JP4573633B2

JP4573633B2 - Shovel scoop

Info

Publication number: JP4573633B2
Application number: JP2004341407A
Authority: JP
Inventors: 実片山
Original assignee: 日工株式会社; トンボ工業株式会社
Priority date: 2004-11-26
Filing date: 2004-11-26
Publication date: 2010-11-04
Anticipated expiration: 2024-11-26
Also published as: JP2006152583A

Description

本発明は、土木作業や園芸作業などに使用するショベル・スコップに関する。 The present invention relates to an excavator scoop used for civil engineering work or gardening work.

土木作業などに用いられるショベル・スコップは、把柄が木製や鋼管製にて製作されているのが一般的である。そして、鋼管を把柄として使用するときには、把柄と匙体との接合部分に内挿管を挿入すると共に、把柄と匙体の突き合わせ部分を溶接により接合している（特許文献１）。
実開昭５５−２１３８２号 As for the shovel scoop used for civil engineering work, the handle is generally made of wood or steel pipe. And when using a steel pipe as a handle, while inserting an internal tube in the junction part of a handle and a housing, the butted part of a handle and a housing is joined by welding (patent document 1).
Japanese Utility Model Sho 55-21382

しかしながら、従来の木製や鋼管製の把柄を有するショベル・スコップでは、それなりの重量があり、作業性を高めるために軽量化の要望が強くなってきている。また、匙体と把柄の接合部付近は、使用時に手で握るところであり、その手ざわりの向上の要望もある。 However, the conventional shovel and scoop having a handle made of wood or steel pipe has a certain weight, and the demand for weight reduction is increasing in order to improve workability. In addition, the vicinity of the joint between the housing and the handle is gripped by hand during use, and there is a demand for improving the texture.

本発明は上記の点に鑑み、軽量化と使い勝手の良さを図ったショベル・スコップを提供することを課題とする。 In view of the above points, an object of the present invention is to provide an excavator scoop that is lightweight and easy to use.

本発明者は、上記の課題を解決するために、把柄に従来用いられることのなかったアルミ材を使用すれば強度を保ちながら軽量化を図れることに着目すると共に、鋼製の匙部とアルミ材の把柄の溶接が不可能ではあるがアルミ材の成形性の良さを利用すれば鋼製の匙部とアルミ材の把柄の接合が可能であると考えた。即ち、本発明の請求１記載のショベル・スコップにあっては、熱処理を施した鋼製の匙体と、該匙体を取り付ける棒状の把柄と、該把柄に取り付ける握り連結体及び握りとより構成されるショベル・スコップにおいて、前記把柄及び握り連結体をそれぞれアルミ材にて形成し、把柄及び握り連結体をアルミ溶接にて接合すると共に、匙体差込部は裏面側の隙間に溶接を施して筒状に形成し、かつ筒状に形成した匙体差込部の内径は把柄の嵌入部基部の外径よりも若干小径とし、該匙体差込部に把柄の嵌入部を圧入して匙体と把柄を接合し、リベットにて締結固定したことを特徴としている。 In order to solve the above-mentioned problems, the present inventor pays attention to the fact that the weight can be reduced while maintaining the strength by using an aluminum material that has not been used for the handle, and the steel flange portion and the aluminum. Although it was impossible to weld the handle of the material, it was considered possible to join the handle of the steel and the handle of the aluminum by using the good formability of the aluminum material. That is, the shovel scoop according to claim 1 of the present invention includes a steel case subjected to heat treatment, a rod-like handle to which the case is attached, a grip coupling body and a handle to be attached to the handle. In the excavator scoop, the handle and the grip coupling body are each formed of an aluminum material, and the handle and the grip coupling body are joined by aluminum welding, and the housing insertion portion is welded to the gap on the back side. The inner diameter of the cylindrical body insertion portion is slightly smaller than the outer diameter of the handle insertion portion base, and the handle insertion portion is press-fitted into the case insertion portion. It is characterized in that the frame and handle are joined and fastened with rivets.

