CN209897270U

CN209897270U - Mobile terminal structure

Info

Publication number: CN209897270U
Application number: CN201921257129.5U
Authority: CN
Inventors: 杨小飞
Original assignee: Shenzhen Tengzhi Communication Technology Co Ltd
Current assignee: Shenzhen Tengzhi Communication Technology Co Ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-01-03
Anticipated expiration: 2029-07-31

Abstract

The utility model discloses a mobile terminal structure, mobile terminal structure includes the casing, accept circuit board and sound production device in the casing, sound production device includes the basin frame, locate magnetic circuit and vibration system in the basin frame, and block binding post on the basin frame, magnetic circuit and vibration system cooperate, binding post electricity is connected circuit board and vibration system, magnetic circuit includes the yoke and locates on the yoke and form the main magnet steel in magnetic gap, the yoke includes the bottom plate, buckle two long axis walls and two minor axis walls that extend from the bottom plate, two long axis walls and two minor axis wall head and the tail interval set up, be equipped with the breach on the bottom plate, the long axis wall, form the hole of leaking that communicates magnetic gap between the border of breach and the minor axis wall, binding post connects the electric arm with the first of circuit board and just to leaking the hole setting. The utility model discloses a mobile terminal stable in structure, audio are good.

Description

Mobile terminal structure

Technical Field

The utility model relates to an electronic equipment technical field especially relates to a mobile terminal structure.

Background

With the advent of the mobile internet age, the number of smart mobile devices is increasing. Among the mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal device. At present, the functions of a mobile phone are very diverse, one of them is a high-quality music function, and a sound generating unit in the mobile phone is one of the necessary conditions for realizing the high-quality music function.

The existing miniature sounding monomer generally comprises a basin frame used for accommodating a magnetic circuit system and a vibration system, wherein the magnetic circuit system comprises a magnetic bowl and magnetic steel matched with the magnetic bowl, the magnetic steel forms a magnetic gap with the magnetic bowl, and the vibration system comprises a vibrating diaphragm fixedly arranged on the periphery of the basin frame and a voice coil inserted into the magnetic gap and driving the vibrating diaphragm to vibrate. When the voice coil is electrified, the voice coil in the magnetic gap can move under the action of a magnetic field, and along with the change of the current, the movement can also change along with the sounding, so that the vibrating diaphragm is driven to vibrate up and down, and the sound is generated. The magnetism bowl includes the diapire, buckles the magnetism bowl lateral wall that extends from the diapire and runs through the hole that leaks that sets up and outside air intercommunication, in order to be connected with other parts electricity of cell-phone, results in leaking hole the place ahead position and has other parts, shields the hole that leaks, influences the sound production.

Therefore, it is necessary to provide a mobile terminal structure to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a mobile terminal structure aims at solving and reveals the hole and shields the technical problem who influences the sound production among the prior art.

In order to achieve the above object, the utility model provides a mobile terminal structure comprises a housing, a circuit board and a sound generating device accommodated in the housing, the sound generating device comprises a basin frame, a magnetic circuit system and a vibration system arranged in the basin frame, and a connecting terminal clamped on the basin frame, the magnetic circuit system is matched with the vibration system, the connecting terminal is electrically connected with the circuit board and the vibration system, the magnetic circuit system comprises a magnetic yoke and a main magnetic steel arranged on the magnetic yoke and forming a magnetic gap, the magnetic yoke comprises a bottom plate, two long shaft walls and two short shaft walls bent and extended from the bottom plate, the two long shaft walls and the two short shaft walls are arranged at intervals end to end, a gap is arranged on the bottom plate, the edge of the gap and a leakage hole communicated with the magnetic gap is formed between the long shaft walls, the first electric connecting arm connected with the circuit board and the wiring terminal is arranged right opposite to the leakage hole.

Preferably, the vibration system comprises a vibrating diaphragm fixedly arranged on the periphery of the basin frame, a voice coil inserted into the magnetic gap and driving the vibrating diaphragm to vibrate, and a voice coil lead wire connected with the voice coil and the wiring terminal, wherein the voice coil is inserted into the magnetic gap.

