A connecting fastener and a fan having the connecting fastener

Abstract

This utility model relates to a connecting fastener and a fan having the connecting fastener. The connecting fastener includes a rotating component and a movable component. The movable component has a rotating positioning groove for the rotating component to rotate and a slot for the rotating component to move radially into the rotating positioning groove. The rotating component has a coaxially arranged annular protrusion, and the side wall of the rotating positioning groove has a limiting member to prevent the annular protrusion from moving axially out. The bottom surface of the rotating positioning groove and the first end face of the rotating component respectively form two mounting surfaces. One of the two mounting surfaces has a first positioning steel ball coaxially arranged, and the other has a first positioning groove for positioning the first positioning steel ball. The connecting fastener also includes a second positioning steel ball eccentrically arranged on either of the two mounting surfaces. This utility model has a simple overall structure, is easy to disassemble and install, and through the cooperation of the positioning steel ball and the positioning groove, it can reduce the wear between parts while maintaining the rotational resistance between the rotating component and the movable component for a longer period of time.

Description

Technical Field

[0001] This utility model relates to the field of connecting buckle structure technology, and in particular to a connecting fastener and a fan having the connecting fastener. Background Technology

[0002] In hot, sunny weather, sun umbrellas serve to block sunlight and ultraviolet rays. However, ordinary sun umbrellas lack temperature regulation, resulting in a poor user experience for those walking outdoors. Therefore, to improve the user experience, technology has emerged that integrates fans into sun umbrellas, allowing users to cool down while using the umbrella. However, some existing fans are directly integrated into the frame at the top of the sun umbrella. While this solves the problem of stuffiness, it also means the fan cannot be detached from the umbrella for separate use.

[0003] In addition, some additional fans are connected to the sunshade using a detachable structure. For example, a detachable clip holds the fan to the umbrella handle (the clip and fan are separate), and the airflow can be directed to the user's face by adjusting the rotation angle of the clip and fan. However, while this type of fan solves the problem of separating the fan from the sunshade, the rotation structure of the clip and fan body usually relies solely on damping friction created by the tight fit to position the fixed and movable ends. This can lead to insufficient frictional resistance for positioning after prolonged and repeated use, resulting in the fan being unable to adjust the blowing angle. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of the existing technology by providing a connecting fastener and a fan having the connecting fastener, which can effectively solve the above-mentioned problems.

[0005] To achieve the above requirements, the technical solution adopted by this utility model to solve its technical problem is as follows:

[0006] A connecting fastener is provided, comprising a rotating component and a movable component; the movable component is provided with a rotary positioning groove for the rotating component to be inserted and rotated, and a slot for the rotating component to be radially moved into the rotary positioning groove; an annular protrusion is coaxially provided on the side wall of the rotating component, and a limiting member is provided on the side wall of the rotary positioning groove to prevent the annular protrusion from axially moving out;

[0007] The bottom surface of the rotary positioning groove and the first end face of the rotating body component respectively form two mounting surfaces. One of the two mounting surfaces is coaxially provided with a first positioning steel ball, and the other is provided with a first positioning groove for positioning the first positioning steel ball.

[0008] The connecting fastener also includes a second positioning steel ball eccentrically disposed on either of the two mounting surfaces.

[0009] The connecting fastener of this utility model further includes two elastic members that abut against the first positioning steel ball and the second positioning steel ball on their opposite sides of the mounting surface; when assembled in place, the annular protrusion abuts against the limiting member through the elastic force provided by the elastic members.

[0010] The connecting fastener of this utility model has the first positioning steel ball and the second positioning steel ball both disposed on the bottom surface of the rotating positioning groove, the first end face is provided with the first positioning groove and the second positioning groove for positioning the second positioning steel ball; the second positioning groove is provided in multiples and arranged in a ring outside the first positioning groove.

[0011] In the connecting fastener of this utility model, the center distance between any two adjacent second positioning grooves is less than the sum of their diameters.

[0012] In the connecting fastener described in this utility model, the bottom surfaces of both the first positioning groove and the second positioning groove are circular.

[0013] The connecting fastener of this utility model has an installation groove on the bottom surface of the rotating positioning groove for installing the first positioning steel ball and the second positioning steel ball. The two elastic members are respectively disposed in the two installation grooves. The opening diameter of the two installation grooves is smaller than the diameter of the first positioning steel ball and the second positioning steel ball. When assembled in place, the two elastic members respectively push the first positioning steel ball and the second positioning steel ball out of the two installation grooves.

