CN119834136A - Polyurethane sleeve for new energy automobile wire harness - Google Patents
Polyurethane sleeve for new energy automobile wire harness Download PDFInfo
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- CN119834136A CN119834136A CN202510173281.9A CN202510173281A CN119834136A CN 119834136 A CN119834136 A CN 119834136A CN 202510173281 A CN202510173281 A CN 202510173281A CN 119834136 A CN119834136 A CN 119834136A
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- sleeve
- polyurethane
- link
- separation
- protective layer
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Abstract
The invention relates to the technical field of cable sleeves, and discloses a polyurethane sleeve of a new energy automobile wire harness, which is formed by sequentially connecting and combining end-side sleeve links and middle sleeve links, wherein each sleeve link of the polyurethane sleeve is provided with an insulating protective layer, a polyurethane reinforcing layer and an outer protective layer which are sequentially nested from inside to outside, the outer protective layer is made of a light-transmitting material, the polyurethane reinforcing layer is formed by orderly weaving a plurality of polyurethane strips polymerized into strips, and polyurethane coating in the polyurethane enhancement layer is provided with ultraviolet fluorescent coating, and ultraviolet fluorescent coating has the function of evenly developing under ultraviolet lamp irradiation, and the even function of developing under ultraviolet lamp irradiation that ultraviolet fluorescent coating has can receive the influence of polyurethane's structure flaw, only need change corresponding sleeve pipe link after detecting the flaw, has solved the great problem of cable sleeve pipe cost of maintenance in prior art.
Description
Technical Field
The invention relates to the technical field of cable sleeves, in particular to a polyurethane sleeve of a new energy automobile wire harness.
Background
The electrical system of the new energy automobile usually works in a high-voltage environment, the protection requirement on the wire harness is very high, particularly in a high-voltage environment, the traditional sleeve cannot provide enough mechanical strength and electrical insulation, faults or damages easily occur, therefore, the sleeve with the polyurethane reinforcing layer is required to be used, the wire harness of the new energy automobile needs to work in environments such as extreme temperature, humidity and vibration, the performance requirement on the sleeve material is very high, the sleeve needs to be maintained and replaced after the working environment is blemished, the cost required for overall maintenance and replacement of the sleeve with the blemish at a certain position is relatively high, and the problem of cost waste exists.
Disclosure of Invention
The invention aims to provide a polyurethane sleeve of a wire harness of a new energy automobile, and aims to solve the problem of high maintenance cost of the cable sleeve in the prior art.
The invention is realized in this way, the invention provides a polyurethane sleeve of a new energy automobile wire harness, comprising:
the automobile wire harness protection device comprises a plurality of polyurethane sleeve links which can be mutually connected, wherein each polyurethane sleeve link comprises an end sleeve link and an intermediate sleeve link, the end sleeve links are arranged at two ends of a wire harness to be protected in an automobile, and the intermediate sleeve links are arranged at positions between two ends of the wire harness;
The middle sleeve links comprise middle sleeve parts and middle connecting parts, the middle connecting parts are arranged at two ends of the middle sleeve parts, and the middle sleeve links are fixedly connected with each other through the middle connecting parts;
The end side sleeve link comprises an end side sleeve part, an end side connecting part and an end side mounting part, wherein the end side connecting part and the end side mounting part are respectively arranged at two ends of the end side sleeve part, the end side sleeve link is arranged at the tail end of a wire harness which needs to be protected in an automobile through the end side mounting part, and the end side sleeve link is fixedly connected with the middle connecting part of the middle sleeve link through the end side connecting part;
the middle sleeve part of the middle sleeve link and the end sleeve part of the end sleeve link are respectively provided with an insulating protective layer, a polyurethane reinforcing layer and an outer protective layer which are nested in sequence from inside to outside;
The outer protective layer is made of a light-transmitting material, the polyurethane enhancement layer is formed by orderly weaving a plurality of polyurethane strips polymerized into strips, the polyurethane coating in the polyurethane enhancement layer is provided with an ultraviolet fluorescent coating, the ultraviolet fluorescent coating has a function of uniformly developing color under the irradiation of ultraviolet lamps, and the function of uniformly developing color under the irradiation of the ultraviolet lamps of the ultraviolet fluorescent coating can be influenced by structural flaws of the polyurethane.
