CN214538408U

CN214538408U - Air tightness detection tool

Info

Publication number: CN214538408U
Application number: CN202120793273.1U
Authority: CN
Inventors: 于拴柱; 陈许超; 孙立新; 梁建鹏
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-10-29
Anticipated expiration: 2031-04-16

Abstract

The utility model provides an air tightness detection tool, which is used for carrying out air tightness detection on a component provided with a sealing element, the sealing element is positioned at one end of the component, the air tightness detection tool comprises a tool main body, an accommodating block and a detection box, wherein the accommodating block is fixedly connected to the tool main body, the containing block is provided with a loading part for loading the component, one end of the component with the sealing element is exposed out of the containing block along with the loading of the component on the loading part, the detection box is slidably arranged on the tool main body, and can bear external force to drive and press the holding block, an inflation cavity is constructed in the detection box, a vent hole for communicating the inflation cavity with an external air source is arranged on the detection box, and the detection hole is communicated with the inflation cavity, the detection hole is arranged corresponding to the component and is pressed on the accommodating block along with the detection box, and the component is matched with the sealing element to form the blockage of the detection hole. The utility model discloses an air tightness detection tool simple structure, and can do benefit to the air tightness performance that detects the component to there is better result of use.

Description

Air tightness detection tool

Technical Field

The utility model relates to a battery package spare part detection device technical field, in particular to gas tightness detects frock.

Background

The modern automobile industry is revolutionarily changing, that is, the traditional fuel automobile is gradually replaced by a new energy automobile, wherein, the pure electric automobile is emerging as one of the new energy automobile, and many fuel transmission vehicle platforms directly change the automobile power source from a fuel engine structure to a power battery pack structure. With the rapid development of new energy automobiles, the safety problem becomes the most concerned focus of the market. For the power battery assembly, the air tightness of the battery pack is crucial, and particularly, the air tightness verification is required for each part of the battery pack, which is used and relates to sealing, so as to ensure the reliability of the power battery assembly.

At present, the airtight detection of the small-sized parts related to sealing at the present stage is difficult, most of the small-sized parts depend on a power battery pack to carry out airtight verification, and the detection result of the small-sized parts is not ideal and persuasive is not good enough.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing an airtightness detection tool to do benefit to the airtightness of component and detect.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides an airtightness detection tool for airtightness detection is carried out to the component that is equipped with sealing element, sealing element is located the one end of component, just airtightness detection tool includes:

a tool main body;

the containing block is fixedly connected to the tool main body, is provided with a loading part for loading a component and is exposed out of the containing block along with the loading of the component on the loading part;

the detection box is slidably arranged on the tool main body and can bear external force to drive the detection box to be compressed on the containing block, an inflation cavity is constructed in the detection box, an air vent for communicating the inflation cavity with an external air source and a detection hole communicated with the inflation cavity are formed in the detection box, the detection hole is arranged corresponding to the component and is compressed on the containing block along with the detection box, and the component is matched with the sealing element to form a plug for the detection hole.

Furthermore, a driving device is arranged on the tool main body, the detection box is connected to a power output end of the driving device, and the driving device provides the external force.

Further, the driving device comprises a pressing cylinder arranged on the tool main body.

Further, the tool main body comprises a base and a guide post fixedly connected to the base, the accommodating block is arranged on the base, and the detection box slides on the guide post in a guiding manner.

Furthermore, the accommodating block is made of nylon.

Furthermore, the detection box includes two end plates of opposite arrangement, and link firmly in two the bounding wall between the end plate, each the end plate reaches the bounding wall is injectd the inflation chamber, just the air vent is located on the bounding wall, the inspection hole is located one of it on the end plate.

Furthermore, the tool main body is provided with a pushing device which pushes the component out of the accommodating block.

Further, the pushing device comprises a pushing cylinder fixedly connected to the tool main body and a pushing piece connected to a power output end of the pushing cylinder.

Furthermore, the tool main body is provided with a communicating hole corresponding to the loading part, and the pushing piece slides in the communicating hole.

Further, the component is a sealing bolt, the sealing bolt is provided with a nut and a stud, the sealing element is a sealing ring arranged on the outer end face of the nut, the loading part is a containing hole formed on the containing block, and the stud is inserted into the containing hole.

