Manual wheel side valve

Abstract

The invention discloses a manual wheel-side valve, and belongs to the technical field of wheel-side valves, an air passage is arranged in a wheel-side valve body, one end of the air passage is communicated with an external air source air inlet nozzle, the other end of the air passage is communicated with an inflating valve, an air inlet hole is formed in one end of the external air source air inlet nozzle, and a diaphragm is extruded at the other end of the external air source air inlet nozzle in a contact manner; according to the manual wheel side valve, through the arrangement of the polygonal manual switch, the switch valve element, the first sealing ring and the second sealing ring, opening and closing of the switch can be manually controlled, the sealing performance of the connecting position is guaranteed, compared with an existing switch, the service life is prolonged, the structure is simple, and through the linear groove formed in the manual switch, the manual wheel side valve is convenient to use. The opening and closing positions of the switch can be determined, the control diversity of the manual switch is increased, the stability of the rotation position of the manual switch is controlled through the elastic force of the sealing ring, and the practicability of the manual switch is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wheel-side valves, and more specifically, to a manual wheel-side valve. Background Art

[0002] The wheel side valves used in the wheel side system of the tire central inflation and deflation system usually have two structures, piston structure and diaphragm structure. However, during use, the commonly used wheel side valves are easily caused to rotate automatically due to external forces such as touch or vibration because their manual switches are controlled by knobs. In addition, the knobs may be separated from the switch valve stem due to long-term use, thereby causing the switch to fail, reducing its practicality.

[0003] For example, publication number CN107701771A discloses a positive-pressure wheel-side valve, which assembly includes a valve nozzle air pipe, an external air source connector, a wheel-side valve and a wheel-side valve bracket, and the wheel-side valve includes an upper valve cover, a valve body and a lower valve cover.

[0004] It can be seen from the above-mentioned public scheme that one end of the manual switch is connected to the switch valve stem through a set knob, which not only increases the difficulty of assembly, but also the knob and the switch valve stem may become loose and detached due to wear. At the same time, the knob may automatically rotate due to external force, reducing its practicality. Summary of the invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a manual wheel-side valve, which, through the provision of a polygonal manual switch and a switch valve core, a first sealing ring and a second sealing ring, can not only manually control the opening and closing of the switch, but also ensure the sealing of the connection, thereby increasing the service life compared with the existing switch and having a simple structure. In addition, the straight groove provided through the manual switch can not only determine the opening and closing positions of the switch, but also increase the control diversity of the manual switch. At the same time, the stability of the rotation position is controlled by the elastic force of the sealing ring, thereby improving its practicability.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A manual wheel-side valve comprises a wheel-side valve body, an air passage is arranged inside the wheel-side valve body, one end of the air passage is connected to an external air source air inlet nozzle, the other end of the air passage is connected to a valve nozzle, one end of the external air source air inlet nozzle is provided with an air inlet hole, the other end of the external air source air inlet nozzle is in contact with and squeezed with a diaphragm, one side of the diaphragm is in contact with and squeezed with a spring, a rotatable manual switch is arranged on the surface of the wheel-side valve body, a limiting boss is arranged at one end of the manual switch, one end of the limiting boss is fixedly connected to a connecting column, and the other end of the connecting column is provided with an opening The closing valve core is provided with a through hole on the surface of the switch valve core. The manual wheel-side valve can not only manually control the opening and closing of the switch through the polygonal manual switch and the switch valve core, the first sealing ring and the second sealing ring, but also ensure the sealing of the connection. Compared with the existing switch, the service life is increased and the structure is simple. The straight groove provided by the manual switch can not only determine the opening and closing position of the switch, but also increase the control diversity of the manual switch. At the same time, the stability of the rotation position is controlled by the elastic force of the sealing ring, thereby improving its practicability.

[0008] Furthermore, a first clamping groove is provided on the surface of the limiting boss, and a first sealing ring is clamped on the inner wall of the first clamping groove. The surface of the first sealing ring is in contact and extrusion with the inner wall of the wheel-side valve body. The first sealing ring is made of elastic wear-resistant rubber. The first sealing ring can seal the connection of the limiting boss. At the same time, the first sealing ring is in a state of compressed elastic force, and the rotation position of the limiting boss can be fixed by the elastic force.

