KR200198146Y1 - Head drum assembly connect device - Google Patents

Abstract

The present invention discloses a connection device of a head drum assembly. In the conventional connection device of the head drum assembly, the holder is assembled to the screw hole of the lower drum in the vertical direction by tightening the screw, whereby the assemblability is reduced, the number of assembly parts is increased, the production cost is increased, and the handling of the head drum assembly is improved. It was troublesome and difficult. According to the present invention, a wiring hole through which a flexible circuit board is drawn out is formed on the outer circumferential surface of the lower drum constituting the head drum assembly, and fitting grooves having open front and lower surfaces are formed on both sides of the wiring hole, and hinge holes on both inner surfaces of the fitting groove. Is formed. In addition, the upper part of the holder for guiding the flexible circuit board in the vertical direction to connect with the connector of the circuit board is inserted into the fitting groove of the lower drum, and the hinge shaft is inserted into the hinge hole of the lower drum on both upper sides of the holder. The holder is rotated in the vertical and horizontal directions as needed. Therefore, since the holder for guiding the flexible circuit board of the head drum assembly in the vertical direction is assembled to rotate in the vertical and horizontal directions by a simple configuration and structure, the assembling process is easy and simple to improve the assemblability of the product. The reduced number not only reduces the production cost of the product, but also facilitates the handling and improves the workability.

Description

Connection device of head drum assembly

The present invention relates to a head drum assembly, and more particularly, to a connection device of a head drum assembly to improve the connection process of the head drum assembly.

In general, a tape recorder such as a video cassette recorder (VCR) or a camcorder (recorder) records video and audio signals on a tape of a cassette running along a certain traveling path of the odometer by rotating the head drum assembly. Or play it back. In addition, the head drum assembly of the tape recorder adopts a so-called helical scan type in which the video head is rotated obliquely in a state where the tape is rolled and driven.

One example of such a head drum assembly will be described with reference to FIG. 1. In the head drum assembly 10, an upper drum 11 and a lower drum 12 have upper and lower portions of the shaft 13. Are mounted on each. At this time, the upper drum 11 is mounted on the upper and lower portions of the bearing housing 11a by being supported by two bearings 14a and 14b, respectively, and the lower drum 12 is press-fitted to the shaft 13. (壓 入) is mounted.

In addition, in the space between the upper drum 11 and the lower drum 12, the rotor and stator transformers 15 and 16 for transmitting video signals are interposed so as to maintain a constant air gap with each other. The transformers 15 and 16 are formed by winding coils 15b and 16b respectively on channels 15a and 16a. Two or more video heads 17 are assembled on the lower surface of the upper drum 11, and a drum motor 18 is installed on the upper drum 11. Accordingly, while the upper drum 11 is rotated about the shaft 13 as the drum motor 18 is driven, the recording or reproducing of the video signal is performed by the action of the video head 17.

On the other hand, in order to transmit the video signal of the head drum assembly 10, the stator transformer 16 and the connector of the circuit board are connected to each other by using a flexible circuit board. In addition, when the head drum assembly is installed on the upper surface of the deck, a connecting device capable of directly inserting and connecting the connector of the circuit board and the flexible circuit board is used.

As shown in FIGS. 1 and 2, the connection device of the conventional head drum assembly includes a wiring hole 12a formed on one side of the outer circumferential surface of the lower drum 12. Screw holes 12b are formed in both sides of 12a). The pattern 21 of the flexible circuit board 20 is connected to the coil 16b of the stator transformer 16 through the wiring hole 12a of the lower drum 12, and an edge connector (end) is connected to the end of the flexible circuit board 20. Edge connector 22 is formed into a strip type.

In addition, the screw 27 is fastened to the screw hole 12b of the lower drum 12 through the through hole 26 of the holder 25, and is assembled. The guide groove 28 in which the 20 is inserted is formed long in the vertical direction. The cover 29 is mounted in the guide groove 28 of the holder 25 to prevent the flexible circuit board 20 from flowing and escaping.

The head drum assembly 10 is installed on the upper surface of the deck 30, and the guide hole 31 is formed on one side of the upper surface of the deck 30 so that the holder 25 is inserted and guided in a corresponding relationship. A circuit board 35 constituting an electronic circuit of a tape recorder is provided below the deck 30, and a connector (not shown) is positioned coaxially with the guide hole 31 of the deck 30 on the upper surface of the circuit board 35. 36) is mounted. An edge connector 22 of the flexible circuit board 20 is connected to the connector 36 of the circuit board 35 while the holder 25 is fitted through the guide hole 31 of the deck 30.

However, in the conventional connection device of the head drum assembly as described above, the lower drum is fastened by the screw 27 being fastened to the screw hole 12b of the lower drum 12 through the through hole 26 of the holder 25. Since the holder 25 is assembled to the outer circumferential surface of (12) downward in the vertical direction, the assembly process is complicated, the assembly of the product is lowered, there is a problem that the production cost of the product is increased by increasing the number of assembly parts.

