JP4086560B2 - Screw temporary fixing structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a temporary fixing structure for a screw.
[0002]
[Prior art]
Conventionally, for example, when a part used for a vehicle is assembled to a vehicle body, a tightening operation is performed by setting a screw in a screw hole at the time of assembly.
[0003]
[Problems to be solved by the invention]
In this case, it is necessary for the operator to pick up the screws one by one and set them in a straight state in the screw holes and tighten them, and there is a problem that the assembly is very troublesome especially for a part having a large number of screws. . Also, if a screw falls during assembly on an automobile assembly line, etc., it takes time to search for the screw, which hinders assembly within a limited time. If it is left behind, abnormal noise will be generated due to vibration during running.
[0004]
[Means for Solving the Problems]
Therefore, in order to solve the above problem, the temporary fixing structure of the screw according to the present invention is formed with a through hole into which the screw is inserted into the fixed body to which the screw is temporarily fixed, and the through hole is formed on the surface side of the fixed body. Provided with at least two opposing urging arm portions that are inclined and projecting around the through hole of the fixed body for urging the screw head of the screw inserted into the screw in the direction in which the screw is removed. together with the the back surface side of the fixed body to restrict movement of the screw into engagement with the omission direction the threads of the screw that is inserted into the through hole, the through hole of the object to be fixed body When provided with at least two opposing regulation claws projecting obliquely around the periphery, the screw is tightened into a screw hole of the fixed body in order to fix the fixed body to the fixed body, The urging arm portion and the restricting claw portion are bent so that the inside of the fixed body is bent. Further provided so as to be respectively accommodated arm housing portion and the claw receiving portion to the object to be fixed body, provisionally fixing the screw which is inserted into the through hole and the urging portion by said regulating portion in the fixation member When the screw is tightened into the screw hole of the fixed body in order to fix the fixed body to the fixed body, the restricting claw portion is bent before the urging arm portion and the claw storage is performed. The strength of the restricting claw portion is made weaker than the strength of the urging arm portion so as to be housed in the portion .
[0005]
According to the temporary fixing structure of the screw according to the present invention, the screw is temporarily attached to the fixed body in a state where the movement of the screw in the screw removal direction is restricted by the restriction portion and the biasing portion is biased in the screw removal direction. Because it is fixed, the screw will not rattle and fall off. As a result, if all the screws are temporarily fixed to the fixed body in advance, the operator does not need to set the screws in the screw holes each time when fixing the fixed body, and wrong screws may be mistakenly installed. There is no worry about using it. Thereby, assembly work can be performed quickly and reliably.
[0006]
In addition, when the screw is tightened, the urging arm portion and the restricting claw portion are accommodated inside the fixed body, so that the urging arm portion is sandwiched between the screw head and the fixed body or the restricting claw portion is covered. The fixed body can be securely fixed to the fixed body without being caught between the fixed body and the fixed body.
Furthermore, before the main fixing is completed, the restriction claw portion is bent before the urging arm portion and is stored in the fixed body, so that the restriction claw portion is sandwiched between the fixed body and the fixed body. There is no trouble in fixing the object to be fixed.
[0007]
In the temporary fixing structure of the screw according to the present invention, the two restricting claw portions have different protrusion heights from the fixed body so that the tips of the two restricting claw portions are respectively engaged with the screw threads at positions shifted by a predetermined pitch. There may be.
In this way, the two restricting claw portions are respectively engaged with the screw threads at positions shifted by a predetermined pitch, so that the screws can be temporarily fixed substantially perpendicular to the fixed body. Inadequate screw tightening can be reduced.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a perspective view of a temporary screw fixing structure 10 according to an embodiment of the present invention, and FIG. 2 is a plan view and a side view of the temporary screw fixing structure 10. The screw temporary fixing structure 10 is provided as at least one part as a part of a part made of, for example, a synthetic resin, which is a fixed body 1 to be fixed to the vehicle body. 1 and 2 are shown as rectangular plates with the periphery of the screw temporary fixing structure 10 cut out, there are various actual shapes of the fixed body 1.
[0009]
The temporary screw fixing structure 10 has a through hole 12 which is a screw insertion hole formed in the fixed body 1. On both sides of the through hole 12, two arm storage portions 14 each formed of a rectangular through hole are formed. Two opposing urging arm portions 16 in the form of tongues are provided on the respective edge portions of the two arm storage portions 14 so as to incline toward the surface side of the fixed body 1. These two urging arm portions 16 are located around the through hole 12. In addition, the arm accommodating part 14 does not necessarily need to be a through hole, and may be formed as a recessed part. Moreover, the urging | biasing arm part 16 is not limited to two, Three or more may be sufficient.
