Stably-connected aluminum plastic pipe

Abstract

The utility model discloses a stably-connected aluminum-plastic pipe which comprises a first aluminum-plastic pipe body, a second aluminum-plastic pipe body and a copper connector. Protruding parts with positioning holes are arranged at the ends, close to each other, of two nuts. A protruding square part is arranged on the peripheral side of the connector body, through holes corresponding to positioning holes of two nuts are formed in the two sides of the square part, positioning shafts are arranged at the two through holes in a telescopic mode, an arc-shaped metal elastic piece is arranged between the ends, close to each other, of the two positioning shafts, and an adjusting structure is arranged in the square part. The plastic-aluminum composite pipe has the advantages that when the first plastic-aluminum composite pipe body and the second plastic-aluminum composite pipe body are connected through the copper connector, after the nuts are in threaded connection in place, the deformation degree of the metal elastic pieces is adjusted through the adjusting structures, the metal elastic pieces drive the two positioning shafts to penetrate out of the through holes and then are embedded into the positioning holes, and therefore the plastic-aluminum composite pipe is convenient to use. And therefore, the two nuts are limited in the axial direction, threaded connection of the nuts is prevented from loosening, and the connection stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipelines, in particular to a firmly connected aluminum-plastic pipe. Background Art

[0002] Aluminum-plastic pipe is a new type of pipe made of a middle layer of longitudinally welded aluminum pipe, inner and outer layers of polyethylene plastic, and hot melt adhesive between layers. Polyethylene is a non-toxic, odorless plastic with good impact resistance, corrosion resistance, and weather resistance; the middle layer of longitudinally welded aluminum pipe gives the aluminum-plastic pipe the compressive strength and impact resistance of metal, making it easy to bend without rebounding. Aluminum-plastic pipe has two major characteristics: the strong pressure resistance of metal pipes and the acid and alkali resistance and corrosion resistance of plastic pipes. Due to its light weight, durability, convenient construction, and bendability, it is more suitable for use in home decoration.

[0003] Sometimes the laying length of the aluminum-plastic pipe is long. At this time, the length of a single aluminum-plastic pipe is difficult to meet the laying requirements, and it is necessary to connect and lengthen the two aluminum-plastic pipes through a joint. When the two aluminum-plastic pipes are connected through a copper joint, the end of the aluminum-plastic pipe is usually put on the plug-in pipe part of the copper joint, and then the nut and a locking sleeve with a notch are installed on the aluminum-plastic pipe. When the nut is tightened on the joint for threaded connection, the locking sleeve is deformed and clamped on the surrounding side of the aluminum-plastic pipe to achieve connection and fixation.

[0004] However, after being connected through a conventional copper joint, the nut connection may become loose due to the influence of water pressure during long-term use, which will cause water leakage. Utility Model Content

[0005] The utility model aims to provide a firmly connected aluminum-plastic pipe, which has the function of improving the stability.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: a stable connection type aluminum-plastic pipe, comprising a first aluminum-plastic pipe body, a second aluminum-plastic pipe body, and a copper joint connected between the first aluminum-plastic pipe body and the second aluminum-plastic pipe body, the copper joint comprising a joint body with two plug-in pipe parts, two locking sleeves with notches, and two nuts, and a protrusion with a positioning hole is provided at one end of the two nuts that are close to each other; a protruding square part is provided on the circumferential side of the joint body, and through holes corresponding to the positioning holes of the two nuts are provided on both sides of the square part, and positioning shafts are telescopically provided at the two through holes, and an arc-shaped metal spring is provided between the ends of the two positioning shafts that are close to each other, and an adjustment structure for adjusting the deformation degree of the metal spring to control whether the positioning shaft passes through the through hole and is embedded in the positioning hole.

[0007] The utility model is further configured as follows: two metal spring sheets are arranged between the ends of the two positioning shafts that are close to each other, and the arc-shaped protrusions of the two metal spring sheets protrude in directions away from each other. The adjustment structure drives the two metal spring sheets to deform in directions close to each other to drive the positioning shaft to pass through the through hole and then be embedded in the positioning hole.

[0008] The utility model is further configured as follows: the adjustment structure comprises two countersunk adjustment bolts which are threadedly connected to two sides of the square portion and whose ends respectively abut against the outside of the protruding parts of the two metal spring sheets.

[0009] The utility model is further configured as follows: a limiting groove is provided on one side of the two metal spring sheets which are away from each other, and one end of the countersunk adjusting bolt is embedded in the limiting groove.

