Conductive electrode, threading structure, linear motor and linear compressor

Abstract

The present disclosure relates to the technical field of linear compressor, and particularly relates to a conductive electrode, a wire passing structure, a linear motor and a linear compressor. The conductive electrode is fixedly attached to a plate spring and connects the plate spring and a wire. The conductive electrode comprises a fixing ring coaxially arranged with the plate spring and fixedly attached to the plate spring. A wire passing hole is formed in the plate spring along an axial direction. A projection of the fixing ring on the plate spring is located inside the wire passing hole. A fixing portion is formed on an outer circumferential surface of the fixing ring along a circumferential direction. The fixing portion is used to fixedly attach the wire to the fixing portion along an extension direction of the fixing portion after the wire passes through the wire passing hole. In use, the wire is fixed along the fixing portion on the outer circumferential surface of the fixing ring. The contact area of the wire and the conductive electrode is extended. The connection strength of the wire and the conductive electrode is improved. The service life of the plate spring and the mover is extended.

Description

Technical Field

[0001] This disclosure relates to the field of linear compressor technology, and more particularly to a conductive electrode, a wire-threading structure, a linear motor, and a linear compressor. Background Technology

[0002] Linear compressors are piston compressors that utilize linear motors. They have advantages such as compact structure, light weight, oil-free or low-lubricating oil operation, and excellent variable capacity characteristics. As a result, they are being used more and more widely and have become a major development direction for high-efficiency compressors in small refrigeration units.

[0003] A linear motor consists of a stator and a mover. The mover performs linear reciprocating motion along the axial direction. The moving-coil linear motor is a widely used structural form. The moving part of a moving-coil linear motor is an energized coil. The stator can be energized by an excitation coil or a permanent magnet, with permanent magnets being more commonly used now. During operation, the permanent magnet and the iron core form a stable radial magnetic field in the annular air gap between the inner and outer iron cores. The coil is located in the magnetic gap and generates an axial electromagnetic force when energized. When the current is alternating current, the electromagnetic force on the coil changes direction accordingly, thereby driving the piston to perform axial reciprocating motion, compressing and expanding the working gas to do work.

[0004] When a leaf spring assembly serves as a support structure, it also functions as part of the coil circuit due to its own conductivity. In the prior art, the ends of the coils are partially welded to the side of the leaf spring to electrically connect the leaf spring to the wires. However, this method causes the ends of the wires to protrude outwards from the side of the leaf spring, resulting in irregular gaps between the contact surfaces of the multi-layer leaf spring assembly fitted on the mover. This not only affects the movement of the mover and the flatness of the leaf spring installation, but also affects the operational reliability of the leaf spring. Summary of the Invention

[0005] To solve the above-mentioned technical problems, or at least partially solve them, this disclosure provides a conductive electrode, a threading structure, a linear motor, and a linear compressor.

[0006] This disclosure provides a conductive electrode that is fitted and fixed to a leaf spring and connects the leaf spring to a wire. The electrode includes a retaining ring, which is coaxially arranged with and fitted and fixed to the leaf spring. A wire-passing hole is provided on the leaf spring along the axial direction. The projection of the retaining ring on the leaf spring is located inside the wire-passing hole. A fixing part is provided on the outer circumferential surface of the retaining ring along the circumferential direction. The fixing part is used to fit and fix the wire along the extension direction of the fixing part after the wire passes through the wire-passing hole.

[0007] Optionally, the fixing part includes a groove formed by recessing from the outer circumference of the fixing ring towards the center of the fixing ring, and the wire is located in the groove and is fixed in contact with the groove wall.

[0008] Optionally, the fixing part includes two conductive arc-shaped plates arranged opposite each other, the two conductive arc-shaped plates extending along the circumference of the fixing ring, forming a receiving groove between the two conductive arc-shaped plates for accommodating the wire, and the wire being fitted and fixed to the inner wall of the conductive arc-shaped plate and / or the outer circumferential surface of the fixing ring.

[0009] Optionally, the fixing part includes a stepped surface or inclined surface formed circumferentially on the end face of the fixing ring away from the leaf spring, and the wire is fixedly attached to the stepped surface or the inclined surface circumferentially.