[0010]
In addition, the fixed body 1 has rectangular through holes communicating with both sides of the through hole 12 at positions shifted by 90 ° from the positions where the urging arm portion 16 and the arm storage portion 14 are formed with respect to the through hole 12. Two opposing nail storage portions 18 are formed. At each edge portion of the two claw storage portions 18, two tongue-shaped opposing regulation claw portions 20 are provided so as to protrude toward the back side of the fixed body 1. These two restricting claws 20 are located around the through hole 12. In addition, the nail | claw accommodating part 18 may be formed as a mere recessed part instead of a through-hole. Further, the restriction claw portions 20 are not limited to two, and may be three or more.
[0011]
As shown in FIG. 2, the two restricting claw portions 20 have different projecting heights (a, b) from the fixed body 1. Thereby, when a screw is inserted into the through hole 12, each tip of the two restricting claws 20 is engaged with the screw thread at a position shifted by a half pitch (or an integral multiple pitch + half pitch) with respect to the screw. It has become. If, for example, three restriction claws 20 are provided equally in the circumferential direction, the restriction claws are engaged so that each tip engages with the thread at a position shifted by 1/3 pitch with respect to the screw. What is necessary is just to make the protrusion height of the part 20 different.
[0012]
Further, the restricting claw portion 20 is formed, for example, relatively thin and narrow in width so that the strength thereof is weaker than the strength of the urging arm portion 16.
[0013]
Next, a procedure for fixing the fixed body 1 having the screw temporary fixing structure 10 configured as described above will be described with reference to FIGS.
First, as shown in FIG. 3, the screw 30 is inserted into the through hole 12 of the fixed body 1 and temporarily fixed. When the screws 30 are inserted into the through holes 12, the tips of the two urging arm portions 16 come into contact with the screw heads, but the screws are pushed in by hand until the urging arm portions 16 are slightly bent downward. Thereby, the screw 30 is urged in the removal direction (upward) by the elastic force of each urging arm portion 16. On the other hand, when the screw 30 is inserted into the through hole 12, the two restricting claw portions 20 engage with the screw threads at positions shifted by a half pitch. By this engagement, the screw 30 is restricted from moving in the removal direction. As described above, the screw 30 is urged in the removal direction by the urging arm portion 16, but the movement in the removal direction is restricted by the restriction claw portion 20, so that the screw 30 does not rattle with respect to the fixed body 1. It is firmly fixed temporarily. Further, by engaging the two restricting claw portions 20 with the screw threads at positions shifted by a half pitch, the screw 30 can be temporarily fixed substantially perpendicular to the fixed body 1, and as a result, It is possible to reduce screw tightening defects with respect to the screw holes of the fixed body.
[0014]
Subsequently, as shown in FIG. 4, the fixed body 1 to which the screw 30 is temporarily fixed is fixed to the fixed body 2. For this purpose, the fixed body 1 is placed on the fixed body 2 and the screw 30 is tightened into the screw hole 3 of the fixed body 2. At the beginning of tightening, as shown in the right diagram of FIG. 4A, the strength of the restricting claw portion 20 is weaker than that of the biasing arm portion 16, so that the restricting claw portion 20 is more than the biasing arm portion 16. Begin to bend from the root first. The regulating claw portion 20, threads the leading end is engaged Yuki bent in the so that Re et pushed up by rotating, it is accommodated in the pawl accommodating portions 18. When the restriction claw portion 20 is stored in the claw storage portion 18, it is not an obstacle interposed between the fixed body 1 and the fixed body 2, so that the fixed body 1 can contact the solid body 2 without a gap. become.
[0015]
When the screw 30 is further tightened, as shown in FIG. 4B, the biasing arm portion 16 starts to bend from the root, and when it is tightened to the end, the arm housing portion 14 is completely stored. At this time, since the screw 30 is urged in the pulling direction by the restoring elastic force of the urging arm portion 16, there is an effect that the screw 30 is hardly loosened. In this way, the fixed body 1 is fixed to the solid body 2.
