A secondary plug-in for low voltage cabinet

Abstract

The present invention discloses a secondary plug-in for a low-voltage cabinet, the secondary plug-in comprises a plug and a socket, a moving contact piece is installed on the plug, a socket is provided with a socket for the plug to be inserted and a static contact piece installed inside the socket, a protruding contact part is provided at the end of the moving contact piece, a horizontal baffle and a vertical baffle are elastically connected to the plug, the top of the vertical baffle protrudes from the contact part and abuts against the static contact piece from below to prevent the static contact piece from fitting with the contact part, the horizontal baffle abuts against the bottom of the vertical baffle, and a push plate is also provided on the socket, after the plug is inserted into the socket, the push plate pushes the horizontal baffle to move and releases the abutment on the vertical baffle. The beneficial effect of the present invention is that during the process of the plug being inserted into the socket, the contact part of the moving contact piece does not need to contact and move with the static contact piece, which reduces the wear on the contact part and reduces the possibility of poor contact between the moving contact piece and the static contact piece after the plug is plugged in and out for many times.

Description

Technical Field

[0001] The invention belongs to the technical field of electric connectors, and in particular relates to a secondary plug-in unit for a low-voltage cabinet. Background Art

[0002] The secondary plug-in is an electrical connection device used to control the on and off of the secondary circuit. It is widely used in circuit systems, especially for controlling the secondary circuit in the low-voltage cabinet.

[0003] The secondary plug-in mainly includes a plug and a socket. A static contact is provided in the secondary static plug-in, and a moving contact is provided in the plug. When the plug is inserted into the socket, the static contact will retract inward and clamp the moving contact to conduct the secondary circuit.

[0004] In order to increase the clamping force of the static contact on the moving contact, a protruding contact portion is provided at the end of the moving contact. After the static contact clamps the moving contact, it contacts the top of the contact portion. However, during the process of inserting the plug into the socket, the contact portion will move in contact with the static contact from the very beginning and rub against each other. Similarly, during the process of pulling the plug out of the socket, the contact portion will also move in contact with the static contact and rub against each other. This results in more wear on the contact portion of the moving contact after multiple plugging and unplugging between the plug and the socket, and it is easy to have poor contact with the static contact, affecting the stability of the conduction of the secondary circuit. Summary of the invention

[0005] In the existing secondary plug-in, after multiple plug-ins and plug-outs, the contact part of the moving contact piece is easily worn, which easily leads to poor contact when it contacts with the static contact piece later. To solve this problem, the following invention is proposed:

[0006] A secondary plug-in for a low-voltage cabinet, the secondary plug-in comprising a plug and a socket, the plug being provided with a moving contact piece, the socket being provided with a socket for inserting the plug and a stationary contact piece installed on the inner side of the socket, a protruding contact portion being provided at the end of the moving contact piece, a horizontal baffle and a vertical baffle being elastically connected to the plug, the top of the vertical baffle protruding from the contact portion, the horizontal baffle abutting against the bottom of the vertical baffle, and a push plate being provided on the socket.

[0007] During the process of inserting the plug into the socket, the contact portion will abut against the static contact piece to prevent the static contact piece from fitting with the contact portion, so that the contact portion does not need to move in contact with the static contact piece, and no wear will be caused to the contact portion. After the plug is fully inserted into the socket, the push plate pushes the horizontal baffle to move and releases the abutment on the vertical baffle. Then the static contact piece pushes the vertical baffle to move downward and fits with the contact portion, so that the moving contact piece and the static contact piece are electrically connected to each other in the installation groove 2.

[0008] Furthermore, a mounting groove is provided on the plug, and the cross baffle is horizontally elastically connected to the mounting groove through a first spring. A groove and a through hole are provided at the end of the mounting groove. A vertical block is provided on the upper and lower sides of the groove respectively. The two vertical blocks are vertically elastically connected by a second spring. The end of the cross baffle is blocked between the two vertical blocks. After the plug is inserted into the socket, the push plate is also inserted into the through hole.

[0009] Furthermore, a card slot is provided on the push plate. During the process of inserting the push plate into the through hole, the push plate replaces the horizontal baffle to press against the bottom of the vertical baffle. The push plate moves to the card slot and enters the bottom of the vertical baffle, so that the vertical baffle loses its support and moves downward under the pressure of the static contact piece with its bottom engaged in the card slot, so that the contact portion contacts the static contact piece.

[0010] Furthermore, a first inclined surface is provided at the bottom of the vertical baffle plate, and a second inclined surface is provided in the card slot. During the process of pulling out the plug from the socket, the second inclined surface abuts against the first inclined surface and drives the vertical baffle plate to abut against the static contact piece outward, so that the static contact piece is separated from the contact portion. The horizontal baffle plate is driven by the first spring to abut against the bottom of the vertical baffle plate again. During the subsequent process of pulling out the plug from the socket, the contact portion will never contact the static contact piece.

