Extension rod device

Abstract

An extension rod device is characterized by comprising a rod body, a first male buckle and a first female buckle, the first end of the rod body is connected with the first male buckle, and the second end of the rod body is connected with the first female buckle; the structures of the first male buckle and the first female buckle can be matched with each other to realize locking and can be separated from each other; the first male buckle and the first female buckle can be connected between buckles which can be locked together and separated from each other in an extensible mode so as to adjust the using positions of the buckles. In addition, due to the design that the first male buckle and the first female buckle are rotationally connected with the rod body and the using direction can be adjusted, a user can easily adjust the angle and the direction of an existing buckle. According to the extension rod device, through the double advantages of extension of the connecting distance and flexible adjustment of the angle, the use of the buckle better meets diversified requirements, and the practical value and the application range of an existing buckle are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of fasteners, and more particularly to an extension rod device. Background Technology

[0002] In daily life, fasteners, as basic components for connecting various portable items, have long been deeply integrated into our usage scenarios. Taking baby travel as an example, many strollers and portable fans are designed to be quickly connected using a pair of structurally fixed fasteners—a slot is provided on the side of the stroller, the fan base is embedded in a matching buckle, and assembly or disassembly can be completed by lightly pressing or flicking the unlocking device. While this design greatly improves portability, it also has limitations: once fastened in place, the relative positions of the two items are strictly locked, making it impossible to adjust the vertical height difference between the fan and the stroller armrest, seat, or sunshade according to actual needs, and also making it difficult to change the tilt angle of the fan outlet to adapt to different light directions or ergonomic requirements.

[0003] Similar functional contradictions are prevalent in other scenarios. For example, when parents are pushing a stroller, if they want the fan to be closer to the baby's head to enhance the cooling effect, or if they need to adjust the fan's suspension height accordingly due to changes in the stroller's height (such as adjusting the seat position), existing fasteners cannot meet these needs. Or, when cycling outdoors, while the fasteners connecting phone holders to handlebars can securely hold the device, they are difficult to adjust the holder's tilt according to the rider's height or the angle of view for navigation, resulting in screen glare or uncomfortable viewing. Furthermore, combinations of multi-functional baby carriers and insulated bags in maternity and infant products, or the connection between tent lights and tent frames in camping scenarios, often force users to accept a "usable but awkward" user experience because the fasteners cannot be adjusted to their relative positions.

[0004] Essentially, these fasteners only fulfill the basic function of "physical connection," neglecting the deeper user need for "dynamic adaptation." When we want two items to not only "connect," but also "adjust accurately" and "use smoothly," the limitations of existing designs become glaringly obvious—fixed connections act like "shackles" on the collaboration between items, restricting the expansion of usage scenarios and reducing the actual effectiveness of product functions. Summary of the Invention

[0005] The present invention aims to solve the above problems by providing an extension rod device that can extend the connection distance and position of existing fasteners and whose direction and angle are adjustable.

[0006] To address the aforementioned problems, the present invention provides an extension rod device, comprising a rod body, a first male buckle, and a first female buckle. The first end of the rod body is connected to the first male buckle, and the second end is connected to the first female buckle. The first male buckle and the first female buckle are designed to cooperate with each other to achieve locking and separation. The first male buckle and the first female buckle can be extended to be connected between fasteners that can be locked together and separated to adjust the position of the fasteners.

[0007] Furthermore, the first male buckle is rotatably connected to the rod body, thereby adjusting the direction of use of the first male buckle; the first female buckle is rotatably connected to the rod body, thereby adjusting the direction of use of the first female buckle.

[0008] Furthermore, the first end of the rod body is provided with a first ball part and a first connector, the first male buckle is provided with a first connecting part, the first connecting part is provided with a first connecting cavity that matches the first ball part, the first ball part is connected to the first connecting cavity, and the first connector is sleeved on the first connecting part and can adjust the tightness of the first ball part and the first connecting part.

[0009] Furthermore, the first connecting part has an axial notch; the outer wall of the first connecting part has threads, the inner wall of the first connecting member has threads, and the first connecting member and the first connecting part are connected together by threads.

