Copper lining core riveting internal thread connector

Abstract

The utility model relates to the technical field of vehicle connector accessories, in particular to a copper lining core riveting internal thread connector which comprises a connector body, a lining core and an annular film bag, the connector body comprises a connecting part and a buckling part, the connecting part is provided with a connecting hole, the connecting hole is provided with an internal thread, the buckling part is provided with a buckling hole, and the buckling hole is provided with an external thread. An assembling hole is further formed between the connecting hole and the buckling hole, the lining core comprises an abutting part, a middle part, an inner supporting part and a center hole, the inner supporting part penetrates through the assembling hole and extends into the buckling hole, the middle part is arranged in the assembling hole, the abutting part is arranged in the connecting hole, the center hole penetrates through the lining core, and glue is arranged in the annular film bag; when the buckling part is buckled and pressed, the annular film bag is broken, and the end part and the side wall of the rubber pipe are filled with glue, so that the rubber pipe has the advantages of higher connection strength after extending into the buckling and pressing hole, better sealing performance and suitability for high-pressure oil ways and high-frequency bumpy road conditions.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle joint fittings, more particularly to a copper lining core riveting inner thread joint. BACKGROUND

[0002] The inner thread joint with lining core is widely used in automobile pipelines, and the inner thread joint has an inner thread at one end of the joint.

[0003] The patent document (CN114636034A) discloses a lining core embedded copper brake joint. Figure 2 As can be seen from the description and drawings of the patent document, the lining core embedded copper brake joint includes a joint body and a lining core, the joint body has a connecting cavity, a communication channel and a plug-in cavity, the lining core is arranged through the communication channel, and the lining core has a through hole. It should be noted that during connection, a rubber tube is inserted into the plug-in cavity, and the inner side wall of the rubber tube is attached to the lining core and the cavity wall of the plug-in cavity respectively by buckling one end of the joint body, so as to meet the sealing requirement in normal use, that is, oil is not easy to penetrate into the space between the inner wall of the rubber tube and the outer wall of the lining core, and finally leak out from the space between the outer wall of the rubber tube and the cavity wall of the plug-in cavity. However, in the high-pressure oil path input situation, due to the large hydraulic pressure, and the off-road vehicle type in the process of continuous high-frequency jolting, or the rubber tube makes a small axial movement relative to the plug-in cavity and reduces the area of the sealing surface, the risk of oil leakage is increased.

[0004] Therefore, there is a demand for a copper lining core riveting inner thread joint with higher connection strength after the rubber tube is inserted into the buckling hole, better sealing performance, and applicability to high-pressure oil paths and high-frequency jolting road conditions. CONTENT OF THE UTILITY MODEL

[0005] The main purpose of the present application is to provide a copper lining core riveting inner thread joint, wherein the copper lining core riveting inner thread joint includes a joint body, a lining core and an annular film bag, the joint body includes a connecting part and a buckling part, the connecting part has a connecting hole with an inner thread, the buckling part has a buckling hole, and the connecting hole and the buckling hole further have an assembly hole, the lining core includes an abutting part, an intermediate part, an inner support part and a central hole, the inner support part passes through the assembly hole and extends into the buckling hole, the intermediate part is arranged in the assembly hole, the abutting part is arranged in the connecting hole, the central hole penetrates through the lining core, and the annular film bag is provided with glue, and the annular film bag is located at one end of the buckling hole close to the assembly hole. When the buckling part is buckled, the annular film bag is broken and the glue fills the end and the side wall of the rubber tube, so as to realize the advantages of higher connection strength of the rubber tube after being inserted into the buckling hole, better sealing performance, and applicability to high-pressure oil paths and high-frequency jolting road conditions.

[0006] Another object of the present application is to provide a copper core rivet inner wire joint, wherein the connection between the intermediate portion and the inner support portion has a transition fillet, and the connection between the intermediate portion and the inner support portion extends into the buckling hole by a predetermined distance so as to facilitate the sharp edge thereof to tear the annular film bag.

[0007] To achieve the above at least one object, the present application provides a copper core rivet inner wire joint, wherein the copper core rivet inner wire joint comprises:

[0008] a joint body, the joint body comprising a connecting portion and a buckling portion, the connecting portion having a connecting hole with internal threads, the buckling portion having a buckling hole, and the connecting hole and the buckling hole further having an assembly hole therebetween; and

[0009] a core, the core comprising an abutting portion, an intermediate portion, an inner support portion, and a central hole, the inner support portion extending through the assembly hole and into the buckling hole, the intermediate portion being disposed in the assembly hole, the abutting portion being disposed in the connecting hole, and the central hole extending through the core; and

[0010] an annular film bag, the annular film bag being provided with glue therein, and the annular film bag being located at one end of the buckling hole close to the assembly hole.