また、請求項２記載のショベル・スコップにあっては、アルミ管から成る把柄の先端側をテーパー状に絞って匙体差込部に嵌め入れる嵌入部を成形したことを特徴としている。 Further, the shovel scoop according to claim 2 is characterized in that a fitting portion to be fitted into the housing insertion portion is formed by narrowing the tip end side of the handle made of an aluminum tube into a tapered shape.

また、請求項３記載のショベル・スコップにあっては、アルミ管から成る把柄の先端側に匙体差込部に嵌め入れるように成形した補強材を圧入して嵌入部を形成したことを特徴としている。 Moreover, in the shovel scoop according to claim 3, a reinforcing material formed so as to be fitted into the housing insertion portion is press-fitted into the distal end side of the handle made of an aluminum tube to form the fitting portion. It is said.

また、請求項４記載のショベル・スコップにあっては、把柄の嵌入部基部は把柄より外径を縮小させ、匙体差込部を把柄の嵌入部基部まで嵌入して接合したときに、把柄と匙体差込部の接合部の段差をなくすようにしたことを特徴としている。 Further, in the shovel scoop according to claim 4, when the handle insertion base portion has a smaller outer diameter than the handle and the case insertion portion is inserted and joined to the handle insertion base portion, The feature is that the step at the joint of the housing insertion part is eliminated.

本発明の請求項１記載のショベル・スコップによれば、把柄及び握り連結体をそれぞれアルミ材にて形成し、把柄及び握り連結体をアルミ溶接にて接合すると共に、匙体差込部は裏面側の隙間に溶接を施して筒状に形成し、かつ筒状に形成した匙体差込部の内径は把柄の嵌入部基部の外径よりも若干小径とし、該匙体差込部に把柄の嵌入部を圧入して匙体と把柄を接合し、リベットにて締結固定したので、アルミ材使用により従来の木製や鋼管製把柄のショベル・スコップよりも軽量化が図れ、取り扱い易いものとすることができる。また、材質が異なるために溶接接合ができないアルミ製把柄と鋼製匙部を強固に接合できてアルミ材使用のショベル・スコップの実現を可能とする。 According to the shovel scoop according to claim 1 of the present invention, the handle and the grip coupling body are each formed of an aluminum material, and the handle and the grip coupling body are joined by aluminum welding, and the housing insertion portion is on the back surface. The inner gap of the case insertion part formed in a cylindrical shape is slightly smaller than the outer diameter of the fitting fitting base, and the handle is inserted into the case insertion part. Since the housing and handle are joined by press-fitting and fixed with rivets, the use of aluminum material makes the weight and weight easier to handle than conventional wooden or steel tube handle shovels and scoops. be able to. In addition, it is possible to realize an excavator scoop using aluminum material by firmly joining an aluminum handle that cannot be welded due to different materials and a steel collar.

また、請求項２記載のショベル・スコップによれば、アルミ管から成る把柄の先端側をテーパー状に絞って匙体差込部に嵌め入れる嵌入部を成形したので、把柄の嵌入部が匙体差込部に深く嵌入されてその先端が匙体面と当接することによって連結部の強度を増すことができる。 Further, according to the shovel scoop according to claim 2, since the tip of the handle made of an aluminum tube is squeezed into a taper shape and the fitting portion to be fitted into the rod insertion portion is formed, the fitting portion of the handle is the rod The strength of the connecting portion can be increased by being deeply inserted into the insertion portion and the tip of the insertion portion being in contact with the housing surface.

