Enhanced flexible bourdon tube with three-layer composite structure

Abstract

The utility model discloses an enhanced flexible spring tube with a three-layer composite structure, which comprises a guide tube with a spring-shaped tubular structure and connecting tubes, the connecting tubes are integrally formed at two ends of the guide tube respectively, and the end parts of the connecting tubes are communicated with the guide tube; each of the conduit and the connecting pipe comprises a middle layer, the inner wall surface of the middle layer is provided with an inner layer, and the outer surface of the middle layer is provided with an outer layer; a three-layer composite structure is formed by the middle layer, the inner layer and the outer layer, the inner layer plays a role in enhancing the middle layer, the pressure of fluid acting on the middle layer can be dispersed, the situation that the middle layer bursts is avoided, and the outer layer plays a role in protecting the surface of the middle layer; according to the flexible bourdon tube, the inner tube, the outer tube and the buffer piece form a three-layer composite structure, the buffer piece can play a role in buffering and protecting the middle layer, the phenomenon that the middle layer is damaged or broken due to impact of external force is effectively prevented, and therefore the pressure resistance and the abrasion resistance of the flexible bourdon tube can be improved, and the service life of the flexible bourdon tube can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of bourdon tubes, in particular to a three-layer composite structure enhanced flexible bourdon tube. Background Technique

[0002] The bourdon tube is a kind of pipe tool, and its shape is a spring-like structure. The two ends of the bourdon tube are respectively connected to the water outlet end and the water-using end (such as a shower head or a faucet, etc.) of the water pipe. Users can pull the water-using end device at will, so that the distance and position between the two ends of the bourdon tube change at will, which is convenient for users to use.

[0003] The patent document with the existing publication number CN220792345U discloses a bourdon tube, which includes a bourdon tube body. The bourdon tube body includes a tube body and a decorative layer; the tube body is a spring-shaped tubular structure; the decorative layer is arranged on the outer side wall of the protective layer A, and the decorative layer is a metallic color coating. The decorative layer arranged on the outside of the bourdon tube plays a decorative role for the tube body. The metallic color coating gives the bourdon tube a metallic feeling, improves the grade of the bourdon tube visually, and makes the appearance of the bourdon tube more beautiful.

[0004] Although the above-mentioned bourdon tube can solve the corresponding technical problems, its structure is relatively simple, its compressive resistance is low, and it is prone to deformation and damage or even breakage under external force during use, thereby reducing the service life of the bourdon tube.

[0005] Therefore, a three-layer composite structure enhanced flexible bourdon tube is proposed. Content of the Utility Model

[0006] The purpose of the utility model is to provide a three-layer composite structure enhanced flexible bourdon tube to solve the problems raised in the above background technique.

[0007] In order to achieve the above purpose, the main technical solutions adopted by the utility model include:

[0008] A three-layer composite structure enhanced flexible bourdon tube, including:

[0009] A conduit and a connecting pipe in the shape of a spring-shaped tubular structure. One connecting pipe is integrally formed at each of the two ends of the conduit, and the end of the connecting pipe is communicated with the conduit;

[0010] Wherein, both the conduit and the connecting pipe include a middle layer, an inner layer is arranged on the inner wall surface of the middle layer, and an outer layer is arranged on the outer surface of the middle layer;

[0011] The middle layer includes an inner pipe and an outer pipe arranged in sequence from inside to outside. The inner wall of the inner pipe is fixedly connected to the outer surface of the inner layer. A buffer is arranged between the inner pipe and the outer pipe, and the outer pipe is arranged on the inner wall surface of the outer layer.

[0012] As a preferred technical solution, the buffer member includes a hollow cavity provided between the inner tube and the outer tube, and a first elastic member and a second elastic member are sequentially arranged in the inner cavity of the hollow cavity from the inside to the outside.

[0013] As a preferred technical solution, the inner tube, the outer tube, the first elastic member, and the second elastic member are all made of thermoplastic polyurethane rubber.

[0014] As a preferred technical solution, the first elastic member includes a first buffer rib provided in the inner cavity of the hollow cavity, and a plurality of first compression bars are integrally formed on the first buffer rib and are distributed at equal intervals in a ring shape, and the outer surface of the inner tube is connected to the first compression bars.

[0015] As a preferred technical solution, the second elastic member includes a second buffer rib provided in the inner cavity of the hollow cavity, and a plurality of second compression bars are integrally formed on the second buffer rib and are distributed at equal intervals in a ring shape. The number of the second compression bars is the same as that of the first compression bars, and the inner surface of the outer tube is connected to the second compression bars.

[0016] As a preferred technical solution, a first opening is provided on one side of the first compression bar facing the outer tube, a second opening is provided on one side of the second compression bar facing the inner tube, the first opening and the second opening are arranged in one-to-one correspondence, and a gap is formed between the first compression bar and the second compression bar.

[0017] As a preferred technical solution, the cross-sections of the first buffer rib and the second buffer rib are both circular rings, and the cross-sections of the first compression bar and the second compression bar are both circular rings.

[0018] As a preferred technical solution, the inner layer has a grid-like structure, and the inner layer is a high-strength polyester fiber inner layer.

