Push rod type relay

Abstract

The utility model relates to the technical field of relays, and discloses a push rod type relay, which comprises a base, a static reed and a shell, the area between the contact connecting position and the base connecting position of the static reed is provided with a stop structure which is located between the static reed and the shell and restrains the static reed from deforming when the static reed is impacted by external force. Aiming at the particularity of the push rod type relay, the backstop structure which is arranged between the static reed and the shell and restrains the static reed from deforming when the static reed is impacted by external force is arranged in the area between the contact connecting position of the static reed and the base connecting position, so that the static reed is prevented from deforming when the push rod type relay is impacted or falls off. The stop structure between the static reed and the shell can limit the movement range of the static reed, and the impact force on the static reed is transferred to the shell through the stop structure, so that the deformation of the static reed body is reduced, the change of contact parameters is reduced, the reliable contact of the contacts is ensured, and the anti-falling capability is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of relay technology, specifically to a push rod type relay. Background Technology

[0002] A common push-rod relay mainly consists of a base, coil, yoke, armature, compression spring, push clip, moving spring, and stationary spring. The coil is mounted on the coil frame of the base, the yoke is mounted on the coil frame, the armature is mounted on the yoke via the compression spring in a swingable structure, the moving spring is vertically mounted on the base next to the armature, the stationary spring is vertically mounted next to the moving spring, and the push clip is horizontally mounted between the armature and the moving spring. The working principle of this type of push-rod relay is as follows:

[0003] - When the coil pins are energized, the excitation current of the coil will generate magnetic flux. The magnetic flux forms a magnetic circuit through the iron core, armature, yoke and working air gap, and generates electromagnetic attraction in the working air gap.

[0004] - When the excitation current rises to the set value, the electromagnetic attraction torque will overcome the counter torque of the moving spring, causing the armature to swing on the yoke, generating a pushing force on the pusher towards the moving spring. The pusher pushes the spring laterally, causing the moving contact of the moving spring to close with the stationary contact of the stationary spring.

[0005] - When the excitation current decreases to the set value, the reaction torque of the moving spring is greater than the electromagnetic attraction torque, which generates a pushing force on the push card towards the coil side. The push card pushes the armature laterally, so that the armature returns to the initial state, and the moving contact of the moving spring disconnects from the stationary contact of the stationary spring.

[0006] With the development of the times, push rod relays are being used more and more widely, such as in sockets and automotive applications. During production, transportation and daily use, they are prone to large impacts or drops, which can deform the stationary spring, causing significant changes in contact parameters and affecting contact stability. In severe cases, the push rod relay may fail because the contacts cannot make contact. Utility Model Content

[0007] The technical objective of this invention is to provide a push rod relay with strong drop resistance, addressing the unique characteristics of the aforementioned push rod relay and the shortcomings of existing technologies.

[0008] The technical solution adopted in this utility model is as follows:

[0009] A push rod type relay includes a base and a stationary reed and a housing mounted on the base;

[0010] The area between the contact connection position and the base connection position of the stationary spring has a stop structure located between the stationary spring and the housing, which constrains the deformation of the stationary spring when subjected to external impact.

[0011] The aforementioned technical measures address the unique characteristics of push-rod relays. In the area between the contact connection point and the base connection point of the stationary spring, a stop structure is provided between the stationary spring and the housing. This stop structure restricts the deformation of the stationary spring when subjected to external impact. When the push-rod relay is impacted or dropped, the stop structure between the stationary spring and the housing limits the range of motion of the stationary spring. The impact force on the stationary spring is transferred to the housing through the stop structure, thereby reducing the deformation of the stationary spring body, minimizing changes in contact parameters, ensuring reliable contact, and enhancing drop resistance. Furthermore, because the stop structure restricts the deformation of the stationary spring when impacted or dropped, a material with better conductivity can be selected for the stationary spring.

[0012] Furthermore, the stop structure is located in the middle of the area between the contact connection position of the stationary spring and the base connection position.

[0013] In the aforementioned technical measures, the stop structure is located in the middle of the area between the contact connection of the stationary spring and the base connection, preventing the stationary spring from undergoing significant deformation under the inertia of impact. This serves several purposes: firstly, it prevents the stop structure from being too close to the contact point of the stationary spring, thus preventing damage due to high temperatures at the contact point and preventing the contact point from undergoing an arc-shaped deformation; secondly, it prevents the stop structure from being too close to the base, thus preventing it from failing; and thirdly, it allows for flexible adjustment of the stop structure's dimensions, which enhances its drop resistance.

