Silent high efficiency hand held electric beater

Abstract

The utility model discloses a kind of mute high-efficiency handheld electric mixer, including one end opening and the hollow handle shell of being in the shape and the port cover being set in handle shell opening, vibration-damping structure and motor body are set in handle shell, vibration-damping structure includes upper end cover, lower end cover, first rubber sleeve, second rubber sleeve, third rubber sleeve and fourth rubber sleeve, motor body is installed between upper end cover and lower end cover, the convex ring of lap is formed on the outer peripheral surface of lower end cover end face, and the first rubber sleeve of the abutment of handle shell inner wall is sleeved in the outer peripheral edge of upper end cover top corner portion, the second rubber sleeve of the abutment of upper end cover inner wall is sleeved in the outer edge of motor body top corner portion, third rubber sleeve is sleeved in the outer peripheral surface of lower end cover, and the fourth rubber sleeve of the abutment of lower end cover inner wall is sleeved in the outer peripheral edge of motor body bottom corner portion. The utility model can cut off the vibration between motor body and handle shell by multiple vibration damping, reduce the generation of noise.

Description

Technical Field

[0001] This utility model relates to the field of mixer technology, specifically a quiet and efficient handheld electric mixer. Background Technology

[0002] With the continuous improvement of living standards, blenders have gradually become a common household item. Among them, hand-held blenders have become a popular choice for home use due to their portability and ease of operation. Hand-held blenders can be used to make juice, egg mixture, milk, and coffee.

[0003] Most common handheld blenders consist of a housing for mounting the motor, a mixing shaft connected to the motor, and blades mounted on the mixing shaft. During operation, the motor drives the blades to rotate via the mixing shaft. In this process, the motor itself vibrates, and this vibration is transmitted to the housing, generating vibration and noise. In addition, the blades also transmit torque to the housing and the motor output shaft during blending, resulting in increased overall vibration amplitude and relatively loud noise during operation, leading to a poor user experience. Utility Model Content

[0004] The purpose of this invention is to provide a quiet and efficient handheld electric mixer that can isolate the vibration transmission between the motor and the mixing shaft, thereby reducing vibration and noise and making the machine run more smoothly, so as to solve the problem of excessive vibration and noise in existing handheld mixers mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A quiet and efficient handheld electric mixer includes a hollow handle housing with one open end and a port cover disposed at the opening of the handle housing. The handle housing contains a vibration damping structure and a motor body. The vibration damping structure includes an upper cover, a lower cover, a first rubber sleeve, a second rubber sleeve, a third rubber sleeve, and a fourth rubber sleeve. The motor body is mounted between the upper and lower covers, which are arranged vertically opposite each other. A convex ring is formed on the outer circumference of the lower cover, overlapping the end face of the port cover. The first rubber sleeve, which abuts against the inner wall of the handle housing, is fitted onto the outer periphery of the top corner of the upper cover. The second rubber sleeve, which abuts against the inner wall of the upper cover, is fitted onto the outer edge of the top corner of the motor body. The third rubber sleeve, close to the convex ring, is fitted onto the outer circumference of the lower cover and is held by the lower cover, the convex ring, and the port cover. The fourth rubber sleeve, which abuts against the inner wall of the lower cover, is fitted onto the outer periphery of the bottom corner of the motor body.

[0007] Preferably, the upper inner wall of the handle housing is provided with a first annular groove, and the outer periphery of the top corner of the upper end cover is provided with a second annular groove. The first groove, the outer wall of the upper end cover and the second groove form an annular first L-shaped groove, and the first rubber sleeve is embedded in the first L-shaped groove.

[0008] Preferably, the first groove sidewall is formed with a first support edge extending upward to the outer peripheral surface of the end cap, and the first support edge is supported at the bottom end of the first rubber sleeve.

[0009] Preferably, the bottom surface of the upper end cover is provided with a receiving groove, and the top surface of the motor body has an extension extending upward into the receiving groove. The side of the extension and the side wall of the receiving groove, the top surface of the motor body, and the bottom surface of the upper end cover form an annular second L-shaped groove, and the second rubber sleeve is embedded in the second L-shaped groove.

[0010] Preferably, the top of the second rubber sleeve has an overlapping portion that overlaps the top surface of the extension, and the longitudinal section of the second rubber sleeve is Z-shaped.

[0011] Preferably, the lower end cover has a through hole in the middle, a cavity is formed between the port cover and the lower end cover, the port cover has a perforation in the middle, and a protective cover is fitted on the outer periphery of the port cover.

