CN108916498B - Connecting structure of R744 air conditioner pipe and conversion connecting assembly - Google Patents
Connecting structure of R744 air conditioner pipe and conversion connecting assembly Download PDFInfo
- Publication number
- CN108916498B CN108916498B CN201811000368.2A CN201811000368A CN108916498B CN 108916498 B CN108916498 B CN 108916498B CN 201811000368 A CN201811000368 A CN 201811000368A CN 108916498 B CN108916498 B CN 108916498B
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- Prior art keywords
- connector
- pipe
- conversion
- air
- outer sleeve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/08—Joints with sleeve or socket with additional locking means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/02—Hose-clips
- F16L33/035—Hose-clips fixed by means of teeth or hooks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/02—Hose-clips
- F16L33/10—Hose-clips with a substantially-radial tightening member
Abstract
The invention discloses a connecting structure of an R744 air-conditioning pipe and a conversion connecting component, which comprises the R744 air-conditioning pipe and the conversion connecting component, wherein the R744 air-conditioning pipe is sequentially provided with a barrier layer, a first rubber layer, a reinforcing layer and a second rubber layer from inside to outside; conversion coupling assembling includes connector, conversion connecting pipe, outer tube, and the one end of connector and the one end fixed connection of barrier layer, conversion connecting pipe comprise cup joint portion and pipe connection portion, cup joint portion configuration is in on the connector, the outer tube configuration is in second rubber layer and cup joint portion back, and the outer tube is fixed with second rubber layer and cup joint portion, be equipped with the assembly groove on the global of connector, be equipped with on the inner peripheral face of cup joint portion with the boss that the assembly groove corresponds makes the boss that cup joints in the portion cooperate to under withholding the effort behind in the assembly groove for cup joint portion and connector are fixed as an organic whole. The invention can prevent the bulge on the air-conditioning pipe.
Description
Technical Field
The invention relates to an R744 air-conditioning pipe, in particular to a connecting structure of the R744 air-conditioning pipe and a conversion connecting component.
Background
At present, with the rapid development of new energy automobiles, refrigerant working media in automobile air conditioners are also rapidly updated, R744 is used as a natural working media, the ozone layer is not damaged, and the global warming potential GWP is 1. However, as the working medium is changed, the components in the air conditioning system are changed, and the performance requirements of the air conditioning pipe and the connecting structure are changed. The existing R744 air-conditioning pipe is sequentially provided with a barrier layer, a first rubber layer, a reinforcing layer and a second rubber layer from inside to outside, but the R744 air-conditioning pipe needs to be connected with a compressor, so that a conversion connecting component needs to be installed on the R744 air-conditioning pipe.
The publication number CN108317343A discloses an R744 air-conditioning pipe connection structure, which includes a crossover sub, a steel sleeve and a core pipe arranged inside the air-conditioning pipe, wherein the outer diameter of the core pipe is consistent with the inner diameter of the barrier layer, one end of the crossover sub is provided with a connection part for matching with the air-conditioning pipe, and the connection part is embedded between the barrier layer and the first rubber layer of the air-conditioning pipe; the steel sleeve is sleeved at the joint of the air conditioner pipe and the outer wall of the adapter, and the adapter is connected with the steel sleeve through a clamping structure.
To the air conditioner pipe of above-mentioned structure, the one end of connector with the inside barrier layer of air conditioner pipe is fixed continuous, the other end excircle of connector and crossover sub's hole cooperation, crossover sub is connected with the compressor, when the intraductal gas expansion of compressor or air conditioner, the expanded gas can promote the axial displacement right in the connector along the air conditioner, when the connector displacement, the connector produces the extrusion effort to the barrier layer, thereby arouse barrier layer compressive deformation, the internal diameter grow of barrier layer, including the restriction of core pipe to the barrier layer, lead to the barrier layer can only follow the outside deformation of air conditioner pipe, the condition of bulging package appears on the air conditioner pipe.
Disclosure of Invention
The invention aims to provide a connecting structure of an R744 air-conditioning pipe and a conversion connecting component, which can prevent the air-conditioning pipe from bulging.
