Early-warning nut sealing cap display ejector pin

Abstract

The utility model discloses an early-warning nut sealing cap display ejector pin, and aims to provide an early-warning nut sealing cap display ejector pin which guarantees operation, facilitates observation and improves detection efficiency and accuracy. The sealing cap comprises a sealing cap shell, a needle seat, an ejector pin body and a plurality of sealing pieces, an inner cavity of the sealing cap shell is sequentially provided with a threaded cavity, a movable cavity and a display cavity from one side to the other side, the needle seat and the sealing pieces are arranged in the movable cavity, the two sides of the needle seat are in sealed connection with the movable cavity through the sealing pieces, one side of the needle seat is provided with an air inlet cavity, and the other side of the needle seat is connected with the ejector pin body. The ejector pin body is movably connected with the display cavity through the pin base, and a numerical value scale ring is embedded in the display cavity. The beneficial effects of the utility model are that normal operation of the early-warning nut sealing cap display ejector pin is guaranteed; the air tightness of the structure is improved; the thimble display result is quantitatively displayed, and the detection accuracy and efficiency are improved; the structural connection stability and strength are provided; and normal operation and accurate display of the display ejector pin are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, in particular to an early warning nut sealing cap display ejector. Background Art

[0002] The air conditioner evaporator is made of a group of U-shaped tubes passing through fins, which are expanded and welded. During its production process, it needs to be leak-tightened and filled with protective gas. Therefore, a sealing cap is configured at the outlet of the air conditioner evaporator. The traditional sealing cap consists of an internal sealing ring and an external cap. After the sealing test and filling of protective gas are completed, it will remain at the outlet until the air conditioner is installed on site to prevent the inner wall of the copper tube from oxidizing due to the entry of air, thereby protecting the evaporator.

[0003] China Patent Authorization Announcement Number: CN 220981626 U, Authorization Announcement Date: May 17, 2024. This utility model relates to a warning nut capping structure, comprising a capping shell, the capping shell being provided with a threaded cavity and a warning cavity, the threaded cavity being in communication with the warning cavity, the threaded cavity being connected to an air conditioning pipe joint, a warning telescopic pad being matched and installed in the warning cavity, a sealing gasket being provided between the air conditioning pipe joint and the warning telescopic pad, the sealing gasket and the warning telescopic pad forming a stepped sealing structure, the outer end of the middle portion of the warning telescopic pad being connected to a display pin that can extend outside the warning cavity. The shortcomings of this technical solution are: 1. The sealing gasket is used to provide one-way auxiliary sealing for the warning telescopic pad, and the insufficient sealing affects the operation of the display pin and thus the detection results; 2. The detection process of the display pin is such that the overall movement amplitude is less than the movement, resulting in the observation of the movement of the end of the display pin by the naked eye alone, which is prone to misinterpretation or requires repeated verification, affecting the detection efficiency and detection accuracy.

[0004] In summary: the warning nut capping indicates that there are deficiencies in the ejector pin operation, such as the inability to ensure airtightness and difficulty in observation, which affect the detection efficiency and accuracy. Utility Model Content

[0005] The utility model aims to overcome the shortcomings of the prior art in that the operation of the early warning nut cap display pin cannot ensure air tightness and is difficult to observe, which affects the detection efficiency and accuracy. The utility model provides an early warning nut cap display pin that ensures operation, facilitates observation, and improves detection efficiency and accuracy.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A warning nut cap display ejector comprises a cap shell, a needle seat, an ejector body and several seals. The inner cavity of the cap shell is sequentially arranged as a threaded cavity, a movable cavity and a display cavity from one side to the other. The needle seat and the seal are placed in the movable cavity. Both sides of the needle seat are sealed and connected to the movable cavity through the seals. One side of the needle seat is provided with an air inlet cavity, and the other side of the needle seat is connected to the ejector body. The ejector body is movably connected to the display cavity through the needle seat, and the display cavity is embedded with a numerical scale ring.

[0008] The sealing cap shell and the numerical scale ring are made of transparent material, and the needle seat is made of rubber material. The inner cavity of the sealing cap shell is divided into a threaded cavity, a movable cavity and a display cavity from one side to the other. The threaded cavity is used to connect the pipeline, the movable cavity is used to install the needle seat of the display ejector, and the display cavity is used to place the ejector body of the display ejector. The needle seat is connected to the movable cavity through a seal, and the threaded cavity and the display cavity are isolated by the seal to prevent gas leakage into the display cavity, thereby allowing the gas to enter the air inlet cavity on the needle seat to ensure air tightness and the normal operation of the ejector body. Both ends of the needle seat are installed The seals achieve multi-level sealing and enhance airtightness. The needle seat is made of rubber material and expands to the other side due to the gas, thereby pushing the ejector body connected to the other end of the needle seat to move within the display cavity. The transparent cap shell allows for intuitive observation of the movement of the ejector body, thereby achieving leak detection and protective gas filling. The display cavity is embedded with a numerical scale ring with numerical scales. The movement of the ejector body and the numerical scales coordinate to more intuitively display and observe the degree of change, preventing omission or misreading of the displayed results. This ensures the normal operation of the warning nut cap display ejector, improves the airtightness of the structure, quantifies the display results of the ejector, and improves the accuracy and efficiency of detection.

