Ball joint structure and gardening tool

Abstract

The invention relates to the technical field of ball joint devices, in particular to a ball joint structure and a gardening tool. The ball joint structure comprises a rotating assembly, a return assembly, a movable rod and a movable part, the movable part and the return assembly are connected with the rotating assembly through the movable rod, the movable part is connected to the end, away from the rotating assembly, of the movable rod, the return assembly is located between the rotating assembly and the movable part, and the movable part can rotate around the rotating center of the rotating assembly; the return assembly comprises an elastic reset structure, and the elastic reset structure can apply reverse elastic restoring force to the movable rod when the movable part rotates so that the movable part can automatically return. According to the ball joint structure, the original flexible steering characteristic of the ball joint is reserved, and meanwhile the automatic returning function is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ball joint devices, in particular to a ball joint structure and a garden tool. BACKGROUND

[0002] Ball joints, as a common mechanical connection structure, are widely used in various mechanisms requiring multi-degree-of-freedom movement. A ball joint is usually composed of a ball head and a socket, has good rotational flexibility, and can realize deflection movement in multiple directions. However, in actual application, the ball joint usually cannot automatically return to the initial position after completing the deflection action, and cannot effectively ensure the stability and repeatability of the system. SUMMARY

[0003] The purpose of the present application is to provide a ball joint structure and a garden tool to alleviate the problem that the ball joint in the prior art cannot automatically return to the initial position after completing the deflection action, and cannot effectively ensure the stability and repeatability of the system.

[0004] To solve the above technical problems, the technical solution provided by the present application is as follows: In a first aspect, the present application provides a ball joint structure, comprising: a rotating assembly, a return assembly, a movable rod and a movable part, the movable part and the return assembly are connected to the rotating assembly through the movable rod, the movable part is connected to one end of the movable rod away from the rotating assembly, the return assembly is located between the rotating assembly and the movable part, and the movable part can rotate around the center of rotation of the rotating assembly. The return assembly comprises an elastic return structure, which can exert an opposite elastic restoring force on the movable rod when the movable part rotates, so as to automatically return the movable part.

[0005] Further, the elastic return structure comprises a plurality of torsional springs, the return assembly further comprises a base and a housing, the base is sleeved on the outside of the movable rod, the housing is installed on the rotating assembly, the torsional springs and the base are arranged in the housing, and the plurality of torsional springs are uniformly distributed along the circumference of the base.

[0006] Further, the torsional spring comprises an elastic part and a connecting part, one end of the connecting part is fixedly connected with the base, the other end extends outward to the inner wall of the housing, and the elastic part is arranged around the connecting part.

[0007] Furthermore, the connecting portion includes a first fixed segment, a bending segment and a second fixed segment connected in a U-shape, the first fixed segment and the second fixed segment are symmetrically arranged, the two ends of the bending segment are respectively connected to the first fixed segment and the second fixed segment, and the first fixed segment and the second fixed segment are each provided with an elastic portion.

[0008] Furthermore, the elastic reset structure includes an integrally formed elastic member, and a through hole for passing the movable rod is provided in the middle of the elastic member.

[0009] Furthermore, the elastic member is made of elastic material.

[0010] Furthermore, the ball joint structure further includes a fixed portion arranged opposite to the movable portion, and the rotating assembly is mounted on the fixed portion.

[0011] Furthermore, the rotating assembly includes a ball and a ball sleeve, the ball sleeve is installed on the fixed part, the ball is rotatably installed inside the ball sleeve, and the movable rod is installed on one end of the ball away from the fixed part.

[0012] Furthermore, the movable rod and the movable part are connected via a movable rod sleeve.

[0013] In a second aspect, the present invention provides a gardening tool comprising the ball joint structure described in the first aspect.

[0014] The present invention brings at least the following beneficial effects: The present invention provides a ball joint structure, comprising: a rotating assembly, a return assembly, a movable rod and a movable part, wherein the movable part and the return assembly are connected to the rotating assembly through the movable rod, the movable part is connected to one end of the movable rod away from the rotating assembly, the return assembly is located between the rotating assembly and the movable part, and the movable part can rotate around the rotation center of the rotating assembly; the return assembly includes an elastic reset structure, which can apply a reverse elastic restoring force to the movable rod when the movable part rotates, so that the movable part automatically returns to its original position.

