaft seat; 210. First bearing; 220. Second bearing; 240. Second sealing ring; 31. Blade; 32. Driven gear; 33. Followed gear. Detailed Implementation

[0030] The technical solution of this utility model will be described below with reference to the accompanying drawings and embodiments.

[0031] Example 1

[0032] like Figure 1-4 As shown, a multi-blade handheld mixer structure includes a main unit 1, a stirring rod 11 on the main unit 1, a drive shaft 12 inside the stirring rod 11, a protective sleeve 2 on the stirring rod 11, a transmission assembly and at least two blades 3 inside the protective sleeve 2, each blade 3 having a blade 31; the at least two blades 3 are spaced apart from each other, and the drive shaft 12 is connected to each blade 3 through the transmission assembly, thereby driving the blades 31 to rotate within the protective sleeve 2. The protective sleeve 2 contains multiple blades 3 and blades 31, each driven by the transmission assembly. The rotation of multiple blades 31 can form staggered cutting, which can reduce the eddy current suction force generated by the rotation of a single blade head and improve cutting efficiency.

[0033] The sheath 2 contains a bracket, and the cutter bar 3 is rotatably mounted on the bracket via bearings. A transmission assembly is connected to the upper end of the cutter bar 3, and the blade 31 is located in the lower port of the sheath 2 and fixedly connected to the lower end of the cutter bar 3. The bracket assembles the cutter bar 3 within the sheath 2, and at least two cutter bars 3 can rotate independently within the sheath 2 via bearings. The transmission assembly connects the cutter bars 3, thereby driving the blade 31 to form staggered cutting, improving efficiency.

[0034] The support includes a first support 21 and a second support 22. The first support 21 is fixedly disposed on the upper part of the sheath 2, and the second support 22 is fixedly disposed on the middle part of the sheath 2. The transmission assembly is disposed between the first support 21 and the second support 22. The bearing includes a first bearing 210 and a second bearing 220. The upper end of the tool bar 3 is connected to the first support 21 through the first bearing 210, and the middle part of the tool bar 3 is connected to the second support 22 through the second bearing 220. Specifically, the tool bar 3 is connected to the first support 21 and the second support 22 through the first bearing 210 and the second bearing 220, so that the tool bar 3 is rotatably disposed within the sheath 2. The first support 21 stabilizes the upper end of the tool bar 3, and the second support 22 stabilizes the middle part of the tool bar 3, so that the blade 31 at the lower end of the tool bar 3 is rotatably disposed within the lower port of the sheath 2. The transmission assembly is disposed in the inner cavity of the sheath 2 between the first support 21 and the second support 22. The second support 22 can seal the upper inner cavity of the sheath 2 to protect the transmission assembly, so that the transmission connection between the transmission shaft 12 and the tool bar 3 is stable and reliable.

[0035] The transmission assembly includes a driving gear 13, a driven gear 33, and a passive gear 32. The transmission shaft 12 passes through the first bracket 21, and a third bearing 120 is provided between the transmission shaft 12 and the first bracket 21. The driving gear 13 is fixedly installed at the lower end of the transmission shaft 12. At least two of the tool holders 3 are provided with passive gears 32, and one of the tool holders 3 is provided with a driven gear 33. The driving gear 13 and the driven gear 33 are meshed and connected, and all the passive gears 32 are meshed and connected in sequence.

[0036] The drive shaft 12 is rotatably mounted on the first bracket 21 via a third bearing 120, so that the lower end of the drive shaft 12 is connected to the driving gear 13. The driving gear 13 drives one of the tool holders 3 through the driven gear 33. At least two tool holders 3 are connected by meshing with the driven gear 32, establishing a series transmission relationship between the drive shaft 12 and the at least two tool holders 3, thereby enabling the at least two tool holders 3 to rotate synchronously. By meshing with each other, the distance between the tool holders 3 can be reduced, and the meshing of the driving gear 13 with the driven gear 33 allows for more flexible setting of the transmission ratio between the drive shaft 12 and the tool holders 3.

