A casing mounting hole limiting structure

Abstract

The utility model discloses a casing mounting hole limiting structure, which comprises a casing, the casing cross section is right trapezoid, the left side fixed level of casing is higher than the step surface of casing, and the step surface and the periphery of casing are fixed with a circle of boss, a plurality of limiting blocks are evenly distributed on the boss, each limiting block is composed of two half waist type blocks and a circular block, the two half waist type blocks are symmetrically arranged on the two sides of the circular block, a smooth mounting hole is arranged in the middle of the limiting block, a circle of sealing ring is arranged on the surface of the boss, the sealing ring is matched with the boss contour, a groove matched with the limiting block contour is arranged on the sealing ring, a convex block one is fixed on the step surface, the cross section of the convex block one is hexagon, a threaded hole is arranged in the middle of the convex block one, and the utility model solves the problem that the casing is easily deformed or cracked due to excessive bolt pre-tightening force.

Description

Technical Field

[0001] This utility model belongs to the field of energy storage equipment structural design technology, specifically relating to a shell mounting hole limiting structure. Background Technology

[0002] Energy storage devices, such as battery cabinets and power modules, typically have maintenance panels or housings. These housings need to be well-sealed to protect internal electronic components from environmental factors such as dust and moisture. Currently, the common method for installing housings is to directly bolt them to the equipment frame, with a sealing ring installed between the housing and the frame.

[0003] However, existing installation methods have significant drawbacks: the axial clamping force generated when the bolts are tightened acts directly on the planar area of ​​the housing. When the installation torque is too high or the housing material lacks sufficient toughness (such as when using engineering plastics or thin-walled metals), stress will concentrate around the mounting holes, easily leading to plastic deformation or even circumferential cracks in the housing, severely affecting the product's structural reliability and service life. Therefore, this phenomenon has become a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this utility model is to provide a housing mounting hole limiting structure to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a housing mounting hole limiting structure, including a housing, the housing having a cross-section of a right trapezoid, a stepped surface with a horizontal plane higher than the housing fixed on the left side of the housing, a ring of bosses fixed on the stepped surface and around the housing, a number of limiting blocks evenly distributed on the bosses, each limiting block consisting of two semi-waisted blocks and a circular block, with the two semi-waisted blocks symmetrically arranged on both sides of the circular block, and a smooth mounting hole opened in the middle of the limiting block.

[0006] The present invention further describes that a sealing ring is provided on the surface of the boss, the sealing ring is matched with the shape of the boss, the sealing ring is provided with a groove that matches the shape of the limiting block, a protrusion is fixed on the step surface, the cross-section of the protrusion is hexagonal, a threaded hole is provided in the middle of the protrusion, and through grooves are provided on both sides of the protrusion along the axis, the through grooves penetrate the step surface, the cross-section of the through groove is convex, and small holes are provided on the upper and lower sides of the convex shape of the through groove.

[0007] The present invention further explains that a second protrusion and a fourth protrusion are fixed on one side of the connection between the shell and the stepped surface. The length of the second protrusion is greater than the length of the fourth protrusion. The top of the second protrusion is provided with two sets of positioning holes, and the top of the fourth protrusion is provided with a third positioning hole. The tops of the first and third positioning holes are provided with a ring of anti-loosening teeth along the circumference.

[0008] The present invention further describes that protrusions three, six and seven are fixed on the side of the shell away from the step surface. Positioning holes two, five and six are respectively opened on the top of protrusions three, six and seven. A ring of anti-loosening teeth is opened on the top of positioning holes two, five and six along the circumference.

[0009] The present invention further describes that a groove is provided in the middle of the inside of the shell, and the edges of the groove are rounded. A protrusion five is fixed on the side of the groove near the step surface. A positioning hole four is provided on the top of the protrusion five, and a ring of anti-loosening teeth is provided on the top of the positioning hole four along the circumference.

[0010] This utility model further illustrates that the diameters of positioning holes one, two, three, four, five and six are the same.

[0011] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: By providing the boss 2 and the shape of the boss 2, this utility model can disperse the preload of the bolt and provide limiting support to avoid excessive deformation during installation, which could lead to cracking; by providing a sealing ring, the sealing performance is guaranteed. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an enlarged schematic diagram of the limiting block of this utility model; Figure 3 This is a schematic diagram of the left side of this utility model; Figure 4 This is a schematic diagram of the interior of the casing of this utility model; In the diagram: 1. Housing; 2. Boss; 201. Sealing ring; 3. Limiting block; 301. Mounting hole; 4. Stepped surface; 401. Through groove; 402. Small hole; 5. Boss one; 501. Threaded hole; 6. Protrusion 2; 601. Positioning hole 1; 7. Protrusion 3; 701. Positioning hole 2; 8. Protrusion 4; 801. Positioning hole 3; 9. Protrusion 5; 901. Positioning hole 4; 10. Protrusion 6; 1001. Positioning hole 5; 11. Protrusion 7; 1101. Positioning hole 6; 12. Groove. Detailed Implementation

