JPH073751U - Structure of masking cap - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] The structure of the masking cap used when masking components such as automobiles has a simple structure and good lockability. [Structure] A locking recess 3 is formed corresponding to an inclined conical portion 8 which is formed of a resin molding material such as high density polyethylene and which is fitted to the side peripheral wall surface 2 and has a small diameter of a masking component to be fitted. It has a structure that prevents slipping out. [Effect] The cap and the part to be masked are provided with the toughness, the dimensional stability and the impact resilience, and the locking recess provided on the side wall surface and corresponding to the inclined conical part of the part to be marked. Can be more securely attached and locked.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a masking cap, and more particularly to a structure of a masking cap that has a simple structure and has a good locking attachment property.

[0002]

[Prior art]

 For example, automobiles are made up of a large number of parts, whose production belongs to the general industry, and the main material is steel, but copper alloy, aluminum alloy, zinc alloy, plastic, paint, etc. Are used. The manufacturing work includes casting, forging, heat treatment, machining, sheet metal work, painting, and the like, and the work of masking component parts.

[0003]

[Problems to be solved by the device]

 In the past, when masking automobile components, a cylindrical cap made of plastic material has been used.Since it is generally made of synthetic resin material, it is oil- and water-resistant, so it is less likely to be contaminated and is not easily manufactured. Although it has advantages such as easy molding, for example, it is configured to form an annular recessed groove corresponding to the part where the body of the masking component has a small diameter so that it can be prevented from coming off. However, it is difficult to pull out the annular recessed groove even when it is inserted, and when pulling out and pulling out, especially when the center line for pulling out shifts. There is. Further, in the case where the enlarged diameter portion in the protruding state is formed at the lower edge portion of the opening of the cap rod, and the portion is to be locked and held in the abutting state, the enlarged diameter portion should be used when the cap is attached or detached. Although there is a point that it is easy to grip, in the form that the fitting action is performed only at the expanded diameter portion, if the fitting strength is made strong, it will prevent detachment, while if the design that is easy to insert, the expanded diameter portion gap is formed. However, there is a problem that the cap is easily removed during the masking work. The present invention is a cylindrical masking cap having one end open and the other end having a side end wall, wherein the cap is made of a resin molding material selected from polyethylene resin and the side circumference of the cap is large. On the wall surface, a locking recess is formed in the main body of the component to be fitted, which corresponds to the inclined conical portion beyond the step start end, which has a diameter smaller than the generatrix of the surrounding wall, to prevent slippage. It is intended to provide a structure of a masking cap which is a structure having a structure.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the structure of the masking cap of the present invention has a cylindrical shape having one end open and the other end having a side end wall, and the cap is selected from high density polyethylene resin or the like. It is made of a resin molding material and has water resistance, chemical resistance, toughness, abrasion resistance, abrasion resistance, etc., good workability, shape resistance and impact resilience. Is a structure in which a locking recess is formed to correspond to the inclined conical portion beyond the step start end that is smaller in diameter than the generatrix of the surrounding wall in the body of the component to be fitted. It will be as. The locking recess is formed at a location corresponding to the inclined conical portion beyond the step start end portion having a diameter smaller than the generatrix of the peripheral wall in the main body of the component to be masked, and the cap is attached to the main body of the component. Although it is brought into a fixed state by being slidably brought into contact with the step start end, it is preferable that at least two locking recesses are formed. Further, in order not to hinder the operation of inserting and removing the cap and to more securely fix the cap, the locking recesses are formed as a pair facing each other on the annular ring line at the same height of the side peripheral wall surface. It is preferable to form it.

[0005]

[Action]

 The masking cap of the present invention has a cylindrical shape with one end open and the other end wall at the other end, and is made of a resin molding material selected from polyethylene resin or the like, and is robust and strong in mounting. At the same time, the dimensional stability and the repulsive elasticity are brought into intimate contact with each other, and the opening end 9 is also fitted and abutted by the surface pressure. A locking concave portion is bored corresponding to the inclined conical portion beyond the step start end portion of the swinging component, and works so as to prevent slipping out in a locked and fixed state. Further, since the locking recess is provided corresponding to the inclined conical portion beyond the step start end of the body to be masked, the locking recess can be securely fixed even if it is not so deep. It can be put in a state, and when removing it, it works so that it can be removed with a simple work.