[0010] Optionally, the stepped inclined surface is connected between the outer circumferential surface of the fixed ring and the end face of the fixed ring away from the leaf spring.

[0011] Optionally, the cross-sectional shape of the stepped surface is "L" shaped or arc-shaped.

[0012] Optionally, a limiting groove is also provided on the outer circumferential surface of the fixing ring. The limiting groove is opened along the axial direction of the fixing ring, and the limiting groove connects the fixing part and the end face of the fixing ring that is attached to one end of the leaf spring.

[0013] Optionally, the shape of the fixing part includes an annular or arc-shaped part along the circumference of the fixing ring.

[0014] Optionally, the number of the limiting grooves can be multiple.

[0015] When the shape of the fixing part includes an annular shape along the circumference of the fixing ring, the plurality of limiting grooves are spaced apart along the circumference of the fixing ring and are all in communication with the fixing part;

[0016] When the shape of the fixing part includes an arc along the circumference of the fixing ring, the number of the fixing parts is multiple, and the number of the limiting grooves is equal to the number of the fixing parts and they are arranged in a one-to-one correspondence.

[0017] This disclosure also provides a wire-passing structure for energizing a leaf spring assembly, including a leaf spring assembly and a conductive electrode as described in any of the above claims. The leaf spring assembly includes multiple coaxially arranged leaf springs, and the fixing ring is correspondingly arranged with the inner fixing hole of the leaf spring. The leaf spring has a through hole at a position corresponding to the fixing part for the wire to pass through.

[0018] This disclosure also provides a linear motor, including the wire-threading structure described above.

[0019] This disclosure also provides a linear compressor, including the linear motor as described above.

[0020] The technical solution provided in this disclosure has the following advantages compared with the prior art:

[0021] This disclosure provides a conductive electrode that is fitted and fixed to a leaf spring and electrically connects the leaf spring to a wire. The conductive electrode includes a fixing ring, which is coaxially arranged with and fitted and fixed to the leaf spring. A wire-passing hole is axially formed on the leaf spring. The projection of the fixing ring onto the leaf spring is located inside the wire-passing hole, and a fixing portion is circumferentially formed on the outer circumferential surface of the fixing ring. The fixing portion is used to fit and fix the wire along the extension direction of the fixing portion as it passes through the wire-passing hole. In use, the wire is fixed along the fixing portion on the outer circumferential surface of the fixing ring, extending the contact area between the wire and the conductive electrode, improving the connection strength between the wire and the conductive electrode, and thus extending the service life of the leaf spring and the mover. Attached Figure Description

[0022] 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.

[0023] 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.

[0024] Figure 1 This is a side view of the conductive electrode described in some embodiments of this disclosure;

[0025] Figure 2 This is a schematic diagram of the structure of the conductive electrode described in some embodiments of this disclosure;

[0026] Figure 3 This is a schematic diagram of the structure of the conductive electrode described in some other embodiments of this disclosure.

[0027] Among them, 1 is a fixing ring; 101 is a groove; 102 is a limiting groove; and 103 is a stepped surface. Detailed Implementation

[0028] 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.

[0029] 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.

[0030] like Figures 1 to 3 As shown, this embodiment of the present disclosure provides a conductive electrode for energizing a leaf spring. The conductive electrode is fixedly attached to the leaf spring, and the leaf spring is electrically connected to a wire. The conductive electrode includes a fixing ring 1, which is coaxially arranged with and fixedly attached to the leaf spring. A wire-passing hole is formed on the leaf spring along the axial direction. The projection of the fixing ring 1 on the leaf spring is located inside the wire-passing hole, and a fixing part is formed on the outer circumferential surface of the fixing ring 1 along the circumferential direction. The fixing part is used to fix the wire along the extension direction of the fixing part after the wire passes through the wire-passing hole. The wire on the coil frame passes through the wire-passing hole on the leaf spring and is introduced into the fixing part on the fixing ring 1. Since the fixing part on the fixing ring 1 is formed on the outer circumferential surface of the fixing ring and is arranged along the circumferential direction of the fixing ring, the contact area between the wire and the fixing ring can be increased, the connection strength between the wire and the conductive electrode can be improved, and the service life of the leaf spring and the mover can be extended.

