CN202749790U - Support bar and support tube - Google Patents
Support bar and support tube Download PDFInfo
- Publication number
- CN202749790U CN202749790U CN201220312848.4U CN201220312848U CN202749790U CN 202749790 U CN202749790 U CN 202749790U CN 201220312848 U CN201220312848 U CN 201220312848U CN 202749790 U CN202749790 U CN 202749790U
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- Prior art keywords
- flange
- support bar
- stay pipe
- joint portion
- concave part
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Abstract
The utility model relates to a support bar for forming a support tube, wherein the support bar is flat and comprises a first combination part and a second combination part; the first combination part comprises a first flange and a first concave part; the second combination part comprises a second flange and a second concave part; the second flange extends downward from the upper surface of the second side of the support bar, and the form of the second flange is coordinated with the form of the first concave part; the second concave part extends upward from the inside of the second flange, and the form of the second concave part is coordinated with the form of the first flange; and the outside surface of at least one flange of the first flange and the second flange inclines inward from the basal part of at least one flange to the tail end along the thickness direction of the support bar. The utility model also provides a support tube and a method for producing the support tube. The first combination part or the second combination part of the support bar, and the second combination part or the first combination part of the adjacent support bar are fixed mutually through the lock joint mode, and uses the hot air, the ultrasound or the laser to weld so as to make the support tube have higher support intensity.
Description
Technical field
The utility model relates to a kind of stay pipe for electric cable accessories, particularly, relates to a kind of spiral support pipe of the electric cable accessories that is used to form medium and high voltage cable and the support bar that is used to form stay pipe.
Background technology
The electric cable accessories that comprises cable termination and transition joint is the vitals in the power transmission and transformation cable line, wherein cable termination generally is applied in the junction of cable and electric equipments such as generator, motor, transformer, gas-insulated switch (GIS), and transition joint generally is applied in the junction of two cables.
Fig. 7 shows the operation chart of utilizing stay pipe to form electric cable accessories in a kind of prior art.Connect at the scene two cables 201 and at 202 o'clock, will carry out predilation by the elasticity shrinkable sleeves 203 that silicon rubber is made, in the shrinkable sleeves 203 of expansion, insert stay pipe 204; Afterwards; cable 201 is connected with the conductor of being connected; silicon rubber and stay pipe electric cable accessories are moved on to after the joint; pulling one of stay pipe 204 is exposed end 205 and stay pipe 204 is removed from shrinkable sleeves 203; so that telescopic sleeve pipe 204 utilizes the elasticity of self to automatically reset, thereby the joint sealing ground of cable 201 and 202 is protected in telescopic sleeve pipe 203.
Support bar of the prior art mainly contains two kinds, a kind of is the self-locking support bar, adjacent support bar is after flange and groove hasp, interactional flange has certain distortion, the adjacent supports bar produces interaction force, after shorter like this (1-2cm) support bar hasp, can automatically not slip off even if arbitrarily move yet.Another kind is non-self-locking support bar, and after shorter (1-2cm) support bar hasp, the adjacent supports bar can not produce interaction force basically, relatively easily unties.
Above-mentioned straight shape stay pipe 204 is generally formed by twining by the flat support bar that polymer such as polypropylene, polyethylene, polyvinyl chloride (PVC), polyphenylene oxide (PPO) or its blend are made.The edge of adjacent supports bar is welded and fixed together by modes such as ultrasonic waves.In the stay pipe of prior art, adopt non-self-locking support bar to prepare by the mode that welding procedure is made or the self-locking support bar does not weld such as ultrasonic.Non-self-locking support bar self does not provide good axial strength, but can satisfy the requirement of product for straight shape stay pipe.For the reducing stay pipe, adopt in the market non-self-locking support bar, and utilize ultrasonic bonding.But ultrasonic wave is difficult to the transition portion of welding reducing stay pipe, so transition portion just becomes the vulnerable area of reducing stay pipe., after putting rubber body, easily collapse and rupture with the reducing support bar of this support bar and said method preparation, can not store for a long time.So the existing product in market solves the problem of the vulnerable area of reducing stay pipe by add second a slightly little straight shape stay pipe of diameter in stay pipe inside, has increased thus structural complexity and the manufacturing cost of stay pipe.
