Airtightness detection device for a tracheal joint

Abstract

The utility model discloses a kind of air-tight detection devices for gas pipe joint, can satisfy the air-tight detection under the condition of not assembling gas pipe, airway is provided by the cooperation of detection body, quick plug connector and the joint of to-be-detected gas circuit, when detecting, quick plug connector connects gas source, the other end of detection body connects to-be-detected gas valve, adopt the linkage mechanism of elastomer and baffle, when pressing baffle, utilize the contraction characteristic of elastomer, make baffle through-hole and detection body inner cavity form passway, after joint assembly, the rebound action of elastomer can be baffle is stuck in the outside of joint, improve the stability of joint connection, can realize multiple plug and unplug, facilitate later assembly, guarantee the effect of air-tight detection.

Description

Technical Field

[0001] This utility model belongs to the field of airtightness testing technology, and relates to an airtightness testing device for air pipe joints. Background Technology

[0002] Most commercial vehicles currently use air as power to control braking, gear shifting, and air suspension systems. Therefore, quick-connect fittings are typically required in the chassis design and air circuit layout. Furthermore, some locations have flow requirements, necessitating the use of air hoses with an outer diameter of only 4mm. Currently, the quick-connect fittings used with these small-diameter air hoses on the vehicle can only be inserted once and cannot be removed. However, automotive parts manufacturers typically need to reserve air hose connectors for OEMs for assembly. But parts require airtightness testing upon production, and currently, the industry lacks suitable connectors that allow for multiple insertions and removals, impacting assembly and testing efficiency. Utility Model Content

[0003] The purpose of this invention is to solve the problem in the prior art that quick-connect fittings for small-diameter air pipes on vehicles can only be inserted once and cannot be pulled out, which affects assembly and testing efficiency, and to provide an airtightness testing device for air pipe fittings.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An airtightness testing device for a tracheal connector includes a testing body, one end of which is connected to a quick-connect connector and the other end of which is connected to the air passage to be tested. An elastic body is provided at the upper end of the detection body. A baffle groove is opened on the side of the elastic body away from the quick connector. A baffle plate passes through the baffle groove. A through hole is opened on the side wall of the baffle plate. The upper end of the baffle plate is connected to the elastic body. During testing, press down on the baffle, the elastomer contracts, and the through hole on the baffle coincides with the inner cavity of the testing body. Insert the connector of the gas path to be tested into the testing body, release the baffle, and the through hole of the baffle is fitted onto the outside of the connector. The further improvement of this utility model is as follows: A limiting rod is provided at the upper end of the detection body, and an elastic body is sleeved on the outside of the limiting rod. The elastic body is connected to a baffle.

[0005] The upper end face of the baffle is connected to the upper end of the elastic body. In the initial state, there is a gap between the upper end face of the baffle and the upper end of the limiting rod.

[0006] A limiting groove is provided at the upper end of the detection body, and the limiting rod is disposed in the limiting groove.

[0007] The baffle includes a pressing part and a connecting part that are vertically connected; The pressing part is connected to the elastic body; The through hole is formed on the connecting part, and the connecting part passes through the baffle groove.

[0008] The lower end face of the pressing part is connected to the upper end of the elastic body.

[0009] A stop is provided on the baffle, and when the connecting part passes through the baffle groove, the stop is located below the baffle groove. The quick-connect connector is connected to the detection body via threads.

[0010] The elastic body is a spring.

[0011] The detection body is equipped with an iron core, and the connection end of the iron core and the gas path to be detected is located outside the detection body.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This utility model discloses an airtightness testing device for tracheal connectors, which can perform airtightness testing without assembling the tracheal tube. It provides an air passage through the cooperation of a testing body, a quick-connect connector, and the connector of the air passage to be tested. During testing, the quick-connect connector is connected to the air source, and the other end of the testing body is connected to the air valve to be tested. A linkage mechanism between an elastic body and a baffle is employed. When the baffle is pressed, the contraction characteristics of the elastic body create a passage between the baffle's through-hole and the inner cavity of the testing body. After the connector is assembled, the rebound effect of the elastic body can hold the baffle on the outside of the connector, improving the stability of the connector connection. Multiple insertions and removals are possible, facilitating subsequent assembly and ensuring the effectiveness of the airtightness test.

