A coil holder with adjustable height position and its high-voltage DC relay

Abstract

The present invention discloses a coil holder with adjustable height position and a high-voltage DC relay thereof. The coil holder includes retaining walls at the upper and lower ends and a winding column connected vertically between the upper and lower retaining walls; the upper and lower retaining walls are respectively in a substantially flat plate shape and are square; the upper and lower retaining walls and the winding column enclose a winding window surrounding the winding column; at least one convex portion for supporting and adjusting the height position is respectively provided at positions close to the edges on opposite sides of the bottom surface of the lower retaining wall. Through structural improvement, the present invention can adjust the height position of the coil holder, avoiding the drawbacks caused by the size mismatch between the internal parts including the coil holder and the iron cup in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of relays, and particularly to a coil bobbin with adjustable height position and a high-voltage DC relay thereof. Background Art

[0002] A relay is an electronic control device. It has a control system (also known as an input circuit) and a controlled system (also known as an output circuit), and is usually applied to an automatic control circuit. It is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays roles such as automatic regulation, safety protection, and circuit conversion in the circuit.

[0003] In a square epoxy-sealed high-voltage DC relay of the prior art, usually, internal parts such as a coil bobbin, the enameled wire wound around the coil bobbin, a yoke iron plate, and an inner support cover are installed in the inner cavity of a square iron cup, and the coil bobbin is located at the bottom of the iron cup. The iron cup has an opening facing upward. Due to the tolerance of the depth of the iron cup, when the overall height dimension of the internal parts is smaller than the depth dimension matching the iron cup, there is a certain gap between the bottom surface of the coil bobbin and the inner side of the bottom wall of the iron cup, which will cause a downward force on the internal parts and affect the performance of the coil bobbin. When the overall height dimension of the internal parts is larger than the depth dimension matching the iron cup, it will affect the fit between the inner support cover and the iron cup. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a coil bobbin with adjustable height position and a high-voltage DC relay thereof. Through structural improvement, the height position of the coil bobbin can be adjusted, avoiding the drawbacks caused by the size mismatch between the internal parts including the coil bobbin and the iron cup in the prior art.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a coil bobbin with adjustable height position, including retaining walls at the upper and lower ends and a winding column connected vertically between the upper and lower retaining walls; the upper and lower retaining walls are respectively in a substantially flat plate shape and are square; the upper and lower retaining walls and the winding column enclose a winding window surrounding the winding column; at least one convex portion for supporting and adjusting the height position is respectively provided at positions close to the edges on opposite sides of the bottom surface of the lower retaining wall.

[0006] The convex portion is a convex bud, and two convex buds are respectively provided at positions close to the edges on opposite sides of the bottom surface of the lower retaining wall; the four convex buds are respectively located at positions close to the four corners of the bottom surface of the lower retaining wall corresponding to the coil bobbin.

[0007] The convex portion is a rib.

[0008] The winding column is circular; on the side of the upper and lower retaining walls facing the winding window, a platform also protrudes.

[0009] The platform is in a circular ring shape surrounding the winding column and corresponds to the thickness dimension of the enameled wire wound on the coil bobbin.

[0010] The edge of the platform further extends to be provided with an inclined surface outside the area of the thickness dimension of the enameled wire wound on the coil bobbin.

[0011] A high-voltage DC relay includes an inner support cover, an iron cup and a coil bobbin; the iron cup is square and is provided with an inner cavity with an upward opening; the coil bobbin is connected below the inner support cover; the peripheral edge of the top end of the inner support cover is provided with an edge portion protruding in the horizontal direction; the side wall of the inner support cover and the coil bobbin are adapted to be in the inner cavity of the iron cup, and the coil bobbin is at the bottom position of the iron cup; the edge portion of the inner support cover is placed on the top surface of the opening portion of the iron cup; the coil bobbin includes retaining walls at the upper and lower ends and a winding column connected in an upright state between the upper and lower retaining walls; the upper and lower retaining walls are respectively in a substantially flat plate shape and are square; at least one convex portion is respectively provided at positions close to the edges on the opposite sides of the bottom surface of the lower retaining wall, and the at least two convex portions respectively abut against the inner side surface of the bottom wall of the iron cup, so that when a gap appears between the edge portion of the inner support cover and the top surface of the opening portion of the iron cup, by pressing down, under the action of the convex portions, the middle of the lower retaining wall of the coil bobbin sinks, and the edges of the lower retaining wall turn upwards, so as to close the gap between the edge portion of the inner support cover and the top surface of the opening portion of the iron cup.

[0012] The upper and lower retaining walls and the winding column enclose a winding window surrounding the winding column; a coil lead connection portion is provided on the upper surface of the upper retaining wall.

[0013] The convex portion is a convex bud, and two convex buds are respectively provided at positions close to the edges on the opposite sides of the bottom surface of the lower retaining wall; the four convex buds are respectively at positions close to the four corners of the bottom surface of the lower retaining wall of the coil bobbin corresponding to them.

[0014] The convex portion is a rib.

[0015] The winding column is circular; on the surface of the upper and lower retaining walls facing the winding window, a platform is further protruding.

[0016] The platform is in a circular ring shape surrounding the winding column and corresponds to the thickness dimension of the enameled wire wound on the coil bobbin.

[0017] The edge of the platform further extends to be provided with an inclined surface outside the area of the thickness dimension of the enameled wire wound on the coil bobbin.

[0018] Compared with the prior art, the beneficial effect of the present invention is:

[0019] 1. In the present invention, at least one convex portion is respectively provided at positions close to the edges on the opposite sides of the bottom surface of the lower retaining wall. The at least two convex portions respectively abut against the inner side surface of the bottom wall of the iron cup. When a gap appears between the edge portion of the inner support cover and the top surface of the opening of the iron cup, by pressing down, under the action of the convex portions, the middle of the lower retaining wall of the coil bobbin sinks, and the edge of the lower retaining wall warps upward, so that the gap between the edge portion of the inner support cover and the top surface of the opening of the iron cup is closed. By adding convex portions capable of adjusting the height position of the coil bobbin at the bottom of the coil bobbin, the present invention avoids the drawbacks caused by the size mismatch between the internal parts including the coil bobbin and the iron cup in the prior art.

[0020] 2. In the present invention, on the surfaces of the upper and lower retaining walls facing the winding window, a platform is further protrudingly provided. The platform is provided as an annular shape surrounding the winding column and corresponds to the thickness dimension of the enameled wire wound on the coil bobbin. In addition, the edge of the platform is further extended with an inclined surface outside the area corresponding to the thickness dimension of the enameled wire wound on the coil bobbin. With this structure of the present invention, the inclined surface at the edge of the platform can be used to compensate for the deformation amount when the upper and lower retaining walls are concave. On the one hand, it can ensure the tight arrangement of the enameled wire, and on the other hand, it can ensure that the enameled wire will not be scratched during winding.

[0021] The present invention will be further described in detail below in conjunction with the drawings and embodiments; however, a coil bobbin with an adjustable height position and a high-voltage DC relay of the present invention are not limited to the embodiments. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the coil bobbin of the embodiment of the present invention;

[0023] Figure 2 is a schematic structural diagram of the coil bobbin of the embodiment of the present invention (flipped by an angle);

[0024] Figure 3 is a front view of the coil bobbin of the embodiment of the present invention;

[0025] Figure 4 is Figure 3 an enlarged schematic view of part A in

[0026] Figure 5 is a schematic diagram of a partial structure of the high-voltage DC relay of the embodiment of the present invention;

[0027] Figure 6 is Figure 5 an enlarged schematic view of part B in

[0028] Figure 7 is a schematic diagram of the state of the coil bobbin of the embodiment of the present invention when it is pressed;

[0029] Figure 8Schematic diagram of the cooperation of the inner support cover, bobbin and iron cup in the comparative example Figure 1 ;

[0030] Figure 9 Schematic diagram of the cooperation of the inner support cover, bobbin and iron cup in the comparative example Figure 2 ;

[0031] Figure 10 Schematic diagram of the cooperation of the inner support cover, bobbin and iron cup in the embodiment of the present invention Figure 1 ;

[0032] Figure 11 Schematic diagram of the cooperation of the inner support cover, bobbin and iron cup in the embodiment of the present invention Figure 2 。 Detailed implementation manners

[0033] Embodiment

[0034] Refer to Figures 1 to 4 As shown, a bobbin with adjustable height position of the present invention, the bobbin 1 includes retaining walls 11, 12 at the upper and lower ends and a winding column 13 connected in an upright state between the upper and lower retaining walls 11, 12; the upper and lower retaining walls 11, 12 are respectively in a substantially flat plate shape and are square; the upper and lower retaining walls 11, 12 and the winding column 13 enclose a winding window 14 surrounding the winding column; a coil pin connection portion 15 is provided on the upper surface of the upper retaining wall 11, and at least one convex portion for supporting and adjusting the height position is respectively provided at positions close to the edges on the opposite sides of the bottom surface of the lower retaining wall 12.

[0035] In this embodiment, the convex portion is a convex bud 16, and two convex buds 16 are respectively provided at positions close to the edges on the opposite sides of the bottom surface of the lower retaining wall, and there are four in total on both sides; the four convex buds 16 are respectively located at positions close to the four corners of the bottom surface of the lower retaining wall 12 corresponding to the bobbin 1.

[0036] In this embodiment, the winding column 13 is circular; on the surface of the upper and lower retaining walls 11, 12 facing the winding window, a platform 17 also protrudes.

[0037] In this embodiment, the platform 17 is in a circular ring shape surrounding the winding column 13 and corresponds to the thickness dimension of the enameled wire wound on the bobbin.

[0038] In this embodiment, the edge of the platform 17 also extends outwards to a region outside the thickness dimension of the enameled wire wound on the bobbin to form an inclined surface 171.

[0039] The convex portion in this embodiment is a convex bud 16. Of course, the convex portion can also be a rib.

[0040] Refer to Figures 1 to 7As shown, a high-voltage DC relay of the present invention comprises an inner support cover 2, an iron cup 3 and a coil frame 1; the iron cup 2 is square and has an inner cavity with an opening facing upward; the inner support cover 2 has an inner cavity with an opening facing downward; the coil frame 1 is connected to the lower part of the inner support cover 2, and a guide plate 4 and a yoke iron plate 5 are further provided between the inner support cover 2 and the top surface of the coil frame 1, and a magnetic steel 6 is further installed in the guide plate 4; the high-voltage DC relay also comprises a static contact lead-out terminal 71, a moving reed 72, a push rod component 73, a moving iron core 74 and other components, and two static contact lead-out terminals ... The end 71 is fixed to the top of the inner support cover 2, the bottom ends of the two static contact lead-out ends 71 ​​are in the inner cavity of the inner support cover 2, the moving spring 72 is accommodated in the inner cavity of the inner support cover 2, the two ends of the moving spring 72 correspond to the bottom ends of the two static contact lead-out ends 71 ​​respectively, the upper end of the push rod component 73 is connected to the moving spring 72, and the lower end of the push rod component 73 is connected to the moving iron core 74; the peripheral edge of the top end of the inner support cover 2 is provided with an edge portion 21 protruding in the horizontal direction; the side wall of the inner support cover 2 and the coil frame 1 are adapted to the iron cup 3, and the coil frame 1 is at the bottom of the iron cup 3; the edge portion 21 of the inner support cover 2 is placed on the top surface 31 of the opening of the iron cup 3; the coil frame 1 includes retaining walls 11 and 12 at the upper and lower ends and a winding column 13 connected between the upper and lower retaining walls 11 and 12 in an upright state; the upper and lower retaining walls 11 and 12 are respectively roughly flat-plate-shaped and square; at least one convex portion is respectively provided near the edge position on the opposite sides of the bottom surface of the lower retaining wall 12. In this embodiment, the convex portion is The convex buds 16 are respectively provided at the positions near the edges on the two opposite sides of the bottom surface of the lower retaining wall, and there are four convex buds 16 on both sides; the four convex buds 16 are respectively located at the positions near the edges of the four corners of the bottom surface of the lower retaining wall of the coil frame, so that when a gap appears between the edge portion 21 of the inner support cover 2 and the top end surface 31 of the opening portion of the iron cup 3, the convex buds 16 are pressed downward, and the convex buds are subjected to the reaction force F from the bottom wall of the iron cup 3, and the middle of the lower retaining wall 12 of the coil frame 1 sinks, and the edge of the lower retaining wall 12 is upwardly tilted (such as Figure 7 The gap between the edge portion 21 of the inner support cover 2 and the top end surface 13 of the opening of the iron cup is closed.

[0041] In this embodiment, the upper and lower retaining walls 11 , 12 and the winding post 13 form a winding window 14 surrounding the winding post; a coil pin connecting portion 15 is provided on the upper retaining wall 11 .

[0042] In this embodiment, the winding column 13 is circular; a platform 17 is protruded from one side of the upper and lower retaining walls 11 and 12 facing the winding window.

[0043] In this embodiment, the platform 17 is in a circular ring shape surrounding the periphery of the winding pole and corresponds to the thickness of the enameled wire wound by the coil frame.

[0044] In this embodiment, a slope 171 is further provided at the edge of the platform 17 and extends beyond the area of the thickness dimension of the enameled wire wound around the bobbin.

[0045] As Figure 8 , Figure 9 shown, when there is no convex bump provided at the bottom of the bobbin 1, due to the tolerance of the depth of the iron cup 3, when the overall height dimension of the internal parts (including the inner support cover 2, the bobbin 1, etc.) is less than the depth dimension that matches the iron cup 3, there is a certain gap H1 between the bottom surface of the bobbin 1 and the inner side surface of the bottom wall of the iron cup 3, which will cause a sinking force on the internal parts and affect the performance of the bobbin. When the overall height dimension of the internal parts is greater than the depth dimension that matches the iron cup 3, a gap H2 will appear between the edge portion 21 of the inner support cover 2 and the top surface 31 of the opening portion of the iron cup 3.

[0046] As Figure 10 , Figure 11 shown, in the present invention, by providing convex bumps 16 at the bottom of the bobbin 1, when the overall height dimension of the internal parts (including the inner support cover 2, the bobbin 1, etc.) is less than the depth dimension that matches the iron cup 3, the convex bumps on the bottom surface of the bobbin 1 play a role in filling the above-mentioned gap H1, and the bottom of the bobbin 1 contacts the inner side surface of the bottom wall of the iron cup 3 through the convex bumps 16; when the overall height dimension of the internal parts is greater than the depth dimension that matches the iron cup 3, by pressing down, under the action of the convex bumps 16, the middle of the lower retaining wall 12 of the bobbin 1 sinks, the edge of the lower retaining wall 12 warps upward, and the inner support cover 2 also sinks, and the edge portion 21 of the inner support cover 2 contacts the top surface 31 of the opening portion of the iron cup 3, which is equivalent to closing the above-mentioned gap H2.

[0047] A bobbin with adjustable height position and a high-voltage DC relay thereof according to the present invention adopt at least one convex portion respectively provided at positions close to the edges on the opposite sides of the bottom surface of the lower retaining wall 12, and the convex portion is a convex bump. Four convex bumps 16 are respectively located at positions close to the edges at the four corners of the bottom surface of the lower retaining wall of the bobbin, and respectively abut against the inner side surface of the bottom wall of the iron cup 3. When a gap appears between the edge portion 21 of the inner support cover 2 and the top surface 31 of the opening portion of the iron cup 3, by pressing down, under the action of the convex bumps 16, the middle of the lower retaining wall 12 of the bobbin 1 sinks, the edge of the lower retaining wall 12 warps upward, so that the gap between the edge portion 21 of the inner support cover and the top surface of the opening portion of the iron cup is closed. By adding convex bumps capable of adjusting the height position of the bobbin at the bottom of the bobbin, the present invention avoids the drawbacks caused by the size mismatch between the internal parts including the bobbin and the iron cup in the prior art.

[0048] An adjustable-height coil holder and a high-voltage DC relay thereof according to the present invention adopt the following structure: on the side of the upper and lower retaining walls 11 and 12 facing the winding window, a platform 17 is further protrudingly provided. The platform 17 is arranged in a circular ring surrounding the winding column and corresponds to the thickness dimension of the enameled wire wound on the coil holder. And a slope 171 is further extended from the edge of the platform 17 to the area outside the thickness dimension of the enameled wire wound on the coil holder. With this structure of the present invention, the slope 171 at the edge of the platform 17 can be used to compensate for the deformation amount when the upper and lower retaining walls are concave. On the one hand, it can ensure the tight arrangement of the enameled wire, and on the other hand, it can ensure that the enameled wire will not be scratched during winding.

[0049] The above is only the preferred embodiment of the present invention and does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention by using the above-disclosed technical content, 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 embodiment according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of the protection of the technical solution of the present invention.

Claims

1. A coil holder with adjustable height position, comprising retaining walls at the upper and lower ends and a winding column connected in an upright state between the upper and lower retaining walls; the upper and lower retaining walls are respectively in a substantially flat plate shape and are square; the upper and lower retaining walls and the winding column enclose a winding window surrounding the winding column; characterized in that: At least one protrusion for supporting and adjusting the height position is respectively provided near the edge on the opposite sides of the bottom surface of the lower retaining wall. The at least two protrusions are used to respectively abut against the inner side of the bottom wall of the iron cup when the edge of the inner support cover of the high-voltage DC relay is placed on the top end surface of the opening of the iron cup of the high-voltage DC relay.

2. The coil holder with adjustable height position according to claim 1, characterized in that: The convex part is a convex bulge, and two convex bulges are respectively arranged near the edge on the opposite sides of the bottom surface of the lower retaining wall; the four convex bulges are respectively located near the edge of the four corners of the bottom surface of the lower retaining wall corresponding to the coil frame.

3. The coil holder with adjustable height position according to claim 1, characterized in that: The convex part is a rib.

4. The bobbin with adjustable height position according to claim 1 or 2 or 3, characterized in that: The winding column is circular; a platform is protruded from one side of the upper and lower retaining walls facing the winding window.

5. The coil holder with adjustable height position according to claim 4, wherein: The platform is in a circular shape surrounding the winding pole and corresponds to the thickness of the enameled wire wound by the coil frame; the edge of the platform is also provided with an inclined surface extending outside the area of ​​the thickness of the enameled wire wound by the coil frame.

6. A high-voltage DC relay, comprising an inner support cover, an iron cup and a coil holder; the iron cup is square and has an inner cavity with an upward opening; the coil holder is connected below the inner support cover; characterized in that: The circumference of the top end of the inner support cover is provided with an edge portion protruding in the horizontal direction; the side wall of the inner support cover and the coil frame are adapted to the inner cavity of the iron cup, and the coil frame is located at the bottom position of the iron cup; the edge portion of the inner support cover is placed on the top end surface of the opening of the iron cup; the coil frame includes retaining walls at the upper and lower ends and a winding column connected between the upper and lower retaining walls in an upright state; the upper and lower retaining walls are respectively roughly flat-plate-shaped and square; at least one convex portion is respectively provided near the edge position on the opposite sides of the bottom surface of the lower retaining wall, and the at least two convex portions are respectively abutted against the inner side surface of the bottom wall of the iron cup, so that when a gap appears between the edge portion of the inner support cover and the top end surface of the opening of the iron cup, by pressing down, under the action of the convex portion, the middle of the lower retaining wall of the coil frame sinks, and the edge of the lower retaining wall is upwardly tilted, so that the gap between the edge portion of the inner support cover and the top end surface of the opening of the iron cup is closed.

7. The high-voltage DC relay according to claim 6, wherein: The upper and lower retaining walls and the winding column form a winding window surrounding the winding column; a coil pin connecting portion is arranged on the upper retaining wall.

8. The high-voltage DC relay according to claim 7, wherein: The convex part is a convex bulge, and two convex bulges are respectively arranged near the edge on the opposite sides of the bottom surface of the lower retaining wall; the four convex bulges are respectively located near the edge of the four corners of the bottom surface of the lower retaining wall corresponding to the coil frame.

9. The high-voltage DC relay according to claim 7, characterized in that: The convex part is a rib.

10. The high-voltage DC relay according to claim 7, wherein: The winding column is circular; a platform is protruded from one side of the upper and lower retaining walls facing the winding window.

11. The high-voltage DC relay according to claim 10, characterized in that: The platform is in a circular shape surrounding the winding pole and corresponds to the thickness of the enameled wire wound by the coil frame; the edge of the platform is also provided with an inclined surface extending outside the area of ​​the thickness of the enameled wire wound by the coil frame.

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