Linear motor with combined casing

Abstract

The utility model discloses a linear motor with a combined casing, which comprises a casing, an iron core and a mass block are arranged in the casing, the mass block is sleeved outside the iron core, a permanent magnet is arranged on the mass block, two sides of the mass block are connected with the inner wall of the casing through elastic sheets, the iron core is matched with a coil, and the coil is sleeved outside the iron core. A bearing plate, a surrounding plate and side plates are formed in the shell in a split mode, the iron core is arranged on the bearing plate, the side plates are arranged on the two sides of the bearing plate, the surrounding plate comprises a first folded edge, a connecting part and a second folded edge which are sequentially connected, the free end of the first folded edge is connected with the bearing plate, the two sides of the first folded edge are connected with the side plates respectively, and the connecting part is connected with the second folded edge. The two sides of the connecting part are connected with the side plates respectively, the free end of the second folded edge is connected with the bearing plate, and the two sides of the second folded edge are connected with the side plates respectively. The structure is simple, assembling is more convenient, the structural stability is high, and the good using effect is achieved.

Description

Technical Field

[0001] The utility model relates to a linear motor with a combined casing. Background Art

[0002] Due to their unique operating mechanism, linear motors with modular housings are widely used in consumer electronics and other fields. Their core principle is the reciprocating vibration of a vibrator within the motor. Through mechanical transmission, this generates regular vibrations in the device or local area where the motor is installed, providing tactile feedback to the user. However, in actual manufacturing, linear motors with modular housings face numerous technical bottlenecks. As electronic products continue to become thinner and smaller, the size of linear motors with modular housings has also continued to shrink, making their internal structures increasingly compact and complex. Within this limited space, numerous components, including drive circuits, magnets, and springs, must be integrated. The assembly process demands extremely high precision, and even the slightest operational error can lead to functional failure. Furthermore, structural packaging is crucial. If the seal is not tight, impurities such as dust and moisture can easily infiltrate the motor interior, disrupting normal operation. These factors combine to make it difficult to achieve high product yields, increasing production costs and significantly impacting the overall efficiency of the manufacturing process. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present invention provides a linear motor with a combined housing, which has a simple structure, is easier to assemble, has strong structural stability, and has good use effect.

[0004] To achieve the above-mentioned purpose, the utility model provides a linear motor with a combined housing, including a housing, an iron core and a mass block are arranged in the housing, the mass block is sleeved outside the iron core, a permanent magnet is arranged on the mass block, and the two sides of the mass block are connected to the inner wall of the housing through spring plates, the iron core is equipped with a coil, and the housing is split into a supporting plate, a surrounding plate and a side plate, the iron core is arranged on the supporting plate, and the side plates are arranged on both sides of the supporting plate, the surrounding plate includes a first folded edge, a connecting portion and a second folded edge connected in sequence, the free end of the first folded edge is connected to the supporting plate, the two sides of the first folded edge are respectively connected to the side plates, the two sides of the connecting portion are respectively connected to the side plates, the free end of the second folded edge is connected to the supporting plate, and the two sides of the second folded edge are respectively connected to the side plates.

[0005] The beneficial effect of this arrangement is that the housing is collaboratively constructed from a load-bearing plate, a surrounding plate, and side plates. The load-bearing plate serves as the core foundation, providing a stable mounting platform for the circuit board, core, and mass. The circuit board, core, and mass mounted on the load-bearing plate are first installed in an orderly manner on the load-bearing plate to ensure precise positioning of all components. The side plates are positioned on either side of the load-bearing plate, not only providing support but also forming a stable framework with the load-bearing plate during installation. After the side plates are positioned and installed, the spring clips on either side of the mass are connected to the inner wall of the housing. The elastic properties of the spring clips provide vibration space for the mass, while maintaining stability during vibration through their connection to the side plates and the load-bearing plate. The surrounding plate is composed of a first folded edge, a connecting portion, and a second folded edge, connected in sequence. The free end of the first folded edge is connected to the load-bearing plate, with both sides firmly connected to the side plates, initially forming the enclosure contour of the housing. The two sides of the connecting portion are connected to the side plates, further enhancing the lateral stability of the housing. The free end of the second folded edge is again connected to the load-bearing plate, and both sides are also tightly connected to the side plates, ultimately achieving a fully enclosed housing. This installation method not only reduces assembly difficulty but also significantly enhances the overall structural strength of the chassis through multi-dimensional connections between components. The stable connection formed by the coordinated interaction of the components reduces the accumulation of errors during assembly, effectively improving assembly efficiency. Furthermore, the well-sealed chassis structure effectively resists the intrusion of dust and moisture, ensuring the normal operation of internal components and ultimately improving product yield.

