Relay with high-bearing contacts
The high-load contact design solves the problem of insufficient relay load capacity, achieves stable operation under high current and improves surge resistance, meets the needs of new high-power electrical appliances, and extends service life.
Patent Information
- Application Number
- CN202422960792.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-12-03
AI Technical Summary
The load capacity of existing relays is insufficient to meet the needs of new high-power electrical appliances, especially under complex working conditions, where the reliability and stability of the system are difficult to guarantee.
A high-load contact design is adopted, including increasing the contact diameter and composite layer thickness, using chromium-zirconium copper material and coating it with silver material, increasing the lead pin width and spacing between the dynamic and static reeds, and optimizing the material combination to improve conductivity and heat dissipation, thereby enhancing surge resistance.
The load capacity of the relay is increased from 10A to 16A, which reduces the thermal effect and mechanical stress caused by high current, enhances the surge resistance, ensures the stability and safety of the circuit system, and extends the service life.
Smart Images
Figure CN223471543U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to relay technology field, specifically a relay with high bearing contact. BACKGROUND
[0002] Relay is a kind of automatic control electric appliance widely used in electrical control circuit, it can control the on-off of large current circuit by small current, in the field of household appliances, from common refrigerator, air conditioner to various small kitchen appliances, HRS3FN relay plays the key role of controlling circuit on-off, coordinating the work of different function modules.
[0003] With the development of technology in these fields and the continuous enrichment of product functions, the requirement of relay load capacity is also increasing, the original HRS3FN product load capacity is only 10A, TV-5, gradually difficult to meet the needs of some new equipment or upgraded products, some new high-power electric appliances need relay to have higher load capacity to ensure the reliable operation of system under complex working conditions, in view of the above problems, therefore, a relay with high bearing contact is proposed. CONTENT OF UTILITY MODEL
[0004] The utility model discloses a relay with high bearing contact to make up for the deficiency of prior art.
[0005] To achieve the above object, the utility model provides the following technical scheme: a relay with high bearing contact, including relay main part, the bottom end one side of relay main part is fixedly connected with base, the top end one side of base is fixedly connected with dynamic spring piece, the outside surface of dynamic spring piece is fixedly connected with dynamic contact, the bottom center of dynamic spring piece is equipped with the window, the bottom end outer wall of dynamic spring piece is fixedly connected with dynamic spring bottom plate, one side bottom end of dynamic spring bottom plate is fixedly connected with dynamic spring lead-out foot, the top end other side of base is fixedly connected with static spring piece, the outside surface of static spring piece is fixedly connected with static contact, the center of static spring piece is equipped with recess, the bottom end outer wall of static spring piece is fixedly connected with static spring bottom plate, one side bottom end of static spring bottom plate is fixedly connected with static spring lead-out foot.
[0006] The above-mentioned static spring piece and dynamic spring piece are oppositely arranged about the base, the transverse diameter of the dynamic spring lead-out foot is 1.3mm, the transverse diameter of the static spring lead-out foot is 1.3mm, the dynamic spring lead-out foot and the static spring lead-out foot are oppositely distributed about the base, and the transverse diameter of the window is 0.5mm.
[0007] The moving contact is fixed at the center of the outer wall of the moving spring sheet, the outer surface diameter of the moving contact is 3.2 mm, the outer surface of the moving contact is covered with a composite layer, the vertical thickness of the composite layer on the surface of the moving contact is 0.35 mm, and the material of the composite layer is silver indium tin oxide.
[0008] The stationary contact is fixed at the center of the outer wall of the stationary spring sheet, the outer surface diameter of the stationary contact is 3.2 mm, the outer surface of the stationary contact is covered with a composite layer, the vertical thickness of the composite layer on the surface of the stationary contact is 0.35 mm, and the material of the composite layer is silver indium tin oxide.
[0009] The moving spring sheet and the stationary spring sheet are both made of chromium zirconium copper material, and the outer surfaces of the moving spring sheet and the stationary spring sheet are both covered with silver material.
[0010] The one side outer wall of the relay body is fixedly connected with a fixed block, the outer surface of the fixed block is fixedly connected with a clamping shaft, the two side outer walls of the moving spring sheet are fixedly connected with supports, the supports are arranged in a group, clamping grooves are arranged between the supports, and the clamping grooves are clamped and connected to the outer wall of the clamping shaft.
