Device capable of quickly adjusting length

Abstract

A device capable of rapidly adjusting the length comprises an outer pipe assembly and an inner pipe assembly, the inner pipe assembly is arranged in the outer pipe assembly in a sliding mode, the inner pipe assembly comprises a connecting end, the connecting end is provided with an adjusting device, a transmission assembly is arranged in the inner pipe assembly, the adjusting device comprises a fixing assembly and an expansion assembly, and the fixing assembly is provided with a first end and a second end. The fixing assembly has the axial width gradually increasing from the first end to the second end, the transmission assembly is arranged in the fixing assembly in a penetrating mode, and the transmission assembly can drive the expansion assembly to be away from or close to the second end, so that the expansion assembly has the radial contraction and expansion states, and therefore the inner pipe assembly and the outer pipe assembly are kept sliding relatively or locked.

Description

Technical Field

[0001] The utility model relates to the technical field of climbing auxiliary equipment, in particular to a device capable of quickly adjusting the length and a trekking pole capable of quickly adjusting the length. Background Art

[0002] A trekking pole is an auxiliary tool specially designed for mountaineering activities. Traditional trekking poles are difficult to operate and very inconvenient when quickly adjusting the height of use.

[0003] In the US patent application number 16455231, a system and method for an adjustable-length weighted trekking pole is disclosed, and specifically the length of the trekking pole is adjusted by a pin and hole connector. This adjustment method is inconvenient to operate, and frequent insertion and removal of the pin may cause wear of the hole, thereby affecting the stability of the connection and the overall durability of the trekking pole. In addition, in the US patent application number 13691812, a telescopic member adjustment mechanism is disclosed, which increases the complexity by using a mechanical interlocking system to adjust the use length of the trekking pole, thereby making the construction, maintenance and repair costs of such equipment high.

[0004] Based on this, it is necessary to propose a new device, which is simple and convenient to operate when adjusting the use length of the trekking pole. Utility Model Content

[0005] The utility model provides a device capable of quickly adjusting the length, comprising an outer tube assembly and an inner tube assembly, wherein the inner tube assembly can be slidably arranged in the outer tube assembly, the inner tube assembly comprises a connecting end, and the connecting end is provided with an adjusting device;

[0006] The inner tube assembly is provided with a transmission assembly, the adjustment device includes a fixed assembly and an expansion assembly, the fixed assembly has a first end and a second end, the fixed assembly has an axial width that gradually increases from the first end to the second end, the transmission assembly is inserted into the fixed assembly, and the transmission assembly can drive the expansion assembly away from or close to the second end, so that the expansion assembly has a radial contraction and expansion state;

[0007] When the expansion assembly is away from the second end, the expansion assembly is in a contracted state, and the inner tube assembly can slide relative to the outer tube assembly. When the expansion assembly is close to the second end and abuts against the second end, the expansion assembly is in an expanded state and keeps the outer tube assembly and the inner tube assembly in a locked position.

[0008] The transmission assembly can drive the expansion assembly to move away from or closer to the first part, wherein when the expansion assembly moves away from the first part, the expansion assembly is in a contracted state, and the outer tube assembly can slide relative to the inner tube assembly; when the expansion assembly moves closer to the first part and abuts against the bottom end, the expansion assembly is in an expanded state, and the expansion assembly can keep the outer tube assembly and the inner tube assembly in a locked position.

[0009] The utility model provides a device capable of quickly adjusting the length, comprising an outer tube assembly and an inner tube assembly, wherein the inner tube assembly can be slidably arranged in the outer tube assembly, the inner tube assembly comprises a connecting end, and the connecting end is provided with an adjusting device;

[0010] The inner tube assembly is provided with a transmission assembly, the transmission assembly includes a transmission rod and a pressing assembly, the adjustment device includes an expansion assembly and a fixing assembly, the fixing assembly has a first end and a second end, the fixing assembly has an axial width that gradually increases from the first end to the second end, the transmission rod is inserted into the fixing assembly, and the pressing assembly can drive the transmission rod to move axially along the inner tube assembly, thereby driving the expansion assembly away from or close to the second end, so that the expansion assembly has a radial contraction and expansion state;

[0011] When the expansion assembly is away from the second end, the expansion assembly is in a contracted state, and the inner tube assembly can slide relative to the outer tube assembly. When the expansion assembly is close to the second end and abuts against the second end, the expansion assembly is in an expanded state and keeps the outer tube assembly and the inner tube assembly in a locked position.

