Armature reed assembly and vacuum relay

Abstract

The invention discloses an armature reed assembly and a vacuum relay, and belongs to the field of vacuum relays. The armature reed assembly comprises an armature and a connecting support. The armature is provided with a mounting surface, a fixing part is arranged on the mounting surface, the connecting support is arranged on the mounting surface and comprises a support body and a connecting part, the connecting part is arranged at one end of the support body, the other end of the support body is arranged on the mounting surface, the support body is connected with the fixing part, and the fixing part supports the support body. In the embodiment of the invention, when the armature drives the bracket body to move and the bracket body drives the transmission rod to move through the connecting part, under the condition that the electromagnetic assembly applies the same force to the armature, the bracket body enables the transmission rod to be stressed more greatly, so that the normally open pressure of the normally open contact of the vacuum relay is increased.

Description

Technical Field

[0001] The present application belongs to the field of vacuum relays, and specifically relates to an armature reed assembly and a vacuum relay. Background Art

[0002] In the electrical engineering industry, relays are widely used as a control device. They have a control system (also known as an input circuit) and a controlled system (also known as an output circuit), and are usually used in automatic control circuits. Relays are actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, they play the role of automatic regulation, safety protection, and circuit conversion in the circuit.

[0003] In the related art, the connecting bracket in the high-voltage vacuum relay is connected to the transmission rod, and the connecting bracket can drive the transmission rod to move, so that the normally open contact of the high-voltage vacuum relay is closed, and the normally open pressure is provided for the normally open contact. However, in the related art, the connecting bracket drives the transmission rod to move with a small force, and thus the normally open pressure provided for the normally open contact is small. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide an armature reed assembly and a vacuum relay, which at least solve the problem of low normally open pressure provided for the normally open contacts.

[0005] In a first aspect, an embodiment of the present application provides an armature reed assembly, the armature reed assembly comprising: an armature and a connecting bracket;

[0006] The armature has a mounting surface, a fixing piece is arranged on the mounting surface, the connecting bracket is arranged on the mounting surface, the connecting bracket includes a bracket body and a connecting portion, the connecting portion is arranged at one end of the bracket body, and the other end of the bracket body is arranged on the mounting surface, the bracket body is connected to the fixing piece, and the fixing piece supports the bracket body.

[0007] Optionally, the bracket body includes a fixed portion and a non-fixed portion;

[0008] The fixing portion is connected to the fixing piece, the area between the fixing portion and the connecting portion is the non-fixing portion, the connecting portion is at least partially connected to the non-fixing portion, and the non-fixing portion is a non-bending structure.

[0009] Optionally, the fixing member comprises a fixing arm, both ends of the fixing arm are connected to the armature, and a gap exists between the fixing arm and the mounting surface except for the two ends of the fixing arm;

[0010] At least a portion of the fixing arm is connected to the bracket body.

[0011] Optionally, the fixed arm includes a first sub-arm, a second sub-arm, a third sub-arm, a fourth sub-arm and a fifth sub-arm;

[0012] The first sub-arm, the second sub-arm, the third sub-arm, the fourth sub-arm and the fifth sub-arm are connected in sequence, and one end of the first sub-arm is connected to the mounting surface, one end of the fifth sub-arm is connected to the mounting surface, the extension direction of the first sub-arm is perpendicular to the mounting surface, and the extension direction of the fifth sub-arm is perpendicular to the mounting surface;

[0013] The second sub-arm, the third sub-arm and the fourth sub-arm all have gaps with the mounting surface, and at least one of the first sub-arm, the second sub-arm, the third sub-arm, the fourth sub-arm and the fifth sub-arm is connected to the bracket body.

[0014] Optionally, the fixing member and the armature are an integral structure.

[0015] Optionally, the fixed portion includes a fixed middle portion, a first connecting arm and a second connecting arm, the fixed middle portion has a first side surface and a second side surface opposite to each other, the first side surface is connected to the first connecting arm, the second side surface is connected to the second connecting arm, and the extension direction of the first connecting arm and the extension direction of the second connecting arm are both parallel to the extension direction of the non-fixed portion;

[0016] The first connecting arm and the second connecting arm are both connected to the fixing member.

[0017] Optionally, along the direction from the bracket body to the armature, part of the first connecting arm protrudes from the bracket body, part of the second connecting arm protrudes from the bracket body, and the part of the first connecting arm protruding from the bracket body cooperates with the side of the armature, and the part of the second connecting arm protruding from the bracket body cooperates with the side of the armature.

[0018] Optionally, the first connecting arm extends to the non-fixed portion, the second connecting arm extends to the non-fixed portion, a first gap is defined between the first connecting arm and the non-fixed portion, and a second gap is defined between the second connecting arm and the non-fixed portion.

[0019] Optionally, an extension direction of the connecting portion is perpendicular to an extension direction of the bracket body.

[0020] Optionally, the armature reed assembly further comprises a support frame, and the support frame comprises: a support body;

[0021] The support body is provided with an avoidance groove, and the avoidance groove penetrates the support body along the thickness direction of the support body, the support body is mounted on the mounting surface of the armature, and the support body is located on one side of the connecting bracket;

[0022] A deformable leaf spring structure is disposed in the avoidance groove, and at least a portion of the leaf spring structure is exposed outside the avoidance groove in the thickness direction of the support body, and the leaf spring structure presses the armature.

[0023] Optionally, the leaf spring structure includes at least one first bending portion and at least one second bending portion, the bending direction of the first bending portion is opposite to the bending direction of the second bending portion, and the first bending portion and the second bending portion are alternately arranged and connected to each other;

[0024] Along the thickness direction of the support body, the support body has a first surface and a second surface opposite to each other, the first bending portion protrudes from the first surface, the second bending portion protrudes from the second surface, and the second bending portion presses the armature.

[0025] Optionally, along the first direction, side wings are respectively provided on opposite sides of the support body, and the avoidance groove is located between the two side wings, the two side wings both protrude from the support body along the thickness direction of the support body, and the two side wings protrude from the support body along the same direction, and the two side wings are used to cooperate with the armature gap.

