TW201827179A - Tool assembling device capable of strengthening the connection strength between a connecting portion and a handle - Google Patents

Abstract

The present invention discloses a tool assembling device which comprises a connecting portion, a handle and a blade; wherein the connecting portion can be formed with a radial slit at one end, and connected and fixed by inserting the blade into the radial slit of the connecting portion. The connecting portion and the handle can also be integrally molded through blow molding, or manufactured by injection molding and the handle is manufactured by blow molding, or ultrasonically welded, which not only achieves the effect of easy assembly and convenient manufacture, but also shortens manufacturing time and saves material, thereby reducing the cost. Furthermore, detachment of the connecting portion from the handle caused by excessive force exerted while using the blade can be avoided, which strengthens the connection strength between the connecting portion and the handle.

Description

Tool combination device

The present invention relates to the field of a tool, and more particularly to a tool assembly for a putty knife.

Press, " putty knife" is a blade used in construction engineering to remove the residual paint on the wall. Because the cementer uses it very frequently and has a large force, the structure between the blade and the grip of the cutter should have a special Design, and the conventional putty knife structure is attached to the upper and lower clips of the blade body, and is fixed by rivets through the upper clip, the blade body and the lower clip, but such a structure has The following shortcomings.

Firstly, in the above structure, after the rivet is used for a long time, it is easy to loosen. This is because the clamping force is mainly at the rivet, and is not the contact of the surface, so it is loosened by the lateral thrust; Since most of the upper and lower clips are made of wood, the hardness is high, so when the force is applied to the cutter for a long time, the components are easily separated from each other.

The conventional putty knife has another structure, mainly consisting of a hard plastic grip, which is directly combined with the handle (melting) of the blade during injection molding, so that a relatively stable structure of the handle can be obtained, but its implementation is also There are disadvantages.

First of all, since the shank should have a certain thickness for easy gripping, the thickness of the shank is longer after it is combined with the blade body, that is, the manufacturing time of the product is too long, so that the unit cost is increased; The connection between the handle and the blade is still the capacity It is easy to cause the components to detach from each other and strengthen the connection strength between the shank and the blade. Moreover, the shank is made of hard plastic, and the material is consumed more, resulting in waste, especially in mass production; It is a planed surface treatment. If it is placed in the process of combining the mold with the hard plastic, it will often cause scratches (marks) caused by the friction between the mold and the mold. Finally, to increase the production and make the mold fast. Cooling, using water as heat dissipation, the whole body of the tool is immersed in water, and the medium and high temperature are re-entered into cold water, which is easily oxidized and rusted.

In order to solve the above problems, an object of the present invention is to provide a tool assembly device which is integrally formed by a blow molding by a joint portion and a handle, or a joint portion is formed by injection molding and the handle is blow molded. In addition, the connection portion and the handle are ultrasonically welded, etc., which not only can achieve the assembly and the convenience of manufacturing, thereby shortening the manufacturing man-hour and saving materials, thereby reducing the cost; further, the blade can be further avoided. Excessive force exerts a condition that the connecting portion is separated from the grip, which means that the connection strength between the connecting portion and the grip can be strengthened.

In order to achieve the above object, the present invention provides a tool assembling device comprising a connecting portion and formed with a radial slit; a handle formed integrally with the connecting portion by blow molding; and a blade at the connecting portion The radial slit inserted into the connecting portion during blow molding is clamped by an auxiliary jig, and after being cooled, 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 blade portion and a tooth portion, and one end of the blade portion is coupled to the tooth portion, the tooth portion The radial slit is inserted into the connecting portion, and the tooth portion is fixed by being engaged with an inner wall surface of the radial slit; the tooth portion is inclined toward the blade portion and outward.