Preferably, the intermediate engagement portion and the end-side engagement portion each comprise a sliding nesting joint, a fixing buckle, and an outer sealing collar;
The sliding nested joint has the function of mutual insertion and fixation, and the fixing buckle has the function of locking and fixation;
The detachable outer sleeve of the outer sealing ring is arranged on the middle sleeve part to seal and protect the joint position of the middle sleeve part and the rest structure.
Preferably, the intermediate sleeve portion and the end sleeve portion have an insertion groove at a position prepared for disposing the outer seal ring, the insertion groove being for holding the outer seal ring and the intermediate sleeve portion in a tightly inserted state.
Preferably, the outer seal collar comprises a silicone substrate and a fluorinated polymer coating.
Preferably, the middle sleeve part and the end sleeve part are provided with a first separation sleeve and a second separation sleeve, the first separation sleeve and the second separation sleeve are provided with an interlaced embedded structure, and the first separation sleeve and the second separation sleeve are detachably closed and installed through the interlaced embedded structure;
the middle sleeve part and the end sleeve part are respectively provided with an insulating protective layer, a polyurethane reinforcing layer and an outer protective layer which are arranged in the first separating sleeve and the second separating sleeve in a separated mode.
Preferably, the staggered embedding structure is disposed on the outer protection layer of the first separation sleeve and the second separation sleeve, and the staggered embedding structure of the outer protection layer of the first separation sleeve and the second separation sleeve comprises at least two levels, and the staggered embedding positions of the two levels are different.
Preferably, the staggered embedded structure comprises a concave part and a convex part which are sequentially arranged;
The edges of the concave part and the convex part are provided with a certain inclination, and the inclination of the concave part is matched with the inclination of the convex part so as to realize the fastening and jogging of the concave part and the convex part.
The invention provides a polyurethane sleeve of a new energy automobile wire harness, which has the following beneficial effects:
According to the invention, the polyurethane sleeve arranged on the cable is obtained by sequentially connecting and combining the end sleeve links and the middle sleeve links, each sleeve link of the polyurethane sleeve is provided with the insulation protection layer, the polyurethane reinforcing layer and the outer protection layer which are sequentially nested from inside to outside, the outer protection layer is made of a light-transmitting material, the polyurethane reinforcing layer is formed by orderly weaving a plurality of polyurethane strips polymerized into a strip shape, the polyurethane coating in the polyurethane reinforcing layer is provided with an ultraviolet fluorescent coating, the ultraviolet fluorescent coating has the function of uniformly developing color under the irradiation of ultraviolet lamps, the function of uniformly developing color under the irradiation of the ultraviolet lamps can be influenced by structural flaws of the polyurethane, and when the flaws are detected, the corresponding sleeve links are only required to be replaced, so that the problem of high maintenance cost of the cable sleeve in the prior art is solved.
Drawings
Fig. 1 is a schematic structural view of a polyurethane sleeve of a new energy automobile wire harness provided by an embodiment of the invention;
Reference numerals 1-insulating protective layer, 2-polyurethane reinforcing layer and 3-outer protective layer.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The implementation of the present invention will be described in detail below with reference to specific embodiments.
Referring to FIG. 1, a preferred embodiment of the present invention is provided.
The invention provides a polyurethane sleeve of a wire harness of a new energy automobile, which consists of a plurality of polyurethane sleeve links which can be mutually connected, wherein each polyurethane sleeve link comprises an end-side sleeve link and an intermediate sleeve link, the end-side sleeve links are arranged at two ends of the wire harness to be protected in the automobile, and the intermediate sleeve links are arranged at positions between the two ends of the wire harness.
It can be understood that the sleeve provided by the technical scheme of the invention adopts a multi-section structure which is formed by sequentially connecting, the spliced unit comprises two end side sleeve links and a plurality of middle sleeve links, the end side sleeve links are links which are arranged at two ends of a wire bundle and are abutted against an automobile body, and the middle sleeve links are links which are arranged between the two end side sleeve links and are sequentially connected.
