Knife assembly and food processor

Abstract

This application discloses a blade holder assembly and a food processor. The blade holder assembly includes a bushing assembly and a blade assembly. The blade assembly includes a blade shaft. The bushing assembly includes a rigid outer sleeve, a rigid inner sleeve, a flexible sleeve, an oil seal, and a bearing. The flexible sleeve separates the rigid inner sleeve and the rigid outer sleeve; the rigid outer sleeve includes an outer sleeve top wall, and the outer sleeve top wall includes an outer sleeve through hole; the bearing is located inside the rigid inner sleeve and is axially spaced from the outer sleeve top wall of the blade shaft; the oil seal is connected to the bearing and the outer sleeve top wall. The blade shaft passes through the outer sleeve through hole, passes through the oil seal, and connects to the bearing, and the blade shaft and the outer sleeve top wall are separated by the oil seal. Thus, the flexible sleeve and the oil seal isolate the vibration generated by the blade assembly, and the vibration generated by the blade assembly is not transmitted to the rigid outer sleeve, thereby reducing noise and resulting in a low-noise food processor and a better user experience.

Description

Technical Field

[0001] This application relates to small household appliances, and more particularly to blade assembly and food processor. Background Technology

[0002] The food processor includes a blending jar, a blade assembly, and a motor. The blade assembly includes a blade holder, blade components, and a bushing assembly. The blade holder and the blending jar form a food cavity. The blade components are assembled with the bushing assembly, which is a rigid component mounted on the blade holder. The motor drives the blades of the blade assembly to rotate within the food cavity.

[0003] During use, the vibration generated by the blade assembly is directly transmitted to the steel sleeve assembly, and then to the blade holder and mixing cup, etc., causing the food processor to be very noisy and giving users a bad auditory experience. Utility Model Content

[0004] The purpose of this application is to disclose a blade assembly and a food processor. The food processor has low noise, providing a good user experience.

[0005] In a first aspect, this application discloses a tool holder assembly. The tool holder assembly includes a bushing assembly and a tool assembly. The tool assembly includes a tool shaft. The bushing assembly includes a rigid outer sleeve, a rigid inner sleeve, a flexible sleeve, an oil seal, and a bearing; the flexible sleeve separates the rigid inner sleeve and the rigid outer sleeve; the rigid outer sleeve includes an outer sleeve top wall, and the outer sleeve top wall includes an outer sleeve through hole; the bearing is located inside the rigid inner sleeve and is axially spaced from the outer sleeve top wall on the tool shaft; the oil seal abuts against the bearing and the outer sleeve top wall. The tool shaft passes through the outer sleeve through hole, through the oil seal, and is connected to the bearing, and the tool shaft and the outer sleeve top wall are separated by the oil seal.

[0006] As described above, since the bearing is located inside the rigid inner sleeve and connected to the blade shaft; the flexible sleeve separates the rigid outer sleeve and the rigid inner sleeve; and the oil seal separates the top wall of the rigid outer sleeve and the blade shaft, the blade shaft and the rigid outer sleeve are thus separated by the flexible sleeve and the oil seal. Therefore, the flexible sleeve and the oil seal isolate the vibration generated by the blade assembly, preventing the vibration from being transmitted to the rigid outer sleeve, thereby reducing noise and resulting in a quieter food processor and a better user experience. Furthermore, using an oil seal to separate the rigid outer sleeve from the blade shaft is equivalent to sealing the entire bushing assembly and the space between the bushing assembly and the blade shaft, thus providing a good seal and preventing liquids from entering the bushing assembly. In addition, using an oil seal to separate the bushing assembly from the blade shaft eliminates the need for a separation structure on the flexible sleeve, simplifying the structure of both the rigid inner sleeve and the flexible sleeve.

[0007] In some embodiments, the tool holder assembly includes a rigid abutment that is separate from the bearing and, along the axial direction of the tool shaft, the opposite ends of the flexible sleeve abut against the top wall of the outer sleeve and the rigid abutment, respectively.