[0014] Furthermore, the stationary reed has integrally formed lead segments and contact segments that are misaligned in the thickness direction;

[0015] The pin segment is used as a molded base connection point, through which the relay is assembled and fixed on the base.

[0016] The contact segment is used as a shaped contact connection position, and a stationary contact is connected through the contact connection position;

[0017] The contact segment is arranged in a staggered manner with the pin segment in the thickness direction with a bent transition structure. In the relay structure, the pin segment is close to the moving spring assembly, and the contact segment is far away from the moving spring assembly.

[0018] The above-mentioned technical measures are aimed at the application of push rod relays in high-current environments, where it is necessary to form a large current-carrying area and high current-carrying performance between the moving and stationary springs. In this way, the required fit clearance between the contacts is formed without changing the overall structure of the push rod relay as much as possible. By using a bent transition structure to offset the contact segment of the stationary spring from the lead segment in the thickness direction, the necessary arrangement space is borrowed from the housing side, effectively increasing the required fit clearance between the stationary spring and the moving spring. This allows the push rod relay to achieve a reliable high current-carrying effect without significantly increasing the overall structure.

[0019] The bent structure of the stationary spring has two advantages. First, the distance between the bend and the stationary contact is shorter, making the stationary spring stronger and less prone to deformation during a drop. Second, it allows the stationary contact surface to have a certain angle, ensuring that when the moving contact approaches the stationary contact in a large-gap product, the contact center makes contact, resulting in better contact alignment.

[0020] Furthermore, the area between the contact connection position and the bending transition position of the stationary spring is used as a stop structure.

[0021] In the above technical measures, the area between the contact connection position and the bending transition position of the stationary spring sheet is used to set a stop structure, which facilitates the stamping and forming of the stop structure.

[0022] Furthermore, the stop structure is a protrusion of the stationary spring sheet that protrudes outward toward the outer casing;

[0023] And / or, the stop structure is a protrusion two on the outer shell that bulges outward toward the static spring area.

[0024] The above-mentioned technical measures are designed to address the unique characteristics of push-rod relays. The stop structure is a protrusion on the side of the stationary spring that bulges outward toward the housing. When the push-rod relay is subjected to impact or drop, the protrusion will touch the housing before the stationary spring, thus limiting the range of motion of the stationary spring. The impact force on the stationary spring is transferred to the housing through the protrusion, thereby reducing the deformation of the stationary spring body, minimizing changes in contact parameters, ensuring reliable contact, and enhancing drop resistance.

[0025] The above-mentioned technical measures are designed to address the unique characteristics of push-rod relays. The stop structure consists of a first protrusion protruding outward from the stationary spring towards the housing, and a second protrusion protruding outward from the housing towards the stationary spring area. When the push-rod relay is subjected to impact or drop, the first protrusion will contact the housing before the stationary spring, and the second protrusion will contact the stationary spring before the housing. This limits the range of motion of the stationary spring, and the impact force on the stationary spring is transferred to the housing through the first and second protrusions, thereby reducing the deformation of the stationary spring body, minimizing changes in contact parameters, ensuring reliable contact, and thus enhancing drop resistance.

[0026] The above-mentioned technical measures are designed to address the unique characteristics of push-rod relays. The stop structure consists of a second protrusion protruding from the outer casing towards the stationary spring area. When the push-rod relay is subjected to impact or drop, the second protrusion will contact the stationary spring before the outer casing, thus limiting the range of motion of the stationary spring. The impact force on the stationary spring is transferred to the casing through the second protrusion, thereby reducing the deformation of the stationary spring body, minimizing changes in contact parameters, ensuring reliable contact, and enhancing drop resistance.

[0027] The aforementioned stop structure is simple in design and, while having strong drop resistance, can minimize the impact on the assembly of the outer shell and internal structure.

[0028] Furthermore, in the relay structure, when the contacts are not in contact, there is a gap between the protrusion on the stationary spring and the outer casing;

[0029] And / or, there is a gap between the second protrusion on the outer casing and the stationary spring.

