Moving contact components and relays

Abstract

This application relates to a moving contact assembly and a relay. The moving contact assembly includes a receiving member and a single spindle, the spindle protruding from the receiving member; a pressure spring and a moving spring, the pressure spring being stacked between the receiving member and the moving spring along the axial direction of the spindle, the pressure spring being configured to provide a force to the moving spring away from the receiving member, and the moving spring having a first mounting through hole through which the spindle passes, the first mounting through hole having at least one straight edge; and the pressure spring having a limiting portion, the limiting portion having a clearance fit with the outer peripheral surface of the moving spring, and the limiting portion being adapted to abut against the outer peripheral surface of the moving spring to limit the circumferential rotation of the moving spring around the spindle. Thus, the moving contact assembly according to this application, through its single-axis single-hole structure and double anti-rotation design, significantly improves mechanical strength and durability, and effectively suppresses debris generation.

Description

Technical Field

[0001] This application relates to the field of relay technology, and in particular to moving contact components and relays. Background Technology

[0002] Moving contact components are widely used in medium-to-large capacity or high-reliability relays due to their ability to provide more reliable electrical contact and greater current carrying capacity. However, the large number of parts and complex assembly relationships in this structure pose a serious challenge to the long-term mechanical and electrical reliability of the relays, especially under conditions of frequent switching or vibration and shock.

[0003] In related technologies, under frequent impacts of high speed and high intensity, the moving spring is prone to fatigue fracture, which in turn leads to relay failure. Summary of the Invention

[0004] Therefore, it is necessary to provide a dynamic contact component to address the above-mentioned problems.

[0005] A dynamic contact component, comprising:

[0006] A receiving component and a single mandrel, the mandrel protruding from the receiving component;

[0007] A compression spring and a moving spring are arranged along the axial direction of the mandrel. The compression spring is stacked between the receiving member and the moving spring. The compression spring is configured to provide a force to the moving spring that moves away from the receiving member. The moving spring has a first mounting through hole through which the mandrel passes. The first mounting through hole has at least one straight edge.

[0008] The compression spring is provided with a limiting part, which is adapted to abut against the outer peripheral surface of the moving spring to limit the circumferential rotation of the moving spring around the spindle.

[0009] The aforementioned moving contact assembly, by employing a mating structure of a single spindle and a first mounting through hole on the moving spring with at least one straight edge, not only achieves axially stable guidance of the moving spring and prevents its rotation around the axis, but also significantly improves the mechanical strength and fatigue resistance of the moving spring, avoiding the stress concentration and assembly accuracy problems caused by multi-hole and multi-axis structures. Furthermore, by setting a limiting part on the pressure spring and a clearance fit with the outer peripheral surface of the moving spring, a double limiting mechanism is formed to prevent the rotation of the moving spring, effectively suppressing contact skew and ensuring electrical contact reliability, thereby enhancing the overall operational reliability and durability of the moving contact assembly under high-speed, high-load, and vibration conditions.

[0010] In one embodiment, the limiting part is clearance-fitted with the outer peripheral surface of the movable spring.

[0011] The aforementioned moving contact assembly, by setting a clearance fit between the limiting part and the outer peripheral surface of the moving spring, not only avoids continuous sliding friction between the moving spring and the limiting part during normal axial movement to a certain extent, but also ensures that when the moving spring undergoes an unexpected slight deflection, the limiting part can quickly intervene to limit its deflection angle.

[0012] In one embodiment, the surface of the limiting portion facing the movable spring is constructed as a curved surface.

[0013] The aforementioned moving contact assembly utilizes a curved surface structure in the limiting part to contact the moving spring, thereby changing the contact form between the limiting part and the moving spring from "point-to-surface contact" or "line-to-surface contact" to effectively reduce the actual contact area between the limiting part and the moving spring.

[0014] In one embodiment, in the first direction, at least two limiting portions are provided on the same side of the compression spring, and the two limiting portions are respectively located on both sides of the mandrel in the second direction;

[0015] The first direction, the second direction, and the axis of the mandrel are set perpendicular to each other.

[0016] The aforementioned dynamic contact assembly, by providing at least two limiting parts on each side of the compression spring, achieves multi-point, symmetrical, and omnidirectional constraint on the rotational degree of freedom of the dynamic spring.

[0017] In one embodiment, the area of ​​the moving spring that contacts the pressing spring has a clearance structure.

[0018] The aforementioned moving contact assembly reduces the actual contact area between the moving spring and the compression spring by incorporating a clearance structure in the contact region. This smaller contact area also makes the contact interface more stable, reducing the "scratching" effect that might occur with large-area contact.

[0019] In one embodiment, the compression spring includes a spring body and a limiting portion;

[0020] The reed body includes: an assembly part and two deformable parts, the two deformable parts being connected to both ends of the assembly part respectively, and a limiting part disposed on the deformable parts; wherein,

[0021] In the extending direction of the deformable part, a bending area is provided at the end of the deformable part away from the assembly part, and the curved surface of the bending area abuts and contacts the moving spring.

[0022] The aforementioned moving contact assembly features a spring body designed with an assembly section and two deformation sections, and a bent surface at the end of the deformation section that abuts against the moving spring. This structure not only fulfills the basic function of the spring providing elastic restoring force, but also reduces the contact area and friction by designing the contact area between the spring and the moving spring as a curved surface, thereby further improving the overall sensitivity, reliability, and service life of the moving contact assembly.

[0023] In one embodiment, the reed body and the limiting part are integrally formed.

[0024] The aforementioned dynamic contact assembly is integrally formed by the spring body and the limiting part (i.e., the spring is integrally formed), which eliminates the need for the limiting part to be assembled as an independent part, simplifies the production process, and improves production efficiency and consistency.

[0025] In one embodiment, the assembly part is provided with a second assembly through hole, the second assembly through hole having at least one straight edge;

[0026] The mandrel passes through the second assembly through hole to connect with the receiving part.

