CN103372388A - hand held electric mixer - Google Patents

Abstract

A hand-held electric blender has a rotary output spindle for holding a blender workpiece, first and second gears on the rotary output spindle, and a motor. The first gear is rotatably coupled to an output shaft of the electric motor. The blender includes a two-speed gearbox that receives torque from the motor and transmits the torque to the output spindle. The two-speed gearbox includes a rotating layshaft axially parallel to the rotating output spindle, third and fourth gears on the layshaft, the third gear meshing with the first gear and the fourth gear meshing with the second gear. The selector mechanism selects between a first gear ratio and a second gear ratio and includes a clutch plate on the spindle and axially movable to alternately engage and rotationally lock one of the third and fourth gears in meshing engagement with the clutch plate.

Description

Handheld electric stirrer

Technical field

The present invention relates to handheld electric stirrer, and relate more specifically to the variable-ratio handheld electric stirrer.

Background technology

Handheld electric stirrer comprises housing and a pair of rotation output axle to downward-extension, described housing is with the handle of topmost, described rotation output axle removably admit for food compositions or formula components are mixed, making beating, blending or the workpiece of lashing.Axle drives via reduction gear box by the variable-speed motor that is positioned at housing.Electrical shift control can be continous way in the higher agitator of price, and perhaps electrical shift control can be the stepping rate control that generally includes three stepping rates in the lower agitator of price.Two kinds of method for control speed change voltage and control motor speed.Usually the universal motor that the price of using in this agitator is lower has narrow speed torque scope, therefore shows relatively poor voltage speed control in the whole velocity interval of motor.This has limited the versatility of agitator, described agitator should be able to reach the low-down mixing velocity for the preparation of gourmet foods goods or formula components in the ideal case, until be used for food compositions or formula components thoroughly mix, blending, the very high mixing velocity of pulling an oar or lashing and processing in other mode.

Summary of the invention

Handheld electric stirrer has housing, be positioned at the rotation output axle that is used for keeping the agitator workpiece of housing, be positioned at the first and second gears on the rotation output axle, be positioned at housing and have the motor of rotating output shaft, be positioned at the double speed gear of housing, the first gear rotatably is coupled to the output shaft of motor, described double speed gear receives and is sent to the output axle from the torque of motor output shaft and with torque, wherein said double speed gear has be used to the first gear ratio that the first output speed is provided and for the second gear ratio that the second output speed is provided, and first the gear ratio torque that is sent to rotation output axle be that at least twice of the second gear ratio torque of being sent to rotation output axle is large, described double speed gear comprises that axially parallel is in the swiveling counter shaft of rotation output axle, the third and fourth gear is positioned on the countershaft, described the 3rd gear and the engagement of the first gear and the 4th gear and the engagement of the second gear, the first gear provides the first gear ratio, and second, the third and fourth gear provides the second gear ratio, wherein the 3rd gear and the 4th gear are the gear that can rotate freely, it can freely rotate on axle, and selector mechanism on the axle in order between the first gear ratio shaft gear and the second gear ratio shaft gear, select, selector mechanism comprises at the clutch disk between the third and fourth gear on the axle, and it can move axially in order to alternately engage and rotatably lock the 3rd or the 4th gear that meshes with clutch disk along axle.

Handheld electric stirrer comprises also that preferably such the first gear ratio provides the first output speed scope and the second gear ratio that the second output speed scope is provided for the electronic speed controller of control motor rotary speed.

Clutch disk preferably has relative axial vane surface, and each axial vane surface has the claw that alternately engages the 3rd or the 4th gear that the 3rd or the 4th gear and rotatable locking engage with clutch disk.

Handheld electric stirrer preferably also comprises and switches ring and linkage, and wherein clutch disk is by switching annulate shaft to catching and switch that the ring ring is coupled to linkage in order to so that switch ring and move axially between the 3rd or the 4th gear.