The utility model content
For solving above-mentioned and other technical problem of the prior art, the utility model proposes a kind of stay pipe that is used to form the support bar of stay pipe and is used to form electric cable accessories, particularly have the reducing stay pipe of the ascending transition portion of diameter, this stay pipe has higher support strength.
According to the further aspect of the utility model, a kind of support bar that is used to form stay pipe is provided, described support bar is that the first side flat and on Width and the second side comprise respectively the first joint portion and the second joint portion.Described the first joint portion comprises: the first flange extends upward from lower surface in the first side of described support bar; And first concave part, from the inboard of described the first flange to downward-extension.Described the second joint portion comprises: the second flange, and from upper surface to downward-extension, the shape of described the second flange is configured to the form fit with described the first concave part in the second side of described support bar; And second concave part, extending upward in the inboard of described the second flange, the shape of described the second concave part is configured to the form fit with described the first flange.Outer surface base portion from described at least one flange on the thickness direction of described support bar of at least one flange in described the first flange and described the second flange slopes inwardly to end.
In above-mentioned stay pipe, the width of the porch of described the first concave part is slightly less than the width of the end of described the second flange, and the width of the porch of described the second concave part is slightly less than the width of the end of described the first flange.
In above-mentioned stay pipe, the width of the porch of the first concave part is equal to or greater than the width of the end of described the second flange, and the width of the porch of described the second concave part is equal to or greater than the width of the end of described the first flange.
In above-mentioned stay pipe, the maximum ga(u)ge maximum ga(u)ge of the flange of the minimum thickness of the concave part of the first joint portion and the second joint portion and that be substantially equal to support bar.
According to embodiment on the other hand of the present utility model, a kind of stay pipe that is used to form electric cable accessories is provided, described stay pipe comprises: tapered portion, the internal diameter of described tapered portion diminishes on the length direction of described stay pipe gradually.Described stay pipe is formed by the support bar coiling described in the above-mentioned various embodiment, and the second joint portion of the first joint portion of described support bar or the second joint portion and adjacent supports bar or the first joint portion are fixed to one another by the mode of snapping.
Above-mentioned stay pipe further comprises one or two straight sections, and described straight sections is extended from least one end of described tapered portion.
According to the stay pipe of the tapering transition section with vary in diameter of above-mentioned various embodiment of the present utility model and the formation method of stay pipe, allow the flange portion of adjacent support bar in the position of joint portion generation distortion to a certain degree, the strong bonded that keeps simultaneously described adjacent supports bar has improved the support strength of stay pipe.Further, because by hot blast, ultrasonic or LASER HEATING makes adjacent support bar realize the part thermal welding, can keep support bar by homogeneous heating, thereby further improve the support strength of stay pipe.
For the purpose of this utility model, feature and advantage can be become apparent more, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the schematic diagram that shows according to the spiral support pipe of exemplary embodiment of the present utility model;
Fig. 2 is the enlarged diagram that the adjacent supports bar of demonstration stay pipe shown in Figure 1 is bonded to each other;
Fig. 3 is the schematic cross-section that shows a kind of embodiment of support bar shown in Fig. 1;
Fig. 4 is the schematic cross-section that shows the another kind of embodiment of support bar shown in Fig. 1;
Fig. 5 is the schematic cross-section that shows the another kind of embodiment of support bar shown in Fig. 1;
Fig. 6 is the schematic diagram that the support bar shown in the figure is bonded to each other;
Fig. 7 is the operation chart that shows a kind of embodiment of the method for making stay pipe;
Fig. 8 shows to utilize the schematic diagram that forms electric cable accessories according to stay pipe of the present utility model; And
Fig. 9 shows to utilize stay pipe to form the operation chart of electric cable accessories in the prior art.
Embodiment
Although fully describe the utility model with reference to the accompanying drawing that contains preferred embodiment of the present utility model, but before describing, this should be appreciated that those of ordinary skill in the art can revise utility model described herein, obtains technique effect of the present utility model simultaneously.Therefore, must understand above description to those of ordinary skill in the art and Yan Weiyi discloses widely, and its content does not lie in the described exemplary embodiment of restriction the utility model.Identical Reference numeral represents identical part in the accompanying drawing.
