KR101790470B1 - Doorlock cover and manufacturing method of doorlock cover - Google Patents

Abstract

The door lock cover 100 according to the present invention is configured as follows.
A body 110 having a plate shape, an insertion groove 111 formed in the front surface F of the body 110, a shaft hole 113 formed in the insertion groove 111 and penetrating rearward, And a cover plate (120) fitted in the through hole (111) and formed with a through hole (127) connected to the shaft hole (113).
The method of manufacturing the door lock cover 100 is as follows.
A casting step of making the body 110 and the cover plate 120 by die casting and a step of forming the insert hole 111, the shaft hole 113 and the pin hole 119 in the body 110 after the casting step, And forming a through hole 122 in the cover plate 120 and plating the body 110 and the cover plate 120 with nickel chrome after the cutting step.
Therefore, the following effects can be obtained.
Even if the lever 200 is rotated in the state where the lever 200 is inserted into the cover plate 120, a phenomenon of friction due to the friction of the lever 200 on the entire surface of the cover plate 120 can be prevented.
In addition, since the cover plate 120 can be replaced, it is possible to produce an image with the cover plate 120 of various colors and patterns.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a door lock cover and a door lock cover,

The present invention relates to a method of manufacturing a door lock cover and a door lock cover, and more particularly, to a door lock cover and a door lock cover, which can prevent a front surface of a body constituting a door lock cover from being worn by rotation of a lever, And a method of manufacturing the door lock cover.

Hereinafter, the structure of the door lock cover according to the background art will be described with reference to the accompanying drawings.

Fig. 1 is a perspective view showing that a lever is mounted on a door lock cover according to the background art. Fig. 2 is a door lock cover according to the background art, which is a perspective view showing a worn-

In general, door locks are installed on the hinged doors so that they can be locked while operating the handle.

The door lock cover 10 is attached to both sides of the door of the door. The lever 20 is inserted into the door lock cover 10 and rotates. The door lock cover 10 is interposed between the door lock covers 10 And a driving unit installed inside the door. The driving unit is equipped with a locking function and is configured to prevent rotation of the lever 20 to prevent opening of the door.

At this time, the door lock cover 10 has a plate-shaped body 11, and a shaft hole 15 is formed in the body 11 so that the lever 20 can be inserted and rotated.

The door lock cover 10 is manufactured by molding the door lock cover 10 by die casting and then drilling the shaft hole 15 with a drill. Then, the door lock cover 10 is finished by plating the surface of the door with the nickel chromium plating.

In the case of the door lock cover 10, as shown in FIG. 2, due to frequent rotation of the lever 20, there is a problem that the abrasion mark D is rounded at the portion contacting the lever 20 to deteriorate the appearance. Particularly, if the cross section of the lever 20 is rectangular, this phenomenon becomes more serious because of the trajectory of the portion of the vertex 27. Therefore, in order to repair the door lock cover 10, there is an economical burden to replace the door lock cover 10 as a whole.

Further, the door lock cover 10 has a problem that it is impossible to produce a new image. There is an economical burden to replace the body 11 itself in order to produce a new image.

(Document 1) Korean Design Registration No. 30-0713645 (Oct. 18, 2013) (Document 2) Korean Design Registration No. 30-0451981 (June 01, 2007)

The door lock cover and the door lock cover manufacturing method according to the present invention solve the following problems.

In the door lock cover, as shown in Fig. 2, due to frequent rotation of the lever, there is a problem that a rounded abrasion mark is formed at a portion abutting the lever, thereby deteriorating the appearance. Particularly, when the cross section of the lever is square, this phenomenon becomes more serious because of the trajectory of the vertex portion. Therefore, an attempt is made to solve the problem of increasing the economical burden of replacing the door lock cover in order to repair the door lock cover.

Also, the problem of impossibility of rendering various images of the door lock cover is solved.

A door lock cover according to the present invention is configured as follows to solve the above problems,

And a cover plate having a plate body, an insertion groove formed in the front surface of the body, a shaft hole formed in the insertion groove and penetrating rearwardly, and a through hole formed in the insertion groove and connected to the shaft hole, .

A pinhole formed in the insertion groove and extending rearwardly, the pinhole being disposed around the shaft hole; and a pin connected to the rear surface of the cover plate to be inserted into the pinhole.