[0037] For ease of understanding, the double-blade structure 3 is used as an example here. Through the driving gear 13, driven gear 33 and passive gear 32, the transmission shaft 12 and the two blades 3 form a sequential transmission, so that the rotation directions of the two blades 3 are opposite, thereby causing the blades 31 on the two blades 3 to rotate in opposite directions, forming a shearing interaction and improving the stirring efficiency.

[0038] In another embodiment of the transmission assembly, the transmission assembly includes a driving gear 13 and a driven gear 32. A transmission shaft 12 passes through a first bracket 21, and a third bearing 120 is provided between the transmission shaft 12 and the first bracket 21. The driving gear 13 is fixedly mounted at the lower end of the transmission shaft 12. At least two of the tool holders 3 are provided with driven gears 32, and the driving gear 13 meshes with all of the driven gears 32 respectively. The transmission shaft 12 is rotatably mounted through the first bracket 21 via the third bearing 120, so that the lower end of the transmission shaft 12 is connected to the driving gear 13. The driving gear 13 meshes with all of the driven gears 32 respectively, and a parallel transmission relationship is established between the transmission shaft 12 and at least two tool holders 3, thereby enabling at least two tool holders 3 to rotate synchronously.

[0039] Specifically, at least two driven gears 32 form a star-shaped arrangement with the driving gear 13 as the center. The driving gear 13 meshes with at least two driven gears 32 respectively. This allows the diameter of the upper part of the sheath 2 to be increased, but the height of the sheath 2 can be reduced.

[0040] Alternatively, both the driving gear 13 and the driven gear 32 can be bevel gears, and the driving gear 13 and the driven gear 32 can be staggered in the upper layer, making the transmission assembly more compact, reducing the upper diameter of the sheath 2, and making the overall structure of the stirring rod 11 more slender.

[0041] The blade holder 3 is positioned at an angle C with the drive shaft 12, where 30° > C > 0°. The blade holder 3 is inclined relative to the drive shaft 12 to form angle C, and at least two blade holders 3 form a tapered structure that is smaller at the top and larger at the bottom, thus meeting the layout requirements of the transmission assembly. Furthermore, the spacing between the blades 31 can be increased to prevent interference during rotation. In particular, the blade holder 3, inclined at angle C, ensures that the rotation trajectory of the blades 31 also forms an angle C with the horizontal plane. The staggered rotation of at least two blades 31 effectively overcomes some of the eddy current suction, improving stirring efficiency.

[0042] During assembly, the installation angles of the blades 31 are staggered, which can further reduce the assembly spacing between the blade holders 3, making the layout more compact. Taking the double blade holder 3 and double blade head layout as an example, the drive gear 13 directly or indirectly drives the blade holder 3, and the blade holders 3 rotate synchronously. If the blade 31 is a double blade, the two blades 31 are installed at a 90° angle to avoid the problem of collision between the blades 31.

[0043] The main unit 1 is equipped with a controller 14, a power supply 15, and a motor 16. The controller 14 is connected to the power supply 15 and the motor 16 via wiring. The upper end of the drive shaft 12 is rotatably inserted into the connector 17 of the stirring rod 11. The connector 17 is detachably mounted on the main unit 1, thereby enabling the upper end of the drive shaft 12 to be connected to the motor 16 for transmission. The assembly and transmission structure between the main unit 1 and the stirring rod 11 is existing technology and will not be described in detail here.

[0044] Example 2

[0045] like Figure 5 As shown, the difference between this embodiment and Embodiment 1 lies only in that the blades 31 on each of the blade holders 3 are staggered vertically on the vertical projection plane. That is, the distance between the rotation trajectory of each blade 31 and the horizontal plane is different, so as to avoid collision problems when multiple blades 31 rotate, thereby further reducing the distance between the blade holders 3 and improving the overall compactness of the layout.

[0046] The cutter bar 3 and the transmission shaft 12 are set at an angle C, where 15° > C > 0°. As mentioned above, after the blade 31 is set in a staggered manner on the vertical projection plane, a smaller angle C can be set between the cutter bar 3 and the transmission shaft 12, making the layout more compact.

