JP3131207U - Screw fixture - Google Patents

Screw fixture Download PDF

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JP3131207U
JP3131207U JP2007000753U JP2007000753U JP3131207U JP 3131207 U JP3131207 U JP 3131207U JP 2007000753 U JP2007000753 U JP 2007000753U JP 2007000753 U JP2007000753 U JP 2007000753U JP 3131207 U JP3131207 U JP 3131207U
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screw
cylindrical portion
body frame
main body
flange portion
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義洋 三浦
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株式会社オチアイ
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Priority to PCT/JP2007/063399 priority patent/WO2008007593A1/en
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Abstract

【課題】ねじ溝の形成を含む一連の製造工程を全てプレス処理で行うことで、ねじ切り忘れを防止し、確実にねじ切り加工がされている製品が得られるとともに、フレーム本体と回路基板との位置決めが容易なねじ固定具を提供する。
【解決手段】平板(本体フレーム50)に形成された穴51にかしめ処理45して前記平板(本体フレーム50)に対して固定可能なフランジ部13と、該フランジ部13に連続し内部に空間部15を存在させた円筒部10とを具備するねじ固定具1であって、回路基板60の孔62に嵌合可能な小径円筒部19を形成することで、本体フレーム50と回路基板60との位置合わせを容易にするねじ固定具の構造について、一連の製造工程を全てプレス処理で行うことを可能とする。
【選択図】図1
A series of manufacturing processes including the formation of thread grooves are all performed by press processing, thereby preventing forgetting of threading and providing a product that is securely threaded and positioning the frame body and circuit board. Provides an easy screw fixture.
A flange portion 13 that can be fixed to the flat plate (main body frame 50) by caulking processing 45 in a hole 51 formed in the flat plate (main body frame 50), and a space inside the flange portion 13 that is continuous with the flange portion 13. The screw fixing device 1 having the cylindrical portion 10 in which the portion 15 is present, and the small-diameter cylindrical portion 19 that can be fitted into the hole 62 of the circuit board 60 is formed. With respect to the structure of the screw fixture that facilitates the alignment of the above, it is possible to perform a series of manufacturing processes all by pressing.
[Selection] Figure 1

Description

本考案は、例えば液晶テレビの本体フレームにねじを用いて回路基板を装着するに際して、本体フレーム側に対してねじを固定するためのねじ固定具に関し、特に、本体フレームに対する回路基板の位置決めを行うのに適した構造を有するものである。   The present invention relates to a screw fixing tool for fixing a screw to a main body frame side, for example, when a circuit board is mounted on a main body frame of a liquid crystal television, for example, and in particular, the circuit board is positioned with respect to the main body frame. It has a structure suitable for.

従来、例えば液晶テレビの本体フレームに対しては、固定具及びねじを用いて回路基板を装着することが行われていた。
固定具40は、図8に示すように、円柱部41の中央に上面よりねじ溝42が螺旋状に切られ、下端に円柱部41より大径のフランジ部43が形成されている。
Conventionally, for example, a circuit board is mounted on a main body frame of a liquid crystal television using a fixing tool and a screw.
As shown in FIG. 8, the fixing tool 40 has a screw groove 42 spirally cut from the upper surface at the center of the cylindrical portion 41, and a flange portion 43 having a larger diameter than the cylindrical portion 41 at the lower end.

そして、図9に示すように、本体フレーム50に形成された複数の穴51に固定具40のフランジ部43をかしめ処理45することで、本体フレーム50に対して固定具40を固定し一体化させた後、固定具40の上面側に回路基板60を配置し、回路基板60の孔61及び固定具40のねじ溝42にねじ70を挿入することで、回路基板60を本体フレーム50に対して固定することが行われていた。   Then, as shown in FIG. 9, the fixing device 40 is fixed and integrated with the main body frame 50 by caulking 45 the flange portions 43 of the fixing device 40 to the plurality of holes 51 formed in the main body frame 50. Then, the circuit board 60 is disposed on the upper surface side of the fixture 40 and the screw 70 is inserted into the hole 61 of the circuit board 60 and the screw groove 42 of the fixture 40, so that the circuit board 60 is attached to the main body frame 50. And was fixed.

