Low-height horizontal electromagnetic relay

Abstract

The application discloses a low-height horizontal electromagnetic relay, which comprises a static spring part and a base. The base is provided with a plug hole for inserting a static spring sheet. The static spring sheet comprises a static contact connecting part and a static spring leading part which are substantially parallel to each other, and a transition part which is integrally and bently connected between the lower end of the static contact connecting part and the upper end of the static spring leading part. The upper part of the static spring leading part is in clearance fit in the plug hole of the base, and the transition part is attached to the inner surface of the base, and the static contact is correspondingly fit with the moving contact. A certain gap is further arranged between the bottom surface of the transition part and the inner surface of the base. The upper part of the static spring leading part is further extended upwardly and provided with a fixing part. The structure can ensure the realization of low height of the product, and the heat of the static spring sheet can be timely dissipated to the outside of the product, so that the temperature rise in the relay is avoided, and the normal work of the relay is affected.

Description

Technical Field

[0001] This invention relates to the field of relay technology, and in particular to a low-height horizontal electromagnetic relay. Background Technology

[0002] Electromagnetic relays are electromechanical components widely used in various household appliances, office equipment, and industrial control. An electromagnetic relay typically consists of a contact portion, a magnetic circuit portion, and a base. The contact portion includes a moving spring portion and a stationary spring portion. When the magnetic circuit portion is working, the armature in the magnetic circuit portion drives the moving spring portion to move, causing the moving contact of the moving spring portion to contact (i.e., the contact is closed) or separate (i.e., the contact is open) with the stationary contact of the stationary spring portion. One existing electromagnetic relay, primarily used in the automotive industry, requires a low overall height. To reduce this height, existing technologies design the magnetic circuit coil horizontally and the stationary spring bends and attaches it to the inner surface of the base (e.g., Chinese patent CN209434108U). While this design reduces the overall height, the stationary spring is typically inserted into the mounting hole of the base with a tight fit and directly adheres to the inner surface. This prevents the heat generated by the stationary spring during relay operation from dissipating quickly, causing internal temperature rise and affecting normal operation. Furthermore, to reduce overall height, the contact points of the moving and stationary contacts are very close to the inner surface of the base. This causes metal spatter generated during contact operation to accumulate on the inner surface, reducing the creepage distance when the contacts disconnect and impacting the relay's lifespan. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a low-height horizontal electromagnetic relay. Through structural improvements, on the one hand, the heat of the stationary reed can be dissipated to the outside of the product in a timely manner while ensuring the product remains low in height, so as to avoid the internal temperature rise of the relay and affect its normal operation; on the other hand, sufficient creepage distance can be ensured when the moving and stationary contacts are disconnected, thereby ensuring the service life of the relay.

[0004] The technical solution adopted by this invention to solve its technical problem is: a low-height horizontal electromagnetic relay, comprising a moving spring part, a stationary spring part, a magnetic circuit part, and a base; the magnetic circuit part includes a coil, an iron core, a yoke, and an armature that cooperate with each other, and the coil is horizontally mounted on the base; the moving spring part includes a moving contact; the stationary spring part includes a stationary spring plate and a stationary contact fixed to the stationary spring plate; the base is provided with a socket for inserting the stationary spring plate; the stationary spring plate includes a stationary contact connecting part and a stationary spring lead-out part that are generally parallel to each other, and an integrally bent connection to the stationary contact. The transition section is located between the lower end of the point connection part and the upper end of the stationary spring lead-out part. The upper part of the stationary spring lead-out part is fitted into the insertion hole of the base with a gap, and the transition section is attached to the inner surface of the base, so that the stationary contact and the moving contact are correspondingly engaged. A certain gap is also provided between the bottom surface of the transition section and the inner surface of the base, so as to form an exhaust channel for dissipating the heat generated by the stationary spring sheet outside the base. The upper part of the stationary spring lead-out part also extends upward to provide a fixing part, so as to strengthen the fixing strength between the stationary spring sheet and the base through the engagement with the base.