[0010] Furthermore, the second end of the rod is provided with a second ball and a second connector, the first female buckle is provided with a second connecting part, the second connecting part is provided with a second connecting cavity that matches the second ball, the second ball is connected to the second connecting cavity, and the second connector is sleeved on the second connecting part and can adjust the tightness between the second connecting part and the second ball.

[0011] Furthermore, the second connecting part has an axial notch; the outer wall of the second connecting part has threads, the inner wall of the second connecting member has threads, and the second connecting member and the second connecting part are connected together by threads.

[0012] Furthermore, the fastener includes a second male buckle and a second female buckle, the second male buckle and the second female buckle are structurally matched and can be locked together; the first female buckle and the second male buckle are structurally matched and can be locked together; the first male buckle and the second female buckle are structurally matched and can be locked together.

[0013] Furthermore, the first male buckle is provided with a first magnetic element; the first female buckle is provided with a second magnetic element; the second male buckle is provided with a third magnetic element; and the second female buckle is provided with a fourth magnetic element. The first magnetic element and the second magnetic element attract each other in the locking direction of the first male buckle and the first female buckle; the first magnetic element and the fourth magnetic element attract each other in the locking direction of the first male buckle and the second female buckle, thereby enabling the first male buckle and the second female buckle to lock quickly; the second magnetic element and the third magnetic element attract each other in the locking direction of the first female buckle and the second male buckle, thereby enabling the first female buckle and the second male buckle to lock quickly; and the third magnetic element and the fourth magnetic element attract each other in the locking direction of the second male buckle and the second female buckle, thereby enabling the second male buckle and the second female buckle to lock quickly.

[0014] Furthermore, the first male buckle and the second male buckle are each provided with a locking tongue protruding from their surfaces. The locking tongue is provided with a locking groove. The first female buckle and the second female buckle are each provided with a locking hole, a locking element, and a releasing element. When the locking tongue is inserted into the locking hole, the locking element locks in the locking groove to achieve locking between the first male buckle and the second female buckle, or between the first female buckle and the second male buckle, or between the second male buckle and the second female buckle. When the releasing element is operated, the locking element can be withdrawn from the locking groove, and the locking tongue can be disengaged from the locking hole to achieve unlocking.

[0015] Furthermore, the first connector is provided with a first operating part protruding from the outer surface. The first operating part is used to provide a force application part for rotation operation to assist in completing the connection action when the first connector and the first connecting part are threaded together.

[0016] The beneficial contribution of this invention lies in its effective solution to the aforementioned problems. This invention breaks the shackles of fixed fastener positions by connecting and locking the first male and first female buckles at both ends of the rod with existing fasteners. It is no longer limited by the preset connection range of the original fasteners, extending the connection distance of existing fasteners and meeting the connection needs of larger spaces or longer spans. Furthermore, the design of the first male and first female buckles being rotatably connected to the rod body, allowing for adjustable usage direction, enables users to easily adjust the angle and direction of existing fasteners. The extension rod device of this invention can be extended to connect between existing fasteners. It can expand the functionality of existing fasteners without changing their structure. Through the dual advantages of extending the connection distance and flexibly adjusting the angle, it makes the use of fasteners more suitable for diverse needs, effectively improving the practical value and application range of existing fasteners. Attached Figure Description

[0017] Figure 1 : Schematic diagram of the extension rod.

[0018] Figure 2 : Schematic diagram of the extension rod structure.

[0019] Figure 3 : Schematic diagram of the first male buckle structure.

[0020] Figure 4 : Schematic diagram of the first male thread cross section.

[0021] Figure 5 : Schematic diagram of the first female buckle structure.

[0022] Figure 6 : Schematic diagram of the second connecting part.

[0023] Figure 7 : Schematic diagram of the first female buckle section.

[0024] Explanation of reference numerals in the attached drawings: rod body 10, first ball part 11, second ball part 12, first male buckle 20, locking tongue 21, locking groove 211, first connecting part 22, first connecting cavity 221, first magnetic element 23, first female buckle 30, lock hole 31, second connecting part 32, second connecting cavity 321, second magnetic element 33, locking element 34, locking part 341, unlocking element 35, fifth magnetic element 36, first connecting part 40, first operating part 41, second connecting part 50, second operating part 51. Detailed Implementation

[0025] The following embodiments are further explanations and supplements to the present invention and do not constitute any limitation on the present invention.