[0010] The utility model is further configured as follows: a protective cover covering the positioning shaft and the metal spring is arranged on the square portion, and the protective cover and the square portion are connected by screws.

[0011] In summary, the beneficial effects of the utility model are:

[0012] 1. When the first aluminum-plastic pipe body and the second aluminum-plastic pipe body are connected through the copper joint, after the nut is threaded into place, the deformation degree of the metal spring is adjusted by the adjustment structure. The metal spring drives the two positioning shafts to pass through the through hole and then embed into the positioning hole, thereby limiting the two nuts along the axial direction to prevent the threaded connection of the nut from loosening and improve the stability of the connection;

[0013] 2. By setting two metal springs, and adjusting the structure to control the two metal springs to deform in a direction close to each other to drive the positioning shaft to pass through the through hole, the combination of the two metal springs can improve the stability of the two positioning shafts during extension and retraction;

[0014] 3. The adjustment structure includes two countersunk adjustment bolts which are threadedly connected to the two sides of the square part and whose ends respectively abut against the outer sides of the protruding parts of the two metal springs, so that the metal springs can be deformed in the process of the countersunk adjustment bolts gradually abutting against the metal springs; at the same time, a limiting groove is provided on the side where the two metal springs are away from each other, and one end of the countersunk adjustment bolt is embedded in the limiting groove to ensure that the countersunk adjustment bolt applies force to the middle part of the protruding part of the metal spring, which has the function of facilitating adjustment;

[0015] 4. A protective cover covering the positioning shaft and metal shrapnel is provided on the square part. The protective cover and the square part are connected by screws to ensure the coverage and protection of the positioning shaft and metal shrapnel, and also to ensure the aesthetics of the copper joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the copper joint in the utility model;

[0018] Figure 3 It is an exploded view of the local structure of the copper joint in the utility model.

[0019] Figure numerals: 1. First aluminum-plastic pipe body; 2. Second aluminum-plastic pipe body; 3. Copper joint; 4. Joint body; 41. Square part; 42. Through hole; 43. Positioning shaft; 431. Annular limit plate; 44. Metal spring; 441. Limit groove; 45. Adjustment structure; 451. Countersunk adjustment bolt; 46. Protective cover; 5. Locking sleeve; 6. Nut; 61. Protrusion; 62. Positioning hole. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0021] Embodiment: A firmly connected aluminum-plastic pipe, such as Figures 1 to 3 As shown, it includes a first aluminum-plastic pipe body 1, a second aluminum-plastic pipe body 2, and a copper joint 3 connected between the first aluminum-plastic pipe body 1 and the second aluminum-plastic pipe body 2. The copper joint 3 includes a joint body 4 with two plug-in pipe parts, two locking sleeves 5 with notches, and two nuts 6.

[0022] like Figure 2 and Figure 3 As shown, a protrusion 61 with a positioning hole 62 is provided at one end where two nuts 6 are close to each other; a protruding square portion 41 is provided on the peripheral side of the joint body 4, through holes 42 corresponding to the positioning holes 62 of the two nuts 6 are provided on both sides of the square portion 41, positioning shafts 43 are telescopically provided at the two through holes 42, an arc-shaped metal spring 44 is provided between the ends where the two positioning shafts 43 are close to each other, and an adjustment structure 45 for adjusting the deformation degree of the metal spring 44 to control whether the positioning shaft 43 passes through the through hole 42 and then is embedded in the positioning hole 62 is provided in the square portion 41. At the same time, an annular stopper 431 is provided on the peripheral side of the positioning shaft 43, which abuts against the inner side of the square portion 41 when embedded in the positioning hole 62.

[0023] like Figure 2 and Figure 3As shown, two metal springs 44 are arranged between the ends of the two positioning shafts 43 that are close to each other, and the arc-shaped protrusions of the two metal springs 44 protrude in the direction away from each other. The adjustment structure 45 drives the two metal springs 44 to deform in the direction of approaching each other so as to drive the positioning shafts 43 to pass through the through hole 42 and then be embedded in the positioning hole 62. The adjustment structure 45 includes two countersunk adjustment bolts 451 that are threadedly connected to both sides of the square portion 41 and whose ends respectively abut against the outer sides of the protrusions 61 of the two metal springs 44. A limiting groove 441 is arranged on the side of the two metal springs 44 that are away from each other, and one end of the countersunk adjustment bolt 451 is embedded in the limiting groove 441.

