A kind of special-shaped seal ring
Technical field
The utility model relates to a kind of seal ring, particularly a kind of special-shaped seal ring.
Background technique
At present, efficient housing waterproof sealing structure, housing coordinates with lid, mostly adopts boss and groove to fasten, and then coordinates O type circle, the mode sealed with multiple screw in compression.Also put into the groove of housing or lid by O type circle, push down the O type circle putting into housing or lid, finally with the sealing configuration of multiple screw in compression with the boss of lid or housing.But this sealing means, also exists following technical problem:
1. the pressure that bears at screw position and the position between screw and screw of O type circle is inconsistent.As O type circle at screw in compression place be stressed comparatively large, and the pressure suffered by O type circle between screw and screw is less, and therefore, O type circle pressurized is uneven, thus can produce gap, causes seal failure.
2. in addition, if housing design is thinner, or area is comparatively large, and the larger pressure between screw and screw can make housing produce bending, produces gap, affect the waterproof sealing of O type circle, then can not reach high-grade waterproof sealing with O type circle pressure surface.
Model utility content
The technical problems to be solved in the utility model is for above-mentioned the deficiencies in the prior art, and provides a kind of special-shaped seal ring, and this profiled seal coil structures is simple, and special-shaped seal ring pressurized can be made even, and sealing effect is reliable, can reach IP68 security level.
In addition, special-shaped seal ring of the present utility model is easy to assembly, can ensure in assembly process, and special-shaped seal ring there will not be upset, distortion, ensures special-shaped seal ring pressure surface planarization further, also namely ensures the reliability of sealing further.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of special-shaped seal ring, comprise seal ring body, be positioned in the groove of lid or housing, the shape of described seal ring body is rectangular or square, seal ring body comprises and is arranged at the ramp structure outside seal ring bodies top, the arcuate structure being arranged at seal ring body exterior bottom and the turnup structure be arranged at inside seal ring body, described ramp structure can form linear sealing structure with the first boss of housing or lid, and described turnup structure can be formed with the second boss of lid or housing and be sealed and matched.
The material of described seal ring body is silica gel or quality of rubber materials.
In described ramp structure, the angle of inclined-plane and horizontal plane is miter angle.
In described arcuate structure, the peak of cambered surface exceeds 0.6mm(than place plane also namely bow is high is 0.6mm), the arc radius of arcuate structure can design according to screw and screw spacing.
The bending angle of described turnup structure is 60-90 degree.
After the utility model adopts said structure, there is following beneficial effect:
1. the design of above-mentioned ramp structure, the first boss of the enable seal ring body of energy and housing or lid forms linear sealing structure, and inclined-plane pressurized can enter housing from the position of seal ring body pressurized by effectively anti-sealing, and sealing effect is reliable.
2. the design of above-mentioned arcuate structure, efficiently solves housing and lid when being screwed compression, and seal ring body is produced deformation by seal ring body jack-up because of the uneven or housing of being stressed, and the slight gap brought causes housing to enter water problem; Effectively improve waterproof sealing effect.
3. the design of above-mentioned turnup structure, easy to assembly, ensures in assembly process, there will not be upset, distortion, ensures pressure surface planarization.
4. above-mentioned special-shaped seal ring adopts and has high temperature resistant, that corrosion resistance is strong silica gel or quality of rubber materials, thus makes its long service life, and sealing can reach IP68 security level.
In sum, special-shaped seal ring of the present utility model, structure is simple, and be easy to production and processing, easy to assembly, cost is low, and sealing effect can reach IP68 grade, can be widely used in the high-effective water-proof sealing of housing.Solve boss and groove structure that current housing seal adopts mostly, coordinate the seal failure problem that the mode of O type circle sealing runs into.