In addition, there is a problem that the handling of the head drum assembly 10 becomes very cumbersome and difficult, and the workability is significantly reduced. That is, as the holder 25 is vertically erected on the outer circumferential surface of the lower drum 12, it is difficult to vertically erect the head drum assembly 10. In addition, since the holder 25 is easily broken, for example sprinkled, during the handling of the head drum assembly 10, great care is required in handling the head drum assembly 10. In addition, the head drum assembly 10 is supplied to the assembly line of the tape recorder as a single component through a separate assembly process, so that the head drum assembly 10 may be supplied to the assembly line of the tape recorder. The use of the holder 25 also makes it very difficult to load the head drum assembly 10 into a loading box in storage and transport.

The present invention is devised to solve the conventional problems as described above, the object of the present invention is to improve the assembly of the product by a simple configuration and structure, the number of assembly parts is reduced to reduce the production cost of the product In addition, the present invention provides a connection device for a head drum assembly in which handling is easy and simple to improve workability.

1 is a cross-sectional view showing a head drum assembly of a typical tape recorder;

Figure 2 is a perspective view showing a connection device of a conventional head drum assembly,

3 is a perspective view showing a connection device of the head drum assembly according to the present invention,

4a and 4b are cross-sectional views showing the operating state of the connection device of the head drum assembly according to the present invention.

♣ Explanation of symbols for the main parts of the drawing ♣

10: Head Drum Assembly 11: Upper Drum

12: lower drum 12a: wiring hole

20: flexible circuit board 22: edge connector

30: Deck 31: Guide Hole

35: circuit board 36: connector

40: fitting groove 41: hinge hole

50: holder 51: hinge axis

Features of the present invention for achieving the above object is a head drum assembly in which a rotor and a stator transformer are interposed between an upper drum and a lower drum, and a flexible circuit board is connected to the state transformer through wiring holes of the lower drum. A holder for guiding the flexible circuit board in a vertical direction through the guide hole of the deck; In a connecting device of a head drum assembly composed of a connector mounted on an upper surface of a circuit board such that an edge connector of a flexible circuit board is connected, the lower drum has a front and bottom fitting grooves formed at both sides of the wiring hole. Hinge holes are formed on both inner surfaces of the groove, respectively, and upper portions of the holders are fitted into the lower drum fitting grooves so as to correspond to each other in the hinge holes of the lower drums so as to be rotatable in the vertical and horizontal directions. The hinge shaft is in the connecting device of the head drum assembly, respectively.

Hereinafter, a preferred embodiment of a connection device of a head drum assembly according to the present invention will be described in detail with reference to the accompanying drawings.

3 to 4A and 4B are views for explaining the connection device of the head drum assembly according to the present invention, the basic configuration of the head drum assembly described in Figure 1 will be described with the same reference numerals.

First, referring to Figures 1 and 3, the head drum assembly 10 is the upper drum 11 and the lower drum 12 is mounted on the upper and lower portions of the shaft 13, respectively, the upper drum 11 In the space between the lower drum 12 and the rotor and stator transformers 15 and 16 for transmitting signals are interposed so as to maintain a constant gap with each other. The rotor and stator transformers 15 and 16 are constituted by coils 15b and 16b wound around channels 15a and 16a, respectively.

Then, two or more video heads 17 are assembled on the lower surface of the upper drum 11, the drum motor 17 is installed on the upper drum 11, and the shaft is driven by the drum motor 17. The upper drum 11 is rotated together with 13 to perform recording or reproduction of a video signal by the action of the video head 17.

As shown in FIG. 3 and FIG. 4A, the wiring hole 12a is formed in one side of the outer peripheral surface of the lower drum 12, and the fitting groove 20 with the front and lower surface opening is formed in the both sides of the wiring hole 12a. The lower drum 12 has hinge holes 41 formed on both inner surfaces of the fitting groove 40 so as to correspond to each other. The pattern 21 of the flexible circuit board 20 is connected to the coil 16b of the stator transformer 16 through the wiring hole 12a of the lower drum 12, and an edge connector (end) is connected to the end of the flexible circuit board 20. 22) is formed into a styroform. Here, the coil 16b of the stator transformer 16 is connected to the pattern 21 of the flexible circuit board 20 by soldering, and the fitting groove 40 and the hinge hole of the lower drum 12 are connected to each other. 41) can be produced by diecasting.

On the other hand, the upper portion of the holder 50 is fitted into the fitting groove 20 of the lower drum 12, the hinge shaft 51 (hinge shaft 51) is formed on each of the upper sides of the holder 50, the holder ( The hinge shaft 51 of the 50 is fitted in a relationship corresponding to each other in the hinge hole 42 of the lower drum 12, thereby allowing the holder 50 to be rotated in the vertical and horizontal directions. The guide groove 52 in which the flexible circuit board 20 is inserted and positioned in the center of the front surface of the holder 50 is elongated in the vertical direction, and the flexible groove of the flexible circuit board 20 flows in the guide groove 52 of the holder 50. And the cover 53 is mounted to prevent the departure.

