TWI674175B - Tool combination device - Google Patents

Abstract

The present invention discloses a tool assembly device including a connecting portion, a grip, and a blade; A radial cut is formed at one end of the connecting portion; the radial cut of the connecting portion is inserted and fixed by using a blade; the connecting portion and the handle are integrally formed by blow molding, or the connecting portion is made by injection molding and the handle is It can be made by blow molding, or the connecting part and the handle are welded with ultrasonic waves, etc., which can not only achieve the advantages of simple assembly and convenient manufacturing, but also shorten the manufacturing man-hours and save materials, thereby reducing costs; further, it can further avoid When the blade is used with too much force, the connection part detaches from the handle, which means that the connection strength between the connection part and the handle can be strengthened.

Description

Tool combination device

The invention relates to the related field of a tool, in particular to a tool combination device for a putty knife.

According to the "putty knife" is the blade used to remove the residual paint on the wall in the construction project. Because the cement maker is used very frequently and exerts a large force, the structure between the blade and the handle of the knife should be special Design, and the conventional putty knife structure is fixed on the handle of the knife body for the upper and lower clips, and is fixed with rivets through the upper clip, the blade body and the lower clip, but this type of structure has The disadvantages are as follows.

First of all, after the rivets are used for a long time, the structure is easy to loose. This is because the clamping force is mainly at the rivets, and not surface contact. Therefore, it is loosened by lateral thrust; Since most of these upper and lower clips are made of wood and have high hardness, when the force is applied to the tool for a long time, it is easy to cause the problem of component separation.

The conventional putty knife has another structure, which is mainly provided with a hard plastic grip, which is directly combined with the handle of the knife body when it is injection-molded, so that a relatively stable structure can be obtained, but its implementation is also There are disadvantages.

First, because the knife handle should have a certain thickness for easy grip, but after this thickness is combined with the knife body, its cooling time is longer, which means that the product's manufacturing time is too long, which increases its unit price cost. The connection between the handle and the blade is still easy to cause the components to detach from each other and strengthen The strength of the connection between the knife handle and the blade body. Furthermore, the knife handles are made of hard plastic, which consumes more material and causes waste, especially in mass production. Because the tools are treated with planed surface Or, if it is put into the process of combining the mold with the hard plastic, it often results in the unavoidable friction between the tool and the mold, resulting in scratches (scars). Finally, in order to increase production, the mold is quickly cooled, and water is used for heat dissipation. , The knife is immersed in water, and then re-entered in cold water at medium and high temperatures, it is very easy to oxidize and rust.

In order to solve the above problems, an object of the present invention is to provide a tool assembly device in which a connecting portion and a handle are integrally formed by blow molding, or a connecting portion is made by injection molding and the handle is made by blow molding. It can be achieved by ultrasonic welding of the connecting part and the handle, which can not only achieve the advantages of simple assembly and convenient manufacturing, but also shorten the manufacturing man-hours and save materials, thereby reducing costs; further, it can further avoid the use of blades. Excessive force causes the connection part to detach from the handle, which means that the connection strength between the connection part and the handle can be strengthened.

To achieve the above object, the present invention provides a tool assembly device including a connecting portion and formed with a radial cut; a handle that is integrally formed with the connecting portion through blow molding; and a blade at the connecting portion The radial incision of the connecting portion is inserted during blow molding, and then clamped by an auxiliary jig. After cooling, the auxiliary jig is removed to connect and fix the blade and the connecting portion.

In a first embodiment of the present invention, the connecting portion and the grip are integrally formed by blow molding; the blade has a knife portion and a tooth portion, one end of the knife portion is connected to the tooth portion, and the tooth portion The teeth are inserted into the radial cut of the connecting portion, and the tooth portion is engaged with an inner wall surface of the radial cut to be fixed; the tooth portion is inclined toward the direction of the knife portion and outward.

In a second embodiment of the present invention, the connecting portion is made by injection molding, and the grip is made by blow molding; the first end of the connecting portion has at least one barb block, and the grip portion One The end is provided with a convex part, and a barb loop is provided on the outer side wall ring of the convex part, the convex part is inserted into the first end of the connecting part, and is fastened with each other by the at least one barb block and the barb loop; The blade has a knife portion and a tooth portion, one end of the knife portion is connected to the tooth portion, the tooth portion is inserted into the radial cutout of the connection portion, and the tooth portion is engaged with an inner wall surface of the radial cutout to be fixed; The teeth are inclined toward the blade and outward.

