CN208479893U - A kind of unicoil micro-telephone receiver based on moving magnet - Google Patents
A kind of unicoil micro-telephone receiver based on moving magnet Download PDFInfo
- Publication number
- CN208479893U CN208479893U CN201820800070.9U CN201820800070U CN208479893U CN 208479893 U CN208479893 U CN 208479893U CN 201820800070 U CN201820800070 U CN 201820800070U CN 208479893 U CN208479893 U CN 208479893U
- Authority
- CN
- China
- Prior art keywords
- vibrating
- cavity
- vibrating reed
- upper housing
- magnet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The utility model provides a kind of unicoil micro-telephone receiver based on moving magnet, including upper housing, magnetic inductive block is located at the intracorporal bottom of chamber of upper housing, upper housing and lower case make-up are arranged to form the shell with cavity, the one end of lower case is set there are two connecting terminal, magnetic core is located at the intracorporal bottom of chamber of lower case, coil winding is in the periphery of magnetic core, coil is connect with connecting terminal, diaphragm unit includes vibrating frame, the diaphragm being fitted on vibrating frame surface and the vibrating reed being fitted on the surface of diaphragm, the recessed portion of sinking is equipped in the middle part of vibrating reed, magnet is mounted in recessed portion, magnetic inductive block and magnetic core are symmetrically distributed in the two sides of magnet.The utility model uses unique moving magnet technology, and the efficiency of dynamic iron can be maintained to improve the efficiency of receiver, be easy to automate.
Description
Technical field
The utility model belongs to receiver, is more particularly to a kind of unicoil micro-telephone receiver based on moving magnet.
Background technique
The product of existing moving-coil Technology design manufacture uses stack design, is easy to automate, but volume is big, efficiency
It is low, power consumption is high, be unfavorable for realizing prolonged continuation of the journey in wireless headset application.
The existing dynamic iron technical products based on balanced armature are small in size, high-efficient, power consumption is low, but due to balanced armature
" E " type or U-typed design and balanced armature and diaphragm vibration plate special Joining Technology, be difficult to automate, it is necessary to use
A large amount of manpower produces, and brings very big challenge to cost and yield.
Utility model content
The purpose of the utility model is to provide a kind of unicoil easy to automate based on moving magnet is miniature called
Device.
One aspect according to the present utility model provides a kind of unicoil micro-telephone receiver based on moving magnet, special
Sign is, comprising:
Upper housing, for the opened type box body with cavity,
Magnetic inductive block, positioned at the intracorporal bottom of the chamber of the upper housing,
Lower case, for the opened type box body with cavity, the upper housing is arranged to be formed with the lower case make-up to be had
The cavity of the shell of cavity, the cavity of the upper housing and the lower case constitutes the cavity of the shell, and the one of the shell
End offers sound mouth, and the other end of the shell is set there are two connecting terminal,
Magnetic core, positioned at the intracorporal bottom of the chamber of the lower case,
Coil is wound in the periphery of the magnetic core, and the coil is connect with the connecting terminal,
Diaphragm unit including vibrating frame, the diaphragm being fitted on the vibrating frame surface and is fitted in the diaphragm
The middle part of vibrating reed on surface, the vibrating frame is equipped with inner hole, and the oscillating component of the vibrating reed is located in the inner hole, institute
The one side for stating vibrating reed is connected with the vibrating frame, and sky is equipped between remaining side of the vibrating reed and the vibrating frame inner hole
Gap, the outer edge of the diaphragm unit are fastened between the upper housing and lower case,
Magnet, the vibrating reed middle part are equipped with the recessed portion of sinking, and the magnet is mounted in the recessed portion, described to lead
Magnetic patch and the magnetic core are symmetrically distributed in the two sides of magnet.
In some embodiments, the magnetic inductive block is to be welded on the permeability alloys block of the upper housing intracavity bottom or be
The permeability alloys block being fastened in the upper housing bottom through-hole or the protrusion formed for the upper housing to its cavity sunken inside,
The magnetic core is to be welded on the permeability alloys block of the lower housing cavity bottom or is the lower case to its cavity sunken inside shape
At protrusion.
