Mover offset amount adjusting device, linear motor, and linear compressor

Abstract

The present disclosure relates to the technical field of compressors, in particular to a mover offset adjusting device, a linear motor and a linear compressor. The mover offset adjusting device comprises a first adjusting disc and a second adjusting disc, the first adjusting disc and the second adjusting disc are sleeved on the mover, the first adjusting disc is connected with the mover through threads, the second adjusting disc is rotatably arranged between the first adjusting disc and a plate spring assembly, the second adjusting disc is not equal in thickness in the circumferential direction, one side of the second adjusting disc is arranged in close contact with the plate spring assembly, a protruding part is arranged on the end face of the end of the first adjusting disc facing the second adjusting disc, and the protruding part abuts against the side of the second adjusting disc away from the plate spring assembly when the first adjusting disc feeds in the direction close to the second adjusting disc. The adjusting device can adjust the offset of the mover by rotating the first adjusting disc and the second adjusting disc, and has simple structure and convenient operation.

Description

Technical Field

[0001] This disclosure relates to the field of compressor technology, and more particularly to a mover offset adjustment device, a linear motor, and a linear compressor. Background Technology

[0002] Linear compressors are a type of reciprocating piston compressor, and the support technology of leaf springs is a key technology in linear compressors. As an elastic component of the rotor system, the piston support structure supports the piston and electro-actuator assembly, requiring sufficient axial and radial stiffness to ensure the axial reciprocating motion of the piston. Compared to traditional cylindrical springs, leaf springs have greater radial stiffness, ensuring that the piston does not deviate from its equilibrium position due to vibration during reciprocating linear motion, thus maintaining a tight seal between the cylinder and piston, preventing leakage losses, and improving the overall efficiency and reliability of the compressor.

[0003] In linear compressors that use leaf springs as support technology, the offset between the mover assembly and the coil has a significant impact on the working state of the linear compressor. Therefore, after the linear compressor is assembled, the offset of the mover generally needs to be adjusted. Currently, the methods for adjusting the offset of the mover are relatively complex and have low adjustment accuracy. Summary of the Invention

[0004] To solve the above-mentioned technical problems, or at least partially solve them, this disclosure provides a mover offset adjustment device, a linear motor, and a linear compressor.

[0005] This disclosure provides a mover offset adjustment device, including a first adjustment disk and a second adjustment disk. The first adjustment disk and the second adjustment disk are sleeved on the mover, and the first adjustment disk is threadedly connected to the mover. The second adjustment disk is rotatably disposed between the first adjustment disk and a leaf spring assembly, and the second adjustment disk has unequal thickness along the circumferential direction. One side of the second adjustment disk is fitted with the leaf spring assembly. A protrusion is provided on the end face of the first adjustment disk facing the second adjustment disk. When the first adjustment disk is fed in a direction close to the second adjustment disk, the protrusion abuts against the side of the second adjustment disk away from the leaf spring assembly.

[0006] Optionally, the end face of the first adjusting disc facing the second adjusting disc of the leaf spring is inclined relative to the leaf spring assembly, and the protrusion is formed at the position where the distance between the first adjusting disc and the leaf spring assembly is the smallest.

[0007] Optionally, the end face of the first adjusting disc facing the second adjusting disc is parallel to the leaf spring assembly, and the protrusion includes a protrusion formed on the end face of the first adjusting disc facing the second adjusting disc.

[0008] Optionally, the protrusion may be hemispherical or arc-shaped.

[0009] Optionally, multiple sets of leaf spring assemblies are spaced apart on the moving part, and each set of leaf spring assemblies is provided with a first adjusting disc and a second adjusting disc.

[0010] Optionally, the side of the second adjusting disc facing the first adjusting disc is an inclined surface, which is used to abut against the protrusion.

[0011] Optionally, there is a gap between the second adjusting disc and the moving element.

[0012] Optionally, the second adjusting plate is provided with an annular groove, the groove being arranged with the center of the second adjusting plate as the center, and the protrusion being slidably located within the groove when the first adjusting plate presses the leaf spring assembly.

[0013] On the other hand, this disclosure also provides a linear motor including a mover offset adjustment device as described in any of the preceding claims.

[0014] In addition, this disclosure also provides a linear compressor including the linear motor described above.

