CN212486745U

CN212486745U - Low-frequency telephone receiver

Info

Publication number: CN212486745U
Application number: CN202021099654.1U
Authority: CN
Inventors: 蒋春华
Original assignee: Jiaxing Jiebang Electronic Co ltd
Current assignee: Jiaxing Jiebang Electronic Co ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-02-05
Anticipated expiration: 2030-06-15

Abstract

The utility model discloses a low frequency receiver belongs to electro-acoustic conversion technology field, which comprises an outer shell, the inside movable iron unit of having seted up of shell, the inside fixed mounting of movable iron unit has two U armatures, the inside below fixed mounting of two U armatures has magnet A, magnet A's left side fixedly connected with coil A, the inside top fixed mounting of two U armatures has magnet B, magnet B's left side fixedly connected with coil B, the bottom right side fixed mounting who moves the iron unit has the switch. The utility model discloses an install tuning cavity, tuning pipe, two U armatures, switch, sealing washer A, sealing washer B and spout, two U armatures pass through the timely magnet A, magnet B, coil A and coil B increase power of on-off control, improve the power sensitivity of receiver, let the frequency response of receiver press close to really, adopt the emergence of cavity tuning to let the receiver sound change, realize the tuning, let receiver convenient to detach and installation, improved the practicality.

Description

Low-frequency telephone receiver

Technical Field

The utility model relates to an electroacoustic conversion technology field especially relates to a low frequency receiver.

Background

With the wide application of portable electronic products such as high-quality smart phones and pads, people have higher and higher requirements on earphones which can be used with the portable electronic products, and not only the small and exquisite earphone body is required, but also the high-fidelity sound quality performance capable of realistically reproducing various sound effects is required, so that the high-fidelity earphones become a market trend, receivers applied to the earphones are subject to requirements such as size, impedance, sensitivity and the like, the equivalent sound quality of a vibration system of the receivers is usually small under normal conditions, and the lower resonance frequency f0 of the receivers is generally ensured by increasing the compliance of a vibrating diaphragm, for example, a typical receiver with a diameter of 14.6mm is provided, the equivalent sound quality of the vibration system of the receiver is 20mg, the compliance is 2.46mm/N, and the f0 is 227 Hz. The f0 of a high-fidelity earphone is required to be near 100Hz or even lower, the existing low-frequency receiver has a problem that the single-unit frequency response range is small, namely, a unit cannot be manufactured to give consideration to low frequency, medium frequency and high frequency, and an early moving iron unit cannot be used for making a moving coil in the low frequency aspect and has insufficient sensitivity response.

The patent number CN201410453418.8 discloses a telephone receiver, which comprises a telephone receiver monomer body and an acoustic duct, wherein a vibrating diaphragm, a frame and a bracket of the telephone receiver monomer body form an internal cavity of the telephone receiver; the sound guide pipe is arranged on the back of the telephone receiver single body and comprises a sealing end and an opening end, the sealing end is communicated with the inner cavity of the telephone receiver through the inner side opening of the basin frame, and the opening end is provided with a through hole communicated with the outside. According to the technical scheme, the space on the back of the main body of the telephone receiver monomer can be fully utilized, the increase of the volume of the telephone receiver is reduced, the structural size of the whole telephone receiver meets the use requirement, the resonant frequency of the telephone receiver is effectively reduced, the low-frequency performance of the telephone receiver is improved, the low-frequency performance of the earphone is further improved, and the limitation of the acoustic design of the earphone on the appearance design is reduced.

