An adjustable pipe connection

Abstract

The utility model discloses an adjustable pipe fitting connecting structure, be applied to the device of pipe fitting locking, for example music stand, lamp stand or photography support. The structure includes the cooperation of main pipe and center pipe with the way of socket joint, and the setting of the shrinkage sleeve in the connecting part. The inside of shrinkage sleeve is equipped with extrusion locking mechanism and bolt assembly. User tightens the knob outside, drives extrusion locking mechanism and bolt assembly integral rotation. The nut embedded in the shrinkage sleeve cooperates with bolt, drives extrusion locking mechanism to apply the clamping force along the radial direction to the inside, realizes reliable locking to main pipe and center pipe. The structure utilizes the thread action and radial extrusion to realize double locking, can stably and reliably fix the pipe fitting, and the compact structure, easy operation.

Description

Technical Field

[0001] This utility model relates to the field of pipe connection technology, and in particular to a connection structure that can be used to adjust the height and lock the pipe, for example, it can be applied to equipment that requires pipe telescopic locking such as music score holders, lamp stands, and photography stands. Background Technology

[0002] In various support equipment, such as music stands, light stands, photography stands, or microphone stands, telescopic tubing structures are commonly used to achieve flexible height adjustment and portability. Traditional tubular connection and locking methods mainly include knob locking, snap-locking, or spiral friction locking. However, some locking methods in existing technologies have the following drawbacks: Insufficient locking reliability: Some locking mechanisms rely solely on friction or simple engagement, which can easily loosen or slip under high loads or prolonged use, affecting the overall stability and safety of the equipment. Complex or inconvenient operation: Some structures require two-handed operation or have cumbersome steps, especially in scenarios requiring rapid adjustments, such as performances or photography, resulting in a poor user experience. Lack of compactness: Some locking devices have complex structures, occupying a large amount of space, which does not meet the requirements of lightweight and portable design in modern equipment.

[0003] Therefore, existing technologies require an adjustable tubular connection structure that is compact, reliably locked, and easy to operate to meet the market demand for portable support equipment. Summary of the Invention

[0004] To overcome at least one of the defects in the prior art, this utility model provides an adjustable pipe connection structure to solve the problems of existing supports in terms of stability, adjustment and locking, and ease of storage.

[0005] The technical solution adopted by this utility model is to provide an adjustable pipe connection structure, characterized in that it includes: a main pipe and a central pipe, which are fitted together in a sleeve manner to form a relatively sliding connection; a reducing sleeve disposed at the connection between the main pipe and the central pipe, the upper end of which has a hole that matches the central pipe and the lower end of which matches the main pipe; a compression locking mechanism disposed inside the reducing sleeve, used to apply compression force to the main pipe and the central pipe in the radial direction; a knob installed in the transverse through groove of the reducing sleeve and fixedly connected to the compression locking mechanism, used to drive the compression locking mechanism to rotate; a bolt assembly disposed inside the compression locking mechanism, including a bolt connected to the knob and a nut that matches it, wherein the rotation of the knob drives the compression locking mechanism to rotate, thereby causing the bolt assembly to engage with the nut during the rotation of the knob, thereby pressing the main pipe and the central pipe; wherein the bolt assembly rotates integrally with the compression locking mechanism, and a double locking is achieved through the engagement between the nut and the bolt.

[0006] As an improvement, the compression locking mechanism includes a compression surface, which, when the knob is tightened, drives the compression locking mechanism to move inward, thereby applying a clamping force to the main tube and the central tube.

[0007] Preferably, the knob is connected to the bolt assembly via a thread, and rotating the knob causes the bolt and the clamping locking mechanism to rotate together.

[0008] Preferably, the nut is a nut fitted into the reducing sleeve, and the nut and the reducing sleeve do not undergo relative displacement.

[0009] In a further improvement, the knob is a knob with an anti-slip embossed structure.

[0010] In a further improvement, both the main pipe and the central pipe are axially movable pipe fittings.

[0011] Furthermore, the adjustable tubular connection structure is applied to the tubular connection and height adjustment parts of music score holders, lamp stands, or photography stands.

