A snap-on relay with consistent drop between the core pole surface and the yoke iron blade

Abstract

The present invention discloses a snap-on relay with consistent drop between the pole face of the core and the blade edge of the yoke, comprising a coil frame, a yoke and an iron core; the coil frame comprises flanges at both ends, a winding window between the flanges at both ends and an iron core mounting hole penetrating the flanges at both ends; one flange of the coil frame is provided with a first fitting end face and a second fitting end face facing outwards of the flange, and the head of the iron core is located between the first fitting end face and the second fitting end face; one side of the L-shaped yoke is attached to the second fitting end face and presses the inner side of the head of the iron core to the first fitting end face, and the first fitting end face is provided with an adjustment convex portion, and the adjustment convex portion presses the outer side of the head of the iron core to the L-shaped side of the yoke by deformation, thereby ensuring the consistency of the drop between the pole face of the core and the blade edge of the yoke. The present invention can ensure the consistency of the drop between the pole face of the core and the blade edge of the yoke, thereby ensuring the normal use of the relay.

Description

Technical Field

[0001] The invention relates to the technical field of relays, in particular to a snap-on relay with consistent drop between an iron core pole surface and a yoke iron blade. Background Art

[0002] A relay is an electronic control device that has a control system (also called an input circuit) and a controlled system (also called an output circuit). It is usually used in automatic control circuits. It is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic regulation, safety protection, and circuit conversion in the circuit. A relay in the prior art adopts a snap-on magnetic circuit structure. This snap-on relay includes a coil frame, a yoke, an iron core and a movable spring armature component. The coil frame includes flanges at both ends, a winding window between the flanges at both ends, and an iron core mounting hole that passes through the flanges at both ends. The iron core is inserted into the iron core mounting hole of the coil frame. One end of the iron core is used as a pole surface to cooperate with the armature in the movable spring armature component. The other end of the iron core is usually fixed by riveting to the yoke. The movable spring armature component is connected to the yoke and the head of the armature is matched with the blade of the yoke, thereby realizing the snap-on action of the armature toward the pole surface of the core. Since the head of the armature uses the blade of the yoke as a rotating axis to achieve snapping toward the pole surface of the core, the blade of the yoke and the pole surface of the core are required to be in a corresponding matching position, so as to ensure the normal action of the armature, that is, to ensure the consistency of the drop between the pole surface of the core and the blade of the yoke. However, in the relay of the prior art, since the other end of the iron core is fixed to the yoke by riveting, it is very easy to produce inconsistency between the pole surface of the iron core and the blade edge of the yoke, thereby affecting the normal use of the relay. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a snap-on relay with consistent drop between the core pole face and the yoke iron blade. Through structural improvement, the consistency of the drop between the core pole face and the yoke iron blade can be ensured, thereby ensuring the normal use of the relay.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a snap-on relay with a consistent drop between the pole face of an iron core and the knife edge of a yoke, comprising a coil frame, a yoke and an iron core; the coil frame comprises flanges at both ends, a winding window between the flanges at both ends and an iron core mounting hole penetrating the flanges at both ends; the yoke is bent into an L-shape through a bending portion, one side of the L-shape of the yoke fits outside one of the flanges of the coil frame, the other side of the L-shape of the yoke spans across the flanges at both ends of the coil frame, and the end face of the other side of the L-shape of the yoke is set as a knife edge; one end of the iron core is provided with a head with a size larger than that of the iron core mounting hole, and the end face of the other end of the iron core is set as the iron core pole face; the other end of the iron core is formed by the wire One of the flanges of the coil frame passes through the core mounting hole to the other flange of the coil frame; one of the flanges of the coil frame is provided with a first fitting end face and a second fitting end face facing the outside of the flange, and the first fitting end face is provided at the edge of the core mounting hole; the head of the core is located between the first fitting end face and the second fitting end face; one side of the L-shape of the yoke is attached to the second fitting end face and presses the inner side surface of the head of the core toward the first fitting end face, and the first fitting end face is provided with an adjustment protrusion, and the adjustment protrusion presses the outer side surface of the head of the core toward the L-shape side of the yoke through deformation, thereby ensuring the consistency of the drop between the core pole face and the yoke blade.

[0005] The axis of the iron core mounting hole of the coil frame is arranged horizontally.

[0006] The cross-section of the core mounting hole of the coil frame is rectangular; the core is a T-shaped structure, and the head of the core includes a middle part and extension blocks extending to both sides, and the two extension blocks of the core respectively abut against the first fitting end surface, and there are two adjustment protrusions, which are respectively located on the first fitting end surface corresponding to the positions of the two extension blocks of the core.

