Middle shell for portable Bluetooth sound equipment

Abstract

The utility model relates to the technical field of mold injection molding, in particular to a middle shell for a portable Bluetooth sound box, which comprises a main body, a silica gel layer, a light guide body and a molding insert, the main body is used for bearing a mainboard of the portable Bluetooth sound box, the silica gel layer is coated on the outer edge surface of the main body for increasing friction force, and the light guide body is arranged on the molding insert. And the light guide body is inserted into the molding insert for secondary injection molding of the main body and the silica gel layer. The problems that due to an existing middle shell structure, a produced light guide body is poor in plane light guide, light transmission and light diffusion are effectively solved. The light guide body is produced through two-shot molding, the produced light guide body can be provided with a light guide column with good light transmission and a light gathering shell with high shading performance, and the light guide body is limited and fixed on the mold through the molding insert, so that the positions of the main body and the silica gel layer cannot deviate in the secondary molding process; and meanwhile, due to the protection of the molding insert, the planar light guide and light diffusion effects of the light guide column cannot be influenced after secondary injection molding.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mould injection moulding technical field, concretely relates to a middle shell for portable bluetooth sound. BACKGROUND

[0002] Bluetooth sound is more common play equipment at present, wherein the middle shell is opened in the production process of bluetooth sound and is used for placing the indicator lamp of bluetooth sound state, the indicator lamp is generally located on the circuit board, and the middle shell is provided with a light guide body to display the indicator lamp on the circuit board outside the middle shell.

[0003] The preparation of the light guide body for diffusing the indicator lamp generally adopts single-shot molding or ordinary one-time double-shot molding, but the light guide body produced by the above molding process has the problems of plane light guide, light transmission and poor light scattering. UTILITY MODEL CONTENTS

[0004] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a middle shell for portable bluetooth sound, which effectively solves the problems of plane light guide, light transmission and poor light scattering of the produced light guide body caused by the existing middle shell structure.

[0005] The technical scheme solved by the utility model is a middle shell for portable bluetooth sound, which comprises a main body, a silica gel layer, a light guide body and a molding insert, the main body is used for bearing the main board of the portable bluetooth sound, the silica gel layer is wrapped on the outer edge surface of the main body to increase the friction, and the light guide body is inserted into the molding insert and is used for two-shot molding of the main body and the silica gel layer.

[0006] Preferably, the light guide body comprises a light guide column and a light condensing shell, the light guide column is inserted into the light condensing shell and is installed on the main body, the light condensing shell is a frame with two open sides, and the light inlet side opening is perpendicular to the light outlet side opening.

[0007] Preferably, the light inlet side opening of the light condensing shell is provided with a lamp body accommodating groove.

[0008] Preferably, the molding insert comprises a fixing block, a positioning column and a limiting groove, the limiting groove is arranged on the fixing block and is used for accommodating the light inlet side of the light condensing shell, and the positioning column is arranged on the fixing block and is used for mold positioning.

[0009] Preferably, one end of the light guide column protruding from the light condensing shell is an arc surface with the same arc as the outer edge surface of the silica gel layer.

[0010] Preferably, a first placing groove for accommodating the light condensing shell is arranged on the main body, and a second placing groove for accommodating the light guide column is arranged on the silica gel layer.

[0011] Preferably, the main body includes a middle frame and a silicone support portion, the silicone layer covers the silicone support portion, the silicone support portion has a button slot for accommodating the button, and the silicone layer has a trigger block inserted into the button slot.

[0012] Preferably, the silicone support portion has multiple limiting and fixing grooves, and the silicone layer is formed by two injection molding through the limiting and fixing grooves and the silicone support portion.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention produces a light guide by two-shot molding. Since the two-shot molding process can use different colors and materials, the produced light guide can have a light guide column with good light transmittance and a light-concentrating shell with high light-shielding performance.

[0015] This invention uses a molding insert to limit and fix the light guide body on the mold, so that the main body and the silicone layer will not shift during the secondary molding process. At the same time, due to the protection of the molding insert, the planar light guiding and scattering effect of the light guide column will not be affected after the secondary molding.