[0016]
As described above, according to the temporary screw fixing structure 10 of the present embodiment, the movement of the screw 30 in the removal direction is restricted by the restriction claw portion 20 and the biasing arm portion 16 attaches the screw 30 in the removal direction. Since the screw 30 is temporarily fixed to the fixed body 1 in the biased state, the screw does not rattle and fall off. As a result, if all the screws are temporarily fixed to the fixed body 1 in advance, the operator does not need to set the screws in the screw holes every time when the fixed body 1 is assembled. There is no worry of using different screws. Thereby, assembly work can be performed quickly and reliably.
[0017]
Further, since the urging arm portion 16 and the restricting claw portion 20 are housed inside the fixed body 1 when the screw is tightened, the urging arm portion 16 is sandwiched between the screw head and the fixed body 1 or the restricting claw portion. The fixed body 1 can be reliably fixed to the fixed body 2 without being sandwiched between the fixed body 1 and the fixed body 2.
[0018]
Further, before the main fixing is completed, the restricting claw portion 20 is bent before the urging arm portion 16 and stored in the fixed body 1, so that the restriction between the fixed body 1 and the fixed body 2 is restricted. The nail | claw part 20 will not be pinched and it will not interfere with fixation of the to-be-fixed body 1. FIG.
[0019]
By the way, as shown in FIG. 5, if the insertion side opening edge 3 a of the screw hole 3 of the fixed body 2 is tapered so that the screw groove start position coincides with the tip end position of the screw 30, When the temporarily fixed body 1 is disposed on the fixed body 2, the tapered portion 3 a escapes from the restricting claw portion 20, so that the fixed body 1 is in contact with the fixed body 2 without a gap before the screw is tightened. The screw 30 can be stably disposed, and the screw 30 can be tightened only by the distance between the screw head and the fixed body 1 (that is, the protruding height of the urging arm 16 from the fixed body 1). Tightening work is easy and quick.
[0020]
【The invention's effect】
As is clear from the above description, according to the temporary fixing structure of the screw of the present invention, if all the screws are temporarily fixed to the fixed body in advance, the operator can attach the screws when assembling the fixed body. There is no need to set it in the screw hole every time, and there is no worry of using a wrong screw by mistake. Thereby, assembly work can be performed quickly and reliably.
[Brief description of the drawings]
FIG. 1 is a perspective view of a temporary fixing structure of a screw.
FIG. 2 is a plan view and a side view of a screw temporary fixing structure.
FIG. 3 is a view showing a state when a screw is temporarily fixed to a fixed body.
FIG. 4 is a diagram showing a state when a fixed body to which a screw is temporarily fixed is fixed to the fixed body.
FIG. 5 is a view showing a modification in which the edge of the screw hole of the fixed body is tapered.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Fixed body, 2 ... Fixed body, 3 ... Screw hole, 10 ... Temporary fixing structure of screw, 12 ... Through-hole, 14 ... Arm accommodating part, 16 ... Energizing arm part, 18 ... Nail accommodating part, 20 ... Restriction claw part, 30 ... screw.

Claims (2)

A through-hole for inserting a screw is formed in a fixed body for temporarily fixing the screw, and a screw head of the screw inserted into the through-hole is urged on the surface side of the fixed body in the screw removal direction. And providing at least two opposing urging arm portions projecting inclined around the through hole of the fixed body, and the back surface of the fixed body is inserted into the through hole. Provided with at least two opposing restricting claws projecting obliquely around the through hole of the fixed body for restricting the movement of the screw in the removal direction by engaging with a screw thread. When the screw is tightened into the screw hole of the fixed body in order to fix the fixed body to the fixed body, the urging arm portion and the restricting claw portion are bent to be inside the fixed body. The arm storage part and the nail storage part are attached to the fixed body so as to be stored respectively. It provided al, the screw for the said screw which is inserted into the through hole and temporarily fixed said to the fixed element and the urging portion by the said regulating portion, to fix the the fixed element with respect to the fixed member When tightened into the screw hole of the fixed body, the biasing arm is provided with a strength of the restricting claw so that the restricting claw bends and is accommodated in the claw storage before the biasing arm. A screw temporary fixing structure characterized by being weaker than the strength of the part . Claim 1 is pre SL two regulating claw portion, characterized in that the respective tip are the at different protrusion heights from the fixed element so as to respectively engage the threads at the position shifted by a predetermined pitch The temporary fixing structure of the screw described in 1.

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