Small mining power supply structure

Abstract

The utility model discloses a small-sized mining power supply structure, which comprises a base and a shell arranged on the base, the shell is provided with a mounting cavity with a downward opening, a circuit board is arranged in the mounting cavity, wiring screws positioned at two end parts are integrated on the circuit board, and the wiring screws are arranged on the base. The housing is provided with a groove hole for the wiring screw to extend out. An insulating heat-conducting silica gel sheet is arranged on the base, the bottom of the shell and the insulating heat-conducting silica gel sheet are pressed tightly, and the shell is filled with insulating heat-conducting silica gel; a transparent shield is mounted on the shell; after the insulating heat-conducting silica gel sheet is arranged on the base to seal the opening of the shell, the mounting cavity is filled with the insulating heat-conducting silica gel to wrap the internal circuit board, so that on one hand, the circuit board has a good anti-vibration effect; on the other hand, heat generated on the circuit board is quickly transmitted outwards through the insulating heat-conducting silica gel sheet and the base through the heat-conducting effect of the insulating heat-conducting silica gel, so that the heat dissipation effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mine power supply equipment, in particular to a small mine power supply structure. Background Art

[0002] In underground explosion-proof and intrinsically safe or intrinsically safe electrical equipment in coal mines, sensor signal acquisition is generally intrinsically safe signal, which needs to be powered by intrinsically safe power supply. Intrinsically safe power supply needs to be installed inside the equipment to power the intrinsically safe module. Due to the space limitation of the installation equipment, the space occupied by the intrinsically safe power supply should be as small as possible. However, the current intrinsically safe power supply structure is generally relatively large in size, and has poor vibration resistance in vibration situations, and also has poor heat dissipation. Utility Model Content

[0003] 1. Technical issues

[0004] The utility model aims to provide a small power supply structure for mining, so as to solve the problems that the existing power supply structure has a large volume and poor vibration resistance and heat dissipation effects.

[0005] (II) Technical solution

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A small mining power supply structure comprises a base and a shell mounted on the base, the shell having a downwardly open mounting cavity, a circuit board mounted in the mounting cavity, the circuit board having wiring screws integrated at both ends, the shell having groove holes for extending the wiring screws; an insulating thermally conductive silicone sheet is provided on the base, the bottom of the shell is pressed against the insulating thermally conductive silicone sheet, the shell is filled with insulating thermally conductive silicone; a transparent protective cover is installed on the shell.

[0008] Preferably, the inner wall of the housing is provided with symmetrical ribs, and the side surfaces of the circuit board abut against the ribs.

[0009] Preferably, the shell is provided with a plurality of buckle structures located at the edges of its openings, and the base is provided with buckle grooves for inserting the buckle structures.

[0010] Preferably, the shell is provided with two symmetrically arranged ear seats, and the ear seats are provided with a U-shaped opening for inserting a fastener; the base is provided with a fastening hole corresponding to the U-shaped opening, and the fastener passes through the U-shaped opening and is locked on the fastening hole.

[0011] Preferably, the shell is provided with a plurality of symmetrically arranged limiting protrusions, and the transparent shield is provided with limiting holes for snapping into the limiting protrusions.

[0012] Preferably, the transparent protective cover is provided with an opening groove between two limiting protrusions on the same side, and the opening groove exposes a portion of the outer shell.

[0013] Preferably, a mounting groove is provided on the top of the housing, an introduction hole for injecting insulating thermally conductive silica gel is provided in the mounting groove, and a label for sealing the introduction hole is affixed in the mounting groove.

[0014] Preferably, a mounting groove is provided on the base, and the opening edge of the shell is inserted into the mounting groove.

[0015] Preferably, the base is made of aluminum, and the shell is made of plastic.

[0016] (III) Beneficial effects

[0017] After the opening of the housing is sealed by arranging an insulating thermally conductive silicone sheet on the base, the insulating thermally conductive silicone is filled into the installation cavity to cover the internal circuit board. On the one hand, the circuit board can have a good anti-vibration effect. On the other hand, the heat generated on the circuit board can be quickly transferred to the outside through the insulating thermally conductive silicone sheet and the base through the thermal conductivity of the insulating thermally conductive silicone, thereby improving the heat dissipation effect.