In a third embodiment of the present invention, a grip is formed by blow molding, one end of the grip forms a receiving portion, and a barb portion is formed in the receiving portion; and the other is a connecting portion formed by injection molding. A radial cutout is provided at the open end of the connecting portion, and a barb block is formed on the other side of the connecting portion; and a blade has a knife portion and a tooth portion; thus, the connecting portion can be placed in the grip When it is inside the receiving portion, the barb block will be fixed on the barb block of the handle and fastened with each other; and the tooth portion of the blade is inserted into the radial cut of the connection portion, so that the tooth portion is engaged with the inner wall surface of the radial cut And fixed.

In a fourth embodiment of the present invention, the connection portion and the grip are connected by ultrasonic fusion welding; the inner side wall of the first end of the connection portion has an inner concave ring groove and an inner convex ring, The inner convex ring is disposed adjacent to the handle, the inner concave ring groove is adjacent to the side of the inner convex ring remote from the handle, and one end of the handle adjacent to the connecting portion has a convex portion, and the outer side of the convex portion is annularly disposed. There is a buckling convex ring and a buckling groove, the buckling convex ring is arranged adjacent to the connecting portion, the buckling groove is adjacent to the side of the buckling convex ring away from the connecting portion, and the inner concave ring groove is provided for the card The buckle ring is fastened and fixed, and the buckle groove is used for the buckle ring to be fastened and fixed.

100-103‧‧‧tool combination device

1‧‧‧ Connection Department

13‧‧‧Radial incision

130‧‧‧ by the side

14‧‧‧ barb block

15‧‧‧ recessed ring groove

16‧‧‧convex ring

2‧‧‧ grip

21‧‧‧ convex

22‧‧‧ barb loop

23‧‧‧ Snap Ring

24‧‧‧Snap groove

25‧‧‧accommodation department

26‧‧‧Barb

3‧‧‧ Blade

31‧‧‧Blade

310‧‧‧ abutment

32‧‧‧Tooth

320‧‧‧ Axial teeth

33‧‧‧Combination hole

FIG. 1 is a schematic diagram showing the appearance of a first embodiment of the tool combination device of the present invention.

Fig. 2 is an enlarged schematic sectional view showing a first embodiment of the tool combination device of the present invention.

Figure 2-1 is a cross-sectional view of inserting the tooth portion of the blade into the radial cut of the connecting portion without clamping the auxiliary jig.

2-2 are cross-sectional views of the tool combination device according to the first embodiment of the present invention in another direction.

FIG. 3 is an exploded view showing a second embodiment of the tool combination device of the present invention.

FIG. 4 is a schematic cross-sectional view showing the second embodiment of the tool combination device of the present invention.

Fig. 5 is an exploded view showing the third embodiment of the tool combination device of the present invention.

Fig. 6 is an enlarged sectional view showing the third embodiment of the tool combination device of the present invention.

FIG. 7 is a schematic diagram showing an appearance of a fourth embodiment of the tool combination device of the present invention.

Fig. 8 is an enlarged schematic cross-sectional view showing a fourth embodiment of the tool combination device of the present invention.

Please refer to FIG. 1 and FIG. 2 at the same time. The tool assembly device 100 of the present invention includes a handle 2 with a connecting portion 1 and a blade 3, wherein the handle 2 is blow molded.

In addition, the connecting portion 1 forms a radial cut 13 and two abutting surfaces 130 connecting the radial cut 13 at the same time during blow molding.

Please refer to FIG. 1 and FIG. 2 first, which are related illustrations showing the first embodiment of the present invention. In the first embodiment of the tool combination device 100 of the present invention, the connecting portion 1 and the handle 2 are integrally formed by blow molding. .

The blade 3 has a knife portion 31, two coupling holes 33, and a tooth portion 32. One end of the knife portion 31 is connected to the tooth portion 32. The knife portion 31 has two abutment surfaces 310 connecting the tooth portion 32 and the tooth portion 32 has The plurality of axial bites 320 are arranged on both sides, and the tooth portion 32 is inserted into the radial cut 13 of the connection portion 1. Since the tooth portion 32 is inclined toward the blade portion 31 and outwards, the teeth 32 and the radial cut 13 are An inner wall surface is engaged and fixed; wherein the blade 3 is blown on the handle 2 When molding, insert the radial cut 13 of the connecting part 1 of the handle 2 in the direction of the arrow in Figure 2-1, and then use an auxiliary jig (not shown, this is a commonly used jig, so it will not be repeated). The connection portion 1 and the tooth portion 32 of the blade 3 are fixed so that the connection portion 1 is deformed by the clamping force of the jig and enters between the plurality of axial bites 320 along the direction of the dotted arrow in FIG. 2-1 and enters the second combination. Inside the hole 33 (as shown in Fig. 2-2), and the two abutting surfaces 130 of the radial cut 13 abut the two abutting surfaces 310 to be firmly combined, and the auxiliary jig is removed after cooling down for a while Thus, the tooth portion 32 can be completely and firmly fixed to the connecting portion 1 of the handle 2.