[0026] Optionally, the armature has a supporting surface facing away from the mounting surface, the supporting surface includes a first sub-surface and a second sub-surface, an angle is formed between the first sub-surface and the second sub-surface, and the second sub-surface is parallel to the mounting surface.

[0027] Optionally, a pressing groove is provided on the mounting surface, and along the thickness direction of the armature, the pressing groove is opposite to the first sub-surface, and the leaf spring structure abuts against the bottom of the pressing groove.

[0028] Optionally, the fixing piece is perpendicular to the mounting surface, and the extending direction of the bracket body is perpendicular to the mounting surface.

[0029] In a second aspect, an embodiment of the present application provides a vacuum relay, the vacuum relay comprising an electromagnetic assembly and an armature reed assembly as described in any one of the first aspects above, the armature reed assembly comprising a support frame, the support frame comprising a support body;

[0030] The electromagnetic assembly includes a magnetic cylinder and an electromagnetic coil, wherein the electromagnetic coil is arranged in the magnetic cylinder, the armature abuts against the top wall of one end of the magnetic cylinder, and the support body is fixedly connected to the top wall of one end of the magnetic cylinder via a side wing.

[0031] In the embodiment of the present application, a connection portion is provided at one end of the bracket body of the connecting bracket, and the other end of the bracket body is provided on the mounting surface of the armature. Therefore, when the armature reed assembly provided in the embodiment of the present application is applied to the vacuum relay, the connection portion can be connected to the transmission rod of the vacuum relay, and the armature can be abutted against the electromagnetic assembly of the vacuum relay, so that when the electromagnetic assembly is energized, the electromagnetic assembly generates magnetism so that the armature rotates, and the armature can drive the bracket body to move, so that the bracket body drives the connection portion to move, so that the connection portion drives the transmission rod to move, so that the normally open contact of the vacuum relay is closed, and the normally open contact provides a normally open pressure. In addition, a fixing member is provided on the mounting surface, and the bracket body is connected to the fixing member, which is equivalent to canceling the bending structure in the related art, so that the connecting bracket maintains a large rigidity to provide a larger normally open force value, and the bracket body is further fixed in the extension direction of the bracket body by the fixing member, so that when the bracket body applies force to the transmission rod, the bracket body itself is more stable and not easy to shake, ensuring that the bracket body can stably apply force to the transmission rod. In addition, the extension direction of the bracket body is perpendicular to the mounting surface of the armature, and the bracket body is connected to the fixing part, which can better control the dimensional accuracy. That is, when the armature reed assembly is used in the vacuum relay, when the magnetic tube in the vacuum relay is used as the reference plane, the bracket body is perpendicular to the fixing part and the mounting surface, and the connection hole on the connecting bracket can be better aligned with the reference plane to control the dimensional accuracy of the parts. In addition, the extension direction of the bracket body is perpendicular to the mounting surface. Therefore, during the movement of the armature, the armature applies force to the bracket body along the extension direction of the bracket body, so that the bracket body moves in a direction perpendicular to the mounting surface and applies force to the transmission rod, avoiding the extension direction of the bracket body from tilting relative to the mounting surface, so that when the bracket plate drives the transmission rod to move, the transmission rod is subjected to the component force of the bracket body, avoiding the problem of the normally open pressure of the normally open contact being too small.

[0032] In addition, the armature spring assembly of other embodiments of the present application also has the following advantages: (1) Both ends of the fixed arm are connected to the armature, and the fixed arm has a gap with the mounting surface except for the two ends of the fixed arm, which can reduce the mass of the fixed part, which is conducive to the movement of the bracket body after the armature is subjected to force, and then the movement of the transmission rod. It can also reduce the cost of consumables while ensuring that the bracket body is supported. (2) The non-fixed part has a non-bending structure, which makes the non-fixed part more rigid, and thus makes the force provided by the non-fixed part greater, the transmission rod is subjected to greater force, and the normally open pressure of the normally open contact of the vacuum relay is greater. In addition, in actual applications, the force value can be adjusted by adjusting the size design of the non-fixed part, so that the bracket body provides the required normally open pressure. (3) The first connecting arm extends to the non-fixed portion, and the second connecting arm extends to the non-fixed portion. There is a first gap between the first connecting arm and the non-fixed portion, and there is a second gap between the second connecting portion and the non-fixed portion. In actual applications, if it is necessary to further adjust the force value of the bracket body, the width or thickness of the non-fixed portion can be adjusted to adjust the flexibility of the connecting bracket and realize the control of the force value, so that the design requirements of the normally open pressure can be met. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 A schematic diagram showing an armature provided in an embodiment of the present application;

[0035] Figure 2 A schematic diagram showing a connecting bracket provided in an embodiment of the present application;

[0036] Figure 3 A front view of a connecting bracket provided in an embodiment of the present application is shown;

[0037] Figure 4 A side view of an armature provided in an embodiment of the present application is shown;

[0038] Figure 5 A schematic diagram showing the structure of a support frame provided in an embodiment of the present application

[0039] Figure 6 A schematic diagram showing a vacuum relay provided in an embodiment of the present application;

[0040] Figure 7 One of the cross-sectional views of a vacuum relay provided in an embodiment of the present application is shown;

[0041] Figure 8 The second cross-sectional view shows a vacuum relay provided in an embodiment of the present application.

[0042] Reference numerals:

[0043] 001: normally closed contact; 002: normally open contact; 10: armature; 101: mounting surface; 102: supporting surface; 1021: first sub-surface; 1022: second sub-surface; 1011: pressing groove; 1012: connecting boss; 20: connecting bracket; 21: bracket body; 22: connecting part; 211: first side surface; 212: second side surface; 221: connecting hole; 2101: fixing part; 21011: fixing middle part; 2102: non-fixing part; 30: fixing member; 31: first sub-arm; 32: second sub-arm; 33: third sub-arm; 34: fourth sub-arm; 35: fifth sub-arm; 40: first connecting arm; 50: second connecting arm; 60: support frame; 61: supporting body; 611: avoidance groove; 610: first mounting portion; 62: spring structure; 621: first bending portion; 622: second bending portion; 63: side wing; 100: electromagnetic assembly; 110: magnetic conductive cylinder; 120: electromagnetic coil; 200: housing; 300: transmission rod. DETAILED DESCRIPTION

[0044] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0045] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] like Figures 1 to 5 As shown, the armature reed assembly includes an armature 10 and a connecting bracket 20 .

