WO2019169537A1

WO2019169537A1 - Internal-shoring clamping hoop, corresponding pipeline, pipeline connection system, and pipeline connection method

Info

Publication number: WO2019169537A1
Application number: PCT/CN2018/078061
Authority: WO
Inventors: 于德跃
Original assignee: 于德跃
Priority date: 2018-03-05
Filing date: 2018-03-05
Publication date: 2019-09-12

Abstract

Disclosed are an internal-shoring clamping hoop, a corresponding pipeline, a pipeline connection system, and a pipeline connection method. A clamping hoop (3) comprises a hoop ring (31), a connector part (32) and an adjusting part (33), wherein the hoop ring (31) encloses to form a ring, the ring has a first end (A) and a second end (B), and the first end (A) is fixedly connected to the connector part (32); the second end (B) penetrates into the connector part (32); the connector part (32) is provided with a channel allowing the hoop ring (31) to penetrate; and at least one part of the adjusting part (33) is arranged on the connector part (32) to adjust the length by which the second end (B) penetrates into the connector part (32). The clamping hoop (3) can further comprise a locking part (4). An elastic inner pipe (2) can be connected in an outer pipe (1) in an internal-shoring manner, and the advantages of being convenient to use and a good universality are achieved.

Description

Internal support clamp, corresponding pipeline, pipeline connection system and pipeline connection method

Technical field

The invention relates to the connection of pipelines, in particular to an inner support clamp for pipeline connection, a pipeline including the inner clamp clamp, a pipeline connection system and a pipe adopting the inner clamp type clamp Road connection method.

Background technique

For the connection of pipelines, there are various connection methods and corresponding connection mechanisms in the prior art. As shown in Fig. 1, a common method is to provide an external thread at one end of one of the pipes, and a sleeve on the other pipe, the inner wall of the sleeve has an internal thread that is screwed with the external thread. The two pipes are connected by the casing. However, this type of connection requires that the interconnected pipes have a specific structure and size, otherwise an effective connection cannot be made.

Another type of connection structure is the outer clamp shown in the utility model publication No. CN202195172U. Referring to FIG. 2A and FIG. 2B, a special pipe clamp for an intake and exhaust system, that is, an outer clamp, includes a plastic liner 101, and a plastic ring liner 101 is externally provided with a fastening ring mechanism. The fastening ring mechanism includes a collar 102 sleeved on the outside of the plastic liner 101. The collar 102 is provided with a stud fastener 103, and the stud fastener 103 is provided with a fastening hole provided on the collar 102. Cooperate. Furthermore, as can be seen from Figure 2B, the stud fasteners are arranged in a tangential direction along the circumference of the collar. When the outer tube and the inner tube are connected by using the outer clamp, the outer clamp needs to be sleeved on the outer circumference of the elastic outer tube, so that the outer tube clamps the inner tube. This does not apply to the case where the outer tube is not a flexible pipe. Moreover, since the outer clamp protrudes outward from the outer tube, affecting the overall shape of the pipe connection, it may cause inconvenience or lack of aesthetics.

For this reason, it is highly desirable in the industry to develop a new pipe connection method and corresponding structure that can be applied to a non-elastic outer pipe without affecting the overall shape of the pipe connection.

Summary of the invention

(1) Technical problems to be solved

SUMMARY OF THE INVENTION The present invention is directed to solving the problem that the conventional pipe connection method is difficult to handle for a pipe having no specific structure and size, and that the inelastic outer pipe cannot be effectively connected to the inner pipe.

(2) Technical plan

In order to solve the above technical problem, the present invention provides an inner support type clamp comprising a hoop, a joint portion and an adjusting member, the hoop ring being formed into an annular shape having a first end and a second end. The first end is fixedly connected to the joint portion; the second end penetrates into the joint portion; the joint portion has a passage through which the hoop can pass; the adjusting member is disposed in the joint portion for adjusting the The second end penetrates the length of the joint portion.

According to a preferred embodiment of the present invention, the joint portion is tubular having both ends open, and the first end of the hoop is fixed to a side wall of one end of the joint portion.

According to a preferred embodiment of the invention, the adjusting member is a cylindrical workpiece, the two ends of which are rotatably hinged to the side walls of the joint portion, respectively.

According to a preferred embodiment of the invention, the adjustment member is perpendicular to the plane in which the circle encircled by the hoop is located.

According to a preferred embodiment of the present invention, the adjusting member includes a rotating shaft, and a plurality of toothed tabs are disposed along an outer circumference thereof in a middle portion of the rotating shaft; and a plurality of adjusting holes are disposed at one side of the second end of the hoop The shape and spacing of the adjustment holes cooperate with the plurality of toothed tabs of the adjustment member.

According to a preferred embodiment of the invention, a drive motor is also included, the spindle being driven by the drive motor.

