CN205716167U - Quick connector - Google Patents

Abstract

The utility model discloses a quick connector, which comprises claws; a cylinder body, the first end of which is provided with a general air intake hole, and the second end is equipped with claws; a piston is arranged in the cylinder body and can drive the claws Move along the axial direction of the cylinder; the first gas channel, the pressure gas in it is used to drive the piston to move towards the second end of the cylinder; the second gas channel, the pressure gas in it is used to drive the piston to move towards the second end of the cylinder One end moves and fills the part to be tested with pressurized gas after the jaw is connected with the part to be tested; and a valve part is used to make the total air inlet between communicating with the first gas passage and communicating with the second gas passage switch. The quick connector of the utility model makes the total air intake hole communicate with the first gas channel and the second gas channel through the valve, so that the pressure gas in the same inflatable tube connected with the total air intake hole can be used to realize Drive the jaws (drive the jaws to connect the parts to be tested) and inflate the parts to be tested.

Description

quick connector

technical field

The utility model relates to a quick connector used to inflate parts to be tested to check the airtightness of the parts to be tested.

Background technique

Usually, in order to inflate the cavity of the part to be tested to check its airtightness, the worker needs to connect a connector to the outlet end of the inflatable tube (the inlet end of the inflatable tube is connected to the air pump), which can be sealed and connected to the part to be tested. The inflatable joint of the test part, the connector and the inflatable joint are usually threaded (the inflatable joint is called an external thread connection, at this time the connector is an external thread connector, and the inflatable joint is an internal thread, which is called an internal thread connection. Connectors become internal thread connectors), traditional threaded connectors are connected to the inflatable joint by screwing, the process of connecting the threaded connector to the inflatable joint is time-consuming and laborious, and the sealing components are easily damaged by screwing. In order to make the connector realize quick threaded connection with the inflatable joint, as shown in FIG. The mandrel 400; the claw 600 is surrounded by a plurality of clamping petals, and is arranged at one end of the cylinder body 200, and the claw 600 at least partially extends into the cylinder body 200, and the handle 100 is arranged at the other end of the cylinder body 200, and the core The shaft 600 and the driving part 300 are arranged in the cylinder body 200, and the driving part 300 is driven by the handle 100, and the claw 600 moves in the axial direction of the cylinder body 200 under the drive of the driving part 300 (if the connector is an internally threaded connector The inner hole of the claw 600 is threaded, the handle 100 first drives the claw 600 to increase the extension so that it can be inserted into the inner hole of the inflatable joint, and then the handle 100 drives the claw 600 to reduce the extension and the mandrel 400 forces the clip The claw 600 is expanded and tightened; if the connector is an externally threaded connector, the outer periphery of the claw 600 is threaded, and the handle 100 first drives the claw 600 to increase the extension so that it can cover the outer periphery of the inflatable joint, and then the handle 100 drives the claw 600 reduce the amount of extension so that the cylinder 200 forces the claw 600 to tightly wrap the charging connector), so that the claw 600 is threadedly connected with the charging connector of the part to be tested, and then leads to the gas passage of the part to be tested through the self-inflating hole Inflate air into the part under test.

Although the above-mentioned threaded connector can realize quick connection with the inflatable joint, the threaded connection process of the claw and the inflatable joint, that is, the axial movement of the claw is driven by the mechanical force of the handle, which will inevitably consume the physical strength of the user , and in order to meet the stability of the threaded connection, the mechanical force of the driving claw needs to be set to be very large, which may result in the user being unable to pull the handle.

Utility model content

Aiming at the above-mentioned technical problems existing in the connectors in the prior art, the utility model provides a quick connector capable of connecting with the parts to be tested and inflating the parts to be tested pneumatically.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:

A quick connector, including claws, also includes: a cylinder body, the first end of which is provided with a general air intake hole, and the second end is equipped with the claws; a piston is arranged in the cylinder body and can drive The claw moves along the axial direction of the cylinder; the first gas passage, the pressure gas in it is used to drive the piston to move toward the second end of the cylinder; the second gas passage, the pressure in it The gas is used to drive the piston to move toward the first end of the cylinder, and to fill the part under test with pressurized gas after the claw is connected with the part under test; and the valve part is used to make the part under test The total air inlet is switched between communicating with the first gas passage and communicating with the second gas passage.