[0013] The following detailed, non-limiting description of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0014] Please see Figure 1-4 The present invention provides a technical solution: a housing mounting hole limiting structure, including a housing 1, the housing 1 having a cross-section of a right trapezoid, a stepped surface 4 with a horizontal plane higher than the housing 1 fixed on the left side of the housing 1, a ring of bosses 2 fixed around the stepped surface 4 and the housing 1, a number of limiting blocks 3 evenly distributed on the bosses 2, each limiting block 3 consisting of two semi-waist-shaped blocks and a circular block, with the two semi-waist-shaped blocks symmetrically arranged on both sides of the circular block, and a smooth mounting hole 301 opened in the middle of the limiting block 3; A sealing ring 201 is provided on the surface of the boss 2. The sealing ring 201 matches the shape of the boss 2. The sealing ring 201 has a groove that matches the shape of the limiting block 3. A protrusion 5 is fixed on the stepped surface 4. The cross-section of the protrusion 5 is hexagonal. A threaded hole 501 is opened in the middle of the protrusion 5. Through grooves 401 are opened on both sides of the protrusion 5 along the axis. The through grooves 401 penetrate the stepped surface 4. The cross-section of the through grooves 401 is convex. Small holes 402 are opened on the upper and lower sides of the convex shape of the through grooves 401. A second protrusion 6 and a fourth protrusion 8 are fixed on one side of the connection between the shell 1 and the stepped surface 4. The length of the second protrusion 6 is greater than the length of the fourth protrusion 8. The top of the second protrusion 6 has two sets of positioning holes 601, and the top of the fourth protrusion 8 has a positioning hole 801. The top of the positioning holes 601 and 801 has a ring of anti-loosening teeth along the circumference. Inside the housing 1, on the side away from the step surface 4, there are protrusions 3 7, 6 10 and 7 11. The tops of protrusions 3 7, 6 10 and 7 11 are respectively provided with positioning holes 2 701, 5 1001 and 6 1101. The tops of positioning holes 2 701, 5 1001 and 6 1101 are provided with a ring of anti-loosening teeth along the circumference. The inside of the housing 1 has a groove 12 in the middle, and the edges of the groove 12 are rounded. A protrusion 5 9 is fixed on the side of the groove 12 near the step surface 4. A positioning hole 4 901 is opened on the top of the protrusion 5 9, and a ring of anti-loosening teeth is provided on the top of the positioning hole 4 901 along the circumference. The diameters of positioning holes 1 (601), 2 (701), 3 (801), 4 (901), 5 (1001), and 6 (1101) are the same.

[0015] Working principle: During assembly, the bolts pass through the mounting holes 301 and are tightened. The height of the boss 2 is designed so that its upper surface can contact the mounting frame of the equipment (not shown in the figure) before the thin-walled area of ​​the housing 1, forming a mechanical limiting point, i.e., a hard stop. As the bolt torque continues to increase, most of the preload is directly transmitted to the mounting frame through the more rigid boss 2, rather than being borne by the easily deformable housing 1 body.

[0016] In this way, the force transmission path is reconstructed by the boss 2, and the concentrated stress is distributed to the entire support surface of the boss 2, thereby physically limiting the maximum deformation of the shell 1 body and effectively preventing overload cracking.

[0017] During assembly, the bolts are screwed into the mounting holes 301. The boss 2 can distribute the preload of the bolts and provide limiting support to prevent excessive deformation during installation, which could lead to cracking. A sealing ring 201 is provided between the boss 2 and the mounting frame to ensure sealing.

[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A housing mounting hole limiting structure, comprising a housing (1), characterized in that: The shell (1) has a right trapezoidal cross section. A step surface (4) with a horizontal plane higher than the shell (1) is fixed on the left side of the shell (1). A ring of bosses (2) is fixed around the step surface (4) and the shell (1). Several limiting blocks (3) are evenly distributed on the bosses (2). Each limiting block (3) consists of two half-waisted blocks and a circular block. The two half-waisted blocks are symmetrically arranged on both sides of the circular block. A smooth mounting hole (301) is opened in the middle of the limiting block (3).

2. The housing mounting hole limiting structure according to claim 1, characterized in that: A sealing ring (201) is provided on the surface of the boss (2). The sealing ring (201) matches the shape of the boss (2). The sealing ring (201) has a groove that matches the shape of the limiting block (3). A protrusion (5) is fixed on the step surface (4). The cross-section of the protrusion (5) is hexagonal. A threaded hole (501) is opened in the middle of the protrusion (5). Through grooves (401) are opened on both sides of the protrusion (5) along the axis. The through grooves (401) penetrate the step surface (4). The cross-section of the through grooves (401) is convex. Small holes (402) are opened on the upper and lower sides of the convex shape of the through grooves (401).

3. The housing mounting hole limiting structure according to claim 2, characterized in that: The shell (1) is fixed with a second protrusion (6) and a fourth protrusion (8) on one side of the connection between the shell (1) and the step surface (4). The length of the second protrusion (6) is greater than the length of the fourth protrusion (8). The top of the second protrusion (6) is provided with two sets of positioning holes (601), and the top of the fourth protrusion (8) is provided with a third positioning hole (801). The top of the first positioning hole (601) and the third positioning hole (801) is provided with a ring of anti-loosening teeth along the circumference.

4. The housing mounting hole limiting structure according to claim 3, characterized in that: Inside the housing (1), on the side away from the step surface (4), there are three protrusions (7), six protrusions (10) and seven protrusions (11). The tops of the three protrusions (7), six protrusions (10) and seven protrusions (11) are respectively provided with positioning holes two (701), five (1001) and six (1101). The tops of the positioning holes two (701), five (1001) and six (1101) are provided with a ring of anti-loosening teeth along the circumference.

5. The housing mounting hole limiting structure according to claim 4, characterized in that: The housing (1) has a groove (12) in the middle. The edges of the groove (12) are rounded. A protrusion five (9) is fixed on the side of the groove (12) near the step surface (4). A positioning hole four (901) is provided on the top of the protrusion five (9). A ring of anti-loosening teeth is provided on the top of the positioning hole four (901) along the circumference.

6. The housing mounting hole limiting structure according to claim 5, characterized in that: The diameters of positioning holes one (601), two (701), three (801), four (901), five (1001), and six (1101) are the same.

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