[0011] In one or more embodiments of the present application, the connection between the intermediate portion and the inner support portion has a transition fillet, and the connection between the intermediate portion and the inner support portion extends into the buckling hole by a predetermined distance.

[0012] In one or more embodiments of the present application, the side wall of the inner support portion has a plurality of annular grooves.

[0013] In one or more embodiments of the present application, the abutting portion has a tapered surface.

[0014] In one or more embodiments of the present application, the abutting portion further has a notch groove, the notch groove being located at an end of the tapered surface away from the inner support portion, and the core further comprises a magnetic ring, the magnetic ring being disposed in the notch groove.

[0015] In one or more embodiments of the present application, the outer side wall of the connecting portion further has an annular groove.

[0016] In one or more embodiments of the present application, the outer side surface of the connecting portion further has a clamping portion.

[0017] In one or more embodiments of the present application, the core is made of copper, and the core is in interference fit with the assembly hole.

[0018] In one or more embodiments of this application, the end face of the inner support portion opposite to the middle portion is flush with the end face of the fastening portion.

[0019] In this embodiment, the copper-lined crimped internal threaded connector includes a connector body, a liner, and an annular film bag. The connector body includes a connecting part and a fastening part. The connecting part has a connecting hole with an internal thread. The fastening part has a crimping hole. An assembly hole is also provided between the connecting hole and the crimping hole. The liner includes an abutting part, a middle part, an inner support part, and a central hole. The inner support part passes through the assembly hole and extends into the crimping hole. The middle part is placed in the assembly hole. The abutting part is placed in the connecting hole. The central hole passes through the liner. The annular film bag contains adhesive. The annular film bag is located at the end of the crimping hole near the assembly hole. When the fastening part is crimped, the annular film bag ruptures and the adhesive fills the end and sidewall of the hose. This achieves higher connection strength and better sealing performance after the hose extends into the crimping hole, making it suitable for high-pressure oil circuits and high-frequency bumpy road conditions. Attached Figure Description

[0020] These and / or other aspects and advantages of this application will become clearer and more readily understood from the following detailed description of embodiments of this application taken in conjunction with the accompanying drawings, wherein:

[0021] Figure 1 The figure shows a structural schematic diagram of a copper-lined core riveted internal threaded connector according to this application;

[0022] Figure 2 The diagram illustrates the structure of an annular film bag;

[0023] Figure 3 The illustration shows a cross-sectional view of an annular film bag;

[0024] Figure 4 The diagram shows... Figure 1 A magnified view of a portion at point C;

[0025] Figure 5 The diagram shows... Figure 1 A magnified view of a portion at point D;

[0026] Figure 6 The figure shows a structural schematic diagram of a copper-lined core riveted internal thread connector according to a certain perspective. Detailed Implementation

[0027] The terms and words used in the following specification and claims are not limited to their literal meaning, but are used solely by the inventors to enable a clear and consistent understanding of this application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of this application is provided for illustrative purposes only and not for the purpose of limiting the application as defined in the appended claims and their equivalents.

[0028] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0029] While ordinal numbers such as "first," "second," etc., will be used to describe various components, there is no limitation on which components are used herein. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component, without departing from the teachings of the utility model concept. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. It will also be understood that the terms “comprising” and / or “having” as used in this specification specify the presence of the described features, numbers, steps, operations, components, elements or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements or groups thereof.

[0031] Schematic copper-lined crimped internal thread connector, for reference. Figures 1 to 6 A preferred embodiment of the present invention provides a copper-lined crimped internal threaded connector, comprising a connector body 10 and a lining core 20.

[0032] Specifically, such as Figure 1 As shown, the connector body 10 includes a connecting portion 101 and a fastening portion 102. The connecting portion 101 has a connecting hole 1011 with an internal thread. The fastening portion 102 has a fastening hole 1021. An assembly hole 103 is also provided between the connecting hole 1011 and the fastening hole 1021. In addition, the liner 20 includes an abutting portion 201, a middle portion 202, an inner support portion 203, and a central hole 204. The inner support portion 203 passes through the assembly hole 103 and extends into the fastening hole 1021. The middle portion 202 is placed in the assembly hole 103. The abutting portion 201 is placed in the connecting hole 1011. The central hole 204 penetrates the liner 20.