[0016] This utility model uses an insertion connection between the molded insert and the focusing shell, which allows the molded insert to be pushed out and removed efficiently using a hydraulic cylinder or air cylinder after molding is completed. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 3 This is a three-dimensional structural diagram of the present invention after the silicone layer has been removed;

[0020] Figure 4 This is a three-dimensional structural diagram of the light guide in this utility model;

[0021] Figure 5 This is a three-dimensional exploded view of the light guide in this utility model;

[0022] Figure 6 This is a three-dimensional exploded structure diagram of this utility model;

[0023] In the diagram, 1-silicone layer; 2-light guide post; 3-focusing shell; 4-lamp body receiving groove; 5-fixing block; 6-positioning post; 7-limiting groove; 8-first placement groove; 9-second placement groove; 10-middle frame; 11-silicone bearing part; 12-button groove; 13-trigger block; 14-limiting fixing groove. Detailed Implementation

[0024] The utility model discloses a specific implementation further in detail below in combination with the drawings.

[0025] Referring to the drawings in the specification Figures 1-6 A middle shell for portable Bluetooth sound, including main body, silica gel layer 1, light guide body and forming insert piece, wherein the circuit board of portable Bluetooth sound is installed in the main body, and the light emitting source on the circuit board of Bluetooth sound is transmitted to the outside through the light guide body, and the forming insert piece is used for positioning during the process of two-shot molding of the main body and silica gel layer 1, and the main body and silica gel layer 1 can fix the light guide body after two-shot molding, and the forming insert piece can be separated from the light guide body by exerting a certain force on the forming insert piece.

[0026] The main body and silica gel layer 1 are two-shot molded, wherein the main body is first one-shot molded through a mold, and then two-shot molded through a gate of the mold for two-shot molding, to form a state that the silica gel layer 1 is wrapped on the main body.

[0027] The main body is provided with a limiting fixing groove 14, and the two-shot molding of the silica gel layer 1 can be better fixed on the main body through the limiting fixing groove 14, and the main body is also provided with a key groove 12, and the silica gel layer 1 forms a trigger block 13 inserted into the key groove 12 through a mold during the process of two-shot molding, and the key groove 12 is used to provide a space for the trigger block 13, so that the trigger block 13 can trigger the key located at the position of the key groove 12.

[0028] The main body is also divided into a middle frame 10 and a silica gel bearing part 11, the silica gel bearing part 11 is arranged outside the middle frame 10, and the silica gel bearing part 11 is used to bear the silica gel layer 1 on one hand, and on the other hand, since the silica gel bearing part 11 increases the thickness of the middle frame 10, corresponding holes for connection are arranged on the silica gel bearing part 11, and the holes on the silica gel bearing part 11 will not affect the strength of the main body due to the thickness of the silica gel bearing part 11, and the limiting fixing groove 14 is also arranged on the silica gel bearing part 11 to better limit the silica gel layer 1.

[0029] The light guide body is divided into a light guide column 2 and a light collecting shell 3, the light guide column 2 is inserted into the light collecting shell 3 and two-shot injection molded between the light guide column 2 and the light collecting shell 3, wherein the light guide column 2 is transparent and easy to transmit light, and the light collecting shell 3 is black and opaque, the main body is also provided with a first placing groove 8 for accommodating the light collecting shell 3, and the silica gel layer 1 is provided with a second placing groove 9 for accommodating the light guide column 2.

[0030] In order to better adhere the light guide column 2 to the silica gel layer 1, the end face of the light guide column 2 located in the second placing groove 9 is an arc surface with the same arc as the outer edge surface of the silica gel layer 1.

[0031] The light condensing shell 3 is hollow with both sides open, but the opening of the light inlet side is perpendicular to the opening of the light outlet side, and the light body accommodating groove 4 for accommodating the lamp beads on the circuit board is arranged on the light inlet side, the lamp beads are placed in the light body accommodating groove 4, and the light emitted by the lamp beads is emitted to the outside of the main body through the light guide column 2.

[0032] The forming insert includes a fixing block 5, a positioning column 6 and a limiting groove 7, the positioning column 6 is fixedly connected with the fixing block 5 and is installed on the mold for positioning of the forming insert, and the limiting groove 7 is arranged on the fixing block 5 and is used for accommodating the light condensing shell 3 of the light guide body, so that the light guide body can always keep position fixed in the process of one-shot forming of the main body and two-shot forming of the silica gel layer 1 through the fixing block 5, the positioning column 6 and the limiting groove 7.