According to a preferred embodiment of the invention, the drive motor is controlled by means of a remote control.

According to a preferred embodiment of the invention, the drive motor drives the spindle via a timing gear set.

According to a preferred embodiment of the invention, the gear wheel of the speed control gear set is locked or unlocked by a locking jaw.

According to a preferred embodiment of the invention, the locking cymbal is driven by an electromagnetic force.

According to a preferred embodiment of the present invention, the rotating shaft has a card slot near the two ends thereof, and the card slot is for engaging with the side wall of the joint portion.

According to a preferred embodiment of the present invention, one end surface of the rotating shaft is provided with a groove through which an external tool can rotate the rotating shaft to operate the adjusting member.

According to a preferred embodiment of the invention, a locking member is also provided, which is capable of locking the second end of the hoop relative to the joint portion.

According to a preferred embodiment of the present invention, the locking member includes a body including a bent portion on both sides and a flat portion in the middle, and the two bent portions penetrate the first portion of the hoop through the joint portion In the adjustment hole provided on the two end sides.

According to a preferred embodiment of the present invention, the inner side of the bent portion is respectively provided with a protrusion, and when the bent portion penetrates the adjustment hole, the gap between the protrusion and the flat portion just receives the joint The lower side of the part.

According to a preferred embodiment of the invention, the locking member interferes with the toothed paddle such that the adjustment member can only move in a direction that increases the circumference of the hoop.

According to a preferred embodiment of the present invention, the locking member includes a locking pin, a stopper and a tension spring; one end of the locking pin is hinged to the inner side wall of the joint portion through the pin shaft, and the other end extends To the rotating shaft edge of the adjusting member; the stopper is disposed on one side of the locking pin to block the rotation of the locking pin in one direction.

According to a preferred embodiment of the invention, a tension spring is attached to the locking pin for pulling the locking pin back to the locked position.

According to a preferred embodiment of the invention, the stop can be adjusted in a locked position and an unlocked position, in which it does not block the rotation of the locking member.

According to a preferred embodiment of the present invention, the inner side wall of the joint portion and the outer surface of the second end of the hoop are provided with a mating one-way motion locking structure, the one-way locking structure making the second end of the hoop only It can move in the direction in which the joint portion is pulled out.

According to a preferred embodiment of the present invention, the inner side of the left and right side walls of the joint portion is provided with a reed which protrudes toward the inner side of the joint portion, and divides the inner space of the joint portion into upper and lower halves, The second end of the hoop can pass over the reed after entering the lower half and enter the upper half, and under the blocking of the reed, the second end can closely fit to the upper side of the joint The inner wall of the wall.

According to a preferred embodiment of the present invention, the position of the hoop near the second end is provided with a first blocking block protruding toward the center of the hoop, and the outer side wall of the joint portion is provided with a first protruding toward the center of the hoop Two blocking blocks.

According to a preferred embodiment of the invention, the hoop comprises an elastic compensating mechanism.

According to a preferred embodiment of the invention, the elastic compensation mechanism is a prefabricated corrugated structure.

According to a preferred embodiment of the invention, a protective sleeve surrounding the hoop and the joint portion is further included.

The invention also provides a pipeline connection system, comprising an outer tube, an inner tube and an inner support type clamp, the inner tube has elasticity, and at least a part of the inner tube is sleeved in the outer tube, the inner support card A hoop is disposed within the inner tube and is disposed within a portion of the outer tube for outwardly extending from the portion of the inner tube such that the inner tube is in intimate contact with the outer tube.

According to a preferred embodiment of the invention, the inner tube is integrated with the inner support clamp, and the inner support clamp is fixed to the inner side wall of the inner tube.

The invention also provides a pipeline connection system, an elastic pipeline, characterized in that an inner support clamp is fixed on the inner wall thereof.

The invention also provides a pipeline connection system, a pipeline connection method for tightly connecting an elastic inner tube with an outer tube, the method comprising: at least a part of the inner tube Provided in the outer tube; an inner support type clamp is disposed in the inner tube portion of the inner tube; adjusting the circumference of the inner support type clamp to make the inner tube The inner tube is slid open so that the inner tube is in close contact with the outer tube, wherein the inner ferrule is the inner ferrule of any one of claims 1 to 25.

(3) Beneficial effects

The invention can realize the connection of the elastic inner tube into the outer tube in an inner support manner, and has the advantages of convenient use and good versatility. Moreover, the present invention does not damage the external structure of the pipe, and is suitable for occasions having special requirements for the appearance of the pipe and the external structure.

