CN205544864U - Vibration motor - Google Patents

Abstract

The utility model provides a vibration motor. Vibration motor including the utensil accommodating space the shell, set up in in the accommodating space and with flexible connectors that the shell links to each other, pass through flexible connectors hangs and locates accommodating space's vibration system, and drive the coil assembly of vibration system motion, vibration system includes the balancing weight and is used for adjusting vibration motor resonant frequency's quality piece, the balancing weight both ends include the accepting groove, the quality piece accept in the accepting groove. The utility model discloses a set up the accepting groove at balancing weight both ends set up in the accepting groove and be used for adjusting vibration motor's resonant frequency's quality piece to reduce spring constant to resonant frequency's influence, guarantee the final finished product vibration motor resonant frequency's of actual production in -process uniformity.

Description

Vibrating motor

[technical field]

This utility model relates to vibrating motor technical field, is specifically related to a kind of for portable consumer The vibrating motor of electronic product.

[background technology]

Along with the development of electronic technology, portable consumer electronic product is increasingly pursued by people, Such as mobile phone, handheld device, guider or palm multimedia entertainment equipment etc., these electronic products General vibrating motor of all using to do system feedback, the incoming call prompting of such as mobile phone, information alert, Navigation hint, the vibrational feedback of game machine.

Existing vibrating motor includes having the shell of receiving space, be contained in the elasticity of described receiving space even Fitting and be suspended in the vibrational system of described receiving space by Flexible Connector, described vibrating motor Resonant frequency is relevant with the gross mass of the spring constant of described Flexible Connector and described vibrational system (f0=1/2pi*sqrt (k/m), wherein f0 is resonant frequency, and k is spring constant, and m is vibrational system Gross mass).In actual production process, owing to spring constant k has certain dispersion, thus lead The resonant frequency of the vibrating motor finished product causing production is inconsistent, affects product quality.

Thus, it is necessary to provide the vibrating motor of a kind of improvement, to overcome drawbacks described above.

[utility model content]

For solving the technical problem that in actual production process, vibrating motor finished product resonant frequency is inconsistent, this Utility model provides the vibrating motor of a kind of improvement, by offering accepting groove at balancing weight two ends, in institute It is provided for regulating the mass of the resonant frequency of described vibrating motor in stating accepting groove, to reduce spring The dispersion of the constant impact on resonant frequency, it is ensured that the final finished vibration electricity in actual production process The concordance of machine resonant frequency.

This utility model provides a kind of vibrating motor, including tool receiving space shell, be arranged at described The Flexible Connector that in receiving space and is connected with described shell, it is suspended at by described Flexible Connector The vibrational system of described receiving space and drive the coil groups that described vibrational system moves, described vibration System includes balancing weight and for regulating the mass of described vibrating motor resonant frequency, described mass It is located at described balancing weight.

In a preferred embodiment of the vibrating motor of this utility model offer, described balancing weight two ends set Having accepting groove, described mass quantity is two pieces, is contained in described accepting groove respectively.

In a preferred embodiment of the vibrating motor of this utility model offer, described balancing weight includes leaning on The first surface of nearly described coil and the second surface relative with described first surface, described accepting groove by Described first surface is formed to described second surface depression.

In a preferred embodiment of the vibrating motor of this utility model offer, described vibrational system is also wrapped Including the first pole piece, described first pole piece is located at the first surface of described balancing weight and encloses with described accepting groove Becoming to house the space of described mass, described mass is attached on described first pole piece.

In a preferred embodiment of the vibrating motor of this utility model offer, described vibrational system is also wrapped Including the second pole piece, described second pole piece is located at the second surface of described balancing weight.

In a preferred embodiment of the vibrating motor of this utility model offer, described balancing weight includes also First balancing weight of row setting and the second balancing weight, described second balancing weight is divided into described first counterweight The two ends of block, the position, surface of the close described coil groups of described first balancing weight and described second balancing weight In Different Plane, and between described first pole piece and described second balancing weight, there is gap, described coil Group is contained in described gap.

In a preferred embodiment of the vibrating motor of this utility model offer, described accepting groove is located at institute Stating the second balancing weight, described accepting groove runs through described second counterweight along the direction of vibration of described vibrational system Block.