[0015] The movable rod is the main axis of the ball joint structure, allowing the movable part to move in all directions with the rotating assembly as the rotation center. The movable part is the output end of the ball joint structure and can move in any direction within the rotation range. The ball joint structure adds a return assembly on the basis of the traditional ball joint. The restoring torque generated by its elastic deformation drives the movable part to automatically return to its initial position. When the movable part rotates, the elastic reset structure will apply an elastic restoring force in the opposite direction to the movable rod, thereby realizing the automatic return function. This design not only retains the original flexible steering characteristics of the ball joint, but also realizes the autonomous return function, and has good engineering application prospects. In addition, the return assembly is set on the movable rod, and the modular design facilitates disassembly and replacement.

[0016] When the ball joint structure of the present application is applied to garden tools, such as a backpack hair dryer, the blowpipe can be automatically reset through the return assembly, and has a longer service life than the rubber bellows commonly used in the industry.

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in related technologies, the following briefly introduces the drawings required for use in the specific embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 The explosion of the ball joint structure provided by the embodiment of the present invention Figure 1 ; Figure 2 The explosion of the ball joint structure provided by the embodiment of the present invention Figure 2 ; Figure 3 A schematic structural diagram of a return assembly provided by an embodiment of the present invention; Figure 4 A cross-sectional view of a ball joint structure provided by an embodiment of the present invention.

[0020] icon: 100-rotation assembly; 110-sphere; 120-ball sleeve; 200-return assembly; 210-torsion spring; 211-elastic part; 212-connecting part; 2121-first fixed section; 2122-bending section; 2123-second fixed section; 220-base; 230-housing; 240-elastic part; 300-movable rod; 400-movable part; 500-fixed part; 600-movable rod sleeve. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0023] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Physical quantities in formulas, unless separately marked, should be understood as basic quantities of the International System of Units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation or integration.

[0024] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0025] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0026] The following describes some embodiments of the present invention in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0027] Example 1 Ball joints typically consist of a ball head and a socket, offering excellent rotational flexibility and enabling multi-directional deflection. However, in practical applications, ball joints often fail to automatically return to their initial position after completing a deflection motion, making it difficult to effectively guarantee system stability and repeatable positioning accuracy.

[0028] In view of this, an embodiment of the present invention provides a ball joint structure, including: a rotating component 100, a return component 200, a movable rod 300 and a movable part 400, the movable part 400 and the return component 200 are both connected to the rotating component 100 through the movable rod 300, the movable part 400 is connected to the end of the movable rod 300 away from the rotating component 100, the return component 200 is located between the rotating component 100 and the movable part 400, and the movable part 400 can rotate around the rotation center of the rotating component 100; the return component 200 includes an elastic reset structure, which can apply a reverse elastic restoring force to the movable rod 300 when the movable part 400 rotates, so that the movable part 400 automatically returns to its original position.

[0029] The movable rod 300 is the movable main axis of the ball joint structure, which enables the movable part 400 to move in all directions with the rotating component 100 as the rotation center. The movable part 400 is the output end of the ball joint structure and can move in any direction within the rotation range. The ball joint structure adds a return component 200 on the basis of the traditional ball joint, which drives the movable part 400 to automatically return to the initial position through the restoring torque generated by its elastic deformation. When the movable part 400 rotates, the elastic reset structure will apply an elastic restoring force in the opposite direction to the movable rod 300, thereby realizing the function of automatic return. This design not only retains the original flexible steering characteristics of the ball joint, but also realizes the autonomous return function, and has good engineering application prospects. In addition, the return component 200 is arranged on the movable rod 300, and the modular design facilitates disassembly and replacement.

[0030] When the ball joint structure of the present application is applied to garden tools, such as a backpack hair dryer, the blowpipe can be automatically reset through the return assembly 200, and has a longer service life than the rubber bellows commonly used in the industry.

[0031] This embodiment provides two different configurations of the elastic reset structure.

