Tool jig for air tightness test

Abstract

The utility model discloses a tool jig for air tightness testing. The tool jig comprises a base, a positioning block, a stop block, a pressing block and a manual driving mechanism. The positioning block, the stopping block and the manual driving mechanism are all connected to the base, the stopping block and the pressing block are arranged in a spaced mode to form a containing space for containing an object to be tested, and the positioning block is used for positioning the position, relative to the base, of the object to be tested; the pressing block is used for blocking a breathable part on the object to be tested, the manual driving mechanism is connected with the pressing block and used for driving the pressing block to be close to or away from the stopping block in the X direction, and when the pressing block and the stopping block jointly clamp the object to be tested, the manual driving mechanism is in a self-locking state; the utility model mainly solves the technical problem of how to block a breathable part on an object before an air tightness test is carried out on the object.

Description

Technical Field

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

[0002] Current air tightness tests typically involve introducing gas into the object to be tested, then placing the object in a water tank and observing whether bubbles appear. The presence of bubbles indicates insufficient air tightness, while the absence of bubbles indicates good air tightness. However, some products have permeable components on their outer walls (e.g., valves or membranes). These components must be blocked and sealed before testing for air tightness. Therefore, a tooling fixture specifically designed for air tightness testing is needed to enable this blocking of permeable components. Utility Model Content

[0003] The utility model provides a tooling fixture for air tightness testing, which mainly solves the technical problem of how to block the air permeable components on an object before performing an air tightness test on the object.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A tooling fixture for air tightness testing, comprising a base, a positioning block, a blocking block, a pressing block and a manual drive mechanism;

[0006] The positioning block, the blocking block, and the manual drive mechanism are all connected to the base. The blocking block and the pressing block are spaced apart to form a placement space for placing the object to be tested. The positioning block is used to locate the position of the object to be tested relative to the base. The pressing block is used to block the air-permeable component on the object to be tested. The manual drive mechanism is connected to the pressing block and is used to drive the pressing block toward or away from the blocking block along the X direction. When the pressing block and the blocking block jointly clamp the object to be tested, the manual drive mechanism is in a self-locking state.

[0007] In one of the technical solutions, the manual drive mechanism includes a quick clamp and an adapter;

[0008] The quick clamp is connected to the base, the adapter is slidably connected to the base in the X direction, the quick clamp is connected to the adapter and is used to drive the adapter to slide relative to the base along the X direction, the pressure block is fixed to the adapter, and when the pressure block and the blocking block jointly clamp the object to be tested, the quick clamp is in a self-locking state.

[0009] In one technical solution, the quick clamp includes a mounting base, a handle, a connecting rod and a telescopic rod;

[0010] The mounting base is fixed on the base, the middle part of the handle is rotatably connected to the mounting base, the end of the handle is rotatably connected to the first end of the connecting rod, the second end of the connecting rod is rotatably connected to the mounting base, the telescopic rod is slidably connected to the mounting base in the X direction, and the telescopic rod is connected to the adapter.

[0011] In one of the technical solutions, the manual drive mechanism further includes a transmission structure, which is respectively connected to the telescopic rod and the adapter, and the transmission structure enables the telescopic rod and the adapter to move in opposite directions on the straight line in the X direction.

[0012] In one of the technical solutions, the transmission structure includes a first connecting rod, a second connecting rod, a third connecting rod and a sliding rod that are hinged in sequence; the middle part of the second connecting rod is rotatably connected to the base, the end of the first connecting rod away from the second connecting rod is rotatably connected to the telescopic rod, the sliding rod is slidably connected to the base along the X direction, and the sliding rod is fixedly connected to the adapter.

[0013] In one of the technical solutions, a boss is fixed on the base, and a plug hole is provided in the middle of the second connecting rod. The boss is inserted into the plug hole, so that the second connecting rod rotates relative to the base with the central axis of the boss as the rotation axis.

[0014] In one of the technical solutions, the tooling fixture further includes a dust cover, which is fixed on the base and covers at least the transmission structure.

[0015] In one of the technical solutions, the base includes a main board and at least two extension plates fixed on the main board, the positioning blocks are provided on multiple extension plates, the blocking block is fixed on one side of the main board, and the manual drive mechanism is connected to the top of the main board.

[0016] Compared with the prior art, the tooling fixture for airtightness testing provided by the present invention has at least the following beneficial effects:

[0017] During use, the positioning block is used to dock with the object to be tested to ensure that the tooling fixture can be accurately docked with the object, so that the pressure block can be aligned with the air-permeable component (such as an air valve) on the object to be tested in the X direction. At this time, the object to be tested is located in the placement space between the blocking block and the pressure block. Then the manual drive mechanism is operated to drive the pressure block to move along the X direction, so that the pressure block and the blocking block finally clamp the object to be tested together, and the pressure block blocks the air-permeable component on the object to be tested. At this time, the manual drive mechanism is in a self-locking state to keep the pressure block always blocking the air-permeable component. At this time, the purpose of blocking the air-permeable component on the object to be tested is achieved. The tooling fixture of this scheme has the advantages of simple structure and low cost. Since the tooling fixture of this scheme is a purely mechanical mechanism that does not require electricity or ventilation, it can be placed in the water tank together with the object to be tested during the air tightness test. When the air tightness test is completed, the tested object and the tooling fixture can be separated from each other by reversing the manual drive mechanism, which has the advantage of simple operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A schematic structural diagram of a tooling fixture for air tightness testing provided in an embodiment of the present application;

[0020] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0021] Figure 3 for Figure 1 The figure shows a schematic diagram of the structure of the tooling fixture for air tightness testing when a dust cover is provided.

[0022] Reference numerals:

[0023] 1. Base; 11. Main board; 12. Extension plate; 2. Positioning block; 3. Stop block; 4. Pressing block; 5. Manual drive mechanism; 51. Quick clamp; 511. Mounting seat; 512. Handle; 513. Connecting rod; 514. Telescopic rod; 52. Adapter; 53. Transmission structure; 531. First connecting rod; 532. Second connecting rod; 5321. Connecting hole; 533. Third connecting rod; 534. Sliding rod; 6. Placement space; 7. Dust cover; 8. Boss. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0025] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0026] It should be understood that the terms, "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 on this application.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0029] See also Figure 1The embodiment of the utility model provides a tooling fixture for air tightness testing, which mainly includes a base 1, a positioning block 2, a blocking block 3, a pressure block 4 and a manual drive mechanism 5, wherein the base 1 specifically includes a main board 11 and at least two extension plates 12 fixed to the main board 11, each extension plate 12 is provided with the above-mentioned positioning block 2, the blocking block 3 is fixed to one side of the main board 11, and the manual drive mechanism 5 is connected to the top of the main board 11. This base 1 can be provided with a main board 11 and an extension plate 12 connected separately, which has the advantages of easy processing and low cost. Among them, the positioning block 2 is preferably a positioning column extending downward, and there are preferably two positioning blocks 2. Both positioning blocks 2 are used to dock with the object to be tested to ensure the position accuracy of the tooling fixture installed on the object to be tested and improve operational efficiency. Among them, the blocking block 3 and the pressing block 4 are arranged at intervals to form a placement space 6 for placing the object to be tested. The pressing block 4 is specifically used to block the breathable components (such as breathable valves) on the object to be tested. The manual drive mechanism 5 is connected to the pressing block 4 and is used to drive the pressing block 4 to approach or move away from the blocking block 3 in the X direction, and when the pressing block 4 and the blocking block 3 jointly clamp the object to be tested, the manual drive mechanism 5 will be in a self-locking state.

[0030] Specifically, when in use, the positioning block 2 is used to dock with the object to be tested to ensure that the tooling fixture can dock with the object accurately, so that the pressing block 4 can be aligned with the air-permeable component (such as an air valve) on the object to be tested in the X direction. At this time, the object to be tested is located in the placement space 6 between the blocking block 3 and the pressing block 4. Then, the manual driving mechanism 5 is operated to drive the pressing block 4 to move along the X direction, so that the pressing block 4 and the blocking block 3 finally clamp the object to be tested together. Preferably, a soft component is fixed on the blocking block 3 to avoid scratching the appearance of the object to be tested. At this time, the pressing block 4 is aligned with the air-permeable component on the object to be tested. When the air-tightness test is completed, the manual drive mechanism 5 is in a self-locking state to keep the pressure block 4 always blocking the air-permeable component. At this time, the purpose of blocking the air-permeable component on the object to be tested is achieved. The tooling fixture of this scheme has the advantages of simple structure and low cost. Moreover, since the tooling fixture of this scheme is a purely mechanical mechanism that does not require electricity or ventilation, it can be placed in the water tank together with the object to be tested during the air-tightness test. When the air-tightness test is completed, the tested object and the tooling fixture can be separated from each other by reversing the manual drive mechanism 5, which has the advantage of simple operation.