[0015] The technical solution provided in this disclosure has the following advantages compared with the prior art:

[0016] This disclosure provides a mover offset adjustment device, including a first adjustment disk and a second adjustment disk. The first and second adjustment disks are sleeved on a mover, with the first adjustment disk threadedly connected to the mover. The second adjustment disk is rotatably disposed between the first adjustment disk and a leaf spring assembly, and the second adjustment disk has unequal thickness in the circumferential direction. One side of the second adjustment disk is fitted against the leaf spring assembly. A protrusion is provided on the end face of the first adjustment disk facing the second adjustment disk. When the first adjustment disk is fed in a direction close to the second adjustment disk, the protrusion abuts against the side of the second adjustment disk away from the leaf spring assembly. In use, the first adjustment disk is first rotated to a suitable position, at which point the protrusion can contact the second adjustment disk. During the rotation of the second adjustment disk, the pressure formed at the initial contact point with the protrusion is relatively small. As the second adjustment disk rotates, its thickness continuously increases, and the pressure formed on the protrusion also continuously increases. Therefore, during the rotation of the second adjustment disk, different positions of the second adjustment disk contact the protrusion, forming different degrees of pressure, thereby adjusting the magnitude of the mover offset. The adjustment device can adjust the offset of the mover by using the first adjustment plate and the second adjustment plate together. It has a simple structure and is easy to operate. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0018] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the mover offset adjustment device described in some embodiments of this disclosure;

[0020] Figure 2 This is a schematic diagram of the structure of the mover offset adjustment device described in other embodiments of this disclosure;

[0021] Figure 3 This is a schematic diagram of the structure of the mover offset adjustment device described in other embodiments of this disclosure;

[0022] Figure 4 This is a schematic diagram of the structure of the mover offset adjustment device in some embodiments of the present disclosure when using a multi-plate spring assembly.

[0023] Among them, 1. Moving element; 2. First adjusting plate; 3. Second adjusting plate; 4. Leaf spring assembly; 5. Coil frame; 101. Piston; 201. Protrusion; 401. Leaf spring; 402. Gasket. Detailed Implementation

[0024] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0025] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0026] like Figures 1 to 4As shown, this embodiment of the present disclosure provides a mover offset adjustment device, including a first adjusting disk 2 and a second adjusting disk 3. Both the first adjusting disk 2 and the second adjusting disk 3 are sleeved on a mover 1, with the first adjusting disk 2 threadedly engaged with the mover 1. The second adjusting disk 3 is disposed between a leaf spring assembly 4 and the first adjusting disk 2, with one side of the second adjusting disk 3 fitting against the leaf spring assembly 4 and capable of rotating around the mover 1. The second adjusting disk 3 has unequal thickness in the circumferential direction. A protrusion 201 is provided on the end face of the first adjusting disk 2 facing the second adjusting disk 3. The protrusion 201 abuts against the side of the second adjusting disk 3 away from the leaf spring assembly 4 when the leaf spring assembly 4 is fed in a direction close to the second adjusting disk 3. In use, the first adjusting disk 2 is rotated in a direction close to the leaf spring assembly 4. When the first adjusting disk is in a suitable position, the protrusion can contact the second adjusting disk 3. During rotation, the pressure exerted on the protrusion is relatively small at the initial contact point of the second adjusting disc 3. As the second adjusting disc 3 rotates, its thickness increases, and the pressure exerted on the protrusion also increases. Therefore, during rotation, different positions of the second adjusting disc 3 contact the protrusion, creating varying degrees of pressure, thereby adjusting the offset of the mover 1. This adjusting device, through the combined use of the first adjusting disc 2 and the second adjusting disc 3, can adjust the offset of the mover 1, featuring a simple structure and convenient operation.

[0027] It should be noted that, in some embodiments of this disclosure, the leaf spring assembly 4 includes multiple washers 402 and leaf springs 401 disposed between the washers 402. The washers 402 and leaf springs 401 are staggered, meaning that each leaf spring 401 has two washers 402 on both sides. The leaf spring assembly 4 is entirely sleeved on the mover 1. In some embodiments of this disclosure, the mover 1 can be a piston rod, with a piston 101 at one end. The piston 101 is located inside the coil frame 5, and the leaf spring assembly 4 is located outside the coil frame 5. The first adjusting plate 2 and the second adjusting plate 3 are located on the side of the leaf spring assembly 4 away from the coil frame 5.

[0028] Specifically, in some embodiments of this disclosure, the first adjusting plate 2 is provided with a threaded hole, and the mover 1 is provided with a threaded section that mates with the threaded hole. The threaded hole and the threaded section on the first adjusting plate 2 can make the first adjusting plate 2 rotate while feeding in the direction close to the leaf spring assembly 4.

