CN217735682U - Inflation connector for inflation pump and inflation pump - Google Patents

Abstract

The utility model provides an inflating joint for an air pump and an air pump. The inflating joint comprises: a gas pipe; a hollow valve core connecting piece, the valve core connecting piece is connected with the gas pipe, and the inner peripheral surface of the valve core connecting piece A part of the valve core is provided with an internal thread; and a connector housing, the valve core connector is accommodated in the connector housing. In this way, under the condition of ensuring reliable connection, the number of times of rotating the inflatable joint is reduced, the user experience is improved, and the user can conveniently and quickly connect the inflatable joint and the valve core together.

Description

Inflatable connector and air pump for air pump

technical field

The utility model relates to the technical field of air pumps, in particular to an inflatable joint for an air pump.

Background technique

The air pump is a tool for inflating various inflatable products (such as car tires, motorcycle tires, bicycle tires, balls, air mattresses, inflatable trampoline, inflatable sofas, inflatable toys, etc.). The inflation connector of some existing air pumps and the valve core of the inflatable product can be connected together by threaded connection. A problem with some inflation connectors is that the user needs to rotate the inflation connector too many times to connect the inflation connector and the valve core of the inflatable product together. In addition, during the process of rotating the inflatable joint, there may be too many turns of the internal thread, and the resistance between the internal thread and the external thread of the valve core becomes larger, so that the inflatable joint cannot be tightened and air leakage occurs in the atmospheric process.

Utility model content

Therefore, the utility model provides an inflatable joint to solve the above problems.

In order to solve the above technical problems, the utility model provides an inflatable connector for an air pump, comprising: a trachea; a hollow valve core connector, the valve core connector is connected to the trachea, and the inner circumference of the valve core connector A part of the surface is provided with an internal thread; and a connector housing, the valve core connector is accommodated in the connector housing.

Optionally, the valve core connector includes a first hole, a second hole and a third hole communicating with each other, the second hole is located between the first hole and the third hole, and the diameter of the second hole is smaller than the The diameter of the first hole and the third hole, the internal thread is formed on the inner peripheral surface of the second hole.

Optionally, the inner peripheral surface of the valve core connecting piece includes n turns of internal threads, where 2≤n≤4.

Optionally, the valve core connecting piece and the air pipe are connected together through an air pipe joint.

Optionally, the outer surface of the trachea joint is formed with a plurality of protrusions surrounding the outer surface and having a tapered surface to form a pagoda joint.

Optionally, the inflatable connector further includes a sealing ring clamped between one end of the internal thread and the trachea connector.

The utility model also provides an air pump, comprising: a shell; a core set in the shell; and an inflatable joint connected with the core, the inflatable joint includes: a trachea; a hollow valve core connector, the valve core A connecting piece is connected with the air pipe, and a part of the inner peripheral surface of the valve core connecting piece is provided with internal threads; and a connecting piece shell, the valve core connecting piece is accommodated in the connecting piece shell.

The technical solution of the utility model has the following advantages: compared with the conventional inflatable joint, the valve core connecting piece of the inflatable joint of the utility model has only 2-4 turns of internal threads, thus reducing the need for rotary inflation while ensuring reliable connection. The number of joints improves the user experience, and the user can easily and quickly connect the inflation joint and the valve core together. And because the valve core connector has only 2-4 turns of internal thread, due to the relatively small number of turns of the internal thread, during the rotation of the valve core connector relative to the valve core, the resistance between the internal thread and the external thread on the valve core gradually less, which helps to avoid the inflatable connector from being unable to be tightened due to the large resistance between the internal thread and the external thread of the valve core in the conventional inflatable joint, and then air leakage occurs during the pumping process.

Description of drawings

In order to more clearly illustrate the specific implementation of the utility model or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the specific implementation or the prior art will be briefly introduced below. Obviously, the following descriptions The accompanying drawings are some implementations of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative work.