Fig. 1 is the partial schematic sectional view that shows according to the stay pipe of exemplary embodiment of the present utility model, and Fig. 2 is the enlarged diagram that the adjacent supports bar of demonstration stay pipe shown in Figure 1 is bonded to each other; Fig. 3 is the schematic cross-section that shows a kind of embodiment of support bar shown in Fig. 1.Can be used for forming electric cable accessories according to stay pipe 100 of the present utility model, the high-tension cable that this electric cable accessories is used for will carrying such as voltage more than 10 kilovolts is electrically connected with High-Voltage Electrical Appliances equipment connections such as generator, motor, transformer, gas-insulated switch (GIS) or with two high-tension cables by terminal fitting.
Referring to Fig. 1-3, made by pancake support bar 10 according to the stay pipe that is used to form electric cable accessories 100 of a kind of embodiment of the present utility model.Support bar 10 is generally made by polymer such as polypropylene, polyethylene, polyvinyl chloride (PVC), polyphenylene oxide (PPO).Stay pipe 100 is formed by support bar 10 coilings, and comprises tapered portion 2, and the internal diameter of described tapered portion 2 diminishes on the length direction of stay pipe 100 gradually.
According to a kind of embodiment of stay pipe 100 of the present utility model, support bar 10 is that the first side flat and on its Width and the second side comprise respectively the first joint portion 4 and second joint portion 5 of mating with the first joint portion 4.More specifically, the first joint portion 4 comprises: the first flange 41 extends upward at first side (left side among Fig. 3) of support bar 10 lower surface from support bar 10; And first concave part 42, from the inboard of the first flange 41 to downward-extension.The second joint portion 5 comprises: the second flange 51, and from the upper surface of support bar 10 to downward-extension, the shape of the second flange is configured to the form fit with the first concave part 42 in second side (right side among Fig. 3) of support bar 10; And second concave part 52, extending upward in the inboard of the second flange 51, the shape of the second concave part 52 is configured to the form fit with the first flange 41.The outer surface of the flange of at least one in the first flange 41 and the second flange 51 slopes inwardly to end from the base portion of described at least one flange (the first flange 41 and/or the second flange 52) on the thickness direction of support bar 10.Like this, when twining support bar 10 formation stay pipe 100, the first joint portion 4 of support bar 10 or the second joint portion 5 are fixed to one another by the mode of snapping with the second joint portion 5 or first joint portion 4 of adjacent supports bar.
According to stay pipe 100 of the present utility model, as described in Figure 2, in the adjacent support bar 101 and 102 of stay pipe 100, if the joint portion with the concave part opening upwards is called the first joint portion, be called the second joint portion with the concave part joint portion that Open Side Down, then the flange 41 of the first joint portion 4 is attached in the concave part 52 of the second joint portion 5 in the mode of buckle combination, simultaneously the flange 51 of the second joint portion 5 is attached in the concave part 42 of the first joint portion 4 in the mode of buckle combination, thereby so that in the support bar 10 adjacent support bar 101 and 102 firmly fix and be in the same place.Be appreciated that the minimum thickness H3 of concave part 42 of the first joint portion 4 and the second joint portion 5 flange 51 maximum ga(u)ge H2's and be substantially equal to the maximum ga(u)ge H1 of support bar.Like this, can be so that the thickness of adjacent supports bar junction be identical with the thickness of support bar other parts.
Further comprise one or two straight sections according to stay pipe 100 of the present utility model, described straight sections is extended from least one end of described tapered portion 2.In one embodiment, stay pipe 100 comprises two straight sections, and described two straight sections are extended respectively and formed from the two ends of tapered portion 2 and have than the first straight sections 1 of large diameter and have the second straight sections 3 of less internal diameter.In another kind of embodiment, stay pipe 100 can comprise a straight sections, and the first straight sections 1 is extended and formed to described straight sections from the larger end of the internal diameter of tapered portion 2.In a further embodiment, stay pipe 100 comprises a straight sections, and the second straight sections 3 is extended and formed to described straight sections from the less end of the internal diameter of tapered portion 2.In another kind of embodiment, the two ends of tapered portion 2 can not connect straight sections yet.
In the further embodiment of support bar 10 of the present utility model, as shown in Figure 3, the outer surface of the second flange 51 base portion (being the part that flange is connected with support bar 10) from flange on the thickness direction of support bar 10 slopes inwardly to terminal (free end).That is to say, the normal of the upper and lower surface of the outer surface of the second flange 51 and support bar 10 has angle [alpha].Therefore, when stay pipe during during from the first pipe section 1 to transition part 2 transition or from 3 transition of transition part 2 to second pipe sections, two adjacent support bars inwardly or outwards will produce a certain amount of bending in the joint portion in the radial direction at stay pipe, the outer surface of the inclination of flange 51 will be so that flange 51 can be in the deflection of the concave part 42 interior generation certain angles of the first joint portion, so that the first joint portion 4 and the second joint portion 5 can be owing to crooked and break away from each other, thereby keep the strong bonded between the first joint portion 4 and the second joint portion 5.
Fig. 4 shows the another kind of embodiment of the support bar cross sectional shape of stay pipe.The outer surface of the second flange 51 slopes inwardly to terminal (free end) from the base portion of the second flange (i.e. the second flange be connected with support bar 10 part) on the thickness direction of support bar 10, and namely the normal of the upper and lower surface of the outer surface of flange 51 and support bar 10 has angle [alpha]; Simultaneously, the outer surface of the first flange 41 slopes inwardly to terminal (free end) from the base portion of the first flange (i.e. the first flange be connected with support bar 10 part) on the thickness direction of support bar 10, and namely the normal of the upper and lower surface of the outer surface of flange 41 and support bar 10 has angle beta.Like this, the outer surface of the first flange 41 of support bar and the second flange 51 all on the thickness direction of support bar 10 base portion from flange slope inwardly to end.
In one embodiment, as shown in Figure 3, on the Width of support bar 10, the width W of the porch of the first concave part 42
42Be slightly less than the width W of the end of the second flange 51
51, the width W of the porch of the second concave part 52
52Be slightly less than the width W of the end of the first flange 41
41That is to say, the cross section of the first concave part 42 and the second flange 51 has roughly complementary conical by its shape, and the cross section of the second concave part 52 and the first flange 41 has roughly complementary conical by its shape.Like this, can comparatively securely flange be remained in the corresponding concave part.When adjacent support bar after snapping, at the support bar Width opposite effect power is arranged between described the first and second flanges, thereby makes described support bar self-locking.
In a kind of interchangeable embodiment, as shown in Figure 5, the width W of the porch of the first concave part 42 '
42' be equal to or greater than the width W of the end of the second flange 51 '
51', the width W of the porch of the second concave part 52 '
52' be equal to or greater than the width W of the end of the first flange 41 '
41'.Like this, as shown in Figure 6, in adjacent support bar 101 ' and 102 ', flange portion can more easily be inserted in the corresponding groove.
According to the utility model embodiment on the other hand, referring to Fig. 7, provide a kind of method for preparing the stay pipe 100 of above-mentioned various embodiment, a winding cylinder 80 is provided, the inner surface that wherein twines the outer surface of cylinder 80 and stay pipe 100 is roughly the same; A compression cylinder 70 is provided, and the shape of outer surface that wherein compresses cylinder 70 is roughly complementary with the shape of the outer surface that twines cylinder 80; Cylinder 80 is twined in rotation, so that being wrapped in towards the other end from an end that twines cylinder 80, support bar 10 twines on the cylinder 80, make simultaneously and compress cylinder 70 near twining cylinder 80, with the second joint portion 5 or the first joint portion 4 that the first joint portion 4 or the second joint portion 5 with support bar 10 are pressed to the adjacent supports bar, make support bar and adjacent supports bar fixed to one another by the mode of snapping; After twining end, take off support bar fixed to one another from twining cylinder, thus the stay pipe of the present utility model 100 that forms.
