CN220858390U

CN220858390U - Metal shell type sounding unit

Info

Publication number: CN220858390U
Application number: CN202322347679.9U
Authority: CN
Inventors: 陈斌
Original assignee: Suzhou Jushengyuan Electronics Co ltd
Current assignee: Suzhou Jushengyuan Electronics Co ltd
Priority date: 2023-08-31
Filing date: 2023-08-31
Publication date: 2024-04-26
Anticipated expiration: 2033-08-31

Abstract

The utility model relates to a metal shell type sounding unit which comprises a metal shell and a coil, wherein a PCB (printed circuit board) is arranged on one side, located at a sounding component, inside the metal shell, of the metal shell, an anode and a cathode of the coil are respectively connected with the PCB through wires, a bendable positioning strip is arranged on one side of the PCB, the PCB is located between the positioning strip and the coil, mounting through holes are respectively formed in two side walls of the metal shell, two ends of the positioning strip extend out of the metal shell through the mounting through holes in the two side walls, one end, located at one side of the metal shell, of the positioning strip is a fixed end, one end, located at the other side, of the metal shell is a free end, two protection sleeves are further arranged inside the metal shell, the two protection sleeves are respectively located at two sides of the positioning strip, two outgoing wires are arranged on the PCB, and the two outgoing wires respectively penetrate through the two protection sleeves. When the sounding unit is provided with the positioning strip, the positioning strip can be effectively prevented from damaging the circuit led out from the PCB.

Description

Metal shell type sounding unit

Technical Field

The utility model relates to the field of sound production unit manufacturing, in particular to a metal shell type sound production unit.

Background

The metal shell type sound generating unit is a sound generating unit with a metal shell. Inside the metal casing, be provided with the sounding subassembly of balanced armature class etc. type, sounding subassembly generally can include the coil, and the positive negative pole of coil passes through the wire and links to each other with the PCB board, is provided with the lead-out wire on the PCB board. At present, the sounding unit is generally convenient to wear, and a bendable positioning strip is also used for positioning on corresponding ear bones around the outer end of an ear canal after bending, the main body part of the sounding unit is positioned in the ear canal, and the main body part of the sounding unit needs to overcome the acting force of the bone of the ear to the positioning strip when coming out of the ear canal. The main body portion of the sound generating unit is not easily coming out of the ear canal. However, when the positioning strip is assembled on the metal shell, the positioning strip needs to pass through the metal shell, the lead-out wire arranged on the PCB is arranged in the metal shell, and the extending direction of the lead-out wire is not fixed, so that the lead-out wire can be positioned on the passing route of the positioning strip, and the positioning strip can touch the lead-out wire when the positioning strip is installed, so that the lead-out wire is damaged.

Disclosure of utility model

Based on this, a metal shell sound generating unit is provided. When the sounding unit is provided with the positioning strip, the positioning strip can be effectively prevented from damaging the circuit led out from the PCB.

The embodiment of the application provides a metal shell type sounding unit, which comprises a metal shell, wherein a sounding component is arranged in the metal shell, the sounding component comprises a coil, a PCB (printed circuit board) is arranged on one side of the sounding component in the metal shell, the positive pole and the negative pole of the coil are respectively connected with the PCB through wires, a bendable positioning strip is arranged on one side of the PCB, the PCB is positioned between the positioning strip and the coil, mounting through holes are respectively formed in two side walls of the metal shell, two ends of the positioning strip extend out of the metal shell through the mounting through holes in the two side walls, one end of the positioning strip, which is positioned on one side of the metal shell, is a fixed end, one end of the positioning strip, which is positioned on the other side of the metal shell, is a free end, two protective sleeves are also arranged in the metal shell, the two protective sleeves are respectively positioned on two sides of the positioning strip, two outgoing wires are respectively arranged on the PCB, and the two outgoing wires respectively pass through the two protective sleeves.

In one embodiment, the metal shell comprises a first shell and a second shell, the first shell and the second shell are buckled with each other, a mounting through hole is formed in the first shell, and a mounting through hole is formed in the second shell.

In one embodiment, the PCB board is a grid-like PCB board.

In one embodiment, the grid-shaped PCB board is provided with a slot, and one end of the protection sleeve is located in the slot of the grid-shaped PCB board.

In one embodiment, the fixed end of the positioning strip is a chuck portion.

In one embodiment, the protection sleeve is fixed in a guide groove in the plastic shell, a yielding through hole is formed in the plastic shell and used for allowing the positioning strip to pass through, one part of the plastic shell is located inside the metal shell, the other part of the plastic shell is located outside the metal shell, and the tail end of the plastic shell is used for being connected with an external transmission line.

In one embodiment, the positioning strip has a first section and a second section, the first section and the second section have a certain included angle, one end of the first section is the fixed end, and one end of the second section is the free end.

In one embodiment, a portion of the first section of the locating bar is located inside the metal shell and the second section of the locating bar is located outside the metal shell.

The beneficial effects of the application are as follows:

According to the application, the two protection sleeves are arranged on two sides of the passing route of the positioning strip, so that on one hand, the protection sleeves can be used for guiding the extending route of the outgoing line and fixing the extending direction of the outgoing line of the PCB board, so that the outgoing line avoids the passing route of the positioning strip, and on the other hand, because the outgoing line is arranged inside the protection sleeves, even if the positioning strip deviates in the process of passing through the metal shell, the positioning strip can only strike the protection sleeve and can not directly strike the outgoing line. So that the lead-out wires can be effectively prevented from being damaged.

Drawings

Fig. 1 is a schematic diagram illustrating an internal structure of a metal shell type sound generating unit according to an embodiment of the present application. Wherein, the two sides of the positioning strip are respectively provided with a protective sleeve.

Fig. 2 is a schematic view of a locating bar passing through a metal housing according to an embodiment of the present application.

Fig. 3 is a schematic view of a first housing according to an embodiment of the present application.

Fig. 4 is a schematic view of a second housing according to an embodiment of the present application.

Fig. 5 is a schematic view of a positioning bar according to an embodiment of the present application.

Fig. 6 is a schematic view of the protection sleeve according to the embodiment of the present application being fixed in a plastic shell, the plastic shell being connected with a metal shell.

Fig. 7 is an exploded view of a plastic housing with a protective sleeve according to an embodiment of the present application.

Wherein:

101. a metal housing; 102. A coil; 103. A PCB board; 104. A positioning strip; 105. A protective sleeve;

101a, a first housing; 101b, a second housing; 104a, a chuck part; 104b, a first section; 104c, a second section; 106. Mounting through holes; 107. A plastic shell; 108. A guide groove; 107a, an upper shell; 107b, lower shell; 109. And giving way to the through hole.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings.

As shown in fig. 1 to 5, an embodiment of the present application provides a metal-case type sound generating unit including a metal case 101, and a sound generating assembly, which may be an existing sound generating assembly of a balanced armature or the like, is provided inside the metal case 101. The sound production assembly comprises a coil 102, a PCB (printed circuit board) 103 is arranged on one side of the sound production assembly inside a metal shell 101, the positive electrode and the negative electrode of the coil 102 are respectively connected with the PCB 103 through wires, a bendable positioning strip 104 is arranged on one side of the PCB 103, and the positioning strip 104 can be made of TPE (thermoplastic elastomer) materials or silica gel, TPU (thermoplastic polyurethane), PU (polyurethane) and other materials. The positioning strip 104 can be linear or curved with a certain radian. The method can be specifically set according to the requirements. The PCB 103 is located between the positioning bar 104 and the coil 102. This also protects the wires connected to the coil 102, since the PCB 103 blocks the wires connected to the coil 102 when the positioning strip 104 passes through the metal housing 101, so that the positioning strip 104 cannot substantially touch the wires connected to the coil 102. The two side walls of the metal shell are respectively provided with mounting through holes 106, and the two mounting through holes 106 are used for the positioning strip 104 to penetrate through the metal shell 101, that is, one end of the positioning strip 104 can penetrate into the metal shell 101 from one mounting through hole 106 and then penetrate out from the other mounting through hole 106. Both ends of the positioning strip 104 extend to the outer side of the metal shell 101 through mounting through holes 106 on both side walls. The end of the positioning strip 104 located at one side of the metal housing 101 is a fixed end, and the fixed end is used for being fixed on the metal housing 101, for example, fixed by bonding or the like. The one end that location strip 104 is located the metal casing 101 opposite side is the free end, the inside two protection sleeve 105 that still is provided with of metal casing 101, two protection sleeve 105 are located location strip 104 both sides respectively, be provided with two lead-out wires on the PCB board 103, two lead-out wires pass two protection sleeve 105 respectively.

In the above-mentioned structure of the present application, when assembled, two opposite side walls of the metal housing 101 are respectively provided with mounting through holes 106, and a path between the two mounting through holes 106 is a passing path of the positioning strip 104. Protective sleeves 105 are respectively arranged on two sides of the path, and a line led out from the PCB 103 passes through the corresponding protective sleeve 105. When the positioning bar 104 is mounted, the free end of the positioning bar 104 is inserted into the metal housing 101 through one mounting through hole 106, and then is inserted out through the other mounting through hole 106. The fixed end of the positioning strip 104 may be fixed to the metal housing 101 by means of bonding or the like.

It should be noted that, the connection modes of the components commonly used in the field of manufacturing the sounding unit are generally clamping connection, screw connection, glue bonding and the like.

In one embodiment, the fixed end of the positioning strip 104 is a chuck portion 104a. The chuck portion 104a may be a block-shaped body, and the chuck portion 104a and other portions of the positioning strip 104 may be integrally formed. The body portion of the spacer 104 may be a linear structure and the cross-sectional area may be circular, oval, square, etc. The card head portion 104a is larger in size than the corresponding mounting through hole 106 so that the card head portion 104a cannot pass through the corresponding mounting through hole 106.

In one embodiment, as shown in fig. 2 and fig. 5, the positioning strip 104 has a first section 104b and a second section 104c, the end of the first section 104b is provided with the chuck portion 104a, the first section 104b and the second section 104c have a certain included angle, at least a part of the first section 104b is located inside the metal housing 101, the second section 104c is located outside the metal housing 101, and one end of the second section 104c is a free end.

In one embodiment, as shown in fig. 3 and fig. 4, the metal housing 101 includes a first housing 101a and a second housing 101b, where the first housing 101a and the second housing 101b are fastened to each other, a mounting through hole 106 is provided on the first housing 101a, and a mounting through hole 106 is provided on the second housing 101 b. Specifically, the free end of the positioning bar 104 may be penetrated by the mounting through hole 106 of the first housing 101a and penetrated out of the mounting through hole 106 of the second housing 101 b.

In one embodiment, the PCB 103 is a grid-shaped PCB 103. The grid-shaped PCB 103 is an existing component, which has a relatively large thickness, is not easy to be damaged under the action of external force, and is relatively stable and firm to be installed in the metal casing 101.

In one embodiment, the grid-shaped PCB 103 is provided with a slot, and one end of the protection sleeve 105 is located in the slot of the grid-shaped PCB 103. If the protective sleeve 105 is disposed within a plastic housing 107, the front end of the plastic housing 107 is positioned within the slot along with the front end of the protective sleeve 105.

In one embodiment, as shown in fig. 6 and 7, the protection sleeve 105 is fixed in a guide groove 108 in the plastic housing 107, and the plastic housing 107 may include an upper housing 107a and a lower housing 107b, where the upper housing 107a and the lower housing 107b are bonded together by glue. The plastic shell 107 is provided with a yielding through hole 109, the yielding through hole 109 and the guiding groove 108 are separated from each other and are not communicated with each other, the yielding through hole 109 is used for allowing the positioning strip 104 to pass through, one part of the plastic shell 107 is located inside the metal shell 101, the other part of the plastic shell 107 is located outside the metal shell 101, and the tail end of the plastic shell 107 is used for connecting an external transmission line. The plastic housing 107 may be attached to the metal housing 101 by glue bonding or the like.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The utility model provides a metal casing formula sound production unit, includes the metal casing, the inside sound production subassembly that is provided with of metal casing, the sound production subassembly includes the coil, its characterized in that, the inside one side that is located the sound production subassembly of metal casing is provided with the PCB board, anodal and the negative pole of coil pass through the wire respectively with the PCB board links to each other, one side of PCB board is provided with flexible location strip, the PCB board is located between location strip and the coil, two lateral walls of metal casing are provided with the installation through-hole respectively, the both ends of location strip stretch out to the outside of metal casing through the installation through-hole on two lateral walls, the one end that the location strip is located one side of the metal casing is the stiff end, the one end that the location strip is located the metal casing opposite side is the free end, the inside two protective case that still is provided with of metal casing, two protective case are located the location strip both sides respectively, be provided with two lead-outs on the PCB board, two lead-outs pass two protective case respectively.

2. The metal shell type sound generating unit according to claim 1, wherein the metal shell comprises a first shell and a second shell, the first shell and the second shell are buckled with each other, a mounting through hole is formed in the first shell, and a mounting through hole is formed in the second shell.

3. The metal-shell sound unit of claim 1, wherein the PCB board is a grid-like PCB board.

4. A metal-shell sound unit according to claim 3, wherein the grid-like PCB is provided with slots, and one end of the protective sleeve is located in a slot of the grid-like PCB.

5. The metal-shell sound unit of claim 1, wherein the fixed end of the positioning strip is a chuck portion.

6. The metal shell type sound generating unit according to claim 1, wherein the protective sleeve is fixed in a guide groove in the plastic shell, a yielding through hole is formed in the plastic shell and used for allowing the positioning strip to pass through, one part of the plastic shell is located inside the metal shell, the other part of the plastic shell is located outside the metal shell, and the tail end of the plastic shell is used for being connected with an external transmission line.

7. The metal-shell sound-producing unit of claim 1, wherein the positioning strip has a first section and a second section, the first section and the second section have a certain included angle, one end of the first section is the fixed end, and one end of the second section is the free end.

8. The metal shell sound unit of claim 7, wherein a portion of the first section of the locating bar is located inside the metal shell and the second section of the locating bar is located outside the metal shell.