上記した固定具40は、各円柱部41にそれぞれねじ溝42を手作業や2次加工によるねじ切り作業が必要であるため、製造に手間がかかるという一面があった。また、大量の固定具40に対して一つずつねじ溝42のねじ切り処理を必要とするため、固定具数個について、処理ミス(ねじ切り忘れ)によりねじ溝42の切り込みが施されない事態が生じる場合があった。
そして、本体フレーム50に固定具40をかしめ処理45をした段階で、固定具40の一つにねじ溝42が切り込まれていなかったような場合、回路基板60を装着することができず一体化された本体フレーム50ごと不良品扱いになるという不都合があった。
The fixture 40 described above has a problem in that it takes time and labor to manufacture because each cylindrical portion 41 needs to be threaded by a manual operation or a secondary processing. Further, since it is necessary to thread the thread grooves 42 one by one with respect to a large number of fixtures 40, a situation occurs in which the thread grooves 42 are not cut due to a processing error (forgetting to cut the threads) for several fixtures. was there.
When the fixing tool 40 is caulked 45 to the main body frame 50 and the screw groove 42 is not cut into one of the fixing tools 40, the circuit board 60 cannot be mounted and integrated. There is a problem in that the main body frame 50 is treated as a defective product.

また、ねじを固定するための固定具については、下記特許文献に示されるように各種提案されているが、本体フレーム50に対して回路基板60を固定するに適した構造は存在しなかった。
特開平10−285720 特開平09−137816
Various fixing devices for fixing the screw have been proposed as shown in the following patent document, but there is no structure suitable for fixing the circuit board 60 to the main body frame 50.
JP-A-10-285720 JP 09-137816

更に、図9を参照して説明したように、ねじ固定具40は本体フレーム50に回路基板60を固定するためのものであるが、本体フレーム50にねじ固定具40をかしめた後、回路基板60の孔61とねじ固定具40のねじ溝42との位置合わせを行ってからねじ70を挿入して固定する必要があり、ねじ70の挿入に際しての作業効率が悪いという問題点があった。   Furthermore, as described with reference to FIG. 9, the screw fixing tool 40 is for fixing the circuit board 60 to the main body frame 50. After the screw fixing tool 40 is caulked to the main body frame 50, the circuit board is used. It is necessary to insert and fix the screw 70 after positioning the hole 61 of the screw 60 and the screw groove 42 of the screw fixture 40, and there is a problem that the working efficiency at the time of inserting the screw 70 is poor.

本考案は上記実情に鑑みてなされたもので、ねじ固定具においてねじ溝の形成を含む一連の製造工程を全てプレス処理で行うことで、ねじ切り忘れを防止し、確実にねじ切り加工がされている製品が得られるとともに、本体フレームと回路基板との位置合わせが容易となる形状を有するねじ固定具の構造を提供することを目的としている。   The present invention has been made in view of the above circumstances, and by performing a series of manufacturing processes including the formation of screw grooves in a screw fixture by a press process, forgetting of thread cutting is prevented and threading is reliably performed. An object of the present invention is to provide a structure of a screw fixture having a shape that allows a product to be obtained and facilitates alignment between a main body frame and a circuit board.

上記目的を達成するため本考案(請求項1)は、平板(本体フレーム50)に形成された穴51にかしめ処理45して前記平板(本体フレーム50)に対して固定可能なフランジ部13と、該フランジ部13に連続し内部に空間部15を存在させた円筒部10とを具備するねじ固定具1であって、次の構成を含むことを特徴としている。
前記円筒部10の反フランジ部側に円筒部10より直径が小さい小径円筒部19を設けることで段差18を形成する。
前記小径円筒部19を塞ぐ頂面11に、プレス加工処理により段差吸収孔21を備えた一口のねじ溝20を形成する。
In order to achieve the above object, the present invention (Claim 1) includes a flange portion 13 that can be fixed to the flat plate (main body frame 50) by caulking 45 in a hole 51 formed in the flat plate (main body frame 50). The screw fixture 1 includes a cylindrical portion 10 that is continuous to the flange portion 13 and has a space portion 15 in the inside thereof, and includes the following configuration.
A step 18 is formed by providing a small-diameter cylindrical portion 19 having a diameter smaller than that of the cylindrical portion 10 on the side opposite to the flange portion of the cylindrical portion 10.
A single screw groove 20 having a step absorption hole 21 is formed on the top surface 11 that closes the small-diameter cylindrical portion 19 by press working.

請求項2は、電器製品等に内在される平板状の本体フレーム50に対して複数のねじ固定具をそれぞれかしめ処理で固定し、前記各ねじ固定具に対してねじ70を介して回路基板60等を固定する場合の円筒状の位置決め用のねじ固定具であって、次の構成を含むことを特徴としている。
本体フレーム50に形成された穴51にかしめ処理されることで前記本体フレーム50に対して固定可能なフランジ部13を設ける。
該フランジ部13に連続し内部に空間15を存在させた円筒部10を設ける。
前記円筒部10の反フランジ部側に、円筒部10より直径が小さくなる段差18を設けて前記回路基板60に設けた孔62に嵌合するよう形成した小径円筒部19を設ける。
前記小径円筒部19を塞ぐ頂面11に、プレス加工処理により形成された段差吸収孔21を備えた一口のねじ溝20を設ける。
According to a second aspect of the present invention, a plurality of screw fixtures are respectively fixed to a flat body frame 50 contained in an electrical appliance or the like by caulking, and the circuit board 60 is connected to each screw fixture via a screw 70. This is a cylindrical positioning screw fixing tool for fixing the like, and includes the following configuration.
A flange portion 13 that can be fixed to the main body frame 50 by being caulked in a hole 51 formed in the main body frame 50 is provided.
A cylindrical portion 10 that is continuous with the flange portion 13 and has a space 15 therein is provided.
On the side opposite to the flange portion of the cylindrical portion 10, a step 18 having a diameter smaller than that of the cylindrical portion 10 is provided, and a small-diameter cylindrical portion 19 formed so as to fit into a hole 62 provided in the circuit board 60 is provided.
A single screw groove 20 having a step absorption hole 21 formed by pressing is provided on the top surface 11 that closes the small diameter cylindrical portion 19.

