A rapidly adjustable, telescopic, and standardized mixing head structure

Abstract

The utility model discloses a rapidly adjustable telescopic universal standardized stirring head structure, including a telescopic tube and a stirring rod, wherein the stirring rod is axially inserted into the telescopic tube; and also includes an adjustment structure, wherein the adjustment structure includes a through ball groove provided on the telescopic tube, wherein a steel ball is provided in the ball groove, and the stirring rod is circumferentially provided with an annular groove for accommodating the steel ball, and also includes a locking sleeve sleeved outside the telescopic tube. The utility model adopts the form of a telescopic tube and a stirring rod to realize telescopic adjustment, so that the whole formed by the telescopic tube and the stirring rod can be connected to an electric tool, and can be adapted to different products through different connectors, and has strong applicability; an adjustment structure is provided between the telescopic tube and the stirring rod, and the unlocking and locking of the stirring rod is realized by utilizing the limiting and matching between the steel ball and the locking sleeve, and the operation is simple and fast, and the user experience is friendly.

Description

Technical Field

[0001] The utility model belongs to the field of electric tools and relates to a rapidly adjustable telescopic universal standardized stirring head structure. Background Art

[0002] A mixer tool is a tool that is powered by a motor, transmits rotational motion through a two-stage or three-stage gear pair, and uses and configures a mixing head to transmit rotational torque to achieve the purpose of mixing operations.

[0003] Among the existing mixer products, the mixing head as the main structure is usually in the form of a straight rod with a certain length. Due to the diverse connection methods of different products, the mixing head is usually dedicated to a specific machine, so many mixing head structures do not have the function of length adjustment. The individual users and heights are different, and bending or lifting actions are often required during operation. The operation intensity is high, and long-term operation can easily lead to potential occupational disease risks such as lumbar muscle strain, spinal curvature, and periarthritis of the shoulder. Some products can have a certain length adjustment, but the telescopic position is usually tightened and loosened by a threaded connection, and the structural strength is difficult to guarantee, especially under the high-intensity operation of the mixing head, which is prone to failure. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a rapidly adjustable telescopic universal standardized stirring head structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A quickly adjustable telescopic universal standardized stirring head structure comprises a telescopic tube and a stirring rod, wherein the stirring rod is axially inserted into the telescopic tube; and an adjusting structure, wherein the adjusting structure comprises a through ball groove opened on the telescopic tube, wherein a steel ball is arranged in the ball groove, and wherein the stirring rod is circumferentially provided with an annular groove for accommodating the steel ball, and further comprises a locking sleeve sleeved outside the telescopic tube, wherein the inner circumference of the locking sleeve is formed with a locking wall for abutting against the steel ball when the steel ball is located in the annular groove.

[0007] Furthermore, a chamfered structure expanding outward is provided on a side of the locking wall facing the steel ball.

[0008] Furthermore, it also includes a spring, the outer circumference of the telescopic tube is provided with a step, the spring sleeve is arranged outside the telescopic tube, and the two ends of the spring are respectively against the step and the locking sleeve.

[0009] Furthermore, the outer sleeve of the lock sleeve is provided with a quick-change head, the inner circumference of the quick-change head is provided with a flange, and the flange abuts against an end of the lock sleeve away from the spring along the axial direction of the telescopic tube.

[0010] Furthermore, an abutment wall is formed on the inner periphery of the quick-change head for abutting against the outer side of the steel ball along the radial direction of the telescopic tube.

[0011] Furthermore, a retaining ring is sleeved on the outside of the telescopic tube and is used to abut against the quick-change head along the axial direction.

[0012] Furthermore, the number of the annular grooves is set to be multiple, and they are distributed in sequence along the axial direction of the stirring rod.

[0013] Furthermore, the cross-section of the annular groove is a semicircular structure.

[0014] Furthermore, one axial end of the telescopic tube is also provided with a connector for connecting to an electric drive tool.

[0015] Furthermore, the projected cross section of the stirring rod along the axial direction is a polygonal structure.

