CN215645184U - Double-charging socket fixing device for European standard charging - Google Patents

Abstract

The utility model discloses a double-charging socket fixing device for European standard charging, which comprises a fixing support assembly, a first connecting part and a second connecting part, wherein the fixing support assembly is provided with a first mounting hole, the second connecting part and the first connecting part suitable for being connected with a vehicle body framework; the sealing plate is arranged on the mounting part and is provided with a second mounting hole corresponding to the first mounting hole and a third connecting part corresponding to the second connecting part; the connecting piece comprises a first connecting piece and a second connecting piece; the sealing element is arranged at one end of the sealing plate far away from the fixed support assembly and is suitable for being extruded to achieve a sealing effect when the charging cabin door is closed; be formed with installation space between shrouding and the installation department, the socket is suitable for to pass second mounting hole and first mounting hole in proper order and fixes in installation space, is equipped with in the installation space to be suitable for with installation space and isolated decoration of external environment. The device has simple structure and low design and manufacturing cost. The requirement on the installation position is low, the device can be installed on the ground or hoisted, and the generalization degree is high. Have dustproof waterproof function, guarantee the safety of charging.

Description

Double-charging socket fixing device for European standard charging

Technical Field

The utility model relates to an electric automobile charging socket, in particular to a double-charging socket fixing device for European standard charging.

Background

Energy and environmental protection are the most concerned problems in the world at present, and the automobile industry inevitably develops towards the directions of environmental protection, cleanness and energy conservation in order to relieve the two increasingly serious problems. The new energy automobile adopts unconventional automobile fuel (fuel except gasoline and diesel oil) as a power source (or adopts conventional automobile fuel and a novel vehicle-mounted power device), integrates advanced technologies in the aspects of power control and driving of the automobile, and forms an automobile with advanced technical principle, new technology and new structure. Is an important means for solving the problems of energy and environment. New energy vehicles include four major types: hybrid Electric Vehicles (HEV), pure electric vehicles (BEV, including solar vehicles), Fuel Cell Electric Vehicles (FCEV), other new energy vehicles (such as super capacitors, high efficiency energy storage devices such as flywheels), and the like.

In the export passenger train in recent years, new forms of energy motorcycle type account for than more and more high, and the socket structure that charges that adopts the European standard is more complicated, and it is bigger to occupy the space in cabin of charging, and foreign client also has higher requirements to structural strength, preparation precision, appearance molding etc. simultaneously.

Electric automobile need effectively fix the socket that charges at the charging process, prevents to appear rocking at the charging process or at the plug in-process. At present, the charging socket fixing device in the industry mainly has the following two forms:

1. the charging socket fixing support with a common structure is provided with a charging small door on an outer cabin door. The disadvantage is that no independent charging cabin is provided, and the appearance is not beautiful enough; when the small door is opened for charging, the hidden trouble of ash leakage and water inflow exists.

The charging socket fixing device of the independent charging cabin is integrally formed in a punching mode and internally provided with a socket fixing support. The disadvantages are high manufacturing cost and long development period; the independent charging cabin has higher requirements on arrangement of the whole vehicle, and a boss is often required to be arranged in the vehicle to ensure the use space of the charging cabin.

Disclosure of Invention

In view of the above technical problems, the present invention aims to: the double-charging socket fixing device for European standard charging is simple in structure, reduces development cost and manufacturing period, is convenient to disassemble, assemble and maintain, improves arrangement universality of various vehicle types of a charging cabin, and meets the requirements of dust prevention, water prevention and attractiveness.

The technical scheme of the utility model is as follows:

a dual charging socket fixture for european standard charging, comprising:

the fixed support assembly is provided with an installation part and a first connecting part suitable for being connected with a vehicle body framework, and the installation part is provided with a first installation hole for a socket to pass through and a second connecting part arranged on the periphery of the first installation hole;

the sealing plate is arranged on the mounting part and is provided with a second mounting hole corresponding to the first mounting hole and allowing a socket to penetrate through and a third connecting part corresponding to the second connecting part;

the connecting piece comprises a first connecting piece and a second connecting piece, wherein the first connecting piece is suitable for penetrating through the first connecting part to connect and fix the fixed support assembly and the vehicle body framework, and the second connecting piece is suitable for penetrating through the second connecting part and the third connecting part to connect and fix the sealing plate and the fixed support assembly;

the sealing element is arranged at one end of the sealing plate, which is far away from the fixed support assembly, and is suitable for being extruded to achieve the sealing effect when the charging cabin door is closed;

the shrouding with be formed with installation space between the installation department, the socket is suitable for to pass in proper order the second mounting hole with first mounting hole and fixing in the installation space, be equipped with in the installation space be suitable for with installation space and isolated decoration of external environment.

