Incoming wire sealing device of highly accelerated life test box
The combined structure of the sealing sleeve, sealing plug tube and locking sleeve solves the problem of insufficient sealing at the wire threading point of the highly accelerated life test chamber, achieves long-term sealing and stability of the test environment, avoids failure of the sealing material, and protects external electrical equipment.
Patent Information
- Application Number
- CN202423114067.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-12-17
AI Technical Summary
The existing highly accelerated life test chambers have insufficient sealing at the threading points, which leads to leakage of the test environment, affecting the accuracy and stability of the test. At the same time, the sealing materials are prone to aging and failure, and the sealing cannot be guaranteed for a long time.
A combined structure of a sealing sleeve, a sealing plug tube and a locking sleeve is adopted to achieve sealing of the wiring harness through threaded connection and extrusion, ensuring close contact between the sealing sleeve and the sealing plug tube to form a fully enclosed structure.
It achieves long-term sealing of the highly accelerated life test chamber, prevents leakage of the test environment, protects external electrical equipment, avoids the problem of aging and failure of sealing materials, and ensures the stability and accuracy of the test environment.
Smart Images
Figure CN223447865U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of high acceleration life test box wire entry sealing devices, applicable to life test technical field. BACKGROUND
[0002] High acceleration life test box is also called Hast test box, it is a kind of equipment for simulating various environmental conditions and stress that product is subjected to in long time use process, to test its reliability and durability, it is mainly applicable to electronic, automobile, aerospace, communication and other industries. The test principle of high acceleration life test box is to create extreme temperature, high-low pressure, voltage and other environmental conditions in the box, so as to find out potential defects and weak links of product in short time, so as to optimize and improve product before production. In order to ensure that the test environment inside the test box can be stable and up to standard, the test box needs to have enough sealing property, but the product has power supply and communication requirements inside the test box, needs to introduce corresponding cable from outside the box, so that the part of the box wall is left with a gap, so that the environment inside the box leaks, not only will affect the simulation and stability of the environment inside the box, but also the high temperature or low temperature inside the box will be transmitted outward along the gap, causing damage to external electrical equipment. In order to avoid the above problems, the existing technology will use structural glue and other materials to block the gap of the threading part, however, due to the extreme test environment inside the test box, the blocking material is prone to aging and hardening during use, resulting in blocking failure, losing sealing effect, and unable to ensure the sealing property of the test box during long-term use. SUMMARY
[0003] In order to solve the defects existing in the prior art, the utility model provides a kind of high acceleration life test box wire entry sealing device.
[0004] The technical scheme adopted by the utility model is a kind of high acceleration life test box wire entry sealing device, including the line concentrator threaded on the box wall of test box, a plurality of threading holes opened in line concentrator and through inside and outside test box, sealing device further includes the sealing assembly that is set in threading hole one by one, each sealing assembly includes:
[0005] Sealing sleeve, embedded in threading hole, the lumen inside sealing sleeve has first threaded part, connecting part, first sealing part in turn from one end to the other end, the inner diameter of first sealing part gradually decreases from the end connected with connecting part to the other end.
[0006] Sealing plug pipe, set in sealing sleeve, part of sealing plug pipe is located in connecting part, another part is located in first sealing part and the outer wall of the part abuts with the inner wall of first sealing part, the maximum of sealing plug pipe outer diameter is less than the diameter of one end of first sealing part, and the minimum of sealing plug pipe outer diameter is greater than the diameter of the other end of first sealing part, sealing plug pipe is rubber material.
[0007] The locking sleeve is inserted into the sealing sleeve from one end of the self-sealing sleeve and is screwed with the first threaded part. One end of the locking sleeve abuts against the sealing plug and exerts a force on it towards the other end of the sealing sleeve. When threading, the wire harness is threaded through the locking sleeve, the sealing plug and the sealing sleeve in turn, and then is threaded into the test chamber through the threading hole. Subsequently, the locking sleeve is screwed into the sealing sleeve, and a force is exerted on the sealing plug during the screwing process, so that the end of the sealing plug enters the first sealing part. Due to the gradually decreasing inner diameter of the first sealing part, the end of the sealing plug is increasingly pressed by the inner wall of the first sealing part while advancing, which forms a seal between the sealing plug and the first sealing part on the one hand, and presses the central hole of the sealing plug to close the central hole and squeeze the wire harness on the other hand, so that a seal is formed between the sealing plug and the wire harness, and finally the threading hole is completely sealed. This not only ensures the sealing of the test chamber and prevents leakage from affecting the accuracy and stability of the test environment in the test chamber, but also avoids damage to electrical equipment outside the test chamber caused by the leakage of the test environment. At the same time, it also avoids the problem of low sealing life and easy failure caused by using structural glue and other materials to block the threading gap.
