Waterproof fastener for high-voltage cabinet

Abstract

The utility model discloses a waterproof fastener for a high-voltage cabinet. The waterproof fastener comprises a connecting rod and a sealing fastener sleeved on the connecting rod, the sealing fastener comprises a base, a clamp spring and an oil seal, the base is provided with a first connecting hole, the first connecting hole penetrates through the whole base, one end face of the base extends outwards to form a connecting column, the connecting column is provided with a second connecting hole, the second connecting hole penetrates through the whole connecting column, and the first connecting hole is communicated with the second connecting hole; a fixing groove is formed in the inner wall of the base, the clamping spring is fixed in the fixing groove, the oil seal is installed in the first connecting hole, and the oil seal is located between the clamping spring and the connecting column. According to the waterproof fastener, the corresponding installation groove is formed in the base, the clamping spring is installed in the installation groove, the clamping spring limits the position of the oil seal, the oil seal is prevented from falling off, it is guaranteed that the oil seal is fixed in the first connecting hole, and the sealing performance of the waterproof fastener is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to high pressure cabinet technical field especially relates to a waterproof fastener for high pressure cabinet. BACKGROUND

[0002] Fasteners are used to fix objects, such as screws or bolts, and sealing fasteners usually play a connecting or sealing fastening role in industry. With the development of science and technology, some equipment or devices used in water-free environments on the ground sometimes also need to be used underwater, which requires sealing fasteners to have reliable waterproof performance.

[0003] The waterproof fastener installed on the high pressure cabinet on the market currently has the risk of oil seal falling, resulting in the loss of waterproof performance of the entire waterproof fastener. INVENTION CONTENTS

[0004] The utility model discloses a waterproof fastener for high pressure cabinet, corresponding installation groove is arranged in the base, snap spring is installed in the installation groove, the position of oil seal is limited by the snap spring, oil seal falling is avoided, it is favorable for guaranteeing that oil seal is fixed in the first connecting hole, and the sealing performance of waterproof fastener is guaranteed.

[0005] Correspondingly, the utility model provides a waterproof fastener for high pressure cabinet, the waterproof fastener includes: connecting rod and sealing fastener of sleeve set on the connecting rod;

[0006] The sealing fastener includes: base, snap spring and oil seal, the base has first connecting hole, one end face of the base extends outward and forms connecting column,

[0007] The connecting column has second connecting hole, and the first connecting hole and the second connecting hole are communicated.

[0008] The inner wall of the base is provided with a fixed groove, the snap spring is fixed in the fixed groove, the oil seal is installed in the first connecting hole, and the oil seal is located between the snap spring and the connecting column.

[0009] Preferably, both ends of the snap spring extend towards the center of the snap spring to form a limiting part, and the limiting part has a through hole.

[0010] Preferably, the end face of the base connected with the connecting column extends outward to form a mounting table, the mounting table has an installation groove, and the installation groove surrounds the surface of the connecting column.

[0011] The installation groove is provided with a sealing ring.

[0012] Preferably, the connecting column is sleeved with a nut, and the nut is threadedly connected with the connecting column.

[0013] And the nut is located at the root of the connecting column, and the nut is in abutment with the sealing ring.

[0014] Preferably, the center of the first connecting hole and the center of the second connecting hole are located on the same axis.

[0015] Preferably, the first connecting hole has a hole diameter R1, and the second connecting hole has a hole diameter R2, and the relationship R1>R2 is satisfied.

[0016] Preferably, the connecting rod comprises a first circular rod, a second circular rod and a first rectangular rod, the first circular rod is fixedly connected with the second circular rod, the first rectangular rod is fixedly connected with the second circular rod, and the second circular rod is located between the first circular rod and the first rectangular rod.

[0017] The first circular rod, the second circular rod and the first rectangular rod are integrally formed.

[0018] Preferably, a spring is arranged on the connecting rod, the spring is sleeved on the first rectangular rod, and one end of the spring is in abutment with the second circular rod.

[0019] Preferably, two symmetrical clamping circular tables are arranged on the first circular rod, and a preset gap for clamping the shell is left between the two clamping circular tables.

[0020] Preferably, a plurality of fourth connecting holes are arranged on the first rectangular rod.

