KR20160112855A

KR20160112855A - ball head for camera tripods and methods of manufacturing thereof

Info

Publication number: KR20160112855A
Application number: KR1020150039227A
Authority: KR
Inventors: 차삼용
Original assignee: 차삼용
Priority date: 2015-03-20
Filing date: 2015-03-20
Publication date: 2016-09-28

Abstract

The present invention provides a manufacturing method of a ball head for camera tripods comprising: a material preparation step of cutting a rod-shaped material into a certain length; a first material machining step of machining the prepared material with a computerized numerical control (CNC) method to produce a coupling protuberance coupled to a camera and performs a cutting process to make the inside of the coupling protuberance hollow; a step of molding and compressing a machined object which is processed at the a first material machining step; and a step of producing a ball head by separating the machined object processed at the previous steps from a mold, wherein in the material machining step, the thickness of a machining object is machined uniformly.

Description

Technical Field [0001] The present invention relates to a ball head for a camera tripod and a manufacturing method of the ball head for the camera tripod,

The present invention relates to a ball head for a camera tripod and a method of manufacturing the ball head. More particularly, the present invention relates to a ball head capable of reducing deformation due to external factors while reducing the weight of a product, and a manufacturing method thereof.

One of the things we use to make memories is camera shots. In recent years, digital cameras have appeared, and the convenience of use has been improved more than conventional cameras using film.

For this reason, especially when traveling, the user carries the camera. When the user takes a picture of himself / herself or takes a picture at a place for a long time, the user takes a picture using a tripod.

The tripod has a structure in which a plurality of legs are opened at a certain angle to be able to take a stable posture, and the height of the tripod can be adjusted to suit various environments.

In addition, the camera tripod is a means for rotating the camera according to the shooting position to have various postures, and a ball head is provided between the camera and the tripod so that the camera can be rotated.

The ball head is a sphere-shaped metal member that is rotatable in a pocket.

However, since the ball head is made of a metal material and has a certain outer diameter, the total weight of the camera tripod is increased due to the weight of the ball head.

In order to reinforce these disadvantages, attempts have been made to reduce the weight by cutting the inside of the ball head, and some products have been made.

Korean Patent Registration No. 10-0339508 "Ball Head for Industrial and Tripod" discloses cutting the inside of a ball head.

As shown in FIG. 2 of this patent, the inside of the ball is hollow. The outer surface of the ball has a circular structure, but the inner space has a polygonal shape, so that the thickness of the ball is thick and the other is thin.

As the thickness of the balls becomes nonuniform, the ball becomes tolerant as long as the ball is deformed.

In addition, since the ball of the conventional structure maintains the spherical shape from the beginning, there is a problem that the clamping force between the outer surface of the ball and the inner peripheral surface of the ball pocket to which the ball outer surface is closely attached can not be maintained at a satisfactory level.

And although cutting the inside of the ball to reduce its weight, the weight reduction is not achieved to a satisfactory level because the cutting is done in part.

Korea Patent Registration No. 10-0339508 "Ball Head for Industrial and Tripod"

It is an object of the present invention to provide a ball head for a camera tripod capable of minimizing deformation due to external factors while reducing the weight and increasing the clamping force with the ball pocket, And a method of manufacturing the head.

In order to realize the object of the present invention, there is provided a ball head for a camera tripod, which is installed between a camera and a tripod,

A coupling protrusion for fastening to the camera;

An arc portion extending from the engaging projection and having a hollow portion formed therein;

A machining tool entrance formed at an end of the arc portion;

And a ball head for a camera tripod.

The arc portion is a ball head for a camera tripod whose thickness is uniformly formed.

A material preparing step of cutting the bar-shaped material to a predetermined length;

A first material processing step of CNC processing the prepared material to form a coupling protrusion to be coupled with the camera, and cutting the inside into a hollow shape;

A step of press-bonding a workpiece having completed the first material processing step;

The ball head is manufactured by separating the workpiece from the mold metal to manufacture the ball head.

The ball head according to the present invention can be prevented from being deformed due to unevenness in thickness because the inside is completely hollow and light in weight and the thickness of the ball is uniform, Because of the elasticity of the ball, it is possible to increase the clamping force when installed in the ball pocket.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing an installation state of a ball head according to an embodiment of the present invention; Fig.
FIG. 2 is a process diagram for explaining a manufacturing process of a ball head according to an embodiment of the present invention. FIG.