[0012] Other improvements and advantages of this invention will be set forth in the detailed description that follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures particularly pointed out in the description and drawings. Attached Figure Description

[0013] Figure 1 This is an overall structural diagram of the music score holder of this utility model; Figure 2 This is a schematic diagram of the height adjustment tube of the music score holder of this utility model. Figure 3 This is a schematic diagram of the reduced-length sleeve of the music score holder of this utility model; Figure 4 This is a schematic diagram of the support leg of the music score holder of this utility model; Figure 5 In this utility model Figure 4 A sectional view of the structure; Figure 6 This is a folding diagram of the music score holder of this utility model.

[0014] Explanation of reference numerals in the attached figures: 1. Sheet music placement structure; 2. Height adjustment tube; 21. Main tube; 22. Central tube; 23. Reduction sleeve; 24. Compression locking mechanism; 25. Transverse through groove; 26. Knob; 27. Bolt assembly; 271. Bolt; 272. Nut; 29. ​​Compression surface; 3. Central base; 32. Positioning hole; 4. Support leg; 41. Movable block; 42. Locking pin; 43. Offset component; 44. External operating component; 45. Pressing pin; 46. Slide groove. Detailed Implementation

[0015] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0016] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0017] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] See Figures 1-6 As shown in the figure, this utility model embodiment discloses a portable music score holder, including a music score placement structure 1, a height adjustment tube 2, a central base 3, and support legs 4.

[0019] The sheet music placement structure 1 is located at the top of the support and is used to support the sheet music. This structure can be a flat plate structure or an adjustable bracket structure. In this embodiment, after the angle is adjusted, the sheet music placement structure 1 can be fixedly connected to the height adjustment tube 2 by a nut to achieve flexible adjustment of the sheet music placement angle.

[0020] The height adjustment tube 2 is connected between the music score placement structure 1 and the central base 3 to achieve height adjustment.

[0021] like Figure 2 , Figure 3 As shown, the height adjustment pipe 2 consists of multiple telescopic pipe sections, including the main pipe 21 and the central pipe 22, which are connected to each other in a sleeve manner to form a relatively sliding connection.

[0022] A reducing sleeve 23 is provided at the connection between the main pipe 21 and the central pipe 22. Its upper end diameter matches the central pipe 22, and its lower end diameter matches the main pipe 21.

[0023] The shrink sleeve 23 is equipped with a compression locking mechanism 24, which is used to apply compression force to the main tube 21 and the central tube 22 in the radial direction to achieve reliable fixation.

[0024] The retractable sleeve 23 is provided with a transverse through groove 25, and a knob 26 is installed in the groove. The knob 26 is fixedly connected to the compression locking mechanism 24.

[0025] A bolt assembly 27 is provided inside the compression locking mechanism 24. The bolt assembly 27 includes a bolt 271 connected to the knob 26 and a nut 272 that cooperates with it.

[0026] When knob 26 is tightened, it drives bolt assembly 27 and clamping locking mechanism 24 to rotate synchronously. Bolt 271 and nut 272 interact, driving clamping locking mechanism 24 to move radially inward. Through clamping surface 29, clamping force is applied to main tube 21 and center tube 22, thereby achieving reliable locking. This structure prevents main tube 21 and center tube 22 from rotating or sliding relative to each other after locking.

[0027] In addition, the knob 26 is connected to the bolt assembly 27 via threads, and the outer surface of the knob 26 has an anti-slip embossed structure for easy tightening by the user. The nut 272 is embedded inside the reducing sleeve 23 and is fixed in place with the reducing sleeve 23.

[0028] The above structure can be used not only for adjusting the height of music score holders, but also for devices that require tubular locking, such as light stands and photography stands.

[0029] like Figures 4-5 As shown, the central base 3 is located at the bottom of the bracket and is used to connect and support the height adjustment tube 2, while also supporting at least three support legs 4.

[0030] The support leg 4 is rotatably connected to the central base 3 via a hinge mechanism to switch between an unfolded support state and an upward folded storage state.

[0031] To ensure stability when unfolded and ease of operation when folded, the hinge mechanism of the support leg 4 is equipped with a locking mechanism.

[0032] The locking mechanism includes: a movable block 41: located inside the support leg 4 and slidable axially, used to lock or release the extended state of the support leg; a locking pin 42: located inside the movable block 41, used to engage with the positioning hole 32 on the central base 3 to ensure the support leg is stably fixed when extended; an offset component 43: such as a return spring, used to automatically push the movable block 41 and the locking pin 42 into the positioning hole 32 when the support leg is extended, to achieve automatic mechanical locking; and an external operating component 44: a movable sleeve structure, fitted onto the outside of the support leg 4; when the user manually pulls the external operating component 44, it causes the movable block 41 to slide axially along the slide groove 46 provided on the support leg, causing the locking pin 42 to disengage from the positioning hole 32, thereby releasing the lock and allowing the support leg to fold.