[0033] It should be noted that during connection, both ends of the connector body 10 are connected to the rigid tube 90 and the rubber tube 91, respectively. More specifically, one end of the rigid tube 90 extends into the connection hole 1011 and is threaded into the connection hole 1011. The rubber tube 91 extends into the crimping hole 1021. It should be pointed out that at this time, the outer wall of the rubber tube 91 is in contact with or close to the wall of the crimping hole 1021, and the inner wall of the rubber tube 91 is in contact with the inner wall of the liner 20. The outer wall of the inner support portion 203 is close to or adjacent to it. Then, a fastening force is applied to the fastening portion 102 by a fastening device, and the fastening portion 102 undergoes a diameter reduction deformation. The rubber tube 91 placed in the fastening hole 1021 is subjected to a radial pressure and deforms, and the outer wall of the rubber tube 91 is tightly fitted with the hole wall of the fastening hole 1021, and the inner wall of the rubber tube 91 is tightly fitted with the outer wall of the inner support portion 203.

[0034] However, in some off-road vehicles, due to the vehicle body frequently and for extended periods traveling on bumpy roads, the up-and-down movement of the vehicle body causes the hose 91 to undulate, generating a pulling force that pulls the hose 91 outward from the crimping hole 1021. Under prolonged pulling, the hose 91 may slightly shift along the axis of the crimping hole 1021, reducing the overall contact area between the inner wall of the hose 91 and the inner support 203, as well as the overall contact area between the outer wall of the hose 91 and the wall of the crimping hole 1021. If the copper-lined crimped internal threaded connector is still used in the high-pressure oil circuit at this time, the risk of oil seeping into the area between the inner wall of the hose 91 and the inner support 203 increases, posing a potential leakage risk.

[0035] In view of this, for off-road vehicles and high-pressure oil circuit applications, in this application, the copper-lined core riveted internal thread connector further includes an annular film bag 30, which contains adhesive and is located at the end of the crimping hole 1021 near the assembly hole 103.

[0036] It should be noted that after the tubing 91 is inserted into the crimping hole 1021, the end of the tubing 91 abuts against the annular film bag 30. Subsequently, during the process of the external crimping device crimping the fastening part 102, the annular film bag 30 is ruptured under pressure, causing the glue inside the annular film bag 30 to flow out and fill the end and side of the tubing 91 near the abutment part 201, thus sealing the end and side of the tubing 91 near the abutment part 201. After the glue solidifies, this area is sealed by the glue, effectively preventing oil from entering. Furthermore, after the adhesive solidifies, it also strengthens the bonding connection between the end and side of the hose 91 near the abutment 201 and the wall of the crimping hole 1021, as well as the end of the inner support 203 near the middle part 202. This improves the connection strength between the hose 91 and the copper core riveted internal thread connector, effectively reducing the risk of the hose 91 being pulled out under bumpy conditions. Compared with the prior art, this technology has the advantages of higher connection strength after the hose 91 is inserted into the crimping hole 1021, better sealing, and suitability for high-pressure oil circuits and high-frequency bumpy road conditions.

[0037] Specifically, such as Figure 2 and Figure 3 As shown, the annular film bag 30 includes a lower film body 301 and an upper film body 302. The lower film body 301 is semi-circular. The lower film body 301 is placed on a mold and the two sides of the lower film body 301 are pressed together by a clamping member. At this time, the middle section of the lower film body 301 is concave. Glue is poured into this concave cavity. It should be noted that both sides of the lower film body 301 have hot melt adhesive. After the glue fills the concave cavity in the middle section of the lower film body 301, the upper film body 302 is placed on the lower film body 301, and the two sides of the lower film body 301 are heated to melt the hot melt adhesive, thus obtaining the annular film bag 30 containing glue.

[0038] Furthermore, such as Figure 4 As shown, the connection between the middle part 202 and the inner support part 203 has a transition fillet 205, and the connection between the middle part 202 and the inner support part 203 extends into the pressing hole 1021 by a predetermined distance.

[0039] It should be noted that by utilizing the sharp edge formed at the transition fillet 205 on the middle part 202 and the inner support part 203, and by extending the connection between the middle part 202 and the inner support part 203 into the pressing hole 1021 by a predetermined distance, when the annular film bag 30 is compressed, the annular film bag 30 is easily cut by the sharp edge formed at the transition fillet 205 on the middle part 202 and the inner support part 203, so that the glue can flow out.

[0040] Furthermore, to further improve the sealing performance and connection strength between the hose 91 and the inner support 203, such as... Figure 1 As shown, the sidewall of the inner support portion 203 has a plurality of annular grooves 2031. When the tubing 91 is compressed, the inner wall of the tubing 91 is embedded in the annular grooves 2031 of the inner support portion 203.

[0041] Furthermore, to improve the sealing performance of the connecting hole 1011, the abutting part 201 has a tapered surface 2011. It should be noted that the end of the outer rigid tube 90 also has a tapered surface 2011 with the same taper, so that the abutting part 201 and the outer rigid tube 90 can abut against each other.

