TWI739396B - Tool of ratchet mechanism with excellent rust resistance - Google Patents

Abstract

The subject of the present invention is to provide a tool with a ratchet mechanism with excellent rust resistance. The present invention is a tool of a ratchet mechanism with excellent rust resistance. It is characterized by having a head with a ratchet mechanism, and a handle provided as a different body from the head, and a fitting is formed in the head Hole, the end of the handle part is fitted in the fitting hole, the fitting part of the head and the handle part is fixed by brazing, and the brazing material of the brazing is almost the whole of the fitting hole. filling.

Description

Tool of ratchet mechanism with excellent rust resistance

The present invention relates to a tool with a ratchet mechanism with excellent rust resistance.

The ratchet mechanism is a mechanism for unidirectionally restricting the direction of rotation with gears called ratchet teeth and pawls meshing with the ratchet teeth.

The ratchet teeth are different from ordinary gears in that the teeth are inclined in one direction. Therefore, when the ratchet teeth rotate in a certain direction, it can be easily rotated, but when the ratchet teeth rotate in the reverse direction, the pawl bites into the ratchet teeth, so the rotation of the ratchet teeth is restricted.

This kind of ratchet mechanism is used for various tools. Such a tool needs to rotatably house the ratchet teeth inside the tool. For example, a tool such as Patent Document 1 is known.

The tool of Patent Document 1 has a head and a handle integrally formed. Therefore, there is a problem that in order to form a space for accommodating the ratchet mechanism, it is difficult to cut metal having a long handle, etc., and processing at the time of manufacturing is difficult.

There is also a method of separately forming the head and the handle for easy processing. Fig. 6(a) shows the previously separately formed tool (1001), and the head (1100) and the handle (1200) are joined by welding.

When joining by welding, the base material is melted. Therefore, the head part (1100) and the handle part (1200) that become the base material may be deformed or poorly melted due to heat.

In addition, the joining by welding has technical problems in joining different kinds of metals, and it is difficult to combine the head (1100) and the handle (1200) with different materials.

Therefore, the material of the head (1100) needs to be selected according to the purpose, and the material of the handle (1200) is also selected suitable for the head (1100). Therefore, there is a problem of excessive or insufficient parts inventory and material inventory.

Fig. 6(b) shows the C-C section of Fig. 6(a). The metal (1500) of the base material melted by welding lacks fluidity and cools around it and returns to solid again. Therefore, as shown in Figure 6(b), the head (1100) and the handle (1200) The fitting part (1130) creates a gap.

In most cases, the previous tool (1001) is plated as a surface treatment at the final stage of manufacturing. During the plating process, pickling treatments such as pickling are performed, but at this time the acid solution flows into the gap of the fitting part (1130), and after the plating is dried, the acid solution flows out from the gap, causing rust.

When the previous tool (1001) is used in the field in rainy weather or for inspection and repair of water pipes, sometimes rainwater will flow into the gap between the space part (1120) and the fitting part (1130) containing the ratchet mechanism. rust.

Rust has the problem of causing poor operation of the tool or reducing the strength of the tool and shortening the life. [Prior Technical Literature] [Patent Literature]

[Patent Document 1] Utility Model Registration No. 3164453 Bulletin

[The problem to be solved by the invention]

The present invention has been accomplished in view of the above-mentioned problems, and particularly aims to provide a tool of a ratchet mechanism with excellent rust resistance as the subject. [Technical means to solve the problem]

One aspect of the present invention relates to a tool with a ratchet mechanism having excellent rust prevention properties that has the following characteristics: a head having a ratchet mechanism, and a handle portion provided as a different body from the head, and The head is formed with a fitting hole, the end of the handle is fitted into the fitting hole, the fitting part of the head and the handle is fixed by brazing, and the brazing material is spread over the insert Fill the substantially whole of the hole.

In another aspect of the tool of the ratchet mechanism with excellent rust resistance, the fitting hole penetrates from the outer periphery of the head to the space of the head for accommodating the ratchet mechanism.

According to the tool of the ratchet mechanism with excellent rust resistance in these aspects, the head and the handle are fixed by welding, and the welding material is filled in substantially the entirety of the fitting hole. Therefore, unlike the previous welding, there is no gap between the fitting part of the head and the handle, and there is no fear that liquids such as acidic solution or rainwater will flow into the gap, and the rust resistance is excellent.