[0031] In this embodiment, the manual drive mechanism 5 specifically includes a quick clamp 51 and an adapter 52, wherein the quick clamp 51 is fixed on the base 1, and the quick clamp 51 is a prior art. The quick clamp 51 can convert the rotation of the handle into the linear movement of the telescopic rod through a connecting rod transmission. At the same time, since the quick clamp 51 adopts a connecting rod structure, it has the advantage of self-locking when the quick clamp 51 is in a locked state, wherein the adapter 52 is slidably connected to the base 1 in the X direction, and the adapter 52 is preferably slidably connected to the base 1 by connecting a guide rod and a linear bearing. The adapter 52 can also be slidably connected to the base 1 by connecting a guide rail and a slider. The quick clamp 51 is connected to the adapter 52 and is used to drive the adapter 52 to slide relative to the base 1 along the X direction. The above-mentioned pressure block 4 is fixed on the adapter 52, and when the pressure block 4 and the blocking block 3 jointly clamp the object to be tested, the quick clamp 51 will be in a self-locking state. With such a design, it is only necessary to purchase a quick clamp 51 and process an adapter 52 to quickly achieve the purpose of linear movement of the pressing block 4 along the X direction, which has the advantages of simple structure and low cost.

[0032] See also Figure 2 In fact, the quick clamp 51 specifically includes a mounting base 511, a handle 512, a connecting rod 513 and a telescopic rod 514. The mounting base 511 is fixed on the base 1, the middle part of the handle 512 is rotatably connected to the mounting base 511, the end of the handle 512 is rotatably connected to the first end of the connecting rod 513, the second end of the connecting rod 513 away from the first end is rotatably connected to the mounting base 511, and the telescopic rod 514 is slidably connected to the mounting base 511 in the X direction. The telescopic rod 514 is connected to the above-mentioned adapter 52. When the operating handle 512 is rotated, the telescopic rod 514 can be driven to extend and retract linearly along the X direction through the connecting rod 513, thereby achieving the purpose of driving the adapter 52 and the pressing block 4 to move together along the X direction.

[0033] Please continue reading Figure 2The manual drive mechanism 5 also includes a transmission structure 53, which is connected to the telescopic rod 514 and the adapter 52, respectively. The transmission structure 53 is used to cause the telescopic rod 514 and the adapter 52 to move in opposite directions along a straight line in the X direction. That is, when the telescopic rod 514 moves in the positive direction of the X direction, the adapter 52 and the pressure block 4 both move in the opposite direction of the X direction. When the telescopic rod 514 moves in the opposite direction of the X direction, the adapter 52 and the pressure block 4 both move in the positive direction of the X direction. By providing this transmission structure 53, the quick clamp 51 and the adapter 52 do not occupy excessive space in the X direction, making the overall structure of the tooling fixture more compact and reasonable. Preferably, the transmission structure 53 specifically includes a first connecting rod 531, a second connecting rod 532, a third connecting rod 533, and a sliding rod 534, which are hinged in sequence. The middle portion of the second connecting rod 532 is rotatably connected to the base 1. The end of the first connecting rod 531 away from the second connecting rod 532 is rotatably connected to the telescopic rod 514. The sliding rod 534 is slidably connected to the base 1 along the X direction and is fixedly connected to the adapter 52. When the telescopic rod 514 on the quick clamp 51 is extended or retracted, the first connecting rod 531 pushes the second connecting rod 532 to rotate relative to the base 1. The rotating second connecting rod 532 pulls the third connecting rod 533 to extend or retract, thereby pulling the sliding rod 534, the adapter 52, and the pressure block 4 to move together in the X direction. Preferably, a boss 8 is fixed on the base 1, and a plug hole 5321 is provided in the middle of the second connecting rod 532. The boss 8 is inserted into the plug hole 5321, so that the second connecting rod 532 rotates relative to the base 1 with the central axis of the boss 8 as the rotation axis.