The middle sleeve links comprise middle sleeve parts and middle connecting parts, the middle connecting parts are arranged at two ends of the middle sleeve parts, the middle sleeve links are fixedly connected with each other through the middle connecting parts, the end sleeve links comprise end sleeve parts, end connecting parts and end mounting parts, the end connecting parts and the end mounting parts are respectively arranged at two ends of the end sleeve parts, the end sleeve links are arranged at tail ends of wire harnesses which are needed to be protected in an automobile through the end mounting parts, and the end sleeve links are fixedly connected with the middle connecting parts of the middle sleeve links through the end connecting parts.
It can be seen that the intermediate sleeve link has a certain structural similarity to the end-side sleeve link, and the difference is mainly that the two ends of the intermediate sleeve portion in the intermediate sleeve link are intermediate engaging portions, and the two ends of the end-side engaging link are end-side engaging portions and end-side mounting portions, respectively.
Further, the function performed by the end-side engaging portion of the end-side sleeve link is identical to the function performed by the intermediate engaging portion of the intermediate sleeve link, and the end-side mounting portion of the end-side sleeve link is used for fixedly mounting the end-side sleeve portion on the vehicle body, thereby realizing the full-range coverage of the wire harness.
More specifically, the middle sleeve part of the middle sleeve link and the end sleeve part of the end sleeve link are respectively provided with an insulation protection layer, a polyurethane reinforcing layer and an outer protection layer which are sequentially nested from inside to outside.
It should be noted that, the insulation protection layer is attached to the innermost layer of the wire harness, and has the functions of insulating and protecting the wire harness, preventing electrical contact between internal cables or between the cables and the outside, protecting the wire harness from internal friction and abrasion, providing a certain buffering function, and ensuring the safety and stability of the wire harness in a high-temperature and high-pressure environment.
More specifically, the polyurethane reinforcing layer provides main mechanical strength and rigidity, ensures that the sleeve can withstand external mechanical stress and high pressure, has excellent mechanical properties and high temperature resistance, and can effectively disperse and resist external impact and pressure.
More specifically, the outer protective layer provides external physical protection against abrasion, chemical corrosion, and environmental factors (e.g., ultraviolet light, moisture, etc.).
Further, the outer protective layer is made of a light-transmitting material, the polyurethane enhancement layer is formed by orderly weaving a plurality of polyurethane strips polymerized into strips, the polyurethane coating in the polyurethane enhancement layer is provided with an ultraviolet fluorescent coating, the ultraviolet fluorescent coating has a function of uniformly developing color under the irradiation of ultraviolet lamps, and the function of uniformly developing color under the irradiation of the ultraviolet lamps of the ultraviolet fluorescent coating can be influenced by structural flaws of the polyurethane.
It should be noted that, through coating ultraviolet fluorescent coating on the polyurethane of ordered weaving for ultraviolet fluorescent coating can be in the state of developing color under receiving ultraviolet lamp irradiation, and ultraviolet fluorescent coating's color development effect and polyurethane's structural integrity are correlated with, when the tiny crack that is difficult to observe appears in polyurethane, the homogeneity degree of the ultraviolet fluorescent coating of coating on the polyurethane can be destroyed, thereby can't carry out even fluorescence development under the condition of receiving ultraviolet lamp irradiation, and the color development effect in the position of the tiny crack that appears being difficult to observe can appear comparatively obvious difference, thereby can discern whether polyurethane has potential hidden danger.
More specifically, since the outer protective layer is made of transparent material, the polyurethane sleeve can be irradiated by an ultraviolet lamp, so that the ultraviolet fluorescent coating in the polyurethane reinforcing layer receives ultraviolet irradiation to perform fluorescent color development, and the detection of minor flaws of the orderly woven polyurethane in the polyurethane reinforcing layer can be performed.
It can be understood that after the polyurethane is detected by the ultraviolet lamp, whether the polyurethane with flaws exists in the end-side sleeve link and the middle sleeve link can be confirmed, and further, the flaw type and degree of the polyurethane at the position can be judged by the abnormal degree of fluorescent color development of the ultraviolet fluorescent coating under the irradiation of the ultraviolet lamp, so that the subsequent treatment can be determined.
Furthermore, because the polyurethane sleeve of the wiring harness is constructed by adopting a multi-section structure in the technical scheme of the invention, when the polyurethane of a certain link has flaws, the link can be replaced, thereby realizing efficient maintenance and controlling the maintenance cost.
