Turnover type self-locking buckle for distribution box

Abstract

The utility model belongs to the field of accessories for distribution boxes, and provides a turnover type self-locking buckle for a distribution box, which comprises a latch and a lock plate matched with the latch, the lock plate comprises a main plate part and an end plate part which are integrally formed, the bottom surface of the end plate part is an inclined surface and is used for being in sliding fit with the latch, and a D-shaped opening used for being in self-locking fit with the latch is arranged on the main plate part. The end, away from the end plate part, of the main plate part is provided with a shaft hole, a bolt rotationally matched with the shaft hole is arranged in the shaft hole, the side, facing the distribution box, of the main plate part is provided with a limiting sleeve plate, and the limiting sleeve plate is arranged on the side, away from the end plate part, of the main plate part. The limiting sleeve plate is in threaded connection with the bolt, a limiting column in contact fit with the limiting sleeve plate is arranged on the main plate part, the ascending point of the limiting column is matched with the front side of the limiting sleeve plate, and the descending point of the limiting column is matched with the bottom side of the limiting sleeve plate. The device is reasonable in design, simple in structure, low in cost, convenient to maintain and suitable for large-scale popularization.

Description

Technical Field

[0001] The utility model belongs to the field of accessories for distribution boxes, and in particular relates to a flip-type self-locking buckle for distribution boxes. Background Art

[0002] The distribution box is a circuit distribution box for all users. The distribution box assembles switchgear, measuring instruments, protective devices and auxiliary equipment in a closed or semi-closed metal cabinet or on a screen according to the electrical wiring requirements to form a low-voltage distribution device. During normal operation, the circuit can be connected or disconnected with the help of manual or automatic switches.

[0003] Generally, a self-locking structure is provided on the door of the distribution box so that the distribution box can be self-locked and can be opened quickly when it needs to be opened. The existing patent CN202123249697.0 discloses a self-locking distribution cabinet, including a main box body of the distribution cabinet, a door, a support rod, a self-locking device for the upper cover, and a hinge seat. A door is provided on the main box body of the distribution cabinet, one side of the door is hinged to one end of the support rod through a hinge seat, and a self-locking device for the upper cover is provided on the upper end of the main box body of the distribution cabinet; when the pulley rolls into the slot, the photoelectric sensor senses the receiving seat and feeds back the information to the processor in the distribution cabinet. When the staff leaves without closing the door, the processor will start the motor, the motor drives the screw rod to rotate, the screw rod moves the card seat through the screw sleeve, the card seat moves the sleeve through the receiving seat, and the sleeve closes the door through the support rod, thereby avoiding damage to the inside of the distribution cabinet caused by external factors due to the staff forgetting to close the door. The self-locking structure adopts electric drive, which not only needs to ensure the connection reliability of the circuit, but also has the problem of high cost and inconvenience for daily maintenance. Utility Model Content

[0004] The utility model aims at the technical problems existing in the self-locking structure for the above-mentioned distribution box and proposes a flip-over self-locking buckle for the distribution box which has reasonable design, simple structure, low cost and is easy to maintain.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is that the utility model provides a flip-up self-locking buckle for a distribution box, including a door bolt and a lock plate cooperating with the door bolt, the lock plate includes an integrally formed main board portion and an end plate portion, the bottom surface of the end plate portion is an inclined surface and is used to slide with the door bolt, the main board portion is provided with a D-shaped opening for self-locking with the door bolt, the bottom of the D-shaped opening is connected with the bottom surface of the main board portion, the D-shaped opening includes a curved surface portion and a straight surface portion, the curved surface portion faces the direction of the end plate portion, and a pressure core is slidably provided on the straight surface portion. The pressure core is used to contact and extrude with the door latch, and an axial hole is provided at one end of the main board portion away from the end plate portion, and a bolt that rotates and cooperates with the main board portion is provided in the axial hole, and one end of the bolt is used to be installed on the distribution box, and a limit sleeve is provided on the side of the main board portion facing the distribution box, and the limit sleeve is threadedly connected with the bolt, and the limit sleeve is a U-shaped structure. A limit column that contacts and cooperates with the limit sleeve is provided on the main board portion, and the upward point of the limit column cooperates with the front side of the limit sleeve, and the downward point of the limit column cooperates with the bottom side of the limit sleeve.

[0006] Preferably, the end plate portion is provided with an arc-shaped wrench piece on the side thereof facing away from the distribution box.

[0007] Preferably, the pressure core comprises a horizontal circular tube, a T-shaped slider is provided on the side of the circular tube facing the straight surface portion, a slide groove movably engaged with the T-shaped slider is provided on the straight surface portion, and a blocking plate is provided at the bottom end of the slide groove.

