JP4797137B2 - Brazing panel manufacturing method and brazing panel - Google Patents

Description

  The present invention relates to a method of manufacturing a brazed panel and a brazed panel. More specifically, the present invention relates to a brazing panel and a mounting bracket on the surface of a panel body for brazing an aluminum alloy core material between aluminum alloy surface plates. It relates to a brazing panel to be stopped.

  In general, a sandwich panel in which a pair of aluminum alloy surface plates and an aluminum alloy core material interposed between the surface plates is integrally brazed is lightweight, has excellent light-shielding properties, etc., and has an excellent appearance. It is widely used as building materials for interiors and exteriors, and when used as exterior building materials such as eaves, mounting brackets are bolted to the surface plate.

  2. Description of the Related Art Conventionally, in a sandwich panel used for a bag or the like, a mounting seat having a screw member into which a fixing bolt can be screwed is disposed on the back side of the surface plate at the installation position of the mounting bracket in order to increase the strength. . In addition, in order to improve water tightness, a brazing material (placed) is put in a through hole provided in the surface plate, and the surface plate and the mounting seat are brazed (for example, see Patent Document 1).

In this type of sandwich panel, the A3000 type surface plate is used which is thin and has high strength.
JP 2000-234415 A (Claims, FIG. 1)

  However, in the method of brazing the surface plate and the mounting seat by placing them, attention must be paid to the arrangement position of the brazing material in order to ensure brazing. Further, the brazing material may move before brazing due to impact or the like after the brazing material is disposed, and brazing may be insufficient due to the displacement of the brazing material, and sufficient watertightness may not be obtained.

  Also, the brazing method is important because the A3000 series used for the surface plate constituting the panel has a lower melting point than pure aluminum (A1000 series).

  This invention is made in view of the said situation, and makes it a subject to provide the manufacturing method of the brazing panel which can manufacture the brazing panel which is excellent in watertightness, and is lightweight and high intensity | strength with high efficiency.

In order to solve the above-mentioned problem, the invention according to claim 1 is a panel body in which an aluminum alloy core material is interposed between a pair of aluminum alloy surface plates arranged opposite to each other with a framed frame material interposed therebetween. A mounting bracket installed at a predetermined position on the surface plate, a mounting seat provided on the back side of the surface plate and the frame material at the installation position of the mounting bracket, a mounting hole provided in the mounting bracket, and the A method for manufacturing a brazed panel that brazes a fixing bolt that passes through a through-hole provided in a surface plate and a frame member and is screwed into the mounting seat, using a brazing material , A mounting seat main body disposed on the back side of the surface plate, and fixedly inserted into the mounting seat main body, and an end thereof is positioned substantially on the same plane as the surface plate, and an outer diameter thereof is smaller than that of the through hole. And the brazing material is a sheath member. And a ring-shaped brazing material composed of a flux filled in the hollow portion of the sheath member, wherein the sheath member is 5 to 10 mass% of silicon and 22 to 22% of copper with respect to the entire sheath member after being melted by heating. The flux is a non-corrosive flux containing fluoride and containing cesium fluoride, and the surface plate and the core material. when brazing the bets, after inserting the ring-shaped brazing material into the gap between the through hole and the screw member, by the melting brazing material by heating, said surface plate and the core material, and the screw member and the table It is characterized by brazing the face plate. The ring shape is not necessarily a circle, and may be a polygon depending on the shape of the gap .

  Here, the reason why silicon is 5 to 10% by mass and copper is 22 to 37% by mass with respect to the entire sheath member is that the mass with respect to the entire sheath member of Si and Cu is out of these numerical ranges. The difference between the brazing composition and the Al—Cu—Si ternary eutectic composition (Cu; 26.7 mass%, Si; 5.3 mass%) becomes too large, and the brazing temperature of ordinary aluminum (about 600 ° C. This is because brazing becomes difficult in a lower temperature range of 530 to 560 ° C. In particular, a lightweight aluminum alloy is suitable as the face material of the saddle panel. However, as described in Patent Document 1, the conventional brazing material is Al-Si, and the brazing temperature is about 600 ° C. Therefore, the aluminum alloy as the face material must use an A1000 series having a high melting point but a low strength. If an aluminum alloy having a high strength but a low melting point is used for the face material, the face material is not suitable for brazing. Deforms and melts, damaging the beauty of the product. Therefore, by using an Al—Si—Cu brazing material having a low brazing temperature, an alloy having a high strength but a low melting point (for example, A3000 series) can be used as a face material.