In addition, the head drum assembly 10 is installed on the upper surface of the deck 30 described above with reference to FIG. 1, and the guide hole 31 is inserted into one side of the upper surface of the deck 30 so that the holders 50 are guided in correspondence with each other. ) Is formed. A circuit board 35 constituting an electronic circuit of a tape recorder is provided below the deck 30, and a connector (not shown) is positioned coaxially with the guide hole 31 of the deck 30 on the upper surface of the circuit board 35. 36) is mounted. The edge connector 22 of the flexible circuit board 20 is connected to the connector 36 of the circuit board 35 while the holder 25 is fitted through the guide hole 31 of the deck 30. The assembly 10 and the circuit board 20 are connected in circuit.

Referring to the operation of the connection device of the head drum assembly according to the present invention as described above are as follows.

As shown in FIG. 4A, after the coil 16b of the stator transformer 16 and the pattern 21 of the flexible circuit board 20 are connected, the flexible circuit board is connected through the wiring hole 12a of the lower drum 12. 20 is drawn out of the lower drum 12. Then, the hinge shaft 51 of the holder 50 corresponds to each other in the hinge hole 41 of the lower drum 12 while inserting the upper portion of the holder 50 into the fitting groove 40 of the lower drum 12. Insert into. Accordingly, the holder 50 is rotatable in a vertical and horizontal state about the hinge axis 51.

In this state, the flexible circuit board 20 is inserted into the guide groove 52 of the holder 50, and the cover 53 is assembled to the guide groove 52 of the holder 50. Flow and escape of the is effectively prevented. When the head drum assembly 10 is installed on the upper surface of the deck 30, the holder 50 is rotated about the hinge shaft 51 fitted in the hinge hole 41 of the lower drum 12 in the vertical direction. Erect. At this time, the back of the holder 50 is supported on the front of the fitting groove 40, while the rotation of the holder 50 is regulated to be erect vertically.

In addition, in the state in which the holder 50 is vertically set downward from the outer circumferential surface of the lower drum 12, the deck 30 is inserted through the guide hole 31 of the deck 30 by inserting the lower end of the holder 50. When the head drum assembly 10 is installed on the upper surface of the head drum assembly, the lower end of the holder 50 passes through the guide hole 31 of the deck 30 so that the edge connector 42 of the flexible circuit board 20 becomes the circuit board. It is correctly guided and connected to the connector 36 of (35).

As such, the flexible circuit board 20 can be connected by a simple structure and structure in which the hinge shaft 51 of the holder 50 is fitted into the hinge hole 41 of the lower drum 12. The assembling process is easy and simple, and the assemblability of the product is improved. In addition, since the screw 27, which has been conventionally used, is unnecessary and the number of assembly parts is relatively reduced, the production cost of the product is reduced.

When the head drum assembly 10 is handled, that is, when the head drum assembly 10 is stored in a storage box or the like, the holder 50 is centered around the hinge hole 41 of the lower drum 12. Rotate horizontally. In short, the holder 50 can be positioned in the vertical and horizontal state depending on the needs of work or handling. Therefore, the head drum assembly 10 is not subjected to the interference of the holder 50 and can be loaded by lamination so that the handling of the head drum assembly 10 is very easy and simple, and the breakage of the holder 50 is prevented. You can do it. As a result, the connection process of the head drum assembly 10 is improved to improve workability.

On the other hand, the above-described embodiment is merely to describe one preferred embodiment of the present invention, the scope of application of the present invention is not limited to such, and can be changed appropriately within the scope of the same idea. For example, the shape and structure of each component specifically shown in the embodiment of the present invention can be modified.

As described above, according to the connecting device of the head drum assembly according to the present invention, the holder for guiding the flexible circuit board of the head drum assembly in the vertical direction is assembled to rotate in the vertical and horizontal directions by a simple configuration and structure, The process is easy and simple to improve the assembly of the product, the number of assembly parts is reduced not only to reduce the production cost of the product, but also easy to handle and simple to improve the workability.

Claims (1)

A head drum assembly in which a rotor and a stator transformer are interposed in an inner space between the upper drum and the lower drum, and a flexible circuit board is connected to the state transformer through the wiring hole of the lower drum; In the connecting device of the head drum assembly comprising a holder guided in the vertical direction through the connector and a connector mounted on the upper surface of the circuit board so that the edge connector of the flexible circuit board is connected, The lower drum 12 is provided with fitting grooves 20 having a front surface and a bottom surface formed at both sides of the wiring hole 12a. Hinge holes 41 which are coaxial with each other are formed on both inner surfaces of the fitting groove 40, respectively. Hinge shafts 51 are formed on both sides of the holder 50 so as to be fitted into the hinge holes 41 of the lower drum 12 so as to be rotated in the vertical and horizontal directions, respectively. The connecting device of the head drum assembly.