The device has the following disadvantages when in use: 1. when the existing product is used, the moving iron unit cannot be tuned, so that the low-frequency response range is not ideal, the sensitivity is low, the use effect is poor, and therefore improvement is needed; 2. the device can not be assembled and disassembled quickly when in use, and is inconvenient to use, so the device also needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model provides a low-frequency receiver, aim at through installing the tuning cavity, the tuning pipe, two U armatures, the switch, sealing washer A, sealing washer B and spout, current low-frequency receiver, there is the lower problem of sensitivity, lead to the low frequency response untimely, give people subjective feeling is that the sound is unreal, there is not the sense of presence, the result of use is poor, through installing two U armatures, install magnet A, magnet B, coil A and coil B respectively in the inside of two U armatures, press close to magnet A, magnet B, coil A and coil B during operation and drive the drive rod to the vibrating diaphragm sound production, two U armatures through the timely magnet A of on-off control, magnet B, coil A and coil B increase power of tuning, improve the power sensitivity of receiver, let the frequency response of receiver real, but this can lead to the dynamic iron unit frequency response distortion, through the mode that adopts the cavity at this moment, the audio frequency with the vibrating diaphragm sound production changes through the tuning cavity, and when the audio frequency was managed through the inside tuning pipe of tuning cavity, the sound changed, realizes the tuning to it is comparatively complicated when current low frequency receiver installation, carry out timely change when not convenient for take place to damage, through installing the spout, install the spout in the shell left and right sides during the installation, fix the spout both sides through the baffle afterwards, prevent that the low frequency receiver is whole not hard up, improved the practicality.

The utility model provides a specific technical scheme as follows:

the utility model provides a pair of low frequency receiver, which comprises an outer shell, the inside movable iron unit of having seted up of shell, the inside fixed mounting of movable iron unit has two U armatures, the inside below fixed mounting of two U armatures has magnet A, magnet A's left side fixedly connected with coil A, the inside top fixed mounting of two U armatures has magnet B, magnet B's left side fixedly connected with coil B, the mid portion fixedly connected with drive rod of two U armatures, the top fixed mounting who moves the iron unit has the tuning cavity, the inside below fixed mounting of tuning cavity has the vibrating diaphragm, the top fixed mounting of vibrating diaphragm has the one end of tuning pipe, the sound hole has been seted up to the other end of tuning pipe, the bottom right side fixed mounting who moves the iron unit has the switch.

Optionally, the switch includes touch piece, sealing washer A, support pole, reset spring and feeler lever, reset spring has been cup jointed in the outside of feeler lever, reset spring's left side fixed mounting has the support pole, support pole's left side fixed mounting has sealing washer A, the left side top fixed mounting of feeler lever has the touch piece.

Optionally, the outside left and right sides fixed mounting of shell has the spout, the top fixed mounting of spout has the baffle.

Optionally, a sealing ring B is fixedly mounted at the joint of the tuning cavity and the shell.

Optionally, the number of the coils a and the number of the coils B are several.

Optionally, the power input ends of the switch, the magnet a, the magnet B, the coil a and the coil B are electrically connected with the power output end of the external power supply.

The utility model has the advantages as follows:

1. the utility model discloses aim at through installing two U armatures, the switch, magnet A, magnet B, coil A and coil B, current low frequency receiver, there is the lower problem of sensitivity, it is untimely to lead to the low frequency response, the subjective impression of giving people is just sound unreal, there is not the telepresence, the result of use is poor, through installing two U armatures, install magnet A respectively in the inside of two U armatures, magnet B, coil A and coil B, at magnet A, magnet B, coil A and coil B during operation drive the driving rod to the vibrating diaphragm sound production, two U armatures pass through the timely magnet A of on-off control, magnet B, coil A and coil B increase power, the power sensitivity of improvement receiver, let the frequency response of receiver be true, the result of use has been improved.

2. The utility model discloses aim at through the installation tuning cavity, the tuning pipe, the spout, the baffle, sealing washer A and sealing washer B, when increasing power to two U armatures, can lead to moving iron unit frequency response distortion, at this moment through the mode that adopts the cavity tuning, the audio frequency with the vibrating diaphragm sound production changes through the tuning cavity, when the inside tuning pipe of audio frequency process tuning cavity, the sound changes, realize the tuning, and it is comparatively complicated when current low frequency receiver installation, carry out timely change when not convenient for take place to damage, through installing the spout, install the spout in the shell left and right sides during the installation, fix the spout both sides through the baffle afterwards, prevent that the low frequency receiver is whole not hard up, the practicality is improved.

Drawings

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

Fig. 1 is a schematic view of an overall structure of a low-frequency receiver according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a switch of a low frequency receiver according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a sliding slot of a low frequency receiver according to an embodiment of the present invention.