Fig. 1 is a perspective view of the air pump provided by the embodiment of the present invention.

Fig. 2 is a perspective view of the inflation joint provided by the embodiment of the present invention.

Fig. 3 is a cross-sectional view of the inflation joint provided by the embodiment of the present invention.

Fig. 4 is a perspective view of an assembly in which the inflation joint and the valve core are connected together provided by the embodiment of the present invention.

Fig. 5 is a cross-sectional view of an assembly in which an inflatable joint and a valve core are connected together provided by an embodiment of the present invention.

Detailed ways

The technical solutions of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the utility model, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not constitute conflicts with each other.

Referring to FIG. 1 , the embodiment of the present utility model provides an air pump 100 , which includes a casing 200 and a movement 300 disposed in the casing 200 . The movement 300 may include: a hollow cylinder, a cylinder head, and a connecting rod. The cylinder head is connected to the first end of the cylinder and has an air outlet joint communicating with the inside of the cylinder. The end of the connecting rod is provided with a piston, and the piston extends into the interior of the cylinder from the second end opposite to the first end of the cylinder. When the connecting rod is pushed, the piston moves towards the first end of the cylinder, the volume of the space (cylinder compression chamber) defined between the piston and the first end of the cylinder becomes smaller, which in turn causes the air pressure in the cylinder compression chamber to increase . When the air pressure in the compression chamber of the cylinder is higher than the outside air pressure, the check valve in the cylinder head is pushed open, so that the air in the compression chamber of the cylinder flows into the cylinder head.

Please refer to FIGS. 2-5 , the air pump 100 further includes an inflation joint 400 connected to the above-mentioned air outlet joint. The inflatable joint 400 includes: an air pipe 30; a hollow valve core connector 20, which is connected to the air pipe 30, and a part of the inner peripheral surface of the valve core connector 20 is provided with an internal thread 21; the connector housing 50 , the valve core connector 20 is accommodated in the connector housing 50 .

In one embodiment, the inner peripheral surface of the valve core connecting member 20 includes n turns of internal threads 21, where 2≤n≤4, and n can be selected according to the air pressure of the air pump.

Through the above structure, the inflation joint 400 can be connected with the valve core 500 of the object to be inflated (such as a tire) through screw connection. Compared with conventional inflatable connectors, only part of the inner peripheral surface of the valve core connector 20 of the inflatable connector 400 is provided with internal threads 21 (for example, only 2-4 circles of internal threads 21), so that the user can quickly and conveniently install the inflatable connector 400 It is connected with the valve core 500, and since the valve core connecting piece 20 has only 2-4 turns of the internal thread 21, due to the relatively small number of turns of the internal thread, during the rotation of the valve core connecting piece 20 relative to the valve core 500, the internal The resistance between the thread 21 and the external thread on the valve core 500 is gradually reduced, which helps to avoid the inflatable joint from being unable to be tightened due to the large resistance between the internal thread and the external thread of the valve core in the conventional inflatable joint, and then There is an air leak during pumping.

In one embodiment, the valve core connector 20 and the air pipe 30 are connected together through an air pipe joint 10 . Through the air pipe 30 , the inflation joint 400 communicates with the air outlet joint of the movement 300 . The trachea connector 10 includes a through hole extending from one end to the opposite end.

In one embodiment, the outer peripheral surface of the trachea joint 10 is formed with a plurality of protrusions 11 surrounding the outer peripheral surface and having a tapered surface to form a pagoda joint. In this way, the trachea connector 10 can be quickly and reliably inserted into the trachea 30 .

In one embodiment, the valve core connector 20 includes a first hole 22, a second hole and a third hole 23 communicating with each other, the second hole is located between the first hole 22 and the third hole 23, and the The diameter of the second hole is smaller than the diameters of the first hole 22 and the third hole 23, and the internal thread 21 is formed on the inner peripheral surface of the second hole. The trachea joint 10 is partially accommodated in the third hole 23 . In some conventional pneumatic fittings, the internal threads of the valve core connector extend inwardly from its open end. However, in the present invention, there is no internal thread in the first hole 22 , which can play a guiding role when screwing the valve core connector 20 to the external thread on the valve core 500 .