With the above structure, it is not only easy to assemble, but also because the connecting part 1 and the handle 2 are integrally formed by blow molding during production, so it is not only convenient to manufacture, but also can save a lot of plastic materials and reduce costs; furthermore, by using The auxiliary jig can fully and firmly fit or fix the tooth portion 32 of the blade 3.

Please refer to FIG. 3 to FIG. 4 again, which are related illustrations showing the second embodiment of the present invention. In the second embodiment of the tool combination device 101 of the present invention, the connecting portion 1 is made by injection molding, and the grip 2 is made by blow molding, the two are different components.

In addition, the inside of the connecting portion 1 has at least one barb block 14 (two examples are illustrated in the embodiment, but not limited to this). One end of the grip 2 has a convex portion 21 and the convex portion 21 is outside. The wall ring is provided with a barb ring 22, and the convex portion 21 is inserted into the inside of the connection portion 1, and each barb block 14 and the barb ring 22 are fastened and fixed to each other.

At the same time, the blade 3 has a knife portion 31 and a tooth portion 32. One end of the knife portion 31 is connected to the tooth portion 32, and the tooth portion 32 is inserted into the radial cut 13 of the connection portion 1. The outer portion is inclined, so that the tooth portion 32 is engaged with an inner wall surface of the radial cut 13 to be fixed.

With the above structure, since the connecting portion 1 is made by injection molding, and the grip 2 is made by blow molding, it is not only convenient to manufacture, but also saves materials to reduce costs, and further achieves the effect of easy assembly; In addition, it can further avoid the situation that the connection portion 1 is detached from the handle 2 due to excessive force applied when the blade 3 is used, which means that the connection strength between the connection portion 1 and the handle 2 can be strengthened.

Please refer to FIG. 5 to FIG. 6 again, which are related illustrations showing the third embodiment of the present invention. In the third embodiment of the tool combination device 102 of the present invention, the connecting portion 1 is also made by injection molding, and the grip The handle 2 is made by blow molding, and the two are different components.

Furthermore, a barb block 14 is formed on one side of the connecting portion 1 (two examples are illustrated in this embodiment, but not limited to this), and the connecting portion 1 forms a radial cut 13; the grip A receiving portion 25 is formed at one end of 2 and a barb portion 26 is formed in the receiving portion 25, so that when the connecting portion 1 is placed in the receiving portion 25 of the handle 2, its barb block 14 will It is fixed on the barb part 26 of the handle 2 and fastened with each other.

At the same time, the blade 3 has a knife portion 31 and a tooth portion 32. One end of the knife portion 31 is connected to the tooth portion 32, and the tooth portion 32 is inserted into the radial cut 13 of the connection portion 1. The outside is inclined, so that the tooth portion 32 and the inner wall surface of the connection portion 1 of the radial cut 13 engage with each other and are closely fitted and fixed.

With the above structure, since the connecting portion 1 is made by injection molding, and the grip 2 is made by blow molding, it is not only convenient to manufacture, but also saves materials to reduce costs, and further achieves the effect of easy assembly; In addition, it can further avoid the situation that the connection portion 1 is detached from the handle 2 due to excessive force applied when the blade 3 is used, which means that the connection strength between the connection portion 1 and the handle 2 can be strengthened.

Finally, please refer to FIG. 7 and FIG. 8 again, which are related illustrations showing the fourth embodiment of the present invention; in the fourth embodiment of the tool combination device 103 of the present invention, the connection manner of the connecting portion 1 and the handle 2 It is welded by ultrasonic fusion.