[0005] The movable spring portion also includes a movable spring plate; the movable contact is fixed to the movable spring plate, and the movable spring plate is also connected to the yoke and the armature respectively.

[0006] The transition section is generally horizontally positioned, and a protrusion is provided between the bottom surface of the transition section and the inner surface of the base, so that the gap is formed between the bottom surface of the transition section and the inner surface of the base.

[0007] The protrusion is a first protrusion that extends downwards and is integrally formed on the bottom surface of the transition portion.

[0008] The protrusion is an upwardly protruding second protrusion integrally formed on the inner surface of the base.

[0009] On the inner surface of the base, below the corresponding mating position of the stationary contact and the moving contact, there is a recess of a certain area to collect metal spatter generated when the moving and stationary contacts are working, so as to ensure the creepage distance when the moving and stationary contacts are disconnected.

[0010] A fixing part extends upward from both sides of the upper width of the stationary spring lead-out part. The outer side of the fixing part exceeds the side of the width of the stationary spring lead-out part, so that the bottom end of the fixing part forms a first step relative to the stationary spring lead-out part. The top of the fixing part has a third protrusion outward. A locking platform is provided above the insertion hole of the base at the position corresponding to the fixing part of the stationary spring. The bottom surface of the third protrusion of the fixing part abuts against the locking platform of the base. The first step of the fixing part is locked at the bottom edge of the insertion hole of the base by riveting.

[0011] The insertion hole of the base extends upward to the card plate on both sides corresponding to the upper width of the static spring lead-out portion; at least one fourth protrusion is provided on the outer side of the fixing portion, and the fixing portion is interference-fitted with the insertion hole of the base in the width direction of the static spring through the fourth protrusion.

[0012] The transition portion and the fixed portion are provided with a notch at the junction; the transition portion extends toward the stationary contact connection portion and is provided with a through hole; and the through hole is trapezoidal in shape.

[0013] The movable spring is bent into an approximate L-shape through a first bending portion. One side of the L-shape of the movable spring is fixed to the yoke, and the other side of the L-shape of the movable spring is fixed to the armature, with the armature engaging at the blade edge of the yoke. The movable contact is fixed at the end of the other side of the L-shape of the movable spring. The armature is provided with a hook to hook onto the blade edge of the yoke. One side of the L-shape of the movable spring has a through hole extending from the first bending portion toward the end of the side of the L-shape. The other side of the L-shape of the movable spring is also provided with a second bending portion and a third bending portion, respectively. A reinforcing plate is also provided in the through hole. The reinforcing plate is located at the midpoint between the second bending portion and the projection position of the hook of the armature on one side of the L-shape of the movable spring.

[0014] The coil includes a coil frame and enameled wire wound around the winding window of the coil frame. The iron core fits into the through hole of the coil frame. The yoke is approximately L-shaped. One side of the L-shape of the yoke is fixed to one side of the L-shape of the movable spring and correspondingly fits into the winding window of the coil frame. The other side of the L-shape of the yoke corresponds to the flange of the coil frame. The other side of the L-shape of the yoke also extends to provide a pin as the lead-out end of the movable spring. The upper part of the pin is inserted and fixed to the base. The top of the pin has a bent part to allow space for the flange of the coil frame. The top of the pin has a fifth protrusion on both sides, and a second step for riveting is provided below the fifth protrusion.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The present invention employs a method in which the upper part of the static spring lead-out portion of the static spring sheet is fitted into the insertion hole of the base with a single-sided gap, and a certain gap is also provided between the bottom surface of the transition portion of the static spring sheet and the inner surface of the base, so as to form an exhaust channel for dissipating the heat generated by the static spring sheet to the outside of the base by utilizing the gap and the gap; the upper part of the static spring lead-out portion is also provided with a fixing portion extending upward, so as to strengthen the fixing strength between the static spring sheet and the base through the cooperation with the base. This invention addresses this issue by providing gaps and clearances between the stationary spring and the inner surface of the base, as well as between the stationary spring and the socket of the base. This allows heat from the stationary spring and the moving and stationary contacts inside the relay to dissipate from the inner surface of the base and the gaps in the socket to the outside of the base, preventing overheating inside the relay and ensuring its normal operation. However, since the stationary spring and the socket of the base have a single-sided clearance fit (meaning only three of the four sides of the socket are in contact with the stationary spring), this can lead to an unstable fixation between the stationary spring and the socket, and the stationary spring may tilt, resulting in misalignment of the moving and stationary contacts. This invention addresses this by providing a fixing part extending upwards from the upper part of the stationary spring lead-out portion. This fixing part, in conjunction with the base, strengthens the fixation between the stationary spring and the socket of the base, while also preventing the stationary spring from tilting.

[0017] 2. This invention incorporates a recessed groove of a certain area on the inner surface of the base, below the corresponding mating positions of the stationary and moving contacts. This structure allows the recessed groove to collect metal spatter generated during the operation of the moving and stationary contacts, ensuring sufficient creepage distance when the moving and stationary contacts disconnect.

[0018] 3. This invention incorporates a notch at the junction of the transition portion and the fixed portion of the stationary spring; and a through hole extending from the transition portion towards the stationary contact connection portion; the through hole is trapezoidal in shape. This structure enhances the flexibility of the stationary spring by utilizing the notch formed on both sides of the stationary contact connection portion and the through hole in the transition portion, acting as a buffer during the closing of the moving and stationary contacts, i.e., buffering the rebound of the contacts; the trapezoidal design of the through hole maximizes the area on both sides, effectively ensuring the current-carrying area of ​​the stationary spring. Because the trapezoidal hole is located at the connection point between the intermediate transition portion and the contact connection portion, the connection between the intermediate transition portion and the stationary spring lead-out portion is narrowed, resulting in low thermal conductivity of the stationary spring at low temperatures. The stationary spring remains above the ambient temperature around the contact, preventing condensation or freezing, thus preventing contact freezing.

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, the low-height horizontal electromagnetic relay of the present invention is not limited to the embodiments. Attached Figure Description

[0020] Figure 1This is an exploded view of the main body and housing of the relay according to Embodiment 1 of the present invention;

[0021] Figure 2 This is an exploded view of the main body of the relay according to Embodiment 1 of the present invention;

[0022] Figure 3 This is a front view of the main body of the relay according to Embodiment 1 of the present invention;

[0023] Figure 4 This is a side view of the main body of the relay according to Embodiment 1 of the present invention;

[0024] Figure 5 It is along Figure 4 A sectional view of line AA in the diagram;

[0025] Figure 6 This is a schematic diagram of the insertion of the stationary spring portion and the base in Embodiment 1 of the present invention;

[0026] Figure 7 This is a schematic diagram of the insertion of the stationary spring portion and the base in Embodiment 1 of the present invention (flipped at an angle);

[0027] Figure 8 This is a cross-sectional view along one direction of the static spring portion and the base in Embodiment 1 of the present invention;

[0028] Figure 9 This is a cross-sectional view along another direction showing the static spring portion and the base cooperating in Embodiment 1 of the present invention;

[0029] Figure 10 This is a schematic diagram of the assembly of the movable spring and the armature according to Embodiment 1 of the present invention;

[0030] Figure 11 This is a schematic diagram of the cooperation between the yoke, the base, and the coil in Embodiment 1 of the present invention;

[0031] Figure 12 This is a three-dimensional structural schematic diagram of the stationary spring sheet according to Embodiment 1 of the present invention;

[0032] Figure 13 This is a three-dimensional structural schematic diagram of the stationary spring sheet according to Embodiment 1 of the present invention (flipped at an angle);

[0033] Figure 14 This is a three-dimensional structural schematic diagram of the stationary spring sheet according to Embodiment 1 of the present invention (flipped at another angle);