Compared with the prior art, the utility model discloses following advantage has:

(1) gas tightness detect frock, through the frock main part that sets up, load the holding piece that has the component to and for the detection case of frock main part slidable setting, make component and sealing element cooperation form and carry out the shutoff to the inspection hole on the inspection case, with fill gaseous back in to the detection case, do benefit to the shutoff effect of detection component to the inspection hole, reflect the gas tightness performance of component, thereby do benefit to and detect the gas tightness of component, and there is better result of use.

(2) The drive arrangement who sets up makes the detection case easily laborsaving along the slip of frock main part on the one hand, and on the other hand can compress tightly the holding piece for the detection case and provide external force.

(3) The driving device adopts a pressing cylinder, the technology is mature, and the operation and implementation are convenient.

(4) The guide post that sets up does benefit to the direction slip of detection case.

(5) The holding block is made of nylon, and can play a good protection role on the component.

(6) The pushing device is arranged, so that the component can be conveniently pushed out of the containing hole, and the component can be conveniently taken.

(7) The pushing device adopts the air cylinder, has simple structure and is easy to design and implement.

(8) The component is a sealing bolt, the stud is inserted into the accommodating hole, and the screw cap and the sealing ring are matched to block the detection hole, so that the air tightness of the sealing bolt can be detected.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural view of an air tightness detection tool according to an embodiment of the present invention;

fig. 2 is an exploded view of the air tightness detection tool according to the embodiment of the present invention;

fig. 3 is a cross-sectional view of an air tightness detection tool according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of another state of the air-tightness detection tool according to the embodiment of the present invention;

fig. 5 is a schematic structural diagram of a sealing bolt according to an embodiment of the present invention;

description of reference numerals:

1. a tool main body; 2. an accommodating block; 3. a pushing cylinder; 4. a detection box; 5. a pressing cylinder; 6. an inflation tube; 7. fastening a bolt; 8. a connecting bolt; 10. a seal bolt; 101. a base; 102. a guide post; 201. a housing hole; 1011. a communicating hole; 401. a vent hole; 402. a detection hole; 1001. a stud; 1002. a nut; 1003. and (5) sealing rings.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are instead intended to cover the same item.

In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The embodiment relates to an air tightness detection tool, which is used for detecting the air tightness of a component with a sealing element so that a product provided with the component can have better sealing performance, wherein the component can be specifically a sealing bolt, and the sealing bolt can be specifically arranged on a battery pack shell.

Based on the above design concept, an exemplary structure of the air tightness detection tool of the present embodiment is shown in fig. 1 to 4, and the tool mainly includes a tool main body 1, an accommodating block 2, and a detection box 4. In the present embodiment, a seal bolt having a sealing element is taken as an example, and the air tightness of the seal bolt is detected. That is, the member to be detected is a seal bolt 10, the structure of which is shown in fig. 5, the seal bolt 10 has a nut 1002 and a stud 1001, and a seal ring 1003 is provided on the outer end surface of the nut 1002, and the seal ring 1003 constitutes the above-mentioned sealing element.

It can be understood that the air tightness detecting tool of the present embodiment can also perform air tightness detection on other small parts having a sealing element, specifically, for example, a sealing end cover, etc., by installing the component on the loading portion, one end having the sealing element is exposed relative to the loading portion, so that the component is matched with the sealing element and forms a plug for the detecting hole 402 by pressing the detecting box 4 on the accommodating block 2, and at this time, for detection of different components, only the accommodating block 2 which is correspondingly replaced to load different components is needed. It should be noted that the loading portion disposed on the accommodating block 2 needs to be correspondingly configured corresponding to the specific shape of different components.

The air tightness detection tool will be described in detail below by taking the detection of the seal bolt 10 as an example.

In order to facilitate the air tightness detection of the sealing bolt 10, the air tightness detection tool of the present embodiment mainly includes a tool main body 1, an accommodating block 2, and a detection box 4, as mentioned above. Referring to fig. 1 to 4, the receiving block 2 is fixedly connected to the tool body 1, the loading portion is a receiving hole 201 formed in the receiving block 2, and the stud 1001 of the seal bolt 10 is inserted into the receiving hole 201. The detection box 4 is slidably arranged on the tool main body 1 and can bear external force to be driven to be compressed on the accommodating block 2, an inflation cavity is constructed in the detection box 4, a vent hole 401 communicated with the inflation cavity and an external air source and a detection hole 402 communicated with the inflation cavity are arranged on the detection box 4, the detection hole 402 is arranged corresponding to the sealing bolt 10 and is matched with the sealing ring 1003 to form plugging of the detection hole 402 along with the compression of the detection box 4 on the accommodating block 2.

Therefore, an external air source can fill air with certain pressure into the inflation cavity through the inflation tube 6 connected to the vent 401, and the detection of the air tightness of the sealing bolt 10 is facilitated by detecting the pressure change of the filled air.

In a specific structure, as shown in fig. 1 to 4, the tool main body 1 mainly includes a base 101 and a guide post 102 fixedly connected to the base 101, wherein the accommodating block 2 is fixedly connected to the base 101 through a connecting bolt 8, and the detection box 4 slides on the guide post 102 in a guiding manner. In order to improve the smoothness of the detection box 4 in movement, in the present embodiment, the guide posts 102 are arranged at intervals along the circumferential direction of the base 101, and the number of the guide posts 102 is preferably four. Of course, it is understood that the number of guide posts 102 may be any number other than the four described above.

With continued reference to fig. 1 to 4, the detection box 4 of the present embodiment includes two end plates disposed opposite to each other, and a surrounding plate fixedly connected between the two end plates, each of the end plates and the surrounding plate defining an inflation cavity, the ventilation hole 401 is disposed on the surrounding plate, and the detection hole 402 is disposed on one of the end plates, so as to facilitate the sealing of the detection hole 402 by the sealing bolt 10, on the one hand, and the connection of an external air source to the detection box 4, on the other hand.

It should be noted that the accommodating block 2 in this embodiment is preferably made of nylon, so as to protect the sealing bolt 10 to a certain extent, thereby ensuring that the sealing bolt 10 does not damage the surface coating during the airtight detection process.

In order to facilitate the sliding of the detection box 4 along the tool main body 1, in this embodiment, a driving device is arranged on the tool main body 1, as shown in fig. 1 to 4, the driving device is fixedly connected to the tool main body 1 and is located above the accommodating block 2, the detection box 4 is connected to a power output end of the driving device, and external force is provided by the driving device, so that the detection box 4 is favorably compressed on the accommodating block 2.

Specifically, this drive arrangement is including locating the pressure cylinder 5 on the frock main part 1, through the drive of pressure cylinder 5 for detection case 4 can reciprocate along guide post 102, and can be comparatively accurate control detection case 4's stroke, and when sealing bolt 10 carried out airtight test, can guarantee the compliance of the compression volume of sealing washer 1003 and the compression volume when using state, thereby can improve the precision of test.

In this embodiment, the detection box 4 is driven to reciprocate along the guide post 102 by the pressing cylinder 5, so that the structure is simple, the installation of the sealing bolt 10 and the pressing of the accommodating block 2 are facilitated, and meanwhile, the detection precision is improved.

It is understood that the driving device of the present embodiment may also adopt a linear motor or other driving structure besides the pressing cylinder 5 as described above. In addition, it can be understood that the accommodating block 2 and the pressing cylinder 5 may be arranged horizontally in addition to the vertical arrangement in the present embodiment.

In order to facilitate the removal of the sealing bolt 10, as shown in fig. 1 to 4, a pushing device for pushing the stud 1001 out of the accommodating block 2 is disposed on the tool main body 1 of this embodiment, the pushing device is located below the accommodating block 2, and the pushing device specifically includes a pushing cylinder 3 fixedly connected to the tool main body 1, and a pushing member connected to a power output end of the pushing cylinder 3. The pushing cylinder 3 is fixedly connected to the tool body 1 through a fastening bolt 7, the pushing member can be a pushing rod fixedly connected to a power output end of the pushing cylinder 3, and other components can be used for pushing the sealing bolt 10.