また、請求項３記載のショベル・スコップによれば、アルミ管から成る把柄の先端側に匙体差込部に嵌め入れるように成形した補強材を圧入して嵌入部を形成したので、匙体差込部に嵌め入れて匙体と把柄の連結部を補強する補強材を別途製作することによって、把柄先端部をテーパー状に絞り成形するよりも安価に製作できる。 Further, according to the shovel scoop according to claim 3, since the reinforcing member formed so as to be fitted into the housing insertion portion is press-fitted into the distal end side of the handle made of an aluminum tube, the fitting portion is formed. By separately manufacturing a reinforcing material that is fitted into the insertion portion and reinforces the connecting portion between the housing and the handle, the tip end of the handle can be manufactured at a lower cost than when the tip is drawn into a tapered shape.

また、請求項４記載のショベル・スコップによれば、把柄の嵌入部基部は絞り加工によって把柄より外径を縮小させ、匙体差込部を把柄の嵌入部基部まで嵌入して接合したときに、把柄と匙体差込部の接合部の段差をなくすようにしたので、把柄と匙体の接合部付近を手で握る時に、手ざわりが良く、使い勝手の良いものとなる。 Further, according to the shovel scoop according to claim 4, when the handle insertion portion base is reduced in outer diameter than the handle by drawing, and the housing insertion portion is inserted and joined to the handle insertion portion base Since the step between the joint between the handle and the case insertion portion is eliminated, when the vicinity of the joint between the handle and the case is grasped by hand, the texture is good and the usability is good.

本発明の請求項１記載のショベル・スコップによれば、把柄、握り連結体を軽量な材質であるアルミ材にて形成する。なお、握りはアルミ材または木製とする。そして、把柄と握り連結体と握り材をアルミ溶接にて一体的に接合する。なお、握りが木製であるときには握り連結体に釘等にて固着する。また、匙体差込部は裏面側の隙間に溶接を施して筒状に形成し、かつ筒状に形成した匙体差込部の内径は把柄の嵌入部基部の外径よりも若干小径とする。そして、匙体差込部にアルミ製の把柄の嵌入部を圧入し、アルミ製の把柄の成形性の良さを利用しながら把柄の嵌入部基部の外径を縮径して嵌め入れ、把柄と匙体差込部を強固に密着させて接合し、リベットなどの締結具にて締結固定する。 According to the shovel scoop of the first aspect of the present invention, the handle and the grip coupling body are formed of an aluminum material which is a lightweight material. The grip is made of aluminum or wood. And a handle, a grip coupling body, and a grip material are integrally joined by aluminum welding. When the grip is made of wood, it is fixed to the grip connecting body with a nail or the like. Also, the housing insertion part is formed into a cylindrical shape by welding the gap on the back side, and the inner diameter of the cylindrical insertion part formed in the cylindrical shape is slightly smaller than the outer diameter of the fitting insertion base of the handle. To do. Then, the fitting portion of the aluminum handle is press-fitted into the housing insertion portion, and the outer diameter of the fitting fitting base portion is reduced and fitted while utilizing the good formability of the aluminum handle. The housing insertion part is tightly adhered and joined, and is fastened and fixed with a fastener such as a rivet.

このように、把柄、握り連結体は、アルミ製で同一材料であるためにアルミ溶接により一体的に接合できる。また、アルミ製の把柄と鋼製の匙体との接合は、異なる材質のために溶接による接合が不可能であるが、匙体差込部の裏面側の隙間に溶接を施して筒状に形成し、該匙体差込部に外径の若干大なるアルミ製の把柄を圧入し、アルミの成形性の良さを利用して把柄の外径を縮径しながら接合することによって、がたつきもなく強固に接合でき、アルミ製の把柄と鋼製の匙体との接合が実現でき、ショベル・スコップの軽量化を図ることが可能となり、使い勝手も良くなる。 Thus, since the handle and the grip coupling body are made of aluminum and made of the same material, they can be integrally joined by aluminum welding. In addition, the joining of the aluminum handle and the steel case is impossible due to the different materials, but welding is applied to the gap on the back side of the case insertion part to form a cylinder. By forming, press fitting an aluminum handle having a slightly larger outer diameter into the housing insertion portion, and joining while reducing the outer diameter of the handle using the good formability of aluminum. It is possible to join the steel handle and the steel frame with ease, making it possible to reduce the weight of the shovel and scoop, and improving usability.

