Struts for assembly of small size seal rings in deep elongated holes
A technology with slender holes and small size, applied in hand-held tools, manufacturing tools, etc., can solve problems such as poor sealing performance and sealing rings that cannot be stretched smoothly, and achieve the effect of improving the success rate
Active Publication Date: 2017-06-27
NANJING CHENGUANG GRP
View PDF9 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The commonly used sealing ring assembly method is to first pinch the sealing ring with tweezers to compress its shape, and then use the tweezers to send the sealing ring into the sealing groove in the deep and elongated hole; because the sealing ring itself has a certain Elastic deformation, when the tweezers are loosened, the sealing ring will automatically snap into the sealing groove without falling off; then use a long rod with a tapered front end and a cylindrical rear end to extend into the deep and slender hole, and the long rod will hold the sealing ring Stretch it to make it fit the sealing groove; however, in actual use, there will be a problem that the sealing ring cannot be stretched smoothly
After research, it is found that when the long rod is inserted into the deep and slender hole, the sealing ring is instantly backlogged. Therefore, it is easy to happen that the sealing ring is not stretched out as expected after being squeezed, but the folds are backlogged. As a result, the sealing ring does not fit into the sealing groove, resulting in poor sealing performance
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0014] combine figure 1 :
[0015] The present invention is a strut used for assembling a small-sized seal ring in a deep and elongated hole. The strut is a cone and a cylinder in sequence along the axial direction, and a cross-cone section is symmetrically arranged on the side of the strut at an interval of 180° along the axial direction of the strut. And the guide groove of the cylindrical section, the depth of the guide groove gradually becomes shallower until it disappears from the boundary point of the conical section and the cylindrical section to the rear end of the cylindrical section.
[0016] A non-slip handle is provided at the rear end of the cylindrical section of the strut.
[0017] The guide groove is a trapezoidal groove with an arc at the bottom.
[0018] The angle between the two waists of the trapezoidal groove is 25°-40°; the angle between the axis of the guide groove and the axis of the strut is 3°-6°.
[0019] combine Figure 2 ~ Figure 3 :
[0020] ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a support rod for assembling a small-sized sealing ring in a small and deep hole. The support rod comprises a conical segment and a cylindrical segment in sequence in the axial direction, wherein guide grooves stretching across the conical segment and the cylindrical segment are symmetrically formed at an interval of 180 degrees in the side surface of the support rod in the axial direction of the support rod; and the guide grooves become shallower and shallower from the dividing point between the conical segment and the cylindrical segment to the rear end of the cylindrical segment and eventually disappear. As the gradually changing guide grooves are symmetrically formed at an interval of 180 degrees in the side surface of the support rod, the folds of the sealing ring are spread step by step with gradual changing of the guide grooves in the process that the support rod is stuck into the sealing ring. Therefore, the circumstance that the sealing ring is squeezed abruptly to be folded and cannot fit a sealing groove completely is avoided, and the assembling success rate is greatly improved.
Description
technical field [0001] The invention belongs to the technical field of mechanical processing and assembly, in particular to a support rod for assembling a small-sized sealing ring in a deep elongated hole. Background technique [0002] In some special mechanical assembly fields, it is necessary to install a small-sized sealing ring into the deep slender hole. Due to the integrated mechanism of the machine, the sealing ring must be installed inward from the only opening, so a special assembly process is required. To achieve the installation of the sealing ring. [0003] The commonly used sealing ring assembly method is to first pinch the sealing ring with tweezers to compress its shape, and then use the tweezers to send the sealing ring into the sealing groove in the deep and elongated hole; because the sealing ring itself has a certain Elastic deformation, when the tweezers are loosened, the sealing ring will automatically snap into the sealing groove without falling off; t...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B25B27/00
CPCB25B27/0028
Inventor 郭正宽刘长坤
Owner NANJING CHENGUANG GRP