[0032] Method 1: The elastic reset structure includes multiple torsion springs 210, and the return assembly 200 also includes a base 220 and a shell 230. The base 220 is sleeved on the outside of the movable rod 300, and the shell 230 is installed on the rotating assembly 100. The torsion springs 210 and the base 220 are both arranged in the shell 230, and the multiple torsion springs 210 are evenly distributed along the circumference of the base 220.

[0033] For details, please see Figure 1 、 Figure 3 and Figure 4 The outer shell 230 is installed as a whole inside the rotating assembly 100, and the torsion spring 210 and the base 220 are both installed inside the outer shell 230, and the base 220 is sleeved on the movable rod 300. In this embodiment, four torsion springs 210 are evenly distributed along the circumference of the base 220, that is, a torsion spring 210 is set every 90°, so as to achieve the application of elastic restoring force in any direction to the movable rod 300. In addition, more torsion springs 210 can be set along the circumference of the base 220, as long as it is ensured that the circumferential range of 360° is covered. When the movable part 400 rotates under the action of the movable rod 300, the torsion spring 210 can apply a reverse elastic restoring force to the movable rod 300, so that the movable part 400 automatically returns to its position.

[0034] In an optional manner of this embodiment, the torsion spring 210 includes an elastic portion 211 and a connecting portion 212 , one end of the connecting portion 212 is fixedly connected to the base 220 , and the other end extends outward to the inner wall of the shell 230 , and the elastic portion 211 is wound around the connecting portion 212 .

[0035] See Figure 3 Regarding the specific structure of each torsion spring 210, the connecting portion 212 provides fixing and support, while the elastic portion 211 is wound around the connecting portion 212 and provides elastic return. Adjacent connecting portions 212 are perpendicular to each other, and an elastic portion 211 is provided on both sides of each connecting portion 212, thereby facilitating the application of elastic force to the movable rod 300.

[0036] Specifically, the connecting portion 212 includes a first fixed segment 2121, a bent segment 2122 and a second fixed segment 2123 connected in a U-shape. The first fixed segment 2121 and the second fixed segment 2123 are symmetrically arranged. The two ends of the bent segment 2122 are respectively connected to the first fixed segment 2121 and the second fixed segment 2123. The first fixed segment 2121 and the second fixed segment 2123 are each provided with an elastic portion 211.

[0037] See Figure 3 One end of the first fixing section 2121 and the second fixing section 2123 are fixed to the base 220, and the other ends are fixedly connected to the two ends of the bent section 2122. An elastic portion 211 is respectively disposed around the end of the first fixing section 2121 and the end of the second fixing section 2123 that are closer to the base 220. Upon elastic deformation, the corresponding elastic portion 211 generates a restoring torque that applies an elastic restoring force in the opposite direction to the movable rod 300, thereby achieving automatic return.

[0038] Mode 2: The elastic reset structure includes an integrally formed elastic member 240 , and a through hole for passing the movable rod 300 is provided in the middle of the elastic member 240 .

[0039] See Figure 2 The elastic reset structure can also adopt the elastic member 240, i.e. a circular elastic block, and the movable rod 300 passes through the perforation in the middle of the elastic block. The elastic block can also exert an elastic restoring force in the opposite direction on the movable rod 300 after elastic deformation.

[0040] The elastic member 240 is made of an elastic material, preferably uses super glue, and can generate a larger elastic reset force to meet the use requirement.

[0041] In an optional mode of the embodiment, the ball joint structure further includes a fixed part 500 arranged opposite to the movable part 400, and the rotating assembly 100 is installed on the fixed part 500.

[0042] Please refer to Figure 1 The fixed part 500 has a lumen structure, the rotating assembly 100 is installed inside the fixed part 500, and the fixed part 500 and the movable part 400 are opposite ends of the ball joint structure. The fixed part 500 is a mounting base of the ball joint structure and always remains fixed during movement. The movable part 400 is an output end of the ball joint structure and can realize movement in any direction within a rotating range.

[0043] In an optional mode of the embodiment, the rotating assembly 100 includes a ball 110 and a ball sleeve 120, the ball sleeve 120 is installed on the fixed part 500, the ball 110 is rotatably installed inside the ball sleeve 120, and the end of the ball 110 away from the fixed part 500 is installed with the movable rod 300.