また、請求項２記載のショベル・スコップによれば、アルミ管から成る把柄の先端側をスエージング加工または絞り加工等にて漸次縮径してテーパー状に絞り、匙体差込部へ嵌め入れる嵌入部を成形する。そして、把柄のテーパー状の嵌入部を匙体差込部に嵌入し、嵌入部の先端を匙体面に当接させながら把柄と匙体を連結する。これによって、匙体差込部に深く嵌入された把柄の嵌入部の先端が匙体面と当接することによって連結部の強度を増すことができる。 Further, according to the shovel scoop according to claim 2, the tip side of the handle made of an aluminum tube is gradually reduced in diameter by swaging or drawing to be tapered to be fitted into the housing insertion portion. The fitting part is formed. And the handle and the housing are connected while the tapered insertion portion of the handle is inserted into the housing insertion portion and the tip of the insertion portion is brought into contact with the housing surface. Thereby, the strength of the connecting portion can be increased by the tip of the fitting insertion portion of the handle deeply inserted into the housing insertion portion contacting the housing surface.

また、請求項３記載のショベル・スコップによれば、前記のように、アルミ製の把柄の先端部を、例えばスエージング加工によってテーパー状に絞って嵌入部を成形するのはコスト高となるので、匙体差込部に嵌め入れるように成形した補強材を別途製作し、この補強材を把柄の先端部に圧入して固定する。これによって、把柄の嵌入部の製作が簡単になり、安価にショベルを製造できる。 Further, according to the shovel scoop according to claim 3, as described above, it is expensive to form the fitting portion by narrowing the tip of the aluminum handle into a tapered shape by, for example, swaging. A reinforcing material molded so as to be fitted into the housing insertion part is separately manufactured, and this reinforcing material is press-fitted into the tip of the handle and fixed. This simplifies the production of the handle fitting portion and allows the excavator to be manufactured at low cost.

また、請求項４記載のショベル・スコップによれば、把柄の嵌入部基部は絞り加工によって把柄より外径を若干縮小させると共に、匙体差込部の外径を把柄の外径とほぼ同一程度とし、匙体差込部を把柄の嵌入部基部まで嵌入して接合したときに、把柄と匙体差込部の接合部の段差をなくすようにする。これによって、ショベル使用時に、把柄と匙体の接合部付近を手で握ったときに手が段差に引っ掛かることもなくて手ざわりも良く、使い勝手の良いものとなる。 Further, according to the shovel scoop according to claim 4, the fitting insertion base portion of the handle is slightly reduced in outer diameter from the handle by drawing, and the outer diameter of the housing insertion portion is approximately the same as the outer diameter of the handle. When the housing insertion part is inserted and joined to the fitting insertion base of the handle, the step between the joining portion of the handle and the housing insertion part is eliminated. As a result, when the excavator is used, when the vicinity of the joint between the handle and the case is gripped by hand, the hand does not get caught in the step and the touch is good and the usability is good.

以下、本発明の実施例を図１乃至図３に基づいて説明する。 Embodiments of the present invention will be described below with reference to FIGS.

図中の１は、本発明のショベルであって、把柄２、握り連結体３、握り４、及び匙体５から成り、前記把柄２、握り連結体３、及び握り４はアルミ材によって形成する。なお、握り４は、アルミ材でも良いが、寒冷地での使用を考慮すると手ざわりの良い木製でも良い。 Reference numeral 1 in the figure denotes an excavator according to the present invention, which includes a handle 2, a grip coupling body 3, a grip 4, and a housing 5. The grip 2, the grip coupling body 3, and the grip 4 are made of an aluminum material. . The grip 4 may be made of an aluminum material, but may be made of wood that has a good texture when used in a cold region.