[0019] As a preferred technical solution, the outer layer includes a decorative layer fixedly connected to the outer surface of the outer tube, and a wear-resistant layer is coated on the outer surface of the decorative layer.

[0020] As a preferred technical solution, the wear-resistant layer is a polyurethane wear-resistant layer.

[0021] The utility model at least has the following beneficial effects:

[0022] In this application, a three-layer composite structure is formed by the middle layer, the inner layer, and the outer layer. The inner layer strengthens the middle layer, can disperse the pressure of the fluid acting on the middle layer, and avoids the middle layer from bursting. The outer layer protects the surface of the middle layer. A three-layer composite structure is formed by the inner tube, the outer tube, and the buffer member. The buffer member can buffer and protect the middle layer, effectively preventing the middle layer from being damaged or broken due to external force impact, and thus helping to improve the compressive resistance, wear resistance, and service life of the flexible spring tube. Description of the Drawings

[0023] Figure 1 This is a three - layer composite structure enhanced flexible spring tube of the present utility model; it is a three - dimensional structure schematic diagram of the structure of the flexible spring tube.

[0024] Figure 2 This is a cross - sectional structure schematic diagram of the conduit of the three - layer composite structure enhanced flexible spring tube of the present utility model.

[0025] Figure 3 This is a cross - sectional structure schematic diagram of the middle layer of the three - layer composite structure enhanced flexible spring tube of the present utility model.

[0026] Figure 4 This is a cross - sectional structure schematic diagram of the outer layer of the three - layer composite structure enhanced flexible spring tube of the present utility model.

[0027] In the figure: 100, conduit; 200, connecting pipe; 300, middle layer; 310, inner pipe; 320, outer pipe; 330, buffer member; 331, hollow cavity; 332, first elastic member; 3321, first buffer rib; 3322, first compression bar; 333, second elastic member; 3331, second buffer rib; 3332, second compression bar; 334, gap; 400, inner layer; 500, outer layer; 510, decorative layer; 520, wear - resistant layer. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figures 1 - 4 , this embodiment provides a three - layer composite structure enhanced flexible spring tube, including: a conduit 100 and a connecting pipe 200 in a spring - shaped tubular structure. One connecting pipe 200 is integrally formed at each end of the conduit 100, and the end of the connecting pipe 200 is communicated with the conduit 100; both the conduit 100 and the connecting pipe 200 include a middle layer 300. An inner layer 400 is provided on the inner wall surface of the middle layer 300, and an outer layer 500 is provided on the outer surface of the middle layer 300; the middle layer 300 includes an inner pipe 310 and an outer pipe 320 arranged in sequence from the inside to the outside. The inner wall of the inner pipe 310 is fixedly connected to the outer surface of the inner layer 400. A buffer member 330 is provided between the inner pipe 310 and the outer pipe 320, and the outer pipe 320 is provided on the inner wall surface of the outer layer 500.

[0030] Among them, the buffer member 330 includes a hollow cavity 331 provided between the inner tube 310 and the outer tube 320. A first elastic member 332 and a second elastic member 333 are sequentially arranged in the inner cavity of the hollow cavity 331 from the inside to the outside. By adding the hollow cavity 331, a certain elastic deformation space can be allowed between the inner tube 310 and the outer tube 320, and it can withstand the impact of external forces.

[0031] Among them, the inner tube 310, the outer tube 320, the first elastic member 332, and the second elastic member 333 are all made of thermoplastic polyurethane rubber, which has excellent comprehensive properties such as high strength, high toughness, wear resistance, and oil resistance, and can effectively improve the strength of the flexible spring tube.

[0032] Among them, the first elastic member 332 includes a first buffer rib 3321 arranged in the inner cavity of the hollow cavity 331. A plurality of first compression bars 3322 are integrally formed on the first buffer rib 3321 and are evenly distributed in a ring shape at equal intervals. The outer surface of the inner tube 310 is connected to the first compression bars 3322.

[0033] Among them, the second elastic member 333 includes a second buffer rib 3331 arranged in the inner cavity of the hollow cavity 331. A plurality of second compression bars 3332 are integrally formed on the second buffer rib 3331 and are evenly distributed in a ring shape at equal intervals. The number of the second compression bars 3332 is the same as that of the first compression bars 3322. The inner surface of the outer tube 320 is connected to the second compression bars 3332.

[0034] Among them, a first opening is provided on one side of the first compression bar 3322 facing the outer tube 320, and a second opening is provided on one side of the second compression bar 3332 facing the inner tube 310. The first opening and the second opening are arranged in one-to-one correspondence, and a gap 334 is formed between the first compression bar 3322 and the second compression bar 3332. By using the first elastic member 332 and the second elastic member 333 in cooperation, it can withstand the impact of external forces and disperse and weaken the received pressure, improving the compressive performance of the flexible spring tube.

[0035] Among them, the cross-sections of the first buffer rib 3321 and the second buffer rib 3331 are both circular rings, and the cross-sections of the first compression bar 3322 and the second compression bar 3332 are both circular rings.

[0036] Among them, the inner layer 400 has a grid-like structure, and the inner layer 400 is a high-strength polyester filament inner layer.