  Moreover, the flux can be made to correspond to the low melting point of the brazing material by using a fluoride-based non-corrosive flux containing cesium fluoride.

In addition, the sheath member is formed of an Al-Si alloy material having a silicon content of 5 to 15% by mass and a copper material corresponding to 22 to 37% by mass of copper with respect to the mass of the entire sheath member. It is better to use a material (Claim 2 ).

  By comprising in this way, a sheath member can be formed with the clad material of Al-Si alloy and Cu which are comparatively easy to process compared with the process of the alloy of an Al-Cu-Si ternary system eutectic.

According to a third aspect of the present invention, there is provided a panel main body formed by interposing an aluminum alloy core material between a pair of aluminum alloy surface plates disposed opposite to each other with a framed frame material interposed therebetween, and the surface plate. A mounting bracket installed at a predetermined position above, a mounting seat provided on the back side of the surface plate and the frame member at the installation position of the mounting bracket, a mounting hole provided in the mounting bracket, the surface plate and the frame member A brazing panel that is brazed using a brazing material and a fixing bolt that is screwed into the mounting seat through a through hole provided in the mounting seat, the mounting seat being disposed on the back side of the surface plate A mounting seat body, and a screw member that is inserted and fixed to the mounting seat body, and whose end is positioned substantially on the same plane as the surface plate, and whose outer diameter is smaller than that of the through hole. The brazing material includes a sheath member and a hollow portion of the sheath member. A ring-shaped brazing material composed of a flux filled in the sheath member, the sheath member containing 5 to 10% by mass of silicon and 22 to 37% by mass of copper with respect to the entire sheath member after heating and melting, and the balance Is made of a material having a composition composed of aluminum and inevitable impurities, and the flux is a fluoride-based non-corrosive flux containing cesium fluoride, and is inserted into a gap between the through hole and the screw member. The screw member and the surface plate are brazed by melting the ring-shaped brazing material by heating. The ring shape is not necessarily a circle, and may be a polygon depending on the shape of the gap .

In addition, the sheath member is formed of an Al-Si alloy material having a silicon content of 5 to 15% by mass and a copper material corresponding to 22 to 37% by mass of copper with respect to the mass of the entire sheath member. It is better to use a material (Claim 4 ).

In addition, the screw member is inserted into and fixed to the mounting seat body, and its end is positioned substantially on the same plane as the surface plate, and its outer diameter is smaller than the through hole provided in the surface plate. However, it is preferable that the screw member is formed in a bottomed shape by being inserted and fixed in a bottomed mounting hole provided in the mounting seat main body (Claim 5 ).

According to the first and third aspects of the invention, after assembling the surface plate and the core material, the ring-shaped brazing material is provided in the gap between the through hole provided in the surface plate and the frame material and the screw member constituting the mounting seat. Therefore, there is no misplacement of the brazing material, and there is no possibility of the brazing material moving to another location after the brazing material is inserted and before brazing due to impact or the like. Furthermore, the brazing material melted at the time of brazing can enter between the surface plate and the mounting seat to braze the surface plate and the mounting seat.

According to the first and third aspects of the present invention, by using a brazing material comprising a sheath member having a hollow portion and a flux filled in the hollow portion as the ring-shaped brazing material, an appropriate amount to the brazing portion is obtained. A flux can be supplied and uniform brazing can be performed.

According to the first and third aspects of the invention, by setting silicon to 5 to 10% by mass and copper to 22 to 37% by mass with respect to the entire sheath member, the brazing temperature of aluminum (about 600 ° C.) is increased. Brazing can be enabled in the low temperature range of 530-560 ° C. Moreover, the flux can be made to correspond to the low melting point of the brazing material by using a fluoride-based non-corrosive flux containing cesium fluoride.

According to the second and fourth aspects of the invention, the sheath member is formed of the Al-Si alloy and the Cu clad material, which are relatively easy to process as compared with the processing of the Al-Cu-Si ternary eutectic alloy. be able to.

According to the invention described in claim 5 , by forming the screw member in a bottomed shape, it is possible to catch rainwater or the like entering the screw portion between the fixing bolt and the screw member at the bottom portion of the screw portion.