[0030] The gaps mentioned above allow the stationary reed to have some movement space during the contact between the moving and stationary contacts, preventing interference between the stationary reed and the housing during normal use, which could lead to a magnetic gap caused by the armature and iron core not being able to fully fit together, thus ensuring the relay can engage normally. At the same time, by controlling the gaps between protrusion one and the housing, and between protrusion two and the stationary reed, the ease of assembly of the housing on the base is ensured.

[0031] Furthermore, the gap between the protrusion on the stationary spring and the outer casing is 0.1mm to 0.25mm;

[0032] And / or, the gap between the second protrusion on the outer casing and the stationary spring is 0.1mm to 0.25mm.

[0033] The aforementioned technical measures, by controlling the gap between protrusion one and the housing to be 0.1mm to 0.25mm, and the gap between protrusion two and the stationary spring to be 0.1mm to 0.25mm, ensure that protrusion one and / or protrusion two can effectively perform their drop resistance function, ensuring the stability of the relay during normal operation. If the gap between protrusion one and the housing, or the gap between protrusion two and the stationary spring, is greater than 0.25mm, the corresponding stop structure position of the stationary spring cannot touch the housing during a drop. The stop structure cannot function, and the housing cannot absorb the impact force (energy) on the stationary spring, resulting in a large deformation of the stationary spring, significant changes in contact parameters, affecting contact stability, and even causing the internal stress to exceed the yield limit, leading to plastic deformation of the spring and ultimately causing the push rod relay to fail. If the gap between protrusion one and the outer shell, or the gap between protrusion two and the stationary spring, is less than 0.1mm, the spring may interfere with the shell during normal use, resulting in the armature and the iron core not being able to fit completely together, causing a magnetic gap. This, in turn, affects the relay's engagement, thus affecting the stability of the push rod relay during normal operation.

[0034] Furthermore, the protrusion is an outwardly protruding structure integrally stamped from the stationary spring sheet.

[0035] In the above-mentioned technical measures, the protrusion 1 is a stamped structure on the stationary spring, which has a simple forming structure and is easy to form. Furthermore, the position of the protrusion 1 to be formed can be flexibly adjusted on the stationary spring according to design requirements to meet different specification needs.

[0036] Furthermore, the protrusion is a convex structure or a tongue-shaped bending structure on the stationary spring.

[0037] In the above technical measures, the protrusion is a tongue-shaped bending structure, which can flexibly adjust the size of the protrusion along the contact gap direction on the stationary spring according to the design requirements to meet different specification requirements.

[0038] Furthermore, the stationary spring is made of pure copper; the thickness of the stationary spring is greater than the thickness of the moving spring.

[0039] In the aforementioned technical measures, the stationary spring is made of pure copper, which improves its conductivity, reduces heat dissipation, and enhances the overall electrical performance. The thickness of the stationary spring is greater than that of the moving spring. This increases the stationary spring's current-carrying capacity and reduces heat dissipation; strengthens its structural integrity; and helps prevent secondary closure of the contacts.

[0040] One or more technical solutions provided by this utility model have at least the following technical effects or advantages:

[0041] This invention addresses the unique characteristics of push-rod relays by incorporating a stop structure located between the contact connection point and the base connection point of the stationary spring. This stop structure, situated between the stationary spring and the housing, constrains the deformation of the stationary spring under impact. When the push-rod relay is subjected to impact or drop, the stop structure restricts the range of motion of the stationary spring, transferring the impact force to the housing via the stop structure. This reduces the deformation of the stationary spring, minimizes changes in contact parameters, ensures reliable contact, and enhances drop resistance. Furthermore, because the stop structure constrains the deformation of the stationary spring under impact or drop, a material with better conductivity can be selected for the stationary spring. Attached Figure Description

[0042] The accompanying drawings, which are provided to further illustrate the embodiments of the present invention and constitute a part of the present invention, do not constitute a limitation thereof.

[0043] Figure 1 This is a schematic diagram of the installation structure of the stationary spring in one embodiment of this utility model;

[0044] Figure 2 yes Figure 1 Enlarged view of point B in the middle;

[0045] Figure 3 This is a schematic diagram of the static spring in this utility model;

[0046] Figure 4 This is a schematic diagram showing the effect of the stationary spring in use in this utility model (with the outer shell removed).