[0008] Further, the outer diameter of the part of the sealing plug located in the first sealing part gradually decreases from one end of the self-sealing sleeve abutting against the locking sleeve to the other end. By setting the end of the sealing plug as a tapered mouth, the end is more easily squeezed into the first sealing part, and the contact area between the sealing plug and the inner wall of the first sealing part is also increased, ensuring the sealing between the sealing plug and the first sealing part.
[0009] Further, the lumen in the sealing sleeve also has a second sealing part connected with the first sealing part, and the diameter of the second sealing part is the same as the diameter of the other end of the first sealing part. When the force exerted on the sealing plug is large enough to squeeze it into the second sealing part, the cylindrical second sealing part can further increase the contact surface between the inner wall of the sealing sleeve and the sealing plug, and further ensure the sealing performance through the large enough sealing surface.
[0010] Still further, the lumen in the sealing sleeve also has a threading part connected with the second sealing part, and the diameter of the threading part is smaller than the diameter of the second sealing part. Through the diameter difference between the threading part and the second sealing part, when the sealing plug is squeezed to the connection between the second sealing part and the threading part, the end surface of the sealing plug can abut against the end surface of the connection between the threading part and the second sealing part, further improving the sealing performance.
[0011] Still further, the inner diameter of the sealing plug is less than or equal to the diameter of the threading part.
[0012] Furthermore, the locking sleeve has, from one end to the other, an abutment portion, a second threaded portion for threaded connection with the first threaded portion, and a mounting portion. The abutment portion extends into the connecting portion, and one end of the sealing plug tube abuts against the end of the abutment portion. The threaded connection between the first and second threaded portions provides a driving force that drives the abutment portion to squeeze the sealing plug tube, thereby achieving a seal.
[0013] Furthermore, the mounting portion is configured as a prism, specifically, the mounting portion is configured as a cuboid, which facilitates installation of the locking sleeve using tools such as a wrench, thereby improving installation convenience.
[0014] Due to the application of the above technical solution, the present invention has the following advantages over the prior art:
[0015] The high-accelerated life test box inlet sealing device of the present invention has a simple structure and is easy to install. The wire harness is concentrated by a hub, and then the threading point of each wire harness is sealed by a sealing component. In the sealing component, the wire harness is passed through a locking sleeve, a sealing plug tube and a sealing sleeve in sequence, and then the locking sleeve is screwed into the sealing sleeve, and the inner walls of the locking sleeve and the sealing sleeve are matched to apply pressure to the sealing plug tube to squeeze and deform the sealing plug tube. At the same time, all gaps between the sealing plug tube and the inner wall of the sealing sleeve, and between the inner wall of the sealing plug tube and the wire harness are sealed, thereby achieving sealing at the line inlet of the test box. This not only ensures the sealing of the test box and prevents leakage that affects the accuracy and stability of the test environment in the test box, but also avoids the leaked test environment from damaging the electrical equipment outside the test box; it also avoids the problems of low sealing life and easy failure caused by using materials such as structural adhesives to seal the threading gaps. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar structures or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:
[0017] Figure 1 It is a structural diagram of an embodiment of the present utility model;
[0018] Figure 2 yes Figure 1 A schematic diagram of the structure of the back side of the hub in the embodiment shown;
[0019] Figure 3 yes Figure 1 A schematic structural diagram of the sealing assembly in the illustrated embodiment;
[0020] Figure 4 yes Figure 3 A schematic structural diagram of the sealing sleeve in the illustrated embodiment;
[0021] Figure 5 is Figure 3 a structure diagram of the sealing plug tube in the embodiment shown in the figure;
[0022] Figure 6 is Figure 3 a structure diagram of the locking sleeve in the embodiment shown in the figure;
[0023] The reference signs are explained as follows:
[0024] 1, hub; 11, threading hole; 2, sealing assembly; 3, sealing sleeve; 31, first threaded part; 32, connecting part; 33, first sealing part; 34, second sealing part; 35, threading part; 4, sealing plug tube; 5, locking sleeve; 51, abutting part; 52, second threaded part; 53, mounting part. DETAILED DESCRIPTION
[0025] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0026] In the description of the present application, it should be noted that the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.
[0027] Reference is made to the drawings Figures 1-6 The wire inlet sealing device of the high-acceleration life test box in the embodiment includes a hub 1 arranged on the wall of the test box, a plurality of threading holes 11 arranged in the hub 1 and penetrating the test box, and a sealing assembly 2 arranged in each threading hole 11.