[0034] Figure 15 This is a three-dimensional structural diagram of the base according to Embodiment 1 of the present invention;

[0035] Figure 16 This is a side view of the base according to Embodiment 1 of the present invention;

[0036] Figure 17 It is along Figure 16 A sectional view of the BB line in the middle;

[0037] Figure 18 This is a three-dimensional structural schematic diagram of the movable spring in Embodiment 1 of the present invention;

[0038] Figure 19 This is a three-dimensional structural schematic diagram of the movable spring in Embodiment 1 of the present invention (flipped at an angle);

[0039] Figure 20 This is a three-dimensional structural schematic diagram of the yoke of Embodiment 1 of the present invention;

[0040] Figure 21 This is a three-dimensional structural schematic diagram of the yoke of Embodiment 1 of the present invention (flipped at one angle);

[0041] Figure 22 This is a schematic diagram of the insertion of the stationary spring portion and the base in Embodiment 2 of the present invention (flipped at an angle);

[0042] Figure 23 This is a cross-sectional view of the static spring portion and the base in embodiment two of the present invention. Detailed Implementation

[0043] Example 1

[0044] See Figures 1 to 21As shown, a low-height horizontal electromagnetic relay of the present invention includes a moving spring portion 1, a stationary spring portion, a magnetic circuit portion 3, a base 4, and a housing 5. The magnetic circuit portion 3 includes a coil 31, an iron core 32, a yoke 33, and an armature 34 that cooperate with each other. The coil 31 is horizontally mounted on the base 4. The moving spring portion 1 includes a moving spring plate 12 and a moving contact 11 fixed to the moving spring plate. The moving spring plate 12 is connected to the yoke 33 and the armature 34 respectively. The stationary spring portion includes a stationary spring plate 2 and a stationary contact 20 fixed to the stationary spring plate 2. The base 4 is provided with an insertion hole 41 for inserting the stationary spring plate. The stationary spring plate 2 includes a stationary contact connecting portion 21 and a stationary spring lead-out portion 23 that are generally parallel to each other, and an integrally bent connection between the lower end of the stationary contact connecting portion and the upper end of the stationary spring lead-out portion. The transition portion 22; the upper part of the static spring lead-out portion 23 is fitted into the insertion hole 41 of the base with a gap, so that the transition portion 22 is attached to the inner surface 42 of the base 4 and the static contact 20 and the moving contact 11 are correspondingly engaged. When the static spring lead-out portion 23 and the insertion hole 41 are fitted with a gap, three of the four mating surfaces can be in contact with each other while one surface is left with a gap. Of course, other mating methods are also possible. A certain gap S is also provided between the bottom surface of the transition portion 22 and the inner surface 42 of the base 4, so as to form an exhaust channel for discharging the heat generated by the static spring sheet outside the base by using the gap S and the gap. The upper part of the static spring lead-out portion 23 also extends upward to provide a fixing portion 24, so as to strengthen the fixing strength between the static spring sheet 2 and the base 4 by the engagement of the fixing portion 24 and the base 4.

[0045] In this embodiment, the transition portion 22 is generally horizontally arranged, and a protrusion is provided between the bottom surface of the transition portion 22 and the inner surface 42 of the base 4, so that the gap S is formed between the bottom surface of the transition portion 22 and the inner surface 42 of the base 4.

[0046] In this embodiment, the protrusion is an upwardly protruding second protrusion 43 integrally formed on the inner surface of the base 4.

[0047] In this embodiment, a recessed groove 44 of a certain area is provided on the inner surface 42 of the base 4 below the corresponding mating position of the stationary contact 20 and the moving contact 11, so as to collect the metal spatter generated when the moving and stationary contacts are working and ensure the creepage distance when the moving and stationary contacts are disconnected.

