DVD (Digital Video Disk) optical head capable of being positioned and clamped

Abstract

The utility model discloses a DVD optical head capable of being positioned and clamped, which relates to the technical field of DVD optical heads and comprises a DVD optical head body, a main shaft groove, an auxiliary shaft groove, a circuit board and screws. According to the utility model, through the arrangement of the positioning mechanism and the clamping piece, the positioning rod is clamped to the front end of the heat dissipation inner sleeve in the process of aligning the plug board with the plug groove and pushing the heat dissipation inner sleeve into the mounting groove, so that the heat dissipation inner sleeve and the DVD optical head are positioned and clamped, the lifting ring is pulled outwards to enable the positioning rod to retract into the plug board, and the heat dissipation inner sleeve and the DVD optical head are fixed. According to the DVD optical head, the heat dissipation inner sleeve can be disassembled after being moved outwards, through the connection mode, the heat dissipation inner sleeve and the DVD optical head are easy and convenient to assemble and disassemble, efficiency is improved, meanwhile, positioning of the side, close to the auxiliary shaft groove, of the circuit board is achieved through the clamping piece at one end of the heat dissipation inner sleeve, one screw can be omitted, and the cost is reduced. Therefore, the DVD optical head is more convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to DVD optical head technical field, concretely is a kind of DVD optical head of positionable clamping. BACKGROUND

[0002] DVD optical head is the core component of VCD or DVD drive, mainly responsible for the reading work of data, it can read the data of two layers on DVD disc by adjusting focal length, mainly including semiconductor laser diode (LD) and photodiode (PD), objective lens, polarizing beam splitter prism, quarter wavelength plate element, DVD optical head is irradiated by laser beam to optical disc, and receives the light reflected back, converts it into electrical signal, then after analysis becomes the data required by us. Its internal structure and working principle are relatively complex, but ensure the accuracy and stability of data reading.

[0003] At present, the traditional DVD optical head is generally realized the heat dissipation operation of laser tube by heat dissipation inner sleeve when using, however heat dissipation inner sleeve and DVD optical head are usually connected by multiple screws, which makes the installation and dismounting process of heat dissipation inner sleeve more cumbersome and inconvenient, leading to low efficiency, in addition, the connection between circuit board and DVD optical head is also fastened by multiple screws, which needs to consume more working hours when installing, further increasing the inconvenience of DVD optical head. UTILITARY MODEL

[0004] Therefore, the utility model aims at providing a kind of DVD optical head of positionable clamping to solve the technical problems proposed in the above background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of DVD optical head of positionable clamping, including DVD optical head main body, main shaft slot, auxiliary shaft slot, circuit board and screw, the left side of DVD optical head main body is provided with main shaft slot, the right side of DVD optical head main body is provided with auxiliary shaft slot, the top of main shaft slot is provided with circuit board, the side of the front end of DVD optical head main body close to auxiliary shaft slot is provided with mounting groove, the inboard of mounting groove is provided with heat dissipation inner sleeve, the inboard of heat dissipation inner sleeve is provided with laser tube connected with DVD optical head main body.

[0006] Preferably, the inside of heat dissipation inner sleeve is provided with insertion slot, the front end of DVD optical head main body is provided with insertion plate penetrating insertion slot, the inside of insertion plate is provided with positioning mechanism, the positioning mechanism includes positioning rod, supporting spring and connecting rope, the inboard of insertion plate is movably connected with positioning rod.

[0007] Preferably, the side of circuit board close to main shaft slot is positioned by screw, the side of circuit board close to auxiliary shaft slot is positioned by clamping part.

[0008] Preferably, the clamping parts are composed of a "U" shaped plate and a "6" shaped plate.

[0009] Preferably, the heat dissipation inner sleeve and the DVD optical head main body are connected through a clamping plate and a clamping groove, and the clamping plate and the clamping groove are symmetrically arranged on the central axis of the heat dissipation inner sleeve.

[0010] Preferably, a supporting spring is arranged between the positioning rod and the clamping plate, and an inclined surface is arranged at one end of the positioning rod.

[0011] Preferably, a pull ring is arranged at the front end of the clamping plate, and a connecting rope is arranged between the pull ring and the positioning rod.

[0012] Preferably, four guide rods are arranged at equal angles in the clamping plate, four guide sleeves are arranged at equal angles on the outer surface of the positioning rod, and the positioning rod and the clamping plate are connected through the guide rods and the guide sleeves.

