CN219658380U

CN219658380U - Record machine

Info

Publication number: CN219658380U
Application number: CN202320809530.5U
Authority: CN
Inventors: 严伟军; 何浪; 林泽聪
Original assignee: Shenzhen Atx Technology Co ltd
Current assignee: Shenzhen Atx Technology Co ltd
Priority date: 2023-04-04
Filing date: 2023-04-04
Publication date: 2023-09-08
Anticipated expiration: 2033-04-04

Abstract

The utility model discloses a disc player, which comprises a base and a turntable arranged on the base and used for placing a disc, wherein a grating is arranged on the bottom surface of the turntable, an optical coupler which corresponds to the grating and is used for detecting the rotating speed of the turntable is fixedly arranged on the base, the grating is in a circular sheet shape, a connecting hole used for allowing a rotating shaft of the turntable to pass through is arranged at the circle center of the grating, the grating and the turntable are concentrically arranged, a plurality of through holes are uniformly distributed at the edge of the grating, the through holes axially extend along the turntable, and the through holes are distributed in a circumferential array by taking the circle center of the grating as the center. The grating of the record machine provided by the utility model is in a circular sheet shape, and can be manufactured by adopting a knife die punching and cutting process, so that the cost is low, the processing precision is high, the mass production is convenient, and the production cost is further reduced.

Description

Record machine

Technical Field

The utility model relates to the technical field of record players, in particular to a record player.

Background

Another name of record players is phonographs, which are original playback devices that store sound in arcuate grooves that are acoustically carved in the plane of the record, the record being placed on a turntable, rotating under a stylus, the phonograph record being able to be reproduced in large quantities for a longer period of time than most cylindrical recording media.

The Chinese patent of publication No. CN106297830B discloses a record player convenient for speed measurement, which comprises a base body, wherein a driving motor assembly and a turntable which is connected with the driving motor assembly and is used for placing a record are arranged in the base body, a grating is arranged on the turntable, an optocoupler which corresponds to the grating and is used for detecting the rotating speed of the turntable is fixedly arranged on the base body, the grating is arranged on the bottom surface of the turntable, the turntable is annular, a plurality of convex teeth are uniformly arranged on the grating along the annular, the extending direction of the convex teeth is perpendicular to the bottom surface of the turntable, and a groove is arranged between every two adjacent convex teeth. The record machine convenient for speed measurement is provided with a device for detecting the rotation speed of the record, and can accurately control the rotation speed of the record according to the requirement, so that wonderful music can be modulated.

However, the grating in the record player is an injection molding piece, and the record player can be produced only by an injection mold, so that the cost is high, and the cost of the record player is not reduced.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides a record player to solve the problem of higher grating cost of the existing record player which is convenient for speed measurement.

The utility model provides a record machine, includes the pedestal and installs be used for placing the carousel of record on the pedestal, the carousel bottom surface is provided with the grating, fixed be equipped with on the pedestal with the grating corresponds, be used for detecting the opto-coupler of carousel rotational speed, the grating is circular slice, the centre of a circle department of grating has the connecting hole that is used for the pivot of carousel passes, the grating with the concentric setting of carousel, the border evenly distributed of grating has a plurality of through-holes, the through-hole axial is followed the radial extension of carousel sets up, a plurality of the through-hole with the centre of a circle of grating is circumference array distribution as the center.

Further, the grating is a paper sheet.

Further, the grating is a plastic sheet.

Further, the optocoupler is a reflective optocoupler.

Further, the base is provided with a mounting hole, and the optocoupler is mounted in the mounting hole.

Further, a plurality of connecting pieces are fixedly mounted on the upper surface of the grating, the connecting pieces are of a cube-shaped cavity structure, two ends of each connecting piece are open, a plurality of connecting pieces are distributed in a circumferential array, and the upper surfaces of the connecting pieces are fixedly connected to the bottom surface of the turntable.

Further, the bottom surface of the connecting piece is connected with the upper surface of the grating in an adhesion way; the upper surface of the connecting piece is connected with the bottom surface of the turntable in an adhesion manner.

Further, a friction surface matched with the transmission belt is arranged on the outer circumferential surface of the rotary table.

Further, the grating is manufactured by punching and cutting through a knife die.

The beneficial effects of the utility model are as follows:

the grating of the record machine provided by the utility model is in a circular sheet shape, and can be manufactured by adopting a knife die punching and cutting process, so that the cost is low, the processing precision is high, the mass production is convenient, and the production cost is further reduced.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

FIG. 1 is a perspective view of a record player according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a record player according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a seat according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a grating structure according to an embodiment of the present utility model;

fig. 5 is a schematic diagram of a grating according to an embodiment of the present utility model.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, 2 and 3, the utility model provides a record player, which comprises a base 1, wherein a driving motor assembly 2 and a turntable 3 which is in transmission connection with the driving motor assembly 2 and is used for placing a record are arranged in the base 1. The turntable 3 is rotatably arranged in the seat body 1 through a rotating shaft, and a grating 4 is arranged on the bottom surface of the turntable 3. An optocoupler 5 which corresponds to the grating 4 and is used for detecting the rotating speed of the turntable 3 is fixedly arranged on the base body 1.

