Contact piece structure and magnetic retention relay

Abstract

To provide a contact piece structure and a magnetic holding relay.SOLUTION: A contact piece structure includes a contact piece body having a slot. The slot has opposed first and second sidewalls. The first sidewall has a first plane portion and a protrusion protruding from the first plane portion toward the second sidewall. The second sidewall has a second plane portion and a recess recessed from the second plane portion and corresponding to the protrusion. Herein, a first distance from a top end of the protrusion of the first sidewall to a plane where the second plane portion is positioned is less than a thickness of the contact piece body. The contact piece structure according to an embodiment of the present invention is capable of avoiding deformation of the contact piece structure, thus improving production efficiency.SELECTED DRAWING: Figure 11

Description

Technical Field

[0001] The present invention relates to the technical field of relays, and particularly to a contact piece structure and a magnetic latching relay.

Background Art

[0002] A magnetic latching relay is an automatic switch that serves to close or disconnect a circuit. The magnetic latching relay includes a movable contact part and a coil. The movable contact part has at least two contact pieces. A movable contact is provided on one contact piece, and a fixed contact is provided on the other contact piece. When a forward pulse voltage is supplied to the coil, the movable contact and the fixed contact are brought into contact, and the circuit is conducted. When a reverse pulse voltage is supplied to the coil, the movable contact and the fixed contact are disconnected, and the circuit is disconnected.

[0003] Here, the components of the movable contact part include a movable contact piece and a compression spring. In order to ensure the stability of electrical characteristics, slots are provided in the movable contact piece and the compression spring, and the size of the slots is larger than the thickness of the movable contact piece or the compression spring itself. In this way, before assembling the movable contact part, during the transportation process, the movable contact piece or the compression spring may be inserted into the slots of other movable contact pieces or compression springs, and these components are likely to be deformed and need to be disassembled before assembly, resulting in a decrease in production efficiency.

[0004] The information disclosed in the background art part is only for enhancing the understanding of the background of the present invention. Therefore, the background part may include information that does not constitute related technologies already known to those skilled in the art.

Summary of the Invention

[0005] Embodiments of the present invention provide a contact piece structure and a magnetic latching relay, which can avoid deformation of the contact piece structure and improve production efficiency.

[0006] Embodiments of the present invention provide a contact piece structure having a contact piece body, the contact piece body having a slot, the slot having a first side wall and a second side wall facing each other, the first side wall having a first flat portion and a projection projecting from the first flat portion toward the second side wall, the second side wall including a second flat portion and a recessed portion recessed from the second flat portion and corresponding to the projection, wherein the first distance from the top of the projection of the first side wall to the plane on which the second flat portion is located is less than the thickness of the contact piece body.

[0007] According to some embodiments of the present invention, the second distance between the first side wall and the second side wall is greater than or equal to the thickness of the contact piece body.

[0008] According to some embodiments of the present invention, the distance between the first planar portion and the second planar portion is less than or equal to the distance between the projection of the first side wall and the recess of the second side wall, or The distance between the first flat portion and the second flat portion is greater than the distance between the projection on the first side wall and the recessed portion on the second side wall.

[0009] According to some embodiments of the present invention, the shape of the projection and the recessed portion is at least one of a triangle, an arch, a square, a rectangle, a trapezoid, a U-shape, and a hexagon.

[0010] According to some embodiments of the present invention, the shape of the projection and the recessed portion are identical.

[0011] According to some embodiments of the present invention, the contact piece structure includes a compression spring, the compression spring includes the contact piece body, and the contact piece body of the compression spring is a first contact piece body, the first contact piece body has two connection holes for connecting a movable contact, The slot includes a first slot, which is provided at one end of the compression spring having the connection hole, and the first slot is located between the two connection holes.

[0012] According to some embodiments of the present invention, the contact piece structure includes a movable contact piece, the movable contact piece includes a contact piece body, and the contact piece body of the movable contact piece is a second contact piece body, and one end of the second contact piece body is provided with two first mounting holes, the first mounting holes being used to mount a movable contact, and the slot includes a second slot, the second slot being provided between the two first mounting holes.