[0006] As a further configuration of the present invention, a first connecting platform for connecting to the spring sheet is formed on one end of the supporting plate close to the first folded edge, and a second connecting platform for connecting to the spring sheet is provided on one end of the surrounding plate connecting portion close to the second folded edge.

[0007] The beneficial effect of this arrangement is that the first connecting platform on the carrier plate is located near the first folded edge, and the second connecting platform on the connecting portion of the surrounding plate is located near the second folded edge. The two connecting platforms provide a stable mounting base for the spring clip through precise positioning. The ends of the spring clip are respectively fixed to the first and second connecting platforms. This structural design avoids positional offset during installation of the spring clip and ensures that it maintains a stable elastic deformation trajectory during vibration. The presence of the connecting platform not only strengthens the connection strength between the spring clip and the housing, but also reduces stress concentration during vibration through rigid support, avoiding fatigue fracture of the connection parts due to long-term high-frequency vibration, thereby extending the overall service life of the motor.

[0008] As a further configuration of the present invention, a snap-in groove and a snap-in protrusion are respectively provided between the load-bearing plate and the first folded edge, between the side plate and the first folded edge, and between the side plate and the second folded edge, and the snap-in groove and the snap-in protrusion are snap-connected.

[0009] The beneficial effect of this arrangement is that, with this arrangement, mutually constrained mechanical connections are formed between the load-bearing plate and the first folding edge, between the side panel and the first folding edge, and between the side panel and the second folding edge through the snap-fit ​​structure. When the snap-fit ​​protrusion is embedded in the snap-fit ​​groove, a tight bite effect is produced, which not only prevents the components from being displaced during assembly, but also resists lateral and longitudinal impact forces under vibration conditions, avoiding structural failure due to loosening. The positioning accuracy of the snap-fit ​​structure is extremely high, which can reduce the manual calibration steps during assembly and improve production efficiency. At the same time, this rigid connection method can evenly disperse the forces between the components, avoid local stress concentration, and enhance the overall structural strength of the casing. In addition, the snap-fit ​​design does not require additional fasteners, which not only simplifies the assembly process, but also reduces the risk of internal failures due to parts falling off, further ensuring the stability and reliability of the motor operation.

[0010] As a further configuration of the present invention, a wiring platform is extended from one end of the carrying plate close to the second folded edge, and a wiring groove is provided at a position of the second folded edge corresponding to the wiring platform.

[0011] This arrangement offers the advantage of combining the terminal block extending from the carrier plate and the wiring trough along the second folded edge to create an efficient wiring layout. The terminal block near the second folded edge of the carrier plate provides a separate mounting area for wiring, centrally securing the wiring harness and electronic components and preventing interference with the motor's internal moving parts. The wiring trough at the corresponding location on the second folded edge provides a dedicated guide channel for wiring, allowing the harness to be routed neatly along the inner wall of the housing, reducing the risk of entanglement.

[0012] As a further configuration of the present invention, an inner wall of the wiring trough is provided with a conflicting flange extending toward the wiring platform.

[0013] The beneficial effect of this arrangement is that, by increasing the support points on the inner wall of the wiring trough, the deformation resistance of the trough body is effectively improved. When the wiring harness passes through the wiring trough, the abutting flange can form a rigid support for the trough wall, avoiding the collapse and deformation of the trough body due to external force or long-term vibration, and ensuring that the line channel always remains unobstructed. From a mechanical point of view, the abutting flange forms a triangular support structure with the wiring trough and the terminal block, which can not only disperse the pulling force generated when the wiring harness is connected at the terminal block, but also offset the lateral stress caused by the shaking of the line during the vibration of the motor, and prevent cracking at the connection between the wiring trough and the second folded edge. In addition, the abutting design of the flange can also form a limiting effect on the passing wiring harness, preventing the wiring harness from excessively displacing in the trough and rubbing against the inner wall of the casing, which not only protects the insulation layer of the line, but also indirectly improves the overall stability inside the motor through structural support, providing a guarantee for long-term reliable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of the first folding direction in the first embodiment of the present invention;

[0015] Figure 2 This is a structural diagram of the second folding direction in the first embodiment of the present invention;

[0016] Figure 3 This is a schematic cross-sectional view of the first embodiment of the present invention;

[0017] Figure 4 This is a schematic structural diagram of the second embodiment of the present utility model;