[0009] Preferably, the wall of the active cavity is provided with a stop step 1, with the outer side of the needle seat engaging with the stop step 1. The protruding stop step 1 structure of the active cavity wall allows the base of the needle seat (near the end of the threaded cavity) to engage with a point on the stop step, preventing the needle seat from being moved by gas, thereby providing structural connection stability.

[0010] Preferably, the air inlet cavity wall is provided with a second stop step. The sealing element includes a gasket that engages with the second stop step and is provided with a vent hole that communicates with the threaded cavity and the air inlet cavity. The second stop step is a protruding structure at the air inlet cavity port of the needle holder, allowing the gasket in the sealing element to fit within the second stop step and press against the needle holder and the active cavity wall. This enhances the airtight seal, ensures the normal operation of the display ejector, and ensures accurate display.

[0011] Preferably, the needle holder is provided with a retaining groove, which is annular and located on one side of the ejector body. The sealing element includes a sealing ring, whose outer diameter is larger than the outer wall diameter of the retaining groove, and the sealing ring engages with the retaining groove. The retaining groove is an annular depression. Because the outer diameter of the sealing ring is larger than the outer wall diameter of the retaining groove, the sealing ring engages with the retaining groove, pressing the needle holder against the wall of the active cavity and further preventing air leakage. This further improves the structural connection strength, enhances airtightness, and ensures the normal operation of the ejector and accurate display.

[0012] Preferably, the needle holder is connected to a boss, which is provided with a connecting slot. One end of the ejector body is plugged into the connecting slot. The boss is sleeved with a retaining ring, whose inner diameter is smaller than the outer diameter of the boss. The center of the end face of the needle holder is connected to the columnar boss. The end face of the boss is provided with a recessed connecting slot, so that the ejector body is fixed to the boss via the connecting slot. At the same time, the inner diameter of the retaining ring is smaller than the outer diameter of the boss, so that the retaining ring is sleeved on the boss to tighten the boss and the ejector body. This improves the structural connection strength and ensures the normal operation of the display ejector.

[0013] Preferably, an auxiliary display ring is provided at the other end of the ejector body. The auxiliary display ring is sleeved onto the ejector body and movably connected to the numerical scale ring via a needle base. The auxiliary display ring is connected to the end of the ejector body and is pushed to slide on the numerical scale ring by the expansion of the needle base, achieving a more precise and clear display effect.

[0014] The beneficial effects of the utility model are: ensuring the normal operation of the warning nut cap display ejector; improving the air tightness of the structure; quantifying the display results of the ejector and improving the detection accuracy and efficiency; providing structural connection stability and strength; and ensuring the normal operation and display accuracy of the ejector. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 yes Figure 1 Exploded diagram;

[0017] Figure 3 yes Figure 1 sectional view of .

[0018] In the figure: 1. Cap shell, 2. Needle seat, 3. Ejector body, 4. Threaded cavity, 5. Movable cavity, 6. Display cavity, 7. Air inlet cavity, 8. Numerical scale ring, 9. Limit step 1, 10. Limit step 2, 11. Sealing gasket, 12. Vent hole, 13. Limit groove, 14. Sealing ring, 15. Boss, 16. Connecting slot, 17. Fixing ring, 18. Auxiliary display ring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0020] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0021] Unless otherwise specified, the relative arrangement of components, numerical expressions, and values ​​described in these embodiments do not limit the scope of this application. For ease of description, spatially relative terms such as "upper," "lower," "left," and "right" are used in the embodiments to illustrate the relationship of one element or feature shown in the figures to another. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device during use or operation. For example, if the device in the figure is inverted, an element described as being "below" another element or feature would be positioned "above" the other element or feature. Therefore, the exemplary term "below" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to scale. Technologies, processes, and equipment known to those skilled in the relevant art may not be discussed in detail, but, where appropriate, should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.It should be noted that like reference numerals and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0022] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0023] Example 1:

[0024] like Figure 1-3 As shown, a warning nut cap display ejector comprises a cap shell 1, a needle seat 2, an ejector body 3 and several seals. The inner cavity of the cap shell 1 is sequentially arranged as a threaded cavity 4, a movable cavity 5 and a display cavity 6 from one side to the other. The needle seat 2 and the seal are placed in the movable cavity 5. Both sides of the needle seat 2 are sealed and connected to the movable cavity 5 through the seals. An air inlet cavity 7 is provided on one side of the needle seat 2, and the other side of the needle seat 2 is connected to the ejector body 3. The ejector body 3 is movably connected to the display cavity 6 through the needle seat 2, and the display cavity 6 is embedded with a numerical scale ring 8.

[0025] like Figure 2 、 3 As shown, the wall of the active cavity 5 is provided with a limiting step 19, and the outer side surface of the needle seat 2 is engaged with the limiting step 19. The wall of the air inlet cavity 7 is provided with a limiting step 2 10. The sealing member includes a sealing gasket 11, which is engaged with the limiting step 2 10. The sealing gasket 11 is provided with a vent hole 12, which communicates with the threaded cavity 4 and the air inlet cavity 7.

[0026] like Figure 2 、 3 As shown, the needle seat 2 is provided with a limiting groove 13, which is ring-shaped and is placed on one side of the ejector body 3. The sealing member includes a sealing ring 14, the outer diameter of which is larger than the outer groove wall diameter of the limiting groove 13, and the sealing ring 14 is embedded in the limiting groove 13.

[0027] like Figure 3 As shown, the needle base 2 is connected to a boss 15, which is provided with a connecting slot 16. One end of the ejector body 3 is plugged into the connecting slot 16. The boss 15 is sleeved with a fixing ring 17, and the inner diameter of the fixing ring 17 is smaller than the outer diameter of the boss 15. The other end of the ejector body 3 is provided with an auxiliary display ring 18, which is sleeved with the ejector body 3 and is movably connected to the numerical scale ring 8 through the needle base 2.

[0028] like Figure 1-3 As shown, the boss 15 and the needle seat 2 are an integrated structure to improve the integrity of the structure.

[0029] The surface of the auxiliary display ring 18 is printed with horizontal lines to indicate numerical scales.

[0030] During use: the air outlet pipe of the air conditioning pipe of the evaporator is spirally connected and installed with the cap shell 1. During detection, if there is no leakage in the pipe, the gas enters the air inlet cavity 7 in the needle seat 2. The gas pushes the boss 15, the ejector body 3 and the auxiliary display ring 18 on the other side through the force expansion of the needle seat 2. By observing the auxiliary display ring 18 in the display cavity 6, it can be seen that the displacement occurs relative to the numerical scale ring 8. Otherwise, it indicates a leakage.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A warning nut cap display ejector, characterized in that: The invention comprises a cap shell (1), a needle seat (2), an ejector pin (3) and a plurality of sealing members, wherein the inner cavity of the cap shell (1) is sequentially configured as a threaded cavity (4), a movable cavity (5) and a display cavity (6) from one side to the other, the needle seat (2) and the sealing member are placed in the movable cavity (5), both sides of the needle seat (2) are sealedly connected to the movable cavity (5) through the sealing member, one side of the needle seat (2) is provided with an air inlet cavity (7), the other side of the needle seat (2) is connected to the ejector pin (3), the ejector pin (3) is movably connected to the display cavity (6) through the needle seat (2), the display cavity (6) is embedded with a numerical scale ring (8), the cap shell (1) and the numerical scale ring (8) are both made of transparent material, and the needle seat (2) is made of rubber material.

2. The warning nut cap display ejector according to claim 1 is characterized in that: The cavity wall of the movable cavity (5) is provided with a limiting step (9), and the outer side surface of the needle seat (2) is embedded in the limiting step (9).

3. The warning nut cap display ejector according to claim 2, characterized in that: The cavity wall of the air inlet cavity (7) is provided with a second limiting step (10), and the sealing member includes a sealing gasket (11), the sealing gasket (11) is embedded with the second limiting step (10), and the sealing gasket (11) is provided with a vent hole (12), and the vent hole (12) is connected with the threaded cavity (4) and the air inlet cavity (7).

4. The warning nut cap display ejector according to claim 1 or 3, characterized in that: The needle seat (2) is provided with a limiting groove (13), the limiting groove (13) is ring-shaped and is placed on one side of the ejector body (3), the sealing member includes a sealing ring (14), the outer diameter of the sealing ring (14) is larger than the outer groove wall diameter of the limiting groove (13), and the sealing ring (14) is embedded in the limiting groove (13).

5. The warning nut cap display ejector according to claim 1, characterized in that: The needle seat (2) is connected to a boss (15), and the boss (15) is provided with a connecting slot (16). One end of the ejector pin (3) is plugged into the connecting slot (16). The boss (15) is sleeved with a fixing ring (17), and the inner diameter of the fixing ring (17) is smaller than the outer diameter of the boss (15).

6. The warning nut cap display ejector according to claim 5, characterized in that: The other end of the ejector pin body (3) is provided with an auxiliary display ring (18), the auxiliary display ring (18) is sleeved with the ejector pin body (3), and the auxiliary display ring (18) is movably connected to the numerical scale ring (8) through the needle seat (2).

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