[0027] The aforementioned moving contact assembly, by providing a second mounting through hole with at least one straight edge in the mounting part of the pressure spring, achieves the effect of preventing the pressure spring from rotating relative to the spindle, ensuring the effectiveness of the pressure spring's limiting function and the accuracy of the elastic action direction. This is an important guarantee for enhancing the long-term operational reliability of the moving contact assembly under high-speed, high-frequency, and vibration conditions.

[0028] In one embodiment, the receiving member is provided with a third assembly through hole, the third assembly through hole having at least one straight edge;

[0029] The mandrel passes through the third assembly through hole to be riveted to the receiving part.

[0030] The aforementioned moving contact assembly, by providing a third mounting through hole with at least one straight edge on the receiving part, and then riveting the spindle through it, achieves complete axial and circumferential fastening of the spindle 2 on the receiving part. This eliminates the risk of spindle rotation, thereby further ensuring the positional accuracy and contact reliability of the moving spring and its contacts under long-term dynamic operation, and improving the overall performance and service life of the relay.

[0031] In one embodiment, the first assembly through-hole is configured as an oblong hole.

[0032] The diameter of the first assembly through hole in the first direction is R1, and the diameter of the first assembly through hole in the second direction is R2, satisfying the relationship: R1 < R2.

[0033] The first direction, the second direction, and the axial direction of the mandrel are perpendicular to each other.

[0034] For the above-mentioned moving contact component, by specifically constructing the first assembly through-hole as an oval hole satisfying the relationship of "R1 < R2", the moving reed obtains a larger effective bearing area in its width direction, thus significantly enhancing its mechanical properties of impact resistance and fatigue resistance; at the same time, the larger aperture in the length direction of the moving reed ensures good guiding and fitting stability between the moving reed and the mandrel. In one embodiment, in the first direction, a single positioning notch is provided on one side of the moving reed, and the positioning notch is located on one side of the first assembly through-hole in the second direction. The positioning notch is used for positioning and mating with the positioning protrusion of the riveting tool.

[0035] The first direction, the second direction, and the axial direction of the mandrel are perpendicular to each other.

[0036] For the above-mentioned moving contact component, a single positioning notch is provided on one side of the moving reed in the first direction and is located on one side of the first assembly through-hole in the second direction. The positioning notch cooperates with the positioning protrusion of the riveting tool, ensuring that the moving reed can be placed in the correct direction (i.e., the contact setting surface faces the side of the assembler) when riveting the contact head 41. This design structure is simple, anti-misassembly is reliable, effectively avoiding batch assembly errors and product scrapping caused by the reverse installation of the moving reed, and significantly improving the production assembly efficiency, the first-pass rate of products, and the quality consistency.

[0037] The present application further proposes a relay, which includes the moving contact component in some of the above embodiments.

[0038] In one embodiment, the relay includes:

[0039] A housing;

[0040] A magnetic motion mechanism, which includes a magnetic path carrier and a magnetic mover. The magnetic path carrier is fixed to the housing, and the magnetic mover is arranged on the magnetic path carrier. The magnetic mover is configured to move relative to the magnetic path carrier along a linear motion direction.

[0041] At least one moving contact component, which is arranged on the magnetic mover;

[0042] At least one static contact component, which is arranged on the housing. In the linear motion direction, the corresponding static contact component and the moving contact component are arranged opposite to each other. Description of the Drawings

[0043] Figure 1 It is a schematic structural diagram of a moving contact component according to an embodiment of the present application from a first perspective.

[0044] Figure 2This is a structural schematic diagram of a dynamic contact assembly according to an embodiment of this application from a second perspective.

[0045] Figure 3 This is a structural schematic diagram of a dynamic contact assembly according to an embodiment of this application from a third-person perspective.

[0046] Figure 4 This is a schematic diagram of the main structure of the moving spring of the moving contact assembly according to an embodiment of this application (the contact is not shown).

[0047] Figure 5 This is a schematic diagram of the structure of a relay implemented according to this application.

[0048] Figure label:

[0049] 100. Moving contact assembly; 1. Receiving part; 2. Spindle; 3. Compression spring; 31. Spring body; 311. Assembly part; 312. Deformation part; 3120. Bending area; 32. Limiting part; 4. Moving spring; 40. First assembly through hole; 401. Avoidance structure; 402. Positioning notch; 41. Contact; 1000. Relay. Detailed Implementation

[0050] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0051] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0052] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0054] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0055] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0056] See Figures 1 to 4As shown, the moving contact assembly 100 according to this application includes a receiving member 1, a spindle 2, a pressure spring 3, and a moving spring 4, wherein the number of spindles 2 is configured as a single one. The spindle 2 is fixedly disposed on the receiving member 1, and the axis of the spindle 2 is parallel to the thickness direction (i.e., the X-direction) of the receiving member 1, such that the spindle 2 protrudes from one side of the receiving member 1 in the thickness direction. In the axial direction (i.e., the X-direction) of the spindle 2, the pressure spring 3 is stacked between the receiving member 1 and the moving spring 4, and the pressure spring 3 is configured to provide a force to the moving spring 4 that moves away from the receiving member 1.

[0057] It is important to understand that the compression spring 3 is riveted and fixed to the receiving part 1, so the compression spring 3 as a whole is relatively stationary with respect to the receiving part 1 (i.e., the compression spring 3 is fixed to the receiving part 1). The movable spring 4 is a moving part. The first mounting through hole 40 of the movable spring 4 is clearance-fitted with the spindle 2, allowing the movable spring 4 to move relative to the compression spring 3 along the axial direction (i.e., the X direction) of the spindle 2.

[0058] When the movable spring 4 is subjected to a force along the axial direction (i.e., the X-direction) of the spindle 2 towards the receiving member 1, the movable spring 4 is guided and engaged with the spindle 2 and moves towards the receiving member 1, so that the movable spring 4 compresses the compression spring 3. During this process, the compression spring 3 is subjected to the axial compressive force transmitted by the movable spring 4, and it undergoes elastic deformation, storing elastic potential energy. When the external force acting on the movable spring 4 is removed, the compression spring 3 releases the stored elastic potential energy, generating a reverse restoring force. This restoring force pushes the movable spring 4 to move away from the receiving member 1 along the axial direction of the spindle 2 until the compression spring 3 returns to its original shape, and the movable spring 4 also returns to its initial position.

