Relay with microswitch

Abstract

The utility model discloses a relay with a microswitch, comprising a housing comprising a pedestal and an upper cover covering the pedestal, and the pedestal is provided with a mounting groove; the magnetic circuit driving part comprises a magnetic circuit system and a pushing frame, and the magnetic circuit system is used for driving the pushing frame to move; the contact part comprises a movable contact and a static contact which can be closed and separated; and the microswitch is clamped in the mounting groove, abuts against the upper cover, and can be synchronously switched by the pushing frame when the magnetic circuit system drives the pushing frame and the pushing frame pushes the movable contact and the static contact to switch the opening and closing states. According to the relay with the microswitch, the microswitch is arranged on the base and is pushed by the movement of the pushing frame, and the microswitch and the contact part are independently arranged, so that the risk of electric breakdown is avoided, and the use safety of the relay is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to a relay with a micro switch. Background Art

[0002] An electromagnetic relay is an electrical device that uses electromagnetic force to drive mechanical parts to move and produce a predetermined response. It is generally composed of a magnetic circuit part, a moving spring part, and a static spring part. The magnetic circuit part generally includes an iron core, a frame, a coil, an armature, and a yoke. When current flows through the coil, an electromagnetic force is generated, and the armature is attracted and contacts the pole surface at one end of the iron core, thereby driving the moving contact of the moving spring part and the static contact of the static spring part to close; when the current in the coil disappears, the electromagnetic force disappears, and the armature resets and separates from the pole surface at one end of the iron core, thereby separating the moving contact of the moving spring part from the static contact of the static spring part. In this way, the purpose of connecting or disconnecting the circuit of the external load is achieved through the contact or separation of the moving contact and the static contact.

[0003] During the use of the relay, in order to determine whether the moving contact and the static contact are in a closed state or in a separated state, a micro switch is set in the relay, and the state between the moving contact and the static contact is determined by the closing or opening of the micro switch. However, when the micro switch in the prior art is installed in the relay, the terminal of the detection circuit board and the high-voltage load end are directly connected through a wire, and current flows between the terminal of the detection circuit board and the high-voltage load end, which is prone to the risk of high-voltage electrical breakdown. Utility Model Content

[0004] In order to solve at least one problem existing in the above-mentioned prior art, according to one aspect of the utility model, a relay with a micro switch is provided, comprising:

[0005] The housing comprises a base and an upper cover arranged on the base, wherein the base is provided with a mounting groove;

[0006] The magnetic circuit driving part includes a magnetic circuit system and a pushing frame, wherein the magnetic circuit system is used to drive the pushing frame to move;

[0007] The contact part includes the moving contact and the stationary contact that can close and separate;

[0008] The micro switch is clamped in the mounting groove and abutted against the upper cover. When the magnetic circuit system drives the pushing frame and the pushing frame pushes the moving contact and the static contact to switch the open and closed states, the pushing frame can perform synchronous switching of the open and closed states.

[0009] In some embodiments, the micro switch and the moving contact are located at two ends of the pushing frame in the moving direction.

[0010] In some embodiments, a limiting structure is provided on the base, and the limiting structure forms the installation groove.

[0011] In some embodiments, the limiting structure includes a support platform and limiting ribs, the limiting ribs, the support platform and the base are surrounded to form the mounting groove, the support platform is used to support the micro switch, the limiting ribs are used to limit the micro switch in the X and Y directions, and the support platform and the upper cover are used to limit the micro switch in the Z direction.

[0012] In some embodiments, the micro switch includes a body and a button slidably disposed on the body;

[0013] The base has a first side wall and a second side wall connected to each other;

[0014] The limiting ribs, the supporting platform, the first side wall and the second side wall are arranged to form the installation groove.

[0015] In some embodiments, the limiting rib includes an X-direction limiting protrusion and a Y-direction limiting protrusion, the X-direction limiting protrusion is used to cooperate with the first side wall to limit the main body in the X direction; the Y-direction limiting protrusion is used to cooperate with the second side wall to limit the main body in the Y direction, and can be passed through by the button.

[0016] In some embodiments, the X-direction limiting protrusion includes a plurality of first protrusions, the plurality of first protrusions are arranged opposite to each other along the X direction, some of the first protrusions are arranged opposite to the first side wall, and some of the first protrusions are connected to the first side wall.

[0017] In some embodiments, a groove is formed in the support platform.