[0008] As described above, since the opposite ends of the flexible sleeve abut against the top wall of the outer sleeve and the rigid abutment respectively along the axial direction of the blade shaft, and the rigid abutment is separate from the bearing, this helps to reduce the vibration of the blade assembly (such as the blade shaft) transmitted to the rigid outer sleeve, and also helps to reduce the movement of the bushing assembly. Furthermore, it further helps to reduce the vibration of the blade assembly (such as the blade shaft) transmitted to the rigid outer sleeve, and ultimately, the food processor has low noise.

[0009] In some embodiments, the rigid abutment includes an abutment portion and a blocking portion extending from the abutment portion toward the top wall of the outer sleeve, the abutment portion abutting against the flexible sleeve; the blocking portion having a gap between itself and the rigid inner sleeve and being separate from the bearing.

[0010] As described above, since the abutting part abuts against the soft sleeve, and the blocking part extends toward the top wall of the outer sleeve and is spaced apart from the rigid inner sleeve, the abutting part restricts the movement of the bushing assembly in the axial direction of the blade shaft, and the blocking part can limit the rigid inner sleeve in the radial direction of the blade shaft, preventing the rigid inner sleeve of the bushing assembly from swinging too much in the radial direction of the blade shaft. At the same time, the gap can also prevent the movement of the bushing assembly from hitting the blocking part, playing a pre-protection role. Ultimately, the above configuration helps to reduce the noise generated by the movement of the bushing assembly, achieving the effect of reducing noise and making the food processor quieter.

[0011] In some embodiments, the rigid outer sleeve includes an outer sleeve corner lower than the outer sleeve through-hole, and the flexible sleeve includes a flexible sleeve top end abutting against the top wall of the outer sleeve and a flexible sleeve corner lower than the top end of the flexible sleeve; the flexible sleeve corner and the outer sleeve corner abut against each other, and both are right angles or acute angles. And / or, the rigid inner sleeve includes an inner sleeve corner, and the inner sleeve corner abuts against the bearing.

[0012] As described above, since the corner of the flexible sleeve abuts against the corner of the outer sleeve, and / or the corner of the inner sleeve abuts against the bearing, that is, the top part of the bushing assembly is pressed against each other, and combined with the rigid abutting member abutting against the bottom end of the flexible sleeve, the upper and lower ends of the entire flexible sleeve and the rigid inner sleeve are pressed together. This helps to reduce the overall movement, and further helps to reduce the vibration generated by the tool assembly from being transmitted to the rigid outer sleeve, and then to the tool holder, etc., thereby achieving the effect of reducing noise.

[0013] In some embodiments, the flexible sleeve includes a flexible sleeve tip that abuts against the top wall of the outer sleeve in the axial direction of the cutter shaft, and the rigid inner sleeve is lower than the top wall of the outer sleeve.

[0014] As described above, since the top of the soft sleeve of the soft sleeve abuts against the top wall of the outer sleeve in the axial direction of the blade shaft, and the rigid inner sleeve is lower than the top wall of the outer sleeve, this is more conducive to reducing the vibration of the blade assembly (such as the blade shaft) transmitted to the rigid outer sleeve through the rigid inner sleeve, thereby reducing noise and resulting in a lower noise level in the food processor.

[0015] In some embodiments, the oil seal includes a back surface opposite to the cutter shaft, the back surface of the oil seal including a plurality of protrusions spaced axially from the cutter shaft and all abutting against the rigid inner sleeve.

[0016] As described above, since the multiple protrusions are spaced apart and all abut against the rigid inner sleeve, this design reduces the contact between the oil seal and the rigid inner sleeve, which helps to reduce the transmission of vibration from the tool assembly to the rigid inner sleeve. Consequently, it also helps to reduce the transmission of vibration from the tool assembly to the rigid outer sleeve. On the other hand, the multiple protrusions abut against the rigid inner sleeve, which is equivalent to multiple seals, also helps to prevent water and other substances from entering the bushing assembly. Combined with the sealing of the tool shaft by the spacers, the sealing effect is even better.

