CN215731140U

CN215731140U - Sintered neodymium-iron-boron magnet

Info

Publication number: CN215731140U
Application number: CN202122178601.XU
Authority: CN
Inventors: 杨永; 杨州
Original assignee: Wenzhou Beidou Magnetic Industry Co ltd
Current assignee: Wenzhou Beidou Magnetic Industry Co ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2022-02-01
Anticipated expiration: 2031-09-09

Abstract

The utility model discloses a sintered NdFeB magnet, which belongs to the field of magnets and comprises a protective box, wherein the upper end of the protective box is rotatably connected with a box cover, the inner bottom end of the protective box is fixedly connected with a buffer sleeve, a sintered NdFeB magnet body is arranged in the buffer sleeve, the outer end of the protective box is chiseled with a pair of bilaterally symmetrical through holes, the outer side of the protective box is provided with a pair of bilaterally symmetrical fixed frames, the fixed frames penetrate through the through holes and extend into the protective box to be contacted with the buffer sleeve, the outer end of the fixed frames is chiseled with a pair of bilaterally symmetrical insertion holes, the outer end of the fixed frames is provided with a push rod, the push rod penetrates through the insertion holes and extends into the fixed frames, a telescopic spring is fixedly connected between the inner wall of the fixed frames and the outer end of the push rod, the sintered NdFeB magnet body can be protected through the buffer sleeve, and the sintered NdFeB magnet body is not easy to shake in the protective box under the fixation of the fixed frames, the sintered Nd-Fe-B magnet body is not easy to damage.

Description

Sintered neodymium-iron-boron magnet

Technical Field

The utility model relates to the field of magnets, in particular to a sintered neodymium-iron-boron magnet.

Background

The neodymium magnet is also called neodymium-iron-boron magnet, is a tetragonal crystal formed by neodymium, iron and boron, in 1982, the Zuochuan true man of the resident special metal finds the neodymium magnet, the magnetic energy product of the magnet is larger than that of the samarium-cobalt magnet, and is the substance with the largest magnetic energy product all over the world at that time, later, the resident special metal successfully develops a powder metallurgy method, the general automobile company successfully develops a rotary spray smelting method, and can prepare the neodymium-iron-boron magnet, the magnet is a permanent magnet which is only second to the absolute zero-degree holmium magnet at present, and is also the most commonly used rare earth magnet, the neodymium-iron-boron magnet is widely applied to electronic products, such as hard disks, mobile phones, earphones, tools powered by batteries, and the like, the neodymium-iron-boron is divided into sintered neodymium-iron-boron and bonded neodymium-iron-boron, and the bonded neodymium-iron-boron has magnetism in all directions and is corrosion-resistant; the sintered neodymium iron boron is easy to corrode, the surface of the sintered neodymium iron boron needs to be coated with zinc, nickel, environment-friendly zinc, environment-friendly nickel, nickel copper nickel, environment-friendly nickel copper nickel and the like, and the sintered neodymium iron boron is generally subjected to axial magnetization and radial magnetization according to the required working surface.

Among the prior art, the sintered neodymium iron boron magnet of majority does not have the protection nature, and sintered neodymium iron boron magnet itself is more fragile, and the sintered neodymium iron boron magnet takes place to damage easily after the collision, leads to unable the use, and causes the wasting of resources, influences the availability factor.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