[0013] According to some embodiments of the present invention, the other end of the second contact piece body of the movable contact piece is provided with two second mounting holes, the second mounting holes are used for mounting a fixed contact, and the second slot extends from one end of the second contact piece body where the first mounting hole is provided toward the second mounting hole, but does not reach the second mounting hole.

[0014] According to some embodiments of the present invention, the contact piece structure includes a plurality of stacked movable contact pieces, each of which is provided with the second slot, and the shapes of the projections on the first side walls of the second slots of each movable contact piece are the same or different, and the shapes of the recesses on the second side walls of the second slots of each movable contact piece are the same or different.

[0015] According to some embodiments of the present invention, a magnetic holding relay comprising the contact piece structure described in any of the above embodiments is further provided.

[0016] From the aforementioned technical solutions, it can be seen that the present invention has at least one of the following advantages or beneficial effects: In embodiments of the present invention, the first side wall of the slot has a first flat portion and a projection, and the second side wall includes a second flat portion and a recessed portion. The first distance from the top of the projection of the first side wall to the plane where the second flat portion is located is smaller than the thickness of the contact piece body. This prevents other contact piece bodies from being inserted into the slot during transport, thus preventing deformation of the contact piece structure and eliminating the need to disassemble it before assembly, thereby improving production efficiency. [Brief explanation of the drawing]

[0017] The above-mentioned features and other features and advantages of the present invention will become more apparent from a detailed description of exemplary embodiments with reference to the accompanying drawings. [Figure 1] This is a schematic diagram of a contact piece structure shown in some embodiments of the present invention, where both the projection and the recessed portion are triangular in shape. [Figure 2] This is a schematic diagram of a contact piece structure shown in some embodiments of the present invention, where the shape of the projection is triangular, the recessed portion corresponds to the projection, and the projection and recessed portion are single. [Figure 3] This is a schematic diagram of a contact piece structure as shown in some other embodiments of the present invention, where both the projection and the recessed portion are arch-shaped. [Figure 4] This is a schematic diagram of a contact piece structure as shown in some other embodiments of the present invention, where the shape of both the projection and the recess is square. [Figure 5] This is a schematic diagram of a contact piece structure as shown in some other embodiments of the present invention, where the shape of both the projection and the recess is rectangular. [Figure 6] This is a schematic diagram of a contact piece structure as shown in some other embodiments of the present invention, where the shape of both the projection and the recess is rectangular. [Figure 7] This is a schematic diagram of a contact piece structure shown in some other embodiments of the present invention, where both the projection and the recessed portion are trapezoidal in shape. [Figure 8]Schematic diagram of the contact piece structure shown in some other embodiments of the present invention, where the shapes of both the protrusion and the recess are U-shaped. [Figure 9] Schematic diagram of the contact piece structure shown in some other embodiments of the present invention, where the shapes of both the protrusion and the recess are regular hexagons. [Figure 10] Schematic diagram of the contact piece structure shown in some other embodiments of the present invention. [Figure 11] Schematic diagram of the contact piece structure shown in some embodiments of the present invention, which includes a compression spring and a movable contact piece. [Figure 12] Schematic diagram of the contact piece structure shown in some embodiments of the present invention, which includes a compression spring and a movable contact piece. [Figure 13] Schematic diagram of the contact piece structure shown in some other embodiments of the present invention, which is a movable contact piece. [Figure 14] Schematic diagram of the contact piece structure shown in some embodiments of the present invention, which is a compression spring and a movable contact piece. [Figure 15] Schematic diagram of the contact piece structure shown in some embodiments of the present invention, which is a compression spring and a movable contact piece. [Figure 16] Perspective schematic diagram of the magnetic holding relay shown in some embodiments of the present invention. [Figure 17] Perspective schematic diagram of the magnetic holding relay shown in some embodiments of the present invention, from which the cover body is removed.

Mode for Carrying Out the Invention

[0018] Next, referring to the drawings, exemplary embodiments will be described in more detail. However, the exemplary embodiments can be implemented in various forms and should not be understood as being limited to the embodiments described in this specification. In contrast, these embodiments are provided to fully and completely cover the present invention and to convey the concept of the exemplary embodiments to those skilled in the art in an all-round manner. The same reference numerals in the figures indicate the same or similar configurations, and their detailed descriptions are omitted.