[0017] In some embodiments, the oil seal includes a spacer portion located within the outer casing through-hole.

[0018] As described above, the separating part is located inside the through hole of the outer sleeve, which can better separate the cutter shaft from the rigid outer sleeve, and is more conducive to reducing the vibration of the cutter assembly transmitted to the rigid outer sleeve.

[0019] In some embodiments, the rigid inner sleeve and the flexible sleeve are injection molded as a single unit, and the rigid inner sleeve and the flexible sleeve are pressed into the rigid outer sleeve as a whole.

[0020] As described above, the rigid inner sleeve and the soft sleeve are injection molded as a single piece and pressed into the rigid outer sleeve, which helps to improve concentricity and thus avoid noise caused by misalignment, resulting in a low noise level in the food processor.

[0021] In some embodiments, the tool holder assembly includes a tool holder, the tool holder including a tool holder cavity for mounting the bushing assembly, the bushing assembly being inserted into and injection molded integrally with the tool holder cavity.

[0022] As described above, the bushing assembly is inserted into the blade holder cavity and injection molded as a single unit. This helps to improve concentricity, thereby avoiding noise caused by misalignment and resulting in a low-noise food processor.

[0023] In some embodiments, the bushing assembly has a height h along the axial direction of the tool shaft, and the bushing assembly is inserted into the tool holder cavity to a depth of at least h / 2.

[0024] As described above, the bushing assembly is inserted into the blade holder cavity to a depth of at least h / 2. During the rotation of the blade assembly in the blade holder assembly, this depth helps to ensure that the bushing assembly does not tilt relative to the blade holder. When the bushing assembly tilts, noise is easily generated. Therefore, the above setting helps to reduce noise, resulting in a low-noise food processor.

[0025] In some embodiments, the blade assembly includes a blade connected to the blade shaft; the blade holder assembly includes a blade holder, which includes an upper blade holder and a lower blade holder, the upper blade holder being assembled with the bushing assembly, and the cross-sectional area of ​​the upper blade holder along the radial direction of the blade shaft gradually increases away from the blade until it is connected to the lower blade holder; the lower blade holder is used for assembly with a mixing cup.

[0026] As described above, since the blade holder includes an upper blade holder and a lower blade holder, the cross-sectional area of ​​the upper blade holder along the radial direction of the blade shaft gradually increases in the direction away from the blade until it connects with the lower blade holder. In this way, the larger the downward part of the blade holder, the more stable the blade holder assembly is during operation, and the less likely it is to generate noise due to shaking, resulting in low noise in the food processor.

[0027] Secondly, this application discloses a food processor. The food processor includes a motor, a mixing bowl, and any of the aforementioned blade assembly; the motor drives the blades of the blade assembly to rotate within the mixing bowl.

[0028] As described above, the food processor has at least the beneficial effects of the blade assembly, which will not be elaborated further. Attached Figure Description

[0029] Figure 1 This is a front view of the food processor described in this application;

[0030] Figure 2 yes Figure 1 A cross-sectional view of the food processor shown;

[0031] Figure 3 yes Figure 2 An enlarged view of part A;

[0032] Figure 4 yes Figure 3 Enlarged view of section B;

[0033] Figure 5 This is an exploded view of the tool holder assembly of this application;

[0034] Figure 6 This is an exploded view of the bushing assembly of this application;

[0035] Figure 7 This is a cross-sectional view of the bushing assembly of this application. Detailed Implementation