[0013] Furthermore, in the utility model, the outer edge of the retainer protrudes from the side wall of the connecting part. When the connecting part passes through the baffle groove, the retainer is located below the detection body, which can limit the baffle and, together with the elastomer, fix the joint more stably. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a structural diagram of the connector without installation according to this utility model; Figure 2 This is a structural diagram of the mounting connector of this utility model; Figure 3 For the present utility model Figure 1 A sectional view; Figure 4 For the present utility model Figure 2 A sectional view.

[0016] Among them: 1-Detection body; 2-Quick connector; 3-Baffle; 4-Limit rod; 5-Elastic body; 6-Block; 7-Connector; 8-Iron core. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0022] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] The present invention will now be described in further detail with reference to the accompanying drawings: See Figures 1 to 4 This utility model discloses an airtightness testing device for tracheal tube connectors, which solves the problem that airtightness testing cannot be performed on small-diameter connectors. The device can be used to test the airtightness of the connector without inserting a tracheal tube, so as to realize the function of the connected air valve.

[0024] Example 1 This embodiment discloses an airtightness detection device for a tracheal connector, including a detection body 1. One end of the detection body 1 is connected to a quick-connect connector 2, and the other end is connected to a connector 7. The detection body 1, quick-connect connector 2, and connector 7 are provided with sequentially connected air passages. An elastic body 5 is provided at the upper end of the detection body 1. A vertically penetrating baffle groove is opened on the side of the elastic body 5 near the connector 7. A baffle 3 passes through the baffle groove. A through hole is opened on the side wall of the baffle 3. The upper end of the baffle 3 is connected to the elastic body 5. When the baffle 3 is pressed down, the elastic body 5 contracts, and the through hole on the baffle 3 coincides with the inner cavity of the detection body 1. The baffle 3 is sleeved on the outside of the connector 7 through the through hole.

[0025] Furthermore, the detection body 1 has an iron core 8 inside, which extends out of the detection body 1. The detection body 1 also has a baffle groove inside for mounting a press-type baffle 3. The other end of the detection body 1 is threaded to connect with the quick-connect connector 2. The lower end face of the detection body 1 is designed with a bevel, which reduces the volume and facilitates pressing the retaining ring.

[0026] Furthermore, in this embodiment, the quick-connect connector 2 is inclined along the upper side of the detection body 1, and the connector 7 is horizontally distributed along one end of the detection body 1.

[0027] Furthermore, in this embodiment, the baffle 3 is initially in its initial position, with the through hole and the inner cavity of the detection body 1 misaligned. After applying axial pressure, the baffle 3 causes the elastic body 5 to compress and move downward, aligning the axis of the through hole with the inner cavity of the detection body to form a continuous air path. At this time, the detection body 1 and the connector 7 are assembled. After assembly, the baffle 3 is fitted over the connector 7. When pressing the baffle 3 stops, the baffle 3 will apply an axial force upward under the action of the elastic body 5, pressing the connector 7 and the detection body 1 together. The connector 7 is connected to the air valve to be tested, and the quick-connect connector 2 is connected to the air source. After the test is completed, the baffle 3 is pressed downward, the connector 7 is pulled out, and then the baffle 3 returns to its original position under the rebound force of the elastic body 5.

[0028] Furthermore, in this embodiment, the end of the quick-connect connector 2 away from the detection body 1 is provided with a spring-loaded connector, which can realize multiple insertions and removals with the trachea. The other end of the quick-connect connector 2 is connected to the detection body 1 by a thread, which facilitates disassembly and maintenance.