The through hole may include a through hole extending through the cover plate. The through hole may include a tapped hole formed in a rear portion thereof, and a tapered hole connected to the front of the tapped hole and formed to have a narrow width toward the front side A ball inserted rearwardly of the through hole and partially exposed forward by the taper hole, and a set screw coupled to the tapped hole to support the ball.

The cover plate is fitted into the inside of the frame so that the frame surface is in contact with the inside surface of the frame, And an outer width of the rim surface is formed in a tapered shape that narrows toward the rear.

A method of manufacturing a door lock cover according to the present invention is as follows to solve the above problems.

As a method of manufacturing the door lock cover,

A cutting step of forming the body and the cover plate by die casting; a cutting step of forming the insertion groove, the through hole and the pin hole in the body after the casting step and forming a through hole in the cover plate; A plating step of plating the body and the cover plate with nickel chrome; and a plating step of bonding the ball and the set screw to the cover plate after the plating step, fitting the frame into the insertion groove, A finishing step of finishing a portion of the body and the cover plate excluding the colored portion with a tape after the finishing step; A coloring step of ejecting a coloring agent onto the entire surface of the body and the cover plate; and a drying step of removing the tape after drying the coloring agent after the coloring step It should.

Further, in the assembling step, the frame is made of a material which is softer than the cover plate, so that the edge face of the cover plate is inserted while compressing the inside face of the frame.

The present invention by the above-mentioned solution can exhibit the following effects.

First, when the a-shaped lever is pierced through the shaft hole of the body through the through hole of the cover plate, the end of the lever touches the ball as shown in Fig. Thus, the end portion of the lever is spaced apart from the cover plate. In this state, when the lever is rotated in the forward / reverse direction, the rolling phenomenon of the ball causes the lubricating action. Therefore, there is an effect that the occurrence of a mark due to the contact of the lever on the surface of the cover plate can be prevented.

Secondly, if the ball of the cover plate does not roll properly and needs to be repaired, or if it is desired to replace the cover plate with another color and produce another image, the cover plate can be replaced. In particular, if the cover plate is provided with various colors and patterns, it is possible to easily produce various images.

1 is a perspective view showing that a lever is mounted on a door lock cover according to the background art;
Fig. 2 is a perspective view showing a door-lock cover according to the background art in which a worn-out mark is formed on the front surface by rotation of the lever.
3 is a perspective view showing that a lever is mounted on a door lock cover according to the present invention.
4 is a perspective view showing a rear portion of a door lock cover according to the present invention;
5 is a cross-sectional view taken along line F-F 'of FIG. 3;
6 is an exploded sectional view showing part C of Fig.
7 is a perspective view showing a casting step and a cutting step in the method of manufacturing a door lock cover according to the present invention.
FIG. 8 is a perspective view showing the assembling step of the door lock cover according to the present invention. FIG.
9 is a perspective view showing a coloring step of a method of manufacturing a door lock cover according to the present invention.
10 is a perspective view showing a state in which a door lock cover according to the present invention is colored through a coloring step.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

(Door lock cover)

FIG. 3 is a perspective view of a door lock cover according to the present invention, FIG. 4 is a perspective view illustrating a rear portion of the door lock cover according to the present invention, and FIG. 5 is a sectional view taken along line F- , And Fig. 6 is a disassembled cross-sectional view showing part C of Fig. 5 together.

A body 110 having a flange 116 protruding rearward from a rim is formed as a rectangular plate and an insertion groove 111 is formed in a front surface F of the body 110. The insertion groove 111 is formed in a rectangular shape, And a shaft hole 113 is formed so that the lever 200 can be inserted. The lever 200 is formed in a door lock, and can be opened and closed by forward and reverse rotation. Further, a pinhole 119 is formed around the shaft hole 113, which is formed in the insertion groove 111 and penetrates rearward. A rear shaft 115 protrudes rearward from the rear surface of the body 110 and is connected to a driving unit of the door lock. The rear shaft 115 passes through the rear shaft 115 from the front surface F of the body 110, A screw hole 117 is formed. Accordingly, the screw can be coupled to the driving unit through the screw hole 117. The structure of the rear axle 115 and the driving unit is a general one and can be understood by anyone skilled in the art, so a detailed description will be omitted.

The cover plate 120 is formed with a through hole 127 inserted into the insertion hole 111 and connected to the shaft hole 113. And a pin 121 fitted to the pinhole 119 is connected to the rear surface of the cover plate 120.

