Two-section type expansion pipe
By designing a two-stage expansion tube, combined with the guide joint structure of the wing, twisted or trumped expansion tube, the problem of expansion tube adapting to different wall structures is solved, and the same expansion tube is suitable for multiple walls, improving the flexibility of decoration.
Patent Information
- Application Number
- CN202422258222.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-09-14
AI Technical Summary
The existing expansion tubes are difficult to adapt to walls with different internal structures, making it difficult for people with lack of experience to choose suitable expansion tubes.
A two-stage expansion tube is designed, including a first expansion expansion section and a second expansion expansion section connected in sequence. The first expansion expansion section is one of a wing-shaped, twisted or trumped expansion tube. The second expansion expansion section is another type different from the first expansion expansion section. By providing structures such as longitudinal expansion guide joints, twisted guidance joints and horn expansion guide joints, they are adapted to different wall structures.
The same expansion tube can adapt to solid walls and hollow walls at different locations, avoiding the inapplicability of expansion tubes and improving the selectivity and applicability during the decoration process.
Smart Images
Figure CN223257245U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of expansion tools, in particular to a two-section expansion pipe. Background Art
[0002] Expansion tubes are commonly used in walls to fasten and secure various hanging items, and are used in conjunction with self-tapping screws. Expansion tubes typically feature an expansion section. To install the expansion tube, a prefabricated hole is drilled into the wall, sized to match the tube's outer diameter. A tapping screw is then pressed into the expansion section of the tube, causing it to expand and fit tightly against the prefabricated hole in the wall, achieving the desired anchoring force.
[0003] However, existing walls are varied and have different internal structures. Therefore, the existing installation method is to use different types of expansion tubes for walls with different internal structures to achieve installation. Therefore, it is difficult for people who lack experience to choose a suitable expansion tube. Utility Model Content
[0004] In order to overcome the defects of the prior art, the utility model provides a two-section expansion pipe to solve the above problems.
[0005] The technical solution adopted by the present invention to solve its technical problems is: a two-section expansion tube, including a first expansion and expansion section and a second expansion and expansion section connected in sequence; the first expansion and expansion section is one of a wing-shaped expansion tube and a twist-shaped expansion tube, and the second expansion and expansion section is one of a wing-shaped expansion tube, a twist-shaped expansion tube and a trumpet-shaped expansion tube, wherein the type of the first expansion and expansion section and the type of the second expansion and expansion section are not repeated.
[0006] Preferably, the outer wall of the wing-shaped deployment tube is provided with a longitudinal expansion guide slit and a folding deployment guide slit in communication with each other, and the longitudinal expansion guide slit and the folding deployment guide slit both pass through the outer wall of the wing-shaped deployment tube and communicate with the first inner channel of the wing-shaped deployment tube;
[0007] The outer wall of the twist-shaped deployment tube is provided with a twist guide slot, and the twist guide slot passes through the outer wall of the twist-shaped deployment tube and communicates with the second inner channel of the twist-shaped deployment tube;
[0008] A trumpet-shaped expansion guide slit is provided on the outer wall of the trumpet-shaped expansion tube. The trumpet-shaped expansion guide slit passes through the outer wall of the trumpet-shaped expansion tube and is communicated with the third inner channel of the trumpet-shaped expansion tube.
[0009] Optionally, in the wing-shaped deployment tube, longitudinal expansion guide slits are provided on both sides of the folded deployment guide slit along the length direction of the wing-shaped deployment tube, and the width of the folded deployment guide slit is greater than the width of the longitudinal expansion guide slit.
[0010] Specifically, the torsion guide slot is a long hole extending along the length of the twist-shaped expansion tube, so as to divide the twist-shaped expansion tube into at least two torsion blocks.
[0011] It is worth noting that the trumpet expansion guide seam is a wave-shaped structure and extends toward a side of the trumpet expansion tube away from the twist-shaped expansion tube, so as to divide the trumpet expansion tube into at least two expansion blocks.
[0012] Optionally, an undercut groove is provided on the outer wall of the first expansion and expansion section and / or the outer wall of the second expansion and expansion section.
[0013] Preferably, a conical protrusion is provided in the undercut groove.
[0014] It is worth noting that the outer wall of the first expansion and expansion section and / or the outer wall of the second expansion and expansion section is provided with fins, and the height of the fins gradually decreases from the first expansion and expansion section to the second expansion and expansion section.
[0015] Specifically, a closed ring is provided on a side of the first expansion and expansion section away from the second expansion and expansion section to form an insertion opening, and a diameter of the insertion opening is larger than that of the first inner channel, the second inner channel and the third inner channel.