[0014] The connecting fastener of this utility model has a rotating positioning groove and a slot that are directly connected and together form a rectangular groove structure, both ends of which are arc-shaped; the sidewall of the rotating positioning groove is provided with a circumferential rib, which forms the limiting member; both ends of the limiting member have an extension portion extending toward the slot.

[0015] The connecting fastener of this utility model has an axially penetrating notch on the inner side wall of the limiting member corresponding to the rotating positioning groove, and the notch is provided in multiple and equally spaced.

[0016] The connecting fastener of this utility model has a through hole on the bottom surface of the rotating positioning groove. The through hole is U-shaped and its opening faces the slot. The first positioning steel ball and the second positioning steel ball are both located between the two arms of the through hole.

[0017] The connecting fastener of this utility model has a connecting rib in the through hole that connects to its inner and outer side walls. There are multiple connecting ribs, all of which are located on the side away from the slot.

[0018] In addition, the present invention also provides a fan, including the above-mentioned connecting fastener, and further including a fan body and a clamp plate disposed on the side of the movable member opposite to the rotating member; the rotating member is disposed on the outer side wall of the fan body, and the clamp plate is hinged to the movable member and a torsion spring is provided on the axis of rotation of the two to form an openable and closable clamp structure.

[0019] In the fan described in this utility model, the rotating component is cylindrical and is detachably connected to the fan body.

[0020] The fan of this utility model has a plurality of connecting grooves on the second end face of the rotating body component away from the annular protrusion, and a plurality of positioning pins corresponding to the plurality of connecting grooves on the fan body; a connecting hole coaxial with any of the positioning pins is provided through the first end face.

[0021] The fan of this utility model has an annular rib on its body surrounding a plurality of positioning pins, and a plug groove on its second end face for inserting the annular rib.

[0022] The beneficial effects of this utility model are as follows:

[0023] This utility model has a simple overall structure and is easy to disassemble and install. In specific use, the rotating component is slid from the slot into the rotating positioning groove, and the axial dislodgement is prevented by the cooperation of the annular protrusion and the limiting member, and it can rotate in the rotating positioning groove. During the rotation of the rotating component, the wear between the first end face of the rotating component and the bottom surface of the rotating positioning groove can be reduced by the cooperation of the first steel ball and the first positioning groove, and the second positioning steel ball for auxiliary positioning, so that the rotational resistance of the rotating component and the moving component can be maintained for a longer period of time. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is an overall structural diagram of Embodiment 1 of this utility model.

[0026] Figure 2 This is a structural diagram of the first end of the rotating component of this utility model.

[0027] Figure 3 yes Figure 2 Another perspective view.

[0028] Figure 4 This is a structural diagram of the fan body according to Embodiment 2 of this utility model.

[0029] Figure 5 This is an overall structural diagram of Embodiment 2 of this utility model.

[0030] Figure 6 yes Figure 5 AA sectional view.

[0031] Figure 7 yes Figure 6 Enlarged view of a local structure. Detailed Implementation

[0032] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0033] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0034] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0035] Furthermore, the terms indicating orientation, such as "up," "down," "left," "right," "upper end," "lower end," and "longitudinal," are all based on the posture and position of the device or equipment described in this solution during normal use.

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of this utility model. Obviously, the described embodiments are some, but not all, 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 protection scope of this utility model.

[0037] Example 1

[0038] The connecting fastener of the preferred embodiment of this utility model, such as Figure 1-7 As shown, the connecting fastener includes a rotating component 10 and a movable component 20 (both are generally made of plastic injection molding). One is used to connect to the base shell of the equipment, and the other is used to connect to structures such as clamps or fixing sleeves. The rotating component 10 can be a cylindrical, truncated cone, inverted truncated cone, or a coaxial combination of a cylinder and a truncated cone. Preferably, this embodiment uses a cylindrical structure. The movable component 20 is provided with a rotating positioning groove 21 for the rotating component 10 to be inserted and rotated, so that the user can adjust the angle of the movable structure such as the clamp or fixing sleeve by rotating the rotating component 10. The movable component 20 can be a plate or a column / block structure with a sufficiently large plane for the rotating positioning groove 21. In this embodiment, the movable component 20 is specifically a rectangular plate structure, which can be used as a vertical component of the hook or as a movable component of the clamp. In practice, we choose the latter.

[0039] Furthermore, the movable component 20 is also provided with a slot 22 for the rotating component 10 to move radially into the rotary positioning groove 21; the side wall of the rotating component 10 is coaxially provided with an annular protrusion 11, and the side wall of the rotary positioning groove 21 is provided with a limiting member 23 to prevent the annular protrusion 11 from moving axially out; in use, the first end of the rotating component 10 (the end of the rotating component 10 that is close to the rotary positioning groove 21) is inserted into the slot 22 and moves radially into the rotary positioning groove 21, and is blocked by the limiting member 23 on the side of the annular protrusion 11 away from the bottom surface of the rotary positioning groove 21, thereby limiting the rotating component 10 in the rotary positioning groove 21 and allowing it to rotate on a fixed axis without axially disengaging from the rotary positioning groove 21.

