TWI859593B - Formable stopper - Google Patents

Abstract

A formable stopper applied to a fixing structure comprises a body having an assembly hole or an assembly section. The assembly hole or the assembly section includes a placement portion and an assembly portion. The assembly portion is in communication with or connected to the placement portion, or the placement portion is the assembly portion. The formable stopper further comprises a formable body. The formable body is adapted to be extruded, placed, or fitted into the placement portion, and extruded, placed, or fitted into the assembly portion, so as to form an interference structure or to form an interference force for preventing or avoiding the formable body from falling out of the assembly hole.

Description

Plastic stopper

The present invention provides a plastic stopper, in particular a plastic stopper used to prevent solder from flowing into a joint during welding.

According to the general conventional fixing device used for assembling the corresponding parts, it is composed of a body with a hollow part and a through-set part provided at one end of the body. When in use, a solder layer is provided on a fixing hole of a plate, and then the through-set part at one end of the body is inserted into a through-hole of a plate, so that the solder layer and the matching through-set part are fixed in the through-hole, and then the corresponding part is placed in the hollow part of the body, so as to achieve the effect of assembling the corresponding parts.

Although the above-mentioned commonly used fixing device can achieve the effect of assembling the corresponding parts; however, since there is no stopper in the hollow part of the body, when the through-hole at one end of the body is inserted into the through-hole of the plate for welding, the solder layer is often squeezed by the edge of the through-hole and the adsorption effect of the solder layer and the solder bonding layer of the outer coating of the body, and enters the hollow part of the body. In this way, when the hollow part of the body is assembled with the required corresponding parts, the corresponding parts cannot be smoothly placed in the hollow part due to the interference of the solder layer, resulting in inconvenience in the combination.

The current method of preventing the solder layer from entering the hollow part of the body is to set a blocking piece at the bottom of the hollow part, and the blocking piece can be assembled to the body when the body is manufactured. However, it is often found that the attached blocking piece has fallen off due to vibration before the body is installed on the board, so that the effect of preventing the solder layer from flowing into the body cannot be achieved.

The inventor then devoted all his energy to research and developed a plastic stopper that is not easy to fall off from the corresponding body, thereby preventing the solder layer from flowing into the assembly part of the body.

The present invention provides a plastic stopper, which is applied to a fixed structure, the fixed structure includes a body, the body has a combination hole or combination place, the combination hole or combination place includes an insertion part and a combination part, the combination part is connected to or connected to the insertion part, or the insertion part is the combination part. The plastic stopper includes a plastic body. The plastic body is suitable for squeezing or inserting or buckling into the insertion part, and squeezing or inserting or buckling into the combination part to form an interference structure or to form an interference force, which is used to prevent or prevent falling off from the combination hole or combination place.

Thus, the plastic stopper of one embodiment of the present invention can be prevented from falling off from the corresponding body due to the interference structure having sufficient interference force, thereby preventing the solder layer from flowing into the assembly part of the body when in liquid state. The plastic stopper of another embodiment of the present invention can be combined with the insertion part to serve as a fixed structure for the tool to be extracted to the welding position.

1: Object

10: Setup Department

100: Weldable surface

13: Solder layer

2: Fixed structure

20: Body

201: Corresponding to solderable surface

21: Plastic stopper

210: Plastic body

22: Assembly hole

23: Insertion section

230: Entrance

24: Assembly and connection part

240: Screw structure

241: Screw thread

25: Interference structure

250: Filling part

251: Interference Department

26:Jointing point

6: Long objects

8: Tools

89: Pushing piece

890: Pushing noodles

Figure 1 is a schematic diagram of the operation of the plastic stopper of a specific embodiment of the present invention being installed on a fixed structure.

Figure 2 is a cross-sectional schematic diagram of a fixed structure equipped with the plastic stopper of the present invention.

Figure 3 is a schematic diagram of the operation of installing the plastic stopper of a specific embodiment of the present invention to a fixed structure and then welding the fixed structure to an object.

Figure 4 is a schematic diagram of a plastic stopper combined with a fixed structure in a specific embodiment of the present invention.

Figure 5 is a second schematic diagram of a plastic stopper combined with a fixed structure in a specific embodiment of the present invention.

Figure 6 is a third schematic diagram of a plastic stopper combined with a fixed structure in a specific embodiment of the present invention.

Figure 7 is a schematic diagram of the fixed structure of a specific embodiment of the present invention being welded to an object through tool extraction.

In order to fully understand the purpose, features and effects of the present invention, the present invention is described in detail through the following specific embodiments and the attached drawings, as follows:

The present invention provides the following aspects.