5 and 6, a through hole 122 is formed in the cover plate 120 and is disposed around the through hole 127 through the cover plate 120. The through hole 122 is formed in the through- A taper hole S is formed at the rear side and a taper hole T is formed at a front side of the tapped hole S and narrowed toward the front side. A ball 123 inserted into the through hole 122 and partially exposed forward by the taper hole T is formed. A set screw 125, which is fastened to the tapped hole S and supports the ball 123, is constructed. Therefore, the ball 123 is rotatable without being detached from the front and rear in a state where a part of the ball 123 is exposed frontward. At this time, the set screw 125 is configured to be completely received inside the tap hole S so as not to protrude rearward. Therefore, the cover plate 120 is configured to be in close contact with the insertion groove 111.

As shown in FIGS. 5 and 6, a tapered shape 130 is formed in a close contact with the inner side surface of the insertion groove 111 to narrow the inner width V toward the rear, and the cover plate 120 Is fitted to the inside of the frame 130 and the frame face 128 is formed in close contact with the inner side face 133 of the frame 130 and the outer width W of the frame face 128 is And is formed in a tapered shape that narrows toward the rear. Therefore, when the cover plate 120 is inserted into the insertion groove 111, the rim surface 128 of the cover plate 120 flows into the inner side surface 133 of the rim 130, When the front surface of the body 120 is tapped with a rubber hammer or the like, a phenomenon occurs in which the edge surface 128 is press-fitted while pressing the inner surface. Therefore, the cover plate 120 is maintained in the inserted state without being detached from the insertion groove 111. That is, suppression fitting can be performed. At this time, the slope a1 of the inner side surface 133 and the slope a2 of the edge surface 128 are preferably 5 ° to 25 °. That is, insertion of the cover plate 120 at this angle is facilitated and deviation can also be prevented. At this time, the pin 121 passes through the pinhole 119. Therefore, when the cover plate 120 needs to be removed due to maintenance, the cover plate 120 can be detached when the pin 121 is hit. Further, it is preferable that the frame 130 is made of a material that is thinner than the cover plate 120 so as to be easily compressed and deformed. For example, if the cover plate 120 is formed of aluminum, it is preferable that the frame 130 is made of copper, rubber or synthetic resin that is more ductile than aluminum.

The operation and effects of the door lock cover 100 according to the present invention will be described as follows.

When the a-shaped lever 200 is passed through the shaft hole 113 of the body 110 through the through hole 127 of the cover plate 120, the end of the lever 200 is inserted into the ball 123, . Accordingly, the end of the lever 200 is spaced apart from the cover plate 120. In this state, when the lever 200 is rotated in the forward and reverse directions, the rolling motion of the ball 123 causes a lubricating action. Therefore, it is possible to prevent a phenomenon that a mark occurs due to the contact of the lever 200 on the surface of the cover plate 120.

In addition, when the ball 123 of the cover plate 120 is not properly rolled so as to be repaired, or when it is desired to replace the cover plate 120 with another color to produce another image, When the pin 121 is hit with a rubber hammer or the like, the cover plate 120 can be detached. When the cover plate 120 is disengaged as described above, a new frame 130 is inserted after the frame 130 fitted in the insertion groove 111 is released by a punch or the like. The new frame 130 is inserted into the frame 130 with a rubber hammer. At this time, the pin 121 connected to the rear of the cover plate 120 is inserted into the pin hole 119. Therefore, the cover plate 120 can be replaced. Particularly, if the cover plate 120 is displayed with various colors and patterns, there is an advantage that various images can be easily produced.

(Manufacturing method of door lock cover)

FIG. 3 is a perspective view of a door lock cover according to the present invention, FIG. 4 is a perspective view illustrating a rear portion of the door lock cover according to the present invention, and FIG. 5 is a sectional view taken along line F- Fig. 7 is a perspective view showing a casting step and a cutting step, and Fig. 8 is a perspective view showing a door lock cover manufacturing method according to the present invention Fig. 9 is a perspective view showing a coloring step, and Fig. 10 is a method of manufacturing a door lock cover according to the present invention. Fig. 9 is a perspective view showing a coloring step of the door lock cover according to the present invention. The state will be described together with a perspective view.