[0021] The beneficial effects of the utility model are as follows:

[0022] The utility model discloses a fixing groove is set up, and the clamping spring is installed in the fixing groove, so that the clamping spring is fixed in the fixed position in the base, guarantees that the clamping spring can abut against the bottom of the oil seal, makes the oil seal can stably be fixed between the clamping spring and the connecting column, and then restricts the moving direction of the oil seal, and the clamping spring has a supporting force to the oil seal, avoids the oil seal from falling off from the first connecting hole, is favorable to guaranteeing that the oil seal is fixed in the first connecting hole, and guarantees the sealing performance of the waterproof fastener. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating creative labor.

[0024] Figure 1 It is the structure diagram of waterproof fastener in the utility model;

[0025] Figure 2 is the structure diagram of the sealing fastener in the utility model,

[0026] Figure 3 is the explosion view of the sealing fastener in the utility model,

[0027] Figure 4 is the first structure diagram of the base in the utility model,

[0028] Figure 5 is the second structure diagram of the base in the utility model,

[0029] Figure 6 is the structure diagram of the clamping spring in the utility model,

[0030] Figure 7 is the sectional view of the sealing fastener in the utility model

[0031] Figure 8 is the structure diagram of the connecting rod in the utility model.

[0032] In the drawings, 1, connecting rod; 11, first round rod; 111, clamping round table; 12, second round rod; 13, first rectangular rod; 131, fourth connecting hole; 14, spring; 2, sealing fastener; 21, base; 211, first connecting hole; 2111, fixed groove; 212, mounting table; 213, mounting groove; 2131, sealing ring; 22, clamping spring; 221, limiting part; 2211, through hole; 23, oil seal; 24, connecting column; 241, second connecting hole; 25, nut. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0034] Figure 1 is the structure diagram of the waterproof fastener in the utility model, Figure 2 is the structure diagram of the sealing fastener in the utility model, Figure 3 is the explosion view of the sealing fastener in the utility model, Figure 4 is the first structure diagram of the base in the utility model, Figure 5 is the second structure diagram of the base in the utility model, Figure 6 is the structure diagram of the clamping spring in the utility model,Figure 7 A sectional view of the sealing fastener is shown in the utility model, Figure 8 A structure schematic view of the connecting rod is shown, the waterproof fastener comprises a connecting rod 1 and a sealing fastener 2 sleeved on the connecting rod 1, the sealing fastener 2 comprises a base 21, a clamping spring 22 and an oil seal 23, the base 21 is a hexagonal prism, the base 21 is provided with a first connecting hole 211, the first connecting hole 211 penetrates through the whole base 21, one end face of the base 21 extends outward to form a connecting column 24, the connecting column 24 is provided with a second connecting hole 241, the second connecting hole 241 penetrates through the whole connecting column 24, the first connecting hole 211 is communicated with the second connecting hole 241, a fixing groove 2111 is formed in the inner wall of the base 21, the clamping spring 22 is fixed in the fixing groove 2111, the oil seal 23 is installed in the first connecting hole 211, and the oil seal 23 is located between the clamping spring 22 and the connecting column 24. In the embodiment, the base 21 is a hollow hexagonal prism, that is, the base 21 forms the first connecting hole 211 based on the hollow hexagonal prism, and the clamping spring 22 and the oil seal 23 can be arranged in the first connecting hole 211. Similarly, the connecting column 24 is also a hollow column, and the connecting column 24 is provided with threads on the outer surface, the connecting column 24 forms the second connecting hole 241 based on the hollow column, and the connecting rod 1 can pass through the first connecting hole 211 and the second connecting hole 241, so that the sealing fastener 2 is sleeved on the connecting rod 1. The fixing groove 2111 is used for arranging the clamping spring 22 in the first connecting hole 211, so that the clamping spring 22 can be fixed at a specified position; the clamping spring 22 is used for limiting the position of the oil seal 23, so that the oil seal 23 is fixed in the first connecting hole 211; and the oil seal 23 is used for being closely attached in the first connecting hole 211, effectively preventing external dust or moisture from entering.

[0035] It should be noted that the waterproof fastener can play the role of a waterproof fastener and also play the role of a grounding interlock in the high-voltage cabinet, that is, the waterproof fastener can not only reduce the entry of moisture into the high-voltage cabinet body, but also can guarantee the safety of equipment, prevent misoperation, improve system stability and adapt to unattended environment, thereby providing a strong guarantee for the safe and reliable operation of the power system.