請求項3は、請求項2のねじ固定具において、円筒部10のフランジ部側端に、プレス加工で形成される溝部14を設けたことを特徴としている。   According to a third aspect of the present invention, in the screw fixture of the second aspect, a groove portion 14 formed by pressing is provided at the flange side end of the cylindrical portion 10.

請求項4は、請求項3のねじ固定具において、前記溝部14を複数個形成し、各溝部がそれぞれ対向する位置に配置されたことを特徴としている。   According to a fourth aspect of the present invention, in the screw fixture of the third aspect, a plurality of the groove portions 14 are formed, and the groove portions are arranged at positions facing each other.

本考案のねじ固定具1によれば、ねじ70が螺着するねじ溝20をプレス加工処理による段差吸収孔21を備えた一口のねじ溝20で形成し、円筒部10のフランジ部側端の複数の溝部14をプレス加工処理により形成するので、一連の製造工程を全てプレス処理で行うことができ、ねじ溝20が確実に形成されるとともに、回路基板60の孔62に嵌合可能な小径円筒部19の存在により本体フレーム50と回路基板60との位置合わせが容易となる位置決め用のねじ固定具1の構造とすることができる。   According to the screw fixture 1 of the present invention, the screw groove 20 into which the screw 70 is screwed is formed by the single screw groove 20 provided with the step absorption hole 21 by press working, and the flange portion side end of the cylindrical portion 10 is formed. Since the plurality of groove portions 14 are formed by press processing, the entire manufacturing process can be performed by press processing, and the screw grooves 20 can be reliably formed and can be fitted into the holes 62 of the circuit board 60 with a small diameter. Due to the presence of the cylindrical portion 19, the positioning screw fixing device 1 can be structured such that the positioning of the main body frame 50 and the circuit board 60 is easy.

考案の実施するための最良の形態Best mode for carrying out the invention

本考案の実施の形態の一例について、図面を参照しながら説明する。
本考案によるねじ固定具1は、図1に示されるように、一方側が開口し、他方側に円筒部10を有して形成されている。円筒部10の開口側下端には、円筒部10の外側周囲に突出するフランジ部13が形成されている。フランジ部13の周囲面は、山状13aと谷状13bから成る凹凸が連続形成されている。これはフランジ部13が平面板の穴にかしめ処理される際に、穴の内壁部を凹凸により変形し易くするためであり、また、ねじ締め時の供回りの防止(回転防止)を図るためである。
An example of an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the screw fixture 1 according to the present invention is formed with one side opened and a cylindrical portion 10 on the other side. A flange portion 13 that protrudes to the outer periphery of the cylindrical portion 10 is formed at the opening-side lower end of the cylindrical portion 10. On the peripheral surface of the flange portion 13, irregularities including a mountain shape 13 a and a valley shape 13 b are continuously formed. This is to facilitate deformation of the inner wall portion of the hole due to the unevenness when the flange portion 13 is caulked to the hole of the flat plate, and to prevent rotation during rotation (prevention of rotation). It is.

また、フランジ部13の直径は、かしめ処理を行うため、ねじ固定具1が装着される本体フレームの穴の径より若干大きな径となっている。本体フレームにねじ固定具1がかしめ処理により装着された状態については後述する。   Further, the diameter of the flange portion 13 is slightly larger than the diameter of the hole of the main body frame to which the screw fixture 1 is mounted in order to perform the caulking process. The state in which the screw fixture 1 is attached to the main body frame by the caulking process will be described later.

そして、円筒部10の反フランジ部側の先端には、段差18を設けて円筒部10より直径が小さい小径円筒部19がプレス加工により形成されている。小径円筒部19は、頂面11によって塞がれるように構成されている。この小径円筒部19は、後述するように、本体フレームに対する回路基板の位置決めを容易にするために形成されたものである。   A small diameter cylindrical portion 19 having a step 18 and a diameter smaller than that of the cylindrical portion 10 is formed by pressing at the tip of the cylindrical portion 10 on the side opposite to the flange portion. The small diameter cylindrical portion 19 is configured to be blocked by the top surface 11. As will be described later, the small-diameter cylindrical portion 19 is formed to facilitate positioning of the circuit board with respect to the main body frame.