[0059] The movable spring 4 is provided with a first mounting through hole 40 for the mandrel 2 to pass through. When the movable spring 4 is mounted on the mandrel 2, it allows the movable spring 4 to move relative to the mandrel 2 along its axial direction. The first mounting through hole 40 has at least one straight edge; for example, the hole shape of the first mounting through hole 40 can be a waist-shaped hole, a "D"-shaped hole, a rectangular hole, or a diamond-shaped hole. Correspondingly, the mandrel 2 is constructed as a guide post structure that matches the first mounting through hole 40, and its cross-sectional shape is adapted to the inner contour of the first mounting through hole 40. This not only ensures that the movable spring 4 maintains a stable guiding relationship when moving along the axial direction of the mandrel 2, but also restricts the movable spring 4 from rotating around the axis of the mandrel 2.

[0060] Furthermore, it should be noted that this application uses only a single spindle 2, therefore, only one matching first mounting through hole 40 is required in the moving spring 4. This arrangement has significant advantages: compared to setting multiple mounting through holes on the moving spring 4, a single through hole can better maintain the mechanical strength of the moving spring 4 itself. If multiple through holes are set, the structural integrity of the moving spring 4 will be weakened. Under the frequent operation of the relay at high speed and high intensity, stress is easily concentrated at the edge of the through hole, causing the moving spring 4 to be prone to fatigue fracture. In addition, the multi-through hole structure requires multiple spindles 2, which requires extremely high assembly precision; even a slight deviation may introduce internal stress, thereby affecting the contact state and reliability of the contacts 41 set on the moving spring 4. Therefore, the single spindle 2 and single first mounting through hole 40 matching structure of this application, while ensuring the guiding function, improves the mechanical durability and assembly stability of the moving spring 4 (preventing the moving spring 4 from rotating around the axis of the spindle 2).

[0061] Furthermore, the pressure spring 3 is provided with a limiting part 32, which is adapted to abut against the outer peripheral surface of the moving spring 4 to limit the axial rotation of the moving spring 4 around the spindle 2. It should be understood that if the moving spring 4 rotates axially around the spindle 2 during long-term dynamic operation of the relay, the contact 41 (specifically located on the moving spring 4) in the moving contact assembly 100 will become misaligned. This will prevent the contact 41 in the moving contact assembly 100 from accurately contacting the contact 41 in the static contact assembly of the relay, leading to unstable contact resistance, affecting electrical performance, and in severe cases, arcing due to reduced contact area, burning out the contact 41. Therefore, according to the moving contact assembly 100 of this application, the limiting part 32 abuts against the outer peripheral surface of the moving spring 4, and the spindle 2 cooperates with the first mounting through hole 40 to achieve double limiting of the moving spring 4, thereby more effectively preventing the axial rotation of the moving spring 4 around the spindle 2.

[0062] In summary, the moving contact assembly 100 of this application, by employing a mating structure of a single spindle 2 and a single first mounting through hole 40 on the moving spring 4 having at least one straight edge, not only achieves axially stable guidance of the moving spring 4 and prevents it from rotating around the axis, but also significantly improves the mechanical strength and fatigue resistance of the moving spring 4, avoiding the stress concentration and assembly accuracy problems caused by multi-hole and multi-axis structures; and by setting a limiting part 32 on the pressure spring 3 to limit the outer peripheral surface of the moving spring 4, a double limiting mechanism is formed to prevent the moving spring 4 from rotating. Under the premise of effectively suppressing the skewness of the contact 41 and ensuring the reliability of electrical contact, the risk of short circuit or jamming caused by debris generated by continuous friction is reduced, thereby enhancing the overall operational reliability and durability of the moving contact assembly 100 under high-speed, high-load and vibration conditions.

[0063] See Figure 2 and Figure 3As shown, in some embodiments of this application, the limiting part 32 and the outer peripheral surface of the movable spring 4 are in a clearance fit state to avoid the limiting part 32 and the movable spring 4 being in constant contact. This prevents the limiting part 32 and the movable spring 4 from rubbing against each other during the axial movement of the movable spring 4 along the spindle 2, thereby avoiding debris (such as metal or plastic debris) generated by friction to a certain extent. It should be understood that in a relay, if these debris generated by friction are scattered between the contacts 41 or in the air gap of the magnetic circuit, it will cause fatal malfunctions such as short circuit, jamming, or malfunction of the relay. A small gap is reserved between the limiting part 32 and the outer peripheral surface of the movable spring 4. When the movable spring 4 rotates at a small angle around the axial direction of the spindle 2, the limiting part 32 can restrict the movable spring 4 from rotating further. Therefore, by setting the limit part 32 and the outer peripheral surface of the moving spring 4 to a clearance fit, it not only avoids continuous sliding friction between the moving spring 4 and the limit part 32 during normal axial movement, but also ensures that when the moving spring 4 undergoes an unexpected slight deflection, the limit part 32 can quickly intervene to limit its deflection angle.

[0064] In some embodiments of this application, the surface of the limiting part 32 facing the movable spring 4 is constructed as a curved surface. The curved surface structure can be a circular arc surface, an elliptical arc surface, or other smoothly transitioned curved surface shapes. By utilizing the curved surface structure in the limiting part 32 to contact the movable spring 4, the contact form between the limiting part 32 and the movable spring 4 is changed from "point-to-surface contact" or "line-to-surface contact", effectively reducing the actual contact area between the limiting part 32 and the movable spring 4.

