CN204677926U - a joint - Google Patents

Abstract

The utility model discloses a joint, can insert pipe (1) in the outside work piece hole including the tip, it is used for bloating its internal diameter and guarantees to cup joint in pipe (1) the piece (2) of emboliaing of pipe (1) normal work, the joint of the bloated partial outer end department joint of pipe (1) has and is used for with pipe (1) is connected to fixed part (3) together with outside work piece, the internal diameter of fixed part (3) is less than the most outside diameter of bloating of pipe (1). The utility model discloses a joint, no longer need to use the joint accessory, but directly insert pipe (1) in the outside work piece, fix pipe (1) and outside work piece with fixed part (3); thereby facilitating installation and reducing costs; and when the liquid pressure is higher, the fixation between the sleeve part (2) and the fixed part (3) is tighter, and the leakage is prevented.

Description

a joint

technical field

The utility model relates to the technical field of connection, in particular to a joint.

Background technique

When it is necessary to transfer water or other liquids to heat-dissipating aluminum parts or other workpieces, it is often necessary to connect the heat-dissipating aluminum parts or other workpieces to the pipes through which the liquid passes. Joint fittings are required when the pipes are connected to the heat-dissipating aluminum parts or other workpieces.

When connecting pipes with external workpieces, the joint fittings used are made of hexagonal brass branches. Screw teeth are processed at one end of the joint fittings. The specifications of the screw teeth are the international "inch throat Teeth", the standard is divided into 1/8 inch, 1/4 inch, 3/8 inch, etc., and the other end needs to be processed with different sizes of nozzles to match pipes with different outer or inner diameters, and it needs to occupy a certain space , It is necessary to use more specialized tools such as wrench or throat pliers during assembly; moreover, the heat dissipation workpiece connected to the joint accessories also needs to be processed and tapped with the same specification screw teeth at the same time, although the processing of the screw teeth is relatively small Small workpieces are not a big problem, but it is difficult to process larger workpieces, resulting in increased costs.

Therefore, how to easily assemble the pipe on the external workpiece and reduce the cost of assembly is a technical problem to be solved by those skilled in the art.

Utility model content

The purpose of the utility model is to provide a joint, which can relatively easily assemble the pipe on the external workpiece and reduce the cost during assembly.

In order to solve the above-mentioned technical problems, the utility model provides a joint, including a pipe whose end can be inserted into the inner hole of an external workpiece. The pipe is sleeved with an insert for expanding its inner diameter and ensuring the normal operation of the pipe. , the outer end of the expansion part of the pipe is clamped with a fixing part for connecting the pipe and an external workpiece together, and the inner diameter of the fixing part is smaller than the maximum outer diameter of the expansion part of the pipe.

Preferably, a sealing ring is provided between the fixing part and the largest outer diameter part of the expansion part of the pipe.

Preferably, the sealing ring is a rubber ring.

Preferably, a sealing ring fixing groove is provided on the fixing member, and one end of the sealing ring can be sleeved in the sealing ring fixing groove.

Preferably, the fixing part is provided with a hole through which a screw can pass, and the fixing part is threadedly connected with an external workpiece.

Preferably, the holes through which the screws can pass are uniformly arranged on the fixing member along the circumferential direction of the fixing member.

Preferably, the insert includes a middle circular ring portion and hollow truncated conical portions arranged on both sides of the circular ring portion, the outer diameter of the circular ring portion is equal to the maximum outer diameter of the truncated cone portion.

Preferably, the pipe is a rubber hose.

Compared with the installation method in the prior art, the joint provided by the utility model no longer needs joint accessories, but is directly sleeved in the pipe with a sleeve that does not affect the normal operation of the pipe, and the sleeve can expand the size of the pipe. Inner diameter, the fixed part used to connect the pipe and the external workpiece is clamped at the outer end of the expansion part of the pipe. The inner diameter of the fixed part is smaller than the maximum outer diameter of the expansion part. Tools such as wrenches or throat pliers are no longer needed to connect the pipe and fittings together, and there is no need to process screw teeth on the external workpiece, the installation between the pipe and the external workpiece is easy and the cost is low; at the same time, when the liquid flows through the pipe At this time, the sleeve and the tube are pushed by the liquid pressure, so that when the expansion part of the tube is pressed by the liquid pressure, it will be stuck to the fixed part, so that when the liquid pressure is greater, the expansion part of the tube will be in contact with the fixed part. The fixation is tighter.