[0037] Among them, the outer layer 500 includes a decorative layer 510 fixedly connected to the outer surface of the outer tube 320. The outer surface of the decorative layer 510 is coated with a wear-resistant layer 520, and the wear-resistant layer 520 is a polyurethane wear-resistant layer. Through the decorative layer 510, the overall aesthetics of the flexible spring tube can be improved. The wear-resistant layer 520 has extremely high wear resistance, good corrosion resistance and anti-permeability, which plays a protective role on the surface of the flexible spring tube and helps to improve the service life of the flexible spring tube.

[0038] The working principle of the present utility model is as follows: The inner layer 400, the middle layer 300 and the outer layer 500 are arranged in sequence from inside to outside. The inner layer 400 and the outer layer 500 respectively provide protection for the inner wall surface and the outer surface of the middle layer 300. By arranging the inner tube 310, the buffer member 330 and the outer tube 320 in sequence from inside to outside, there is a certain elastic deformation space between the inner tube 310 and the outer tube 320 through the hollow cavity 331. There is a certain elastic deformation space between the first elastic member 332 and the second elastic member 333 through the gap 334. The first elastic member 332 and the second elastic member 333 can withstand the impact of external forces and disperse and weaken the pressure received, effectively protecting the middle layer 300 from being damaged by extrusion and improving the compressive performance of the flexible spring tube.

[0039] Parts not involved in the present utility model are the same as or can be implemented by using the prior art. Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A three-layer composite structure reinforced flexible spring tube, characterized in that: include: A spring-shaped tubular structure conduit (100) and a connecting tube (200), wherein the connecting tube (200) is integrally formed at both ends of the conduit (100), and the end of the connecting tube (200) is connected to the conduit (100), wherein: The conduit (100) and the connecting tube (200) both include a middle layer (300), an inner layer (400) is provided on the inner wall surface of the middle layer (300), and an outer layer (500) is provided on the outer surface of the middle layer (300); The middle layer (300) comprises an inner tube (310) and an outer tube (320) which are arranged in sequence from the inside to the outside, the inner wall of the inner tube (310) is fixedly connected to the outer surface of the inner layer (400), a buffer (330) is provided between the inner tube (310) and the outer tube (320), and the outer tube (320) is arranged on the inner wall surface of the outer layer (500).

2. The three-layer composite structure reinforced flexible spring tube according to claim 1 is characterized in that: The buffer member (330) comprises a hollow cavity (331) arranged between the inner tube (310) and the outer tube (320), and the inner cavity of the hollow cavity (331) is provided with a first elastic member (332) and a second elastic member (333) in sequence from the inside to the outside.

3. The three-layer composite structure reinforced flexible spring tube according to claim 2 is characterized in that: The inner tube (310), the outer tube (320), the first elastic member (332) and the second elastic member (333) are all made of thermoplastic polyurethane rubber.

4. The three-layer composite structure reinforced flexible spring tube according to claim 2 is characterized in that: The first elastic member (332) comprises a first buffer rib (3321) arranged in the inner cavity of the hollow cavity (331), a plurality of first anti-compression strips (3322) equidistantly distributed in an annular shape are integrally formed on the first buffer rib (3321), and the outer surface of the inner tube (310) is connected to the first anti-compression strips (3322).

5. The three-layer composite structure reinforced flexible spring tube according to claim 4 is characterized in that: The second elastic member (333) comprises a second buffer rib (3331) arranged in the inner cavity of the hollow cavity (331); a plurality of second anti-compression strips (3332) equidistantly distributed in an annular shape are integrally formed on the second buffer rib (3331); the number of the second anti-compression strips (3332) is the same as that of the first anti-compression strips (3322); and the inner surface of the outer tube (320) is connected to the second anti-compression strips (3332).

6. The three-layer composite structure reinforced flexible spring tube according to claim 5 is characterized in that: The first anti-compression strip (3322) is provided with a first opening on the side facing the outer tube (320), and the second anti-compression strip (3332) is provided with a second opening on the side facing the inner tube (310). The first opening and the second opening are arranged in a one-to-one correspondence, and a gap (334) is formed between the first anti-compression strip (3322) and the second anti-compression strip (3332).

7. The three-layer composite structure reinforced flexible spring tube according to claim 6 is characterized in that: The cross-sections of the first buffer rib (3321) and the second buffer rib (3331) are both circular ring-shaped, and the cross-sections of the first anti-compression strip (3322) and the second anti-compression strip (3332) are both circular ring-shaped.

8. The three-layer composite structure reinforced flexible spring tube according to claim 1 is characterized in that: The inner layer (400) has a grid-like structure, and the inner layer (400) is a high-strength polyester yarn inner layer.

9. The three-layer composite structure reinforced flexible spring tube according to claim 1, characterized in that: The outer layer (500) comprises a decorative layer (510) fixedly connected to the outer surface of the outer tube (320), and the outer surface of the decorative layer (510) is coated with a wear-resistant layer (520).

10. The three-layer composite structure reinforced flexible spring tube according to claim 9, characterized in that: The wear-resistant layer (520) is a polyurethane wear-resistant layer.

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