A locking structure for securing the upper transition terminal

Abstract

This invention proposes a locking structure for fixing an upper-mounted transition terminal, including a fixing clip. The fixing clip includes at least two locking parts for engaging with the main body of the electrical box and a clip body connected between the locking parts. The clip body has a limiting part that engages with the transition terminal; and the clip body has a through hole for the relay pin or transition terminal to pass through. This invention, through the locking of the fixing clip with the electrical box, can limit the transition terminal installed on the electrical box, ensuring a tight connection between the busbar, the transition terminal, and the electrical box. This prevents the transition terminal from falling off during relay disassembly, reduces the difficulty of repeated installation, and prevents damage to the transition terminal.

Description

Technical Field

[0001] This utility model relates to the field of electrical box technology, and in particular to a limiting member for fixing transition terminals. Background Technology

[0002] Currently, the power supply for relays in plug-in electrical boxes comes from two sources: jumper power and direct busbar power. Jumper power involves connecting the relays to the upstream devices in series or parallel using wires. Direct busbar power, on the other hand, typically uses transition terminals for connection.

[0003] Busbars with transition terminals can be installed on electrical boxes using either top-mounting or bottom-mounting methods. Bottom-mounting uses integrated clips for secure mounting, and this is the most common method for busbars. However, in special cases, it may be necessary to install the busbar from the top.

[0004] Because the busbar is mounted on top and the transition terminals are installed vertically downwards, there is a high probability that the transition terminals will detach during relay disassembly if they are not secured. This will not only cause difficulties in subsequent installation but also easily damage the transition terminals. Furthermore, due to the draft angle, the upper gap of the busbar is relatively large, making it easy to insert at an angle or install it improperly, which can lead to poor relay power supply during vibration.

[0005] Publication application CN119674585A, published on March 21, 2025, discloses a busbar for suppressing vibration propagation. The busbar has a flat base and a male-shaped busbar terminal connection portion that rises from the base. The busbar terminal connection portion is electrically connected to a relay terminal connection portion of a relay component via a relay terminal accessory. A reinforcing rib is provided at least one portion of the busbar base that protrudes from the plane of the base, suppressing shape deformation caused by vibrations transmitted to the busbar terminal connection portion that accompany the drive of the relay component. This application also discloses a top-mounted transition terminal, but does not disclose a limiting member for fixing the transition terminal, resulting in the problem that the transition terminal is easily detached during relay disassembly. Summary of the Invention

[0006] To address the aforementioned technical problems, this utility model proposes a locking structure for fixing the upper transition terminal, which solves the problem that the upper transition terminal is easily detached during relay disassembly in the prior art.

[0007] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0008] A fastening structure for securing an upper-mounted transition terminal includes a fastening clip. The fastening clip comprises at least two engaging portions for engaging with the main body of an electrical box, and a clip body connected between the engaging portions. The clip body has a limiting portion that engages with the transition terminal; and the clip body has a through hole for a relay pin or transition terminal to pass through. This invention, through the fastening clip engaging with the electrical box, can limit the transition terminal installed on the electrical box, ensuring a tight connection between the busbar, the transition terminal, and the electrical box. This prevents the transition terminal from falling off during relay disassembly, reduces the difficulty of repeated installation, and prevents damage to the transition terminal.

[0009] Furthermore, the latching part is a hook arm extending downward from the side of the latch body; each side of the latch body is provided with a hook arm.

[0010] Furthermore, the main body of the electrical box is provided with two mounting platforms corresponding to the mounting arms, and the mounting arms are provided with mounting platform grooves that cooperate with the mounting platforms.

[0011] Furthermore, to prevent the fixing clips from causing the insertion holes to misalign with the transition terminal insertion ports, the two mounting brackets are made with different widths and / or heights to prevent errors.

[0012] Furthermore, to prevent the transition terminal from being pulled upwards and falling off when the relay is pulled upwards for disassembly, the limiting part is a limiting surface provided on the lower side of the clip body, and the limiting surface abuts against the top of the transition terminal.

[0013] Furthermore, in order not to obstruct the insertion of the relay pin into the transition terminal, the through hole is an insertion hole for the relay pin to pass through and then be inserted into the transition terminal.

