CN214661867U - Plug screw with high leakproofness - Google Patents
Plug screw with high leakproofness Download PDFInfo
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- CN214661867U CN214661867U CN202120431546.8U CN202120431546U CN214661867U CN 214661867 U CN214661867 U CN 214661867U CN 202120431546 U CN202120431546 U CN 202120431546U CN 214661867 U CN214661867 U CN 214661867U
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- sealing ring
- plug screw
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Abstract
The utility model provides a plug screw with high leakproofness solves current plug screw and has the relatively poor, 0 shape circle of sealing reliability problem easy drop, the assembly is inconvenient. The screw plug comprises a screw plug body and a sealing ring; the plug screw body comprises a plug screw seat, a transition rod and a plug screw rod which are coaxially connected in sequence, the diameter of the plug screw seat is larger than that of the plug screw rod, and the diameter of the plug screw rod is larger than that of the transition rod; an annular sealing groove is formed in the end face, close to the transition rod, of the screw plug seat, the radial section of the annular sealing groove is rectangular, and the diameter of the inner groove wall of the annular sealing groove is the same as that of the transition rod; the outer peripheral surface of the screw plug rod is provided with an external thread; the sealing ring is an annular sealing ring, the cross section of the sealing ring is a notch rectangle, the notch rectangle is provided with a notch, and the notch is arranged on the inner circumferential surface of the sealing ring; the sealing ring is arranged in the annular sealing groove, the thickness of the sealing ring is larger than the depth of the annular sealing groove, and the unfilled corner is arranged on one side close to the transition rod.
Description
Technical Field
The utility model relates to a plug screw, concretely relates to plug screw with high leakproofness.
Background
In the lubrication system of automobile gear box and other mechanical equipment, the lubricating oil needs to be replaced after a certain time. When the lubricating oil is replaced, the screw plug arranged on the shell is generally removed, the lubricating oil in the oil tank is discharged, then the screw plug is screwed and sealed, new lubricating oil is added, and the sealing performance of the screw plug is required to be ensured during the installation process of the screw plug.
At present, when the screw plug is installed, sealing is generally carried out by the following three ways, namely copper pads, copper pads and glue, and O-shaped rings. When the copper gasket is used for sealing, the copper gasket has high requirements on the sizes of assembly clamping force, a screw plug, form and position tolerance (mainly perpendicularity of a supporting surface relative to a thread) and surface roughness of the end surface of a supporting shell, and the parallelism of the two end surfaces of the copper gasket, and if any one size is changed, the sealing failure can be caused, and the sealing reliability is poor. The copper pad and the glue can meet the sealing requirement when being sealed, but the glue can influence the cleanliness, and the residual glue can flow and adhere to other parts to influence the product function. When the O-shaped ring is used for sealing, the 0-shaped ring is easy to fall off, so that the assembly is inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the prior plug screw has poor sealing reliability, 0-shaped ring is easy to drop and inconvenient to assemble, and providing a plug screw with high sealing performance.
For realizing the purpose of the above utility model, the technical scheme of the utility model is that:
a plug screw with high sealing performance comprises a plug screw body and a sealing ring; the plug screw body comprises a plug screw seat, a transition rod and a plug screw rod which are coaxially and sequentially connected, the diameter of the plug screw seat is larger than that of the plug screw rod, and the diameter of the plug screw rod is larger than that of the transition rod; an annular sealing groove is formed in the end face, close to the transition rod, of the screw plug seat, the radial section of the annular sealing groove is rectangular, and the diameter of the inner groove wall of the annular sealing groove is the same as that of the transition rod; the outer peripheral surface of the screw plug rod is provided with an external thread which is used for being connected with the transmission shell; the sealing ring is an annular sealing ring, the cross section of the sealing ring is a notch rectangle, the notch rectangle is provided with a notch, and the notch is arranged on the inner circumferential surface of the sealing ring; the sealing ring is arranged in the annular sealing groove, the thickness of the sealing ring is larger than the depth of the annular sealing groove, and the unfilled corner is arranged on one side close to the transition rod.
Furthermore, a screw plug slot is formed in the end face, far away from the transition rod, of the screw plug seat and used for mounting and dismounting the screw plug.
Furthermore, the screw plug slot is a straight slot, a cross slot or an inner hexagonal slot.
Furthermore, the screw plug seat is provided with an annular gap on the outer peripheral surface close to the transition rod, so that the influence on the assembly tightness caused by the flanging of the edge of the screw plug during the material cutting can be avoided.
Further, the inside of plug screw rod is provided with the cavity for alleviate the weight of plug screw body.
Further, the sealing ring is a fluororubber sealing ring.
Further, the transition rod and the plug screw rod are connected through a smooth curved surface.
Further, an outer hexagonal boss is arranged on the plug seat, so that a hexagonal plug seat is formed.
Further, the plug screw body is made of metal.