[0029] Furthermore, in some embodiments of this disclosure, when the first adjusting disc 2 is fitted onto the threaded section, the end face of the first adjusting disc 2 facing the second adjusting disc 3 is inclined relative to the leaf spring assembly 4, and a protrusion 201 is formed at the position where the distance between the first adjusting disc 2 and the second adjusting disc 3 is the smallest. Specifically, the end face of the first adjusting disc 2 facing the second adjusting disc 3 is inclined, that is, it forms a certain angle with the axial direction of the mover 1. When the first adjusting disc 2 rotates and moves towards the leaf spring assembly 4, the position on the first adjusting disc 2 closest to the second adjusting disc 3 (that is, the protrusion 201) first contacts the second adjusting disc 3 and presses against the leaf spring assembly 4. Finally, the pressing force of the second adjusting disc 3 on the first adjusting disc 2 causes the mover 1 to deflect axially. By adjusting the contact position of the protrusion 201 on the first adjusting disc 2 and the second adjusting disc 3 in the circumferential direction, the deflection direction and amount of the mover 1 are adjusted.

[0030] Furthermore, such as Figure 2 As shown, the first adjusting plate 2 can be a structure with uniform thickness. The threaded hole is an oblique hole set on the first adjusting plate 2, that is, the two end faces of the first adjusting plate 2 are parallel to each other, and the axis of the threaded hole forms a certain angle with the two end faces of the first adjusting plate 2. In this way, when the first adjusting plate 2 is engaged with the threaded section on the mover 1 through the threaded hole, the end face of the first adjusting plate 2 facing the leaf spring assembly 4 is inclined relative to the leaf spring assembly 4, that is, the distance between it and the leaf spring assembly 4 is not equal. A protrusion 201 is formed at the position on the first adjusting plate 2 closest to the leaf spring assembly 4. When the first adjusting plate 2 is fed towards the leaf spring assembly 4, the protrusion 201 contacts the leaf spring assembly 4 first. Through the mutual squeezing force between it and the leaf spring assembly 4, the axial offset of the mover 1 is adjusted.

[0031] In addition, such as Figure 3 As shown, in some other embodiments of this disclosure, the first adjusting plate 2 is configured with an unequal thickness structure, wherein the end face of the first adjusting plate 2 facing the leaf spring assembly 4 is set as an inclined surface. When the threaded hole on the first adjusting plate 2 mates with the threaded section on the mover 1, the distance between the end face of the first adjusting plate 2 facing the leaf spring assembly 4 and the leaf spring assembly 4 is not equal. A protrusion 201 is formed at the position on the first adjusting plate 2 closest to the leaf spring assembly 4. When the first adjusting plate 2 is fed towards the leaf spring assembly 4, the protrusion 201 contacts the leaf spring assembly 4 first, and the axial offset of the mover 1 is adjusted by the mutual pressing force between the protrusion and the leaf spring assembly 4.

[0032] Furthermore, such as Figure 1As shown, in some other embodiments of this disclosure, the end face of the first adjusting disc 2 facing the leaf spring assembly 4 is parallel to the leaf spring assembly 4, and the protrusion 201 includes a protrusion formed on the end face of the first adjusting disc 2 facing the leaf spring assembly 4. Specifically, when the threaded hole on the first adjusting disc 2 engages with the threaded section on the mover 1, the end face of the first adjusting disc 2 facing the leaf spring assembly 4 is parallel to the leaf spring assembly 4, and a protrusion is provided on the end face of the first adjusting disc 2 facing the leaf spring assembly 4. When the first adjusting disc 2 is fed towards the leaf spring assembly 4, the protrusion first contacts the leaf spring assembly 4, and the axial offset of the mover 1 is adjusted by the mutual compression between the protrusion and the leaf spring assembly 4.

[0033] Furthermore, in some embodiments of this disclosure, the protrusion is shaped as a hemispherical or arc. By shaped as a hemispherical or arc, the protrusion avoids sharp corners or edges when it contacts and presses against the leaf spring assembly 4, thus preventing damage to the leaf spring assembly 4.

[0034] Furthermore, such as Figure 4 As shown, in some embodiments of this disclosure, multiple sets of leaf spring assemblies 4 are spaced apart on the mover 1. There are multiple first adjusting discs 2 and second adjusting discs 3, and each set of leaf spring assemblies 4 corresponds to one first adjusting disc 2 and one second adjusting disc 3. That is, each set of leaf spring assemblies 4 has one first adjusting disc 2 and one second adjusting disc 3 on its outer side. In this document, the side of the leaf spring assembly 4 facing the moving coil is defined as the inner side, and the side facing away from the moving coil is defined as the outer side. By setting multiple sets of leaf springs and multiple first adjusting discs 2 and multiple second adjusting discs 3, the position of the multiple first adjusting discs 2 and multiple second adjusting discs 3 can be adjusted in multiple offset directions of the mover 1.

