A relay
By setting an adjustment structure, such as a hole or slot, on the normally open terminal of the relay to change the distance between the moving and stationary contacts, the problem of spring deformation caused by adjusting the gap between the armature and the iron core in the prior art is solved, and low-cost and efficient overtravel adjustment is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN SANYOU AUTO ELECTRIC APPLIANCE CO LTD
- Filing Date
- 2025-07-22
- Publication Date
- 2026-07-24
AI Technical Summary
Existing technology controls relay overtravel by adjusting the gap between the armature and the core by pushing the armature, which causes pits to form on the upper surface of the armature, affecting the deformation of the spring and thus affecting product parameters.
By setting an adjustment structure, such as a hole or slot structure, on the normally open terminal block, the terminal block is driven to move and change the distance between the moving and stationary contacts, thereby achieving overtravel adjustment and avoiding direct adjustment of the armature and core gap.
It enables relay overtravel adjustment without affecting other parameters, reduces accuracy requirements and costs, and improves the versatility and maintainability of the relay.
Smart Images
Figure CN224554280U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of relay technology, specifically relating to a relay for overtravel adjustment. Background Technology
[0002] Relay overtravel adjustment adjusts the final closing position of the armature by changing the initial gap between the iron core and the armature in the relay, thereby indirectly controlling the overtravel amount after the contact is closed. The specific principle is that by aligning with the hole reserved on the reed, the armature on the lower side of the reed is pushed, and the armature will push the iron core to move slightly downward, thereby adjusting the gap between the armature and the iron core to control the overtravel amount after the contact is closed.
[0003] However, the method of adjusting the gap between the armature and the core by pushing the armature has drawbacks. For example, the upper surface of the armature is subjected to force and forms a pit, which changes the flatness of the upper surface of the lower armature, resulting in slight deformation of the spring and thus affecting the product parameters. Utility Model Content
[0004] The purpose of this utility model is to disclose a relay, specifically a new relay overtravel adjustment scheme that does not affect other product parameters of the relay and achieves the same function of controlling relay overtravel at a lower cost.
[0005] To achieve the above objectives, this utility model discloses a relay, a base, a spring sheet mounted on the base, and a normally open terminal block. The spring sheet is provided with a moving contact, and the normally open terminal block is provided with a stationary contact.
[0006] The normally open terminal block is equipped with an adjustment structure, which drives the normally open terminal block to move in order to adjust the distance between the moving contact and the stationary contact.
[0007] As an optional implementation, the adjustment structure is a hole structure.
[0008] As an optional implementation, the hole structure is a through hole structure, which is provided through the thickness direction of the normally open terminal.
[0009] As an optional implementation, the adjustment structure is a slotted structure.
[0010] As an optional implementation, the slot structure is provided through the thickness direction of the normally open terminal and extends to one side of the normally open terminal in the width direction.
[0011] As an optional implementation, the base is provided with a normally open mounting port for a normally open terminal block to pass through, and the normally open terminal block is provided with a protrusion and is interference-fitted to the mounting port through the protrusion.
[0012] As an alternative implementation, a protrusion is provided on at least one of the two opposite sides of the normally open terminal along its own width direction.
[0013] As an alternative implementation, the outer surface of the bump has an arc transition.
[0014] As an optional implementation, the normally open terminal block includes a connecting section, a main body section, and a foot section connected in sequence. The connecting section is assembled with a stationary contact, the foot section extends to the outside of the base, and the adjustment structure is located in the main body section.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0016] The relay of this invention changes the distance between the moving and stationary contacts by adjusting the height of the normally open terminal, thus controlling the relay's overtravel. Furthermore, compared to existing solutions, the relay in this embodiment has lower precision requirements and lower cost, without affecting other relay parameters. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of a relay according to an embodiment of this application;
[0019] Figure 2 This is a front view of a relay according to an embodiment of this application;
[0020] Figure 3 This is a front cross-sectional view of a relay according to an embodiment of this application;
[0021] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;
[0022] Figure 5 This is a schematic diagram of the normally open terminal and stationary contact assembly of a relay according to an embodiment of this application;
[0023] Figure 6 This is a schematic diagram of the structure of a relay according to another embodiment of this application;
[0024] Attached diagram: 1-base, 11-assembly port, 2-iron core, 3-armature, 4-spring, 41-moving contact, 5-normally open terminal block, 51-stationary contact, 52-protrusion, 53-connecting section, 54-main body section, 55-end foot section, 61-hole structure, 62-slot structure. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.