In some embodiments, alternating current flows through the first coil and second coil, in the magnetic inductive block
Alternating magnetic field is formed between the magnetic core.
In some embodiments, the gap described in the membrane covered between vibrating frame and the vibrating reed, the film
Part of the piece between the vibrating frame and the vibrating reed is arch shape.
In some embodiments, the vibrating frame and the vibrating reed are structure as a whole, the vibrating frame and the vibration
Movable plate fits on the surface of the same side of the diaphragm, and one side of the vibrating reed is structure as a whole with the vibrating frame, institute
It states and is equipped with gap between remaining side of vibrating reed and the inner hole of the vibrating frame.
In some embodiments, the vibrating frame and the vibrating reed are separate structure, the vibrating frame and the vibration
Movable plate is located at the two sides for fitting in the diaphragm, and one side of the vibrating reed overlaps with the vibrating reed, the vibrating reed
The inner hole of remaining side and the vibrating frame is equipped with gap.
In some embodiments, the cavity of the shell is separated into two cavitys, the sound out by the diaphragm unit
Mouth is provided with the end of the lesser shell of the cavity volume.
In some embodiments, the magnetic core and when the coil opposite with the magnet, the magnetic core and the line
The bottom of circle is equipped with protection board, and when the magnetic inductive block is opposite with the magnet, the bottom of the magnetic inductive block is equipped with protection board.
It has the advantage that: the utility model uses unique moving magnet technology, i.e., magnet is in movement shape at work
The magnet of state, oscillating component is lighter relative to the vibration end of the balanced armature of dynamic iron design the inside, and the movement of magnet directly drives
Vibrating reed movement eliminates the special Joining Technology in dynamic iron design from balanced armature to diaphragm, saves space, can maintain
The efficiency of dynamic iron even further increases the efficiency of receiver, on the basis of keeping the volume of dynamic iron, design is become to stack
Design, be highly susceptible to automating, it is ensured that quality, cost and the suddenly big or suddenly small requirement to amount of product.
Detailed description of the invention
Fig. 1 is a kind of explosion signal of unicoil micro-telephone receiver based on moving magnet of the utility model embodiment one
Figure；
Fig. 2 is a kind of section view signal of unicoil micro-telephone receiver based on moving magnet of the utility model embodiment one
Figure；
Fig. 3 is a kind of explosion signal of unicoil micro-telephone receiver based on moving magnet of the utility model embodiment two
Figure；
Fig. 4 is a kind of section view signal of unicoil micro-telephone receiver based on moving magnet of the utility model embodiment two
Figure；
Fig. 5 is a kind of explosion signal of unicoil micro-telephone receiver based on moving magnet of the utility model embodiment three
Figure；
Fig. 6 is a kind of section view signal of unicoil micro-telephone receiver based on moving magnet of the utility model embodiment three
Figure；
Fig. 7 is a kind of explosion signal of unicoil micro-telephone receiver based on moving magnet of the utility model embodiment four
Figure；
Fig. 8 is a kind of section view signal of unicoil micro-telephone receiver based on moving magnet of the utility model embodiment four
Figure.
Specific embodiment
To make the above-mentioned purpose of the utility model, feature and a little can be more obvious and easy to understand, with reference to the accompanying drawing and tool
Body embodiment is described in further detail the utility model.
In this text, so-called " one embodiment " or " embodiment ", which refers to, may be included at least one reality of the utility model
A particular feature, structure, or characteristic in existing mode." in one embodiment " that different places occur in the present specification is not equal
Refer to the same embodiment, nor the individual or selective embodiment mutually exclusive with other embodiments.
Embodiment one
Fig. 1 and Fig. 2 schematically shows that a kind of unicoil based on moving magnet of embodiment of the utility model is micro-
Type receiver.As depicted in figs. 1 and 2, should unicoil micro-telephone receiver based on moving magnet 5 include upper housing 11, magnetic inductive block 71,
Lower case 12, magnetic core 72, coil 32,44 component 4 of diaphragm and magnet 5.