[0018] Figure 5 This is a schematic cross-sectional view of a second embodiment of the present invention;

[0019] Figure 6 This is a schematic structural diagram of the third embodiment of the present utility model. DETAILED DESCRIPTION

[0020] The first embodiment of the linear motor with a combined housing of the present invention is as follows Figures 1 to 3As shown: it includes a casing, in which an iron core 4 and a mass block 5 are provided, the mass block 5 is sleeved outside the iron core 4, and a permanent magnet 51 is provided on the mass block 5. The two sides of the mass block 5 are connected to the inner wall of the casing through spring pieces 6, and the iron core 4 is equipped with a coil. The casing is split into a supporting plate 1, a surrounding plate 2 and a side plate 3. The iron core 4 is arranged on the supporting plate 1, and the side plates 3 are arranged on both sides of the supporting plate 1. The surrounding plate 2 includes a first folded edge 21, a connecting portion 22 and a second folded edge 23 connected in sequence, the free end of the first folded edge 21 is connected to the supporting plate 1, and the two sides of the first folded edge 21 are respectively connected to the side plates 3, and the two sides of the connecting portion 22 are respectively connected to the side plates 3, the free end of the second folded edge 23 is connected to the supporting plate 1, and the two sides of the second folded edge 23 are respectively connected to the side plates 3. The beneficial effect of such an arrangement is as follows: with such an arrangement, the casing is collaboratively composed of a supporting plate 1, a surrounding plate 2 and a side plate 3, and the supporting plate 1 serves as a core base, providing a stable installation platform for the circuit board, the iron core 4 and the mass block 5. First, the circuit board, the iron core 4 and the mass block 5 sleeved outside the iron core 4 are installed in order on the supporting plate 1 to ensure that each component is accurately positioned; the side plates 3 are arranged on both sides of the supporting plate 1, and their function is not only to assist in bearing, but also to form a stable frame structure with the supporting plate 1 during the installation process. After the side plates 3 are positioned and installed, the spring plates 6 on both sides of the mass block 5 are connected to the inner wall of the casing. The elastic properties of the spring plates 6 give the mass block 5 a vibration space, and at the same time, through the connection with the side plates 3 and the supporting plate 1, the stability during the vibration process is maintained. The surrounding plate 2 is composed of a first folded edge 21, a connecting portion 22 and a second folded edge 23 connected in sequence. The free end of the first folded edge 21 is connected to the load-bearing plate 1, and the two sides are firmly connected to the side panels 3, which preliminarily builds the enclosure outline of the casing; the two sides of the connecting portion 22 are connected to the side panels 3, further strengthening the lateral stability of the casing; the free end of the second folded edge 23 is connected to the load-bearing plate 1 again, and the two sides are also tightly combined with the side panels 3, finally realizing the overall closure of the casing. This installation method not only reduces the difficulty of assembly, but also greatly improves the overall structural strength of the casing through the multi-dimensional connection between the various components. The stable connection relationship formed by the mutual cooperation of the various components reduces the accumulation of errors in the assembly process and effectively improves the assembly efficiency. At the same time, the casing structure with good sealing performance can better resist the intrusion of external dust and water vapor, ensure the normal operation of internal components, and thus improve the product yield.

[0021] As a further configuration of this embodiment, a first connecting platform 12 for connecting to the spring clip 6 is formed on one end of the carrier plate 1 near the first fold 21, and a second connecting platform 221 for connecting to the spring clip 6 is provided on one end of the connecting portion 22 of the enclosing plate 2 near the second fold 23. The outer wall of the connecting portion 22 of the enclosing plate 2 is concavely arranged at the position corresponding to the second connecting platform 221. The beneficial effect of this configuration is that the first connecting platform 12 on the carrier plate 1 is located near the first fold 21, and the second connecting platform 221 of the connecting portion 22 of the enclosing plate 2 is close to the second fold 23. The two provide a stable mounting base for the spring clip 6 through precise positioning. The two ends of the spring clip 6 are respectively fixed on the first and second connecting platforms 221. This structural design avoids positional deviation of the spring clip 6 during installation, ensuring that it maintains a stable elastic deformation trajectory during vibration. The presence of the connecting platform not only enhances the connection strength between the spring clip 6 and the housing, but also reduces stress concentration during vibration through rigid support, avoiding fatigue fracture of the connecting portion 22 caused by long-term high-frequency vibration, thereby extending the overall service life of the motor.

