CN109555923A - A kind of connection structure for R744 air conditioning hose assembly pipe fitting - Google Patents
A kind of connection structure for R744 air conditioning hose assembly pipe fitting Download PDFInfo
- Publication number
- CN109555923A CN109555923A CN201811209368.3A CN201811209368A CN109555923A CN 109555923 A CN109555923 A CN 109555923A CN 201811209368 A CN201811209368 A CN 201811209368A CN 109555923 A CN109555923 A CN 109555923A
- Authority
- CN
- China
- Prior art keywords
- lining core
- lining
- metal
- air conditioning
- pipe fitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- F16L33/20—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members
- F16L33/207—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose
- F16L33/2071—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member
- F16L33/2078—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member connected to the rigid member via an intermediate element
Abstract
The invention discloses a kind of connection structures for R744 air conditioning hose assembly pipe fitting, it includes metal lining, lining core, rubber bushing, iron set and metal hose, the metal lining is mounted in the inner hole of the lining core, it is equipped in the outer wall surface of lining core and withholds slot, the front end for withholding slot is the steel wire buckle section and seal section of lining core, the rubber bushing is installed on metal hose inner wall of end, and it is connected by nested mode and the outer wall of lining core, the iron set is located at outermost, and is nested in lining core and metal hose by the mode of withholding.Rubber bushing of the invention is withheld between lining core and iron set by buckle machine and is compressed into waveform, it presses to form sealing surface with the bamboo joint type groove of lining core, and tooth is withheld on iron set and is snapped into withholding in slot in lining core, the outer volume steel wire of metal hose is pressed between the trapezoidal chamber and zigzag chamber of iron set simultaneously, improves the pull-off performance of metal hose and pipe fitting.
Description
Technical field
The invention belongs to automotive air conditioning hose assembly pipe fitting fields, and in particular to one kind is used for R744 air conditioning hose assembly
The connection structure of pipe fitting.
Background technique
R744 refrigerant is with air conditioning hose assembly because it is in high pressure (14MPa), the applying working condition and automobile of high temperature (165 DEG C)
Vibration in driving process causes the leakage point of air conditioning hose assembly to betide the connecting portion of metal hose and pipe fitting, passes
System technique is all made of welding procedure and connects together, and commissure stress and vibration are easy to happen tearing, lead to air conditioning hose
Assembly fails, to reduce the service life of air conditioning hose assembly, and the metal of only identical fusing point just can be used
Welding, limits the selection of pipe fitting material.
Therefore, how a kind of air conditioning hose assembly pipe joint connecting structure is provided, nothing under vibration condition can either be met and let out
Leakage, fatigue life are long, and are able to satisfy vehicle component lightweight requirements, are that the technology of those skilled in the art's urgent need to resolve is asked
Topic.
Summary of the invention
Cause it is an object of the invention to solve the vibration that R744 air conditioning hose assembly generates in vehicle travel process
The problem of leakage, provide it is a kind of can vibration resistance be superior under high pressure, high temperature, fatigue life is long, the pipe fitting of the operation is stable connects
Binding structure.
To achieve the goals above, the technical solution adopted by the present invention is as follows:
A kind of connection structure for R744 air conditioning hose assembly pipe fitting comprising metal lining, lining core, rubber lining
Set, iron set and metal hose, the metal lining are mounted in the inner hole of the lining core, are equipped with and are withheld in the outer wall surface of lining core
Slot, the front end for withholding slot are the steel wire buckle section and seal section of lining core, and the rubber bushing is installed on metal hose end
It on portion's inner wall, and is connected by nested mode and the outer wall of lining core, the iron set is located at outermost, and by withholding mode nesting
In lining core and metal hose.
Further, the metal lining and the lining core are together with interference combinations of states.
Further, the steel wire buckle section outer wall of the lining core is equipped with trapezoidal groove, and seal section outer wall is equipped with ring
Formula groove, slot, trapezoidal groove and the bamboo joint type groove withheld are set gradually along the axial direction of lining core.
Further, the metal hose is the metal bellows of U-shaped ripple, intermediate silicon rubber, outer volume steel wire by tube wall
It is formed with straight pipe.
Further, the straight pipe extends forward from the front end of metal bellows, and the rubber bushing is installed on straight tube
Between section and lining core, and by withholding, the fitting rubber liner is on the bamboo joint type groove of lining core seal section, the outer volume steel
Silk end is nested on the trapezoidal groove of lining core steel wire buckle section.
Further, the rubber bushing is the rubber material of resistance to 165 ° of temperature, the infiltration of anti-R744 refrigerant, passes through extrusion
Machine squeezes out.