  According to the present invention, the following excellent effects can be obtained.

(1) According to the first and third aspects of the invention, it is possible to provide a brazed panel that is excellent in water tightness and that is lightweight and has high strength, and that such a brazed panel can be manufactured with high efficiency. it can.

(2) According to the inventions of claims 1 and 3, by using a brazing material comprising a sheath member having a hollow portion and a flux filled in the hollow portion as a ring-shaped brazing material, the brazing portion is obtained. In addition to the above (1), the water tightness can be further improved.

(3) According to the first and third aspects of the invention, brazing can be performed in a temperature range of 530 to 560 ° C. lower than a normal aluminum brazing temperature (about 600 ° C.). In addition to 1) and (2), brazing can be further ensured to improve water tightness, and deformation of the surface plate due to the heating temperature during brazing can be prevented. In particular, when a brazed panel is used for a firewood panel, the firewood panel can be made thinner and lighter, the strength can be improved, and the face material is not deformed. Furthermore, since it is not necessary to correct the deformation of the face material after brazing, the manufacturing cost can be reduced.

(4) According to the inventions of claims 2 and 4 , the sheath member is made of a clad material of Al-Si alloy and Cu, which is relatively easy to process as compared with processing of an Al-Cu-Si ternary eutectic alloy. Therefore, in addition to the above (1) to (3), it is possible to further increase the efficiency of the brazing operation.

(5) According to the invention described in claim 5 , by forming the screw member in a bottomed shape, rainwater or the like entering the screw portion between the fixing bolt and the screw member is received at the bottom portion of the screw portion. Therefore, in addition to the above (1) to (4), water tightness can be further improved.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the best embodiment of the present invention will be described in detail with reference to the accompanying drawings. Here, the case where the brazing panel according to the present invention is applied to a bag will be described.

  FIG. 1 is a perspective view showing an installation state of a bag to which a brazing panel according to the present invention is applied, and FIGS. 2 and 3 are enlarged sectional views taken along lines II and II-II in FIG. 1, respectively. .

  As shown in FIG. 1, the brazing panel, that is, the eaves 1, is disposed above the opening 3 such as the entrance or window of the building 2, and protrudes from the outer wall 4 of the building 2 (four in the drawing). The case is attached to a plurality of suspension members 6 (two cases are shown in the drawing) that protrude obliquely downward from the mounting bracket 5 and the outer wall 4.

  庇 1 is a panel main body 10 which is a heel main body disposed below the mounting bracket 5, a mounting bracket 7 which is hooked on the mounting bracket 5, and a mounting bracket 7 </ b> A to which the lower end of the suspension member 6 is connected. It has.

  The panel body 10 includes a frame member 11 serving as a frame formed of a hollow rectangular extruded shape made of an aluminum alloy, and a pair of aluminum alloy tables arranged opposite to each other with the frame member 11 interposed therebetween. A face plate 12 and a plurality of cylindrical core members 13 made of aluminum alloy disposed between both surface plates 12 are provided.

  Further, the flange 1 includes the mounting brackets 7 and 7A installed at predetermined positions on the surface plate 12, and the mounting plate 20 provided on the back side of the surface plate 12 and the frame member 11 at the installation positions of the mounting brackets 7 and 7A. The through holes 14a provided in the mounting brackets 7 and 7A, the through holes 14 provided in the surface plate 12, and the through holes 14a provided in the upper piece 11a of the frame member 11 are threaded into the mounting seat 20. The fixing seat 20 is brazed to the surface plate 12 together with the frame member 11 and the core member 13. In this case, the frame material 11 is made of JIS A3003 alloy, the surface plate 12 is made of JIS A3003 alloy having a thickness of 1.5 mm, and the core material 13 is made of a JIS A3003 alloy plate material having a thickness of 0.2 mm. What is formed into a cylindrical shape of about 25 mm is used.