[0033] In addition, a pressing pin 45 may be provided at the lower end of the movable block 41, passing through the external operating member 44, for assisting in controlling the folding and unfolding of the support leg. Both the pressing pin 45 and the locking pin 42 are provided on the movable block 41. In this embodiment, the locking pin 42 and the pressing pin 45 are positioned to intersect on the projection surface of the movable block 41.

[0034] This structure allows users to quickly switch the support leg status with one hand, without the need for additional tools.

[0035] Meanwhile, the offset component 43 adopts a reset spring design, which automatically resets and locks when the support leg is extended, ensuring the overall stability of the bracket.

[0036] In use, the user first adjusts the angle of the music score placement structure (1) as needed and fixes it to the upper end of the height adjustment tube (2) with a nut. Then, loosen the knob (26) to release the clamping locking mechanism (24) from the main tube (21) and the central tube (22), so that the length of the height adjustment tube (2) can be freely extended and retracted.

[0037] After adjusting to the appropriate height, the user tightens the knob (26), which drives the compression locking mechanism (24) to tighten radially through the bolt assembly (27), achieving a reliable lock between the main tube (21) and the central tube (22). The unfolding and retraction operation of the support leg (4) is as follows: The user pulls the external operating part (movable sleeve), which drives the movable block to slide, causing the locking pin to disengage from the positioning hole on the central base (3), and the support leg (4) can be folded upward; when the support leg (4) is unfolded again, the offset component (reset spring) pushes the movable block and the locking pin to reset, automatically locking into the positioning hole to achieve mechanical locking.

[0038] Through the above operations, users can easily complete the unfolding, fixing and storage of the stand, achieving stable support and quick adjustment. It realizes height adjustment, angle adjustment and quick folding storage of the support legs. The structure is compact and easy to operate, and it is especially suitable for portable performance and photography support applications.

[0039] In the description of the embodiments of this application, it should be noted that the terms "upper", "lower", "front", "rear", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0040] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An adjustable pipe fitting connection structure, characterized in that, include: The main pipe and the central pipe are connected by a socket, forming a relatively sliding connection. The reducing sleeve is installed at the connection between the main pipe and the central pipe, with its upper end diameter matching the central pipe and its lower end diameter matching the main pipe. A compression locking mechanism is disposed inside the retractable sleeve and is used to apply a compression force to the main tube and the central tube in the radial direction; A knob is installed in the transverse through groove of the retractable sleeve and is fixedly connected to the compression locking mechanism to drive the compression locking mechanism to rotate. A bolt assembly, disposed inside the compression locking mechanism, includes a bolt connected to a knob and a nut that engages with it. The rotation of the knob drives the compression locking mechanism to rotate, thereby causing the bolt assembly to engage with the nut during the rotation of the knob, thus pressing the main tube and the center tube together. The bolt assembly rotates integrally with the compression locking mechanism, and a double locking is achieved through the cooperation between the nut and the bolt.

2. The adjustable pipe fitting connection structure according to claim 1, characterized in that, The compression locking mechanism includes a compression surface. When the knob is tightened, it drives the compression locking mechanism to move inward, thereby applying a clamping force to the main tube and the central tube.

3. The adjustable pipe fitting connection structure according to claim 1, characterized in that, The knob is connected to the bolt assembly via a thread, and rotating the knob causes the bolt and the clamping and locking mechanism to rotate together.

4. The adjustable pipe fitting connection structure according to claim 1, characterized in that, The nut is a nut that is fitted into the reducing sleeve, and the nut and the reducing sleeve do not undergo relative displacement.

5. The adjustable pipe fitting connection structure according to claim 1, characterized in that, The knob is a knob with an anti-slip embossed structure.

6. The adjustable pipe fitting connection structure according to claim 1, characterized in that, Both the main pipe and the central pipe are axially movable pipe fittings.

7. The adjustable pipe fitting connection structure according to any one of claims 1 to 6, characterized in that, The adjustable tubular connection structure is used for tubular connections and height adjustment parts of music score holders, light stands, or photography stands.

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