[0040] Furthermore, the bottom surface of the rotary positioning groove 21 and the first end face of the rotating body component 10 respectively form two mounting surfaces. One of the mounting surfaces is coaxially provided with a first positioning steel ball 30, and the other is provided with a first positioning groove 40 for positioning the first positioning steel ball 30. Specifically, the first positioning steel ball 30 is semi-embedded on the mounting surface. When installed in place, less than half of the side wall of the first positioning steel ball 30 protrudes from the mounting surface, so that after the rotating body component 10 is assembled in the rotary positioning groove 21, the first positioning steel ball 30 coaxially abuts against the bottom surface of the rotating body component 10 and the rotary positioning groove 21, thereby creating a certain gap between the two to prevent continuous wear during relative rotation.

[0041] Furthermore, the connecting fastener also includes a second positioning steel ball 50 eccentrically disposed on either of the two mounting surfaces. The first positioning steel ball 30 and the second positioning steel ball 50 have the same diameter. By setting the eccentric second positioning steel ball 50, the coaxiality of the rotating component 10 on the bottom surface of the rotating positioning groove 21 can be effectively prevented from being skewed, ensuring that the annular protrusion 11 on the rotating component 10 is in uniform contact with the adjacent end face of the limiting member 23 everywhere, and avoiding excessive wear caused by pressure concentration in local positions.

[0042] This utility model has a simple overall structure and is easy to disassemble and install. In specific use, the rotating component 10 is slid from the slot 22 into the rotating positioning groove 21, and is prevented from axially falling off by the cooperation of the annular protrusion 11 and the limiting member 23, and can rotate in the rotating positioning groove 21. During the rotation of the rotating component 10, the first steel ball and the first positioning groove 40 cooperate, and the second positioning steel ball 50 assists in positioning, which can reduce the wear between the first end face of the rotating component and the bottom surface of the rotating positioning groove 21, so that the rotational resistance between the rotating component 10 and the movable component 20 can be maintained for a longer period of time.

[0043] In this embodiment, the connecting fastener also includes two elastic elements 60 that abut against the first positioning steel ball 30 and the second positioning steel ball 50 on their opposite mounting surfaces. When assembled, the annular protrusion 11 abuts against the limiting member 23 through the elastic force provided by the elastic element 60. The elastic element 60 can be an elastic pad, a spring, or a metal sheet, etc., and preferably, we choose a spring. By setting the double elastic elements 60, a certain axial displacement space can be provided for the relative rotation of the rotating component 10 and the movable component 20, which plays a role in reducing stress. At the same time, it can also provide a certain clamping force for the abutting cooperation between the annular protrusion 11 and the limiting member 23, ensuring that the movable component 20 and the rotating component 10 still have sufficient rotational resistance to position their rotation angles even after long-term use.

[0044] In this embodiment, the first positioning steel ball 30 and the second positioning steel ball 50 are both disposed on the bottom surface of the rotating positioning groove 21. The first end face is provided with a first positioning groove 40 and a second positioning groove 70 for positioning the second positioning steel ball 50. Multiple second positioning grooves 70 are provided and arranged in a ring outside the first positioning groove 40. Thus, when the second positioning steel ball 50 rotates relative to the moving member 20 and the rotating member 10, the elastic restoring force provided by the elastic member 60 can move from the first second positioning groove to the next second positioning groove 70 and make a pleasant clicking sound. It can also assist in positioning the relative position of the moving member 20 and the rotating member 10.

[0045] In this embodiment, the center distance between any two adjacent second positioning grooves 70 is less than the sum of their diameters, so as to increase the density of the second positioning grooves 70 while reducing the axial displacement of the second positioning steel ball 50.

[0046] In this embodiment, the bottom surfaces of the first positioning groove 40 and the second positioning groove 70 are both circular surfaces and their diameters are smaller than the radius of the first positioning steel ball 30.