[0048] The armature 10 has a mounting surface 101, on which a fixing member 30 is arranged, and a connecting bracket 20 is arranged on the mounting surface 101. The connecting bracket 20 includes a bracket body 21 and a connecting portion 22. The connecting portion 22 is arranged at one end of the bracket body 21, and the other end of the bracket body 21 is arranged on the mounting surface 101. The bracket body 21 is connected to the fixing member 30, and the fixing member 30 supports the bracket body 21.

[0049] In the embodiment of the present application, since a connecting portion 22 is provided at one end of the bracket body 21 of the connecting bracket 20, and the other end of the bracket body 21 is provided on the mounting surface 101 of the armature 10, when the armature reed assembly provided in the embodiment of the present application is applied to a vacuum relay, the connecting portion 22 can be connected to the transmission rod 300 of the vacuum relay, and the armature 10 can be abutted against the electromagnetic component 100 of the vacuum relay, so that when the electromagnetic component 100 is energized, the electromagnetic component 100 generates magnetism so that the armature 10 rotates, and the armature 10 can drive the bracket body 21 to move, so that the bracket body 21 drives the connecting portion 22 to move, so that the connecting portion 22 drives the transmission rod 300 to move, so that the normally open contacts of the vacuum relay are closed, and normally open pressure is provided for the normally open contacts. In addition, a fixing member 30 is provided on the mounting surface 101, and the bracket body 21 is connected to the fixing member 30, so that the bracket body 21 is further fixed in the extension direction of the bracket body 21 by the fixing member 30, so that when the bracket body 21 applies force to the transmission rod 300, the bracket body 21 itself is more stable and not easy to shake, ensuring that the bracket body 21 can stably apply force to the transmission rod 300. That is, in the embodiment of the present application, by connecting the bracket body 21 with the fixing member 30, it is equivalent to that the bracket body 21 has no bending structure, so that the rigidity of the bracket body 21 is relatively large, and the fixing member 30 supports the bracket body 21, when the armature 10 drives the bracket body 21 to move, so that the bracket body 21 drives the transmission rod 300 to move through the connecting portion 22, when the electromagnetic assembly 100 applies the same force to the armature 10, the bracket body 21 can provide a larger force value, so that the transmission rod 300 is subjected to a greater force, thereby increasing the normally open pressure of the normally open contact of the vacuum relay.

[0050] In addition, in the embodiment of the present application, the fixing member 30 may be perpendicular to the mounting surface 101 , and the extending direction of the bracket body 21 is perpendicular to the mounting surface 101 .

[0051] Since the extension direction of the bracket body 21 is perpendicular to the mounting surface 101, during the movement of the armature 10, the armature 10 applies force to the bracket body 21 along the extension direction of the bracket body 21, so that the bracket body 21 moves in a direction perpendicular to the mounting surface 101 and applies force to the transmission rod 300, thereby preventing the extension direction of the bracket body 21 from tilting relative to the mounting surface 101, so that when the bracket body 21 drives the transmission rod 300 to move, the transmission rod 300 is subjected to the force component of the bracket body 21, thereby avoiding the problem of the normally open pressure of the normally open contact being small. In addition, the fixing member 30 can be perpendicular to the mounting surface 101, and the dimensional accuracy can be better controlled, that is, when the armature reed assembly is applied in a vacuum relay, when the magnetic tube 110 in the vacuum relay is used as the reference plane, the fixing member 30 is vertically arranged on the mounting surface 101, and the bracket body 21 is also perpendicular to the fixing member 30 and the mounting surface 101, and the connection hole on the connecting bracket 20 can be better aligned with the reference plane to control the dimensional accuracy of the parts.

[0052] In the related art, the connecting bracket is connected to the mounting surface 101 of the armature 10, and the connecting bracket is inclined relative to the mounting surface 101, that is, the connecting bracket is bent relative to the mounting surface 101, so that the rigidity of the connecting bracket is relatively small, and the connecting bracket is connected to the transmission rod 300, so that when the armature 10 drives the connecting frame to move, the connecting frame will drive the transmission rod 300 to move toward the direction of the armature 10, but the connecting frame is inclined relative to the mounting surface 101, so that the actual force exerted on the transmission rod 300 is the component force of the connecting frame, so that the transmission rod 300 is subjected to less force, resulting in a smaller normally open pressure of the normally open contact of the vacuum relay. In the embodiment of the present application, the bracket body 21 is connected to the fixing part 30, which is equivalent to canceling the bending structure in the related art, so that the rigidity of the bracket body 21 is relatively large, and the fixing part 30 supports the bracket body 21, so that the armature 10 drives the bracket body 21 to move, so that when the bracket body 21 drives the transmission rod 300 to move, the transmission rod 300 is subjected to the complete force of the bracket body 21, that is, it is not subjected to the component force of the bracket body 21. Therefore, when the armature 10 is subjected to the same force from the electromagnetic assembly 100, the force applied by the bracket body 21 in the embodiment of the present application to the transmission rod 300 is greater than the force applied by the connecting frame to the transmission rod 300 in the related art. Therefore, the bracket body 21 in the embodiment of the present application can increase the normally open pressure of the normally open contact of the vacuum relay.

[0053] In addition, in the embodiment of the present application, when the bracket body 21 is set on the mounting surface 101 of the armature 10, the bracket body 21 can be welded to the mounting surface 101 of the armature 10. Of course, the bracket body 21 can also be set on the mounting surface 101 of the armature 10 in other ways, for example, the bracket body 21 is connected to the mounting surface 101 by bolts. For another example, the bracket body 21 is not connected to the mounting surface 101, but the bracket body 21 is set on the mounting surface 101 through the fixing member 30. In this regard, the embodiment of the present application is not limited here.