[0036] Further, the two ends of the clamp spring 22 respectively extend towards the center of the clamp spring 22 to form a limiting portion 221, and the limiting portion 221 has a through hole 2211. In this embodiment, the clamp spring 22 has two limiting portions 221, which abut against the bottom of the oil seal 23, so that the oil seal 23 can be stably fixed between the clamp spring 22 and the connecting column 24, and further limit the moving direction of the oil seal 23. The two limiting portions 221 provide a supporting force to the oil seal 23 from two symmetrical positions, which avoids the oil seal 23 from falling out of the first connecting hole 211, and is beneficial to ensure that the oil seal 23 is fixed in the first connecting hole 211, and ensure the sealing performance of the waterproof fastener.

[0037] It should be noted that the limiting portion 221 is provided with a through hole 2211, which is used to adjust the curvature of the clamp spring 22, and is beneficial to the maintenance personnel to disassemble or install the clamp spring 22 in the fixed groove 2111. When it is necessary to disassemble or install the clamp spring 22 in the fixed groove 2111, a wire is passed through the through hole 2211, and the clamp spring 22 is deformed by pulling it hard, that is, the clamp spring 22 is changed from a circular force to an oval shape, and then is taken out of or aligned and installed in the fixed groove 2111.

[0038] Further, the end face of the base 21 connected with the connecting column 24 extends outward to form a mounting table 212, and the mounting table 212 has a mounting groove 213 surrounding the surface of the connecting column 24, and the mounting groove 213 is provided with a sealing ring 2131. The mounting table 212 not only increases the connecting area, but also provides an additional structure for installing a sealing element, thereby enhancing the sealing performance of the sealing fastener 2. The mounting groove 213 surrounds the surface of the connecting column 24 to form an annular structure, so as to ensure that the sealing ring 2131 can be stably placed therein, while maintaining good compression deformation capability, thereby achieving ideal sealing effect.

[0039] Further, the connecting column 24 is sleeved with a nut 25, the nut 25 is in threaded connection with the connecting column 24; and the nut 25 is located at the root of the connecting column 24, and the nut 25 abuts against the sealing ring 2131. The threaded connection of the nut 25 and the connecting column 24 can provide reliable connection strength, ensure the stability and safety of the connection, and ensure that the nut 25 can be stably fixed at the root of the connecting column 24, and the sealing ring 2131 in the mounting groove 213 is pressed, so that the sealing ring 2131 is deformed under the pressure of the nut 25. The sealing ring 2131 is in close contact with the mounting groove 213 and the nut 25, so that the contact stress between the sealing ring 2131 and the sealing surface is increased, and when the fluid pressure is lower than the contact stress, the sealing member can effectively reduce the risk of fluid penetration, thereby improving the sealing performance of the waterproof fastener.

[0040] Further, the center of the first connecting hole 211 and the center of the second connecting hole 241 are located on the same axis, and the first connecting hole 211 and the second connecting hole 241 can be perfectly aligned, which not only improves the stability of the connection and reduces the stress concentration caused by misalignment, but also helps to ensure uniform stress of the connecting components when bearing load, thereby prolonging the service life of the connecting structure.

[0041] Further, the first connecting hole 211 has a hole diameter R1, and the second connecting hole 241 has a hole diameter R2, and the relationship R1>R2 is satisfied. The first connecting hole 211 further has an oil seal 23, the oil seal 23 has a third connecting hole, the hole diameter of the third connecting hole is the same as that of the second connecting hole 241, when the connecting rod 1 passes through the sealing fastener 2, the connecting rod 1 abuts against the second connecting hole 241, the oil seal 23 abuts against the connecting rod 1, and at the same time, the connecting rod 1 and the first connecting hole 211 sandwich the oil seal 23, so that the oil seal 23 is attached to the connecting rod 1, effectively reducing the risk of fluid penetration, thereby improving the sealing performance of the sealing fastener 2.

