Handheld stirrer

Abstract

The utility model discloses a handheld stirrer which comprises a main machine and a stirring cover assembly, the stirring cover assembly moves up and down relative to the main machine, and the main machine is provided with a variable signal conversion element which changes an output electric signal along with the up-down position change of the stirring cover assembly; the variable signal conversion element is electrically connected with a circuit board, and the circuit board controls the rotating speed of the motor according to an electric signal output by the variable signal conversion element. The electric signal output by the variable signal conversion element can be changed along with the vertical position change of the stirring cover assembly, and the rotating speed of the motor is controlled through the change of the electric signal. Therefore, in the using process, a user only needs to press down or lift up the main machine to change the vertical position of the stirring cover assembly so that the rotating speed of the motor can be changed, and the vertical position of the stirring cover assembly can be changed while the rotating speed of the motor is adjusted. The operation that a user needs to press the key is effectively reduced, and the use experience of the user is improved.

Description

Technical Field

[0001] The utility model relates to a hand-held stirrer. Background Art

[0002] The prior art, such as a Chinese invention patent document with a publication number of CN 114040697A, discloses a tubular motor body configured to be held by hand. The motor body houses a motor and is provided with a first safety actuator configured to allow power supply to the motor when the user activates it and prohibit power supply to the motor when the user does not activate it; and a second control actuator configured to control the variable-speed drive of the motor and be operable only when the first safety actuator has been previously invoked to start the motor. According to the invention, the first safety actuator and the second control actuator are arranged on both sides of the circumferential region of the motor body.

[0003] Based on the above, in the prior art, to adjust the speed of the motor, the first safety actuator and the second control actuator are used in cooperation. When in use, the user needs to press the first safety actuator and the second control actuator simultaneously to achieve control, and the depth of pressing the second control actuator is required to control the speed of the motor. This operation method is rather complex and not convenient for the user to operate. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a hand-held stirrer.

[0005] A hand-held stirrer designed according to this purpose includes a main body and a stirring cover assembly. The stirring cover assembly is arranged to move up and down relative to the main body. A variable signal conversion element that changes the output electrical signal as the up-and-down position of the stirring cover assembly changes is installed on the main body;

[0006] The variable signal conversion element is electrically connected to a circuit board, and the circuit board controls the speed of the motor according to the electrical signal output by the variable signal conversion element.

[0007] Preferably, the variable signal conversion element is a sliding rheostat, and a trigger seat connected to the sensing end of the sliding rheostat is arranged on the stirring cover assembly.

[0008] Preferably, the variable signal conversion element is a Hall sensor, and a magnet that interacts with the Hall sensor is arranged on the stirring cover assembly.

[0009] Preferably, the variable signal conversion element is a pressure sensor, and a trigger element that abuts against the sensing end of the pressure sensor is arranged on the stirring cover assembly.

[0010] Preferably, the stirring cover assembly includes a connecting head, a connecting cylinder body extending downward is arranged on the connecting head, a cover body is fixedly connected to the lower end of the connecting cylinder body, a receiving cavity with an opening at the lower end is arranged at the lower part of the main machine, the connecting head is arranged to move up and down in the receiving cavity, and an elastic element for applying a downward acting force to the connecting head is arranged in the receiving cavity above the connecting head.

[0011] Preferably, a moving plate is arranged in the receiving cavity above the connecting head, the moving plate is arranged to move up and down relative to the main machine, one end of the elastic element is connected to the upper end surface of the moving plate, and the other end is connected to the inner top surface of the receiving cavity.

[0012] Preferably, a plurality of snap grooves are arranged in a circumferential array on the outer wall of the connecting head, the snap grooves are composed of an opening groove, a communication groove and a longitudinal limiting groove which are connected in sequence, a limiting boss which can be screwed into the longitudinal limiting groove through the opening groove and the communication groove is arranged on the inner wall of the receiving cavity, and the limiting boss is arranged to move up and down relative to the longitudinal limiting groove.

[0013] Preferably, a positioning block is arranged on the lower end surface of the moving plate, and a clamping groove which is in clamping fit with the positioning block is arranged on the upper end surface of the connecting head;

[0014] When the limiting boss is located inside the longitudinal limiting groove, the positioning block is clamped in the clamping groove.

[0015] Preferably, a limiting groove is arranged on the inner peripheral wall of the receiving cavity, and an elastic protrusion is arranged on the outer peripheral wall of the connecting head;

[0016] The elastic protrusion is clamped into the limiting groove and can move up and down relative to the limiting groove.