[0008] Preferably, the limiting sleeve is provided with an inner arc plate at a position close to the bolt, the inner arc plate is connected to the bolt, a limiting tube is provided on the inner arc plate, and the limiting tube cooperates with the countersunk hole provided on the main board.

[0009] Preferably, a ring groove is provided on the side of the door latch, a rolling ring is provided in the ring groove, and the rolling ring is movably matched with the plate edge of the lock plate.

[0010] Compared with the prior art, the advantages and positive effects of the utility model are:

[0011] 1. The utility model provides a flip-type self-locking buckle for a distribution box. The door bolt moves with the box door of the distribution box, and the lock plate can rotate around the connection node of the bolt on the distribution box. The door bolt moves along the inclined surface of the lock plate to rotate the lock plate until the door bolt enters the D-shaped opening and the lock plate automatically falls to achieve self-locking; the pressure core can improve the self-locking reliability of the door bolt and the lock plate; the limit sleeve can limit the upward and downward points of the lock plate, which is beneficial to improve the self-locking efficiency of the device. The device has a reasonable design, simple structure, low cost and is easy to maintain, and is suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 It is a self-locking axonometric drawing of a flip-type self-locking buckle for a distribution box;

[0014] Figure 2 It is a self-locking axonometric drawing of a flip-type self-locking buckle for a distribution box in another direction;

[0015] Figure 3 It is a self-locking rear view of a flip-type self-locking buckle for a distribution box;

[0016] Figure 4 It is a front view of unlocking a flip-type self-locking buckle for a distribution box;

[0017] Figure 5 It is a cross-sectional view of a flip-type self-locking buckle for a distribution box in the FF direction;

[0018] Figure 6 It is a cross-sectional view of a flip-type self-locking buckle for a distribution box in the HH direction;

[0019] In the above figures, 1. latch; 2. lock plate; 21. main plate; 22. end plate; 23. D-shaped opening; 23a. curved surface; 23b. straight surface; 24. limit column; 25. wrench piece; 26. slide groove; 3. pressure core; 31. round tube; 32. T-shaped slider; 4. bolt; 5. limit sleeve; 51. inner arc plate; 52. limit tube; 6. blocking plate; 7. rolling ring. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear below, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0022] Examples, such as Figures 1 to 6As shown, the utility model provides a flip self-locking buckle for a distribution box, comprising a door bolt 1 and a lock plate 2 matched with the door bolt 1, wherein the lock plate 2 comprises an integrally formed main board portion 21 and an end plate portion 22, wherein the bottom surface of the end plate portion 22 is an inclined surface and is used to slide with the door bolt 1, and a D-shaped opening 23 for self-locking with the door bolt 1 is provided on the main board portion 21, wherein the bottom of the D-shaped opening 23 is connected with the bottom surface of the main board portion 21, and the D-shaped opening 23 comprises a curved surface portion 23a and a straight surface portion 23b, wherein the curved surface portion 23a faces the direction of the end plate portion 22, and a pressure core 3 is slidably provided on the vertical portion, The pressure core 3 is used for contacting and extruding with the door latch 1. The main board portion 21 is provided with an axial hole at one end away from the end plate portion 22. A bolt 4 rotatably matched therewith is provided in the axial hole. One end of the bolt 4 is used to be installed on the distribution box. A limit sleeve 5 is provided on the side of the main board portion 21 facing the distribution box. The limit sleeve 5 is threadedly connected with the bolt 4. The limit sleeve 5 is a U-shaped structure. A limit column 24 contacting and matching with the limit sleeve 5 is provided on the main board portion 21. The upward point of the limit column 24 matches with the front side of the limit sleeve 5, and the downward point of the limit column 24 matches with the bottom side of the limit sleeve 5.

[0023] In this device, the bolt 1 is installed on the side of the door of the distribution box and moves synchronously with it, and the lock plate 2 is installed on the box body of the distribution box through the bolt 4 and rotates around the connection node of the bolt 4 on the distribution box. This device has no other energy-consuming power elements. Its main working principle is that the bolt 1 starts to move along the inclined surface of the lock plate 2 under the drive of the box door, which can lift the lock plate 2 until the bolt 1 enters the D-shaped opening 23 and the lock plate 2 automatically falls to achieve self-locking. Furthermore, the pressure core 3 rises and falls along the straight surface portion 23b as the bolt 1 enters the D-shaped opening 23 until the bolt 1 is fully in place in the D-shaped opening 23, and then presses on the bolt 1 through its gravity, which can improve the self-locking reliability of the bolt 1 and the lock plate 2. Furthermore, the limit sleeve 5 can limit the upward and downward points of the lock plate 2. When the lock plate 2 turns around the bolt 4, the limit column 24 has a corresponding range of motion inside the limit sleeve 5, but its maximum motion distance is limited and reaches the maximum at the upward and downward points, respectively, so that the lock plate 2 can be prevented from turning too much and turning too much, which is conducive to improving the self-locking efficiency of the device. The device has a reasonable design, a simple structure, a low cost and is easy to maintain.