前記把柄２は、アルミ材から成るパイプ形状のもので、把柄２の先端側を、図２に示すように、先端部に向かうほど漸次縮径してテーパー状に絞ることにより、匙体差込部５ａ内へ嵌め入れる嵌入部２ａを成形している。 The handle 2 is in the shape of a pipe made of an aluminum material. As shown in FIG. 2, the handle 2 is gradually reduced in diameter toward the tip and narrowed into a tapered shape, thereby inserting the housing. A fitting portion 2a to be fitted into the portion 5a is formed.

把柄２の嵌入部２ａは、スエージングマシンによるスエージング加工、絞り加工、プレス加工、引き抜き加工、または押し出し加工等を利用して、テーパー状に形成し、その先端部は小径の水抜き孔（図示せず）を残しながら丸めてほぼ閉塞するように加工し、ショベル使用時に把柄２内に土壌などの異物の侵入を阻止するようにしている。また、図２のように、好ましくは、嵌入部２ａの基部２ｂは絞り加工によって把柄２より外径を若干縮小させると共に、匙体差込部５ａの外径を把柄２の外径とほぼ同一にする。なお、縮径する嵌入部基部２ｂの長さは５ｃｍ程度で良い。これによって、匙体差込部５ａを嵌入部基部２ｂ側まで嵌入したときに、把柄２と匙体差込部５ａの接合部の段差が極力なくなってショベル使用中に手が引っ掛かりにくくて使い勝手が良くなる。また、把柄２の嵌入部基部２ｂの両側部にはリベット６を挿通させるための透孔を穿設している。 The fitting portion 2a of the handle 2 is formed into a tapered shape by using a swaging process, a drawing process, a press process, a drawing process, an extrusion process, or the like by a swaging machine, and the tip part thereof has a small-diameter drain hole ( It is processed so as to be almost closed by leaving it rounded (not shown), so that foreign matter such as soil is prevented from entering the handle 2 when the shovel is used. As shown in FIG. 2, the base 2b of the fitting portion 2a is preferably slightly reduced in outer diameter from the handle 2 by drawing, and the outer diameter of the housing insertion portion 5a is substantially the same as the outer diameter of the handle 2. To. In addition, the length of the fitting base 2b to be reduced in diameter may be about 5 cm. As a result, when the housing insertion portion 5a is inserted to the insertion portion base portion 2b side, the difference in level between the handle 2 and the housing insertion portion 5a is minimized, and the hand is not easily caught during use of the shovel, so that it is easy to use. Get better. In addition, through holes for inserting the rivets 6 are formed in both side portions of the fitting base portion 2b of the handle 2.

匙体５は耐摩耗のために熱処理した鋼を使用しており、その匙体差込部５ａは裏面側の隙間に溶接部７を施して筒状に形成すると共に、この筒状に形成した匙部差込部５ａの内径を把柄２の嵌入部基部２ｂの外径よりも例えば、０．５〜１．０ｍｍ程度小さい径としている。また、匙部差込管５ａの両側部にはリベット６を挿通させるための透孔を穿設している。 The housing 5 is made of heat-treated steel for wear resistance, and the housing insertion portion 5a is formed in a cylindrical shape by applying a welded portion 7 to the gap on the back surface side, and is formed in this cylindrical shape. The inner diameter of the flange insertion part 5a is set to a diameter that is, for example, about 0.5 to 1.0 mm smaller than the outer diameter of the fitting base 2b of the handle 2. Moreover, the through-hole for inserting the rivet 6 is drilled in the both sides of the collar insertion tube 5a.