In addition, the joint area between the head and the handle is increased in the joining by brazing compared to the previous joining by welding. Furthermore, compared with the metal of the base material melted by welding, the noodle used for brazing does not contain pinholes (bubbles). Therefore, since the joint area is increased and the content of pinholes is small, the joint between the head and the handle can be highly airtight and firm.

Furthermore, since the tool of the ratchet mechanism with excellent rust resistance joins the head and the handle by brazing, the possibility of the head and the handle being deformed by heat can be reduced.

Regarding another aspect of the tool of the ratchet mechanism with excellent rust resistance, the head and the handle are formed of different types of metals or alloys.

According to this aspect, the tool of the ratchet mechanism with excellent rust resistance can be joined even if the head and the handle are fixed by brazing. When the material of the head has been selected according to the purpose, the degree of freedom in the selection of the material of the handle is also wide, which can reduce the inventory of parts and materials.

Regarding another aspect of the tool of the ratchet mechanism with excellent rust resistance, the head is formed of the following metal selected from stainless steel, iron, aluminum, nickel, chromium, manganese, molybdenum, titanium, and niobium , Copper and zinc, or alloys containing one or more of these metals.

Regarding another aspect of the tool of the ratchet mechanism with excellent rust resistance, the handle portion is formed of the following metal selected from stainless steel, iron, aluminum, nickel, chromium, manganese, molybdenum, titanium, and niobium , Copper and zinc, or alloys containing one or more of these metals.

According to the tools of the ratchet mechanism with excellent rust resistance according to these aspects, the head and/or the handle can be formed of metal or alloy suitable for the purpose.

In another aspect of the present invention, the above-mentioned material of the tool of the ratchet mechanism with excellent rust resistance is silver solder.

Silver solder can be applied to a variety of metals and alloys. In addition, the silver solder has better wetting to the surface of the base material and strong strength, so it can also be used better.

In another aspect of the present invention, the above-mentioned material of the tool of the ratchet mechanism with excellent rust resistance is aluminum solder.

When at least any one of the head portion and the handle portion is aluminum or an alloy mainly composed of aluminum, aluminum solder can be preferably used when joining the head portion and the handle portion.

Another aspect of the present invention is a tool for a ratchet mechanism with excellent rust resistance, which is characterized by having a head with a ratchet mechanism, and the head has a space for accommodating the ratchet mechanism. The top plate part, the bottom plate part, and the side plate part. The side plate part is formed with at least one dewatering hole, and the dewatering hole is used to discharge the water accumulated in the space part.

Another aspect of the present invention is a tool of a ratchet mechanism with excellent rust resistance. In addition to the water holes of the side plate portion, the top plate portion and the bottom plate portion are also formed to drain water accumulated in the space portion. The water removal hole.

Regarding another aspect of the tool of the ratchet mechanism with excellent rust resistance, the water removal hole is formed in a sieve shape.

According to the tools of the ratchet mechanism with excellent rust resistance according to these aspects, the water removal hole is formed, so the rust resistance is excellent and the life of the tool can be prolonged. The water removal hole is used for draining and storing the ratchet wheel. The water of the space department of the organization. [Effects of Invention]

The invention can provide a tool with a ratchet mechanism with excellent rust resistance.

Next, the tool of the ratchet mechanism with excellent rust resistance of the present invention will be described in further detail with reference to the drawings.

In the present invention, "a tool with a ratchet mechanism" is not limited, and examples include ratchet wrenches, ratchet wrenches, and wire tighteners.

[Welding] Fig. 1 is a perspective view of a tool (1) of a ratchet mechanism (hereinafter referred to simply as tool (1)) with excellent rust prevention properties according to an embodiment of the present invention.

In this embodiment, as shown in Figure 1(a), the tool (1) includes a head (100) and a handle (200), and the head (100) and the handle (200) are formed as different bodies.

The handle (200) may also be provided with a grip (210) formed of synthetic resin or synthetic rubber.

A space (120) for accommodating the ratchet mechanism (110) is formed on the head (100). A part of the switching lever (111) for changing the rotation direction of the ratchet mechanism (110) can be accommodated in the space (120).

