Ball joint structure and garden tool

Abstract

The utility model relates to the technical field of ball joint device, especially to a ball joint structure and garden tool. Ball joint structure includes: rotating component, return subassembly, movable rod and activity department, activity department, return subassembly all are connected with rotating component through movable rod, and activity department is connected in movable rod far from rotating component one end, and return subassembly is located between rotating component and activity department, and activity department can rotate around rotating center of rotating component, return subassembly includes elastic reset structure, and elastic reset structure can exert reverse elastic restoring force to movable rod when activity department rotates, so as to make activity department automatic return. The ball joint structure provided by the utility model not only retains the flexible turning characteristic of the original ball joint, but also realizes the self-return function.

Description

Technical Field

[0001] This utility model relates to the field of ball joint device technology, and in particular to a ball joint structure and garden tool. Background Technology

[0002] Ball joints, as a common mechanical connection structure, are widely used in various mechanisms requiring multi-degree-of-freedom motion. Typically composed of a ball joint and a ball socket, ball joints offer good rotational flexibility, enabling deflection movements in multiple directions. However, in practical applications, ball joints often fail to automatically return to their initial position after completing a deflection motion, thus compromising system stability and repeatability. Utility Model Content

[0003] The purpose of this invention is to provide a ball joint structure and garden tool to alleviate the problem in the prior art that the ball joint usually cannot automatically return to its initial position after completing the deflection action, thus failing to effectively guarantee the stability and repeatability of the system.

[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: In a first aspect, the present invention provides a ball joint structure, comprising: a rotating component, a returning component, a movable rod, and a movable part. The movable part and the returning component are both connected to the rotating component via the movable rod. The movable part is connected to the end of the movable rod away from the rotating component. The returning component is located between the rotating component and the movable part. The movable part is capable of rotating around the rotation center of the rotating component. 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.

[0005] Furthermore, the elastic reset structure includes multiple torsion springs, and the return assembly also includes a base and a housing. The base is sleeved on the outside of the movable rod, and the housing is installed on the rotating assembly. Both the torsion springs and the base are disposed inside the housing, and the multiple torsion springs are evenly distributed along the circumference of the base.

[0006] Furthermore, the torsion spring includes an elastic part and a connecting part. One end of the connecting part is fixedly connected to the base, and the other end extends outward to the inner wall of the housing. The elastic part is wound around the connecting part.

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

[0008] Furthermore, the elastic reset structure includes an integrally formed elastic element, and the elastic element has a through hole in the middle for the movable rod to pass through.

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

[0010] Furthermore, the ball joint structure also includes a fixed part disposed opposite to the movable part, and the rotating component is mounted on the fixed part.

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

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

[0013] Secondly, this utility model provides a garden tool, including the ball joint structure described in the first aspect.

[0014] This utility model brings at least the following beneficial effects: This utility model provides a ball joint structure, including: a rotating assembly, a returning assembly, a movable rod, and a movable part. The movable part and the returning assembly are both connected to the rotating assembly via the movable rod. The movable part is connected to the end of the movable rod away from the rotating assembly. The returning assembly is located between the rotating assembly and the movable part. The movable part can rotate around the rotation center of the rotating assembly. The returning 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 serves as the main axis of the ball joint structure, enabling the movable part to move in all directions around the rotating component. The movable part, the output end of the ball joint structure, can move in any direction within its rotational range. The ball joint structure adds a return component to the traditional ball joint design. Through the restoring torque generated by its elastic deformation, the movable part automatically returns to its initial position. When the movable part rotates, the elastic reset structure applies a counter-elastic restoring force to the movable rod, thus achieving automatic return. This design not only retains the original flexible steering characteristics of the ball joint but also achieves autonomous return, demonstrating promising engineering application prospects. Furthermore, the return component is mounted on the movable rod, and its modular design facilitates disassembly and replacement.

[0016] When the ball joint structure of this application is applied to garden tools, such as backpack blowers, the blowpipe can be automatically reset through the return component, which has a longer service life than the rubber corrugated pipes commonly used in the industry.