[0024] like Figure 2 and Figure 3 As shown, a protective cover 46 covering the positioning shaft 43 and the metal spring sheet 44 is provided on the square portion 41 , and the protective cover 46 and the square portion 41 are connected by screws.

[0025] Implementation effect: When the first aluminum-plastic pipe body 1 and the second aluminum-plastic pipe body 2 are connected through the copper joint 3, after the nut 6 is threaded into place, the deformation degree of the metal spring 44 is adjusted by the adjustment structure 45, and the metal spring 44 drives the two positioning shafts 43 to pass through the through hole 42 and then embed into the positioning hole 62, thereby limiting the two nuts 6 along the axial direction to prevent the threaded connection of the nut 6 from loosening and improve the stability of the connection.

[0026] By setting two metal springs 44, and the adjustment structure 45 controlling the two metal springs 44 to deform in the direction of approaching each other so as to drive the positioning shaft 43 to pass through the through hole 42, the combination of the two metal springs 44 can improve the stability of the two positioning shafts 43 when they are extended and retracted. The adjustment structure 45 includes two countersunk adjustment bolts 451 which are threadedly connected to the two sides of the square portion 41 and whose ends respectively abut against the outer sides of the protrusions 61 of the two metal springs 44, so that the metal springs 44 can be driven to deform in the process of the countersunk adjustment bolts 451 gradually abutting against the metal springs 44; at the same time, a limiting groove 441 is provided on the side where the two metal springs 44 are away from each other, and one end of the countersunk adjustment bolt 451 is embedded in the limiting groove 441 to ensure that the countersunk adjustment bolt 451 applies force to the middle part of the protrusion 61 of the metal spring 44, which has the function of facilitating adjustment.

[0027] A protective cover 46 covering the positioning shaft 43 and the metal spring 44 is provided on the square portion 41 . The protective cover 46 and the square portion 41 are connected by screws to ensure the coverage and protection of the positioning shaft 43 and the metal spring 44 and also ensure the aesthetics of the copper joint 3 .

[0028] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A connection-stable aluminum-plastic pipe, comprising a first aluminum-plastic pipe body (1), a second aluminum-plastic pipe body (2), and a copper joint (3) connected between the first aluminum-plastic pipe body (1) and the second aluminum-plastic pipe body (2), wherein the copper joint (3) comprises a joint body (4) having two plug-in pipe parts, two locking sleeves (5) having notches, and two nuts (6), characterized in that: A protruding portion (61) having a positioning hole (62) is provided at one end where the two nuts (6) are close to each other; a protruding square portion (41) is provided on the peripheral side of the joint body (4); through holes (42) corresponding to the positioning holes (62) of the two nuts (6) are provided on both sides of the square portion (41); positioning shafts (43) are telescopically provided at the two through holes (42); an arc-shaped metal spring sheet (44) is provided between the ends where the two positioning shafts (43) are close to each other; an adjusting structure (45) is provided in the square portion (41) for adjusting the deformation degree of the metal spring sheet (44) so ​​as to control whether the positioning shaft (43) passes through the through hole (42) and then is embedded in the positioning hole (62).

2. The firmly connected aluminum-plastic pipe according to claim 1, characterized in that: Two metal spring sheets (44) are arranged between the ends of the two positioning shafts (43) that are close to each other. The arc-shaped protrusions of the two metal spring sheets (44) protrude in directions away from each other. The adjustment structure (45) drives the two metal spring sheets (44) to deform in directions close to each other so as to drive the positioning shaft (43) to pass through the through hole (42) and then be embedded in the positioning hole (62).

3. The firmly connected aluminum-plastic pipe according to claim 2, characterized in that: The adjustment structure (45) comprises two countersunk adjustment bolts (451) which are threadedly connected to two sides of the square portion (41) and whose ends respectively abut against the outer sides of the protruding portions (61) of the two metal spring sheets (44).

4. The firmly connected aluminum-plastic pipe according to claim 3, characterized in that: A limiting groove (441) is provided on one side of the two metal spring sheets (44) that is away from each other, and one end of the countersunk adjustment bolt (451) is embedded in the limiting groove (441).

5. The firmly connected aluminum-plastic pipe according to claim 1, characterized in that: The square portion (41) is provided with a protective cover (46) covering the positioning shaft (43) and the metal spring sheet (44), and the protective cover (46) and the square portion (41) are connected by screws.

Images