[0012] Preferably, the bottom wall of the protective cover has an insertion part that is inserted upward into the perforation, the upper part of the insertion part has a recessed receiving space, the lower part of the insertion part has an insertion groove extending into the receiving space, and a partition with a central hole is formed between the insertion groove and the receiving space.

[0013] Preferably, the output shaft of the motor body is connected to a stirring assembly, which includes a sleeve, a bushing, a stirring shaft, and a blade. One end of the sleeve, located in the accommodating space, is connected to the output shaft of the motor body. The bushing is inserted into the sleeve. The top end of the stirring shaft is connected to the bushing. The bottom end of the stirring shaft passes downward through a partition and a insertion slot in sequence. The blade is connected to the bottom end of the stirring shaft.

[0014] Preferably, a shaft sleeve is fitted around the outer periphery of the stirring shaft, the top end of the shaft sleeve is inserted into a groove, and a splash guard is connected to the bottom end of the shaft sleeve surrounding the blade; an oil seal and an oil-impregnated bearing are sequentially fitted on the outer periphery of the connection between the stirring shaft and the splash guard, and an anti-vibration rubber sleeve is fitted on the outer periphery of the oil-impregnated bearing, with the outer periphery of the anti-vibration rubber sleeve abutting against the inner wall of the shaft sleeve.

[0015] Preferably, the stirring shaft has an annular limiting groove on its outer peripheral surface near the oil-impregnated bearing, and the outer peripheral surface of the stirring shaft is fitted with a wear-resistant washer that abuts against the oil-impregnated bearing and an O-ring that abuts against the wear-resistant washer. The inner ring of the O-ring protrudes upward and extends into the limiting groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting a first rubber sleeve between the handle housing and the upper end cover, and a second rubber sleeve between the upper end cover and the motor body, and by setting a third rubber sleeve between the port end cover and the lower end cover, and a fourth rubber sleeve between the lower end cover and the motor body, the vibration between the motor body and the handle housing can be isolated through the multiple vibration reduction of the first, second, third, and fourth rubber sleeves, thereby reducing the vibration of the handle housing. At the same time, the first, second, third, and fourth rubber sleeves also have a certain sealing effect, which can reduce the noise generated by the motor body and transmitted to the handle housing; greatly reducing the generation of noise; and at the same time, the vibration transmitted from the stirring shaft to the shaft cylinder is isolated by the anti-vibration rubber sleeve, further reducing the generation of vibration and noise, making the stirrer run more smoothly and improving the user experience. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the silent and efficient handheld electric mixer of this utility model;

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is a cross-sectional view of the lower part of the handle housing of this utility model;

[0020] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0021] Figure 5 This is a cross-sectional view of the lower part of the shaft cylinder of this utility model.

[0022] In the diagram: 1. Handle housing; 101. First groove; 102. First support flange; 2. Port cover; 21. Second support flange; 3. Vibration damping structure; 31. Upper end cover; 311. Second groove; 312. Receiving groove; 32. Lower end cover; 321. Protruding ring; 33. First rubber sleeve; 34. Second rubber sleeve; 35. Third rubber sleeve; 36. Fourth rubber sleeve; 4. Motor body; 41. Extension; 5. Protective cover; 51. Insertion part; 511. Receiving space; 512. Insertion groove; 513. Partition; 6. Stirring assembly; 61. Sleeve; 62. Shaft sleeve; 63. Stirring shaft; 631. Limiting groove; 64. Blade; 7. Anti-reverse washer; 8. Shaft cylinder; 9. Splash guard; 10. Oil seal; 11. Oil-impregnated bearing; 12. Anti-vibration rubber sleeve; 13. Wear-resistant washer; 14. O-ring spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 A quiet and efficient handheld electric mixer includes a hollow handle housing 1 with one open end and a port cover 2 disposed at the opening of the handle housing 1. A vibration damping structure 3 and a motor body 4 are disposed inside the handle housing 1. The vibration damping structure 3 includes an upper end cover 31, a lower end cover 32, a first rubber sleeve 33, a second rubber sleeve 34, a third rubber sleeve 35, and a fourth rubber sleeve 36. The motor body 4 is installed between the upper end cover 31 and the lower end cover 32, which are arranged vertically opposite each other. (See also...) Figure 4 The outer peripheral surface of the lower end cover 32 forms a protruding ring 321 that overlaps the end face of the port cover 2. Please refer to [link / reference]. Figure 2 A first rubber sleeve 33, which abuts against the inner wall of the handle housing 1, is fitted onto the outer periphery of the top corner of the upper end cover 31. A second rubber sleeve 34, which abuts against the inner wall of the upper end cover 31, is fitted onto the outer edge of the top corner of the motor body 4. Please refer to [link / reference]. Figure 4 The third rubber sleeve 35, which is close to the convex ring 321, is fitted on the outer peripheral surface of the lower end cover 32 and is held by the lower end cover 32, the convex ring 321 and the port cover 2. The fourth rubber sleeve 36, which abuts against the inner wall of the lower end cover 32, is fitted on the outer periphery of the bottom corner of the motor body 4.