Referring to FIGS. 1 and 2 , the present invention provides a plastic stopper 21, which is applied to a fixing structure 2. The fixing structure 2 includes a body 20, the body having a connecting hole 22, the connecting hole 22 including an insertion portion 23 and a connecting portion 24, the insertion portion 23 is located at the bottom of the body 20 and has an insertion port 230, the connecting portion 24 is connected to the insertion portion 23 and penetrates the body 20. The plastic stopper 21 includes a plastic body 210. The plastic body 210 is suitable for being squeezed or inserted or buckled into the insertion portion 23, and squeezed or inserted or buckled into the connecting portion 24, so as to form an interference structure 25 or an interference force, so as to prevent or prevent the stopper from falling off from the connecting hole 22. Specifically, the plastic stopper 21 is used to be squeezed, inserted, or buckled into the insertion portion 23 or the assembly portion 24 by applying external force.

Please refer to Figures 1 and 2. In one embodiment, the assembly portion 24 includes a screw thread structure 240. Therefore, the plastic body 210 is suitable for continuously squeezing into the screw thread structure 240 to form the interference structure 25.

Please refer to Figures 1 to 3. In one embodiment, the plastic stopper 21 is used to prevent the heated liquid solder (when the solder layer 13 is heated and becomes liquid) from flowing into the screw thread structure 240 during the welding process.

Please refer to Figures 1 to 3. In one embodiment, the plastic stopper 21 is used to prevent the heated liquid solder from flowing into the structure of the assembly part 24 during the welding process.

Please refer to Figures 1 to 3. In one embodiment, the plastic stopper 21 is used to prevent the heated liquid solder from flowing into the structure of the assembly part 24 during the surface mounting welding process.

As described above, the plastic stopper 21 of the present invention can be prevented from falling off from the corresponding body 20 due to the interference structure having sufficient interference force, thereby preventing the solder layer 13 from flowing into the assembly part 24 of the body 20 when in liquid state.

As shown in FIG. 1 and FIG. 2 , in one embodiment, the material of the plastic body 210 is Teflon, nylon, silicone, rubber, plastic, metal, or other heat-resistant and deformable materials, so as not to fall off, melt, or deform during the welding heating process or the surface mounting welding heating process. The interference structure 25 includes a filling portion 250 filling the insertion portion 23 and an interference portion 251 embedded in the assembly portion 24. A pushing member 89 can be used to push the plastic stopper 21 into the insertion portion 23 and the assembly portion 24. The pushing member 89 may have a pushing surface 890 for contacting the plastic stopper 21. The pushing force may come from manpower or a machine powered by oil pressure, air pressure, or the like. When the pushing member 89 pushes the plastic stopper 21, the outer edge of the plastic body 210 of the plastic stopper 21 will be blocked by the bottom of the inserting portion 23 and fill the edge of the inserting portion 23, and the unblocked central portion of the plastic body 210 will fill the assembly hole 22 downward. When the inserting portion 23 is filled, the excess plastic body 210 will overflow from the inserting portion 23 to generate burrs. The inserting portion 23 or the connecting portion 24 may be an R angle, a C angle, an arc angle, a concave portion, a convex portion, a step portion, an inclined portion, a column, a stud, a tooth portion, a curved portion, a buckle body, a block, a hollow body, a column or a threaded body, or the inserting portion 23 and the connecting portion 24 are the same structure, or the inserting portion 23 is the connecting portion 24. The plastic body 210 may be a sheet body, a washer, an elastic body, an R angle body, a C angle body, a right angle body, an arc angle body, a concave body, a convex body, a step body, an inclined surface body, a toothed body, a round body, a buckle body, a sphere, a curved surface body or a threaded body because it corresponds to the inserting portion 23.

As shown in FIG. 1 and FIG. 2 , in one embodiment, the interference portion 251 is embedded in at least one thread 241 of the thread structure 240 that is closest to the insertion portion 23. This allows the interference structure 25 to resist a thrust of at least 0.35 kgf. Specifically, the interference force generated between the filling portion 250 and the vertical wall of the insertion portion 23 and the assembly portion 24 can resist a thrust of about 0.05 to 0.2 kgf, and when the interference portion 251 is embedded in the thread 241, the interference force can be increased to a level that can resist a thrust of at least 0.35 kgf. In this way, the plastic stopper 21 is not easy to fall out when the fixed structure 2 equipped with the plastic stopper 21 is subjected to any degree of vibration. In general, the interference structure 25 is suitable for resisting a push or pull force of at least 0.0001kgf to 50kgf.

As shown in FIG. 3 , the fixing structure 2 equipped with the plastic stopper 21 of the present invention can be assembled to an object 1. The object 1 includes a setting portion 10 corresponding to the body 20, such as an opening. The setting portion 10 and the body 20 of the object 1 have a solderable surface 100 and a corresponding solderable surface 201, respectively, and a solder layer 13 is disposed on the solderable surface 100, but can also be disposed on the corresponding solderable surface 201, so that the solder layer 13 is liquefied into liquid solder by heating, and the liquid solder is solidified to solder the body 20 to the object 1. The plastic stopper 21 can prevent the liquid solder (solder layer 13 that is heated and becomes liquid) from flowing into the assembly hole 22 during the welding process. When the welding is completed, the plastic stopper 21 can be removed from the body 20 to restore the assembly function of the assembly hole 22. The plastic stopper 21 can be pushed out of the body 20 by a long object 6, such as a push pin, or a locking accessory (not shown) such as a screw can be directly locked into the assembly hole 22 to break and remove the plastic stopper 21. The object 1 can be a board, such as a printed circuit board (PCB), but is not limited thereto. The body 20 can be stored in a carrier (not shown) before being soldered to the object 1, and can be taken up above the object 1 by a tool 8 (as shown in FIG. 7 ) and placed on the setting portion 10. The object 1 can be a printed circuit board, or a printed circuit board provided with a solderable layer, or a printed circuit board provided with a solderable layer and a solder layer provided on the solderable layer.