[0054] In addition, in some embodiments, the bracket body 21 includes a fixed portion 2101 and a non-fixed portion 2102; the fixed portion 2101 is connected to the fixing member 30, the area between the fixed portion 2101 and the connecting portion 22 is the non-fixed portion 2102, the connecting portion 22 is at least partially connected to the non-fixed portion 2102, and the non-fixed portion 2102 has a non-bending structure.

[0055] Since the connection part 22 is connected to the non-fixed part 2102, after the connection part 22 is connected to the transmission rod 300, force is applied to the connection part 22 through the non-fixed part 2102, and then force is applied to the transmission rod 300. The non-fixed part 2102 is a non-bending structure, so that the non-fixed part 2102 has a larger rigidity, and then the force provided by the non-fixed part 2102 is larger, and the transmission rod 300 is subjected to a greater force, so that the normally open pressure of the normally open contact 002 of the vacuum relay is larger. In addition, in actual applications, the force value can be adjusted by adjusting the size design of the non-fixed part 2102, so that the bracket body 21 provides the required normally open pressure.

[0056] It should be noted that the size of the non-fixed portion 2102 includes the width and thickness of the non-fixed portion 2102 .

[0057] In addition, in the embodiment of the present application, the non-bending structure refers to a plate structure extending in the same direction.

[0058] In addition, in the embodiment of the present application, the fixed portion 2101 is a region formed after being connected to the fixing member 30, and the fixed portion 2101 is an immovable region to stably support the non-fixed portion 2101. Figure 3 As shown, Figure 3 The area encircled in the middle square dotted frame is the fixed middle part 21011. Figure 3 Another portion enclosed by a dotted line frame is the fixing portion 2101.

[0059] In addition, in some embodiments, the fixing member 30 includes a fixing arm, both ends of which are connected to the armature 10 , and a gap exists between the fixing arm and the mounting surface 101 except for the two ends of the fixing arm; at least part of the fixing arm is connected to the bracket body 21 .

[0060] Since both ends of the fixed arm are connected to the armature 10, and there is a gap between the fixed arm and the mounting surface 101 except for the two ends of the fixed arm, the mass of the fixed part 30 can be made smaller, and the fixed part 30 is prevented from being a block structure or a plate structure, which leads to an increase in the mass of the fixed part 30, and then leads to the problem that when the electromagnetic assembly 100 in the vacuum relay applies force to the armature 10, the armature 10 is not easy to move due to the large mass of the fixed part 30. In addition, at least part of the fixed arm is connected to the bracket body 21, so that the bracket body 21 can be supported by the fixed arm, ensuring that the bracket body 21 is relatively stable when the bracket body 21 drives the transmission rod 300 to move. That is, by connecting both ends of the fixed arm to the mounting surface 101, and there is a gap between the fixed arm and the mounting surface 101 except for the two ends, it can not only ensure that the bracket body 21 is supported, so that the bracket body 21 is relatively stable, but also the mass of the fixed part 30 can be reduced, which is conducive to the armature 10 driving the bracket body 21 to move after the force is applied, and then driving the transmission rod 300 to move. In addition, there is a gap between the fixing arm and the mounting surface 101 except for the two ends of the fixing arm, which can also reduce the cost of consumables while ensuring that the bracket body 21 is supported.

[0061] In addition, when the fixed arm is an integrally formed structure, when processing the fixed arm, only one armature plate can be used to directly cut out the fixed arm and fold it, which can avoid multiple processing steps and also reduce consumables. In addition, the fixed arm is an integrally formed structure, which can also make the fixed arm have better connection strength.

[0062] In addition, in some embodiments, Figure 1 As shown, the fixed arm includes a first sub-arm 31, a second sub-arm 32, a third sub-arm 33, a fourth sub-arm 34 and a fifth sub-arm 35; the first sub-arm 31, the second sub-arm 32, the third sub-arm 33, the fourth sub-arm 34 and the fifth sub-arm 35 are connected in sequence, and one end of the first sub-arm 31 is connected to the mounting surface 101, one end of the fifth sub-arm 35 is connected to the mounting surface 101, the extension direction of the first sub-arm 31 is perpendicular to the mounting surface 101, and the extension direction of the fifth sub-arm 35 is perpendicular to the mounting surface 101; the second sub-arm 32, the third sub-arm 33 and the fourth sub-arm 34 all have a gap with the mounting surface 101, and at least one of the first sub-arm 31, the second sub-arm 32, the third sub-arm 33, the fourth sub-arm 34 and the fifth sub-arm 35 is connected to the bracket body 21.

[0063] Since one end of the first sub-arm 31 is connected to the mounting surface 101, one end of the fifth sub-arm 35 is connected to the mounting surface 101, the extension direction of the first sub-arm 31 is perpendicular to the mounting surface 101, and the extension direction of the fifth sub-arm 35 is perpendicular to the mounting surface 101, it is equivalent to that the first sub-arm 31 and the fifth sub-arm 35 in the fixed arm are connected to the mounting surface 101, and the second sub-arm 32, the third sub-arm 33 and the fourth sub-arm 34 all have gaps with the mounting surface 101, so that the mass of the fixing member 30 can be effectively reduced, and the number of parts connected to the bracket body 21 on the fixed arm can be increased, that is, at least one of the first sub-arm 31, the second sub-arm 32, the third sub-arm 33, the fourth sub-arm 34 and the fifth sub-arm 35 can be connected to the bracket body 21, so that the bracket body 21 can be connected to the fixed arm conveniently, and the bracket body 21 can be better supported.

[0064] It should be noted that the third sub-arm 33 can be connected to the bracket body 21, which is equivalent to the bracket body 21 being smaller in size and connected to only one sub-arm. The second sub-arm 32, the third sub-arm 33 and the fourth sub-arm 34 can also be connected to the bracket body 21 at the same time, which is equivalent to the bracket body 21 being larger in size and connected to three sub-arms. Of course, the first sub-arm 31, the second sub-arm 32, the third sub-arm 33, the fourth sub-arm 34 and the fifth sub-arm 35 can also be connected to the bracket body 20 at the same time. This embodiment of the present application is not limited here.

[0065] Of course, in the embodiment of the present application, the fixed arm may also include only one sub-arm, in which case the shape of the fixed arm may be arcuate or semicircular. The fixed arm may also include six sub-arms, in which case the six sub-arms are connected in sequence. The specific shape of the fixed arm is not limited in the embodiment of the present application.

[0066] In addition, in some embodiments, the fixing member 30 and the armature 10 are an integrated structure. Through such a configuration, the strength of the fixing member 30 and the armature 10 can be improved, thereby ensuring that the fixing member 30 has a better supporting effect on the bracket body 21. The fixing member 30 and the armature 10 can be directly cast into an integrated structure through a die-casting process or a casting process.

[0067] It should be noted that when the fixing member 30 includes a fixing arm, the fixing arm includes a first sub-arm 31, a second sub-arm 32, a third sub-arm 33, a fourth sub-arm 34 and a fifth sub-arm 35, the fixing arm and the armature 10 can be directly cast into an integrated structure through a die-casting process or a casting process.

[0068] Of course, when the fixing member 30 includes a fixing arm, the two ends of the fixing arm can also be fixed to the armature 10 by welding, and the two ends of the fixing arm can also be connected to the armature 10 by connecting members such as bolts and pins. In this regard, the embodiment of the present application does not limit this. Among them, the two ends of the fixing arm can be connected to the mounting surface 101 of the armature 10, and of course, the two ends of the fixing arm can also be connected to the side of the armature 10, and this embodiment of the present application does not limit this.

[0069] In addition, in the embodiment of the present application, the fixing member 30 may also be a plate structure, or the fixing member 30 may also be a block structure. The specific shape of the fixing member 30 is not limited in the embodiment of the present application.

[0070] In addition, in some embodiments, Figure 2 and Figure 3 As shown, the fixing portion 2101 includes a fixing middle portion 21011, a first connecting arm 40 and a second connecting arm 50. The fixing middle portion 21011 has a first side surface 211 and a second side surface 212 relative to each other. The first side surface 211 is connected to the first connecting arm 40, and the second side surface 212 is connected to the second connecting arm 50. The extension direction of the first connecting arm 40 and the extension direction of the second connecting arm 50 are both parallel to the extension direction of the bracket body 21; the first connecting arm 40 and the second connecting arm 50 are both connected to the fixing member 30.

[0071] Since the extension direction of the first connecting arm 40 and the extension direction of the second connecting arm 50 are both parallel to the extension direction of the bracket body 21, it is equivalent to that the extension direction of the first connecting arm 40 and the extension direction of the second connecting arm 50 are both perpendicular to the mounting surface 101. In addition, the first connecting arm 40 and the second connecting arm 50 are both connected to the fixing member 30, which can further make the bracket body 21 and the fixing member 30 firmly connected, thereby improving the stability of the bracket body 21.

[0072] In addition, along the direction from the bracket body 21 to the armature 10, part of the first connecting arm 40 protrudes from the bracket body 21, part of the second connecting arm 50 protrudes from the bracket body 21, and part of the first connecting arm 40 protruding from the bracket body 21 cooperates with the side of the armature 10, and part of the second connecting arm 50 protruding from the bracket body 21 cooperates with the side of the armature 10.

[0073] Through such a setting, it is equivalent to the first connecting arm 40 and the second connecting arm 50 clamping the armature 10, so that the armature 10 cooperates with the first connecting arm 40 and the second connecting arm 50 respectively, so that the bracket body 21 can be further connected to the armature 10 through the first connecting arm 40 and the second connecting arm 50, ensuring that the bracket body 21 is more stable relative to the armature 10. In addition, when it is necessary to cooperate the connecting bracket 20 with the armature 10, the protruding part of the first connecting arm 40 and the protruding part of the second connecting wall 50 can make it easier to find the correct position and cooperate with the armature 10, that is, the part of the first connecting arm 40 protruding from the bracket body 21 cooperates with the side of the armature 10, and the part of the second connecting arm 50 protruding from the bracket body 21 cooperates with the side of the armature 10, so as to achieve better alignment welding fixation later.

[0074] It should be noted that when the fixing member 30 includes a fixing arm, and the fixing arm includes a first sub-arm 31, a second sub-arm 32, a third sub-arm 33, a fourth sub-arm 34, and a fifth sub-arm 35, the first sub-arm 31 is connected to the first connecting arm 40, and the fifth sub-arm 35 is connected to the second connecting arm 50. The first sub-arm 31 can be connected to the first connecting arm 40 by welding, or by connecting members such as bolts and pins, and the fifth sub-arm 35 can be connected to the second connecting arm 50 by welding, or by connecting members such as bolts and pins.

[0075] Of course, in the embodiment of the present application, the non-fixed portion 2102 may also be partially connected to the fixing member 30 to form a fixation.

[0076] In addition, in some embodiments, Figure 2 As shown, the first connecting arm 40 extends to the non-fixed portion 2102, the second connecting arm 50 extends to the non-fixed portion 2102, there is a first gap between the first connecting arm 40 and the non-fixed portion 2102, and there is a second gap between the second connecting portion 22 and the non-fixed portion 2102. Through such a setting, it is equivalent to that the width of the bracket body 21 is less than the distance from the first connecting arm 40 to the second connecting arm 50, and the width of the bracket body 21 is the distance from the first side 211 to the second side 212, so that the first connecting arm 40 is connected to the first side 211, and the second connecting arm 50 is connected to the second side 212, which leads to the problem of increasing the mass of the parts on the armature 10. In addition, the first connecting arm 40 and the second connecting arm 50 are both connected to the fixed arm, which can play a role in fixing the bracket body 21. In addition, in practical applications, if it is necessary to further adjust the force value of the bracket body 21, the width or thickness of the non-fixed portion 2102 can be adjusted to adjust the flexibility of the connecting bracket 20, and the force value can be controlled, so that the design requirements of the normally open pressure can be met.

[0077] In addition, in some embodiments, Figure 4As shown, the armature 10 has a support surface 102 facing away from the mounting surface 101 , the support surface 102 includes a first sub-surface 1021 and a second sub-surface 1022 , there is an angle between the first sub-surface 1021 and the second sub-surface 1022 , and the second sub-surface 1022 is parallel to the mounting surface 101 .

[0078] Since there is an angle between the first sub-surface 1021 and the second sub-surface 1022, and the second sub-surface 1022 is parallel to the mounting surface 101, when the electromagnetic assembly 100 of the vacuum relay is energized to attract the armature 10, the second sub-surface 1022 can be abutted against the electromagnetic assembly 100, and the second sub-surface 1022 and the electromagnetic assembly 100 can be in close contact. When the electromagnetic assembly 100 is de-energized, the first sub-surface 1021 abuts against the electromagnetic assembly 100, so that the armature 10 can move relative to the electromagnetic assembly 100, so that the armature 10 can make the bracket body 21 drive the transmission rod 300 to move through the connecting part 22, so that the vacuum relay can switch between normally open and normally closed. That is, by setting an angle between the first sub-surface 1021 and the second sub-surface 1022, and the second sub-surface 1022 being parallel to the mounting surface 101, it can be ensured that the armature 10 is in contact with the electromagnetic assembly 100, and the magnetic gap of the magnetic circuit can be guaranteed by the angle between the first sub-surface 1021 and the second sub-surface 1022, so that the magnetic gap of the vacuum relay is stable and the consistency of the magnetic gap is improved, thereby facilitating the vacuum relay to switch between normally open and normally closed.

[0079] In addition, in some embodiments, Figure 5 As shown, the armature spring assembly also includes a support frame 60, and the support frame 60 includes: a support body 61; an avoidance groove 611 is arranged on the support body 61, and the avoidance groove 611 penetrates the support body 61 along the thickness direction of the support body 61, and the support body 61 is installed on the armature 10; a deformable spring structure 62 is arranged in the avoidance groove 611, and at least part of the spring structure 62 is exposed from the avoidance groove 611 in the thickness direction of the support body 61, and the spring structure 62 squeezes the armature 10.

[0080] Since an avoidance groove 611 is provided on the support body 61, and the avoidance groove 611 penetrates the support body 61 along the thickness direction of the support body 61, the avoidance groove 611 is equivalent to forming an installation space, so that a deformable spring structure 62 can be arranged in the installation space, that is, a deformable spring structure 62 is arranged in the avoidance groove 611, and at least part of the spring structure 62 is exposed in the avoidance groove 611 in the thickness direction of the support body 61, so that the spring structure 62 abuts against the armature 10 and applies force to the armature 10, so that the armature 10 is pressed, and the spring structure 62 is deformable to avoid the large rigidity of the tail bulge of the support frame 60, and after the armature spring assembly is applied to the vacuum relay, the deformable characteristic of the spring structure 62 can reduce the operating voltage of the vacuum relay, thereby avoiding the problem of large operating voltage of the vacuum relay.

[0081] It should be noted that, in the embodiment of the present application, the material of the reed structure 62 can be metal, and it is sufficient to ensure that the reed structure 62 is deformable. For example, the material of the reed structure 62 is copper.

[0082] In addition, in the embodiment of the present application, the leaf spring structure 62 may be connected to the groove wall of the avoidance groove 102. Of course, the leaf spring structure 62 may also be disconnected from the groove wall of the avoidance groove 102. This embodiment of the present application does not limit this.

[0083] In addition, in some embodiments, Figure 5 As shown, the spring structure 62 may include at least one first bending portion 621 and at least one second bending portion 622, the bending direction of the first bending portion 621 is opposite to the bending direction of the second bending portion 622, the first bending portion 621 and the second bending portion 622 are alternately arranged and interconnected; along the thickness direction of the support body 61, the support body 61 has a first surface and a second surface opposite to each other, the first bending portion 621 protrudes from the first surface, the second bending portion 622 protrudes from the second surface, and the second bending portion 622 squeezes the armature 10.

[0084] Since the bending direction of the first bending portion 621 is opposite to the bending direction of the second bending portion 622, the first bending portion 621 and the second bending portion 622 are alternately arranged and connected to each other, so the first bending portion 621 and the second bending portion 622 can be deformed due to the bending effect. In addition, the first bending portion 621 protrudes from the first surface of the support body 61, and the second bending portion 622 protrudes from the second surface of the support body 61, so that when the support body 61 is installed on the armature 10, the part of the second bending portion 622 exposed in the avoidance groove 611 can be abutted against the armature 10, and the second bending portion 622 can apply force to the armature 10. That is, by providing the first bending portion 621 and the second bending portion 622, the deformation of the spring structure 62 can be facilitated, and it is ensured that the spring structure 62 applies force to the armature 10.

[0085] It should be noted that the number of the first bending portions 621 and the number of the second bending portions 622 can be set according to actual needs. For example, when the number of the first bending portions 621 and the number of the second bending portions 622 are both 1, at this time, the first bending portion 621 and the second bending portion 622 are equivalent to forming an S-shaped structure; for another example, when the number of the first bending portions 621 is 2 and the number of the second bending portions 622 is 2, at this time, the first bending portion 621 and the second bending portion 622 are equivalent to forming a wavy structure. The number of the first bending portions 621 and the number of the second bending portions 622 are not limited in the embodiment of the present application. Among them, in order to facilitate processing and avoid the large size of the support frame 60, the number of the first bending portions 621 and the number of the second bending portions 622 can be set to 1.

[0086] In addition, one end of the first bent portion 621 can be connected to the groove wall of the avoidance groove 611, which can ensure that the leaf spring structure 62 is connected to the groove wall of the avoidance groove 611, so that the leaf spring structure 62 is connected to the groove wall of the avoidance groove 611, thereby preventing the leaf spring structure 62 from being separated from the avoidance groove 611 when the leaf spring structure 62 abuts against the armature 10. Of course, the first bent portion 321 may not be connected to the groove wall of the avoidance groove 611.

