TWI637133B - Thimble joint structure - Google Patents

Abstract

A thimble joint structure includes a first connecting member, a second connecting member and a thimble. The first connecting member has a head and a body, and is provided with a first passage therethrough, and a connecting groove with a threaded portion is disposed at one end of the head. The first passage is provided with a first step portion formed with a large diameter section and a small diameter section, wherein the body portion is provided with a through hole communicating with the small diameter section, wherein the step portion is closer to the head than the through hole. The ejector pin is movably disposed in the first passage by a push rod, and the ejector pin is provided with a flange at the large diameter section, and is selectable to abut against the step and block the first passage. The second connecting member sleeves around the outer periphery of the first connecting member and is relatively pivotable, and the sleeve is provided with a branch pipe and is provided with a second passage penetrating to the hollow chamber, the sleeve and the body There is a leak-proof member that closes the hollow chamber.

Description

Thimble joint structure

The invention relates to a joint structure, and more particularly to a joint provided with a thimble.

As shown in Fig. 5, considering a case where the refrigerant is injected into the air conditioner through the refrigerant pipe, the end of the refrigerant pipe 5 is provided with a joint 6 which is threadedly engaged with the interface 7 of the air conditioner, wherein the joint 6 is internally A needle 61 is provided, and a valve member 71 is disposed in the interface 7. When the joint 6 is screwed to the interface 7, the ejector pin 61 will push the valve member 71 to push the refrigerant from a high pressure storage tank (for example The cylinder) is output through the refrigerant line 5 and is injected into the interface 7.

After the refrigerant filling operation is completed, the constructor must remove the joint 6 of the refrigerant line 5 from the interface 7 of the air conditioner. Usually, the constructor touches the joint 6 with a hand-held tool or only by hand, but the residual high-pressure refrigerant remains in the refrigerant pipe 5, and the refrigerant in the pipe will quickly leak out from the joint 6 at the time. It is possible to spray your hand and get hurt. On the other hand, when the refrigerant line 5 is detached from the air conditioner, the amount of refrigerant discharged is the volume of the entire refrigerant line 5, and there is a shortage of wasted material due to the excessive amount.

In view of this, how to improve the above problems is the primary problem to be solved by the present invention.

The main object of the present invention is to provide a thimble joint structure in which the ejector pin can be moved out by operation and can control the thimble to interlock with the joint, thereby facilitating the connection and disassembly of the pipeline and reducing the risk of personal injury when the joint is disassembled.

To achieve the foregoing objective, the present invention provides a thimble joint structure including: a first connecting member having a head portion and a body connected thereto, and a first portion extending from the head portion to the body portion a channel, wherein the first channel is provided at one end of the head with a connecting groove for connecting an external pipe, and the connecting groove is provided with a first thread segment; the first channel is provided with a first step and a large diameter segment is formed And a small diameter section, wherein the small diameter section is provided with a second threaded section; the body is provided with a through hole communicating with the small diameter section, wherein the step is closer to the head than the through hole; Having a top push rod extending from the first passage, the push rod is provided with a third thread segment at a corresponding small diameter portion and screwed to the second thread portion, which can be rotated by the first Moving in a passage; the ejector pin is provided with a flange corresponding to the large diameter section, the flange is movable with the ejector rod, and is selectable against the step and blocks the first passage; the top The push rod has an operating portion on the first channel peripheral; a second connecting member a sleeve and a branch pipe for connecting the external pipe; the sleeve is surrounded by a hollow chamber, and the branch pipe is provided with a second passage penetrating to the hollow chamber; the sleeve is sleeved on the first connecting member The outer circumference of the body is pivotable relative to the body, and a stop member for closing the hollow chamber is disposed between the sleeve and the body.

In an embodiment, the operating portion and the connecting groove are separated by a safe distance.

In one embodiment, a movable spacer is disposed on an end surface of the body; the operating portion of the ejector pin is placed against the spacer when the pusher of the ejector is moved into the connecting slot.

In one embodiment, the operating portion is provided with a groove on a side of the body, and when the ejector push rod moves into the connecting groove, the operating portion is sleeved on the body with the groove outer.

The spacer is a gasket or a roller bearing.

In an embodiment, a ring groove for inserting the stop member is provided around the outer circumference of the body or around the inner circumference of the sleeve.

The above objects and advantages of the present invention will be readily understood from the following detailed description of the embodiments of the invention.

Referring to Figures 1 and 2, the ejector joint structure provided by the present invention includes a first connecting member 1, a second connecting member 2 and a thimble 3. The first connecting member 1 has a head portion 11 and a body portion 12 connected thereto, and a first passage 13 extends from the head portion 11 to the body portion 12 to form the first connecting member 1 into a tubular shape. The first passage 13 is provided with a connecting groove 14 at one end of the head portion 11. The connecting groove 14 is provided with a first threaded portion 141 for connecting an external pipe.

