Drawing type plug for air tightness detection

Abstract

The utility model provides a pull-out type plug for airtightness detection. The pull-out type plug comprises a supporting piece; an insertion hole is formed in one end of the supporting piece; an annular clamping position is arranged on the inner side of the insertion hole and is used for limiting one end of the battery pack cooling pipe; a notch is formed in one side of the supporting piece; the notches are communicated with the jacks above and below the clamping positions, so that one ends of the battery pack cooling pipes can enter the jacks from the notches; a through hole communicated with the outside of the supporting piece is formed in the bottom center of the inserting hole; a pull rod; the first end of the pull rod is arranged outside the supporting piece; the second end of the pull rod is arranged in the insertion hole through the through hole; a plug; the plug is positioned below the clamping position in the insertion hole; a rubber pad is arranged on the first side, close to the clamping position, of the plug; the second side, close to the bottom of the jack, of the plug is connected with the second end of the pull rod; an elastic member; and the elastic piece is positioned between the second side of the plug and the bottom of the jack. The end opening of the cooling pipe can be tightly plugged by the plug, operation is fast, and physical strength is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of air tightness detection tools, in particular to a pull-out plug for air tightness detection. Background Art

[0002] With the development of new energy vehicles, the number of new energy vehicles in use is increasing, and the workload of inspection and maintenance of new energy vehicles is also increasing, which puts higher requirements on the inspection and maintenance speed of new energy vehicles.

[0003] The battery pack of a new energy vehicle is generally equipped with a cooling mechanism based on the liquid cooling principle. The coolant flows into the battery pack through a pipe. After heat exchange in the battery pack, the heated coolant flows out of the battery pack through another outlet, thereby achieving the purpose of cooling the battery pack. In order to prevent the coolant from leaking inside the battery pack, the cooling pipe needs to be tested for sealing to ensure that the pipe meets the sealing requirements. When testing the sealing of the cooling pipe, the general method is to plug the outlet of the pipe with a plug, and then fill the inlet of the pipe with pressurized gas or coolant to detect whether the pipe is leaking.

[0004] In the existing maintenance technology, the pipe outlet is blocked manually by plugging it with a plug. This method is not only inefficient but also consumes a lot of manual labor and is inconvenient to operate. Utility Model Content

[0005] The purpose of this utility model is to provide a pull-out plug for airtightness detection, thereby overcoming the shortcomings of the prior art, such as low efficiency, high manual labor consumption, and inconvenient operation. The specific technical solution is as follows:

[0006] A pull-out plug for air tightness detection, comprising:

[0007] A support member; one end of the support member is provided with a socket; the inner side of the socket is provided with an annular retaining portion for limiting one end of the battery pack cooling tube; one side of the support member is provided with a notch; the notch connects the sockets above and below the retaining portion, so that one end of the battery pack cooling tube can enter the socket through the notch; a through hole is provided at the bottom center of the socket to connect to the outside of the support member;

[0008] A pull rod; a first end of the pull rod is disposed outside the support member; a second end of the pull rod is disposed in the insertion hole through a through hole;

[0009] The plug is located below the locking position in the socket; a rubber pad is provided on the first side of the plug near the locking position; the second side of the plug near the bottom of the socket is connected to the second end of the pull rod;

[0010] Elastic member; the elastic member is located between the second side of the plug and the bottom of the socket.

[0011] Furthermore, the elastic member is sleeved on the pull rod.

[0012] Furthermore, the elastic member adopts a spring structure.

[0013] Furthermore, the elastic member is made of a rubber pad material.

[0014] Furthermore, a pull plate is provided on the first end of the pull rod.

[0015] Furthermore, the side wall of the support member is retained on only one side of the notch.

[0016] Furthermore, support member side walls are retained on both sides of the notch.

[0017] Furthermore, the notch runs through both sides of the support member.

[0018] Furthermore, the width of the notch below the locking position is greater than that of other parts.

[0019] Furthermore, a knurled pattern is provided on the outer surface of the support member.

