A solar cell panel according to an embodiment of the invention includes a solar cell module, a frame including a module coupler coupled with a peripheral edge of the solar cell module and a leg which is connected to the module coupler and includes a plurality of holes, and a plurality of nut members fixed to the leg of frame, each of the plurality of nut members including a bolt insertion hole. Each of the plurality of nut members includes a head, a rivet connected to the head, and a fixer positioned at one end of the rivet. The head is positioned on a first surface of the leg, and the fixer is positioned on a second surface opposite the first surface of the leg. The rivet is inserted into each of the plurality of holes of the leg.

A floating fixing component and a mounting method thereof are introduced. The floating fixing component includes at least a stop section and an application section. The stop section is used to abut against an object to prevent the floating fixing component from separating from the object. The floating fixing component and the object have a floating space existed between them, such that the floating fixing component can float and shift on and relative to the object. With these arrangements, the floating fixing component can be mounted to an object while the application section can be fastened to or disconnected from another object. In this manner, at least two objects can be repeatedly and quickly connected to and disconnected from one another.

An insert for connecting to a receiving structure having at least two parallel members includes having a first end and a second end opposite to the first end; a first spline disposed at the first end of the cylinder, wherein the first spline is arranged circumferentially on an outer surface of the cylinder; and an interlocking clinch disposed at the second end of the cylinder and circumferentially around the cylinder; wherein the first spline and the interlocking clinch are respectively fastened to two parallel members of the structure, and at least one of the first and second ends of the cylinder is fastened to a fitting member through a connecting member. The first spline can be fitted to one member of the structure with interference, and the interlocking clinch is self-fastened with another member of the structure due to material flow.

A hole punch and a method for piercing a workpiece wherein a hole punch includes a sheet metal part and a piercing body attached thereto which carries out the piercing function and which is provided with a thread cylinder or can be provided with a thread cylinder, for example by pressing a threaded pin into a centrally arranged passage of the hole punch, wherein the hole punch can also be formed in one piece as a piercing body with a sheet metal-like flange. Furthermore a method is claimed for the manufacture of the hole punch.

A hole punch and a method for piercing a workpiece wherein a hole punch includes a sheet metal part and a piercing body attached thereto which carries out the piercing function and which is provided with a thread cylinder or can be provided with a thread cylinder, for example by pressing a threaded pin into a centrally arranged passage of the hole punch, wherein the hole punch can also be formed in one piece as a piercing body with a sheet metal-like flange. Furthermore a method is claimed for the manufacture of the hole punch.

Method for manufacturing a clinch nut, comprising: cold forging a steel body including a weight percentage of carbon comprised between 0.15% and 0.25% inclusive to form a workpiece including a pliable section designed to deform into a crimping bead and a connection section, applying a heat treatment to the workpiece, and tapping the connection section to form an internal thread.

The invention relates to a method for producing a component bond (70, 140) comprising: a fastening structure (60, 160) that has at least one component layer (60A, 60a; 160a, 160b); and a thermoplastic connecting element (10, 110) having a head (12, 112) and a shank (14, 114), in which method the connecting element (10, 110) is driven into the fastening structure (60, 160) under pressure whilst rotating, such that the shank (14, 114) penetrates the fastening structure (60, 160). The connecting element (10, 110), after penetrating the fastening structure (60, 160), is converted by friction into a softened, free-flowing state in a die (44, 144) which is placed against the fastening structure (60, 160) in the opposite direction to the driving direction, resulting in a thicker section (22, 22) that extends beyond the radial extent of some sections of the shank (14, 114). The fastening structure (60, 160) is thus interlockingly held between the head (12, 112) and the thicker section (22, 122).

A standoff fastener for attaching to a blind hole in a metal panel. The fastener has a substantially cylindrical body with a short shank that extends downwardly from the body into the hole. The shank has an inwardly extending collar with a first inwardly facing chamfer on the top and a second outwardly facing chamfer located on the bottom. The body has a shoulder at the bottom with a circular recess adjacent to and encircling the shank. The shank is radially divided into four equal segments which are separated by four radial slots. When the shank is spread outwardly by a center installation punch pressing against the first chamfer, the outer distal edge of the shank is pressed into the side wall of the hole, while an edge at the top of the second chamfer embeds into the end wall of the hole.

A hole punch and a method for piercing a workpiece wherein a hole punch includes a sheet metal part and a piercing body attached thereto which carries out the piercing function and which is provided with a thread cylinder or can be provided with a thread cylinder, for example by pressing a threaded pin into a centrally arranged passage of the hole punch, wherein the hole punch can also be formed in one piece as a piercing body with a sheet metal-like flange. Furthermore a method is claimed for the manufacture of the hole punch.

A fastener assembly includes a first component including a first fastener opening that has a cylindrical portion and a conical portion. A second component includes a second fastener opening. A fastener for extending through the first fastener opening and the second fastener opening and a clinch nut for attaching to the fastener is included.