KR0142766B1 - Apparatus for preventing image from shaking for camcorder - Google Patents

Abstract

The present invention provides an elastic member for pushing the first and second zoom and the master guide shaft to the sub-axis and the main shaft formed on the upper and lower portions of the variator for enlarging the subject of the video camera and the master for adjusting the focus of the subject. As it is fixed, it is possible to prevent the shaking of the image generated during zooming and the image change caused by the shooting posture as a simple structure, which can provide convenience in use, reduce the defective rate, increase productivity, and reduce the mold manufacturing cost. The manufacturing cost can be reduced, which greatly improves the efficiency and reliability of the product.

To this end, the present invention provides a variator (1) for enlarging the subject, a master (2) for adjusting the focus of the subject, and the upper and lower portions of the variator (1) and the master (2), respectively To guide the movement of the variator 1 and the master 2 to the spindle 3, 4, 5, 6 and the sub-shaft 3, 4, 5, 6. A first and second zoom and master guide shafts (7) (8) (9) (10) for the present invention; The fixing groove 14 formed on one side of the guide groove 13 of the sub-shaft parts 3 and 4 and inserted into the fixing groove 14 to be fixed to the guide groove 13 of the sub-shaft parts 3 and 4. An elastic member 11 for pushing the inserted first zoom and master guide shafts 7 and 9 toward the guide groove 13 and the outer peripheral edges of the main shaft portions 5 and 6 are formed at predetermined positions. A second zoom and master guide shaft 8 inserted into and fixed to the through hole 17 having the support protrusion 16 and inserted into the guide hole 15 of the main shaft portions 5 and 6; 10) is a video camera shake prevention device composed of an elastic member 12 for pushing the guide hole 15 side.

Description

Image stabilization device of video camera

1 is a cross-sectional view showing a conventional video camera.

2 is a perspective view showing the minor axis of the variator and the master of FIG.

3 is a perspective view showing the main shaft of the variator and the master of FIG.

4 is a cross-sectional view showing a line A-A of FIG.

5 is an exploded perspective view showing the minor axis of the variator and the master according to the present invention.

6 is an exploded perspective view showing the main shaft portion of the variator and the master according to the present invention.

7 is a cross-sectional view taken along line B-B in FIG.

8 is a cross-sectional view taken along the line C-C of FIG.

* Explanation of symbols for the main parts of the drawings

1: Variator 2: Master

3,4: minor shaft portion 5, 6: major shaft portion

7: 1st zoom guide axis 8: 2nd zoom guide axis

9: 1st master guide shaft 10: 2nd master guide shaft

11, 12: elastic member 13: guide groove

14: fixing groove 15: guide hole

16: support protrusion 17: fixing hole

The present invention relates to a device for preventing image shake of a video camera, and more particularly, to prevent an image change caused by a shake of an image generated during zooming of a video camera and a posture difference of a shooting position as a simple structure. will be.

In the conventional video camera, as shown in FIGS. 1 to 3, the rotational motion of the zoom and focus motors 19 and 20 and the zoom and focus motors 19 and 20, which are stepped motors, is a straight line. The subject is enlarged and the subject is focused according to the linear movements of the variator and master racks 21 and 22, and the variator and master racks 21 and 22, which are mediums that convert to motion. It consists of a variator la and a master 2a for adjustment and support means for supporting the variator la and the master 2a.

In addition, the support means are formed on the upper part of the variator la and the master 2a, respectively, and have the minor shaft portions 3a and 4a having the guide grooves 13a, and the variator la and the master 2a. The main shaft portions 5a and 6a formed in the lower portions and having the guide holes 15a and the guide grooves 13a of the minor shaft portions 3a and 4a are inserted and supported, and the variator la and the master 2a are inserted therein. The first zoom and master guide shaft (7) (9) and the guide hole (15a) of the main shaft portion (5a) (6a) for guiding the movement of the) is supported and the variator (la) and the master (2a) And a second zoom and master guide shaft (8) (10) for guiding the movement.

Therefore, when the zoom and focus motors 19 and 20 are driven, they are coupled to the variator la and the master 2a to convert the rotational movement of the zoom and focus motors 19 and 20 into linear motion. As the power of the zoom and focus motors 19 and 20 is transmitted by the variator and the master racks 21 and 22 which are power transmission media, the variator la zooms in on the subject and the master 2a. Will focus.

At this time, the variator la and the master 2a, which perform the zooming and focusing functions, respectively, the first and second zooms of the upper and lower parts of the upper and lower parts 3a, 4a, 5a, and 6a, respectively, are provided. And because it is supported by the master guide shaft (7) (8) (9) (10) to move in the optical axis direction.

On the other hand, a first having a guide groove 13a and a guide hole 15a on the variator la and the master 2a, and a guide hole 15a, a first shaft part 3a, 4a, 5a, 6a is inserted. When the gap (Gap) of the two zoom and master guide shafts (7) (8) (9) (10) exceeds the allowable amount between 2 µm and 8 µm, as shown in Fig. 4, the variator la and the master When (2a) is moving in one direction or when changing the direction (Zoom: Tele-Wide, Wide--Tele, Focus: Far-Near, Near-- Far), move the amount of the gap and record and play back the tape. The image may be shaken or cause a change in image due to the shooting posture.

Therefore, in order to prevent such image shaking during zooming of the conventional video camera or image change due to photographing posture, the upper and lower portions on the variator la and the master 2a and the main shaft portions 3a, 4a and 5a. The gap caused by the diameter tolerance of the guide groove 13a and guide hole 15a of the 6a and the first and second zoom and master guide shafts 7, 8, 9 and 10 should be removed. In order to make injection molding the size of the guide groove 13a and the guide hole 15a of the part, the main shaft portion (3a) (4a) (5a) and (6a) in the unit of μm, high-cost precision mold production is required. In addition, there are many problems, such as the production cost increases due to the occurrence of defects in parts and defects in product production according to injection conditions during injection molding.