Preferably, the valve element is a sleeve sleeved on the cylinder body, the sleeve body and the cylinder body enclose a closed space, and the cylinder body is provided with a and the first air guide hole in the space, the sleeve has a first position and a second position relative to the axial or circumferential direction of the cylinder, and the outer circumference of the cylinder is formed with the first gas a first air intake hole communicated with the channel and a second air intake hole communicated with the second gas passage; and when the sleeve is in the first position, the first air intake hole communicates with the space And the second air inlet is disconnected from the space, when the sleeve is in the second position, the second air inlet is connected to the space and the first air inlet is connected to the space. The space is disconnected.

Preferably, the space is an annular space enclosed by the sleeve and the cylinder at both ends, and the first position and the second position are the axis of the sleeve on the cylinder. two upward positions, and the first air inlet and the second air inlet are spaced apart in the axial direction of the cylinder so that when the sleeve moves to the first position, the The first air inlet communicates with the annular space, and when the casing moves to the second position, the second air inlet communicates with the annular space.

Preferably, the axial distance between the first air inlet hole and the second air inlet hole is greater than the axial length of the annular space.

Preferably, the piston at least divides the cylinder into a first air chamber near the first end and a second air chamber near the second end, and the first gas passage is formed near the cylinder. The solid inside of the first end of the first end, and the first gas passage communicates with the first air chamber so that when the sleeve is in the first position, pressurized gas enters the first air chamber to push the piston toward The second end of the cylinder moves.

Preferably, the claw is at least partly located in the second air chamber, the inner hole of the claw communicates with the second air chamber through the gap between the clamping petals of the claw, and the second The gas channel communicates with the inner hole of the jaw so that when the sleeve is in the second position, the pressure gas enters the inner hole of the jaw to fill the part to be tested with pressure gas and the second air cavity. to push the piston to move toward the first end.

Preferably, the piston has a first piston and a second piston fixedly connected, the first air chamber is located between the first piston and the first end of the cylinder, and the second air chamber is located between the first end of the cylinder. between the second piston and the second end of the cylinder.

Preferably, a partition is provided between the first piston and the second piston, and the first piston is formed with a sleeve penetrating through the partition toward the second end, and the second piston is It is sleeved on the shaft sleeve in a fixed manner, and the claw is arranged at the end of the shaft sleeve.

Preferably, it also includes a mandrel with one end fixed to the cylinder, and the other end passing through the first piston and the bushing in sequence and extending into the inner hole of the claw, the mandrel and the An annular gap communicating with the inner hole of the claw is formed between the sleeves, and the first piston is provided with a second air guide hole communicating with the annular gap and the second air inlet respectively, and the second gas The channel at least includes the annular gap and the second air guide hole.

Preferably, an air guide cavity is formed between the first piston and the partition plate, the second air inlet hole communicates with the air guide cavity, and the second air guide hole communicates with the air guide cavity.

Compared with the prior art, the beneficial effect of the quick connector of the utility model is: the quick connector of the utility model makes the total air inlet between the first gas passage and the second gas passage through the valve member. Switching, thereby using the pressure gas in the same inflation pipe connected with the general air inlet to drive the jaws (the driving jaws are connected to the parts to be measured) and to inflate the parts to be measured.

Description of drawings

Fig. 1 is a schematic structural view of a quick connector in the prior art;

Fig. 2 is a schematic structural view of the quick connector of the present invention in an installed state;

Fig. 3 is a schematic structural view of the quick connector of the present invention in an inflated state.

In the picture:

10-Cylinder block; 11-General air intake hole; 12-First air guide hole; 13-First air intake hole; 14-Second air intake hole; 15-First gas channel; 20-Claw; 31-The first A piston; 311-the second air guide hole; 32-the second piston; 33-shaft sleeve; 40-mandrel; 50-sleeve body; 60-annular space; One air chamber; 92-the second air chamber; 101-the part to be tested; 102-the partition.