[0013] In summary, the utility model mainly has the following beneficial effects:

[0014] The positioning mechanism and the clamping parts are arranged, the positioning rod and the clamping plate are elastically connected through the supporting spring, and the inclined surface is arranged at one end of the positioning rod, so that the positioning rod is clamped to the front end of the heat dissipation inner sleeve under the action of the supporting spring when the clamping plate and the clamping groove are aligned and the heat dissipation inner sleeve is pushed into the mounting groove, thereby realizing the positioning clamping between the heat dissipation inner sleeve and the DVD optical head, the pull ring and the positioning rod are connected through the connecting rope, the positioning rod can be retracted into the clamping plate by pulling the pull ring outward, the heat dissipation inner sleeve can be separated after moving outward, the installation and dismounting between the heat dissipation inner sleeve and the DVD optical head are relatively simple through the connecting mode, the efficiency is improved, the positioning of the side of the circuit board close to the auxiliary shaft groove is realized through the clamping parts at one end of the heat dissipation inner sleeve, one screw can be saved, the working hours are saved, and the use of the DVD optical head is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the heat dissipation inner sleeve of the utility model;

[0017] Figure 3 It is a three-dimensional cutaway exploded view of the positioning mechanism of the utility model;

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the clamping parts of the utility model.

[0019] In the figure: 1, DVD optical head main body; 2, main shaft groove; 3, auxiliary shaft groove; 4, circuit board; 5, screw; 6, clamping part; 7, heat dissipation inner sleeve; 8, laser tube; 9, positioning mechanism; 901, positioning rod; 902, supporting spring; 903, connecting rope; 904, pull ring; 905, guide rod; 906, guide sleeve; 10, insertion plate; 11, insertion groove; 12, mounting groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model and cannot be understood as a limitation on the utility model.

[0021] The embodiments will be described below according to the overall structure of the utility model.

[0022] A positionable clamping DVD optical head, as shown in Figure 1 and Figure 2 , comprises a DVD optical head main body 1, a main shaft groove 2, an auxiliary shaft groove 3, a circuit board 4 and a screw 5, the left side of the DVD optical head main body 1 is provided with the main shaft groove 2, the right side of the DVD optical head main body 1 is provided with the auxiliary shaft groove 3, the top end of the main shaft groove 2 is provided with the circuit board 4, the front end of the DVD optical head main body 1 is provided with a mounting groove 12 on the side close to the auxiliary shaft groove 3, the inner side of the mounting groove 12 is provided with a heat dissipation inner sleeve 7, the heat dissipation inner sleeve 7 realizes the heat dissipation operation of the laser tube 8, the inner side of the heat dissipation inner sleeve 7 is provided with the laser tube 8 connected with the DVD optical head main body 1 in a penetrating mode;

[0023] As shown in Figures 1-3 , the inner side of the heat dissipation inner sleeve 7 is provided with an insertion groove 11, the front end of the DVD optical head main body 1 is provided with an insertion plate 10 penetrating the insertion groove 11, the inner side of the insertion plate 10 is provided with a positioning mechanism 9, the positioning mechanism 9 comprises a positioning rod 901, a supporting spring 902 and a connecting rope 903, the positioning rod 901 is movably connected to the inner side of the insertion plate 10, the heat dissipation inner sleeve 7 and the DVD optical head main body 1 constitute a clamping structure through the insertion plate 10 and the insertion groove 11, the insertion plate 10 and the insertion groove 11 are both provided with two about the central axis of the heat dissipation inner sleeve 7, the supporting spring 902 constituting an elastic structure is connected between the positioning rod 901 and the insertion plate 10, one end of the positioning rod 901 is provided with an inclined surface, the front end of the insertion plate 10 is provided with a pull ring 904, the pull ring 904 and the positioning rod 901 are connected through the connecting rope 903;

[0024] As shown in Figures 1-3As can be seen, since the positioning rod 901 and the plug-in plate 10 are elastically connected by the support spring 902, and one end of the positioning rod 901 is provided with a bevel, when the plug-in plate 10 is aligned with the plug-in slot 11 and the heat dissipation sleeve 7 is pushed into the mounting slot 12, the positioning rod 901 is locked to the front end of the heat dissipation sleeve 7 under the action of the support spring 902, thereby realizing the positioning and locking between the heat dissipation sleeve 7 and the DVD optical head body 1. Since the lifting ring 904 and the positioning rod 901 are linked by the connecting rope 903, the positioning rod 901 can be retracted into the plug-in plate 10 by pulling the lifting ring 904 outward. After moving the heat dissipation sleeve 7 outward, it can be disassembled. Through this connection method, the installation and disassembly process between the heat dissipation sleeve 7 and the DVD optical head body 1 is relatively simple and efficient.

[0025] See Figure 1 , Figure 2 and Figure 4 It is known that the circuit board 4 is positioned by screws 5 on the side near the main shaft groove 2. The laser tube 8 is provided with a locking member 6 on the outside of the circuit board 4. The circuit board 4 is positioned by locking member 6 on the side near the secondary shaft groove 3. The locking member 6 is composed of a "U"-shaped plate and a "6"-shaped plate. The positioning of the circuit board 4 on the side near the secondary shaft groove 3 is achieved by locking member 6 at one end of the heat dissipation sleeve 7, which reduces the need for screws 5, saves time, and makes the use of the DVD laser head more convenient.