[0048] In this embodiment, a fixing part 24 extends upward from both sides of the upper width of the static spring lead-out part 23. The outer side of the fixing part 24 exceeds the side of the width of the static spring lead-out part 23, so that the bottom end of the fixing part 24 forms a first step 241 relative to the static spring lead-out part. The top of the fixing part 24 is provided with a third protrusion 242. A retaining plate 45 is provided above the insertion hole 41 of the base 4 at the position corresponding to the fixing part of the static spring. The bottom surface of the third protrusion 242 of the fixing part abuts against the retaining plate 45 of the base. The first step 241 of the fixing part 24 is secured to the bottom edge of the insertion hole 41 of the base 4 by riveting.

[0049] In this embodiment, the insertion hole 41 of the base 4 extends upward to the card plate 45 on both sides corresponding to the upper part of the static spring lead-out portion 23; at least one fourth protrusion 243 is provided on the outer side of the fixing portion 24, and the fixing portion 24 is in an interference fit with the insertion hole 41 of the base 4 in the width direction of the static spring through the fourth protrusion 243.

[0050] In this embodiment, a notch 25 is provided at the junction of the transition portion 22 and the fixing portion 24; a through hole 26 is provided on the transition portion 22 extending toward the static contact connection portion; and the through hole 26 is trapezoidal in shape.

[0051] In this embodiment, the movable spring 12 is bent into an approximately L-shaped form by the first bending portion 121. One side 122 of the L-shape of the movable spring 12 is fixed to the yoke 33, and the other side 123 of the L-shape of the movable spring 12 is fixed to the armature 34, with the armature 34 engaging at the blade edge of the yoke 33. The movable contact 11 is fixed to the end of the other side 123 of the L-shape of the movable spring 12. The armature 34 is provided with a hook 341 to hook onto the blade edge of the yoke 33. The L-shaped side 122 of the movable spring 12 has a through hole 124 extending from the first bend 121 towards the end of the L-shaped side 122. The L-shaped side 122 and the other L-shaped side 123 of the movable spring are also provided with a second bend 125 and a third bend 126, respectively. A reinforcing plate 127 is also provided in the through hole 124. The reinforcing plate 127 is located at the midpoint between the second bend 125 and the projection position of the armature hook 341 on one side of the L-shaped movable spring. The reinforcing plate 127 is used to strengthen the second bend 125, making the two sides of the through hole 124 parallel to the blade edge of the yoke 33, facilitating the adjustment of the fit between the armature hook 341 and the blade edge of the yoke 33, thereby improving the reliability of the contact.

[0052] In this embodiment, the coil 31 includes a coil frame 311 and enameled wire 312 wound around the winding window of the coil frame. The iron core 32 is fitted into the through hole of the coil frame 311. The yoke 33 is approximately L-shaped. One side 331 of the L-shape of the yoke 33 is fixed to one side 122 of the L-shape of the movable spring 12 and is correspondingly fitted into the winding window of the coil frame 311. The other side 332 of the L-shape of the yoke 33 is correspondingly fitted into the flange 313 of the coil frame 311. 32 also extends to provide a pin 333 as the lead-out end of the moving spring. The upper part of the pin 33 is inserted and fixed to the base 4. The base 4 is provided with a corresponding insertion hole 46. The top of the pin 333 is provided with a bending part 334 to make way for the flange 313 of the coil frame. The top of the pin 333 is provided with a fifth protrusion 335 on both sides. The fifth protrusion 335 is provided with a second step 336 for riveting below it. The fifth protrusion 335 is stuck on the top of the insertion hole 46. After riveting the second step 336, it is stuck on the bottom of the insertion hole 46.