[0047] In this embodiment, the bottom surface of the rotary positioning groove 21 is provided with an installation groove 80 for installing the first positioning steel ball 30 and the second positioning steel ball 50. Two elastic members 60 are respectively provided in the two installation grooves 80. The opening diameter of the two installation grooves 80 is smaller than the diameter of the first positioning steel ball 30 and the second positioning steel ball 50. When assembled, the two elastic members 60 respectively push the first positioning steel ball 30 and the second positioning steel ball 50 out of the two installation grooves 80, so that a gap is formed between the first end face of the rotating body component 10 and the bottom surface of the rotary positioning groove 21. At the same time, it is also convenient to assemble the first steel ball and the second steel ball with the movable component 20 to form an integral structure for synchronous assembly, so as to avoid the first steel ball and the second steel ball falling off due to the separation of the rotating body component 10. In practice, the installation groove 80 is formed by the inner cavity of a metal cylinder structure 200 embedded in the bottom surface of the rotary positioning groove 21. The elastic members 60 and their corresponding positioning steel balls are both provided in the metal cylinder structure. The purpose is to avoid the positioning steel balls directly causing wear and compression to the movable component.

[0048] In this embodiment, the rotary positioning groove 21 and the slot 22 are directly connected and together form a rectangular groove structure, with both ends of the groove structure being arc-shaped. The side wall of the rotary positioning groove 21 is provided with a circumferential rib, which forms the aforementioned limiting member 23. Both ends of the limiting member 23 have extensions extending toward the slot 22 to form a U-shaped structure. The extensions can guide and limit the process of the annular protrusion 11 sliding radially into the rotary positioning groove 21.

[0049] In this embodiment, the inner sidewall of the limiting member 23 is provided with an axially penetrating notch 231 corresponding to the rotation positioning groove 21. There are multiple notches 231 arranged at equal intervals. Specifically, there are three notches 231, all located at positions directly opposite to the rotation positioning groove 21 in the axial direction. The purpose of setting the notches 231 is to increase the elastic deformation capacity of each part of the limiting member 23 in the axial direction of the rotation positioning groove 21, so as to avoid stress concentration leading to local cracking.

[0050] In this embodiment, a through hole 210 is provided through the bottom edge of the rotary positioning groove 21. The through hole 210 is specifically aligned with the side wall of the rotary positioning groove 21. The through hole 210 is U-shaped and its opening faces the slot 22. The first positioning steel ball 30 and the second positioning steel ball 50 are both located between the two arms of the through hole 210. By setting the U-shaped through hole 210, the bottom surface of the rotary positioning groove 21 forms a suspended elastic component, so as to further strengthen the mating force between the annular protrusion 11 and the limiting member 23 and the mating force between the first / second positioning steel ball 50 and the rotating body component 10 by utilizing its elasticity, so as to ensure that the rotating body component 10 and the movable component 20 still have good damping positioning function during long-term repeated rotation.

[0051] In this embodiment, the through hole 210 is provided with connecting ribs 90 that connect its inner and outer walls. There are multiple connecting ribs 90, all located on the side away from the slot 22, in order to avoid cracking or breaking at the root of the elastic component. At the same time, the connecting ribs 90 (integrated injection molded with the movable component 20) also have a certain elasticity, which not only strengthens the connection, but also further increases the elasticity of the elastic component.

[0052] Example 2

[0053] This embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The difference is that a fan is provided, such as... Figure 3-7 As shown, the fan includes the connecting fastener of Embodiment 1, as well as the fan body 100 (and the aforementioned base shell) and the clamping plate 110 disposed on the side of the movable member 20 away from the rotating member 10; the second end of the rotating member 10 (the end away from the rotation positioning groove 21) is disposed on the outer side wall of the fan body 100, the clamping plate 110 is hinged to the movable member 20 and a torsion spring (not shown) is provided on the rotating shaft 120 of the two to form an openable and closable clamping structure, so that the user can clamp the fan body 100 on the frame or handle of the parasol, and the clamp can also be separated from the fan body 100, which can better meet the user's independent use needs of the fan.

[0054] In this embodiment, the rotating component 10 is cylindrical and detachably connected to the fan body 100. Specifically, the second end face of the rotating component 10 away from the annular protrusion 11 is provided with multiple connecting grooves 140, specifically three. To reduce material usage, the connecting grooves 140 are implemented using an integrally injection-molded cylindrical component. This design allows the cylindrical component to be hollowed out on all sides, resulting in a larger annular dam structure 150 on the outside of the multiple cylindrical components. This annular dam structure 150 is achieved through the rotating component 10... The edges of the second end face are coaxial and flush with each other, integrally injection molded; furthermore, the fan body 100 is provided with multiple positioning pins 160 corresponding to multiple connecting slots 140, and the positioning pins 160 can be inserted into the connecting slots 140 by interference fit, thereby achieving preliminary positioning and connection; furthermore, a connecting hole 170 coaxial with any positioning pin 160 is provided axially through the first end face (the end face facing the rotating positioning slot 21) of the rotating body component 10, for use to use screws to axially connect the rotating body component 10 with one of its positioning pins 160.