[0047] Figure 5 This is a schematic diagram of the installation structure of the stationary spring in another embodiment of this utility model;

[0048] Figure 6 yes Figure 5 Enlarged view of point A in the middle;

[0049] Among them, 1-base; 2-static spring; 3-outer shell; 4-protrusion one; 5-dynamic spring assembly; 6-protrusion two. Detailed Implementation

[0050] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, where there is no conflict, the embodiments of this utility model and the features within them can be combined with each other.

[0051] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0052] Example 1

[0053] Reference Figures 1-4 This embodiment provides a push rod type relay, including a base 1, a stationary spring 2 and a housing 3 assembled on the base 1; the stationary spring 2 is made of pure copper; the thickness of the stationary spring 2 is greater than the thickness of the moving spring.

[0054] The area between the contact connection position and the base connection position of the stationary spring 2 has a stop structure located between the stationary spring 2 and the outer shell 3, which constrains the deformation of the stationary spring 2 when subjected to external impact.

[0055] The stop structure is located in the middle of the area between the contact connection position of the stationary spring 2 and the base connection position.

[0056] The stationary reed 2 has integrally formed lead segments and contact segments that are offset in the thickness direction;

[0057] The pin segment is used as a connection point for the molded base, and the relay is assembled and fixed on the base 1 through the pin of the base connection point;

[0058] The contact segment is used as a shaped contact connection position, and the stationary contact is connected through the contact connection position;

[0059] The contact segment is arranged in a staggered manner with the pin segment in the thickness direction with a bent transition structure. In the relay structure, the pin segment is close to the moving spring assembly 5, and the contact segment is far away from the moving spring assembly 5.

[0060] The area between the contact connection position and the bending transition position of the stationary reed 2 is used to set the stop structure.

[0061] The stop structure is a protrusion 4 that protrudes outward from the side of the static spring 2 facing the outer shell 3;

[0062] Protrusion 4 is an outwardly protruding structure integrally stamped from the stationary spring sheet 2;

[0063] Protrusion 4 is a tongue-shaped bending structure on the stationary spring 2.

[0064] In the relay structure, when the contacts are not in contact, there is a gap between the protrusion 4 on the stationary reed 2 and the outer casing 3; the gap between the protrusion 4 on the stationary reed 2 and the outer casing 3 is 0.1mm.

[0065] Example 2

[0066] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0067] Protrusion 1 is a tongue-shaped bending structure on the stationary spring, while Protrusion 2 is an outwardly protruding structure that is separate from the stationary spring.

[0068] In the relay structure, when the contacts are not in contact, there is a gap between the protrusion on the stationary reed and the outer casing; the gap between the protrusion on the stationary reed and the outer casing is 0.25mm.

[0069] Example 3

[0070] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0071] The protrusion is a bulge structure on the stationary reed.

[0072] In the relay structure, when the contacts are not in contact, there is a gap between the protrusion on the stationary reed and the outer casing; the gap between the protrusion on the stationary reed and the outer casing is 0.2mm.

[0073] Example 4

[0074] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0075] Protrusion 1 is a protruding structure on the stationary spring sheet, while Protrusion 2 is an externally protruding structure that is separate from the stationary spring sheet.

[0076] Example 5

[0077] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0078] The stop structure is a protrusion on the outer shell that bulges outward toward the static spring area.

[0079] In the relay structure, when the contacts are not in contact, there is a gap between the second protrusion on the housing and the stationary spring, and the gap between the second protrusion on the housing and the stationary spring is 0.1mm.

[0080] The second protrusion is a rib structure, which is an outwardly protruding structure integrally formed with the outer shell.

[0081] Example 6

[0082] The rest of the content of this embodiment is the same as that of embodiment 5, except that:

[0083] In the relay structure, when the contacts are not in contact, there is a gap between the second protrusion on the housing and the stationary spring, and the gap between the second protrusion on the housing and the stationary spring is 0.25mm.

[0084] The second protrusion is a boss structure, which is an outward protrusion structure that is separate from the outer shell.

[0085] Example 7

[0086] The rest of the content of this embodiment is the same as that of embodiment 5, except that:

[0087] In the relay structure, when the contacts are not in contact, there is a gap between the second protrusion on the housing and the stationary spring, and the gap between the second protrusion on the housing and the stationary spring is 0.2mm.