[0087] In addition, along the first direction X, side wings 63 are respectively provided on the opposite sides of the support body 61, and the avoidance groove 611 is located between the two side wings 63. The two side wings 63 protrude from the support body 61 along the thickness direction of the support body 61, and the two side wings 63 protrude from the support body 61 along the same direction, and the two side wings 63 cooperate with the armature 10.

[0088] Since the two side wings 63 both protrude from the support body 61 along the thickness direction of the support body 61, and the two side wings 63 protrude from the support body 61 along the same direction, after the support body 61 is installed on the armature 10, one side wing 63 is located on one side of the armature 10, and the other side wing 63 is located on the other side of the armature 10, so that the two side wings 63 will cooperate with the armature 10, so that in the direction from one side wing 63 to the other side wing 63, the two side wings 63 limit the support body 61, thereby avoiding the problem of the support body 61 shaking relative to the armature 10 in the direction from one side wing 63 to the other side wing 63.

[0089] In addition, in the embodiment of the present application, a pressing groove 1011 can be further provided on the mounting surface 101 of the armature 10, and the plane where the bottom of the pressing groove 1011 is located can be parallel to the first sub-surface 1021, so that the spring structure 62 can be pressed in the pressing groove 1011, that is, the armature 10 is pressed by the spring structure 62, so that when the electromagnetic assembly 100 of the vacuum relay is energized, the electromagnetic assembly 100 attracts the armature 10 so that the second sub-surface 1022 of the armature 10 abuts against the electromagnetic assembly 100; when the electromagnetic assembly 100 of the vacuum relay is powered off, the spring structure can press the armature 10 so that the first sub-surface 1021 of the armature 10 abuts against the electromagnetic assembly 100, and when the spring structure 62 presses the armature 10, the pressing point of the spring structure 62 pressing the armature 100 is consistent each time, so that after the electromagnetic assembly 100 is powered off, the armature 10 is subjected to a stable squeezing force of the spring structure 62.

[0090] In addition, in the embodiment of the present application, along the thickness direction of the armature 10, the pressing groove 1011 is opposite to the first sub-surface 1021, and the leaf spring structure 62 abuts against the bottom of the pressing groove 1011. The pressing groove 1011 is opposite to the first sub-surface 1021, which is equivalent to the position where the pressing member applies force to the armature 10 is opposite to the first sub-surface 1021, so that when the electromagnetic assembly 100 of the vacuum relay is powered off, the pressing member applies force to the armature 10 to ensure that the first sub-surface 1021 contacts the top wall of one end of the electromagnetic assembly 100.

[0091] In addition, in the embodiment of the present application, there may be a gap between the support frame 60 and the connecting frame 20, which is equivalent to the support frame 60 and the connecting frame 20 being separated from each other. Of course, the support frame 60 may also be connected to the connecting frame 20. In addition, a connecting boss 1012 may be provided on the mounting surface 101, and the connecting boss 1012 is connected to the support frame 60.

[0092] In addition, in some embodiments, Figure 2 As shown, the extending direction of the connection part 22 is perpendicular to the extending direction of the bracket body 21. With such an arrangement, when the bracket body 21 moves, the bracket body 21 can better drive the transmission rod 300 to move through the connection part 22.

[0093] It should be noted that a connection hole 221 may be provided on the connection portion 22 , and the connection portion 22 is connected to the transmission rod 300 through the connection hole 221 .

[0094] In addition, in some embodiments, the support body 61 has a first mounting portion 610 except for the position of the avoidance groove 611, and the first mounting portion 610 is connected to the armature 10, the spring structure 62 is located on the first side of the first mounting portion 610, and the connecting frame 20 is located on the second side of the first mounting portion 610, and the first side is opposite to the second side. Through such a setting, it is equivalent to the spring structure 62 being located on the same side of the fixed position of the first mounting portion 610 on the armature 10 and the fixed position of the connecting frame 20 on the armature 10, that is, it is equivalent to the spring structure 62 being located on the same side of the fixed end of the armature 10 fixing the first mounting portion 610 and the fixed end of the connecting frame 20, so that the spring structure 62 is located on the same side of the two fixed ends of the armature 10, so that compared with the U-shaped bend set between the two fixed ends in the related art, the armature 10 spring assembly in the present application can effectively prevent the armature 10 from moving back and forth. The armature spring assembly in the present application can effectively prevent the armature 10 from moving forward and backward, that is, even if the spring structure 62 is deformed, it will not affect the armature 10 from moving forward and backward. In addition, the side wing 63 is fixed to the top wall of one end of the magnetic tube 110, so that the side wing 63 can further make the entire assembly integrated, preventing the armature 10 from moving forward and backward, and preventing the entire assembly from moving forward and backward.

[0095] The present application embodiment provides a vacuum relay, such as Figures 6 to 8 As shown, the vacuum relay includes an electromagnetic assembly 100 and an armature reed assembly in any of the above embodiments; the armature 10 abuts against the electromagnetic assembly 100 .

[0096] It should be noted that the vacuum relay may also include a shell 200, the normally open contact 002 and the normally closed contact 001 may be arranged in the shell 200, the electromagnetic assembly 100 may include a magnetic tube 110 and an electromagnetic coil 120, the electromagnetic coil 120 is arranged in the magnetic tube 110, the armature 10 is in contact with the top wall of one end of the magnetic tube 110, the support body 61 is fixedly connected to the top wall of one end of the magnetic tube 110 through the side wing 63, that is, the side wing 63 is fixed to the top wall of one end of the magnetic tube 110, the transmission rod 300 is arranged in the shell 200, and the transmission rod 300 is connected to the connecting part 22. When the electromagnetic coil 120 is energized, the electromagnetic coil 120 generates magnetism, which causes the armature 10 to move. The second sub-surface 1022 of the armature 10 abuts against the top wall of one end of the magnetic tube 110. At the same time, the transmission rod 300 moves to the normally open contact 002, so that the vacuum relay is normally open. When the electromagnetic coil 120 is de-energized, the armature 10 resets. Since the first sub-surface 1021 of the armature 10 abuts against the outer wall of one end of the magnetic tube 110, the transmission rod 300 moves to the normally closed contact 001, so that the vacuum relay is normally closed.