In a preferred embodiment of the vibrating motor of this utility model offer, described vibrational system is also wrapped Including bracer, described bracer is located at the middle part of described first balancing weight and described bracer and described the One pole piece abuts and arranges.

In a preferred embodiment of the vibrating motor of this utility model offer, described vibrating motor also wraps Including two circuit boards, described circuit board is divided into described first pole piece both sides and is fixed on described shell, institute State coil be fixed on described circuit board and electrically connect with described circuit board.

In a preferred embodiment of the vibrating motor of this utility model offer, described shell includes symmetry Arrange and two frames that are connected, described frame include the sidewall that arranges along described vibrational system direction and The fixed part of fixing described circuit board, described fixed part includes by described sidewall in described receiving space The extension extended and the bending extended to close described vibrational system direction by described extension two ends Portion, in the groove that described circuit board is located in described extension and described kink surrounds.

Compared to prior art, the vibrating motor that this utility model provides, have the advantages that

One, this utility model by being provided for regulating the resonance of described vibrating motor at described balancing weight The mass of frequency, the quality of described mass can be entered according to the resonant frequency parameter that a upper operation records Row sum-equal matrix, changes the gross mass of described vibrational system by the quality changing mass normal to reduce spring The dispersion of the number impact on resonant frequency, it is ensured that the final products vibrating motor resonant frequency of production Concordance.

Two, offer accepting groove at described balancing weight two ends, described mass be contained in described accepting groove and Being attached at described first pole piece, described first pole piece, on the one hand for armoured magnetic field, reduces described vibration The leakage field of motor, on the other hand can be used to arrange mass, plays the positioning action of mass.

Three, the middle part at described first balancing weight arranges described bracer, described bracer partial receipt Abutting in described first balancing weight and with described first pole piece, described bracer abuts described first pole Core can support described first pole piece, prevents described first pole piece from sending out because of the attraction by described magnet steel group Change shape.

Four, described shell is surrounded by frame and the upper cover plate and the lower cover that are covered on described frame both sides, Described frame quantity is two, identical and be symmetrical arranged and can be combined as having the complete of four sidewalls Whole frame structure, described frame is provided with the fixed part of fixing circuit board, and ease of assembly is dismantled.

[accompanying drawing explanation]

Fig. 1 is a preferred embodiment stereochemical structure exploded view of the vibrating motor that this utility model provides；

Fig. 2 is the three-dimensional structure diagram of vibrating motor shown in Fig. 1；

Fig. 3 is that vibrating motor shown in Fig. 2 is along the sectional view in A-A direction；

Fig. 4 is the first pole piece and the assembling schematic diagram of mass of vibrating motor shown in Fig. 1.

[detailed description of the invention]

Below in conjunction with the accompanying drawing in this utility model embodiment, to the skill in this utility model embodiment Art scheme is clearly and completely described, it is clear that described embodiment is only of the present utility model A part of embodiment rather than whole embodiments.Based on the embodiment in this utility model, ability All other embodiments that territory those of ordinary skill is obtained under not making creative work premise, Broadly fall into the scope of this utility model protection.

See also Fig. 1, Fig. 2 and Fig. 3, Fig. 1 be this utility model provide vibrating motor one relatively The stereochemical structure exploded view of good embodiment, Fig. 2 is the three-dimensional structure diagram of vibrating motor shown in Fig. 1, figure 3 for vibrating motor shown in Fig. 2 along A-A direction sectional view.

The vibrating motor 100 that this utility model provides includes the shell 110 having receiving space 110A, receives It is dissolved in the vibrational system 130 of described receiving space 110A, coil groups 150, circuit board 170, elasticity Connector 180 and buffer substrate tablet 190.Described vibrational system 130 and described coil groups 150 are by described Flexible Connector 180 is suspended in described receiving space 110A, and described coil groups 150 is fixed on described electricity Road plate 170 and electrically connecting with described circuit board 170, described circuit board 170 is fixed on described shell 110, Described buffer substrate tablet 190 is fixed on described Flexible Connector 180.