Compared with the prior art, the utility model discloses technical scheme's beneficial effect does:
1. the utility model discloses the plug screw adopts the sealing washer to seal, and the cross section of this rubber circle is unfilled corner rectangle, and when the sealing washer of this kind of cross-section was sealed, sealing reliability was higher, and simultaneously, the sealing washer of this kind of cross-section was lower to the geometric tolerances requirement of part, and in addition, this plug screw is low to the clamp force requirement, only need guarantee that the holding surface pastes tightly and not hard up can.
2. The utility model discloses the sealing washer internal diameter of plug screw is less than the diameter of plug screw pole external screw thread, and this kind of setting can be in the same place the two integration, and simple to operate is reliable, and the sealing washer is difficult for droing in the installation, has reduced the installation degree of difficulty.
3. The utility model discloses the plug screw need not assemble copper pad and rubber coating alone, and assembly efficiency is high, has avoided the rubber coating to cause the risk of product trouble.
4. The utility model discloses the plug screw is compact with rubber circle and the integrated design of plug screw, need not increase the seal groove at the casing.
Drawings
Fig. 1 is a schematic structural view of a plug screw having high sealing performance according to the present invention;
FIG. 2 is a schematic view of the structure of the plug screw body of the present invention
FIG. 3 is an enlarged view of a portion of FIG. 1;
FIG. 4 is a schematic structural view of a screw plug slot in the screw plug seat of the present invention;
fig. 5 is a schematic structural view of the sealing ring of the present invention;
fig. 6 is a schematic view of the installation of the plug screw having high sealing performance according to the present invention.
Reference numerals: 1-a screw plug body, 2-a sealing ring, 11-a screw plug seat, 12-a transition rod, 13-a screw plug rod, 14-an annular sealing groove, 15-a screw plug slot, 16-an annular notch, 18-an outer hexagonal boss and 21-a notch.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments.
The utility model provides a plug screw with high sealing performance, the cross section of a sealing ring of the plug screw is a rectangle with unfilled corners, and the sealing reliability is higher when the sealing ring with the section is used for sealing; meanwhile, the sealing ring with the section has lower requirements on form and position tolerance of parts; in addition, the screw plug has low requirement on the clamping force, and only the support surface is required to be tightly attached and not loosened.
As shown in fig. 1 to 6, the plug screw with high sealing performance provided by the present invention comprises a plug screw body 1 and a sealing ring 2; the plug screw body 1 comprises a plug screw seat 11, a transition rod 12 and a plug screw rod 13 which are coaxially connected in sequence, the diameter of the plug screw seat 11 is larger than that of the plug screw rod 13, and the diameter of the plug screw rod 13 is larger than that of the transition rod 12; an annular sealing groove 14 is formed in the end face, close to the transition rod 12, of the screw plug seat 11, the radial section of the annular sealing groove 14 is rectangular, and the diameter of the inner groove wall of the annular sealing groove 14 is the same as that of the transition rod 12; the outer peripheral surface of the screw plug rod 13 is provided with an external thread for connecting with a transmission shell; the sealing ring 2 is an annular sealing ring, the cross section of the sealing ring is a notch rectangle, the notch rectangle is provided with a notch 21, and the notch 21 is arranged on the inner circumferential surface of the sealing ring 2; the sealing ring 2 is arranged in the annular sealing groove 14, the thickness of the sealing ring 2 is larger than the depth of the annular sealing groove 14, and the unfilled corner 21 is arranged on one side of the transition rod 12.
As shown in fig. 2 and 3, the utility model discloses sealing washer 2's cross section sets up to unfilled corner rectangle, sets up the inner peripheral surface that is close to transition pole 12 one side with sealing washer 2 to the inclined plane, and sealing washer 2 is close to the turning of transition pole 12 one side and carries out the chamfer setting promptly, and sealing washer and hole thread contact can be avoided to this structure, avoids wearing and tearing sealing washer 2 for sealing washer 2's sealing reliability is higher, and life is longer.
In order to enable the screw plug to be mounted and dismounted more conveniently, a screw plug slot 15 is formed in the end face, far away from the transition rod 12, of the screw plug seat 11 and used for mounting and dismounting the screw plug, and the screw plug slot 15 can be a straight-line-shaped slot, a cross-shaped slot or an inner hexagonal slot. Meanwhile, the outer hexagonal boss 18 can be arranged on the plug screw seat 11, so that a hexagonal plug screw seat is formed, and the plug screw seat is more convenient to disassemble. In addition, be provided with annular gap 16 on the outer peripheral face that is close to plug screw 13 of plug screw seat 11, avoid because of the hexagonal edge turn-ups that leads to when the plug screw hexagon head blank, to producing the influence to assembly fastening nature.
The utility model discloses in the plug screw, sealing washer 2 can be rubber seal, and 1 accessible metal material preparation of plug screw body. The interior of the plug screw 13 is provided with a cavity for reducing the weight of the plug screw body 1. To avoid damaging the sealing ring 2, the transition rod 12 and the plug screw 13 are connected by a smooth curved surface.