[0020] Compared with the existing technology, the utility model has the following beneficial effects:

[0021] 1. In the utility model, by pulling the pull rod, the internal space of the socket between the plug and the latch is vacated, and the elastic part is pressed to generate a restoring elastic force, so that the cooling pipe can enter the socket from the gap. After the pull rod is released, the plug is pushed to block the port of the cooling pipe under the restoring elastic force of the elastic part. At the same time, the latch limits the port of the cooling pipe to prevent the cooling pipe from moving relative to the support part, so that the plug can tightly block the port of the cooling pipe, which is quick to operate and saves physical effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly describes the drawings required for describing the embodiments. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0023] Figure 1 This is a schematic diagram of the pull-out plug structure for the first type of air tightness testing.

[0024] Figure 2 This is a schematic diagram of the pull-out plug structure for the second type of air tightness testing.

[0025] Description of main reference numerals:

[0026] Support member 1, insertion hole 11, locking position 12, notch 13, plug 2, rubber pad 21, pull rod 3, pull plate 31, elastic member 4. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "top", "bottom", "top surface", "bottom surface", "inside", "outside", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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 to the present invention.

[0029] In the description of this utility model, "several" means one or more, "more" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The terms "first," "second," and "third" are used solely for descriptive purposes and to distinguish technical features, and are not to be construed as indicating or implying relative importance, or implicitly specifying the number or order of the technical features indicated.

[0030] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances. The following describes an embodiment of the present invention based on its overall structure.

[0031] Example 1

[0032] like Figure 1 The figure shows the structure of the first type of pull-out plug 2 for air tightness testing, including:

[0033] Support member 1; the support member 1 serves as a supporting carrier for the plug 2 and is used to support the operation of other components; one end of the support member 1 is provided with a socket 11 for inserting a cooling pipe port with a boss; further, the outer portion of the support member 1 adopts a cylindrical structure for easy operation and gripping; further, the support member 1 is made of aluminum alloy, which can reduce weight as much as possible while ensuring strength; the inner side of the socket 11 is provided with an annular clamping position 12 for limiting the boss at one end of the battery pack cooling pipe; a notch 13 is provided on one side of the support member 1; the notch 13 connects the sockets 11 above and below the clamping position 12, that is, the notch 13 removes one side wall of the support member 1 together with the clamping position 12 thereon, so that one end of the battery pack cooling pipe can enter the socket 11 from the notch 13; the bottom center of the socket 11 is provided with a through hole connected to the outside of the support member 1;

[0034] Pull rod 3; the first end of the pull rod 3 is provided on the outside of the support member 1; the second end of the pull rod 3 is provided in the insertion hole 11 through a through hole;

[0035] The plug 2 is located below the latch 12 in the socket 11; a rubber pad 21 is provided on a first side of the plug 2 near the latch 12, and the specific material can be latex; the second side of the plug 2 near the bottom of the socket 11 is connected to the second end of the pull rod 3;

[0036] Elastic member 4; the elastic member 4 is located between the second side of the plug 2 and the bottom of the socket 11, providing elastic force for the return of the plug 2.

[0037] In the present invention, by pulling the pull rod 3, the internal space of the socket 11 between the plug 2 and the latch 12 is vacated. At this time, the elastic member 4 is pressed to generate a restoring elastic force; the cooling pipe can enter the socket 11 from the notch 13. After loosening the pull rod 3, the plug 2 is pushed to block the port of the cooling pipe under the restoring elastic force of the elastic member 4. At the same time, the latch 12 limits the port of the cooling pipe to prevent the cooling pipe from moving relative to the support member 1, so that the plug 2 can tightly block the port of the cooling pipe, which is quick to operate and saves physical effort.

[0038] In a specific implementation, the elastic member 4 is sleeved on the pull rod 3 , so that the elastic member 4 can maintain a constant position during operation, preventing the elastic member 4 from falling out of the support member 1 through the notch 13 .

[0039] In a specific implementation, the elastic member 4 adopts a spring structure, which is an existing mature technical structure and can reduce the manufacturing cost of the entire device.

[0040] In a specific implementation, a pulling plate 31 is provided on the first end of the pulling rod 3 to increase the force-bearing surface when the pulling rod 3 is pulled, thereby facilitating the pulling operation.