Further, the iron set inner wall is successively arranged along axial direction withholds tooth, trapezoidal chamber and zigzag chamber, wherein trapezoidal chamber
It is inside provided at least one stepped tooth, several saw-shaped teeth are provided in zigzag chamber D2.
Further, the quantity of the stepped tooth is arranged one, and the quantity of saw-shaped tooth is arranged three, and is located at outermost
The tooth that the tooth height of the saw-shaped tooth of tail end is shorter than other saw-shaped teeth is high.
Further, the iron set is deformed it by the straight pipe in metal hose, intermediate silicon rubber by buckle machine
Glue, outer volume steel wire, rubber bushing are withheld in lining core of the inner hole equipped with metal lining.
Further, withholding for the iron set withholds mode using axial, forms at least eight on the surface of iron set
The fin of radian distribution.
The beneficial effects of the present invention are: in R744 air conditioning hose assembly pipe joint connecting structure provided by the invention, metal
Hose is used to withhold and be connect with pipe fitting, is avoided the generation of weld seam, is improved fatigue life.It is sealed by rubber bushing and lining core
The sealing surface that the bamboo joint type groove of section surface is formed prevents the leakage of R744 refrigerant in pipe.In addition, compiling steel wire outside through withholding
It is embedded between the trapezoidal chamber and zigzag chamber of iron set, improves the pull-off performance of metal hose and pipe fitting.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Fig. 1 is the semi-cutaway of pipe joint structure of the invention.
Fig. 2 is the semi-cutaway of lining core in Fig. 1.
Fig. 3 is the semi-cutaway of iron set in Fig. 1.
Fig. 4 is the left view of Fig. 1.
It is attached in the figure, it is marked as 1- metal lining, 2- lining core, 3- rubber bushing, 4- iron set, 5- metal hose, 6- withhold, 7-
Fin, 21- withhold slot, 22- trapezoidal groove, 23- bamboo joint type groove, B1- steel wire buckle section, B2- seal section, 41- withhold tooth,
42- stepped tooth, 43- saw-shaped tooth, the trapezoidal chamber of D1-, D2- zigzag chamber, 51- metal bellows, the centre 52- silicon rubber, 53- are compiled outside
Steel wire, 54- straight pipe.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
As shown in Figures 1 to 4, a kind of connection structure for R744 air conditioning hose assembly pipe fitting comprising metal lining
1, lining core 2, rubber bushing 3, iron set 4 and metal hose 5, the metal lining 1 are mounted in the inner hole of the lining core 2, are serving as a contrast
The outer wall surface of core 2, which is equipped with, withholds slot 21, and the front end for withholding slot 21 is the steel wire buckle section B1 and seal section of lining core 2
B2, the rubber bushing 3 are installed on 5 inner wall of end of metal hose, and are connect by nested mode with the outer wall of lining core 2, institute
It states iron set 4 and is located at outermost, and be nested in lining core 2 and metal hose 5 by the mode of withholding.
In the present embodiment, the metal lining 2 and the lining core 1 are together with interference combinations of states.The steel of the lining core 2
Silk buckle section B1 outer wall is equipped with trapezoidal groove 22, and seal section B2 outer wall is equipped with bamboo joint type groove 23, described to withhold slot 21, ladder
Shape groove 22 and bamboo joint type groove 23 are set gradually along the axial direction of lining core 2.
In the present embodiment, the metal hose 5 is the metal bellows 51 of U-shaped ripple by tube wall, intermediate silicon rubber 52, outer
It compiles steel wire 53 and straight pipe 54 forms.The straight pipe 54 extends forward from the front end of metal bellows 51, the rubber bushing 3
It is installed between straight pipe 54 and lining core 2, and by withholding, the rubber bushing 3 is nested in the bamboo joint type ditch of 2 seal section of lining core
On slot 23, outer volume 53 end of steel wire is nested on the trapezoidal groove 22 of 2 steel wire buckle section of lining core.The rubber bushing 3 is
The rubber material that resistance to 165 ° of temperature, anti-R744 refrigerant permeate, is squeezed out by extruder.
In the present embodiment, 4 inner walls of the iron set are successively arranged along axial direction withholds tooth 41, trapezoidal chamber D1 and zigzag chamber D2,
A stepped tooth 42 is wherein provided in trapezoidal chamber D1, there are three saw-shaped teeth 43 for setting in zigzag chamber D2, and are located at outermost
The tooth that the tooth height of the saw-shaped tooth 43 of tail end is shorter than other saw-shaped teeth 43 is high.In addition, the iron set 4 makes it generate change by buckle machine
Shape withholds straight pipe 54, intermediate silicon rubber 52, outer volume steel wire 53, the rubber bushing 3 in metal hose in inner hole equipped with metal
In the lining core 2 of bushing 1.Withholding for iron set 4 withholds mode using axial, forms at least eight radians on the surface of iron set 4
The fin 7 of distribution.
