Wide-temperature-range stable operation protection structure of power collection terminal

Abstract

The utility model discloses a kind of wide temperature range stable operation protection structure of electric power collection terminal, belong to electric power collection terminal technical field, including: base, base is hollow shell, opening is equipped on it;Cover, cover is installed in the opening of base;Plug-in assembly, plug-in assembly is installed on cover, and plug-in assembly is equipped with the slot of adaptation on base;Wherein, when plug-in assembly inserts inside slot, elastic deformation and the slot wall of slot are connected, the plug-in frame of the utility model is inserted into slot, extruded by trapezoidal abutting frame and generates elastic deformation, its two side walls are opposite to be inclined to make the self-tight type joint of card frame and card mouth, when thermal expansion and cold contraction due to temperature change, corresponding elastic deformation compensation thermal expansion and cold contraction displacement due to temperature change can be generated, avoid the problem of loosening or fracture caused by rigid connection due to traditional structure.

Description

Technical Field

[0001] This utility model relates to the field of power acquisition terminal technology, specifically to a wide-temperature-range stable operation protection structure for power acquisition terminals. Background Technology

[0002] As the core equipment for data acquisition and transmission in power systems, power acquisition terminals are widely used in outdoor substations, distribution substations and other scenarios. They need to operate in a wide temperature range environment for a long time and face harsh conditions such as dust, rain and condensation. Therefore, the "connection stability" and "sealing reliability" of their protective structure directly determine the service life and data acquisition accuracy of the equipment.

[0003] Currently, the cover plate and base of most power acquisition terminals are connected by screw fastening, with metal bolts locking the cover plate and base together. However, in wide temperature range cycling, the difference in thermal expansion coefficients between the bolts and the housing is significant, which can easily lead to stress accumulation in the threaded pair. At low temperatures, the housing shrinks, causing a sudden increase in bolt preload, which may cause bolt stripping or cracking of the housing threaded hole; at high temperatures, the housing expands, causing the bolt preload to decrease, resulting in loosening of the cover plate and allowing external moisture to enter.

[0004] To address the aforementioned issues, this invention provides a wide-temperature-range stable operation protection structure for power acquisition terminals. Utility Model Content

[0005] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide a wide-temperature-range stable operation protection structure for power acquisition terminals. When the insertion frame is inserted into the slot, it undergoes elastic deformation due to the compression of the trapezoidal clamping frame. The two side walls are tilted in opposite directions, causing the frame and the slot to form a self-tightening snap-fit. When thermal expansion and contraction occur due to temperature changes, it can generate corresponding elastic deformation to compensate for the displacement caused by thermal expansion and contraction due to temperature changes, thus avoiding the loosening or breakage problems caused by rigid connections in traditional structures.

[0006] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: This utility model provides a wide-temperature-range stable operation protection structure for a power acquisition terminal, comprising: The base is a hollow shell with an opening. A cover plate, which is installed at an opening in the base; A plug-in assembly is mounted on a cover plate, and the base is provided with a slot adapted to the plug-in assembly; When the plug-in component is inserted into the slot, it undergoes elastic deformation and engages with the slot wall.

[0007] Preferably, the plug-in assembly includes: The insert frame is made of an elastic material and is fixedly installed on the cover plate; Two card frames are fixedly connected to the two sides of the insertion frame, respectively; The slot wall is provided with a slot that is adapted to the card frame.

[0008] Preferably, the insert frame is a hollow structure, and the end facing the bottom side wall of the slot is arc-shaped. When the end of the insert frame facing the bottom side wall of the slot is subjected to a clamping force, the two side walls of the insert frame are inclined in opposite directions. A clamping frame for clamping the insert frame is fixedly connected to the bottom side wall of the slot.

[0009] Preferably, the insertion frame has a groove on one end face facing the bottom side wall of the slot that is adapted to the abutment frame.

[0010] Preferably, the cross-sectional shape of the clamping frame is a trapezoid that is narrower at the top and wider at the bottom.

[0011] Preferably, the card frame is located on one side of the insertion frame near the bottom sidewall of the slot.

[0012] Preferably, a reinforcing frame is provided between the two card frames and inside the insert frame. The reinforcing frame is arched, with its two arch legs fixedly connected to the inner sidewalls on both sides of the insert frame, and the top of the arch abutting against the inner sidewall of the insert frame facing the bottom of the slot.

[0013] Preferably, the shape of the card frame away from the insertion frame is wedge-shaped.