DRAWINGS

1 is a schematic view of a prior art pipeline structure connected by screwing;

2A and 2B are schematic views showing a pipe connection structure based on an outer clamp according to the prior art;

Figure 3 is a schematic view showing the installation of the inner support type clamp in the pipe connection system of the present invention;

Figures 4 and 5 show the working principle of the pipe connection system of the present invention;

6 is a schematic structural view of an inner bracket type clamp having an adjusting member according to an embodiment of the present invention;

Figure 7 is a cross-sectional view taken along the dashed line in Figure 6;

Figure 8 is a top plan view showing the structure of the embodiment shown in Figure 6;

Figure 9 is a front elevational view showing the overall structure of the adjusting member of the embodiment shown in Figure 6;

Figure 10 is a right side view of Figure 9;

Figure 11 is a schematic view of an inner stay type clamp having a lock member according to a second embodiment of the present invention;

Figure 12 is a schematic view showing the structure of the lock member of Figure 11;

13 and FIG. 14 are schematic views of an inner stay type clamp having a lock member according to a third embodiment of the present invention, which respectively show an operation state of the adjuster at different positions;

Fig. 15 is a view showing the structure of the adjustable state of the stopper processing in the third embodiment of the present invention.

Figure 16 is a schematic view of a hoop portion of an inner support type clamp having an elastic compensating mechanism in a fourth embodiment of the present invention;

Figure 17 is a schematic view of a motor-driven inner bracket according to a fifth embodiment of the present invention;

Figure 18 is a bottom view of Figure 17;

19 and 20 show views of the locking catch 351 in both the embedded and the slide-out states;

Figure 21 is a schematic view of a self-locking inner stay type clamp according to a sixth embodiment of the present invention;

Figure 22 is a cross-sectional view taken along the broken line in Figure 21;

Figure 23 is an enlarged view of a partial area of Figure 22;

24 and 25 show a cross-sectional view along the broken line of Fig. 22,

Figure 26 is a schematic view of an inner stay type clamp having a protective cover according to a seventh embodiment of the present invention;

Figure 27 is a schematic view showing a piping connection system in which an inner tube and a clamp are integrated according to an eighth embodiment of the present invention.

Detailed ways

In order to solve the aforementioned technical problems, the present invention proposes a pipe connection method based on an internal clamp type and a corresponding structure. Figure 3 is a schematic view showing the installation of the inner ferrule in the pipe connection system of the present invention. As shown in FIG. 3, the pipe connection system comprises an outer pipe 1, an inner pipe 2 and an inner support type clamp 3. The outer pipe 1 may be made of a non-elastic material such as metal, hard plastic or the like, and the inner pipe 2 has elasticity. , for example, a hose. At least a portion of the inner tube 2 is sleeved in the outer tube 1. The inner ferrule 3 is located within the portion of the inner tube 2 that is sleeved in the outer tube 1.

Figures 4 and 5 show the operation of the pipe connection system of the present invention. As shown in FIG. 4, the diameter of the inner tube 2 is slightly smaller than the diameter of the outer tube 1, so that the inner tube 2 can be inserted into the outer tube 1. After at least a portion of the inner tube 2 is inserted into the outer tube 1, the inner ferrule 3 is placed in the inner tube 2 and placed in a portion where the inner tube overlaps the outer tube. Next, as shown in FIG. 5, the inner stay type clamp 3 is adjusted so that its circumference becomes long, and the hoop diameter becomes large. Since the inner tube has elasticity, the inner stay type clamp 3 will be from the inside of the inner tube 2 This portion of the inner tube 2 is flared outwardly so that the portion of the inner tube 2 is brought into close contact with the outer tube 1.

The specific structure of the inner ferrule of the present invention will be specifically described below. As shown in FIG. 6, the inner ferrule includes a hoop 31, a joint portion 32, and an adjustment member 33. The hoop 31 is a flat strip-shaped workpiece and is formed into an annular shape. The ring includes a first end A and a second end B. The end of the first end A forms a joint portion 32, or the first end A is fixed. On the joint portion 33. In the specific implementation, the hoop 31 may be formed of a metal having sufficient strength and ductility such as steel or aluminum alloy, or may be formed of a polymer material such as plastic. The joint portion 32 and the hoop 31 may be integrally formed, or may be fixed by welding or the like.

In the embodiment shown in FIG. 6, the joint portion 32 is tubular with both ends open, and the first end A of the hoop 31 is fixed to the side wall of one end of the tubular joint portion 32. Thereby, the second end B of the hoop 31 is bent into the inside from the other end of the tubular joint portion 32, and can also pass through from the other end to partially overlap the first end A of the hoop 31. As a special embodiment, the second end B of the hoop only penetrates into the tubular joint portion 32 and is received in the tubular joint portion 32, and the portion of the joint portion 32 near the A end can be closed.