Upper housing 11 is the opened type box body with cavity.The material of upper housing 11 is permeability magnetic material, has the function of magnetic conduction.
Magnetic inductive block 71 is located at the intracorporal bottom of chamber of upper housing 11.Magnetic inductive block 71 is welded on bottom in 11 cavity of upper housing.Lower case 12
For the opened type box body with cavity.The material of lower case is permeability magnetic material, has the function of magnetic conduction.Upper housing 11 and lower case 12
Make-up is arranged to form the shell with cavity.The inner chamber body of upper housing 11 and the inner chamber body of lower case 12 collectively form the chamber of shell
Body.The end of shell is equipped with sound mouth 111.The cavity of shell is separated into two cavitys, sound mouth 111 and chamber by diaphragm unit 4
The shell of body small volume is connected to.In this embodiment, the cavity volume of upper housing 11 is less than the cavity volume of lower case 12, out
Sound mouth 111 is set to the end of upper housing 11.Sound mouth 111 is opened in the small side of cavity, and the big side of cavity is made at work
For damping, the big damping of cavity is small, and compression or the air function to be done for stretching airtight cavity are few, is conducive to output.The end of shell
Equipped with sound tube 6.Sound tube 6 is straight tube-like, and the one end of sound tube 6 is welded on the end of shell, sound mouth 111 and sound tube
6 are connected.The sound that receiver generates is issued from sound mouth 111, is outwardly spread using sound tube 6.The one of lower case 12
End is set there are two connecting terminal 22.Magnetic core 72 is located at the intracorporal bottom of chamber of lower case 12.Magnetic core 72 is to be welded on lower case
The permeability alloys block of bottom in 12 cavity, permeability alloys block are the cylindrical body made of permeability magnetic material, are also possible to cuboid
Or other shapes.Coil 32 can be directly wound on magnetic core 72, can also be first by after the completion of 32 coiling of coil, then be set in magnetic core
On 72.The initial line 321 and end lines 322 of coil 32 are connect with two connecting terminals 22 of 21 end of lower case respectively.At this
In embodiment, magnetic core 72 and magnetic patch 5 are opposite, have protection board made of non-magnet material in the bottom of magnetic core 72 and coil 32
8, prevent magnet 5 and magnetic core during the work time close to when inhaled it is dead,.Diaphragm unit 4 includes vibrating frame 41, is fitted in vibrating frame
Diaphragm 44 on 41 surfaces and the vibrating reed 43 being fitted on the surface of diaphragm 44.The middle part of vibrating frame 41 is equipped with inner hole, vibration
The oscillating component of movable plate 43 is located in inner hole.One side of vibrating reed 43 is connect with vibrating frame 41, remaining side of vibrating reed 43 and vibration
Gap is equipped between the inner port edge of dynamic frame 41.Gap section is covered by diaphragm 44, and the part that diaphragm 4 covers gap is protrusion
Shape can reduce resistance, increase the Oscillation Amplitude of vibrating reed 43.In this embodiment, vibrating frame 41 and vibrating reed 43 are integrated knot
Structure.On the surface of the same side that vibrating frame 41 and vibrating reed 43 are located at diaphragm 44.One side of vibrating reed 43 and vibrating frame 41 it is interior
Bore edges are structure as a whole, and gap is equipped between remaining side of vibrating reed 43 and the inner port edge of vibrating frame 41.In the embodiment
In, vibrating frame 41, the inner hole of vibrating frame 41 and vibrating reed 43 are rectangular-shape, in practical applications, vibrating frame 41, vibrating frame
41 inner hole and vibrating reed 43 can also be other shapes.In other embodiments, vibrating frame 41 and vibrating reed 43 can also be
Separate structure, vibrating frame 41 and vibrating reed 43 are located on the surface of the two sides of diaphragm 44.One side of vibrating frame 41 and vibrating frame 43
Overlapping, lap are used as the fulcrum vibrated for vibrating reed 43, remaining side of vibrating reed 43 with vibrate hole 43 inner port edge it
Between be equipped with gap, convenient for the vibration of vibrating reed 43.The outer edge of diaphragm unit 4 is fastened between upper housing 11 and lower case 12.