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 Explosion of the ball joint structure provided in the embodiment of this utility model Figure 1 ; Figure 2 Explosion of the ball joint structure provided in the embodiment of this utility model Figure 2 ; Figure 3 A schematic diagram of the structure of a return component provided in an embodiment of this utility model; Figure 4 A cross-sectional view of the ball joint structure provided in an embodiment of this utility model.

[0020] icon: 100-Rotating 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-Outer shell; 240-Elastic element; 300-Moving rod; 400-Moving part; 500-Fixed part; 600-Moving rod sleeve. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Physical quantities in formulas, unless otherwise specified, should be understood as basic quantities of the International System of Units (SI) base 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 "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0027] Example 1 Ball joints typically consist of a ball head and a ball socket, offering excellent rotational flexibility and enabling deflection movements in multiple directions. However, in practical applications, ball joints often fail to automatically return to their initial position after completing a deflection motion, thus compromising system stability and repeatability.

[0028] In view of this, the present invention provides a ball joint structure, including: a rotating assembly 100, a return assembly 200, a movable rod 300, and a movable part 400. The movable part 400 and the return assembly 200 are both connected to the rotating assembly 100 through the movable rod 300. The movable part 400 is connected to the 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. The movable part 400 can rotate around the rotation center of the rotating assembly 100. The return assembly 200 includes an elastic reset structure. The elastic reset structure 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 serves as the main axis of the ball joint structure, enabling the movable part 400 to move in all directions around the rotating component 100. The movable part 400 is the output end of the ball joint structure and can move in any direction within its rotation range. The ball joint structure adds a return component 200 to the traditional ball joint, which, through its elastic deformation, generates a restoring torque to drive the movable part 400 to automatically return to its initial position. When the movable part 400 rotates, the elastic reset structure applies a counter-elastic restoring force to the movable rod 300, thus achieving automatic return. This design not only retains the original flexible steering characteristics of the ball joint but also achieves autonomous return, showing promising prospects for engineering applications. Furthermore, the return component 200 is mounted on the movable rod 300, and its modular design facilitates disassembly and replacement.

[0030] When the ball joint structure of this application is applied to garden tools, such as backpack blowers, the blowpipe can be automatically reset by the return component 200, which has a longer service life than the rubber corrugated pipes commonly used in the industry.

[0031] This embodiment provides two different ways to configure the elastic reset structure.

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

[0033] Please see details. Figure 1 , Figure 3 and Figure 4 The outer casing 230 is entirely installed inside the rotating assembly 100. The torsion spring 210 and the base 220 are both installed inside the outer casing 230, with the base 220 fitted onto the movable rod 300. In this embodiment, four torsion springs 210 are evenly distributed along the circumference of the base 220, i.e., one torsion spring 210 is provided every 90°, thereby enabling the application of an elastic restoring force in any direction to the movable rod 300. Furthermore, more torsion springs 210 can be provided along the circumference of the base 220, as long as it covers a 360° circumferential range. When the movable part 400 rotates under the action of the movable rod 300, the torsion springs 210 can apply a reverse elastic restoring force to the movable rod 300, thereby causing the movable part 400 to automatically return to its original position.

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

[0035] Please see Figure 3 For each torsion spring 210, the connecting part 212 serves to fix and support, and the elastic part 211 is wound around the connecting part 212, serving to elastically reset. Two adjacent connecting parts 212 are perpendicular to each other, and each connecting part 212 has an elastic part 211 on both sides, which facilitates the application of elastic force to the movable rod 300.

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

[0037] Please see Figure 3 One end of the first fixed segment 2121 and the second fixed segment 2123 are fixed to the base 220, and the other ends are fixedly connected to both ends of the bent segment 2122, respectively. An elastic part 211 is wound around the end of the first fixed segment 2121 near the base 220 and the end of the second fixed segment 2123 near the base 220. After the corresponding elastic part 211 undergoes elastic deformation, it generates a restoring torque, which can apply an elastic restoring force in the opposite direction to the movable rod 300, thereby realizing automatic return.