  As shown in FIGS. 4 and 5, the mounting seat 20 is inserted and fixed to the mounting seat main body 21 and the mounting seat main body 21 disposed on the back side of the upper piece 11 a of the surface plate 12 and the frame member 11. And the end part is located in the substantially same surface as the surface board 12, and the outer diameter is comprised by the screw member 22 which has the cylindrical internal thread part 22a whose diameter is smaller than the through-hole 14. FIG. In this case, the mounting seat body 21 is formed in a piece shape obtained by cutting an aluminum alloy extruded profile into a predetermined dimension. The mounting seat body 21 includes a rectangular block 21a, a pair of outward flanges 21b extending on opposite sides of the upper end of the rectangular block 21a, and a bottomed mounting hole 21c formed in the center of the rectangular block 21a. It is equipped with. The screw member 22 is formed of a stainless steel cylindrical member having a female screw portion 22a and a male screw portion 22b. The male screw portion 22b is inserted and fixed into the bottomed mounting hole 21c of the mounting seat body 21 by self-tapping. It is formed in a bottomed shape.

  In this way, by forming the screw member 22 in a bottomed shape, it is possible to catch rainwater or the like entering the screw portion between the fixing bolt 30 and the screw member 22 at the bottom portion of the mounting hole 21c.

  As shown in FIG. 4A, the mounting seat 20 configured as described above is mounted in the through hole 14 provided in the surface plate 12 and the through hole 14a provided in the upper piece 11a of the frame member 11. After the screw member 22 of the seat 20 is loosely fitted and the ring-shaped brazing material 40 is inserted into the gap 15 between the through hole 14 and the screw member 22 with the end portion thereof being positioned substantially flush with the surface plate 12. The brazing material 40 is melted by heating to be brazed R to the surface plate 12 (see FIG. 4B).

  The ring-shaped brazing material 40 is formed of a brazing material including a sheath member 41 having a hollow portion 42 and a flux 43 filled in the hollow portion 42. In this case, the sheath member 41 contains 5 to 10% by mass of silicon (Si) and 22 to 37% by mass of copper (Cu) with respect to the entirety of the sheath member 41 after heating and melting, with the balance being aluminum and inevitable impurities. The flux 43 is formed of a fluoride-based non-corrosive flux containing cesium fluoride (CsF).

  The sheath member 41 includes an Al—Si based alloy material having a silicon (Si) content of 5 to 15% by mass and a copper material corresponding to 22 to 37% by mass of copper (Cu) with respect to the mass of the entire sheath member. It is formed with the clad material formed from.

  Thus, by using an Al—Si alloy material and a Cu clad material for the sheath member 41, Al—Si alloy and Cu are reacted (eutectic) during brazing heating, and Al— having a melting point of 525 ° C. A Cu—Si ternary eutectic brazing material can be produced. As a result, brazing can be easily performed in a low temperature range of 530 to 560 ° C., and the surface plate 12 can be prevented from being deformed by the heating temperature during brazing.

  In addition, JIS A4343, A4045, A4047 etc. can be used as Al-Si type alloy material with Si content of 5-15 mass%.

  Moreover, since Cu specific gravity is 8.9 and the specific gravity of Al-Si type alloy is 2.7, Cu material with respect to the cross-sectional area of the sheath member 41 is 22-37 mass% with respect to the mass of the sheath member 41. It can be satisfied by making the ratio of the cross-sectional area of (the clad rate of the plate-like sheath material before molding the sheath member) 8 to 15%.

  Note that the cross-sectional shape of the sheath member 41 clad with the Cu material may be four forms as shown in FIG. 6, but may be any form as long as the conditions regarding the clad rate are satisfied.

  Moreover, the filling of the flux 43 into the sheath member 41 can also be performed by a normal method. The flux 43 filled in the hollow portion 42 of the sheath member 41, that is, the fluoride-based non-corrosive flux containing cesium fluoride, is the cost of cesium fluoride (CsF) in the fluoride-based non-corrosive flux. However, if it is less than 10 mol%, the effect of lowering the melting point of the flux is insufficient, and brazing at 530 to 560 ° C. becomes difficult. Therefore, the proportion of cesium fluoride (CsF) in the fluoride-based non-corrosive flux is preferably 10 mol% or more.

  In the above description, a case has been described in which the hollow non-corrosive flux 43 containing cesium fluoride is filled in the hollow portion 42 of the sheath member 41 made of an Al—Si based alloy material and a Cu clad material. However, the sheath member 41 may be formed of an Al—Si alloy material, and the Cu material may be mixed with the flux 43 in the form of powder or fine wire and filled in the hollow portion 42.