[0009] Furthermore, two second sealing rings are provided on the surface of the connecting column, and the surfaces of the two second sealing rings are in contact and extrusion with the inner wall of the wheel-side valve body. The material of the second sealing ring is the same as that of the first sealing ring. The second sealing ring can seal the connection of the connecting column. At the same time, the second sealing ring is in a state of compressed elastic force, and the rotation position of the connecting column can be fixed by the elastic force.

[0010] Furthermore, the cross-sectional shape of the manual switch is a polygon, a slotted groove is provided at one end of the manual switch, the axis of the slotted groove is in the same plane as the center of the manual switch, and the slotted groove and the polygonal manual switch can be manually rotated and controlled by a wrench or a slotted screwdriver.

[0011] Furthermore, the cross-sectional shapes of the second sealing ring and the first sealing ring are both rectangular or circular, and the diameter of the first sealing ring is greater than the diameter of the second sealing ring.

[0012] Furthermore, a valve cavity rotatably connected to the switch valve core is provided inside the wheel-side valve body, and the interior of the valve cavity is connected to one end of the airway, and the airway can be closed and connected by the switch valve core.

[0013] Furthermore, the length direction of the straight groove is consistent with the length direction of the through hole, and the switch position of the airway can be determined by observing the rotation position of the straight groove.

[0014] Compared with the prior art, the advantages of the present invention are: This solution not only can manually control the opening and closing of the switch by providing a polygonal manual switch, a switch valve core, a first sealing ring and a second sealing ring, but also ensures the sealing of the connection. Compared with the existing switch, the service life is increased and the structure is simple.

[0015] The present invention not only can determine the open and closed positions of the switch through the slotted groove provided on the manual switch, but also increases the control diversity of the manual switch. At the same time, the stability of the rotation position is controlled by the elastic force of the sealing ring, thereby improving its practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 The overall structure rear view; Figure 3 for Figure 1 A top view of the overall structure; Figure 4 for Figure 3 The overall structural side view; Figure 5 for Figure 4 Schematic diagram of the manual switch structure.

[0017] Description of the numbers in the figure: 1 wheel side valve body, 11 air channel, 12 diaphragm, 13 spring, 2 valve nozzle, 3 external air source air inlet nozzle, 31 air inlet hole, 4 manual switch, 41 straight groove, 42 limit boss, 43 first clamping groove, 44 connecting column, 45 second clamping groove, 46 switch valve core, 47 through hole, 5 first sealing ring, 6 second sealing ring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0019] See also Figure 1-5A manual wheel-side valve comprises a wheel-side valve body 1. The wheel-side valve body 1 belongs to the prior art. Its composition structure and working principle are well known to those skilled in the art and will not be described in detail herein. An airway 11 is arranged inside the wheel-side valve body 1. A valve cavity rotatably connected to a switch valve core 46 is arranged inside the wheel-side valve body 1. The interior of the valve cavity is connected to one end of the airway 11. The airway 11 can be closed and connected by the switch valve core 46. One end of the airway 11 is connected to an external air source inlet nozzle 3, and the other end of the airway 11 is connected to a valve nozzle 2. An air inlet hole 31 is arranged at one end of the external air source inlet nozzle 3, and the other end of the external air source inlet nozzle 3 contacts a film for extrusion The diaphragm 12 is provided with a spring 13 on one side thereof, a rotatable manual switch 4 is provided on the surface of the wheel-side valve body 1, a limiting boss 42 is provided on one end of the manual switch 4, a connecting column 44 is fixedly connected to one end of the limiting boss 42, a switch valve core 46 is provided on the other end of the connecting column 44, the connecting column 44 is driven to rotate by the manual switch 4, the manual switch 4 is rotated by clamping the side with a wrench or inserting a flat-blade screwdriver into a flat-blade groove 41, the length direction of the flat-blade groove 41 is consistent with the length direction of the through hole 47, the switch position of the airway 11 can be determined by observing the rotation position of the flat-blade groove 41, and a through hole 47 is provided on the surface of the switch valve core 46.

[0020] A first clamping groove 43 is provided on the surface of the limiting boss 42, and a first sealing ring 5 is clamped on the inner wall of the first clamping groove 43. The surface of the first sealing ring 5 is in contact and extruded with the inner wall of the wheel-side valve body 1. The first sealing ring 5 is made of elastic and wear-resistant rubber. The first sealing ring 5 can seal the connection of the limiting boss 42. At the same time, the first sealing ring 5 is in a state of compressed elastic force, and the rotation position of the limiting boss 42 can be fixed by the elastic force. Two second sealing rings 6 are provided on the surface of the connecting column 44, and the surfaces of the two second sealing rings 6 are in contact and extruded with the inner wall of the wheel-side valve body 1. The material of the second sealing ring 6 is the same as that of the first sealing ring 5. The second sealing ring 6 can seal the connection of the connecting column 44. At the same time, the second sealing ring 6 is in a state of compressed elastic force, and the rotation position of the connecting column 44 can be fixed by the elastic force.