小径円筒部19の頂面11には、プレス加工処理により一口のねじ溝20が形成されている。このねじ溝20は、図1(a)(c)に示すように、穿孔された穴(後述する図3のひょうたん型に似た穴34)に対して、この部分に装着されるねじのねじ山一つ分に嵌合する形状にプレス加工処理で変形することにより形成するものである。孔(ねじ溝20)には段差吸収孔21を設けることで、この部分の存在によりねじ溝20に段差が形成できるように構成されている。
すなわち、ねじ溝20は、段差吸収孔21を隔てて一山に対応する段差を有するとともに、ねじ山の一山に対応する螺旋形状を有して構成されている。
A single screw groove 20 is formed on the top surface 11 of the small-diameter cylindrical portion 19 by press working. As shown in FIGS. 1 (a) and 1 (c), the thread groove 20 is a screw thread to be attached to this portion with respect to a perforated hole (a hole 34 similar to a gourd shape in FIG. 3 described later). It is formed by deforming by press working into a shape that fits into one mountain. By providing a step absorption hole 21 in the hole (screw groove 20), a step can be formed in the screw groove 20 due to the presence of this portion.
That is, the screw groove 20 has a step corresponding to one mountain with the step absorption hole 21 interposed therebetween, and has a spiral shape corresponding to one screw thread.

円筒部10のフランジ部13側端に、プレス加工処理により4個の溝部14が形成されている。各溝部14は、円筒部10における互いに対向する位置に等間隔に形成され、それぞれが弓状の凹部を構成している。この溝部14は、後述するかしめ処理において、ねじ固定具1が被固定部材から抜け難くするためのものである。
また、円筒部10の内部には、ねじの先端部分が収納可能な空間部15が形成されている。円筒部10の長さは、ねじ固定具1に固定されるねじの長さや設計上必要な高さに応じて設定される。
Four groove portions 14 are formed at the flange portion 13 side end of the cylindrical portion 10 by press working. Each groove part 14 is formed in the cylindrical part 10 in the position which mutually opposes at equal intervals, and each comprises the arch-shaped recessed part. This groove portion 14 is used to make it difficult for the screw fixture 1 to come off from the member to be fixed in the caulking process described later.
In addition, a space portion 15 in which the tip portion of the screw can be stored is formed inside the cylindrical portion 10. The length of the cylindrical portion 10 is set according to the length of the screw fixed to the screw fixture 1 and the height required for design.

図2は、ねじ固定具1の実施例を示すものである。この例では、図1のねじ固定具1と異なり、円筒部10の大部分が凹状となる二個の溝部14が形成されている。すなわち、溝部14は、円筒部10の表面において、二個の表面部10a以外の部分に凹部を構成して形成されている。
また、各例では溝部を複数個形成するようにしたが、円筒部の全周に亘って凹部となるようにプレス加工で形成されるものであってもよい。
図2のねじ固定具の他の部分については、図1のねじ固定具と同じ構成であるので、同一符号を付して説明を省略する。
FIG. 2 shows an embodiment of the screw fixture 1. In this example, unlike the screw fixture 1 of FIG. 1, two groove portions 14 are formed in which most of the cylindrical portion 10 is concave. That is, the groove portion 14 is formed by forming a recess in a portion other than the two surface portions 10 a on the surface of the cylindrical portion 10.
In each example, a plurality of groove portions are formed. However, the groove portions may be formed by pressing so as to form a recess over the entire circumference of the cylindrical portion.
The other parts of the screw fixture of FIG. 2 have the same configuration as the screw fixture of FIG.

次に、上記構造のねじ固定具1の製造方法について、図3を参照しながら説明する。
ねじ固定具1は、帯状板30を流れ作業で複数回プレス加工することで、一端にフランジ部13を有し、他端にねじ溝20を有する円筒体とすることで形成される。
図3に示す一連の工程は、金属片から構成される帯状板30の上下に配置された各プレ−ト(図示せず)を同期させて帯状板30に対して近接・離隔するようにし、各プレ−トによって帯状板30をクランプした状態において各工程を同時に実施し、工程終了後各プレ−トを離隔させ、帯状板30を所定の距離だけ図面右方向へ移動させ、各加工部分を次の工程へ順次移動させて行われる。
Next, a manufacturing method of the screw fixture 1 having the above structure will be described with reference to FIG.
The screw fixture 1 is formed by pressing the belt-like plate 30 a plurality of times in a flow operation to form a cylindrical body having the flange portion 13 at one end and the thread groove 20 at the other end.
The series of steps shown in FIG. 3 synchronizes the plates (not shown) arranged above and below the belt-like plate 30 made of metal pieces so as to approach and separate from the belt-like plate 30. Each step is simultaneously performed in a state where the belt-like plate 30 is clamped by each plate, and after completion of the steps, each plate is separated, and the belt-like plate 30 is moved rightward in the drawing by a predetermined distance, and each processed portion is moved. This is performed by sequentially moving to the next step.