Handheld electric stirrer preferably also comprises can be at horizontal L-R direction and the vertical four axistyle action bars that moves of front-rear direction, wherein the move operation linkage on horizontal L-R direction is so that so that switch ring and move axially between the 3rd or the 4th gear, and the move operation electronic speed controller on vertical front-rear direction is so that the rotary speed of control motor.

To understand further aspect of the present invention from following description.

Description of drawings

To only be described exemplary form of the present invention by the mode of example and with reference to accompanying drawing now, wherein:

Fig. 1 is the schematic general schematic view that is suitable for the drive system of variable-ratio handheld electric stirrer according to the present invention;

Fig. 2 is suitable for typical rate/torque curve of the present invention with conventional motors compares;

Fig. 3 is the perspective view that illustrates according to the variable-ratio handheld electric stirrer of manual switchover of the present invention;

Fig. 4 illustrates according to the gear-box motor of the first gear ratio and the view of manual switchover system of being in of the present invention;

Fig. 5 illustrates the gear-box motor that is in the second gear ratio and the view of manual switchover system;

Fig. 6 is the view that illustrates according to the second embodiment of the gear-box motor that is in the first gear ratio of the present invention and manual switchover system;

Fig. 7 is the view that illustrates according to the second embodiment of the gear-box motor that is in the second gear ratio of the present invention and manual switchover system.

The specific embodiment

Electronics and mechanical speed control device have been used simultaneously according to handheld electric stirrer of the present invention, in order to speed and torque range greater than hitherto known handheld electric stirrer in this area are provided.See figures.1.and.2, agitator is driven by the motor 19 with rotating output shaft 18.The rotary speed of motor 19 is carried out Electronic Control by electronic speed controller 25.Have double speed gear 24 receptions of low gear ratio and high gear ratio from the torque of motor output shaft 18, and this torque is sent to a pair of rotation output axle 23.The combination of electronic speed controller 25 and double speed gear 24 provide have be suitable for mixing at food compositions or formula components, chief cooker or the cooking skill of blending, making beating or the torque in a big way of otherwise processing and speed.As those skilled in the art will understand, for any given power stage torque, acquisition value and speed be inversely proportional to (be t=1/n, wherein t is torque, and n is rotary speed/rotating speed).Therefore the first lower gear ratio provides the agitator with high torque (HT) and low speed output, and the second higher gear ratio provides the agitator that has low torque and export at a high speed.In a preferred embodiment, the first lower gear ratio provides the output speed scope that per minute 200-450 turns (rpm) in order to prepare thick or exquisite food compositions or formula components, and second higher gear ratio the output speed scope of 600-1350rpm is provided, in order to food compositions or formula components are thoroughly mixed, blending, pull an oar, lash or otherwise process.Via variable-speed motor controller 25 agitator speed is controlled in each scope.In a preferred embodiment, for any given velocity of electrons setting value, at least twice of higher gear than the output torque that provides is provided in the output torque that low gear ratio provides.The speed/torque scope that provides of the lower gear ratio of speed/torque scope that provides of higher gear ratio is more wide in range on the other hand.

With reference to Fig. 3 to Fig. 5, show the first embodiment according to gear-box motor of the present invention and manual switchover system.Hand-held mixer comprises housing 1, and it has be used to the handle 2 of catching agitator.A pair of adjacent output axle 23 can be come in and gone out by the downside 3 of housing, so as removably to be kept for to the food compositions or the formula components that are applied to it mix, blending, the agitating device of pulling an oar, lashing or otherwise processing or other workpiece 5.Drive motor 19 is positioned at housing, and wherein Control of Voltage electronic installation 25 is coupled to S/CO 21, in order to change the speed of motor 19.Motor 19 has output shaft 18, and cooling fan 10 is positioned on this output shaft 18.Double speed gear 24 receives and is sent to axle 23 from the torque of output shaft 18 and with this torque.Gear-box 24 has be used to the first gear ratio that the first output speed is provided with for the second gear ratio that the second output speed is provided.The torque that the first gear ratio is sent to rotation output axle is that at least twice of the second gear ratio torque of being sent to rotation output axle is large.With electronic speed controller 25 combinations that are used for control motor 19 rotary speeies, the first gear ratio provides the first output speed scope and the 2nd G gear ratio that the second output speed scope is provided.