[0026] like Figures 1-7 As shown, an extension rod device includes a rod body 10, a first male buckle 20, and a first female buckle 30. The first end of the rod body 10 is connected to the first male buckle 20, and the second end is connected to the first female buckle 30. The first male buckle 20 and the first female buckle 30 are designed to cooperate with each other to achieve locking and locking, and can be separated from each other. The first male buckle 20 and the first female buckle 30 can be extended to connect between fasteners to adjust the position of the fasteners.

[0027] The structure of the first male buckle 20 and the first female buckle 30, which is designed to be mutually compatible for locking and mutually separable, means that their structures can be mutually compatible. Individually, the first male buckle 20 and the first female buckle 30 can be locked together and separated. However, when the first male buckle 20 and the first female buckle 30 are connected to the first end and the second end of the rod 10 respectively, they are far apart and cannot be locked together. Other female buckles with a structure basically the same as the first female buckle 30 can be directly locked to the first male buckle 20. Similarly, other male buckles with a structure basically the same as the first male buckle 20 can be directly locked to the first female buckle 30.

[0028] Furthermore, the rod 10 is a rigid structure, meaning it can maintain its original shape without deformation under a certain degree of stress. This allows it to stably support itself between the first male buckle 20 and the first female buckle 30, ensuring a clamping state. The material of the rod 10 is not limited; it can be hard plastic or metal. It should be noted that a rod structure that can be bent and maintain its stable shape under load also falls under the category of the rigid structure rod 10 described in this application. For example, metal tubes commonly used in tablet stands can be bent into shape, and when a load, such as an iPad or a small fan, is attached, it can maintain its current shape without sagging or only sagging slightly.

[0029] The length of the rod 10 can be set as needed, and the shape of the rod itself can also be set as needed. In this embodiment, the rod 10 includes a straight rod body and an extension formed by bending the ends of the rod body in the same direction.

[0030] Furthermore, the first male buckle 20 is rotatably connected to the rod body 10, allowing adjustment of its usage direction; the first female buckle 30 is rotatably connected to the rod body 10, allowing adjustment of its usage direction. This allows users to flexibly adjust the usage angle to meet different usage needs.

[0031] Furthermore, in some instances, to achieve a rotatable connection between the first male buckle 20 and the rod body 10, the first male buckle 20 is designed to be adjustable relative to the rod body 10. The first end of the rod body 10 is provided with a first ball portion 11 and a first connecting member 40. The first male buckle 20 is provided with a first connecting portion 22. The first connecting portion 22 is provided with a first connecting cavity 221 that matches the first ball portion 11. The first ball portion 11 is connected to the first connecting cavity 221. The first connecting member 40 is sleeved on the first connecting portion 22 and can adjust the tightness of the first connecting portion 22 and the first ball portion 11.

[0032] The first connecting portion 22 protrudes from the main body surface of the first male buckle 20. In this embodiment, the first connecting portion 22 is perpendicular to the main body surface of the first male buckle 20.

[0033] Furthermore, in some embodiments, the first connector 40 is cylindrical and movably sleeved on the rod 10. The diameter of the first end of the first connector 40 is larger than the diameter of the first ball portion 11, and the diameter of the second end of the first connector 40 is smaller than the diameter of the first ball portion 11, so that the first connector 40 cannot detach from the rod 10.

[0034] The first ball portion 11 is connected to the first connecting cavity 221. By operating the first connector 40 to strengthen the enclosure of the first connecting cavity 221 around the first ball portion 11, the first male buckle 20 and the first ball portion 11 can remain relatively stable. By operating the first connector 40 to weaken the enclosure of the first connector 40 around the first ball portion 11, the first male buckle 20 can be adjusted relative to the rod body 10 in terms of its angle and direction of use.

[0035] Furthermore, in this example, to specifically realize the influence of the first connector 40 on the first connecting part 22, the first connecting part 22 is provided with an axial notch. The design of the axial notch of the first connecting part 22 makes the first connecting part 22 easy to deform under the action of external force. The number of notches is not limited, but there is at least one. In this embodiment, four notches are provided on the first connecting part 22.