先ず、帯状板30に対して、図3(a)〜(d)における複数回のプレス加工(順送金型加工)により、一端が開口し他端に頂面を有する円筒体31,32,33を順次成型し、最終的には頂面11を有する小径円筒部19により段差18が形成された円筒部10が成型されるようにプレス処理が施される(本体形成工程)。この処理は、1回のプレス処理で所望の円筒体を得ることができないため、複数回のプレス加工を順次流れ作業的に行うことで、所望形状の小径円筒部19及び円筒部10を有する段差18付き円筒体を形成することが可能となる(図3(d))。   First, cylindrical bodies 31, 32, and 33 having one end opened and a top surface at the other end by a plurality of press workings (sequential die processing) in FIGS. Are sequentially molded, and finally, a press process is performed so that the cylindrical portion 10 in which the step 18 is formed by the small diameter cylindrical portion 19 having the top surface 11 is molded (main body forming step). In this process, a desired cylindrical body cannot be obtained by a single press process. Therefore, a step having a small-diameter cylindrical part 19 and a cylindrical part 10 having a desired shape is performed by sequentially performing a plurality of press processes in a flow manner. A cylindrical body with 18 can be formed (FIG. 3D).

次に、成型された円筒体の頂面11に、穴開けパンチ(図示せず)によって打ち抜くプレス加工により、ひょうたん型に似た穴34を穿孔する(孔形成工程)(図3(e))。
続いて、ひょうたん型に似た穴34を含む頂面11に対してプレス加工を行うことにより、ひょうたん型に似た穴34を変形させ、ねじ溝20及び段差吸収孔21を形成することで一口ねじ溝を構成する(ねじ溝加工工程)(図3(f))。
Next, a hole 34 that resembles a gourd mold is punched in the top surface 11 of the molded cylindrical body by punching with a punch (not shown) (hole forming step) (FIG. 3 (e)). .
Subsequently, by pressing the top surface 11 including the hole 34 similar to the gourd mold, the hole 34 similar to the gourd mold is deformed, and the screw groove 20 and the step absorption hole 21 are formed. A thread groove is formed (thread groove processing step) (FIG. 3F).

次に、円筒体の基部(帯状板30側)に、プレス加工処理によりそれぞれ対向するように配置された二対(四個)の溝部14を形成する(図3(g))。この溝部14の加工は、通常の垂直方向(上型・下型)によるプレス加工ではなく、下型にカム機構を水平方向に組み込んで、水平方向からプレス加工することで行う。
水平方向からのプレス加工方法としては、例えば、組み込むカム機構を二対に分けて構成し、一対目のカムで垂直方向の上下を溝加工し、次工程の二対目のカムで水平方向の左右を溝加工する順次加工する方法や、一回で四方向のプレス加工を全て行う方法が考えられる。
そして、円筒体の周囲にフランジ部13の外周となる凹凸が繰り返される切り込み溝をプレス加工により形成する(図3(h))。
Next, two pairs (four pieces) of groove portions 14 are formed on the base of the cylindrical body (on the side of the belt-like plate 30) so as to face each other by pressing (FIG. 3G). The processing of the groove portion 14 is not performed by pressing in the normal vertical direction (upper die / lower die), but is performed by incorporating a cam mechanism in the lower die in the horizontal direction and pressing from the horizontal direction.
As a pressing method from the horizontal direction, for example, the cam mechanism to be incorporated is divided into two pairs, the vertical upper and lower grooves are grooved by the first cam, and the horizontal cam is formed by the second cam of the next process. A method of sequentially processing the grooves on the left and right sides, and a method of performing all four-direction press processes at one time are conceivable.
Then, a cut groove in which irregularities serving as the outer periphery of the flange portion 13 are repeated is formed by press working around the cylindrical body (FIG. 3 (h)).

最後に、穴開けパンチ(図示せず)によって打ち抜くことで、帯状板30からねじ溝20が形成された円筒体を切り落すことで、製品としてのねじ固定具1を得るものである(図3(i))。
上記した一連の製造工程は、ねじ溝20及び溝部14の形成を含む一連の製造工程を全てプレス処理(順送金型加工)で行われるので、ねじ切り忘れを防止し、確実にねじ切り加工がされている製品(プレス処理のみでねじ溝20が形成されたねじ固定具1)を得ることができる。
Finally, by punching with a punch (not shown), the cylindrical body in which the screw groove 20 is formed is cut off from the belt-like plate 30 to obtain the screw fixture 1 as a product (FIG. 3). (I)).
In the series of manufacturing processes described above, all of the series of manufacturing processes including the formation of the thread grooves 20 and the groove portions 14 are performed by press processing (progressive die processing). Product (screw fixture 1 in which the thread groove 20 is formed only by pressing) can be obtained.