[0011] Furthermore, a protrusion is provided on the inner side of the transverse baffle, and a stopper is provided in the mounting groove to block the horizontal movement path of the protrusion, and the stopper prevents the transverse baffle from excessively moving horizontally to one side.

[0012] Furthermore, a plurality of guide columns are provided in the installation groove, and a plurality of guide holes for movably inserting the guide columns are provided on the transverse baffle. During the movement of the transverse baffle, the guide holes move along the guide columns to improve the stability of the transverse baffle during the movement.

[0013] Furthermore, a cover plate is provided at the opening of the mounting groove, a fixing hole is provided on the guide column, and a columnar protrusion fixedly inserted into the fixing hole is provided on the cover plate to fix the cover plate and the mounting groove.

[0014] Furthermore, the transverse baffle is provided with a horizontal first spring hole, and the end of the first spring is inserted into the first spring hole to horizontally elastically connect the transverse baffle and the mounting groove. The vertical baffle is provided with a vertical second spring hole, and the end of the second spring is inserted into the second spring hole to vertically elastically connect the two vertical baffles.

[0015] The present invention proposes a secondary plug-in for a low-voltage cabinet, which has the beneficial effect that, during the process of inserting the plug into the socket, the vertical baffle will push the static contact piece in the socket outward to prevent it from contacting the moving contact piece, so that the contact part will not be worn during the plug insertion process; during the process of pulling the plug out of the socket, the card slot will drive the vertical baffle to move upward, and then the horizontal baffle will move again and push against the bottom of the vertical baffle, and the vertical baffle will push the static contact piece outward again and prevent it from contacting the contact part, so that the contact part will not be worn during the plug removal process. In summary, even after multiple plugging and unplugging, the contact part on the moving contact piece of the present invention will not produce much wear, which improves the stability and reliability of the electrical contact between the moving contact piece and the static contact piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the secondary plug-in in the present invention;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the plug in the present invention;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the socket in the present invention;

[0019] Figure 4 The internal structure of the plug in the present invention is shown in FIG. Figure 1 ;

[0020] Figure 5 The internal structure of the plug in the present invention is shown in FIG. Figure 2 ;

[0021] Figure 6 This is a schematic diagram of the internal structure of the plug when it is inserted into the socket in the present invention;

[0022] Figure 7 This is a schematic diagram of the internal structure of the present invention after the plug is inserted into the socket;

[0023] Figure 8 It is a schematic diagram of the three-dimensional structure of the horizontal plug board in the present invention;

[0024] Fig. 9 It is a schematic diagram of the three-dimensional structure of the vertical plug board in the present invention.

[0025] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0026] 1. Plug; 2. Socket; 3. Mounting slot; 4. Push plate; 5. Horizontal baffle; 6. Vertical baffle; 7. Cover plate; 11. Wiring part; 12. Moving contact piece; 13. Stationary contact piece; 14. Contact part; 15. Positioning pin; 16. Positioning plate; 21. Socket; 22. Positioning hole; 23. Fixing plate; 31. Through hole; 32. Guide column; 33. Fixing hole; 34. Stopper; 35. Groove; 41. Slot; 42. Second inclined surface; 51. First spring; 52. Guide hole; 53. First spring hole; 54. Bump; 61. Second spring; 62. Second spring hole; 63. First inclined surface. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be clearly and completely described below in conjunction with embodiments.

[0028] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work should fall within the scope of protection of this application.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so as to describe the embodiments of the present application described herein.

[0030] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0031] In addition to being used to indicate a position or location relationship, some of the above terms may also be used to indicate other meanings. For example, the term "on" may also be used to indicate a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0032] like Figure 1-Figure 3As shown, it is a preferred embodiment of the present invention, a secondary plug-in for a low-voltage cabinet, the secondary plug-in includes a plug 1 and a socket 2, the plug 1 and the socket 2 can be set as one or more, but placed side by side and close to each other, and the positions of the plug 1 and the socket 2 need to correspond one to one, the outer side of the outermost plug 1 is fixedly provided with a positioning plate 16, the positioning plate 16 is provided with a positioning pin 15, the outer side of the outermost socket 2 is provided with a fixing plate 23, the fixing plate 23 is provided with a positioning hole 22 for the positioning pin 15 to be inserted, the socket 2 is provided with a socket 21 for the plug 1 to be inserted, and a moving contact piece 12 is fixedly installed on the upper and lower sides of each plug 1, and the moving contact piece 12 The end is also provided with a contact portion 14 protruding upward or downward, and a static contact piece 13 is fixedly installed on the upper and lower sides of each socket 21, wherein the tails of the moving contact piece 12 and the static contact piece 13 are provided with a wiring portion 11 for connecting electricity, and the end of the plug 1 and the end of the static contact piece 13 are both arranged in an inclined shape. During the process of the contact portion 14 being inserted into the socket 21, the contact portion 14 contacts the static contact piece 13, and then pushes against it to move upward or downward. After the plug 1 is fully inserted into the socket 21, the contact portion 14 is clamped by the static contact piece 13 to achieve electrical contact between the moving contact piece 12 and the static contact piece 13, and at the same time, the positioning pin 15 is inserted into the positioning hole 22.