[0047] A first sealing ring 23 is provided between the second support 22 and the sheath 2. Several bearing seats 24 are provided on the second support 22, and second bearings 220 are respectively installed in the corresponding bearing seats 24. A second sealing ring 240 is provided in the lower port of each bearing seat 24. The transmission assembly is located between the first support 21 and the second support 22. The sheath 2 and the stirring rod 11 are sealed together. Therefore, a first sealing ring 23 is provided between the second support 22 and the sheath 2, and a second sealing ring 240 is provided between the blade 3 and the bearing seat 24 to ensure the sealing of the upper inner cavity of the sheath 2 and prevent liquid from entering and affecting the transmission assembly.

[0048] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A multi-blade handheld mixer structure, comprising a main unit (1), wherein the main unit (1) is provided with a stirring rod (11), and a drive shaft (12) is provided inside the stirring rod (11), characterized in that, The stirring rod (11) is provided with a protective sleeve (2), and the protective sleeve (2) is provided with a transmission component and at least two blades (3), each blade (3) being provided with a blade (31); At least two of the tool holders (3) are spaced apart from each other, and the drive shaft (12) is connected to each of the tool holders (3) via a drive assembly to drive the blade (31) to rotate within the sheath (2).

2. The multi-blade hand blender structure according to claim 1, wherein, The sheath (2) is provided with a bracket, the blade (3) is rotatably mounted on the bracket via a bearing, the transmission assembly is connected to the upper end of the blade (3), and the blade (31) is located in the lower port of the sheath (2) and fixedly connected to the lower end of the blade (3).

3. The multi-blade hand blender structure according to claim 2, wherein, The support includes a first support (21) and a second support (22). The first support (21) is fixedly installed on the upper part of the sheath (2), and the second support (22) is fixedly installed in the middle part of the sheath (2). The transmission assembly is located between the first support (21) and the second support (22). The bearing includes a first bearing (210) and a second bearing (220). The upper end of the tool bar (3) is connected to the first support (21) through the first bearing (210), and the middle part of the tool bar (3) is connected to the second support (22) through the second bearing (220).

4. The multi-blade hand blender structure according to claim 3, wherein, The transmission assembly includes a driving gear (13), a driven gear (33), and a passive gear (32). The transmission shaft (12) passes through the first bracket (21), and a third bearing (120) is provided between the transmission shaft (12) and the first bracket (21). The driving gear (13) is fixedly installed at the lower end of the transmission shaft (12). At least two of the tool holders (3) are provided with passive gears (32), and one of the tool holders (3) is provided with a driven gear (33). The driving gear (13) and the driven gear (33) are meshed and connected. All the passive gears (32) are meshed and connected in sequence.

5. The multi-blade hand blender structure according to claim 3, wherein, The transmission assembly includes a drive gear (13) and a driven gear (32). The transmission shaft (12) passes through the first bracket (21), and a third bearing (120) is provided between the transmission shaft (12) and the first bracket (21). The drive gear (13) is fixedly installed at the lower end of the transmission shaft (12). At least two of the tool holders (3) are provided with driven gears (32), and the drive gear (13) meshes with all the driven gears (32).

6. The multi-blade hand blender structure according to any one of claims 1-5, wherein, The tool holder (3) and the transmission shaft (12) are set at an angle C, where 30° > C > 0°.

7. The multi-blade hand blender structure according to claim 6, wherein, The blades (31) on each of the blade holders (3) are staggered vertically on the vertical projection plane.

8. The multi-blade hand blender structure according to claim 7, characterized in that, The tool holder (3) and the transmission shaft (12) are set at an angle C, where 15° > C > 0°.

9. The multi-blade handheld mixer structure according to claim 3, wherein, A first sealing ring (23) is provided between the second bracket (22) and the sheath (2). Several bearing seats (24) are provided on the second bracket (22). The second bearing (220) is installed in the corresponding bearing seat (24), and a second sealing ring (240) is provided in the lower port of the bearing seat (24).

10. The multi-blade handheld mixer structure according to claim 1, wherein, The main machine (1) is provided with a controller (14), a power supply (15) and a motor (16), the controller (14) is connected with the power supply (15) and the motor (16) through lines respectively; The connecting head (17) of the stirring rod (11), the upper end of the transmission shaft (12) is rotatably arranged in the connecting head (17), and the connecting head (17) is detachably assembled on the main machine (1), so that the upper end of the transmission shaft (12) is in driving connection with the motor (16).

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