[0036] The outer wall of the first connecting part 22 is threaded, and the inner wall of the first connecting member 40 is threaded. The first connecting member 40 and the first connecting part 22 are connected together by threads, and the size of the first connecting part 22 can be adjusted by rotating it clockwise or counterclockwise to adjust the tightness of the first male buckle 20. When the first connecting member 40 is not tightened, the first ball part 11 can move within the first connecting cavity 221, and the first male buckle 20 can be easily adjusted in terms of its angle and direction relative to the rod body 10. During the tightening process of the first connecting member 40, the first connecting part 22 deforms towards the first ball part 11 under the action of the first connecting member 40, so that the first connecting part 22 and the first ball part 11 fit tightly together, and then the first connecting part 22 and the first ball part 11 are relatively fixed together, thereby fixing the first male buckle 20 relative to the rod body 10. In this way, by rotating the first connecting member 40, the tightness of the first connecting part 22 and the first ball part 11 can be adjusted, thereby facilitating the adjustment of the direction of use of the first male buckle 20 and keeping the first male buckle 20 in its current stable position.

[0037] Furthermore, in this example, the first connector 40 is provided with a first operating part 41 protruding from the outer surface. The first operating part 41 is used to provide a force application part for rotation operation to assist in completing the connection action when the first connector 40 and the first connecting part 22 are threaded together.

[0038] Furthermore, in other examples, to achieve a rotatable connection between the first female buckle 30 and the rod 10, the first female buckle 30 is designed to be adjustable in direction relative to the rod 10. The second end of the rod 10 is provided with a second ball portion 12 and a second connecting member 50. The first female buckle 30 is provided with a second connecting portion 32. The second connecting portion 32 is provided with a second connecting cavity 321 that matches the second ball portion 12. The second ball portion 12 is connected to the second connecting cavity 321. The second connecting member 50 is sleeved on the second connecting portion 32 to adjust the tightness of the second connecting portion 32 and the second ball portion 12.

[0039] The second connecting portion 32 protrudes from the main body surface of the first female buckle 30. In this embodiment, the second connecting portion 32 is nearly perpendicular to the main body surface of the first female buckle 30.

[0040] Furthermore, in some embodiments, the second connector 50 is cylindrical and sleeved on the rod 10. The diameter of the first end of the second connector 50 is larger than the diameter of the second ball portion 12, and the diameter of the second end is smaller than the diameter of the second ball portion 12, so that the second connector 50 cannot detach from the rod 10.

[0041] The second ball portion 12 is located inside the second connecting cavity 321. By operating the second connector 50 to strengthen the wrapping of the second connecting cavity 321 around the second ball portion 12, the first female buckle 30 and the second ball portion 12 can remain relatively fixed. By operating the second connector 50 to weaken the wrapping of the second ball portion, the first female buckle 30 can be adjusted relative to the rod body 10 in terms of its angle and direction of use.

[0042] Furthermore, in this example, in order to specifically realize the influence of the second connector 50 on the second connecting part 32, the second connecting part 32 is provided with an axial notch. The design of the axial notch of the second connecting part 32 makes the second connecting part 32 easy to deform under the action of external force.

[0043] The second connecting part 32 has threads on its outer wall, and the second connecting member 50 has threads on its inner wall. The second connecting member 50 and the second connecting part 32 are connected together by threads. By rotating clockwise and counterclockwise, the radial dimension of the second connecting part 32 can be adjusted, thereby adjusting the tightness between the first female buckle 30 and the rod body 10. When the second connecting member 50 is not tightened, the second ball part 12 can move within the second connecting cavity 321, and the first female buckle 30 can be easily adjusted in terms of its angle and direction relative to the rod body 10. During the tightening process of the second connecting member 50, the second connecting part 32 deforms towards the second ball part 12 under the action of the second connecting member 50, so that the second connecting part 32 and the second ball part 12 fit tightly together, and then the second connecting part 32 and the second ball part 12 are relatively fixed together, thereby fixing the first female buckle 30 relative to the rod body 10. In this way, by rotating the second connector 50, the tightness of the second connector 32 and the second ball 12 can be adjusted, thereby facilitating the adjustment of the usage direction of the first female buckle 30 and keeping the first female buckle 30 in the current stable position.