[0031] Furthermore, in combination Figure 1 and Figure 2 As shown, in some embodiments of this disclosure, the fixing part includes a groove 101 formed by recessing from the outer circumference of the fixing ring 1 towards the center of the fixing ring, and the wire is located in the groove 101 and is fixed to the groove wall of the groove 101. That is, the fixing part can be in the form of a groove formed by directly slotting the outer circumference of the fixing ring 1, and the wire extends into the groove 101 in a direction perpendicular to the groove 101.

[0032] In other embodiments of this disclosure, the fixing part includes opposing limiting plates. The two limiting plates extend circumferentially along the fixing ring 1, forming a receiving groove between them for accommodating a wire. The wire is fixed in contact with the inner wall of the limiting plate or the outer circumferential surface of the fixing ring 1. Specifically, when the wire is fixed to the inner wall of the limiting plate, the limiting plate needs to be made of a conductive material.

[0033] Furthermore, in combination Figure 3 As shown, in some other embodiments of this disclosure, the fixing part includes a stepped surface 103 or an inclined surface formed circumferentially on the end face of the fixing ring 1 away from the leaf spring, and the wire is fixed in contact with the stepped surface 103 or the inclined surface circumferentially. The purpose is also to fix the wire along the circumferential direction of the fixing ring 1 and extend the contact distance between the wire and the fixing ring 1.

[0034] Furthermore, the stepped surface 103 or the inclined surface is connected between the outer circumferential surface of the fixing ring 1 and the end face of the fixing ring away from the leaf spring. One end face of the fixing ring 1 is fixed to the leaf spring, and the stepped surface 103 or the inclined surface is provided at the connection between the other end face and the outer circumferential surface to fix the wire.

[0035] Furthermore, in some embodiments of this disclosure, the cross-section of the step surface 103 is formed in an "L" shape or an arc shape to facilitate the fixing of the wire to the step surface 103.

[0036] Furthermore, in some embodiments of this disclosure, a limiting groove 102 is provided on the outer circumferential surface of the fixing ring 1. The limiting groove 102 is opened along the axial direction of the fixing ring 1, and the limiting groove 102 connects to the end face of the fixing part that is attached to the leaf spring. That is, the limiting groove 102 is opened along the axial direction of the fixing ring 1 from the end face of the fixing ring 1 that is attached to the leaf spring, and is in a position that communicates with the fixing part. In this way, the wire passing through the wire hole of the leaf spring can first enter the limiting groove, and then enter the fixing part through the limiting groove 102 to be fixedly connected to the outer circumferential surface of the fixing ring 1. The setting of the limiting groove 102 plays a role in constraining and guiding the wire, improving the stability of the connection structure between the wire and the conductive electrode.

[0037] Furthermore, in some embodiments of this disclosure, the shape of the fixing part includes an annular or arcuate shape along the circumference of the fixing ring 1. That is, the fixing part is a closed annular or arcuate structure disposed along the circumference of the fixing ring 1.

[0038] Furthermore, in some embodiments of this disclosure, there are multiple limiting grooves 102. When the shape of the fixing part includes an annular shape that is spaced apart along the circumference of the fixing ring 1, multiple limiting grooves 102 are spaced apart along the circumference of the fixing ring 1 and are all in communication with the fixing part.

[0039] When the shape of the fixing part includes an arc along the circumference of the fixing ring 1, there are multiple fixing parts, and the number of limiting grooves 102 is equal to the number of fixing parts and they are set one-to-one. That is, each arc-shaped fixing part is provided with a limiting groove 102 arranged along the axial direction, and the wire can be fixed in any fixing part.