That is, the joint portion 32 of the present invention has a passage through which the hoop 31 can be inserted. However, the present invention does not limit the specific shape of the tubular joint portion 32, and the tubular shape may be either a round tube or a square tube. In the specific embodiment shown in Figs. 6 and 7, it can be seen from the figure that the joint portion 32 is a square tube having a rectangular cross section.

According to a preferred embodiment of the invention, an adjustment member 33 is provided in the joint portion 32 for adjusting the length at which the second end B penetrates the joint portion 32, thereby changing the circumference of the clamp. The structure and working principle of the adjusting member 33 will be specifically described below.

6 to 10 show the structure of the inner stay type clamp and its adjusting member 33 according to an embodiment of the present invention. 6 to FIG. 8 are a structure in which an adjusting member is mounted on an inner bracket type clamp, FIG. 6 is a front view, FIG. 7 is a cross-sectional view along a broken line in FIG. 6, and FIG. 8 is a top view of the structure shown in FIG. Fig. 9 is a front view showing the entire structure of the adjusting member of the embodiment, and Fig. 10 is a right side view of Fig. 9.

As shown in FIGS. 6 to 8, the adjusting member 33 is a cylindrical workpiece, and its both ends are rotatably hinged to one side wall of the tubular joint portion 32 so as to be entirely perpendicular to the annular plane surrounded by the hoop 31. . The second end B of the hoop 31 penetrates into the tubular joint portion 32 from the upper gap of the adjusting member 33.

As shown in FIGS. 9 and 10, the adjusting member 33 includes a cylindrical rotating shaft 331, and a plurality of toothed tabs 332 are provided along the outer circumference thereof in the middle portion of the rotating shaft 331. In this embodiment, the number of the tabs 332 is six, but the present invention is not limited thereto, and the number thereof may be any number of four or more. In addition, there are respectively a card slot 334 at both ends of the rotating shaft 331 for engaging with the side wall of the joint portion, so that the rotating shaft rotates relative to the side wall. The portions of the adjusting member 33 may be integrally formed or may be formed by a plurality of partial segments. A groove 333 may be provided on one end surface of the rotating shaft 331 so that the external tool rotates the rotating shaft by the rotation of the fitting groove 333 to operate the adjusting member 33. The shape of the groove 333 is not limited to the one-line shape shown in FIG. 10, and may be a cross shape, a hexagon shape, or the like.

Referring to FIG. 8 again, in order to cooperate with the adjusting member 33, a plurality of adjusting holes 315 are provided on one side of the second end B of the hoop 31, and the shape, the spacing thereof and the plurality of toothed tabs 332 of the adjusting member 33 are provided. The shape and the spacing are matched. Therefore, when the adjusting member 33 is rotated, the toothed tab 332 is just snapped into the adjusting hole 315, and the second end B of the hoop 31 is moved forward and backward along the circumference thereof, thereby adjusting The circumference of the clamp realizes the tightness adjustment of the inner clamp of the pipe.

Figure 11 is a schematic view of an inner stay type clamp having a lock member according to a second embodiment of the present invention, and Figure 12 is a schematic view showing the structure of the lock member of the embodiment. A locking member is used to lock the second end B of the hoop relative to the joint portion 32. As shown in Fig. 12, the lock member 4 includes a body having a sheet-like structure in which both ends are bent by about 90 degrees, that is, a bent portion 43 including both sides and a flat portion 41 at the center. As shown in FIG. 11, the two bent portions 43 pass through the joint portion 32 and respectively penetrate into the adjusting holes 315 provided on the second end B side of the hoop, thereby reaching the second end B of the locking hoop and The effect of the relative position of the joint portion 32. Further, on the inner side of the bent portion 43, a projection portion 42 is also provided. When the bent portion 43 of the lock member penetrates the adjustment hole, the gap between the projection portion 42 and the flat portion 41 just accommodates the lower side wall of the tubular joint portion, so that the lock member 4 does not fall off.

13 and 14 are schematic views of an inner stay type clip having another lock member according to a third embodiment of the present invention, which respectively show an operation state when the adjuster is rotated at different positions. In order to clearly show the working principle of the lock member in this embodiment, unlike FIG. 11, FIG. 13 and FIG. 14 are perspective views.

As shown in FIGS. 13 and 14, the lock member of this embodiment includes a lock pin 341, a stopper 342, and a tension spring 343. The locking pin 341 is located on the right side of the adjusting member 33, and one end thereof is hinged to the inner side wall of the joint portion 32 through the pin 3411, and the other end extends to the edge of the rotating shaft 331 of the adjusting member 33, so that the end is fixed to the rotating shaft 331 The trajectory of the toothed plunging block 332 interferes. The stopper 342 is disposed on one side of the lock pin 341 to block the lock pin 341 from rotating clockwise. It should be noted that both the locking pin 341 and the stopper 342 are disposed on the inner side wall of the joint portion, and may be disposed on the front side wall or the rear side wall, or at the same time on the front and rear side walls (front , the latter refers to the direction of the vertical paper). The stop shown in the figures is a rectangular block, but it can also be of any shape, such as a cylindrical shape.