[0019] As shown in Figures 1 to 15, embodiments of the present invention provide a contact piece structure including a contact piece body 1. The contact piece body 1 has a slot 2, the slot 2 has opposing first side walls 21 and second side walls 22, the first side wall 21 has a first flat portion 211 and a projection 212 projecting from the first flat portion 211 toward the second side wall 22, the second side wall 22 includes a second flat portion 221 and a recessed portion 222 recessed from the second flat portion 221 and corresponding to the projection 212, where the first distance d1 from the top of the projection 212 of the first side wall 21 to the plane where the second flat portion 221 is located is smaller than the thickness d3 of the contact piece body 1.

[0020] In an embodiment of the present invention, the first side wall 21 of the slot 2 has a first flat portion 211 and a projection 212, and the second side wall 22 has a second flat portion 221 and a recessed portion 222. The first distance d1 from the top of the projection 212 of the first side wall 21 to the plane where the second flat portion 221 is located is smaller than the thickness d3 of the contact piece body 1. This prevents other contact piece bodies 1 from being inserted into the slot 2 during the transport process, thus preventing deformation of the contact piece structure and eliminating the need to disassemble before assembly, thereby improving production efficiency.

[0021] The contact piece structure of the embodiment of the present invention will be described in detail below.

[0022] As shown in Figure 14, the thickness d3 of the contact piece body 1 is the dimension of the contact piece body 1 in a direction perpendicular to the contact piece body 1. As shown in Figure 1, both the first planar portion 211 and the second planar portion 221 are planar.

[0023] In some embodiments, the second distance d2 between the first side wall 21 and the second side wall 22 is greater than or equal to the thickness d3 of the contact piece body 1. Here, the second distance d2 between the first side wall 21 and the second side wall 22 may be the distance between the first flat portion 211 and the second flat portion 221, or the distance between the top of the projection 212 and the bottom of the recessed portion 222. That is, whether it is the distance between the first flat portion 211 and the second flat portion 221, or the distance between the top of the projection 212 and the bottom of the recessed portion 222, in either case it is greater than or equal to the thickness d3 of the contact piece body 1.

[0024] In other words, a non-linear gap is formed between the first side wall 21 and the second side wall 22, the width of which the gap is greater than or equal to the thickness d3 of the contact piece body 1, and the second distance d2 between the first side wall 21 and the second side wall 22 is greater than or equal to the thickness d3 of the contact piece body 1, thereby ensuring the strength of the contact piece body 1 when it is formed with a press die. That is, when the contact piece body 1 is press-formed to create a gap between the first side wall 21 and the second side wall 22, the smaller the second pitch d2 of which the gap is, in particular, the smaller it is than the thickness d3 of the contact piece body 1, the less strength the contact piece body 1 has when it is press-formed, and the more likely it is to break. In the embodiment of the present invention, by setting the second pitch d2 of the gap of the contact piece body 1 to be greater than or equal to the thickness d3 of the contact piece body 1, the strength of the contact piece body 1 when it is press-formed can be increased, so that the contact piece body 1 is less likely to break and is suitable for mass production. Here, the width of the gap can be understood as the dimension of the gap along the direction perpendicular to the first planar portion 211 and the second planar portion 221.

[0025] In some embodiments, the distance between the first flat portion 211 and the second flat portion 221 is less than or equal to the distance between the projection 212 of the first side wall 21 and the recessed portion 222 of the second side wall 22.

[0026] In some embodiments, the distance between the first flat portion 211 and the second flat portion 221 is greater than the distance between the projection 212 of the first side wall 21 and the recessed portion 222 of the second side wall 22.

[0027] Specifically, the distance between the first flat portion 211 and the second flat portion 221, and the distance between the projection 212 of the first side wall 21 and the recessed portion 222 of the second side wall 22 can be adjusted. That is, the distribution of the width dimensions of the gap formed by the first side wall 21 and the second side wall 22 may be the same or different, but by making the first distance d1 from the projection 212 of the first side wall 21 to the plane where the second flat portion 221 of the second side wall 22 is located smaller than the thickness d3 of the contact piece body 1, the projection 212 can function as a barrier to other contact piece bodies, preventing the insertion of other contact piece bodies.

