Telescopic structure of handheld stirrer

Abstract

The telescopic structure comprises a main machine, a stirring cover assembly and a cutter shaft, the stirring cover assembly is arranged in a manner of moving up and down relative to the main machine and the cutter shaft, and the cutter shaft is arranged in the stirring cover assembly and is in transmission connection with a motor shaft of a motor. The main machine and the stirring cover assembly are connected with an elastic element which exerts downward acting force on the stirring cover assembly, a moving piece is arranged in the stirring cover assembly in an up-down moving mode, and the cutter shaft is rotationally connected with the moving piece. According to the utility model, the stirring cover assembly is connected with the main machine and can move up and down, so that the number of parts can be effectively reduced, and the size of the whole stirring cover assembly can be reduced. Meanwhile, a moving piece is arranged in the stirring cover assembly to ensure the rotation stability of the cutter shaft.

Description

Technical Field

[0001] The utility model relates to a telescopic structure of a handheld stirrer. Background Art

[0002] Prior art, such as Chinese invention patent document with publication number CN 111246785B, discloses an appliance for stirring or crushing food, which has a rotatable shaft driven by a motor, a working part is arranged at the end of the shaft opposite to the motor, and has an inner component and an outer component, which at least partially define the housing of the appliance, wherein the inner component is arranged to be movable within the outer component, and wherein the inner component rotatably carries the shaft so that the working part is located outside the appliance so as to be able to stir or crush food, wherein the working part is arranged in a shield on the outer component, wherein the inner component together with the shaft carried by it is axially movable relative to the outer component in the direction of the axis, and wherein the inner component is carried relative to the outer component so that axial movement of the inner component relative to the outer component causes rotational movement of the outer component relative to the inner component.

[0003] Based on the above, in the prior art, the extension and retraction of the knife shaft is achieved by setting the inner component and the outer component together. In this technology, the outer component is used to support the container, while the inner component is responsible for connecting with the host. When in use, a force is applied to the host to drive the inner component, the knife shaft and the knife head to move downward relative to the outer component to achieve the position adjustment of the knife head. However, this combination of inner and outer components has a large number of complex parts and components, and the combination of inner and outer components makes it impossible to reduce the size of the product, which is not conducive to production and needs further improvement. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a telescopic structure of a hand-held blender.

[0005] A telescopic structure of a hand-held blender designed for this purpose includes a main unit, a stirring cover assembly, and a knife shaft. The stirring cover assembly is arranged to move up and down relative to the main unit and the knife shaft. The knife shaft is arranged inside the stirring cover assembly and is drivingly connected to the motor shaft of a motor. The main unit and the stirring cover assembly are connected with an elastic element that applies a downward force to the stirring cover assembly. A moving part is arranged inside the stirring cover assembly to move up and down, and the knife shaft is rotationally connected to the moving part.

[0006] Preferably, the stirring cover assembly comprises a connecting head, a connecting sleeve and a cover body which are connected in sequence, the knife shaft extends from top to bottom into the cover body, and one end of the knife shaft located in the cover body is connected to a knife head;

[0007] The connector is connected to the host by moving up and down;

[0008] A vertical movement cavity is provided inside the connector head, and the moving member is vertically movably arranged inside the vertical movement cavity.

[0009] Preferably, longitudinal guide grooves are provided on the inner side wall of the vertical movement cavity, and guide ribs are provided on the moving member and are movably inserted into the longitudinal guide grooves.

[0010] Preferably, a limiting member is fixedly connected to the main body, and the limiting member is in contact with the upper end surface of the moving member.

[0011] Preferably, the moving member is provided with a mounting hole, a bearing is arranged in the mounting hole, and the cutter shaft is fixedly connected to the inner ring of the bearing.

[0012] Preferably, the main body at least includes a motor housing and a motor arranged inside the motor housing. An accommodation cavity with an open lower end is formed inside the motor housing. The connector head is vertically movably arranged in the accommodation cavity. The elastic element is arranged in the accommodation cavity above the connector head, and the elastic element applies a downward force to the connector head.