[0021] The cross-sectional shape of the manual switch 4 is a polygon, and a slotted groove 41 is provided at one end of the manual switch 4. The axis of the slotted groove 41 is in the same plane as the center of the manual switch 4. The slotted groove 41 and the polygonal manual switch 4 can be manually rotated and controlled by a wrench or a slotted screwdriver. The cross-sectional shapes of the second sealing ring 6 and the first sealing ring 5 are both rectangular or circular, and the diameter of the first sealing ring 5 is larger than the diameter of the second sealing ring 6.

[0022] When the manual wheel-side valve is in use, the manual switch 4 can be controlled to rotate by a tool such as a wrench or a flat-blade screwdriver. The rotation of the manual switch 4 drives the connecting column 44 to rotate. The rotation of the connecting column 44 drives the switch valve core 46 to rotate. The switch valve core 46 rotates so that the through hole 47 rotates and connects with the airway 11. After the switch is completed, the compression elastic force released by the first sealing ring 5 and the second sealing ring 6 automatically fixes the open position of the manual switch 4, and then the inflation operation can be performed. Through the set polygonal manual switch 4 and the switch valve core 46, the first sealing ring 5 and the second sealing ring 6, not only the opening and closing of the switch can be manually controlled, but also the sealing of the connection is guaranteed. Compared with the existing switch, the service life is increased and the structure is simple. In addition, through the flat-blade groove 41 set on the manual switch 4, not only the opening and closing positions of the switch can be determined, but also the control diversity of the manual switch 4 is increased. At the same time, the stability of its rotation position is controlled by the elastic force of the sealing ring, thereby improving its practicality.

[0023] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A manual wheel-side valve, comprising a wheel-side valve body (1), wherein an air passage (11) is arranged inside the wheel-side valve body (1), one end of the air passage (11) is connected to an external air source inlet nozzle (3), and the other end of the air passage (11) is connected to a valve nozzle (2), Features: An air inlet hole (31) is provided at one end of the external air source air inlet nozzle (3), a diaphragm (12) is contacted and extruded at the other end of the external air source air inlet nozzle (3), and a spring (13) is contacted and extruded at one side of the diaphragm (12). A rotatable manual switch (4) is provided on the surface of the wheel-side valve body (1), a limiting boss (42) is provided at one end of the manual switch (4), a connecting column (44) is fixedly connected to one end of the limiting boss (42), a switch valve core (46) is provided at the other end of the connecting column (44), and a through hole (47) is provided on the surface of the switch valve core (46).

2. A manual wheel-side valve according to claim 1, Features: The surface of the limiting boss (42) is provided with a first clamping groove (43), the inner wall of the first clamping groove (43) is clamped with a first sealing ring (5), the surface of the first sealing ring (5) is in contact and extrusion with the inner wall of the wheel-side valve body (1), and the first sealing ring (5) is made of elastic wear-resistant rubber.

3. A manual wheel-side valve according to claim 2, Features: Two second sealing rings (6) are provided on the surface of the connecting column (44), and the surfaces of the two second sealing rings (6) are in contact and extrusion with the inner wall of the wheel-side valve body (1), and the material of the second sealing ring (6) is the same as that of the first sealing ring (5).

4. A manual wheel-side valve according to claim 1, Features: The cross-sectional shape of the manual switch (4) is a polygon; one end of the manual switch (4) is provided with a straight groove (41); the axis of the straight groove (41) and the center of the manual switch (4) are located in the same plane.

5. A manual wheel-side valve according to claim 3, Features: The cross-sectional shapes of the second sealing ring (6) and the first sealing ring (5) are both rectangular or circular, and the diameter of the first sealing ring (5) is greater than the diameter of the second sealing ring (6).

6. A manual wheel-side valve according to claim 1, Features: The wheel-side valve body (1) is provided with a valve cavity rotatably connected to the switch valve core (46), and the interior of the valve cavity is connected to one end of the air passage (11).

7. A manual wheel-side valve according to claim 4, Features: The length direction of the straight groove (41) is consistent with the length direction of the through hole (47).

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