The first passage 13 has a different inner diameter at a portion corresponding to the head portion 11 and the body portion 12, wherein the corresponding head portion 11 has a larger inner diameter and a large diameter portion 131 is formed. The body portion 12 has a smaller inner diameter to form a small diameter portion 132, and a joint portion 133 is formed at the junction of the large diameter portion 131 and the small diameter portion 132; wherein the small diameter portion 132 is provided with a first portion Two thread segments 134. In addition, the outer surface of the body portion 12 is provided with a through hole 15 communicating with the small diameter portion 132, wherein the step portion 133 is closer to the head portion 11 than the through hole 15.

The ejector pin 3 has a push rod 31 having an operating portion 32 at one end and a pushing portion 33 at the other end, and a third threaded portion 311 is disposed on the pushing rod 31. The ejector pin 3 is inserted into the first passage 13 by the ejector pin 31, and the third thread segment 311 is movably coupled to the second thread segment 134 of the small diameter segment 132. The operating portion 32 is located outside the small diameter portion 132 and has a sufficient safety distance from the connecting groove 14; the operating portion 32 has a size that is convenient for the operator to hold, and has an anti-skid pattern 321 on the outer circumference. The operator operates to rotate the ejector pin 3 to move in the first passage 13 by means of a thread. One end of the body portion 12 is provided with a spacer member 17 movably sleeved on the ejector pin 31 and corresponding to the operating portion 32. The spacer member 17 can be a spacer or a roller bearing. In addition, the operating portion 32 is provided with a recess 322 on one side of the body portion 12.

Further, a portion of the ejector rod 31 extending from the large diameter section 131 is provided with a flange 34 which is movable in the large diameter section 131 along with the ejector rod 31. The outer diameter of the flange 34 is greater than the inner diameter of the small diameter section 132 so as to be blocked by the step 133 against the step 133 and thereby block the first passage 13.

The second connecting member 2 has a sleeve 21 surrounding a hollow chamber 211, and one side of the sleeve 21 protrudes from a branch pipe 22 for connecting an external pipe, so that the second connecting member 2 forms a T shape. The branch pipe 22 is provided with a second passage 23 penetrating the hollow chamber 211.

The inner diameter of the sleeve 21 is slightly larger than the outer diameter of the body portion 12, and the second connecting member 2 can be sleeved on the outer circumference of the body portion 12; in other words, the body portion 12 is worn. In the hollow chamber 211 of the sleeve 21, and the end thereof protrudes from the hollow chamber 211, whereby the first connecting member 1 can be pivoted relative to the sleeve 21. The hollow chamber 211 is closed at both ends by a leakage stop member 24, wherein the leakage stop member 24 is a rubber ring disposed between the sleeve 21 and the body portion 12 and surrounding the body portion 12. A ring groove 16 is provided in the outer circumference or around the inner circumference of the sleeve 21 for the leakage stopper 24 to be embedded; in the present embodiment, the ring groove 16 is provided on the outer circumference of the body portion 12.

The present invention can be applied to various pressure pipes for conveying a pressure fluid, such as air, oil or refrigerant, by the above structure. As shown in FIG. 2 to FIG. 4, in consideration of a case where a refrigerant is injected into the air conditioner, as shown in FIG. 2, first, the ejector pin 3 is retracted to the flange 34 by rotating the operation portion 32. At the position of the step 133, and continuing to tighten, the first passage 13 is surely blocked; on the other hand, the line 41 for supplying the refrigerant is connected to the branch pipe 22 of the second connecting member 2. Then, the connecting groove 14 of the first connecting member 1 is screwed to the interface 42 of the air conditioner, wherein the thimble 3 is passed by the third thread segment 311 before the connecting slot 14 and the interface 42 are not locked. The first threaded member 134 is locked to the second threaded portion 134 of the first passage 13 to generate a frictional resistance. The operator only needs to operate the rotating portion of the operating portion 32 to drive the first connecting member 1 to rotate synchronously. The connecting groove 14 is screwed to the interface 42 as shown in FIG. At this time, since the first connecting member 1 is threaded into the sleeve 21 of the second connecting member 2, the first connecting member 1 can be freely rotated without affecting the second connecting member 2 and its Connected refrigerant line 41.

After the connecting slot 14 and the interface 42 are locked in the foregoing manner, the first connecting member 1 is fixed to the interface 42 and can no longer be rotated. However, the operating portion 32 is continuously rotated, and the third thread segment 311 is The frictional resistance between the second thread segments 134 can be overcome, and the thimble 3 can be unlocked to rotate independently relative to the first connector 1 as shown in FIG. 4, thereby unscrewing the second thread segment 134. Displacement occurs, and the pushing portion 33 of the thimble 3 further extends into the connecting groove 14 and pushes the valve member 421 located in the interface 42. At this time, the flange 34 of the thimble 3 leaves the step 133, and the refrigerant line 41 can communicate with the first passage 13 via the second passage 23 and the through hole 15, thereby allowing the refrigerant to be injected according to the above path. Air conditioner. On the other hand, when the pushing portion 33 of the ejector pin 3 moves into the connecting groove 14 to push the valve member 421 away, the operating portion 32 just moves and the groove 322 is sleeved outside one end of the body portion 12, And on the spacer 17 and.