The invention provides a polyurethane sleeve of a new energy automobile wire harness, which has the following beneficial effects:
According to the invention, the polyurethane sleeve arranged on the cable is obtained by sequentially connecting and combining the end sleeve links and the middle sleeve links, each sleeve link of the polyurethane sleeve is provided with the insulation protection layer, the polyurethane reinforcing layer and the outer protection layer which are sequentially nested from inside to outside, the outer protection layer is made of a light-transmitting material, the polyurethane reinforcing layer is formed by orderly weaving a plurality of polyurethane strips polymerized into a strip shape, the polyurethane coating in the polyurethane reinforcing layer is provided with an ultraviolet fluorescent coating, the ultraviolet fluorescent coating has the function of uniformly developing color under the irradiation of ultraviolet lamps, the function of uniformly developing color under the irradiation of the ultraviolet lamps can be influenced by structural flaws of the polyurethane, and when the flaws are detected, the corresponding sleeve links are only required to be replaced, so that the problem of high maintenance cost of the cable sleeve in the prior art is solved.
Preferably, the intermediate engagement portion and the end engagement portion each comprise a sliding nesting joint, a securing catch, and an outer sealing collar.
The outer sealing ferrule detachable jacket is arranged on the middle sleeve part so as to seal and protect the joint position of the middle sleeve part and the rest structure.
More specifically, the sliding nested joint is of a concave-convex structure, the sliding nested joint can be mutually close to and abutted with the other sliding nested joint so as to realize the shape jogging of the two parts, the sliding nested joint can provide stable connection when being connected, the two parts are fixedly connected through mutual nesting, and relative sliding or loosening is prevented, and the joint can be conveniently detached and reinstalled in a sliding mode without additional tools or complex operation.
More specifically, the fixing buckle can be divided into a fixing part and a changeable buckling part, and when the sliding nested interfaces are mutually butted, the buckling part can be driven to buckle with the fixing part so as to strengthen the linking stability of the two linking parts.
It should be noted that, the fixing buckle on one engagement portion is in a group, that is, at least has a fixing portion and a buckling portion, the fixing portion is used for buckling the buckling portion of the other engagement portion, and the buckling portion is used for buckling the fixing portion of the other engagement portion.
More specifically, the outer sealing ring is an annular sealing member, which is generally made of elastic rubber, silica gel, polyurethane and other materials, can completely cover the joint part to be sealed, and can select different thicknesses and hardness of the sealing ring according to different connecting positions, and the main function of the outer sealing ring is to prevent moisture, dust or other external pollutants from entering the connecting position, so that the joint part is not corroded or worn due to external environment factors, and the sealing performance is particularly important especially in an automobile or other high-vibration and high-temperature environment.
Preferably, the intermediate sleeve portion and the end sleeve portion have an insertion groove at a position prepared for disposing the outer seal ring, the insertion groove being for holding the outer seal ring and the intermediate sleeve portion in a tightly inserted state.
Specifically, the embedded groove is usually an annular or semi-annular groove, the embedded groove is matched with the shape of the outer sealing ring, the width and depth of the groove can be adjusted according to the shape and the size of the sealing ring, and the sealing ring can be accurately embedded in the groove.
More specifically, the location of the embedded groove is typically at the junction of the outboard and end side sleeve portions of the intermediate sleeve portion, the embedded groove ensuring a tight fit of the sealing ferrule with the sleeve portion and providing a secure location for the ferrule.
Preferably, the outer seal collar comprises a silicone base and a fluorinated polymer coating.
Specifically, the main body part of the outside sealing ferrule is a silica gel substrate, namely the ferrule is prepared by using a silica gel material, the silica gel has good elasticity, high temperature resistance, ageing resistance and chemical stability, can adapt to temperature change, and keeps good sealing performance in long-time use, and the silica gel substrate has good elasticity, so that the sealing ferrule can be effectively compressed during installation, thereby ensuring uniform sealing pressure on a sealing contact surface, and the silica gel material can bear higher working temperature (up to more than 200 ℃), so that the sealing ferrule is suitable for being used in environments requiring high temperature resistance, and can effectively prevent sealing failure.