Following discussion relates to double speed gear 24.Simple just to describing, in suitable situation, to discussing from half gear-box of one of output shaft 18 drive spindles 13.Double speed gear 24 has axially parallel in a pair of swiveling counter shaft 23 of rotation output axle 13.The first and second gears 11,12 are positioned on the respective end of swiveling counter shaft 23 securely.The third and fourth gear 14,15 is positioned on the output axle 13.The gear of the third and fourth gear 14,15 for rotating freely, and may be selected in output axle 13 and rotate freely, or rotatably locked by output axle 13.The 3rd gear 14 receives the torque from motor output shaft 18, and engages with the first gear 11 engagements of countershaft 23.This motor output shaft 18 and the 3rd gear 14 provide the first gear ratio, and it is used for providing the first output speed of countershaft 23.The 4th gear 15 engages with the second gear 12 engagements of countershaft 23, and countershaft 23 provides the second gear ratio with the first gear 11, and it is used for providing the second output speed.

Selector mechanism 16 is positioned on the countershaft 13, in order to optionally the 3rd or the 4th gear 14,15 is locked onto axle 13, thereby with the first gear ratio or the second gear ratio torque is sent to axle 23 from output shaft 18 and the 3rd gear 14.The selector mechanism 16 that comprises clutch disk 17 is positioned at and is positioned on the axle 13 between the third and fourth gear 14,15.Clutch disk 17 moves axially in order to alternately engage respectively and rotatably lock the 3rd or the 4th gear 14,15 that engages with clutch disk 17 along axle 13.Clutch disk 17 has relative axial vane surface, each axial vane surface have for the 3rd or the 4th gear 14,15 in corresponding claw or the claw 28 that engages of recess, thereby the 3rd or the 4th gear 14,15 that engages with clutch disk 17 of locking rotatably.Selector mechanism 16 also comprises the switching ring 29 that is positioned at around the clutch 17.Axially catch so that so that clutch disk 17 is mobile in axle 13 by ring 29 by switching for clutch disk 17.Switch ring 29 and be connected to linkage 20, in order to so that switch ring 29 and between the 3rd or the 4th gear 14,15, move axially.

When clutch disk 17 engaged with the 3rd gear 14 via claw 28, axle 13 directly drove from motor output shaft 18 via the 3rd gear 14.In a preferred embodiment, this is high (fast) gear ratio.Alternatively, when clutch disk 17 engages with the 4th gear 15 via claw 28, the output axle drives from motor output shaft 18 via the 3rd gear 14, countershaft gear 11, the 12 and the 4th gear 15, and the 3rd gear 14, countershaft gear 11, the 12 and the 4th gear 15 are driven by motor output shaft.In this structure, gear 14 is driven by motor output shaft 18 and the 4th gear 15 locks onto on the axle 13 by clutch plate 17.

Four axistyle action bars 21 is arranged in the top forward direction part of agitator handle.Four axistyle action bars 21 has eccentric cam 22, and it engages with linkage 20, such moving horizontally so that cam 22 and linkage 20 move on horizontal L-R axis, thus so that switch ring 29 and between the 3rd or the 4th gear 14,15, move axially.Axial stem 26 is coupled bar 21 and Control of Voltage electronic installation 25, and the operating voltage that moves horizontally on vertical anterior-posterior axis is controlled electronic installation 25 in order to change the speed of motor 19 like this.Therefore, four axistyle action bars 21 provides the selection between gear ratio and the electromotor velocity.

With reference to Fig. 6 and Fig. 7, the second embodiment according to gear-box motor of the present invention and manual switchover system is shown.In a second embodiment, a pair of travelling gear 27 is welded on the clutch disk 17.A pair of travelling gear 27 is joined together engagingly, and concentric with output axle 13 respectively.When clutch disk 17 is bonded on the 3rd gear 14, as shown in Figure 6, the 3rd gear 14 will directly output to countershaft 13.This is direct driving (at a high speed) embodiment.Travelling gear 27 will cause together high speed rotating of two axles 13.