[0011] The two sides of the moving spring bottom plate are provided with first grooves, and the first grooves are triangular.
[0012] Compared with the prior art, the relay with high load contact has the following beneficial effects:
[0013] First, compared with the traditional HRS3FN1mm wide lead-out foot, the HRS3FT1.3mm wide lead-out foot can dissipate heat faster, thereby reducing the risk of performance degradation or damage of the moving spring sheet and the stationary spring sheet due to overheating, improving the reliability and stability of the relay, and prolonging the service life.
[0014] Second, by increasing the contact diameter and the thickness of the composite layer, the load capacity of the contact is effectively improved, and when processing 16A current, compared with the traditional product, the heat effect and mechanical stress caused by large current can be better coped with, the problems of contact overheating, wear and deformation caused by excessive current are reduced, the newly added indium element in the composite layer material makes the relay have good surge resistance, when a momentary high voltage surge occurs in the circuit, the contact can better withstand such impact, avoid contact damage or misoperation caused by surge, and ensure the stability and safety of the entire circuit system.
[0015] Third, the utility model discloses the material quality of moving spring piece and static spring piece is changed from traditional tin bronze to chromium zirconium copper, and silver material quality is covered, and chromium zirconium copper has higher strength and better conductivity, can better bear the mechanical stress and thermal stress when high current passes compared to tin bronze, and the silver material quality coating further improves the conductivity of contact, reduces contact resistance, reduces the contact wear caused by resistance heating under high current, thereby effectively improving the load capacity of relay, make it can satisfy the performance requirement from 10A to 16A, and enhance the surge resistance from TV-5 to TV-8.
[0016] Other advantages, objects, and features of the present utility model will be in part apparent and in part pointed out hereinafter based on the accompanying description taken in connection with the accompanying drawings and based on the appended claims, or will be learned from the practice of the present utility model. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is a schematic diagram of the relay with high bearing contact of the utility model;
[0018] Figure 2 It is a schematic diagram of the relay with high bearing contact of the utility model Figure 1 It is a schematic diagram of the relay with high bearing contact of the utility model;
[0019] Figure 3 It is a schematic diagram of the moving spring piece structure of the relay with high bearing contact of the utility model;
[0020] Figure 4 It is a schematic diagram of the static spring piece structure of the relay with high bearing contact of the utility model;
[0021] Figure 5 It is a schematic diagram of the moving contact structure of the relay with high bearing contact of the utility model;
[0022] Figure 6 It is a schematic diagram of the static contact structure of the relay with high bearing contact of the utility model.
[0023] In the drawing: 1, relay main body;101, base;102, fixed block;103, clamping shaft;2, moving spring piece;201, moving contact;202, support;203, clamping groove;204, window;205, moving spring bottom plate;206, first slot;207, moving spring lead-out foot;3, static spring piece;301, static contact;302, recess;303, static spring bottom plate;304, second slot;305, static spring lead-out foot. DETAILED DESCRIPTION
[0024] Clearly, the described embodiments are merely a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all the other embodiments obtained by the ordinary skilled in the art without making creative labor are within the scope of protection of the present utility model.
[0025] As shown in Figures 1-6 The utility model provides a kind of technical scheme: a relay with high bearing contact, including relay main body 1, the bottom end side of relay main body 1 is fixedly connected with base 101, the top end side of base 101 is fixedly connected with moving spring piece 2, the outside surface of moving spring piece 2 is fixedly connected with moving contact 201, the bottom center of moving spring piece 2 is equipped with window 204, the bottom end outer wall of moving spring piece 2 is fixedly connected with moving spring bottom plate 205, the bottom end of one side of moving spring bottom plate 205 is fixedly connected with moving spring lead-out leg 207, the top end other side of base 101 is fixedly connected with static spring piece 3, the outside surface of static spring piece 3 is fixedly connected with static contact 301, the center of static spring piece 3 is equipped with recess 302, the bottom end outer wall of static spring piece 3 is fixedly connected with static spring bottom plate 303, the bottom end of one side of static spring bottom plate 303 is fixedly connected with static spring lead-out leg 305, the outside wall of one side of relay main body 1 is fixedly connected with fixed block 102, the outer surface of fixed block 102 is fixedly connected with clamping shaft 103, the two sides outer wall of moving spring piece 2 is fixedly connected with support 202, and support 202 is a group of settings, clamping groove 203 is equipped between support 202, clamping groove 203 is clamped and connected on the outer wall of clamping shaft 103, the two sides of moving spring bottom plate 205 are equipped with first slot 206, and first slot 206 is triangularly set, the two sides of static spring bottom plate 303 are equipped with second slot 304.