In the figure: 1. a housing; 2. a coil A; 3. a magnet A; 4. a feeler lever; 5. a sealing ring A; 6. a return spring; 7. a touch sheet; 8. a support rod; 9. a magnet B; 10. a coil B; 11. a tuning cavity; 12. a sound hole; 13. a tuning pipe; 14. a seal ring B; 15. a baffle plate; 16. a drive rod; 17. a chute; 18. a moving iron unit; 19. a double U armature; 21. vibrating diaphragm; 22. and (4) switching.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, 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.

A low frequency receiver according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 3.

Referring to fig. 1, 2 and 3, a low frequency receiver provided in an embodiment of the present invention includes a housing 1, a moving iron unit 18 is disposed inside the housing 1, a double U armature 19 is fixedly mounted inside the moving iron unit 18, a magnet A3 is fixedly mounted inside the double U armature 19 below the double U armature 19, a left side fixedly connected with coil a2 of the magnet A3, a magnet B9 is fixedly mounted inside the double U armature 19 above the double U armature 19, a left side fixedly connected with coil B10 of the magnet B9, a driving rod 16 is fixedly connected to a middle portion of the double U armature 19, a tuning cavity 11 is fixedly mounted above the moving iron unit 19, a vibrating diaphragm 21 is fixedly mounted inside below the tuning cavity 11, one end of a tuning tube 13 is fixedly mounted above the vibrating diaphragm 21, an acoustic hole 12 is disposed at the other end of the tuning tube 13, a switch 22 is fixedly mounted at the right side of the bottom of the moving iron unit 18, the existing low-frequency telephone receiver has the problem of low sensitivity, so that low-frequency response is not timely, subjective feeling of people is that sound is not real, no presence is sensed, the using effect is poor, the double-U armature 19 is installed, the magnet A3, the magnet B9, the coil A2 and the coil B10 are respectively installed in the double-U armature 19, when the magnet A3, the magnet B9, the coil A2 and the coil B10 work, the driving rod 16 is driven to sound the vibrating diaphragm 21, the double-U armature 19 controls power of the magnet A3, the magnet B9, the coil A2 and the coil B10 to be increased timely through the switch 22, the power sensitivity of the telephone receiver is improved, the frequency response of the telephone receiver is close to the real, but the frequency response distortion of the moving iron unit 18 can be caused, at the moment, the audio frequency of the vibrating diaphragm 21 is changed through the tuning cavity 11 by adopting a cavity tuning mode, when the audio frequency passes through the tuning tube 13 in the tuning cavity 11, the sound changes, realizes the tuning to comparatively complicated when current low frequency receiver installation, carry out timely change when being not convenient for take place to damage, through installing spout 17, install spout 17 in the 1 left and right sides of shell during the installation, fix spout 17 both sides through baffle 15 afterwards, prevent that the low frequency receiver is whole not hard up, improved the practicality.

Referring to fig. 1 and 2, switch 22 includes touch piece 7, sealing washer a5, supports pole 8, reset spring 6 and feeler lever 4, reset spring 6 has been cup jointed in the outside of feeler lever 4, reset spring 6's left side fixed mounting has support pole 8, support pole 8's left side fixed mounting has sealing washer a5, the left side top fixed mounting of feeler lever 4 has touch piece 7.

Referring to fig. 1, sliding grooves 17 are fixedly installed on the left and right sides of the exterior of the housing 1, and a baffle 15 is fixedly installed on the top of the sliding grooves 17.

Referring to fig. 1 and 2, a sealing ring B14 is fixedly mounted at the joint of the tuning cavity 11 and the casing 1.

Referring to fig. 1, the number of the coils a2 and B10 is several.

Referring to fig. 1 and 2, the power input terminals of the switch 22, the magnet A3, the magnet B9, the coil a2 and the coil B10 are electrically connected to the power output terminal of the external power source.