[0036] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0037] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0038] See Figure 2 , Figure 3 and Figure 5 This application discloses a tool holder assembly 10. The tool holder assembly includes a bushing assembly 1 and a tool assembly 2. Furthermore... Figure 3 , Figure 4 , Figure 6 and Figure 7 The bushing assembly 1 includes a rigid outer sleeve 11, a rigid inner sleeve 12, a flexible sleeve 13, an oil seal 14, and a bearing 15. The materials of the rigid outer sleeve 11 and the rigid inner sleeve 12 are not limited; for example, both the rigid outer sleeve 11 and the rigid inner sleeve 12 can be steel. The rigid outer sleeve 11 includes an outer sleeve top wall 111, and the outer sleeve top wall 111 includes an outer sleeve through hole 112. The shape of the outer sleeve through hole 112 is not limited, as long as it allows the cutter shaft 21 of the tool assembly 2 to rotate. The flexible sleeve 13 separates the rigid inner sleeve 12 and the rigid outer sleeve 11. This separation means that the rigid outer sleeve 11 and the rigid inner sleeve 12 do not contact each other; therefore, their structures are not limited, as long as they achieve the aforementioned function. The bearing 15 is located inside the rigid inner sleeve 12 and is axially spaced from the outer sleeve top wall 111 on the cutter shaft 21. The number of bearings 15 is not limited; for example, there can be two, three, etc. When there are at least two bearings 15, a bearing retaining spring 150 is provided between the bearings 15. The bearing 15 is not limited to a ball bearing. The oil seal 14 abuts against the bearing 15 and the top wall 111 of the outer sleeve. Here, the abutment can be direct or indirect, as long as the oil seal 14 performs a sealing function.

[0039] The cutter shaft 21 of the cutter assembly 2 passes through the oil seal 14 and connects to the bearing 15 via the outer sleeve through hole 112, and the cutter shaft 21 and the top wall 111 of the outer sleeve are separated by the oil seal 14. Here, "separated" means that there is no contact between the cutter shaft 21 and the bottom wall 111 of the outer sleeve, so that vibrations generated by the cutter assembly 2 are not transmitted to the rigid outer sleeve 11. Therefore, the method of separation is not limited, and is more... Figure 4 and Figure 7 The oil seal 14 includes a spacer portion 141 located within the outer sleeve through hole 112, thereby separating the outer sleeve top wall 111 from the cutter shaft 21. The spacer portion 141 is in sealing contact with the cutter shaft 21. Because the spacer portion 141 is located within the outer sleeve through hole 112, it better separates the cutter shaft 21 from the rigid outer sleeve 11, thus reducing the transmission of vibration from the cutter assembly 2 to the rigid outer sleeve 11.

[0040] As described above, since the bearing 15 is located inside the rigid inner sleeve 12 and connected to the blade shaft 21; the flexible sleeve 13 separates the rigid outer sleeve 11 and the rigid inner sleeve 12; and the oil seal 14 separates the outer top wall 111 of the rigid outer sleeve 11 and the blade shaft 21, the blade shaft 21 and the rigid outer sleeve 11 are separated by the flexible sleeve 13 and the oil seal 14. Therefore, the flexible sleeve 13 and the oil seal 14 isolate the vibration generated by the blade assembly 2, and the vibration generated by the blade assembly 2 will not be transmitted to the rigid outer sleeve 11, thereby reducing noise. The food processor has low noise, providing a better user experience. Furthermore, using the oil seal 14 to separate the rigid outer sleeve 11 and the blade shaft 21 is equivalent to sealing the entire bushing assembly 1 and sealing the bushing assembly 1 and the blade shaft 21. Therefore, the sealing effect is good, preventing liquids from entering the bushing assembly 1. In addition, by using an oil seal 14 to separate the bushing assembly 1 from the cutter shaft 21, the flexible sleeve 13 does not need to be equipped with a separation structure, which also makes the structure of the rigid inner sleeve 12 and the flexible sleeve 13 relatively simple.