[0033] In the production, the light guide column 2 is first one-shot formed through a suitable mold, the light guide column 2 is two-shot formed with the light condensing shell 3 on the outer side after the one-shot forming, the light guide body is formed, the forming insert is inserted into the light guide body, the forming insert is installed at the corresponding position in the suitable mold, the mold is closed and one-shot forming is carried out, the main body is formed under the action of the mold, the light condensing shell 3 is installed and fixed on the main body, the corresponding gate is replaced after the main body is formed, and the silica gel layer 1 is formed under the action of the mold so that the silica gel layer 1 is covered on the corresponding position of the main body, the limiting and fixing groove 14 arranged on the main body is used for assisting the limiting of the silica gel layer 1, the button groove 12 arranged on the main body is used for accommodating the trigger block 13 on the silica gel layer 1, and the forming insert is pushed out through the hydraulic push rod after the two-shot forming of the silica gel layer 1, so that the middle shell to be assembled is directly obtained.

[0034] The light guide body is produced through two-shot forming, different colors and materials can be used in the two-shot forming process, and therefore the light guide column 2 with good light transmission and the light condensing shell 3 with high light shielding performance can be obtained.

[0035] The light guide body is limited and fixed on the mold through the forming insert, the position of the main body and the silica gel layer 1 will not be deviated in the two-shot forming process, and the plane light guide and light diffusion effect of the light guide column 2 will not be affected after the two-shot forming due to the protection of the forming insert.

[0036] The plug connection between the forming insert and the light condensing shell 3 can be used to efficiently push out and remove the forming insert through the hydraulic cylinder or the pneumatic cylinder after the forming.

Claims

1. A middle case for a portable Bluetooth sound device, the middle case comprising: Including the main body, silica gel layer (1), light guide and forming inserts, the main body is used for portable Bluetooth sound board bearing, the silica gel layer (1) is coated in the main body outer edge surface for increasing friction, the light guide is inserted into the forming inserts for the main body and silica gel layer (1) two injection molding.

2. The middle shell for a portable Bluetooth sound box according to claim 1, wherein: The light guide includes light guide column (2) and light collecting shell (3), the light guide column (2) is inserted into the light collecting shell (3) and is installed on the main body, the light collecting shell (3) is the frame of both sides opening, the light collecting shell (3) light inlet side opening is perpendicular to its light outlet side opening.

3. The middle shell for a portable Bluetooth sound box according to claim 2, wherein: The light inlet side opening of the light collecting shell (3) is provided with a lamp body accommodating groove (4).

4. The middle shell for a portable Bluetooth sound box according to claim 1, wherein: The forming inserts include fixing block (5), positioning column (6) and limiting groove (7), the limiting groove (7) is provided on the fixing block (5) for accommodating the light inlet side of the light collecting shell (3), the positioning column (6) is provided on the fixing block (5) for mold positioning.

5. The middle shell for a portable Bluetooth sound box according to claim 2, wherein: The light guide column (2) is the same as the outer edge surface of the silica gel layer (1) arc arc surface of one end of the light collecting shell (3).

6. The middle shell for a portable Bluetooth sound box according to claim 5, wherein: The main body is provided with a first placing groove (8) for accommodating the light collecting shell (3), and the silica gel layer (1) is provided with a second placing groove (9) for accommodating the light guide column (2).

7. The middle shell for a portable Bluetooth sound box according to claim 6, wherein: The main body includes middle frame (10) and silica gel bearing part (11), the silica gel layer (1) is coated in the silica gel bearing part (11), the silica gel bearing part (11) is provided with a key groove (12) for accommodating the key, and the silica gel layer (1) is provided with a trigger block (13) inserted into the key groove (12).

8. The middle shell for a portable Bluetooth sound box according to claim 7, characterized in that: The silica gel bearing part (11) is provided with a plurality of limiting fixed grooves (14), and the silica gel layer (1) is injection molded with the silica gel bearing part (11) through the limiting fixed grooves (14).

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