[0026] According to the overall structure of the device, the relay main body 1 is the core support structure of the whole relay, the static spring sheet 3 and the dynamic spring sheet 2 are oppositely arranged on the base 101 and maintain a certain distance, at this time the dynamic contact 201 and the static contact 301 are in a separated state, the dynamic spring lead-out foot 207 and the static spring lead-out foot 305 are respectively led out from the dynamic spring bottom plate 205 and the static spring bottom plate 303, their transverse diameters are 1.3mm, which is increased compared with 1mm of the traditional HRS3FN, the window 204 at the bottom of the dynamic spring sheet 2 has a transverse diameter of 0.5mm, when the relay receives the electric signal of the control circuit, the electromagnetic system inside generates electromagnetic force, the electromagnetic force acts on the dynamic spring sheet 2, drives the dynamic spring sheet 2 to move to the static spring sheet 3 direction against its elastic force, in the moving process, the dynamic spring sheet 2 maintains a certain rigidity and elastic deformation, so that the dynamic contact 201 can stably approach the static contact 301, with the movement of the dynamic spring sheet 2, the dynamic contact 201 finally contacts the static contact 301 closely, so as to realize the conduction of the circuit, the increased width of the dynamic spring lead-out foot 207 and the static spring lead-out foot 305 enlarges the heat conduction area of the load end, when 16A current passes through the relay, a large amount of heat will be generated in the contact and the spring sheet, the widened lead-out foot can more efficiently conduct the heat away, reducing the accumulation of heat inside the relay, when the dynamic contact 201 and the static contact 301 gradually approach and finally contact and close, the current flows from the static spring lead-out foot 305 to the dynamic spring lead-out foot 207 through the static contact 301 and the dynamic contact 201, so as to make the external load circuit conductive, since the diameters of the dynamic contact 201 and the static contact 301 are increased to 3.2mm, compared with the 3mm diameter of the traditional HRS3FN, the contact area is increased, when passing through 16A current, the current density can be reduced, and the heating phenomenon can be reduced, at the same time, the 0.35mm thick silver indium tin oxide composite layer on the surface plays a role, the silver provides good electrical conductivity, the tin oxide enhances the hardness and arc ablation resistance of the material, and the new rare element indium endows the contact with good surge resistance, so that the relay can work stably under high current and surge impact, the dynamic spring sheet 2 and the static spring sheet 3 are both made of chromium zirconium copper material and coated with silver material on the outer surface, and this material combination has good electrical conductivity and heat dissipation.
[0027] As shown in Figures 1-6 , the static spring sheet 3 and the dynamic spring sheet 2 are oppositely arranged about the base 101, the transverse diameter of the dynamic spring lead-out foot 207 is 1.3mm, the transverse diameter of the static spring lead-out foot 305 is 1.3mm, the dynamic spring lead-out foot 207 and the static spring lead-out foot 305 are oppositely distributed about the base 101, and the transverse diameter of the window 204 is 0.5mm.
[0028] After the relay receives the electrical signal of the control circuit, the internal electromagnetic system generates electromagnetic force, which acts on the moving spring 2, drives the moving spring 2 to move to the static spring 3 direction against its elastic force, and in the moving process, the moving spring 2 maintains a certain rigidity and elastic deformation, so that the moving contact 201 can smoothly approach the static contact 301, and with the movement of the moving spring 2, the moving contact 201 finally contacts the static contact 301, thereby realizing the conduction of the circuit, and the increased width of the moving spring lead-out foot 207 and the static spring lead-out foot 305 enlarges the heat conduction area of the load end. When 16A current passes through the relay, a large amount of heat is generated at the contact and spring, and the widened lead-out foot can more efficiently conduct heat away, reducing the accumulation of heat inside the relay.