Preferably, the fixing device further comprises:

travel switch mounting hole, it is including seting up first travel switch mounting hole on the installation department with set up on the shrouding, with the second travel switch mounting hole that first travel switch mounting hole corresponds, travel switch is suitable for to pass second travel switch mounting hole with first travel switch mounting hole and installing fixing device is last, travel switch is used for send alarm signal in order to indicate the driver when the hatch door that charges does not close.

Preferably, the fixing bracket assembly includes:

the fixing bracket is plate-shaped, and the mounting part is arranged on the fixing bracket;

the base is in including setting up the dorsad of fixed bolster two angle steel and the connection of shrouding one side upper end the dorsad of fixed bolster two bracing of shrouding one side, two angle steel parallel interval set up and two bracing divide the outside of establishing at two angle steel, first connecting portion set up on the angle steel.

Preferably, the inclined strut is provided with a lightening hole.

Preferably, the first connecting part is a long waist hole, and the first connecting piece is a bolt matched with the long waist hole.

Preferably, the closing plate comprises:

the outer wall of the sealing plate body is circumferentially surrounded to form two end openings, and the middle part of the sealing plate body is the installation space;

the flange is circumferentially arranged on the outer side of one end, facing the mounting part, of the sealing plate body in a surrounding manner, and the third connecting parts are circumferentially distributed on the flange at intervals;

the decorative part be with the decorative board that the inner wall of shrouding body links to each other, the decorative board is close to keeping away from of shrouding body the one end setting of installation department just the outer terminal surface of decorative board leaves keeping away from of shrouding body the port of the one end of installation department has the interval, so that the sealing member can install and fix keeping away from of shrouding body the port department of the one end of installation department.

Preferably, the decorative plate is provided with a protective cover hanging fixing hole, and the hanging rope on the protective cover is suitable for being fixed in the protective cover hanging fixing hole through a fastener.

Preferably, the bottom of the sealing plate body is provided with a drain hole.

Preferably, the second connecting part comprises a connecting hole formed in the mounting part and a mounting nut welded and fixed to one end, far away from the sealing plate, of the connecting hole;

the third connecting part is also a connecting hole;

the second connecting piece is a bolt matched with the connecting hole and the mounting nut.

Preferably, the sealing member is a sealing rubber strip, which includes:

the sealing body is a hollow spheroid;

the joint spare sets up the one end of sealing body, including the joint portion of two relative settings, two inject joint space and two between the joint portion be equipped with on the terminal surface that faces each other of joint portion and incline the barb structure that extends towards another joint portion direction, two joint portion the barb structure can press from both sides tightly or loosen, arbitrary pre-buried galvanized steel band in the joint portion.

Compared with the prior art, the utility model has the advantages that:

according to the double-charging socket fixing device for European standard charging, the fixing support assembly is arranged, the long waist hole connected with the vehicle body framework and the mounting hole used for being connected with the sealing plate are arranged on the fixing support assembly, the sealing plate and the fixing support assembly as well as the fixing support assembly and the vehicle body framework are connected through the bolts, and the charging socket is convenient to disassemble, assemble and overhaul. Be equipped with the decorative board in the shrouding, be formed with installation space between decorative board and the shrouding, the socket can wholly be sheltered from to the decorative board, only exposes the position that inserts the rifle that charges to the waterproof dustproof effect of socket has been improved. In addition, the sealing piece is arranged at the outer end port of the sealing plate, when the charging cabin door is closed, the sealing piece is extruded to achieve the sealing effect, the waterproof and dustproof effects of the whole fixing device can be further improved, and the charging safety is guaranteed. Two socket mounting holes are arranged, and the socket charging device is suitable for two charging states. Meanwhile, the installation position of the travel switch is integrated, so that an alarm can be given to remind a driver when the charging cabin door is not closed. The space in the cabin is compact and the arrangement is reasonable. The whole fixing device is simple in structure and manufacture, and low in design and manufacturing cost.