[0007] There are two second fitting end surfaces, which are respectively located outside the two sides of the iron core mounting hole and are farther away from the iron core mounting hole than the first fitting end surface; one side of the L-shape of the yoke is provided with an opening extending upward from the bottom end to separate one side of the L-shape of the yoke into two leg-shaped structures, and the two leg-shaped structures of the yoke are respectively attached to the second fitting end surfaces.

[0008] The second fitting end face is also provided with a convex bump, and the leg-shaped structure of the yoke is provided with a through hole. When the leg-shaped structure of the yoke is attached to the second fitting end face, the through hole of the leg-shaped structure of the yoke cooperates with the convex bump of the second fitting end face of the coil frame and is fixed by hot melt treatment.

[0009] An interference fit portion for plugging and fixing with the base of the relay is provided at the bottom of the leg-shaped structure of the yoke.

[0010] Furthermore, a magnet is clamped between the head of the core and the other side of the L-shape of the yoke, and the magnetic pole surfaces of the magnet are in contact with the head of the core and the other side of the L-shape of the yoke respectively.

[0011] The opening of the yoke extends to the bent portion of the yoke; the other side of the L-shape of the yoke extends toward the opening and is provided with a magnetic conductive portion, which is pressed on the magnetic steel.

[0012] The leg-shaped structure of the yoke is also provided with a notch facing outward at a position corresponding to the bent portion of the yoke.

[0013] The size of the magnetic steel is the same as or nearly the same as the size of the head of the core.

[0014] One of the flanges of the coil frame includes a baffle containing the iron core mounting hole and a protrusion extending from both sides of the baffle along the axial direction of the iron core mounting hole; the first fitting end face is arranged on the outer side surface of the baffle, and the second fitting end face is arranged on the front end face of the protrusion; the head of the iron core is adapted between the two protrusions.

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

[0016] 1. The present invention adopts a head with a size larger than the core mounting hole at one end of the core, and the end face of the other end of the core is set as the core pole face; the other end of the core passes through the core mounting hole from one of the flanges of the coil frame to the other flange of the coil frame; one of the flanges of the coil frame is provided with a first fitting end face and a second fitting end face facing the outside of the flange, and the first fitting end face is provided at the edge of the core mounting hole; the head of the core is located between the first fitting end face and the second fitting end face; one side of the L-shaped yoke is attached to the second fitting end face and presses the inner side of the head of the core to the first fitting end face, and the first fitting end face is provided with an adjustment convex portion, and the adjustment convex portion presses the outer side of the head of the core to the L-shaped side of the yoke by deformation. This structure of the present invention can ensure the consistency of the drop between the core pole face and the yoke blade, thereby ensuring the normal use of the relay.

[0017] 2. The present invention adopts a method of clamping a magnet between the head of the core and the other side of the L-shaped yoke, and the magnetic pole faces of the magnet are in contact with the head of the core and the other side of the L-shaped yoke respectively. In this structure of the present invention, the magnet is located between the yoke and the core in the height direction, which avoids the phenomenon that the armature transmits force to the magnet through the core during the snapping process, causing the magnet to break, because the magnet is located between the yoke and the core in the horizontal direction in the prior art snapping relay. The magnetic pole faces of the magnet of the present invention are in contact with the material surfaces of the yoke and the core, thereby avoiding the leakage of magnetic flux caused by the uneven blanking surface of the parts.

[0018] 3. The present invention adopts an L-shaped yoke with one side having an opening extending upward from the bottom to separate the L-shaped yoke into two leg-shaped structures. The present invention utilizes the opening between the two legs of the yoke to reduce the magnetic short circuit between the yoke, the magnet and the iron core, thereby improving the magnetic utilization rate. The present invention adopts a leg-shaped yoke structure, and a notch facing outward is provided at a position corresponding to the bent portion of the yoke, thereby further reducing the magnetic short circuit and improving the magnetic utilization rate. The present invention adopts an L-shaped yoke with the other side extending toward the opening and having a magnetic conductive portion, and the magnetic conductive portion is pressed on the magnet, thereby further improving the magnetic utilization rate.