<Method of manufacturing brazed panel>
In order to produce (manufacture) the ridge 1 configured as described above, first, as shown in FIG. 7A, the powdery brazing material and the flux are turbid on one surface of the surface plate 12. The mixed slurry 50 is applied and dried. The application method is not particularly limited. For example, as shown in FIG. 7A, the mixed slurry 50 may be sprayed with a spray S or the like, or may be applied with a brush or the like. In addition, you may apply | coat the solution containing a flux after apply | coating the slurry which adds turbidity by adding a pure water to a powder-form brazing material without using a mixing slurry, and after apply | coating the solution containing a flux, The slurry may be applied.

  The brazing material and flux applied to the surface plate 12 may have any composition as long as brazing can be performed at a low temperature of 560 ° C. or lower, but the same composition as the ring-shaped brazing material 40 described above. It is preferable to have

  After applying the brazing material and the flux to the surface plate 12, as shown in FIG. 7B, the frame material 11 and the core material 13 are attached to the surface of the one surface plate 12 on which the brazing material (mixed slurry 50) is adhered. The other surface plate 12 is placed on the frame member 11 and the core member 13 with the surface to which the brazing material (mixed slurry 50) is attached facing downward. Assemble. At this time, the screw member 22 of the mounting seat 20 is loosely fitted into the through holes 14 a and 14 provided in the frame member 11 and the surface plate 12 from the inside of the hollow portion of the frame member 11, and its end portion is substantially the same as the surface plate 12. The ring-shaped brazing material 40 is inserted into the gap 15 between the through-hole 14 and the screw member 22 in a state where the mounting seat 20 is set (see FIG. 4A). At this time, when the gap 15 is deep, a plurality of ring-shaped brazing materials 40 may be inserted. The ring-shaped brazing material 40 does not necessarily have a circular cross section. For example, as shown by a two-dot chain line in FIG. 5, the ring-shaped brazing material 40 is formed using a wire having a wide shape such as an elliptical cross section. The material 40A may be inserted.

  Next, nitrogen (N2) gas is supplied into the temporarily assembled panel body 10 to replace the inside of the panel body 10 with N2 gas. Specifically, after placing a weight (not shown) on the other surface plate 12, the temporarily assembled panel body 10 is placed in a container (not shown), and the inside of the container is evacuated, N2 gas is introduced inside. At this time, as shown in FIG. 2, a through hole 13 a is formed in the core material 13, and a through hole 11 c is formed in the side wall 11 b on the panel inner side of the frame member 11. N2 gas is surely introduced.

  Next, the temporarily assembled panel main body 10 is put in a furnace, heated to 530 ° C. over about 40 minutes, kept at 530 to 560 ° C. for about 5 minutes, and then cooled, the frame material 11 and the surface plate 12, the panel main body 10 in which the core material 13 and the mounting seat 20 are integrated by the brazing material is obtained. At this time, the brazing material is also sucked in between the surface plate 12 and the upper piece 11a of the frame member 11 and between the upper piece 11a of the frame member 11 and the mounting seat body 21, so that the surface plate 12, The frame member 11 and the mounting seat 20 are also brazed. Since the brazing material is also sucked in between the side surfaces of the adjacent core materials 13 by capillary action, the core materials 13 are also brazed together via the brazing material.

  Thereafter, if necessary, the surface of the frame member 11 and the surface plate 12 (exposed surface) is baked.

  In the above embodiment, the mounting seat 20 has been described. In the mounting bracket 7A, as shown in FIG. 3, the mounting seat 20 is brought into contact with the back side of the top piece 11a of the surface plate 12 and the frame member 11, Brazing R can be performed in the same manner as described above.

  Moreover, although the said embodiment demonstrated the case where the core material 13 was cylindrical shape, the core material 13 does not necessarily need to be cylindrical shape, for example, the triangular cylinder shape made from aluminum alloy, the pentagonal cylinder shape, the hexagonal cylinder shape, etc. It may be formed of any hollow body.