Drawings

The utility model is further described with reference to the following figures and examples:

fig. 1 is a schematic front view of a dual charging socket fixing device for european standard charging according to an embodiment of the present invention;

fig. 2 is a schematic top view of a dual charging socket fixing device for european standard charging according to an embodiment of the present invention;

fig. 3 is a schematic side view of a dual charging socket fixing device for european standard charging according to an embodiment of the present invention;

fig. 4 is a front view schematically illustrating a fixing bracket assembly (with a socket) of a dual charging socket fixing device for european standard charging according to an embodiment of the present invention;

fig. 5 is a schematic top view of a fixing bracket assembly (with the socket omitted) of the dual charging socket fixing device for european standard charging according to an embodiment of the present invention;

fig. 6 is a schematic side view of a fixing bracket assembly of a dual charging socket fixing device for european standard charging according to an embodiment of the present invention;

fig. 7 is a schematic front view illustrating a sealing plate of a dual charging socket fixing device for european standard charging according to an embodiment of the present invention;

fig. 8 is a schematic top view of a dual charging socket fixing device for european standard charging according to an embodiment of the present invention;

fig. 9 is a schematic side view of a dual charging socket fixing device for european standard charging according to an embodiment of the present invention;

fig. 10 is a schematic sectional view of the double charging socket fixing device for european standard charging of fig. 7 from the direction B-B;

fig. 11 is a schematic structural diagram of a sealing member of a dual charging socket fixing device for european standard charging according to an embodiment of the present invention.

Wherein: 1. a fixed bracket assembly; 11. fixing a bracket; 111. a first mounting hole; 112. a second connecting portion; 1121. mounting a nut; 113. a first travel switch mounting hole; 114. lightening holes; 12. a base; 121. angle steel; 1211. a first connection portion; 122. bracing; 2. closing the plate; 20. a decorative plate; 200. an installation space; 201. a second mounting hole; 202. a second travel switch mounting hole; 203. the protective cover is hung on the fixing hole; 21. a seal plate body; 211. a drain hole; 22. a flange; 221. a third connecting portion; 3. a socket; 4. a seal member; 40. clamping and connecting the space; 41. a seal body; 42. a clamping part; 421. a barb structure; 43. a galvanized steel strip; 5. a travel switch.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Example (b):

the double charging socket fixing device for charging the European standard of the embodiment is shown in fig. 1 to 11 and comprises a fixing bracket assembly 1, a sealing plate 2, a connecting piece, a sealing piece 4 and a travel switch mounting hole.

The fixing bracket assembly 1 is provided with a mounting portion and a first connecting portion 1211 adapted to be connected to a vehicle body frame, and the mounting portion is provided with a first mounting hole 111 for the socket 3 to pass through and a second connecting portion 112 arranged at the periphery of the first mounting hole 111. It should be noted that two first mounting holes 111 are provided in the present embodiment, and two charging sockets 3 in different states are respectively mounted therein. The two first mounting holes 111 are both shaped holes, and the shape of the two first mounting holes is adapted to the socket 3. Specifically, as shown in fig. 2 to 6, the fixing bracket assembly 1 includes a fixing bracket 11 and a base 12, the fixing bracket 11 is plate-shaped, flanges extending horizontally upward and away from the sealing plate 2, i.e., upward and as shown in fig. 2, are formed on two sides above the fixing bracket 11, i.e., on the left and right sides as shown in fig. 2, and the mounting portion is disposed on the fixing bracket 11, specifically, at the lower end as shown in fig. 5. As shown in fig. 5, the fixing bracket 11 is in a U-shape with an upward opening in a plan view. As shown in fig. 2 and 3, the base 12 includes two parallel angle steels 121 disposed at an upper left side of the fixing bracket 11 opposite to the sealing plate, that is, as shown in fig. 3, and an inclined strut 122 connected to two sides of the fixing bracket 11, specifically, the two angle steels 121, wherein the cross section of the inclined strut 122 is a right triangle, and the inclined side is in an arc shape. The angle steel 121 and the inclined strut 122 are welded to form the base 12. The provision of the diagonal brace 122 may increase the structural strength of the entire fixing bracket assembly 1. The mounting portion may be a mounting groove formed in an end surface of the fixing bracket 11 facing the sealing plate, that is, an end surface of the fixing bracket 11 facing the right end as shown in fig. 3, or an end surface of the fixing bracket 11 facing the sealing plate 2.