[0041] In a specific implementation, only one side of the notch 13 retains the side wall of the support member 1. Furthermore, the notch 13 occupies half the size of the support member 1, so that there is enough space for the cooling pipe to be placed into the socket 11 through the notch 13.

[0042] In a specific implementation, a knurled pattern is provided on the outer surface of the support member 1 to increase the resistance of the side of the support member 1 and prevent the hand from slipping when holding it.

[0043] Example 2

[0044] like Figure 2 The figure shows the structure of the second type of pull-out plug 2 for air tightness testing, including:

[0045] Support member 1; the support member 1 serves as a supporting carrier for the plug 2 and is used to support the operation of other components; one end of the support member 1 is provided with a socket 11 for inserting a cooling pipe port with a boss; further, the outer portion of the support member 1 adopts a cylindrical structure for easy operation and gripping; further, the support member 1 is made of aluminum alloy, which can reduce weight as much as possible while ensuring strength; the inner side of the socket 11 is provided with an annular clamping position 12 for limiting the boss at one end of the battery pack cooling pipe; a notch 13 is provided on one side of the support member 1; the notch 13 connects the sockets 11 above and below the clamping position 12, that is, the notch 13 removes one side wall of the support member 1 together with the clamping position 12 thereon, so that one end of the battery pack cooling pipe can enter the socket 11 from the notch 13; the bottom center of the socket 11 is provided with a through hole connected to the outside of the support member 1;

[0046] Pull rod 3; the first end of the pull rod 3 is provided on the outside of the support member 1; the second end of the pull rod 3 is provided in the insertion hole 11 through a through hole;

[0047] The plug 2 is located below the latch 12 in the socket 11; a rubber pad 21 is provided on a first side of the plug 2 near the latch 12, and the specific material can be latex; the second side of the plug 2 near the bottom of the socket 11 is connected to the second end of the pull rod 3;

[0048] Elastic member 4; the elastic member 4 is located between the second side of the plug 2 and the bottom of the socket 11, providing elastic force for the return of the plug 2.

[0049] In the present invention, by pulling the pull rod 3, the internal space of the socket 11 between the plug 2 and the latch 12 is vacated. At this time, the elastic member 4 is pressed to generate a restoring elastic force; the cooling pipe can enter the socket 11 from the notch 13. After loosening the pull rod 3, the plug 2 is pushed to block the port of the cooling pipe under the restoring elastic force of the elastic member 4. At the same time, the latch 12 limits the port of the cooling pipe to prevent the cooling pipe from moving relative to the support member 1, so that the plug 2 can tightly block the port of the cooling pipe, which is quick to operate and saves physical effort.

[0050] In a specific implementation, the elastic member 4 is sleeved on the pull rod 3 , so that the elastic member 4 can maintain a constant position during operation, preventing the elastic member 4 from falling out of the support member 1 through the notch 13 .

[0051] In a specific implementation, a pulling plate 31 is provided on the first end of the pulling rod 3 to increase the force-bearing surface when the pulling rod 3 is pulled, thereby facilitating the pulling operation.

[0052] In a specific implementation, a knurled pattern is provided on the outer surface of the support member 1 to increase the resistance of the side of the support member 1 and prevent the hand from slipping when holding it.

[0053] In a specific implementation, the side walls of the support member 1 are retained on both sides of the notch 13, that is, the notch 13 passes through the middle of the support. Furthermore, the notch 13 passes through both sides of the support member 1, so that when the locking position 12 is limited and the plug 2 blocks the cooling pipe, the force can be evenly applied, preventing one side of the contact surface from tilting and leaking.

[0054] In a specific implementation, the width of the notch 13 below the locking position 12 is larger than that of other parts, so that the boss on the cooling pipe port can pass through the notch 13 and enter the socket 11, and the locking position 12 can limit the boss.

[0055] In a specific implementation, the elastic member 4 is made of a rubber pad 21 to increase the service life of the elastic member 4 .