Preferably, the number of the connecting terminals is two, and the two connecting terminals are respectively arranged on one side of the two long-axis walls, which is far away from the main magnetic steel.

Preferably, the basin frame includes the mounting panel, certainly the mounting panel is buckled the lateral wall that extends and two butt walls of relative setting, the vibrating diaphragm pastes and is located on the lateral wall, two the butt wall certainly the mounting panel is to keeping away from the vibrating diaphragm direction extends, the yoke block in two between the butt wall.

Preferably, the wiring terminal comprises a second electric connection arm connected with the voice coil lead, a first electric connection arm connected with the circuit board, and a connection arm connected with the first electric connection arm and the second electric connection arm, the first electric connection arm comprises a first elastic arm extending from the connection arm, a second elastic arm extending from the first elastic arm in a bending manner, and a clamping plate connected with the second elastic arm, a first clamping hole and a second clamping hole communicated with each other are formed in one side, away from the vibrating diaphragm, of the side wall, the clamping plate is abutted to the inner wall of the first clamping hole, and the second elastic arm penetrates through the first clamping hole and the second clamping hole.

Preferably, the first engaging hole has a larger diameter than the second engaging hole.

Preferably, the lateral wall is kept away from the bottom surface of vibrating diaphragm is formed with dodges the step, the linking arm is including the laminating first linking arm that the bottom surface set up, certainly the second linking arm that first linking arm buckled to extend, certainly the third linking arm that the second linking arm buckled to extend, the second linking arm with dodge the relative setting in surface of step.

Preferably, the bottom surface that the vibrating diaphragm was kept away from to the lateral wall is formed with the installation step, the installation step include certainly the bottom surface is to being close to the installation wall that the vibrating diaphragm direction extends and certainly the installation wall is to keeping away from the fender wall that the main magnet steel direction extends, keep off the wall connection the side of basin frame with the installation wall, the second connects the electric arm including the laminating first installation arm that the installation wall set up and certainly first installation arm buckles the second installation arm that extends, the through-hole has been seted up on the installation wall, the second installation arm pass the through-hole with voice coil loudspeaker voice coil pin connection.

Preferably, the notch is an arc-shaped notch.

The technical scheme of the utility model among, through set up the breach on the bottom plate, make by the major axis wall the border of breach with the bore increase in the hole that leaks that forms between the minor axis wall to reduce the hole that leaks because other spare parts block, lead to the air current circulation to influence, improve tone quality.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic perspective view of a mobile terminal according to an embodiment of the present invention;

fig. 2 is a schematic view of another perspective three-dimensional structure of the mobile terminal structure according to the embodiment of the present invention;

FIG. 3 is an enlarged schematic view of a portion B shown in FIG. 2;

FIG. 4 is a schematic cross-sectional view taken along line A-A of FIG. 2;

fig. 5 is an enlarged schematic view of a portion C shown in fig. 2.

The reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Moreover, the technical solutions in the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or can not be realized, the combination of the technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

As shown in fig. 1 to 4, a mobile terminal structure includes a housing (not shown), a circuit board (not shown) and a sound-generating device 100 accommodated in the housing, where the sound-generating device 100 includes a frame 1, a magnetic circuit system 3 and a vibration system 5 arranged in the frame 1, and a connection terminal 7 clamped on the frame 1, the magnetic circuit system 3 is matched with the vibration system 5, the connection terminal 7 is electrically connected to the circuit board and the vibration system 5, the magnetic circuit system 3 includes a magnetic yoke 31 and a main magnetic steel 33 arranged on the magnetic yoke 31 and forming a magnetic gap 32, the magnetic yoke 31 includes a bottom plate 311, two long axial walls 313 and two short axial walls 315 bent and extending from the bottom plate 311, the two long axial walls 313 and the two short axial walls 315 are arranged at intervals end to end, a notch 312 is arranged on the bottom plate 311, and the long axial walls 313, two short axial walls 315 are arranged at end to end, and the bottom plate, A leakage hole 314 communicated with the magnetic gap 32 is formed between the edge of the notch 312 and the short shaft wall 315, and the first electric connecting arm 71 connected with the wiring terminal 7 and the circuit board is arranged right opposite to the leakage hole 314. Preferably, the notch 312 is an arc-shaped notch 312 to further stabilize the airflow through the leakage opening 314.

The gap 312 is arranged on the bottom plate 311, so that the caliber of the leakage hole 314 formed among the long shaft wall 313, the edge of the gap 312 and the short shaft wall 315 is increased, the influence of airflow circulation caused by the blockage of other parts of the leakage hole 314 is reduced, and the sound quality is improved.

The vibration system 5 comprises a vibrating diaphragm 51 fixedly arranged on the periphery of the basin frame 1, a voice coil 53 inserted into the magnetic gap 32 and driving the vibrating diaphragm 51 to vibrate, and a voice coil lead wire connected with the voice coil 53 and the wiring terminal 7, wherein the voice coil 53 is inserted into the magnetic gap 32. In this embodiment, the edge of the diaphragm 51 is connected to the sidewall 13 of the frame 1, and the free end of the sidewall 13 forms an oscillation portion for shielding the edge of the diaphragm 51, so that unnecessary touch on the diaphragm 51 during installation can be reduced, and the product quality can be improved.

The number of the connecting terminals 7 is two, and the two connecting terminals 7 are respectively arranged on one side of the two long-axis walls 313 departing from the main magnetic steel 33.

Referring to fig. 5, the frame 1 includes a mounting plate 11, a side wall 13 bent and extended from the mounting plate 11, and two abutting walls 15 disposed oppositely, the diaphragm 51 is attached to the side wall 13, the two abutting walls 15 extend from the mounting plate 11 to a direction away from the diaphragm 51, and the magnetic yoke 31 is clamped between the two abutting walls 15. Further, the abutting wall 15 may be made of a magnetic material, and constitutes a secondary magnetic steel together with the side wall 13 of the yoke 31 to increase the magnetic flux of the magnetic gap 32.

The connection terminal 7 includes a second power connection arm 73 connected to the voice coil lead, a first power connection arm 71 connected to the circuit board, and a connection arm 75 connecting the first power connection arm 71 and the second power connection arm 73, the first power connection arm 71 includes a first elastic arm 711 extending from the connection arm 75, a second elastic arm 713 extending from the first elastic arm 711 in a bent manner, and a clamping plate 715 connected to the second elastic arm 713, a first clamping hole 12 and a second clamping hole 14 communicated with each other are formed in one side of the side wall 13 away from the diaphragm 51, the clamping plate 715 abuts against an inner wall of the first clamping hole 12, and the second elastic arm 713 penetrates through the first clamping hole 12 and the second clamping hole 14. When the terminal is installed, the engaging plate 715 is inserted into the first engaging hole 12, and the first power receiving arm 71 is driven to be inserted into the second engaging hole 14, so that the position of the terminal 7 is limited by the engaging plate 715 abutting against the inner wall of the first engaging hole 12 close to the second engaging hole 14. When the first elastic arm 711 and the second elastic arm 713 are installed, the elastic deformation can be generated according to the actual installation position to adapt to the actual installation position, so that the contact is stable.

Further, the diameter of the first engaging hole 12 is larger than the diameter of the second engaging hole 14.

The bottom surface 132 of the side wall 13 far away from the diaphragm 51 is formed with an avoiding step 131, the connecting arm 75 comprises a first connecting arm 751 attached to the bottom surface 132, a second connecting arm 753 bent and extended from the first connecting arm 751, a third connecting arm 755 bent and extended from the second connecting arm 753, and the second connecting arm 753 and the surface of the avoiding step 131 are arranged oppositely. Due to the arrangement of the avoiding step 131, the first connecting arm 71 has a suitable space for the terminal 7 to move when being connected with a circuit board.

The lateral wall 13 is kept away from the bottom surface 132 of vibrating diaphragm 51 is formed with installation step 133, installation step 133 includes certainly bottom surface 132 is to being close to the installation wall that the vibrating diaphragm 51 direction extends and certainly the installation wall is to keeping away from the fender wall (not shown) that main magnet steel 33 direction extends, keep off the wall connection the side of basin frame 1 with the installation wall, the second connects electric arm 73 including the laminating first installation arm 731 that the installation wall set up and certainly first installation arm 731 buckles the second installation arm that extends, the through-hole has been seted up on the installation wall, the second installation arm passes the through-hole with voice coil lead connection. The mounting steps 133 are provided to restrict the position of the terminal 7 at both ends of the terminal 7.

The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.

Claims

1. A mobile terminal structure is characterized in that the mobile terminal structure comprises a shell, a circuit board and a sound production device, wherein the circuit board and the sound production device are contained in the shell, the sound production device comprises a basin frame, a magnetic circuit system and a vibration system which are arranged in the basin frame, and a wiring terminal clamped on the basin frame, the magnetic circuit system is matched with the vibration system, the wiring terminal is electrically connected with the circuit board and the vibration system, the magnetic circuit system comprises a magnetic yoke and main magnetic steel which is arranged on the magnetic yoke and forms a magnetic gap, the magnetic yoke comprises a bottom plate, two long shaft walls and two short shaft walls, the two long shaft walls and the two short shaft walls are bent and extended from the bottom plate, the two long shaft walls and the two short shaft walls are arranged at intervals end to end, notches are arranged on the bottom plate, leakage holes communicated with the magnetic gap are formed among the edges of the long shaft, the first electric connecting arm connected with the circuit board and the wiring terminal is arranged right opposite to the leakage hole.

2. The mobile terminal structure of claim 1, wherein the vibration system comprises a diaphragm fixedly disposed around the frame, a voice coil inserted into the magnetic gap and driving the diaphragm to vibrate, and a voice coil lead connecting the voice coil and the connection terminal, the voice coil being inserted into the magnetic gap.

3. The mobile terminal structure of claim 2, wherein the number of the connecting terminals is two, and two connecting terminals are respectively disposed on a side of the two long axis walls facing away from the main magnetic steel.

4. The mobile terminal structure of claim 3, wherein the frame comprises a mounting plate, a side wall extending from the mounting plate in a bending manner, and two abutting walls arranged oppositely, the diaphragm is attached to the side wall, the two abutting walls extend from the mounting plate in a direction away from the diaphragm, and the magnetic yoke is clamped between the two abutting walls.

5. The mobile terminal structure of claim 4, wherein the connection terminal comprises a second power connection arm connected to the voice coil lead, a first power connection arm connected to the circuit board, and a connection arm connecting the first power connection arm and the second power connection arm, the first power connection arm comprises a first elastic arm extending from the connection arm, a second elastic arm extending from the first elastic arm in a bent manner, and a clamping plate connected to the second elastic arm, one side of the side wall away from the diaphragm is provided with a first clamping hole and a second clamping hole which are communicated with each other, the clamping plate abuts against an inner wall of the first clamping hole, and the second elastic arm penetrates through the first clamping hole and the second clamping hole.

6. The mobile terminal structure of claim 5, wherein an aperture of the first engaging hole is larger than an aperture of the second engaging hole.

7. The mobile terminal structure of claim 5, wherein an avoiding step is formed on a bottom surface of the side wall away from the diaphragm, and the connecting arms include a first connecting arm attached to the bottom surface, a second connecting arm bent and extended from the first connecting arm, and a third connecting arm bent and extended from the second connecting arm, and the second connecting arm is disposed opposite to a surface of the avoiding step.

8. The mobile terminal structure of claim 5, wherein the bottom surface of the sidewall away from the diaphragm is formed with a mounting step, the mounting step includes a mounting wall extending from the bottom surface toward a direction close to the diaphragm and a blocking wall extending from the mounting wall toward a direction away from the main magnet, the blocking wall connects the side surface of the frame and the mounting wall, the second power connection arm includes a first mounting arm attached to the mounting wall and a second mounting arm bent and extending from the first mounting arm, the mounting wall is formed with a through hole, and the second mounting arm passes through the through hole and is connected to the voice coil lead.

9. The mobile terminal structure according to any of claims 1 to 8, wherein the notch is an arc-shaped notch.