[0017] Compared with the prior art, the utility model includes a main machine and a stirring cover assembly, the stirring cover assembly is arranged to move up and down relative to the main machine, and a variable signal conversion element which changes the output electrical signal along with the up and down position change of the stirring cover assembly is installed on the main machine; the variable signal conversion element is electrically connected with a circuit board, and the circuit board controls the rotation speed of the motor according to the electrical signal output by the variable signal conversion element. Along with the up and down position change of the stirring cover assembly, the utility model can change the electrical signal output by the variable signal conversion element, and control the rotation speed of the motor by changing the electrical signal. Thus, in the using process, the user only needs to press down or lift the main machine to change the up and down of the stirring cover assembly to change the rotation speed of the motor, and while realizing the adjustment of the rotation speed of the motor, the up and down position of the stirring cover assembly is also changed. The operation of pressing buttons by the user is effectively reduced, and the using experience of the user is improved. Description of the Drawings

[0018] Figure 1 Schematic cross-sectional structure diagram of a hand-held blender;

[0019] Figure 2 Schematic partial cross-sectional structure diagram of a hand-held blender;

[0020] Figure 3 Schematic structure diagram of the main body;

[0021] Figure 4 Schematic three-dimensional structure diagram of the mixing cover assembly;

[0022] Figure 5 Schematic structure diagram of the trigger element and the pressure sensor. Detailed implementation manners

[0023] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Refer to Figures 1-4 , a hand-held blender, comprising a main body 10 and a mixing cover assembly 20, wherein the mixing cover assembly 20 is arranged to move up and down relative to the main body 10, and a variable signal conversion element 30 which changes the output electrical signal as the up and down position of the mixing cover assembly 20 changes is installed on the main body 10;

[0025] The variable signal conversion element 30 is electrically connected to a circuit board 50, and the circuit board 50 controls the rotation speed of the motor 60 according to the electrical signal output by the variable signal conversion element 30.

[0026] Based on the above embodiments, as the up and down position of the mixing cover assembly changes in the present utility model, the electrical signal output by the variable signal conversion element can be changed, and the rotation speed of the motor is controlled by the change of the electrical signal. Thus, in the use process, the user only needs to press down or lift the main body to change the up and down of the mixing cover assembly to change the rotation speed of the motor, and while realizing the adjustment of the rotation speed of the motor, the up and down position of the mixing cover assembly is also changed. The operation of the user pressing the button is effectively reduced, and the user experience is improved.

[0027] In the present utility model, a cutter shaft 70 is rotatably arranged in the mixing cover assembly 20, the upper end of the cutter shaft 70 is fixedly connected to the motor shaft of the motor 60, and the lower end of the cutter shaft 70 is fixedly connected to a cutter head 80. The mixing cover assembly 20 moves up and down relative to the cutter shaft 70. During the up and down movement of the mixing cover assembly 20, the up and down positions of the cutter shaft 70 and the cutter head 80 relative to the mixing cover assembly change, so that when the bottom surface of the mixing cover assembly 20 is in contact with the inner bottom surface of the container during use, the position of the cutter head 80 is changed by changing the up and down position of the mixing cover assembly 20, thereby enabling the material to be better whipped by the cutter head 80.

[0028] Refer to Figure 2, the variable signal conversion element 30 is a sliding rheostat, and a trigger base 40 connected to the induction end 310 of the sliding rheostat is provided on the stirring cover assembly 20. The sliding rheostat adopts an existing commercially available product. When the induction end 310 of the sliding rheostat is driven by the trigger base 40 to move upward or downward, the resistance of the sliding rheostat changes. Thus, when the current input to the sliding rheostat remains unchanged, the current output from the sliding rheostat changes. The circuit board 50 controls the rotation speed of the motor 60 according to the change of this current signal.

[0029] Further, as shown in Figure 2 , a guide post 410 is further provided on the trigger base 40, a guide hole 110 is provided on the main body 10 above the trigger base 40, the guide post 410 is movably inserted into the guide hole 110, a return spring 420 is sleeved on the guide post 410, one end of the return spring 420 is connected to the trigger base 40, and the other end is connected to the main body 10. The return spring 420 exerts a downward acting force on the trigger base 40, and this acting force is used to drive the trigger base 40 to move downward for resetting.