続いて、上記した位置決め用のねじ固定具1の使用の仕方について、図4乃至図7を参照しながら説明する。
ねじ固定具1は、液晶テレビ等の本体フレーム50に回路基板60を装着するためのものであり、例えば回路基板60の四隅等に対応する複数個所に用いられる。
Next, how to use the positioning screw fixture 1 will be described with reference to FIGS.
The screw fixture 1 is for mounting the circuit board 60 on a main body frame 50 such as a liquid crystal television, and is used at a plurality of locations corresponding to the four corners of the circuit board 60, for example.

先ず、本体フレーム50に形成された複数の穴51に、それぞれねじ固定具1をその頂面11側から挿入する(図4(a))。ねじ固定具1のフランジ部13の直径は穴51より大きく形成されているので、フランジ部13が本体フレーム50の裏面に当接する。
この状態で、当て板100に配置されたねじ固定具1を本体フレーム50側から押し付けることで、フランジ部13が穴51へ押し込まれ、フランジ部13の周囲が本体フレーム50側に埋没される(図4(b)、図5(a))。この時、本体フレーム50の板の肉厚が溝部14に膨出55して入り込み、フランジ部13の下面が本体フレーム50の裏面と同一平面となるように、本体フレーム50に対してねじ固定具1がかしめ処理45により固定される(図4(c)、図5(b))。
First, the screw fixture 1 is inserted into the plurality of holes 51 formed in the main body frame 50 from the top surface 11 side (FIG. 4A). Since the diameter of the flange portion 13 of the screw fixture 1 is formed larger than the hole 51, the flange portion 13 abuts against the back surface of the main body frame 50.
In this state, by pressing the screw fixture 1 arranged on the contact plate 100 from the main body frame 50 side, the flange portion 13 is pushed into the hole 51 and the periphery of the flange portion 13 is buried in the main body frame 50 side ( FIG. 4B and FIG. 5A). At this time, the screw fixing tool is attached to the main body frame 50 such that the thickness of the plate of the main body frame 50 bulges 55 into the groove portion 14 and the lower surface of the flange portion 13 is flush with the back surface of the main body frame 50. 1 is fixed by the caulking process 45 (FIGS. 4C and 5B).

本体フレーム50に固定されたねじ固定具1上に回路基板60を設置し、ねじ70を装着する。この時、回路基板60の孔62に小径円筒部19が嵌合するように構成したため、回路基板60の孔をねじ固定具1の頂面11部分の位置に合わせてからねじ70を挿入する手間を省くことができる。   The circuit board 60 is installed on the screw fixture 1 fixed to the main body frame 50, and the screw 70 is attached. At this time, since the small-diameter cylindrical portion 19 is configured to be fitted into the hole 62 of the circuit board 60, it is troublesome to insert the screw 70 after aligning the hole of the circuit board 60 with the position of the top surface 11 portion of the screw fixture 1. Can be omitted.

ねじ70をねじ固定具1に装着するに際しては、ねじ70のねじ山は、ねじ固定具1のねじ溝20に嵌合し、ねじ70を螺進させることで嵌合箇所(一つの谷部)がねじ根元側に移動し、ねじ固定具1と回路基板60との間でねじ70が締結される(図4(d))。
ねじの嵌合箇所は、図4(d)に示すように、ねじ山の一つの谷部71がねじ溝20に位置し、谷部71に対して下側のねじ山頂上線がねじ溝20に沿って当接することで、ねじ固定具1に対してねじ70が固定される。
When the screw 70 is attached to the screw fixture 1, the screw thread of the screw 70 is fitted into the screw groove 20 of the screw fixture 1, and the screw 70 is screwed forward so as to be fitted (one valley portion). Moves to the screw root side, and the screw 70 is fastened between the screw fixture 1 and the circuit board 60 (FIG. 4D).
As shown in FIG. 4 (d), the screw fitting location is such that one trough portion 71 of the screw thread is located in the screw groove 20, and the screw thread top line below the trough portion 71 is in the screw groove 20. The screw 70 is fixed with respect to the screw fixture 1 by abutting along.