[0022] As a further configuration of this embodiment, a snap-in groove and a snap-in protrusion 31 are respectively provided between the load-bearing plate 1 and the first folding edge 21, between the side panel 3 and the first folding edge 21, and between the side panel 3 and the second folding edge 23, and the snap-in groove and the snap-in protrusion 31 are snap-in configured. The beneficial effect of such a configuration is that, with such a configuration, mutually constrained mechanical connections are formed between the load-bearing plate 1 and the first folding edge 21, between the side panel 3 and the first folding edge 21, and between the side panel 3 and the second folding edge 23 through the snap-in structure. When the snap-in protrusion 31 is embedded in the snap-in groove, a tight bite effect is produced, which not only prevents the components from being displaced during assembly, but also resists lateral and longitudinal impact forces under vibration conditions, avoiding structural failure caused by loosening. The positioning accuracy of the snap-in structure is extremely high, which can reduce the manual calibration steps during assembly and improve production efficiency. At the same time, this rigid connection method can evenly distribute the forces between the components, avoid local stress concentration, and enhance the overall structural strength of the casing. In addition, the snap-on design does not require additional fasteners, which not only simplifies the assembly process but also reduces the risk of internal failures caused by parts falling off, further ensuring the stability and reliability of the motor operation.

[0023] As a further arrangement of this embodiment, a terminal block 11 is extended from one end of the carrier plate 1 near the second folded edge 23, and a wiring groove 231 is provided at the position of the terminal block 11 corresponding to the second folded edge 23. The beneficial effect of this arrangement is that the terminal block 11 extending from the carrier plate 1 and the wiring groove 231 of the second folded edge 23 form an efficient line layout scheme. The terminal block 11 of the carrier plate 1 near the second folded edge 23 provides an independent installation area for line connection, which can centrally fix the connection wire harness and electronic components to avoid interference between the wire harness and the moving parts inside the motor. The wiring groove 231 at the corresponding position of the second folded edge 23 provides an exclusive guide channel for the line, so that the wire harness can be arranged in an orderly manner along the inner wall of the casing, reducing the risk of entanglement.

[0024] As a further configuration of this embodiment, the inner wall of the wiring trough 231 extends toward the terminal block 11 with a resisting flange 232. The beneficial effect of this configuration is that, by increasing the support points of the inner wall of the wiring trough 231, the deformation resistance of the trough body is effectively improved. When the wiring harness passes through the wiring trough 231, the resisting flange 232 can form a rigid support for the trough wall, thereby preventing the trough body from collapsing or deforming due to external force or long-term vibration, and ensuring that the line channel always remains unobstructed. From a mechanical point of view, the resisting flange 232 forms a triangular support structure with the wiring trough 231 and the terminal block 11, which can not only disperse the pulling force generated when the wiring harness is connected at the terminal block 11, but also offset the lateral stress caused by the shaking of the line during the vibration of the motor, thereby preventing cracks from occurring at the connection between the wiring trough 231 and the second folded edge 23. In addition, the flange's interference design can also limit the wiring harness passing through it, preventing it from excessively displacing in the slot and rubbing against the inner wall of the casing. This not only protects the line insulation layer, but also indirectly improves the overall stability inside the motor through structural support, providing a guarantee for long-term reliable operation.

[0025] The second embodiment of the linear motor with a combined housing of the present invention is as follows Figures 4 and 5 As shown: it includes a casing, in which an iron core 4 and a mass block 5 are provided, the mass block 5 is sleeved outside the iron core 4, and a permanent magnet 51 is provided on the mass block 5. The two sides of the mass block 5 are connected to the inner wall of the casing through spring pieces 6, and the iron core 4 is equipped with a coil. The casing is split into a supporting plate 1, a surrounding plate 2 and a side plate 3. The iron core 4 is arranged on the supporting plate 1, and the side plates 3 are arranged on both sides of the supporting plate 1. The surrounding plate 2 includes a first folded edge 21, a connecting portion 22 and a second folded edge 23 connected in sequence, the free end of the first folded edge 21 is connected to the supporting plate 1, and the two sides of the first folded edge 21 are respectively connected to the side plates 3, and the two sides of the connecting portion 22 are respectively connected to the side plates 3, the free end of the second folded edge 23 is connected to the supporting plate 1, and the two sides of the second folded edge 23 are respectively connected to the side plates 3.

[0026] As a further configuration of this embodiment, a snap-in groove and a snap-in protrusion 31 are respectively provided between the supporting plate 1 and the first folded edge 21, between the side plate 3 and the first folded edge 21, and between the side plate 3 and the second folded edge 23, and the snap-in groove and the snap-in protrusion 31 are snap-connected.