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments; however, the snap-on relay of the present invention with consistent drop between the core pole surface and the yoke iron blade is not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the three-dimensional structure of an embodiment of the present invention (excluding the housing);

[0021] Figure 2 is a structural cross-sectional view of an embodiment of the present invention;

[0022] Figure 3 is an exploded schematic diagram of a partial structure of an embodiment of the present invention;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the iron core, the yoke and the movable spring armature component in the embodiment of the present invention;

[0024] Figure 5 It is a front view of the iron core, yoke and coil frame of an embodiment of the present invention;

[0025] Figure 6 is along Figure 5 The cross-sectional view of line AA in the figure;

[0026] Figure 7 is a top view of the iron core, yoke and coil frame in cooperation with each other according to an embodiment of the present invention;

[0027] Figure 8 is along Figure 7 The cross-sectional view of line BB in (excluding the terminal);

[0028] Fig. 9 is a schematic diagram of the three-dimensional structure of a coil frame according to an embodiment of the present invention;

[0029] Fig.10 Schematic diagram of the three-dimensional structure of the yoke of an embodiment of the present invention;

[0030] Fig.11 It is a schematic diagram of the three-dimensional structure of the iron core according to an embodiment of the present invention. DETAILED DESCRIPTION

[0031] Example

[0032] See also Figures 1 to 11 As shown, a snap-on relay with consistent drop between the core pole face and the yoke blade of the present invention comprises a base 1, a coil frame 2, a yoke 3, an iron core 4 and a movable spring armature component 5; the coil frame 2 comprises flanges 21, 22 at both ends, a winding window 23 between the flanges at both ends and an iron core mounting hole 24 penetrating the flanges at both ends; the yoke 3 is bent into an L-shape by a bending portion 31, one side 32 of the L-shape of the yoke fits outside one of the flanges 21 of the coil frame, the other side 33 of the L-shape of the yoke spans the flanges 21, 22 at both ends of the coil frame and its winding window 23, and the end face of the other side 33 of the L-shape of the yoke is set as a blade 331; one end of the iron core 4 is provided with a head 41 whose size is larger than the iron core mounting hole, and the end face 42 of the other end of the iron core is set as the iron core pole face; the other end of the iron core 4 is formed by the other side of the coil frame One of the flanges 21 passes through the core mounting hole 24 to the other flange 22 of the coil frame; one of the flanges 21 of the coil frame is provided with a first fitting end face 211 and a second fitting end face 212 facing the outside of the flange, and the first fitting end face 211 is provided at the edge of the core mounting hole 24; the head 41 of the core is located between the first fitting end face 211 and the second fitting end face 212; one side 32 of the L-shaped yoke is attached to the second fitting end face 212 and presses the inner side of the head 41 of the core toward the first fitting end face 211, and the first fitting end face 211 is provided with an adjustment convex portion 25, and the adjustment convex portion 25 presses the outer side of the head 41 of the core toward the L-shaped side 32 of the yoke through deformation, thereby ensuring the consistency of the drop between the core pole face 42 and the yoke blade 331. The armature 51 of the movable spring armature component 5 is fitted at the yoke blade 331.

[0033] In this embodiment, the axis of the core mounting hole 24 of the coil frame 2 is arranged horizontally.

[0034] In this embodiment, the cross-section of the core mounting hole 24 of the coil frame 2 is rectangular; the core 4 is a T-shaped structure, and the head 41 of the core includes a middle part 411 and an extension block 412 extending to both sides, and the two extension blocks 412 of the core respectively abut against the first fitting end surface 211, and there are two adjustment protrusions 25, which are respectively located on the first fitting end surface 211 corresponding to the positions of the two extension blocks 412 of the core.

[0035] In this embodiment, there are two second fitting end surfaces 212, which are respectively located outside the two sides of the core mounting hole 24 and are farther away from the core mounting hole 24 than the first fitting end surface 211; one side 32 of the L-shape of the yoke is provided with an opening 321 extending upward from the bottom end to separate the one side 32 of the L-shape of the yoke into two leg-shaped structures 322, and the two leg-shaped structures 322 of the yoke are respectively attached to the second fitting end surface 212.

[0036] In this embodiment, the second fitting end face 212 is also provided with a convex bulge 26, and the leg-shaped structure 322 of the yoke is provided with a through hole 323. When the leg-shaped structure 322 of the yoke is attached to the second fitting end face 212, the through hole 323 of the leg-shaped structure of the yoke 3 cooperates with the convex bulge 26 of the second fitting end face of the coil frame 2 and is fixed by hot melt treatment.

[0037] In this embodiment, the bottom of the leg-shaped structure 322 of the yoke is provided with an interference fit portion 324 for being plugged and fixed with the base 1 of the relay.