[0033] In this embodiment, if Figure 2 As shown, each of the plugs 1 is further provided with a mounting groove 3, in which a horizontally arranged transverse baffle 5 and two vertically arranged vertical baffles 6 are elastically connected, and the end of the transverse baffle 5 abuts between the bottoms of the two vertical baffles 6, and the top of the vertical baffle 6 always protrudes from the contact portion 14. Specifically, the top of the vertical baffle 6 on the upper side is higher than the contact portion 14 on the upper side, and the bottom of the vertical baffle 6 on the lower side is lower than the contact portion 14 on the lower side, as shown in FIG. Figure 3 As shown, a push plate 4 is fixedly provided in the insertion hole 21 .

[0034] Furthermore, if Figure 4-Figure 5 As shown, the end of the mounting groove 3 is further provided with a groove 35 and a through hole 31, and two vertical stoppers 34 are movably arranged at the upper and lower sides of the groove 35, as shown in FIG. Figure 8 As shown, a horizontal first spring hole 53 is provided on the transverse baffle 5, one end of the first spring 51 is inserted into the first spring hole 53, and the other end is in contact with the mounting groove 3, so as to elastically connect the transverse baffle 5 and the mounting groove 3 in the horizontal direction. Fig. 9 As shown, a vertical second spring hole 62 is provided on the vertical baffle plate 6, and two ends of the second spring 61 are respectively inserted into the second spring holes 62 of the two vertical baffle plates 6 to elastically connect the two vertical baffle plates 6 in the vertical direction.

[0035] like Figure 6As shown in FIG. 1 , during the process of inserting the plug 1 into the socket 21, the vertical baffle 6 will contact the static contact piece 13 and push the static contact piece 13 upwards, so that the static contact piece 13 cannot contact the contact portion 14, thereby avoiding the contact portion 14 from being worn due to contact and movement with the static contact piece 13. When the plug 1 is about to be fully inserted into the socket 21, as shown in FIG. Figure 7 As shown, the push plate 4 will also be inserted into the through hole 31. The push plate 4 inserted into the through hole 31 will push the horizontal baffle 5 to move horizontally inward and release the support to the vertical baffle 6. After the vertical baffle 6 loses its support, the static contact piece 13 will press it downward and move it toward the inside of the groove 35 until the static contact piece 13 contacts the contact portion 14, so as to realize the electrical contact between the moving contact piece 12 and the static contact piece 13.

[0036] The push plate 4 can only push the horizontal baffle 5 inward when the plug 1 is inserted into the socket 21, so that the vertical baffle 6 loses the abutment from the horizontal baffle 5, but cannot restore the abutment from the horizontal baffle 5 to the vertical baffle 6 when the plug 1 is pulled out of the socket 21. In order to solve this problem. Fig. 9 As shown, the vertical baffle plate 6 is provided with a first inclined surface 63 on the side away from the through hole 31, and the push plate 4 is also provided with a slot 41. Figure 3 As shown, a second inclined surface 42 matched with the first inclined surface 63 is provided on one side of the slot 41 close to the opening of the insertion hole 21 .

[0037] If the push plate 4 is provided with a card slot 41, when the push plate 4 is inserted into the through hole 31, the horizontal baffle 5 will be pushed out of the bottom of the vertical push plate 4 first, but the vertical baffle 6 will not lose its support at this time, but the end of the push plate 4 will support the vertical baffle 6. As the push plate 4 is gradually inserted, Figure 7 As shown, the bottom of the vertical baffle 6 will eventually be engaged in the slot 41, and its top will no longer protrude from the contact portion 14. The static contact piece 13 will contact the contact portion 14 after losing its abutment. In addition, the engagement of the vertical baffle 6 with the slot 41 can also improve the connection stability between the plug 1 and the socket 2. When the plug 1 is pulled out of the socket 21, the transverse baffle 5 is driven by the first spring 51 and moves toward the bottom of the vertical baffle 6 as the push plate 4 is pulled out of the through hole 31. At this time, the second inclined surface 42 of the slot 41 will abut against the first inclined surface 63, driving the vertical baffle 6 to move toward the outside of the slot 41, so that the transverse baffle 5 will enter and abut against the bottom of the vertical baffle 6 together with the push plate 4, and the static contact piece 13 will be abutted outward by the vertical baffle 6 again and separated from the contact portion 14. In the subsequent process of pulling out the plug 1 from the socket 21, the contact portion 14 will never contact the static contact piece 13.