Aiming at the problems in the prior art, the utility model aims to provide a sintered NdFeB magnet, which can protect a sintered NdFeB magnet body through a buffer sleeve, and the sintered NdFeB magnet body is not easy to shake in a protection box under the fixation of a fixing frame, so that the sintered NdFeB magnet body is not easy to damage.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A sintered NdFeB magnet comprises a protective box, wherein the upper end of the protective box is connected with a box cover in a rotating manner, a buffer sleeve is fixedly connected to the inner bottom end of the protective box, a sintered NdFeB magnet body is arranged in the buffer sleeve, a pair of bilateral symmetry through holes are drilled in the outer end of the protective box, a pair of bilateral symmetry fixing frames are arranged on the outer side of the protective box, the fixing frames penetrate through the through holes and extend into the protective box to be in contact with the buffer sleeve, a pair of bilateral symmetry insertion holes are drilled in the outer end of the fixing frame, a push rod is arranged at the outer end of the fixing frame and penetrates through the insertion holes and extends into the fixing frame, a telescopic spring is fixedly connected between the inner wall of the fixing frame and the outer end of the push rod, a pair of vertically symmetrical bayonet sockets are drilled in the outer end of the fixing frame, two movable plates are connected in the bayonet sockets in a rotating manner, and a pair of vertically symmetrical connecting rods are connected between the push rod and the movable plates in a rotating manner, the outer end fixedly connected with dead lever of two pairs of bilateral symmetry of protection box, rotate between dead lever and the fixed frame and be connected with the dwang, can realize protecting sintered neodymium iron boron magnet body through the cushion collar, and sintered neodymium iron boron magnet body is difficult for taking place to rock in the protection box under the fixed of fixed frame, makes sintered neodymium iron boron magnet body not fragile.

Further, the upper end of protection box and the lower extreme of lid all dig the draw-in groove that has two pairs of bilateral symmetry, the magnet piece of a pair of longitudinal symmetry of inner wall fixedly connected with of draw-in groove is located the upside the lower extreme of magnet piece is the S utmost point setting, is located the downside the upper end of magnet piece is the N utmost point setting, inhales mutually through the opposite sex of a pair of magnet piece, can make the lid more firm in the closure.

Further, the inner wall of jack is dug has a pair of spherical groove of longitudinal symmetry, the rotation in spherical groove is connected with the ball, ball and push rod sliding connection, through the setting of ball, more smooth and easy when promoting the push rod, difficult block is more laborsaving.

Further, the outer pot head of push rod is equipped with the protective sheath, the outer end of protective sheath is equipped with anti-skidding line, can prolong the life of push rod through the setting of protective sheath, through the setting of anti-skidding line, can be difficult for taking place the landing when promoting the push rod.

Further, the cushion collar adopts sponge material to make, and the cushion collar of making through sponge material can be when extrudeing sintered neodymium iron boron magnet body, protects sintered neodymium iron boron magnet body.

Further, fixedly connected with sealing washer in the opening, the inner wall of sealing washer and the outer end in close contact with of fixed frame can prevent that external dust is difficult for getting into the inside of protecting the box through setting up the sealing washer.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages that:

(1) this scheme can realize protecting sintering neodymium iron boron magnet body through the cushion collar, and sintering neodymium iron boron magnet body is difficult for taking place to rock in the protection box under the fixed of fixed frame, makes sintering neodymium iron boron magnet body not fragile.

(2) The upper end of protection box and the lower extreme of lid all dig the draw-in groove that has two pairs of bilateral symmetry, the magnet piece of a pair of longitudinal symmetry of inner wall fixedly connected with of draw-in groove, the lower extreme that is located upside magnet piece is the S utmost point setting, and the upper end that is located downside magnet piece is the N utmost point setting, inhales mutually through the opposite sex of a pair of magnet piece, can make the lid more firm in the closure.

(3) The inner wall of jack is dug has a pair of longitudinal symmetry's spherical groove, and the spherical inslot internal rotation is connected with the ball, and ball and push rod sliding connection through the setting of ball, more smooth and easy when promoting the push rod, difficult block is more laborsaving.

(4) The outer end cover of push rod is equipped with the protective sheath, and the outer end of protective sheath is equipped with anti-skidding line, can prolong the life of push rod through the setting of protective sheath, through the setting of anti-skidding line, can be difficult for taking place the landing when promoting the push rod.

(5) The cushion collar adopts sponge material to make, and the cushion collar of making through sponge material can be when extrudeing sintered neodymium iron boron magnet body, protects sintered neodymium iron boron magnet body.

(6) Fixedly connected with sealing washer in the through-hole, the inner wall of sealing washer and the outer end in close contact with of fixed frame through setting up the sealing washer, can prevent that external dust is difficult for getting into the inside of protecting the box.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a partial cross-sectional structure of the fixing frame according to the present invention;

FIG. 3 is a partial sectional view schematically showing a magnet block according to the present invention.

The reference numbers in the figures illustrate:

1. a protective case; 101. a card slot; 102. a magnet block; 2. a box cover; 3. a buffer sleeve; 4. sintering the neodymium iron boron magnet body; 5. a fixing frame; 501. a ball bearing; 6. a push rod; 601. a protective sleeve; 7. a tension spring; 8. a bayonet; 9. a movable plate; 10. a connecting rod; 11. fixing the rod; 12. rotating the rod.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1-3, a sintered nd-fe-b magnet comprises a protection box 1, a box cover 2 is rotatably connected to the upper end of the protection box 1, a buffer sleeve 3 is fixedly connected to the inner bottom end of the protection box 1, a sintered nd-fe-b magnet body 4 is arranged in the buffer sleeve 3, a pair of bilaterally symmetrical through holes are chiseled at the outer end of the protection box 1, a pair of bilaterally symmetrical fixing frames 5 are arranged at the outer side of the protection box 1, the fixing frames 5 pass through the through holes and extend into the protection box 1 to contact with the buffer sleeve 3, a pair of bilaterally symmetrical insertion holes are chiseled at the outer end of the fixing frame 5, a push rod 6 is arranged at the outer end of the fixing frame 5, the push rod 6 passes through the insertion holes and extends into the fixing frame 5, an extension spring 7 is fixedly connected between the inner wall of the fixing frame 5 and the outer end of the push rod 6, a pair of vertically symmetrical bayonets 8 are chiseled at the outer end of the fixing frame 5, and a movable plate 9 is rotatably connected in each of the two bayonets 8, the connecting rod 10 of a pair of longitudinal symmetry is connected in the rotation between push rod 6 and the fly leaf 9, and the outer end fixedly connected with of protection box 1 two pairs of bilateral symmetry's dead lever 11 rotates between dead lever 11 and the fixed frame 5 and is connected with dwang 12, can realize protecting sintered neodymium iron boron magnet body 4 through cushion collar 3, and sintered neodymium iron boron magnet body 4 is difficult for taking place to rock in protection box 1 under the fixed of fixed frame 5, makes sintered neodymium iron boron magnet body 4 not fragile.

Please refer to fig. 1 and fig. 3, two pairs of bilateral symmetry slots 101 are formed in the upper end of the protection box 1 and the lower end of the box cover 2, a pair of vertically symmetric magnet blocks 102 is fixedly connected to the inner wall of the slot 101, the lower end of the upper magnet block 102 is arranged as an S pole, the upper end of the lower magnet block 102 is arranged as an N pole, opposite attraction of the magnet blocks 102 is achieved, the box cover 2 is firmer when being closed, a pair of vertically symmetric spherical grooves are formed in the inner wall of the insertion hole, balls 501 are rotatably connected in the spherical grooves, the balls 501 are slidably connected with the push rod 6, and the push rod 6 is more smooth and easy to push through the balls 501, is not easy to clamp and is labor-saving.

Please refer to fig. 1 and 2, the outer pot head of push rod 6 is equipped with protective sheath 601, the outer end of protective sheath 601 is equipped with anti-skidding line, setting through protective sheath 601 can prolong the life of push rod 6, setting through anti-skidding line, can be difficult for taking place the landing when promoting push rod 6, cushion collar 3 adopts sponge material to make, cushion collar 3 made through sponge material can be when 4 extrudees sintered neodymium iron boron magnet body, protect sintered neodymium iron boron magnet body 4, fixedly connected with sealing washer in the opening, the inner wall of sealing washer and the outer end in close contact with of fixed frame 5, through setting up the sealing washer, can prevent that external dust is difficult for getting into the inside of protection box 1.

In the utility model, when a related technician uses the device, firstly, the sintered NdFeB magnet body 4 is put into the protective box 1 and is contacted with the buffer sleeve 3, then the two push rods 6 are simultaneously pressed, the connecting rod 10 is driven to move when the push rods 6 move, the connecting rod 10 drives the movable plate 9 to rotate into the bayonet 8 at the moment, the telescopic spring 7 is compressed, when the fixed frame 5 is contacted with the buffer sleeve 3, the push rod 6 is not pushed any more, when the push rod 6 is not stressed any more, the push rod 6 is rebounded under the reset action of the telescopic spring 7, when the push rod 6 rebounds, the connecting rod 10 drives the movable plate 9 to rotate out of the bayonet 8 and is contacted with the inner wall of the protective box 1, the fixation of the sintered NdFeB magnet body 4 in the protective box 1 is realized, and when the sintered NdFeB magnet body 4 needs to be taken out, the two push rods 6 are pulled to move towards one end far away from the buffer sleeve 3, when the push rod 6 moves, the connecting rod 10 is driven to move, at the moment, the connecting rod 10 drives the movable plate 9 to rotate into the bayonet 8, and the sintered NdFeB magnet body 4 is disassembled in the protection box 1.

The foregoing is only a preferred embodiment of the present invention; the scope of the utility model is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. The utility model provides a sintered neodymium iron boron magnet, includes protection box (1), its characterized in that: the upper end of the protection box (1) is rotatably connected with a box cover (2), the inner bottom end of the protection box (1) is fixedly connected with a buffer sleeve (3), a sintered NdFeB magnet body (4) is arranged in the buffer sleeve (3), the outer end of the protection box (1) is provided with a pair of bilateral symmetry through holes, the outer side of the protection box (1) is provided with a pair of bilateral symmetry fixing frames (5), the fixing frames (5) penetrate through the through holes and extend into the protection box (1) to be contacted with the buffer sleeve (3), the outer end of the fixing frames (5) is provided with a pair of bilateral symmetry jack holes, the outer end of the fixing frames (5) is provided with a push rod (6), the push rod (6) penetrates through the jack holes and extends into the fixing frames (5), and a telescopic spring (7) is fixedly connected between the inner wall of the fixing frames (5) and the outer end of the push rod (6), the outer end of fixed frame (5) is opened and is chiseled a pair of longitudinal symmetry's bayonet socket (8), two all rotate in bayonet socket (8) and be connected with fly leaf (9), rotate between push rod (6) and fly leaf (9) and be connected with a pair of longitudinal symmetry's connecting rod (10), the outer end fixedly connected with of protection box (1) two pairs of longitudinal symmetry's dead lever (11), it is connected with dwang (12) to rotate between dead lever (11) and fixed frame (5).

2. The sintered nd-fe-b magnet according to claim 1, wherein: the upper end of protection box (1) and the lower extreme of lid (2) all dig draw-in groove (101) that have two pairs of bilateral symmetry, the magnet piece (102) of a pair of longitudinal symmetry of inner wall fixedly connected with of draw-in groove (101) are located the upside the lower extreme of magnet piece (102) is the S utmost point setting, is located the downside the upper end of magnet piece (102) is the N utmost point setting.

3. The sintered nd-fe-b magnet according to claim 1, wherein: the inner wall of jack is excavated there is a pair of spherical groove of longitudinal symmetry, spherical inslot internal rotation is connected with ball (501), ball (501) and push rod (6) sliding connection.

4. The sintered nd-fe-b magnet according to claim 1, wherein: the outer end cover of push rod (6) is equipped with protective sheath (601), the outer end of protective sheath (601) is equipped with anti-skidding line.

5. The sintered nd-fe-b magnet according to claim 1, wherein: the buffer sleeve (3) is made of sponge materials.

6. The sintered nd-fe-b magnet according to claim 1, wherein: the inner wall of the sealing ring is in close contact with the outer end of the fixing frame (5).