In a kind of exemplary embodiment, as scheme need to form as shown in Figure 1 stay pipe 100, then twine cylinder 80 and comprise that the first wound portion 81, diameter are than little the second wound portion 83 of the diameter of described the first wound portion 81 and the winding transition part 72 of the taper between the first wound portion 81 and the second wound portion 83.Compress cylinder 70, comprise that the first compressed part 71, diameter are than large the second compressed part 73 of the diameter of the first compressed part 71 and the compression transition part 72 of the taper between the first compressed part 71 and the second compressed part 73, the shape of the outer surface of compression cylinder 70 and the shape complementarity of the outer surface that twines cylinder 80, so that when compressing cylinder 70 near winding cylinder 80, all outer surfaces of two cylinders can contact respectively.
It will be appreciated by those skilled in the art that, no matter adopt still to adopt clockwise and twine counterclockwise support bar 10, for the first joint portion 4 on the same cross section that is positioned at support bar 10 and the second joint portion 5, should make the joint portion (for example the first joint portion) of concave part (for example the first concave part 42) opening upwards be positioned at the downstream of winding direction, and concave part (for example the second concave part 52) another joint portion (the second joint portion) that Open Side Down is positioned at the upstream of winding direction, when utilizing compression cylinder 70 compressions to be wrapped in the support bar 10 that twines on the cylinder 80, can successfully realize mutually combining in two joint portions like this.
According to the method for preparing stay pipe of the present utility model, when compressing support bar 10, use the each other at least in part thermal welding of the edge that makes the adjacent supports bar of the mode of Hot-blast Heating, Ultrasonic Heating or LASER HEATING.After the winding of finishing whole stay pipe 100, welding, cooling, take off stay pipe 100 from twining pipe 80.Further, twining cylinder can be solid or hollow with compressing cylinder.
According to the formation method of the stay pipe of the stay pipe of the vicissitudinous internal diameter of tool of above-mentioned various embodiment of the present utility model and the vicissitudinous internal diameter of tool, the edge of adjacent support bar interfixes with the buckle combination; Because at least one flange of support bar both sides has the surface of inclination, so that when the metal circular tube winding support bar with tapering transition section has the stay pipe of tapering transition section with formation, allowing adjacent support bar is to comply with the outer surface of the various outer diameter that twines pipe and to a certain degree bending occurs in the position of joint portion, the strong bonded that keeps simultaneously described adjacent supports bar has improved the support strength of stay pipe.The intensity that is used for stay pipe is improved, even if do not need the second straight shape stay pipe also can satisfy the requirement of supporting the telescopic sleeve pipe of being made by rubber.
Fig. 9 shows to utilize the operation chart that forms electric cable accessories according to stay pipe of the present utility model.When connecting at the scene two cable (not shown), to carry out predilation by the elasticity shrinkable sleeves 20 that silicon rubber is made, in the shrinkable sleeves 20 of expansion, be expanded on the utility model stay pipe 100, so that the internal diameter of shrinkable sleeves 20 is identical with the external diameter of stay pipe; Cable one end is inserted in the described electric cable accessories; afterwards; cable conductor is electrically connected; afterwards; pulling one of stay pipe 100 is exposed end 6 and stay pipe 100 is removed from shrinkable sleeves 20; so that telescopic sleeve pipe 20 utilizes the elasticity of self to automatically reset, thereby the joint sealing ground of cable is protected in telescopic sleeve pipe 20.In one embodiment, the external diameter of the first pipe section 1 of stay pipe 100 is about 70 millimeters, and 3 external diameters of the second pipe section 2 are approximately 50 millimeters, and the thickness of shrinkable sleeves 20 is 12 millimeters.
It will be appreciated by those skilled in the art that, embodiment described above is exemplary, and those skilled in the art can make improvements, can carry out independent assortment in the situation of the conflict of the structure described in the various embodiment aspect not recurring structure or principle, thereby on the basis that solves technical problem of the present utility model, realize more kinds of support bars and stay pipe.
After describing preferred embodiment of the present utility model in detail; those of ordinary skill in the art can clearly understand; under the protection range that does not break away from the claim of enclosing and spirit, can carry out various variations and change, and the utility model also is not subject to the execution mode of the exemplary embodiment of lifting in the specification.