[0016] In summary, the utility model is beneficial in that:

[0017] The utility model adopts the form of a telescopic tube and a stirring rod to achieve telescopic adjustment, so that the whole formed by the telescopic tube and the stirring rod can be connected to the power tool, and can be adapted to different products through different connecting heads, and has strong applicability; an adjustment structure is arranged between the telescopic tube and the stirring rod, and the unlocking and locking of the stirring rod are achieved by utilizing the limiting and cooperation between the steel ball and the locking sleeve. The operation is simple and quick, and the user experience is friendly; the form of cooperation between the steel ball and the annular groove, together with the circumferential limiting of the stirring rod and the telescopic tube, greatly improves the structural connection strength between the telescopic tube and the stirring rod, thereby ensuring safety even under high-intensity operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the stirring head structure of the utility model.

[0019] Figure 2 for Figure 1 Schematic diagram of the explosion structure.

[0020] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of the middle adjustment structure in the locked state.

[0021] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of the middle adjustment structure in the unlocked state.

[0022] Figure 5 The present invention is a structural schematic diagram of a stirring head structure in which a fastening structure is added.

[0023] Figure 6 for Figure 5 Schematic diagram of the explosion structure.

[0024] Figure 7 for Figure 5 Schematic diagram of the cross-sectional structure when the fastening structure is tightened.

[0025] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure when the fastening structure is loosened.

[0026] Markings in the figure: 1. Telescopic tube; 2. Stirring rod; 21. Annular groove; 3. Adjustment structure; 31. Locking sleeve; 311. Locking wall; 32. Spring; 33. Quick-change head; 331. Abutment wall; 34. Steel ball; 35. Ball groove; 36. Step; 37. Retaining ring; 4. Nut; 41. Sleeve; 5. Connector. DETAILED DESCRIPTION

[0027] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0028] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0029] All directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, horizontal, vertical...) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0030] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of the present invention may actually be an approximately parallel relationship, and the vertical relationship may actually be an approximately vertical relationship.

[0031] The utility model provides a rapidly adjustable telescopic universal standardized stirring head structure, which is mainly used for existing electric tools, in particular for the rapid telescopic adjustment function of the stirring head in a stirrer.

[0032] Reference Figure 1 and Figure 2 The stirring head structure includes a connecting head 5, a telescopic tube 1, an adjustment structure 3, and a stirring rod 2. The connecting head 5 is installed at one end of the stirring head structure in the axial direction, so that the stirring head structure is fixedly connected to the electric driving tool through the connecting head 5, so that the rotating motor of the electric driving tool can drive the rotation of the entire stirring head structure. The stirring rod 2 is installed at the other end of the stirring head structure in the axial direction, and the end of the stirring rod 2 is formed as a stirring head for stirring.

[0033] By setting the connecting head 5 of different specifications, the stirring head structure can be connected to electric drive tools of different models to provide different stirring parameter requirements. The connecting head 5 includes a central part and connecting parts respectively arranged on both sides of the central part, wherein the connecting part on one side is a short screw structure with a thread on the outer periphery, which is used for threaded connection with one end of the telescopic tube 1, and the connecting part on the other side can be a short screw structure with an outer peripheral thread, or a threaded barrel structure with an inner peripheral thread, which is used for connecting to electric drive tools of different models. The electric drive tool is a common tool in the prior art for providing rotational drive, and is widely used in a variety of electric tools.

[0034] The central portion of the connector 5 is in a polygonal structure, so as to facilitate the user's manual or tool-twisting operation and installation.

[0035] The telescopic tube 1 is an axially hollow columnar structure, and has two openings at both ends in the axial direction, one of which is connected to the connector 5. The stirring rod 2 is inserted into the telescopic tube 1 from the other opening and can slide relatively along the axial direction of the telescopic tube 1 to achieve a change in the total length of the telescopic tube 1 and the stirring rod 2 in the axial direction.

[0036] The regulating structure 3 is used to realize the switching between two states: a state where the stirring rod 2 is telescopic along the axial direction of the telescopic tube 1 and a state where the stirring rod 2 is relatively locked and fixed to the telescopic tube 1 .