[0013] Preferably, a moving plate is arranged in the accommodation cavity above the connector head. The moving plate is vertically movably arranged relative to the main body. 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 accommodation cavity.

[0014] Preferably, a plurality of snap grooves are arranged on the outer wall of the connector head in a circumferential array. Each snap groove is composed of an open groove, a communication groove and a longitudinal limiting groove that are sequentially communicated. A limiting boss is arranged on the inner wall of the accommodation cavity and can be screwed into the longitudinal limiting groove through the open groove and the communication groove. The limiting boss can be vertically movably arranged relative to the longitudinal limiting groove.

[0015] Preferably, a positioning block is arranged on the lower end surface of the moving plate, and a clamping groove that is clamped and matched with the positioning block is arranged on the upper end surface of the connector head;

[0016] When the limiting boss is located inside the longitudinal limiting groove, the positioning block is clamped in the clamping groove.

[0017] Preferably, a limiting groove is arranged on the inner peripheral wall of the accommodation cavity, and an elastic protrusion is arranged on the outer peripheral wall of the connector head;

[0018] The elastic protrusion is snapped into the limiting groove and can be vertically movably arranged relative to the limiting groove.

[0019] Compared with the prior art, the stirring cover assembly is arranged to move up and down relative to the main body and the cutter shaft. The cutter shaft is arranged inside the stirring cover assembly and is in transmission connection with the motor shaft of the motor. An elastic element that applies a downward acting force to the stirring cover assembly is connected between the main body and the stirring cover assembly. A moving part is arranged to move up and down inside the stirring cover assembly, and the cutter shaft is rotatably connected to the moving part. By means of the stirring cover assembly, the present utility model has the dual functions of being connected to the main body and being movable up and down, which can effectively reduce the number of parts and can reduce the size of the entire stirring cover assembly. At the same time, a moving part is arranged inside the stirring cover assembly of the present utility model to ensure the rotational stability of the cutter shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic three-dimensional structure diagram of a hand-held stirrer;

[0021] Figure 2 is a schematic cross-sectional structure diagram of a hand-held stirrer;

[0022] Figure 3 is a schematic three-dimensional structure diagram of the main body;

[0023] Figure 4 is a schematic three-dimensional structure diagram of the stirring cover assembly. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The present utility model will be further described below with reference to the drawings and embodiments.

[0025] Referring to Figures 1-4 , a telescopic structure of a hand-held stirrer includes a main body 10, a stirring cover assembly 20, and a cutter shaft 60. The stirring cover assembly 20 is arranged to move up and down relative to the main body 10 and the cutter shaft 60. The cutter shaft 60 is arranged inside the stirring cover assembly 20 and is in transmission connection with the motor shaft of the motor 110. An elastic element 130 that applies a downward acting force to the stirring cover assembly 20 is connected between the main body 10 and the stirring cover assembly 20. A moving part 30 is arranged to move up and down inside the stirring cover assembly 20, and the cutter shaft 60 is rotatably connected to the moving part 30.

[0026] By means of the stirring cover assembly, the present utility model has the dual functions of being connected to the main body and being movable up and down, which can effectively reduce the number of parts and can reduce the size of the entire stirring cover assembly. At the same time, a moving part is arranged inside the stirring cover assembly of the present utility model to ensure the rotational stability of the cutter shaft.

[0027] In use, the bottom of the stirring cover assembly 20 is in contact with the inner ground of the container. At this time, applying a downward force to the main machine 10 can drive the cutter shaft 60 to move downward relative to the stirring cover assembly 20 together, so as to adjust the position of the cutter head 70 at the bottom end of the cutter shaft 60. During this process, the elastic element 130 is compressed and stores energy. When the force applied to the main machine 10 is released, the elastic element 130 drives the main machine 10 and the cutter shaft 60 to move upward together to achieve reset.

