A novel linear motor in z direction

Abstract

The utility model belongs to linear motor technical field, concretely is a kind of Z new linear motor, including shell, the bottom side fixedly connected with tray of shell, the top of tray is provided with stator assembly, the inside of shell is provided with vibrator assembly, the utility model discloses a structure design is adopted to Z lateral placement by coil and magnetic steel, changed the assembly mode of coil and magnetic steel inside and outside nesting in traditional Z linear motor, only need to retain an air gap between magnetic steel and coil, substantially reduce the space occupied by air gap, the space saved can be used to increase the volume and mass of vibrator, significantly improve the space utilization of motor inside, thereby directly strengthen the vibration feeling of motor by the increase of vibrator mass, improve the tactile feedback experience of equipment.

Description

Technical Field

[0001] This utility model relates to the field of linear motor technology, specifically a novel Z-axis linear motor. Background Technology

[0002] Linear vibration motors are commonly used in devices such as mobile phones, tablets, massagers, game controllers, and VR devices to provide vibration functionality for haptic feedback. A key requirement for linear vibration motors is strong vibration feedback, and a parameter related to this is maximizing the mass of the oscillator. This can be achieved by using high-density tungsten materials to make the oscillator. Another method is to maximize the use of motor space to increase the oscillator volume and achieve greater mass, thereby enhancing the vibration feedback.

[0003] In existing Z-axis linear motors, the magnet moves up and down along the Z-axis when the motor is working. The magnet is embedded in the coil (or the coil is embedded in the magnet) to ensure the movement space of the oscillator. Sufficient air gaps need to be reserved between the inner side of the coil and the magnet, and air gaps also need to be reserved between the outer side of the coil and the inner side of the magnetic plate. That is, there are air gaps on both the inner and outer sides of the coil. This design results in a large amount of space being occupied by air gaps, which limits the increase in the volume of the oscillator and makes the mass of the oscillator smaller, ultimately affecting the vibration effect of the motor. To address this, we propose a new type of Z-axis linear motor. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a novel Z-axis linear motor. By adopting a Z-axis lateral placement structure for the coil and magnet, it changes the traditional assembly method of nesting the coil and magnet inside and outside the coil in Z-axis linear motors. This allows only an air gap to be maintained between the magnet and the coil, significantly reducing the space occupied by the air gap and solving the problems mentioned earlier.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A novel Z-axis linear motor includes a housing, a support plate fixedly connected to the bottom side of the housing, a stator assembly disposed on the top of the support plate, and an oscillator assembly disposed inside the housing; the stator assembly includes a mounting bracket fixedly connected to the top side of the support plate, a placement groove extending through the center of the bottom side of the mounting bracket, a circuit board disposed inside the placement groove, and mounting grooves extending through the left and right sides of the mounting bracket, each set of mounting grooves housing a coil; the oscillator assembly includes a mass block disposed between the left and right sides of the mounting bracket, grooves extending through the left and right sides of the mass block, magnets fixedly connected inside each set of grooves, and spring plates fixedly connected to the left and right sides of the bottom of the mass block, the bottom ends of each set of spring plates fixedly connected to the bottom of the mounting bracket.

[0006] Preferably, gaskets are fixedly connected to the top four corners and the bottom four corners of the mass block.

[0007] Preferably, the bottom side of the tray has a fitting groove.

[0008] Preferably, thermally conductive silicone is filled between the outer peripheral wall of the coil and the inner wall of the mounting groove, and the lead end of the coil is electrically connected to the circuit board.

[0009] Preferably, the interior of the bonding groove is provided with an adhesive layer, and the thickness of the adhesive layer is equal to the depth of the bonding groove.

[0010] Preferably, the spring sheet is made of beryllium bronze.