[0040] Furthermore, some embodiments of this disclosure also provide a wire-passing structure for energizing a leaf spring assembly, including a leaf spring assembly and a conductive electrode as described in any of the above embodiments. The leaf spring assembly includes multiple coaxially arranged leaf springs, with a retaining ring corresponding to the inner retaining hole of the leaf spring. A wire-passing hole is provided on the leaf spring at a position corresponding to the retaining part. That is, the leaf spring is sleeved on the mover through the inner retaining hole, and the retaining ring is also sleeved on the mover. The retaining ring is located on the side of the leaf spring away from the coil frame. In use, the retaining ring is fitted and fixed to the leaf spring. The wire led from the coil frame first passes through the wire-passing hole on the leaf spring and is then guided to the retaining part on the retaining ring for fixing. Since the retaining part is arranged circumferentially along the retaining ring, the connection length between the wire and the conductive electrode is longer, improving the connection strength between the wire and the conductive electrode.

[0041] Furthermore, in some embodiments of this disclosure, a linear motor is also provided, including a wire-threading structure for energizing the aforementioned leaf spring assembly.

[0042] In addition, some embodiments of this disclosure also provide a linear compressor, including the linear motor described above.

[0043] 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.

[0044] 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 conductive electrode, wherein the conductive electrode is fixedly attached to a leaf spring and the leaf spring is electrically connected to a wire, characterized in that, Includes a fixing ring (1), which is coaxially arranged with the leaf spring and is fixed to the leaf spring. The leaf spring has a wire hole along the axial direction. The projection of the fixing ring (1) on the leaf spring is located inside the wire hole. The outer circumferential surface of the fixing ring (1) has a fixing part along the circumferential direction. The fixing part is used to fix the wire along the extension direction of the fixing part after the wire passes through the wire hole. The fixing part includes a groove (101) formed by recessing from the outer circumference of the fixing ring (1) towards the center of the fixing ring (1), and the wire is located in the groove (101) and is fixed to the groove wall of the groove (101). The fixing part includes a stepped surface (103) or inclined surface formed circumferentially on the end face of the fixing ring (1) away from the leaf spring, and the wire is attached and fixed to the stepped surface (103) or the inclined surface circumferentially.

2. The conductive electrode according to claim 1, characterized in that, The fixing part includes two limiting plates arranged opposite each other. The two limiting plates extend along the circumference of the fixing ring and form a receiving groove between the two limiting plates for accommodating the wire. The wire is attached and fixed to the inner wall of the limiting plate and / or the outer circumferential surface of the fixing ring.

3. The conductive electrode according to claim 1, characterized in that, The stepped surface (103) or inclined surface is connected between the outer circumferential surface of the fixed ring (1) and the end face of the fixed ring (1) away from the leaf spring.

4. The conductive electrode according to claim 1, characterized in that, The cross-sectional shape of the stepped surface (103) is "L" shaped or arc-shaped.

5. The conductive electrode according to any one of claims 1-4, characterized in that, The outer circumferential surface of the fixing ring (1) is also provided with a limiting groove (102). The limiting groove (102) is opened along the axial direction of the fixing ring (1), and the limiting groove (102) connects the fixing part and the end face of the fixing ring (1) that is attached to one end of the leaf spring.

6. The conductive electrode according to claim 5, characterized in that, The shape of the fixing part includes an annular or arc shape along the circumference of the fixing ring (1).

7. The conductive electrode according to claim 6, characterized in that, The number of the limiting grooves (102) is multiple. When the shape of the fixing part includes an annular shape along the circumference of the fixing ring (1), a plurality of the limiting grooves (102) are spaced apart along the circumference of the fixing ring (1) and are all in communication with the fixing part; When the shape of the fixing part includes an arc along the circumferential direction of the fixing ring (1), the number of the fixing parts is multiple, and the number of the limiting grooves (102) is equal to the number of the fixing parts and they are arranged in a one-to-one correspondence.

8. A wire threading structure for energizing a leaf spring assembly, characterized in that, The assembly includes a leaf spring assembly and a conductive electrode as described in any one of claims 1-7. The leaf spring assembly includes multiple leaf springs arranged coaxially, and the fixing ring (1) is provided corresponding to the inner fixing hole of the leaf spring. The through hole is provided on the leaf spring at the position corresponding to the fixing part.

9. A linear motor, characterized in that, Includes the threading structure as described in claim 8.

10. A linear compressor, characterized in that, Includes the linear motor as described in claim 9.

Images