[0041] See Figure 4 , Figure 6 and Figure 7The tool holder assembly 10 includes a rigid abutment 16. The method of assembling the rigid abutment 16 with other components of the bushing assembly 1 is not limited. In some embodiments, the bushing assembly 1 includes an abutment retainer 160, which engages with the rigid outer sleeve 11 to secure the rigid abutment 16. The rigid abutment 16 is separate from the bearings 15. The method of separation is not limited; for example, the rigid abutment 16 can be lower than the lowest bearing 15 to achieve the separation. After separation, vibrations generated by the tool assembly 2 will not be transmitted to the rigid abutment 16 via the bearings 15. The material of the rigid abutment 16 is not limited; for example, the rigid abutment 16 can be made of plastic. The separation of the rigid abutment 16 from the bearings 15 means separation from all bearings 15. Along the axial direction of the tool shaft 21, the opposite ends of the flexible sleeve 13 abut against the top wall 111 of the outer sleeve and the rigid abutment 16, respectively. The structure of the rigid abutment 16 is not limited, but at least includes a portion (as described later, abutment portion 161) that abuts against the bottom of the flexible sleeve 13 in the axial direction of the cutter shaft 21.

[0042] As described above, since the opposite ends of the flexible sleeve 13 abut against the top wall 111 of the outer sleeve and the rigid abutment 16 respectively along the axial direction of the blade shaft 21, and the rigid abutment 16 is separate from the bearing 15, this helps to reduce the vibration of the blade assembly 2 (such as the blade shaft 21) transmitted to the rigid outer sleeve 11, and also helps to reduce the movement of the bushing assembly 1. Furthermore, it further helps to reduce the vibration of the blade assembly 2 (such as the blade shaft 21) transmitted to the rigid outer sleeve 11, and ultimately, the food processor has low noise.

[0043] See Figure 4 , Figure 6 and Figure 7 The rigid abutment member 16 includes an abutment portion 161 and a blocking portion 162 extending from the abutment portion 161 toward the top wall 111 of the outer sleeve. The abutment portion 161 abuts against the soft sleeve 13, thereby... Figure 7 As shown, the lower end of the soft sleeve 13 and the rigid inner sleeve 12 as a whole is located within the cavity formed by the blocking part 162, the abutting part 161, and the bottom end of the rigid outer sleeve 11. There is a gap between the blocking part 162 and the rigid inner sleeve 12. Figure 7 The gap is shown as h. The blocking part 162 is also separate from the bearing 15. The shape of the abutting part 161 and the blocking part 162 is not limited. In this application, the abutting part 161 is arranged radially along the cutter shaft 21, and the blocking part 162 is arranged axially along the cutter shaft 21.

[0044] As described above, since the abutting part 161 abuts against the soft sleeve 13, and the blocking part 162 extends toward the top wall 111 of the outer sleeve and is spaced apart from the rigid inner sleeve 12, the abutting part 161 restricts the movement of the bushing assembly 1 in the axial direction of the blade shaft 21, and the blocking part 162 can limit the rigid inner sleeve 12 in the radial direction of the blade shaft 21, preventing the rigid inner sleeve 12 of the bushing assembly 1 from swinging too much in the radial direction of the blade shaft 21. At the same time, the gap can also prevent the movement of the bushing assembly 1 from hitting the blocking part 162, playing a pre-protection role. Finally, the above configuration helps to reduce the noise generated by the movement of the bushing assembly 1, achieving the effect of reducing noise and making the food processor quieter.

[0045] See Figure 7 and Figure 4 Along the axial direction of the cutter shaft 21, the top end 131 of the flexible sleeve 13 abuts against the top wall 111 of the outer sleeve, and the rigid inner sleeve 12 is lower than the top wall 111 of the outer sleeve. Figure 7 The height difference between the two is shown as d.

[0046] As described above, since the top end 131 of the soft sleeve 13 abuts against the top wall 111 of the outer sleeve in the axial direction of the blade shaft 21, and the rigid inner sleeve 12 is lower than the top wall 111 of the outer sleeve, this is more conducive to reducing the vibration of the blade assembly 2 (such as the blade shaft 21) from being transmitted to the rigid outer sleeve 11 through the rigid inner sleeve 12, thereby reducing noise and resulting in a lower noise level in the food processor.