Please refer to Figures 4 to 7. Another embodiment of the present invention provides a plastic stopper 21, which is applied to a fixed structure 2. Similar to the above-mentioned embodiment, the fixed structure 2 includes a body 20. The body 20 has an assembly 26. The assembly 26 includes an insertion portion 23 and an assembly 24, and the assembly 24 is connected to the insertion portion 23. The plastic stopper 21 includes a plastic body 210. The plastic body 210 is suitable for being inserted into the insertion portion 23. When a force is applied to the plastic body 210, it can be inserted into the assembly 24, thereby having the effect of preventing it from falling off from the assembly 26. The interference force is used for a tool in an automated material picking process to pick up the fixed structure 2 through the plastic body 210. The assembly part 24 includes a screw thread structure (as shown in FIG6 ) or a column structure (as shown in FIG5 ). Or the assembly part 24 is a buckle body with a recess (as shown in FIG4 ). The plastic body 210 is suitable for being squeezed into or buckled into the screw thread structure or column structure of the assembly part 24 to form the interference structure 25, or forming a part of the fixing structure 2.

As shown in FIG. 7 , the tool 8 can lift the entire fixed structure 2 through the plastic body 210 of the plastic stopper 21 to place it on the object 1 for welding, and then the tool 8 can leave the plastic stopper 21.

As described above, the plastic stopper 21 of this embodiment can be combined with the insertion portion 23 to serve as a fixing structure 2 for the tool 8 to be extracted to the welding position.

The present invention has been disclosed in the above text with a preferred embodiment, but those familiar with the present technology should understand that the embodiment is only used to describe the present invention and should not be interpreted as limiting the scope of the present invention. It should be noted that all changes and substitutions equivalent to the embodiment should be included in the scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined by the patent application.

2: Fixed structure

20: Body

21: Plastic stopper

210: Plastic body

22: Assembly hole

23: Insertion section

230: Entrance

24: Assembly and connection part

240: Screw structure

241: Screw thread

25: Interference structure

250: Filling part

251: Interference Department

Claims (7)

A plastic stopper is applied to a fixed structure, the fixed structure includes a body, the body has a joint, the joint includes an insertion part and a joint part, the joint part is connected to the insertion part, the joint part includes a column structure, the plastic stopper includes: a plastic body, suitable for being squeezed into the insertion part and the joint part, to form an interference force to prevent or prevent falling off from the joint. The plastic stopper as described in claim 1, wherein the material of the plastic body is a heat-resistant material or metal material including Teflon, nylon, silicone, rubber or plastic, and is used to implement the welding heating process or surface mounting welding heating process without falling off, melting or deformation. As described in claim 1, the plastic stopper, wherein the body is used to be assembled to an object, the object includes a setting portion corresponding to the body, the setting portion and the body respectively have a solderable surface and a corresponding solderable surface, and a solder layer is provided on the solderable surface or the corresponding solderable surface, so that the solder layer is liquefied into liquid solder by heating, and the liquid solder is solidified to weld the body to the object, and the plastic stopper is suitable for preventing the liquid solder from flowing into the assembly portion during the welding process. The plastic stopper as described in claim 1, wherein the plastic body is a sheet, a washer, an elastic body, an R-angle body, a C-angle body, a right-angle body, an arc-angle body, a concave body, a convex body, a layered body, a bevel body, a knurled body, a round body, a buckle body, a sphere, a curved body, a buckle body, a block body, a hollow body, a cylinder or a threaded body. A plastic stopper as described in claim 1, wherein the body is used to be assembled to an object, the object is a printed circuit board, or the object is a printed circuit board provided with a solderable layer, or the object is a printed circuit board provided with a solderable layer and a solder layer is provided on the solderable layer. A plastic stopper is applied to a fixed structure. The fixed structure includes a body, the body has a joint, the joint includes an insertion part and a joint part, the joint part is connected to the insertion part, the joint part is a buckle body with a recess, the plastic stopper includes: a plastic body, suitable for being inserted into the insertion part and buckled into the joint part to form an interference structure to prevent or prevent falling off from the joint. A plastic stopper is applied to a fixed structure, the fixed structure includes a body, the body has a joint, the joint includes an insertion part and a joint part, the joint part is connected to the insertion part, the joint part includes a screw thread structure, the plastic stopper includes: a plastic body, suitable for being inserted into the insertion part and buckled into the joint part to form an interference structure to prevent or prevent falling off from the joint hole or joint.

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