[0018] In some embodiments, a supporting rib is provided on the inner wall of the upper cover, and the supporting rib is supported against the main body and is used to cooperate with the support platform to limit the main body in the Z direction.

[0019] In some embodiments, the retaining rib includes a third protrusion and a fourth protrusion arranged perpendicularly to each other, the third protrusion extends along the X direction and is used to be clamped between the Y-direction limiting protrusion and the main body, and the fourth protrusion extends along the Y direction and is used to retain the main body.

[0020] In summary, the relay with a micro switch provided by the utility model has the following technical effects:

[0021] By setting a mounting groove on the base, the micro switch is installed in the mounting groove, and under the drive of the magnetic circuit system, when the pushing frame pushes the moving contact and the static contact to close or open, the pushing frame simultaneously presses or releases the micro switch to achieve the opening or closing state switching of the micro switch. In this way, the micro switch and the contact part are independently set, avoiding the risk of electrical breakdown and improving the safety of the relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a micro switch according to an embodiment of the utility model;

[0023] Figure 2 This is a schematic structural diagram of a relay with a micro switch according to an embodiment of the utility model;

[0024] Figure 3 for Figure 2 A schematic diagram of the structure when the relay with the micro switch is hidden in the upper cover and the push frame presses the micro switch;

[0025] Figure 4 for Figure 2 A schematic diagram of the structure of the relay with micro switch after the upper cover and the base are hidden;

[0026] Figure 5 for Figure 3 The enlarged schematic diagram of point Ⅰ in the middle;

[0027] Figure 6 for Figure 2 A schematic diagram of the structure when the relay with the micro switch is hidden in the upper cover and the push frame and the micro switch are separated;

[0028] Figure 7 for Figure 2 Another schematic diagram of the structure of the relay with micro switch after the upper cover and the base are hidden;

[0029] Figure 8 for Figure 2 A schematic diagram of the structure of the relay with a micro switch after the upper cover and the micro switch are hidden;

[0030] Fig. 9 for Figure 8 The enlarged schematic diagram of the middle II;

[0031] Fig.10 for Figure 3 Schematic diagram of the connection of the micro switch and the connecting connector;

[0032] Fig.11 This is a schematic diagram of the structure of the upper cover and the micro switch of an embodiment of the utility model;

[0033] Fig.12 for Fig.11 The enlarged schematic diagram of point III in the middle;

[0034] Fig.13 for Figure 2 Schematic diagram of the structure of the upper cover.

[0035] Figure: 100-relay with micro switch, 10-housing, 11-base, 111-first side wall, 112-second side wall, 12-upper cover, 121-holding rib, 1211-third protrusion, 1212-fourth protrusion, 13-installation groove, 14-limiting structure, 141-support platform, 1411-groove, 142-limiting rib, 1421-X-direction limiting protrusion, 1422-Y-direction limiting protrusion, 1423-first protrusion, 1424-connecting rib, 1425-second protrusion Start, 1426-avoidance gap, 143-support rib, 20-magnetic circuit driving part, 21-magnetic circuit system, 211-coil, 212-yoke, 213-armature, 214-rotating frame, 215-iron core, 22-pushing frame, 30-contact part, 31-moving contact, 32-static contact, 40-connecting connector, 41-signal terminal, 42-wire, 200-micro switch, 50-main body, 60-connecting terminal, 70-button, 80-first abutment, 90-second abutment. DETAILED DESCRIPTION

[0036] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0039] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0040] See also Figures 1 to 13, a relay 100 with a micro switch provided in an embodiment of the utility model includes a housing 10 , a magnetic circuit driving part 20 , a contact part 30 and a micro switch 200 .

[0041] Among them, see Figures 2 to 9 The housing 10 includes a base 11 and an upper cover 12 arranged on the base 11, and a mounting groove 13 is arranged on the base 11; the magnetic circuit driving part 20 includes a magnetic circuit system 21 and a pushing frame 22, and the magnetic circuit system 21 is used to drive the pushing frame 22 to move; the contact part 30 includes a moving contact 31 and a static contact 32 that can be closed and separated; the micro switch 200 is clamped in the mounting groove 13 and abutted against the upper cover 12, and can be driven by the magnetic circuit system 21 to drive the pushing frame 22 and the moving contact 31 and the static contact 32 to switch the open and closed states, and the opening and closing states are switched synchronously by pressing or releasing the pushing frame 22.

