KR19980074647A - Manufacturing method of winding side loading lever of V-Cal loading device - Google Patents

Abstract

The present invention relates to a method of manufacturing a winding side loading lever of a VRT tape loading device, and more particularly, to an improvement of a manufacturing method of a winding side loading lever which pulls out a tape from a tape cassette seated on a main base and adheres to a head drum assembly. It is about. Accordingly, the present invention has a pinion gear that meshes with a rack gear of a loading plate, and has a metal plate material (M) in the VAL tape loading device having a winding-side loading lever for driving a winding-side connecting link and a supply-side loading lever. It is placed on the primary mold D1 having a forming groove corresponding to the pinion gear, and pressed into the forming groove by pressing the metal plate M portion of the upper portion of the forming groove by using the punch P1. Forming a protruding pinion gear 130; The metal plate M, which has been subjected to the first step, is placed on the secondary mold D2 having a forming groove corresponding to the driving gear 110 and the connecting portion 120, and the metal is punched out using the corresponding punch P1. A secondary step of cutting the external shape of the winding-side loading lever from the plate (M); Manufacturing of the winding side loading lever consisting of; hole processing step of processing the connection hole 104 with the support shaft coupling hole 102 and the winding side connecting link 14 required for the winding side loading lever cut in the secondary process By the method, it is possible to configure the metallic material of the winding-side loading lever and has an effect of stably carrying out the loading operation.

Description

Manufacturing method of winding side loading lever of V-Cal loading device

The present invention relates to a method of manufacturing a winding side loading lever of a VRT tape loading apparatus, and more particularly, to an improvement of a manufacturing method of a winding side loading lever which pulls out a tape from a tape cassette seated on a main base and adheres to a head drum assembly. It is about.

VR is a device that records video signal on magnetic recording tape or reproduces the recorded signal. 16mm V-Cal which is mainly used for home use or 8mm V-Cal (camcorder) which is easy to carry has been developed. Digital VRFs have been developed to use digitized tape. These VRs all have a loading device that performs a 'tape cassette loading' for seating the tape cassette in place and a 'tapping' operation for pulling out the tape from the loaded tape cassette to cover the periphery of the head drum assembly. Equipped. The loading device should be quiet and perform stable operation as well as require low slack of the tape during loading.

1 shows a conventional V-Cal configuration, which includes a traveling system for moving a tape along a predetermined path on the main base 1, a tape cassette C, and a tape T forward or reverse, respectively. The supply reel 10 and the winding reel 20 to be driven are provided.

The traveling system is provided with a head drum assembly 2 including a video head which rotates in contact with the tape T, which is inserted from the tape cassette C, and which records a signal on the tape or reproduces the recorded signal. In addition, the odometer is provided with an audio / control head (3) for scanning a control signal track on the tape to scan the audio signal track to reproduce or record the voice and to control the running state of the tape, and the capstan motor (4). The capstan shaft 5 which rotates by and runs the tape T in cooperation with the pinch roller 6 is provided.

A reel driving device 7 which receives power from the capstan motor 4 and drives one of the reels selected from the supply reel 10 or the reel 20 between the supply reel 10 and the take-up reel 20. ) Is installed.

Further, on the main base 1, guide grooves 11 and 21 are arranged to surround both sides of the head drum assembly 2 to provide a loading position and an unloading position of the tape T. Guide rollers (12a) (22a) and warp poles (12b) (22b), guided by grooves (11) and (21), leading or exiting the tape from the loading position, or moving in the opposite direction, to perform tape loading and unloading. The supply side pole base 12 and the winding side pole base 22 which are provided respectively are provided.

The lower surface of the main base 1 is provided with a supply side loading lever 14 and a winding side loading lever 24 which are engaged with each other and rotatably fixed to the main base. The supply side loading lever 14 and the winding side are provided. A supply side connecting link 16 and a winding side connecting link 26 which are respectively connected to the loading lever 24 are provided.

Each of the supply side pole base 12 and the winding side pole base 22 is configured to be connected to the supply side connection link 16 and the winding side connection link 26 to receive a driving force.

On the main base 1 is provided a cam gear 31 that rotates by a loading motor (not shown). A loading plate 40 is installed on the bottom surface of the main base 1 to be movable and has one end coupled to the cam gear 31 to linearly reciprocate by the rotation of the cam gear 31. On the other side of the loading plate 40 is formed a rack gear 44 meshing with the winding-side loading lever 24.

According to FIG. 2, the loading plate 40 is guide hole 42 coupled to the support shaft 24a rotatably supporting the winding-side loading lever 24 on the one side of the rack gear 44 to the main base 1. ) Is formed. At the end of the support shaft 24a, a washer 46 is provided which restricts the release of the guide hole 42.