[0038] Furthermore, a magnet 6 is clamped between the head 41 of the core and the other side 33 of the L-shape of the yoke, and the magnetic pole surfaces of the magnet 6 are in contact with the head 41 of the core and the other side 33 of the L-shape of the yoke respectively.

[0039] Furthermore, the opening 321 of the yoke extends to the bent portion 31 of the yoke; the other side 33 of the L-shape of the yoke extends toward the opening and is provided with a magnetic conductive portion 332 , and the magnetic conductive portion 332 is pressed on the magnetic steel 6 .

[0040] In this embodiment, the leg-shaped structure 322 of the yoke is further provided with a notch 34 facing outward at a position corresponding to the bent portion 31 of the yoke.

[0041] In this embodiment, the size of the magnetic steel 6 is the same or nearly the same as the size of the head 41 of the core.

[0042] In this embodiment, one of the flanges 21 of the coil frame includes a baffle 213 including the core mounting hole and a protrusion 214 protruding from both sides of the baffle along the axial direction of the core mounting hole; the first fitting end face 211 is arranged on the outer side surface of the baffle 213, and the second fitting end face 212 is arranged on the front end face of the protrusion 214 (that is, with the axis of the core mounting hole 24 of the coil frame as the front and rear); the head 41 of the core is adapted between the two protrusions 214.

[0043] The present invention provides a snap-on relay with consistent drop between the core pole surface and the yoke iron blade, wherein one end of the core 4 is provided with a head 41 whose size is larger than the core mounting hole, and the end surface 42 of the other end of the core is set as the core pole surface; the other end of the core 4 passes through the core mounting hole 24 from the outside of one of the flanges 21 of the coil frame to the outside of another flange 22 of the coil frame; one of the flanges 21 of the coil frame is provided with a first fitting end surface 211 and a second fitting end surface 212 facing the outside of the flange 21, and the first The fitting end face 211 is arranged at the edge of the iron core mounting hole 24; the head 41 of the iron core is located between the first fitting end face 211 and the second fitting end face 212; the L-shaped side 32 of the yoke is attached to the second fitting end face 212 and presses the inner side of the head 41 of the iron core toward the first fitting end face 211, and the first fitting end face 211 is provided with an adjustment convex portion 25, and the adjustment convex portion 25 presses the outer side of the head 41 of the iron core toward the L-shaped side 32 of the yoke through deformation. This structure of the present invention can ensure the consistency of the drop between the iron core pole face 42 and the yoke blade 331, thereby ensuring the normal use of the relay.

[0044] The present invention discloses a snap-on relay with a consistent drop between the pole face of the core and the blade edge of the yoke, wherein a magnetic steel 6 is clamped between the head 41 of the core and the other side 33 of the L-shape of the yoke, and the magnetic pole faces of the magnetic steel 6 are in contact with the head 41 of the core and the other side 33 of the L-shape of the yoke, respectively. In this structure of the present invention, the magnetic steel 6 is located between the yoke 3 and the core 4 in the height direction, thereby avoiding the phenomenon that the armature transmits force to the magnetic steel through the core during the snap-on process, thereby causing the magnetic steel to break, as in the snap-on relay of the prior art, because the magnetic steel is located between the yoke and the core in the horizontal direction; the magnetic pole faces of the magnetic steel of the present invention are in contact with the material surfaces of the yoke and the core, thereby avoiding the phenomenon of magnetic leakage caused by the uneven blanking surface of the parts.

[0045] The present invention discloses a snap-on relay with a consistent drop between the pole surface of the core and the blade edge of the yoke. The yoke has an L-shaped side 32 with an opening 321 extending upward from the bottom to separate the L-shaped side of the yoke into two leg-shaped structures 322. The present invention utilizes the opening 321 between the two legs of the yoke to reduce the magnetic short circuit between the yoke, the magnet and the core, thereby improving the magnetic utilization rate. Since the yoke leg-shaped structure 322 is adopted, a notch 34 facing outward is provided at a position corresponding to the bending portion of the yoke, thereby further reducing the magnetic short circuit and improving the magnetic utilization rate. Since the other side 33 of the yoke L is extended toward the opening and provided with a magnetic conductive portion 332, the magnetic conductive portion 332 is pressed on the magnet 6, thereby further improving the magnetic utilization rate.