Further, a first connecting pin 3412 is disposed in a middle portion of the locking pin 341, and a second connecting pin 344 is disposed above the first connecting pin 3412 of the inner side wall of the joint portion 32, and two of the tension springs 344 The ends are fixed to the first connecting pin 3412 and the second connecting pin 344, respectively. As shown in FIG. 13, when the adjusting member 33 rotates clockwise, the second end B of the driving hoop is moved to the right side to increase the circumference of the hoop, thereby expanding the inner tube to bring the inner tube into close contact with the outer tube. At this time, the toothed pull block 332 drives the lock pin 341 to rotate counterclockwise by a certain distance against the tensile force of the tension spring. When the adjusting member 33 continues to rotate, the toothed pull-out block 332 is disengaged from the movable end of the lock pin 341, and the lock pin 341 is rotated counterclockwise by the tension of the tension spring 343 to perform a return movement, and is blocked by the stopper 342. . This position of the lock pin 341 is the lock position. As shown in Fig. 14, at this time, since the upper portion of the toothed block 332 is blocked by the end portion of the lock pin 341, the counterclockwise rotation cannot be performed.

Although the lock pin 341 in this embodiment is in the shape of a rod, it may be any other suitable shape. The tension spring 344 can also be replaced by other elements capable of providing a restoring force to the pin stop pin 51, such as a torsion spring disposed at the pin 3411 of the lock pin 341, and the like. Transformations can be made by those skilled in the art in accordance with the principles provided herein.

In another preferred embodiment, the position of the stop is adjustable and movable, for example in the direction of the vertical side wall, such that it switches between a blocked state and a non-blocked state. Alternatively, as shown in Fig. 15, the stopper 342 is slidable in a direction parallel to the side wall along the sliding groove 345 on one side wall. That is, in the blocking state, it can block the lock pin from rotating in one direction as shown in Figs. 13 and 14, and it does not affect the rotation of the lock pin 51 in the non-blocking state. Thereby, the user can switch the lock mode and the non-lock mode of the inner clamp by adjusting the state of the stopper 342. When it is necessary to remove the clamp from the inner tube, it can be switched to the non-lock mode. To facilitate user adjustment, one end of the stop 342 can extend through the sidewall to the exterior of the sidewall. The snap fit required to slide the stop 342 in the chute 345 is well known in the art and will not be described in detail herein.

Figure 16 is a schematic illustration of a partial hoop of an inner ferrule in accordance with a fourth embodiment of the present invention. In this embodiment, the hoop portion of the inner ferrule further includes an elastic compensating mechanism. As described above, the inner tube of the present invention has elasticity. However, for many elastic materials, such as rubber, it gradually ages with the increase of the use time, so that the elasticity becomes gradually weak, and the inner tube becomes slack, and the inner support clamp cannot be given inside. The wall has sufficient supporting force to keep the inner tube and the outer tube in close contact. To this end, the present invention preferably provides an elastic compensation structure on the inner support clamp so that the inner support clamp can continuously impart sufficient support force to the inner tube when the inner tube is weakened or aged.

As shown in FIG. 16, the elastic compensating mechanism in this embodiment is a prefabricated corrugated structure 312, which is disposed at any position of the hoop as long as it does not affect the normal elastic adjustment of the clamp. When the clamp is installed in the inner wall of the inner tube and tensioned, the pre-formed corrugated structure is subjected to a compressive force at both ends to shorten its total length, i.e., a pre-compression force is obtained inside the clamp. When the inner tube becomes aged or relaxed, the pre-compression force is released to lengthen the overall length of the pre-formed corrugated structure 312 (as indicated by the arrow in the figure). Thereby ensuring that the clamp continuously gives sufficient support to the inner tube. Of course, other elastic compensation mechanisms can be used with the present invention, such as by springs.

Figure 17 is a schematic illustration of a motor-driven inner ferrule in accordance with a fifth embodiment of the present invention. As shown in Fig. 17, unlike the foregoing embodiment, in this embodiment, the adjusting member does not have an end portion with a recess 333 for user operation through the side wall of the joint portion. Instead, a driven gear 335 is coaxially fixed to the rotating shaft of the adjusting member inside the joint portion. Further, a speed control gear set 336 and a drive motor 337 are rotatably disposed on the side wall of the joint head. The drive motor 337 includes a drive gear 3371 that is fixed to its drive shaft. The speed gear set 336 includes a first gear 3361 and a second gear 3362. The first gear 3361 and the second gear 3362 are coaxially fixed. The first gear 3361 meshes with the drive gear 3371, and the driven gear 335 meshes with the second gear 3362. Since the number of teeth of the first gear 3361 is larger than the driving gear 3371, the number of teeth of the driven gear 335 is larger than that of the second gear 3362 because the rotational speed of the motor drive shaft is much larger than the rotational speed of the rotating shaft 331 of the adjusting member. When the control drive motor 337 is rotated, the shaft 331 of the adjustment member is rotated to adjust the circumference of the clamp.