Fig. 1(b) is a cross-sectional view showing the A-A section of Fig. 1(a).

A fitting hole (130) for inserting and fitting the end of the handle (200) is formed in the head (100).

Here, the fitting hole (130) may penetrate (communicate) to the space (120) from the outer circumference of the head (100).

In this embodiment, after inserting the end of the handle (200) into the fitting hole (130) and fitting it, the head (100) and the handle (200) are fixed by brazing.

Furthermore, "brazing" is a joining method sometimes called brazing. This method uses an alloy with a lower melting point than the base material as the brazing material (300), without melting the base material Make splicing.

The noodle (300) has the characteristics of good "wetting" and easy to flow and spread on the surface of the base material.

Therefore, as shown in Figure 1(b), the noodle (300) fills the gap formed between the head (100) and the handle (200) in the fitting hole (130), and fits throughout The hole (130) is filled substantially as a whole. More preferably, the noodles (300) are filled throughout the entire fitting hole (130).

Therefore, it is possible to prevent liquids such as acidic solution or rainwater used in plating from flowing into the gap between the head (100) and the handle (200) in the fitting hole (130), and therefore the rust resistance is excellent.

Since the noodles (300) are well wetted and spread, compared with the previous joining by welding, the joint area of the head (100) and the handle (200) is increased. The increase of the joint area will disperse the load applied to the joint part, so the joint between the head (100) and the handle part (200) can be made firm.

Furthermore, the ferment (300) used in brazing has less pinholes (bubbles) than the metal (1500) of the previous base material melted by welding. The small content of pinholes (bubbles) will increase the strength of the noodles (300), so that the head (100) and the handle (200) can be firmly joined.

The joining by brazing can join base materials of different materials to each other. That is, in the tool (1) of this embodiment, as shown in Figure 2, the head (100a, 100b, 100c, 100d) and the handle (200a, 200b, 200c, 200d) can also be formed of different types of metals or alloys. . In addition, the head (100) may have different shapes according to the purpose of use.

Furthermore, in FIG. 2, the heads (100a, 100b, 100c, 100d) are respectively formed of iron (Fe), brass (Cu+Zn), aluminum (Al), and stainless steel (SUS). The handle portions (200a, 200b, 200c, 200d) are respectively formed of stainless steel (SUS), stainless steel (Fe+Cr), aluminum (Al), and iron (Fe).

According to the example in Figure 2, there are 3 types of heads (100a, 100b, 100c) with different materials and shapes, and 3 types of handles (200a, 200b, 200c) with different materials, so the heads (100a, 100b, 100c) There are 9 types of combinations with handles (200a, 200b, 200c). However, the combination of the head (100) and the handle (200) should not be limited to the example shown in FIG. 2. The head (100) and the handle (200) can also be made of other materials and/or shapes.

Even when the material of the head (100) has been selected according to the purpose, the degree of freedom in selecting the material of the handle (200) is wide. Therefore, the inventory of parts and materials can be reduced.

The head (100) may be formed of the following metals, which are selected from stainless steel (SUS), iron (Fe), aluminum (Al), nickel (Ni), chromium (Cr), manganese (Mn), molybdenum (Mo), titanium (Ti), niobium (Nb), copper (Cu) and zinc (Zn), or an alloy containing one or more of these metals.

The handle (200) may be formed of the following metals, which are selected from stainless steel (SUS), iron (Fe), aluminum (Al), nickel (Ni), chromium (Cr), manganese (Mn), molybdenum (Mo), titanium (Ti), niobium (Nb), copper (Cu) and zinc (Zn), or an alloy containing one or more of these metals.

That is, as an alloy forming the head (100) and/or the handle (200), stainless steel, brass, or the like can be used.

The head (100) and/or the handle (200) can be formed of metal or alloy suitable for the purpose of using the tool (1). For example, the head (100) is formed of a heavy and high-strength metal or alloy, and the handle (200) is formed of a slightly lower but lighter metal or alloy, thereby providing an easy-to-operate tool (1).

The noodle (300) is not limited, and silver solder can also be used. Silver solder is an alloy containing silver (Ag), and contains copper (Cu), zinc (Zn), cadmium (Cd), nickel (Ni), tin (Sn), and/or lithium (Li) as other components.

Silver solder can be applied to a variety of metals and alloys. In addition, the silver solder has better wetting to the surface of the base material and strong strength, so it can also be used better.

The noodle (300) is not limited, and aluminum solder can also be used. Aluminum solder is an alloy containing aluminum (Al), and contains manganese (Mn), iron (Fe), silicon (Si), zinc (Zn), copper (Cu), magnesium (Mg), chromium (Cr) and/or Titanium (Ti) and the like are used as other components.

Since aluminum forms an oxide film on the surface, it has the characteristics of poor wettability of the nipple (300). However, aluminum solder can maintain good wetting even when at least one of the head (100) and the handle (200) is aluminum or an alloy with aluminum as the main component. 100) It can be preferably used when it is engaged with the handle part (200).

[Dewatering hole] Fig. 3 is a perspective view of the head (100) of the tool (1) according to an embodiment.

In this embodiment, the head (100) is formed as a different body from the handle (200).

In addition, the head (100) has a top plate (101), a bottom plate (102), and a side plate (103).

The top plate part (101), bottom plate part (102) and side plate part (103) may be formed of the following metals, which are selected from stainless steel (SUS), iron (Fe), aluminum (Al), nickel (Ni), and chromium (Cr) , Manganese (Mn), Molybdenum (Mo), Titanium (Ti), Niobium (Nb), Copper (Cu) and Zinc (Zn), or an alloy containing one or more of these metals.

The top plate part (101), the bottom plate part (102) and the side plate part (103) can be formed of metal or alloy suitable for the purpose of using the tool (1).

The top plate part (101), the bottom plate part (102) and the side plate part (103) delimit a space part (120) in the head part (100) for accommodating the ratchet mechanism (110).

The head (100) is provided with a switching lever (111) for changing the rotation direction of the ratchet mechanism (110). A part of the switching rod (111) is accommodated in the space part (120). The front end of the switch lever (111) protrudes from the opening (112) formed in the side plate portion (103) to the outer circumference of the head (100). Therefore, the user of the tool (1) can manipulate the switching lever (111) to change the rotation direction of the ratchet mechanism (110).

At least one water removal hole (140) is formed on the side plate portion (103). Furthermore, the dewatering hole (140) is preferably formed separately from the opening (112).

For example, when the tool (1) is used in the field on rainy days or for inspection and repair of water pipes, liquids such as rainwater will flow into the space (120) from the opening (112). However, by forming such a water removal hole (140), the water accumulated in the space (120) can be discharged. In addition, the air permeability is improved, so it is easy to dry the space portion (120). Therefore, the anti-rust property of the tool (1) can be improved, and the life of the tool (1) can be prolonged.

Furthermore, it is preferable that at least one dewatering hole (140) is formed in the side plate part (103) so as to be located near the front end of the head part (100). Thereby, a water removal hole (140) is formed on the circumference of the ratchet mechanism (110) farthest from the opening (112), and therefore, the drainage and air permeability are further improved.

Fig. 4 is a perspective view of the head (100) of the tool (1) according to another embodiment.

Preferably, in addition to the water holes (140) of the side plate portion (103), water removal holes (140) are also formed in the top plate portion (101) and/or the bottom plate portion (102). A more preferable form is that in addition to the water holes (140) of the side plate portion (103), water removal holes (140) are also formed in the top plate portion (101) and the bottom plate portion (102).

One or more water removal holes (140) of the top plate part (101) or bottom plate part (102) can be formed.

By forming the dewatering holes (140) in the top plate part (101) and/or the bottom plate part (102), drainage and air permeability can be further improved.

The water removal hole (140) of the top plate part (101) and/or bottom plate part (102) is preferably within the circle defined by the ratchet mechanism (110) and is the sum of the top plate part (101) and/or bottom plate part (102) The corresponding positions of the circle are formed in plural. Furthermore, the water removal holes (140) are preferably formed on concentric circles at equal intervals within the circle.

Thereby, the drainage and air permeability of the space portion (120) are further improved. In addition, the ratchet mechanism (110) (ratchet teeth) can be dried efficiently, and the rust resistance of the ratchet mechanism (110) is further improved.

Fig. 5 is a perspective view of the head (100) of the tool (1) according to another embodiment.

As shown in Figure 5, at least a part of the dewatering holes (140) may be formed in a sieve shape, a mesh shape or a lattice shape.

Even if the dewatering holes (140) are made into a mesh-like, mesh-like, or grid-like shape, drainage and air permeability can be improved. In addition, by providing the water removal hole (140) in such a shape, the strength of the head (100) can be suppressed from decreasing.

The shape of the dewatering hole (140) is formed as a fan-shaped or rectangular opening in FIGS. 3, 4, and 5, but it should not be limited to this for understanding. For example, it may also be a circular, oval, or polygonal opening.

The head part (100) formed with the water removal hole (140) and the handle part (200) formed as a different body can be joined by the above-mentioned brazing.

By using brazing to join the head (100) formed with the water removal hole (140) and the handle (200), it is possible to complement each other to obtain more excellent rust resistance. [Industrial availability]

The present invention can provide a ratchet mechanism tool (ratchet wrench, ratchet wrench, wire tensioner, etc.) with excellent rust resistance.

1: Tools (tools) with ratchet mechanism 100: head 100a, 100b, 100c, 100d: head 101: top plate 102: bottom plate 103: side panel 110: Ratchet mechanism 111: Switch lever 112: Opening 120: Ministry of Space 130: Fitting hole 140: Dewatering hole 200: Handle 200a, 200b, 200c, 200d: handle 210: Grip 300: 釺 material 1001: previous tools 1100: head 1120: Ministry of Space 1130: Fitting part 1200: Handle 1500: Metal of the base material melted by welding

Fig. 1 (a) and (b) are perspective views showing a tool of a ratchet mechanism with excellent rust resistance according to an embodiment of the present invention. Fig. 2 is a perspective view showing an example of a head and a handle with different materials and shapes. Fig. 3 is a perspective view of the head of the tool of the ratchet mechanism with excellent rust resistance in one embodiment of the present invention. Fig. 4 is a perspective view of the head of the tool of the ratchet mechanism with excellent rust resistance in another embodiment of the present invention. Fig. 5 is a perspective view of the head of the tool of the ratchet mechanism with excellent rust resistance in another embodiment of the present invention. Figure 6 (a) and (b) are perspective views showing the previous tool with a ratchet mechanism.

1: Tools (tools) with ratchet mechanism

100: head

110: Ratchet mechanism

111: Switch lever

120: Ministry of Space

130: Fitting hole

200: Handle

210: Grip

300: 釺 material

Claims (7)

A tool with a ratchet mechanism with excellent rust resistance, characterized by having: a head having a ratchet mechanism; and a handle part provided as a different body from the head; and an insert is formed in the head Fitting hole, the end of the handle part is fitted into the fitting hole, the fitting part of the head and the handle part is fixed by brazing, and the brazing material is filled in the fitting hole The method of burying the gap formed between the head and the handle is filled almost the entirety of the fitting hole. The tool of the ratchet mechanism with excellent rust resistance according to claim 1, wherein the fitting hole penetrates from the outer periphery of the head to the space of the head for accommodating the ratchet mechanism. According to claim 1 or 2, the tool of the ratchet mechanism with excellent rust resistance, wherein the head and the handle are formed of different kinds of metals or alloys. For the tool of the ratchet mechanism with excellent rust resistance of claim 1 or 2, wherein the head is formed of the following metal selected from stainless steel, iron, aluminum, nickel, chromium, manganese, molybdenum, titanium, niobium , Copper and zinc, or alloys containing more than one of these metals. For example, the tool of the ratchet mechanism with excellent rust resistance of claim 1 or 2, wherein the handle part is formed of the following metal, the metal is selected from stainless steel, iron, aluminum, nickel, chromium, manganese, A group consisting of molybdenum, titanium, niobium, copper and zinc or alloys containing one or more of these metals. Such as claim 1 or 2 of the tool with the ratchet mechanism with excellent rust resistance, wherein the above-mentioned nipper is silver solder. Such as claim 1 or 2 of the tool with a ratchet mechanism with excellent rust resistance, wherein the above-mentioned noodles are aluminum solders.

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