[0014] Preferably, a boss is fixedly connected around the periphery of the contact surface between the cover plate and the base, and a sealing frame adapted to the boss is fixedly connected to the inner side of the base.

[0015] Preferably, a raised strip is fixedly connected to the sealing frame, and a sealing groove adapted to the raised strip is provided on the raised platform.

[0016] The beneficial effects of this utility model are as follows: This invention, through the arrangement of a insertion frame, a slot, and a retaining frame, achieves elastic deformation of the insertion frame when inserted into the slot due to the compression of the trapezoidal retaining frame. The opposing inclinations of its two side walls create a self-tightening engagement between the insertion frame and the slot. The groove at the front end of the insertion frame cooperates with the inclined surface of the trapezoidal retaining frame to form a guiding deformation structure, ensuring uniform force distribution and preventing localized damage. Simultaneously, the arched reinforcing frame inside the insertion frame further tightens the retaining frame, improving the engagement stability between the frame and the slot. When thermal expansion and contraction occur due to temperature changes, it can generate corresponding elastic deformation to compensate for the displacement caused by thermal expansion and contraction, avoiding the loosening or breakage problems caused by rigid connections in traditional structures.

[0017] This invention achieves a first layer of surface contact seal between the boss around the cover plate and the sealing frame of the base by setting up a boss and a sealing frame. Based on the plug-in component and slot, it further blocks the intrusion path of dust and liquid by large-area bonding. The raised strip on the sealing frame and the sealing groove of the boss form a second layer of line contact seal. The elastic deformation of the raised strip fills the tiny gaps to form a labyrinth-like sealing structure, which can significantly improve the waterproof and dustproof level of the terminal and reduce the risk of circuit failure caused by environmental corrosion. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a schematic diagram of a wide-temperature-range stable operation protection structure for a power acquisition terminal provided in an embodiment of the present invention.

[0020] Figure 2 This is an exploded view of the present invention.

[0021] Figure 3 This is a cross-sectional view of the present invention.

[0022] Figure 4 This utility model Figure 3 Enlarged view of point A.

[0023] Figure 5 This is an exploded view of the insert frame and slot of this utility model.

[0024] Figure 6 This is a schematic diagram of the overall structure of the insert frame and the clamping frame of this utility model.

[0025] Figure 7 This utility model Figure 6 Enlarged view of point B.

[0026] Explanation of reference numerals in the attached figures: 1. Base, 2. Cover plate, 3. Slot, 4. Insert frame, 5. Card frame, 6. Bayonet, 7. Clamping frame, 8. Groove, 9. Reinforcing frame, 10. Boss, 11. Sealing frame, 12. Raised strip, 13. Sealing groove. Detailed Implementation

[0027] 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.

[0028] This utility model provides a wide-temperature-range stable operation protection structure for a power acquisition terminal, such as... Figures 1 to 7 As shown.

[0029] Example 1: A wide-temperature-range stable operation protection structure for a power acquisition terminal includes a base 1, which is a hollow rectangular shell made of ABS engineering plastic injection molding. The top of the base 1 has an opening, and a cover plate 2 is installed at the opening. A circuit module is installed inside the base 1. The cover plate 2 is made of the same material as the base 1 and is detachably connected to the base 1 through a plug-in component.

[0030] On the lower surface of the cover plate 2 (the side facing the inside of the base 1), a plug-in assembly is uniformly fixed along the edge. The plug-in assembly includes a plug frame 4. The plug frame 4 is made of high elastic silicone rubber and has a hollow rectangular frame structure. It is fixedly installed on the cover plate 2. On the left and right sides of the plug frame 4 (the sides perpendicular to the insertion direction), a card frame 5 is fixedly connected by an integral molding process. The side of the card frame 5 away from the plug frame 4 is set as a wedge shape, and the inclined surface of the wedge faces the insertion direction. This design can reduce the resistance during insertion.

[0031] Correspondingly, a slot 3 adapted to the plug-in assembly is provided vertically at the edge of the opening of the base 1. On the left and right sides of the slot 3, a slot 6 adapted to the card frame 5 is provided at the position corresponding to the card frame 5. In order to realize the active deformation of the plug frame 4, a clamping frame 7 is fixedly connected to the bottom side wall of the slot 3 by screws. At the same time, a groove 8 adapted to the clamping frame 7 is provided on the end face of the plug frame 4 facing the bottom side wall of the slot 3 (i.e., the lower end face of the plug frame 4). The end of the plug frame 4 is rounded to avoid cracking due to local stress concentration when inserted.

