Service HotlineThe positioning pin is a pin designed to accurately position the two adjacent parts of the mold in a mold composed of two or more parts. It can be seen that the positioning pin plays a positioning role, and the mold must be accurately synchronized when it is closed. product, and the positioning pin can make the upper and lower molds play a role in accurate positioning. In the mold design and manufacture of Yueluo, the positioning pin is one of the most common parts. Since it is only used for positioning between parts, few people will pay too much attention to it. In the cold stamping process of Yueluo, the dimensional accuracy of the blanking parts depends on the size of the working part of the punch and the concave die, and the dimensional difference between them constitutes the blanking die gap. Gap is an important process parameter for die design, and its size has a great influence on the quality of the section of the blanking part, the blanking force, and the life of the die. If the gap is too large, punching burrs will appear in punching; if the gap is too small, secondary cracks will occur in the section and extrusion burrs will appear, which will make the quality of the section after punching unsatisfactory, and a reasonable gap will not only help the punching section. The improvement of the quality also contributes to the improvement of the lifespan of the 6-pack.
Nuts on the market still have certain defects. The bolts rely on multiple nuts against each other to prevent loosening. This method cannot be completely locked. The bolts are easily loosened when subjected to huge pressure and vibration, which hides potential safety hazards and has a protective effect. Bad problem, for this, we propose a nut with self-locking function
In view of the above situation, the technical problem to be solved by Guangdong Yueluo Hardware Industry Co., Ltd. is to provide a self-expanding semi-solid installation rivet, the purpose is to solve the existing connection between plastic shells, lightweight plates, insulating materials, circuit boards, or any other In the case of thin, light-weight materials, the grip and bonding force of the rivet itself on the mounting surface is weaker than that of the rivets that are screwed and installed by manual operation. The rivet structure needs to be improved and strengthened when the material is installed.
GB/T3103.3-2000 churchill cityFastener Tolerance Flat Washers 2 GB/T5286-2001 General Scheme of Flat Washers for Bolts, Screws and Nuts 3 GB/T9074.1-2002 Bolts or Screws and Flat Washers Assemblies 4 GB/T9074. 18-2002 churchill citySelf-tapping screws and flat washers assemblies 5 GB/T 95-2002 churchill citychurchill cityFlat washers C grade 6 GB/T96.1-2002 Large washers A grade 7 GB/T96.2-2002 Large washers C grade 8 GB/T97. 1-2002 Flat washer Class A 9 GB/T97.2-2002 Flat washer chamfered Class A 10 GB/T97.4-2002 Flat washer for screw and washer assemblies 11 GB/T97.5-2002 Flat washer churchill citySelf-tapping screws and washers assemblies 12 GB/T848-2002 Small washers Class A 13 GB/T5287-2002 Extra large washers Class C 14 GB/T4678.13-2003 Die-casting mold parts Part 13: Push plate washers 15 GB/T4605 -2003 Rolling bearing thrust needle roller and cage assemblies and thrust washers 16 GB/T97.3-2000 churchill citychurchill cityFlat washers for pins 17 GB/T18230.5-2000 churchill citychurchill cityFlat washers for bolted structures quenched and tempered 18 GB/T9074.5 -2004 Cross recessed small pan head screw and flat washer assembly 19 GB/T9074.20-2004 Cross recessed hexagon head tapping screw and flat washer assembly 20 GB/T3762-1983 Sharp angle sealing washer for ferrule type pipe joint 21 GB/T1231-2006 Specifications for high-strength large hexagon head bolts, large hexagon nuts and washers for steel structures 24 GB/T5649-2008 Lock nuts and washers for pipe joints and washers 27 GB/T10447-2008 Elements and tolerances of semicircular thrust washers for sliding bearings 28 GB/T94.1-2008 Specifications for elastic washers Spring washers 29 GB/T10446-2008 