[0042] Further, the connecting rod 1 comprises a first circular rod 11, a second circular rod 12 and a first rectangular rod 13, the first circular rod 11 is fixedly connected with the second circular rod 12, the first rectangular rod 13 is fixedly connected with the second circular rod 12, and the second circular rod 12 is located between the first circular rod 11 and the first rectangular rod 13; the first circular rod 11, the second circular rod 12 and the first rectangular rod 13 are integrally formed. The connecting rod 1 is a grounding interlocking rod for ensuring the interlocking control between the disconnecting switch and the grounding switch to prevent safety accidents caused by misoperation. The first circular rod 11 is inserted into one of the chambers in the high-voltage cabinet, the first rectangular rod 13 is also inserted into another chamber in the high-voltage cabinet, and the second circular rod 12 is located between the two chambers. The cross-sectional area of the first circular rod 11 and the first rectangular rod 13 is smaller than that of the second circular rod 12, and the smaller the radius, the smaller the contact area of the high-voltage cabinet with the outside world, which can effectively reduce the contact area of the high-voltage cabinet with the outside world, so that the opportunity of water vapor entering the cabinet is less, the risk of water vapor invasion is reduced, and the safety of the electronic components in the high-voltage cabinet is protected. Similarly, the sealing fastener 2 is located on the second circular rod 12, the second circular rod 12 needs to bear the high-frequency impact and pressure caused by the up-down movement of the sealing fastener 2, and the second circular rod 12 can provide a larger contact area to enhance the connection strength and stability.

[0043] It should be noted that the first circular rod 11, the second circular rod 12 and the first rectangular rod 13 are integrally formed, reducing the joints or connection points between the three, avoiding stress concentration of the connecting rod 1 under stress, causing strength to decrease, which is beneficial to the whole structure to be more uniform and continuous, thereby improving the overall strength.

[0044] Further, the connecting rod 1 is provided with a spring 14, the spring 14 is sleeved on the first rectangular rod 13, and one end of the spring 14 abuts against the second circular rod 12. The spring 14 is used to control the position of the connecting rod 1, when the disconnecting switch in the high-voltage cabinet is in the closed state, that is, the first rectangular rod 13 is forced to move, the spring 14 is compressed, the grounding interlocking rod is locked with the grounding switch, causing the door of the chamber where the first circular rod 11 is located to be locked; on the contrary, when the disconnecting switch in the high-voltage cabinet is in the open state, the spring 14 is in a natural state, the grounding interlocking rod is normally connected with the grounding switch, causing the door of the chamber where the first circular rod 11 is located to be normally opened, which is beneficial to reducing safety accidents caused by human misoperation and improving the safety and reliability of the power equipment.

[0045] Further, the first circular rod 11 has a radius R3, and the second circular rod 12 has a radius R4, and the relationship R3 < R4 is satisfied. The first circular rod 11 needs to be inserted into the corresponding high-voltage cabinet, and the smaller the radius of the first circular rod 11, the smaller the area of the high-voltage cabinet in contact with the outside world, which can effectively reduce the contact area between the high-voltage cabinet and the outside world, so that the opportunity for water vapor to enter the cabinet is less, reducing the risk of water vapor intrusion, and protecting the safety of the electronic components inside the high-voltage cabinet. The radius of the second circular rod 12 is greater than the radius of the first circular rod 11, and since the first circular rod 11 is inserted into the hole of the high-voltage cabinet and the radius of the first circular rod 11 is adapted, that is, the radius of the second circular rod 12 is greater than the hole inserted into the high-voltage cabinet, which avoids the risk of the second circular rod 12 also being inserted into the corresponding high-voltage cabinet when the entire first circular rod 11 is inserted into the corresponding high-voltage cabinet. Secondly, the sealing fastener 2 is located on the second circular rod 12, and the second circular rod 12 needs to withstand the high-frequency impact and pressure caused by the up-down movement of the sealing fastener 2, and the second circular rod 12 can provide a larger contact area, enhancing the connection strength and stability.

[0046] Further, the first circular rod 11 is provided with two symmetrically distributed clamping circular tables 111, and a preset gap for clamping the shell is left between the two clamping circular tables 111. When the connecting rod 1 is inserted into the high-voltage cabinet, one clamping circular table 111 is located inside the high-voltage cabinet, and the other clamping circular table 111 is located outside the high-voltage cabinet, and the two clamping circular tables clamp the shell of the high-voltage cabinet, reducing the contact area between the inside of the high-voltage cabinet and the outside environment, reducing the air circulation between the high-voltage cabinet and the outside environment, and thereby improving the sealing performance of the high-voltage cabinet. Secondly, the preset gap has the same thickness as the cabinet body of the high-voltage cabinet, and when the two clamping circular tables 111 clamp the cabinet body of the high-voltage cabinet, the connecting rod 1 is prevented from moving during use, ensuring that the entire connecting rod 1 stably connects the two cabinet bodies, so that the two clamping circular tables clamp the shell of the high-voltage cabinet, thereby improving the sealing performance of the high-voltage cabinet.