[0097] It should be noted that the normally open pressure in the embodiment of the present application is the pressure that can close the normally open contact 002 and maintain the contact closed state, and the normally closed pressure in the embodiment of the present application is the pressure that can close the normally closed contact 001 and maintain the contact closed state.

[0098] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0099] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An armature spring assembly, characterized in that: The armature reed assembly comprises: an armature and a connecting bracket; The armature has a mounting surface, a fixing piece is arranged on the mounting surface, the connecting bracket is arranged on the mounting surface, the connecting bracket includes a bracket body and a connecting portion, the connecting portion is arranged at one end of the bracket body, and the other end of the bracket body is arranged on the mounting surface, the bracket body is connected to the fixing piece, and the fixing piece supports the bracket body.

2. The armature reed assembly according to claim 1, characterized in that: The bracket body includes a fixed portion and a non-fixed portion; The fixing portion is connected to the fixing piece, the area between the fixing portion and the connecting portion is the non-fixing portion, the connecting portion is at least partially connected to the non-fixing portion, and the non-fixing portion is a non-bending structure.

3. The armature reed assembly according to claim 1, characterized in that: The fixing member comprises a fixing arm, both ends of the fixing arm are connected to the armature, and a gap exists between the fixing arm and the mounting surface except for the two ends of the fixing arm; At least a portion of the fixing arm is connected to the bracket body.

4. The armature reed assembly according to claim 3, characterized in that: The fixed arm includes a first sub-arm, a second sub-arm, a third sub-arm, a fourth sub-arm and a fifth sub-arm; The first sub-arm, the second sub-arm, the third sub-arm, the fourth sub-arm and the fifth sub-arm are connected in sequence, and one end of the first sub-arm is connected to the mounting surface, one end of the fifth sub-arm is connected to the mounting surface, the extension direction of the first sub-arm is perpendicular to the mounting surface, and the extension direction of the fifth sub-arm is perpendicular to the mounting surface; The second sub-arm, the third sub-arm and the fourth sub-arm all have gaps with the mounting surface, and at least one of the first sub-arm, the second sub-arm, the third sub-arm, the fourth sub-arm and the fifth sub-arm is connected to the bracket body.

5. The armature reed assembly according to claim 1, characterized in that: The fixing member and the armature are an integrated structure.

6. The armature reed assembly according to claim 2, characterized in that: The fixed portion includes a fixed middle portion, a first connecting arm and a second connecting arm, the fixed middle portion has a first side surface and a second side surface opposite to each other, the first side surface is connected to the first connecting arm, the second side surface is connected to the second connecting arm, and the extension direction of the first connecting arm and the extension direction of the second connecting arm are both parallel to the extension direction of the non-fixed portion; The first connecting arm and the second connecting arm are both connected to the fixing member.

7. The armature reed assembly according to claim 6, characterized in that: Along the direction from the bracket body to the armature, part of the first connecting arm protrudes from the bracket body, part of the second connecting arm protrudes from the bracket body, and the part of the first connecting arm protruding from the bracket body cooperates with the side of the armature, and the part of the second connecting arm protruding from the bracket body cooperates with the side of the armature.

8. The armature reed assembly according to claim 6, characterized in that: The first connecting arm extends to the non-fixed portion, the second connecting arm extends to the non-fixed portion, a first gap is defined between the first connecting arm and the non-fixed portion, and a second gap is defined between the second connecting arm and the non-fixed portion.

9. The armature reed assembly according to claim 1, characterized in that: An extending direction of the connecting portion is perpendicular to an extending direction of the bracket body.

10. The armature reed assembly according to claim 1, characterized in that: The armature reed assembly further comprises a support frame, and the support frame comprises: a support body; The support body is provided with an avoidance groove, and the avoidance groove penetrates the support body along the thickness direction of the support body, the support body is mounted on the mounting surface of the armature, and the support body is located on one side of the connecting bracket; A deformable leaf spring structure is disposed in the avoidance groove, and at least a portion of the leaf spring structure is exposed outside the avoidance groove in the thickness direction of the support body, and the leaf spring structure presses the armature.

11. The armature reed assembly according to claim 10, characterized in that: The leaf spring structure comprises at least one first bending portion and at least one second bending portion, the bending direction of the first bending portion is opposite to the bending direction of the second bending portion, and the first bending portion and the second bending portion are alternately arranged and connected to each other; Along the thickness direction of the support body, the support body has a first surface and a second surface opposite to each other, the first bending portion protrudes from the first surface, the second bending portion protrudes from the second surface, and the second bending portion presses the armature.

12. The armature reed assembly according to claim 10, characterized in that: Along the first direction, side wings are respectively arranged on the opposite sides of the support body, and the avoidance groove is located between the two side wings. The two side wings protrude from the support body along the thickness direction of the support body, and the two side wings protrude from the support body along the same direction, and the two side wings are matched with the armature gap.

13. The armature reed assembly according to claim 10, characterized in that: The armature has a supporting surface facing away from the mounting surface, the supporting surface includes a first sub-surface and a second sub-surface, an angle is formed between the first sub-surface and the second sub-surface, and the second sub-surface is parallel to the mounting surface.

14. The armature spring assembly according to claim 13, characterized in that: The mounting surface is provided with a pressing groove, and along the thickness direction of the armature, the pressing groove is opposite to the first sub-surface, and the leaf spring structure abuts against the bottom of the pressing groove.

15. The armature reed assembly according to any one of claims 1 to 14, characterized in that: The fixing piece is perpendicular to the mounting surface, and the extending direction of the bracket body is perpendicular to the mounting surface.

16. A vacuum relay, characterized in that: The vacuum relay comprises an electromagnetic assembly and an armature reed assembly as claimed in any one of claims 1 to 15, wherein the armature reed assembly comprises a support frame, and the support frame comprises a support body; The electromagnetic assembly includes a magnetic cylinder and an electromagnetic coil, wherein the electromagnetic coil is arranged in the magnetic cylinder, the armature abuts against the top wall of one end of the magnetic cylinder, and the support body is fixedly connected to the top wall of one end of the magnetic cylinder via a side wing.

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