Claims (6)
1. support bar (10) that is used to form stay pipe (100), described support bar (10) be for the first side flat and on Width and the second side comprise respectively the first joint portion (4) and the second joint portion (5),
Described the first joint portion comprises:
The first flange (41) extends upward from lower surface in the first side of described support bar; And
The first concave part (42), from the inboard of described the first flange to downward-extension, described the second joint portion comprises:
The second flange (51), from upper surface to downward-extension, the shape of described the second flange is configured to the form fit with described the first concave part in the second side of described support bar; And
The second concave part (52) extends upward in the inboard of described the second flange, and the shape of described the second concave part is configured to the form fit with described the first flange,
It is characterized in that, outer surface base portion from described at least one flange on the thickness direction of described support bar of at least one flange in described the first flange and described the second flange slopes inwardly to end.
2. support bar as claimed in claim 1, it is characterized in that, the width of the porch of described the first concave part is slightly less than the width of the end of described the second flange, and the width of the porch of described the second concave part is slightly less than the width of the end of described the first flange.
3. support bar as claimed in claim 1, it is characterized in that, the width of the porch of the first concave part is equal to or greater than the width of the end of described the second flange, and the width of the porch of described the second concave part is equal to or greater than the width of the end of described the first flange.
4. such as each the described support bar among the claim 1-3, it is characterized in that the maximum ga(u)ge maximum ga(u)ge of the flange of the minimum thickness of the concave part of the first joint portion and the second joint portion and that be substantially equal to support bar.
5. stay pipe (100) that is used to form electric cable accessories, described stay pipe comprises: tapered portion (2), the internal diameter of described tapered portion diminishes on the length direction of described stay pipe gradually,
It is characterized in that, described stay pipe is formed by each described support bar (10) coiling among the claim 1-4, and first joint portion (4) of described support bar or the second joint portion (5) are fixed to one another by the mode of snapping with the second joint portion (5) or the first joint portion (4) of adjacent supports bar.
6. stay pipe as claimed in claim 5 is characterized in that, further comprises one or two straight sections, and described straight sections is extended from least one end of described tapered portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220312848.4U CN202749790U (en) | 2012-06-28 | 2012-06-28 | Support bar and support tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220312848.4U CN202749790U (en) | 2012-06-28 | 2012-06-28 | Support bar and support tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202749790U true CN202749790U (en) | 2013-02-20 |
Family
ID=47709142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220312848.4U Expired - Fee Related CN202749790U (en) | 2012-06-28 | 2012-06-28 | Support bar and support tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202749790U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103112174A (en) * | 2013-03-01 | 2013-05-22 | 深圳市沃尔核材股份有限公司 | Production method of support tubes and production system adopting method |
| CN103318559A (en) * | 2013-06-14 | 2013-09-25 | 江苏神马电力股份有限公司 | Insulator protection device |
| CN103515916A (en) * | 2012-06-28 | 2014-01-15 | 泰科电子(上海)有限公司 | Supporting bar, supporting pipe and method for manufacturing supporting pipe |
| CN106848993A (en) * | 2017-04-17 | 2017-06-13 | 苏州鼎鑫冷热缩材料有限公司 | A kind of cold-contraction type outdoor terminal |
-
2012
- 2012-06-28 CN CN201220312848.4U patent/CN202749790U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103515916A (en) * | 2012-06-28 | 2014-01-15 | 泰科电子(上海)有限公司 | Supporting bar, supporting pipe and method for manufacturing supporting pipe |
| CN103515916B (en) * | 2012-06-28 | 2016-12-21 | 泰科电子(上海)有限公司 | Support bar, a stay tube and the method for preparation stay tube |
| CN103112174A (en) * | 2013-03-01 | 2013-05-22 | 深圳市沃尔核材股份有限公司 | Production method of support tubes and production system adopting method |
| CN103112174B (en) * | 2013-03-01 | 2016-05-25 | 深圳市沃尔核材股份有限公司 | A kind of production method of stay pipe and comprise the production system of the method |
| CN103318559A (en) * | 2013-06-14 | 2013-09-25 | 江苏神马电力股份有限公司 | Insulator protection device |
| CN103318559B (en) * | 2013-06-14 | 2015-03-04 | 江苏神马电力股份有限公司 | Insulator protection device |
| CN106848993A (en) * | 2017-04-17 | 2017-06-13 | 苏州鼎鑫冷热缩材料有限公司 | A kind of cold-contraction type outdoor terminal |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20160628 |
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| CF01 | Termination of patent right due to non-payment of annual fee |