[0029] As shown in Figures 1-6 , the moving contact 201 is fixed to the outer wall center of the moving spring 2, the outer surface diameter of the moving contact 201 is 3.2mm, the outer surface of the moving contact 201 is covered with a composite layer, the vertical thickness of the surface composite layer of the moving contact 201 is 0.35mm, and the composite layer is made of silver indium tin oxide, the static contact 301 is fixed to the outer wall center of the static spring 3, the outer surface diameter of the static contact 301 is 3.2mm, the outer surface of the static contact 301 is covered with a composite layer, the vertical thickness of the surface composite layer of the static contact 301 is 0.35mm, and the composite layer is made of silver indium tin oxide.
[0030] By gradually approaching and finally contacting and closing the moving contact 201 and the static contact 301, the current flows from the static spring lead-out foot 305 to the moving spring lead-out foot 207 through the static contact 301 and the moving contact 201, thereby making the external load circuit conductive. Since the diameter of the moving contact 201 and the static contact 301 is increased to 3.2mm, compared with the traditional HRS3FN with a diameter of 3mm, the contact area is increased, which can reduce the current density and reduce the heating phenomenon when passing through 16A current. At the same time, the 0.35mm thick silver indium tin oxide composite layer on the surface plays a role, silver provides good electrical conductivity, tin oxide enhances the hardness and arc ablation resistance of the material, and the addition of the rare element indium gives the contact good surge resistance, so that the relay can work stably under high current and surge impact.
[0031] As shown in Figures 1-6 , the moving spring 2 and the static spring 3 are made of chromium zirconium copper, and the outer surfaces of the moving spring 2 and the static spring 3 are covered with silver.
[0032] The dynamic spring 2 and the static spring 3 are made of chromium-zirconium-copper material and coated with silver material on the outer surface. This material combination has good electrical conductivity and heat dissipation. When the dynamic contact 201 and the static contact 301 are in contact, the circuit is turned on, and the current flows from the static spring lead-out pin 305 to the static spring 3, passes through the static contact 301, the dynamic contact 201, and then flows to the dynamic spring lead-out pin 207. During the current passing process, the silver coating helps to reduce the contact resistance and heat generation, and the chromium-zirconium-copper material can quickly conduct heat away.
[0033] Working principle: The relay main body 1 is the core support structure of the entire relay. The static spring 3 and the dynamic spring 2 are oppositely arranged on the base 101 with a certain distance. At this time, the dynamic contact 201 and the static contact 301 are in a separated state. The dynamic spring lead-out pin 207 and the static spring lead-out pin 305 are respectively led out from the dynamic spring bottom plate 205 and the static spring bottom plate 303. Their transverse diameter is 1.3mm, which is larger than the 1mm of the traditional HRS3FN. The window 204 at the bottom of the dynamic spring 2 has a transverse diameter of 0.5mm. When the relay receives the electrical signal of the control circuit, the internal electromagnetic system generates electromagnetic force, which acts on the dynamic spring 2 and drives it to move towards the static spring 3 against its elastic force. During the movement, the dynamic spring 2 maintains a certain rigidity and elastic deformation, allowing the dynamic contact 201 to smoothly approach the static contact 301. With the movement of the dynamic spring 2, the dynamic contact 201 eventually comes into close contact with the static contact 301, thereby realizing the conduction of the circuit. The increased width of the dynamic spring lead-out pin 207 and the static spring lead-out pin 305 expands the heat dissipation area of the load end. When a 16A current passes through the relay, a large amount of heat is generated at the contacts and springs. The widened lead-out pin can more efficiently conduct heat away, reducing the accumulation of heat inside the relay.
[0034] When the dynamic contact 201 and the static contact 301 gradually approach and finally contact and close, the current flows from the static spring lead-out pin 305 to the dynamic spring lead-out pin 207 through the static contact 301 and the dynamic contact 201, thereby making the external load circuit conductive. Since the diameter of the dynamic contact 201 and the static contact 301 is increased to 3.2mm, compared with the 3mm diameter of the traditional HRS3FN, the contact area is increased, which can reduce the current density and heat generation when passing through a 16A current. At the same time, the 0.35mm thick silver-indium-tin oxide composite layer on the surface plays a role. Silver provides good electrical conductivity, tin oxide enhances the hardness and anti-arc ablation ability of the material, and the newly added rare element indium gives the contact good surge resistance, enabling the relay to work stably under high current and surge impact.