[0047] See Figure 7 , Figure 6 and Figure 4 The rigid outer sleeve 11 includes an outer sleeve corner 113 that is lower than the outer sleeve through hole 112. The flexible sleeve 13 includes a flexible sleeve corner 133 that is lower than the flexible sleeve top tip 131. The number of each of the outer sleeve corner 113 and the flexible sleeve corner 133 is not limited to the two shown in the figure. Both the flexible sleeve corner 133 and the outer sleeve corner 113 are right angles or acute angles. The right angle or acute angle includes: a) the sidewalls of the flexible sleeve corner 133 and the outer sleeve corner 113 are perpendicular and connected by a chamfer; b) the sidewalls of the flexible sleeve corner 133 and the outer sleeve corner 113 are perpendicular and directly connected without being connected by a chamfer. The flexible sleeve corner abuts against the outer sleeve corner. In some embodiments, the rigid inner sleeve 12 includes an inner sleeve corner 123, which abuts against the bearing 15. In some embodiments, the number of inner sleeve corners 123 is one. If the shape of the outer ring of the bearing 15 is changed, the number of inner sleeve corners 123 and the number of corners on the bearing that mate with the inner sleeve corners 123 may also be different. The inner sleeve corner 123 abuts against the bearing 15, and the flexible sleeve corner 133 abuts against the outer sleeve corner 113, at least one of these is included.

[0048] As described above, since the flexible sleeve corner 133 abuts against the outer sleeve corner 113, and / or the inner sleeve corner 123 abuts against the bearing 15, that is, the top part of the bushing assembly 1 is pressed against each other, and combined with the rigid abutting member 16 abutting against the bottom end of the flexible sleeve 13, the upper and lower ends of the entire flexible sleeve 13 and the rigid inner sleeve 12 are pressed together, which helps to reduce the overall movement, etc., and further helps to reduce the vibration generated by the tool assembly 2 from being transmitted to the rigid outer sleeve 11, and then transmitted to the tool holder 3 through the rigid outer sleeve 11, etc., thereby achieving the effect of reducing noise.

[0049] See Figure 7 and Figure 4 The oil seal 14 includes a back surface opposite to the cutter shaft 21. The back surface includes a plurality of protrusions 143. These protrusions 143 are axially spaced apart from the cutter shaft 21. The number of protrusions 143 is not limited to the three shown in the figure; it can be two, four, etc. The shape of the protrusions 143 is not limited; for example, the cross-section of the protrusions 143 can be arc-shaped, thus allowing for... Figure 7 As shown in the cross-section, the protrusions 143 are arranged in a wavy pattern at intervals. The protrusions 143 can also be rings formed by sheet-like structures. All of the protrusions 143 abut against the rigid inner sleeve 12.

[0050] As described above, since the multiple protrusions 143 are spaced apart and all abut against the rigid inner sleeve 12, this design reduces the contact between the oil seal 14 and the rigid inner sleeve 12, which helps to reduce the transmission of vibration from the blade assembly 2 to the rigid inner sleeve 12, and consequently, reduces the transmission of vibration from the blade assembly 2 to the rigid outer sleeve 11. Furthermore, the multiple protrusions 143 abutting against the rigid inner sleeve 12 provide multiple seals, which also helps to prevent water and other contaminants from spreading along the inner sleeve. Figure 7 The dotted line direction enters the bushing assembly, and combined with the separation part 141 to seal the cutter shaft 21, the sealing effect is better.

[0051] See Figure 4 , Figure 6 and Figure 7 The rigid inner sleeve 12 and the soft sleeve 13 are injection molded as a whole, and the rigid inner sleeve 12 and the soft sleeve 13 are pressed into the rigid outer sleeve 11 as a whole.

[0052] As described above, the rigid inner sleeve 12 and the soft sleeve 13 are injection molded as one piece and pressed into the rigid outer sleeve 11, which helps to improve concentricity and thus avoid noise caused by misalignment, resulting in low noise in the food processor.