The embodiment of the utility model provides a low frequency receiver, when using, at first, through external power supply for magnet A3, magnet B9, coil A2 and coil B10 circular telegram in the inside of two U armatures 19, drive actuating rod 16 and to the vibrating diaphragm 21 sound production when magnet A3, magnet B9, coil A2 and coil B10 work, sound is sounded through sound hole 12 above tuning cavity 11, later through pressing switch 22 to magnet A3, magnet B9, coil A2 and coil B10 increase power in the inside of two U armatures 19, at first pressing feeler lever 4 during pressing, feeler lever 4 drives touching piece 7 contact two U armatures 19 of bottom, when loosening the pressing, reset spring 6 outside feeler lever 4 supports against pole 8, reset spring 6 produces the effort, reset feeler lever 4, improve the holistic sensitivity of receiver during pressurization, but this can lead to moving iron unit 18 frequency response distortion, at this moment through adopting the mode of tuning cavity, the audio frequency of sounding at vibrating diaphragm 21 changes through tuning cavity 11, when the audio frequency passes through tuning pipe 13 inside tuning cavity 11, the sound changes, realize the tuning, with spout 17 afterwards, install in the 1 left and right sides of shell, fix spout 17 both sides through baffle 15 afterwards, prevent that the low frequency receiver is whole not hard up, the practicality has been improved, sealing washer B14 and the inside sealing washer 5 of supporting pole 8 and the shell 1 junction fixed mounting of junction at tuning cavity 11 and shell 1, movable iron unit 18 internal seal has been ensured, the holistic security of receiver has been improved.

It should be noted that the utility model relates to a low frequency receiver, including shell 1, coil A2, magnet A3, feeler lever 4, sealing washer A5, reset spring 6, touch piece 7, prop up pole 8, magnet B9, coil B10, tuning cavity 11, sound hole 12, tuning pipe 13, sealing washer B14, baffle 15, driving rod 16, spout 17, move indisputable unit 18, two U armatures 19, vibrating diaphragm 21, switch 22, above-mentioned electrical components are the prior art product, by the needs of using of technical staff in the field, select, install and accomplish the debugging operation of circuit, ensure that each electrical equipment can all normally work, the part is general standard component or the part that technical staff in the field knows, its structure and principle all can learn through the technical manual or learn through conventional experimental method for this technical staff, the applicant does not do specific restriction here.

It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A low-frequency telephone receiver comprises a shell (1) and is characterized in that a moving iron unit (18) is arranged in the shell (1), a double-U armature (19) is fixedly arranged in the moving iron unit (18), a magnet A (3) is fixedly arranged below the inner part of the double-U armature (19), a coil A (2) is fixedly connected to the left side of the magnet A (3), a magnet B (9) is fixedly arranged above the inner part of the double-U armature (19), a coil B (10) is fixedly connected to the left side of the magnet B (9), a driving rod (16) is fixedly connected to the middle part of the double-U armature (19), a tuning cavity (11) is fixedly arranged above the moving iron unit (18), a vibrating diaphragm (21) is fixedly arranged below the inner part of the tuning cavity (11), and one end of a tuning tube (13) is fixedly arranged above the vibrating diaphragm (21), the other end of the tuning pipe (13) is provided with a sound hole (12), and the right side of the bottom of the moving iron unit (18) is fixedly provided with a switch (22).

2. The low-frequency receiver according to claim 1, wherein the switch (22) comprises a touch sheet (7), a seal ring A (5), a support rod (8), a return spring (6) and a touch rod (4), the return spring (6) is sleeved on the outer side of the touch rod (4), the support rod (8) is fixedly installed on the left side of the return spring (6), the seal ring A (5) is fixedly installed on the left side of the support rod (8), and the touch sheet (7) is fixedly installed on the top end of the left side of the touch rod (4).

3. A low frequency receiver according to claim 1, characterized in that sliding grooves (17) are fixedly installed on the left and right sides of the exterior of the housing (1), and a baffle (15) is fixedly installed on the top of the sliding grooves (17).

4. A low frequency receiver according to claim 1, characterized in that a sealing ring B (14) is fixedly installed at the joint of the tuning cavity (11) and the housing (1).

5. A low frequency receiver according to claim 1, characterized in that the number of coils a (2) and B (10) is several.

6. A low frequency receiver according to claim 1, wherein the power input terminals of said switch (22), magnet a (3), magnet B (9), coil a (2) and coil B (10) are all electrically connected to the power output terminal of the external power source.