[0018] At the same time, the installation cavity is reasonably arranged to position the circuit board, and the wiring screws for the specific connecting wires are extended out of the shell to minimize the internal space and facilitate quick wiring outside the shell;

[0019] The wiring status needs to be viewed visually. The transparent cover can be used to insulate the wiring parts. In addition to providing protection, the current wiring status can also be viewed visually.

[0020] The overall structure is simple, and the volume of the entire power supply structure is reduced after the outer shell volume is compressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0022] Figure 2 It is a partial cross-sectional structural schematic diagram of an embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the explosion structure of an embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of a top-down stereoscopic structure of a housing in an embodiment of the utility model;

[0025] Figure 5 This is a bottom-up three-dimensional structural schematic diagram of the housing in the embodiment of the utility model;

[0026] exist Figures 1 to 5In the figure, the corresponding relationship between the component names or lines and the figure numbers is as follows:

[0027] Base 1, shell 2, installation cavity 3, circuit board 4, wiring screw 5, groove hole 6, insulating thermal conductive silicone sheet 7, transparent shield 8, rib 9, buckle structure 10, buckle groove 11, ear seat 12, U-shaped opening 120, fastening hole 13, limiting protrusion 14, limiting hole 15, opening groove 16, installation groove 17, introduction hole 18, sign 19, installation groove 20. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] See also Figure 1-Figure 5 As shown, in the embodiment of the utility model, a small mining power supply structure is proposed. The circuit part for realizing power conversion is an existing mature technology. This embodiment mainly improves the relevant structure for installing the circuit part to achieve vibration resistance and improve the heat dissipation effect. Specifically, it includes a base 1 and a shell 2 installed on the base 1. The shell 2 has a mounting cavity 3 that opens downward. A circuit board 4 is installed in the mounting cavity 3. After the circuit board 4 is installed in the shell 2, the shell 2 is sealed by the base 1, and the circuit board 4 is sealed in the mounting cavity 3. At the same time, the circuit board 4 is integrated with wiring screws 5 at both ends. The shell 2 is provided with a groove hole 6 for extending the wiring screw 5. The wiring screw 5 is extended out of the shell 2 to facilitate wiring operation. At the same time, it can effectively reduce the space occupied by the internal circuit board 4, and the size of the shell 2 can be further reduced. At the same time, an independent groove hole 6 is used to achieve isolation of the wiring screw 5 to avoid short circuit. The circuit board 4 is an integral structure integrated with power conversion related devices, which is an existing mature product.

[0030] At the same time, an insulating thermally conductive silicone sheet 7 is provided on the base 1, the bottom of the shell 2 is pressed against the insulating thermally conductive silicone sheet 7, the shell 2 is filled with insulating thermally conductive silicone, and the opening of the shell 2 is further sealed by the insulating thermally conductive silicone sheet 7, so that the internal installation cavity 3 is a closed space, and the insulating thermally conductive silicone is filled inside to cover the entire circuit board 4, which can achieve an anti-vibration effect on the one hand, and quickly transfer the heat generated by the circuit board 4 to the outside on the other hand, and also has insulation performance.

[0031] Specifically, a mounting groove 20 is provided on the base 1 , and the opening edge of the shell 2 is inserted into the mounting groove 20 . The shell 2 can be inserted into the mounting groove 20 , thereby reducing the height of the entire power supply structure.

[0032] At the same time, the base 1 is made of aluminum, and the shell 2 is made of plastic, wherein the shell 2 is insulated, and the base 1 can further accelerate the heat dissipation to the outside.

[0033] In order to facilitate protection after external wiring and to visually check the wiring status, a transparent protective cover 8 is installed on the housing 2.

[0034] Specifically, symmetrical ribs 9 are provided on the inner wall of the shell 2, and the side surfaces of the circuit board 4 abut against the ribs 9. The side surface of the circuit board 4 is limited by the ribs 9, and whether the circuit board 4 is installed in place is judged by the depth of the circuit board 4 pushed relative to the ribs 9.

[0035] When connecting the shell 2 to the base 1, it is necessary to initially position the shell 2 to achieve a quick connection. Specifically, the shell 2 is provided with a plurality of snap structures 10 located at the edge of its opening, and the base 1 is provided with a snap groove 11 for inserting the snap structure 10; by pressing the shell 2 onto the base 1, the snap structure 10 cooperates with the snap groove 11 to achieve a preliminary limited connection.