The connecting members (not shown) include a first connecting member (not shown) adapted to connect and fix the stationary bracket assembly 1 to the vehicle body frame through the first connecting portion 1211, and a second connecting member (not shown) adapted to connect and fix the cover plate 2 to the stationary bracket assembly 1 through the second connecting portion 112 and the third connecting portion 221. A seal 4 is provided at the end of the sealing plate 2 remote from the fixed bracket assembly 1 and is adapted to be compressed to effect a seal when the charging bay door (not shown) is closed.

Preferably, as shown in fig. 2, the first connection portion 1211 is a long waist hole, and the first connection member is a bolt fitted into the long waist hole. Preferably, as shown in fig. 5 to 10, the second connection portion 112 includes a connection hole formed in the mounting portion and a mounting nut 1121 welded and fixed to an end of the connection hole away from the sealing plate 2. The second connecting piece is a bolt matched with the connecting hole and the mounting nut 1121. Adopt bolted connection, the dismouting is overhauld charging socket 3 and is convenient.

Preferably, the sprags 122 define lightening holes 114 therein. As shown in fig. 3 and 6, the lightening holes 114 are substantially triangular, and the hypotenuse of the triangle where the lightening holes 114 are located, i.e., the hypotenuse of the brace 122, is curved upward, i.e., concave inward. The weight of the whole fixing bracket component 1 can be reduced, and the hoisting installation is convenient. The fixing device of the embodiment can also be installed on the ground, and the requirement on the installation position is low.

As shown in fig. 3, the sealing plate 2 is provided on the mounting portion, and the sealing plate 2 is provided with a second mounting hole 201 corresponding to the first mounting hole 111 through which the receptacle 3 passes and a third connecting portion 221 corresponding to the second connecting portion 112. As shown in fig. 2 and 3, an installation space 200 is formed between the sealing plate 2 and the installation portion, the socket 3 is adapted to be fixed in the installation space 200 by sequentially passing through the second installation hole 201 and the first installation hole 111, and a decoration adapted to isolate the installation space 200 from the external environment is provided in the installation space 200. Specifically, as shown in fig. 7 to 10, the closing plate 2 includes a closing plate body 21 and a flange 22. The outer wall of the closing plate body 21 is circumferentially surrounded to form two end openings and the middle is an installation space 200. The flange 22 is circumferentially disposed around the mounting portion of the closure body 21, i.e. outside the left end as viewed in fig. 10, i.e. the closure plate 2 is of a hollow-inside upright structure. The third connecting portions 221 are circumferentially spaced apart on the flange 22. As shown in fig. 7, the second mounting holes 201 also include two second mounting holes 201, and the shape of the two second mounting holes 201 is similar to the shape of an egg, specifically, matches the shape of the socket 3. As shown in fig. 7, the third connection parts 221 are circular connection holes and the number thereof is six. As shown in fig. 8, the sealing plate body 21 has a water discharge hole 211 formed at the bottom thereof for discharging water that may accidentally enter.

Preferably, as shown in fig. 7, 7 protective cover hanging fixing holes 203 are provided on the decorative plate 20, and the 7 protective cover hanging fixing holes 203 are distributed in two rows, wherein 4 protective cover hanging fixing holes are provided on the upper surface, and 3 protective cover hanging fixing holes are provided on the lower surface, and the hole diameter of each protective cover hanging fixing hole is smaller than that of the third connecting portion 221. The protective cover is adapted to cover the second mounting hole 201 to cover the socket 3. Thereby playing the dustproof and waterproof role. The string rope on the visor can be fixed on visor hangs fixed orifices 203 through the self-tapping screw to make when opening the visor and charging, can directly open the visor can, the visor can hang on decorative board 20 through hanging the rope, need not manually to open the visor and place the fixed position again.