In agitator of the present invention, chief cooker or cooker have at food compositions or formula components mix, blending, stirring or otherwise process more on a large scale or speed.By selecting the first lower gear ratio and control variable-speed motor, cooker has the larger control for the preparation of the low agitator speed of purified diet goods or formula components, and by selecting the second higher gear ratio and control variable-speed motor, culinary art has a wider high mixing velocity, is used for food compositions or formula components are thoroughly mixed, blending, pull an oar, lash or otherwise process.

It should be understood that and apparently to those skilled in the art should not be regarded as exceeding scope of the present invention to modification of the present invention and change.

In an alternative, but there is Concentric rotation and along the isolated a pair of gear of corresponding axle.The countershaft that also has pair of parallel, corresponding one of such countershaft and a center roller is associated.Be positioned on each countershaft with the second pair of toothed belt gear that is positioned at the gear complementation on its respective mandrels.Every pair of second gear is concentric rotatably, and spaced apart along corresponding countershaft.Variable-speed motor and motor controller are positioned at housing so that so that countershaft rotation, countershaft all rotatably with electric motor so that so that countershaft along with motor rotates.

Selector knob is positioned on the housing of agitator and with cam mechanism and is associated so that so that a pair of the second gear optionally vertically move between primary importance and the second place along corresponding countershaft.Selector knob in the rotation on the first direction so that the second paired gear switch on the countershaft, until the engagement of the first gear of the first gear of second pair of gear and paired axle gear.The first gear of engagement has the diameter that is suitable for the first low gear ratio and the number of teeth and the second gear and has the diameter that is suitable for the second higher gear ratio and the number of teeth and cause exporting axle and have second range of speeds by variable-speed motor control.

Claims (5)

1. A hand-held electric mixer, comprising: case; a rotating output spindle located within the housing to hold the agitator workpiece; first and second gears on the rotating output spindle; an electric motor located within the housing and having a rotating output shaft, wherein the first gear is rotatably coupled to the motor output shaft; a two-speed gearbox within the housing that receives torque from the motor output shaft and transmits torque to the output spindle, wherein: The two-speed gearbox has a first gear ratio for providing a first output speed and a second gear ratio for providing a second output speed, and the torque transmitted by the first gear ratio to the rotating output spindle is the second the gear ratio is at least twice greater than the torque transmitted to the rotating output spindle; The two-speed gearbox includes: a rotary countershaft axially parallel to the rotary output spindle; third and fourth gears on the layshaft, the third gear meshing with the first gear and the fourth gear meshing with the second gear, the first gear providing the first gear ratio, and the second, third and fourth the gear provides a second gear ratio; the third gear and the fourth gear are freely rotatable gears which are freely rotatable on the output spindle; and a selector mechanism on the spindle for selecting between a first gear ratio and a second gear ratio, the selector mechanism including a clutch disc between the third and fourth gears on the spindle and movable along The output spindle moves axially to alternately engage and rotatably lock one of the third and fourth gears meshing with the clutch disc. 2. The hand-held electric blender of claim 1, further comprising an electronic speed controller for controlling the rotational speed of the motor. 3. The hand-held electric mixer of claim 1 , wherein the clutch plate has opposing axial faces, each axial face having a structure for alternately engaging the third and fourth gears and rotatably locking with the clutch. The disc engages the jaws of one of the third and fourth gears. 4. The hand-held electric mixer of claim 1 , further comprising a shift ring and a linkage, wherein the clutch disc is held axially captured by the shift ring; and A shift ring is coupled to the linkage to move the shift ring axially between the third and fourth gears. 5. The hand-held electric mixer of claim 2, further comprising a four-axis joystick movable in a lateral left-right direction and a longitudinal front-rear direction, wherein: movement of the lever in the transverse left-right direction operates the linkage to move the shift ring axially between the third and fourth gears; and Movement of the joystick in the longitudinal front-rear direction operates the electronic speed controller to control the rotational speed of the electric motor.

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