[0014] Furthermore, in order to guide the relay pins into the insertion hole, a guide ramp is provided on the inner side of the insertion hole to guide the relay pins.

[0015] Furthermore, in order to ensure a stable connection between the relay and the transition terminal, the transition terminal is provided with a bent spring plate for securing the relay pins.

[0016] Furthermore, a busbar pin is inserted into the lower part of the transition terminal.

[0017] Furthermore, the main body of the electrical box is provided with a limiting groove for installing transition terminals and part of the busbar, and the mounting platform is provided on the outer walls of both sides of the limiting groove.

[0018] The beneficial effects of this utility model are:

[0019] 1. This utility model uses a fixing clip to snap into the electrical box, which can limit the transition terminal installed on the electrical box, so that the busbar, transition terminal and electrical box can be tightly connected;

[0020] 2. This utility model provides guidance through a guide ramp, ensuring that the relay pins are correctly installed on the transition terminal, while also ensuring that the transition terminal secures the relay pins, thus guaranteeing the connection stability between the upper busbar and the relay;

[0021] 3. The fixing clip of this utility model prevents the transition terminal from falling off during the disassembly of the relay, reduces the difficulty of repeated installation, and prevents damage to the transition terminal;

[0022] 4. The fixing clip of this utility model can be adapted to different relays by changing the size of the insertion hole. Different sizes of insertion holes are designed according to the pin size of different relays, and the guide ramp provides guidance. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0026] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the clip of this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the busbar of this utility model.

[0029] In the diagram: 1. Fixing clip, 11. Guide ramp, 12. Insertion hole, 13. Clip body, 14. Clip arm, 2. Transition terminal, 3. Busbar, 31. Busbar pin, 4. Electrical box body, 41. Mounting stand, 5. Relay, 51. Relay pin. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] like Figures 1-3 As shown in Embodiment 1 of this utility model, a fastening structure for fixing an upper transition terminal includes a fixing clip 1 disposed between the electrical box body 4 and the relay 5. The electrical box body 4 is connected to a busbar 3, and the busbar pin 31 and the relay pin 51 are connected through a transition terminal 2. The fixing clip 1 is used to limit and fix the transition terminal 2, preventing the transition terminal from falling off during relay disassembly without fixing, thus avoiding subsequent installation difficulties and damage to the transition terminal. The fixing clip 1 includes at least two engaging parts for engaging with the electrical box body 4 and a clip body 13 connected between the engaging parts. In this embodiment, the fixing clip 1 includes a clip body 13 and a hanging arm 14 disposed on the side of the clip body 13 and extending downward; and a hanging arm 14 is provided on each side of the clip body 13. Figure 1 and Figure 2 As shown, the main body 4 of the electrical box is provided with two mounting platforms 41 corresponding to the mounting arms 14, and the mounting arms 14 are provided with mounting platform grooves that cooperate with the mounting platforms 41.

[0032] Furthermore, the clip body 13 is provided with a limiting part that cooperates with the limiting part of the transition terminal 2; and the clip body 13 is provided with a through hole for the relay pin 51 or the transition terminal 2 to pass through. The transition terminal 2 can be located on the lower side of the clip body 13 and limited by the clip body 13, so that when the relay is pulled upwards for removal, the transition terminal will not be pulled off, and the relay pin 51 can be inserted into the transition terminal 2 after passing through the through hole. In another embodiment, the upper end of the transition terminal 2 protrudes from the through hole, allowing the relay pin 51 to be directly inserted into the transition terminal 2; and the outer side of the transition terminal 2 near the upper end is provided with a limiting structure that cooperates with the limiting part to prevent the relay from being pulled off when the transition terminal is removed.

[0033] Example 2 differs from Example 1 in that, as Figure 2 As shown, the limiting part is a limiting surface located on the lower side of the clip body 13, which abuts against the top of the transition terminal 2, meaning the transition terminal 2 is located on the lower side of the clip body 13. Furthermore, the through hole is an insertion hole 12 for the relay pin 51, allowing the relay pin 51 to pass through and be inserted into the transition terminal 2. In this embodiment, the electrical box body 4 is provided with a limiting groove for installing and accommodating the transition terminal 2 and part of the busbar 3. The upper opening of the limiting groove allows the transition terminal 2 to be mounted inside the electrical box body 4. The mounting platform 41 is located on the upper outer walls of both sides of the limiting groove. The clip body 13 spans the limiting groove and the top terminal of the transition terminal 2, allowing the mounting arms 14 on both sides to engage with the mounting platform 41.