[0065] Exemplary examples, in some embodiments of this application, the surface of the limiting portion 32 facing the movable spring 4 is constructed as a curved surface, and this curved surface contacts and engages with the outer peripheral surface of the movable spring 4 (for example, the curved surface is in contact with the outer peripheral surface of the movable spring 4 under normal conditions). In this configuration, the curved surface structure of the limiting portion 32 forms a continuous abutment relationship with the outer peripheral surface of the movable spring 4. Since the limiting portion 32 adopts a circular arc surface, an elliptical arc surface, or other smoothly transitioned curved surface shape, its contact form with the outer peripheral surface of the movable spring 4 is optimized to "point contact" or "line contact". This contact form significantly reduces the actual contact area between the limiting portion 32 and the movable spring 4, thereby providing a limiting torque immediately when the movable spring 4 has a slight tendency to rotate around the axis of the spindle 2, achieving instantaneous limiting with zero clearance. Meanwhile, thanks to the smooth characteristics of the curved surface structure, even when they are in contact under normal conditions, the frictional resistance during relative movement remains at a low level, effectively avoiding wear aggravation or jamming caused by large-area friction, and ensuring the guiding stability of the moving spring 4 and the centering accuracy of the contact 41 under long-term high-frequency operation.

[0066] Alternatively, in some embodiments of this application, the surface of the limiting part 32 facing the movable spring 4 is curved, and this curved surface is clearance-fitted with the outer peripheral surface of the movable spring 4 (for example, the curved surface is spaced apart from the outer peripheral surface of the movable spring 4 under normal conditions). In this configuration, a small preset gap is reserved between the curved surface of the limiting part 32 and the outer peripheral surface of the movable spring 4. During the normal reciprocating motion of the movable spring 4 along the axial direction of the spindle 2, since there is no continuous physical contact, the sliding friction between the limiting part 32 and the movable spring 4 is completely eliminated, fundamentally eliminating the risk of metal or plastic debris generated by friction, and avoiding fatal failures such as short circuits and jamming caused by debris falling into the contacts 41 or the air gap of the magnetic circuit. However, when the movable spring 4 rotates unexpectedly around the axis due to external vibration or uneven force, and the rotation angle reaches the threshold of the preset gap, the curved surface structure of the limiting part 32 can quickly abut against the outer peripheral surface of the movable spring 4. At this point, the limiting part 32 provides effective limiting and blocking with minimal contact area, preventing the moving spring 4 from deflecting further. This design ensures both frictionless and smooth operation of the moving spring 4 under normal working conditions and provides reliable safety redundancy to prevent the contact 41 from skewing, thus balancing the dual requirements of low wear and high reliability.

[0067] See Figure 2 and Figure 3 As shown, in some embodiments of this application, the compression spring 3 is provided with at least two limiting portions 32 on the same side in the first direction (i.e., the Z direction, the height direction of the moving contact assembly 100), and the two limiting portions 32 are respectively arranged on both sides of the mandrel 2 in the second direction (i.e., the Y direction, the length direction of the moving contact assembly 100). Specifically, the first direction is the height direction (up-down direction) of the moving contact assembly 100, and the second direction is the length direction (left-right direction) of the moving contact assembly 100. The first direction and the second direction are perpendicular to each other, and are also perpendicular to the axis of the mandrel 2 (i.e., the X direction). By distributing the two limiting portions 32 on both sides of the mandrel 2 in the second direction (i.e., the Y direction), a symmetrical or balanced limiting structure can be formed in the spatial layout, thereby more effectively restraining the possible rotational tendency of the moving spring 4 around the axis of the mandrel 2.

[0068] Furthermore, the limiting part 32 can be provided on the upper side and / or the lower side of the compression spring 3. In other words, the limiting part 32 can be located only on the upper side of the compression spring 3, or only on its lower side; alternatively, corresponding limiting parts 32 can be provided on both the upper and lower sides of the compression spring 3 to achieve coordinated limiting on both sides. When the limiting part 32 is provided on both the upper and lower sides of the compression spring 3, a more comprehensive rotation suppression effect can be applied to the moving spring 4 from different height positions, which is especially suitable for applications subjected to complex vibration loads or with multi-directional disturbance torques, significantly improving the attitude stability of the moving spring 4 during movement.

[0069] Furthermore, at least two limiting portions 32 are provided on each side (i.e., the upper or lower side) of the compression spring 3, and these two limiting portions 32 are located on the left and right sides of the spindle 2 respectively in the second direction (i.e., the Y direction). This arrangement ensures that the two limiting portions 32 on each side are straddling the spindle 2, so that when the moving spring 4 undergoes a slight deflection, regardless of its rotation direction, one of the limiting portions 32 can quickly contact the outer peripheral surface of the moving spring 4 and act as a stop. This dual-sided limiting design effectively expands the limiting response range, improves the sensitivity and reliability of the limiting action, and avoids response lag or limiting failure caused by single-point limiting.

[0070] It is important to understand that during frequent switching of the relay, the moving spring 4 continuously reciprocates at high speed. If it experiences slight torsion or angular displacement during this movement, it may cause a positional deviation of the contact 41 at its end, thus affecting the alignment with the stationary contact 41 and the consistency of contact pressure. Especially under high-frequency, high-current, or external vibration environments, such displacement is more likely to accumulate and cause faults such as poor contact, arcing, or even welding of the contact 41. Therefore, by providing two limiting parts 32 distributed on both sides of the spindle 2 in the second direction (i.e., the Y direction) on the same side of the pressure spring 3, a spatially covering limiting area is formed. This provides a reverse constraint torque when the moving spring 4 generates an initial rotational tendency, thereby controlling its deflection angle within the allowable range.

[0071] It is worth emphasizing that although the limiting part 32 and the outer peripheral surface of the moving spring 4 maintain a clearance fit, meaning that no direct contact occurs during the normal axial movement (X-direction) of the moving spring 4, the limiting parts 32 located on both sides of the spindle 2 can promptly intervene and abut against the outer peripheral surface of the moving spring 4 when it undergoes an unexpected slight rotation around the axis, achieving a rapid limiting response. This clearance fit design avoids wear and debris generation caused by continuous friction during normal operation, while ensuring reliable intervention capability in abnormal deflection situations. In particular, when such limiting parts 32 arranged across the spindle 2 are provided on both the upper and lower sides, the torsional stiffness of the overall structure can be further enhanced, ensuring that the moving spring 4 maintains good linear guiding characteristics and posture consistency throughout its entire working stroke.