According to FIG. 3A, the winding-side loading lever 24 has a driving gear 24b engaged with the supply-side loading lever 14, and the rack gear 44 of the loading plate 40 is formed on the driving gear 24b. It has a two-stage gear structure is formed with a pinion gear (24c) to be engaged with, and the drive gear (24b) is integrally molded when forming the winding side loading lever made mainly of synthetic resin, as shown in Figure 3b.

The V-Cal causes the cam gear 31 to be rotated by the driving of a loading motor (not shown), and the loading plate 40 is linearly moved in accordance with the rotation of the cam gear 31. Then, the winding side loading lever 24 engaged with the rack gear 44 is rotated according to the movement, and the supply side loading lever 14 engaged with the winding side loading lever 24 is rotated. Thus, each of the supply side pole base 12 and the supply side connection link 16 and the winding side connection link 26 which are connected to the winding side pole base 22 are moved, and the supply side pole base 12 and the winding side pole base ( 22 moves along the guide grooves 11 and 21, and withdraws the tape T from the tape cassette C and press-contacts the circumference of the head drum assembly 2 so that the tape loading as shown in FIG. You are done.

However, such a conventional loading device is difficult to manufacture the winding side loading lever, and furthermore, wear is promoted due to engagement with the loading plate, and thus the loading operation is unstable.

That is, in the structure as described above, since the pinion gear 24c is manufactured using synthetic resin to integrally form the pinion gear 24c with the drive gear 24b in forming the winding-side loading lever 24, it acts as an increase factor of manufacturing cost. In particular, the loading plate 40 is to maintain the relatively thin thickness, yet to perform the function of transmitting the power of the cam gear 31 to the winding side loading lever 24 at a relatively long distance, sufficient strength and flatness Will be required. Therefore, the loading plate 40 is made of a metal plate bar, the rack gear 44 and the pinion gear 24c formed on the loading plate 40 of the pinion gear 24c composed of a synthetic resin material when the engagement As the wear occurs and the wear amount increases, the backlash, which is essentially present at the time of engagement between the gears, increases, so that the reaction time of the winding-side loading lever 24 with respect to the movement of the loading plate 40 is delayed, as well as relative. The power transfer amount is changed, which causes the entire tape loading operation to become unstable.

Therefore, efforts have been made to fabricate the winding-side loading levers made of metal, but the drive gears 24b and the pinion gears 24c are manufactured separately using metal materials, and these are coupled to each other by another coupling means. Since it has to be made in the form, the manufacturing cost is greatly increased, and there is a difficulty in adding a manufacturing process, which has caused many difficulties in manufacturing the winding side loading lever from metal.

Accordingly, the present invention has been made to solve the above problems, the object of which is to reduce the manufacturing cost of the winding-side loading lever and, in particular, by using a metal to minimize the wear of the pinion gear to stabilize the loading operation The present invention provides a winding side loading lever manufacturing method of a VRT tape loading apparatus.

1 is a plan view showing the overall configuration of a conventional V-al

Figure 2 is a bottom view showing the configuration of the conventional tape loading apparatus

Figure 3a is a perspective view showing the configuration of a conventional winding side loading lever

Figure 3b is a cross-sectional view showing the configuration of a conventional Gwicheok loading lever

Figure 4a is a perspective view showing the configuration of an embodiment of the earring side loading lever according to the present invention

Figure 4b is a cross-sectional view showing the configuration of one embodiment of the winding side loading lever according to the present invention

5a to 5d is a process diagram showing the manufacturing process of the winding side loading rubber according to the present invention

Figure 6a is a perspective view showing the configuration of another embodiment of a loading lever according to the present invention

Figure 6b is a cross-sectional view showing the configuration of another embodiment of a loading lever according to the present invention

An object of the present invention has a pinion gear that meshes with a rack gear of a loading plate, and in the V-Cal tape loading device having a winding-side loading lever for driving a winding-side connecting link and a supply-side loading lever, the metal plate is a pinion gear. And a primary step of forming a pinion gear projecting from the metal sheet material by mounting on a primary mold having a corresponding forming groove, and pressing the metal plate portion portion of the upper part of the forming groove by a punch to insert it into the forming groove. The secondary process of placing the first step metal plate on a secondary mold having a driving groove and a forming groove corresponding to the connecting portion, and cutting the external shape of the winding side loading lever from the metal plate using a punch. ; It can be achieved by the manufacturing method of the winding-side loading lever consisting of; hole processing step of processing the connection hole with the support shaft coupling hole and the winding-side connecting link required for the winding-side loading lever cut in the secondary process.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the winding side loading lever manufacturing method of the VRT tape loading apparatus according to the present invention will be described in detail as follows. And the same reference numerals are used to describe the same.)