すなわち、本発明による位置決め用のねじ固定具1は、図6に示すように、本体フレーム50に対して回路基板60を固定する際に使用するものであるが、回路基板の周囲に配した複数の固定箇所X・Yの内、対角線上に位置する固定箇所Xについて、本発明の位置決め用のねじ固定具1Xを使用し(図4(d))、他の固定箇所Yについては、図7に示すように高さが低く小径円筒部の径がフランジ側まで連続する段差18のないタイプのねじ固定具1Yを使用する。回路基板60において、段差18のないねじ固定具1Yが装着される固定箇所Yにおいて穿孔される孔61は、固定箇所Xに穿孔される孔62より小径に形成されている。
対角線上の二箇所の固定箇所に位置決め用のねじ固定具1Xを使用すれば、ねじ固定具1の小径円筒部19が孔62に嵌合することで本体フレーム50に対して回路基板60の位置が容易に決定されるとともに、ねじ70を装着するに際してその回転動作により回路基板60が回転することを防止することができる。
That is, the positioning screw fixture 1 according to the present invention is used when the circuit board 60 is fixed to the main body frame 50 as shown in FIG. The fixing screw 1X for positioning of the present invention is used for the fixing points X located diagonally among the fixing points X and Y (FIG. 4 (d)), and other fixing points Y are shown in FIG. As shown in FIG. 4, a screw fixture 1Y of a type having a small height 18 and no step 18 in which the diameter of the small diameter cylindrical portion continues to the flange side is used. In the circuit board 60, the hole 61 drilled in the fixing portion Y where the screw fixture 1 Y without the step 18 is mounted is formed to have a smaller diameter than the hole 62 drilled in the fixing portion X.
If the screw fixing tool 1X for positioning is used at two fixing points on the diagonal line, the small-diameter cylindrical portion 19 of the screw fixing tool 1 is fitted into the hole 62 so that the position of the circuit board 60 with respect to the main body frame 50 is reached. Is easily determined, and the rotation of the circuit board 60 when the screw 70 is attached can be prevented from rotating.

上記したねじ固定具1の構造によれば、回路基板60の孔62に嵌合可能な小径円筒部19の存在により本体フレーム50と回路基板60との位置合わせを容易にすることができる。
また、ねじ70が螺着するねじ溝20を一連のプレス加工処理による一口のねじ溝20で形成するので、ねじ溝20が確実に形成されたねじ固定具1を得ることができるとともに、溝部14の存在により十分なかしめ強度が確保できるので、従来例で述べたように、本体フレーム50にねじ固定具1を装着した段階で不良品が発生することがなく、無駄になる部材の発生を防止することができる。
According to the structure of the screw fixture 1 described above, the positioning of the main body frame 50 and the circuit board 60 can be facilitated by the presence of the small diameter cylindrical portion 19 that can be fitted into the hole 62 of the circuit board 60.
Further, since the screw groove 20 to which the screw 70 is screwed is formed by a single screw groove 20 by a series of press processing, the screw fixture 1 in which the screw groove 20 is reliably formed can be obtained, and the groove portion 14 can be obtained. Since sufficient caulking strength can be ensured by the presence of the screw, as described in the conventional example, no defective product is generated when the screw fixture 1 is attached to the main body frame 50, and the generation of a wasted member is prevented. can do.

本考案のねじ固定具の実施の形態の一例を示すもので、(a)は平面説明図、(b)は側面説明図、(c)は平面図のA−A線断面説明図である。BRIEF DESCRIPTION OF THE DRAWINGS It shows an example of embodiment of the screw fixing tool of this invention, (a) is plane explanatory drawing, (b) is side surface explanatory drawing, (c) is AA sectional view explanatory drawing of the top view. 本考案のねじ固定具の実施の形態の他の例を示すもので、(a)は平面説明図、(b)は側面説明図、(c)は平面図のA−A線断面説明図である。The other example of embodiment of the screw fixing tool of this invention is shown, (a) is plane explanatory drawing, (b) is side explanatory drawing, (c) is AA sectional view explanatory drawing of the top view. is there. (a)〜(i)は、本考案のねじ固定具の製造工程を説明するための工程説明図である。(A)-(i) is process explanatory drawing for demonstrating the manufacturing process of the screw fixing tool of this invention. (a)〜(d)は、本考案のねじ固定具の使用の仕方を説明するための断面説明図である。(A)-(d) is sectional explanatory drawing for demonstrating how to use the screw fixing tool of this invention. (a)及び(b)は、本考案のねじ固定具の使用の仕方を説明するための一部拡大断面説明図である。(A) And (b) is a partially expanded cross-section explanatory drawing for demonstrating how to use the screw fixing tool of this invention. 本体フレームに対して回路基板を固定する場合の状態を示す平面説明図である。It is a plane explanatory view showing the state in the case of fixing a circuit board to a body frame. 位置決め用でないねじ固定具を使用した場合の固定構造を示す断面説明図である。It is sectional explanatory drawing which shows the fixing structure at the time of using the screw fixing tool which is not for positioning. 従来のねじ固定具の構造を示すもので、(a)は平面説明図、(b)は側面説明図、(c)は断面説明図である。The structure of the conventional screw fixing tool is shown, (a) is plane explanatory drawing, (b) is side surface explanatory drawing, (c) is sectional explanatory drawing. 従来のねじ固定具を使用した本体フレームと回路基板との固定状態を示す断面説明図である。It is sectional explanatory drawing which shows the fixed state of the main body frame and circuit board which use the conventional screw fixing tool.