[0028] In some embodiments, the second distance d2 between the first side wall 21 and the second side wall 22 may be 1.5 to 4 times the first distance d1 from the projection 212 of the first side wall 21 to the plane where the second flat portion 221 of the second side wall 22 is located. Specifically, in addition to the two endpoints mentioned above, it may also be 2 times, 2.5 times, 3 times, 3.5 times, etc., and is not particularly limited here. In some embodiments, the first distance d1 from the projection 212 of the first side wall 21 to the plane where the second flat portion 221 of the second side wall 22 is located may be 1 / 4, 1 / 3, or 1 / 2 of the thickness d3 of the contact piece body 1, and is not particularly limited here. For example, the second distance d2 may be 0.5 mm, the first distance d1 may be 0.125 mm, and the thickness d3 of the contact piece body 1 may be 0.25 mm.

[0029] The distance between the first flat portion 211 and the second flat portion 221, and the distance between the projection 212 of the first side wall 21 and the recessed portion 222 of the second side wall 22 are not particularly limited and can be adjusted according to the circumstances of a person skilled in the art. Here, the distance between the projection 212 and the recessed portion 222 can be understood as the distance between the top of the projection 212 and the bottom of the recessed portion 222.

[0030] In some embodiments, as shown in Figures 1 to 10, the shapes of the projection 212 and the recess 222 are at least one of a triangle, arch, square, rectangle, trapezoid, and hexagon, respectively.

[0031] In some embodiments, the shapes of the projection 212 and the recessed portion 222 are identical, as shown in Figures 1 to 9.

[0032] As shown in Figures 1 and 2, the shapes of the projection 212 and the recess 222 are both triangular. Here, the shapes of the projection 212 and the recess 222 can be understood as the shapes of the figures formed by the edge contours of the projection 212 and the recess 222. The number of projections 212 and recess 222 shown in Figure 1 may be multiple, while Figure 2 shows that the number of projections 212 and recess 222 is single (one), and that the projection 212 and recess 222 are located on the edge of slot 2. As shown in Figure 3, the shapes of the projection 212 and the recess 222 are both arch-shaped. As shown in Figure 4, the shapes of the projection 212 and the recess 222 are both square. As shown in Figures 5 and 6, the shapes of the projection 212 and the recess 222 are both rectangular, and the dimensions of the projection 212 in Figure 6 are smaller than the dimensions of the recess 222. As shown in Figure 7, the shapes of the projection 212 and the recessed portion 222 are both trapezoidal. As shown in Figure 8, the shapes of the projection 212 and the recessed portion 222 are both U-shaped. As shown in Figure 9, the shapes of the projection 212 and the recessed portion 222 are both regular hexagons, and of course, the shapes of the projection 212 and the recessed portion 222 may be pentagonal, octagonal, etc., and are not particularly limited here. Having the same shape for the projection 212 and the recessed portion 222 makes it easier to adjust the distance between the projection 212 and the recessed portion 222, simplifies processing, and improves processing efficiency.

[0033] In some other embodiments, the shapes of the projection 212 and the recess 222 may differ. For example, the shape of the projection 212 may be triangular and the corresponding recess 222 may be arched, or the shape of the projection 212 may be trapezoidal and the corresponding recess 222 may be rectangular, and this can be adjusted according to the actual situation by those skilled in the art, and is not particularly limited here.

[0034] In some other embodiments, as shown in Figure 10, the shapes of the multiple protrusions 212 on the first side wall 21 may also be different, and the shapes of the multiple recesses 222 on the second side wall 22 may also be different. For example, the shape of the first protrusion 212 on the first side wall 21 may be arch-shaped, the shape of the second protrusion 212 may be rectangular, the shape of the recess 222 corresponding to the first protrusion 212 may be arch-shaped, trapezoidal, or rectangular, and the shape of the recess 222 corresponding to the second protrusion 212 may be rectangular, triangular, or square. In other words, in the case of multiple protrusions 212, the shapes of protrusion 212 may be different from those of other protrusions 212, and the shapes of the recesses 222 corresponding to the protrusions 212 may be the same or different, and can be installed according to the actual situation by a person skilled in the art, and are not particularly limited here.