[0036] At the same time, two symmetrically arranged ear seats 12 are provided on the shell 2, and the ear seats 12 are provided with a U-shaped opening 120 for inserting a fastener. A fastening hole 13 corresponding to the U-shaped opening 120 is opened on the base 1. The fastener passes through the U-shaped opening 120 and is locked in the fastening hole 13. The fastener is further fastened to the fastening hole 13 after passing through the ear seats 12, thereby fixing the shell 2 and the base 1.

[0037] The transparent protective cover 8 can be removed relative to the outer shell 2 for wiring, and it needs to be limited after the cover is closed. Specifically, a plurality of symmetrically arranged limiting protrusions 14 are provided on the outer shell 2, and a limiting hole 15 for snapping the limiting protrusion 14 is provided on the transparent protective cover 8. After the cover is closed, the limiting protrusion 14 extends into the limiting hole 15 to achieve limiting.

[0038] At the same time, when removing the transparent protective cover 8, it is necessary to separate the limiting protrusion 14 from the limiting hole 15. Specifically, an opening groove 16 is provided on the transparent protective cover 8 between the two limiting protrusions 14 on the same side, and the opening groove 16 exposes a part of the shell 2. By using the part of the shell 2 exposed from the opening groove 16, the limiting protrusion 14 can be withdrawn from the limiting hole 15 and separated by relative pulling.

[0039] The connection mode of the power supply and the corresponding parameters need to be displayed intuitively, and the position for introducing the insulating thermally conductive silicone rubber is also required. Therefore, a mounting groove 17 is provided on the top of the shell 2, and an introduction hole 18 for pouring the insulating thermally conductive silicone rubber is opened in the mounting groove 17. A label 19 for sealing the introduction hole 18 is affixed to the mounting groove 17. After the insulating thermally conductive silicone rubber is filled through the introduction hole 18, the label 19 is used to cover the introduction hole 18, so that the internal structure cannot be seen from the outside, and the introduction hole 18 can be sealed to a certain extent.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0042] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A small mining power supply structure, characterized by: It comprises a base and a shell installed on the base, the shell has a mounting cavity opening downward, a circuit board is installed in the mounting cavity, the circuit board is integrated with connection screws at both ends, and the shell is provided with a groove hole for extending the connection screw; An insulating thermally conductive silicone sheet is provided on the base, the bottom of the shell is pressed tightly against the insulating thermally conductive silicone sheet, and the shell is filled with insulating thermally conductive silicone; A transparent protective cover is installed on the shell.

2. A small-scale mining power supply structure according to claim 1, characterized in that: The inner wall of the shell is provided with symmetrical ribs, and the side surfaces of the circuit board abut against the ribs.

3. A small-scale mining power supply structure according to claim 1, characterized in that: The shell is provided with a plurality of buckle structures located at the opening edge thereof, and the base is provided with buckle grooves for inserting the buckle structures.

4. A small-scale mining power supply structure according to claim 1, characterized in that: The shell is provided with two symmetrically arranged ear seats, and the ear seats are provided with U-shaped openings for inserting fasteners; The base is provided with a fastening hole corresponding to the U-shaped opening, and the fastener passes through the U-shaped opening and is locked on the fastening hole.

5. A small-scale mining power supply structure according to claim 1, characterized in that: The shell is provided with a plurality of symmetrically arranged limiting protrusions, and the transparent shield is provided with limiting holes for snapping into the limiting protrusions.

6. A small-scale mining power supply structure according to claim 5, characterized in that: The transparent protective cover is provided with an opening slot located between two limiting protrusions on the same side, and the opening slot exposes a part of the shell.

7. A small-scale mining power supply structure according to claim 1, characterized in that: The top of the shell is provided with a mounting groove, the mounting groove is provided with an introduction hole for injecting insulating heat-conducting silica gel, and the mounting groove is pasted with a label for sealing the introduction hole.

8. A small-scale mining power supply structure according to any one of claims 1 to 7, characterized in that: The base is provided with a mounting groove, and the opening edge of the shell is inserted into the mounting groove.

9. A small-scale mining power supply structure according to claim 8, characterized in that: The base is made of aluminum, and the shell is made of plastic.

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