Figure 18 is a bottom view of Figure 17. The positional relationship of the drive motor 337, the timing gear set 336, and the adjusting member shaft 331 in this embodiment can be seen from the figure. Of course, as long as the above-described meshing relationship is satisfied and the operation of the adjusting member is not affected, the positions of the respective gears in the drive motor 337, the timing gear set 336, and the adjusting member shaft 331 can be changed. Further, in order to supply power to the drive motor 337, the drive motor 337 includes a drive gear 3371 and a motor 3372, and a battery mount may be disposed outside the side wall of the joint portion of this embodiment for accommodating the battery 338. The battery 338 may be a battery of various types such as a dry battery or a button battery, or may be a rechargeable battery such as a solar battery. The battery mount can be a separate housing or a chamber of the joint, the position of which can be set as desired. The invention is not limited to the form shown in FIG.

Further, in order to control the rotation of the motor, a control circuit (not shown) may be provided at any position in the joint portion or the battery mount. The control circuit can be formed by a conventional PCB circuit board or by an integrated circuit, and the control mode can be a conventional manual switch or a remote control switch. By setting the remote control switch, the user does not need to manually operate, and only the remote control operation can achieve the fixing of the clamp.

A locking member may also be included in this embodiment. The lock member may employ any one of the second, third, and fourth embodiments. In addition to this, it is preferable to use the lock members shown in Figs. 17 and 19. In a preferred embodiment, the locking member includes a locking catch 351 that can be inserted into the teeth of the first gear 3361 by sliding.

19 and 20 show views of the lock cymbal 351 in both the embedded and the slide-out states. In order to more clearly show the operation of the lock member, the drive motor 337 and the adjuster shaft are indicated by broken lines. The locking member also includes a permanent magnet 352 and an electromagnet 353. The electromagnet 353 is fixed on the side wall of the joint portion, and can generate a magnetic field of opposite polarity under electric driving. The permanent magnet 354 can slide along the shaft under the driving of the magnetic field, thereby locking the lock 榫 351 fixed on the permanent magnet. It is possible to switch between the teeth that are inserted and slid out of the first gear 3361. Thereby, the polarity of the permanent magnet can be controlled by the forward and reverse flow of the current, thereby achieving an automatic operation between the locked and unlocked states.

The circuit for controlling the polarity of the electromagnet 353 can be integrally designed with the circuit for driving the motor 337, that is, it can be manual or remote.

Although FIG. 19 and FIG. 20 show a particular locking member, those skilled in the art can change the locking gear 351 to lock the gear and operate the locking cymbal as needed, which should be regarded as Within the scope of protection of the present invention.

Figure 21 is a schematic illustration of a self-locking inner retaining clip in accordance with a sixth embodiment of the present invention. The clamp of this embodiment does not require the provision of separate adjustment members and lock members, but the hoop and joint portions are designed to achieve adjustment and locking. As shown in FIG. 21, in this embodiment, the position of the hoop 31 near the second end B is provided with a first blocking block 313 protruding toward the center of the hoop, and at the same time, the outer side wall of the joint portion faces the hoop. A second blocking block 321 protruding in the center. Thus, the user can grasp the first blocking block 313 and the second blocking block 321 by a tool (for example, a pliers) and force the two stoppers to approach each other to achieve the purpose of adjusting the circumference of the hoop.

Figure 22 is a cross-sectional view taken along the broken line in Figure 21 . As shown in Fig. 21, the lower side wall of the joint portion 32 has a through opening so that the first blocking block 313 protrudes beyond the side wall through the opening. The second blocking block is disposed below the lower side walls on both sides of the opening. Fig. 23 is an enlarged view of a partial area of Fig. 22; As can be seen from Fig. 23, a reed 322 is provided on the inner side of the left and right side walls of the joint portion 32, and the reed 322 projects toward the inner side of the joint portion. The reed divides the internal space of the joint portion into upper and lower portions. The reed 322 is flexible and can be bent upward when an upward force is applied, and returns to its original state when the applied force is removed, that is, protrudes toward the inside of the joint portion. Thus, when the second end B of the hoop is inserted into the joint portion, it can be inserted from the lower half of the joint portion separated by the reed 322, as shown in the left diagram of FIG. 22, when the second When the end B exerts an upward force, as shown by the direction of the arrow in FIG. 23, the second end B can be pressed into the upper half space of the joint portion 32, and under the blocking of the reed, the second The end B can be at least closely attached to the inner wall of the upper side wall of the joint portion 32 as shown in the right drawing of FIG.