上記の把柄２、握り連結体３、握り４、及び匙体５を一体的に接合してショベルを形成するときは、先ず、同じアルミ材から形成した握り連結体３と握り４とをアルミ溶接にて接合する。次に、この握り連結体３を同じくアルミ材から形成した把柄２の一端部に嵌め入れてアルミ溶接にて接合する。なお、握り４が木製であるときには、握り連結体３に釘等にて固定する。 When the excavator is formed by integrally joining the handle 2, the grip coupling body 3, the grip 4, and the housing 5, first, the grip coupling body 3 and the grip 4 formed of the same aluminum material are welded with aluminum. Join with. Next, this grip coupling body 3 is fitted into one end portion of the handle 2 which is also made of an aluminum material and joined by aluminum welding. When the grip 4 is wooden, it is fixed to the grip connecting body 3 with a nail or the like.

次に、図２のように、把柄２の絞り成形した嵌入部２ａを匙体差込部５ａの筒状開口部に臨ませ、機械的圧入手段により嵌入部２ａを匙体差込部５ａに圧入する。これによって、匙体差込部５ａの筒状開口部より若干大きな径のアルミ製の把柄２の嵌入部基部２ｂは縮径されながら嵌め入れられ、がたつきのないように強固に接合される。このとき、嵌入部２ａの先端は匙体差込部５ａの内面に当接させるようにする。そして、匙体差込部５ａと把柄２の嵌入部基部２ｂとに穿接した透孔にリベット６を装着して締結固定する。このリベット６はショベル使用時における把柄２の抜け止めと回転防止の役割を果たす。 Next, as shown in FIG. 2, the draw-in fitting portion 2a of the handle 2 faces the cylindrical opening of the housing insertion portion 5a, and the fitting portion 2a is brought into the housing insertion portion 5a by mechanical press-fitting means. Press fit. As a result, the fitting base 2b of the aluminum handle 2 having a diameter slightly larger than the cylindrical opening of the housing insertion portion 5a is fitted while being reduced in diameter, and is firmly joined to prevent rattling. At this time, the tip of the fitting portion 2a is brought into contact with the inner surface of the housing insertion portion 5a. Then, the rivet 6 is attached and fastened to the through hole formed in the housing insertion portion 5a and the fitting base portion 2b of the handle 2. The rivet 6 serves to prevent the handle 2 from coming off and prevent rotation when the shovel is used.

このように、把柄２、握り連結体３、及び握り４はアルミ溶接にて一体に接合すると共に、匙体差込部５ａは裏面側に溶接部７を施して隙間をなくして筒状に形成し、匙体差込部５ａの筒状部に嵌入部基部２ｂを縮径させながら圧入させたので、がたつきもなくて強固に固定された軽量なショベルが実現できる。 In this manner, the handle 2, the grip coupling body 3, and the grip 4 are integrally joined by aluminum welding, and the housing insertion portion 5a is formed in a cylindrical shape with a welded portion 7 on the back surface side to eliminate a gap. In addition, since the fitting base portion 2b is press-fitted into the cylindrical portion of the housing insertion portion 5a while being reduced in diameter, a light excavator that is firmly fixed without rattling can be realized.

また、把柄２の先端部をテーパー状に絞って嵌入部２ａを形成し、該嵌入部２ａを匙体差込部５ａに嵌入したので、匙体５と把柄２との接続部の強度は、図３に示す嵌入部２ａの先端部が匙体差込部５ａの内面と当接する部分Ａと、溶接を施した匙体差込部５ａの筒状部にて強固に支えて十分な強度を発揮する。 Moreover, since the fitting portion 2a is formed by narrowing the tip portion of the handle 2 in a tapered shape, and the fitting portion 2a is inserted into the housing insertion portion 5a, the strength of the connecting portion between the housing 5 and the handle 2 is as follows. 3 is firmly supported by the portion A where the tip of the fitting portion 2a contacts the inner surface of the housing insertion portion 5a and the tubular portion of the welded housing insertion portion 5a. Demonstrate.