More specifically, the main function of the silica gel substrate is to closely match with the joint part through elastic deformation, so that leakage of media such as liquid, gas and the like is effectively prevented, the excellent sealing property and the adaptability of the silica gel substrate enable the silica gel substrate to be particularly effective in a dynamic working environment, the softness of the silica gel can also provide a certain buffering function under the condition of pressure change or vibration, and the risk of sealing failure caused by equipment vibration or temperature change is reduced.
More specifically, fluorinated polymer (e.g., PTFE, polytetrafluoroethylene) coatings are commonly used to improve the chemical and wear resistance of the seal material, PTFE has very high chemical resistance and low coefficient of friction, can provide greater protection in harsh operating environments, and the fluorinated polymer coatings have extremely high resistance to most acids, bases, solvents, and other chemicals, thus effectively preventing corrosion of the seal from the outside environment, extending its useful life, and the low friction properties of the PTFE coatings help reduce friction between the seal and the contact surface, reduce wear, and ensure good seal performance over long periods of use.
More specifically, the fluorinated polymer coating can enhance the chemical resistance and ageing resistance of the sealing ring, so that the sealing ring can still maintain a good sealing effect when facing extreme environments such as high temperature, strong corrosive chemical substances and the like, and the low friction characteristic of the coating is beneficial to reducing abrasion of the sealing element in the use process, especially in the high-pressure or high-speed environment, and the fluorinated polymer coating can effectively reduce friction between the fluorinated polymer coating and a contact surface, so that the service life of the sealing ring is prolonged.
It should be noted that, the silica gel substrate and the fluorinated polymer coating are both transparent materials, so that the detection of ultraviolet lamp irradiation cannot be hindered, and the outer protective layer can be designed to be the same as the outer sealing ferrule.
Preferably, the middle sleeve part and the end sleeve part are respectively provided with a first separation sleeve and a second separation sleeve, the first separation sleeve and the second separation sleeve are provided with an interlaced embedded structure, the first separation sleeve and the second separation sleeve are detachably closed and installed through the interlaced embedded structure, and the insulating protective layer, the polyurethane reinforcing layer and the outer protective layer which are respectively arranged in the middle sleeve part and the end sleeve part are respectively arranged in the first separation sleeve and the second separation sleeve in a separated mode.
Specifically, the intermediate sleeve portion and the end sleeve portion are disposed on the cable to protect the cable, the intermediate sleeve portion and the end sleeve portion are disposed in two forms, the first form is manufactured directly on the cable by means of an external device, so that the intermediate sleeve portion and the end sleeve portion are directly formed on the cable, the intermediate sleeve portion and the end sleeve portion of the form are integrated into one sleeve, the second form is a split sleeve, namely, the intermediate sleeve portion and the end sleeve portion are divided into two combined portions, namely, a first split sleeve and a second split sleeve, the first split sleeve and the second split sleeve have an interlaced embedded structure, and the first split sleeve and the second split sleeve are detachably mounted in a closed mode through the interlaced embedded structure.
It can be understood that the installation and the disassembly of the integrated structure sleeve all need to use the corresponding working device, and the separated structure sleeve can be manually installed and disassembled, so that when a problem occurs in a certain link of the sleeve and needs to be replaced, the integrated structure sleeve needs to be replaced at a maintenance site with the corresponding working device, and the separated structure sleeve can be automatically replaced.
More specifically, the insulating protection layer, the polyurethane reinforcing layer and the outer protection layer which are respectively arranged on the middle sleeve part and the end sleeve part are arranged on the first separation sleeve and the second separation sleeve in a separated mode, and structures respectively arranged on the middle sleeve part and the end sleeve part are equally divided by the first separation sleeve and the second separation sleeve, namely the whole middle sleeve part and the end sleeve part are cut in half from the middle in the design, so that the first separation sleeve and the second separation sleeve of the middle sleeve part and the first separation sleeve and the second separation sleeve of the end sleeve part are obtained.
More specifically, the first separation sleeve and the second separation sleeve are provided with an insulating protection layer, a polyurethane reinforcing layer and an outer protection layer, and the arrangement of the polyurethane sleeve on the cable can be realized through the disassembly and the installation of the first separation sleeve and the second separation sleeve.