[0053] The present invention discloses a low-height horizontal electromagnetic relay, wherein the upper part of the static spring lead-out portion 23 of the static spring 2 is fitted into the insertion hole 41 of the base with a single-sided gap, and a certain gap S is provided between the bottom surface of the transition portion 22 of the static spring and the inner surface 42 of the base 4, so as to form an exhaust channel for dissipating the heat generated by the static spring outside the base by utilizing the gap and the gap; the upper part of the static spring lead-out portion 23 is further provided with a fixing portion 24 extending upward, so as to strengthen the fixing strength between the static spring 2 and the base 4 by the cooperation of the fixing portion 24 and the base 4. This invention, through the provision of gaps and clearances between the inner surfaces of the stationary spring 2 and the base 4, and between the stationary spring 2 and the socket 41 of the base, allows heat from the stationary spring and the moving and stationary contacts inside the relay to dissipate from the inner surface of the base and the gaps in the socket to the outside of the base, preventing the relay from overheating and affecting its normal operation. However, since the stationary spring and the socket of the base are in a clearance fit (e.g., a single-sided clearance fit), meaning that only three of the four sides of the socket are in contact with the stationary spring, this can lead to an unstable fixation between the stationary spring and the socket of the base, and the stationary spring may tilt, resulting in misalignment of the moving and stationary contacts. This invention addresses this by providing a fixing part extending upwards from the upper part of the stationary spring lead-out portion. This fixing part, in conjunction with the base, strengthens the fixation between the stationary spring and the socket of the base, while also preventing the stationary spring from tilting.

[0054] This invention discloses a low-height horizontal electromagnetic relay, in which a recessed groove 44 of a certain area is provided on the inner surface 42 of the base 4 below the corresponding mating position of the stationary contact and the moving contact. This structure of the invention allows the recessed groove 44 to collect metal spatter generated during the operation of the moving and stationary contacts, ensuring the creepage distance when the moving and stationary contacts are disconnected.

[0055] This invention discloses a low-height horizontal electromagnetic relay, which incorporates a notch 25 at the junction of the transition portion 22 and the fixing portion 24 of the stationary spring 2; and a through hole 26 extending from the transition portion towards the stationary contact connection portion; the through hole 26 is trapezoidal in shape. This structure utilizes the notch formed on both sides of the stationary contact connection portion and the through hole in the transition portion to improve the flexibility of the stationary spring, providing a buffering effect when the moving and stationary contacts close, i.e., buffering the rebound of the contacts; the trapezoidal design of the through hole maximizes the area on both sides, effectively ensuring the current-carrying area of ​​the stationary spring. Because the trapezoidal hole is located at the connection point between the intermediate transition portion and the contact connection portion, the connection point between the intermediate transition portion and the stationary spring lead-out portion is narrowed, resulting in low thermal conductivity of the stationary spring at low temperatures. The stationary spring remains above the ambient temperature around the contacts, preventing condensation or freezing, thus preventing contact freezing.

[0056] Example 2

[0057] See Figures 22 to 23 As shown, the low-height horizontal electromagnetic relay of the present invention differs from that of Embodiment 1 in that the protrusion is a first protrusion 221 that is integrally formed on the bottom surface of the transition portion 22 and extends downward.

[0058] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A low-height horizontal electromagnetic relay, comprising a moving spring portion, a stationary spring portion, a magnetic circuit portion, and a base; the magnetic circuit portion includes a coil, an iron core, a yoke, and an armature that cooperate with each other, the coil being horizontally mounted on the base; the moving spring portion includes a moving contact; the stationary spring portion includes a stationary spring plate and a stationary contact fixed to the stationary spring plate; the base is provided with an insertion hole for inserting the stationary spring plate; the stationary spring plate includes a generally parallel stationary contact connecting portion and a stationary spring lead-out portion, and a transition portion integrally bent and connected between the lower end of the stationary contact connecting portion and the upper end of the stationary spring lead-out portion; characterized in that: The upper part of the stationary spring lead-out portion is fitted into the insertion hole of the base with a gap, and the transition portion is attached to the inner surface of the base, so that the stationary contact and the moving contact correspond to each other. A certain gap is also provided between the bottom surface of the transition portion and the inner surface of the base, so as to form an exhaust channel for dissipating the heat generated by the stationary spring from the base. The upper part of the stationary spring lead-out portion also extends upward to provide a fixing portion, so as to strengthen the fixing strength between the stationary spring and the base through the cooperation with the base. A notch is provided at the junction of the transition portion and the fixing portion. A through hole is provided in the direction of the stationary contact connection portion of the transition portion. The through hole is trapezoidal in shape, so that the connection position between the intermediate transition portion and the stationary spring lead-out portion is narrowed. In the inner surface of the base, below the corresponding position of the stationary contact and the moving contact, a certain area of ​​groove is provided to collect metal spatter generated when the moving and stationary contacts are working, so as to ensure the creepage distance when the moving and stationary contacts are disconnected.