[0042] The above-mentioned relay 100 with a micro switch is provided with a mounting groove 13 on the base 11 so as to install the micro switch 200 in the mounting groove 13. When the pushing frame 22 pushes the moving contact 31 and the static contact 32 to close or open, the pushing frame 22 simultaneously presses or releases the micro switch 200 under the drive of the magnetic circuit system 21, so as to realize the switching of the open or closed state of the micro switch 200. In this way, the micro switch 200 and the contact part 30 are independently set, thereby avoiding the risk of electrical breakdown and improving the safety of the relay.

[0043] Among them, see Figure 1 The micro switch 200 of this embodiment includes a main body 50, a connecting terminal 60, a button 70, a first abutting platform 80 and a second abutting platform 90. The button 70 is slidably arranged relative to the main body 50. The connecting terminal 60 is used to be electrically connected to the connecting connector 40 installed on the base 11, so that after pressing or releasing the button 70, the signal of the micro switch 200 can be transmitted through the connecting connector 40. The first abutting platform 80 is used to abut against the inner wall of the base 11. The opening area of ​​the first abutting platform 80 is smaller than the area of ​​the side of the main body 50 where the first abutting platform 80 is installed, so that the first abutting platform 80 with a smaller area contacts the inner wall of the base 11, which facilitates the heat dissipation of the micro switch 200 during use; the second abutting platform 90 is used to abut against the upper cover 12.

[0044] Specifically, when the micro switch 200 of this embodiment is set, the micro switch 200 and the moving contact 31 are located at both ends of the movement direction of the pushing frame 22. The pushing frame 22 in this embodiment is set to move along the Y direction, that is, under the drive of the magnetic circuit system 21, the pushing frame 22 moves along the Y direction. When the moving contact 31 and the static contact 32 are closed, the pushing frame 22 and the micro switch 200 are disengaged; when the pushing frame 22 moves in the opposite direction, the moving contact 31 and the static contact 32 are separated. At this time, the pushing frame 22 presses the micro switch 200, and the open and closed states of the micro switch 200 are switched. In this way, by arranging the micro switch 200 and the moving contact 31 at the two ends in the direction of movement of the push frame 22, it is possible to cooperate with the micro switch 200 without making major structural changes to the push frame 200. For example, in order to ensure the miniaturization of the structure of the relay, it is only necessary to slightly reduce the length of the push frame 22. Furthermore, since the connecting connector 40 is arranged on the side wall of the base 11 opposite to the static contact 32, the micro switch 200 and the moving contact 31 are arranged at the two ends in the direction of movement of the push frame 22. The micro switch 200 can be directly electrically connected to the connecting connector 40, which is adapted to the original structure of the relay. In this way, the additional assembly cost of the relay is avoided. Among them, the schematic diagram of the connection terminal 60 of the micro switch 200 and the signal terminal of the connecting connector 40 being connected by a wire is shown in FIG. Fig.10 shown.

[0045] The magnetic circuit system 21 includes a coil 211, an iron core 215, a yoke 212, an armature 213 and a rotating frame 214. The iron core is passed through the coil 211. A yoke 212 is provided at each end of the coil 211 along the axial direction of the coil 211. The rotating frame 214 is provided with two armatures 213 and a permanent magnet. The two armatures 213 are provided on opposite sides of the permanent magnet. The rotating frame 214 is rotatably arranged relative to the pushing frame 22. When the current is passed through the coil 211 or cut off, the rotating frame 214 It rotates in different directions so that an armature 213 and a yoke 212 remain in an attracted state correspondingly, and at the same time, the rotation of the rotating frame 214 can push the pushing frame 22 to move, so that the pushing frame 22 drives the moving contact 31 and the static contact 32 to close or separate, and at the same time, the pushing frame 22 presses the micro switch 200 or disengages from the micro switch 200 to achieve the closing or opening of the micro switch 200, so as to be able to transmit the opening and closing conditions of the moving contact 31 and the static contact 32 to the outside.

[0046] Specifically, see Figure 5 and Fig. 9In this embodiment, when the mounting groove 13 is formed, a limiting structure 14 is provided on the base 11, and the limiting structure 14 forms the mounting groove 13. In this way, by setting the limiting structure 14, the limiting structure 14 can support and limit the micro switch 200. Since the limiting structure 14 has a certain height in the Z direction, a micro switch 200 with a smaller volume can be set; at the same time, by setting the limiting structure 14, the limiting structure 14 can set the depth of the mounting groove 13 as needed to ensure the installation strength of the micro switch 200.