Figures 24 and 25 show cross-sectional views along the broken line of Figure 22, showing the detailed structure of the joint portion and the hoop. As shown in FIGS. 24 and 25, the upper surface of the second end B of the hoop 31 is provided with a plurality of barbs 314, which cooperate with the barbs 314, on the inner side of the upper side wall of the joint portion and the second side of the hoop The inner side of the one end A is provided with an inverted groove 323, and the barb 314 and the inverted groove 323 can be engaged with each other, so that when the barb 314 and the inverted groove 323 are closely adhered to each other, the second end B can only be opposite to the joint portion 32. It moves in the direction in which the joint portion 32 is pulled out, and cannot move in the direction in which the joint portion 32 is inserted. Therefore, when the second end B is inserted into the joint portion, the second end B needs to be inserted into the lower half of the joint portion as shown in FIG. 24; when the predetermined position is reached (usually the diameter of the clamp is small enough) Can be placed in the inner tube 2), the user applies pressure to the second end B toward the upper side wall of the joint portion, so that the second end B passes over the reed 322 into the upper half space, due to the action of the reed 322 The second end B closely fits to the inner wall of the upper side wall of the joint portion 32 and the inner side of the first portion A. Then, the first blocking block 313 and the second blocking block 321 are clamped by using an external tool, so that the second end B moves in the direction of pulling out the joint portion 32, and the circumference of the hoop is increased to achieve the effect of tightly supporting the inner tube. .

In the above embodiment, the reed 322 may be formed of an elastic metal member, or may be integrally formed by injection molding, so that the second end B can press the upper half space from the lower half space while effectively blocking the second end B. It is better to return the lower half of the space from the upper half of the space. Moreover, the one-way motion locking structure of the barb and the inverted groove can also be replaced by other similar structures, such as a sawtooth structure or the like. The size, position and number of the first blocking block and the second blocking block can be flexibly set as needed to facilitate the clamping.

Figure 26 is a schematic view of an inner stay type clamp having a protective cover in accordance with a seventh embodiment of the present invention. As shown in FIG. 21, in the embodiment, the outer circumference of the inner clamp is further provided with a protective sleeve 7, which can be made of a material having elasticity and flexibility, which can reduce the clamp to the inner tube. Wear of the inner wall surface.

Figure 27 is a schematic view showing a piping connection system in which an inner tube and a clamp are integrated according to an eighth embodiment of the present invention. In this embodiment, the portion of the inner tube 2 near the end is provided with a ring of outwardly projecting loops 21 having an inner diameter larger than the other portions of the inner tube 2, whereby the inner band clamp 3 It can be embedded in the ring, whereby the inner tube and the inner support clamp are integrated, thereby solving the inconvenience of separately arranging the clamp for the pipe.

The specific embodiments of the present invention have been described in detail in the foregoing detailed description of the embodiments of the present invention. All modifications, equivalents, improvements, etc., made within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