[0035] In some embodiments, as shown in Figures 1 to 12, the contact piece structure includes a compression spring, the compression spring includes the contact piece body 1 in the embodiments, and for ease of distinction, the contact piece body 1 is referred to as the first contact piece body 1', and the first contact piece body 1' has two connection holes 3' for mounting a movable contact. Here, the slot 2 includes a first slot 2', the first slot 2' is provided at one end of the compression spring having the connection holes 3', and the first slot 2' is located between the two connection holes 3'.

[0036] Here, the compression spring is used to connect the movable contact and the relay's push card. When the push card moves, the first contact piece body 1' of the compression spring also moves with it, driving the movement of the movable contact and thereby achieving the closing or disconnection of the movable contact and the fixed contact. For this reason, the two connection holes 3' of the first contact piece body 1' of the compression spring are used to connect the movable contact. The first slot 2' is provided between the two connection holes 3', which reduces the stress on the first contact piece body 1' and improves the service life of the compression spring. Furthermore, the first slot 2' of the first contact piece body 1' of the compression spring has a projection 212 on the first side wall 21 that protrudes toward the second side wall 22, and the second side wall 22 has a recess 222 corresponding to the projection 212, which increases the heat dissipation area of ​​the compression spring and improves the heat dissipation efficiency of the compression spring.

[0037] In some embodiments, as shown in Figure 13, the contact piece structure includes a movable contact piece, the movable contact piece includes the contact piece body 1 in the embodiments, the contact piece body 1 being a second contact piece body 1'', and one end of the second contact piece body 1'' of the movable contact piece is provided with two first mounting holes 3'' for mounting a movable contact, the slot 2 includes a second slot 2'', the second slot 2'' is provided between the two first mounting holes 3''.

[0038] In some embodiments, as shown in Figure 13, the other end of the second contact piece body 1" of the movable contact piece is provided with two second mounting holes 4" for mounting a fixed contact, and the second slot 2" extends from one end of the second contact piece body 1" of the movable contact piece, where the first mounting hole 3" is provided, toward the second mounting hole 4", but does not reach the second mounting hole 4".

[0039] Specifically, as shown in Figures 13 and 14, the second contact piece body 1" of the movable contact piece is provided with a first mounting hole 3" and a second mounting hole 4" at opposite ends for mounting a movable contact and a fixed contact, respectively. The second slot 2" is provided between the two mounting holes, which reduces stress on the movable contact piece and improves the service life of the compression spring. At the same time, the first side wall 21 of the second slot 2" has a projection 212, and the second side wall 22 has a recess 222, thereby increasing the effective length of the second contact piece body 1" of the movable contact piece. After the movable contact piece, movable contact, and fixed contact are assembled and energized, the increased effective length can increase the ampere force received by the movable contact piece (after the movable contact piece is assembled and energized, it can form a parallel circuit structure with other movable contact pieces, and two parallel movable contact pieces can attract each other with ampere force). Thus, the contact pressure between the movable contact and the fixed contact can be increased, improving the stability of the closure of the movable contact and the fixed contact.

[0040] In some embodiments, as shown in Figure 14, the contact piece structure includes a plurality of stacked movable contact pieces, each movable contact piece having a second contact piece body 1" with a second slot 2", and the shapes of the protrusions 212 on the first side wall 21 of the second slot 2" of each movable contact piece are the same or different, and the shapes of the recesses 222 on the second side wall 22 of the second slot 2" of each movable contact piece are the same or different.