[0016] Optionally, an inlet abutment ring is provided on a side of the closed ring away from the first expansion and deployment section, and an outer diameter of the inlet abutment ring is greater than an outer diameter of the closed ring.
[0017] The beneficial effect of the present invention is that in the two-stage expansion tube, by setting the first expansion and expansion section and the second expansion and expansion section, it can be used with walls of different internal structures, such as solid walls, hollow walls with a hollow position in front, or hollow walls with a hollow position in the back. When applied to a hollow wall with a hollow position in the front, the first expansion and expansion section will be located in the hollow position to achieve expansion and expansion. When applied to a hollow wall with a hollow position in the back, the second expansion and expansion section will be located in the hollow position to achieve expansion and expansion. When applied to a solid wall, the first expansion and expansion section and the second expansion and expansion section will expand and support the inner wall of the brick body. Therefore, in actual decoration scenarios, consumers only need to purchase this expansion tube to cope with walls of different internal structures, thereby avoiding the situation where the purchased expansion tube is not suitable for the current wall. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic structural diagram of the first two-stage expansion tube of the utility model;
[0019] Figure 2 This is a schematic structural diagram of the second two-stage expansion tube of the utility model;
[0020] Figure 3 This is a schematic structural diagram of a third two-stage expansion tube of the present utility model;
[0021] Figure 4 This is a schematic structural diagram of a fourth two-stage expansion tube of the present utility model;
[0022] Figure 5 This is a cross-sectional view of a wing-shaped deployment tube in the AA direction in one embodiment of the present invention;
[0023] Figure 6 This is a cross-sectional view of a twist-shaped expansion tube in the BB direction in one embodiment of the present invention;
[0024] Figure 7 This is a cross-sectional view of a trumpet-shaped expansion tube in the CC direction in one embodiment of the present invention;
[0025] Figure 8 This is a schematic structural diagram of a twist-shaped expansion tube with an oblique hole-shaped twisting guide slot in one embodiment of the present invention;
[0026] Figure 9 This is a schematic structural diagram of a wing-shaped deployment tube and a twisted-shaped deployment tube with a V-shaped twisting guide seam in one embodiment of the present invention;
[0027] Figure 10 It is a structural schematic diagram of a trumpet-shaped expansion tube with a longitudinal strip trumpet expansion guide slot and a twisted-shaped expansion tube with an inverted V-shaped twisting guide slot in one embodiment of the present invention;
[0028] Figure 11 This is a schematic structural diagram of a wing-shaped deployment tube after being folded and deployed in one embodiment of the present invention;
[0029] Figure 12 This is a schematic diagram of the structure of the trumpet-shaped expansion tube after expansion in one embodiment of the present invention;
[0030] Figure 13 This is a structural diagram of a two-stage expansion tube applied to a hollow wall in one embodiment of the present invention;
[0031] In the figure: 1 wing-shaped deployment tube; 11 first inner channel; 12 longitudinal expansion guide seam; 13 folded deployment guide seam; 14 undercut groove; 141 horizontal groove wall; 142 inclined groove wall; 15 closed ring; 151 insertion port; 16 entrance abutment ring; 17 fin; 2 twisted deployment tube; 21 second inner channel; 22 torsion guide seam; 23 torsion block; 3 trumpet-shaped deployment tube; 31 third inner channel; 32 trumpet deployment guide seam; 33 deployment block; 34 conical protrusion; 4 dividing line; 5 first arrow; 6 second arrow; 7 third arrow; 8 fourth arrow; 9 brick body; 10 hollow position. DETAILED DESCRIPTION
[0032] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.
[0033] like Figure 1-12 As shown, a two-section expansion tube includes a first expansion and expansion section and a second expansion and expansion section connected in sequence; the first expansion and expansion section is one of a wing-shaped expansion tube 1 and a twist-shaped expansion tube 2, and the second expansion and expansion section is one of a wing-shaped expansion tube 1, a twist-shaped expansion tube 2 and a trumpet-shaped expansion tube 3, wherein the type of the first expansion and expansion section and the type of the second expansion and expansion section are not repeated; that is, when the first expansion and expansion section is the wing-shaped expansion tube 1, the second expansion and expansion section will not be the wing-shaped expansion tube 1, but one of the twist-shaped expansion tube 2 and the trumpet-shaped expansion tube 3.