As shown in fig. 2 to 3 and 8 to 10, the decoration member is a decoration plate 20 connected to the inner wall of the closing plate body 21, one end of the decoration plate 20 close to the closing plate body 21, which is far from the mounting portion, is arranged at the right end as shown in fig. 3, and the outer end face of the decoration plate 20 is spaced from one end of the closing plate body 21, which is far from the mounting portion, which is the port at the right end as shown in fig. 3, so that the sealing member 4 can be mounted and fixed at the port at the end of the closing plate body 21, which is far from the mounting portion.

Preferably, the sealing member 4 is a sealing rubber strip, and includes a sealing body 41 and a clamping member. Specifically, as shown in fig. 11, the sealing body 41 is a hollow sphere. The joint spare sets up in the one end of sealing body 41, is U type column structure, including two joint portions 42 that set up relatively, is equipped with the barb structure 421 that extends towards another joint portion 42 direction slope on the terminal surface that faces each other of injecing joint space 40 and two joint portions 42 between two joint portions 42, and the barb structure 421 of two joint portions 42 can press from both sides tightly or loosen, pre-buried galvanized steel band 43 in arbitrary joint portion 42. The sealant strip of the embodiment can be ethylene propylene diene monomer sponge. Through the structure setting of joint portion 42, barb 421, make things convenient for sealed adhesive tape joint on the lateral wall of shrouding body 21.

Preferably, the fixing device of the present embodiment further includes a travel switch mounting hole, and the travel switch mounting hole includes a first travel switch mounting hole 113 provided on the mounting portion and a second travel switch mounting hole 202 provided on the sealing plate 2 and corresponding to the first travel switch mounting hole 113. The travel switch 5 is adapted to be mounted on the fixing device through the second travel switch mounting hole 202 and the first travel switch mounting hole 113, and the travel switch 5 is used for giving an alarm signal to prompt a driver when the charging port door is not closed. Specifically, as shown in fig. 4, the first travel switch mounting hole 113 is provided in the middle of the mounting portion and in the lower middle of the two first irregularly shaped mounting holes. As shown in fig. 7, the second stroke switch mounting hole 202 is provided in the lower middle of the two second mounting holes 201.

According to the fixing device, the fixing support assembly 1 is arranged, the fixing support assembly 1 is provided with the long waist hole connected with the vehicle body framework and the mounting hole used for being connected with the sealing plate 2, the sealing plate 2 and the fixing support assembly 1 as well as the fixing support assembly 1 and the vehicle body framework are connected through the bolts, and the charging socket 3 is convenient to disassemble, assemble and overhaul. Be equipped with decorative board 20 in the shrouding 2, be formed with installation space 200 between decorative board 20 and the shrouding 2, decorative board 20 can wholly shelter from socket 3, only exposes the position of inserting the rifle that charges to socket 3's waterproof dustproof effect has been improved. In addition, the sealing element 4 is arranged at the outer end port of the sealing plate 2, when the charging cabin door is closed, the sealing element 4 is extruded to achieve a sealing effect, the waterproof and dustproof effects of the whole fixing device can be further improved, and the charging safety is guaranteed. Set up two 3 mounting holes of socket, be applicable to two kinds of states socket 3 that charge. Meanwhile, the installation position of the integrated travel switch 5 can give an alarm to remind a driver when the charging cabin door is not closed. The space in the cabin is compact and the arrangement is reasonable. The whole fixing device is simple in structure and manufacture, and low in design and manufacturing cost.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the utility model and are not to be construed as limiting the utility model. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims (10)

1. A double charging socket fixing device for European standard charging is characterized by comprising:

the fixed support assembly (1) is provided with a mounting part and a first connecting part (1211) suitable for being connected with a vehicle body framework, wherein the mounting part is provided with a first mounting hole (111) for a socket (3) to pass through and a second connecting part (112) arranged on the periphery of the first mounting hole (111);

a sealing plate (2) arranged on the mounting portion, wherein the sealing plate (2) is provided with a second mounting hole (201) corresponding to the first mounting hole (111) and allowing a socket (3) to pass through and a third connecting portion (221) corresponding to the second connecting portion (112);

the connecting pieces comprise first connecting pieces and second connecting pieces, the first connecting pieces are used for connecting and fixing the fixed support assembly (1) and the vehicle body framework through the first connecting portions (1211) and the second connecting pieces are used for connecting and fixing the sealing plate (2) and the fixed support assembly (1) through the second connecting portions (112) and the third connecting portions (221);

the sealing element (4) is arranged at one end of the sealing plate (2) far away from the fixed support assembly (1) and is suitable for being squeezed to achieve a sealing effect when the charging cabin door is closed;

shrouding (2) with be formed with installation space (200) between the installation department, socket (3) are suitable for passing in proper order second mounting hole (201) with first mounting hole (111) and fix in installation space (200), be equipped with in installation space (200) be suitable for with installation space (200) and isolated decoration of external environment.