[0044] Furthermore, in this example, the second connector 50 is provided with a second operating part 51 protruding from the outer surface. The second operating part 51 is used to provide a force application part for rotation operation to assist in completing the connection action when the second connector 50 and the second connecting part 32 are threaded together.

[0045] In some instances, the manner in which the first male buckle 20 is rotatably connected to the rod 10 and the manner in which the first female buckle 30 is rotatably connected to the rod 10 may differ; in other instances, the manner in which the first male buckle 20 is rotatably connected to the rod 10 and the manner in which the first female buckle 30 is rotatably connected to the rod 10 may be the same. In this example, the manner in which the first male buckle 20 is rotatably connected to the rod 10 and the manner in which the first female buckle 30 is rotatably connected to the rod 10 are the same.

[0046] In use, the first male buckle 20 and the first female buckle 30 can be connected to other female buckles and male buckles respectively, especially to other male buckles and female buckles with the same structural principle as the first male buckle 20 and the first female buckle 30. In this way, the rod body can be extended and installed between the male buckles and female buckles that were originally directly connected, thereby changing the use position of the buckle and expanding the range of use.

[0047] Furthermore, the extension rod device also includes a second male buckle and a second female buckle. The second male buckle and the second female buckle are structurally matched and lockable together, and can be separated from each other. The second male buckle and the second female buckle are independent components relative to the first male buckle 20 and the first female buckle 30. The second male buckle and the second female buckle can function as the aforementioned fasteners. The first female buckle 30 and the second male buckle are structurally matched and lockable together, and can be separated from each other; the first male buckle 20 and the second female buckle are structurally matched and lockable together, and can be separated from each other. That is, the independent second male buckle and the second female buckle can be locked together and can be separated; the independent second male buckle can be locked together with the first female buckle 30 and can be separated; the independent second female buckle can be locked together with the first male buckle 20 and can be separated.

[0048] In use, one of the second male and second female buckles is fixedly installed at the place of use, such as the side of the stroller's frame, while the other is connected to the functional component that needs to be hung at the place of use, such as a storage bag, electric fan, or water bottle. In this way, the user can either hang the functional component at the place of use (e.g., hang the fan on the side of the stroller for airflow) using the cooperation of the second male and second female buckles, or insert the entire assembly consisting of the frame 10, the first female buckle 30, and the first male buckle 20 between the second male and second female buckles, thereby extending the fasteners connected to the functional component (such as the second male or second female buckle) to other positions, thus adjusting the usage position (e.g., extending the fan to the front of the stroller for airflow).

[0049] Furthermore, in some examples, to achieve rapid locking, the first male buckle 20 is provided with a first magnetic element 23, the first female buckle 30 is provided with a second magnetic element 33, the second male buckle is provided with a third magnetic element, and the second female buckle is provided with a fourth magnetic element. The first magnetic element 23 and the second magnetic element 33 attract each other in the locking direction of the first male buckle 20 and the first female buckle 30; the first magnetic element 23 and the fourth magnetic element attract each other in the locking direction of the first male buckle 20 and the second female buckle, thereby enabling the first male buckle 20 and the second female buckle to lock quickly; the second magnetic element 33 and the third magnetic element attract each other in the locking direction of the first female buckle 30 and the second male buckle, thereby enabling the first female buckle 30 and the second male buckle to lock quickly. The third magnetic element and the fourth magnetic element attract each other in the locking direction of the second male buckle and the second female buckle, thereby enabling the second male buckle and the second female buckle to lock quickly.

[0050] Furthermore, to achieve locking and unlocking, the first male buckle 20 and the second male buckle are each provided with a locking tongue 21 protruding from their surfaces, and the locking tongue 21 is provided with a locking groove 221. The locking tongues 21 of the first male buckle 20 and the second male buckle are identical in shape and size, so they can be used interchangeably with the first female buckle 30 and the second female buckle.

[0051] Furthermore, the latch 21 of the first male buckle 20 protrudes from the side surface of the first male buckle 20 opposite to the first connecting portion 22.

[0052] The first female buckle 30 and the second female buckle are respectively provided with a locking hole 31, a locking element 34 and a releasing element 35; the locking hole and locking element 34 of the first female buckle 30 and the second female buckle have the same shape and size, so they can be used for the first male buckle 20 and the second male buckle.