[0034] Example 3 differs from Example 2 in that, as Figure 2 As shown, the upper part of the transition terminal 2 is used to insert the relay pin 51. The lower part of the transition terminal 2 is used to insert the busbar pin 31. Figure 5 As shown, the busbar pin 31 is inserted into the transition terminal 2 from the bottom. A curved spring is provided on the upper side of the transition terminal 2 to lock the relay pin 51.

[0035] Example 4 differs from Example 3 in that, as Figure 2 As shown, since the transition terminal 2 has an asymmetrical structure, the insertion hole 12 of the fixing clip 1 must be aligned with the insertion hole of the transition terminal 2. To prevent incorrect installation, i.e., to prevent the fixing clip 1 from being installed backwards, the width and / or height of the two mounting platforms 41 are different. Correspondingly, the width and / or height of the mounting platform slots on the two mounting arms 14 are also different, so that the two mounting platform slots can only mate with the corresponding mounting platform 41, thus preventing incorrect installation. In this embodiment, as... Figure 4 As shown, the widths of the two mounting slots are different, and correspondingly, the widths of the two mounting platforms 41 are also different.

[0036] Example 5 differs from Example 2 in that, as Figure 4 As shown, the inner side of the insertion hole 12 is provided with a guide ramp 11 for guiding the relay pin 51. That is, a ramp is provided on the side of the upper port of the insertion hole 12 to cooperate with the side of the relay pin 51, so as to guide the relay pin 51 into the insertion hole 12.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions of some or all of the technical features therein, within the spirit and principles of the present utility model, shall not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present utility model, and shall all be included within the protection scope of the present utility model.

Claims

1. A locking structure for fixing an upper-mounted transition terminal, characterized in that, Includes a fixing clip (1), which includes at least two clipping parts for engaging with the electrical box body (4) and a clip body (13) connected between the clipping parts. The clip body (13) is provided with a limiting part that engages with the transition terminal (2); and the clip body (13) is provided with a through hole for the relay pin (51) or the transition terminal (2) to pass through.

2. The clamping structure for fixing the upper transition terminal according to claim 1, characterized in that, The latching part is a hook arm (14) extending downward from the side of the latch body (13); each side of the latch body (13) is provided with a hook arm (14).

3. The clamping structure for fixing the upper transition terminal according to claim 2, characterized in that, The main body (4) of the electrical box is provided with two mounting platforms (41) corresponding to the mounting arms (14), and the mounting arms (14) are provided with mounting platform grooves that cooperate with the mounting platforms (41).

4. The clamping structure for fixing the upper transition terminal according to claim 3, characterized in that, The two mounting platforms (41) have different widths and / or heights for error prevention.

5. The locking structure for fixing the upper transition terminal according to any one of claims 1 to 4, characterized in that, The limiting part is a limiting surface provided on the lower side of the clip body (13), and the limiting surface abuts against the top of the transition terminal (2).

6. The locking structure for fixing the upper transition terminal according to any one of claims 1 to 4, characterized in that, The perforation is a insertion hole (12) through which the relay pin (51) passes and is inserted into the transition terminal (2).

7. The locking structure for fixing the upper transition terminal according to claim 6, characterized in that, The inner side of the insertion hole (12) is provided with a guide ramp (11) for guiding the relay pin (51).

8. The locking structure for fixing the upper transition terminal according to claim 6, characterized in that, The transition terminal (2) is provided with a bent spring sheet for locking the relay pin (51).

9. The locking structure for fixing the upper transition terminal according to claim 8, characterized in that, The transition terminal (2) is fitted with a busbar pin (31) at its lower part.

10. The locking structure for fixing the upper transition terminal according to claim 3 or 4, characterized in that, The electrical box body (4) is provided with a limiting groove for installing the transition terminal (2) and part of the bus bar (3), and the mounting platform (41) is set on the outer walls of both sides of the limiting groove.

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