[0012] The utility model also provides a trekking pole with quickly adjustable length, comprising a telescopic support rod assembly and an adjusting device arranged in the support rod assembly;

[0013] The support rod assembly is also provided with a fixing assembly, the fixing assembly having a first end and a second end, and the fixing assembly having an axial width that gradually increases from the first end to the second end;

[0014] The adjusting device includes a transmission component and an expansion component. The transmission component includes a transmission rod and a pressing component. The transmission rod is arranged in the fixing component. The transmission rod can drive the expansion component away from or close to the second end, so that the expansion component has a radial contraction and expansion state.

[0015] When the expansion assembly is away from the second end, the expansion assembly is in a contracted state and the strut assembly is in an extended or contracted state. When the expansion assembly is close to the second end and abuts against the second end, the expansion assembly is in an expanded state and keeps the strut assembly in a locked position.

[0016] Compared with the prior art, the beneficial effect of the utility model is that the operation is simple and convenient when adjusting the use length of the trekking pole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the implementation manner will be briefly introduced below. Obviously, the drawings described below are only some implementation manners of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the overall cross-sectional structure of a device capable of quickly adjusting the length;

[0019] Figure 2 is a schematic diagram of the cross-sectional structure of the transmission component;

[0020] Figure 3 It is a schematic diagram of the cross-section enlarged structure of the support block;

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the connection between the expansion component and the fixing component;

[0022] Figure 5 Schematic diagram of the expansion assembly;

[0023] Figure 6 is a schematic diagram of the cross-sectional structure of the outer tube assembly;

[0024] Figure 7 It is a schematic diagram of the connection structure between the lower rod section and the outer tube assembly;

[0025] Figure 8 A schematic diagram of the cross-sectional structure of the connection between the lower rod section and the outer tube assembly;

[0026] Fig. 9 It is a schematic structural diagram of the outer protective cover (1001) and the tip portion of the outer tube assembly and the inner tube assembly;

[0027] Fig.10 It is a structural schematic diagram of the handle part;

[0028] Fig.11 It is a schematic diagram of the structure of a trekking pole with quickly adjustable length;

[0029] Figure 12-13 It is a schematic structural diagram of the handle portion in another embodiment.

[0030] In the figure:

[0031] Device for quickly adjusting length (100); outer tube assembly (1000); protective sleeve (1001); inner tube assembly (2000); connecting end (2001); stopper (2002); through hole (2201); groove (2202); stopper (2203); protruding block (2204); second elastic member (2003); positioning block (2004); positioning hole (2005); lower section rod (2006); mounting hole (2007); sheath (2008); tip portion (2009); handle portion (2010); connecting shaft (2011); adjusting device The invention comprises a first elastic member (3000); a transmission assembly (3001); a transmission rod (3101); a pressing assembly (3102); a first elastic member (3103); a fixing block (3104); a pressing portion (3105); a third elastic member (3106); an expansion assembly (3002); a connecting portion (3201); a connecting hole (3202); an expansion portion (3203); an elastic groove (3204); an expansion gap (3205); a reset ring (3206); a fixing assembly (3003); a first end (3301); a second end (3302); a transmission channel (3303);

[0032] A trekking pole (110); a support rod assembly (120); an adjusting device (130); a transmission assembly (131); an expansion assembly (132); a transmission rod (133); a pressing assembly (134); a fixing assembly (140); a first end (141); a second end (142); a rod body (1'); a handle (21'); and a button (3'). DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] Reference to "embodiment" or "implementation" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment or implementation may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0035] In this specification, for the sake of convenience, the words and phrases indicating the orientation or positional relationship such as "middle", "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like are used to illustrate the positional relationship of the constituent elements with reference to the drawings. This is only for the convenience of describing this specification and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. The positional relationship of the constituent elements is appropriately changed according to the orientation of the constituent elements being described. Therefore, it is not limited to the words and phrases described in the specification, and can be appropriately replaced according to the circumstances.