In a second embodiment of the present invention, the connecting portion is made by injection molding, and the handle is made by blow molding; the first end of the connecting portion has at least one barb block, and the handle is One end has a convex portion, and the outer side wall ring of the convex portion is provided with a barb ring, the convex portion is inserted into the first end of the connecting portion, and the at least one barb block and the barb ring are mutually hooked and fixed; The blade has a blade portion and a tooth portion, and one end of the blade portion is coupled to the tooth portion, the tooth portion is inserted into the radial slit of the connecting portion, and the tooth portion is engaged with an inner wall surface of the radial slit to be fixed; The teeth are inclined toward the blade and outward.

In a third embodiment of the present invention, a handle formed by blow molding, one end of the handle forms a receiving portion, and a barb portion is formed in the receiving portion; and another joint portion is formed by injection molding. The open end of the connecting portion is provided with a radial slit, and the other side of the connecting portion is formed with a barb block; and a blade has a blade portion and a tooth portion; thus, the connecting portion can be placed in the handle When the receiving portion is inside, the barb block is fastened on the barb block of the handle and is fastened to each other; and the tooth portion of the blade is inserted into the radial slit of the connecting portion, so that the tooth portion engages with the inner wall surface of the radial slit And fixed.

In a fourth embodiment of the present invention, the connecting portion is connected to the handle by ultrasonic fusion welding; the inner side wall of the first end of the connecting portion has a concave ring groove and an inner convex ring. The inner convex ring is disposed adjacent to the handle, the inner concave ring groove abuts the side of the inner convex ring away from the handle, the handle has a convex portion adjacent to one end of the connecting portion, and the outer side of the convex portion is ring-shaped a latching collar and a latching recess are disposed adjacent to the connecting portion, the latching recess abutting a side of the latching lug away from the connecting portion, the recessed ring slot is for the card The buckle ring is snap-fitted, and the snap groove is configured to be fastened by the inner ring.

100-103‧‧‧Tool combination device

1‧‧‧Connecting Department

13‧‧‧ radial incision

14‧‧‧barb block

15‧‧‧ concave ring groove

16‧‧‧Inner ring

2‧‧‧Handle

21‧‧‧ convex

22‧‧‧ Barb ring

23‧‧‧Snap collar

24‧‧‧Snap groove

25‧‧‧ 容部

26‧‧‧ Barbs

3‧‧‧blade

31‧‧‧Knife Department

32‧‧‧ teeth

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing the appearance of a first embodiment of the tool assembling device of the present invention.

Fig. 2 is a partially enlarged sectional view showing the first embodiment of the tool assembling device of the present invention.

Figure 3 is an exploded perspective view showing a second embodiment of the tool assembling device of the present invention.

Figure 4 is a cross-sectional view showing the second embodiment of the tool assembling device of the present invention.

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

Figure 6 is a cross-sectional enlarged schematic view showing the third embodiment of the tool assembling device of the present invention.

Figure 7 is a perspective view showing a fourth embodiment of the tool assembling device of the present invention.

Figure 8 is a partially enlarged cross-sectional view showing the fourth embodiment of the tool assembling device of the present invention.

Referring to FIGS. 1 and 2 together, the tool assembly apparatus 100 of the present invention includes a handle 2 having a connecting portion 1 and a blade 3, wherein the handle 2 is blow molded.

And the connecting portion 1 simultaneously forms a radial slit 13 at the time of blow molding.

Please refer to FIG. 1 and FIG. 2, which are related drawings of the first embodiment of the present invention; in the first embodiment of the tool assembling device 100 of the present invention, the connecting portion 1 and the handle 2 are integrally molded by blow molding.

The blade 3 has a blade portion 31 and a tooth portion 32. One end of the blade portion 31 is connected to the tooth portion 32, and the tooth portion 32 is inserted into the radial slit 13 of the connecting portion 1, and the tooth portion 32 faces the blade portion 31 and faces outward. Tilting, so that the tooth portion 32 is fixed by being engaged with an inner wall surface of the radial slit 13; wherein the blade 3 is inserted into the radial slit 13 of the connecting portion 1 of the grip 2 when the grip 2 is blow molded, and then an auxiliary treatment With the figure (not shown, this is a common fixture, so it will not be described again), the connecting portion 1 and the tooth portion 32 of the blade 3 are clamped to be firmly combined, and the auxiliary fixture is removed after being cooled down. The toothing 32 is fixed completely and securely to the connecting portion 1 of the grip 2.