[0034] In the two-stage expansion tube, by setting the first expansion and expansion section and the second expansion and expansion section, it can be used with walls of different internal structures, such as solid walls, hollow walls in front of the hollow position 10, or hollow walls behind the hollow position 10. When applied to a hollow wall in front of the hollow position 10, the first expansion and expansion section will be located at the hollow position 10 to achieve expansion and expansion. When applied to a hollow wall behind the hollow position 10, the second expansion and expansion section will be located at the hollow position 10 to achieve expansion and expansion. When applied to a solid wall, the first expansion and expansion section and the second expansion and expansion section will expand and support the inner wall of the brick body 9. Therefore, in actual decoration scenarios, consumers only need to purchase this expansion tube to cope with walls of different internal structures, thereby avoiding the situation where the purchased expansion tube is not suitable for the current wall.
[0035] It is worth noting that if Figure 1-5 As shown, the outer wall of the wing-shaped deployment tube 1 is provided with a longitudinal expansion guide seam 12 and a folding deployment guide seam 13 that are connected to each other. The longitudinal expansion guide seam 12 and the folding deployment guide seam 13 both pass through the outer wall of the wing-shaped deployment tube 1 and communicate with the first inner channel 11 of the wing-shaped deployment tube 1; Figure 13As shown, for a hollow wall, when the wing-shaped deployment tube 1 falls into the hollow position 10, after the wing-shaped deployment tube 1 penetrates into the hollow position 10, a part of the wing-shaped deployment tube 1 will be located in the brick body 9 of the wall, and a screw is locked into the expansion tube. After the screw enters the first inner channel 11, the longitudinal expansion guide seam 12 can be used to expand the wing-shaped deployment tube 1 so that a part of the front end of the wing-shaped deployment tube 1 is supported inside the wall. Then, after the screw enters the second inner channel 21, since the rear end of the wing-shaped deployment tube 1 is located in the hollow position 10 and has no support, the longitudinal expansion guide seam 12 and the folded deployment guide seam 13 cooperate with each other. Under the tightening action of the screw thread, the screw pulls the part of the expansion tube located in the hollow position 10 to move toward the front end of the wing-shaped deployment tube 1, and makes the position of the folded deployment guide seam 13 of the wing-shaped deployment tube 1 as the dividing line 4, so that the front end and the rear end of the wing-shaped deployment tube 1 are like Figure 5 The movement in the direction of the first arrow 5 or the second arrow 6 causes the folding to form a wing-shaped structure, thereby clamping the side wall of the brick body 9 near the hollow position 10 in the wall to achieve expansion and expansion;
[0036] like Figure 1 、 2 As shown in Figures 3, 4, and 6, the outer wall of the twist-shaped expansion tube 2 is provided with a torsion guide slot 22, and the torsion guide slot 22 passes through the outer wall of the twist-shaped expansion tube 2 and communicates with the second inner channel 21 of the twist-shaped expansion tube 2; for a hollow wall, when the twist-shaped expansion tube 2 falls into the hollow position 10, after the twist-shaped expansion tube 2 penetrates into the hollow position 10 and the screw enters the second inner channel 21, the torsion guide slot 22 can be used to expand the twist-shaped expansion tube 2 so that a part of the twist-shaped expansion tube 2 is supported inside the brick body 9 of the wall, and the part of the twist-shaped expansion tube 2 located at the hollow position 10 will be twisted into a twist shape due to the action of the torsion guide slot 22, thereby being clamped to the side wall of the brick body 9 near the hollow position 10 in the wall to achieve expansion and expansion;
[0037] like Figure 1 、 2As shown in Figures 3, 4, and 7, the outer wall of the trumpet-shaped expansion tube 3 is provided with a trumpet-shaped expansion guide slit 32, and the trumpet-shaped expansion guide slit 32 passes through the outer wall of the trumpet-shaped expansion tube 3 and communicates with the third inner channel 31 of the trumpet-shaped expansion tube 3. For a hollow wall, the trumpet-shaped expansion tube 3 can fall into the hollow position 10. After the trumpet-shaped expansion tube 3 penetrates into the hollow position 10 and the screw enters the third inner channel 31, the front part of the trumpet-shaped expansion tube 3 can expand through the trumpet-shaped expansion guide slit 32 to support the interior of the brick body 9 of the wall. As for the part of the trumpet-shaped expansion tube 3 located at the hollow position 10, due to the action of the trumpet-shaped expansion guide slit 32, the trumpet-shaped expansion tube 3 will be separated into a plurality of expansion blocks 33 and expanded to the surroundings with the third inner channel 31 as the center (as shown in FIG. Figure 5 The brick body 9 is expanded in the direction of the third arrow 7 and the fourth arrow 8 to form a trumpet shape, thereby being clamped on the side wall of the brick body 9 near the hollow position 10 in the wall to achieve expansion and expansion.