It is a perspective view which shows the attachment state of the scissors at the time of using the brazing panel which concerns on this invention for scissors. It is an expanded sectional view which follows the II line | wire of FIG. It is an expanded sectional view which follows the II-II line of FIG. They are an expanded sectional view (a) which shows the state before brazing of the surface plate and mounting seat in this invention, and an expanded sectional view (b) which shows the state after brazing. It is a cross-sectional perspective view which shows the attachment seat and ring-shaped brazing material in this invention. It is sectional drawing which shows the modification of the ring-shaped brazing material in this invention. They are a perspective view (a) which shows the state which apply | coats a brazing material to the surface board in this invention, and an exploded perspective view (b) which shows the state which brazes a surface board and a core material.

1 庇 (brazing panel)
7, 7A Mounting bracket 7a Mounting hole 10 Panel body 11 Frame material 12 Surface plate 13 Core material 14, 14a Through hole 15 Clearance 20 Mounting seat 21 Mounting seat body 21c Bottomed mounting hole 22 Screw member 23 Bottom plate 30 Fixing bolt 40, 40A Ring-shaped brazing material 41 Sheath member 42 Hollow portion 43 Flux

Claims (5)

A panel body in which an aluminum alloy core material is interposed between a pair of aluminum alloy surface plates arranged opposite to each other with a framed frame material interposed therebetween, and a mounting bracket installed at a predetermined position on the surface plate And a mounting seat provided on the back side of the surface plate and the frame material at the installation position of the mounting metal, a mounting hole provided in the mounting metal, and a through hole provided in the surface plate and the frame material. A method of manufacturing a brazed panel for brazing a fixing bolt to be screwed into the mounting seat using a brazing material ,
The mounting seat is disposed on the back side of the surface plate, and the mounting seat body is inserted and fixed to the mounting seat body, and its end portion is positioned substantially on the same plane as the surface plate, and its outer diameter is It is composed of a screw member having a smaller diameter than the through hole,
The brazing material is a ring-shaped brazing material composed of a sheath member and a flux filled in the hollow portion of the sheath member, and the sheath member has a silicon content of 5 to 10 with respect to the entire sheath member after heating and melting. The flux is a non-corrosive flux containing cesium fluoride. The flux is formed of a material having a composition containing 22% to 37% by mass of copper and the balance of aluminum and inevitable impurities. ,
When brazing the said surface plate and the core material, after inserting the ring-shaped brazing material into the gap between the through hole and the screw member, by the melting brazing material by heating, said surface plate and the core material And brazing the screw member and the face plate,
A method for producing a brazed panel, characterized in that: In the manufacturing method of the brazing panel of Claim 1 ,
The sheath member is a clad material formed of an Al—Si based alloy material having a silicon content of 5 to 15% by mass and a copper material corresponding to 22 to 37% by mass of copper with respect to the mass of the entire sheath member. A method for producing a brazed panel, comprising: A panel body in which an aluminum alloy core material is interposed between a pair of aluminum alloy surface plates arranged opposite to each other with a framed frame material interposed therebetween, and a mounting bracket installed at a predetermined position on the surface plate And a mounting seat provided on the back side of the surface plate and the frame material at the installation position of the mounting metal, a mounting hole provided in the mounting metal, and a through hole provided in the surface plate and the frame material. A brazing panel that is brazed using a brazing material to a fixing bolt that is screwed into the mounting seat,
The mounting seat has a mounting seat main body disposed on the back side of the surface plate, and is fixed to the mounting seat main body, and its end portion is positioned substantially on the same plane as the surface plate. It is composed of a screw member having a smaller diameter than the through hole,
The brazing material is a ring-shaped brazing material composed of a sheath member and a flux filled in the hollow portion of the sheath member, and the sheath member has a silicon content of 5 to 10 with respect to the entire sheath member after heating and melting. The flux is a non-corrosive flux containing cesium fluoride. The flux is made of a material having a composition containing 22% to 37% by mass of copper and the balance of aluminum and inevitable impurities. ,
Formed by brazing and the screw member and the surface plate by melting by heating the ring-shaped brazing material is inserted into the gap between the through hole and the screw member, brazing panel, characterized in that. The brazed panel according to claim 3 ,
The sheath member is a clad material formed of an Al—Si based alloy material having a silicon content of 5 to 15% by mass and a copper material corresponding to 22 to 37% by mass of copper with respect to the mass of the entire sheath member. A brazed panel characterized by that. The brazed panel according to claim 3 or 4 ,
The brazing panel, wherein the screw member is formed in a bottomed shape by being inserted and fixed in a bottomed mounting hole provided in the mounting seat body.

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