A casing air tightness detection tool

Abstract

The utility model provides a casing air tightness detection tool, which includes: a first blocking piece, a second blocking piece, a fixing assembly and an air path connecting piece; the first blocking piece can detachably block the threaded hole at the bottom of the casing; the second blocking piece can detachably block the open opening at the top of the casing; the fixing assembly can be switched between a first state and a second state, in the first state, the fixing assembly clamps the casing and the second blocking piece together to make the second blocking piece close to the open opening of the casing, in the second state, the fixing assembly is separated from the casing and the second blocking piece; the air path connecting piece has a first air passage, a second air passage and a third air passage that are connected, the first air passage is connected to the second blocking piece, and the second air passage and the third air passage are both provided with switches for turning on and off the gas. The casing air tightness detection tool has a simple structure, occupies a small space and has a low manufacturing cost.

Description

Technical Field

[0001] The utility model relates to the technical field of detection tooling, in particular to a casing air tightness detection tooling. Background Art

[0002] The motor case is one of the indispensable parts of the motor, and the air tightness of the motor case is one of the important quality indicators of the motor case. In the related technology, automated equipment is used to test the air tightness of the motor case, but the existing equipment for casing air tightness testing cannot achieve the expected effect, and customized equipment is costly, occupies a large area and has poor effect. Therefore, it is necessary to propose a simple tooling for casing air tightness testing. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent. To this end, the purpose of the utility model is to provide a casing air tightness detection tool, which has a simple structure, occupies a small space and has a low manufacturing cost.

[0004] In order to achieve the above-mentioned purpose, the utility model proposes a casing air tightness detection tool, which includes: a first blocking member, a second blocking member, a fixing assembly and an air path connecting member;

[0005] The first blocking member detachably blocks the threaded hole at the bottom of the casing;

[0006] The second blocking member detachably blocks the open opening at the top of the housing;

[0007] The fixing assembly can be switched between a first state and a second state. In the first state, the fixing assembly clamps the housing and the second blocking member together to make the second blocking member close to the open opening of the housing. In the second state, the fixing assembly is disengaged from the housing and the second blocking member.

[0008] The gas path connecting member has a first gas passage, a second gas passage and a third gas passage that are connected to each other. The first gas passage is connected to the second blocking member. The second gas passage and the third gas passage are both provided with switches for switching on and off the gas.

[0009] According to a casing air tightness detection tool of an embodiment of the utility model, the lower end of the casing is blocked by a first blocking piece, the open opening of the upper end of the casing is blocked and fixed by a second blocking piece in cooperation with a fixing assembly, gas is introduced into the casing through an air path connecting piece, and then the casing is placed in a water tank to detect the air tightness of the casing. The casing air tightness detection tool has a simple structure, occupies a small space, and has a low manufacturing cost.

[0010] In addition, the housing air tightness detection tooling proposed in the above embodiment of the utility model may also have the following additional technical features:

[0011] Optionally, the first air passage is threadedly connected to the second blocking member.

[0012] Optionally, the fixing assembly has a plurality of C-shaped clips, and the plurality of C-shaped clips are evenly distributed on the second blocking member and the outer edge of the housing.

[0013] Optionally, the first blocking member 2 is a screw plug with a washer.

[0014] Optionally, a sealing gasket is provided on the fitting surface between the second sealing member and the housing.

[0015] Optionally, the gas path connecting piece is a three-way valve.

[0016] Optionally, the second blocking member is circular in shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the casing air tightness detection tool according to an embodiment of the utility model;

[0018] Figure 2 It is a front view of the casing air tightness detection tool according to an embodiment of the utility model;

[0019] Figure 3 A top view of a casing air tightness detection tool according to an embodiment of the utility model;

[0020] Figure 4 A bottom view of a casing air tightness detection tool according to an embodiment of the utility model;

[0021] Description of reference numerals:

[0022] The housing 1 , the first blocking member 2 , the second blocking member 3 , the fixing assembly 4 , the gas path connecting member 5 , the first gas passage 51 , the second gas passage 52 , the third gas passage 53 , and the switch 54 . DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0024] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0025] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] Reference below Figure 1-Figure 4 , the implementation of the air tightness detection tooling for the casing 1 proposed in an embodiment of the utility model is described in detail.

[0027] The air tightness detection tool for the housing 1 according to the embodiment of the utility model comprises: a first blocking member 2, a second blocking member 3, a fixing assembly 4 and an air path connecting member 5;

[0028] Specifically, the first blocking member 2 can detachably block the threaded hole at the bottom of the casing 1; the second blocking member 3 can detachably block the open opening at the top of the casing 1; the fixing component 4 can be switched between a first state and a second state. In the first state, the fixing component 4 clamps the casing 1 and the second blocking member 3 together to press the second blocking member 3 against the open opening of the casing 1, and in the second state, the fixing component 4 is disengaged from the abutment against the casing 1 and the second blocking member 3; the gas path connecting member 5 has a first gas passage 51, a second gas passage 52 and a third gas passage 53 that are interconnected. The first gas passage 51 is connected to the second blocking member 3, and the second gas passage 52 and the third gas passage 53 are both provided with a switch 54 for turning the gas on and off.