An inner ferrule includes a hoop (31), a joint portion (32) and an adjusting member (33), the hoop (31) enclosing an annular shape having a first end (A) and a second end (B), the first end (B) is fixedly connected to the joint portion (32); the second end (B) is inserted into the joint portion (32); the joint portion (32) has a hoop a passage through which the ring (31) penetrates; the adjusting member (33) is provided in the joint portion (32) for adjusting the length of the second end (B) penetrating into the joint portion (32).
The inner ferrule according to claim 1, wherein the joint portion (32) is a tubular shape with both ends open, and the first end (A) of the hoop (31) is fixed to the joint portion ( 32) On the side wall of one end.
The inner ferrule according to claim 2, wherein the adjusting member (33) is a cylindrical workpiece, and both ends thereof are rotatably hinged to the side walls of the joint portion (32), respectively.
The inner ferrule according to claim 3, wherein the adjusting member (33) is perpendicular to a plane in which the circle surrounded by the hoop (31) is located.
The inner clamp according to claim 4, wherein said adjusting member (33) includes a rotating shaft (331), and a plurality of toothed tabs are disposed along a periphery thereof in a middle portion of the rotating shaft (331) 332); one side of the second end (B) of the hoop (31) is provided with a plurality of adjusting holes (35), the shape and spacing of the adjusting holes (35) and the plurality of adjusting members (33) The toothed tabs (332) are mated.
The inner ferrule of claim 5, further comprising a drive motor (337), said spindle (331) being driven by said drive motor (337).
The inner ferrule of claim 6, wherein the drive motor (337) is controlled by a remote control.
The inner ferrule of claim 6, wherein the drive motor (337) drives the spindle (331) via a timing gear set (336).
The inner ferrule of claim 8 wherein the gear of the timing gear set (336) is locked or unlocked by a locking cymbal (351).
The inner ferrule of claim 9, wherein the locking cymbal (351) is driven by an electromagnetic force.
The inner ferrule according to claim 5, wherein the rotating shaft (331) has a card slot (334) near the two ends thereof, and the card slot (334) is used for the joint portion (32) The side walls are engaged.
The inner ferrule according to claim 11, wherein one end surface of the rotating shaft (331) is provided with a groove (333) through which an external tool can rotate the rotating shaft to operate the adjusting member. (33).
The inner ferrule of claim 5, further comprising a locking member (4) capable of causing the second end (B) of the ferrule relative to the joint portion (32) ) Locked.
The inner ferrule according to claim 13, wherein the locking member (4) comprises a body comprising a bent portion (43) on both sides and a flat portion (41) in the middle, two bends The portion (43) penetrates the joint portion (32) into the adjustment hole (35) provided on the second end (B) side of the hoop, respectively.
The inner ferrule according to claim 14, wherein the inner side of the bent portion (43) is respectively provided with a protrusion (42), and the bent portion (43) penetrates the adjustment hole ( 35), the gap between the protrusion (42) and the flat portion (41) just accommodates the lower side wall of the joint portion (32).
The inner ferrule according to claim 13, wherein the locking member interferes with the toothed paddle (332) such that the adjusting member (33) can only face in the direction of increasing the circumference of the ferrule motion.
The inner ferrule of claim 16 wherein said locking member comprises a locking pin (341), a stop (342) and a tension spring (343); said locking pin ( One end of the 341) is hinged to the inner side wall of the joint portion (32) by a pin (3411), and the other end extends to the edge of the rotating shaft (331) of the adjusting member (33); the stopper (342) is disposed at the lock One side of the pin (341) stops the rotation of the lock pin (341) in one direction.
The inner ferrule of claim 17, wherein the lock pin (341) is fixed with a tension spring (343) for pulling the lock pin (341) back to the lock position.
The inner ferrule of claim 17 wherein said stop (342) is adjusted in a locked position and an unlocked position, wherein said non-latched position does not block said lock The rotation of the pieces.
The inner ferrule according to claim 1, wherein the inner side wall of the joint portion (32) and the outer surface of the second end (B) of the hoop (31) are provided with a one-way movement lock that cooperates with each other. The stop structure, the second end (B) of the hoop (31) can only move in the direction in which the joint portion is pulled out.
The inner ferrule according to claim 20, wherein a inner side of the left and right side walls of the joint portion (32) is provided with a reed (322) which protrudes toward the inner side of the joint portion. Dividing the inner space of the joint portion (32) into upper and lower halves, and the second end (B) of the hoop can pass through the reed (322) after entering the lower half and enter the upper half, and The second end (B) can be closely attached to the inner wall of the upper side wall of the joint portion (32) under the blocking of the reed.
The inner ferrule of claim 21, wherein the position of the hoop (31) adjacent to the second end (B) is provided with a first blocking block (313) protruding toward the center of the hoop, The outer side wall of the joint portion is provided with a second blocking block (321) that protrudes toward the center of the hoop (31).
The inner ferrule of claim 1 wherein said ferrule comprises an elastic compensating mechanism.
The inner ferrule of claim 23, wherein the elastic compensating mechanism is a prefabricated corrugated structure (6).
The inner ferrule of claim 1 further comprising a protective sleeve (7) surrounding the ferrule and the joint portion.
A pipe connection system comprising an outer pipe (1), an inner pipe (2) and an inner support clamp (3), the inner pipe (2) having elasticity, and at least a part of which is sleeved on the outer pipe In (1), the inner support type clamp (3) is located inside the inner tube (1) and is used to extend outward from the inner tube (2). The inner tube (2) is in intimate contact with the outer tube (2); the inner support type clamp (3) is the inner support type clamp according to any one of claims 1 to 25.
The pipeline connection system according to claim 26, wherein said inner tube (2) is integrated with an inner support type clamp (3), and said inner support type clamp is fixed to the inner side of the inner tube (2) On the wall.
An elastic pipe in which an inner ferrule is fixed to an inner wall thereof, and the inner ferrule (3) is the inner ferrule according to any one of claims 1 to 25.
A pipe joining method for tightly connecting an elastic inner pipe (2) with an outer pipe (2), the method comprising:

Locating at least a portion of the inner tube (2) in the outer tube (1);

Locating an inner support clamp (3) in the inner tube (1);

Adjusting the circumference of the inner support clamp (3) to open the inner tube (2) outwardly so that the inner tube (2) is in close contact with the outer tube (1), wherein the inner support The clamp (3) is the inner support type clamp according to any one of claims 1 to 25.