Accompanying drawing explanation
Fig. 1 shows the perspective view of a kind of special-shaped seal ring of the utility model;
Fig. 2 shows the cross-sectional view along A-A face in Fig. 1;
Fig. 3 shows the sectional view of special-shaped seal ring in the utility model;
Fig. 4 shows the assembling cross-sectional view of special-shaped seal ring and housing and lid in the utility model;
Fig. 5 shows the structure for amplifying schematic diagram of encircled in Fig. 3;
Fig. 6 shows the three-dimensional assembly structure schematic diagram of special-shaped seal ring and lid in the utility model;
Fig. 7 shows the three-dimensional assembly structure schematic diagram of special-shaped seal ring and housing in the utility model;
Fig. 8 shows the perspective view of power shell.
Wherein have: 1. housing; 2. lid; 3. seal ring body; 4. screw; 5. ramp structure; 6. turnup structure; 7. arcuate structure; 8. the first boss; 9. the second boss; 10. groove.
Embodiment
Below in conjunction with accompanying drawing and concrete better embodiment, the utility model is described in further detail.
As shown in Fig. 4, Fig. 5 and Fig. 8, a kind of housing waterproof sealing structure, the special-shaped seal ring comprising housing 1, lid 2 and be arranged between the two.The housing 1 contacted with lid 2 is provided with the first boss 8 and groove 10; The lid 2 contacted with housing 1 is also provided with the second boss 9 and groove 10, and housing 1 and lid 2 are by boss and groove 10 clamping mutually.
As shown in Figure 1, Figure 2 and Figure 3, a kind of special-shaped seal ring, comprises seal ring body 3, be positioned in the groove 10 of lid 2 or housing 1, the shape of seal ring body 3 can be rectangular, also can be square, specifically can determine according to the shape of housing 1 with lid 2.
The turnup structure 6 that seal ring body 3 comprises the ramp structure 5 being arranged at seal ring body 3 top outer, the arcuate structure 7 being arranged at seal ring body 3 exterior bottom and is arranged at inside seal ring body 3.
In upper described ramp structure 5, the angle of inclined-plane and horizontal plane is preferably miter angle, and can form linear sealing structure with the first boss 8 of housing 1 or lid 2, can enter in housing from seal ring body 3 depressed position by effectively anti-sealing, sealing effect be reliable.The erection drawing of special-shaped seal ring of the present utility model and lid 2, as shown in Figure 6, with the assembling design sketch of housing 1, as shown in Figure 7.
Above-mentioned turnup structure 6 bending angle is preferably 60-90 degree, can be formed be sealed and matched with the second boss 9 of lid 2 or housing 1.Being designed with of turnup structure 6 is beneficial to easy to assembly, ensures that seal ring body 3 there will not be upset, distortion in assembly process, ensures the planarization of seal ring body 3 pressurized rear surface.
Above-mentioned arcuate structure 7, is arranged at the bottom outside of seal ring body 3, and in arcuate structure 7, the peak of cambered surface exceeds 0.6mm than place plane, and the arc radius of arcuate structure 7 can design according to screw 4 and screw 4 spacing.
Arcuate structure 7 has the following two kinds preferred embodiment:
1. can in the outside on the every bar limit of seal ring body 3, an overall arcuate structure 7 is set.
2., according to the quantity of required mounting screw 4 on the every bar limit of seal ring body 3, in each position corresponding with screw 4 installation position, arrange an arcuate structure 7, as shown in Figure 3, the long limit of seal ring body 3 is provided with two arcuate structures 7.
The setting of above-mentioned arcuate structure 7, effectively can solve lid 2 when being fixed and clamped with housing 1 screw 4, housing 1 produces deformation by screw and screw interval differential pressure, causes seal ring body 3 pressurized inequality, and generation gap, brings the problem of seal failure; Also namely arcuate structure 7 supplements screw 4 interval underpressure, buckling of shells distortion, produces the sealing in gap, increases sealing reliability further.
Further, the material of above-mentioned seal ring body 3 is silica gel or quality of rubber materials, preferably has high temperature resistant, that corrosion resistance is strong silica gel or quality of rubber materials, long service life.
In sum, profiled seal coil structures of the present utility model is simple, be easy to production and processing, cost is low, easy to assembly, sealing effect can reach IP68 security level, solves traditional O RunddichtringO and to be stressed inequality, the problem that sealing effect is not good enough or lost efficacy, can be widely used in the high-effective water-proof sealing of housing.