Further, to facilitate the pushing operation of the pushing member, a communicating hole 1011 is formed on the tool main body 1, that is, the base 101, corresponding to the accommodating hole 201, and the pushing member slides in the communicating hole 1011. Therefore, the pushing piece can smoothly push out the sealing bolt 10 from the containing hole 201 under the driving of the pushing cylinder 3, thereby being beneficial to taking the sealing bolt 10 and improving the detection efficiency.

Of course, it is understood that, besides the pushing member is used to push the sealing bolt 10, the sealing bolt 10 can be directly pushed by the piston rod of the pushing cylinder 3.

When the air tightness detection tool is used specifically, firstly, the stud 1001 of the sealing bolt 10 is placed in the accommodating hole 201, then the pressing cylinder 5 is started, the detection box 4 is driven to press the accommodating block 2 downwards, and the sealing bolt 10 to be detected is enabled to be plugged in the detection hole 402. And then, filling gas with certain pressure into the inflation cavity through an external gas source, maintaining the pressure for a certain time, and detecting the plugging effect of the sealing bolt 10 on the detection hole 402 by detecting the change of the gas pressure in the inflation cavity, so that the gas tightness of the sealing bolt 10 can be better detected.

The gas tightness of this embodiment detects frock simple structure, and the cost is lower, and does benefit to the gas tightness to the component and detect to can do benefit to the precision that improves the test, thereby can improve the reliability of product, have better result of use simultaneously.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an airtightness detection tool for carry out airtightness to the component that is equipped with sealing element and detect its characterized in that: the sealing element is located at one end of the component, and the air tightness detection tool comprises:

a tool body (1);

the accommodating block (2) is fixedly connected to the tool main body (1), the accommodating block (2) is provided with a loading part for loading the component, and one end of the component, which is provided with the sealing element, is exposed out of the accommodating block along with the loading of the component on the loading part;

the detection box (4) is slidably arranged on the tool main body (1) and can bear external force to drive the detection box to be pressed on the accommodating block (2), an inflation cavity is constructed in the detection box (4), and a vent hole (401) for communicating the inflation cavity with an external air source and a detection hole (402) for communicating the inflation cavity with the external air source are formed in the detection box (4); the detection hole (402) is arranged corresponding to the component, and the component is matched with the sealing element to form a sealing plug for the detection hole (402) along with the compression of the detection box (4) on the accommodating block (2).

2. The airtightness detection tool according to claim 1, wherein: the tool main body (1) is provided with a driving device, the detection box (4) is connected to a power output end of the driving device, and the driving device provides the external force.

3. The airtightness detection tool according to claim 2, wherein: the driving device comprises a pressing cylinder (5) arranged on the tool main body (1).

4. The airtightness detection tool according to claim 1, wherein: the tool main body (1) comprises a base (101) and a guide column (102) fixedly connected to the base (101), the accommodating block (2) is arranged on the base (101), and the detection box (4) slides on the guide column (102) in a guiding mode.

5. The airtightness detection tool according to claim 1, wherein: the accommodating block (2) is made of nylon.

6. The airtightness detection tool according to claim 1, wherein: the detection box (4) comprises two end plates which are oppositely arranged and a coaming which is fixedly connected between the two end plates, each end plate and the coaming define the inflation cavity, the vent holes (401) are arranged on the coaming, and the detection holes (402) are arranged on one of the end plates.

7. The airtightness detection tool according to claim 1, wherein: the tool main body (1) is provided with a pushing device which pushes the component out of the accommodating block (2).

8. The airtightness detection tool according to claim 7, wherein: the pushing device comprises a pushing cylinder (3) fixedly connected to the tool main body (1) and a pushing piece connected to a power output end of the pushing cylinder (3).

9. The airtightness detection tool according to claim 8, wherein: the tool main body (1) is provided with a communicating hole (1011) corresponding to the loading part, and the pushing piece slides in the communicating hole (1011).

10. The airtightness detection tool according to any one of claims 1 to 9, wherein: the component is a sealing bolt (10) which is provided with a nut (1002) and a stud (1001), and the sealing element is a sealing ring (1003) arranged on the outer end face of the nut (1002); the loading part is an accommodating hole (201) formed in the accommodating block (2), and the stud (1001) is inserted into the accommodating hole (201).