[0030] In the present utility model, the variable signal conversion element 30 is a Hall sensor, and a magnet (not shown in the figure) that is inductive to the Hall sensor is provided on the stirring cover assembly 20. In this embodiment, as the up and down position of the stirring cover assembly 20 changes, the distance between the magnet and the Hall sensor also changes accordingly. When the magnet is closer to the Hall sensor, the induced magnetic field is stronger, and vice versa. The Hall sensor converts the changing magnetic field into a change in output voltage, and conveys this electrical signal to the circuit board. The circuit board controls the motor rotation speed according to the change of this electrical signal.

[0031] Further, the magnet is a permanent magnet.

[0032] In the present utility model, the variable signal conversion element 30 is a pressure sensor 301, and a trigger element 302 that abuts against the induction end of the pressure sensor 301 is provided on the stirring cover assembly 20.

[0033] Further, as shown in Figure 5As shown, the triggering element 302 includes a force-receiving piece 303 fixedly connected to the sensing end of the pressure sensor 301. The force-receiving piece 303 is connected to a force-receiving spring 304, and the force-receiving spring 304 is fixedly connected to the stirring cover assembly 20. In this embodiment, as the vertical position of the stirring cover assembly 20 changes, the force-receiving spring 304 is compressed or released, and the acting force transmitted by the force-receiving spring 304 to the force-receiving piece 303 and the sensing end of the pressure sensor 301 changes, resulting in a change in the pressure value measured by the pressure sensor 301. An electrical signal is output to the circuit board 50 by changing the pressure value, and the circuit board 50 controls the rotation speed of the motor 60 according to the change in the pressure value.

[0034] See Figure 1 , the stirring cover assembly 20 includes a connecting head 210. A connecting cylinder 220 extending downward is provided on the connecting head 210. A cover body 230 is fixedly connected to the lower end of the connecting cylinder 220. A receiving cavity 100 with an open lower end is provided in the lower part of the main body 10. The connecting head 210 is vertically movably arranged in the receiving cavity 100, and an elastic element 130 for applying a downward acting force to the connecting head 210 is arranged in the receiving cavity 100 above the connecting head 210.

[0035] Furthermore, the cutter head 80 is arranged in the cover body 230.

[0036] Furthermore, the connecting cylinder 220 and the cover body 230 are of an integral structure, and the connecting cylinder 220 is fixedly connected to the connecting head 210.

[0037] Furthermore, the elastic element 130 is a spring.

[0038] See Figure 2 and Figure 3 , a moving plate 120 is arranged in the receiving cavity 100 above the connecting head 210. The moving plate 120 is vertically movably arranged relative to the main body 10. One end of the elastic element 130 is connected to the upper end surface of the moving plate 120, and the other end is connected to the inner top surface of the receiving cavity 100.

[0039] See Figure 2 and Figure 3 , a plurality of guide posts 140 are arranged in the receiving cavity 100. A plurality of through holes are provided on the moving plate 120. The guide posts 140 are movably inserted into the through holes. The guide posts 140 are threadedly connected with limit screws 150, and the bolt heads of the limit screws 150 are in contact with the lower end surface of the moving plate 120 for limiting. In this structure, the limit screws 150 function to restrict the downward movement of the moving plate 120, preventing the guide posts 140 from disengaging from the through holes and causing the moving plate 120 to fall off.

[0040] See Figure 3 andFigure 4 On the outer wall of the connector 210, a number of rotary buckle grooves 211 are arranged in a circumferential array along it. The rotary buckle groove 211 is composed of an opening groove 212, a communication groove 213, and a longitudinal limiting groove 214 that are connected in sequence. On the inner wall of the accommodating cavity 100, a limiting boss 101 is provided that can be screwed into the longitudinal limiting groove 214 through the opening groove 212 and the communication groove 213. The limiting boss 101 is arranged to be movable up and down relative to the longitudinal limiting groove 214.

[0041] During assembly, the limiting boss 101 sequentially passes through the opening groove 212 and the communication groove 213, and finally is screwed into the longitudinal limiting groove 214. The limiting boss 101 is located in the longitudinal limiting groove 214, and the limiting boss 101 can move up and down relative to the longitudinal limiting groove 214, so as to realize that the entire stirring cover assembly 20 can move up and down relative to the machine head 10.