[0041] In some embodiments, as shown in Figure 14, the contact piece structure includes three movable contact pieces, and the shapes of the projections 212 and recesses 222 of the second contact piece body 1'' of the three movable contact pieces are identical, for example, all being arch-shaped. The second contact piece bodies 1'' of the three movable contact pieces are the first movable contact piece body 11'', the second movable contact piece body 12'', and the third movable contact piece body 13'', respectively. In some other embodiments, the projection 212 of the first side wall 21 of the second slot 2'' of the first movable contact piece body 11'' is triangular. The recessed portion 222 may be triangular, the projection 212 on the first side wall 21 of the second slot 2" of the second movable contact piece body 12" may be arch-shaped, the recessed portion 222 may be arch-shaped, and the projection 212 on the first side wall 21 of the second slot 2" of the third movable contact piece body 13" may be trapezoidal or recessed portion 222. Of course, the projections 212 of each movable contact piece may have different shapes, and the recessed portion 222 may have different shapes, and is not particularly limited here.

[0042] In some embodiments, as shown in Figures 14 and 15, the contact piece structure includes a compression spring and a movable contact piece. The installation of the first slot 2' of the first contact piece body 1' of the compression spring and the installation of the second slot 2" of the second contact piece body 1" of the movable contact piece are the same as those described in the above embodiments and will not be repeated here.

[0043] In some other embodiments, as shown in Figures 11 and 12, the first side wall 21 of the second slot 2" of the second contact piece body 1" of the movable contact piece does not have a projection 212, and the second side wall 22 does not have a recessed portion 222, and both the first side wall 21 and the second side wall 22 are flat. The movable contact piece is combined with the compression spring of the above embodiment to form the contact piece structure of the above embodiment.

[0044] In some embodiments, the contact piece structure may further include a movable contact and a fixed contact (not shown), and the connection hole 3' of the first contact piece body 1' of the compression spring, the first mounting hole 3' of the second contact piece body 1'' of the movable contact piece are assembled with the movable contact, and the second mounting hole 4'' of the second contact piece body 1'' of the movable contact piece are assembled with the fixed contact, thereby forming a movable contact assembly in a relay.

[0045] As described above, the first side wall 21 of the slot 2 in the embodiment of the present invention has a first flat portion 211 and a projection 212, and the second side wall 22 has a second flat portion 221 and a recessed portion 222. The first distance d1 from the top of the projection 212 of the first side wall 21 to the plane where the second flat portion 221 is located is smaller than the thickness d3 of the contact piece body 1. This prevents other contact piece bodies 1 from being inserted into the slot 2 during the transport process, thus preventing deformation of the contact piece structure and eliminating the need to disassemble before assembly, thus improving production efficiency.

[0046] Embodiments of the present invention further provide a magnetic holding relay, which, as shown in Figures 16 and 17, includes a housing and a contact piece structure as described in any of the embodiments above.

[0047] Here, the housing 5 includes a base 51 and a cover body 52. ​​The contact piece structure is mounted on the base 51, and when the cover body 52 is closed, the contact piece structure can be housed within the housing 5. The contact piece structure has already been specifically described in the above embodiment, so it will not be repeated here.

[0048] As described above, the magnetic holding relay of the embodiment of the present invention includes the contact piece structure described in any of the above embodiments, the contact piece structure is less prone to deformation, and the production efficiency of the magnetic holding relay is improved.

[0049] The various embodiments / models provided by the present invention can be combined with each other without contradiction and will not be listed and described individually here.

[0050] In the embodiments of the invention, the terms “first,” “second,” and “third” are used solely for illustrative purposes and are not intended to indicate or imply relative importance. The term “plural” means two or more unless otherwise specified. Terms such as “attach,” “connect,” “join,” and “fix” should be understood broadly. For example, “connect” may be a fixed connection, a removable connection, or an integral connection. “Connect” may be a direct connection or an indirect connection via an intermediate medium. The specific meanings of the terms in the embodiments of the invention can be understood by those skilled in the art depending on the specific circumstances.

[0051] In the description of embodiments of the present invention, the directions or positional relationships indicated by terms such as "up," "down," "left," "right," "front," and "back" are directions or positional relationships based on the drawings and are merely for the purpose of describing and simplifying the description of embodiments of the present invention, and do not indicate or imply that the device or unit being referred to needs to have a specific orientation in order to be configured and operate in a particular direction, nor should they be understood as limitations on embodiments of the invention.