[0028] See Figure 2 and Figure 4 , the stirring cover assembly 20 includes a connection head 210, a connection sleeve 220 and a cover body 230 connected in sequence. The cutter shaft 60 extends downward into the cover body 230, and a cutter head 70 is connected to one end of the cutter shaft 60 located in the cover body 230; the connection head 210 is vertically movably connected to the main machine 10; a vertically movable cavity 240 is provided in the connection head 210, and the moving member 30 is vertically movably arranged in the vertically movable cavity 240.

[0029] Further, a return spring 50 is provided in the vertically movable cavity 240. The return spring 50 is sleeved on the cutter shaft 60. The upper end of the return spring 50 is connected to the moving member 30, and the lower end of the return spring 50 is connected to the inner bottom surface of the vertically movable cavity 240.

[0030] See Figure 2 , the inside of the connection sleeve 220 is hollow, its lower end communicates with the cover body 230, and its upper end communicates with the vertically movable cavity 240.

[0031] See Figure 2 , a longitudinal guide groove 241 is provided on the inner side wall of the vertically movable cavity 240, and a guide rib 310 that is movably inserted into the longitudinal guide groove 241 is provided on the moving member 30. The function of this structure is that the moving member 30 can only move up and down relative to the connection head 210 and cannot rotate relative to the connection head 210.

[0032] See Figure 2 , the main machine 10 is fixedly connected with a limiting member 160, and the limiting member 160 is attached to the upper end surface of the moving member 30. The function of the limiting member 160 is to restrain the moving member 30 from driving the cutter shaft 60 to move upward, so as to avoid damage to the motor 110 caused by the upward movement of the cutter shaft 60.

[0033] See Figure 2 , the moving member 30 is provided with a mounting hole, and a bearing 40 is provided in the mounting hole. The cutter shaft 60 is fixedly connected with the inner ring of the bearing 40.

[0034] See Figure 2, the main body 10 at least includes a motor housing 100 and a motor 110 disposed within the motor housing 100. An accommodation cavity 102 with an open lower end is formed inside the motor housing 100. The connector 210 is vertically movably disposed within the accommodation cavity 102. The elastic element 130 is disposed within the accommodation cavity 102 above the connector 210, and the elastic element 130 exerts a downward acting force on the connector 210.

[0035] The motor 110 is fixedly installed within the motor housing 100 by screws. During use, the motor housing 100 is configured as a handle for holding the motor housing 100 for use.

[0036] See Figure 2 , a moving plate 120 is disposed within the accommodation cavity 102 above the connector 210. The moving plate 120 is vertically movably disposed 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 accommodation cavity 102. The moving plate 120 is provided to enable the elastic element 120 to better act on the connector 210 with the acting force.

[0037] See Figure 2 and Figure 3 , a plurality of guide posts 140 are disposed within the accommodation 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 and limit the lower end surface of the moving plate 120. In this structure, the limit screws 150 function to restrict the downward movement of the moving plate 120 to prevent the guide posts 140 from disengaging from the through holes and causing the moving plate 120 to fall off.

[0038] See Figure 3 and Figure 4 , a plurality of snap grooves 211 are circumferentially arrayed along the outer wall of the connector 210. The snap grooves 211 are composed of an open groove 212, a communication groove 213, and a longitudinal limiting groove 214 that are sequentially connected. A limiting boss 101 that can be screwed into the longitudinal limiting groove 214 through the open groove 212 and the communication groove 213 is disposed on the inner wall of the accommodation cavity 102. The limiting boss 101 is vertically movably disposed relative to the longitudinal limiting groove 214.

[0039] During assembly, the limiting boss 101 sequentially passes through the open groove 212 and the communication groove 213 and finally is screwed into the longitudinal limiting groove 214. The limiting boss 101 is located within the longitudinal limiting groove 214 and can move vertically relative to the longitudinal limiting groove 214, thereby enabling the entire stirring cover assembly 20 to move vertically relative to the machine head 10.