As a method of manufacturing the door lock cover 100 described above,

1. Casting step

A casting step for manufacturing the body 110 and the cover plate 120 by die casting is performed. At this time, since the material is made of aluminum, it is possible to form a lightweight and dense tissue product.

2. Cutting step

After the casting step, the insert hole 111, the shaft hole 113 and the pin hole 119 are formed in the body 110, the through hole 122 is formed in the cover plate 120, (117) passing through the rear shaft (115) from the front surface (F) of the body (110) through the rear shaft (115). In this cutting step, the insertion groove 111 is formed through end milling in the milling, and the shaft hole 113, the pin hole 119, and the screw hole 117 can be made by a milling or a drilling operation in a drilling machine have. And the through hole 122 may be formed by milling or drilling and tapping in a drilling machine.

3. Plating step

After the cutting step, a plating step of nickel-chrome plating the body 110 and the cover plate 120 is performed.

The plating step is performed by immersing the body 110 and the cover plate 120 in trichlorethylene to dissolve and dissolve the rust and foreign matter, and then recovering, washing with water, and drying in hot air .

After the degreasing step, an etching step is performed in which the body 110 and the cover plate 120 are immersed in an alkali solution to etch the surface. The alkali solution may be prepared by mixing sodium hydroxide and water in a volume ratio of 1: 5. The surface roughness of the body 110 and the cover plate 120 can be improved through such an etching step. At this time, the etching time for the alkali solution is preferably 20 seconds to 40 seconds, and the etching depth is within a range of several mu m to 10 mu m.

After the etching step, an acid treatment step of treating the surfaces of the body 110 and the cover plate 120 with an acid is performed. At this time, the body 110 and the cover plate 120 are immersed in a mixed solution of nitric acid and water in a volume ratio of 1: 6, and acid treatment is performed for 30 seconds to 40 seconds. The acid treatment is performed in such a manner that when the alkaline treatment is performed in the degreasing step, a smut occurs on the aluminum surface. The smudge means that the aluminum alloy component is exposed to the surface, and typical components exposed are copper, silicon, magnesium and the like. If the smut remains, the adhesion of the plated film is lowered, so that it is removed through acid treatment. After the normal acid treatment, it is washed with water to remove nitric acid.

After the acid treatment step, a zincate plating step is performed in which the corroded portion on the surface of the body 110 and the cover plate 120 is plated with zinc. In general, aluminum is a material that is difficult to be plated because of the rapid formation of an oxide film. Therefore, if the zinc oxide plating is performed after the aluminum surface is corroded through the acid treatment step, the corroded surface is denatured with zinc, so that the adhesion after plating can be ensured. The zincate plating step is completed by immersing the body 110 and the cover plate 120 in the zincate solution for 5 minutes to 8 minutes, followed by washing with water. The zincate solution used is a mixture of zincate and water in a volume ratio of 3: 2.

After the zincate plating step, a nickel plating step is performed in which the body 110 and the cover plate 120 are immersed in a nickel plating solution and stirred. At this time, the temperature of the nickel plating solution is set to be 80 ° C to 90 ° C. After the nickel plating solution is filled in the stirring tank, the body 110 and the cover plate 120 are immersed sufficiently in the stirring tank, It is possible to rotate at 10 rpm to 15 rpm. When stirring is performed for 50 minutes to 70 minutes in this way, 10 μm of nickel can be plated.

After the nickel plating step, the body 110 and the cover plate 120 are immersed in the chromium solution so that the chromium plating step is performed. The temperature of the chrome liquid is adjusted to be in the range of -5 ° C to 5 ° C, and the immersed state is maintained for 10 minutes to 30 minutes. Then, chromium plating thickness of 2 mu m to 3 mu m can be obtained.

After the chrome plating step, the body 110 and the cover plate 120 are washed with water, followed by drying with hot air at 30 ° C to 50 ° C for 20 minutes to 30 minutes.

4. Assembly phase

After the plating step, as shown in FIGS. 6 and 8, the ball 123 and the set screw 125 are coupled to the cover plate 120, the frame 130 is inserted into the insertion groove 111, And the pin 121 is inserted into the pin hole 119 while inserting the cover plate 120 into the inside of the frame 130. When inserting the cover plate 120, it is possible to hit it with a rubber hammer. The frame 130 may be made of a material that is softer than the cover plate 120 so that the edge face 128 of the cover plate 120 compresses the inner side surface 133 of the frame 130, So that the cover plate 120 is prevented from being separated.