[0006]

【Example】

 The present invention will be described below with reference to the drawings. FIG. 5 is a front view of a conventional product, which has a configuration in which a side wall 12 has an annular perforated portion 11 formed in a constricted state. Although the installation portion 11 is provided so as to correspond to the small-diameter portion, even if the annular drilled portion 11 can be locked and fixed, if the adhesion is good, the insertion portion is particularly likely to be inserted. In addition, it requires a considerable amount of external force when it is detached, and cannot be easily removed. FIG. 6 is a front view of another conventional product, in which an enlarged diameter portion 14 having an inner diameter wider than that of the cap main body is formed at the opening end edge portion 13 at one end. As the state of abutting and fitting with the main body of the masking component, the surface pressure prevents the retainer from coming off. However, in this structure, although the fitting is easy, the abutting and fitting part is only one end, and the fitting holding force is not strong, so there is a drawback that it is difficult to mount it securely. It was

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention, FIG. 2 is a sectional explanatory view of a locking recess of the present invention, FIG. 3 is a sectional view taken along line AA of FIG. 1, and FIG. FIG. 4 is an explanatory view showing a usage state of the cap of the present invention. The masking cap 1 of the present invention uses a material of high density polyethylene (trade name, Mitsui Hi-Zex HD-PE) and has a cylindrical shape with one end open and the other end having a side end wall. An open end 9 is formed on the open side of one end. A locking recess 3 is formed at a position lower than the central portion of the side wall surface 2 of the cap 1, and the locking recess 3 is, as shown in FIG. Is formed so as to correspond to the inclined conical portion 8 beyond the step start end 7 having a diameter smaller than the generatrix of the component in the longitudinal direction, and the inner contact portion 10 of the locking recess 3 is formed. Has a structure in which the inclined conical portion 8 beyond the step start end 7 is locked in a locked state. In the present invention, the locking recess 3 is of a curved type as shown in FIG. 2, and it extends beyond the step start end 10 where the peripheral wall 6 of the masked component has a small diameter. The locking concavity 3 may be formed so as to correspond to the inclined conical portion 8 and the recess α of the locking recess 3 is, for example, 0.5 to 1.0 mm.

[0008]

[Effect of device]

 As described above, since the masking cap of the present invention is configured as described above, it has the following effects. Polyethylene resin is used for the base material of the cap, and it has toughness, dimensional stability, shape resistance and impact resilience in addition to water resistance and chemical resistance. Due to the concave portion, the cap and the masked component can be more securely locked and mounted, and can be used repeatedly. In addition, it can be fitted and mounted with certainty by a simple operation and securely locked and fixed, and can be easily removed after the completion of the masking process and can be easily inserted and removed, contributing to the improvement of work efficiency and cost saving. And the like.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the locking recess of the present invention.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is an explanatory view showing a usage state of the cap of the present invention.

FIG. 5 is a front view showing an example of a conventional product.

FIG. 6 is a front view showing an example of another conventional product.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Marsking cap 2 Side peripheral wall surface 3 Locking concave portion 4 Drilling portion 5 Masking parts 6 Surrounding wall 7 Step start end portion 8 Inclined cone portion 9 Opening end portion 10 Inner contact portion 11 Annular drilling portion 12 peripheral wall surface 13 opening end edge portion 14 expanded diameter portion

Claims (2)

[Scope of utility model registration request] 1. A cylindrical masking cap having one end opened and the other end having a side end wall, the cap being made of a resin molding material selected from polyethylene resin or the like,
In addition, a locking recess is formed in the side wall surface of the cap in correspondence with the inclined conical portion beyond the step start end portion having a diameter smaller than the generatrix of the surrounding wall in the body of the component to be fitted. The structure of the masking cap is a structure that prevents it from coming off. 2. The structure of the masking cap according to claim 1, wherein at least two locking recesses are formed on the annular wall of the side wall surface at the same height.