[0027] As a further configuration of this embodiment, a wiring platform 11 extends from one end of the carrier plate 1 close to the second folded edge 23 , and a wiring groove 231 is provided at a position of the second folded edge 23 corresponding to the wiring platform 11 .

[0028] As a further configuration of this embodiment, an abutting flange 232 is extended from the inner wall of the wiring groove 231 toward the connection platform 11 .

[0029] The third embodiment of the linear motor with a combined housing of the present invention is as follows Figure 6 As shown: it includes a casing, in which an iron core 4 and a mass block 5 are provided, the mass block 5 is sleeved outside the iron core 4, and a permanent magnet 51 is provided on the mass block 5. The two sides of the mass block 5 are connected to the inner wall of the casing through spring pieces 6, and the iron core 4 is equipped with a coil. The casing is split into a supporting plate 1, a surrounding plate 2 and a side plate 3. The iron core 4 is arranged on the supporting plate 1, and the side plates 3 are arranged on both sides of the supporting plate 1. The surrounding plate 2 includes a first folded edge 21, a connecting portion 22 and a second folded edge 23 connected in sequence, the free end of the first folded edge 21 is connected to the supporting plate 1, and the two sides of the first folded edge 21 are respectively connected to the side plates 3, and the two sides of the connecting portion 22 are respectively connected to the side plates 3, the free end of the second folded edge 23 is connected to the supporting plate 1, and the two sides of the second folded edge 23 are respectively connected to the side plates 3.

[0030] As a further arrangement of this embodiment, a first connecting platform 12 for connecting to the spring piece 6 is formed on one end of the supporting plate 1 close to the first folded edge 21, and a second connecting platform 221 for connecting to the spring piece 6 is provided on one end of the connecting portion 22 of the enclosing plate 2 close to the second folded edge 23, and a protrusion is provided on the outer wall of the connecting portion 22 of the enclosing plate 2 at a position corresponding to the second connecting platform 221.

[0031] As a further configuration of this embodiment, a snap-in groove and a snap-in protrusion 31 are respectively provided between the supporting plate 1 and the first folded edge 21, between the side plate 3 and the first folded edge 21, and between the side plate 3 and the second folded edge 23, and the snap-in groove and the snap-in protrusion 31 are snap-connected.

[0032] As a further configuration of this embodiment, a wiring platform 11 extends from one end of the carrier plate 1 close to the second folded edge 23 , and a wiring groove 231 is provided at a position of the second folded edge 23 corresponding to the wiring platform 11 .

[0033] As a further configuration of this embodiment, an abutting flange 232 is extended from the inner wall of the wiring groove 231 toward the connection platform 11 .

[0034] The above example is only one preferred specific example of the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are all included in the protection scope of the present invention.

Claims

1. A linear motor with a modular housing, comprising a housing, an iron core and a mass disposed within the housing, the mass being sheathed around the iron core, a permanent magnet disposed on the mass, two sides of the mass being connected to the inner wall of the housing via springs, and a coil mounted on the iron core, characterized in that: The casing is split into a supporting plate, a surrounding plate and a side plate, the iron core is arranged on the supporting plate, the side plates are arranged on both sides of the supporting plate, the surrounding plate includes a first folded edge, a connecting portion and a second folded edge connected in sequence, the free end of the first folded edge is connected to the supporting plate, the two sides of the first folded edge are respectively connected to the side plates, the two sides of the connecting portion are respectively connected to the side plates, the free end of the second folded edge is connected to the supporting plate, and the two sides of the second folded edge are respectively connected to the side plates.

2. The linear motor with a modular housing according to claim 1, wherein: A first connecting platform for connecting to the elastic sheet is formed on one end of the supporting plate close to the first folded edge, and a second connecting platform for connecting to the elastic sheet is provided on one end of the surrounding plate connecting portion close to the second folded edge.

3. The linear motor with a modular housing according to claim 2, wherein: A clamping groove and a clamping protrusion are respectively provided between the carrying plate and the first folding edge, between the side plate and the first folding edge, and between the side plate and the second folding edge, and the clamping groove and the clamping protrusion are clamped together.

4. The linear motor with a modular housing according to claim 3, wherein: A wiring platform is extended from one end of the carrying plate close to the second folded edge, and a wiring groove is provided at a position of the second folded edge corresponding to the wiring platform.

5. The linear motor with a modular housing according to claim 4, wherein: The inner wall of the wiring trough is provided with a conflicting flange extending toward the connection platform.

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