[0047] Among them, see Figure 3 , Figure 5 , Figure 6 , Figure 8 and Fig. 9 In order to ensure the stability of the position of the micro switch 200 after installation, the limiting structure 14 includes a support platform 141 and a limiting rib 142. The limiting rib 142, the support platform 141 and the base 11 are surrounded to form an installation groove 13. The support platform 141 is used to support the micro switch 200, and the limiting rib 142 is used to limit the micro switch 200 in the X direction and the Y direction. The support platform 141 and the upper cover 12 are used to limit the micro switch 200 in the Z direction. The micro switch 200 is installed and engaged through the cooperation between the limiting rib 142, the support platform 141 and the base 11. At the same time, the limiting rib 142 and the base 11 cooperate to limit the micro switch 200 in the X direction and the Y direction. The support platform 141 and the upper cover 12 are used to limit the micro switch 200 in the Z direction, so that after the micro switch 200 is installed in the installation groove 13, the micro switch 200 is engaged in a stable state to avoid shaking.

[0048] Among them, in this embodiment, the base 11 includes a first side wall 111 and a second side wall 112 that are connected to each other, the connecting joint 40 is arranged on the second side wall 112, and the installation groove 13 is arranged at the connection between the first side wall 111 and the second side wall 112, that is, the limiting rib 142, the support platform 141, the first side wall 111 and the second side wall 112 are jointly formed to form the installation groove 13, that is, the space in the corner of the base 11 is fully utilized to ensure that the volume of the relay is miniaturized after the micro switch 200 is installed.

[0049] Specifically, see Figure 5 , Figure 6 and Fig. 9The limiting rib 142 includes an X-direction limiting protrusion 1421 and a Y-direction limiting protrusion 1422. The X-direction limiting protrusion 1421 is used to cooperate with the first side wall 111 to limit the main body 50 in the X direction; the Y-direction limiting protrusion 1422 can be passed through by the button 70, and is used to cooperate with the second side wall 112 to limit the main body 50 in the Y direction, so that the micro switch 200 is clamped in the installation groove 13 by the arrangement of the X-direction limiting protrusion 1421 and the Y-direction limiting protrusion 1422.

[0050] Specifically, the X-direction limiting protrusion 1421 includes a plurality of first protrusions 1423, and the plurality of first protrusions 1423 are relatively arranged along the X-direction. Some of the first protrusions 1423 are relatively arranged to the first side wall 111, and some of the first protrusions 1423 are connected to the first side wall 111. In this way, the micro switch 200 is limited in the X-direction through the cooperation between the first protrusions 1423.

[0051] Specifically, the present embodiment includes four first protrusions 1423, two first protrusions 1423 are arranged opposite to the first side wall 111, two first protrusions 1423 are connected to the first side wall 111, and one first protrusion 1423 and one first protrusion 1423 are arranged in one-to-one correspondence among the opposite first protrusions 1423. Among them, the first protrusion 1423 not connected to the first side wall 111 is connected with a connecting rib 1424, thereby improving the structural strength of the entire X-direction limiting protrusion 1421.

[0052] See also Figure 5 , Figure 6 , Figure 8 and Fig. 9 The Y-direction limiting protrusion 1422 of this embodiment includes two second protrusions 1425 arranged opposite to each other along the X direction, and the second protrusions 1425 and the second side wall are arranged opposite to each other along the Y direction. An avoidance gap 1426 for the button 70 is formed between the two second protrusions 1425, that is, the button 70 of the micro switch 200 is extended out from the avoidance gap 1426 so as to be pressed by the push frame 22. At the same time, the second protrusion 1425 cooperates with the second side wall 112 to limit the movement of the micro switch 200 in the Y direction.

[0053] For further information, see Fig. 9 The limiting structure 14 also includes a supporting rib 143, which is connected to the supporting platform 141 and the second side wall 112, and is used to support the main body 50. In this way, the first abutting platform 80 is supported by the supporting rib 143, which increases the contact area between the entire micro switch 200 and the supporting platform 141, thereby ensuring the stability of the installation of the micro switch 200.

[0054] Among them, the base 11 of this embodiment is formed by injection molding. In order to ensure the shape stability of the support platform 141 during injection molding, a groove 1411 is opened in the support platform 141. Through the setting of the groove 1411, the base 11 is prevented from shrinking during injection molding and demolding, which may cause deformation of the support platform 141, and the thickness of the support platform 141 can be ensured to be uniform.