The middle part of vibrating reed 43 is equipped with the recessed portion 43 of sinking, and magnet 5 is mounted in recessed portion 43.In this embodiment, diaphragm 44 with
The open-mouth of upper housing 11 fits, and vibrating frame 41 and the open-mouth of the lower case 12 fit.The middle part court of vibrating reed 43
To 11 stroke recessed portion of upper housing, magnet 5 and magnetic core 72 are opposite, are equipped with protection board 8 in the bottom of magnetic core 72 and coil 32, prevent
Only magnet 5 and magnetic core during the work time close to when inhaled dead, protective device improves counterplea performance.
The magnet 5 of the utility model is the permanent magnet suitably to magnetize, and the permanent magnet suitably to magnetize is in unsaturation and magnetizes shape
The sensitivity of receiver is arrived in state, the horizontal embodiment magnetized, and the magnet 5 on vibrating reed 43 is located at the centre of magnetic inductive block 71 and magnetic core 72
Equilibrium state is in stress, the alternating current of flowing through coil produces between magnetic inductive block and magnetic core when being powered to coil
Raw alternating magnetic field, magnet are generated reciprocating machine movement by the magnetic force of alternation, and magnetic energy pushes magnet 5 to move up and down and then is converted to
Mechanical energy, the magnet 5 moved up and down drive the up-down vibration of vibrating reed 43, and the intracorporal air of epicoele in upper housing 11 is by diaphragm
44 release or suck, so that air be agitated to make a sound, form sound press, and then sounding in sound mouth 111.It is monocoil called
Device small volume is suitable for the higher receiver of volume requirement.
The utility model is the structure stacked, it is easy to accomplish automated production, the unicoil based on moving magnet are miniature called
The preparation method of device includes the following steps:
Prepare upper housing 11, opens up sound mouth 111, and the bottom in the cavity of upper housing 11 in the one end of upper housing 11
Magnetic inductive block 71 is welded, or the bottom of upper housing 11 is formed into protrusion as magnetic inductive block 71 to its cavity sunken inside, or by upper housing
11 bottom opens up through-hole 112, and magnetic inductive block 71 is fastened in through-hole 112, and upper housing component is made.
Prepare lower case 12, connecting terminal 22 is installed in the one end of lower case 12.
The coiling 32 on magnetic core 72, and will be wound with coil 32 magnetic core 72 be packed into lower case 12 cavity in, will under
12 bottom of shell is welded and fixed with magnetic core 72, and coil 32 is connect with connecting terminal 22, and lower case component is made.
Prepare diaphragm unit, the preparation method for the diaphragm unit that vibrating frame and vibrating reed are structure as a whole, comprising: Reserve Fund
Belong to thin slice, the vibrating reed 43 positioned at the vibrating frame 41 of periphery and positioned at middle part produced using Sheet Metal Forming Technology on sheet metal,
Diaphragm 44 is fitted on the surface of vibrating frame 41 and vibrating reed 43, and makes diaphragm 44 between vibrating frame 41 and vibrating reed 43
Gap part be arch shape.And magnet 5 is mounted on vibrating reed 43.
The diaphragm unit 4 for being equipped with magnet 5 is covered on to the opening of lower case component, then upper housing component is tipped upside down on into film
It on piece component 4, and is fixedly connected, sound mouth 111 and connecting terminal 22 is made to be located at the two sides of shell,
Sound tube 6 is installed in the end that shell is provided with sound mouth 111,6 inner passage of sound tube is connected with sound mouth 111
It is logical.
Embodiment two
As shown in Figure 3 and Figure 4, on the basis of example 1, magnetic inductive block 71 is changed to upper housing 11 to its cavity indent
It falls into and forms protrusion.
Embodiment three
As shown in Figure 5 and Figure 6, on the basis of example 1, magnetic inductive block 71 is changed to upper housing 11 to its cavity indent
It falls into and forms protrusion.Magnetic core 72 is changed to the protrusion that lower case 12 is formed to its cavity sunken inside, it first will be after the completion of 32 coiling of coil
It is set on magnetic core 72 again.