[0053] Furthermore, the locking hole 31 on the first female buckle 30 is located on the side of the first female buckle 30 opposite to the second connecting portion 32. The unlocking member 35 of the first female buckle 30 is located on the side of the first female buckle 30.

[0054] When the latch 21 is inserted into the lock hole 31, the locking member 34 engages within the lock groove 221, achieving locking of the first male buckle 20 with the second female buckle, the first female buckle 30 with the second male buckle, or the second female buckle with the second male buckle. The locking member 34 is provided with a locking part 341, the shape and size of which match the lock groove 221. When the locking part 341 is transverse to the latch 21 and enters the lock groove 221, the locking part 341 can restrict the axial movement of the latch 21, thereby enabling the corresponding male and female buckles to engage.

[0055] Furthermore, to actuate the locking member 34 and engage it with the latch 21, a fifth magnetic element 36 is provided within the locking member 34. When the latch 21 is inserted into the lock hole 31, the locking member 34 moves under the action of magnetic force, and finally the locking part 341 is locked in the lock groove 221 to achieve the locking of the corresponding male and female latches.

[0056] Furthermore, the release member 35 can actuate the locking member 34 to unlock. By operating the release member 35, the locking member 34 can be disengaged from the lock groove 221, and the bolt 21 can disengage from the lock hole 31, thereby achieving unlocking.

[0057] Furthermore, in this embodiment, the basic structure of the second male buckle is consistent with the basic structure of the first male buckle 20, and the basic structure of the second female buckle is consistent with the basic structure of the first female buckle 30. Thus, the first male buckle 20 can be locked / unlocked with the second female buckle, the first female buckle 30 can be locked / unlocked with the second male buckle, and the second female buckle can be locked / unlocked with the second male buckle. This also reduces production difficulty and increases the reuse rate of identical parts.

[0058] In use, when no extension or position adjustment is needed, the second male and second female buckles lock together, allowing the corresponding item to be mounted in the appropriate position. For example, a second male buckle can be installed on a fan, and a second female buckle on a stroller. By locking the second male and second female buckles together, the fan can be quickly mounted on the stroller. When the usage position needs to be adjusted, the second male and second female buckles are separated by the release mechanism 35, and then the first female buckle 30 is locked together with the second male buckle. The locking tongues of the first male and second female buckles are connected together, thus changing the usage position, for example, changing the position of the fan relative to the stroller. When further adjustment of the usage angle is required, the angle of the first male buckle 20 and the first female buckle 30 relative to the rod 10 can be adjusted by loosening or tightening the first connecting part 22 and / or the second connecting part 32, thereby adjusting the final usage angle. For example, after the first male buckle 20 is connected to the second female buckle on the stroller, the angle of the rod 10 relative to the stroller can be adjusted by loosening the first connecting part 22. After adjusting the approximate direction of the rod 10, tightening the first connecting part 22 will keep the rod 10 stably in its current state. After the rod 10 is adjusted to the correct position, the angle of the fan relative to the rod 10 can be further adjusted via the second connecting part 32 to adjust the actual direction of use of the fan.

[0059] The first male latch 20 and the first female latch 30 of this application are connected to the rod body 10 via a ball joint. Therefore, the first male latch 20 and the first female latch 30 have a large degree of freedom in rotation adjustment, and can be easily adjusted to a suitable angle for use. At least, in a plane perpendicular to the protruding direction of the latch 21, the first male latch 20 can rotate 360 ​​degrees arbitrarily. Similarly, in a plane perpendicular to the recessed direction of the lock hole 31, the first female latch 30 can rotate 360 ​​degrees arbitrarily.

[0060] Although the present invention has been disclosed through the above embodiments, the scope of the present invention is not limited thereto. Without departing from the concept of the present invention, the above components can be replaced by similar or equivalent elements known to those skilled in the art.

Claims

1. An extension pole device, characterized by: The utility model provides a rod body (10), first male buckle (20) and first female buckle (30), the rod body (10) first end is connected with first male buckle (20), second end is connected with first female buckle (30), first male buckle (20) and the structure of first female buckle (30) is matched with each other to realize locking and can separate each other, first male buckle (20) and first female buckle (30) can be extendedly connected between the buckle that can be locked together and can separate each other and adjust the use position of buckle.