[0044] Please refer to Figure 1 The ball sleeve 120 is installed inside the fixed part 500 and plays a role of clamping the ball 110, and the ball 110 can freely rotate in the ball sleeve 120. The ball 110 is installed with the movable rod 300 in the direction of the movable part 400 and is positioned by a pin.

[0045] In an optional mode of the embodiment, the movable rod 300 and the movable part 400 are connected through a movable rod sleeve 600.

[0046] Please refer to Figure 4 The movable rod 300 is the movable main shaft of the ball joint structure, so that the movable part 400 moves in various directions with the ball 110 as the rotation center. The movable rod 300 and the movable part 400 are connected by the movable rod sleeve 600. The shell 230 in mode one is installed on the inner side of the ball sleeve 120 and is connected with the movable rod sleeve 600 through a screw.

[0047] The embodiment sets the elastic reset structure, when the movable part 400 is bent relative to the fixed part 500, the elastic reset structure can exert a force in the opposite direction on the movable rod 300 to realize the function of automatic return.

[0048] Embodiment two This embodiment provides a gardening tool having the ball joint structure of the first embodiment.

[0049] Specifically, the gardening tool may be a hair dryer, a blower-suction machine, etc., which realizes automatic resetting of the blowpipe through a ball joint structure and has a longer service life than the rubber bellows commonly used in the field.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A ball joint structure, characterized in that: include: A rotating assembly (100), a return assembly (200), a movable rod (300) and a movable part (400), wherein the movable part (400) and the return assembly (200) are connected to the rotating assembly (100) via the movable rod (300), the movable part (400) is connected to an end of the movable rod (300) away from the rotating assembly (100), the return assembly (200) is located between the rotating assembly (100) and the movable part (400), and the movable part (400) is capable of rotating around the rotation center of the rotating assembly (100); The return assembly (200) comprises an elastic return structure, which is capable of applying a reverse elastic restoring force to the movable rod (300) when the movable part (400) rotates, so as to automatically return the movable part (400).

2. The ball joint structure according to claim 1, characterized in that: The elastic reset structure includes a plurality of torsion springs (210), and the return assembly (200) further includes a base (220) and a shell (230), wherein the base (220) is sleeved on the outside of the movable rod (300), and the shell (230) is installed on the rotating assembly (100), and the torsion springs (210) and the base (220) are both arranged in the shell (230), and the plurality of torsion springs (210) are evenly distributed along the circumference of the base (220).

3. The ball joint structure according to claim 2, characterized in that: The torsion spring (210) comprises an elastic portion (211) and a connecting portion (212), one end of the connecting portion (212) is fixedly connected to the base (220), and the other end extends outward to the inner wall of the housing (230), and the elastic portion (211) is wound around the connecting portion (212).

4. The ball joint structure according to claim 3, characterized in that: The connecting portion (212) comprises a first fixing section (2121), a bending section (2122) and a second fixing section (2123) connected in a U-shape, the first fixing section (2121) and the second fixing section (2123) being symmetrically arranged, the two ends of the bending section (2122) being respectively connected to the first fixing section (2121) and the second fixing section (2123), and the first fixing section (2121) and the second fixing section (2123) are each provided with one of the elastic portions (211).

5. The ball joint structure according to claim 1, characterized in that: The elastic reset structure comprises an integrally formed elastic member (240), and a through hole for passing the movable rod (300) is provided in the middle of the elastic member (240).

6. The ball joint structure according to claim 5, characterized in that: The elastic member (240) is made of elastic material.

7. The ball joint structure according to any one of claims 1 to 6, characterized in that: The ball joint structure further comprises a fixed portion (500) arranged opposite to the movable portion (400), and the rotating assembly (100) is mounted on the fixed portion (500).

8. The ball joint structure according to claim 7, characterized in that: The rotating assembly (100) comprises a sphere (110) and a ball sleeve (120), wherein the ball sleeve (120) is mounted on the fixed portion (500), the sphere (110) is rotatably mounted inside the ball sleeve (120), and the movable rod (300) is mounted on one end of the sphere (110) away from the fixed portion (500).

9. The ball joint structure according to claim 8, characterized in that: The movable rod (300) and the movable portion (400) are connected via a movable rod sleeve (600).

10. A garden tool, characterized in that: The invention comprises a ball joint structure according to any one of claims 1 to 9.

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