[0029] That is to say, the first blocking member 2 is suitable for blocking a through hole at the lower end of the casing 1, and the second blocking member 3 is suitable for blocking the open mouth at the upper end of the casing 1, and the second blocking member 3 is fixed to the open mouth of the casing 1 by the fixing component 4, so that the second blocking member 3 keeps blocking the open mouth of the casing 1, the switch 54 of the second air passage 52 is turned on, and the switch 54 of the third air passage 53 is closed, and the external air enters the casing 1 from the second air passage 52 through the first air passage 51, and then the casing 1 is placed in a water tank to observe the air tightness of the casing 1. After the inspection is completed, the fixing component 4 is used to release the fixation of the second blocking member 3 and the casing 1, the switch 54 of the third air passage 53 is turned on, and the second blocking member 3 and the first blocking member 2 are removed.

[0030] Thus, the lower end of the casing 1 is sealed by the first sealing member 2, the open opening of the upper end of the casing 1 is sealed and fixed by the second sealing member 3 and the fixing assembly 4, the gas is introduced into the casing 1 through the air path connecting member 5, and then the casing 1 is placed in the water tank to detect the air tightness of the casing 1. The casing 1 air tightness detection tooling has a simple structure, occupies a small space, and has a low manufacturing cost.

[0031] Optionally, the first air passage 51 is threadedly connected to the second blocking member 3. It can be understood that the threaded connection between the first air passage 51 and the second blocking member 3 facilitates the installation of the gas path connecting member 5, and facilitates the first air passage 51 to communicate with the housing 1 to pass gas into the housing 1. The gas path connecting member 5 can be arranged at the center of the second blocking member 3.

[0032] Optionally, the fixing assembly 4 has a plurality of C-shaped clips, which are evenly distributed on the outer edges of the second blocking member 3 and the housing 1. It can be understood that by providing a plurality of C-shaped clips, it is convenient to keep the second blocking member 3 in contact with the open opening of the housing 1 from multiple directions, thereby ensuring the reliability of the blocking. At the same time, the C-shaped clip is easy to operate, occupies a small space, and has a low cost, which is conducive to cost control and miniaturization after assembly. Among them, the number of C-shaped clips can be four.

[0033] Optionally, the first plugging member 2 is a washer screw plug. It can be understood that the threaded hole at the lower end of the housing 1 can be plugged by the washer screw plug, thereby achieving rapid plugging of the lower end of the housing 1. It is a standard product, easy to operate, conducive to cost control, and has a good plugging effect.

[0034] Optionally, a sealing gasket is provided on the mating surface of the second sealing member 3 and the housing 1. The sealing gasket can be provided to facilitate sealing the open opening of the housing 1, thereby ensuring the reliability of the sealing, wherein the sealing gasket can be entirely covered on the second sealing member 3, so that the second sealing member 3 can adapt to the sealing of housings 1 of different specifications, thereby improving the versatility of the second sealing member 3.

[0035] Optionally, the gas path connecting member 5 is a three-way valve. It can be understood that by using a standard three-way valve, installation is simple, cost control is convenient, and replacement is convenient.

[0036] Optionally, the second blocking member 3 is circular. It can be understood that the circular shape of the second blocking member 3 can reduce the difficulty of processing the second blocking member 3, and at the same time facilitate the cooperation with the circular opening of the housing 1, thereby improving the compatibility of the second blocking member 3. The second blocking member 3 can be a metal member with a sealing gasket, which is conducive to improving the service life of the second blocking member 3.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0042] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A casing air tightness detection tool, characterized in that: include: A first blocking member, a second blocking member, a fixing assembly and a gas path connecting member; The first blocking member detachably blocks the threaded hole at the bottom of the casing; The second blocking member detachably blocks the open opening at the top of the housing; The fixing assembly can be switched between a first state and a second state. In the first state, the fixing assembly clamps the housing and the second blocking member together to make the second blocking member close to the open opening of the housing. In the second state, the fixing assembly is disengaged from the housing and the second blocking member. The gas path connecting member has a first gas passage, a second gas passage and a third gas passage that are connected to each other. The first gas passage is connected to the second blocking member. The second gas passage and the third gas passage are both provided with switches for switching on and off the gas.

2. The casing air tightness detection tool as claimed in claim 1, characterized in that: The first air passage is threadedly connected to the second blocking member.

3. The casing air tightness detection tool as claimed in claim 1, characterized in that: The fixing assembly has a plurality of C-shaped clips, and the plurality of C-shaped clips are evenly distributed on the second blocking member and the outer edge of the housing.

4. The casing air tightness detection tool as claimed in claim 1, characterized in that: The first blocking member is a screw plug with a washer.

5. The casing air tightness testing tool as claimed in claim 1, characterized in that: A sealing member is provided on the mating surface between the second blocking member and the housing.

6. The casing air tightness testing tool as claimed in claim 1, characterized in that: The gas path connecting piece is a three-way valve.

7. The casing air tightness testing tool as claimed in claim 1, characterized in that: The second blocking member is circular in shape.

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