Dimensions and tolerances for full circle thrust washers for sliding bearings 30 GB/ T93-1987 standard churchill citychurchill cityspring washer 31 GB/T94.2-1987 elastic washer technical conditions toothed, serrated churchill citychurchill citylock washer 32 GB/T98-1988 churchill citystop washer technical conditions 33 GB/T849-1988 spherical washer 34 GB/T850- 1988 Conical Washer 35 GB/T851-1988 Split Washer 36 GB/T852 -1988 churchill citySquare bevel washer for I-beam 37 GB/T853-1988 churchill citychurchill citySquare bevel washer for channel steel 38 GB/T854-1988 Single-ear churchill citystop washer 39 GB/T7244-1987 Heavy-duty churchill citychurchill cityspring washer 40 GB/T855-1988 Double-ear stop Dynamic washer 41 GB/T7245-1987 Saddle churchill citychurchill cityspring washer 42 GB/T7246-1987 Wave churchill citychurchill cityspring washer 43 GB/T856-1988 Outer tongue churchill citystop washer 44 GB/T858-1988 Stop washer for churchill cityround nut 45 GB/T859-1987 Light churchill citychurchill cityspring washer 46 GB/T860-1987 Saddle elastic washer 47 GB/T861.1-1987 churchill cityInternal tooth churchill citychurchill citylock washer 48 GB/T861.2-1987 Internal serrated churchill citychurchill citylock washer 49 GB/T862.1-1987 External tooth lock 50 GB/T862.2-1987 External Serrated Lock Washers 51 GB/T955-1987 Wave Elastic Washers 52 GB/T27938-2011 Sliding Bearing Thrust Washers Failure Damage Terms, Appearance Features and Reasons 53 GB/T956.1- 1987 Conical churchill citychurchill citylock washer 54 GB/T956.2-1987 Conical serrated churchill citychurchill citylock washer 55 GB/T28697-2012 Rolling bearing self-aligning thrust ball bearing and self-aligning seat washer Dimensions 56 GB/T9074.2-1988 Cross groove disc Head screw and male serrated churchill citychurchill citylock washer assembly 57 GB/T9074.3-1988 churchill cityCross recessed pan head screw and churchill citychurchill cityspring washer assembly 58 GB/T9074.4-1988 churchill cityCross recessed pan head screw, churchill citychurchill cityspring washer and flat washer assembly 59 GB /T9074.7-1988 Cross recessed small pan head screw and churchill citychurchill cityspring washer assembly 60 GB/T9074.8-1988 Cross recessed small pan head screw and churchill citychurchill cityspring washer and flat washer assembly 61 GB/T9074.9-1988 Cross recessed countersunk Head screw and conical churchill citychurchill citylock washer assembly 62 GB/T9074.10-1988 Cross recessed countersunk head screw and conical churchill citychurchill citylock washer assembly 63 GB/T9074.11-1988 Cross recessed hexagon head bolt and flat washer assembly Parts 64 GB/T9074.12-1988 Cross recessed hexagon head bolt and churchill citychurchill cityspring washer assembly 65 GB/T9074.13-1988 Cross recessed hexagon head bolt, churchill citychurchill cityspring washer and flat washer assembly 66 GB/T9074.15- 1988 Hexagon head bolt and churchill citychurchill cityspring washer assembly 67 GB/T9074.16-1988 Hexagon head bolt and serrated churchill citychurchill citylock washer assembly 68 GB/T9074.17-1988 Hexagon head bolt, churchill citychurchill cityspring washer and flat washer assembly 69 GB/T9074 .26-1988 Spring Washers for Assemblies 70 GB/T9074.27-1988 External Serrated Lock Washers for Assemblies 71 GB/T9074.28-1988 Conical Lock Washers for Assemblies 72 GB/T1030-1988 Inner Spherical Washers[1]
In the prior art, spring pads are fixed to the seat pan or to the height adjuster tube. However, in the absence of a seat pan, additional components are required to secure the spring pads to prevent movement of the spring pads in the longitudinal direction of the vehicle. FIG. 1 shows such a seat spring pad 2 , which is fixed to the seat pad 1 by means of additional fixing parts 4 . Additional weight is added due to the use of additional fixing parts and a separate step is required in the assembly process to connect the fixing parts to the spring pads. During use, there may be noise between the spring cushion and the seat cushion
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