According to the above configuration, not only is the assembly simple, but also the joint portion 1 and the grip 2 are integrally molded by blow molding during production, so that it is not only convenient to manufacture, but also can save a large amount of plastic materials and reduce costs; The auxiliary jig can completely or firmly fit or fix the tooth portion 32 of the blade 3.

Referring to FIG. 3 to FIG. 4 again, there is shown a related example of the second embodiment of the present invention; in the second embodiment of the tool assembling device 101 of the present invention, the connecting portion 1 is made by injection molding, and the handle is 2 is made by blow molding, and the two are different components.

In addition, the inside of the connecting portion 1 has at least one barb block 14 (this embodiment is illustrated by two figures, but not limited thereto), and one end of the handle 2 has a convex portion 21, and the outer side of the convex portion 21 The wall ring is provided with a barb ring 22, and the convex portion 21 is inserted into the interior of the connecting portion 1, and is fastened to each other by the barbs 14 and the barb ring 22.

At the same time, the blade 3 has a blade portion 31 and a tooth portion 32. One end of the blade portion 31 is connected to the tooth portion 32, and the tooth portion 32 is inserted into the radial slit 1 of the connecting portion 1. 3, since the tooth portion 32 is inclined toward the blade portion 31 and outward, the tooth portion 32 is engaged with an inner wall surface of the radial slit 13 and fixed.

With the above structure, since the connecting portion 1 is made by injection molding, the grip 2 is made by blow molding, which is not only convenient to manufacture, but also saves materials to reduce cost, and further achieves the effect of simple assembly; Further, it is possible to prevent the force of the blade 3 from being excessively applied to cause the connection portion 1 to be detached from the grip 2, that is, the connection strength between the joint portion 1 and the grip 2 can be enhanced.

Referring to FIG. 5 to FIG. 6 again, there is shown a related example of the third embodiment of the present invention. In the third embodiment of the tool assembling device 102 of the present invention, the connecting portion 1 is also made by injection molding, and the grip is The shank 2 is made by blow molding, and the two are different members.

Furthermore, one side of the connecting portion 1 is formed with a barb block 14 (this embodiment is illustrated by two figures, but not limited thereto), and the connecting portion 1 forms a radial slit 13; the handle A receiving portion 25 is formed at one end of the second portion, and a barb portion 26 is formed in the receiving portion 25, so that the connecting portion 1 can be placed in the receiving portion 25 of the handle 2, and the barb block 14 thereof The hooks 26 are fastened to the barbs 26 of the handle 2 and are fastened to each other.

At the same time, the blade 3 has a blade portion 31 and a tooth portion 32. One end of the blade portion 31 is connected to the tooth portion 32, and the tooth portion 32 is inserted into the radial slit 13 of the connecting portion 1, and since the tooth portion 32 faces the blade portion 31 and faces The outer portion is inclined, so that the tooth portion 32 is engaged with the inner wall surface of the connecting portion 1 of the radial slit 13 to be tightly fitted.

With the above structure, since the connecting portion 1 is made by injection molding, The handle 2 is made by blow molding, which not only facilitates manufacturing, but also saves materials to reduce cost, and further achieves the effect of simple assembly; furthermore, it can further avoid the excessive force applied to the blade 3 to cause the connection portion. 1 The situation in which the grip 2 is detached occurs, that is, the connection strength between the connecting portion 1 and the grip 2 can be strengthened.

Finally, please refer to FIG. 7 and FIG. 8 again, showing a related example of the fourth embodiment of the present invention; in the fourth embodiment of the tool assembling device 103 of the present invention, the connection manner of the connecting portion 1 and the grip 2 It is a fusion fusion with ultrasonic heat.