[0047] Further, the first rectangular rod 13 is provided with a plurality of fourth connecting holes 131. In this embodiment, the first rectangular rod 13 is provided with two fourth connecting holes 131, and screws or studs can be inserted into the two fourth connecting holes 131, and the upper half of the sealing fastener 2 is fixed at the corresponding position of the high-voltage cabinet through the screws or studs, thereby preventing the connecting rod 1 from rotating during use, and facilitating the stable fixation of the waterproof fastener at the corresponding position after installation.

[0048] In summary, the utility model discloses a fixed groove is set up, and the snap spring is installed in the fixed groove, makes the snap spring fixed in the fixed position in the base, guarantees that the snap spring can be to the bottom of oil seal and butt, makes the oil seal can stably be fixed between the snap spring and the connecting column, and then restricts the moving direction of oil seal, and the snap spring has a supporting force to oil seal, avoids oil seal from falling in the first connecting hole, is favorable to guarantee that oil seal is fixed in the first connecting hole, guarantees the sealing performance of waterproof fastener.

[0049] In addition, the waterproof fastener for the high-voltage cabinet provided by the embodiment of the utility model is described in detail, the principle and implementation mode of the utility model are described by using specific examples in this paper, and the above embodiment is only used for helping to understand the method and core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the utility model, the specific implementation mode and application range will have changes, and the above is summarized, and the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A waterproof fastener for a high voltage cabinet, characterized by, The waterproof fastener comprises a connecting rod and a sealing fastener sleeved on the connecting rod; The sealing fastener comprises a base, a clamping spring and an oil seal, the base has a first connecting hole, one end face of the base extends outward to form a connecting column, The connecting column has a second connecting hole, the first connecting hole and the second connecting hole are in communication; The inner wall of the base is provided with a fixing groove, the clamping spring is fixed in the fixing groove, the oil seal is installed in the first connecting hole, and the oil seal is located between the clamping spring and the connecting column.

2. The waterproof fastener for a high-voltage cabinet according to claim 1, characterized by, Both ends of the clamping spring extend towards the center of the clamping spring to form a limiting part, and the limiting part has a through hole.

3. The waterproof fastener for a high-voltage cabinet according to claim 1, characterized by, The end face of the base connected with the connecting column extends outward to form a mounting table, the mounting table has a mounting groove, and the mounting groove surrounds the surface of the connecting column; The mounting groove is provided with a sealing ring.

4. The waterproof fastener for a high-voltage cabinet according to claim 3, characterized by The connecting column is sleeved with a nut, the nut is in threaded connection with the connecting column; The nut is located at the root of the connecting column, and the nut abuts against the sealing ring.

5. The waterproof fastener for a high-voltage cabinet according to claim 1, wherein The center of the first connecting hole and the center of the second connecting hole are located on the same axis.

6. The waterproof fastener for a high-voltage cabinet according to claim 1, wherein The aperture size of the first connecting hole is R1, and the aperture size of the second connecting hole is R2, and the relationship R1>R2 is satisfied.

7. The waterproof fastener for a high-voltage cabinet according to claim 1, wherein The connecting rod comprises a first circular rod, a second circular rod and a first rectangular rod, the first circular rod is fixedly connected with the second circular rod, the first rectangular rod is fixedly connected with the second circular rod, and the second circular rod is located between the first circular rod and the first rectangular rod. The first circular rod, the second circular rod and the first rectangular rod are integrally formed.

8. The waterproof fastener for a high-voltage cabinet according to claim 7, characterized by The connecting rod is provided with a spring, the spring is sleeved on the first rectangular rod, and one end of the spring abuts against the second circular rod.

9. The waterproof fastener for a high-voltage cabinet according to claim 7, wherein The first circular rod is provided with two symmetrically distributed clamping circular tables, and a preset gap for clamping the shell is defined between the two clamping circular tables.

10. The waterproof fastener for a high-voltage cabinet according to claim 7, wherein The first rectangular rod is provided with a plurality of fourth connecting holes.

Images