Described shell 110 includes upper cover plate 111, lower cover 113 and two frames 115, described frame 115 Being symmetrical arranged and be connected, described upper cover plate 111 and described lower cover 113 are covered on described respectively Frame 115 both sides.Frame 115 described in described upper cover plate 111, described lower cover 113 and two surrounds institute State receiving space 110A.Described frame 115 includes sidewall 1151 and fixed part 1153, described fixing Portion 1153 is the extended structure of described sidewall 1151, and described fixed part 1153 includes by described sidewall 1151 in described receiving space 110A extend extensions 11531 and by described extension 11531 Two ends are to the kink 11533 extended near described vibrational system 130 direction, described circuit board 170 It is located in described extension 11531 and in groove that described kink 11533 surrounds.

Certainly, described in two in the present embodiment, frame 115 can also be structure as a whole, certainly, also Can be structure as a whole with upper cover plate 111 or lower cover 113, wherein not affect described during integrative-structure The function of vibrating motor 100.

Described vibrational system 130 includes balancing weight 131, magnet steel group 133, bracer 135, mass 137, the first pole piece 138 and the second pole piece 139.Described balancing weight 131 has first surface 1315 And the second surface 1317 being oppositely arranged with described first surface 1315.Described first surface 1315 leans on Nearly described coil groups 150.Described magnet steel group 133 and described bracer 135 are located at described balancing weight 131 Middle part, described mass 137 is located at the two ends of described balancing weight 131, described first pole piece 138 Being located at the first surface 1315 of described balancing weight 131, described second pole piece 139 is located at described balancing weight The second surface 1317 of 131.

Described balancing weight 131 includes the first balancing weight 1311 of being set up in parallel and two the second balancing weights 1313, two described second balancing weights 1313 are divided into described first balancing weight 1311 two ends.Described First balancing weight 1311 is near the surface (i.e. near the surface of described upper cover 111) of described coil groups 150 With the surface of the close described coil groups 150 groups of described second balancing weight 1313 (i.e. near described upper cover The surface of 111) it is positioned at Different Plane, along described upper cover plate 111 to the direction of described lower cover 113, The surface of the close described coil groups 150 of described second balancing weight 1313 is higher than described first balancing weight The surface of the close described coil groups 150 of 1311.Described magnet steel group 133 and described bracer 135 set In described first balancing weight 1311.Described mass 137 is located at described second balancing weight 1313.

Described first balancing weight 1311 includes the first collecting being located at described first balancing weight 1311 two ends Hole 13111 and be located at the second accepting hole 13113 in the middle part of described first balancing weight 1311.On described Cover plate 111 is to the direction of described lower cover 113, and described first accepting hole 13111 and described second is received Hold hole 13113 and all run through two relative surface configurations of described first balancing weight 1311.Described first houses The quantity in hole 13111 is two.In the present embodiment, described first accepting hole 13111 is symmetrically set in Described second accepting hole 13113.

Accepting groove 1313A, described accepting groove 1313A it is respectively equipped with on described second balancing weight 1313 By described second balancing weight 1313 near the surface of described upper cover 111 to the table near described lower cover 113 Face depression forms.In the present embodiment, the two ends of described balancing weight 131 are along described first surface 1315 The described receipts being described second balancing weight 1313 formed to described second surface 1317 direction depression Tank 1313A.Further, along the direction of vibration of described vibrational system 130, described accepting groove 1313A runs through two surface configurations of described second balancing weight 1313, the most described accepting groove 1313A tri- End opening.

Described first balancing weight 1311 and described second balancing weight 1313 can be formed in one structure.

The quantity of described magnet steel group 133 is two groups, is contained in respectively in described first accepting hole 13111, In the present embodiment, the magnet steel quantity of described magnet steel group 133 is five, is set up in parallel, i.e. each Five magnet steel are all housed in described first accepting hole 13111.

Described bracer 135 is partially housed in described second accepting hole 13113.Described bracer 135 One end abut described second pole piece 139, the other end extends to described upper cover plate 111 direction and abuts Described first pole piece 138.Described bracer 137 abuts described first pole piece 138 and can support described One pole piece 138, prevents described first pole piece 138 from occurring because of the attraction by described magnet steel group 133 Deformation.