[0036] The utility model discloses a device 100 capable of quickly adjusting the length, such as Figure 1 As shown, it includes an outer tube assembly 1000 and an inner tube assembly 2000, wherein the inner tube assembly 2000 can be slidably configured in the outer tube assembly 1000, the inner tube assembly 2000 includes a connecting end 2001, the connecting end 2001 is provided with an adjusting device 3000, the inner tube assembly 2000 is provided with a transmission assembly 3001, the adjusting device 3000 includes an expansion assembly 3002 and a fixing assembly 3003, the fixing assembly 3003 has a first end 3301 and a second end 3302, the fixing assembly 3003 has an axial width that gradually increases from the first end 3301 to the second end 3302, and the transmission assembly 3001 is arranged in the fixing component 3003. The transmission component 3001 can drive the expansion component 3002 away from or close to the second end 3302, so that the expansion component 3002 has a radial contraction and expansion state. When the expansion component 3002 is away from the second end 3302, the expansion component 3002 is in a contracted state, and the inner tube component 2000 can slide relative to the outer tube component 1000. When the expansion component 3002 is close to the second end 3302 and abuts against the second end 3302, the expansion component 3002 is in an expansion state and keeps the outer tube component 1000 and the inner tube component 2000 in a locked position. Through the coordinated use of the transmission component 3001 and the expansion component 3002, the user can quickly adjust the relative length between the outer tube component and the inner tube component to meet different usage requirements.

[0037] In this embodiment, if Figure 2As shown, the transmission assembly 3001 includes a transmission rod 3101, and a pressing assembly 3102 connected to the top of the transmission rod 3101. The pressing assembly 3102 can drive the transmission assembly 3001 to move axially along the inner tube assembly 2000. The transmission assembly 3001 also includes a first elastic member 3103 disposed inside the inner tube assembly 2000. A fixing block 3104 is also disposed on the transmission rod 3101, and one end of the first elastic member 3103 abuts against the fixing block 3104. Through the pressing assembly 3102 at the top, the user can drive the transmission assembly 3001 more easily, making the adjustment process more simple and intuitive. The first elastic member 3103 can also automatically reset the transmission assembly 3001 to its original state after the pressing force is canceled, so as to facilitate repeated use.

[0038] In other embodiments (not shown in the figure), multiple elastic members with different elastic coefficients are arranged inside the inner tube assembly 2000 to provide different levels of resistance and reset force, which are suitable for different working environments. In other embodiments (not shown in the figure), a position sensor or a pressure sensor is integrated in the transmission assembly to monitor and adjust the relative position between the inner tube assembly 2000 and the outer tube assembly 1000 or the state of the expansion assembly 3002 in real time. In other embodiments (not shown in the figure), a motor device is arranged in the inner tube assembly 2000, and the motor device is used to replace manual pressing, making the operation more convenient and automatic.

[0039] In this embodiment, if Figure 3 As shown, the other end of the first elastic member 3103 is in contact with the fixed component 3003 and can elastically push the fixed component 3003. A transmission channel 3303 is provided inside the fixed component 3003. The transmission rod 3101 is passed through the transmission channel 3303 and extends outward to be connected with the expansion component 3002. The transmission rod 3101 is passed through the transmission channel 3303 and is connected with the expansion component 3002. This direct connection method can reduce energy loss and improve transmission efficiency.

[0040] In other embodiments (not shown in the figures), the fixing assembly 3003 has a transmission channel 3303 with an adjustable diameter, so that it can adapt to transmission rods 3101 of different diameters, thereby improving the versatility and flexibility of the device.

[0041] In other embodiments (not shown), a damping system is added between the fixing assembly 3003 and the first elastic member 3103 to reduce vibration and improve stability, especially under high-speed movement or heavy load conditions.

[0042] In other embodiments (not shown in the figures), a microprocessor and a sensor network are integrated in the inner tube assembly 2000 to monitor and adjust the position of the fixing assembly 3003 and the state of the expansion assembly 3002 in real time to achieve automatic control.