[0042] Furthermore, since metal parts in the clutch and gearbox generate metal shavings after long-term use or wear, and these shavings are carried by the oil flow, it is necessary to install means for handling metal shavings in the various pipelines of the vehicle body. In this application, such as Figure 5 As shown, the abutting part 201 also has a notch 2012, the notch 2012 is located at one end of the conical surface 2011 away from the inner support part 203, and the liner core 20 also includes a magnetic ring 40, the magnetic ring 40 is disposed in the notch 2012.

[0043] It should be noted that the core 20 is made of copper, so the magnetic ring 40 will not magnetize the core 20. In addition, the magnetic ring 40 is fixedly connected to the abutment part 201 by means of metal adhesive. When the oil flows through the conical surface 2011, the tiny metal debris in the oil is easily attracted by the magnetic ring 40.

[0044] Furthermore, to facilitate the auxiliary fixing of the external rigid tube 90 to the connecting part 101, such as... Figure 1 As shown, the outer wall of the connecting part 101 also has an annular groove 2031, and the outer rigid tube 90 has a threaded hole. By screwing the bolt into the threaded hole and abutting against the bottom wall of the annular groove 2031, the risk of circumferential rotation between the outer rigid tube 90 and the connecting part 101 is reduced.

[0045] Furthermore, to facilitate the rotation of the connector body 10 when the external rigid tube 90 is threadedly connected to the connecting hole 1011, such as... Figure 6 As shown, the outer side of the connecting part 101 also has a clamping part 1012, which includes a plurality of parallel and spaced planes.

[0046] Furthermore, to fix the position of the liner 20, the liner 20 is interference-fitted with the mounting hole 103. More specifically, the liner 20 is riveted into the mounting hole 103 by riveting to achieve the interference fit between the liner 20 and the mounting hole 103.

[0047] In addition, in this embodiment of the application, the end face of the inner support portion 203 that is away from the middle portion 202 is flush with the end face of the fastening portion 102.

[0048] In summary, the copper-lined crimped internal threaded connector described in the embodiments of this application is explained, which provides the copper-lined crimped internal threaded connector with advantages such as higher connection strength after the hose extends into the crimping hole, better sealing performance, and suitability for high-pressure oil circuits and high-frequency bumpy road conditions.

[0049] It is worth mentioning that, in this embodiment, the copper-lined crimped internal thread connector has a simple structure, does not involve complex manufacturing processes or expensive materials, and is highly economical. At the same time, for manufacturers, the copper-lined crimped internal thread connector provided in this application is easy to produce and inexpensive, which is more conducive to controlling production costs and further facilitates product promotion and use.

[0050] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The function and structural principle of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from these principles.

Claims

1. A copper-lined core riveted internal threaded connector, characterized in that: The copper-lined riveted internal threaded connector includes A connector body, the connector body including a connecting portion and a fastening portion, the connecting portion having a connecting hole with an internal thread, the fastening portion having a crimping hole, and an assembly hole between the connecting hole and the crimping hole; and A liner core, the liner core including an abutting part, a middle part, an inner support part and a central hole, the inner support part passing through the mounting hole and extending into the snapping hole, the middle part being placed in the mounting hole, the abutting part being placed in the connecting hole, and the central hole penetrating the liner core; as well as An annular film bag containing adhesive is located at one end of the snap-fit ​​hole near the assembly hole.

2. The copper-lined core riveted internal threaded connector according to claim 1, characterized in that: The connection between the middle part and the inner support part has a transition rounded corner, and the connection between the middle part and the inner support part extends into the buckling hole by a predetermined distance.

3. The copper-lined core riveted internal threaded connector according to claim 2, characterized in that: The sidewall of the inner support has several annular grooves.

4. The copper-lined core riveted internal threaded connector according to claim 3, characterized in that: The abutting part has a conical surface.

5. The copper-lined core riveted internal threaded connector according to claim 4, characterized in that: The abutting part also has a notch groove, which is located at one end of the conical surface away from the inner support part. The liner also includes a magnetic ring, which is disposed in the notch groove.

6. The copper-lined core riveted internal threaded connector according to claim 5, characterized in that: The outer wall of the connecting part also has an annular groove.

7. The copper-lined core riveted internal threaded connector according to claim 6, characterized in that: The outer side of the connecting part also has a clamping part.

8. The copper-lined core riveted internal threaded connector according to claim 7, characterized in that: The core is made of copper, and the core is interference-fitted with the mounting hole.

9. The copper-lined core riveted internal threaded connector according to claim 8, characterized in that: The end face of the inner support portion that is away from the middle portion is flush with the end face of the fastening portion.

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