[0028] The sealing sleeve 3 is embedded in the threading hole 11, and the lumen inside the sealing sleeve 3 has a first threaded part 31, a connecting part 32 and a first sealing part 33 from one end to the other end in sequence, and the inner diameter of the first sealing part 33 gradually decreases from one end connected with the connecting part 32 to the other end.
[0029] The sealing plug tube 4 is arranged in the sealing sleeve 3, a part of the sealing plug tube 4 is located in the connecting part 32, another part is located in the first sealing part 33 and the outer wall of the part abuts against the inner wall of the first sealing part 33, the maximum outer diameter of the sealing plug tube 4 is smaller than the diameter of one end of the first sealing part 33, and the minimum outer diameter of the sealing plug tube 4 is larger than the diameter of the other end of the first sealing part 33, and the sealing plug tube 4 is made of rubber.
[0030] The locking sleeve 5 is inserted into the sealing sleeve 3 from one end of the sealing sleeve 3 and is threadedly connected with the first threaded part 31, one end of the locking sleeve 5 abuts against the sealing plug tube 4 and applies a force to the sealing plug tube 4 towards the other end of the sealing sleeve 3.
[0031] When threading, the wiring harness is sequentially threaded through the locking sleeve 5, the sealing plug tube 4 and the sealing sleeve 3, and then is threaded into the test box through the threading hole, and then the locking sleeve 5 is screwed into the sealing sleeve 3, and a force is applied to the sealing plug tube 4 during the screwing process, so that the end of the sealing plug tube 4 enters the first sealing part 33, and because the inner diameter of the first sealing part 33 gradually decreases, the end of the sealing plug tube 4 is increasingly pressed by the inner wall of the first sealing part 33 while advancing, which forms a seal between the sealing plug tube 4 and the first sealing part 33 on one hand, and on the other hand, the pressure applied by the first sealing part 33 extrudes the central hole of the sealing plug tube 4, so that the central hole is closed and the wiring harness is extruded, thereby forming a seal between the sealing plug tube 4 and the wiring harness, and finally achieving complete sealing at the threading hole, which not only ensures the sealing of the test box and prevents leakage from affecting the accuracy and stability of the test environment in the test box, but also avoids damage to electrical equipment outside the test box caused by the leakage of the test environment; at the same time, the problem of low sealing life and easy failure caused by using structural glue and the like to block the threading gap is also avoided.
[0032] In a more preferred embodiment, the outer diameter of the part of the sealing plug tube 4 located in the first sealing part 33 gradually decreases in the direction from the end of the sealing plug tube 4 abutting against the locking sleeve 5 to the other end. By setting the end of the sealing plug tube 4 as a tapered opening, the end is more easily extruded into the first sealing part 33, and the contact area between the sealing plug tube 4 and the inner wall of the first sealing part 33 is also increased, thereby ensuring the sealing between the sealing plug tube 4 and the first sealing part 33.
[0033] In a more preferred embodiment, the lumen in the sealing sleeve 3 further has a second sealing part 34 connected with the first sealing part 33, and the diameter of the second sealing part 34 is the same as the diameter of the other end of the first sealing part 33. When the force applied to the sealing plug tube 4 is large enough to extrude the sealing plug tube 4 into the second sealing part 34, the cylindrical second sealing part 34 can further increase the contact area between the inner wall of the sealing sleeve 3 and the sealing plug tube 4, and the large enough sealing surface can further ensure the sealing performance.
[0034] In a more preferable embodiment, the lumen in the sealing sleeve 3 also has a threading portion 35 connected with the second sealing portion 34, and the diameter of the threading portion 35 is smaller than that of the second sealing portion 34. By the diameter difference between the threading portion 35 and the second sealing portion 34, when the sealing plug tube 4 is extruded to the connection between the second sealing portion 34 and the threading portion 35, the end surface of the sealing plug tube 4 can abut against the end surface of the connection between the threading portion 35 and the second sealing portion 34, further improving the sealing performance.
[0035] In a more preferable embodiment, the inner diameter of the sealing plug tube 4 is equal to or smaller than the diameter of the threading portion 35.
[0036] In a more preferable embodiment, the locking sleeve 5 has, from one end to the other end, in sequence, an abutting portion 51, a second threaded portion 52 for threaded connection with the first threaded portion 31, and a mounting portion 53, the abutting portion 51 extends into the connecting portion 32, and one end of the sealing plug tube 4 abuts against the end of the abutting portion 51. The driving force for extruding the abutting portion to extrude the sealing plug tube 4 is provided by the threaded connection between the first threaded portion 31 and the second threaded portion 52, and the sealing is achieved.
