An overhead electric mixer with morse taper collet chuck

Abstract

The utility model provides a kind of top-mounted electric mixer with Morse connection chuck, it is related to electric mixer technical field, including shell, drive shaft, chuck, stirring paddle, the drive shaft includes shaft body, the shaft body is equipped with the through-hole of shaft that can be passed by stirring paddle, the shaft body is rotationally arranged in shell by bearing, the lower part of the shaft body is provided with outer Morse taper, the chuck is used to fix stirring paddle, the inner sleeve of the chuck is equipped with the inner Morse taper that is compatible with outer Morse taper.The top-mounted electric mixer with Morse connection chuck, chuck is connected between drive shaft by Morse taper, and the two are pressed together by Morse taper, compared with the mode of traditional screw fixation, chuck and drive shaft are connected closely, without gap, and coaxiality is good.No special custom-made parts are needed, the price is low, the cost advantage is big, and the product application range is wide.

Description

Technical Field

[0001] This utility model relates to the field of electric mixer technology, specifically a top-mounted electric mixer with a Morse code connector. Background Technology

[0002] Existing top-mounted electric mixers with penetrable impellers use chucks to hold the impeller in place. However, commonly used chucks have several drawbacks. First, these chucks are custom-made to fit the impeller dimensions, and these custom-made chucks are often very expensive, costing several times more than ordinary chucks. This high cost limits their use to high-end products, resulting in minimal cost advantage and significant limitations in product application. Second, the connection between the chuck and the shaft is achieved using horizontally positioned set screws, leaving a gap between them and resulting in poor coaxiality and significant oscillation gaps during mixing.

[0003] This case arose from the aforementioned issues. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a top-mounted electric stirrer with a Morse code connecting clamp, which solves the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a top-mounted electric stirrer with a Morse taper chuck, comprising a housing, a drive shaft, a chuck, and a stirring paddle. The drive shaft includes a shaft body, the shaft body having a through-shaft hole through which the stirring paddle can pass. The shaft body is rotatably mounted in the housing via a bearing. The lower part of the shaft body is provided with an outer Morse taper. The chuck is used to fix the stirring paddle, and the inner sleeve of the chuck is provided with an inner Morse taper that matches the outer Morse taper.

[0008] Preferably, the middle section of the shaft body is provided with a thread above the chuck, and the external thread of the thread is connected to a nut.

[0009] Preferably, the driving direction of the stirring paddle is opposite to the tightening direction of the nut and thread.

[0010] Preferably, a retaining ring is provided at the bottom of the housing outside the nut.

[0011] Preferably, the shaft body has a limiting hole laterally opened above the thread, and the side of the retaining ring has an avoidance hole corresponding to the limiting hole.

[0012] Preferably, the housing is further provided with a drive device, which includes a motor and two pulleys. The two pulleys are respectively mounted on the shaft and the output shaft of the motor, and the two pulleys are connected by belt drive.

[0013] Preferably, the housing is further provided with a connecting rod.

[0014] (III) Beneficial Effects

[0015] This utility model provides a top-mounted electric mixer with a Morse code coupling. It features the following:

[0016] Beneficial effects:

[0017] 1. This top-mounted electric mixer with Morse taper connector uses a Morse taper connection between the connector and the drive shaft. The two are tightly fitted together via Morse taper compression, resulting in a tighter connection between the connector and drive shaft compared to traditional screw-based fixing. This method eliminates gaps and ensures better coaxiality. Furthermore, it requires no special custom parts, is inexpensive, offers significant cost advantages, and has a wide range of applications. Attached Figure Description

[0018] Figure 1 This is an external isometric view of the present invention;

[0019] Figure 2 This is a cross-sectional view of the present invention in its working state;

[0020] Figure 3 This is a cross-sectional view of the disassembled state of this utility model;

[0021] Figure 4 This is an external schematic diagram of the disassembled state of this utility model;

[0022] Figure 5 This is a sectional view of the drive shaft of this utility model;

[0023] Figure 6 This is a cross-sectional view of the clamp of this utility model.

[0024] In the diagram: 1. Housing, 2. Drive shaft, 3. Chuck, 4. Agitator, 5. Connecting rod, 6. Nut, 7. Retaining ring, 8. Clearance hole, 9. Through hole, 10. Bearing, 11. Motor, 12. Pulley, 21. Shaft body, 22. Through shaft hole, 23. Limiting hole, 24. Thread, 25. External Morse taper, 31. Outer sleeve, 32. Inner sleeve, 33. Locking claw, 34. Internal Morse taper. Detailed Implementation

[0025] This utility model embodiment provides a top-mounted electric mixer with a Morse code coupling, such as... Figure 1-6 As shown, it includes a housing 1, a drive shaft 2, a chuck 3, and a stirring paddle 4.

[0026] like Figure 2 and Figure 5 As shown, the drive shaft 2 includes a shaft body 21, and the shaft body 21 is provided with a through hole 22 through which the stirring paddle 4 can pass.

[0027] The upper part of the shaft 21 is disposed inside the housing 1 and is rotatably disposed inside the housing 1 via the bearing 10. A drive device is also disposed inside the housing 1, which includes a motor 11 and two pulleys 12. The motor 11 is fixed inside the housing 1, and the two pulleys 12 are respectively disposed on the shaft 21 and the output shaft of the motor 11, and the two pulleys 12 are connected by belt drive. The motor 11 drives the shaft 21 to rotate through the pulleys 12.