[0040] SeeFigure 3 and Figure 4 , a positioning block 121 is provided on the lower end surface of the moving plate 120, and a card slot 215 that is in snap-fit 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 snap-fitted in the card slot 215. This structure can effectively restrict the rotation of the stirring cover assembly 20 and the machine head 10, avoiding random unlocking of the two. 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 slot 212.

[0041] See Figure 3 and Figure 4 , a limiting groove 103 is provided on the inner peripheral wall of the accommodating cavity 102, 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 103 and is arranged to be movable up and down relative to the limiting groove 103. 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 thus avoid the separation of the two. When it is necessary to separate and disassemble the two, either one is driven to rotate so that the elastic protrusion 216 disengages from the limiting groove 102.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention 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 cannot be understood as a limitation to the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A telescopic structure of a hand-held blender, comprising a main unit (10), a blending cover assembly (20), and a blade shaft (60), characterized in that: The stirring cover assembly (20) is arranged to move up and down relative to the main machine (10) and the knife shaft (60); the knife shaft (60) is arranged inside the stirring cover assembly (20) and is drivingly connected to the motor shaft of the motor (110); the main machine (10) and the stirring cover assembly (20) are connected to an elastic element (130) for applying a downward force to the stirring cover assembly (20); a moving part (30) is arranged inside the stirring cover assembly (20) to move up and down; and the knife shaft (60) is rotationally connected to the moving part (30).

2. The telescopic structure of a hand-held blender according to claim 1, characterized in that: The stirring cover assembly (20) comprises a connecting head (210), a connecting sleeve (220) and a cover body (230) which are connected in sequence, the knife shaft (60) extends from top to bottom into the cover body (230), and one end of the knife shaft (60) located in the cover body (230) is connected to a knife head (70); The connector (210) is connected to the host (10) in an up-and-down movable manner; The connecting head (210) is provided with upper and lower movable cavities (240), and the moving member (30) is arranged in the upper and lower movable cavities (240) to move up and down.

3. The telescopic structure of a hand-held blender according to claim 2, characterized in that: A longitudinal guide groove (241) is provided on the inner side wall of the upper and lower movable cavities (240), and a guide convex rib (310) movably inserted into the longitudinal guide groove (241) is provided on the movable member (30).

4. A telescopic structure of a hand-held blender according to any one of claims 1 to 3, characterized in that: The main unit (10) is fixedly connected to a limiting member (160), and the limiting member (160) is in contact with the upper end surface of the moving member (30).

5. A telescopic structure of a hand-held blender according to any one of claims 1 to 3, characterized in that: The moving member (30) is provided with a mounting hole, a bearing (40) is provided in the mounting hole, and the knife shaft (60) is fixedly connected to the inner ring of the bearing (40).

6. The telescopic structure of a hand-held blender according to claim 2 or 3, characterized in that: The host (10) comprises at least a motor housing (100) and a motor (110) arranged in the motor housing (100); a receiving chamber (102) with an opening at the lower end is formed inside the motor housing (100); the connector (210) is arranged in the receiving chamber (102) to move up and down; the elastic element (130) is arranged in the receiving chamber (102) above the connector (210); and the elastic element (130) applies a downward force to the connector (210).

7. The telescopic structure of a hand-held blender according to claim 6, characterized in that: A movable plate (120) is arranged in the accommodating cavity (102) above the connecting head (210), and the movable plate (120) is arranged to move up and down relative to the main unit (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 (102).

8. The telescopic structure of a hand-held blender according to claim 7, 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 (102); the limiting boss (101) can be moved up and down relative to the longitudinal limiting groove (214).

9. The telescopic structure of a hand-held blender according to claim 8, 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).

10. The telescopic structure of a hand-held blender according to claim 8 or 9, characterized in that: A limiting groove (103) is provided on the inner peripheral wall of the accommodating cavity (102), 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 (103) and can be moved up and down relative to the limiting groove (103).

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