Quick connection structure of stirring rod and handheld lithium battery stirrer

Abstract

The quick connection structure comprises an adapter chuck, an elastic piece and a sliding sleeve assembly, a channel is arranged in the adapter chuck, a ball hole is formed in the side wall of the adapter chuck, a steel ball is installed in the ball hole, an annular groove is formed in the side wall of the stirring rod, the sliding sleeve assembly is arranged on the outer side of the adapter chuck in a sleeved mode, and the elastic piece is arranged on the sliding sleeve assembly. The sliding sleeve assembly can slide up and down relative to the adapter chuck so that the steel ball can enter or be separated from the annular groove, the elastic piece provides elastic force for resetting for the sliding sleeve assembly, and a limiting assembly for limiting relative rotation is arranged between the adapter chuck and the stirring rod. The limiting assembly comprises two elastic edges arranged at the lower end of the adapter chuck and a limiting protrusion arranged on the side wall of the stirring rod, the two elastic edges can elastically deform when pressed, a limiting groove allowing the limiting protrusion to enter is formed between the two elastic edges, and the limiting protrusion is clamped in the limiting groove to limit relative rotation of the stirring rod and the adapter chuck. The stirring rod is convenient to disassemble and assemble, and the impact of the stirring rod on the adapter chuck can be buffered.

Description

TECHNICAL FIELD

[0001] The utility model relates to a stirring device, especially a quick connection structure of a stirring rod and a handheld lithium battery stirrer. BACKGROUND

[0002] The handheld stirrer is widely applied in the fields of construction, chemical industry, food, etc. with the characteristics of small size, light weight and convenient carrying, and is used for stirring solid-liquid mixture or liquid mixture. Generally, it comprises a main body and a stirring rod connected to the output shaft of the main body, and the stirring rod is driven to rotate by the output shaft for stirring.

[0003] For example, the utility model patent CN219482252U discloses a stirrer, which comprises a stirrer body and a hand grip part installed on the stirrer body and used for holding the stirrer with both hands during stirring. The stirrer body comprises a driving motor and a stirring rod driven by the driving motor. The upper end of the stirring rod is threadedly connected to the output shaft of the driving motor, and the stirring head fixed to the lower end of the stirring rod is provided with stirring blades.

[0004] The stirring rod and the output shaft on the stirrer body are connected through a threaded structure. When the user needs to replace the stirring rod during use, it is necessary to use two wrenches to clamp the output shaft and the stirring rod respectively, and to exert force in opposite directions to make the stirring rod rotate down from the output shaft. When another stirring rod is replaced, the wrench is also needed to assist in tightening, which is relatively inconvenient to operate. UTILITY MODEL CONTENTS

[0005] In view of the above problem that the stirring rod and the output shaft are connected through a threaded structure and need to be assisted by a wrench during disassembly and assembly, the utility model provides a quick connection structure of a stirring rod and a handheld lithium battery stirrer.

[0006] The utility model adopts the technical scheme that the quick connection structure of the stirring rod comprises an adapter chuck, an elastic member and a sliding sleeve assembly. The adapter chuck is internally provided with a channel for inserting the stirring rod. A ball hole in communication with the channel is arranged on the side wall of the adapter chuck, and a steel ball is installed in the ball hole. An annular groove matched with the steel ball is arranged on the side wall of the stirring rod. The sliding sleeve assembly is sleeved on the outside of the adapter chuck and can slide up and down relative to the adapter chuck to make the steel ball enter or leave the annular groove. The elastic member provides an elastic force for resetting the sliding sleeve assembly. A limiting assembly for limiting relative rotation is arranged between the adapter chuck and the stirring rod. The limiting assembly comprises two elastic edges arranged at the lower end of the adapter chuck and a limiting protrusion arranged on the side wall of the stirring rod. The two elastic edges can be elastically deformed under pressure, and a limiting groove for the limiting protrusion to enter is formed between the two elastic edges. The limiting protrusion is clamped in the limiting groove to limit the relative rotation of the stirring rod and the adapter chuck.

[0007] The further preferred technical scheme of the utility model is that the limiting groove is arranged on the side wall of the lower end of the adapter sleeve, and the limiting groove has an opening on the lower edge of the adapter sleeve.

[0008] The further preferred technical scheme of the utility model is that the two long grooves are arranged on the symmetrical positions of the two sides of the limiting groove.

[0009] The further preferred technical scheme of the utility model is that an auxiliary spring is arranged in the channel, and the auxiliary spring acts on the stirring rod inserted into the channel to provide a downward elastic force for the stirring rod.

[0010] The further preferred technical scheme of the utility model is that the inner wall of the sliding sleeve assembly is provided with a high position and a low position, and the sliding sleeve assembly slides relative to the adapter sleeve to make the high position or the low position relative to the ball hole.

[0011] The further preferred technical scheme of the utility model is that the sliding sleeve assembly comprises an outer sliding sleeve and a sleeve sleeve arranged in the outer sliding sleeve, and the outer sliding sleeve and the sleeve sleeve are sleeved on the outside of the adapter sleeve.

[0012] In the initial state, the outer sliding sleeve is arranged on the second step, the sleeve sleeve is arranged in the position relative to the ball hole, the steel ball is clamped into the annular groove on the stirring rod by being squeezed inwardly, and the locking is formed,

[0013] In the unlocking state, the outer sliding sleeve drives the sleeve sleeve to move upward to the position where the accommodating groove is relative to the ball hole, and the steel ball can move outward to be separated from the annular groove on the stirring rod.

[0014] The further preferred technical scheme of the utility model is that the outer side wall of the outer sliding sleeve is provided with a fourth step for the force when the hand is lifted.

[0015] The further preferred technical scheme of the utility model is that a plurality of grooves are arranged on the inner wall of the outer sliding sleeve.

[0016] The further preferred technical scheme of the utility model is: the upper end of the adapter head is equipped with a connecting part which is detachably connected with the output shaft on the stirrer main body.

[0017] Another subject: handheld lithium battery stirrer, including quick connection structure of stirrer main body and stirring rod, the stirrer main body has output shaft for output rotary power, adapter head is connected with the output shaft.

[0018] Compared with the prior art, the utility model has the advantages that the quick connection structure is arranged to connect the stirrer main body and the stirring rod, when installing, only need to insert the stirring rod into the channel of the adapter head upwards, and the steel ball is clamped into the annular groove of the stirring rod to complete the installation, when disassembling the stirring rod, the sleeve assembly is slid relative to the adapter head, the steel ball is separated from the annular groove, the stirring rod is unlocked, and the stirring rod can be pulled out from the channel downwards, so that the disassembly and assembly are convenient, and auxiliary tools are not needed to assist disassembly and assembly.

[0019] The rotation limitation between the adapter head and the stirring rod is realized by clamping the limiting protrusion into the limiting groove between the two elastic edges, when the stirrer main body starts, the adapter head rotates, the adapter head drives the stirring rod to rotate by the contact of the elastic edge and the limiting protrusion, the elastic edge is elastically deformed by the extrusion of the limiting protrusion to the elastic edge on one side in the starting process, and the elastic edge absorbs the impact between the limiting protrusion and the adapter head by elastic deformation, so that the starting impact of the stirring rod on the adapter head is slowed down, and the damage of the stirring rod and the adapter head caused by the impact is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model will be further described in detail below in combination with the drawings and preferred embodiments, but the person skilled in the art will appreciate that these drawings are only drawn for the purpose of explaining the preferred embodiments, and therefore should not be regarded as the limitation to the scope of the utility model. In addition, unless specifically pointed out, the drawings only schematically show the composition or structure of the described object conceptually and can contain exaggerated display, and the drawings are not necessarily drawn to scale.

[0021] Figure 1 It is the schematic diagram for the connection of stirring rod and quick connection structure;

[0022] Figure 2 It is the schematic diagram for the connection of stirring rod and quick connection structure; Figure 1 ;

[0023] Figure 3 It is the schematic diagram for the connection of stirring rod and quick connection structure;

[0024] Figure 4 It is the schematic diagram for the connection of stirring rod and quick connection structure;

[0025] Figure 5 for Figure 1 A magnified view of part A;

[0026] Figure 6 This is a schematic diagram of the stirring rod.

[0027] Figure 7 This is a schematic diagram of the quick-connect structure;

[0028] Figure 8 Exploded views of the components of the quick-connect structure;

[0029] Figure 9 This is a schematic diagram of the adapter clamp structure;

[0030] Figure 10 This is a schematic diagram of the outer sliding sleeve.

[0031] Figure 11 for Figure 3 A magnified view of section B;

[0032] Figure 12 for Figure 4 A magnified view of a portion of point C.

[0033] In the diagram: 1. Sliding sleeve assembly; 2. Adapter chuck; 3. Stirring rod; 4. Stirring head; 5. Limiting protrusion; 6. Limiting groove; 7. Outer sliding sleeve; 8. Chuck sleeve; 9. Return spring; 10. Channel; 11. Auxiliary spring; 12. Pin; 13. Elastic edge; 14. Long groove; 15. Annular groove; 16. Fourth step; 17. Steel ball; 18. Ball hole; 19. Cross-section; 20. Threaded connection; 21. Groove; 22. Relief groove; 23. First step; 24. Second step; 25. Third step; 26. High position; 27. Low position. Detailed Implementation

[0034] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0035] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0036] Figures 1-12As shown, the handheld lithium battery mixer comprises a mixer body, a quick connection structure and a stirring rod 3, the mixer body has an output shaft for outputting rotary power, the quick connection structure is installed on the output shaft, the upper end of the stirring rod 3 is connected with the quick connection structure, and the lower end of the stirring rod 3 is provided with a stirring head 4 with stirring blades, the output shaft drives the stirring rod 3 to rotate through the quick connection structure, so that the stirring head 4 rotates and stirs.

[0037] The mixer body comprises a shell and a motor accommodated in the shell, the motor outputs rotary power as a power source, and the output shaft can be a motor shaft of the motor, or the motor shaft of the motor can be connected with a gear box, and the output end of the gear box has the output shaft.

[0038] Figure 2 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 As shown, the quick connection structure comprises an adapter collet 2, an elastic member and a sliding sleeve assembly 1, the adapter collet 2 is provided with a channel 10 for inserting the stirring rod 3, the lower end surface of the adapter collet 2 is provided with a channel opening for upwardly inserting the stirring rod 3 into the channel 10, the side wall of the adapter collet 2 is provided with a ball hole 18 in communication with the channel 10, the ball hole 18 is provided with a steel ball 17, the side wall of the stirring rod 3 is provided with an annular groove 15 matched with the steel ball 17, the sliding sleeve assembly 1 is sleeved on the outside of the adapter collet 2, the sliding sleeve assembly 1 can slide up and down relative to the adapter collet 2 to make the steel ball 17 enter or leave the annular groove 15, the elastic member provides the sliding sleeve assembly 1 with elastic force for resetting, the adapter collet 2 and the stirring rod 3 are provided with a limiting assembly for limiting relative rotation, the limiting assembly comprises a limiting groove 6 arranged on the adapter collet 2 and a limiting protrusion 5 arranged on the side wall of the stirring rod 3, when the stirring rod 3 is inserted into the channel 10, the steel ball 17 is clamped into the annular groove 15 on the stirring rod 3 to limit the relative movement of the stirring rod 3 and the quick connection collet, at the same time, the limiting protrusion 5 on the stirring rod 3 enters the limiting groove 6, the relative rotation of the stirring rod 3 and the adapter collet 2 is limited by the limiting protrusion 5 being limited on both sides by the groove wall of the limiting groove 6, so that when the mixer body drives the adapter collet 2 to rotate, the adapter collet 2 can drive the stirring rod 3 to rotate.

[0039] Preferably, the inner wall of the sliding sleeve assembly 1 is provided with a high position 26 and a low position 27, the sliding sleeve assembly 1 slides relative to the adapter collet 2 to make the high position 26 or the low position 27 opposite to the ball hole 18, when the sliding sleeve assembly 1 moves to the position where the high position 26 is opposite to the ball hole 18, the high position 26 pressurizes the steel ball 17 in the ball hole 18 to make the steel ball 17 clamped into the annular groove 15 on the stirring rod 3, when the sliding sleeve assembly 1 moves to the position where the low position 27 is opposite to the ball hole 18, the steel ball 17 can move outward to leave the annular groove 15 on the stirring rod 3.

[0040] Specifically, the sliding sleeve assembly 1 comprises an outer sliding sleeve 7 and a collet sleeve 8 arranged in the outer sliding sleeve 7, both of which are sleeved on the outside of the adapter collet 2, the inner wall of the outer sliding sleeve 7 is provided with a first step 23 for the lower part of the collet sleeve 8 to abut against, the collet sleeve 8 and the inner wall of the front part of the outer sliding sleeve 7 form a clearance groove 22, the collet sleeve 8 and the clearance groove 22 have a height difference to form a high position 26 and a low position 27, the side wall of the adapter collet 2 is provided with a second step 24 located below the ball hole 18 and a third step 25 located above the ball hole 18, the second step 24 serves as an abutting position for the lower part of the outer sliding sleeve 7, the elastic member comprises a return spring 9 sleeved on the outside of the adapter collet 2, the lower end of the return spring 9 abuts against the upper part of the collet sleeve 8, and the upper end of the return spring 9 abuts against the third step 25; in the initial state, the outer sliding sleeve 7 abuts against the second step 24, the collet sleeve 8 is located opposite to the ball hole 18, the steel ball 17 is pressed inward by the collet sleeve 8 and is clamped into the annular groove 15 on the stirring rod 3 to form locking, and in the unlocked state, the outer sliding sleeve 7 drives the collet sleeve 8 to move upward to the position where the clearance groove 22 is opposite to the ball hole 18, and the steel ball 17 can move outward to be separated from the annular groove 15 on the stirring rod 3.

[0041] Figure 3 、 Figure 4 、 Figure 11 、 Figure 12 As shown in the operation principle of disassembling and assembling the stirring rod 3, when it is needed to connect the stirring rod 3 with the quick connection structure, the user first lifts the outer sliding sleeve 7 relative to the adapter collet 2, moves the outer sliding sleeve 7 and the collet sleeve 8 upward to the position where the clearance groove 22 is opposite to the ball hole 18, inserts the upper end of the stirring rod 3 into the channel 10, and makes the annular groove 15 opposite to the ball hole 18, at this time, the limiting protrusion 5 enters the limiting groove 6 on the adapter collet 2 to limit the relative rotation of the two, then the outer sliding sleeve 7 is released, the return spring 9 pushes the collet sleeve 8 downward, moves the collet sleeve 8 and the outer sliding sleeve 7 downward to reset, until the collet sleeve 8 moves to the initial position opposite to the ball hole 18, at this time, the outer sliding sleeve 7 abuts against the second step 24, the collet sleeve 8 internally presses the steel ball 17, the steel ball 17 is clamped into the annular groove 15 to lock the relative movement of the stirring rod 3 and the adapter collet 2, and the installation is completed; when it is needed to disassemble the stirring rod 3 from the quick connection structure, the user first lifts the outer sliding sleeve 7 relative to the adapter collet 2, moves the outer sliding sleeve 7 and the collet sleeve 8 upward to the position where the clearance groove 22 is opposite to the ball hole 18, so that the steel ball 17 is not limited externally, the steel ball 17 can move outward to move out of the annular groove 15, at this time, the user can pull the stirring rod 3 downward to separate from the adapter collet 2.

[0042] The patent only needs to lift the outer sliding sleeve 7 when disassembling and assembling the stirring rod 3, then inserts or pulls out the stirring rod 3 into or out of the channel 10, which is convenient to disassemble and assemble without the need of auxiliary tools.

[0043] The adapter sleeve 2 is preferably provided with three ball holes 18 on the circumferential wall, and each of the ball holes 18 is provided with a steel ball 17 matched with the annular groove 15.

[0044] The upper end of the adapter sleeve 2 is provided with a connecting part detachably connected with the output shaft on the mixer body, and the connecting part can be a threaded connecting part 20. The adapter sleeve 2 is screwed with the output shaft through the threaded connecting part 20. The adapter sleeve 2 is provided with two cutting surfaces 19 on the symmetrical positions of the two sides of the circumferential wall, and the two cutting surfaces 19 are parallel to each other, which are used for the wrench to rotate the adapter sleeve 2 and separate the adapter sleeve 2 from the output shaft.

[0045] Figure 5 As shown, the lower end of the adapter sleeve 2 is provided with two elastic edges 13, and the two elastic edges 13 have a spacing therebetween to form the above-mentioned limiting groove 6 between the two elastic edges 13. The elastic edge 13 can be elastically deformed after being pressed. Preferably, the limiting groove 6 is formed on the circumferential wall of the lower end of the adapter sleeve 2, and the limiting groove 6 has an opening located on the lower edge of the adapter sleeve 2. The circumferential wall of the adapter sleeve 2 on the two sides of the limiting groove 6 is provided with a long groove 14 extending upward from the lower edge of the adapter sleeve 2, so as to form the two elastic edges 13 on the circumferential wall of the adapter sleeve 2. The long groove 14 has a width for the elastic edge 13 to be elastically deformed after being pressed by the limiting protrusion 5.

[0046] When the mixer body is started, the adapter sleeve 2 rotates, and the adapter sleeve 2 drives the stirring rod 3 to rotate by contacting the limiting protrusion 5 through the elastic edge 13. During the starting process, the limiting protrusion 5 presses the elastic edge 13 on one side to make the elastic edge 13 elastically deform. The elastic edge 13 absorbs the impact between the limiting protrusion 5 and the adapter sleeve 2 through the elastic deformation, so as to slow down the starting impact of the stirring rod 3 on the adapter sleeve 2, and avoid the damage of the stirring rod 3 and the adapter sleeve 2 caused by the impact. The elastic edges 13 on the two sides are respectively used for contacting the limiting protrusion 5 during the forward rotation and the reverse rotation.

[0047] Preferably, the two long grooves 14 are located on the symmetrical positions of the two sides of the limiting groove 6.

[0048] The channel 10 is provided with an auxiliary spring 11, and the auxiliary spring 11 provides a downward elastic force on the stirring rod 3 inserted into the channel 10. When the stirring rod 3 is disassembled, the outer sleeve 7 is lifted upward to make the steel ball 17 outwardly separate from the annular groove 15. At this time, the elastic force of the auxiliary spring 11 acts on the stirring rod 3, and the stirring rod 3 has an outward pushing force, so as to facilitate the stirring rod 3 to separate from the adapter sleeve 2.

[0049] The circumferential wall of the adapter sleeve 2 is provided with a pin hole communicated with the channel 10, and the pin hole is provided with a pin 12. The pin 12 is inserted into the channel 10 to fix the auxiliary spring 11 in the channel 10.

[0050] A plurality of grooves 21 are arranged on the inner wall of the outer sleeve 7, which reduces the contact area between the outer sleeve 7 and the adapter chuck 2, thereby reducing the friction of relative movement.

[0051] A fourth step 16 for receiving force when the outer sleeve 7 is lifted by hands is arranged on the outer wall of the outer sleeve 7, which facilitates the user to lift the outer sleeve 7.

[0052] The quick connection structure of the stirring rod and the handheld lithium battery stirrer are introduced above, and the principle and implementation mode of the present application are described by applying specific examples. The above examples are only used to help understand the present application and the core idea. It should be pointed out that for ordinary skilled persons in the technical field, without departing from the principle of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A quick connection structure of a stirring rod, characterized by comprising: The adapter sleeve includes an adapter sleeve, an elastic member and a sliding sleeve assembly, the adapter sleeve is internally provided with a channel for inserting a stirring rod, a ball hole is arranged on the side wall of the adapter sleeve and is in communication with the channel, a steel ball is arranged in the ball hole, an annular groove is arranged on the side wall of the stirring rod and is matched with the steel ball, the sliding sleeve assembly is sleeved on the outside of the adapter sleeve, the sliding sleeve assembly can slide up and down relative to the adapter sleeve to make the steel ball enter or leave the annular groove, the elastic member provides an elastic force for resetting the sliding sleeve assembly, a limiting assembly for limiting relative rotation is arranged between the adapter sleeve and the stirring rod, the limiting assembly includes two elastic edges arranged at the lower end of the adapter sleeve and a limiting protrusion arranged on the side wall of the stirring rod, the two elastic edges are elastically deformed under pressure, a limiting groove for the limiting protrusion to enter is formed between the two elastic edges, the limiting protrusion is clamped in the limiting groove to limit the relative rotation of the stirring rod and the adapter sleeve.

2. The quick connection structure of a stirring rod according to claim 1, wherein The limiting groove is arranged on the side wall of the lower end of the adapter sleeve, and the limiting groove has an opening on the lower edge of the adapter sleeve, long grooves are arranged on the side walls of the adapter sleeve on the two sides of the limiting groove and extend upward from the lower edge of the adapter sleeve, so that the elastic edges are formed between the long grooves and the limiting groove, and the long grooves have a width for the elastic edges to be elastically deformed after being extruded by the limiting protrusion.

3. The quick connection structure of a stirring rod according to claim 2, wherein The two long grooves are arranged at symmetrical positions on the two sides of the limiting groove.

4. The quick connection structure of a stirring rod according to claim 1, wherein An auxiliary spring is arranged in the channel and acts on the stirring rod inserted in the channel to provide a downward elastic force for the stirring rod.

5. The quick connection structure of a stirring rod according to claim 1, wherein High and low positions are arranged on the inner wall of the sliding sleeve assembly, the sliding sleeve assembly slides relative to the adapter sleeve to make the high or low position opposite to the ball hole, when the sliding sleeve assembly moves to the position where the high position is opposite to the ball hole, the high position pressurizes the steel ball in the ball hole to make the steel ball clamped in the annular groove on the stirring rod, and when the sliding sleeve assembly moves to the position where the low position is opposite to the ball hole, the steel ball can move outward to leave the annular groove on the stirring rod.

6. The quick connection structure of a stirring rod according to claim 5, wherein The sliding sleeve assembly includes an outer sleeve and a sleeve sleeve arranged in the outer sleeve, the outer sleeve and the sleeve sleeve are sleeved on the outside of the adapter sleeve, a first step for the lower part of the sleeve sleeve to abut against is arranged on the inner wall of the outer sleeve, a giving groove is formed between the sleeve sleeve and the inner wall of the front part of the outer sleeve, the sleeve sleeve and the giving groove have a height difference to form the high and low positions, a second step on the lower side of the ball hole and a third step on the upper side of the ball hole are arranged on the side wall of the adapter sleeve, the second step serves as the abutting position of the lower part of the outer sleeve, the elastic member includes a reset spring sleeved on the outside of the adapter sleeve, the lower end of the reset spring abuts against the upper part of the sleeve sleeve, and the upper end of the reset spring abuts against the third step. In the initial state, the outer sleeve abuts against the second step, the sleeve sleeve is arranged at the position opposite to the ball hole, the steel ball is extruded inward by the sleeve sleeve and clamped in the annular groove on the stirring rod to form locking, In the unlocking state, the outer sleeve drives the sleeve sleeve to move upward to the position where the giving groove is opposite to the ball hole, and the steel ball can move outward to leave the annular groove on the stirring rod.

7. The quick connection structure of a stirring rod according to claim 6, wherein A fourth step for receiving force when the hand is lifted up is arranged on the outer side wall of the outer sleeve.

8. The quick connection structure of a stirring rod according to claim 6, wherein A plurality of grooves are arranged on a circle of the inner wall of the outer sleeve.

9. The quick connection structure of a stirring rod according to claim 1, wherein A connecting position for detachably connecting with an output shaft on the main body of the stirrer is arranged at the upper end of the adapter sleeve.

10. A hand-held lithium battery mixer characterized by, A quick connection structure including a blender main body having an output shaft for outputting a rotational power and a stirring rod according to any one of claims 1 to 9, and a coupling collet connected to the output shaft.

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