5. Closing Steps

After the assembling step, as shown in FIG. 9, a finishing step of finishing the portion of the body 110 and the cover plate 120 excluding the colored portion G with the tape A is performed.

6. Coloring step

After the finishing step, a coloring step of spraying a coloring agent onto the entire surface of the body 110 and the cover plate 120 is performed. The coloring agent (model name: SY-090, manufactured by Fisher Polymer Co., Ltd.) is capable of coloring various colors in metal, and melanin and a solvent are mixed. 40% by weight, melanin 10% by weight to 20% by weight, and solvent 40% by weight to 50% by weight. At this time, various colors are displayed according to the color of the melanin, the solvent functions as a diluent, and the colorant functions to coat the surface of the metal with the melanin.

7. Drying step

After the coloring step, the coloring agent is dried for 30 minutes to 60 minutes by hot air at 60 ° C to 80 ° C, and then the tape (A) is stripped to complete the production.

It is a matter of course that the operation example and the effect of the door lock cover 100 manufactured in this way are the same as those described in the above structural description.

The embodiments and the accompanying drawings described in the present specification are merely illustrative of some of the technical ideas included in the present invention. Therefore, it is to be understood that the embodiments disclosed herein are not for purposes of limiting the technical idea of the present invention, but are intended to be illustrative, and therefore, the scope of the technical idea of the present invention is not limited by these embodiments. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: Door lock cover 110: Body
111: insertion groove 113: shaft hole
115: rear shaft 117: screw hole
119: pinhole 120: cover plate
121: pin 122: through hole
T: Taper hole S: Tapped hole
123: Ball 125: Set screw
130: V: inner width
133: inner side 128:
W: outer width

Claims (6)

A plate body 110,
An insertion groove 111 formed in the front surface F of the body 110,
A shaft hole 113 formed in the insertion groove 111 and penetrating rearward,
Is fitted into the insertion recess 111, and includes a cover plate 120, a through hole 127 connected to the shaft hole 113 is formed,
A pinhole 119 formed in the insertion groove 111 and extending rearwardly and disposed around the shaft hole 113,
And a pin (121) connected to a rear surface of the cover plate (120) and fitted into the pin hole (119)
And a through hole (122) extending through the cover plate (120) and disposed around the through hole (127)
The through hole 122 has a tapped hole S formed in the rear,
And a taper hole (T) connected to the front of the tapped hole (S) and formed to be narrow in the front direction,
A ball 123 inserted rearward of the through hole 122 and partially exposed forward by the taper hole T,
And a set screw (125) fastened to the tapped hole (S) to support the ball (123). delete delete The method according to claim 1 ,
And a tapered rim 130 tightly fitted to the inner side surface of the insertion groove 111 and having an inner width V narrowed toward the rear,
The cover plate 120 is fitted to the inside of the frame 130 so that the frame face 128 is formed in close contact with the inner side face 133 of the frame 130 and the outer side of the frame face 128 And the width (W) is formed in a tapered shape that narrows toward the rear. A method of manufacturing a door lock cover (100) according to claim 4,
A casting step of manufacturing the body 110 and the cover plate 120 by die casting,
A cutting step of forming the insertion hole 111, the shaft hole 113 and the pin hole 119 in the body 110 and forming the through hole 122 in the cover plate 120 after the casting step; ,
A plating step of nickel-chrome plating the body 110 and the cover plate 120 after the cutting step;
After the plating step, the balls 123 and the set screws 125 are coupled to the cover plate 120, the frame 130 is inserted into the insertion groove 111, An assembling step of inserting the pin 121 into the pin hole 119 while inserting the cover plate 120 into the inside,
A finishing step of finishing a portion of the body 110 and the cover plate 120 excluding the colored portion G with a tape A after the assembling step;
A coloring step of injecting a coloring agent onto the entire surfaces of the body 110 and the cover plate 120 after the finishing step,
And a drying step of removing the tape (A) after drying the coloring agent sprayed after the coloring step. 6. The method of claim 5,
The frame 130 may be made of a material that is softer than the cover plate 120 so that the rim surface 128 of the cover plate 120 compresses the inner surface 133 of the frame 130 Wherein the door lock cover is inserted while being inserted into the opening.

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