[0011] This invention provides a novel Z-axis linear motor. Compared with the prior art, it has the following advantages: 1. This new type of Z-axis linear motor, by adopting a Z-axis side-mounted structure design for the coil and magnet, changes the assembly method of the coil and magnet being nested inside and outside in the traditional Z-axis linear motor. This allows only an air gap to be maintained between the magnet and the coil, greatly reducing the space occupied by the air gap. The space saved can be used to increase the volume and mass of the oscillator, significantly improving the space utilization rate inside the motor. Thus, the increase in the mass of the oscillator directly enhances the vibration of the motor and improves the tactile feedback experience of the equipment. Attached Figure Description

[0012] Figure 1 This is a front view structural diagram of the main body of this utility model; Figure 2 This is a schematic diagram of the main body of the present invention with the shell removed from its front view. Figure 3 This is a schematic diagram of the main body disassembled structure of this utility model; Figure 4 This is a schematic diagram of the main body disassembled structure of this utility model from another perspective; Figure 5 This is a schematic diagram of the spring sheet structure of this utility model; Figure 6 This is a schematic diagram of the placement groove structure of this utility model.

[0013] In the diagram: 1. Housing; 2. Circuit board; 3. Support plate; 4. Mounting bracket; 5. Mass block; 6. Magnet; 7. Groove; 8. Coil; 9. Mounting slot; 10. Placement slot; 11. Spring plate; 12. Gasket; 13. Fitting slot. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-6 This utility model provides a technical solution: a novel Z-axis linear motor, including a housing 1, a support plate 3 fixedly connected to the bottom side of the housing 1, a stator assembly provided on the top of the support plate 3, and an oscillator assembly provided inside the housing 1. The stator assembly includes a mounting bracket 4, which is fixedly connected to the top side of the support plate 3. A placement groove 10 is provided through the middle of the bottom side of the mounting bracket 4. A circuit board 2 is provided inside the placement groove 10. Mounting grooves 9 are provided through the left and right sides of the mounting bracket 4. A coil 8 is installed inside both sets of mounting grooves 9. The oscillator assembly includes a mass block 5, which is disposed between the left and right sides of the mounting frame 4. Grooves 7 are provided on both the left and right sides of the mass block 5. Magnets 6 are fixedly connected inside the two sets of grooves 7. Spring plates 11 are fixedly connected to the left and right sides of the bottom of the mass block 5. The bottom ends of the two sets of spring plates 11 are fixedly connected to the bottom of the mounting frame 4.

[0016] When the new Z-axis linear motor is working, the mounting bracket 4 is fixed to the bottom side of the housing 1 by the support plate 3. The bottom slot 10 of the mounting bracket 4 is equipped with a circuit board 2. After the circuit board 2 is powered on, the coil 8 electrically connected to the circuit board 2 will generate an electromagnetic field. At this time, the magnets 6 in the grooves 7 on the left and right sides of the mass block 5 are in the electromagnetic field generated by the coil 8. According to the principle of electromagnetic induction, the magnets 6 will be subjected to the force of the electromagnetic field. Since the spring plates 11 on the left and right sides of the bottom of the mass block 5 are connected to the bottom of the mounting bracket 4, the spring plates 11 constrain the movement of the mass block 5, so that the mass block 5 can only move in the Z direction (up and down direction). Therefore, under the combined action of the electromagnetic field force and the elastic force of the spring plates 11, the magnets 6 drive the mass block 5 to make reciprocating simple harmonic motion in the Z direction, thereby realizing the vibration function of the motor.

[0017] Gaskets 12 are fixedly connected to the top four corners and bottom four corners of the mass block 5. When the linear motor is working, the mass block 5 vibrates along the Z direction. The gaskets 12 can prevent its top and bottom from directly colliding with other components, reduce wear and noise, and ensure vibration stability.

[0018] The bottom side of the tray 3 is provided with a fitting groove 13, which provides positioning for motor installation and ensures accurate installation position.