[0032] When assembling the cover plate 2 and the base 1, align the cover plate 2 with the opening of the base 1, align the insertion frame 4 of the insertion assembly with the corresponding slot 3 and press it down: During the insertion process, the arc-shaped end face of the lower end of the insertion frame 4 first contacts the abutting frame 7. As the pressing force increases, the abutting frame 7 gradually embeds into the groove 8 of the insertion frame 4, generating an outward squeezing force on the inner wall of the groove 8. Since the insertion frame 4 is a hollow elastic structure, this squeezing force will cause the left and right side walls of the insertion frame 4 to tilt in opposite directions, thereby driving the locking frame 5 fixed on the side walls to move outward synchronously and engage with the locking slot 6 to form a locking fixation. At this time, the vertical surface of the wedge-shaped locking frame 5 is tightly fitted with the inner wall of the locking slot 6, preventing the cover plate 2 from coming off upward, while the elastic rebound force of the insertion frame 4 ensures that the locking frame 5 always abuts against the groove wall of the locking slot 6, avoiding loosening during initial installation.

[0033] Throughout the process, the hollow structure of the insert frame 4 provides space for the deformation of the side walls, the arc-shaped design at the front end disperses the squeezing force of the clamping frame 7, and the groove 8 guides the clamping frame 7, ensuring that the deformation of the two side walls of the insert frame 4 is uniform and that there will be no damage caused by excessive local stretching, thus achieving a stable connection between the insert component and the slot 3.

[0034] The trapezoidal design of the cross-section of the clamping frame 7 can guide the clamping frame 7 when it is initially inserted into the groove 8, and as the clamping frame 7 gradually embeds into the groove 8, it will exert an outward squeezing force on the inner wall of the groove 8.

[0035] Example 2: Based on Embodiment 1, this embodiment further solves the problem of loosening or breaking of connections caused by thermal expansion and contraction in a wide temperature range environment by setting the reinforcing frame 9. Inside the insertion frame 4 of the insertion component, in the position between the two card frames 5, the reinforcing frame 9 is fixedly installed. The reinforcing frame 9 is made of elastic metal sheet, stamped and formed, and has an overall arched structure. Its two arch feet are fixedly connected to the inner side walls of the left and right sides of the insertion frame 4, respectively. The top of the arch extends naturally and abuts against the inner side of the insertion frame 4 facing the bottom side wall of the slot 3 (i.e., the inner side of the lower end of the insertion frame 4).

[0036] When the terminal is in a high-temperature environment, the base 1 and the cover plate 2 will expand synchronously due to their similar coefficients of thermal expansion. At this time, the width of the slot 3 will increase slightly. If only the elasticity of the insert frame 4 is relied upon, the clamping force of the card frame 5 against the card slot 6 may decrease. At this time, the elasticity of the reinforcing frame 9 will push the card frame 5 to continue to press against the slot wall of the card slot 6, compensating for the gap caused by the expansion of the slot 3 and ensuring that the clamping force does not decrease. At the same time, the fixed connection between the arch of the reinforcing frame 9 and the inner side wall of the insert frame 4 can prevent the side wall of the insert frame 4 from deforming due to excessive stretching and improve the structural strength of the insert frame 4.

[0037] When the terminal is in a low-temperature environment, the base 1 and the cover plate 2 will shrink synchronously, and the slot width of the slot 3 will decrease. At this time, the side wall of the insertion frame 4 will be squeezed by the slot wall of the slot 3: the arched structure of the reinforcing frame 9 will be compressed, and the top of the arch will further press against the inner side of the insertion frame 4 facing the bottom side wall of the slot 3, providing structural support for the insertion frame 4.

[0038] Example 3: On the side of the cover plate 2 facing the base 1, a boss 10 is fixedly connected along the perimeter of the edge of the cover plate 2 by an integral molding process. Correspondingly, a sealing frame 11 that matches the boss 10 is fixedly connected to the inner side of the opening edge of the base 1. When the cover plate 2 is closed on the base 1, the boss 10 will be completely embedded in the inner side of the sealing frame 11 to form a surface contact seal. The boss 10 and the sealing frame 11 form a second layer of protection on the basis of the plug-in assembly and the slot 3.