[0043] In other embodiments (not shown), thermal expansion compensation material is added to the fixing component 3003 or the transmission rod 3101 to automatically adjust the length to offset the impact of temperature changes.

[0044] In this embodiment, if Figure 4 As shown, the expansion assembly 3002 includes a connecting portion 3201, a connecting hole 3202 is provided on the connecting portion 3201, an internal thread is provided on the connecting hole 3202, and an external thread is provided on the bottom end portion of the transmission rod 3101. The transmission rod 3101 is inserted into the connecting hole 3202 and extends downward, and is connected by threaded fastening, so that the transmission rod 3101 and the expansion assembly 3002 are connected. Through the threaded fastening connection, the connection between the transmission rod 3101 and the expansion assembly 3002 is more secure, reducing the possibility of loosening during use. If the transmission rod 3101 needs to be replaced or repaired, the threaded connection makes it easier to disassemble and reinstall.

[0045] In other embodiments (not shown in the figures), a spring locking mechanism is integrated inside the connecting portion 3201, and when the transmission rod 3101 is inserted into the connecting hole, it is automatically locked to prevent it from falling off in a vibrating environment.

[0046] In this embodiment, if Figure 4-5 As shown, the expansion assembly 3002 also includes an expansion portion 3203, and the expansion portion 3203 defines an elastic groove 3204. When the elastic groove 3204 is configured to release the second end 3302, the expansion portion 3203 contracts radially and releases the pressure applied to the inner wall of the outer tube assembly 1000, thereby releasing the inner tube assembly 2000 and the outer tube assembly 1000, so that the inner tube assembly 2000 and the outer tube assembly 1000 can slide relative to each other. When the elastic groove 3204 is configured to receive the second end 3302, the expansion portion 3203 expands radially and applies pressure to the inner wall of the outer tube assembly 1000, and the inner tube assembly 2000 and the outer tube assembly 1000 are in a locked position, which is conducive to adjusting the length and simplifies the operation process. The user can quickly adjust the length without complicated tools or steps, thereby improving work efficiency.

[0047] In this embodiment, if Figure 5 As shown, the expansion portion 3203 has a plurality of expansion gaps 3205, which are conducive to the radial contraction or expansion of the expansion portion 3203. A reset ring 3206 is arranged on the outer side of the expansion portion 3203, and the reset ring 3206 is made of elastic material. The expansion gaps 3205 enable the expansion portion 3203 to contract or expand radially more easily, providing better elastic adjustment capability. The reset ring 3206 is made of elastic material, and can quickly return to the original state after the expansion portion 3203 releases the second end 3302, thereby improving the efficiency of the operation.

[0048] In other embodiments (not shown in the figures), a hydraulic system is provided in the expansion portion 3203, and the hydraulic system can assist the expansion and contraction of the expansion portion 3203 to provide greater force and control precision.

[0049] In this embodiment, if Figure 6 As shown, the outer tube assembly 1000 is further provided with a limit block 2002, the lower end of the limit block 2002 is abutted against a second elastic member 2003, the limit block 2002 is provided with a through hole 2201, the through hole 2201 is provided with an internal thread, the transmission rod 3101 passes through the through hole 2201 and is fastened to the limit block 2002 through a threaded connection, so that the transmission rod 3101 can drive the limit block 2002 to move longitudinally, and the limit block 2002 is provided with a through hole 2201. A groove 2202 is provided, in which a limiting member 2203 is provided, and a protruding block 2204 is provided at the bottom of the limiting member 2203. A positioning block 2004 is also provided at the lower end of the outer tube assembly 1000, and the positioning block 2004 has a positioning hole 2005. The limiting member 2203 is inserted into the positioning hole 2005 and fixed by the protruding block 2204, and the lower end of the second elastic member 2003 abuts against the upper end of the positioning block 2004. The limiting block 2002 is inserted into the through hole 2201 and is threadedly connected to the transmission rod 3101, so that precise longitudinal movement can be achieved, thereby providing better position control. The second elastic member 2003 provides stable elastic support for the limiting block 2002, reducing the influence of vibration and impact on positioning accuracy.