[0029] Example 2 This embodiment discloses an airtightness detection device for a tracheal connector, comprising a detection body 1, one end of which is connected to a quick-connect connector 2, and the other end to a connector 7. Air passages are sequentially connected inside the detection body 1, quick-connect connector 2, and connector 7. An elastic body 5 is provided at the upper end of the detection body 1. A vertically penetrating baffle groove is formed on the side of the elastic body 5 near the connector 7. A baffle 3 passes through the baffle groove, and a through hole is formed on the side wall of the baffle 3. The upper end of the baffle 3 is connected to the elastic body 5. When the baffle 3 is pressed downwards, the elastic body 5 contracts, and the through hole on the baffle 3 coincides with the inner cavity of the detection body 1. The baffle 3 is fitted onto the outside of the connector 7 through the through hole. The baffle 3 includes a vertically connected pressing part and a connecting part. The pressing part is connected to the elastic body 5. The through hole is formed on the connecting part, and the connecting part passes through the baffle groove. The lower end face of the pressing part is connected to the upper end of the elastic body 5.

[0030] Furthermore, regarding the limiting position, this embodiment also discloses another assembly method: a limiting groove is opened at the upper end of the detection body (1), and a limiting rod (4) is set in the limiting groove. An elastic body (5) is sleeved on the outer side of the limiting rod (4). The upper end of the elastic body (5) is connected to the lower end face of the pressing part. In the initial state when no pressing is performed, there is a gap between the lower end face of the pressing part and the upper end face of the limiting rod (4).

[0031] Furthermore, the limiting rod 4 can better guide the action, ensuring that the elastic body 5 will not be eccentric during the pressing process. Moreover, the reasonable height design can limit the pressing height of the baffle 3 and prevent the baffle 3 from being pressed excessively.

[0032] Furthermore, the elastic body 5 is a spring, and the spring is designed to minimize the spring force while meeting the requirements, so as to reduce the force generated during the pressing process.

[0033] Furthermore, the retaining ring is mainly fitted with the baffle 3 and fixed by spot welding to prevent the retaining ring from popping out during the return process.

[0034] Example 3 This embodiment discloses an airtightness detection device for a tracheal connector, comprising a detection body 1, one end of which is connected to a quick-connect connector 2, and the other end to a connector 7. Air passages are sequentially connected inside the detection body 1, quick-connect connector 2, and connector 7. An elastic body 5 is provided at the upper end of the detection body 1. A vertically penetrating baffle groove is formed on the side of the elastic body 5 near the connector 7. A baffle 3 passes through the baffle groove, and a through hole is formed on the side wall of the baffle 3. The upper end of the baffle 3 is connected to the elastic body 5. When the baffle 3 is pressed downwards, the elastic body 5 contracts, and the through hole on the baffle 3 coincides with the inner cavity of the detection body 1. The baffle 3 is fitted onto the outside of the connector 7 through the through hole. The baffle 3 includes a vertically connected pressing part and a connecting part. The pressing part is connected to the elastic body 5. The through hole is formed on the connecting part, and the connecting part passes through the baffle groove. The lower end face of the pressing part is connected to the upper end of the elastic body 5. A stop 6 is provided on the connecting part. The outer edge of the stop 6 protrudes from the side wall of the connecting part. When the connecting part passes through the baffle groove, the stop 6 is located below the detection body 1.

[0035] Specifically, the stop 6 is set at the lower end of the connecting part, or the stop 6 is set on the side wall of the connecting part. The lateral protrusion forms a vertical limit with the contact surface of the detection body 1 to prevent the connecting part from detaching upward under the action of air pressure or rebound force.

[0036] When the elastic body 5 is in the reset state, the upper surface of the stop 6 is in contact with the lower end face of the detection body 1 to form an axial limit, which controls the axial movement range of the connection part within the length of the slot, preventing the baffle from detaching from the detection body due to repeated expansion and contraction of the elastic body. Furthermore, a double constraint is formed between the detection body 1 and the baffle 3, which retains the elastic reset function and adds mechanical limit protection.