[0039] To further improve the sealing effect, a protruding strip 12 is fixedly connected to the side of the sealing frame 11 facing the protrusion 10. The protruding strip 12 is a rubber strip with a semi-circular cross-section, which is continuously arranged along the circumference of the sealing frame 11. Correspondingly, a sealing groove 13 adapted to the protruding strip 12 is opened on the side of the protrusion 10 facing the sealing frame 11. When the cover plate 2 is fixed to the base 1 by the plug-in assembly, the cover plate 2 will apply pressure to the base 1, causing the protrusion 10 to gradually embed into the inside of the sealing frame 11: First, the protrusion 10 The outer wall contacts the inner wall of the sealing frame 11 to form a surface contact seal. The large-area contact design can reduce the sealing gap caused by the slight deformation of the base 1 or the cover plate 2 and improve the sealing effect. As the cover plate 2 continues to be installed, the protrusion 12 on the sealing frame 11 will gradually be embedded into the sealing groove 13 of the boss 10. Since the protrusion 12 is made of elastic rubber, it will be squeezed by the inner wall of the sealing groove 13 during the embedding process, and produce elastic deformation, completely filling the internal space of the sealing groove 13 to form a labyrinth seal.

[0040] The surface contact seal between the boss 10 and the sealing frame 11 and the labyrinth seal between the protrusion 12 and the sealing groove 13 can further resist harsh conditions such as outdoor rain erosion, dust accumulation, and condensation on the basis of the plug-in assembly and slot 3, and reduce the risk of internal circuit short circuits, corrosion and other failures caused by moisture or dust intrusion.

[0041] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A wide-temperature-range stable operation protection structure for a power acquisition terminal, characterized in that, include: The base (1) is a hollow shell with an opening. Cover plate (2), said cover plate (2) is installed at the opening on the base (1); A plug-in assembly is mounted on a cover plate (2), and a slot (3) adapted to the plug-in assembly is provided on the base (1). When the plug-in component is inserted into the slot (3), it undergoes elastic deformation and engages with the slot wall (3).

2. The wide-temperature-range stable operation protection structure for a power acquisition terminal as described in claim 1, characterized in that, The plug-in assembly includes: Insert frame (4), the insert frame (4) is made of elastic material, and the insert frame (4) is fixedly installed on the cover plate (2); Two card frames (5) are fixedly connected to the two sides of the insert frame (4); The slot (3) has a slot (6) on its wall that is compatible with the card frame (5).

3. The wide-temperature-range stable operation protection structure for a power acquisition terminal as described in claim 2, characterized in that, The insert frame (4) is a hollow structure, and one end of it facing the bottom side wall of the slot (3) is arc-shaped. When the end of the insert frame (4) facing the bottom side wall of the slot (3) is subjected to a clamping force, the two side walls of the insert frame (4) are tilted in opposite directions. A clamping frame (7) for clamping the insert frame (4) is fixedly connected to the bottom side wall of the slot (3).

4. The wide-temperature-range stable operation protection structure for a power acquisition terminal as described in claim 3, characterized in that, The insert frame (4) has a groove (8) on one end face of the side wall of the slot (3) that is adapted to the abutting frame (7).

5. The wide-temperature-range stable operation protection structure for a power acquisition terminal as described in claim 4, characterized in that, The cross-sectional shape of the clamping frame (7) is a trapezoid, which is narrow at the top and wide at the bottom.

6. The wide-temperature-range stable operation protection structure for a power acquisition terminal as described in claim 3, characterized in that, The card frame (5) is located on one side of the insertion frame (4) near the bottom side wall of the slot (3).

7. The wide-temperature-range stable operation protection structure for a power acquisition terminal as described in claim 6, characterized in that, A reinforcing frame (9) is provided between the two card frames (5) and inside the insert frame (4). The reinforcing frame (9) is arched, and its two arch feet are fixedly connected to the inner sidewalls on both sides of the insert frame (4). The top of the arch abuts against the inner sidewall of the insert frame (4) facing the bottom of the slot (3).

8. The wide-temperature-range stable operation protection structure for a power acquisition terminal as described in claim 2, characterized in that, The shape of the card frame (5) away from the insertion frame (4) is wedge-shaped.

9. The wide-temperature-range stable operation protection structure for a power acquisition terminal as described in claim 1, characterized in that, A boss (10) is fixedly connected around the contact surface between the cover plate (2) and the base (1), and a sealing frame (11) adapted to the boss (10) is fixedly connected on the inner side of the base (1).

10. The wide-temperature-range stable operation protection structure for a power acquisition terminal as described in claim 9, characterized in that, A protruding strip (12) is fixedly connected to the sealing frame (11), and a sealing groove (13) adapted to the protruding strip (12) is provided on the boss (10).

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