[0019] Thermally conductive silicone is filled between the outer peripheral wall of coil 8 and the inner wall of mounting groove 9. The lead end of coil 8 is electrically connected to circuit board 2. After circuit board 2 is powered on, current flows into coil 8 through lead end to generate electromagnetic field, which interacts with magnet 6 to drive vibration. Thermally conductive silicone timely dissipates the heat generated by coil 8 during operation to avoid overheating, and at the same time fixes coil 8 to prevent loosening.

[0020] An adhesive layer is provided inside the bonding groove 13, and the thickness of the adhesive layer is equal to the depth of the bonding groove 13. The adhesive layer firmly bonds the tray 3 to the external equipment. The matching thickness ensures flat installation, enhances connection strength, prevents loosening when the motor vibrates, and ensures long-term stable operation.

[0021] The spring plate 11 is made of beryllium bronze, which has good elasticity and toughness. Under the action of the electromagnetic field and the magnet 6, the spring plate 11 undergoes elastic deformation, constraining the mass block 5 to perform reciprocating simple harmonic motion along the Z direction, and is fatigue resistant to ensure long-term stable vibration.

[0022] Working principle: When the new Z-axis linear motor is working, the mounting bracket 4 is fixed to the bottom side of the housing 1 by the support plate 3. After the circuit board 2 in the slot 10 at the bottom of the mounting bracket 4 is energized, the coil 8 electrically connected to the circuit board 2 generates a magnetic field. At this time, the permanent magnetic field of the magnet 6 in the groove 7 on the left and right sides of the mass block 5 interacts with the magnetic field generated by the coil 8, which will generate force components in both the X and Z directions. Since the spring plates 11 on the left and right sides of the bottom of the mass block 5 are connected to the bottom of the mounting bracket 4, the spring plates 11 constrain the movement of the mass block 5, so that the mass block 5 can only move in the Z direction (up and down direction). Therefore, under the combined action of the force generated by the interaction of the magnetic field and the elastic force of the spring plates 11, the magnet 6 drives the mass block 5 to perform reciprocating simple harmonic motion in the Z direction, thereby realizing the vibration function of the motor.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A new linear motor in Z direction comprising a housing (1), characterized in that: A support plate (3) is fixedly connected to the bottom side of the housing (1), a stator assembly is provided on the top of the support plate (3), and an oscillator assembly is provided inside the housing (1). The stator assembly includes a mounting bracket (4), which is fixedly connected to the top side of the support plate (3). A placement groove (10) is provided through the middle of the bottom side of the mounting bracket (4). A circuit board (2) is provided inside the placement groove (10). A mounting groove (9) is provided through the left and right sides of the mounting bracket (4). A coil (8) is installed inside both sets of mounting grooves (9). The oscillator assembly includes a mass block (5), which is disposed between the left and right sides of the mounting frame (4). The left and right sides of the mass block (5) are provided with grooves (7). Magnets (6) are fixedly connected inside the two sets of grooves (7). Spring plates (11) are fixedly connected to the left and right sides of the bottom of the mass block (5). The bottom ends of the two sets of spring plates (11) are fixedly connected to the bottom of the mounting frame (4).

2. A novel linear motor in Z-direction as claimed in claim 1 characterized in that: Gaskets (12) are fixedly connected to the top four corners and the bottom four corners of the mass block (5).

3. A novel linear motor in Z-direction as claimed in claim 1 characterized in that: The bottom side of the tray (3) is provided with a fitting groove (13).

4. A novel linear motor in Z-direction as claimed in claim 1, wherein: Thermally conductive silicone is filled between the outer peripheral wall of the coil (8) and the inner wall of the mounting groove (9), and the lead end of the coil (8) is electrically connected to the circuit board (2).

5. A novel linear motor in Z-direction as claimed in claim 3, wherein: An adhesive layer is provided inside the bonding groove (13), and the thickness of the adhesive layer is equal to the depth of the bonding groove (13).

6. A novel linear motor in Z-direction as claimed in claim 1 characterized in that: The spring sheet (11) is made of beryllium bronze.

Images