CN217502594U

CN217502594U - Lighter gas charging valve

Info

Publication number: CN217502594U
Application number: CN202221328114.5U
Authority: CN
Inventors: 孙云凯
Original assignee: Cixi Haituo Hardware Co ltd
Current assignee: Cixi Haituo Hardware Co ltd
Priority date: 2022-05-27
Filing date: 2022-05-27
Publication date: 2022-09-27
Anticipated expiration: 2032-05-27

Abstract

The utility model provides a lighter inflation valve: comprises a valve seat, a valve core, a spring and a valve rod; an air inlet channel penetrating through the upper end surface and the lower end surface of the valve rod is arranged in the valve rod, and the lower end of the valve rod is in threaded connection with the top of the valve seat; the outer peripheral wall of the valve rod is provided with a cutting groove which extends along the height direction of the valve rod and penetrates through the lower end surface of the valve rod, and the cutting groove and the inner wall of the cavity of the valve seat form an air leakage channel in a surrounding manner; the valve rod is sleeved with a sleeve, the lower end of the sleeve is connected with the valve seat, and the top of the valve rod is arranged on the outer side of the sleeve; a gap communicated with the air leakage channel is arranged between the sleeve and the valve rod; one end of the spring is propped against the bottom of the valve rod, and the other end of the spring is propped against the top of the valve core; in an initial state, the valve core closes the air inlet channel and the air outlet channel; when the charging connector is inserted into the lower end of the cavity and pushed upwards, the valve core overcomes the elasticity of the spring to move upwards, and the air inlet channel and the air outlet channel are opened; when the charging connector withdraws from the lower end of the cavity, the valve core resets under the action of the elastic force of the spring, and the air inlet channel and the air discharging channel are closed.

Description

Lighter gas charging valve

Technical Field

The utility model relates to a lighter accessory technical field, what specifically say is a lighter inflation valve.

Background

The existing lighter is usually provided with an inflation valve at the bottom of an air box, can be repeatedly inflated for use, and is more environment-friendly due to material saving. The common air charging and air admission valve generally comprises a valve seat, a valve core, a sealing ring and a spring, wherein an annular convex shoulder is arranged on the valve core, a blind hole is arranged in the valve core along the axial direction, the sealing ring is sleeved at the lower end of the convex shoulder, and a radial hole communicated with the blind hole is arranged on the peripheral wall of the valve core close to the sealing ring to form an air admission channel for butane to enter an air box; one end of the spring is sleeved on one end of the valve core far away from the opening of the blind hole, and the other end of the spring is connected with the valve seat. When the valve core is pushed into the air box by the inflating nozzle, the radial hole is positioned above the sealing ring and communicated with the air box, and the air inlet channel is opened; and after the inflation is finished, the inflation nozzle is withdrawn, the valve core is reset under the elastic force of the spring, the radial hole is reset to the sealing ring, the sealing is formed under the clamping of the annular shoulder and the bottom of the valve seat, and the air inlet channel is closed.

At present, most of common lighter shells on the market are made of metal materials and are also made of some plastic materials, but beautiful patterns are usually printed on the shells, so that a user is difficult to determine the quantity of fuel gas in a gas box when the gas box is inflated. Most of the fuel gas in the lighter is compressed into liquid butane, and if the filled butane is too full, danger is easily caused; if the filled butane is insufficient, the butane in the lighter can be used up more quickly, and the user needs to fill the gas more frequently; however, butane is toxic and causes symptoms such as dizziness, a user may overflow a small amount of butane when inflating, and frequent inflation is not only troublesome, but also harmful to the health of the user.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: overcomes the defects of the prior art and provides a lighter gas charging valve capable of controlling the gas charging quantity.

The technical solution of the utility model is to provide a lighter inflation valve with following structure: comprises a valve seat, a valve core, a spring and a valve rod; the valve seat is internally provided with a cavity penetrating through the upper end surface and the lower end surface of the valve seat, and the valve core is arranged in the cavity; the valve rod is internally provided with an air inlet channel penetrating through the upper end surface and the lower end surface of the valve rod, and the lower end of the valve rod is in threaded connection with an opening at the top of the cavity; the outer peripheral wall of the valve rod is provided with at least one cutting groove which extends along the height direction of the valve rod and penetrates through the lower end face of the valve rod, and the cutting groove and the inner wall of the cavity are enclosed to form an air leakage channel; the valve rod is sleeved with a sleeve, the lower end of the sleeve is connected with the valve seat, and the top of the valve rod is arranged on the outer side of the sleeve; a gap is formed between the sleeve and the valve rod and communicated with the air leakage channel; one end of the spring is abutted against the bottom of the valve rod, and the other end of the spring is abutted against the top of the valve core; in an initial state, the valve core closes the air inlet channel and the air outlet channel; when the valve nozzle of the inflation bottle is inserted into the lower end of the cavity and pushed upwards, the valve core overcomes the elastic force of the spring to move upwards, and the air inlet channel and the air release channel are opened; when the valve nozzle of the inflation bottle is withdrawn from the lower end of the cavity, the valve core is reset under the action of the elastic force of the spring, and the air inlet channel and the air release channel are closed.

After the structure above the adoption, the utility model relates to a lighter inflation valve compares with prior art, has following advantage:

when a valve nozzle of the inflation bottle is inserted into the lower end of the valve seat cavity and pushed upwards, the valve core overcomes the elastic force of the spring to move upwards and opens the air inlet channel and the air release channel, and liquid butane in the inflation bottle enters along the air inlet channel and is inflated into the air box from an opening at the top end of the air inlet channel; when the liquid level of liquid butane in the air box exceeds the top end of the sleeve, the liquid butane in the air box can flow into a gap between the sleeve and the valve rod and is discharged through the air leakage channel, and at the moment, a user can judge that the amount of the liquid butane in the air box is at a preset numerical value and timely withdraws the valve nozzle of the inflation bottle. The device is simple to use, can regulate and control the volume of filling liquid butane in the gas tank, and convenience of customers judges whether to finish filling gas.

Preferably, the inner wall of the cavity is provided with an annular flange, the annular flange divides the cavity into an upper cavity and a lower cavity, the upper cavity and the lower cavity are communicated through a central through hole of the annular flange, and the air release channel is communicated with the upper cavity; a blind hole which extends along the axis direction of the valve core and penetrates through the bottom of the valve core is arranged in the valve core, an annular groove is arranged on the outer peripheral wall of the valve core, and a radial through hole communicated with the blind hole is arranged on the inner bottom wall of the annular groove; the annular groove is sleeved with a sealing ring, and the outer diameter of the sealing ring is larger than the inner diameter of the lower end opening of the air inlet channel and the central through hole of the annular flange; the valve core is connected in the upper cavity in a sliding manner, the lower end of the valve core penetrates through the central through hole of the annular flange and extends into the lower cavity, and the valve core is in clearance fit with the central through hole of the annular flange; in an initial state, the spring applies downward elastic force to the valve core and forces the sealing ring to be tightly attached to the upper end face of the central through hole so as to block a gap between the valve core and the central through hole of the annular flange; at the moment, the sealing ring is sleeved on the outer side of the radial through hole and closes the radial through hole; when the valve mouth of the inflation bottle is inserted into the lower cavity and pushed upwards, the valve core moves upwards by overcoming the elasticity of the spring, the sealing ring is far away from the upper end surface of the central through hole, and the gap between the valve core and the central through hole is opened; and meanwhile, the upper end of the valve core extends into the air inlet channel of the valve rod, and in the process, the top of the sealing ring is abutted against the outer edge of the bottom opening of the air inlet channel to push the sealing ring to move downwards, so that the radial through hole is exposed out of the lower part of the sealing ring and is communicated with the air inlet channel.

When a valve nozzle of the inflation bottle is inserted into the lower cavity and pushed upwards, the valve core overcomes the elastic force of the spring to move upwards, in the process, the top of the sealing ring is abutted against the outer edge of the opening at the bottom of the air inlet channel, the sealing ring is pushed to move downwards, the radial through hole is exposed out of the sealing ring, the radial through hole and the air inlet channel extend into the air inlet channel of the valve rod together with the upper end of the valve core and are communicated with the air inlet channel, and butane in the inflation bottle sequentially passes through the blind hole, the radial through hole and the air inlet channel and enters the air box; because the top of the sealing ring is sealed with the outer edge of the bottom opening of the air inlet channel at the moment, butane cannot overflow from the space between the sealing ring and the bottom of the valve rod. Meanwhile, the bottom of the sealing ring is far away from the upper end surface of the central through hole, and a gap between the valve core and the central through hole of the annular flange is opened; when the liquid level of the liquid butane in the gas tank exceeds the top end of the sleeve, the liquid butane in the gas tank flows into a gap between the sleeve and the valve rod, enters the upper cavity of the valve seat through the air leakage channel and finally overflows from a gap between the valve core and the central through hole of the annular flange.

Preferably, the height dimension of the seal ring is smaller than the height dimension of the annular groove. After the arrangement, when the valve nozzle of the inflation bottle is inserted into the lower cavity and pushed upwards, the radial through hole is exposed out of the sealing ring more easily, and the opening of the air inlet channel is ensured.

Preferably, the lower end of the valve rod is connected with a mounting head, and the lower end of the mounting head is in threaded connection with an opening at the top of the upper cavity; the mounting head is provided with a cavity penetrating through the upper end surface and the lower end surface of the mounting head, and the air inlet channel is communicated with the upper cavity through the cavity; the cutting groove is arranged on the peripheral wall of the mounting head and penetrates through the upper end face and the lower end face of the mounting head. The direct processing grooving and screw thread on the valve rod, the process is comparatively troublesome, and has the requirement to the wall thickness of valve rod, at present with grooving and screw thread setting to the installation overhead, again with the valve rod with the installation head assemble can, not only processing is convenient, save material moreover.

Preferably, the outer diameter of the mounting head is smaller than the inner diameter of the sleeve. Therefore, the gap between the sleeve and the valve rod can be prevented from being blocked, and further the influence on air leakage is avoided.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a half-section view of the utility model.

Fig. 3 is a schematic structural diagram of the middle valve rod of the present invention.

Fig. 4 is an explosion structure diagram of the valve core of the present invention.

Fig. 5 is a schematic structural diagram of the valve seat of the present invention.

Fig. 6 is an enlarged view of a portion a of fig. 2.

Description of reference numerals:

1. the valve comprises a valve seat, 2, a valve core, 3, a spring, 4, a valve rod, 5, an air inlet channel, 6, a cutting groove, 7, a sleeve, 8, a gap, 9, an annular flange, 10, an upper cavity, 11, a lower cavity, 12, a central through hole, 13, a blind hole, 14, an annular groove, 15, a radial through hole, 16, a sealing ring, 17 and an installing head.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present invention, and the terms "first", "second", etc. are only for distinguishing the names of the respective parts, have no primary or secondary relationship, and thus are not to be construed as limiting the present invention.

As shown in fig. 1, 2, 3, 4, 5 and 6;

the utility model discloses a lighter inflation valve: comprises a valve seat 1, a valve core 2, a spring 3 and a valve rod 4.

The valve seat 1 is internally provided with a cavity penetrating through the upper end surface and the lower end surface of the valve seat, the inner wall of the cavity is provided with an annular flange 9, the cavity is divided into an upper cavity 10 and a lower cavity 11 by the annular flange 9, and the upper cavity 10 and the lower cavity 11 are communicated through a central through hole 12 of the annular flange 9.

The valve rod 4 is internally provided with an air inlet channel 5 which runs through the upper end surface and the lower end surface of the valve rod 4, and the lower end of the valve rod 4 is connected with an opening at the top of the upper cavity 10 in a threaded manner. The peripheral wall of the valve rod 4 is provided with at least one cutting groove 6 which extends along the height direction and penetrates through the lower end surface of the valve rod 4, and the cutting groove 6 and the inner wall of the upper cavity 10 are enclosed to form an air leakage channel; the air release passage is communicated with the upper cavity body 10. The valve rod 4 is sleeved with a sleeve 7, the lower end of the sleeve 7 is connected with the valve seat 1, and the top of the valve rod 4 is arranged on the outer side of the sleeve 7, so that the opening at the top of the air inlet channel 5 is positioned on the outer side of the sleeve 7; a gap 8 is arranged between the sleeve 7 and the valve rod 4, and the gap 8 is communicated with the air release channel.

A blind hole 13 which extends along the axis direction of the valve core 2 and penetrates through the bottom of the valve core 2 is arranged in the valve core 2, an annular groove 14 is arranged on the outer peripheral wall of the valve core 2, and a radial through hole 15 communicated with the blind hole 13 is arranged on the inner bottom wall of the annular groove 14; the annular groove 14 is sleeved with a sealing ring 16, and the outer diameter of the sealing ring 16 is larger than the inner diameter of the lower opening of the air inlet channel 5 and the central through hole 12 of the annular flange 9. The valve core 2 is connected in the upper cavity 10 in a sliding manner, the lower end of the valve core 2 penetrates through the central through hole 12 of the annular flange 9 and extends into the lower cavity 11, and the valve core 2 is in clearance fit with the central through hole 12 of the annular flange 9.

One end of the spring 3 is propped against the bottom of the valve rod 4, and the other end is propped against the top of the valve core 2.

In an initial state, the valve core 2 closes the air inlet channel 5 and the air outlet channel; when the valve mouth of the inflation bottle is inserted into the lower cavity 11 and pushed upwards, the valve core 2 overcomes the elasticity of the spring 3 to move upwards, and the air inlet channel 5 and the air release channel are opened; when the valve mouth of the inflation bottle is withdrawn from the lower cavity 11, the valve core 2 is reset under the action of the elastic force of the spring 3, and the air inlet channel 5 and the air release channel are closed. In detail, in an initial state, the spring 3 applies downward elastic force to the valve core 2 and forces the sealing ring 16 to be tightly attached to the upper end face of the central through hole 12, so that a gap between the valve core 2 and the central through hole 12 of the annular flange 9 is blocked; at this time, the sealing ring 16 is sleeved outside the radial through hole 15 and closes the radial through hole 15 (namely, closes the air inlet channel 56 and the air release channel 11); when the valve mouth of the inflation bottle is inserted into the lower cavity 11 and pushed upwards, the valve core 2 overcomes the elastic force of the spring 3 to move upwards, the sealing ring 16 is far away from the upper end surface of the central through hole 12, and the gap between the valve core 2 and the central through hole 12 is opened; meanwhile, the upper end of the valve core 2 extends into the air inlet channel 5 of the valve rod 4, in the process, the top of the sealing ring 16 is abutted against the outer edge of the bottom opening of the air inlet channel 5, the sealing ring 16 is pushed to move downwards, and the radial through hole 15 is exposed out of the sealing ring 16 and is communicated with the air inlet channel 5 (namely, the air inlet channel 56 and the air release channel 11 are opened).

The utility model relates to an inflated concrete operation flow of lighter inflation valve as follows:

when a valve nozzle of the inflation bottle is inserted into the lower cavity 11 and pushed upwards, the valve core 2 overcomes the elastic force of the spring 3 to move upwards, in the process, the top of the sealing ring 16 is abutted against the outer edge of the opening at the bottom of the air inlet channel 5, the sealing ring 16 is pushed to move downwards, the radial through hole 15 is exposed out of the sealing ring 16, the radial through hole 15 and the upper end of the valve core 2 extend into the air inlet channel 5 of the valve rod 4 together and are communicated with the air inlet channel 5, and butane in the inflation bottle sequentially passes through the blind hole 13, the radial through hole 15 and the air inlet channel 5 and enters the air box; since the top of the sealing ring 16 is sealed with the outer edge of the bottom opening of the air inlet passage 5 at this time, butane does not escape from between the sealing ring 16 and the bottom of the valve stem 4. Meanwhile, the bottom of the sealing ring 16 is far away from the upper end surface of the central through hole 12, and a gap between the valve core 2 and the central through hole 12 of the annular flange 9 is opened; when the liquid level of the liquid butane in the gas tank exceeds the top end of the sleeve 7, the liquid butane in the gas tank flows into a gap 8 between the sleeve 7 and the valve rod 4, enters an upper cavity 10 of the valve seat 1 through an air leakage channel, and finally overflows from a gap between the valve core 2 and the central through hole 12; at the moment, the user can judge that the amount of the liquid butane in the air tank is at a preset numerical value, and timely withdraw the valve nozzle of the inflation bottle. The device is simple to use, can regulate and control the volume of filling liquid butane in the gas tank, and convenience of customers judges whether to finish filling gas.

The height dimension of the sealing ring 16 is smaller than that of the annular groove 14, so that when the valve nozzle of the inflation bottle is inserted into the lower cavity 11 and pushed upwards, the radial through hole 15 is exposed out of the sealing ring 16 more easily, and the air inlet channel 5 is ensured to be opened.

The lower end of the valve rod 4 is connected with a mounting head 17, and the lower end of the mounting head 17 is in threaded connection with an opening at the top of the upper cavity 10; the mounting head 17 is provided with a cavity penetrating through the upper end surface and the lower end surface of the mounting head, and the air inlet channel 5 is communicated with the upper cavity 10 through the cavity; the cutting slot 6 is arranged on the peripheral wall of the mounting head 17 and penetrates through the upper end face and the lower end face of the mounting head 17; the number of the slits 6 is four, and is uniformly distributed on the outer peripheral wall of the mounting head 17. If grooving 6 and screw thread were processed directly on valve rod 4, the process is comparatively troublesome, and has certain requirement to the thickness of valve rod 4 pipe wall, now with grooving 6 and screw thread setting to installation head 17 on, again with valve rod 4 with install the head 17 punching press assemble can, not only processing is convenient, save material moreover. The mounting head 17 has an outer diameter smaller than the inner diameter of the sleeve 7, so that the gap between the sleeve and the valve stem is prevented from being blocked, and the leakage is prevented from being affected.

When the lighter inflation valve is assembled, the sealing ring 16 is firstly sleeved on the annular groove 14 of the valve core 2, then the lower end of the valve core 2 passes through the central through hole 12 of the annular flange 9 and extends into the lower cavity 11, then one end of the spring 3 is sleeved on the top of the valve core 2, then the lower end of the mounting head 17 is connected to the opening at the top of the upper cavity 10 through threads, and the other end of the spring 3 is abutted against the mounting head 17; and finally, the sleeve 7 is sleeved on the valve rod 4, the lower end of the sleeve 7 is inserted into the top of the valve seat 1, and the assembling process is simple and convenient.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention, therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A lighter gas charging valve is characterized in that: comprises a valve seat (1), a valve core (2), a spring (3) and a valve rod (4); the valve seat (1) is internally provided with a cavity penetrating through the upper end surface and the lower end surface of the valve seat, and the valve core (2) is arranged in the cavity; an air inlet channel (5) penetrating through the upper end surface and the lower end surface of the valve rod (4) is arranged in the valve rod (4), and the lower end of the valve rod (4) is in threaded connection with an opening at the top of the cavity; the peripheral wall of the valve rod (4) is provided with at least one cutting groove (6) which extends along the height direction of the valve rod and penetrates through the lower end face of the valve rod (4), and the cutting groove (6) and the inner wall of the cavity are enclosed to form an air leakage channel; a sleeve (7) is sleeved on the valve rod (4), the lower end of the sleeve (7) is connected with the valve seat (1), and the top of the valve rod (4) is arranged on the outer side of the sleeve (7); a gap (8) is formed between the sleeve (7) and the valve rod (4), and the gap (8) is communicated with the air leakage channel; one end of the spring (3) is abutted against the bottom of the valve rod (4), and the other end of the spring is abutted against the top of the valve core (2); in an initial state, the valve core (2) closes the air inlet channel (5) and the air outlet channel; when a valve nozzle of the inflation bottle is inserted into the lower end of the cavity and pushed upwards, the valve core (2) overcomes the elasticity of the spring (3) to move upwards, and the air inlet channel (5) and the air release channel are opened; when the valve nozzle of the inflation bottle is withdrawn from the lower end of the cavity, the valve core (2) is reset under the action of the elastic force of the spring (3), and the air inlet channel (5) and the air release channel are closed.

2. The lighter gas filling valve of claim 1, wherein: an annular flange (9) is arranged on the inner wall of the cavity, the cavity is divided into an upper cavity (10) and a lower cavity (11) by the annular flange (9), the upper cavity (10) is communicated with the lower cavity (11) through a central through hole (12) of the annular flange (9), and the air leakage channel is communicated with the upper cavity (10); a blind hole (13) which extends along the axis direction of the valve core (2) and penetrates through the bottom of the valve core (2) is formed in the valve core (2), an annular groove (14) is formed in the outer peripheral wall of the valve core (2), and a radial through hole (15) communicated with the blind hole (13) is formed in the inner bottom wall of the annular groove (14); the annular groove (14) is sleeved with a sealing ring (16), and the outer diameter of the sealing ring (16) is larger than the inner diameter of the lower end opening of the air inlet channel (5) and the central through hole (12) of the annular flange (9); the valve core (2) is connected in the upper cavity (10) in a sliding manner, the lower end of the valve core (2) penetrates through a central through hole (12) of the annular flange (9) and extends into the lower cavity (11), and the valve core (2) is in clearance fit with the central through hole (12) of the annular flange (9); in an initial state, the spring (3) applies downward elastic force to the valve core (2) and forces the sealing ring (16) to be tightly attached to the upper end face of the central through hole (12), so that a gap between the valve core (2) and the central through hole (12) of the annular flange (9) is blocked; at the moment, the sealing ring (16) is sleeved on the outer side of the radial through hole (15) and closes the radial through hole (15); when a valve nozzle of the inflation bottle is inserted into the lower cavity (11) and pushed upwards, the valve core (2) overcomes the elasticity of the spring (3) to move upwards, the sealing ring (16) is far away from the upper end surface of the central through hole (12), and a gap between the valve core (2) and the central through hole (12) is opened; meanwhile, the upper end of the valve core (2) extends into the air inlet channel (5) of the valve rod (4), in the process, the top of the sealing ring (16) is abutted against the outer edge of the bottom opening of the air inlet channel (5), the sealing ring (16) is pushed to move downwards, and the radial through hole (15) is exposed from the sealing ring (16) and is communicated with the air inlet channel (5).

3. The lighter gas filling valve of claim 2, wherein: the height dimension of the sealing ring (16) is smaller than the height dimension of the annular groove (14).

4. The lighter gas filling valve of claim 2, wherein: the lower end of the valve rod (4) is connected with an installing head (17), and the lower end of the installing head (17) is in threaded connection with an opening at the top of the upper cavity (10); the mounting head (17) is provided with a cavity penetrating through the upper end surface and the lower end surface of the mounting head, and the air inlet channel (5) is communicated with the upper cavity (10) through the cavity; the cutting groove (6) is arranged on the peripheral wall of the mounting head (17) and penetrates through the upper end face and the lower end face of the mounting head (17).

5. The lighter inflation valve of claim 4, wherein: the outer diameter of the mounting head (17) is smaller than the inner diameter of the sleeve (7).