[0053] See Figure 6 and Figure 4The blade holder assembly 10 includes a blade holder 3, which includes a blade holder cavity 31 for mounting the bushing assembly 1. The bushing assembly 1 and the blade holder cavity 31 are inserted into and injection molded as a single unit. Furthermore, the blade holder assembly 10 includes a blade holder sealing ring 4, a clutch 5, and a gasket 6. The blade holder sealing ring 4 seals the gap between the blade holder 3 and the mixing cup. The clutch 5 connects to a clutch on the main unit to drive the blade assembly 2 to rotate. The gasket 6 is assembled with the blade shaft 21 to prevent the blade 22 from dislodging.

[0054] As described above, the bushing assembly 1 is inserted into the blade holder cavity 31 and injection molded as a whole. This helps to improve concentricity and thus avoid noise caused by misalignment, resulting in a low noise level in the food processor.

[0055] See Figure 6 The height of the bushing assembly 1 along the axial direction of the tool shaft 21 is h, and the depth to which the bushing assembly 1 is inserted into the tool holder cavity 31 is at least h / 2.

[0056] As described above, the bushing assembly 1 is inserted into the blade holder cavity 31 to a depth of at least h / 2. During the rotation of the blade assembly 2 of the blade holder assembly 10, this depth helps to ensure that the bushing assembly 1 will not tilt relative to the blade holder 3. When the bushing assembly 1 is tilted, noise is easily generated. Therefore, the above setting helps to reduce noise, resulting in a low noise level in the food processor.

[0057] See Figure 6 and Figure 3 The blade assembly includes blades 22 connected to the blade shaft 21. The number and shape of the blades 22 are not limited, as long as they can process food. The blade holder 3 includes an upper blade holder 32 and a lower blade holder 33. The upper blade holder 32 is used for assembly with the bushing assembly 1, and the cross-sectional area of ​​the upper blade holder 32 along the radial direction of the blade shaft 21 gradually increases away from the blades 22 until it connects with the lower blade holder 33. The shape for achieving this gradual increase is not limited; for example, the upper blade holder 32 can be frustum-shaped, truncated pyramid-shaped, etc. The lower blade holder 33 is used for assembly with the mixing cup. For example, the top of the lower blade holder 33 is fitted with a blade holder sealing ring 4, and the top of the lower blade holder 33 abuts against the mixing cup 20. Any components can be placed between them.

[0058] As described above, since the blade holder 3 includes an upper blade holder 32 and a lower blade holder 33, the cross-sectional area of ​​the upper blade holder 32 along the radial direction of the blade shaft gradually increases in the direction away from the blade until it connects with the lower blade holder. In this way, the larger the downward part of the blade holder 3 is, the more stable the blade holder assembly 10 is during operation, and the less likely it is to generate noise due to shaking, etc., resulting in low noise in the food processor.

[0059] See Figure 1 and Figure 2This application discloses a food processor. The food processor includes a motor 30, a blending cup 20, and any of the aforementioned blade assembly 10; the motor 30 drives the blades 22 of the blade assembly 2 to rotate within the blending cup 20. In some embodiments, the blade assembly 10 and the blending cup 20 constitute a blending cup assembly 100. The motor 30 and the main unit housing 40 constitute a main unit assembly 200. The blending cup assembly 100 and the main unit assembly 200 may or may not be separate structures.

[0060] As described above, the food processor has at least the beneficial effects of the blade assembly 10, such as low noise.

[0061] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A tool holder assembly characterized by, The tool holder assembly includes a bushing assembly (1) and a tool assembly (2), wherein: The blade assembly (2) includes a blade shaft (21); The bushing assembly (1) includes a rigid outer sleeve (11), a rigid inner sleeve (12), a flexible sleeve (13), an oil seal (14), and a bearing (15); the flexible sleeve (13) separates the rigid inner sleeve (12) and the rigid outer sleeve (11); the rigid outer sleeve (11) includes an outer sleeve top wall (111), and the outer sleeve top wall (111) includes an outer sleeve through hole (112); the bearing (15) is located inside the rigid inner sleeve (12) and is axially spaced from the outer sleeve top wall (111) on the cutter shaft (21); The oil seal (14) abuts against the bearing (15) and the top wall of the outer sleeve (111); the cutter shaft (21) passes through the oil seal (14) through the through hole (112) of the outer sleeve and is connected to the bearing (15), and the cutter shaft (21) and the top wall of the outer sleeve (111) are separated by the oil seal (14).