The utility model discloses plug screw simple to operate during the installation, places sealing washer 2 in the annular seal groove, with the plug screw tight back, the rubber circle of plug screw inslot is compressed tightly, forms sealed closed loop between hole screw thread and terminal surface, guarantees sealedly.
Based on the structure, the utility model provides a plug screw has following characteristics.
The utility model discloses the plug screw requires lowly to clamping force, only need guarantee that the holding surface pastes tightly and not hard up can, and copper pad seal structure needs sufficient packing force to make the copper pad can warp in the embedding sealing surface.
The utility model discloses the plug screw adopts the sealing washer to seal, and the cross section of this rubber circle is unfilled corner rectangle, and when the sealing washer of this kind of cross-section was sealed, sealing reliability was higher, and simultaneously, the sealing washer of this kind of cross-section was lower to the geometric tolerances requirement of part.
The utility model provides a plug screw is because of rubber circle warp filling capacity and is far higher than the copper pad, so the geometric tolerances requirement to the part is lower, and simultaneously, this plug screw need not assemble copper pad and rubber coating alone, and assembly efficiency is high, has avoided the rubber coating to cause the risk of product trouble.
The utility model provides a plug screw is compact with rubber circle and the integrated design of plug screw, need not increase the seal groove at the casing, simultaneously, and the sealing washer internal diameter is less than the diameter of plug screw pole external screw thread, and this kind of setting can be in the same place the two is integrated, and simple to operate is reliable, and the sealing washer is difficult to drop in the installation, has reduced the installation degree of difficulty.
Claims (9)
1. A plug screw with high leakproofness is characterized in that: comprises a plug screw body (1) and a sealing ring (2);
the plug screw comprises a plug screw body (1) and a plug screw body (13), wherein the plug screw body comprises a plug screw seat (11), a transition rod (12) and a plug screw rod (13) which are coaxially connected in sequence, the diameter of the plug screw seat (11) is larger than that of the plug screw rod (13), and the diameter of the plug screw rod (13) is larger than that of the transition rod (12);
an annular sealing groove (14) is formed in the end face, close to the transition rod (12), of the screw plug seat (11), the radial section of the annular sealing groove (14) is rectangular, and the diameter of the inner groove wall of the annular sealing groove (14) is the same as that of the transition rod (12);
the outer peripheral surface of the screw plug rod (13) is provided with an external thread which is used for being connected with a transmission shell;
the sealing ring (2) is an annular sealing ring, the cross section of the sealing ring is a notch rectangle, the notch rectangle is provided with a notch (21), and the notch (21) is arranged on the inner circumferential surface of the sealing ring (2);
the sealing ring (2) is arranged in the annular sealing groove (14), the thickness of the sealing ring (2) is larger than the depth of the annular sealing groove (14), and the unfilled corner (21) is arranged on one side close to the transition rod (12).
2. The plug screw having high sealability according to claim 1, wherein: and a screw plug slot (15) is formed in the end face, far away from the transition rod (12), of the screw plug seat (11) and used for mounting and dismounting the screw plug.
3. The plug screw having high sealability according to claim 2, wherein: the screw plug slot (15) is a straight slot, a cross slot or an inner hexagonal slot.
4. The plug screw having high sealability of claim 1 or 2 or 3, wherein: the peripheral face that screw plug seat (11) is close to transition pole (12) is provided with annular breach (16) on for edge turn-ups when avoiding because of the screw plug blank produces the influence to assembly fastening nature.
5. The plug screw having high sealability of claim 4, wherein: the screw plug is characterized in that a cavity is arranged in the screw plug rod (13) and used for reducing the weight of the screw plug body (1).
6. The plug screw having high sealability of claim 5, wherein: the sealing ring (2) is a fluororubber sealing ring.
7. The plug screw having high sealability of claim 6, wherein: the transition rod (12) is connected with the screw plug rod (13) through a smooth curved surface.
8. The plug screw having high sealability of claim 7, wherein: an outer hexagonal boss (18) is arranged on the screw plug seat (11), so that a hexagonal screw plug seat is formed.
9. The plug screw having high sealability of claim 8, wherein: the plug screw body (1) is made of metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120431546.8U CN214661867U (en) | 2021-02-26 | 2021-02-26 | Plug screw with high leakproofness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120431546.8U CN214661867U (en) | 2021-02-26 | 2021-02-26 | Plug screw with high leakproofness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214661867U true CN214661867U (en) | 2021-11-09 |
Family
ID=78449741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120431546.8U Active CN214661867U (en) | 2021-02-26 | 2021-02-26 | Plug screw with high leakproofness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214661867U (en) |
-
2021
- 2021-02-26 CN CN202120431546.8U patent/CN214661867U/en active Active
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