[0050] In other embodiments (not shown in the figures), a self-locking mechanism is added in the groove 2202 to automatically lock the limiter 2203 when the preset position is reached to prevent movement due to vibration or misoperation.

[0051] In this embodiment, if Figure 7-8 As shown, the lower end of the outer tube assembly 1000 is also connected to a lower section rod 2006, wherein the lower section rod 2006 can slide relative to the outer tube assembly 1000, and at least one mounting hole 2007 is respectively provided on the lower section rod 2006 and the outer tube assembly 1000, and the interior of the lower section rod 2006 includes at least one sheath 2008, when the sheath 2008 is inserted into the mounting hole 2007, the lower section rod 2006 and the outer tube assembly 1000 are in a locked position, and when the sheath 2008 is released, the lower section rod 2006 and the outer tube assembly 1000 can slide relative to each other to adjust the use length. The lower section rod 2006 can slide relative to the outer tube assembly 1000, providing flexibility in adjusting the length and adapting to different use scenarios. Through the cooperation of the mounting hole 2007 and the sheath 2008, the user can quickly adjust and fix the position of the lower section rod 2006 by inserting and releasing the sheath 2008, and the operation is simple.

[0052] In other embodiments (not shown in the figure), a quick release button is provided in the outer tube assembly 1000 to quickly release the sheath 2008 so that the lower section rod 2006 can be quickly adjusted or removed. In other embodiments (not shown in the figure), a scale or length mark is marked on the lower section rod 2006 to facilitate the user to quickly find the desired length position and ensure repeatability.

[0053] In this embodiment, if Fig. 9 As shown, the outer side of the outer tube assembly 1000 and the inner tube assembly 2000 is provided with a protective cover 1001, and the bottom of the lower section rod 2006 is provided with a tip portion 2009. The protective cover 1001 can protect the inner and outer tube assemblies from damage by the external environment, such as dustproof, waterproof or mechanical damage, and extend the service life of the device. The tip portion 2009 makes it easier to insert the lower section rod 2006 into the ground or other media, which is suitable for application scenarios where the position of the device needs to be fixed.

[0054] In other embodiments (not shown in the figures), the tip portion 2009 is a detachable structure, allowing the user to adjust or replace it according to different usage requirements.

[0055] In this embodiment, if Fig.10 As shown, the top of the inner tube assembly 2000 is connected with a handle portion 2010, and a pressing assembly 3102 is connected to the front end surface of the handle portion 2010 through a connecting shaft 2011. The pressing assembly 3102 includes a pressing portion 3105, and the pressing portion 3105 can move axially around the connecting shaft 2011. The pressing assembly 3102 also includes a third elastic member 3106. When the pressing portion 3105 is pressed downward, the pressing portion 3105 elastically pushes the third elastic member 3106 to drive the transmission assembly 3001 to move longitudinally. The pressing assembly 3102 allows the user to control the transmission assembly 3001 through an intuitive pressing action to achieve the adjustment of the length of the inner tube assembly 2000. The third elastic member 3106 provides elastic feedback, and when no longer applying pressure, it can push the pressing portion 3105 back to its original position, which is convenient for continuous operation.

[0056] In other embodiments (not shown in the figure), a vibration feedback mechanism is added to the pressing part 3105 to provide a vibration prompt when a preset position or force is reached to enhance the user's operation perception. In other embodiments (not shown in the figure), an integrated electronic control system is set in the pressing part 3105 to control the movement of the pressing component 3102 through buttons or touch screens to achieve automatic control.

[0057] In this embodiment, the expansion component 3002 is made of an elastic material. Elastic materials are generally able to withstand repeated deformation without damage, and the expansion component can maintain its function after multiple uses. Secondly, the elastic material can deform when subjected to external force and return to its original shape after the external force is removed, which provides good flexibility and adaptability for the expansion component. In addition, elastic materials often have good temperature resistance and chemical stability, which allows the expansion component to work under various environmental conditions without being degraded by the influence of temperature or chemicals.

[0058] In other embodiments (not shown), a layer of wear-resistant material is coated on the surface of the expansion component 3002. This can improve the durability and long-term stability of the component, especially in environments with frequent friction or high loads.