1 is a perspective view of a ball head according to an embodiment of the present invention, and reference numeral 2 indicates a ball head body.

A spherical ball (4) is rotatably mounted on the body (2). To this end, the body 2 is formed with a ball pocket 6 having a size corresponding to the ball 4. [

On the upper side of the ball 4, a coupling protrusion 8 for fixing a camera (not shown) is protruded.

And a ball fixing handle 10 for adjusting an adhering force to the ball 4 is installed on one side of the body 2.

The ball head having such a structure may be the same as or similar to a conventional ball head. The present invention is characterized in that the method of manufacturing the ball (4) in a hollow form is lighter and less deformable than the conventional ball head, Provides such an excellent ball head.

2 shows a ball manufacturing process according to an embodiment of the present invention.

First, a material preparing process for cutting a bar-shaped metal or non-ferrous metal material to an appropriate size is performed. Preferably, aluminum can be used. (Fig. 2, A)

Next, the prepared rod shape is processed as shown in Fig. 2 (b) by machining the workpiece m in the CNC linear direction.

That is, the material m is processed to form a coupling projection 8 for coupling the camera to the left in the drawing, as shown in Fig. 2 (b). In the drawing, the processing tool of the CNC lathe is relatively Create a large machining tool entry point (i).

The machining tool of the CNC lathe cuts the inner portion of the work m through the entrance i so as to make a circular portion p on one side and a straight portion l on the circular portion p.

This is because the machining tool can make the straight section 1 while entering the entry point i and then make the arc section p thereafter.

Because of the straight portion 1, the machining tool can deeply enter the portion where the arc portion p is formed, so that the machining can be facilitated.

The advantage of such a machining is that the thickness of the arc portion p and the straight portion 1 can be made uniform.

The semi-finished ball head is machined to have a symmetrical structure about the center c.

As shown in Fig. 2 (b), the semi-finished ball head is set on the mold die to perform the mold pressing process using the mold die n.

The mold die used in this mold pressurizing step is composed of a pair of molds whose inner side faces are hemispherical, and is operated by a general mold die apparatus.

In this process, the linear portion (1) m of the semi-finished ball head is pressed along the hemispherical surface of the inner side of the mold due to the pressing of the pair of mold dies from both sides, The circular arc part p and the straight line part 1 of the semi-finished ball head are brought into close contact with the inner surface of the mold part to be changed into a sphere shape.

At this time, the entrance (i) is squeezed and the entrance is reduced so that the workpiece has a spherical shape.

When the mold pressing process is completed, the ball 4 of the ball head as shown in FIG. 2B can be obtained by separating the mold as shown in FIG.

Since the ball of the ball head manufactured by the above method has an arc-shaped hollow portion inside and the outer side surface of the uniform thickness is formed into an arc shape, the thickness of the ball is uneven and the problem of thermal deformation can be minimized.

In addition, since the inside of the ball can be completely formed as the hollow portion, the weight can be minimized.

In addition, since the ball head is formed into an arc shape by the press-molding of the mold, the ball head is in a state having an elastic force, so that the clamping force can be increased when the ball head is inserted into the ball pocket 6 of the body 2.

2; Body
4; ball
6; Ball pocket
8; Joining projection
i; Entrance
l; Straight portion
p; Arc part

Claims

A ball head for a camera tripod, which is installed between a camera and a tripod,
A coupling protrusion for fastening to the camera;
An arc portion extending from the engaging projection and having a hollow portion formed therein;
A machining tool entrance formed at an end of the arc portion;
A ball head for camera tripods.

The method according to claim 1,
Wherein the circular arc portion has a uniform thickness.

A material preparing step of cutting the bar-shaped material to a predetermined length;
A first material processing step of CNC processing the prepared material to form a coupling protrusion to be coupled with the camera, and cutting the inside into a hollow shape;
A step of press-bonding a workpiece having completed the first material processing step;
And separating the workpiece having completed the step from the mold metal to manufacture a ball head.

The method of claim 3,
Wherein the first material processing step includes processing a linear portion extending from an entry port into which the processing tool enters the workpiece and a circular arc portion extending from the linear portion.

The method of claim 4,
Wherein the entrance is reduced by mold pressing.

The method of claim 3,
And the thickness of the workpiece is uniformly processed in the first material processing step.