JPS647441Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pickup elevating device that raises and lowers the pickup of a record player by raising and lowering a lifter.

Figures 1 to 3 show the configuration of a conventional pickup lifting device, in which 1 is a record player's cabinet board, 2 is a rotating shaft mounted on the cabinet board 1, and 3 is a rotary shaft that can be rotated vertically and horizontally. 4 is a balancer attached to the rear end of the arm 3; 5 is an arcuate rib provided at the bottom of the arm 3 near the rotating shaft 2; 6;
7 is a cylindrical guide tube formed integrally with the cabinet board 1, and 7 is a shaft that is slidably inserted into the guide tube 6. A screw hole 8 is inserted from the upper end surface of the shaft 7 concentrically with the center line. is cut away, and a collar 9 is provided protruding from the lower end of the circumferential wall of the shaft 7.
10 is a notch made in the collar 9, and this notch 1
0 is engaged with a pin 11 protruding from the bottom surface of the cabinet board 1 to prevent the shaft 7 from rotating within the guide tube 6. 12 is a compression spring 13
This lifter 12 is slidably inserted into the upper end of the shaft 7 through the screw hole 8. The lifter 12 can be installed at any height by adjusting the screwing amount of the screw 14 that is screwed into the screw hole 8. Can be adjusted. Reference numeral 15 denotes an elevating plate whose upper surface is composed of two flat surfaces, upper and lower, and an inclined surface connecting these two upper and lower flat surfaces. Reference numeral 16 denotes a compression spring interposed between the cabinet board 1 and the collar 9. The lower end of the shaft 7, which is pushed downward by the compression spring 16, is always in contact with the upper surface of the elevating plate 15.

In the conventional example configured in this way, the elevating plate 15
is moved to the left in the figure against the spring force of the compression spring 16 in FIG. to raise the pick-up, move the lifting plate 15 to the position shown in FIG. 2, and release the compression spring 16.
When the lifter 12 is pushed down together with the shaft 7 by the spring force, the arm 3 is lowered and the pick-up is lowered to the fixed position, and the lifter 12 is separated from the rib 5 and lowered to the fixed position. Furthermore, screw 1
4 to adjust the mounting height of the lifter 12, the rising height of the pick-up can be adjusted. By the way, in order to assemble such a pick-up elevating device, insert the shaft 7 into the guide tube 6 from below the cabinet board 1 so that the notch 10 and the pin 11 are engaged, and then insert the shaft 7 onto the upper surface of the elevating plate 15. After the lifting plate 15 is attached so that the lower end of the shaft 7 comes into contact with it, the lifter 12 must be attached to the upper end of the shaft 7 protruding from the upper end surface of the guide tube 6 with screws 14. That is, the assembly work of the pick-up lifting device has to be done from both the top and bottom of the cabinet board 1, which has the drawback of making the assembly work complicated.

The present invention provides a pickup lifting device which can be assembled only from below the cabinet board in order to eliminate the drawbacks of the above-mentioned conventional example.

4 and 5 show the configuration of an embodiment of the present invention, and the same reference numerals as those in FIGS. 1 to 3 indicate the same parts, and 17 indicates the peripheral wall surface. The shaft 17 is, for example, formed in a regular hexagonal shape, and a screw hole 18 is cut from the upper end surface of the shaft 17 concentrically with the center line. 19 has a protrusion 20 protruding from the circumferential wall surface parallel to the center line, a collar 21 protruding from the lower end of the circumferential wall surface, and the shaft 1
7 is slidably inserted into the lifter, for example, a hexagonal hole 22 is drilled from the lower end surface on the center line, and this lifter 19 has a compression spring 13 interposed between it and the shaft 17. Screw hole 1 of shaft 17
By adjusting the screwing amount of the screw 14 that is screwed into the screw 8, the mounting height can be arbitrarily adjusted. 23
is a guide tube in which a groove 25 into which the protrusion 20 is slidably inserted is recessed parallel to the center line on the inner peripheral wall surface of the cylinder portion 24 into which the lifter 19 is slidably inserted. The cylinder 23 is provided integrally with the cabinet board 1. The lifter 19 is urged downward by a compression spring 16 interposed between the cabinet board 1 and the collar 21.

In this embodiment configured as described above, the compression spring 13 and the shaft 17 are sequentially inserted into the hexagonal hole 22, the shaft 17 is engaged with the screw 14, and the compression spring 16 is attached to the outer periphery. Assembly is completed by inserting the inserted lifter 19 into the guide tube 23 from below the cabinet board 1, and attaching the lifting plate 15 so that the lower end of the shaft 17 contacts the upper surface of the lifting plate 15. In addition, by turning the screw 14 and adjusting the mounting height of the lifter 19, the rising height of the pick-up can be adjusted.
The lifting and lowering operation of the pickup is the same as in the conventional example.

As explained above, according to the present invention, since the assembly work can be performed only from below the cabinet board, there is an advantage that the assembly work is simplified.

[Brief explanation of the drawing]

Fig. 1 is a partial perspective view of a pick-up device equipped with a conventional pick-up elevating device, Fig. 2 is a cross-sectional view of the conventional pick-up elevating device, Fig. 3 is a bottom view of the conventional pick-up elevating device, and Fig. 4 is a booklet. FIG. 5 is an exploded perspective view of an embodiment of the invention. 1... Cabinet board, 6, 23... Guide tube, 7, 17... Shaft, 8, 18... Screw hole, 9, 21... Flam, 12, 19... Lifter, 13, 16... Compression spring , 14...screw, 1
5... Elevating plate, 20... Protrusion, 22... Square hole, 2
4...Cylinder part, 25...Groove.

Claims (1)

[Scope of utility model registration request] In a pick-up elevating device that raises and lowers the pick-up of a record player by raising and lowering a lifter, a protrusion is provided on a circumferential wall surface parallel to the center line, and a cylindrical shaft for adjusting the mounting height is slidably provided. The lifter has a cylindrical or cylindrical shape in which a square hole for insertion is formed concentrically with the center line from the lower end surface, and a groove into which the protrusion of the lifter is slidably inserted allows the lifter to slide freely. 1. A pick-up elevating device characterized by comprising a guide tube recessed parallel to a center line on an inner circumferential wall surface of a cylinder portion to be inserted into the cylinder.