[0038] Of course, for a solid wall, when the first expansion and expansion section and the second expansion and expansion section are both located inside the brick body 9 of the wall, after the screws are driven in, the wing-shaped expansion tube 1, the twist-shaped expansion tube 2 and the trumpet-shaped expansion tube 3 will all expand and swell, thereby being tightened inside the brick body 9 of the wall.
[0039] Preferably, in the wing-shaped deployment tube 1, longitudinal expansion guide slits 12 are provided on both sides of the folding deployment guide slit 13 along the length direction of the wing-shaped deployment tube 1. In this way, the wing-shaped deployment tube 1 can be folded in half at both sides of the folding deployment guide slit 13, and the width of the folding deployment guide slit 13 is greater than the width of the longitudinal expansion guide slit 12. This ensures that the folding can be achieved with the position of the folding deployment guide slit 13 as the dividing line 4. The longitudinal expansion guide slit 12 can be a circular hole or a transverse strip hole.
[0040] The torsion guide slot 22 is a long hole. Figure 8 The inclined hole in Figure 9 V-shaped hole in the Figure 10 Preferably, the torsion guide slit 22 is Figure 1-3 A long hole extending along the length of the twist-shaped deployment tube 2 divides the tube into at least two torsion blocks 23. The torsion guide slits 22 weaken the firmness of the twist-shaped deployment tube 2, facilitating its deformation into the twist shape by the screws. Compared to oblique holes, inverted V-shaped holes, and V-shaped holes, the twist-shaped deployment tube 2 expands easily after the screw enters the second inner channel, facilitating screw insertion.
[0041] Specifically, the speaker expansion guide slot 32 is Figure 3 and Figure 4The wavy or Figure 10 The trumpet expansion guide slit 32 preferably has a wavy structure and extends toward the side of the trumpet expansion tube 3 away from the twist-shaped expansion tube 2, thereby dividing the trumpet expansion tube 3 into at least two expansion blocks 33. The trumpet expansion guide slit 32 weakens the firmness of the trumpet expansion tube 3, thereby facilitating the trumpet expansion tube 3's expansion into a trumpet shape with the screws. Compared to a longitudinal strip, the wavy trumpet expansion guide slit 32 allows the expansion blocks 33 to expand wider, thereby securing them more securely to the wall.
[0042] It is worth noting that the outer wall of the first expansion and expansion section and / or the outer wall of the second expansion and expansion section are provided with an undercut groove 14. The undercut groove 14 includes a horizontal groove wall 141 and an inclined groove wall 142. The horizontal groove wall 141 is perpendicular to the first inner channel 11 or the second inner channel 21, and the inclined groove wall 142 is inclined from the inside to the outside in the direction from the first expansion and expansion section to the second expansion and expansion section, that is, from the front to the back and from the inside to the outside. There will be a lot of debris in the hole drilled in the wall for the expansion tube to be inserted. The undercut groove 14 is used to form a shovel structure, which can push the debris to the bottom of the hole, making it easier to insert the front part of the expansion tube into the hole. Multiple undercut grooves 14 are arranged in sequence along the length direction of the first expansion and expansion section and / or the length direction of the second expansion and expansion section. After the undercut groove 14 near the rear end is filled with debris, the undercut groove 14 near the front end can be used to continue to push the debris.
[0043] Preferably, a conical protrusion 34 is provided in the undercut groove 14. For foam bricks, the conical protrusion 34 can be used to dig out a wavy structure on the wall of the brick body 9, thereby increasing the friction between the wall of the brick body 9 and the outer wall of the expansion tube.
[0044] It is worth noting that the outer wall of the first expansion and expansion section and / or the outer wall of the second expansion and expansion section is provided with fins 17, which can be used to insert into the wall surface of the foam brick to make the expansion tube more firmly in the wall, so that it will not rotate with the screw; the height of the fins 17 gradually decreases from the first expansion and expansion section to the second expansion and expansion section. Figure 1-4 As shown, the height of the fin 17 gradually decreases from the front end to the rear end, thus forming an inverted triangle, which has little resistance when inserted into the wall.
[0045] Preferably, Figure 1-4As shown, a closed loop 15 is provided on the side of the first expansion section away from the second expansion section to form an insertion opening 151. The diameter of the insertion opening 151 is larger than that of the first inner channel 11, the second inner channel 21, and the third inner channel 31. The provision of the closed loop 15 enhances the stability of the input end of the expansion tube, preventing the input end from being stretched and damaging the wall entrance. Furthermore, the diameter of the insertion opening 151 is the maximum inner diameter of the expansion tube to facilitate screw insertion.