[0025] In this embodiment, the first rubber sleeve 33, the second rubber sleeve 34, the third rubber sleeve 35, and the fourth rubber sleeve 36 are all made of silicone.

[0026] By setting a first rubber sleeve 33 between the handle housing 1 and the upper end cover 31, and a second rubber sleeve 34 between the upper end cover 31 and the motor body 4, and by setting a third rubber sleeve 35 between the port cover 2 and the lower end cover 32, and a fourth rubber sleeve 36 between the lower end cover 32 and the motor body 4, the vibration between the motor body 4 and the handle housing 1 can be isolated through the multiple vibration damping of the first rubber sleeve 33, the second rubber sleeve 34, the third rubber sleeve 35 and the fourth rubber sleeve 36, thereby reducing the vibration of the handle housing 1. At the same time, the first rubber sleeve 33, the second rubber sleeve 34, the third rubber sleeve 35 and the fourth rubber sleeve 36 also have a certain sealing effect, which can reduce the noise generated by the motor body 4 and transmitted to the handle housing 1; greatly reducing the generation of noise and improving the user experience.

[0027] Please see Figure 2The upper inner wall of the handle housing 1 has a first annular groove 101, and the outer periphery of the top corner of the upper end cover 31 has a second annular groove 311. The first groove 101, the outer wall of the upper end cover 31, and the second groove 311 form an annular first L-shaped groove, and the first rubber sleeve 33 is embedded in the first L-shaped groove. In this embodiment, the side wall of the first groove 101 forms a first support edge 102 extending to the outer periphery of the upper end cover 31. The first support edge 102 supports the bottom end of the first rubber sleeve 33 and is used to limit the relative sliding of the first rubber sleeve 33.

[0028] Please see Figure 2 The bottom surface of the upper end cover 31 has a receiving groove 312, and the top surface of the motor body 4 has an extension 41 extending upward into the receiving groove 312. The side of the extension 41 forms an annular second L-shaped groove with the side wall of the receiving groove 312, the top surface of the motor body 4, and the bottom surface of the upper end cover 31. The second rubber sleeve 34 is embedded in the second L-shaped groove. In this embodiment, the top of the second rubber sleeve 34 has an overlapping portion that overlaps with the top surface of the extension 41. The longitudinal section of the second rubber sleeve 34 is Z-shaped. The Z-shaped structure helps the second rubber sleeve 34 to fit tightly onto the motor body 4 and prevents it from loosening.

[0029] Please see Figure 4 The third rubber sleeve 35 has an inverted L-shaped longitudinal section. The upper part of the third rubber sleeve 35 overlaps the end face of the port cover 2 and is held by the protruding ring 321 and the port cover 2. The lower part of the third rubber sleeve 35 extends downward into the gap formed by the port cover 2 and the lower end cover 32. The inner wall of the port cover 2 has a second support edge 21 extending into the gap, which is supported by the bottom end of the third rubber sleeve 35. In this embodiment, the fourth rubber sleeve 36 has the same structure as the third rubber sleeve 35, and will not be described again here.

[0030] Please see Figure 3 The lower end cover 32 has a through hole in the middle for the output shaft of the motor body 4 to pass through. A cavity is formed between the port cover 2 and the lower end cover 32. The port cover 2 has a through hole in the middle. A protective cover 5 is fitted on the outer periphery of the port cover 2. The bottom wall of the protective cover 5 has a plug-in part 51 that is inserted upward into the through hole. The upper part of the plug-in part 51 has a recessed receiving space 511. The lower part of the plug-in part 51 has a plug groove 512 that extends into the receiving space 511. A partition 513 with a central hole is formed between the plug groove 512 and the receiving space 511.