The manufacturing process of this R744 air conditioning hose and pipe joint connecting structure are as follows: first serve as a contrast 1 elastic conjunction of metal lining
In the inner hole of core 2, to improve the rigidity of lining core, straight 2 one end of lining core is spun to by spin slot machine then and withholds slot 21, ladder
Shape groove 22 and four bamboo joint type grooves 23 later wash spinning good 2 surface spikes of lining core, sundries and grease, then will
Rubber bushing 4 is interference fitted on the sealed end B2 on 22 surface of lining core.Then, it is inserted into after iron being covered 4 sets on metal hose 5
In lining core 2 equipped with rubber bushing 3, require that 4 deformation of iron set is made to withhold rubber bushing 3 and gold using buckle machine installation withholding of technology
Belong to hose 5 in lining core 2.Waveform is withheld between lining core 2 and iron set 4 by buckle machine and be compressed into rubber bushing 3,
Sealing surface is formed with the pressing of the bamboo joint type groove 23 of lining core 2, and the tooth 41 of withholding on iron set 4 is snapped into lining core 2 and withholds slot
In 21, while the outer volume steel wire of metal hose 5 is pressed between the trapezoidal chamber and zigzag chamber of iron set 4, and it is soft to improve metal
The pull-off performance of pipe and pipe fitting.
The basic principles, main features and advantages of the invention have been shown and described above.Those skilled in the art
It should be appreciated that the protection scope that the above embodiments do not limit the invention in any form, all to be obtained using modes such as equivalent replacements
The technical solution obtained, falls in protection scope of the present invention.
Part that the present invention does not relate to is the same as those in the prior art or can be realized by using the prior art.
Claims (10)
1. a kind of connection structure for R744 air conditioning hose assembly pipe fitting, which is characterized in that including metal lining (1), lining
Core (2), rubber bushing (3), iron set (4) and metal hose (5), the metal lining (1) are mounted on the inner hole of the lining core (2)
In, it is equipped with and withholds slot (21) in the outer wall surface of lining core (2), the front end for withholding slot (21) is the steel wire buckle of lining core (2)
Pressure section (B1) and seal section (B2), the rubber bushing (3) are installed on metal hose (5) inner wall of end, and pass through nesting side
Formula is connect with the outer wall of lining core (2), and the iron set (4) is located at outermost, and is nested in lining core (2) and metal by the mode of withholding
On hose (5).
2. a kind of connection structure for R744 air conditioning hose assembly pipe fitting according to claim 1, which is characterized in that
The metal lining (2) and the lining core (1) are together with interference combinations of states.
3. a kind of connection structure for R744 air conditioning hose assembly pipe fitting according to claim 1, which is characterized in that
Steel wire buckle section (B1) outer wall of the lining core (2) is equipped with trapezoidal groove (22), and seal section (B2) outer wall is equipped with bamboo joint type
Groove (23), slot (21), trapezoidal groove (22) and the bamboo joint type groove (23) withheld successively are set along the axial direction of lining core (2)
It sets.
4. a kind of connection structure for R744 air conditioning hose assembly pipe fitting according to claim 3, which is characterized in that
The metal hose (5) by tube wall be U-shaped ripple metal bellows (51), intermediate silicon rubber (52), outer volume steel wire (53) and
Straight pipe (54) composition.
5. a kind of connection structure for R744 air conditioning hose assembly pipe fitting according to claim 4, which is characterized in that
The straight pipe (54) extends forward from the front end of metal bellows (51), and the rubber bushing (3) is installed on straight pipe (54)
Between lining core (2), and by withholding, the rubber bushing (3) is nested in the bamboo joint type groove (23) of lining core (2) seal section
On, described outer volume steel wire (53) end is nested on the trapezoidal groove (22) of lining core (2) steel wire buckle section.
6. a kind of connection structure for R744 air conditioning hose assembly pipe fitting, feature exist according to claim 1 or 5
In the rubber bushing (3) is the rubber material of resistance to 165 ° of temperature, the infiltration of anti-R744 refrigerant, is squeezed out by extruder.
7. a kind of connection structure for R744 air conditioning hose assembly pipe fitting according to claim 1, which is characterized in that
Iron set (4) inner wall is successively arranged along axial direction withholds tooth (41), trapezoidal chamber (D1) and zigzag chamber (D2), wherein trapezoidal chamber
(D1) it is provided at least one stepped tooth (42) in, is provided with several saw-shaped teeth (43) in zigzag chamber (D2).