In a preferred embodiment, a sealing ring is added between the maximum outer diameter of the expanded part of the pipe and the fixed part. When pressed by liquid pressure, due to the effect of the sealing ring, the outside of the pipe will Leak-tight seal.

Description of drawings

Fig. 1 is the structural representation of the joint that the utility model embodiment provides;

Fig. 2 is a cross-sectional view of the inserting part of the joint provided by the embodiment of the present invention;

Fig. 3 is a left view of the fixing part of the joint provided by the embodiment of the present invention;

Fig. 4 is a right view of the fixing part of the joint provided by the embodiment of the present invention;

Fig. 5 is a sectional view of plane A-A of Fig. 3;

Fig. 6 is a sectional view of plane B-B of Fig. 4 .

Detailed ways

The core of the utility model is to provide a joint, which can easily assemble the pipe on the external workpiece and reduce the cost of assembly.

In order to enable those skilled in the art to better understand the solution of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to Fig. 1, Fig. 1 is a schematic structural diagram of the joint provided by the embodiment of the present invention.

As can be seen from Figure 1, the joint provided by the embodiment of the utility model mainly includes a pipe 1 whose end can be inserted into the inner hole of an external workpiece, and the pipe 1 is sleeved with a socket for expanding its inner diameter and ensuring the normal operation of the pipe 1. Inserting part 2, the outer end of the expansion part of the pipe 1 is clamped with a fixing part 3 for connecting the pipe 1 and an external workpiece. The inner diameter of the fixing part 3 is smaller than the maximum outer diameter of the expansion part of the pipe 1.

In this paper, the external workpiece is described as a heat-dissipating aluminum part. Of course, the external workpiece can also be other workpieces through which liquid can flow.

The joint provided by the embodiment of the utility model is directly sleeved in the pipe 1 with an inserting part 2 that does not affect the normal operation of the pipe 1. The inserting part 2 can expand the inner diameter of the pipe 1, and the outer end of the expanded part of the pipe 1 There is a fixed part 3 used to connect the pipe 1 and the external workpiece together. The inner diameter of the fixed part 3 is smaller than the maximum inner diameter of the expansion part. After the pipe 1 is sleeved inside the external workpiece, the fixed part 3 can be directly It is fixed with the external workpiece, no joint accessories are needed, tools such as wrench or throat pliers are no longer needed, and screw teeth are no longer required to be processed on the external workpiece, the installation between the pipe 1 and the external workpiece is easy and the cost is low; At the same time, when the liquid flows through the pipe 1, the liquid can be water, and the inserting part 2 and the pipe 1 are pushed by the water pressure, so that when the expansion part of the pipe 1 is pressed by the water pressure, it will fasten the fixing part 3 , the greater the water pressure, the tighter the expansion part of the pipe 1 will be fixed with the fixing part 3 .

The outer end of the expansion part of the tube 1 referred to above is the end of the expansion part of the tube 1 away from the heat dissipation aluminum part.

As shown in Figure 1, further, in order to increase the leak-proof effect, a sealing ring 4 is arranged between the fixed part 3 and the maximum outer diameter part of the expansion part of the pipe 1, the sealing ring 4 can be a rubber ring, and the pipe 1 can be hose. Of course, the sealing ring 4 can also be a sealing ring 4 made of metal material, and the pipe 1 can also be a metal pipe.

As shown in Figure 2-Figure 6, Figure 2 is a cross-sectional view of the inserting part of the joint provided by the embodiment of the utility model; Figure 3 is a left view of the fixing part of the joint provided by the embodiment of the utility model; Figure 4 is the utility model embodiment The right side view of the fixing part of the joint provided by the new embodiment; FIG. 5 is a sectional view of the A-A plane of FIG. 3; FIG. 6 is a sectional view of the B-B plane of FIG. 4.