[0059] In another preferred embodiment, the utility model also provides a quickly adjustable trekking pole 110, such as Fig.11 As shown, it includes a telescopic support rod assembly 120, and an adjustment device 130 for quickly adjusting the length of the support rod assembly; a fixing assembly 140 is provided in the support rod assembly 120, the fixing assembly has a first end 141 and a second end 142, and the fixing assembly 140 has an axial width that gradually increases from the first end 141 to the second end 142, and the adjustment mechanism 130 includes a transmission assembly 131 and an expansion assembly 132, and the transmission assembly 131 includes a transmission rod 133 and a pressing assembly 134, and the transmission rod 133 passes through The transmission rod 133 is arranged in the fixing assembly 140 and can drive the expansion assembly 132 away from or close to the second end 142, so that the expansion assembly 132 has a radial contraction and expansion state. When the expansion assembly 132 is away from the second end 142, the expansion assembly 132 is in a contraction state, and the support rod assembly 120 is in an extension or contraction state. When the expansion assembly 132 is close to the second end 142 and abuts against the second end 142, the expansion assembly 132 is in an expansion state and keeps the support rod assembly 120 in a locked position.

[0060] In other embodiments, Figure 12-13 As shown, the lateral part of the handle is divided by the rod body 1' and extends laterally to both sides of the rod body, and the extension lengths of the two sides are different. The longer side is the grip 21', and the hand is held at this lateral part, which is convenient for the elderly and leg disabled people to use. The shorter side is an extended button 3', and the thumb at the grip can be extended forward to press the button to release the lock between the first rod body and the second rod body, so that the length of the cane can be adjusted. After releasing the button, the first rod body and the second rod body can be locked again. By arranging a control component that can be operated by one hand on the handle, the cane can be easily and safely adjusted to any reasonably required length, which not only increases the convenience of using the cane, but also facilitates the user to maintain body balance when adjusting the length of the cane, thereby increasing the safety of use.

[0061] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A device (100) capable of quickly adjusting length, characterized in that: The invention comprises an outer tube assembly (1000) and an inner tube assembly (2000), wherein the inner tube assembly (2000) is slidably arranged in the outer tube assembly (1000), and the inner tube assembly (2000) comprises a connecting end (2001), and the connecting end (2001) is provided with an adjusting device (3000); and The inner tube assembly (2000) is provided with a transmission assembly (3001), the adjustment device (3000) comprises a fixing assembly (3003) and an expansion assembly (3002), the fixing assembly (3003) has a first end (3301) and a second end (3302), the fixing assembly (3003) has an axial width that gradually increases from the first end (3301) to the second end (3302), the transmission assembly (3001) is inserted into the fixing assembly (3003), and the transmission assembly (3001) can drive the expansion assembly (3002) to move away from or approach the second end (3302), so that the expansion assembly (3002) has a radial contraction and expansion state; and When the expansion component (3002) is away from the second end (3302), the expansion component (3002) is in a contracted state, and the inner tube component (2000) can slide relative to the outer tube component (1000); when the expansion component (3002) is close to the second end (3302) and abuts against the second end (3302), the expansion component (3002) is in an expanded state and keeps the outer tube component (1000) and the inner tube component (2000) in a locked position.

2. A device (100) capable of quickly adjusting length according to claim 1, characterized in that: The transmission assembly (3001) comprises a transmission rod (3101) and a pressing assembly (3102) connected to the top end of the transmission rod (3101), wherein the pressing assembly (3102) can drive the transmission assembly (3001) to move axially along the inner tube assembly (2000), and the transmission assembly (3001) further comprises a first elastic component (3103) arranged inside the inner tube assembly (2000), and a fixing block (3104) is also arranged on the transmission rod (3101), and one end of the first elastic component (3103) is in abutment with the fixing block (3104).