[0056] Next, the working principle of this embodiment is described in detail to enable those skilled in the art to better understand the present invention:

[0057] First, manually pull the pull plate 31, causing the pull rod 3 to retract the plug 2 toward the bottom of the socket 11, leaving space inside the socket 11 for the cooling pipe. Then, insert the end of the cooling pipe into the socket 11 through the notch 13, with the boss on the end of the cooling pipe located below the latch 12. Finally, release the pull plate 31, and the pull rod 3 and plug 2 will return to their original position due to the elastic force of the elastic member 4. The rubber pad 21 on the plug 2 will block the end of the cooling pipe, achieving a sealing effect.

[0058] In summary, the present application provides a pull-out plug for air tightness detection, comprising: a support member; a socket is provided at one end of the support member; a ring-shaped latch is provided on the inner side of the socket for limiting one end of the battery pack cooling tube; a notch is provided on one side of the support member; the notch connects the sockets above and below the latch, so that one end of the battery pack cooling tube can enter the socket from the notch; a through hole connected to the outside of the support member is provided at the bottom center of the socket; a pull rod; the first end of the pull rod is provided on the outside of the support member; the second end of the pull rod is provided in the socket through the through hole; a plug; the plug is located below the latch in the socket; a rubber pad is provided on the first side of the plug close to the latch; the second side of the plug close to the bottom of the socket is connected to the second end of the pull rod; an elastic member; the elastic member is located between the second side of the plug and the bottom of the socket. By pulling the pull rod, the internal space of the socket between the plug and the latch is vacated. At this time, the elastic part is pressed to generate a restoring elastic force, allowing the cooling pipe to enter the socket from the gap. After loosening the pull rod, the plug is pushed to block the port of the cooling pipe under the restoring elastic force of the elastic part. At the same time, the latch limits the port of the cooling pipe to prevent the cooling pipe from moving relative to the support part, so that the plug can tightly block the port of the cooling pipe, which is quick to operate and saves physical effort.

[0059] The foregoing descriptions of specific exemplary embodiments of the present invention are for the purpose of illustration and description. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials or characteristics described can be combined in an appropriate manner in any one or more embodiments or examples. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can make modifications, substitutions, variations and various different choices and changes to the embodiments without creative contribution as needed after reading this specification without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A pull-out plug for air tightness detection, characterized in that: include: A support member; one end of the support member is provided with a socket; the inner side of the socket is provided with an annular retaining portion for limiting one end of the battery pack cooling tube; one side of the support member is provided with a notch; the notch connects the sockets above and below the retaining portion, so that one end of the battery pack cooling tube can enter the socket through the notch; a through hole is provided at the bottom center of the socket to connect to the outside of the support member; A pull rod; a first end of the pull rod is disposed outside the support member; a second end of the pull rod is disposed in the insertion hole through a through hole; The plug is located below the locking position in the socket; a rubber pad is provided on the first side of the plug near the locking position; the second side of the plug near the bottom of the socket is connected to the second end of the pull rod; Elastic member; the elastic member is located between the second side of the plug and the bottom of the socket.

2. The pull-out plug for airtightness detection according to claim 1, characterized in that: The elastic member is sleeved on the pull rod.

3. The pull-out plug for airtightness detection according to claim 2, characterized in that: The elastic member adopts a spring structure.

4. The pull-out plug for airtightness detection according to claim 2, characterized in that: The elastic member is made of rubber pad material.

5. The pull-out plug for airtightness detection according to claim 1, characterized in that: A pull plate is provided on the first end of the pull rod.

6. The pull-out plug for airtightness detection according to claim 1, characterized in that: The side wall of the support member is retained on only one side of the notch.

7. The pull-out plug for airtightness detection according to claim 1, characterized in that: Supporting member side walls are retained on both sides of the notch.

8. The pull-out plug for airtightness detection according to claim 7, characterized in that: The width of the portion of the notch below the locking position is greater than that of other portions.

9. The pull-out plug for airtightness detection according to claim 7, characterized in that: The notch runs through both sides of the support member.

10. The pull-out plug for airtightness detection according to any one of claims 1 to 9, characterized in that: The outer surface of the support member is provided with a knurling pattern.

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