CN212785128U - Split type linear motor - Google Patents

Abstract

The utility model discloses a split type linear motor, including casing (1), and install active cell subassembly and stator module in casing (1), active cell subassembly includes tungsten block (7), insert (6), permanent magnet (3), spring leaf (4) and yoke (2), stator module includes F-PCB (9), coil (8) and support (10), coil (8) and F-PCB (9) fixed connection are on linear motor's support (10), install in the spring leaf (4) outside stop block (5), the spring leaf is pressed from both sides in the middle of stop block and tungsten block or the casing, a problem for transferring stress concentration, coil (8) are located the magnetic field scope of permanent magnet (3). The utility model discloses it is close to adopt stainless steel and spring leaf melting point to insert, but to a great extent reduces welding temperature during laser welding to can its fixed power of effectual assurance, reduce the risk that the bead splashes and spring leaf part position is difficult for melting.

Description

Split type linear motor

Technical Field

The utility model relates to the field of electric machines, concretely relates to split type linear electric motor.

Background

The linear motor generally comprises a rotor assembly and a stator assembly, wherein the rotor assembly comprises a tungsten block, an insert, a permanent magnet, a spring plate, a yoke, a stop block and the like; the stator assembly includes an F-PCB, a coil, a bracket, etc.

When the spring piece (stainless steel material) and the tungsten block (tungsten alloy material) are directly welded by laser, the difference of melting points of the two materials is large, so that the problems that the consistency of welding and fixing force is poor, more welding bead particles cause high reject ratio of motor noise, part of the spring piece is melted to cause easy breakage in a service life test and the like are caused.

Disclosure of Invention

The utility model aims to solve the technical problem that a split type linear motor, it adopts stainless steel material and spring leaf melting point to be close to insert, but to a great extent reduces welding temperature during laser welding to can its fixed power of effectual assurance, reduce the risk that the bead splashes and spring leaf part position is difficult for melting.

The utility model discloses a realize through following technical scheme: a split type linear motor comprises a rotor assembly and a stator assembly, wherein the rotor assembly comprises a tungsten block, an insert, a permanent magnet, a spring piece and a yoke, the stator assembly comprises an F-PCB (printed circuit board), a coil and a bracket, and the coil and the F-PCB are fixedly connected to the bracket of the linear motor; the tungsten block and the permanent magnet are fixedly connected together, the insert is connected with the tungsten block in an embedded split mode, the spring piece is connected between the insert and the shell, the coil is located in the magnetic field range of the permanent magnet, the spring piece supports the tungsten block, the insert is made of stainless steel materials and is made of the same materials as the spring piece, the stop block is installed on the outer side of the spring piece, and the spring piece is clamped between the stop block and the tungsten block or the shell.

As a preferred technical scheme, a space is reserved towards the middle of the tungsten block, and a permanent magnet is installed in the space.

As a preferred technical scheme, the permanent magnets are arranged in a Halbach array mode.

As the preferred technical scheme, the insert and the tungsten block are fixed by pressing or glue or riveting, or the two elements are tightly combined together by adopting in-mold injection molding sintering.

As a preferred technical solution, the processing of the insert may be die casting, machining, sintering, etc., and the material is not limited to stainless steel, but may be other materials with similar melting points.

As a preferential technical scheme, the insert is arranged according to actual needs to protrude a certain height of the tungsten block, a gap is reserved between the insert and the tungsten block during welding, and the spring piece and the tungsten block are prevented from colliding to generate noise during resonant vibration.

The utility model has the advantages that: the utility model discloses an it is close to adopt stainless steel and spring leaf melting point to insert, but to a great extent reduces welding temperature during laser welding to can its fixed power of effectual assurance, reduce the risk that the bead splashes and spring leaf part position is difficult for melting.

