CN204586857U - A kind of double-cavity vacuum servo-unit of novel sealing structure - Google Patents
A kind of double-cavity vacuum servo-unit of novel sealing structure Download PDFInfo
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- CN204586857U CN204586857U CN201520149676.7U CN201520149676U CN204586857U CN 204586857 U CN204586857 U CN 204586857U CN 201520149676 U CN201520149676 U CN 201520149676U CN 204586857 U CN204586857 U CN 204586857U
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Abstract
The utility model relates to field of mechanical technique, specifically a kind of double-cavity vacuum servo-unit of novel sealing structure, comprise screw rod, front case and rear housing, the front case of double-cavity vacuum servo-unit is passed in the front end of two screw rods, the rear housing of double-cavity vacuum servo-unit is passed in the rear end of two screw rods, O type circle is adopted to be tightly connected between the front side of screw rod and the inside face of front case, riveting is adopted between the rear side of screw rod and the inside face of rear housing, the edge of rear housing is buckled on the edge of front case, adopts riveting between rear housing and front case.Compared with the existing technology, screw rod adopts riveting method standing screw on rear housing to the utility model, uses O type circle to seal between screw rod and front case, and between forward and backward housing, riveted joint sealing, improves the sealing property of double-cavity vacuum servo-unit; Screw rod and forward and backward housing integrated is linked to be a rigid body, the holistic resistant behavior of double-cavity vacuum servo-unit is got a promotion after riveting.
Description
Technical field
The utility model relates to field of mechanical technique, specifically a kind of double-cavity vacuum servo-unit of novel sealing structure.
Background technology
At present, in existing double-cavity vacuum servo-unit, the connection mode between screw rod and housing as shown in Figure 1, is sealed by rubber pad 3 between screw rod 1 and housing 2.Such hermetically-sealed construction, need to carry out pretension to product when assembling, will increase an internal force like this, holistic resistant behavior is poor.In addition, along with the increase of period of service, rubber pad 3 there will be aging situation, thus causes the leak tightness of double-cavity vacuum servo-unit to be affected.
Therefore, need design one to promote holistic resistant behavior, again can the double-cavity vacuum servo-unit of novel sealing structure of lift-off seal performance.
Summary of the invention
The purpose of this utility model overcomes the deficiencies in the prior art, provides one and can either promote holistic resistant behavior, again can the double-cavity vacuum servo-unit of novel sealing structure of lift-off seal performance.
In order to achieve the above object, the utility model devises a kind of double-cavity vacuum servo-unit of novel sealing structure, comprise screw rod, front case and rear housing, it is characterized in that: the front case of double-cavity vacuum servo-unit is passed in the front end of two screw rods, the rear housing of double-cavity vacuum servo-unit is passed in the rear end of two screw rods, O type circle is adopted to be tightly connected between the front side of screw rod and the inside face of front case, riveting is adopted between the rear side of screw rod and the inside face of rear housing, the edge of rear housing is buckled on the edge of front case, adopts riveting between rear housing and front case.
The front side of described screw rod is provided with riveted structure, and boss to be set on screw rod and to be positioned at riveted joint platform near the side of front case.
Described boss extruding is also riveted on rear housing together with the contact surface of riveted joint platform.
Compared with the existing technology, screw rod adopts riveting method standing screw on rear housing to the utility model, uses O type circle to seal between screw rod and front case, and between forward and backward housing, riveted joint sealing, improves the sealing property of double-cavity vacuum servo-unit; Screw rod and forward and backward housing integrated is linked to be a rigid body, the holistic resistant behavior of double-cavity vacuum servo-unit is got a promotion after riveting.
Accompanying drawing explanation
Fig. 1 is the structural representation of this prior art.
Fig. 2 is structural representation of the present utility model.
Fig. 3 is screw part structural representation of the present utility model.
See Fig. 1-Fig. 3,1 is screw rod; 2 is housing; 3 is rubber pad; 4 is rear housing; 5 is front case; 6 is O type circle; 7 is boss; 8 is riveted joint platform; 9 is contact surface.