[0055] In this embodiment, the fan body 100 is provided with annular protrusions 180 surrounding multiple positioning pins 160, and a plug groove 190 for inserting the annular protrusions 180 is provided on the second end face. The plug groove 190 is directly formed by the inner cavity of the annular dam structure 150. After being assembled in place, the outer wall of the annular protrusions 180 abuts against the inner wall of the annular dam structure 150 to play a positioning role.

[0056] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A connecting fastener, characterized in that, The connecting fastener includes a rotating component and a movable component; the movable component is provided with a rotary positioning groove for the rotating component to be inserted and rotated, and also with a slot for the rotating component to be radially moved into the rotary positioning groove; the side wall of the rotating component is provided with an annular protrusion coaxially, and the side wall of the rotary positioning groove is provided with a limiting member to prevent the annular protrusion from axially moving out. The bottom surface of the rotary positioning groove and the first end face of the rotating body component respectively form two mounting surfaces. One of the two mounting surfaces is coaxially provided with a first positioning steel ball, and the other is provided with a first positioning groove for positioning the first positioning steel ball. The connecting fastener also includes a second positioning steel ball eccentrically disposed on either of the two mounting surfaces.

2. The connecting fastener according to claim 1, characterized in that, The connecting fastener also includes two elastic elements that abut against the first positioning steel ball and the second positioning steel ball on their opposite sides of the mounting surface; when assembled, the annular protrusion abuts against the limiting element through the elastic force provided by the elastic elements.

3. The connecting fastener according to claim 2, characterized in that, Both the first positioning steel ball and the second positioning steel ball are disposed on the bottom surface of the rotating positioning groove. The first end face is provided with the first positioning groove and the second positioning groove for positioning the second positioning steel ball. Multiple second positioning grooves are provided and arranged in a ring outside the first positioning groove.

4. The connecting fastener according to claim 3, characterized in that, The distance between the centers of any two adjacent second positioning grooves is less than the sum of their diameters.

5. The connecting fastener according to claim 4, characterized in that, The bottom surfaces of both the first positioning groove and the second positioning groove are circular.

6. The connecting fastener according to claim 3, characterized in that, The bottom surface of the rotary positioning groove is provided with an installation groove for installing the first positioning steel ball and the second positioning steel ball. The two elastic elements are respectively disposed in the two installation grooves. The opening diameter of the two installation grooves is smaller than the diameter of the first positioning steel ball and the second positioning steel ball. When assembled in place, the two elastic elements respectively push the first positioning steel ball and the second positioning steel ball out of the two installation grooves.

7. The connecting fastener according to claim 1, characterized in that, The rotary positioning groove and the slot are directly connected and together form a rectangular groove structure, both ends of which are arc-shaped; the sidewall of the rotary positioning groove is provided with circumferential ribs, which form the limiting member; both ends of the limiting member have extensions extending toward the slot.

8. The connecting fastener according to claim 7, characterized in that, The inner sidewall of the limiting member has an axially penetrating notch corresponding to the rotary positioning groove, and there are multiple notches arranged at equal intervals.

9. The connecting fastener according to claim 1, characterized in that, A through hole is provided on the bottom surface of the rotating positioning groove. The through hole is U-shaped and its opening faces the slot. The first positioning steel ball and the second positioning steel ball are both located between the two arms of the through hole.

10. The connecting fastener according to claim 9, characterized in that, The through hole is provided with connecting ribs that connect its inner and outer side walls. There are multiple connecting ribs, all of which are located on the side away from the slot.

11. A fan, characterized in that, The device includes the connecting fastener as described in any one of claims 1-10, and further includes a fan body and a clamping plate disposed on the side of the movable member opposite to the rotating member; the rotating member is disposed on the outer side wall of the fan body, and the clamping plate is hinged to the movable member and a torsion spring is provided on the axis of rotation of both to form an openable and closable clamping structure.

12. The fan according to claim 11, characterized in that, The rotating component is cylindrical and is detachably connected to the fan body.

13. The fan according to claim 12, characterized in that, The rotating component has multiple connecting grooves on its second end face away from the annular protrusion, and the fan body has multiple positioning pins corresponding to the multiple connecting grooves; the first end face has a connecting hole that is coaxial with any of the positioning pins.

14. The fan according to claim 13, characterized in that, The fan body is provided with annular ribs surrounding the plurality of positioning pins, and the second end face is provided with a plug groove for inserting the annular ribs.

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