[0037] Furthermore, in this embodiment, the specific structure and setting position of the stop 6 are not limited, as long as the stop 6 can satisfy the limiting of the baffle 3.

[0038] The detection device disclosed in this embodiment operates on the following principle when performing airtightness testing: The trachea is fitted with quick-connect fitting 2, and the other end of quick-connect fitting 2 is threadedly connected to the detection body 1. When the baffle 3 is pressed down, the elastic body 5 is compressed synchronously. When the baffle 3 is pressed down, the through hole on the baffle 3 coincides with the inner diameter of the detection body 1, and the iron core can be inserted into the connector 7 normally. After the inner end face of the detection body 1 contacts the end face of the connector 7, stop pressing the baffle 3. The baffle 3 returns to its original position under the action of the elastic body 5. At this time, the baffle 3 is just stuck in the groove on the outer wall of the connector 7, thus achieving fixation with the connector 7. After installation, air can be vented for an airtightness test. After the test is completed, press baffle 3 again to remove the airtightness testing device. The entire airtightness test is now complete.

[0039] This embodiment can adapt to various spaces; the airtightness detection device adopts a press-type design, which is convenient for workers to operate and can be reused repeatedly; the iron core design at the joint mating position can effectively achieve a seal between the joint and the connector.

[0040] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An airtightness testing device for a tracheal connector, characterized in that, Includes a detection body (1), one end of which is connected to a quick-connect connector (2), and the other end is connected to the gas path to be detected; The upper end of the detection body (1) is provided with an elastic body (5). A baffle groove is opened on the side of the elastic body (5) away from the quick connector (2). A baffle (3) passes through the baffle groove. A through hole is opened on the side wall of the baffle (3). The upper end of the baffle (3) is connected to the elastic body (5). During testing, press down on the baffle (3), the elastic body (5) contracts, the through hole on the baffle (3) coincides with the inner cavity of the testing body (1), insert the connector of the gas path to be tested into the testing body (1), release the baffle (3), and the through hole of the baffle (3) is fitted on the outside of the connector (7).

2. The airtightness testing device for a tracheal connector according to claim 1, characterized in that, The detection body (1) is provided with a limiting rod (4) at the upper end, and an elastic body (5) is sleeved on the outside of the limiting rod (4). The elastic body (5) is connected to the baffle (3).

3. The airtightness testing device for a tracheal connector according to claim 2, characterized in that, The upper end face of the baffle (3) is connected to the upper end of the elastic body (5). In the initial state, there is a gap between the upper end face of the baffle (3) and the upper end of the limiting rod (4).

4. The airtightness testing device for a tracheal connector according to claim 3, characterized in that, The detection body (1) has a limiting groove at its upper end, and the limiting rod (4) is set in the limiting groove.

5. The airtightness testing device for a tracheal connector according to claim 1, characterized in that, The baffle (3) includes a pressing part and a connecting part that are vertically connected; The pressing part is connected to the elastic body (5); The through hole is formed on the connecting part, and the connecting part passes through the baffle groove.

6. The airtightness testing device for a tracheal connector according to claim 5, characterized in that, The lower end face of the pressing part is connected to the upper end of the elastic body (5).

7. The airtightness testing device for a tracheal connector according to claim 1, characterized in that, A stop (6) is provided on the baffle (3). When the connecting part passes through the baffle groove, the stop (6) is located below the baffle groove.

8. The airtightness testing device for a tracheal connector according to claim 1, characterized in that, The quick-connect connector (2) is connected to the detection body (1) by threads.

9. The airtightness testing device for a tracheal connector according to claim 1, characterized in that, The elastic body (5) is a spring.

10. The airtightness testing device for a tracheal connector according to claim 1, characterized in that, The detection body (1) is equipped with an iron core (8), and the connection end of the iron core (8) and the gas path to be detected is located outside the detection body (1).

Images