2. An extension pole device as claimed in claim 1, characterised in that, The first male buckle (20) is rotatably connected with the rod body (10) to adjust the use direction of the first male buckle (20), and the first female buckle (30) is rotatably connected with the rod body (10) to adjust the use direction of the first female buckle (30).

3. An extension pole device as claimed in claim 2, wherein, The first end of the rod body (10) is provided with a first ball portion (11) and a first connecting piece (40), the first male buckle (20) is provided with a first connecting portion (22), the first connecting portion (22) is provided with a first connecting cavity (221) matched with the first ball portion (11), the first ball portion (11) is connected in the first connecting cavity (221), and the first connecting piece (40) is sleeved on the first connecting portion (22) and can adjust the tightness of the first ball portion (11) and the first connecting portion (22).

4. A lengthening rod device as defined in claim 3, wherein, The first connecting portion (22) is provided with an axial notch, the outer wall of the first connecting portion (22) is provided with threads, the inner wall of the first connecting piece (40) is provided with threads, and the first connecting piece (40) and the first connecting portion (22) are connected together through threads.

5. An extension pole apparatus as claimed in claim 2, wherein, The second end of the rod body (10) is provided with a second ball portion (12) and a second connecting piece (50), the first female buckle (30) is provided with a second connecting portion (32), the second connecting portion (32) is provided with a second connecting cavity (321) matched with the second ball portion (12), the second ball portion (12) is connected in the second connecting cavity (321), and the second connecting piece (50) is sleeved on the second connecting portion (32) and can adjust the tightness of the second connecting portion (32) and the second ball portion (12).

6. An extension pole device as claimed in claim 5, wherein, The second connecting portion (32) is provided with an axial notch, the outer wall of the second connecting portion (32) is provided with threads, the inner wall of the second connecting piece (50) is provided with threads, and the second connecting piece (50) and the second connecting portion (32) are combined together through threads.

7. An extension pole apparatus as claimed in claim 2, wherein, The buckle comprises a second male buckle and a second female buckle, the second male buckle and the second female buckle are matched with each other in structure and can be locked together, the first female buckle (30) and the second male buckle are matched with each other in structure and can be locked together, and the first male buckle (20) and the second female buckle are matched with each other in structure and can be locked together.

8. A lengthening rod device as defined in claim 7, wherein, The first male buckle (20) is provided with a first magnetic member (23); the first female buckle (30) is provided with a second magnetic member (33); the second male buckle is provided with a third magnetic member, and the second female buckle is provided with a fourth magnetic member; the first magnetic member (23) and the second magnetic member (33) are attracted to each other in the locking direction of the first male buckle (20) and the first female buckle (30); the first magnetic member (23) and the fourth magnetic member are attracted to each other in the locking direction of the first male buckle (20) and the second female buckle, so that the first male buckle (20) and the second female buckle can be quickly locked; the second magnetic member (33) and the third magnetic member are attracted to each other in the locking direction of the first female buckle (30) and the second male buckle, so that the first female buckle (30) and the second male buckle can be quickly locked; the third magnetic member and the fourth magnetic member are attracted to each other in the locking direction of the second male buckle and the second female buckle, so that the second male buckle and the second female buckle can be quickly locked.

9. An extension pole device as claimed in claim 7, wherein, The first male buckle (20) and the second male buckle are respectively provided with a lock tongue (21) protruding from the surface thereof, the lock tongue (21) is provided with a lock groove (221), and the first female buckle (30) and the second female buckle are respectively provided with a lock hole (31), a locking member (34) and a releasing member (35); when the lock tongue (21) is inserted into the lock hole (31), the locking member (34) is stopped in the lock groove (221) to realize the locking between the first male buckle (20) and the second female buckle, the first female buckle (30) and the second male buckle, or the locking between the second male buckle and the second female buckle; when the releasing member (35) is operated, the locking member (34) can be withdrawn from the lock groove (221), and the lock tongue (21) can be separated from the lock hole (31) to realize unlocking.

10. A lengthening rod device as in claim 4, wherein, The first connecting member (40) is provided with a first operation part (41) protruding from the outer surface, and the first operation part (41) is used for providing a force application part for rotation operation to assist in completing the connecting action when the first connecting member (40) is threadedly connected with the first connecting part (22).

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