[0031] Please see Figure 3The output shaft of the motor body 4 is connected to a stirring assembly 6, which includes a sleeve 61, a bushing 62, a stirring shaft 63, and a blade 64. One end of the sleeve 61, located within the accommodating space 511, is connected to the output shaft of the motor body 4. A limiting groove is provided on the inner wall of the other end of the sleeve 61, and a limiting protrusion adapted to the limiting groove is provided on the outer circumferential surface of the bushing 62. In this embodiment, the limiting groove is evenly distributed along the circumferential direction on the inner wall of the sleeve 61, and the limiting protrusion is evenly distributed along the circumferential direction on the outer circumferential surface of the bushing 62. The bushing 62 is inserted into the sleeve 61. The top end of the stirring shaft 63 is connected to the bushing 62, and the bottom end of the stirring shaft 63 passes downward through the partition 513 and the insertion groove 512. The blade 64 is connected to the bottom end of the stirring shaft 63. The limiting groove and the limiting protrusion work together to limit the movement. During operation, the motor body 4 drives the sleeve 61, bushing 62, stirring shaft 63, and blade 64 to rotate together for stirring or chopping. In this embodiment, the motor body 4 adopts existing motor technology, and its structural principle will not be described in detail here.

[0032] The stirring shaft 63 is fitted with a retaining washer 7 fixed on the partition plate 513. The stirring shaft 63 is provided with a locking protrusion on its outer periphery. The axial movement of the stirring shaft 63 is restricted by the cooperation between the retaining washer 7 and the locking protrusion.

[0033] A shaft sleeve 8 is fitted around the outer periphery of the stirring shaft 63. The top end of the shaft sleeve 8 is inserted into the insertion groove 512, and the bottom end of the shaft sleeve 8 is connected to a splash guard 9 surrounding the blade 64. Please refer to [link / reference]. Figure 5 An oil seal 10 and an oil-impregnated bearing 11 are sequentially fitted onto the outer circumferential surface of the connection between the stirring shaft 63 and the splash guard 9. The outer circumferential surface of the oil seal 10 abuts against the inner wall of the shaft cylinder 8 to prevent oil leakage. A shock-absorbing rubber sleeve 12 is fitted onto the outer circumferential surface of the oil-impregnated bearing 11. The outer circumferential surface of the shock-absorbing rubber sleeve 12 abuts against the inner wall of the shaft cylinder 8 to isolate the vibration transmission of the stirring shaft 63 and reduce noise generation. In this embodiment, one end face of the oil-impregnated bearing 11 abuts against the end face of the splash guard 9, and the other end face abuts against the end face of the shock-absorbing rubber sleeve 12.

[0034] Please refer to Figure 5 An annular limiting groove 631 is provided on the outer peripheral surface of the stirring shaft 63 near the oil-impregnated bearing 11. A wear-resistant washer 13 and an O-ring spring 14 that abut against the oil-impregnated bearing 11 are fitted on the outer peripheral surface of the stirring shaft 63. The inner ring of the O-ring spring 14 protrudes upward and extends into the limiting groove 631. The wear-resistant washer 13 plays a wear-resistant role during the stirring process of the stirring shaft 63, and the O-ring spring 14 plays a role in preventing the stirring shaft 63 from moving backward.

[0035] In summary, this utility model provides a quiet and efficient handheld electric mixer. By providing a first rubber sleeve 33, a second rubber sleeve 34, a third rubber sleeve 35, and a fourth rubber sleeve 36 in corresponding parts, the above-mentioned multiple vibration reduction design isolates the vibration transmitted from the motor body 4 to the handle housing 1, thereby reducing vibration and noise in the handle housing 1. At the same time, the vibration transmitted from the stirring shaft 63 to the shaft cylinder 8 is isolated by the anti-vibration rubber sleeve 12, further reducing vibration and noise generation, making the mixer run more smoothly and improving the user experience.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quiet and efficient handheld electric mixer, comprising a hollow handle housing (1) with one open end and a port cover (2) disposed at the opening of the handle housing (1), characterized in that: The handle housing (1) is provided with a vibration damping structure (3) and a motor body (4). The vibration damping structure (3) includes an upper end cover (31), a lower end cover (32), a first rubber sleeve (33), a second rubber sleeve (34), a third rubber sleeve (35), and a fourth rubber sleeve (36). The motor body (4) is installed between the upper end cover (31) and the lower end cover (32), which are arranged vertically opposite each other. The outer circumferential surface of the lower end cover (32) forms a protruding ring (321) that overlaps the end face of the port cover (2) and the handle housing (1). The first rubber sleeve (33) that abuts against the inner wall is fitted on the outer periphery of the top corner of the upper end cover (31). The second rubber sleeve (34) that abuts against the inner wall of the upper end cover (31) is fitted on the outer edge of the top corner of the motor body (4). The third rubber sleeve (35) that is close to the convex ring (321) is fitted on the outer periphery of the lower end cover (32) and is held by the lower end cover (32), the convex ring (321) and the port cover (2). The fourth rubber sleeve (36) that abuts against the inner wall of the lower end cover (32) is fitted on the outer periphery of the bottom corner of the motor body (4).