detailed description

In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Fig. 2 and Fig. 3, the preferred embodiment of the present utility model provides a kind of quick connector, and this quick connector comprises claw 20, cylinder body 10, piston, first gas passage 15, second gas passage and valve parts. The cylinder body 10 can be an integrally formed structure, or can be a combined structure of multi-stage connections. The claw 20 is arranged at the second end of the cylinder body 10, and is the same as the setting method and working method of the claw in the prior art. The first end of the body 10 is axially provided with a total air intake hole 11 (of course, the total air intake hole 11 can be opened in multiple directions); the piston is arranged inside the cylinder body 10 and is directly or indirectly connected with the claw 20 to Drive the claw 20 to move along the axial direction of the cylinder body 10; the first gas passage 15 can be formed by a pipeline outside the cylinder body 10 or formed inside the cylinder body 10, and the first gas passage 15 is provided by the total air intake hole 11 The pressure gas is used to drive the piston to move towards the second end of the cylinder body 10, so that the piston drives the protruding amount of the claw 20 at the second end of the cylinder body 10 to increase so as to be connected with the part 101 to be tested; the second gas channel can also be formed by The pipeline located outside the cylinder 10 is formed or formed inside the cylinder 10, and the pressure gas provided by the total air intake hole 11 in the second gas passage is used to drive the piston to move toward the first end of the cylinder 10, so that the piston Drive the protruding amount of the claw 20 at the second end of the cylinder body 10 to reduce, thereby making the connection between the claw 20 and the part 101 to be tested more reliable and to achieve sealing, and the second gas passage is also used to supply air to the airtight connection with the claw 20. The part to be tested 101 is filled with pressure gas; the valve element is used to switch the total air inlet 11 between communicating with the first gas passage 15 and communicating with the second gas passage, that is, the valve element can make the total air inlet 11 communicate with the second gas passage. When one gas passage 15 is connected, the total air inlet 11 is disconnected from the second gas passage, and when the total air inlet 11 is connected to the second gas passage, the total air inlet 11 is disconnected from the first gas passage 15 .

From the above, it can be seen that the quick connector of the present utility model is different from the quick connector in the prior art in that: the change of the protruding amount of the claw 20 of the quick connector in the prior art is done manually through the handle operation , and the change of the protruding amount of the claw 20 of the quick connector of the present utility model is jointly completed by the pressure gas in the first gas passage 15 and the second gas passage and the valve member controlling the flow direction of the pressure gas. The quick connector of the utility model can reduce the labor intensity of operators.

The structure of the valve that can realize the above-mentioned function can have multiple, such as, if the first gas channel 15 and the second gas channel are pipelines arranged outside the cylinder body 10, the valve can be a two-way switch valve connecting the pipeline , as shown in Figure 2 and Figure 3, in a preferred embodiment of the present invention, the valve member is a sleeve body 50 sleeved on the cylinder body 10, and the sleeve body 50 and the cylinder body 10 form a closed space, The cylinder body 10 is provided with a first air guide hole 12 communicating with the total air intake hole 11 and the space. The sleeve body 50 has a first position and a second position relative to the axial or circumferential direction of the cylinder body 10. The cylinder body 10 has a first position and a second position. A first air inlet 13 communicating with the first gas passage 15 and a second air inlet 14 communicating with the second air passage are formed on the outer periphery; and when the cover body 50 is in the first position, the first air inlet 13 The second air inlet 14 communicates with the space while the second air inlet 14 is disconnected from the space. When the sleeve body 50 is in the second position, the second air inlet 14 communicates with the space while the first air inlet 13 is disconnected from the space.

It can be known from the above that the sleeve 50 as a valve element can rotate or move axially to change the on-off state of the first gas channel 15 and the second gas channel. If the valve member can realize its function by rotating, the first air inlet 13 and the second air inlet 14 need to be located on the same section of the cylinder body 10, and there is a certain distance (or radian) in the circumferential direction, so that the sleeve body 50 and the cylinder The airtight space enclosed by the body 10 cannot penetrate along the circumference of the cylinder body 10, that is, it cannot be an annular space.

In a preferred embodiment of the present utility model, the valve member realizes its function by moving axially, and the airtight space surrounded by the sleeve body 50 and the cylinder body 10 is closed by the two ends surrounded by the sleeve body 50 and the cylinder body 10. The annular space 60, the first position and the second position are two positions of the sleeve body 50 in the axial direction of the cylinder body 10, and the first air intake hole 13 and the second air intake hole 14 are in the axial direction of the cylinder body 10 The gaps are arranged so that when the sleeve 50 moves to the first position, the first air inlet 13 communicates with the annular space 60 , and when the sleeve 50 moves to the second position, the second air inlet 14 communicates with the annular space 60 .