[0037] In a more preferable embodiment, the mounting portion 53 is provided in a prismatic shape. Specifically, the mounting portion 53 is provided in a cuboid shape, facilitating the installation of the locking sleeve 5 by using a wrench or the like, and improving the installation convenience.
[0038] Thanks to the above technical solution, the utility model has the following advantages compared with the prior art:
[0039] The utility model discloses a high acceleration life test box wire inlet sealing device, simple structure, convenient installation, through the concentrator, the wire harness is concentrated, then the sealing assembly is sealed to each wire harness threading, and the sealing assembly is sequentially threaded through the locking sleeve, the sealing plug tube and the sealing sleeve, then the locking sleeve is rotated into the sealing sleeve, and the inner wall of the locking sleeve and the sealing sleeve is matched, the sealing plug tube is extruded and deformed, and the gap between the sealing plug tube and the inner wall of the sealing sleeve, and the gap between the inner wall of the sealing plug tube and the wire harness are all blocked, the sealing of the test box wire inlet is realized, the sealing property of the test box is guaranteed, the test environment is prevented from leaking and affecting the accuracy and stability of the test environment in the test box, and the electrical equipment outside the test box is prevented from being damaged by the leaking test environment, and the sealing life is low and easy to fail when the structure glue is used to block the wire threading gap.
[0040] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.
Claims
1. A high-accelerated life test chamber inlet sealing device, comprising a hub (1) provided on the wall of the test chamber, and a plurality of wire holes (11) provided in the hub (1) and extending through the inside and outside of the test chamber, characterized in that: The sealing device further comprises sealing components (2) arranged in a one-to-one correspondence within the threading holes (11), each of the sealing components (2) comprising: A sealing sleeve (3) is embedded in the threading hole (11), and the inner cavity of the sealing sleeve (3) has a first threaded portion (31), a connecting portion (32), and a first sealing portion (33) in sequence from one end to the other end. The inner diameter of the first sealing portion (33) gradually decreases from the end connected to the connecting portion (32) to the other end. A sealing plug tube (4) is arranged in the sealing sleeve (3), a portion of the sealing plug tube (4) is located in the connecting portion (32), and another portion is located in the first sealing portion (33) and the outer wall of the portion abuts against the inner wall of the first sealing portion (33), the maximum outer diameter of the sealing plug tube (4) is smaller than the diameter of one end of the first sealing portion (33), and the minimum outer diameter of the sealing plug tube (4) is larger than the diameter of the other end of the first sealing portion (33), and the sealing plug tube (4) is made of rubber; A locking sleeve (5) is inserted into the sealing sleeve (3) from one end of the sealing sleeve (3) and is threadedly connected to the first threaded portion (31). One end of the locking sleeve (5) presses against the sealing plug tube (4) and applies a force toward the other end of the sealing sleeve (3).
2. The highly accelerated life test chamber inlet sealing device according to claim 1, characterized in that: The outer diameter of the portion of the sealing plug tube (4) located within the first sealing portion (33) gradually decreases in a direction from one end of the sealing plug tube (4) where the sealing plug tube (4) abuts against the locking sleeve (5) to the other end.
3. The high-accelerated life test chamber inlet sealing device according to claim 1, characterized in that: The lumen in the sealing sleeve (3) further comprises a second sealing portion (34) connected to the first sealing portion (33), and the diameter of the second sealing portion (34) is the same as the diameter of the other end of the first sealing portion (33).
4. The highly accelerated life test chamber inlet sealing device according to claim 3, characterized in that: The lumen in the sealing sleeve (3) further comprises a threading portion (35) connected to the second sealing portion (34), and the diameter of the threading portion (35) is smaller than the diameter of the second sealing portion (34).
5. The high-accelerated life test chamber inlet sealing device according to claim 4, characterized in that: The inner diameter of the sealing plug tube (4) is smaller than or equal to the diameter of the threading portion (35).
6. The high-accelerated life test chamber inlet sealing device according to claim 1, characterized in that: The locking sleeve (5) has, from one end to the other end, an abutting portion (51), a second threaded portion (52) for threaded connection with the first threaded portion (31), and a mounting portion (53). The abutting portion (51) extends into the connecting portion (32), and one end of the sealing plug tube (4) is tightly abutted against the end of the abutting portion (51).
7. The high-accelerated life test chamber inlet sealing device according to claim 6, characterized in that: The mounting portion (53) is configured in a prism shape.