2. The dual charging socket fixture for charging euro standard of claim 1, wherein the fixture further comprises:

travel switch mounting hole, it is including seting up first travel switch mounting hole (113) on the installation department with set up on shrouding (2), with second travel switch mounting hole (202) that first travel switch mounting hole (113) correspond, travel switch (5) are suitable for to pass second travel switch mounting hole (202) with first travel switch mounting hole (113) and install fixing device is last, travel switch (5) are used for send alarm signal in order to indicate the driver when the hatch door that charges does not close.

3. Double-charging socket fixture for european standard charging according to claim 1 or 2, wherein the fixture bracket assembly (1) comprises:

the fixing support (11), the said fixing support (11) takes the form of the platelike, the said mounting region is set up on the said fixing support (11);

base (12), including setting up fixed bolster (11) dorsad two angle steel (121) and the connection of shrouding one side upper end are in fixed bolster (11) dorsad two bracing (122) of shrouding one side, two angle steel (121) parallel interval set up and two bracing (122) are established in the outside of two angle steel (121) respectively, first connecting portion (1211) set up on angle steel (121).

4. The dual charging socket fixture for charging Europe according to claim 3, wherein said brace strut (122) is provided with lightening holes (114).

5. The dual charging socket fixture for charging euro standard according to claim 1 or 2, wherein the first connection portion (1211) is a long waist hole, and the first connection member is a bolt fitted into the long waist hole.

6. A double charging socket fixture for european standard charging according to claim 1 or 2, wherein the sealing plate (2) comprises:

the outer wall of the sealing plate body (21) is circumferentially surrounded to form two end openings, and the middle part of the sealing plate body is provided with the installation space (200);

flanges (22) circumferentially arranged on the outer side of one end of the sealing plate body (21) facing the mounting portion, wherein the third connecting portions (221) are circumferentially distributed on the flanges (22) at intervals;

the decoration be with decorative board (20) that the inner wall of shrouding body (21) links to each other, decorative board (20) are close to keeping away from of shrouding body (21) the one end setting of installation department just the outer terminal surface of decorative board (20) is from keeping away from of shrouding body (21) the port of the one end of installation department has the interval, so that sealing member (4) can install to be fixed keeping away from of shrouding body (21) the port department of the one end of installation department.

7. The dual charging socket fixture for charging according to the european patent claim 6, wherein the decorative plate (20) is provided with a protective cover hanging fixing hole (203), and the hanging rope on the protective cover is adapted to be fixed in the protective cover hanging fixing hole (203) by a fastener.

8. The dual charging socket fixing device for the European standard charging as claimed in claim 6, wherein the bottom of the closing plate body (21) is provided with a drainage hole (211).

9. The dual charging socket fixture for charging in the european standard according to claim 1 or 2, wherein the second connecting portion (112) comprises a connecting hole formed on the mounting portion and a mounting nut (1121) welded and fixed to an end of the connecting hole away from the sealing plate (2);

the third connecting part (221) is also a connecting hole;

the second connecting piece is a bolt matched with the connecting hole and the mounting nut (1121).

10. Double-charging socket fixture for european standard charging according to claim 1 or 2, wherein the seal (4) is a sealing strip comprising:

a sealing body (41) which is a hollow spheroid;

joint spare sets up the one end of sealing body (41), joint portion (42) including two relative settings, two inject joint space (40) and two between joint portion (42) be equipped with barb structure (421) that extend towards another joint portion (42) direction slope on the terminal surface that faces each other of joint portion (42), two joint portion (42) barb structure (421) can press from both sides tightly or loosen, arbitrary pre-buried galvanized steel band (43) in joint portion (42).

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