2. The tool holder assembly according to claim 1, characterized in that, The tool holder assembly (10) includes a rigid abutment (16) which is separate from the bearing (15). Along the axial direction of the tool shaft (21), the opposite ends of the soft sleeve (13) abut against the outer sleeve top wall (111) and the rigid abutment (16).

3. The tool holder assembly according to claim 2, characterized in that, The rigid abutment (16) includes an abutment portion (161) and a blocking portion (162) extending from the abutment portion (161) toward the top wall (111) of the outer sleeve; the abutment portion (161) abuts against the soft sleeve (13); the blocking portion (162) has a gap between itself and the rigid inner sleeve (12) and is separate from the bearing (15).

4. The tool holder assembly according to claim 2, characterized in that, The rigid outer sleeve (11) includes an outer sleeve corner (113) lower than the outer sleeve through hole (112); the flexible sleeve (13) includes a flexible sleeve top end (131) abutting against the top wall (111) of the outer sleeve and a flexible sleeve corner (133) lower than the flexible sleeve top end (131); the flexible sleeve corner (133) and the outer sleeve corner (113) abut against each other and are both right angles or acute angles; And / or, the rigid inner sleeve (12) includes an inner sleeve corner (123) that abuts against the bearing (15).

5. The tool holder assembly according to claim 1, characterized in that, The soft sleeve (13) includes a soft sleeve top end (131) that abuts against the outer sleeve top wall (111) in the axial direction of the cutter shaft (21), and the rigid inner sleeve (12) is lower than the outer sleeve top wall (111).

6. The tool holder assembly according to claim 1, characterized in that, The oil seal (14) includes an oil seal back opposite to the cutter shaft (21), the oil seal back includes a plurality of protrusions (143), the plurality of protrusions (143) are axially spaced on the cutter shaft (21) and all abut against the rigid inner sleeve (12); And / or, the oil seal (14) includes a spacer (141) located within the outer casing through hole (112).

7. The tool holder assembly according to claim 1, characterized in that, The rigid inner sleeve (12) and the soft sleeve (13) are injection molded as one piece, and the rigid inner sleeve (12) and the soft sleeve (13) are pressed into the rigid outer sleeve (11) as a whole; And / or, the tool holder assembly includes a tool holder (3), the tool holder (3) includes a tool holder cavity (31) for mounting the bushing assembly (1), the bushing assembly (1) and the tool holder cavity (31) are inserted and injection molded together.

8. The tool holder assembly according to claim 7, characterized in that, The height of the bushing assembly (1) along the axial direction of the cutter shaft (21) is h, and the depth to which the bushing assembly (1) is inserted into the cutter holder cavity (31) is at least h / 2.

9. The tool holder assembly according to claim 1, characterized in that, The blade assembly (2) includes a blade (22) connected to the blade shaft (21); the blade holder assembly includes a blade holder (3), which includes an upper blade holder (32) and a lower blade holder (33). The upper blade holder (32) is used for assembly with the bushing assembly (1), and the cross-sectional area of ​​the upper blade holder (32) along the radial direction of the blade shaft (21) gradually increases away from the blade (22) until it is connected to the lower blade holder (33); the lower blade holder (33) is used for assembly with the stirring cup.

10. A food processor, characterized in that, The food processor includes a motor (30), a mixing cup (20), and a blade assembly (10) according to any one of claims 1 to 9; the motor (30) drives the blades (22) of the blade assembly (2) to rotate within the mixing cup (20).

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