[0026] See Figure 3 It is known that four guide rods 905 are equally spaced inside the plug plate 10, and four guide sleeves 906 are equally spaced on the outer surface of the positioning rod 901 and sleeved on the outside of the guide rods 905. The positioning rod 901 and the plug plate 10 form a sliding structure through the guide rods 905 and the guide sleeves 906, which can support and limit the positioning rod 901, so as to prevent the positioning rod 901 from deviating during the sliding process.

[0027] The working principle of the utility model is: when using the DVD optical head of the utility model, the plug-in plate 10 is aligned with the plug-in slot 11 and the heat dissipation inner sleeve 7 is pushed into the installation slot 12, in the process, the positioning rod 901 is first retracted into the plug-in plate 10 and then clamped to the front end of the heat dissipation inner sleeve 7 under the action of the supporting spring 902, so that the positioning clamping between the heat dissipation inner sleeve 7 and the DVD optical head main body 1 is realized, and the positioning of the side of the circuit board 4 close to the auxiliary shaft slot 3 is realized through the clamping piece 6 at one end of the heat dissipation inner sleeve 7, then the positioning of the side of the circuit board 4 close to the main shaft slot 2 is realized through the screw bolt 5, when it is needed to be disassembled, the positioning rod 901 can be retracted into the plug-in plate 10 by pulling the lifting ring 904 outward, and the disassembly can be realized after the plug-in plate 10 is separated from the plug-in slot 11 by moving the heat dissipation inner sleeve 7 outward, the contents not described in detail in the description belong to the prior art known by the professional technical personnel in the field.

[0028] Although the embodiments of the utility model have been shown and described, the specific embodiments are only the explanation of the utility model, and are not the limitation of the utility model, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable way, the person skilled in the art can make the modification, replacement and change without creative contribution after reading the specification, but as long as it is in the range of the claims of the utility model, it is protected by the patent law.

Claims

1. A positionable snap-fit ​​DVD optical head, comprising a DVD optical head body (1), a main shaft groove (2), a secondary shaft groove (3), a circuit board (4), and screws (5), characterized in that: The DVD optical head body (1) has a main shaft groove (2) on the left side and a secondary shaft groove (3) on the right side. A circuit board (4) is provided at the top of the main shaft groove (2). An installation groove (12) is provided on the front end of the DVD optical head body (1) near the secondary shaft groove (3). A heat dissipation sleeve (7) is provided inside the installation groove (12). A laser tube (8) connected to the DVD optical head body (1) is provided through the inner side of the heat dissipation sleeve (7). The laser tube (8) is provided with a locking member (6) located on the outside of the circuit board (4). The heat dissipation sleeve (7) is provided with a plug-in slot (11). The front end of the DVD optical head body (1) is provided with a plug-in plate (10) that passes through the plug-in slot (11). The plug-in plate (10) is provided with a positioning mechanism (9) inside. The positioning mechanism (9) includes a positioning rod (901), a support spring (902) and a connecting rope (903). The positioning rod (901) is movably connected to the inside of the plug-in plate (10).

2. The DVD optical head that can be positioned and snapped in accordance with claim 1, characterized in that: The circuit board (4) is positioned by screws (5) on the side near the main shaft groove (2), and the circuit board (4) is positioned by a locking piece (6) on the side near the secondary shaft groove (3).

3. A positionable snap-fit ​​DVD optical head according to claim 2, characterized in that: The locking component (6) consists of a "U"-shaped plate and a "6"-shaped plate.

4. A positionable snap-fit ​​DVD optical head according to claim 1, characterized in that: The heat dissipation sleeve (7) and the DVD optical head body (1) are connected by a plug-in plate (10) and a plug-in slot (11). There are two plug-in plates (10) and two plug-in slots (11) symmetrically arranged about the central axis of the heat dissipation sleeve (7).

5. A positionable snap-fit ​​DVD optical head according to claim 1, characterized in that: A support spring (902) forming an elastic structure is connected between the positioning rod (901) and the plug plate (10), and one end of the positioning rod (901) is provided with an inclined surface.

6. A positionable snap-fit ​​DVD optical head according to claim 5, characterized in that: The front end of the plug plate (10) is provided with a lifting ring (904), and a connecting rope (903) is connected between the lifting ring (904) and the positioning rod (901).

7. A positionable snap-fit ​​DVD optical head according to claim 5, characterized in that: The plug-in plate (10) has four guide rods (905) arranged at equal angles inside. The outer surface of the positioning rod (901) has four guide sleeves (906) sleeved on the outside of the guide rods (905) at equal angles. The positioning rod (901) and the plug-in plate (10) form a sliding structure through the guide rods (905) and the guide sleeves (906).

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