The technical scheme for solving the technical problems is as follows:
a connecting structure of an R744 air-conditioning pipe and a conversion connecting assembly comprises the R744 air-conditioning pipe and the conversion connecting assembly, wherein the R744 air-conditioning pipe is sequentially provided with a barrier layer, a first rubber layer, a reinforcing layer and a second rubber layer from inside to outside;
conversion coupling assembling includes connector, conversion connecting pipe, outer tube, and the one end of connector and the one end fixed connection of barrier layer, conversion connecting pipe comprise cup joint portion and pipe connection portion, cup joint portion configuration is in on the connector, the outer tube configuration is in second rubber layer and cup joint portion back, and the outer tube is fixed with second rubber layer and cup joint portion, be equipped with the assembly groove on the global of connector, be equipped with on the inner peripheral face of cup joint portion with the boss that the assembly groove corresponds makes the boss that cup joints in the portion cooperate to under withholding the effort behind in the assembly groove for cup joint portion and connector are fixed as an organic whole.
The inner circumferential surface of the conversion connecting pipe is provided with an airflow blocking part, and the other end of the connector is blocked by the airflow blocking part along the direction parallel to the axial direction of the conversion connecting pipe after being matched with the airflow blocking part.
The other end of the connector abuts against one end of the blocking component.
The outer peripheral surface of the sleeve joint part is provided with a mounting groove, one end of the outer sleeve is provided with a bulge extending along the inner side of the outer sleeve, and the bulge is matched with the mounting groove under the buckling action force, so that the outer sleeve and the sleeve joint part are fastened into a whole.
The inner wall surface of the outer sleeve is provided with teeth, and the teeth on the inner wall surface of the outer sleeve are buckled into the second rubber layer under the buckling action force.
The invention has the advantages that: the inner peripheral surface of the sleeve joint part is provided with a boss corresponding to the assembling groove, and the boss on the sleeve joint part is matched with the assembling groove under the buckling action force, so that the sleeve joint part and the connector are fixed into a whole. Because the connector and the conversion connecting pipe are fastened into a whole, the sleeve joint part is fixed with the second rubber layer through the outer sleeve, when the expansion acting force generated by airflow acts on the connector, the connector drives the conversion connecting pipe, the outer sleeve and the air conditioner pipe to move integrally, and therefore, any two parts in the connector, the conversion connecting pipe, the outer sleeve and the air conditioner pipe do not move relatively. Therefore, the situation that the connector causes the barrier layer to be compressed and deformed and bulge on the air conditioner pipe is avoided.
Drawings
Fig. 1 is a schematic view of a connection structure of an R744 air conditioning pipe and a conversion connection assembly according to the present invention;
FIG. 2 is a schematic view of a connector according to the present invention;
FIG. 3 is a schematic view of a transition connection tube of the present invention;
FIG. 4 is a schematic view of the connector mounted to the barrier layer;
FIG. 5 is a schematic view of connecting a connecting tube with a transition connecting tube;
FIG. 6 is a schematic view of the transition connection tube and the outer sleeve being buckled with the first rubber layer;
1 is the barrier layer, 2 is first rubber layer, 3 is the enhancement layer, 4 is the second rubber layer, 4a is extension portion, 5 is the connector, 5a is the assembly groove, 5b is the thin wall extension, 5c is the ring channel, 6 is the conversion connecting pipe, 6a is the portion of cup jointing, 6b is the pipe connection portion, 6c is the boss, 6d is the air current barrier unit, 6e is the mounting groove, 7 is the outer tube, 7a is the arch, 7b is the tooth, 8 is for accomodating the clearance, 9 is the connecting pipe, 10 is the sealing washer.