Detailed description of the invention
Now by reference to the accompanying drawings the utility model is described further.
See figure Fig. 2 and Fig. 3, the utility model devises a kind of double-cavity vacuum servo-unit of novel sealing structure, comprises screw rod, front case and rear housing.The front case 5 of double-cavity vacuum servo-unit is passed in the front end of two screw rods 1, the rear housing 4 of double-cavity vacuum servo-unit is passed in the rear end of two screw rods 1, O type circle 6 is adopted to be tightly connected between the front side of screw rod 1 and the inside face of front case 5, riveting is adopted between the rear side of screw rod 1 and the inside face of rear housing 4, the edge of rear housing 4 is buckled on the edge of front case 5, adopts riveting between rear housing 4 and front case 5.
In the utility model, the front side of screw rod 1 is provided with riveted joint platform 8, and boss 7 to be set on screw rod 1 and to be positioned at the side of riveted structure 8 near front case 5.After boss 7 extruding change is flat, boss 7 clamps rear housing 4 together with the contact surface 9 of riveted joint platform 8, thus is riveted on rear housing 4.Squareness when can control screw rod riveted joint like this and the deflection on rear housing 4 surface.
Because aluminum rivet performance is relative to better steel, therefore, in the utility model, aluminum is adopted to rivet.
Screw rod 1 of the present utility model adopts riveting method standing screw 1 on rear housing 4, uses O type circle 6 to seal between screw rod 1 and front case 5, and between forward and backward housing, riveted joint sealing, improves the sealing property of double-cavity vacuum servo-unit; Screw rod 1 and forward and backward housing integrated is linked to be a rigid body, the holistic resistant behavior of double-cavity vacuum servo-unit is got a promotion after riveting.
Claims (3)
1. the double-cavity vacuum servo-unit of a novel sealing structure, comprise screw rod, front case and rear housing, it is characterized in that: the front case (5) of double-cavity vacuum servo-unit is passed in the front end of two screw rods (1), the rear housing (4) of double-cavity vacuum servo-unit is passed in the rear end of two screw rods (1), O type circle (6) is adopted to be tightly connected between the front side of screw rod (1) and the inside face of front case (5), riveting is adopted between the rear side of screw rod (1) and the inside face of rear housing (4), the edge of rear housing (4) is buckled on the edge of front case (5), riveting is adopted between rear housing (4) and front case (5).
2. the double-cavity vacuum servo-unit of a kind of novel sealing structure according to claim 1, it is characterized in that: the front side of described screw rod (1) is provided with riveted joint platform (8), boss (7) is set in screw rod (1) and goes up and be positioned at the side of riveted structure (8) near front case (5).
3. the double-cavity vacuum servo-unit of a kind of novel sealing structure according to claim 2, is characterized in that: described boss (7) extruding is also riveted on rear housing (4) together with the contact surface (9) of riveted joint platform (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520149676.7U CN204586857U (en) | 2015-03-17 | 2015-03-17 | A kind of double-cavity vacuum servo-unit of novel sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520149676.7U CN204586857U (en) | 2015-03-17 | 2015-03-17 | A kind of double-cavity vacuum servo-unit of novel sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204586857U true CN204586857U (en) | 2015-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520149676.7U Active CN204586857U (en) | 2015-03-17 | 2015-03-17 | A kind of double-cavity vacuum servo-unit of novel sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204586857U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109278731A (en) * | 2018-11-27 | 2019-01-29 | 辽宁工业大学 | A kind of automobile-used electric-control auxiliary brake device |
-
2015
- 2015-03-17 CN CN201520149676.7U patent/CN204586857U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109278731A (en) * | 2018-11-27 | 2019-01-29 | 辽宁工业大学 | A kind of automobile-used electric-control auxiliary brake device |
| CN109278731B (en) * | 2018-11-27 | 2024-04-19 | 辽宁工业大学 | Electric control auxiliary braking device for vehicle |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |