Hook for surface treatment

Abstract

To provide a hook for use in surface treatment, enabling a worker to easily attach a treated object to a fixing tool, and capable of preventing a treated object held by a hook from being detached therefrom due to agitation of a chemical solution and from overlapping each other in a chemical solution.SOLUTION: A hook 1 for use in surface treatment, holding a treated object A in a state of being inserted to a hole h formed on the treated object A when surface treatment is applied to the treated object A, comprises a reverse U-shaped hook unit 2 to be hung on a fixing tool B, and a rectangular holder 3 for holding the treated object A by being inserted to the hole h formed on the treated object A. The holder 3 having a partial opening (a) at the rectangular upper side, is characterized in that a plane α including the reverse U-shaped hook unit 2 and a plane β including the rectangular holder 3 are formed to intersect approximately at right angles.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a hook for surface treatment used when performing surface treatment on an object to be processed.

Background Art

[0002] When performing a process involving surface treatment such as surface painting or penetrant inspection on an object to be processed such as an aluminum plate, as a pretreatment, the object to be processed may be attached to a fixture such as a processing basket. In that case, conventionally, an aluminum wire or the like passed through a hole formed in the object to be processed may be tied to the mesh of the lid of the processing basket, which is a fixture, to attach the object to be processed to the fixture.

[0003] Also, an S-shaped hook such as the hanger for electroplating described in Patent Document 1 may be used. In this case, one end side of the S-shaped hook is passed through a hole in the object to be processed, and the other end side is hooked to a fixture (for example, a processing basket) to attach the object to be processed to the fixture.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, when tying an object to be processed to a fixture such as a processing basket with an aluminum wire or the like, if the number of objects to be processed is large, the tying work can be very troublesome. Also, the tying method may vary depending on the object to be processed and may require skill. Also, when removing the object to be processed after processing, the aluminum wire or the like is often not discarded but cut with nippers or the like.

[0006] In this regard, if an S-shaped hook is used, the operations of attaching the hook to a fixture or passing it through a hole in the object to be processed can be performed relatively easily. Also, even a person who is not skilled in the operations such as attaching the object to be processed to the fixture via the hook can perform them. Further, since the S-shaped hook can be repeatedly used, the amount of metal used as the fixture for the object to be processed can be reduced as compared with the case of the disposable aluminum wire or the like described above.

[0007] However, when an S-shaped hook is used, if the chemical solution in the processing tank in which the object to be processed is immersed is stirred, the object to be processed may come off the S-shaped hook due to the flow of the chemical solution. Also, when a plurality of objects to be processed are simultaneously immersed in the chemical solution, as shown in FIG. 6, the ends of the objects to be processed A held by the S-shaped hook 100 may overlap each other, and the chemical solution may not sufficiently reach the overlapping portion of the object to be processed A (the portion indicated by O in the figure).

[0008] The present invention has been made in view of the above points, and an object thereof is to provide a hook for surface treatment that facilitates attachment of an object to be processed to a fixture and prevents the object to be processed held by the hook from coming off the hook or overlapping in the chemical solution due to stirring of the chemical solution.

Means for Solving the Problems

[0009] In order to solve the above problems, an embodiment of the present invention is a hook for surface treatment that holds an object to be processed in a state of being inserted through a hole provided in the object to be processed when performing surface treatment on the object to be processed, It is formed in a shape where a single rod is bent, an inverted U-shaped key portion for engaging with a fixture, and a rectangular holding portion for being inserted through a hole provided in the object to be processed and holding the object to be processed, and includes the holding portion has a notch in the rectangular upper side portion, the surface including the inverted U-shaped key portion and the surface including the rectangular holding portion are substantially perpendicularand, the reverse U-shaped key portion sandwiches the surface including the holding portion It is formed as follows.

[0010] Further, the hook for surface treatment is preferably formed of the same metal as the metal constituting the object to be treated. Further, the hook for surface treatment is preferably formed of A5052 aluminum alloy. Also, for the hook for surface treatment, it is preferable that the upper and lower sides of the rectangular shape are substantially perpendicular to the surface including the key portion.

Advantages of the Invention

[0011] According to the present invention, it becomes possible to easily attach an object to be treated to a fixture, and to prevent the object to be treated held by the hook from coming off the hook or overlapping in the chemical solution due to agitation of the chemical solution.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Modes for Carrying Out the Invention

[0013] Hereinafter, embodiments of the hook for surface treatment according to the present invention will be described with reference to the drawings. FIG. 1 is a front view showing the configuration of the hook for surface treatment according to the present embodiment, and FIG. 2 is a side view.

[0014] In the following, the upper, lower, horizontal directions, etc. in the states of FIGS. 1 and 2 will be described as the upper, lower, horizontal directions, etc. of the hook 1 for surface treatment. In the following, the case where the fixture is the mesh-like lid of the treatment basket will be described, but the present invention is not limited to that case.

[0015] The hook 1 for surface treatment according to the present embodiment is a jig for holding an object to be treated when performing surface treatment on the object to be treated. The hook 1 for surface treatment has a shape like a single rod bent in various ways. Although expressions such as bending are also used below, this is an expression for explaining the shape of the hook 1 for surface treatment and does not represent the manufacturing method.

[0016] The hook 1 for surface treatment is provided with a key portion 2 on one end side (the upper portion in the figure), and a holding portion 3 is provided on the other end side (the lower portion in the figure). The key portion 2 has a shape in which one end side of the hook 1 for surface treatment is bent into an inverted U shape (an inverted U shape with the top and bottom reversed).

[0017] That is, the key portion 2 is formed in a state where the upward upper end side of the rod-shaped hook 1 for surface treatment is bent downward in a U-turn manner. And, for example, as shown in FIG. 5 described later, by hooking the key portion 2 (that is, the inverted U-shaped bent portion) on the fixture B, the hook 1 for surface treatment can be hooked on the fixture B.

[0018] The holding portion 3 has a shape in which the other end side of the hook 1 for surface treatment (the side opposite to the side where the key portion 2 is provided) is bent into a rectangular shape. However, the holding portion 3 is not a closed rectangle, but is formed to have a notch a in the upper side portion of the rectangular shape. That is, the holding portion 3 is formed in a state where three portions of the downward lower end side of the rod-shaped hook 1 for surface treatment are each bent 90 degrees in the same direction, and in a state where the upper side portion of the rectangular shape has a notch a.

[0019] On the one hand, as shown in FIG. 3, the hook 1 for surface treatment is formed such that the surface α including the reverse U-shaped key portion 2 and the surface β including the rectangular holding portion 3 are substantially perpendicular to each other. That is, in the hook 1 for surface treatment, the key portion 2 and the holding portion 3 are in a state of being twisted approximately 90 degrees with respect to each other.

[0020] Next, the operation of the hook 1 for surface treatment according to the present embodiment will be described. As shown in FIG. 1, the holding portion 3 of the hook 1 for surface treatment according to the present embodiment is configured such that three locations on the downward lower end side of the rod-shaped hook 1 for surface treatment are bent 90 degrees in the same direction, and is configured to have a notch a in the upper side portion of the rectangular shape.

[0021] Therefore, as shown in FIG. 4, with the processed object A provided with the hole h turned upside down, in that state, the tip 3a of the upper side portion of the rectangular holding portion 3 is passed through the hole h of the processed object A. Then, the processed object A is pulled around to the lower side portion of the holding portion 3 and attached. In the present embodiment, in this way, the processed object A can be engaged with the holding portion 3. And the holding portion 3 of the hook 1 for surface treatment can hold the processed object A in a state of being inserted through the hole h provided in the processed object A.

[0022] And in the present embodiment, as shown in FIG. 4, the key portion 2 of the hook 1 for surface treatment in a state where the processed object A is held by the holding portion 3 is hooked and engaged with the fixture B. Alternatively, the processed object A is engaged and suspended and held on the holding portion 3 of the hook 1 for surface treatment in a state where the key portion 2 is hooked and engaged with the fixture B, as shown in FIG. 4.

[0023] And in that state, for example, the mesh-like lid of the treatment basket, which is the fixture B, is rotated downward and closed. In the present embodiment, in this way, as shown in FIG. 5, the processed object A can be immersed in a chemical solution (not shown) in a state of being held by the hook 1 for surface treatment. Note that the relative sizes of the surface treatment hook 1 and the object to be treated A in FIGS. 4 and 5 do not necessarily reflect the actual situation.

[0024] Thus, in the surface treatment hook 1 according to this embodiment, the surface treatment hook 1 can be engaged with the fixture by hooking the key portion 2 on the fixture B, and the object to be treated A can be suspended and held by inserting the holding portion 3 through the object to be treated A. Therefore, by using the surface treatment hook 1 according to this embodiment, it becomes possible to easily attach the object to be treated A to a fixture B such as a treatment basket.

[0025] Also, when removing the object to be treated A from the surface treatment hook 1, contrary to the case of FIG. 4, the object to be treated A cannot be removed from the surface treatment hook 1 unless it is pulled upward from the notch a with the object to be treated A suspended and held by the holding portion 3 turned upside down. This operation can be easily performed when the operator removes the object to be treated A from the surface treatment hook 1.

[0026] Therefore, by using the surface treatment hook 1 according to this embodiment, not only the attachment of the object to be treated A to the fixture B such as a treatment basket but also the removal can be easily performed. Therefore, operations such as attaching the object to be treated A to the fixture B via the surface treatment hook 1 can be performed not only by skilled workers but also by those who are not skilled.

[0027] Also, when the object to be treated A suspended and held by the surface treatment hook 1 is immersed in a chemical solution and stirred, the possibility that the object to be treated A will be turned upside down is extremely small. Therefore, if the holding portion 3 of the surface treatment hook 1 is configured to have a notch a in the upper side portion of the rectangular shape as in this embodiment, it becomes possible to prevent the object to be treated A held by the surface treatment hook 1 from coming off the surface treatment hook 1 due to the stirring of the chemical solution.

[0028] On the one hand, as shown in FIG. 3, the hook 1 for surface treatment according to this embodiment is formed such that the surface α including the reverse U-shaped key portion 2 and the surface β including the rectangular holding portion 3 are substantially perpendicular to each other. That is, the key portion 2 and the holding portion 3 are in a state of being twisted approximately 90 degrees with respect to each other. For example, when using an S-shaped hook 100 as shown in FIG. 6, since the surface of the object A to be treated is substantially parallel to the extending direction of the fixture B, the ends of the object A held by the S-shaped hook 100 may overlap each other.

[0029] However, since the key portion 2 and the holding portion 3 of the hook 1 for surface treatment of this embodiment are in a state of being twisted approximately 90 degrees with respect to each other as described above, as shown in FIG. 5, the surface of the object A to be treated is held by the hook 1 for surface treatment so as to be substantially orthogonal to the extending direction of the fixture B. Therefore, it is possible to prevent the ends of the object A held by the hook 1 for surface treatment from overlapping each other.

[0030] As described above, according to the hook 1 for surface treatment according to this embodiment, the key portion 2 of the hook 1 for surface treatment is hooked and engaged with the fixture B. Further, the holding portion 3 of the hook 1 for surface treatment is inserted into the hole h provided in the object A to be treated, and the object A to be treated is suspended and held by the holding portion 3. In this way, it is possible to easily attach the object A to be treated to the fixture B via the hook 1 for surface treatment. Also, it is possible to easily remove the object A from the fixture B.

[0031] Further, according to the hook 1 for surface treatment according to this embodiment, the holding portion 3 is configured in a rectangular shape having a notch a. Therefore, it is possible to prevent the object A held by the hook 1 for surface treatment from coming off the hook 1 for surface treatment due to the agitation of the chemical solution when the object A held by the hook 1 for surface treatment is immersed in the chemical solution and agitated.

[0032] Furthermore, according to the hook 1 for surface treatment according to the present embodiment, the surface α including the reverse U-shaped key portion 2 and the surface β including the rectangular holding portion 3 are formed so as to be substantially perpendicular. That is, the key portion 2 and the holding portion 3 are configured to be in a state where they are twisted by approximately 90 degrees with respect to each other. Therefore, it is possible to prevent the ends of the workpiece A held by the hook 1 for surface treatment from overlapping each other, and it is possible to spread the chemical solution over the entire workpiece A.

[0033] If the metal constituting the hook 1 for surface treatment is a different metal from the metal constituting the workpiece A, there is a possibility of electrolytic corrosion due to the chemical solution that has entered between the holding portion 3 of the hook 1 for surface treatment and the workpiece A. Therefore, there is a risk that the portion of the hole h of the workpiece A and the holding portion 3 of the hook 1 for surface treatment will corrode. Therefore, the hook 1 for surface treatment is preferably formed of the same metal as the metal constituting the workpiece A.

[0034] Among aluminum materials, the A5052 aluminum alloy is difficult to deform. Therefore, when the workpiece A is made of aluminum or an aluminum alloy, the hook 1 for surface treatment is preferably formed of the A5052 aluminum alloy. It should be noted that the present invention is not limited to the above-described embodiments and the like, and it goes without saying that the present invention can be appropriately changed without departing from the gist of the present invention.

Explanation of reference numerals

[0035] 1 Hook for surface treatment 2 Key portion 3 Holding portion A Workpiece a Notch B Fixture h Hole α Surface including key portion β Surface including holding portion

Claims

1. When performing surface treatment on the surface of an object to be treated, in a surface treatment hook that holds the object to be treated while being inserted into a hole provided in the object to be treated, It is formed in the shape of bending a single rod, An inverted U-shaped key portion for engaging with a fixture, A rectangular holding portion for being inserted into a hole provided in the object to be treated and holding the object to be treated, and is provided with, The holding portion has a notch in the upper side portion of the rectangular shape, The surface including the inverted U-shaped key portion and the surface including the rectangular holding portion are substantially at a right angle, The surface treatment hook is characterized in that the inverted U-shaped key portion is formed so as to sandwich the surface including the holding portion.

2. The surface treatment hook according to claim 1, wherein it is formed of the same metal as the metal constituting the object to be treated.

3. The surface treatment hook according to claim 1 or claim 2, wherein it is formed of A5052 aluminum alloy.

4. The surface treatment hook according to claim 1, wherein the upper side portion and the lower side portion of the rectangular shape are substantially at a right angle to the surface including the key portion.

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