[0027] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.
[0028] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.
[0029] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.
[0030] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.
[0031] Please see Figures 1-6 As shown, this application provides a relay.
[0032] In some embodiments, see Figure 1 and Figure 2 The relay includes a base 1 and an iron core 2, an armature 3, a spring 4, and a normally open terminal 5 mounted on the base 1. The spring 4 is provided with a moving contact 41, and the normally open terminal 5 is provided with a stationary contact 51. The normally open terminal 5 is provided with an adjustment structure, which drives the normally open terminal 5 to move so as to adjust the distance between the moving contact 41 and the stationary contact 51.
[0033] The purpose of this application is to propose a new overtravel adjustment method for products that does not affect other performance characteristics of the relay and achieves the same function of controlling the overtravel of the relay at a lower cost.
[0034] The relay overtravel refers to the remaining travel distance of the armature 3 to the core 2 during relay operation, after the moving and stationary contacts 51 have made contact. Therefore, to achieve the same overtravel adjustment function, embodiments of this application include an adjustment structure on the normally open terminal 5. This adjustment structure drives the normally open terminal 5 to move, changing the distance between the moving contact 41 and the stationary contact 51, thereby altering the overtravel of the relay product.
[0035] It should be noted that the movement of normally open terminal 5 refers to the vertical movement in the height direction. Taking the ZXY axis in the figure as an example, the height direction is the Z-axis direction. The normally open terminal 5 is driven to move up and down along the Z-axis by this adjustment structure.
[0036] It should be noted that the stationary contact 51 set on the normally open terminal 5 is a normally open stationary contact 51.
[0037] In summary, while existing technologies control relay overtravel by changing the distance between the armature 3 and the core 2, this embodiment adjusts the height of the normally open terminal 5 to change the distance between the moving contact 41 and the stationary contact 51, achieving the same effect of controlling relay overtravel. Furthermore, compared to existing solutions, the relay in this embodiment has lower precision requirements and lower cost during use, without affecting other relay parameters.
[0038] In some embodiments, see Figure 1-5 The adjustment structure is a hole structure 61, such as a circular hole, square hole, triangular hole, polygonal hole, irregular hole, etc. Or, a through hole, blind hole, etc.
[0039] In some embodiments, the hole structure 61 is a through hole structure 61, which extends through the normally open terminal 5 along its thickness direction. Taking the ZXY axis in the figure as an example, the thickness direction is the Y-axis direction.
[0040] This design allows the through-hole structure 61 to serve as an insertion or positioning point for adjustment tools, enabling the tools to operate more accurately on the through-hole structure 61. This allows for fine-tuning of the height of the normally open terminal 5, ensuring that the distance between the moving contact 41 and the stationary contact 51 meets design requirements. Furthermore, the through-hole structure 61 makes height adjustment of the normally open terminal 5 more flexible and convenient. It eliminates the need to replace the entire normally open terminal 5 or make large-scale structural modifications; simply by setting the through-hole structure 61 in the normally open terminal 5, the distance between the moving contact 41 and the stationary contact 51 can be changed to adapt to different electrical performance requirements or changes in the working environment, thus improving the relay's versatility and maintainability.
[0041] Of course, in some other embodiments, see [reference] Figure 6 The adjustment structure is a slot structure 62, such as a rectangular slot, a circular slot, a triangular slot, a trapezoidal slot, a semi-circular slot, etc. Specifically, the slot structure 62 is provided through the thickness direction of the normally open terminal 5 and extends to one side of the normally open terminal 5 in the width direction. This arrangement can achieve the same effect as the above-mentioned through-hole structure 61.
[0042] In some embodiments, see Figure 3 and Figure 4 The base 1 is provided with an assembly port 11 through which a normally open power supply terminal 5 passes. The normally open power supply terminal 5 is provided with a protrusion 52 and is interference-fitted to the assembly port 11 through the protrusion 52.