[0072] In summary, according to the dynamic contact assembly 100 of this application, by providing at least two limiting portions 32 on each side of the compression spring 3 and respectively placed on both sides of the spindle 2 in the length direction (Y direction), and optionally configuring such limiting structures on both the upper and lower sides of the compression spring 3, multi-point, symmetrical, and omnidirectional constraints on the rotational degree of freedom of the dynamic spring 4 are achieved.

[0073] See Figure 3As shown, in some embodiments of this application, the area where the movable spring 4 contacts the pressure spring 3 has a clearance structure 401 to reduce the "contact surface" area where the movable spring 4 and the pressure spring 3 actually make contact.

[0074] For example, with Figure 1 As shown from a medium angle, the compression spring 3 is in the shape of a "V". The compression spring 3 has two abutment areas (i.e., the bending area 3120 mentioned below) on both sides of its length direction (i.e., the Y direction). The moving spring 4 also has two corresponding contact areas on both sides of its length direction (i.e., the Y direction).

[0075] By providing a clearance structure 401 in the contact area, the actual contact area between the moving spring 4 and the pressure spring 3 is reduced. A smaller contact area also makes the contact interface more stable, reducing the "scratching" effect that may occur due to large-area contact. Therefore, during the movement of the moving spring 4 along the axial direction (i.e., the X direction) of the spindle 2, the debris generated by sliding friction between the moving spring 4 and the pressure spring 3 is further suppressed.

[0076] For example, in some embodiments of this application, the clearance structure 401 provided in the contact area where the movable spring 4 and the pressure spring 3 respectively contact is constructed with a chamfer, so that the actual contact area of ​​the movable spring 4 is transformed from a rectangular shape to a trapezoidal shape. Through this chamfer design, the movable spring 4 removes part of the area of ​​the pressure spring 3 by chamfering, thereby reducing the "contact surface" area where the movable spring 4 and the pressure spring 3 actually make contact.

[0077] Alternatively, in some embodiments of this application, the avoidance structure 401 provided in the contact area where the movable spring 4 and the pressure spring 3 respectively contact is constructed as a recess. In the thickness direction (i.e., the X direction) of the movable spring 4, the surface of the recessed movable spring 4 facing the pressure spring 3 is recessed away from the side of the pressure spring 3. Thus, in the thickness direction (i.e., the X direction) of the movable spring 4, the bottom surface of the recess is spaced apart from the pressure spring 3. Through this recessed design, unnecessary contact areas are effectively avoided by utilizing the space between the bottom surface of the recess and the pressure spring 3, thereby reducing the actual contact area of ​​the "contact surface" where the movable spring 4 and the pressure spring 3 make contact.

[0078] In summary, according to the moving contact assembly 100 of this application, by providing a clearance structure 401 in the area where the moving spring 4 and the pressing spring 3 abut, the actual contact area between the two is reduced. This effectively reduces the debris generated by sliding friction between the moving spring 4 and the pressing spring 3 during axial movement, further reducing the risk of relay short circuits, jamming, or malfunctions caused by this.

[0079] See Figure 1In some embodiments of this application, the compression spring 3 includes a spring body 31 and a limiting portion 32. The spring body 31 includes an assembly portion 311 and two deformation portions 312. Specifically, the spring body 31 includes one assembly portion 311 and two deformation portions 312. In the longitudinal direction (i.e., the Y direction) of the moving contact assembly 100, the two deformation portions 312 are respectively connected to both ends of the assembly portion 311. The limiting portion 32 is disposed on the deformation portion 312. This structural layout allows the main body of the compression spring 3 (i.e., the spring body 31) to be stably installed or positioned through the assembly portion 311 in the middle, while the deformation portions 312 located at both ends become the main functional areas for elastic deformation and generating restoring force, and also serve as the carrier of the limiting structure.

[0080] Furthermore, each deformable portion 312 has a bent region 3120 at one end away from the assembly portion 311 along its extension direction (i.e., the Y direction). This bent region 3120 is configured to have a specific curved surface profile. In the normal or working state after the moving contact assembly 100 is assembled, the curved surface of the bent region 3120 is used to abut against the moving spring 4.

[0081] It is important to understand that utilizing the curved surface of the bent region 3120 in contact with the moving spring 4 effectively reduces the actual contact area between the deformed part 312 and the moving spring 4. Compared to a large-area planar contact, the limited curved surface contact concentrates the interaction force within a smaller area. Secondly, when the moving spring 4 reciprocates along the axial direction (X-direction) of the spindle 2 and slides relative to the compression spring 3 (for example, during compression and reset, there may be a slight relative sliding tendency at the contact point between the moving spring 4 and the compression spring 3), the curved surface structure significantly reduces the sliding friction resistance between them. The smooth curved surface facilitates the sliding of the contact head 41, thereby reducing heat accumulation and material wear caused by friction.

[0082] Therefore, reducing friction means lower motion resistance and smoother operation, which helps improve the response speed and consistency of the relay contact 41, especially in high-speed and frequent operation, reducing unnecessary energy loss. At the same time, reducing the contact area and friction directly reduces the probability and amount of friction debris, thus helping to eliminate reliability risks such as relay short circuits and jamming caused by internal debris. Furthermore, curved contact may make force transmission smoother, helping to improve the stress state of the moving spring 4 during movement, reducing local stress concentration, and thus positively impacting the long-term durability of both the moving spring 4 and the pressure spring 3.

[0083] In summary, according to the moving contact assembly 100 of this application, the compression spring 3 is designed as a spring body 31 including an assembly portion 311 and two deformation portions 312, and a bent surface is provided at the end of the deformation portion 312 to abut against the moving spring 4. This structure not only realizes the basic function of the compression spring 3 in providing elastic restoring force, but also achieves the technical effect of reducing the contact area and reducing friction by designing the contact area between the compression spring 3 and the moving spring 4 as a curved surface, thereby further improving the overall sensitivity, reliability and service life of the moving contact assembly 100.