Example IV
As shown in Figure 7 and Figure 8, on the basis of example 1, the bottom of upper housing 11 offers through-hole 112, by magnetic conduction
Block 71 is fastened in through-hole 112.During the installation process, convenient for adjusting position of the magnetic inductive block 71 in through-hole 112, so that magnetic conduction
Block 71 and magnetic core 72 are symmetrically dispersed in the two sides of magnetic patch 5.The edge of through-hole 112 is the curved arc into the cavity of upper housing 11
Face, convenient for magnetic inductive block 71 to be fastened in through-hole 112.
In other embodiments: coil can be increased in the magnetic inductive block 71 of upper housing 11 and carry out raising efficiency and improve to be distorted；It can
It is in magnet 5 opposite with magnetic core 72 in order to avoid setting protection board 8, thus protective device improves in magnet 5 and opposite magnetic core 72
Drop resistant performance；Protection board 8 can be set in the one side opposite with magnet 5 of magnetic inductive block 71 when magnetic core 5 is opposite with magnetic inductive block 71, or
In the one side opposite with magnetic inductive block 71 of magnet 5 protection board 8 is set, thus protective device improves drop resistant performance.
Above-described is only some embodiments of the utility model.For those of ordinary skill in the art, exist
Under the premise of not departing from the concept of the present invention and working principle, various modifications and improvements can be made, these all belong to
In the protection scope of the utility model.
Claims (8)
1. a kind of unicoil micro-telephone receiver based on moving magnet characterized by comprising
Upper housing, for the opened type box body with cavity,
Magnetic inductive block, positioned at the intracorporal bottom of the chamber of the upper housing,
Lower case, for the opened type box body with cavity, the upper housing and the lower case make-up are arranged to be formed with cavity
Shell, the cavity of the cavity of the upper housing and the lower case constitutes the cavity of the shell, the one end of the shell
Sound mouth is offered, the other end of the shell is set there are two connecting terminal,
Magnetic core, positioned at the intracorporal bottom of the chamber of the lower case,
Coil is wound in the periphery of the magnetic core, and the coil is connect with the connecting terminal,
Diaphragm unit, including vibrating frame, the diaphragm being fitted on the vibrating frame surface and the surface for being fitted in the diaphragm
On vibrating reed, the middle part of the vibrating frame is equipped with inner hole, and the oscillating component of the vibrating reed is located in the inner hole, the vibration
One side of movable plate is connected with the vibrating frame, and gap is equipped between remaining side of the vibrating reed and the vibrating frame inner hole,
The outer edge of the diaphragm unit is fastened between the upper housing and lower case,
Magnet, the vibrating reed middle part are equipped with the recessed portion of sinking, and the magnet is mounted in the recessed portion, the magnetic inductive block
The two sides of magnet are symmetrically distributed in the magnetic core.
2. the unicoil micro-telephone receiver according to claim 1 based on moving magnet, which is characterized in that the magnetic inductive block is
It is welded on the permeability alloys block of the upper housing intracavity bottom or the permeability alloys to be fastened in the upper housing bottom through-hole
Block or the protrusion formed for the upper housing to its cavity sunken inside, the magnetic core are to be welded on the lower housing cavity bottom
Permeability alloys block or the protrusion formed for the lower case to its cavity sunken inside.
3. the unicoil micro-telephone receiver according to claim 1 based on moving magnet, which is characterized in that alternating current flows through
The coil forms alternating magnetic field between the magnetic inductive block and the magnetic core.
4. the unicoil micro-telephone receiver according to claim 1 based on moving magnet, which is characterized in that the membrane covered
Gap between the vibrating frame and the vibrating reed, part of the diaphragm between the vibrating frame and the vibrating reed
For arch shape.
5. the unicoil micro-telephone receiver according to claim 4 based on moving magnet, which is characterized in that the vibrating frame and
The vibrating reed is structure as a whole, on the surface of the same side that the vibrating frame and the vibrating reed fit in the diaphragm, institute
The one side and the vibrating frame for stating vibrating reed are structure as a whole, between remaining side of the vibrating reed and the inner hole of the vibrating frame
Equipped with gap.