符号の説明Explanation of symbols

1 ねじ固定具
10 円筒部
11 頂面
13 フランジ部
14 溝部
15 空間部
18 段差
19 小径円筒部
20 ねじ溝
21 段差吸収孔
30 帯状板
34 穴
45 かしめ処理
50 本体フレーム
60 回路基板
61 孔
62 孔
70 ねじ
71 谷部
DESCRIPTION OF SYMBOLS 1 Screw fixing tool 10 Cylindrical part 11 Top surface 13 Flange part 14 Groove part 15 Space part 18 Step 19 Small diameter cylindrical part 20 Screw groove 21 Step absorption hole 30 Strip board 34 Hole 45 Caulking process 50 Main body frame 60 Circuit board 61 Hole 62 Hole 70 Screw 71 Valley

Claims (4)

平板に形成された穴にかしめ処理されることで前記平板に対して固定可能なフランジ部と、該フランジ部に連続し内部に空間を存在させた円筒部とを具備するねじ固定具であって、
前記円筒部の反フランジ部側に円筒部より直径が小さい小径円筒部を設けて段差を形成し、
前記小径円筒部を塞ぐ頂面に、プレス加工処理により段差吸収孔を備えた一口のねじ溝を形成して成る
ことを特徴とするねじ固定具。
A screw fixture comprising: a flange portion that can be fixed to the flat plate by caulking in a hole formed in the flat plate; and a cylindrical portion that is continuous with the flange portion and has a space inside. ,
A step is formed by providing a small diameter cylindrical portion having a diameter smaller than that of the cylindrical portion on the side opposite to the flange portion of the cylindrical portion,
A screw fixture having a single screw groove having a step absorption hole formed by press working on a top surface that closes the small-diameter cylindrical portion.
電器製品等に内在される平板状の本体フレームに対して複数のねじ固定具をそれぞれかしめ処理で固定し、前記各ねじ固定具に対してねじを介して回路基板等を固定する場合の円筒状の位置決め用のねじ固定具であって、
本体フレームに形成された穴にかしめ処理されることで前記本体フレームに対して固定可能なフランジ部と、
該フランジ部に連続し内部に空間を存在させた円筒部と、
前記円筒部の反フランジ部側に、円筒部より直径が小さくなる段差を設けて前記回路基板に設けた孔に嵌合するよう形成した小径円筒部と、
前記小径円筒部を塞ぐ頂面に、プレス加工処理により形成された段差吸収孔を備えた一口のねじ溝と
を具備して成ることを特徴とするねじ固定具。
Cylindrical shape when fixing a plurality of screw fixtures to a flat body frame contained in electrical appliances by caulking, and fixing a circuit board to each screw fixture via a screw. Screw fixing tool for positioning,
A flange portion that can be fixed to the main body frame by being caulked in a hole formed in the main body frame;
A cylindrical portion that is continuous with the flange portion and has a space inside;
A small-diameter cylindrical portion formed so as to be fitted in a hole provided in the circuit board by providing a step whose diameter is smaller than that of the cylindrical portion on the side opposite to the flange portion of the cylindrical portion;
A screw fixture, comprising: a top screwed with a step absorption hole formed by a press working process on a top surface that closes the small-diameter cylindrical portion.
円筒部のフランジ部側端に、プレス加工で形成される溝部を設けた請求項2に記載のねじ固定具。 The screw fixture of Claim 2 which provided the groove part formed by press work in the flange part side end of a cylindrical part. 前記溝部を複数個形成し、各溝部がそれぞれ対向する位置に配置された請求項3に記載のねじ固定具。 The screw fixture according to claim 3, wherein a plurality of the groove portions are formed, and the groove portions are arranged at positions facing each other.
JP2007000753U 2006-07-10 2007-02-08 Screw fixture Expired - Lifetime JP3131207U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2007000753U JP3131207U (en) 2007-02-08 2007-02-08 Screw fixture
PCT/JP2007/063399 WO2008007593A1 (en) 2006-07-10 2007-07-04 Screw fixing device and method of manufacturing screw fixing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007000753U JP3131207U (en) 2007-02-08 2007-02-08 Screw fixture

Publications (1)

Publication Number Publication Date
JP3131207U true JP3131207U (en) 2007-04-26

Family

ID=43282011

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007000753U Expired - Lifetime JP3131207U (en) 2006-07-10 2007-02-08 Screw fixture

Country Status (1)

Country Link
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