2. The silent and efficient handheld electric mixer according to claim 1, characterized in that: The upper inner wall of the handle housing (1) is provided with a first groove (101) in the shape of an annulus, and the outer periphery of the top corner of the upper end cover (31) is provided with a second groove (311) in the shape of an annulus. The first groove (101), the outer wall of the upper end cover (31) and the second groove (311) form a first L-shaped groove in the shape of an annulus. The first rubber sleeve (33) is embedded in the first L-shaped groove.

3. The silent and efficient handheld electric mixer according to claim 2, characterized in that: The first groove (101) has a first support edge (102) extending upward to the outer peripheral surface of the end cap (31) on its sidewall, and the first support edge (102) is supported at the bottom end of the first rubber sleeve (33).

4. The silent and efficient handheld electric mixer according to claim 1, characterized in that: The bottom surface of the upper end cover (31) is provided with a receiving groove (312), and the top surface of the motor body (4) has an extension (41) extending upward into the receiving groove (312). The side of the extension (41) forms an annular second L-shaped groove with the side wall of the receiving groove (312), the top surface of the motor body (4), and the bottom surface of the upper end cover (31). The second rubber sleeve (34) is embedded in the second L-shaped groove.

5. The silent and efficient handheld electric mixer according to claim 4, characterized in that: The second rubber sleeve (34) has an overlap portion at the top of the extension (41), and the longitudinal section of the second rubber sleeve (34) is Z-shaped.

6. The silent and efficient handheld electric mixer according to any one of claims 1-5, characterized in that: The lower end cover (32) has a through hole in the middle, and a cavity is formed between the port cover (2) and the lower end cover (32). The port cover (2) has a perforation in the middle, and a protective cover (5) is fitted on the outer periphery of the port cover (2).

7. The silent and efficient handheld electric mixer according to claim 6, characterized in that: The bottom wall of the protective cover (5) has an insertion part (51) that is inserted upward into the perforation. The upper part of the insertion part (51) has a recessed receiving space (511), and the lower part of the insertion part (51) has an insertion groove (512) that extends into the receiving space (511). A partition (513) with a central hole is formed between the insertion groove (512) and the receiving space (511).

8. The silent and efficient handheld electric mixer according to claim 7, characterized in that: The output shaft of the motor body (4) is connected to a stirring assembly (6). The stirring assembly (6) includes a sleeve (61), a bushing (62), a stirring shaft (63), and a blade (64). One end of the sleeve (61), located in the accommodating space (511), is connected to the output shaft of the motor body (4). The bushing (62) is inserted into the sleeve (61). The top end of the stirring shaft (63) is connected to the bushing (62). The bottom end of the stirring shaft (63) passes downward through the partition (513) and the insertion groove (512). The blade (64) is connected to the bottom end of the stirring shaft (63).

9. The silent and efficient handheld electric mixer according to claim 8, characterized in that: The stirring shaft (63) is fitted with a shaft sleeve (8) on its outer periphery. The top end of the shaft sleeve (8) is inserted into the insertion groove (512). The bottom end of the shaft sleeve (8) is connected to a splash guard (9) surrounding the blade (64). An oil seal (10) and an oil-impregnated bearing (11) are sequentially fitted on the outer periphery of the connection between the stirring shaft (63) and the splash guard (9). An anti-vibration rubber sleeve (12) is fitted on the outer periphery of the oil-impregnated bearing (11). The outer periphery of the anti-vibration rubber sleeve (12) abuts against the inner wall of the shaft sleeve (8).

10. The silent and efficient handheld electric mixer according to claim 9, characterized in that: The stirring shaft (63) has an annular limiting groove (631) on its outer peripheral surface near the oil-impregnated bearing (11). The stirring shaft (63) is fitted with a wear-resistant washer (13) that abuts against the oil-impregnated bearing (11) and an O-ring spring (14) that abuts against the wear-resistant washer (13). The inner ring of the O-ring spring (14) protrudes upward and extends into the limiting groove (631).

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