Incorporated by reference to refering to Fig. 4, show for the first pole piece of vibrating motor shown in Fig. 1 and the assembling of mass It is intended to.Described mass 137 is for regulating the resonant frequency of described vibrating motor 100.Described quality The quantity of block 137 is two, is contained in described accepting groove 1313A respectively, and is attached at described first Pole piece 138.By adjusting the quality of described mass 137 and then regulating described vibrational system 130 Gross mass, it is achieved regulate the resonant frequency of described vibrating motor 100, to ensure final products resonance frequency The concordance of rate.Specifically, the resonant frequency of described vibrating motor 100 and described Flexible Connector 180 Spring constant and gross mass relevant (f0=1/2pi*sqrt (k/m), the wherein f0 of described vibrational system 130 For resonant frequency, k is spring constant, and m is the gross mass of vibrational system), due to institute in real process Stating spring constant and have certain dispersion, this utility model is by regulating the quality of described mass 137 Change the gross mass of described vibrational system 130 to reduce described spring constant dispersion to resonant frequency Impact, improves the concordance of the resonant frequency of described vibrating motor 100.Preferably, described first pole Core 138 uses with mass 137 and is adhesively fixed.During assembling, first mass 137 is bonded in first On movement 138, then the first pole piece 138 being assembled with mass 137 is buckled in the matter being provided with accepting groove On gauge block, as such, it is possible to simplify operation convenient installation, also allow for by regulation mass 137 Quality changes the resonant frequency of entirety.

Described first pole piece 138 and described second pole piece 139, for armoured magnetic field, reduce described vibration The leakage field of motor 100.Described first pole piece 138 is located at the first surface 1315 of described balancing weight 131. Specifically, between described first pole piece 138 and described first balancing weight 1311, there is gap, described line Circle group 150 and described circuit board 170 are all contained in this gap.Described first pole piece 138 is covered on The accepting groove 1313A of described second balancing weight 1313, and surround collecting with described accepting groove 1313A The space of described mass 137, described mass 137 is located at the surface of described first pole piece 138. Described first pole piece 138 acts the effect supporting described mass 137 simultaneously.

Described coil groups 150 is used for driving described vibrational system 130 to move.Described coil groups 150 is solid Due to described circuit board 170 near the surface of described balancing weight 131, corresponding with described magnet steel group 133 And interval is arranged.In the present embodiment, described coil groups 150 includes four coils, two coil groups One group and two coils is become to be set up in parallel along the direction of vibration of described vibrational system 130, i.e. two groups coils Being correspondingly arranged with magnet steel group 133 described in two, the lead-in wire of coil is welded in described circuit board 170.

Described circuit board 170 is for providing electric current for described coil groups 150.Described circuit board 170 is solid Due to described shell 110.Specifically, described circuit board 170 is fixed on described frame 115, is located in The fixed part 1153 of described frame 115.In the present embodiment, described circuit board 170 quantity is two, It is divided into described first pole piece 138 both sides, and is generally aligned in the same plane with described first pole piece 138.When So, in other embodiments, described circuit board 170 can also be only one piece of circuit board.

The quantity of described Flexible Connector 180 is two, is divided into the two ends of described vibrational system 130, For described, described vibrational system 130 is suspended in described receiving space 110A.Described Flexible Connector Described second counterweight of described frame 115, the other end and described vibrational system 130 is fixed in 180 one end The outer surface of block 1313 connects.

Further, do not fix, with described frame 115, the table being connected at described Flexible Connector 180 Face and the surface configuration not being connected with described second balancing weight 1313 have buffer substrate tablet 190.Described buffer substrate tablet 190 when being steel material, can strengthen the rigidity of described Flexible Connector 180, and it is fixing more firm to make, Increase its service life.

The vibrating motor that this utility model provides, has the advantages that

One, this utility model is by being provided for regulating described vibrating motor 100 at described balancing weight 131 The mass 137 of resonant frequency, the quality of described mass 137 can record according to a upper operation Resonant frequency parameter is adjusted, and changes described vibration system by the quality changing described mass 137 The gross mass of system 130 is to reduce the dispersion ratio impact on resonant frequency of spring constant, it is ensured that production The concordance of final products vibrating motor 100 resonant frequency.