[0055] See also Figures 11 to 13 In one embodiment of the utility model, when the micro switch 200 is installed in the installation groove 13, the micro switch 200 needs to contact the upper cover 12 to limit the micro switch 200 along the Z direction. The inner wall of the upper cover 12 is provided with a supporting rib 121, and the supporting rib 121 and the main body 50 are supported and used to cooperate with the supporting rib 143 to limit the main body 50 in the Z direction. In this way, the micro switch 200 is limited along the Z direction through the cooperation between the supporting rib 121 and the support platform 141.

[0056] Specifically, the supporting rib 121 includes a third protrusion 1211 and a fourth protrusion 1212 which are arranged perpendicularly to each other. The third protrusion 1211 extends along the X direction and is used to be clamped between the Y-direction limit protrusion 1422 and the main body 50. The fourth protrusion 1212 extends along the Y direction and is used to be supported by the main body 50. In this way, the movement of the micro switch 200 along the Y direction is further limited by the third protrusion 1211 being clamped between the Y-direction limit protrusion 1422 and the main body 50. The movement of the micro switch 200 along the Z direction is limited by the fourth protrusion 1212 being supported by the main body 50 and cooperating with the support platform 141.

[0057] Among them, see Figures 3 to 5 , the state when the push frame 22 presses the micro switch 200 corresponds to the state where the moving contact 31 and the static contact 32 are disconnected; please refer to Figure 6 and Figure 7 , the push frame 22 and the micro switch 200 are in a separated state, corresponding to the moving contact 31 and the static contact 32 being in a closed state.

[0058] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A relay with a micro switch, characterized in that: include: The housing comprises a base and an upper cover arranged on the base, wherein the base is provided with a mounting groove; The magnetic circuit driving part includes a magnetic circuit system and a pushing frame, wherein the magnetic circuit system is used to drive the pushing frame to move; The contact part includes the moving contact and the stationary contact that can close and separate; The micro switch is clamped in the mounting groove and abutted against the upper cover. When the magnetic circuit system drives the pushing frame and the pushing frame pushes the moving contact and the static contact to switch the open and closed states, the pushing frame can perform synchronous switching of the open and closed states.

2. The relay with a micro switch according to claim 1, characterized in that: The micro switch and the moving contact are located at two ends of the moving direction of the pushing frame.

3. The relay with a micro switch according to claim 1 or 2, characterized in that: A limiting structure is provided on the base, and the limiting structure forms the installation groove.

4. The relay with a micro switch according to claim 3, characterized in that: The limiting structure includes a support platform and limiting ribs. The limiting ribs, the support platform and the base are surrounded to form the mounting groove. The support platform is used to support the micro switch. The limiting ribs are used to limit the micro switch in the X and Y directions. The support platform and the upper cover are used to limit the micro switch in the Z direction.

5. The relay with a micro switch according to claim 4, characterized in that: The micro switch comprises a main body and a button slidably arranged on the main body; The base has a first side wall and a second side wall connected to each other; The limiting ribs, the supporting platform, the first side wall and the second side wall are arranged to form the installation groove.

6. The relay with a micro switch according to claim 5, characterized in that: The limiting rib includes an X-direction limiting protrusion and a Y-direction limiting protrusion. The X-direction limiting protrusion is used to cooperate with the first side wall to limit the main body in the X direction; the Y-direction limiting protrusion is used to cooperate with the second side wall to limit the main body in the Y direction, and can be passed through by the button.

7. The relay with a micro switch according to claim 6, characterized in that: The X-direction limiting protrusion includes a plurality of first protrusions, the plurality of first protrusions are arranged opposite to each other along the X direction, some of the first protrusions are arranged opposite to the first side wall, and some of the first protrusions are connected to the first side wall.

8. The relay with a micro switch according to any one of claims 4 to 7, characterized in that: A groove is provided in the support platform.

9. The relay with a micro switch according to claim 6 or 7, characterized in that: The inner wall of the upper cover is provided with a supporting rib, and the supporting rib is supported by the main body and is used to cooperate with the support platform to limit the main body in the Z direction.

10. The relay with a micro switch according to claim 9, characterized in that: The abutting rib comprises a third protrusion and a fourth protrusion which are arranged perpendicularly to each other. The third protrusion extends along the X direction and is used to be clamped between the Y-direction limiting protrusion and the main body. The fourth protrusion extends along the Y direction and is used to abut against the main body.

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