[0084] In some embodiments of this application, the spring body 31 and the limiting part 32 are integrally formed. Specifically, in the production process of manufacturing the pressure spring 3, the pressure spring 3 can be cut and formed as a whole using a stamping process, and then the deformation part 312 can be bent using a bending process so that the deformation part 312 and the assembly part 311 form an angle, and a bending area 3120 is also formed in the deformation part 312 by the bending process. In addition, the limiting part 32 provided in the deformation part 312 is also bent using a bending process so that the limiting part 32 extends in the length direction (i.e., the X direction) of the moving contact assembly 100.

[0085] By integrally molding the reed body 31 and the limiting part 32 (i.e., integrally molding the compression spring 3), the need for the limiting part 32 to be assembled as a separate part is eliminated, simplifying the production process and improving production efficiency and consistency. More importantly, integral molding ensures that there is no connection interface (such as welding points, riveting points, or screw connections) between the reed body 31 and the limiting part 32, thereby fundamentally avoiding the risk of limiting function failure due to loose connections, fatigue, or corrosion, and greatly enhancing the mechanical integrity and long-term reliability of the overall structure. In addition, integrally molded structures generally have better overall rigidity and strength. As the part extending from the deformation part 312, the limiting part 32 is continuous with the base material of the deformation part 312 at its root, and the stress distribution is more uniform. When repeatedly subjected to the impact contact force brought by the deflection of the moving spring 4, it is not prone to plastic deformation or fracture, thus ensuring the long-term effectiveness of the limiting function throughout the entire life cycle of the relay.

[0086] It should be further noted that in some embodiments of this application, for example, the spring sheet 3 is formed in one step by a stamping and cutting process to form the spring sheet body 31 and the limiting part 32. The adjacent part of the limiting part 32 and the spring sheet body 31 may produce a certain amount of burrs due to the processing technology. The avoidance structure 401 provided in the spring sheet 3 can accommodate burrs to a certain extent to avoid burrs from contacting the spring sheet 3 and to avoid the generation of debris. In some embodiments of this application, the assembly part 311 is provided with a second assembly through hole, which has at least one straight edge. For example, the hole shape of the second assembly through hole can also be a waist-shaped hole, a "D"-shaped hole, a rectangular hole, or a diamond-shaped hole. The spindle 2 is sequentially passed through the first assembly through hole 40 of the moving spring sheet 4 and the second assembly through hole of the spring sheet 3, and is finally fixedly connected to the receiving part 1.

[0087] It is important to understand that by providing a second mounting through hole and inserting the mandrel 2 through it, the compression spring 3 is directly positioned and fixed on the receiving part 1. The fit between the mandrel 2 and the inner contour of the second mounting through hole ensures that the compression spring 3 cannot rotate around the axis of the mandrel 2 after installation. Since the compression spring 3 is not only a component that provides elastic restoring force, the limiting part 32 provided on it is also a key part of the double limiting mechanism that prevents the moving spring 4 from rotating. If the compression spring 3 itself rotates around its axis during operation, it will directly cause the preset gap relationship between its limiting part 32 and the outer peripheral surface of the moving spring 4 to change, and may even lose its limiting function, thus increasing the risk of the moving spring 4 deflecting when subjected to force.

[0088] In summary, according to the dynamic contact assembly 100 of this application, by providing a second mounting through hole with at least one straight edge in the mounting portion 311 of the pressure spring 3, the effect of preventing the pressure spring 3 from rotating relative to the spindle 2 is achieved, ensuring the effectiveness of the limiting function of the pressure spring 3 and the accuracy of the elastic action direction. This is an important guarantee for enhancing the long-term operational reliability of the dynamic contact assembly 100 under high-speed, high-frequency and vibration conditions.

[0089] In some embodiments of this application, the receiving member 1 is provided with a third mounting through hole, which has at least one straight edge. For example, the second mounting through hole can also be a waist-shaped hole, a "D"-shaped hole, a rectangular hole, or a diamond-shaped hole. Correspondingly, the section of the mandrel 2 that passes through the third mounting through hole has a cross-sectional shape that matches the inner contour of the third mounting through hole. Through this matching design, when the mandrel 2 passes through the third mounting through hole, its circumferential direction is constrained, and it cannot rotate relative to the receiving member 1. Subsequently, the end of the mandrel 2 is fixed to the receiving member 1 by a riveting process, thereby also firmly locking the mandrel 2 in the axial direction.

[0090] In summary, for the moving contact component 100 according to the present application, by providing at least one third assembly through-hole with a straight edge on the receiving member 1, and passing the core shaft 2 through it and then riveting and fixing it, the complete fastening of the core shaft 2 in the axial and circumferential directions on the receiving member 1 is achieved. The risk of the core shaft 2 rotating is eliminated, thereby further ensuring the position accuracy and contact reliability of the moving reed 4 and the contact 41 provided thereon during long-term dynamic operation, and improving the overall performance and service life of the relay.

[0091] Referring to Figure 4 As shown, in some embodiments of the present application, the first assembly through-hole 40 is configured as an oval hole. The aperture of the first assembly through-hole 40 in the first direction (i.e., the width direction of the moving reed 4, the Z direction) is R1, and the aperture of the first assembly through-hole 40 in the second direction (i.e., the length direction of the moving reed 4, the Y direction) is R2, satisfying the relationship: R1 < R2.

[0092] It should be understood that reducing the aperture R1 in the width direction (i.e., the Z direction) of the moving reed 4 means that in the width dimension of the moving reed 4, the effective material area of the hole edge from the main edge of the moving reed 4 is wider. This directly increases the effective cross-sectional area and material continuity of the moving reed 4 in its width direction (i.e., the Z direction). During the high-speed and frequent opening and closing operations of the relay, the moving reed 4 not only bears the impact load in the axial direction (i.e., the X direction), but may also be subjected to lateral vibration or instantaneous torsion. The larger effective area can more evenly distribute and bear these dynamic stresses, significantly improving the overall rigidity, impact resistance and long-term fatigue resistance of the moving reed 4, fundamentally reducing the risk of cracks or fractures in the reed near the hole position due to stress concentration, and extending the service life of the component.