6. the unicoil micro-telephone receiver according to claim 1 based on moving magnet, which is characterized in that the vibrating frame with
The vibrating reed is separate structure, and the vibrating frame and the vibrating reed are located at the two sides for fitting in the diaphragm, the vibration
One side of piece overlaps with the vibrating reed, remaining side of the vibrating reed and the inner hole of the vibrating frame are equipped with gap.
7. the unicoil micro-telephone receiver according to claim 1 based on moving magnet, which is characterized in that the diaphragm unit
The cavity of the shell is separated into two cavitys, the sound mouth is provided with the end of the lesser shell of the cavity volume.
8. the unicoil micro-telephone receiver according to claim 1 based on moving magnet, which is characterized in that the magnetic core and institute
State coil it is opposite with the magnet when, the bottom of the magnetic core and the coil is equipped with protection board, the magnetic inductive block and the magnetic
The bottom of iron phase clock synchronization, the magnetic inductive block is equipped with protection board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820800070.9U CN208479893U (en) | 2018-05-28 | 2018-05-28 | A kind of unicoil micro-telephone receiver based on moving magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820800070.9U CN208479893U (en) | 2018-05-28 | 2018-05-28 | A kind of unicoil micro-telephone receiver based on moving magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208479893U true CN208479893U (en) | 2019-02-05 |
Family
ID=65219010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820800070.9U Active CN208479893U (en) | 2018-05-28 | 2018-05-28 | A kind of unicoil micro-telephone receiver based on moving magnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208479893U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650576A (en) * | 2018-05-28 | 2018-10-12 | 苏州三色峰电子有限公司 | A kind of unicoil micro-telephone receiver and preparation method thereof based on moving magnet |
-
2018
- 2018-05-28 CN CN201820800070.9U patent/CN208479893U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650576A (en) * | 2018-05-28 | 2018-10-12 | 苏州三色峰电子有限公司 | A kind of unicoil micro-telephone receiver and preparation method thereof based on moving magnet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207022203U (en) | A kind of moving-iron receiver with New Magnetic Field Controlled guide structure | |
| CN102045626B (en) | Moving-magnetic type ultrathin telephone receiver | |
| CN106954159A (en) | A kind of super-thin plane magnetic film full frequency speaker | |
| CN206313986U (en) | A kind of moving-iron receiver | |
| CN208479893U (en) | A kind of unicoil micro-telephone receiver based on moving magnet | |
| CN108650576A (en) | A kind of unicoil micro-telephone receiver and preparation method thereof based on moving magnet | |
| CN208522987U (en) | A kind of twin coil micro-telephone receiver based on moving magnet | |
| CN105187987B (en) | A kind of magnetic driving mechanism and the receiver including the magnetic driving mechanism | |
| CN207022201U (en) | A kind of receiver | |
| CN201682610U (en) | Audio frequency electromagnetic vibration energy converter | |
| CN104581583B (en) | A kind of preparation method of novel moving iron unit and iron core | |
| CN206993397U (en) | Vibration component and the acoustical generator including the vibration component | |
| CN206365040U (en) | A kind of receiver | |
| CN206251328U (en) | Magnetic film oscillating flat plate loudspeaker | |
| CN209345399U (en) | A kind of receiver | |
| CN108574895B (en) | A kind of no magnetic leakage receiver and preparation method thereof | |
| CN208971790U (en) | A kind of diaphragm unit and the receiver based on the diaphragm unit | |
| CN208783042U (en) | A kind of slim receiver | |
| CN108513232A (en) | A kind of loud speaker | |
| CN208015996U (en) | Receiver and electronic equipment | |
| CN207340181U (en) | A kind of Novel receiver with automatic positioning coil | |
| CN208190921U (en) | A kind of diaphragm and receiver | |
| CN207251899U (en) | A kind of armature and moving-iron receiver | |
| CN207321548U (en) | A kind of receiver with three-level gradual change type high frequency armature | |
| CN101754075A (en) | Improved structure of loudspeaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |