CN104006247A - Handle screwing type American valve joint - Google Patents

Abstract

A rotary handle type American nozzle joint, including a joint body and a joint upper cover, the bottom of the joint body is provided with a bottom hole of the joint body matched with the valve body on the tire, and the inner cavity of the joint body is From bottom to top, there are elastic ring, movable body and adjusting bolt in sequence. The bottom pressure plate of the adjusting bolt exerts force evenly on the end surface of the elastic ring through the movable body. The diameter of the inner hole on the elastic ring is equal to or larger than that of the valve. The outer diameter of the nozzle body is provided with a gap for accommodating the outlet pipe of the inflating device on the outer wall of the joint tube and the movable body, and a central concave hole communicating with the gap is provided on the lower end surface of the movable body. The central concave hole is provided with a central depressing tongue for pushing away the valve core rod in the valve body. The joint is easy to operate and easy to grasp, even one hand can complete the operation, and in the process of removing the joint, even if the joint is slowly removed, there will be no obvious leakage of tire gas.

Description

A rotary handle type beautiful mouth joint

technical field

The invention relates to a joint of an inflating device, in particular to a rotary handle type beautiful mouth joint.

Background technique

In the tires of automobiles, bicycles, mountain bikes, etc., the application of American valves accounts for the vast majority. There are two common inflation joints for American valves: one is the helmet type. The disadvantage of this method is that when the tire is inflated and rotated in the opposite direction to pick up the conversion cap, there will be more air leakage, which is extremely unsatisfactory. The second is the handle-type joint, which is quick to remove and has less air leakage. However, when installing the joint, it is necessary to fix the joint body with one hand to keep the relative direction of the pipe body and the valve in the same direction. When taking the conversion head, do the opposite operation with both hands. Due to the large resistance in the process of moving the handle, if you do not use force or do not use enough force to fix the joint body first, and directly lift the handle with one hand, the mouth body may be damaged or even broken. In the repair shop, this kind of damage to the valve caused by the lifting handle is not uncommon. Obviously, such an operation is cumbersome and laborious, and the valve is not safe enough, and it is completely impossible to install or remove such a joint with one hand.

Contents of the invention

In order to solve the above-mentioned technical problems, the present invention provides a rotary handle type beautiful mouth joint, which is connected and dismantled by a rotary handle, easy to operate, easy to grasp, and even one hand can complete the operation, and in the process of removing the joint, even if it is slowly removed Even if the joints are removed, there will be no obvious leakage of tire gas.

The technical solution adopted in the present invention is: a rotary handle type beautiful nozzle joint, including a joint body and a joint upper cover connected to the upper end of the joint body, and the bottom of the joint body is provided with a valve body that matches the tire body. The bottom hole of the joint pipe body, in the inner cavity of the joint pipe body, a cylindrical elastic ring, a cylindrical movable body and an adjusting bolt are arranged in sequence from bottom to top, and the upper end of the adjusting bolt passes through the thread of the joint upper cover After the hole is connected with the bolt turning handle, the displacement of the adjusting bolt is driven by the turning handle of the bolt, and the pressure plate at the bottom of the adjusting bolt applies force evenly to the end surface of the elastic ring through the movable body, and the diameter of the inner hole on the elastic ring is the same Equal to or greater than the outer diameter of the valve body, the outer wall of the joint tube and the movable body are provided with gaps for accommodating the outlet pipe of the inflating device, and the lower end of the movable body is provided with a center connected to the gap. The concave hole is provided with a central depressing tongue for pushing away the valve core rod in the valve body in the central concave hole.

To further optimize this solution, balls are provided between the bottom pressure plate of the adjusting bolt and the top surface of the movable body.

To further optimize this solution, the adjusting bolt is provided with a bolt limiting slot, and a limiting snap ring is sleeved in the bolt limiting slot.

To further optimize this solution, the bolt turning handle is provided with a fixed square hole, and the adjusting bolt is provided with a square boss matching the fixed square hole.

To further optimize this solution, the joint body is provided with an upper cover installation positioning groove, and the joint upper cover is clamped on the port of the joint body through the upper cover installation positioning groove.

To further optimize this solution, the inner diameter of the elastic ring is the same as the diameter of the bottom hole of the joint body, and the outer diameter of the elastic ring is equal to the inner diameter of the joint body.

To further optimize this solution, the elastic ring is made of a material with a large amount of compression deformation.

The beneficial effects of the present invention are:

First, the present invention converts the action of embracing, tightening or loosening the mouth body of the mouth, opening or relaxing the core of the mouth into a method of tightening and pressing down or loosening and lifting the bolt, mainly using the screw torque lever type The principle keeps the force applied evenly and easily during the whole operation process, and the main advantage is: in the process of removing the joint, even if the handle is slowly rotated, there will be no obvious leakage of tire gas. Because, before the rubber ring swells and loosens, although the tire valve is not completely closed, the tire compressed air is sealed in the pumping pipeline, and this pipeline is a one-way air guide. Until the rubber ring is loosened and encircled, at this time, in the action of unscrewing the thread, the joint body will be naturally and quickly pushed up by the valve core and lifted up by natural upward rotation, and there will be no trouble when the helmet is removed. Air leakage while rotating.

Second, due to the tightening/loosening of the joint, only a slight pressure/lifting force and easy rotation force consistent with the direction of the mouth body are required, thus eliminating the possibility of breaking or even breaking the valve, and not causing other problems. damage.

Third, the easy rotation force and slight pressure or lifting force consistent with the direction of the mouth body are natural operations that can be completed with one hand, which not only frees the other hand, but also speeds up the operation.

Description of drawings

Fig. 1 is a schematic diagram of the exploded structure of each component of the present invention.

Reference signs: 1. Bottom hole of joint pipe body, 2. Joint pipe body, 3. Elastic ring, 4. Center tongue, 5. Center concave hole, 6. Top surface of movable body, 7. Bottom pressure plate, 8. Bolt Limiting card slot, 9. Joint upper cover, 10. Center screw hole of upper cover, 11. Bolt limit snap ring, 12. Bolt turning handle, 13. Fixed square hole, 14. Air pump outlet pipe, 15. Air intake Route, 16, loam cake installation positioning groove, 17, breach, 18, valve body, 19, valve core rod.

Detailed ways

    The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. This embodiment is based on the technical solution of the present invention, and provides detailed implementation methods and specific operating procedures, but the scope of protection of the present invention is not limited to the following embodiments. .

As shown in the figure, a rotary handle type American mouth joint is characterized in that it includes a joint body 2 and a joint upper cover 9 connected to the upper end of the joint body, and the bottom of the joint body 1 is provided with a valve body on the tire. 18 matched joint pipe body bottom hole 1, in the inner cavity of the joint pipe body 2, a cylindrical elastic ring 3, a cylindrical movable body and an adjustment bolt are arranged in sequence from bottom to top, and the upper end of the adjustment bolt After passing through the threaded hole of the joint upper cover 9 and connecting with the bolt turning handle 12, the bolt turning handle 12 is used to drive and adjust the displacement of the bolt. On the end face, the diameter of the inner hole on the elastic ring 3 is equal to or slightly larger than the outer diameter of the valve body 18, and the outer wall of the joint pipe body 2 and the movable body are provided with gaps for accommodating the outlet pipe of the inflating device. The lower end surface of the movable body is provided with a central concave hole 5 communicating with the gap on it. In the central concave hole 5, there is a central depressing tongue 4 for pushing back the valve core rod in the valve body. The central depressing tongue 4 is connected with the movable body. The body is fixedly connected, therefore, the end of the valve body 18 can pass through the bottom hole 1 of the joint body and the inner hole on the elastic ring 3 successively, and its air flow passage communicates with the central concave hole 5 on the movable body.

The bolt turning handle 12 described herein is provided with a fixed square hole 13, and the adjusting bolt is provided with a square boss matching the fixed square hole 13.

The elastic ring 3 described herein can be made of a material with a large amount of compression deformation, such as a common rubber ring.

As shown in the exploded view, the joint installation process is as follows:

1. Put the elastic ring 3 into the bottom of the joint pipe body 2. The inner diameter of the elastic ring 3 is the same as the diameter of the bottom hole 1 of the joint pipe body, which is slightly equal to or slightly larger than the outer diameter of the valve body 18; the outer diameter of the elastic ring 3 is the same as that of the joint body. The inner diameters of the pipe bodies 2 are equal.

2. Insert the outlet pipe 14 of the inflating device according to the gap 17 of the joint body and the gap of the corresponding movable body, and place the central concave hole 5 of the movable body on the top surface of the elastic ring 3 . The outer diameter of the movable body is slightly smaller than the inner diameter of the joint pipe body 2, the diameter of the central concave hole 5 of the movable body is smaller than the outer diameter of the valve body 18, and the diameter of the central depressing tongue 4 of the movable body is greater than the diameter of the valve core rod 19.

3. Screw the adjustment bolt through the upper cover center screw hole 10 of the joint upper cover 9, set the limit snap ring 11 in the bolt limit slot 8 on the adjustment bolt, and use the fixed square hole 13 on the bolt turning handle 12 For fixing the upper end of the adjusting bolt, the limit snap ring 11 can prevent the bolt from entering too much and causing damage.

4. Referring to the upper cover installation positioning groove 16, fasten the joint upper cover 9 on the upper port of the joint body 2, and the installation is completed.

Further improvement: in order to reduce the contact friction between the bottom pressure plate 7 of the bolt and the top surface 6 of the movable body, and at the same time ensure that the top surface 6 of the movable body is evenly pressed, a ball can be provided on the bottom surface of the pressure plate 7 or a ball can be provided on the top surface 6 of the movable body. There are some balls and the like.

Taking the way that the valve body 18 is vertical to the ground as shown in the figure as an example, the connection method between the joint pipe body 2 and the valve body 18 is as follows:

1. Set the bottom hole 1 of the assembled joint body on the valve body 18, the top of the valve body will pass through the elastic ring 3, and the valve core rod 19 will be pushed against the bottom surface of the center tongue 4 of the movable body. Make a little downward effort, and the valve core rod 19 is pushed away until the nozzle body is pushed against the annular bottom surface of the movable body. At this time, it is possible to hear the sound of the residual air in the tire leaking slightly, and start to rotate the bolt to turn the handle 12 .

2. Turn the bolt handle 12, adjust the bolt to go down, and the bottom pressure plate 7 will continue to press the top surface 6 of the movable body to move downward or make the joint pipe body 2 go up, and the top of the annular bottom of the pipe body and the annular bottom surface of the movable body will continue The elastic ring 3 is squeezed and deformed until the elastic ring 3 and the valve body 18 are encircled tightly and sealed. At this time, the sound of residual air leakage disappears, and you can start pumping. Compressed air enters the vehicle tire through the air valve according to the intake route 15 in the figure.

To remove the connector from the valve:

Stop pumping. Quickly rotate the bolt to turn the handle 12, adjust the bolt to go back up, continuously relieve the pressure on the top surface 6 of the movable body, and the elastic ring 3 will continue to return to its original shape, and continue to loosen and tighten the valve body 18; at the same time, the valve core rod 19 will also Continue to bounce, the tire valve is gradually closed. Until the elastic ring 3 fully releases the expansion and tightness surrounding the valve body 18, in the action of rotating and unwinding, the joint pipe body 2 is naturally taken off, and the tire valve is completely closed immediately.

In the fully relaxed state, in order to avoid the pipe body from rotating when the handle is rotated, the other hand should slightly stabilize the joint pipe body, or when operating with one hand, you can slightly hold the pipe body with your middle finger and index finger or hold the air inlet pipe, and use your thumb to and index finger to turn the handle.

It is worth mentioning that even if the handle is slowly rotated during the joint removal process, there will be no obvious leakage of tire gas. Because, before the rubber ring swells and loosens, although the tire valve is not completely closed, the tire compressed air is sealed in the pumping pipeline, and this pipeline is a one-way air guide. Until the rubber ring is loosened and encircled, at this time, in the action of unscrewing the thread, the joint body will be naturally and quickly pushed up by the valve core and lifted up by natural upward rotation, and there will be no trouble when the helmet is removed. Air leakage while rotating.

In the process of installing or removing the joint, the present invention needs to apply the bolt to rotate the handle 12. Since the process resistance is mainly the extruding elastic ring stress and converted into a rotating moment lever, the force is even and easier than that of the handle. Generally speaking, the rubber ring can be squeezed by 1--1.5mm to tighten the mouth body, so it is almost enough to turn the handle around one turn, which will make the operator feel comfortable and not cumbersome.

In practice, when the valve core rod 19 moves downward for a distance of 1 mm, the valve can be felt to be obviously opened. Valve core rod 19 generally has 4mm stroke, so, the center depressing tongue 4 of movable body should protrude certain distance from the bottom surface of movable body, generally choose 2mm and can satisfy use.

This device is mainly a joint designed for the American mouth, and the American mouth is well known to those skilled in the art. The American mouth described in this article is the abbreviation of the American valve (Schrader valve). Valve), often referred to simply as the American mouth, is an inflation device widely used in the tires of all powered vehicles today. After opening the valve cover, the Schrader will expose a copper tube with external threads, and inside is an air passage called the core cavity, which is called the valve body. The core cavity in the middle of the body locks an air core, and there is a core rod supported by a coil spring inside, which can be inflated or deflated by pressing the core rod; and the air core can be taken out by rotating with a special tool.

Claims (7)

1. the U.S. mouth joint of rotary handle type, it is characterized in that: comprise the joint upper cover that joint body is connected with joint body upper end, the bottom of joint body is provided with the joint body bottom outlet matching with the Valve tip body on tire, in the inner chamber of described joint body, be provided with successively from bottom to up cylindrical elastic ring, cylindrical movable body and adjustment bolt, the upper end of adjusting bolt is through after the tapped hole of joint upper cover and be connected with bolt handle with sleeve, drive and adjust bolt change in displacement by bolt handle with sleeve, the bottom platen of adjusting bolt is evenly applied to active force on the end face of elastic ring by movable body, on described elastic ring, diameter of bore is equal to or is greater than the external diameter of Valve tip body, on described joint tube wall He in movable body, be equipped with the breach that holds pump steam outlet pipe, be provided with the center shrinkage pool being connected with the breach on it in the lower end surface of movable body, in the shrinkage pool of center, be provided with for the center of valve cock core bar in unseat the valve mouth body and press tongue.

2. the U.S. mouth joint of a kind of rotary handle type according to claim 1, is characterized in that: between the bottom platen of described adjustment bolt and movable body's end face, be provided with ball.

3. the U.S. mouth joint of a kind of rotary handle type according to claim 1 and 2, is characterized in that: described adjustment bolt is provided with the spacing draw-in groove of bolt, is provided with limited location snap ring in the spacing draw-in groove inner sleeve of bolt.

4. the U.S. mouth joint of a kind of rotary handle type according to claim 3, is characterized in that: described bolt handle with sleeve is provided with fixing square hole, on adjustment bolt, is provided with the square boss matching with fixing square hole.

5. the U.S. mouth joint of a kind of rotary handle type according to claim 3, is characterized in that: described joint body is provided with upper cover locating slot is installed, and joint upper cover is installed on the port that locating slot is clamped on joint body by upper cover.

6. according to the U.S. mouth joint of a kind of rotary handle type described in claim 4 or 5, it is characterized in that: the internal orifice dimension of described elastic ring is identical with the diameter of joint body bottom outlet, the external diameter of elastic ring equates with joint internal diameter of tube body.

7. the U.S. mouth joint of a kind of rotary handle type according to claim 6, is characterized in that: described elastic ring adopts the larger material of compress variation to make.