2. The low-height horizontal electromagnetic relay according to claim 1, characterized in that: The movable spring portion also includes a movable spring plate; the movable contact is fixed to the movable spring plate, and the movable spring plate is also connected to the yoke and the armature respectively.

3. The low-height horizontal electromagnetic relay according to claim 1, characterized in that: The transition section is generally horizontally positioned, and a protrusion is provided between the bottom surface of the transition section and the inner surface of the base, so that the gap is formed between the bottom surface of the transition section and the inner surface of the base.

4. The low-height horizontal electromagnetic relay according to claim 3, characterized in that: The protrusion is a downwardly protruding first protrusion integrally formed on the bottom surface of the transition portion; or, the protrusion is an upwardly protruding second protrusion integrally formed on the inner surface of the base.

5. The low-height horizontal electromagnetic relay according to claim 1, 2, or 3, characterized in that: The upper part of the stationary spring lead-out portion has a fixing portion extending upward on both sides of its width. The outer side of the fixing portion exceeds the width of the stationary spring lead-out portion, so that the bottom end of the fixing portion forms a first step relative to the stationary spring lead-out portion. The top of the fixing portion has a third protrusion extending outward. A retaining plate is provided above the insertion hole of the base at the position corresponding to the fixing portion of the stationary spring. The bottom surface of the third protrusion of the fixing portion abuts against the retaining plate of the base. The first step of the fixing portion is secured to the bottom edge of the insertion hole of the base by riveting.

6. The low-height horizontal electromagnetic relay according to claim 5, characterized in that: The insertion hole of the base extends upward to the card plate on both sides corresponding to the upper width of the static spring lead-out portion; at least one fourth protrusion is provided on the outer side of the fixing portion, and the fixing portion is interference-fitted with the insertion hole of the base in the width direction of the static spring through the fourth protrusion.

7. The low-height horizontal electromagnetic relay according to claim 2, characterized in that: The movable spring is bent into an approximate L-shape through a first bending portion. One side of the L-shape of the movable spring is fixed to the yoke, and the other side of the L-shape of the movable spring is fixed to the armature, with the armature engaging at the blade edge of the yoke. The movable contact is fixed at the end of the other side of the L-shape of the movable spring. The armature is provided with a hook to hook onto the blade edge of the yoke. One side of the L-shape of the movable spring has a through hole extending from the first bending portion toward the end of the side of the L-shape. The other side of the L-shape of the movable spring is also provided with a second bending portion and a third bending portion, respectively. A reinforcing plate is also provided in the through hole. The reinforcing plate is located at the midpoint between the second bending portion and the projection position of the hook of the armature on one side of the L-shape of the movable spring.

8. The low-height horizontal electromagnetic relay according to claim 2, characterized in that: The coil includes a coil frame and enameled wire wound around the winding window of the coil frame. The iron core fits into the through hole of the coil frame. The yoke is approximately L-shaped. One side of the L-shape of the yoke is fixed to one side of the L-shape of the movable spring and correspondingly fits into the winding window of the coil frame. The other side of the L-shape of the yoke corresponds to the flange of the coil frame. The other side of the L-shape of the yoke also extends to provide a pin as the lead-out end of the movable spring. The upper part of the pin is inserted and fixed to the base. The top of the pin has a bent part to allow space for the flange of the coil frame. The top of the pin has a fifth protrusion on both sides, and a second step for riveting is provided below the fifth protrusion.

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