[0046] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above, or modify it into an equivalent equivalent embodiment without departing from the scope of the technical solution of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A snap-on relay with consistent drop between the core pole face and the yoke blade, comprising a coil frame, a yoke and a core; the coil frame comprises flanges at both ends, a winding window between the flanges at both ends and a core mounting hole penetrating the flanges at both ends; the yoke is bent into an L-shape through a bending portion, one side of the L-shape of the yoke fits outside one of the flanges of the coil frame, the other side of the L-shape of the yoke spans the flanges at both ends of the coil frame, and the end face of the other side of the L-shape of the yoke is set as a blade; one end of the core is provided with a head with a size larger than the core mounting hole, and the end face of the other end of the core is set as the core pole face; characterized in that: The other end of the iron core passes through the iron core mounting hole from the outside of one of the flanges of the coil frame to the outside of the other flange of the coil frame; one of the flanges of the coil frame is provided with a first fitting end face and a second fitting end face facing the outside of the flange, and the first fitting end face is provided at the edge of the iron core mounting hole; the head of the iron core is located between the first fitting end face and the second fitting end face; one side of the L-shape of the yoke is attached to the second fitting end face and presses the inner side surface of the head of the iron core toward the first fitting end face, and the first fitting end face is provided with an adjustment protrusion, and the adjustment protrusion presses the outer side surface of the head of the iron core toward the L-shape side of the yoke through deformation, thereby ensuring the consistency of the drop between the iron core pole face and the yoke blade.

2. The snap-on relay with consistent drop between the core pole surface and the yoke iron blade according to claim 1, characterized in that: The axis of the iron core mounting hole of the coil frame is arranged horizontally.

3. The snap-on relay with consistent drop between the core pole surface and the yoke iron blade according to claim 2, characterized in that: The cross-section of the core mounting hole of the coil frame is rectangular; the core is a T-shaped structure, and the head of the core includes a middle part and extension blocks extending to both sides, and the two extension blocks of the core respectively abut against the first fitting end surface, and there are two adjustment protrusions, which are respectively located on the first fitting end surface corresponding to the positions of the two extension blocks of the core.

4. The snap-on relay with consistent drop between the core pole surface and the yoke iron blade according to claim 3, characterized in that: There are two second fitting end surfaces, which are respectively located outside the two sides of the iron core mounting hole and are farther away from the iron core mounting hole than the first fitting end surface; one side of the L-shape of the yoke is provided with an opening extending upward from the bottom end to separate one side of the L-shape of the yoke into two leg-shaped structures, and the two leg-shaped structures of the yoke are respectively attached to the second fitting end surfaces.

5. The snap-on relay with consistent drop between the core pole surface and the yoke iron blade according to claim 4, characterized in that: The second fitting end face is also provided with a convex bump, and the leg-shaped structure of the yoke is provided with a through hole. When the leg-shaped structure of the yoke is attached to the second fitting end face, the through hole of the leg-shaped structure of the yoke cooperates with the convex bump of the second fitting end face of the coil frame and is fixed by hot melt treatment.

6. The snap-on relay with consistent drop between the core pole surface and the yoke iron blade according to claim 5, characterized in that: An interference fit portion for plugging and fixing with the base of the relay is provided at the bottom of the leg-shaped structure of the yoke.

7. The snap-on relay with consistent drop between the core pole surface and the yoke iron blade according to claim 4, characterized in that: Furthermore, a magnet is clamped between the head of the core and the other side of the L-shape of the yoke, and the magnetic pole surfaces of the magnet are in contact with the head of the core and the other side of the L-shape of the yoke respectively.

8. The snap-on relay with consistent drop between the core pole surface and the yoke iron blade according to claim 7, characterized in that: The opening of the yoke extends to the bent portion of the yoke; the other side of the L-shape of the yoke extends toward the opening and is provided with a magnetic conductive portion, which is pressed on the magnetic steel; the leg-shaped structure of the yoke is also provided with a notch facing outward at a position corresponding to the bent portion of the yoke.

9. The snap-on relay with consistent drop between the core pole surface and the yoke iron blade according to claim 7, characterized in that: The size of the magnetic steel is the same as or nearly the same as the size of the head of the core.

10. The snap-on relay with consistent drop between the core pole surface and the yoke iron blade according to claim 3, characterized in that: One of the flanges of the coil frame includes a baffle containing the iron core mounting hole and a protrusion extending from both sides of the baffle along the axial direction of the iron core mounting hole; the first fitting end face is arranged on the outer side surface of the baffle, and the second fitting end face is arranged on the front end face of the protrusion; the head of the iron core is adapted between the two protrusions.

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