[0088] The second protrusion is a rib structure, which is an outward protrusion structure that is separate from the outer shell.

[0089] Example 8

[0090] The rest of the content of this embodiment is the same as that of embodiment 5, except that:

[0091] The second protrusion is a convex structure, which is an outwardly convex structure integrally formed with the outer shell.

[0092] Example 9

[0093] The rest of the content of this embodiment is the same as that of embodiment 1, except that:

[0094] Reference Figures 5-6 The stop structure consists of a protrusion 4 on the side of the stationary spring 2 facing the outer shell 3, and a protrusion 6 on the area of ​​the outer shell 3 facing the stationary spring 2.

[0095] In the relay structure, when the contacts are not in contact, there are gaps between the protrusion 4 on the stationary reed 2 and the outer casing 3, and between the protrusion 6 on the outer casing 3 and the stationary reed 2.

[0096] The gap between protrusion 4 on the stationary spring 2 and the outer shell 3 is 0.1mm, and the gap between protrusion 6 on the outer shell 3 and the stationary spring 2 is 0.1mm.

[0097] Protrusion 2 6 is a convex rib structure, which is an outward convex structure integrally formed with the outer shell 3.

[0098] Example 10

[0099] The rest of the content of this embodiment is the same as that of embodiment 9, except that:

[0100] The gap between the first protrusion on the stationary spring and the outer shell is 0.25mm, and the gap between the second protrusion on the outer shell and the stationary spring is 0.25mm.

[0101] Example 11

[0102] The rest of the content of this embodiment is the same as that of embodiment 9, except that:

[0103] The gap between protrusion one on the stationary spring and the outer shell is 0.2mm, and the gap between protrusion two on the outer shell and the stationary spring is 0.2mm.

[0104] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0105] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A push rod type relay comprising a base (1) and a static spring blade (2) and a housing (3) assembled on the base (1); Characterized in that: The area between the contact connection position and the base connection position of the static spring blade (2) has a stop structure between the static spring blade (2) and the housing (3) to restrict the deformation of the static spring blade (2) when it is impacted by external force.

2. The push rod type relay according to claim 1, characterized in that: The stop structure is arranged at the middle of the area between the contact connection position and the base connection position of the static spring blade (2).

3. The push rod type relay according to claim 2, characterized in that: The static spring blade (2) has a pin section and a contact section which are integrally formed and misaligned in the thickness direction; The pin section is used as a formed base connection position, and the pin through the base connection position is assembled and fixed on the base (1) of the relay; The contact section is used as a formed contact connection position, and the static contact is connected through the contact connection position; The contact section is misaligned with the pin section in the thickness direction through a bending transition structure, and in the relay structure, the pin section is close to the moving spring assembly (5), and the contact section is away from the moving spring assembly (5).

4. The push rod type relay according to claim 3, characterized in that: The area between the contact connection position and the bending transition position of the static spring blade (2) is used to arrange the stop structure.

5. The push rod type relay according to claim 1, 2, 3 or 4, characterized in that: The stop structure is a protrusion one (4) which is convex to the side of the static spring blade (2) towards the housing (3); And / or, the stop structure is a protrusion two (6) which is convex to the area of the static spring blade (2) towards the housing (3).

6. The push rod type relay according to claim 5, characterized in that: In the relay structure, in the non-contact state of the contact, there is a gap between the protrusion one (4) on the static spring blade (2) and the housing (3); And / or, there is a gap between the protrusion two (6) on the housing (3) and the static spring blade (2).

7. The push rod type relay according to claim 6, characterized in that: The gap between the protrusion one (4) on the static spring blade (2) and the housing (3) is 0.1mm-0.25mm; And / or, the gap between the protrusion two (6) on the housing (3) and the static spring blade (2) is 0.1mm-0.25mm.

8. The push rod type relay according to claim 5, characterized in that: The protrusion one (4) is an integrally formed convex structure of the static spring blade (2).

9. The push rod type relay according to claim 8, characterized in that: The protrusion one (4) is a convex structure or a tongue-shaped bending structure on the static spring blade (2).

10. The push rod type relay according to claim 1, characterized in that: The static spring blade (2) is made of pure copper; The thickness of the static spring blade (2) is greater than the thickness of the moving spring blade.

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