Detailed Description
As shown in fig. 1, the connection structure of the R744 air conditioning pipe and the conversion connection component of the present invention includes the R744 air conditioning pipe and the conversion connection component, and the following sections are explained in detail:
as shown in fig. 1, the R744 air-conditioning pipe comprises a barrier layer 1, a first rubber layer 2, a reinforcing layer 3 and a second rubber layer 4 from inside to outside; the barrier layer 1 is a corrugated pipe, the reinforcing layer 3 is formed by weaving, and the reinforcing layer 3 is preferably formed by weaving aromatic threads.
As shown in fig. 1 to 3, the switching connection assembly includes a connector 5, a switching connection tube 6, and an outer sleeve 7, wherein one end of the connector 5 is fixedly connected to one end of the barrier layer 1, one end of the connector 5 is provided with a thin-walled extension 5b extending along an axial direction of the connector, an outer diameter of the thin-walled extension 5b is smaller than an outer diameter of the connector 5, and the thin-walled extension 5b is inserted into the barrier layer 1 and is engaged with the barrier layer 1.
The conversion connecting pipe 6 is composed of a sleeve joint part 6a and a pipe connecting part 6b (as shown in fig. 2), the sleeve joint part 6a is arranged on the connector 5, the outer sleeve 7 is arranged on the second rubber layer 2 and the sleeve joint part 6a, and then the outer sleeve 7 is fixed with the second rubber layer 4 and the sleeve joint part 6 a. The connecting portion 6b is used for mounting the connecting pipe 9.
As shown in fig. 1 to 3, the connection head 5 is fixed to the socket portion 6a, and the connection head 5 is preferably fixed to the socket portion 6 a: be equipped with assembly groove 5a on the global of connector 5, be equipped with on the inner peripheral face of cup joint portion 6a with the boss 6c that the assembly groove corresponds makes the boss 6c on the portion of cup joint 6a cooperate to back in the assembly groove 5a under the withholding effort for it is fixed as an organic whole with connector 5 to cup joint portion 6 a. The circumferential surface of the connector 5 is also provided with an annular groove, and a sealing ring 10 is arranged in the annular groove.
As shown in fig. 1 to 3, the fitting groove 5a is composed of a first tapered surface and a second tapered surface which are preferentially arranged so as not to be parallel to the radial direction of the connection head 5, one end of the first tapered surface and one end of the second tapered surface intersect, and the other end of the first tapered surface and the other end of the second tapered surface extend to the peripheral surface of the connection head 5. The boss 6c is originally rectangular, but after the boss 6c is fitted into the fitting groove 5a by the crimping force, the boss 6c is deformed into a shape fitting the fitting groove 5a, and preferably, after the boss 6c is deformed, the cross section of the boss 6c is preferentially formed into a zigzag shape. The fitting groove 5a is preferably provided as an annular groove.
As shown in fig. 1 to 3, an airflow blocking member 6d is disposed on an inner circumferential surface of the switching connection pipe 6, and after the other end of the connector 5 is engaged with the airflow blocking member 6d, the other end of the connector 5 is shielded by the airflow blocking member 6d along a direction parallel to an axial direction of the switching connection pipe 6. The other end of the connector abuts against one end of the blocking component. Because the other end of the connector 5 is shielded by the airflow blocking part 6d, when the airflow in the pipe expands, the expansion acting force generated by the airflow is shielded by the airflow blocking part 6d and cannot directly act on the axial end face of the connector 5, so that the axial acting force cannot be applied to the connector when the airflow expands, and the condition that the connector 5 is axially displaced is avoided.
In addition, due to the existence of the airflow blocking part 6d, when the connector 5 and the connecting pipe 9 are installed, when the connector 5 abuts against the airflow blocking part 6d, the connecting pipe 9 abuts against the airflow blocking part 6d, so that the installation size between the connector 5 and the connecting pipe 9 and the conversion connecting pipe 6 is directly determined, and the fact that the specific length of the connecting pipe 9 required to extend into the conversion connecting pipe 6 is an appropriate installation size or the specific length of the connector 5 extending into the conversion connecting pipe 6 is an appropriate installation size does not need to be considered.