4A and 4B show the configuration of the winding side loading lever manufactured according to the manufacturing method of the present invention. According to the present invention, the driving gear 110 is formed on one side, and the connecting portion 120 having the boss 104 coupled to the guiding side connecting link 14 to the other side of the driving gear 110 is integrally configured. In addition, the pinion gear 130 protruding to one side is integrally formed at the center of the drive gear 110. According to Figure 4b the pinion gear 130 is configured to protrude to the opposite side by pressing the central portion of the drive gear 110 to one side.

5A to 5D, a manufacturing process of the winding side loading lever 100 according to the present invention is shown. According to this, first, a metal groove M having a flat surface as shown in FIG. 5A corresponds to a pinion gear. When placed on the primary mold (D1) having a pressure, and presses a predetermined position using the punch (P1) from the top, the portion pressurized by the punch is inserted into the forming groove, as shown in Figure 5b and the The first step of forming the pinion gear 130 corresponding to the shape is completed. At this time, the pinion gear 130 should be pressed so as not to be cut from the metal plate.

In addition, according to FIG. 5C, the metal sheet M, which has undergone the first process in which the pinion gear 130 is formed, is formed on the secondary mold D2 having the driving gear 110 and the connecting portion 120 corresponding to each other. And a punch P2 corresponding thereto is cut out from the metal sheet M to cut the external shape of the winding side loading lever.

And, as shown in Figure 5d is required for the connection hole 104 for connecting the support shaft coupling hole 102 and the winding-side connecting link 14 required for the winding-side loading lever cut in the secondary process The completed winding side loading lever 100 is manufactured by performing a hole processing process for processing holes and the like.

According to the present invention, the processing steps are listed for convenience and do not require that the order be constant. For example, the hole processing process can be performed before the primary processing, and the secondary process can also be performed at the first process.

According to the present invention, the pinion gear 130 can be made of a metal material, and can be molded integrally with the winding-side loading lever 100. Therefore, even when the pinion gear 130 is meshed with the rack gear 44 of the metal loading plate 40, the amount of wear is minimized, thereby improving the ability to maintain the required precision, thereby performing a stable loading operation.

On the other hand, Figure 6a and 6b is shown another embodiment of the winding-side loading lever according to the present invention, according to which, the drive gear 210 is formed on one side, the other side of the drive gear 210, the linkage side connection link The connecting portion 220 having a connecting hole 204 coupled with the 14 is integrally configured. In addition, the pinion gear 230 protruding to one side is integrally formed at the central portion of the driving gear 210. According to FIG. 6B, the pinion gear 230 is configured by pressing the center portion of the drive gear 210 to one side but cutting the gear portion only to a portion requiring the gear portion. At this time, the portion where the pinion gear 230 is not formed is inclinedly connected to the drive gear 210, so that the coupling strength can be maintained very strongly.

As described above, the winding-side loading lever manufacturing method of the VRT tape loading apparatus according to the present invention presses the pinion gear to one side of the metal sheet so that the pinion gear having the gear part on the other side is formed to form the metal of the winding-side loading lever. It is possible to configure the material as well as to reduce the manufacturing cost accordingly, in particular, to have the effect of stably performing the loading operation by delaying the progress of wear due to interference with the loading plate.

Claims (3)

A VRC tape loading apparatus having a pinion gear that meshes with a rack gear of a loading plate, and having a winding-side loading lever for driving a winding-side connecting link and a supply-side loading lever, The metal sheet material M is placed on the primary mold D1 having a forming groove corresponding to the pinion gear, and the metal sheet material M on the upper part of the forming groove is pressed into the forming groove by using the punch P1. Forming a pinion gear 130 that protrudes from the metal plate material by the first step; The metal plate M, which has been subjected to the first step, is placed on the secondary mold D2 having a forming groove corresponding to the driving gear 110 and the connecting portion 120, and the metal is punched out using the corresponding punch P1. A secondary step of cutting the external shape of the winding-side loading lever from the plate (M); Manufacturing of the winding side loading lever consisting of; hole processing step of processing the connection hole 104 with the support shaft coupling hole 102 and the winding side connecting link 14 required for the winding side loading lever cut in the secondary process Way. The method of claim 1, wherein the pinion gear 130 is pressed so as not to be cut from the metal plate (M). The method of claim 1, wherein the pinion gear (130) is cut from the metal plate (M), at least part of the manufacturing method of the winding side loading lever, characterized in that to be integrally connected to the metal plate (M).