[0052] In this specification, terms such as “one embodiment,” “several embodiments,” and “specific embodiments” mean that a particular feature, structure, material, or characteristic described in relation to this embodiment or example is included in at least one embodiment or example of the embodiment of the invention. In this specification, the general expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, any particular feature, structure, material, or characteristic described may be combined in an appropriate manner in any one or more embodiments or examples.

[0053] The above are merely preferred embodiments of the invention and are not intended to limit the embodiments of the invention; to those skilled in the art, the embodiments of the invention are subject to various modifications and changes. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of the invention are included within the scope of protection of the embodiments of the invention. [Explanation of symbols]

[0054] 1, contact piece body, 2. Slot, 21. First side wall, 211, First planar section, 212, protrusion; 22. Second side wall, 221, Second planar section, 222, sinkhole, 1', First contact piece body, 2', the first slot, 3', connection hole, 1”, second contact piece body, 11”, first movable contact piece body, 12”, second movable contact piece body, 13”, third movable contact piece body, 2”, second slot, 3”, first mounting hole, 4”, second mounting hole, 5. Housing, 51, Bass, 52, Cover body, d1, the first distance, d2, the second distance, d3, the thickness of the contact piece body.

Claims

1. A contact piece structure having a contact piece body, The contact piece body has a slot and a first side wall and a second side wall facing the slot, the first side wall has a first flat portion and a projection protruding from the first flat portion toward the second side wall, and the second side wall includes a second flat portion and a recessed portion recessed from the second flat portion corresponding to the projection, The first distance from the top of the projection on the first side wall to the plane on which the second flat portion is located is smaller than the thickness of the contact piece body. The contact piece structure includes a compression spring, the compression spring includes the contact piece body, and the contact piece body of the compression spring is a first contact piece body, the first contact piece body has two connection holes for connecting a movable contact, and a bent portion is provided between the other end of the first contact piece body facing the end having the connection holes and the end of the slot. The first contact piece body includes a first slot, the first slot being provided at one end of the compression spring having the connection hole, and the first slot being located between the two connection holes, the first side wall of the first slot having a projection projecting toward the second side wall, and the second side wall having a recess corresponding to the projection A contact piece structure characterized by the following:

2. The second distance between the first side wall and the second side wall is greater than or equal to the thickness of the contact piece body. The contact piece structure according to claim 1, characterized by the features described above.

3. The distance between the first flat portion and the second flat portion is less than or equal to the distance between the projection of the first side wall and the recessed portion of the second side wall, or The distance between the first flat portion and the second flat portion is greater than the distance between the projection on the first side wall and the recessed portion on the second side wall. The contact piece structure according to claim 1, characterized by the features described above.

4. The shape of the projection and the recessed portion are, each, at least one of the following: triangle, arch, square, rectangle, trapezoid, U-shape, and hexagon. The contact piece structure according to claim 1, characterized by the features described above.

5. The shape of the projection and the recessed portion are identical. The contact piece structure according to claim 1, characterized by the features described above.

6. The contact piece structure includes a movable contact piece, the movable contact piece includes a contact piece body, and the contact piece body of the movable contact piece is a second contact piece body, and two first mounting holes are provided at one end of the second contact piece body, the first mounting holes are used for mounting the movable contact, and the slot includes a second slot, the second slot is provided between the two first mounting holes. The contact piece structure according to claim 1, characterized by the features described above.

7. The other end of the second contact piece body of the movable contact piece is provided with two second mounting holes, the second mounting holes are used for mounting a fixed contact, and the second slot extends from one end of the second contact piece body where the first mounting hole is provided toward the second mounting hole, but does not reach the second mounting hole. The contact piece structure according to claim 6, characterized by the features described above.

8. The contact piece structure includes a plurality of stacked movable contact pieces, each of which is provided with the second slot, and the shape of the projection on the first side wall of the second slot of each movable contact piece is the same or different, and the shape of the recessed portion on the second side wall of the second slot of each movable contact piece is the same or different. The contact piece structure according to claim 6, characterized by the features described above.

9. The contact piece structure is included in any one of claims 1 to 8. A magnetic holding relay characterized by the following features.

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