8. a kind of connection structure for R744 air conditioning hose assembly pipe fitting according to claim 7, which is characterized in that
The quantity of the stepped tooth (42) is arranged one, and the quantity of saw-shaped tooth (43) is arranged three, and is located at the saw-shaped of outermost tail end
The tooth that the tooth height of tooth (43) is shorter than other saw-shaped teeth (43) is high.
9. a kind of connection structure for R744 air conditioning hose assembly pipe fitting according to claim 1 or claim 7, feature exist
In, the iron set (4) by buckle machine make its be deformed by metal hose straight pipe (54), intermediate silicon rubber (52),
Outer volume steel wire (53), rubber bushing (3) are withheld in lining core (2) of the inner hole equipped with metal lining (1).
10. a kind of connection structure for R744 air conditioning hose assembly pipe fitting according to claim 9, feature exist
In withholding for the iron set (4) withholds mode using axial, forms at least eight radian distributions on the surface of the iron set (4)
Fin (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811209368.3A CN109555923A (en) | 2018-10-17 | 2018-10-17 | A kind of connection structure for R744 air conditioning hose assembly pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811209368.3A CN109555923A (en) | 2018-10-17 | 2018-10-17 | A kind of connection structure for R744 air conditioning hose assembly pipe fitting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109555923A true CN109555923A (en) | 2019-04-02 |
Family
ID=65865162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811209368.3A Pending CN109555923A (en) | 2018-10-17 | 2018-10-17 | A kind of connection structure for R744 air conditioning hose assembly pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109555923A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110793107A (en) * | 2019-09-10 | 2020-02-14 | 南京利德东方橡塑科技有限公司 | Air conditioner hose assembly meeting novel refrigerant and manufacturing method thereof |
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|---|---|---|---|---|
| CN2828513Y (en) * | 2005-11-02 | 2006-10-18 | 芜湖双翼液压件制造公司 | Wire wrapped superhigh-pressure hose assembly |
| CN201944461U (en) * | 2010-12-29 | 2011-08-24 | 常州腾龙汽车零部件股份有限公司 | High strength low consumable withhold-type soft and hard tubes connecting structure |
| CN203453680U (en) * | 2013-07-11 | 2014-02-26 | 天津市大千管业有限公司 | A welding-free metal flexible pipe |
| CN203656416U (en) * | 2013-12-31 | 2014-06-18 | 和峻（广州）胶管有限公司 | Buckling type hydraulic rubber hose joint with high pulse performance |
| CN203809915U (en) * | 2014-01-23 | 2014-09-03 | 兖矿集团有限公司 | Hose nippler for high-pressure rubber hose bursting test |
| CN207261850U (en) * | 2017-07-20 | 2018-04-20 | 宁波星箭航空机械制造有限公司 | A kind of flexible pipe of composite material component |
| CN207621541U (en) * | 2017-10-18 | 2018-07-17 | 攀钢集团工程技术有限公司 | A kind of hydraulic flexible pipe joint |
-
2018
- 2018-10-17 CN CN201811209368.3A patent/CN109555923A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2828513Y (en) * | 2005-11-02 | 2006-10-18 | 芜湖双翼液压件制造公司 | Wire wrapped superhigh-pressure hose assembly |
| CN201944461U (en) * | 2010-12-29 | 2011-08-24 | 常州腾龙汽车零部件股份有限公司 | High strength low consumable withhold-type soft and hard tubes connecting structure |
| CN203453680U (en) * | 2013-07-11 | 2014-02-26 | 天津市大千管业有限公司 | A welding-free metal flexible pipe |
| CN203656416U (en) * | 2013-12-31 | 2014-06-18 | 和峻（广州）胶管有限公司 | Buckling type hydraulic rubber hose joint with high pulse performance |
| CN203809915U (en) * | 2014-01-23 | 2014-09-03 | 兖矿集团有限公司 | Hose nippler for high-pressure rubber hose bursting test |
| CN207261850U (en) * | 2017-07-20 | 2018-04-20 | 宁波星箭航空机械制造有限公司 | A kind of flexible pipe of composite material component |
| CN207621541U (en) * | 2017-10-18 | 2018-07-17 | 攀钢集团工程技术有限公司 | A kind of hydraulic flexible pipe joint |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110793107A (en) * | 2019-09-10 | 2020-02-14 | 南京利德东方橡塑科技有限公司 | Air conditioner hose assembly meeting novel refrigerant and manufacturing method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190402 |