[0035] Furthermore, in some embodiments of this disclosure, the side of the second adjusting disk 3 facing the first adjusting disk 2 is inclined, so that the first adjusting disk 2 has unequal thickness in the circumferential direction. This inclined surface is used to abut against the protrusion 201. Specifically, the side of the second adjusting disk 3 facing the leaf spring assembly 4 is fitted to the leaf spring assembly 4, and the light hole on the second adjusting disk 3 cooperates with the mover 1. The light hole on the second adjusting disk 3 and the mover 1 are in clearance fit to ensure that the second adjusting disk 3 can rotate around the axis of the mover 1. In use, the first adjusting disk 2 is first rotated to a suitable position. At the suitable position, the protrusion 201 can contact the second adjusting disk 3, and the second adjusting disk 3 always remains in contact with the leaf spring assembly 4 during rotation. When the first adjusting disk 2 is rotated to the suitable position, the linear distance between the protrusion 201 and the leaf spring assembly 4 is between the minimum thickness and the maximum thickness of the second adjusting disk 3. During rotation, the pressure exerted on the protrusion 201 at the initial contact point of the second adjusting disc 3 is relatively small. As the second adjusting disc 3 rotates, its thickness increases, and the pressure exerted on the protrusion 201 also increases. Therefore, during rotation, different positions of the second adjusting disc 3 contact the protrusion 201, creating varying degrees of pressure, thereby adjusting the magnitude of the offset of the mover 1.

[0036] Furthermore, in some embodiments of this disclosure, there is a gap between the second adjusting disk 3 and the moving part 1, that is, to ensure that the second adjusting disk 3 can rotate on the moving part 1.

[0037] Furthermore, the second adjusting plate 3 is provided with an annular groove, with the center of the groove and the center of the second adjusting plate 3 being circular. When the first adjusting plate 2 compresses the plate spring assembly 4, the protrusion 201 is slidably located within the groove. Since the side of the second adjusting plate 3 facing the first adjusting plate 2 is inclined, in order to ensure a good adjustment effect, the depth of the groove on the second adjusting plate 3 should be consistent at all points, so that the compressive force on the offset of the mover 1 is different when the groove is engaged with the protrusion 201 at different positions.

[0038] Furthermore, in some embodiments of this disclosure, a linear motor is also provided, which includes the mover 1 offset adjustment device in any of the above embodiments.

[0039] Furthermore, a linear compressor is also provided, including the aforementioned linear motor and piston 101.

[0040] In summary, the mover offset adjustment device provided in this embodiment of the present disclosure adjusts the offset of the mover in different directions by providing a protrusion on the first adjustment disk and an inclined surface on the second adjustment disk, and by rotating the first adjustment disk and the second adjustment disk. The structure is simple and the operation is convenient.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used merely 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mover offset adjustment device, characterized in that, The assembly includes a first adjusting plate (2) and a second adjusting plate (3). The first adjusting plate (2) and the second adjusting plate (3) are sleeved on the mover (1), and the first adjusting plate (2) is threadedly connected to the mover (1). The second adjusting plate (3) is rotatably disposed between the first adjusting plate (2) and the leaf spring assembly (4). The second adjusting plate (3) has unequal thickness along the circumferential direction. One side of the second adjusting plate (3) is fitted with the leaf spring assembly (4). The end face of the first adjusting plate (2) facing the second adjusting plate (3) has a protrusion. When the first adjusting plate (2) is fed in a direction close to the second adjusting plate (3), the protrusion abuts against the side of the second adjusting plate (3) away from the leaf spring assembly (4). The end face of the first adjusting disc (2) facing the second adjusting disc (3) is inclined relative to the leaf spring assembly (4), and the protrusion is formed at the position where the distance between the first adjusting disc (2) and the leaf spring assembly (4) is the smallest; The end face of the first adjusting disc (2) facing the second adjusting disc (3) is parallel to the leaf spring assembly (4), and the protrusion includes a protrusion formed on the end face of the first adjusting disc (2) facing the second adjusting disc (3).

2. The mover offset adjustment device according to claim 1, characterized in that, The protrusion (201) is hemispherical or arc-shaped.

3. The mover offset adjustment device according to claim 1, characterized in that, Multiple sets of leaf spring assemblies (4) are spaced apart on the moving part (1), and each set of leaf spring assemblies is provided with a first adjusting disc (2) and a second adjusting disc (3).

4. The mover offset adjustment device according to claim 1, characterized in that, The side of the second adjustment disc (3) facing the first adjustment disc (2) is an inclined surface, which is used to abut against the protrusion.

5. The mover offset adjustment device according to claim 4, characterized in that, There is a gap between the second adjusting disc (3) and the moving part (1).

6. The mover offset adjustment device according to claim 4, characterized in that, The second adjustment plate (3) is provided with an annular groove. The groove is set with the center of the second adjustment plate (3) as the center. When the first adjustment plate (2) presses the leaf spring assembly (4), the protrusion is slidably located in the groove.

7. A linear motor, characterized in that, Includes the mover offset adjustment device as described in any one of claims 1-6.

8. A linear compressor, characterized in that, Includes the linear motor as described in claim 7.

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