[0037] Specifically, refer to Figure 3 , 4 The adjustment structure 3 includes a locking sleeve 31, a spring 32, and a steel ball 34. The locking sleeve 31 is annular and coaxially sleeved on the outer periphery of the telescopic tube 1. The outer periphery of the telescopic tube 1 is also protrudingly provided with a step 36. The spring 32 is coaxially sleeved on the outer periphery of the telescopic tube 1. The axial ends of the spring 32 respectively abut against the locking sleeve 31 and the step 36. The spring 32 provides an elastic force for the locking sleeve 31 to move axially relative to the telescopic tube 1.

[0038] The outer circumference of the telescopic tube 1 is provided with a plurality of ball grooves 35 penetrating the telescopic tube 1, and the plurality of ball grooves 35 are preferably arranged in a circumferential annular array along the telescopic tube 1 in this embodiment, the steel balls 34 are arranged one by one in the ball grooves 35, and in the radial direction of the telescopic tube 1, both ends of the steel balls 34 can protrude from the openings on both sides of the ball grooves 35, and the steel balls 34 can move relative to the ball grooves 35 in the radial direction.

[0039] Among them, one end of the locking sleeve 31 in the axial direction is against the spring 32, and the other end is against the steel ball 34, and a locking groove is formed on the inner circumference of the locking sleeve 31 at the end where the locking sleeve 31 is against the steel ball 34, and the axial opening position of the locking groove is set to a chamfered structure expanding outward. When the locking sleeve 31 moves toward the steel ball 34 and further presses against the steel ball 34, the chamfered structure at the opening of the locking groove will press against the steel ball 34, generating a force on the steel ball 34 in the radial inward direction of the telescopic tube 1. When the steel ball 34 can move radially inward, the locking sleeve 31 can move further in the axial direction, so that the steel ball 34 enters the locking groove in the axial direction and presses against the inner wall of the locking groove, so that the steel ball 34 is restricted by the locking groove and cannot move radially outward.

[0040] A plurality of annular grooves 21 are arranged on the outer circumference of the stirring rod 2. The annular grooves 21 are arranged in the circumference of the stirring rod 2 with the axis of the stirring rod 2 as the center, and the plurality of annular grooves 21 are distributed in sequence along the axial direction of the stirring rod 2. There is a set spacing between adjacent annular grooves 21. The annular grooves 21 are semicircular in cross section with the axis of the stirring rod 2, so that the steel balls 34 can fall into the annular grooves 21. At the same time, the semicircular setting enables the stirring rod 2 to generate a radial outward force on the steel balls 34 along the telescopic tube 1 when the stirring rod 2 moves axially.

[0041] In this embodiment, the stirring rod 2 and the telescopic tube 1 are in an unlocked state when they can move relative to each other. Figure 4 At this time, any annular groove 21 on the stirring rod 2 is not directly opposite to the ball groove 35 in the axial direction of the telescopic tube 1, so the steel ball 34 is against the outer periphery of the stirring rod 2. At this time, the steel ball 34 cannot move radially inward, and then the locking sleeve 31 is against one side of the steel ball 34, and the steel ball 34 does not enter the locking groove. At this time, the stirring rod 2 can still move axially relative to the telescopic tube 1.

[0042] When the stirring rod 2 is axially moved so that any one of the annular grooves 21 is axially opposite to the ball groove 35, it is regarded as a locked state. Figure 3At this time, the steel ball 34 can fall into the annular groove 21 radially inwardly under the push of the locking sleeve 31, and at the same time fall into the locking groove. The locking groove and the annular groove 21 restrict the steel ball 34 on both sides, so that it cannot move radially outward. At this time, the steel ball 34 also forms an axial restriction on the stirring rod 2, so that the stirring rod 2 cannot move axially relative to the telescopic tube 1, forming a relative locking fixation.

[0043] Furthermore, the adjustment structure 3 also includes a quick-change head 33, which is sleeved on the outside of the locking sleeve 31 and can move axially relative to the telescopic tube 1. The inner circumference of the quick-change head 33 is formed with an abutment wall 331. In the unlocked state, the abutment wall 331 abuts against the outer side of the steel ball 34 along the radial direction of the telescopic tube 1 to prevent the steel ball 34 from further moving outward. The inner circumference of the quick-change head 33 is also provided with a flange, which abuts against the locking sleeve 31 in the axial direction of the telescopic tube 1 and abuts against one end of the locking sleeve 31 away from the spring 32. When the spring 32 pushes the locking sleeve 31 to move, it will synchronously drive the quick-change head 33 to move. Furthermore, the outer circumference of the telescopic tube 1 is also provided with a retaining ring 37. In the locked state, the quick-change head 33 abuts against the retaining ring 37 along the axial direction to prevent the locking sleeve 31 and the quick-change head 33 from being further pushed by the spring 32.

[0044] In actual usage scenarios, the user can actively move the quick-change head 33, and synchronously drive the sleeve to move and compress the spring 32, so that the locking groove remains in a position disengaged from the steel ball 34, and even the locking sleeve 31 can be disengaged from the steel ball 34. When maintained in this state, the radially movable position of the steel ball 34 can reach the abutment wall 331 at the farthest, and then the steel ball 34 can be disengaged from the annular groove 21, without forming an axial restriction on the stirring rod 2. At this time, the user can arbitrarily adjust the extension and retraction of the stirring rod 2 relative to the telescopic tube 1.

[0045] After the user moves the stirring rod 2 to make any annular groove 21 close to the steel ball 34, the user can loosen the quick-change head 33, and the locking sleeve 31 will press against the steel ball 34 again under the action of the spring 32. At this time, when the user further slowly moves the stirring rod 2, when the annular groove is aligned with the ball groove 35, the steel ball 34 falls into the annular groove 21 and the locking groove under the action of the locking sleeve 31, and the spring 32 further pushes the quick-change head 33 to press against the retaining ring 37, and the locking of the stirring rod 2 and the telescopic tube 1 is completed.

[0046] In actual application scenarios, the longer axial setting of the stirring head structure causes the torsion it is subjected to to be larger during high-speed rotation. Therefore, the overall structural strength and connection strength of the stirring head structure need to be guaranteed to a certain extent, especially the part between the stirring rod 2 and the telescopic tube 1, which may become loose during high-speed rotation. Therefore, in this embodiment, it is preferred that the stirring rod 2 has a polygonal structure in the axial projection cross-section, preferably a hexagon, and the hollow part in the telescopic tube 1 also has a corresponding hexagonal structure. When the stirring rod 2 is inserted into the telescopic tube 1, the outer wall of the stirring rod 2 and the inner wall of the telescopic tube 1 are gap-matched, and the polygonal structure prevents relative rotation between the two. It is further tightened by adjusting the structure 3, and thus has greatly improved stability compared to the circle.

[0047] In actual application scenarios, in order to ensure the relative activity relationship between the stirring rod 2 and the telescopic tube 1, the friction between the stirring rod 2 and the telescopic tube 1 is limited, and may be affected by the processing accuracy, so that the friction between the stirring rod 2 and the telescopic tube 1 is relatively small, making it easier for the stirring rod 2 and the telescopic tube 1 to slide. Therefore, when the user needs to make telescopic adjustments and actively moves the quick-release head to loosen the steel ball 34, the stirring rod 2 may slide down quickly due to its own weight, or even slip off, causing unnecessary trouble. When adjusting the telescopic length, the user usually makes small adjustments based on the current length, and the rapid slippage makes the user uncertain about the position before adjustment, thereby increasing the adjustment time.

[0048] In this embodiment, a fastening structure is further provided. Figure 5 , Figure 6 The fastening structure includes a sleeve 41 arranged at the front end of the telescopic tube 1 and extending in the axial direction. A plurality of through grooves are arranged on the circumference of the sleeve 41. The through grooves are radially connected to the inner side and the outer side of the sleeve 41, and the through grooves are extended in the axial direction of the telescopic tube 1. The number of the through grooves is preferably four, and they are arranged in an array, and the sleeve 41 is evenly divided into four parts. The sleeve 41 is a gradually conical structure in the axial direction toward the stirring rod 2, that is, the outer periphery of the sleeve 41 has a certain inclination relative to the axis of the telescopic tube 1, and the outer periphery of the sleeve 41 is provided with a thread. A nut 4 is coaxially sleeved on the outer side of the sleeve 41. Referring to Figure 6 and Figure 7 The nut 4 can be threadedly connected with the sleeve 41, and in the process of tightening the nut 4 with the sleeve 41 in the direction of the telescopic tube 1, the various parts of the sleeve 41 are squeezed by the nut 4 and deformed inward, thereby gradually coming into close contact with the stirring rod 2, increasing the friction between the stirring rod 2 and the stirring rod 2, and limiting or completely limiting the relative sliding of the stirring rod 2.