[0038] Method 2: The elastic reset structure includes an integrally formed elastic element 240, and the elastic element 240 has a through hole in the middle for the movable rod 300 to pass through.

[0039] Please see Figure 2 Alternatively, the elastic reset structure can employ an elastic element 240, i.e., a circular elastic block, with the movable rod 300 passing through a perforation in the center of the elastic block. After elastic deformation, the elastic block can also apply an elastic restoring force in the opposite direction to the movable rod 300.

[0040] Among them, the elastic element 240 is made of elastic material, preferably urethane, which can generate a large elastic restoring force to meet the usage requirements.

[0041] In an optional embodiment, the ball joint structure further includes a fixed part 500 disposed opposite to the movable part 400, and the rotating component 100 is mounted on the fixed part 500.

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

[0043] In an optional 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, and the ball 110 is rotatably installed inside the ball sleeve 120. A movable rod 300 is installed on the end of the ball 110 away from the fixed part 500.

[0044] Please see Figure 1 The ball sleeve 120 is installed inside the fixed part 500 and serves to hold the ball 110, allowing the ball 110 to rotate freely within the ball sleeve 120. A movable rod 300 is installed on the ball 110 facing the movable part 400 and is positioned by a pin.

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

[0046] Please see Figure 4 The movable rod 300 serves as the main axis of the ball joint structure, allowing the movable part 400 to move in all directions around the ball 110 as its rotation center. The movable rod 300 and the movable part 400 are connected by a movable rod sleeve 600. In Method 1, the outer casing 230 is installed inside the ball sleeve 120 and is connected to the movable rod sleeve 600 by screws.

[0047] In this embodiment, by setting an elastic reset structure, when the movable part 400 bends relative to the fixed part 500, the elastic reset structure can apply a force in the opposite direction to the movable rod 300, thereby realizing the function of automatic return.

[0048] Example 2 This embodiment provides a garden tool that has the ball joint structure of Embodiment 1.

[0049] Specifically, garden tools such as hair dryers and blow dryers can achieve automatic repositioning of the blowpipe through a ball joint structure, which has a longer service life compared to the rubber corrugated pipes commonly used in the field.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A ball joint structure, characterized in that, include: The assembly comprises 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) via 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). The movable part (400) is capable of rotating around the rotation center of the rotating component (100). The return assembly (200) includes an elastic reset structure that 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.

2. The ball joint structure according to claim 1, characterized in that, The elastic reset structure includes multiple torsion springs (210), and the return assembly (200) also includes a base (220) and a housing (230). The base (220) is sleeved on the outside of the movable rod (300), and the housing (230) is installed on the rotating assembly (100). The torsion springs (210) and the base (220) are both disposed inside the housing (230), and the multiple 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) includes an elastic part (211) and a connecting part (212). One end of the connecting part (212) is fixedly connected to the base (220), and the other end extends outward to the inner wall of the outer shell (230). The elastic part (211) is wound around the connecting part (212).

4. The ball joint structure according to claim 3, characterized in that, The connecting part (212) includes a first fixed section (2121), a bent section (2122), and a second fixed section (2123) connected in a U-shape. The first fixed section (2121) and the second fixed section (2123) are symmetrically arranged. The two ends of the bent section (2122) are respectively connected to the first fixed section (2121) and the second fixed section (2123). Each of the first fixed section (2121) and the second fixed section (2123) is provided with an elastic part (211).

5. The ball joint structure according to claim 1, characterized in that, The elastic reset structure includes an integrally formed elastic element (240), and the elastic element (240) has a through hole in the middle for the movable rod (300) to pass through.

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

7. The ball joint structure according to any one of claims 1-6, characterized in that, The ball joint structure also includes a fixed part (500) disposed opposite to the movable part (400), and the rotating component (100) is mounted on the fixed part (500).

8. The ball joint structure according to claim 7, characterized in that, 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). The movable rod (300) is installed at one end of the ball (110) away from the fixed part (500).

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

10. A garden tool, characterized in that, Includes the ball joint structure as described in any one of claims 1-9.

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