[0093] Secondly, maintaining a larger aperture R2 of the first assembly through-hole 40 in the length direction (i.e., the Y direction) of the moving reed 4 is beneficial to optimizing the guiding and mating effect between it and the core shaft 2. The cross-sectional shape of the core shaft 2 matches the oval hole, and the larger dimension in the length direction (i.e., the Y direction) of the moving reed 4 provides a more sufficient guiding contact length between the core shaft 2 and the moving reed 4. This enables the core shaft 2 to more stably restrain the moving reed 4 in the Y-Z plane when the moving reed 4 moves axially (i.e., the X direction) along the core shaft 2, effectively suppressing the possible slight rotational tendency around the X axis (the axis of the core shaft 2), and ensuring the accuracy and stability of the guiding.

[0094] In summary, for the moving contact component 100 of the present application, by specifically configuring the first assembly through-hole 40 as an oval hole satisfying the relationship "R1 < R2", the moving reed 4 obtains a larger effective bearing area in its width direction, thereby significantly enhancing its mechanical properties of impact resistance and fatigue resistance; at the same time, the larger aperture of the moving reed 4 in its length direction ensures good guiding and mating stability between it and the core shaft 2.

[0095] Combination Figure 3 and Figure 4 As shown, in some embodiments of this application, a single positioning notch 402 is provided on one side of the movable spring 4 in the width direction (i.e., the first direction, Z direction), and this positioning notch 402 is located on one side of the first mounting through hole 40 in the length direction (i.e., the second direction, Y direction) of the movable spring 4. Specifically, the positioning notch 402 is formed on the edge of the movable spring 4, and its shape and size are configured to precisely match the positioning protrusion on a dedicated riveting tool.

[0096] It is important to understand that during the relay manufacturing and assembly process, the contact 41 on the moving spring 4 needs to be accurately riveted or welded to its designated surface. If the moving spring 4 is placed in the wrong orientation at the riveting station (for example, the side of the surface used to set the contact 41 should be facing upwards, but the other side is mistakenly facing upwards), the contact 41 will be incorrectly installed on the wrong surface, ultimately causing the entire moving contact assembly to be scrapped, seriously affecting production efficiency and product qualification rate. Traditional methods mainly rely on the operator's visual judgment and experience for orientation identification, which is easily prone to misoperation due to fatigue or negligence in high-speed mass production.

[0097] Therefore, this application establishes a physical error prevention and automatic guiding mechanism by providing a single positioning notch 402 on one side of the moving spring 4 in the width direction (Z direction) and cooperating with the positioning protrusion on the riveting tool. When the operator assembles, they only need to place the moving spring 4 into the corresponding cavity of the riveting tool. If the moving spring 4 is oriented correctly (i.e., the contact 41 facing the assembler), the positioning notch 402 on the moving spring 4 will smoothly engage with the positioning protrusion on the tool, and the moving spring 4 can be stably placed in position. If the orientation is incorrect (i.e., the contact 41 facing away from the assembler), since the positioning notch 402 only exists on one side of the moving spring 4 and there is no corresponding structure on the other side, the moving spring 4 will not be able to match the positioning protrusion of the tool, thus it cannot be fully inserted or is unstable, which can indicate an incorrect orientation to the operator.

[0098] In summary, according to the moving contact assembly 100 of this application, a single positioning notch 402 is provided on one side of the moving spring 4 in the width direction (Z direction), and it is located on one side of the first assembly through hole 40 in the length direction (Y direction). This positioning notch 402 cooperates with the positioning protrusion of the riveting tool to ensure that the moving spring 4 is placed in the correct direction (i.e., the contact 41 facing the assembly personnel) when riveting the contact head 41. This design is simple in structure, reliable in preventing errors, and effectively avoids batch assembly errors and product scrap caused by the reverse installation of the moving spring 4, significantly improving production assembly efficiency, first-pass yield, and quality consistency.

[0099] See Figure 5As shown, the relay 1000 according to this application is equipped with the moving contact assembly 100 of some of the above embodiments. Because the moving contact assembly 100 employs a mating structure where a single spindle 2 and a single first mounting through hole 40 on the moving spring 4, having at least one straight edge, are used, the mechanical strength and fatigue resistance of the moving spring 4 are significantly improved while ensuring axial stable guidance and preventing rotation around the axis. This avoids stress concentration and assembly accuracy problems caused by multi-hole, multi-axis structures. Furthermore, the limiting portion 32 on the pressure spring 3 is provided with a clearance fit to the outer peripheral surface of the moving spring 4, forming a double limiting mechanism to prevent rotation of the moving spring 4. This effectively suppresses contact 41 skewing and ensures electrical contact reliability while reducing the risk of short circuits or jamming caused by debris generated from continuous friction. Therefore, the overall reliability and durability of the moving contact assembly 100 under high-speed, high-load, and vibration conditions are enhanced. Therefore, for the relay 1000 equipped with the moving contact assembly 100 of some of the above embodiments, the relay 1000 has better reliability and durability.

[0100] See Figure 5 As shown, in some embodiments of this application, the relay 1000 may include a housing 200, a magnetic motion mechanism 300, at least one moving contact assembly 100, and a corresponding number of stationary contact assemblies 400. The magnetic motion mechanism 300 may include a magnetic circuit carrier 310 and a magnetic actuator 320. The magnetic circuit carrier 310 is fixed to the housing 200, and the magnetic actuator 320 is disposed on the magnetic circuit carrier 310. The magnetic actuator 320 is configured to move relative to the magnetic circuit carrier 310 along a linear motion direction. The moving contact assembly 100 is disposed on the magnetic actuator 320, and the stationary contact assemblies 400 are disposed on the housing 200. In the linear motion direction, the corresponding stationary contact assembly 400 and the moving contact assembly 100 are disposed opposite each other.