また、嵌入部基部２ｂは把柄２の外径より縮小させて成形し、かつ匙体差込部５ａの外径を把柄２の外径とほぼ同一にし、匙体５と把柄２の連結時に匙体差込部５ａと把柄２の接合部の段差をなくすようにようにすることによって、把柄２と匙体差込部５ａの接合部付近を手で握ったときに手が段差に引っ掛かることもなくて手ざわりも良く、使い勝手の良いものとなる。 In addition, the fitting base 2b is formed to be smaller than the outer diameter of the handle 2, and the outer diameter of the housing insertion portion 5a is made substantially the same as the outer diameter of the handle 2, so that when the housing 5 and the handle 2 are connected, By eliminating the step between the joint between the body insertion portion 5a and the handle 2, the hand may be caught by the step when the vicinity of the joint between the handle 2 and the housing insertion portion 5a is grasped by hand. It has no touch and is easy to use.

図４は本発明のショベル・スコップの他の実施例を示すものであって、把柄２と匙体３の連結部の側面図を示しており、図４中図１〜図３で示したものと同一のものには同一符号を付してある。実施例１と相違するところは、図２の把柄２の先端部をテーパー状に絞って嵌入部２ａを形成するのに代えて、アルミ製の補強材８を別途成形し、該補強材８を把柄２の嵌入部基部２ｂに圧入し、アルミ溶接することによって連結固定したものである。なお、アルミ溶接せずにリベット６を利用して把柄２、匙体３と一体的に締結するようにしても良い。 FIG. 4 shows another embodiment of the shovel and scoop of the present invention, showing a side view of the connecting portion between the handle 2 and the housing 3, and shown in FIGS. 1 to 3 in FIG. The same symbols are attached to the same components. The difference from the first embodiment is that instead of forming the fitting portion 2a by narrowing the tip of the handle 2 in FIG. 2 into a tapered shape, an aluminum reinforcing material 8 is separately formed, and the reinforcing material 8 is It is press-fitted into the fitting base 2b of the handle 2 and connected and fixed by aluminum welding. In addition, you may make it fasten integrally with the handle 2 and the housing | casing 3 using the rivet 6, without aluminum welding.

補強材８は匙体差込部５ａに嵌入したときに、補強材８の湾曲部８ａが匙体差込部５ａ内面に強く当接して連結部を補強するようにプレス加工にて成形すると共に、補強材基部８ｂは筒形状とし、アルミ材の成形性の良さを利用して把柄２の嵌入部基部２ｂに圧入してがたつきのにように強固に接合できるようにし、かつ補強材８によって把柄２内への土砂の進入を阻止できるようにしておく。 When the reinforcing member 8 is fitted into the housing insertion portion 5a, the curved portion 8a of the reinforcing member 8 is pressed by pressing so that the curved portion 8a strongly contacts the inner surface of the housing insertion portion 5a and reinforces the connecting portion. The reinforcing material base 8b is formed into a cylindrical shape so that it can be firmly joined to the fitting base 2b of the handle 2 by being press-fitted into the fitting base 2b using the good formability of the aluminum material. It is possible to prevent the entry of earth and sand into the handle 2.

そして、アルミ製の把柄２と鋼製の匙体３を連結するときには、先ず、補強材８を把柄２の嵌入部基部２ｂに圧入してからアルミ溶接によって連結する。次に、把柄２と連結した補強材８を匙体差込部５ａの筒状開口部に臨ませ、機械的圧入手段により匙体差込部５ａに圧入する。これによって、匙体差込部５ａの筒状開口部より若干大きな径のアルミ製の把柄２の嵌入部基部２ｂは縮径されながら嵌め入れられ、がたつきのないように強固に接合される。このとき、補強材８の湾曲部８ａは匙体差込部５ａ内面に強く当接して連結を強固なものとする。そして、匙体差込部５ａと把柄２の嵌入部基部２ｂとに穿接した透孔にリベット６を装着して締結固定する。 When the aluminum handle 2 and the steel casing 3 are connected, first, the reinforcing member 8 is press-fitted into the fitting base 2b of the handle 2 and then connected by aluminum welding. Next, the reinforcing member 8 connected to the handle 2 is made to face the cylindrical opening of the housing insertion portion 5a and is press-fitted into the housing insertion portion 5a by mechanical press-fitting means. As a result, the fitting base 2b of the aluminum handle 2 having a diameter slightly larger than the cylindrical opening of the housing insertion portion 5a is fitted while being reduced in diameter, and is firmly joined to prevent rattling. At this time, the curved portion 8a of the reinforcing member 8 strongly contacts the inner surface of the housing insertion portion 5a to strengthen the connection. Then, the rivet 6 is attached and fastened to the through hole formed in the housing insertion portion 5a and the fitting base portion 2b of the handle 2.