In one embodiment, the inflation connector 400 further includes a sealing ring 40 clamped between one end of the internal thread 21 and the trachea connector 10 . After the inflatable joint 400 is connected to the valve core 500, the end of the valve core 500 is tightly against the sealing ring 40, and the sealing ring 40 is elastically deformed to seal between the valve core 500 and the trachea joint 10 to prevent Air leak.

In one embodiment, the inflatable joint 10 further includes a connector housing 50 , and the valve core connector 20 is accommodated in the connector housing 50 . In this embodiment, the valve core connector 20 and the connector housing 50 are fixed together through integral molding. The connector housing 50 can be made of plastic.

Referring to FIG. 3 , in one embodiment, the valve core connecting member 20 can rotate freely relative to the trachea joint 10 . Since the inflation joint 10 and the connector housing 50 are fixed to each other, and the air tube joint 10 and the air tube 30 are fixed to each other. When the user turns the connector housing 50 to screw the valve core connector 20 onto the valve core 500, the inflation connector 10 and the connector housing 50 rotate relative to the air tube connector 10, while the air tube connector 10 and the air tube 30 remain stationary. With this configuration, when the user rotates the connector housing 50 to screw the valve core connector 20 onto the valve core 500, the air pipe 30 will not rotate and remain stationary, which is beneficial for the valve core connector 20 to be quickly screwed onto the valve core 500. Valve core 500 on.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the protection scope of the present utility model.

Claims (10)

1. An inflatable joint for an air pump, characterized in that it comprises: trachea; a hollow valve core connector, the valve core connector is connected to the air pipe, a part of the inner peripheral surface of the valve core connector is provided with internal threads; and A connector housing, the valve core connector is accommodated in the connector housing. 2. The inflation joint for an air pump according to claim 1, characterized in that, the valve core connecting member comprises a first hole, a second hole and a third hole communicating with each other, and the second hole is located at the first hole. Between the hole and the third hole, and the diameter of the second hole is smaller than the diameters of the first hole and the third hole, the internal thread is formed on the inner peripheral surface of the second hole. 3 . The inflation joint for an air pump according to claim 1 , wherein the inner peripheral surface of the valve core connecting piece includes n turns of internal threads, where 2≤n≤4. 4. The inflation joint for an air pump according to claim 1, characterized in that, the valve core connecting piece and the air pipe are connected together through an air pipe joint. 5. The inflation joint for an air pump according to claim 4, characterized in that, the outer surface of the air pipe joint is formed with a plurality of protrusions surrounding the outer surface and having a tapered surface to form a pagoda joint. 6 . The inflation joint for an air pump according to claim 4 , further comprising a sealing ring clamped between one end of the internal thread and the air pipe joint. 7 . 7. An air pump, characterized in that it comprises: shell; the movement housed in the case; and An inflation connector connected to the movement, the inflation connector includes: trachea; a hollow valve core connector, the valve core connector is connected to the air pipe, a part of the inner peripheral surface of the valve core connector is provided with internal threads; and A connector housing, the valve core connector is accommodated in the connector housing. 8. The air pump according to claim 7, wherein the valve core connecting member comprises a first hole, a second hole and a third hole communicating with each other, the second hole is located between the first hole and the third hole Between, and the diameter of the second hole is smaller than the diameters of the first hole and the third hole, the internal thread is formed on the inner peripheral surface of the second hole. 9 . The air pump according to claim 7 , wherein the inner peripheral surface of the valve core connecting piece includes n turns of internal threads, where 2≤n≤4. 10 . The air pump according to claim 7 , wherein the valve core connecting piece and the air pipe are connected together through an air pipe joint. 11 .

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