[0035] The moving spring piece 2 and the static spring piece 3 are made of chromium-zirconium-copper material and are coated with silver material on the outer surface, the combination of the materials has good conductivity and heat dissipation, when the moving contact 201 contacts with the static contact 301, the circuit is conducted, the current flows from the static spring lead-out pin 305 into the static spring piece 3, passes through the static contact 301, the moving contact 201, and then flows to the moving spring lead-out pin 207 through the moving spring piece 2, in the process of current passing, the silver coating layer helps to reduce the contact resistance and heat generation, and the chromium-zirconium-copper material can quickly conduct heat away.
[0036] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A relay with high load contact, comprising a relay body (1), characterized in that: The bottom end side of the relay body (1) is fixedly connected with a base (101), the top end side of the base (101) is fixedly connected with a moving spring sheet (2), the outer surface of the moving spring sheet (2) is fixedly connected with a moving contact (201), the bottom center of the moving spring sheet (2) is provided with an opening window (204), the bottom end outer wall of the moving spring sheet (2) is fixedly connected with a moving spring bottom plate (205), the side bottom end of the moving spring bottom plate (205) is fixedly connected with a moving spring lead-out foot (207), the top end of the base (101) is fixedly connected with a static spring sheet (3), the outer surface of the static spring sheet (3) is fixedly connected with a static contact (301), the center of the static spring sheet (3) is provided with a groove (302), the bottom end outer wall of the static spring sheet (3) is fixedly connected with a static spring bottom plate (303), and the side bottom end of the static spring bottom plate (303) is fixedly connected with a static spring lead-out foot (305).
2. A relay with high load contact according to claim 1, characterized in that: The static spring sheet (3) and the moving spring sheet (2) are oppositely arranged relative to the base (101), the transverse diameter of the moving spring lead-out foot (207) is 1.3 mm, the transverse diameter of the static spring lead-out foot (305) is 1.3 mm, the moving spring lead-out foot (207) and the static spring lead-out foot (305) are oppositely distributed relative to the base (101), and the transverse diameter of the opening window (204) is 0.5 mm.
3. A relay with high load contact according to claim 1, characterized in that: The moving contact (201) is fixed to the center of the outer wall of the moving spring sheet (2), the outer surface diameter of the moving contact (201) is 3.2 mm, the outer surface of the moving contact (201) is covered with a composite layer, the vertical thickness of the surface composite layer of the moving contact (201) is 0.35 mm, and the composite layer is made of silver indium tin oxide.
4. A relay with high load contact according to claim 1, characterized in that: The static contact (301) is fixed to the center of the outer wall of the static spring sheet (3), the outer surface diameter of the static contact (301) is 3.2 mm, the outer surface of the static contact (301) is covered with a composite layer, the vertical thickness of the surface composite layer of the static contact (301) is 0.35 mm, and the composite layer is made of silver indium tin oxide.
5. A relay with high load contact as defined in claim 1, characterized in that: The moving spring sheet (2) and the static spring sheet (3) are made of chromium zirconium copper material, and the outer surfaces of the moving spring sheet (2) and the static spring sheet (3) are covered with silver material.
6. A relay with high load contact according to claim 1, characterized in that: One side of the relay body (1) is fixedly connected with a fixed block (102), the outer surface of the fixed block (102) is fixedly connected with a clamping shaft (103), the outer walls of the moving spring sheet (2) are fixedly connected with supports (202), and the supports (202) are arranged in a group, clamping grooves (203) are arranged between the supports (202), and the clamping grooves (203) are clamped and connected to the outer wall of the clamping shaft (103).
7. A relay with high load contact as defined in claim 1, characterized in that: First grooves (206) are arranged on both sides of the moving spring bottom plate (205), the first grooves (206) are triangular, and second grooves (304) are arranged on both sides of the static spring bottom plate (303).