[0046] Optionally, an inlet abutment ring 16 is provided on a side of the closed ring 15 away from the first expansion and deployment section. The outer diameter of the inlet abutment ring 16 is larger than the outer diameter of the closed ring 15. The outer diameter of the inlet abutment ring 16 is larger than the inlet of the wall, thereby preventing the entire expansion tube from being pushed into the wall and facilitating subsequent removal of the expansion tube.
[0047] It is worth noting that a shrinking ring 24 is provided between the first expansion and expansion section and the second expansion and expansion section, and the inner diameter of the shrinking ring 24 is smaller than the inner diameter of the first expansion and expansion section and the inner diameter of the second expansion and expansion section; Figure 1 and 13 As shown, when the first expansion and deployment section is in the hollow position 10, when the screw enters the shrinking ring 24, it will be very tight, ensuring that the screw can be tightened, thereby ensuring that the first expansion and deployment section can be deployed. After the screw head of the screw passes through the inside of the shrinking ring 24, a thread will be left inside the shrinking ring 24, thereby facilitating the passage of the part behind the screw head.
[0048] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.
Claims
1. A two-stage expansion pipe, characterized in that: It includes a first expansion and expansion section and a second expansion and expansion section connected in sequence; the first expansion and expansion section is one of a wing-shaped expansion tube and a twist-shaped expansion tube, and the second expansion and expansion section is one of a wing-shaped expansion tube, a twist-shaped expansion tube and a trumpet-shaped expansion tube, wherein the type of the first expansion and expansion section and the type of the second expansion and expansion section are not repeated.
2. The two-stage expansion pipe according to claim 1, characterized in that: The outer wall of the wing-shaped deployment tube is provided with a longitudinal expansion guide seam and a folding deployment guide seam which are connected to each other. The longitudinal expansion guide seam and the folding deployment guide seam both pass through the outer wall of the wing-shaped deployment tube and communicate with the first inner channel of the wing-shaped deployment tube. The outer wall of the twist-shaped deployment tube is provided with a twist guide slot, and the twist guide slot passes through the outer wall of the twist-shaped deployment tube and communicates with the second inner channel of the twist-shaped deployment tube; A trumpet-shaped expansion guide slit is provided on the outer wall of the trumpet-shaped expansion tube. The trumpet-shaped expansion guide slit passes through the outer wall of the trumpet-shaped expansion tube and is communicated with the third inner channel of the trumpet-shaped expansion tube.
3. The two-stage expansion pipe according to claim 2, characterized in that: In the wing-shaped deployment tube, longitudinal expansion guide slits are provided on both sides of the folded deployment guide slit along the length direction of the wing-shaped deployment tube, and the width of the folded deployment guide slit is greater than the width of the longitudinal expansion guide slit.
4. The two-stage expansion pipe according to claim 2, characterized in that: The twist guide slot is a long hole extending along the length of the twist-shaped expansion tube, so as to divide the twist-shaped expansion tube into at least two twist blocks.
5. The two-stage expansion pipe according to claim 2, characterized in that: The trumpet expansion guide seam is a wave-shaped structure and extends toward a side of the trumpet expansion tube away from the twist-shaped expansion tube, so as to divide the trumpet expansion tube into at least two expansion blocks.
6. The two-stage expansion pipe according to claim 1, characterized in that: An outer wall of the first expansion and deployment section and / or an outer wall of the second expansion and deployment section is provided with an undercut groove.
7. The two-stage expansion pipe according to claim 6, characterized in that: A conical protrusion is provided in the undercut groove.
8. The two-stage expansion pipe according to claim 1, characterized in that: The outer wall of the first expansion and expansion section and / or the outer wall of the second expansion and expansion section is provided with fins, and the height of the fins gradually decreases from the first expansion and expansion section to the second expansion and expansion section.
9. The two-stage expansion pipe according to claim 1, characterized in that: A closed ring is provided on one side of the first expansion and expansion section away from the second expansion and expansion section to form an insertion opening, and a diameter of the insertion opening is larger than that of the first inner channel, the second inner channel and the third inner channel.
10. The two-stage expansion pipe according to claim 9, characterized in that: An inlet abutting ring is provided on a side of the closed ring away from the first expansion and deployment section, and an outer diameter of the inlet abutting ring is larger than an outer diameter of the closed ring.