[0038] Furthermore, if Figure 5 and Figure 8As shown, a protrusion 54 is provided on the inner side of the transverse baffle 5, and a stopper 34 is provided in the mounting groove 3 to block the horizontal movement path of the protrusion 54, so as to prevent the transverse baffle 5 from excessively moving horizontally outward; Figure 4 As shown, a plurality of guide posts 32 are provided in the installation groove 3, and a plurality of guide holes 52 are provided on the transverse baffle 5, which are respectively matched with the guide posts 32. During the movement of the transverse baffle 5, the guide holes 52 move horizontally along the guide posts 32. Furthermore, as shown in FIG. Figure 2 As shown, a cover plate 7 is further provided at the opening of the installation slot 3 , a fixing hole 33 is provided on the guide column 32 , and a columnar protrusion fixedly inserted into the fixing hole 33 is provided on the cover plate 7 to cover the opening of the installation slot 3 .

[0039] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A secondary plug-in for a low-voltage cabinet, the secondary plug-in comprising a plug (1) and a socket (2), the plug (1) being provided with a moving contact piece (12), the socket (2) being provided with a socket (21) for inserting the plug (1) and a stationary contact piece (13) installed inside the socket (21), a protruding contact portion (14) being provided at the end of the moving contact piece (12), characterized in that: The plug (1) is also elastically connected to a transverse baffle (5) and a vertical baffle (6); the top of the vertical baffle (6) protrudes from the contact portion (14) and abuts against the static contact piece (13) from below to prevent the static contact piece (13) from fitting with the contact portion (14); the transverse baffle (5) abuts against the bottom of the vertical baffle (6); and a push plate (4) is also provided on the socket (2); after the plug (1) is inserted into the socket (21), the push plate (4) pushes the transverse baffle (5) to move and releases the abutment on the vertical baffle (6), and then the static contact piece (13) pushes the vertical baffle (6) to move downward and fit with the contact portion (14); The plug (1) is provided with a mounting groove (3), the transverse baffle (5) is horizontally elastically connected to the mounting groove (3) via a first spring (51), the end of the mounting groove (3) is provided with a groove (35) and a through hole (31), a vertical block (34) is provided on the upper and lower sides of the groove (35), the two vertical blocks (34) are vertically elastically connected to each other via a second spring (61), the end of the transverse baffle (5) is abutted between the two vertical blocks (34), and after the plug (1) is inserted into the socket (21), the push plate (4) is also inserted into the through hole (31) in cooperation.

2. The secondary plug-in according to claim 1, characterized in that: The push plate (4) is provided with a slot (41). When the push plate (4) is inserted into the through hole (31), the push plate (4) replaces the horizontal baffle (5) to abut against the bottom of the vertical baffle (6). The push plate (4) moves to the slot (41) and enters the bottom of the vertical baffle (6), so that the vertical baffle (6) loses its abutment and is pressed by the static contact piece (13) to move downward into the slot (41), so that the contact portion (14) contacts the static contact piece (13).

3. The secondary plug-in according to claim 2, characterized in that: A first inclined surface (63) is provided at the bottom of the vertical baffle (6), and a second inclined surface (42) is provided in the slot (41). When the plug (1) is pulled out of the socket (21), the second inclined surface (42) abuts against the first inclined surface (63), driving the vertical baffle (6) to abut against the stationary contact piece (13) outward, so that the stationary contact piece (13) is separated from the contact portion (14), and the horizontal baffle (5) is driven by the first spring (51) and abuts against the bottom of the vertical baffle (6) again.

4. The secondary plug-in according to claim 1, characterized in that: A protrusion (54) is provided on the inner side of the transverse baffle (5), and a stopper (34) is provided in the mounting groove (3) to block the horizontal movement path of the protrusion (54).

5. The secondary plug-in according to claim 4, characterized in that: A plurality of guide columns (32) are provided in the installation groove (3), and a plurality of guide holes (52) for movably inserting the guide columns (32) are provided on the transverse baffle (5).

6. The secondary plug-in according to claim 5, characterized in that: A cover plate (7) is also provided at the opening of the installation groove (3), a fixing hole (33) is provided on the guide column (32), and a columnar protrusion fixedly inserted into the fixing hole (33) is provided on the cover plate (7).

7. The secondary plug-in according to claim 1, characterized in that: The transverse baffle (5) is provided with a horizontal first spring hole (53), and the end of the first spring (51) is inserted into the first spring hole (53) to horizontally elastically connect the transverse baffle (5) and the mounting groove (3). The vertical baffle (6) is provided with a vertical second spring hole (62), and the end of the second spring (61) is inserted into the second spring hole (62) to vertically elastically connect the two vertical baffles (6).

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