A sealing ring fixing groove 31 can be provided on the fixing part 3, and one end of the sealing ring 4 can be sleeved in the sealing ring fixing groove 31; The workpieces are connected by screws; the holes 32 through which the screws can pass are uniformly arranged on the fixing part 3 along the circumferential direction of the fixing part 3 .

The insert 2 includes a central circular ring part 21 and hollow truncated cone parts 22 arranged on both sides of the circular ring part 21 , the outer diameter of the circular ring part 21 is equal to the maximum outer diameter of the truncated cone part 22 .

That is, the shape of the inserting part 2 is similar to that of a tube, and the inserting part 2 is made of metal.

When the inserting part 2 is inserted into the pipe 1, the inner diameter of the pipe 1 is expanded by the inserting part 2, the inner diameter of the fixing part 3 is smaller than the maximum outer diameter of the expanded part of the pipe 1, the pipe 1 will block the fixing part 3, and A sealing ring 4 is arranged between the fixed part 3 and the maximum outer diameter part of the expanded part of the pipe 1, and then the fixed part 3 is fixed together with the heat-dissipating aluminum part with cross-shaped screws. Of course, the above-mentioned fixed part 3 can also be passed through other Type screws are fixed together with the heat dissipation aluminum parts.

When cooling the heat-dissipating aluminum parts, in the case of high cooling water flow and water pressure, the pipe 1 will bear a large thrust, thereby driving the expansion part of the pipe 1 to clamp the inserting part 2 and the fixed part 3 more tightly , so the cooling water flow and water pressure will not affect the leak-proof effect of the joint. There are four holes 32 on the outer periphery of the fixed part 3 for screws to pass through, and four cross-shaped screws are used to fix the fixed part 3 and the heat-dissipating aluminum part together, so that the fixed part 3 can be evenly stressed, and the strength is higher and more durable . The sealing ring 4 is installed in the sealing ring fixing groove 31 of the fixing part 3, and the sealing ring 4 is distributed between the expansion part of the pipe 1 and the fixing part 3, which can effectively prevent water leakage at the connection position.

Of course, the shape of the inserting part 2 is not limited to the above design, as long as the inserting part 2 can be conveniently inserted into the pipe 1, is not easy to slip off and can also expand the inner diameter of the pipe 1, and the maximum outer diameter of the expanded part of the pipe 1 The fixing part 3 can be stuck.

The joint provided by the utility model has been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present utility model, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made to the utility model, and these improvements and modifications also fall into the protection of the claims of the utility model. within range.

Claims (8)

1. A joint, characterized in that it comprises a pipe (1) whose end can be inserted into the inner hole of an external workpiece, and is sleeved with a pipe (1) for expanding its inner diameter and ensuring that the pipe (1) is normal The working sleeve (2), the outer end of the expansion part of the pipe (1) is clamped with a fixing part (3) for connecting the pipe (1) and the external workpiece together, and the fixing part (3) has an inner diameter smaller than the maximum outer diameter of the expanded portion of said tube (1). 2. The joint according to claim 1, characterized in that a sealing ring (4) is provided between the fixing part (3) and the largest outer diameter portion of the expanded portion of the pipe (1). 3. The joint according to claim 2, characterized in that the sealing ring (4) is a rubber ring. 4. The joint according to claim 3, characterized in that, the fixing part (3) is provided with a sealing ring fixing groove (31), and one end of the sealing ring (4) can be sleeved on the sealing ring in the fixing slot (31). 5. The joint according to any one of claims 1-4, characterized in that, the fixing part (3) is provided with holes (32) for screws to pass through, and the fixing part (3) is connected to the external The workpiece is threaded. 6. The joint according to claim 5, characterized in that, the holes (32) through which screws can pass are uniformly arranged on the fixing part (3) along the circumferential direction of the fixing part (3). 7. The joint according to claim 1, characterized in that, the insert (2) comprises a central ring portion (21) and a hollow truncated cone portion ( 22), the outer diameter of the ring portion (21) is equal to the maximum outer diameter of the frustum of cone portion (22). 8. The joint according to claim 1, characterized in that, the pipe (1) is a rubber hose.