A kind of nut of hydraulic fittingTechnical field
The present invention relates to a kind of hydraulic fitting, especially relate to a kind of nut of hydraulic fitting.
Background technique
Such as Fig. 1 between inner edge and the inner edge screw thread withdrawing place of joint, nut body of six face portion and nut body outer rim of nut body of sign hydraulic fitting and the inner edge and the withholding of joint core of nut body R shape arc fillet is not set between the step; In actual withholding; This three place is the position that stress is concentrated; Be easy to cause nut when withholding or assemble, to ftracture, make the assembly of whole hydraulic pressure body install defective.
Summary of the invention
The objective of the invention is a kind of nut of hydraulic fitting is improved, solve nut body three place's easy of crack problems in the existing technology.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of nut of hydraulic fitting; The joint core, the sleeve that comprise nut body and coupling nut body; It is characterized in that: six face portion of described nut body and the joint of nut body outer rim are provided with a R shape arc fillet; Be provided with the 2nd R shape arc fillet between the inner edge of described nut body and the inner edge screw thread withdrawing place, withholding of the inner edge of described nut body and joint core is provided with the 3rd R shape arc fillet between the step.
Concrete, the angle angle of a described R shape arc fillet is 30 °.
Concrete, the angle angle of described the 2nd R shape arc fillet is 45 °.
Concrete, the angle angle of described the 3rd R shape arc fillet is 90 °.
Beneficial effect of the present invention: owing to adopt above-mentioned three place's nuts position easy to crack is provided with suitable R shape arc fillet, to reduce concentrating of stress, the cracking phenomena that can obviously reduce nut body takes place.It is simple in structure, is easy to realize.
Below will combine accompanying drawing and embodiment, the present invention will be carried out comparatively detailed explanation.
Description of drawings
Fig. 1 is existing hydraulic tube general assembly organigram.
Fig. 2 is the hydraulic tube general assembly organigram after improving.
Fig. 3 is the organigram that the nut body of Fig. 2 amplifies.
Among the figure: 1. nut body, 2. the joint core, 3. sleeve, 4. six face portion, 5. the nut body outer rim, 6. a R shape arc fillet, 7. inner edge, 8. inner edge screw thread withdrawing place, 9. the 2nd R shape arc fillet, 10. withhold step, 11. the 3rd R shape arc fillets.
Embodiment
As shown in Figure 1; Between theinner edge 7 of six face portion 4 of the nut body 1 of existing hydraulic fitting and the joint of nut bodyouter rim 5, nut body 1 and the inner edge screwthread withdrawing place 8 and withholding of theinner edge 7 of nut body 1 and joint core 2 R shape arc fillet is not set between thestep 10; In actual withholding; This three place is the position that stress is concentrated, and is easy to cause nut when withholding or assemble, to ftracture, and makes the assembly of whole hydraulic pressure body install defective.
Embodiment; Like Fig. 2, shown in Figure 3; A kind of nut of hydraulic fitting comprises it is characterized in thatjoint core 2, the sleeve 3 of nut body 1 and coupling nut body 1: six face portion 4 of described nut body 1 are provided with a Rshape arc fillet 6 with the joint of nut bodyouter rim 5; Be provided with the 2nd Rshape arc fillet 9 between theinner edge 7 of described nut body 1 and the inner edge screwthread withdrawing place 8, withholding of theinner edge 7 of described nut body 1 andjoint core 2 is provided with the 3rd Rshape arc fillet 11 between thestep 10.
Concrete, the angle angle of a described Rshape arc fillet 6 is 30 °.
Concrete, the angle angle of described the 2nd Rshape arc fillet 9 is 45 °.
Concrete, the angle angle of described the 3rd Rshape arc fillet 11 is 90 °.
Above embodiment describes preferred implementation of the present invention; Be not that scope of the present invention is limited; Design under the prerequisite of spirit not breaking away from the present invention; Various distortion and improvement that the common engineers and technicians in related domain make technological scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
The present invention does not relate to all identical with the existing technology existing technology that maybe can adopt of part and realizes.