Two, offering accepting groove 1313A at described balancing weight 131 two ends, described mass 137 houses In described accepting groove 1313A and be located at described first pole piece 138, described first pole piece 138 1 aspect For armoured magnetic field, reduce the leakage field of described vibrating motor 100, on the other hand can be used to arrange quality Block 137, plays the effect positioning described mass 137.

Three, the middle part at described first balancing weight 131 arranges described bracer 135, described bracer 135 are partially housed in described first balancing weight 1311 and abut with described first pole piece 138, described Bracer 137 abuts described first pole piece 138 and can support described first pole piece 138, prevents described the One pole piece 138 deforms because of the attraction by described magnet steel group 133.

Four, described shell 110 is by frame 115 and the upper cover plate 111 that is covered on described frame 115 both sides Surrounding with lower cover 113, described frame 115 quantity is two, identical and be symmetrical arranged permissible It is combined as a complete frame structure with four sidewalls, described frame 115 is provided with permanent circuit The fixed part 1153 of plate 170, ease of assembly is dismantled.

The foregoing is only preferred embodiment of the present utility model, be not limited to this practicality new Type, for a person skilled in the art, this utility model can have various modifications and variations.All Within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, Within should be included in protection domain of the present utility model.

Claims (10)

1. a vibrating motor, including tool receiving space shell, be arranged in described receiving space and The Flexible Connector that is connected with described shell, it is suspended at described receiving space by described Flexible Connector Vibrational system and drive the coil groups that described vibrational system moves, described vibrational system includes counterweight Block, it is characterised in that described vibrational system also includes for regulating described vibrating motor resonant frequency Mass, described mass is arranged on described balancing weight.

Vibrating motor the most according to claim 1, it is characterised in that described balancing weight two ends set Having accepting groove, described mass quantity is two pieces, is contained in described accepting groove respectively.

Vibrating motor the most according to claim 2, it is characterised in that described balancing weight includes leaning on The first surface of nearly described coil groups and the second surface being oppositely arranged with described first surface, described receipts Tank is formed along described first surface to described second surface direction depression.

Vibrating motor the most according to claim 3, it is characterised in that described vibrational system is also wrapped Including the first pole piece, described first pole piece is located at the first surface of described balancing weight and encloses with described accepting groove Becoming to house the space of described mass, described mass is attached on described first pole piece.

Vibrating motor the most according to claim 4, it is characterised in that described vibrational system is also wrapped Including the second pole piece, described second pole piece is located at the second surface of described balancing weight.

Vibrating motor the most according to claim 4, it is characterised in that described balancing weight includes also First balancing weight of row setting and two the second balancing weights, two described second balancing weights are divided into described The two ends of the first balancing weight, described first balancing weight and the close described coil groups of described second balancing weight Surface be positioned between Different Plane, and described first pole piece and described first balancing weight and there is gap, Described coil groups is contained in described gap.

Vibrating motor the most according to claim 6, it is characterised in that described accepting groove is located at institute Stating the second balancing weight, described accepting groove runs through described second counterweight along the direction of vibration of described vibrational system Block.

Vibrating motor the most according to claim 6, it is characterised in that described vibrational system is also wrapped Including bracer, described bracer is located at the middle part of described first balancing weight and described bracer and described the One pole piece abuts and arranges.

9. according to the vibrating motor described in any one of claim 4 to 8, it is characterised in that described in shake Galvanic electricity machine also includes that two circuit boards, described circuit board are divided into described first pole piece both sides and are fixed on institute Stating shell, described coil is fixed on described circuit board and electrically connects with described circuit board.

Vibrating motor the most according to claim 9, it is characterised in that it is right that described shell includes Claiming two frames arranging and being connected, described frame includes the sidewall arranged along described vibrational system direction And the fixed part of fixing described circuit board, described fixed part includes by described sidewall to described receiving space The extension of interior extension and by described extension two ends to the bending extended near described vibrational system direction Portion, in the groove that described circuit board is located in described extension and described kink surrounds.