Preferably, the staggered embedding structure is arranged on the outer protection layer of the first separation sleeve and the second separation sleeve, and the staggered embedding structure of the outer protection layer of the first separation sleeve and the second separation sleeve comprises at least two layers, and the staggered embedding positions of the two layers are different.
Specifically, the first separation sleeve and the second separation sleeve are engaged and fixed through an interlaced engaging structure, that is, the first separation sleeve and the second separation sleeve are engaged and fixed with each other, so as to ensure that the first separation sleeve and the second separation sleeve can be stably combined to obtain the middle sleeve part and the end sleeve part.
More specifically, the staggered embedded structure is arranged on the outer protective layer, namely, the insulation protective layer and the polyurethane reinforcing layer are of smooth butt joint structures, and the integral fixation of the sleeve link is realized through the embedded fixation of the outer protective layer.
More specifically, the staggered embedding structure of the outer protection layer of the first separation sleeve and the second separation sleeve comprises at least two levels, and the staggered embedding positions of the two levels are different, so that the sealing performance of the outer protection layer is stronger due to the different staggered embedding positions of the two levels.
Preferably, the staggered embedded structure comprises concave parts and convex parts which are sequentially arranged, wherein the edges of the concave parts and the convex parts have certain inclination, and the inclination of the concave parts is matched with the inclination of the convex parts so as to realize the fastening embedded of the concave parts and the convex parts.
Specifically, the design of depressed part and bellying is the structure of a mutual gomphosis, and wherein the depressed part is the shape of indent, can understand as a recess or concave surface, and the bellying is then with the protruding structure of depressed part correspondence, can insert in the depressed part, and this kind of unsmooth complex design is used for reinforcing stability and the fastness of connection, also can provide certain simple operation when dismantling.
More specifically, the edges of the recess and the projection have a certain inclination, which means that the edges of these parts are not right-angled or perpendicular, but have a certain inclination angle, the inclined design can achieve a self-locking effect, and when the recess is engaged with the projection, the inclined edges can form a certain locking force in a certain direction, preventing them from loosening or disengaging under the action of external force.
More specifically, the design of the inclined edge enables the two parts to better adapt to the shape of each other when being inserted into each other, so that the tightness of connection is enhanced, looseness is avoided, the inclination of the concave part and the inclination of the convex part are mutually matched, namely, the inclination angles of the concave part and the convex part are matched properly, so that the concave part and the convex part can be naturally attached and firmly combined when being embedded, the design is favorable for enhancing the stability of the whole structure, reducing the stress concentration of the connection part and further improving the shock resistance and stretching resistance of the connection part.
More specifically, through the gradient of design depressed part and bellying for two parts can closely gomphosis each other when the installation, reach the effect of fastening, this kind of structural design has not only strengthened the firmness of connection, has also guaranteed the convenience when dismantling and reinstallation, has avoided needing too much instrument or complicated operation.
More specifically, the concave and convex portions may be fitted together, typically by mechanical force or manually. Once installed, the angled edge design ensures a stable connection between the two, and is not easily broken or loosened.
It can be appreciated that through the concave part and the protruding portion structure that the gradient agrees with, this kind of design can promote the connection stability of part by a wide margin, avoids appearing not hard up or the condition that drops under vibrations, external force or long-term use, and this kind of structural design makes the connection very firm, also can provide certain convenience simultaneously, and the slope design of concave part and protruding portion allows operating personnel to insert or dismantle the sleeve pipe easily, and can not lead to being difficult to disassemble because of powerful joint.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510173281.9A CN119834136A (en) | 2025-02-17 | 2025-02-17 | Polyurethane sleeve for new energy automobile wire harness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510173281.9A CN119834136A (en) | 2025-02-17 | 2025-02-17 | Polyurethane sleeve for new energy automobile wire harness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119834136A true CN119834136A (en) | 2025-04-15 |
Family
ID=95295886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202510173281.9A Pending CN119834136A (en) | 2025-02-17 | 2025-02-17 | Polyurethane sleeve for new energy automobile wire harness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119834136A (en) |
-
2025
- 2025-02-17 CN CN202510173281.9A patent/CN119834136A/en active Pending
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