[0049] The setting of the fastening structure forms a further fixing effect between the stirring rod 2 and the telescopic tube 1 when fully fastened, thereby ensuring the overall strength of the stirring head structure, and the user can adjust the tightness of the nut 4 to adjust the friction between the stirring rod 2 and the telescopic tube 1, so as to limit the moving speed of the stirring rod 2 when performing telescopic adjustment of the adjustment structure 3, so that the user can make more precise fine adjustments.

[0050] The nut 4 is a butterfly nut 4, which is more convenient for users to operate.

[0051] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

Claims

1. A rapidly adjustable telescopic universal standardized stirring head structure, characterized in that: The invention comprises a telescopic tube (1) and a stirring rod (2), wherein the stirring rod (2) is axially inserted into the telescopic tube (1); and an adjusting structure (3), wherein the adjusting structure (3) comprises a ball groove (35) which is through-opened on the telescopic tube (1), wherein a steel ball (34) is arranged in the ball groove (35), and the stirring rod (2) is circumferentially provided with an annular groove (21) for accommodating the steel ball (34); and further comprises a locking sleeve (31) which is sleeved on the outside of the telescopic tube (1), wherein the inner circumference of the locking sleeve (31) is formed with a locking wall (311) for abutting against the steel ball (34) when the steel ball (34) is located in the annular groove (21).

2. The structure of a rapidly adjustable, telescopic and universally standardized stirring head according to claim 1, characterized in that: A chamfered structure expanding outward is provided on one side of the locking wall (311) facing the steel ball (34).

3. The structure of a rapidly adjustable, telescopic and universal standardized stirring head according to claim 1, characterized in that: It also comprises a spring (32), the outer periphery of the telescopic tube (1) is provided with a step (36), the spring (32) is sleeved outside the telescopic tube (1), and the two ends of the spring (32) respectively abut against the step (36) and the locking sleeve (31).

4. The structure of a rapidly adjustable, telescopic and universally standardized stirring head according to claim 3, characterized in that: The outer cover of the locking sleeve (31) is provided with a quick-change head (33), and the inner circumference of the quick-change head (33) is provided with a flange, and the flange abuts against an end of the locking sleeve (31) away from the spring (32) along the axial direction of the telescopic tube (1).

5. The structure of a rapidly adjustable, telescopic and universally standardized stirring head according to claim 4, characterized in that: An abutment wall (331) is formed on the inner periphery of the quick-change head (33) for abutting against the outer side of the steel ball (34) along the radial direction of the telescopic tube (1).

6. The structure of a rapidly adjustable, telescopic and universally standardized stirring head according to claim 4, characterized in that: The telescopic tube (1) is also sleeved with a retaining ring (37) for abutting against the quick-change head (33) along the axial direction.

7. The structure of a rapidly adjustable, telescopic and universally standardized stirring head according to claim 1, characterized in that: The number of the annular grooves (21) is set to be multiple, and they are distributed in sequence along the axial direction of the stirring rod (2).

8. The structure of a rapidly adjustable, telescopic, universal, standardized stirring head according to claim 7, characterized in that: The cross section of the annular groove (21) is a semicircular structure.

9. The structure of a rapidly adjustable, telescopic and universally standardized stirring head according to claim 1, characterized in that: One axial end of the telescopic tube (1) is also provided with a connector (5) for connecting to an electric drive tool.

10. The structure of a rapidly adjustable, telescopic and universally standardized stirring head according to claim 1, characterized in that: The projected cross section of the stirring rod (2) along the axial direction is a polygonal structure.

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