Specifically, as shown in fig. 4 and 5, the grating 4 is in a circular sheet shape, the center of the grating 4 is provided with a connecting hole 6 for the rotating shaft of the turntable 3 to pass through, the grating 4 and the turntable 3 are concentrically arranged, a plurality of through holes 7 are uniformly distributed on the edge of the grating 4, the through holes 7 axially extend along the turntable 3, and the through holes 7 are distributed in a circumferential array by taking the center of the grating 4 as the center.

In this embodiment, the grating 4 may be a paper sheet or a plastic sheet, and the thickness of the grating 4 is about 0.65 mm. The grating 4 is manufactured by punching and cutting through a cutting die, so that the cost is low, the processing precision is high, the mass production is convenient, and the production cost is further reduced.

Because circular boss is arranged on the bottom surface of the turntable 3, the grating 4 is arranged at the bottom of the boss, a plurality of connecting pieces 9 are fixedly arranged on the upper surface of the grating 4, the connecting pieces 9 are of a cube-shaped cavity structure, the height is about 11mm, and two ends of the connecting pieces are open. The plurality of connecting pieces 9 are distributed in a circumferential array, the upper surfaces of the connecting pieces 9 are fixedly connected to the bottom surface of the rotary table 3, and therefore bosses on the bottom surface of the rotary table 3 can be arranged in a circular space formed by encircling the plurality of connecting pieces 9. The connecting piece 9 can be formed by folding paper sheets or plastic sheets. The bottom surface of the connecting piece 9 is connected with the upper surface of the grating 4 through 3M glue adhesion; the upper surface of the connecting piece 9 is connected with the bottom surface of the turntable 3 through 3M glue adhesion.

As shown in fig. 2 and 3, the optical coupler 5 is a reflective optical coupler, the base 1 is provided with a mounting hole 8, and the optical coupler 5 is fixedly mounted in the mounting hole 8. When the grating 4 rotates along with the turntable 3, light emitted by the light emitter of the optical coupler 5 is reflected by the grating surface between two adjacent through holes 7, and photocurrent is generated after the light receiver of the optical coupler 5 receives the reflected light and flows out of the output end, so that 'electric-optical-electric' conversion is realized. To reduce the reflectivity of the bottom surface of the turntable 3, the bottom surface of the turntable 3 may be sprayed in black.

The outer circumferential surface of the turntable 3 is provided with a friction surface 10 matched with a transmission belt, the friction surface 10 has a certain width, the width is approximately the same as that of the transmission belt, the transmission belt is sleeved on the friction surface 10, and the turntable 3 is driven by a driving motor component 2 to operate through the transmission belt, so that the belt transmission noise is low, and the perfect tone quality of the record machine is ensured.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.

Claims

1. The utility model provides a record machine, includes pedestal (1) and installs be used for placing carousel (3) of record on pedestal (1), carousel (3) bottom surface is provided with grating (4), fixed on pedestal (1) be equipped with grating (4) correspond, be used for detecting opto-coupler (5) of carousel (3) rotational speed, its characterized in that: the optical grating (4) is circular platy, the centre of a circle department of optical grating (4) has the connecting hole (6) that are used for the pivot of carousel (3) passes, optical grating (4) with carousel (3) concentric setting, the border evenly distributed of optical grating (4) has a plurality of through-holes (7), through-hole (7) axial is followed carousel (3) radial extension sets up, and a plurality of through-hole (7) are in the centre of a circle of optical grating (4) is the circumference array and distributes.

2. A record player as recited in claim 1, wherein: the grating (4) is a paper sheet.

3. A record player as recited in claim 1, wherein: the grating (4) is a plastic sheet.

4. A record player as recited in claim 1, wherein: the optical coupler (5) is a reflective optical coupler.

5. A record player as recited in claim 1, wherein: the base body (1) is provided with a mounting hole (8), and the optocoupler (5) is mounted in the mounting hole (8).

6. A record player as recited in claim 1, wherein: the optical grating is characterized in that a plurality of connecting pieces (9) are fixedly mounted on the upper surface of the optical grating (4), the connecting pieces (9) are of a cube-shaped cavity structure, two ends of each connecting piece are open, the connecting pieces (9) are distributed in a circumferential array, and the upper surfaces of the connecting pieces (9) are fixedly connected to the bottom surface of the rotary disc (3).

7. A record player as recited in claim 6, wherein: the bottom surface of the connecting piece (9) is connected with the upper surface of the grating (4) in an adhesion way; the upper surface of the connecting piece (9) is connected with the bottom surface of the turntable (3) in an adhesion way.

8. A record player as recited in claim 1, wherein: the outer circumferential surface of the rotary table (3) is provided with a friction surface (10) matched with the transmission belt.