Furthermore, the inner side wall of the connecting portion 1 has a concave ring groove 15 and an inner convex ring 16, and the inner convex ring 16 is disposed adjacent to the grip 2, and the inner concave ring groove 15 abuts the side of the inner convex ring 16 away from the grip 2. The end of the handle 2 adjacent to the connecting portion 1 has a convex portion 21, and the outer side ring of the convex portion 21 is provided with a snap ring 23 and a latching groove 24, and the snap ring 23 is disposed adjacent to the connecting portion 1, the card The latching groove 24 abuts the side of the latching ring 23 away from the connecting portion 1 , and the recessed ring groove 15 is engaged and fixed by the latching ring 23 , and the latching recess 24 is engaged and fixed by the inner ring 16 .

Therefore, with the above structure, since the connection mode of the connecting portion 1 and the grip 2 is ultrasonically welded, ultrasonic welding can be performed once the assembly is completed, which is not only convenient for manufacturing, but also saves materials to reduce cost and further shortens. In addition, it is further possible to avoid the occurrence of excessive force of the blade 3 when the blade 3 is used, and the connection portion 1 is detached from the grip 2, that is, the connection strength between the connecting portion 1 and the grip 2 can be enhanced.

While the foregoing is directed to the various embodiments of the present invention, further or further embodiments of the present invention may be devised without departing from the basic scope thereof, and the basic scope thereof is defined by the following claims. Although the present invention has been explained in connection with the preferred embodiments, it is not intended to limit the invention. It should be stated that A person skilled in the art can construct many other similar embodiments in accordance with the teachings of the present invention, which are all within the scope of the present invention.

Claims (5)

A tool assembly device comprising: a handle having a connecting portion, an open end of the connecting portion and forming a radial slit, and the handle and the connecting portion thereof are blow molded; a blade having a knife portion and a tooth portion And inserting the tooth portion of the blade into the radial slit of the connecting portion when the connecting portion of the handle is blow-molded, and clamping the connecting portion and the tooth portion of the blade with an auxiliary jig to firmly bond the same. And after cooling, the auxiliary fixture is removed, so that the tooth portion is completely and firmly fixed to the connection portion of the handle. A tool assembly device comprising: a blow molded handle; an injection molded joint, an open end of the joint and a radial slit; and a blade having a knife portion and a tooth portion The inside of the connecting portion has at least one barb block, one end of the handle has a convex portion, and the outer side wall ring of the convex portion is provided with a barb ring, the convex portion is inserted into the inner portion of the connecting portion, and the barbs and the barb ring are mutually The hook is fixed; at the same time, the tooth portion of the blade is inserted into the radial slit of the joint. A tool assembly device comprising: a blow molding handle, one end of the handle forms a receiving portion, and a barb portion is formed in the receiving portion; a joint portion formed by injection molding, and an open end of the connecting portion And a radial slit is formed, and the other side of the connecting portion is formed with a barb block; and a blade has a knife portion and a tooth portion; In this way, when the connecting portion is placed in the receiving portion of the handle, the barb block is fastened on the barb block of the handle and is fastened to each other; and the tooth portion of the blade is inserted into the radial slit of the connecting portion. The teeth are fixed by being engaged with the inner wall surface of the radial slit. The tool assembly according to any one of claims 1, 2, and 3, wherein the tooth portion is inclined toward the blade portion and outward. A tool assembly device comprising: a connecting portion having a radial slit at an open end thereof; a handle fused to the connecting portion by ultrasonic fusion; and a blade inserted into a radial slit of the connecting portion And the inner side wall of the connecting portion has a concave ring groove and an inner convex ring disposed adjacent to the handle, the inner concave ring groove abutting the side of the inner convex ring away from the handle, the grip One end of the handle adjacent to the connecting portion has a convex portion, and the outer side ring of the convex portion is provided with a snap ring and a snap groove, and the snap ring is disposed adjacent to the connecting portion, the snap groove is adjacent to the The snap ring is away from the side of the connecting portion, and the inner ring groove is fixedly engaged by the snap ring, and the snap groove is configured to be fastened by the inner ring.