[0028] The lower part of the shaft body 21 is provided with an outer Morse taper 25, and the chuck 3 is used to fix the stirring paddle 4. The inner sleeve 32 of the chuck 3 is provided with an inner Morse taper 34 that matches the outer Morse taper 25.

[0029] The chuck 3 includes an outer sleeve 31, an inner sleeve 32, and a locking claw 33. The chuck 3 is prior art; for details, please refer to the rotary chuck for electric drills with publication number CN219901106U. The outer sleeve 31 is equivalent to a connecting seat, the inner sleeve 32 is equivalent to a drill chuck, and the locking claw 33 is equivalent to a clamping claw. When the inner sleeve 32 and the outer sleeve 31 rotate relative to each other, they can drive the locking claw 33 to move radially, thereby clamping the agitator 4.

[0030] The collet 3 and the drive shaft 2 are connected via a Morse taper, and the two are pressed together by the Morse taper. Compared with the traditional method of fixing with screws, the connection between the collet 3 and the drive shaft 2 is tight, with no gaps and better coaxiality. Moreover, no special custom parts are required, the price is low, the cost advantage is great, and the product has a wide range of applications.

[0031] The shaft of the agitator 4 can pass through the inner sleeve 32, the shaft body 21 and the through hole 9 at the top of the housing 1 in sequence.

[0032] The middle section of the shaft 21, located above the chuck 3, has a thread 24, with a nut 6 connected to the external thread of the thread 24. The driving direction of the agitator 4 is opposite to the tightening direction of the nut 6 and the thread 24. The specific thread direction is determined by the overall agitator direction. This ensures that when the agitator is rotating, the nut 6 is tightened in the direction away from the chuck 3, i.e., upwards, preventing the nut 6 from shifting downwards during the agitation process.

[0033] like Figure 2 As shown, during installation, tighten the nut 6 onto the thread 24 on the shaft 21, tightening it towards the top. The length and position of the thread 24 are such that when the nut 6 is tightened, the distance H2 between the upper end face of the nut 6 and the bottom surface of the housing 1 is greater than 0.5mm to prevent interference between the nut 6 and the bottom surface of the housing 1; and the distance H1 between the lower end face of the nut 6 and the upper end face of the chuck 3 is greater than 0.5mm to prevent interference between the nut 6 and the chuck 3.

[0034] During disassembly, by turning the nut 6 downwards, the downward force is released and the collet 3 is pushed out, thus completing the Morse taper disassembly between the collet 3 and the shaft 21.

[0035] A retaining ring 7 is provided at the bottom of the housing 1, outside the nut 6. The retaining ring 7 is used to cover the nut 6, making the product more aesthetically pleasing. A limiting hole 23 is horizontally provided on the shaft 21 above the thread 24, and a clearance hole 8 corresponding to the limiting hole 23 is provided on the side of the retaining ring 7. The purpose of the clearance hole 8 and the limiting hole 23 is to facilitate the passage of a wrench. When installing or removing the nut 6, the wrench fixes the shaft 21 and the retaining ring 7 together, preventing the shaft 21 and the nut 6 from rotating together during installation or removal.

[0036] A connecting rod 5 is also provided on the housing 1.

[0037] 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 top-mounted electric mixer with Morse connection collet, characterized in that: The device includes a housing (1), a drive shaft (2), a chuck (3), and a stirring paddle (4). The drive shaft (2) includes a shaft body (21) with a through hole (22) for the stirring paddle (4) to pass through. The shaft body (21) is rotatably mounted in the housing (1) via a bearing (10). The lower part of the shaft body (21) is provided with an outer Morse taper (25). The chuck (3) is used to fix the stirring paddle (4). The inner sleeve (32) of the chuck (3) is provided with an inner Morse taper (34) that matches the outer Morse taper (25).

2. A top-mounted electric mixer with Morse connection collet according to claim 1, characterized in that: The middle section of the shaft (21) above the chuck (3) is provided with a thread (24), and the thread (24) is externally threaded with a nut (6).

3. A top-mounted electric mixer with Morse connection collet according to claim 2, characterized in that: The driving direction of the stirring paddle (4) is opposite to the tightening direction of the nut (6) and the thread (24).

4. A top-mounted electric mixer with Morse connection collet according to claim 3, characterized in that: A retaining ring (7) is provided at the bottom of the housing (1) outside the nut (6).

5. A top-mounted electric mixer with Morse connection collet according to claim 4, characterized in that: The shaft (21) has a limiting hole (23) horizontally above the thread (24), and the side of the retaining ring (7) has a clearance hole (8) corresponding to the limiting hole (23).

6. A top-mounted electric mixer with Morse connection collet according to claim 1, characterized in that: The housing (1) is also equipped with a drive device, which includes a motor (11) and two pulleys (12). The two pulleys (12) are respectively mounted on the shaft (21) and the output shaft of the motor (11), and the two pulleys (12) are connected by belt drive.

7. A top-mounted electric mixer with Morse connection collet according to claim 1, characterized in that: A connecting rod (5) is also provided on the housing (1).

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