In order to prevent the situation that the first air inlet 13 and the second air inlet 14 communicate with the annular space 60 at the same time during the entire movement of the sleeve body 50, the gap between the first air inlet 13 and the second air inlet 14 is The axial distance between them is greater than the length of the annular space 60 in the axial direction. In this way, the annular space 60 can only communicate with one of the first air inlet 13 and the second air inlet 14 during the entire axial movement of the sleeve body 50 .

In a preferred embodiment of the present utility model, the first gas channel 15 is formed inside the cylinder 10, specifically, the piston at least divides the cylinder 10 into a first air cavity 91 near the first end and a first air chamber 91 near the second end. The second air cavity 92, the first gas passage 15 is formed in the solid interior near the first end of the cylinder block 10, one end thereof communicates with the first air inlet 13, and its second end communicates with the first air cavity 91, so, When the sleeve body 50 is in the first position, the pressure gas enters the annular space 60 through the first air guide hole 12, and then enters the first gas channel 15 through the first air inlet hole 13 and enters the first air chamber 91. An air chamber 91 pushes the piston to move toward the second end of the cylinder 10 .

In a preferred embodiment of the present utility model, the second gas channel is formed inside the cylinder body 10, and the claw 20 is at least partially located in the second air cavity 92, and the inner hole of the claw 20 passes through the clamp of the claw 20. The gap between the holding petals communicates with the second air cavity 92 , and the second air channel communicates with the inner hole of the claw 20 . In this way, when the sleeve body 50 is in the second position, the pressurized gas enters through the first air guide hole 12, enters the annular space 60, and then enters the second gas channel through the second air inlet hole 14 and passes between the clamping petals of the jaws 20. The gap between them enters the second air chamber 92 , and the pressurized gas pushes the piston to move toward the first end of the cylinder 10 in the second air chamber 92 , and fills the part 101 to be tested through the inner hole of the claw 20 .

As a further preference, the piston has a first piston 31 and a second piston 32 fixedly connected, the first air cavity 91 is located between the first piston 31 and the first end of the cylinder 10, and the second air cavity 92 is located between the second piston 32 and the second end of the cylinder 10. A partition 102 is arranged between the first piston 31 and the second piston 32, and the first piston 31 is formed with a shaft sleeve 33 passing through the partition 102 and extending into the second air cavity 92 toward the second end, and the second piston 32 is The fixed way is sleeved on the shaft sleeve 33, the inner hole of the tail of the claw 20 is provided with an annular slot, and an annular protrusion is formed on the outer periphery of the end of the shaft sleeve 33, and the annular protrusion is clamped in the annular slot. To realize the connection between the claw 20 and the shaft sleeve 33 .

As a further preference, the second gas passage is formed as follows: one end of a mandrel 40 is threadedly connected to the cylinder body 10, and the other end is sequentially passed through the first piston 31 and the shaft sleeve 33 and extends into the inner hole of the claw 20, The diameter of the mandrel 40 is smaller than the diameter of the inner hole of the shaft sleeve 33 so that an annular gap 70 communicating with the inner hole of the claw 20 is formed between the shaft sleeve 33 and the mandrel 40, and a second piston 31 is radially opened to the solid body of the first piston 31. Two air guide holes 311, one end of the second air guide hole 311 leads to the annular gap 70, an air guide chamber 80 is formed between the first piston 31 and the dividing plate 102, the other end of the second air guide hole 311 leads to the air guide chamber 80, the second air guide hole 311 leads to the air guide chamber 80, The second air inlet 14 leads to the air guiding cavity 80 , and further communicates with the second air guiding hole 311 through the air guiding cavity 80 . It can be seen from this that the second gas passage is formed by the air guide chamber 80, the second air guide hole 311 and the annular gap 70, and the quick connector of the present invention utilizes the passage on the entity and the gap between the entities to form the second gas passage, It can be formed in a variety of ways and allows the gas to flow smoothly.