[0101] Specifically, the moving contact assembly 100 is mounted and moves with the magnetic actuator 320, while the stationary contact assembly 400 is fixedly mounted on the housing 200. In the linear motion direction, the moving contact assembly 100 and the stationary contact assembly 400 are arranged opposite each other. When the relay coil is energized or de-energized, the magnetic actuator 300 generates electromagnetic force to drive the magnetic actuator 320 to reciprocate rapidly in a linear direction, thereby causing the moving contact assembly 100 fixed thereon to move synchronously, so that its contacts 41 make closed contact or open contact with the contacts of the stationary contact assembly 400 fixed on the housing 200, thus completing the circuit's on / off control.

[0102] It is important to understand that by directly mounting the moving contact assembly 100 onto the magnetic actuator 320, and utilizing the linear reciprocating motion of the magnetic actuator 320 to directly drive the moving spring 4, this arrangement shortens the force transmission path and reduces potential mechanical losses and response lag in intermediate transmission links. Furthermore, the single-core shaft 2 guiding and double-limiting structure employed in the moving contact assembly 100 ensures that the moving spring 4 maintains extremely high posture stability while precisely aligning with the stationary contact assembly 400 when the magnetic actuator 320 drives the moving contact assembly 100 at high speed. This not only ensures the uniformity of contact pressure and alignment accuracy of the contact 41 at the moment of closure, effectively preventing contact misalignment, bouncing, or poor contact caused by minor vibrations or deflections during the movement of the magnetic actuator 320, but also significantly improves the electrical life and operational reliability of the relay 1000 under high-frequency switching conditions.

[0103] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0104] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A dynamic contact component (100), characterized in that, include: A receiving element (1) and a single mandrel (2), the mandrel (2) protruding from the receiving element (1); A compression spring (3) and a moving spring (4) are arranged along the axial direction of the mandrel (2). The compression spring (3) is stacked between the receiving member (1) and the moving spring (4). The compression spring (3) is configured to provide a force to the moving spring (4) that moves away from the receiving member (1). The moving spring (4) has a first mounting through hole (40) through which the mandrel (2) passes. The first mounting through hole (40) has at least one straight edge. The compression spring (3) is provided with a limiting part (32), which is adapted to abut against the outer peripheral surface of the moving spring (4) to limit the circumferential rotation of the moving spring (4) around the spindle (2).

2. The moving contact assembly (100) according to claim 1, characterized in that, The limiting part (32) is in clearance fit with the outer peripheral surface of the moving spring (4).

3. The moving contact assembly (100) according to claim 1, characterized in that, The surface of the limiting part (32) facing the moving spring (4) is curved.

4. The moving contact assembly (100) according to claim 1, characterized in that, In the first direction, at least two limiting parts (32) are provided on the same side of the compression spring (3), and the two limiting parts (32) are respectively located on both sides of the spindle (2) in the second direction; The first direction, the second direction, and the axial direction of the mandrel (2) are arranged perpendicular to each other.

5. The moving contact assembly (100) according to claim 1, characterized in that, The area of ​​the moving spring (4) that contacts the compression spring (3) has a clearance structure (401). The avoidance structure (401) is constructed as a chamfer or a groove.

6. The moving contact assembly (100) according to claim 1, characterized in that, The compression spring (3) includes a spring body (31) and a limiting part (32). The reed body (31) includes: an assembly part (311) and two deformation parts (312), the two deformation parts (312) being respectively connected to both ends of the assembly part (311), and the limiting part (32) being disposed on the deformation parts (312); wherein, In the extending direction of the deformable part (312), a bending region (3120) is provided at one end of the deformable part (312) away from the assembly part (311), and the curved surface of the bending region (3120) abuts against the moving spring (4).

7. The moving contact assembly (100) according to claim 6, characterized in that, The reed body (31) and the limiting part (32) are integrally formed.

8. The moving contact assembly (100) according to claim 6, characterized in that, The assembly part (311) is provided with a second assembly through hole, the second assembly through hole having at least one straight edge; The mandrel (2) passes through the second assembly through hole to connect with the receiving part (1).

9. The moving contact assembly (100) according to claim 1, characterized in that, The receiving component (1) is provided with a third assembly through hole, the third assembly through hole having at least one straight edge; The mandrel (2) passes through the third assembly through hole to be riveted to the receiving part (1).

10. The moving contact assembly (100) according to claim 1, characterized in that, The first assembly through hole (40) is constructed as a waist-shaped hole. The diameter of the first assembly through hole (40) in the first direction is R1, and the diameter of the first assembly through hole (40) in the second direction is R2, satisfying the relationship: R1 < R2; The first direction, the second direction, and the axial direction of the mandrel (2) are arranged perpendicular to each other.

11. The moving contact assembly (100) according to claim 1, characterized in that, In the first direction, a single positioning notch (402) is provided on one side of the moving spring (4), and the positioning notch (402) is located on one side of the first mounting through hole (40) in the second direction. The positioning notch (402) is used to position and cooperate with the positioning protrusion of the riveting tool. The first direction, the second direction, and the axial direction of the mandrel (2) are arranged perpendicular to each other.

12. A relay (1000), characterized in that, include: The moving contact assembly (100) according to any one of claims 1 to 9.

13. The relay (1000) according to claim 12, characterized in that, include: Housing (200); A magnetic motion mechanism (300) includes a magnetic circuit carrier (310) and a magnetic actuator (320). The magnetic circuit carrier (310) is fixed to the housing (200), and the magnetic actuator (320) is disposed on the magnetic circuit carrier (310). The magnetic actuator (320) is configured to move relative to the magnetic circuit carrier (310) along a linear motion direction. At least one moving contact component (100) is disposed on the magnetic actuator (320). At least one static contact component (400) is disposed on the housing (200), and in the linear motion direction, the corresponding static contact component (400) and the dynamic contact component (100) are disposed opposite to each other.

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