As shown in fig. 1 to 3, an installation groove 6e is formed on the outer peripheral surface of the sleeve portion 6a, a protrusion 7a extending along the inner side of the outer sleeve 7 is formed at one end of the outer sleeve 7, and the protrusion 7a is fitted into the installation groove under the buckling force, so that the outer sleeve 7 and the sleeve portion 6a are fastened into a whole.
As shown in fig. 1 to 3, teeth 7b are provided on the inner wall surface of the outer sleeve 7, and the teeth 7b on the inner wall surface of the outer sleeve 7 are engaged with the second rubber layer 4 by the engaging force. Before the outer sleeve 7 and the second rubber layer 4 are buckled, a receiving gap 8 is reserved between the outer sleeve 7 and the sleeve joint part 6a, an extension part 4a is formed at one end of the second rubber layer 4, and the extension part 4a is filled in the receiving gap 8 between the outer sleeve 7 and the sleeve joint part 6 a.
As shown in fig. 1 to 3, the process of forming the extension portion 4a is preferably performed in the following manner: when the teeth 7b of the outer sleeve 7 are buckled into the second rubber layer 4, the outer sleeve 7 forms an extrusion acting force on the second rubber layer 4 to deform the second rubber layer 4, so that the second rubber layer 4 forms an extension part 4a, and the extension part 4a is filled in the accommodating gap 8, so that the extension part 4a forms a sealing effect between the outer sleeve 7 and the second rubber layer 4 as well as between the extension part 4a and the sleeve part 6a, and therefore, in such a way, a sealing ring does not need to be additionally arranged between the sleeve part 6a and the outer sleeve 7. The extension portion 4a is pressed between the sleeve portion 6a and the outer sleeve 7, and the extension portion 4a has better sealing performance than a seal ring is mounted between the sleeve portion 6a and the outer sleeve 7.
As shown in fig. 4, the thin-walled extension 5b of the connector 5 is inserted into the barrier layer 1 and is engaged with the barrier layer 1 in an interference fit manner, one end of the connector is welded and fixed to the barrier layer 1, and the sealing ring 10 is fitted into the annular groove 5 c.
As shown in fig. 5, since the connection pipe 9 is inserted into the pipe connection portion 6b of the switching connection pipe and the connection pipe 9 is restricted by the air flow blocking member, the size of the connection pipe 9 inserted into the connection portion 6b can be restricted by the air flow blocking member, and the connection pipe 9 and the pipe connection portion 6b can be welded and fixed.
As shown in fig. 6, the fixed connection pipe 9 shown in fig. 5 and the sleeve joint part 6a of the conversion connection pipe 6 are sleeved on the connection head 5; the outer sleeve 7 is sleeved on the sleeve-joint part 6a and the second rubber layer 4, the conversion connecting pipe 6 and the outer sleeve 7 are buckled and pressed by a buckling and pressing tool, so that the boss 6c on the conversion connecting pipe 6 is matched with the boss 5a to form an assembly groove, the bulge 7a on the outer sleeve 7 is matched with the assembly groove 6e, the outer sleeve 7 forms extrusion acting force on the second rubber layer 4 to deform the second rubber layer 4, and further the second rubber layer 4 forms an extension part 4a, and the extension part 4a is filled in the accommodating gap 8 (as shown in fig. 1).
Claims (5)
1. A connecting structure of an R744 air-conditioning pipe and a conversion connecting assembly comprises the R744 air-conditioning pipe and the conversion connecting assembly, wherein the R744 air-conditioning pipe is sequentially provided with a barrier layer, a first rubber layer, a reinforcing layer and a second rubber layer from inside to outside;
the conversion connecting component comprises a connector, a conversion connecting pipe and an outer sleeve, one end of the connector is fixedly connected with one end of the barrier layer, the conversion connecting pipe consists of a sleeve joint part and a pipeline connecting part, the sleeve joint part is arranged on the connector, the outer sleeve is arranged on the second rubber layer and the sleeve joint part, and then the outer sleeve is fixed with the second rubber layer and the sleeve joint part,
the circumferential surface of the connector is provided with an assembly groove, the inner circumferential surface of the sleeve joint part is provided with a boss corresponding to the assembly groove, and the sleeve joint part and the connector are fixed into a whole after the boss on the sleeve joint part is matched into the assembly groove under the buckling action force;
the inner circumferential surface of the conversion connecting pipe is provided with an airflow blocking part, and the other end of the connector is blocked by the airflow blocking part along the direction parallel to the axial direction of the conversion connecting pipe after being matched with the airflow blocking part.