[0042] See Figure 3 and Figure 4 As shown in, a positioning block 121 is provided on the lower end surface of the moving plate 120, and a card slot 215 that is engaged with the positioning block 121 is provided on the upper end surface of the connector 210; when the limiting boss 101 is located inside the longitudinal limiting groove 214, the positioning block 121 is engaged in the card slot 215. This structure can effectively restrict the rotation of the stirring cover assembly 20 and the machine head 10, and prevent the two from being unlocked randomly. When a force greater than the force for the positioning block 121 to disengage from the card slot 215 needs to be applied, the positioning block 121 is disengaged from the card slot 215, and at the same time, the limiting boss 101 returns to the opening groove 212.

[0043] See Figure 3 and Figure 4 As shown in, a limiting groove 102 is provided on the inner peripheral wall of the accommodating cavity 100, and an elastic protrusion 216 is provided on the outer peripheral wall of the connector 210; the elastic protrusion 216 is snapped into the limiting groove 102 and is arranged to be movable up and down relative to the limiting groove 102. In this structure, when the elastic protrusion 216 is snapped into the limiting groove 102, the cooperation between the elastic protrusion 216 and the limiting groove 102 can prevent the stirring cover assembly 20 and the machine head 10 from rotating and avoid the two from separating. When it is necessary to separate and disassemble the two, drive any one of them to rotate so that the elastic protrusion 216 disengages from the limiting groove 102.

[0044] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features.

[0045] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A hand-held blender, comprising a main unit (10) and a blending cover assembly (20), wherein the blending cover assembly (20) is arranged to move up and down relative to the main unit (10), characterized in that: The host (10) is provided with a variable signal conversion element (30) which changes the output electrical signal as the up and down positions of the stirring cover assembly (20) change; The variable signal conversion element (30) is electrically connected to a circuit board (50), and the circuit board (50) controls the rotation speed of the motor (60) according to the electrical signal output by the variable signal conversion element (30).

2. A hand-held blender according to claim 1, characterized in that: The variable signal conversion element (30) is a sliding rheostat, and the stirring cover assembly (20) is provided with a trigger seat (40) connected to the sensing end (310) of the sliding rheostat.

3. A hand-held blender according to claim 1, characterized in that: The variable signal conversion element (30) is a Hall sensor, and a magnet that senses the Hall sensor is provided on the stirring cover assembly (20).

4. A hand-held blender according to claim 1, characterized in that: The variable signal conversion element (30) is a pressure sensor (301), and the stirring cover assembly (20) is provided with a trigger element (302) abutting against a sensing end of the pressure sensor (301).

5. A hand-held blender according to claim 1, characterized in that: The stirring cover assembly (20) comprises a connecting head (210), a connecting cylinder (220) extending downward is arranged on the connecting head (210), a cover body (230) is fixedly connected to the lower end of the connecting cylinder (220), a receiving chamber (100) with an opening at the lower end is arranged at the lower part of the main machine (10), the connecting head (210) is arranged in the receiving chamber (100) for moving up and down, and an elastic element (130) for applying a downward force to the connecting head (210) is arranged in the receiving chamber (100) above the connecting head (210).

6. A hand-held blender according to claim 5, characterized in that: A movable plate (120) is arranged in the accommodating cavity (100) above the connector (210), and the movable plate (120) is arranged to move up and down relative to the host (10); one end of the elastic element (130) is connected to the upper end surface of the movable plate (120), and the other end is connected to the top surface of the accommodating cavity (100).

7. A hand-held blender according to claim 6, characterized in that: A plurality of screw-on grooves (211) are arranged in an array along the circumference of the outer wall of the connector (210); the screw-on grooves (211) are composed of an opening groove (212), a connecting groove (213) and a longitudinal limiting groove (214) which are connected in sequence; a limiting boss (101) which can be screwed into the longitudinal limiting groove (214) through the opening groove (212) and the connecting groove (213) is arranged on the inner wall of the accommodating cavity (100); the limiting boss (101) can be moved up and down relative to the longitudinal limiting groove (214).

8. A hand-held blender according to claim 7, characterized in that: A positioning block (121) is provided on the lower end surface of the movable plate (120), and a slot (215) for engaging with the positioning block (121) is provided on the upper end surface of the connector (210); When the limiting boss (101) is located inside the longitudinal limiting groove (214), the positioning block (121) is engaged in the groove (215).

9. A hand-held blender according to claim 7 or 8, characterized in that: A limiting groove (102) is provided on the inner peripheral wall of the accommodating cavity (100), and an elastic protrusion (216) is provided on the outer peripheral wall of the connecting head (210); The elastic protrusion (216) is inserted into the limiting groove (102) and can be moved up and down relative to the limiting groove (102).

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