3. A device (100) capable of quickly adjusting length according to claim 2, characterized in that: The other end of the first elastic member (3103) is in contact with the fixing component (3003) and can elastically push the fixing component (3003). A transmission channel (3303) is provided inside the fixing component (3003). The transmission rod (3101) is inserted into the transmission channel (3303) and extends downward to be connected with the expansion component (3002). The expansion component (3002) includes a connecting portion (3201). A connecting hole (3202) is provided on the connecting portion (3201). The transmission rod (3101) is inserted into the connecting hole (3202) and is fastened by threads, so that the transmission rod (3101) and the expansion component (3002) are connected.

4. The device (100) capable of quickly adjusting length according to claim 3, characterized in that: The expansion assembly (3002) further comprises an expansion portion (3203), wherein the expansion portion (3203) defines an elastic groove (3204). When the elastic groove (3204) is configured to release the second end (3302), the expansion portion (3203) contracts radially and releases the pressure applied to the inner wall of the outer tube assembly (1000), thereby releasing the inner tube assembly (2000) and the outer tube assembly (1000), so that the inner tube assembly (2000) and the outer tube assembly (1000) can slide relative to each other. When the elastic groove (3204) is configured to abut the second end (3302), the expansion portion (3203) expands radially and applies pressure to the inner wall of the outer tube assembly (1000), so that the inner tube assembly (2000) and the outer tube assembly (1000) are in a locked position.

5. The device (100) capable of quickly adjusting length according to claim 4, characterized in that: The expansion portion (3203) has a plurality of expansion gaps (3205), and the expansion gaps (3205) are conducive to the radial contraction or expansion of the expansion portion (3203). A reset ring (3206) is arranged on the outer side of the expansion portion (3203), and the reset ring (3206) is made of elastic material. A limit block (2002) is also arranged in the outer tube assembly (1000), and the lower end of the limit block (2002) is abutted against the second elastic member (2003).

6. A device (100) capable of quickly adjusting length according to claim 5, characterized in that: The limit block (2002) is provided with a through hole (2201), the transmission rod (3101) passes through the through hole (2201) and is fastened to the limit block (2002) by a threaded connection, so that the transmission rod (3101) can drive the limit block (2002) to move longitudinally, the limit block (2002) is provided with a groove (2202), a limit piece (2203) is provided in the groove (2202), and a protruding block (2204) is provided at the bottom of the limit piece (2203).

7. A device (100) capable of quickly adjusting length according to claim 6, characterized in that: The lower end of the outer tube assembly (1000) is also provided with a positioning block (2004), the positioning block (2004) has a positioning hole (2005), the limiting member (2203) is inserted into the positioning hole (2005) and is fixed by the protruding block (2204), the lower end of the second elastic member (2003) abuts against the upper end of the positioning block (2004), and the lower end of the outer tube assembly (1000) is also connected to a lower section rod (2006), wherein the lower section rod (2006) can slide relative to the outer tube assembly (1000).

8. The device (100) capable of quickly adjusting length according to claim 7, characterized in that: At least one mounting hole (2007) is respectively provided on the lower rod section (2006) and the inner tube assembly (2000); the interior of the lower rod section (2006) includes at least one sheath (2008); when the sheath (2008) is inserted into the mounting hole (2007), the lower rod section (2006) and the outer tube assembly (1000) are in a locked position; when the sheath (2008) is released, the lower rod section (2006) and the outer tube assembly (1000) can slide relative to each other to adjust the use length.

9. The device (100) capable of quickly adjusting length according to claim 8, characterized in that: The outer sides of the outer tube assembly (1000) and the inner tube assembly (2000) are provided with protective sleeves (1001), and the bottom of the lower section rod (2006) is provided with a tip portion (2009).

10. The device (100) capable of quickly adjusting length according to claim 9, characterized in that: The top end of the inner tube assembly (2000) is connected to a handle portion (2010), and the pressing assembly (3102) is connected to the front end surface of the handle portion (2010) via a connecting shaft (2011). The pressing assembly (3102) includes a pressing portion (3105), and the pressing portion (3105) can move axially around the connecting shaft (2011). The pressing assembly (3102) also includes a third elastic member (3106). When the pressing portion (3105) is pressed downward, the pressing portion (3105) elastically pushes the third elastic member (3106), thereby driving the transmission assembly (3001) to move longitudinally.

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