2. A connection structure of an R744 air conditioning duct and the conversion connection assembly as claimed in claim 1, wherein the other end of the connection head abuts against one end of the blocking member.
3. A connection structure of an R744 air-conditioning duct and a conversion connection assembly as claimed in claim 1, wherein the outer circumference of the socket portion is provided with a mounting groove, one end of the outer sleeve is provided with a protrusion extending along the inner side of the outer sleeve, and the protrusion is fitted into the mounting groove under the fastening force, so that the outer sleeve and the socket portion are fastened into a whole.
4. A connection structure of an R744 air-conditioning duct and a conversion connection assembly as claimed in claim 1, wherein the inner wall surface of the outer sleeve is provided with teeth, and the teeth on the inner wall surface of the outer sleeve are buckled into the second rubber layer under a buckling force.
5. A connection structure of an R744 air-conditioning duct and a conversion connection component as claimed in claim 4, wherein a receiving gap is left between the outer sleeve and the socket part before the outer sleeve and the second rubber layer are buckled;
one end of the second rubber layer is provided with an extension part which is filled in the receiving gap between the outer sleeve and the sleeve joint part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811000368.2A CN108916498B (en) | 2018-08-30 | 2018-08-30 | Connecting structure of R744 air conditioner pipe and conversion connecting assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811000368.2A CN108916498B (en) | 2018-08-30 | 2018-08-30 | Connecting structure of R744 air conditioner pipe and conversion connecting assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108916498A CN108916498A (en) | 2018-11-30 |
| CN108916498B true CN108916498B (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811000368.2A Active CN108916498B (en) | 2018-08-30 | 2018-08-30 | Connecting structure of R744 air conditioner pipe and conversion connecting assembly |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630771A (en) * | 2019-01-03 | 2019-04-16 | 南京利德东方橡塑科技有限公司 | A kind of R744 car air-conditioner hose assembly structure |
| CN111503396A (en) | 2019-01-30 | 2020-08-07 | 上海众源燃油分配器制造有限公司 | High-pressure soft and hard pipeline connection sealing system |
| CN111594683A (en) * | 2020-04-23 | 2020-08-28 | 宁波福士汽车部件有限公司 | Carbon dioxide automobile air conditioner high-pressure pipeline |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2752761C2 (en) * | 1977-11-25 | 1984-03-29 | AVS-Ing. J.C. Römer GmbH, 8023 Pullach | Method for producing a quick coupling |
| CN1260507C (en) * | 2004-04-27 | 2006-06-21 | 开泰制管(苏州)有限公司 | Pipes coupling equipment |
| CN100398895C (en) * | 2006-06-29 | 2008-07-02 | 上海市塑料研究所 | Separating, insertion and fastening type metal connector for polytetrafluoroethylene hose assembly and assembling method thereof |
| CN204493940U (en) * | 2015-03-26 | 2015-07-22 | 珠海格力电器股份有限公司 | Air-conditioner set and pipeline connecting device thereof |
| CN108317343A (en) * | 2018-04-23 | 2018-07-24 | 阔丹凌云汽车胶管有限公司 | R744 air-conditioner pipes and its connection structure |
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| PB01 | Publication | ||
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 213022 No. 18 Jinsha River Road, Xinbei District, Jiangsu, Changzhou Applicant after: Changzhou Senstar Automobile Air Conditioner Co., Ltd. Address before: 213022 No. 18 Jinshajiang Road, Hehai Street, Xinbei District, Changzhou City, Jiangsu Province Applicant before: Changzhou Senstar Automobile Air Conditioner Co., Ltd. |
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