[0034] See also Figure 3 The fixture of this embodiment also includes a dust cover 7, which is fixed to the base 1 and covers at least the transmission structure 53. This prevents large amounts of dust from entering the transmission structure 53, thus preventing the transmission structure 53 from easily getting stuck due to the ingress of large amounts of dust, thereby increasing the service life of the fixture. Preferably, the dust cover 7 also covers the adapter 52, preventing large amounts of external dust from entering the linear bearing between the adapter 52 and the base 1, thereby improving the reliability of the adapter 52's ability to slide smoothly relative to the base 1 over a long period of time.

[0035] The above is merely a preferred embodiment of the present invention and only specifically describes the technical principles of the present invention. These descriptions are intended only to explain the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention, as well as other specific embodiments of the present invention that can be imagined by those skilled in the art without inventive effort, shall be included within the scope of protection of the present invention.

Claims

1. A tooling fixture for air tightness testing, characterized in that: It includes a base, a positioning block, a blocking block, a pressing block and a manual driving mechanism; The positioning block, the blocking block, and the manual drive mechanism are all connected to the base. The blocking block and the pressing block are spaced apart to form a placement space for placing the object to be tested. The positioning block is used to locate the position of the object to be tested. The pressing block is used to block the air-permeable component on the object to be tested. The manual drive mechanism is connected to the pressing block and is used to drive the pressing block to move toward or away from the blocking block along the X direction. When the pressing block and the blocking block jointly clamp the object to be tested, the manual drive mechanism is in a self-locking state.

2. The tooling fixture for air tightness testing according to claim 1, characterized in that: The manual drive mechanism includes a quick clamp and an adapter; The quick clamp is connected to the base, the adapter is slidably connected to the base in the X direction, the quick clamp is connected to the adapter and is used to drive the adapter to slide relative to the base along the X direction, the pressure block is fixed to the adapter, and when the pressure block and the blocking block jointly clamp the object to be tested, the quick clamp is in a self-locking state.

3. The tooling fixture for air tightness testing according to claim 2, characterized in that: The quick clamp includes a mounting base, a handle, a connecting rod and a telescopic rod; The mounting base is fixed on the base, the middle part of the handle is rotatably connected to the mounting base, the end of the handle is rotatably connected to the first end of the connecting rod, the second end of the connecting rod is rotatably connected to the mounting base, the telescopic rod is slidably connected to the mounting base in the X direction, and the telescopic rod is connected to the adapter.

4. The tooling fixture for air tightness testing according to claim 3, characterized in that: The manual drive mechanism further includes a transmission structure, which is respectively connected to the telescopic rod and the adapter. The transmission structure enables the telescopic rod and the adapter to move in opposite directions on the straight line in the X direction.

5. The tooling fixture for air tightness testing according to claim 4, characterized in that: The transmission structure includes a first connecting rod, a second connecting rod, a third connecting rod and a sliding rod that are hinged in sequence; the middle portion of the second connecting rod is rotatably connected to the base, the end of the first connecting rod away from the second connecting rod is rotatably connected to the telescopic rod, the sliding rod is slidably connected to the base along the X direction, and the sliding rod is fixedly connected to the adapter.

6. The tooling fixture for air tightness testing according to claim 5, characterized in that: A boss is fixed on the base, and a plug hole is provided in the middle of the second connecting rod. The boss is plugged into the plug hole, so that the second connecting rod rotates relative to the base with the central axis of the boss as the rotation axis.

7. The tooling fixture for air tightness testing according to claim 4, characterized in that: The tooling fixture further includes a dust cover, which is fixed on the base and covers at least the transmission structure.

8. The tooling fixture for air tightness testing according to claim 1, wherein: The base includes a main board and at least two extension plates fixed on the main board, the positioning blocks are provided on the plurality of extension plates, the blocking block is fixed on one side of the main board, and the manual drive mechanism is connected to the top of the main board.

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