Drawings

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

FIG. 1 is an exploded view of the present invention;

fig. 2 is an internal cross-sectional view of the present invention.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

This specification includes any features disclosed in the appended claims, abstract and drawings, which are, unless expressly stated otherwise, replaceable with other equivalent or similarly purposed alternative features. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

In the description of the present invention, it is to be understood that the terms "one end", "the other end", "the outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The use of terms herein such as "upper," "above," "lower," "below," and the like in describing relative spatial positions is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented 90 degrees or at other orientations and the spatially relative descriptors used herein interpreted accordingly

In the present invention, unless otherwise explicitly specified or limited, the terms "set", "coupled", "connected", "penetrating", "plugging", and the like are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1 and fig. 2, the split linear motor of the present invention comprises a mover assembly and a stator assembly, wherein the mover assembly comprises a tungsten block 7, an insert 6, a permanent magnet 3, a spring plate 4 and a yoke 2, and the stator assembly comprises an F-PCB9, a coil 8 and a bracket 10;

the coil 8 and the F-PCB9 are fixedly connected to a bracket 10 of the linear motor; the tungsten block 7 is fixedly connected with the permanent magnet 3, the insert 6 is connected with the tungsten block 7 in an embedded split mode, the spring piece 4 is connected between the insert 6 and the shell 1, the coil 8 is located in the magnetic field range of the permanent magnet 3, the spring piece 4 supports the tungsten block, the insert 6 is made of stainless steel and made of the same material as the spring piece 4, the stop block 5 is installed on the outer side of the spring piece 4, and the spring piece is clamped between the stop block and the tungsten block or the shell.

In this embodiment, the tungsten block 7 is provided with a space in the middle thereof, and the permanent magnet 3 is installed in the space.

The permanent magnets 3 are arranged in a Halbach array mode, so that the magnetic induction intensity can be increased, and the utilization rate of the permanent magnets is improved.

In this embodiment, the processing of the insert may be die casting, machining, sintering, and the like, and the material is not limited to stainless steel, and may be other materials with similar melting points.

In the embodiment, the insert 6 is arranged to protrude the tungsten block 7 by a certain height according to actual needs, and a gap is reserved between the insert and the tungsten block 7 during welding, so that the spring piece 4 and the tungsten block 7 are prevented from colliding to generate noise during resonant vibration.

In this embodiment, the insert 6 and the tungsten block 7 are fixed by pressing, or fixing with glue, or fixing by riveting, or by using in-mold injection molding and sintering to combine the two components together.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims (5)

1. A split linear motor characterized by: the stator comprises a casing (1), a rotor assembly and a stator assembly, wherein the rotor assembly and the stator assembly are installed in the casing (1), the rotor assembly comprises a tungsten block (7), an insert (6), a permanent magnet (3), a spring piece (4), a stop block (5) and a yoke (2), the stator assembly comprises an F-PCB (9), a coil (8) and a support (10), and the coil (8) and the F-PCB (9) are fixedly connected to the support (10) of the linear motor;

tungsten piece (7) and permanent magnet (3) fixed connection together, insert (6) and the embedded components of a whole that can function independently connection of tungsten piece (7), spring leaf (4) are connected between insert (6) and casing (1), and coil (8) are located the magnetic field scope of permanent magnet (3), and tungsten piece is supported in spring leaf (4), insert (6) adopt stainless steel, and it is the same with the material of spring leaf (4), and stop block (5) are installed in the spring leaf (4) outside, and the spring leaf is pressed from both sides in the middle of stop block and tungsten piece or the casing.

2. The split linear motor of claim 1, wherein: the tungsten block (7) reserves a space towards the middle, and the permanent magnet (3) is arranged in the space.

3. The split linear motor of claim 1, wherein: the permanent magnets (3) are arranged in a Halbach array mode.

4. The split linear motor of claim 1, wherein: the insert (6) and the tungsten block (7) are fixed by pressing in or glue or riveting, or the two elements are tightly combined together by adopting in-mold injection molding sintering.

5. The split linear motor of claim 1, wherein: the insert (6) is welded with the spring piece (4), the insert (6) protrudes out of the upper end surface of the tungsten block (7), and a gap is reserved between the insert and the tungsten block (7) during welding.

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