A lever-type sleeve structure with a pressing slope and no solid pivot.

Abstract

This utility model is a lever-type tube sleeve structure with a pressing slope and no solid pivot, used to fix it to a pipe fitting. It includes: a tube sleeve with a pipe fitting receiving part and a notch, and two extension parts extending outward from both sides of the notch, each extension part having a through hole; a headed screw with a screw head and a screw rod; a nut; and a first lever with a first rotating end and a first operating end at both ends. The first rotating end has a first pressing part, a first fastener receiving part, two first included-angle steps, a first movable hole, and a first fastener inlet. The two sides of the first included-angle steps correspond to a first locking position and a first loosening position. A part of the pipe fitting is located in the pipe fitting receiving part. When the first operating end is in the locked state, the screw head is in the first locked position. The first pressing part moves away from the notch and presses against the pressing slope. The two sides of the notch move closer to each other, and the tube sleeve and the pipe fitting are fixed together.

Description

Technical Field

[0001] This utility model relates to a snap-on tube sleeve structure, and more particularly to a snap-on tube sleeve structure without a solid pivot and having a pressing slope. Background Technology

[0002] Existing lever-type sleeve structures typically have one opening and two extended walls. The outer side of one of these extended walls is the area pressed by the lever, which can be curved or flat. Regardless of its shape, the lever is rotated from the relaxed to the locked state by moving the pressing part of the lever from the position away from the opening towards the position closer to the opening. The lever is rotated around a solid shaft as its axis of rotation to achieve the locking or unlocking purpose. For example, in clamp-type sleeves used in telescopic tubes, the solid shaft, such as a pin, uses an eccentric structure and is placed horizontally across the opening. The lever does not swing. One end of the horizontal lever is connected to the lever by a pin. The lever and the horizontal lever can rotate relative to each other around the pin. The end of the lever near the horizontal lever is shaped like an ellipse. When the lever is rotated to the locked state, the major axis of the ellipse, i.e. the pressure part, will move towards the opening to push against the sleeve, causing the opening to narrow and the sleeve to clamp the inner tube. Conversely, when the lever is rotated to the loosened state, the major axis of the ellipse, i.e. the pressure part, will move away from the opening to loosen the sleeve. At this time, after the force of the pressure part pushing against the sleeve disappears, the opening widens and the sleeve loosens the inner tube. This method relies entirely on the distance between the pressure point and the axis to determine the degree of opening variation. If it is used in situations where the degree of opening variation is large, the opening extension wall and the horizontal bar need to be lengthened so that the pressure point of the buckle has enough room to rotate. Therefore, the overall outer dimensions of the sleeve become larger. Furthermore, after long-term use, the pin-type buckle will cause the pin to gradually detach from the buckle or the horizontal bar, resulting in structural instability. If the pin is not reset in time, it will fall off and cause the buckle and the horizontal bar to disintegrate. Utility Model Content

[0003] To overcome the problems of large external dimensions and structural disintegration caused by the falling off of solid pivot parts in existing lever-type sleeve structures, this utility model provides a lever-type sleeve structure without a solid pivot and with a pressing slope. The headed screw is located in the first fastener receiving part, and the screw head hangs on the first included-angle step. The headed screw and the first lever will not detach from each other. The screw rod passes through the first movable hole and the two through holes and is locked with the nut. The first pressing part is located in the receiving groove, and a portion of the tube is located in the tube receiving part. When the first operating end is in the locked state, the screw head is in the first locked position, and the screw rod and the first movable hole are in the locked position. The first pressing part moves away from the notch to press against the pressing slope. The extensions on both sides of the notch move closer to each other, and the sleeve and the tube are fixed together. When the first operating end is in the relaxed state... In the first relaxed position, the screw head is located in the first relaxed position, and the sleeve and the fitting can move relative to each other. By setting the receiving groove and the pressing slope in this invention, the length of the extension and the headed screw can be shortened. The pressing slope can greatly increase the variation range of the notch. Therefore, if the variation range of the notch is the same, the sleeve structure of this invention only needs to rotate the first buckle by a small angle, while the existing sleeve structure requires rotating the existing buckle by a large angle. In addition, when the first buckle is turned, the screw head swings between the first locked position and the first relaxed position. Correspondingly, the first pressing part moves away from or towards the notch to achieve the sleeve clamping or loosening of the fitting. The movement direction of the first pressing part of this invention relative to the notch is exactly opposite to that of the existing sleeve structure. The first buckle rotates around a virtual axis, not around a physical axis such as a pin as the existing buckle.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a buckle-type sleeve structure without a solid pivot and with a pressing slope, which can be used to fix a pipe fitting. Its features include: a sleeve having a pipe fitting receiving portion and a notch; two corresponding extension portions extending outwards along both sides of the notch; each extension portion having a through hole; and a receiving groove recessed on the outer side of one of the extension portions, the receiving groove having a bottom and a pressing slope; a headed screw including a screw head and a screw rod; a nut; and a first buckle, the first... The latch has a first rotating end and a first operating end at both ends. The first rotating end has a first pressing part, a first fastener receiving part, two first included-angle steps, a first movable hole, and a first fastener inlet. The first fastener receiving part is connected to the first movable hole and the first fastener inlet, respectively. The first movable hole can accommodate the screw. The inner walls on both sides of the first movable hole are respectively provided with the first included-angle steps, and the two sides of the first included-angle steps correspond to a first locking position and a first loosening position, respectively. The screw can be inserted through the first fastener inlet. The headed screw is located within the first fastener receiving portion, with the screw head hooked on the first included-angle step. The headed screw and the first buckle will not disengage. The screw rod passes through the first movable hole and the two through holes and is locked with the nut. The first pressing portion is located within the receiving groove, and a portion of the pipe fitting is located within the pipe fitting receiving portion. When the first operating end is in the locked state, the screw head is in the first locked position, the screw rod and the first movable hole are in a locked position, the first pressing portion moves away from the notch to press against the pressing slope, the extensions on both sides of the notch move closer to each other, and the sleeve and the pipe fitting are fixed together. When the first operating end is in the relaxed state, the screw head moves away from the first relaxed position, the screw rod and the first movable hole are in a relaxed position, the first pressing portion moves closer to the notch to disengage from the pressing slope, the extensions on both sides of the notch move away from each other, and the sleeve and the pipe fitting are movable relative to each other.

[0005] Preferably, the headed screw and the nut are interchanged.

[0006] The beneficial effects of this utility model are that by using the receiving groove to accommodate the first pressing part, the space required for the first rotating end to rotate is greatly reduced. Only a small angle of rotation of the first buckle is needed to significantly change the size of the notch. Furthermore, rotating the first buckle causes the screw head to swing between the first locking position and the first loosening position, thereby achieving the clamping or loosening of the pipe fitting by the sleeve. The first buckle rotates around a virtual axis, rather than rotating around a physical axis such as a pin as in existing buckles. This utility model can significantly reduce the space required for the rotation of the first buckle and reduce the use of physical shaft parts, reduce assembly time, increase production efficiency, and avoid the problem of physical rotating shaft parts falling off and causing structural disintegration. Attached Figure Description

[0007] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0008] Figure 1A This is a locking diagram of Embodiment 1 of the present invention;

[0009] Figure 1B This is a schematic diagram illustrating the relaxation process of Embodiment 1 of this utility model;

[0010] Figure 2 This is an exploded view of Embodiment 1 of the present invention;

[0011] Figure 3A This is an enlarged schematic diagram of the first angle of the first latch in Embodiment 1 of this utility model;

[0012] Figure 3B This is an enlarged schematic diagram of the second angle of the first buckle in Embodiment 1 of this utility model;

[0013] Figure 4 This is a schematic diagram of the sleeve according to Embodiment 1 of this utility model;

[0014] Figure 5A This is a schematic diagram of the side locking mechanism in Embodiment 1 of this utility model;

[0015] Figure 5B This is a side view of the first embodiment of the present invention.

[0016] Figure 6A This is a top-view diagram illustrating the locking mechanism of Embodiment 1 of this utility model;

[0017] Figure 6B This is a top-view diagram illustrating the relaxation of a first embodiment of the present invention.

[0018] Figure 7A This is Embodiment 1 of the present utility model. Figure 5A A cross-sectional view along line AA;

[0019] Figure 7B This is Embodiment 1 of the present utility model. Figure 5B A cross-sectional view along line BB;

[0020] Figure 8 This is an exploded view of Embodiment 2 of the present invention;

[0021] Figure 9 This is a schematic diagram illustrating the relaxation process in Embodiment 3 of this utility model;

[0022] Figure 10A This is an enlarged schematic diagram of the first angle of the second latch in Embodiment 4 of this utility model;

[0023] Figure 10B This is an enlarged schematic diagram of the second angle of the second latch in Embodiment 4 of this utility model;

[0024] Figure 10C This is an enlarged schematic diagram of the third angle of the second latch in Embodiment 4 of this utility model;

[0025] The reference numerals in the attached figures are explained as follows:

[0026] 1. Pipe fittings

[0027] 2. Pipe sleeve

[0028] 21 Pipe fitting receiving section

[0029] 22 gaps

[0030] 23 Extension

[0031] 231 Through Hole

[0032] 232 Receptacle

[0033] 2321 Bottom

[0034] 2322 Suppressing Slope

[0035] 3. Headed screws

[0036] 31 Screw head

[0037] 32 screw

[0038] 4 nuts

[0039] 5 First buckle

[0040] 51 First Rotating End

[0041] 511 First Suppression Division

[0042] 512 First Fastener Receiving Section

[0043] 513 First included angle step

[0044] 5131 First locking position

[0045] 5132 First Relaxation Position

[0046] 514 First movable hole

[0047] 515 First Fastener Entry Point

[0048] 52 First Operation Terminal

[0049] 6. External fittings

[0050] 7. Outer sleeve

[0051] 8 Second buckle

[0052] 81 Second Rotating End

[0053] 811 Second Suppression Division

[0054] 812 Second Fastener Receiving Section

[0055] 813 Second included angle step

[0056] 8131 Second locking position

[0057] 8132 Second Relaxation Position

[0058] 814 Second movable hole

[0059] 815 Second Fastener Inlet

[0060] 82 Second Operation Terminal Detailed Implementation

[0061] The following is based on Figures 1A to 10C This description illustrates one embodiment of the present invention. This description is not intended to limit the implementation of the present invention, but rather to represent one possible embodiment.

[0062] like Figures 1A to 7B As shown, this is a buckle-type pipe sleeve structure without a solid pivot and with a pressing slope according to Embodiment 1 of this utility model, which can be used to fix a pipe fitting 1, such as... Figure 1A and Figure 1B Its characteristic is: a tube sleeve 2, such as Figures 2 to 4The sleeve 2 has a fitting receiving portion 21 and a notch 22. Two corresponding extension portions 23 extend outwards from both sides of the notch 22. Each extension portion 23 has a through hole 231. One of the extension portions 23 has a recessed receiving groove 232 on its outer side. The receiving groove 232 has a bottom 2321 and a pressing ramp 2322. A headed screw 3 includes a screw head 31 and a screw rod 32. A nut 4; a first latch 5, as shown. Figure 3A and Figure 3B The first latch 5 has a first rotating end 51 and a first operating end 52 at both ends. The first rotating end 51 has a first pressing part 511, a first fastener receiving part 512, two first included-angle steps 513, a first movable hole 514, and a first fastener inlet 515. The first fastener receiving part 512 is connected to the first movable hole 514 and the first fastener inlet 515 respectively. The first movable hole 514 can accommodate the screw 32. The inner walls on both sides of the first movable hole 514 are respectively provided with the first included-angle steps 513. The two sides of the first included-angle steps 513 correspond to a first locking position 5131 and a first loosening position 5132 respectively; and wherein, as Figures 5A to 7B Through the first fastener inlet 515, the headed screw 3 is located within the first fastener receiving portion 512, and the screw head 31 is hooked on the first included-angle step 513. The headed screw 3 and the first buckle 5 will not disengage from each other. The screw rod 32 passes through the first movable hole 514 and the two through holes 231 and is locked with the nut 4. The first pressing portion 511 is located within the receiving groove 232, and a portion of the pipe fitting 1 is located within the pipe fitting receiving portion 21. When the first operating end 52 is in the locked state, the screw head 31 is located in the first locked position 5131. Figure 7A The screw 32 and the first movable hole 514 are in a locked position, the first pressing part 511 moves away from the notch 22 to press against the pressing slope 2322, the extensions 23 on both sides of the notch 22 are close to each other, and the sleeve 2 and the fitting 1 are fixed to each other; wherein, when the first operating end 52 is in the relaxed state, the screw head 31 is in the first relaxed position 5132, such as Figure 7BThe screw 32 and the first movable hole 514 are in a relaxed state relative to each other. The first pressing part 511 moves towards the notch 22 to relax the pressing slope 2322. The extensions 23 on both sides of the notch 22 are far apart from each other. The sleeve 2 and the fitting 1 are movable relative to each other. This invention utilizes the accommodating groove 232 and the pressing ramp 2322 to shorten the length of the extension 23 and the headed screw 3. The pressing ramp 2322 can significantly increase the variation range of the notch 22. Therefore, if the variation range of the notch 22 is the same, the sleeve structure of this invention only needs to rotate the first buckle 5 by a small angle, while the existing sleeve structure requires rotating the existing buckle by a larger angle. In addition, when the first buckle 5 is turned, the screw head 31 swings between the first locking position 5131 and the first loosening position 5132. Correspondingly, the first pressing part 511 moves away from or towards the notch 22 to achieve the clamping or loosening of the tube 1 by the sleeve 2. The direction of movement of the first pressing part 511 relative to the notch 22 in this invention is exactly opposite to that of the existing sleeve structure. The first buckle 5 rotates around a virtual axis, not around a physical axis such as a pin as the existing buckle.

[0063] like Figure 4 , Figure 7A and Figure 7B As shown, the receiving groove 232 of the present invention has a bottom 2321 and a pressing slope 2322. When the sleeve 2 and the fitting 1 are movable relative to each other, the first pressing part 511 is located in the receiving groove 232, close to or in contact with the bottom 2321. That is, the first pressing part 511 is already oriented towards the notch 22. Therefore, the length of the first pressing part 511 is not limited by the length of the extension part 23. When the fitting 1 is locked, it is only necessary to rotate the first pressing part 511 by a small angle to press against the pressing slope 2322. There is no need for a large angle of rotation. The slope of the pressing slope 2322 can have different shapes, such as a flat slope, a concave slope, a convex slope, or a stepped slope.

[0064] like Figure 8As shown, in Embodiment 2 of this utility model, the headed screw 3 and the nut 4 of Embodiment 1 are interchanged. The nut 4 is located within the first fastener receiving portion 512, passing through the first fastener inlet 515. The nut 4 is hung on the first included-angle step 513, and the nut 4 and the first buckle 5 will not detach from each other. The screw 32 passes through the two through holes 231 and the first movable hole 514 and is locked with the nut 4. The first pressing portion 511 is located within the receiving groove 232, and a portion of the pipe fitting 1 is located within the pipe fitting receiving portion 21. When the first operating end 52 is in the locked state, the nut 4 is in the first locked position 5131, and the screw 32 and the... When the first movable hole 514 is in a locked position, the first pressing part 511 moves away from the notch 22 to press against the pressing ramp 2322. The extensions 23 on both sides of the notch 22 move closer to each other, and the sleeve 2 and the fitting 1 are fixed together. When the first operating end 52 is in a relaxed position, the nut 4 is in the first relaxed position 5132, the screw 32 and the first movable hole 514 are in a relaxed position, the first pressing part 511 moves closer to the notch 22 to relax the pressing ramp 2322, the extensions 23 on both sides of the notch 22 move away from each other, and the sleeve 2 and the fitting 1 can move relative to each other. This embodiment illustrates that the first fastener receiving part 512 can also accommodate the nut 4. By turning the first latch 5, the nut 4 swings between the first locked position 5131 and the first relaxed position 5132 to achieve the effect of the sleeve 2 clamping or loosening the fitting 1.

[0065] like Figure 2 and Figure 8As shown, the headed screw 3 and nut 4 in Embodiments 1 and 2 of this utility model are used to connect the sleeve 2 and the first latch 5. Specifically, the screw 32, the screw heads 31 at both ends, and the nut 4 connect the first latch 5 and the two extensions 23 in series. The two ends of the screw 32 can be hooked onto the first included-angle step 513 and the through hole 231, respectively. The tightness is controlled by the distance between the screw heads 31 and the nut 4. Therefore, other parts with the same or similar functions as the screw heads 31, screw 32, and nut 4 can be selected as substitutes, and the use of this utility model is not limited to its specific application. The headed screw 3 and nut 4 described in this utility model are cost-effective and readily available, making them a preferred implementation. Unlike other existing buckles, they do not require custom-made special parts. Furthermore, the nut 4 and screw head 31 are hexagonal in shape, which is only one implementation method. They can also be other shapes, such as square, flat, round, polygonal, or others. The shape of the nut 4 and screw head 31 is not limited. The screw 32 is not limited to a cylindrical shape; it can be a strip of other shapes. The threads are not necessary but are determined by the way the substitute parts for the nut 4 and the screw 32 are combined.

[0066] like Figure 9 As shown, in Embodiment 3 of this utility model, there is an outer tube 6 and an outer tube sleeve 7. The outer tube 6 is sleeved on the outside of the tube 1 to form a telescopic tube with gaps between them. The outer tube sleeve 7 is connected to the tube sleeve 2. The outer tube 6 and the outer tube sleeve 7 are fixed to each other. When the first operating end 52 is in the locked state, the screw head 31 is in the first locked position 5131. The first pressing part 511 abuts against the pressing slope 2322. The extensions 23 on both sides of the notch 22 are close to each other. The tube 1 and the outer tube 6 are fixed to each other. When the first operating end is in the relaxed state, the screw head 31 is close to the first relaxed position 5132. The first pressing part 511 is away from the pressing slope 2322. The extensions 23 on both sides of the notch 22 are far away from each other. The tube 1 and the outer tube 6 can move relative to each other.

[0067] like Figure 4As shown, the pipe fitting 1 of this utility model is circular. The pipe fitting 1 can be replaced with other shapes of pipe fittings, such as square or triangular, or other objects, such as sheet-shaped, L-shaped or arc-shaped objects. The pipe fitting receiving part 21 can be replaced with the corresponding shape so that other objects or other shapes of pipe fittings can be placed in the pipe fitting receiving part 21. By rotating the first buckle 5, the pipe sleeve 2 and other objects or other shapes of pipe fittings can be made to be either non-slidable or slidable.

[0068] like Figure 3A , Figure 3B and Figures 10A to 10C As shown, these are Embodiment 1 and Embodiment 4 of this utility model. Figure 3B In Embodiment 1, the first movable hole 514 and the first fastener inlet 515 are located close to and connected on the first buckle 5. Other embodiments exist, such as setting the first movable hole 514 and the first fastener inlet 515 to the same hole position, or as... Figures 10A to 10C The second buckle 8 has a second rotating end 81 and a second operating end 82 at both ends. The second rotating end 81 has a second pressing part 811, a second fastener receiving part 812, two second included-angle steps 813, a second movable hole 814, and a second fastener inlet 815. The second included-angle steps are respectively provided with a second locking position 8131 and a second loosening position 8132. The second buckle 8 sets the second movable hole 814 and the second fastener inlet 815 on opposite surfaces and they pass through each other. The second pressing part 811 and the second movable hole 814 are located on the same side. The second fastener receiving part 812, the second included-angle steps 813, and the second fastener inlet 815 are located on the same side. The above description is only an illustration of different embodiments and does not limit their relative positional relationship. The first fastener inlet 515 and the second fastener inlet 815 are used to set the screw head 31 or the nut 4.

[0069] like Figure 7A and Figure 7B As shown, the screw 31 of this utility model passes through the two through holes 231 and is locked with the nut 4. The tightness can be adjusted by using the head screw 3 and the nut 4 according to the required reduction of the notch 22.

[0070] The above description and explanation are merely illustrative of preferred embodiments of the present utility model. Those skilled in the art may make other modifications based on the following defined scope of the patent application and the above description, but such modifications should still be included within the scope of the present utility model and in the spirit of its creation.

Claims

1. A lever-type pipe sleeve structure with a pressing ramp and no solid pivot, which can be used to fix a pipe fitting, characterized in that: A sleeve having a fitting receiving portion and a notch, the sleeve having two corresponding extension portions extending outward along both sides of the notch, each extension portion having a through hole, and one of the extension portions having a receiving groove recessed on its outer side, the receiving groove having a bottom and a pressing slope. A headed screw, comprising a screw head and a screw rod; One nut; A first latch, wherein the first latch has a first rotating end and a first operating end at both ends. The first rotating end has a first pressing part, a first fastener receiving part, two first included-angle steps, a first movable hole, and a first fastener inlet. The first fastener receiving part is connected to the first movable hole and the first fastener inlet respectively. The first movable hole can accommodate the screw. The inner walls on both sides of the first movable hole are respectively provided with the first included-angle steps. The two sides of the first included-angle steps correspond to a first locking position and a first loosening position respectively. Among them, through the first fastener inlet, the headed screw is located in the first fastener receiving part, the screw head is hung on the first included step, the headed screw and the first buckle will not disengage from each other, the screw rod passes through the first movable hole and the two through holes and is locked with the nut, the first pressing part is located in the receiving groove, and a part of the pipe is located in the pipe receiving part; When the first operating end is in the locked state, the screw head is in the first locked position, the relative position of the screw and the first movable hole is in the locked state, the first pressing part moves away from the notch to press the pressing slope, the extensions on both sides of the notch move closer to each other, and the sleeve and the fitting are fixed to each other. When the first operating end is in the relaxed state, the screw head is away from the first relaxed position, the screw and the first movable hole are in the relaxed state relative to each other, the first pressing part moves towards the notch to disengage from the pressing slope, the extensions on both sides of the notch move away from each other, and the sleeve and the fitting are movable relative to each other.

2. The lever-type sleeve structure with a pressing slope and no solid pivot as described in claim 1, characterized in that... The headed screw and the nut are interchanged.

Images