[0043] To adjust the overtravel of the relay, the embodiments of this application include an adjustment structure on the normally open terminal 5. This adjustment structure drives the normally open terminal 5 to move, changing the distance between the moving contact 41 and the stationary contact 51, thereby altering the overtravel of the relay. To prevent displacement of the normally open terminal 5 after it has been adjusted to a suitable height, a protrusion 52 is also provided on the normally open terminal 5. The normally open terminal 5 can be interference-fitted with the mounting opening 11 through this protrusion 52, thus effectively fixing the normally open terminal 5 after it has been adjusted to a suitable height.
[0044] It should be noted that, in addition to the aforementioned protrusion 52, once the relay overtravel is determined, i.e., after the normally open terminal 5 is adjusted to a suitable height position, the normally open terminal 5 can also be bonded and fixed to the base 1 with adhesive to further prevent displacement of the normally open terminal 5 after the relay overtravel is determined. The adhesive can be glue or other adhesives used for fixing.
[0045] In some embodiments, see Figure 3 and Figure 4 The normally open terminal 5 has protrusions 52 on both opposite sides along its width direction. Taking the ZXY axis in the figure as an example, the width direction is the X-axis direction. This arrangement enables the normally open terminal 5 to be fixed on both sides of the mounting port 11 of the base 1, further enhancing the stability of the connection.
[0046] Of course, in some other embodiments, the protrusion 52 can also be provided on one side of the normally open terminal 5 along its own width direction, which can also provide a certain degree of connection stability.
[0047] In some embodiments, the outer surface of the protrusion 52 has a curved transition. This curved transition design makes the protrusion 52 more smoothly inserted into the assembly port 11, without causing jamming or scratching due to sharp edges. This curved transition can reduce assembly difficulty and improve assembly efficiency.
[0048] In some embodiments, see Figure 5 The normally open terminal block 5 includes a connecting section 53, a main body section 54, and a foot section 55 connected in sequence. The connecting section 53 is assembled with the stationary contact 51, and the foot section 55 extends to the outside of the base 1. The adjustment structure is located in the main body section 54. This segmented design allows each section to be optimized in shape and size according to functional requirements, facilitating flexible layout in different application scenarios and adapting to complex internal spaces. Furthermore, the adjustment structure is located in the main body section 54, which is in a relatively easily accessible position, allowing for direct operation of the adjustment structure without disassembling or moving other components, thus improving adjustment efficiency.
[0049] Specifically, the protrusion 52 can be disposed on the main body section 54 of the normally open terminal 5; or, the protrusion 52 can be disposed at the junction of the main body section 54 and the connecting section 53 of the normally open terminal 5. With this arrangement, the main body section 54 is the main load-bearing part of the normally open terminal 5, which usually has high strength and rigidity. By placing the protrusion 52 on the main body section 54, the structural advantages of the main body section 54 can be fully utilized, so that the protrusion 52 and the mounting port 11 of the base 1 can form a more stable connection, thereby enhancing the overall structural stability of the terminal.
[0050] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.
Claims
1. A relay, characterized in that, The base body, the spring sheet mounted on the base body, and the normally open terminal block are provided. The spring sheet is provided with a moving contact, and the normally open terminal block is provided with a stationary contact. The normally open terminal block is equipped with an adjustment structure, which drives the normally open terminal block to move in order to adjust the distance between the moving contact and the stationary contact.
2. A relay according to claim 1, characterized in that, The adjustment structure is a hole structure.
3. A relay according to claim 2, characterized in that, The hole structure is a through hole structure, which is installed through the thickness direction of the normally open terminal.
4. A relay according to claim 1, characterized in that, The adjustment structure is a slotted structure.
5. A relay according to claim 4, characterized in that, The slot structure is provided through the thickness of the normally open terminal and extends to one side of the normally open terminal in the width direction.
6. A relay according to any one of claims 1-5, characterized in that, The base is provided with an assembly port for normally open terminals to pass through. The normally open terminals are provided with a protrusion and are interference-fitted at the assembly port through the protrusion.
7. A relay according to claim 6, characterized in that, A protrusion is provided on at least one of the two opposite sides of a normally open terminal along its width direction.
8. A relay according to claim 6, characterized in that, The outer surface of the bump has a curved transition.
9. A relay according to any one of claims 1-5, characterized in that, Normally open terminal blocks include a connecting section, a main body section, and a foot section connected in sequence. The connecting section is assembled with the stationary contact, the foot section extends to the outside of the base, and the adjustment structure is located in the main body section.