It can be seen from the formation of the first gas passage 15 and the second gas passage and the function of the valve parts that the quick connector of the present invention is ingenious in design and easy to use.

The above embodiments are only exemplary embodiments of the utility model, and are not used to limit the utility model, and the protection scope of the utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the utility model within the spirit and protection scope of the utility model, and such modifications or equivalent replacements should also be deemed to fall within the protection scope of the utility model.

Claims (10)

1. A quick connector, comprising claws, is characterized in that it also includes: A cylinder body, the first end of which is provided with a general air intake hole, and the second end is equipped with the claw; a piston, which is arranged in the cylinder and can drive the claw to move along the axial direction of the cylinder; a first gas passage in which gas under pressure is used to drive the piston toward the second end of the cylinder; The second gas channel, the pressure gas in which is used to drive the piston to move towards the first end of the cylinder, and fill the pressure gas into the part to be measured after the claw is connected with the part to be tested; as well as The valve element is used to switch the total air inlet between communicating with the first gas passage and communicating with the second gas passage. 2. The quick connector according to claim 1, wherein the valve member is a sleeve sleeved on the cylinder body, and the sleeve body and the cylinder body form a closed space, The cylinder body is provided with a first air guide hole that communicates with the general air intake hole and the space, and the sleeve has a first position and a second position relative to the axial or circumferential direction of the cylinder body. A first air inlet connected to the first gas passage and a second air inlet connected to the second gas passage are formed on the outer circumference of the cylinder; and when the sleeve is in the first position When the first air inlet is in communication with the space and the second air inlet is disconnected from the space, when the sleeve is in the second position, the second air inlet is in communication with the space The space communicates with the space and the first air inlet is disconnected from the space. 3. The quick connector according to claim 2, wherein the space is an annular space enclosed by the sleeve and the cylinder, the first position and the second The second position refers to the two positions of the sleeve in the axial direction of the cylinder, and the first air inlet and the second air inlet are arranged at intervals in the axial direction of the cylinder so that when When the sleeve moves to the first position, the first air inlet communicates with the annular space; when the sleeve moves to the second position, the second air inlet communicates with the annular space. The annular space is connected. 4. The quick connector according to claim 3, wherein the axial distance between the first air inlet hole and the second air inlet hole is greater than the axial length of the annular space. 5. The quick connector according to claim 3, wherein the piston at least divides the cylinder into a first air chamber near the first end and a second air chamber near the second end , the first gas channel is formed inside the solid near the first end of the cylinder, and the first gas channel communicates with the first air cavity so that when the sleeve is in the first position, Pressurized gas entering the first chamber pushes the piston toward the second end of the cylinder. 6. The quick connector according to claim 5, wherein the jaws are at least partly located in the second air chamber, and the inner holes of the jaws pass through the gap between the clamping petals of the jaws It communicates with the second air cavity, and the second gas channel communicates with the inner hole of the claw so that when the sleeve is in the second position, the pressurized gas enters the inner hole of the claw to The measuring part is filled with pressurized gas and the second air cavity to push the piston to move toward the first end. 7. The quick connector according to claim 6, wherein the piston has a fixedly connected first piston and a second piston, and the first air chamber is located between the first piston and the cylinder body Between the first end, the second air chamber is located between the second piston and the second end of the cylinder. 8. The quick connector according to claim 7, wherein a partition is provided between the first piston and the second piston, and the first piston is formed with a penetrating hole towards the second end. The shaft sleeve of the separator, the second piston is sleeved on the shaft sleeve in a fixed manner, and the claw is arranged at the end of the shaft sleeve. 9. The quick connector according to claim 8, further comprising one end fixed to the cylinder body, the other end passing through the first piston and the bushing in turn and extending into the claw. The mandrel in the inner hole, an annular gap communicating with the inner hole of the claw is formed between the mandrel and the sleeve, and the first piston is provided with the annular gap and the second inlet respectively. A second air guide hole in which the air holes are connected, and the second gas channel at least includes the annular gap and the second air guide hole. 10. The quick connector according to claim 9, characterized in that, an air guide chamber is formed between the first piston and the partition, and the second air intake hole communicates with the air guide chamber, The second air guide hole and the air guide chamber.