Furthermore, the inner side wall of the connecting portion 1 has an inner concave ring groove 15 and an inner convex ring 16. The inner convex ring 16 is disposed adjacent to the handle 2, and the inner concave ring groove 15 is adjacent to the side of the inner convex ring 16 away from the handle 2. An end of the handle 2 adjacent to the connecting portion 1 has a convex portion 21, and an outer side ring of the convex portion 21 is provided with a snap convex ring 23 and a snap groove 24, and the snap convex ring 23 is provided adjacent to the connection portion 1. The buckle groove 24 is adjacent to the side of the buckle convex ring 23 away from the connecting portion 1, the inner concave ring groove 15 is used for the buckle convex ring 23 to be fastened and fixed, and the buckle groove 24 is used for the inner convex ring 16 to be fastened and fixed.

Therefore, with the above structure, since the connection method of the connecting portion 1 and the handle 2 is ultrasonic welding, once the assembly is completed, ultrasonic welding can be performed, which is not only convenient for manufacturing, but also saves materials to reduce costs, and further shortens Manufacturing time; further, it can further avoid the situation that the connection portion 1 is detached from the handle 2 due to excessive force applied when the blade 3 is used, which means that the connection strength between the connection portion 1 and the handle 2 can be strengthened.

When the foregoing is directed to the embodiments of the present invention, other or further embodiments of the present invention can be designed without violating its basic scope, and its basic scope is defined by the following patent application scope. Although the present invention is explained in terms of related preferred embodiments, this does not constitute a limitation on the present invention. It should be noted that those skilled in the art can construct many other similar embodiments based on the idea of the present invention, and these are all within the protection scope of the present invention.

Claims (5)

A tool device using a blow-molded grip combination blade, comprising: a grip and a connection portion, a radial cutout formed at an open end of the connection portion, and two abutment surfaces connecting the radial cutout, and The grip and its connecting portion are formed by blow molding; a blade has a knife portion, two coupling holes and a tooth portion, the knife portion has two abutment surfaces connecting the tooth portion, and the tooth portion has a plurality of axes arranged on both sides Bite the teeth and make the teeth of the blade inserted into the radial cut of the connection portion when the connection portion of the handle is blow-molded, and clamp the connection portion and the tooth portion of the blade with an auxiliary jig to make it The connecting portion is deformed by the clamping force of the auxiliary jig and enters between the plurality of axial bites and into the two coupling holes, so that the two abutment surfaces of the radial cutout abut the two abutment surfaces to be firmly combined, and wait until After cooling, the auxiliary jig is removed, so that the tooth portion can be completely and firmly fixed to the connecting portion of the handle. A tool device using a blow-molded handle to combine blades includes: a blow-molded handle; an injection-molded connection portion; an open end of the connection portion provided with a radial cut; and a blade having A knife portion and a tooth portion; wherein the inside of the connecting portion has at least one barb block, one end of the handle has a convex portion, and a barb ring is provided on the outer side wall of the convex portion, and the convex portion is inserted into the inside of the connecting portion, and Each barb block and the barb loop are fastened and fixed to each other; at the same time, the tooth portion of the blade is inserted into a radial cut of the connection portion. A tool device using a blow-molded handle to combine blades includes: a blow-molded handle, one end of the handle forms a receiving portion, and a barb portion is formed in the receiving portion; An injection-molded connection part, the open end of the connection part is provided with a radial cutout, and a barb block is formed on the other side of the connection part; and a blade, which has a knife part and a tooth part; When the connecting part is placed in the accommodating part of the handle, its barb block will be fixed on the barb part of the handle and be fastened to each other; and the tooth part of the blade is inserted into the radial cut of the connecting part, so that the tooth part and the The inner wall surface of the radial cut is engaged and fixed. According to the tool device of any one of claims 1, 2 and 3 of the scope of the patent application, the blow molding handle combination blade is used for the tool device, wherein the tooth portion is inclined toward the blade portion and outward. A tool combination device includes: a connecting portion having a radial cut at an open end; a grip handle that is welded to the connecting portion through ultrasonic thermal fusion; and a blade inserted into the connecting portion and fixed by a radial cut And the inner side wall of the connecting portion has an inner concave ring groove and an inner convex ring, the inner convex ring is arranged adjacent to the grip, the inner concave ring groove is adjacent to a side of the inner convex ring away from the handle, and the grip The end of the handle adjacent to the connecting portion has a convex portion, and an outer side ring of the convex portion is provided with a snap convex ring and a snap groove, the snap convex ring is disposed adjacent to the connection portion, and the snap groove is adjacent to the The side of the buckle convex ring away from the connecting portion, the inner concave ring groove is used for the buckle convex ring to be fastened and fixed, and the buckle groove is used for the inner convex ring to be fastened and fixed.