[0024] In order to facilitate manual unlocking, the utility model provides an arc-shaped wrench piece 25 on the side of the end plate 22 facing away from the distribution box. By manually moving the wrench piece 25 upward, the lock plate 2 can be separated from the door bolt 1, thereby opening the box door of the distribution box.

[0025] In order to improve the activity performance of the pressure core 3, the pressure core 3 provided by the utility model includes a horizontal circular tube 31, and the circular tube 31 is provided with a T-shaped slider 32 on the side of the circular tube 31 facing the straight surface portion 23b, and the straight surface portion 23b is provided with a slide groove 26 that movably cooperates with the T-shaped slider 32, and the bottom end of the slide groove 26 is provided with a blocking plate 6, which is used to prevent the T-shaped slider 32 from sliding out of the slide groove 26. After the circular tube 31 comes into contact with the door bolt 1, the T-shaped slider 32 can move along the slide groove 26 at the same time, thereby generating displacement and allowing the door bolt 1 to effectively enter the self-locking range of the D-shaped mouth 23.

[0026] In order to improve the activity performance of the self-locking plate 2, the utility model provides an inner arc plate 51 on the limit sleeve 5 near the bolt 4, the inner arc plate 51 is connected to the bolt 4, a limit tube 52 is provided on the inner arc plate 51, the limit tube 52 cooperates with the countersunk hole provided on the main board part 21, the inner wall of the limit tube 52 is a smooth surface, which can play the role of a bearing, and also plays the role of limiting, so that the locking plate 2 can perform a stable flipping action around the center of the bolt 4.

[0027] In order to improve the matching performance between the door bolt 1 and the lock plate 2, the utility model is provided with an annular groove on the side of the door bolt 1, and a rolling ring 7 is provided in the annular groove. The rolling ring 7 is movably matched with the plate edge of the lock plate 2. The rolling ring 7 can reduce the sliding friction between the door bolt 1 and the lock plate 2, improve the passability of the door bolt 1 under the inclined surface of the lock plate 2, and help to extend the actual service life of the door bolt 1.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A flip-type self-locking buckle for a distribution box, comprising a latch and a lock plate cooperating with the latch, characterized in that: The lock plate comprises an integrally formed main board portion and an end plate portion, the bottom surface of the end plate portion is an inclined surface and is used to slide with the door bolt, the main board portion is provided with a D-shaped opening for self-locking with the door bolt, the bottom of the D-shaped opening is connected to the bottom surface of the main board portion, the D-shaped opening comprises a curved surface portion and a straight surface portion, the curved surface portion faces the direction where the end plate portion is located, and a pressure core is slidably provided on the straight surface portion, and the pressure core is used to contact and squeeze with the door bolt, the main board portion is provided with an axial hole at one end away from the end plate portion, a bolt is provided in the axial hole to rotate with it, one end of the bolt is used to be installed on the distribution box, a limiting sleeve is provided on the side of the main board portion facing the distribution box, the limiting sleeve is threadedly connected with the bolt, the limiting sleeve is a U-shaped structure, and a limiting column is provided on the main board portion to contact and cooperate with the limiting sleeve, the upward point of the limiting column cooperates with the front side of the limiting sleeve, and the downward point of the limiting column cooperates with the bottom side of the limiting sleeve.

2. The flip-type self-locking buckle for a distribution box according to claim 1, characterized in that: The end plate portion is provided with an arc-shaped wrench piece on a side thereof facing away from the distribution box.

3. The flip-type self-locking buckle for a distribution box according to claim 2, characterized in that: The pressing core comprises a horizontal round tube, a T-shaped slider is arranged on the side of the round tube facing the straight surface, a slide groove movably matched with the T-shaped slider is arranged on the straight surface, and a blocking plate is arranged at the bottom end of the slide groove.

4. The flip-type self-locking buckle for a distribution box according to claim 3, characterized in that: The limiting sleeve is provided with an inner arc plate at a position close to the bolt, the inner arc plate is connected to the bolt, a limiting tube is provided on the inner arc plate, and the limiting tube cooperates with a countersunk hole provided on the main board.

5. The flip-type self-locking buckle for a distribution box according to claim 1, characterized in that: A ring groove is arranged on the side of the door bolt, a rolling ring is arranged in the ring groove, and the rolling ring is movably matched with the plate edge of the lock plate.

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