After the refrigerant filling operation is completed, the operator can detach the present invention from the interface by following the reverse steps. In detail, the operator reversely rotates the operating portion 32 in the state of use shown in FIG. 4, since the frictional resistance between the connecting groove 14 of the first connecting member 1 and the thread of the interface 42 is relatively larger than the The frictional resistance between the push rod 31 and the thread of the small diameter section 132, so that the thimble 3 will be screwed into the second threaded section 134 to cause the urging portion 33 to retreat from the valve member 421 in the interface 42. Go to the state shown in Figure 3. In the above process, since the operating portion 32 is abutted against the spacer 17, and the spacer 17 is movable relative to the body 12, causing a small frictional resistance therebetween, the operation can be avoided. In this stage, the portion 32 drives the first connecting member 1 to rotate together due to excessive frictional resistance.

Then, the operating portion 32 is further rotated, and the ejector pin 3 is locked to the second thread segment 134 because the flange 34 of the thimble 3 abuts the step 133, and the thimble 3 can no longer be opposite the first The connecting member 1 is rotated so that the first connecting member 1 will be rotated to rotate out of the interface 42 and return to the state as shown in Fig. 2, whereby the connecting groove 14 is detached from the interface 42.

Through the foregoing description, it can be found that during the assembly and disassembly process of the present invention, the operator only needs to operate the operation portion 32 to complete the entire operation step, and does not need to assemble or disassemble the head 11 by hand or with a tool. This avoids the situation where the high-pressure refrigerant remaining in the tube is suddenly ejected and injured when being disassembled, and the operating portion 32 and the connecting groove 14 have a certain safe distance, thereby ensuring safety in the filling operation.

Further, the present invention is completed when the refrigerant is filled and is being disassembled, as shown in Fig. 3, since the valve member 421 at the interface 42 is closed, and the flange 34 of the thimble 3 has abutted against the step 133. The first passage 13 is blocked, so that after the disassembly, the residual refrigerant that is discharged in the tube is limited to the amount within the large diameter section 131, in addition to reducing the risk of injury to the operator, and reducing leakage. Quantity, which in turn reduces waste of raw materials.

However, the above description of the embodiments is merely illustrative of the invention and is not intended to limit the invention, and the replacement of equivalent elements is still within the scope of the invention.

In summary, it will be apparent to those skilled in the art that the present invention can achieve the foregoing objectives and is in accordance with the provisions of the Patent Law.

First connector 1 head 11 body 12 first channel 13 large diameter section 131 small diameter section 132 step 133 second thread section 134 connecting groove 14 first thread segment 141 through hole 15 ring groove 16 spacer 17 second Connector 2 Sleeve 21 Hollow chamber 211 Branch pipe 22 Second passage 23 Stop member 24 Thimble 3 Push rod 31 Third thread segment 311 Operating portion 32 Non-slip line 321 Groove 322 Pushing portion 33 Flange 34 Refrigerant line 41 Interface 42 Valve 421 Refrigerant line 5 Connector 6 Thimble 61 Interface 7 Valve 71

1 is a perspective exploded view of the present invention; 2, 3, and 4 are schematic cross-sectional views of the present invention, and a schematic view of the action state; and FIG. 5 is a schematic view showing the state of use of the conventional structure.

Claims (6)

A thimble joint structure comprising: a first connecting member having a head and a body connected thereto, and a first passage extending from the head to the body, wherein the first passage is One of the ends of the head is provided with a connecting groove for connecting the external pipe, and the connecting groove is provided with a first threaded section; the first channel is provided with a first step and a large diameter section and a small diameter section are formed, wherein the small section a second threaded section is disposed on the diameter section; the body portion is provided with a through hole communicating with the small diameter section, wherein the step portion is closer to the head than the through hole; a thimble having a first passage extending from the first passage a top push rod, the top push rod is provided with a third thread segment corresponding to the small diameter section and screwed to the second thread segment, which can be moved in the first passage by rotation; the push rod Providing a flange corresponding to the large diameter section, the flange is movable with the push rod, and is selectable against the step and blocking the first passage; the push rod is on the first passage peripheral An operating portion; a second connecting member having a sleeve and a connecting outer portion a branch pipe of the road; the sleeve is surrounded by a hollow chamber, and the branch pipe is provided with a second passage penetrating to the hollow chamber; the sleeve is sleeved on the outer circumference of the body of the first connecting member and is opposite to the body Turning, and a stop member for closing the hollow chamber is disposed between the sleeve and the body. The thimble joint structure of claim 1, wherein the operating portion and the connecting groove are separated by a safe distance. The thimble joint structure according to claim 1, wherein one end of the body is provided with a movable spacer; and when the pusher of the ejector moves to extend into the connecting groove, the operating portion abuts the spacer on. The thimble joint structure of claim 3, wherein a side of the operating portion facing the body is provided with a groove, and when the ejector push rod moves into the connecting groove, the operating portion The groove is sleeved outside one end of the body. The thimble joint structure of claim 3 or 4, wherein the spacer is a washer or a roller bearing. The thimble joint structure according to claim 1, wherein a ring groove for inserting the stopper is provided around the outer circumference of the body or around the inner circumference of the sleeve.