このように、匙体差込部５ａに嵌め入れるように成形した補強材８を別途製作し、この補強材８を把柄２の先端部に挿入して固定すれば、実施例１のように、スエージング加工等によって把柄３先端部をテーパー状に絞って成形することに比べて安価に製造できる。 In this way, if the reinforcing material 8 formed so as to be fitted into the housing insertion portion 5a is separately manufactured, and the reinforcing material 8 is inserted and fixed to the distal end portion of the handle 2, as in Example 1, It can be manufactured at a lower cost than the case where the tip of the handle 3 is formed into a tapered shape by swaging or the like.

本発明に係るショベルの、（ａ）正面図、（ｂ）背面図である。It is (a) front view and (b) back view of the shovel which concerns on this invention. 本発明に係るショベルの匙体に把柄を挿入する状態を説明する図である。It is a figure explaining the state which inserts a handle in the housing of the shovel which concerns on this invention. 本発明に係るショベルの匙体に把柄を挿入した状態を説明する背面図である。It is a rear view explaining the state which inserted the handle into the housing of the shovel which concerns on this invention. 本発明に係るショベルの他の実施例で、把柄と匙体の連結部を説明する側面図である。It is a side view explaining the connection part of a handle and a housing in other examples of the excavator concerning the present invention.

Explanation of symbols

１…ショベル２…把柄
２ａ…嵌入部２ｂ…嵌入部基部
３…握り連結体４…握り
５…匙体５ａ…匙体差込部
６…リベット（締結具）７…溶接部
８…補強材 DESCRIPTION OF SYMBOLS 1 ... Excavator 2 ... Handle 2a ... Insertion part 2b ... Insertion part base 3 ... Grip coupling body 4 ... Grip 5 ... Housing 5a ... Housing insertion part 6 ... Rivet (fastener) 7 ... Welding part 8 ... Reinforcement material

Claims

In a shovel scoop composed of a heat-treated steel housing, a rod-like handle to which the housing is attached, a grip coupling body and a grip to be attached to the grip, the grip and the coupling body are each made of an aluminum material. The handle and the grip coupling body are joined by aluminum welding, and the housing insertion part is welded to the gap on the back side to form a cylinder, and the housing insertion formed into a cylinder The inner diameter of the part is slightly smaller than the outer diameter of the base part of the handle insertion part, the handle insertion part is press-fitted into the case insertion part, the case and the handle are joined, and the rivet is fastened and fixed. Excavator scoop.

2. The shovel scoop according to claim 1, wherein an insertion portion to be fitted into the housing insertion portion is formed by narrowing a tip end side of a handle made of an aluminum tube into a taper shape.

The shovel scoop according to claim 1, wherein a fitting material is press-fitted into a distal end side of a handle made of an aluminum tube so as to be fitted into the housing insertion portion to form an insertion portion.

The fitting base of the handle has a smaller outer diameter than the handle, and when the case insertion part is inserted and joined to the fitting insertion base of the handle, the step between the joint of the handle and the case insertion part is eliminated. The shovel scoop according to any one of claims 1 to 3, wherein