The present invention is to solve the above-described problems, it is possible to provide a user with convenience by preventing the image change caused by the shaking of the image and the posture difference of the shooting position caused by the zooming of the video camera as a simple structure. In addition, an object of the present invention is to provide an image shake prevention device of a video camera which can reduce productivity and reduce manufacturing costs by reducing defective rates in parts and products.

In order to achieve the above object, the present invention provides a variator for enlarging a subject, a master for adjusting the focus of the subject, a minor shaft having a guide groove formed on each of the variator and the master, and the variator And a main shaft portion formed at a lower portion of the master, each having a guide hole, a guide groove of the sub-shaft portion inserted therein, and a first zoom and master guide shaft for guiding movement of the variator and the master, and a guide hole of the main shaft portion. Supported and composed of a second zoom and master guide shaft for guiding movement of the variator and the master; A fixing groove formed at one side of the guide groove of the sub-shaft part, an elastic member fixed to the fixing groove to push the first zoom and the master guide shaft inserted into the guide groove of the sub-shaft part to the guide groove side, and at a predetermined position of the outer periphery of the main shaft part. Anti-image shake of the video camera, characterized in that it is formed of a through hole having a support projection on both sides, and the elastic member for fixing the second zoom and the master guide shaft inserted into the guide hole of the main shaft portion to the guide hole side In providing a device.

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 5 to 8 as follows.

5 is an exploded perspective view showing the minor axis of the variator and the master according to the present invention, Figure 6 is an exploded perspective view showing the main axis of the variator and the master according to the present invention, Figure 7 is a BB cross-sectional view of FIG. 8 is a cross-sectional view taken along the line CC of FIG. 6, and includes the auxiliary shafts 3 and 4 formed on the upper and lower portions of the variator 1 for enlarging the subject of the video camera and the master 2 for adjusting the focus of the subject. Elastic members 11 for pushing the first and second zoom and master guide shafts 7, 8, 9, 10 to prevent image blur and change when zooming on the main shaft portions 5, 6 ( 12) is fixed.

In addition, the fixing groove 14 to which the elastic member 11 is integrally inserted and fixed is formed at one side of the guide groove 13 of the minor shaft portion 3, 4 of the variator 1 and the master 2, On one side of the guide hole 15 of the main shaft portion 5, 6 of the variator 1 and the master 2, that is, at the predetermined position of the outer circumferential edge of the main shaft portion 5, 6, the support protrusions are integrally formed at both sides. A through hole 17 having a portion 16 is formed, and the fixing holes 18 on both sides of the elastic member 12 are inserted into and fixed to the support protrusion 16.

According to the present invention configured as described above with reference to FIGS. 5 to 8, the sub-shaft portion formed on each of the variator 1 for enlarging the subject of the video camera and the master 2 for adjusting the focus of the subject is provided. (3) Since the elastic member 11 is inserted into and fixed to the fixing groove 14 integrally formed at one side of the guide groove 13 of the first side, the first zoom and the master guide shafts 7 and 9 are always elastic members ( It is pushed by the force of 11).

In addition, at one side of the guide hole 15 of the main shaft portion 5, 6 formed under each of the variator 1 and the master 2, that is, at a predetermined position of the outer peripheral edge of the main shaft portion 5, 6 Since the fixing holes 18 of both sides of the elastic member 12 are inserted into and fixed to the support protrusions 16 on both sides of the through-hole 17 formed integrally, the second zoom and the master guide shafts 8 and 10 are always elastic members ( By pushing by the elastic force of 12), it is possible to use the user conveniently by preventing the image shaking during the zooming or the image change caused by the shooting posture as a simple structure.

In addition, it is possible to increase the productivity by significantly reducing the defect rate during the production of parts and products, and at the same time to reduce the manufacturing cost of the mold.

As described above, according to the present invention, the sub-axial part 3 (4) and the main axis formed on the upper and lower portions of the variator 1 for enlarging the subject of the video camera and the master 2 for adjusting the focus of the subject, respectively. An image generated during zooming by fixing the elastic members 11 and 12 to push the first and second zoom and the master guide shafts 7, 8, 9, 10 to the sections 5 and 6. Because of the simple structure, it can prevent the shaking and the image change caused by the shooting posture, which can provide convenience in use, reduce the defective rate, increase the productivity, and reduce the manufacturing cost by reducing the mold manufacturing cost. It is a very useful invention that greatly improves the efficiency and reliability of the product.

Claims (1)

A variator for enlarging a subject, a master for adjusting the focus of the subject, a minor shaft portion formed at an upper portion of the variator and a master, each having a guide groove, and formed at a lower portion of the variator and the master, respectively, A main shaft portion having a ball, a guide groove of the sub-shaft portion is inserted and supported, and a first zoom and master guide shaft for guiding movement of the variator and the master, and a guide hole of the main shaft portion is inserted and supported to move the variator and the master. Comprising a second zoom and master guide axis for guiding; A fixing groove formed at one side of the guide groove of the sub-shaft part, an elastic member fixed to the fixing groove to push the first zoom and the master guide shaft inserted into the guide groove of the sub-shaft part to the guide groove, and at a predetermined position of the outer circumferential part of the main shaft part. The image shake prevention of the video camera, characterized in that it is formed of a through hole having a support protrusion on both sides, and the elastic member is fixed to the through hole and the second zoom and the master guide shaft inserted in the guide hole of the main shaft portion to the guide hole side. Device.