CN213237514U - Spray gun head and gas tank connecting structure - Google Patents
Spray gun head and gas tank connecting structure Download PDFInfo
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- CN213237514U CN213237514U CN202021931548.5U CN202021931548U CN213237514U CN 213237514 U CN213237514 U CN 213237514U CN 202021931548 U CN202021931548 U CN 202021931548U CN 213237514 U CN213237514 U CN 213237514U
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- gas
- spray gun
- gas tank
- chuck
- gun head
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Abstract
The utility model discloses a connecting structure of a spray gun head and a gas tank, which comprises a spray gun head, wherein a gas inlet support is arranged in the spray gun head, the lower end of the gas inlet support is extended and provided with a convex column, a connecting ring is rotatably connected on the convex column, a chuck is fixedly arranged at the lower end of the convex column on the gas inlet support, and gas inlet holes are coaxially arranged in the gas inlet support, the convex column and the chuck; the air inlet structure is characterized in that a plurality of buckles are uniformly arranged on the outer side of the circumference of the connecting ring at intervals along the circumferential direction, the buckles are all arranged along the axial direction of the air inlet hole, and a buckle foot is arranged on the outer side of each buckle; a plurality of expansion bodies which are in one-to-one correspondence with the buckles are uniformly arranged on the outer side of the circumference of the chuck at intervals along the axial direction; the outer sides of the plurality of expansion bodies are provided with positioning grooves, and the inner side walls of the buckles corresponding to the expansion bodies are provided with positioning convex points; the spray gun head and gas tank connecting structure is simple in structure, and can effectively prevent the expansion body from rotating after the buckle is opened.
Description
Technical Field
The utility model belongs to the technical field of the flame gun, specific saying so relates to a spray gun head and gas pitcher connection structure.
Background
When traditional spray gun head and card jar are connected, insert the draw-in groove of gas pitcher upper end with the knot foot of the overhead buckle of spray gun, the assembly angle of rethread rotatory spray gun head utilizes the expander with the knot foot expand chucking of buckle in the draw-in groove to accomplish being connected of spray gun head and gas pitcher. However, in the using process of a consumer, the spray gun head may rotate in the loosening direction, so that the expansion body rotates to be separated from the buckle, the buckle foot of the buckle retracts, the sealing ring loses the sealing effect, and the product leaks air.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a spray gun head and gas pitcher connection structure, it is simple structure not only, can prevent effectively moreover that the expansion body from taking place to circle round after opening the buckle.
In order to achieve the above object, the utility model provides a following technical scheme:
a structure for connecting a spray gun head and a gas tank comprises the spray gun head, wherein a gas inlet support is arranged in the spray gun head, a convex column extends from the lower end of the gas inlet support, a connecting ring is rotatably connected to the convex column, a chuck is fixedly arranged at the lower end of the convex column on the gas inlet support, and gas inlet holes are coaxially arranged in the gas inlet support, the convex column and the chuck; a plurality of buckles are uniformly arranged on the circumferential outer side of the connecting ring at intervals along the circumferential direction, the buckles are all arranged along the axial direction of the air inlet hole, and the outer side of each buckle is provided with a buckle foot; a plurality of expansion bodies which are in one-to-one correspondence with the buckles are uniformly arranged on the outer side of the circumference of the chuck at intervals along the axial direction; the outer sides of the plurality of expansion bodies are provided with positioning grooves, and the inner side walls of the buckles corresponding to the expansion bodies are provided with positioning convex points; when the spray gun head is connected with the gas tank, the positioning salient points are positioned in the positioning grooves.
Through above-mentioned technical scheme, when the spray gun head is connected with the gas pitcher, rotate the spray gun head and drive the chuck and rotate, drive the expander to change over to the inboard of buckle expand the chucking in the draw-in groove of gas pitcher upper end with the knot foot of buckle during the chuck rotates, in the location bump on the buckle got into the positioning groove on the expander this moment to can realize the location of expander, prevent effectively that the expander from taking place to circle round in the use, produce the phenomenon of gas leakage.
Furthermore, an air outlet head used for being inserted into the air inlet hole is arranged in the middle of the upper end of the air tank, an annular slot for allowing the buckle and the expansion body to extend into is arranged at the outer side of the circumference of the air outlet head at the upper end of the air tank, and a clamping groove for allowing the buckle foot to extend into is formed in the outer ring side wall of the annular slot; this setting can be convenient for the installation of spray gun head.
Furthermore, a positioning lug is arranged on the outer side of the circumference of the connecting ring, and a positioning groove for inserting the positioning lug is arranged on the outer side of the upper end of the gas tank; when the arrangement makes the spray gun head be connected with the gas tank, the positioning lug is inserted into the positioning groove, so that the connecting ring can be effectively prevented from rotating along with the rotation when the spray gun head is rotated.
Furthermore, the chuck is fixedly arranged at the lower end of the air inlet support by two symmetrically arranged bolts; two arc-shaped avoidance grooves for bolts to extend into are symmetrically arranged in the connecting ring; can realize the chuck through two bolts and be connected with dismantling of air inlet support, set up the arc and dodge the groove and can prevent that the spray gun head from rotating, the bolt can promote the connecting ring and rotate.
Furthermore, a first sealing ring is arranged at the air inlet at the upper end of the chuck and the lower end of the convex column; a second sealing ring sleeved on the convex column is arranged between the lower end of the air inlet support and the connecting ring; the lower end of the chuck is provided with a third sealing ring which is used for being tightly pressed at the upper end of the gas tank; the arrangement of the first sealing ring, the second sealing ring and the third sealing ring can prevent gas leakage when the spray gun head is connected with a gas tank.
Furthermore, one side of each buckle is provided with a limiting lug; the limiting lug can be placed in the process that the expansion body rotates to open the buckling feet on the buckle, and the expansion body rotates to pass through the head to be separated from the inner side of the buckle; when the expansion body is abutted against the limiting lug, the expansion body cannot continue to rotate.
Advantageous effects
Compared with the prior art, the technical scheme of the utility model have following advantage:
when the spray gun head is connected with the gas tank, the spray gun head is rotated to drive the chuck to rotate, the chuck drives the expansion body to rotate to the inner side of the buckle to expand the buckling foot of the buckle to be clamped in the clamping groove at the upper end of the gas tank, and the positioning convex point on the buckle enters the positioning groove on the expansion body at the moment, so that the positioning of the expansion body can be realized, and the expansion body is effectively prevented from circling around to generate gas leakage in the use process.
Drawings
Fig. 1 is a partial sectional view of a connection structure of a spray gun head and a gas tank according to the present invention;
fig. 2-3 are bottom views of the spray gun head of the present invention;
FIG. 4 is an enlarged view of the structure at A in FIG. 2;
fig. 5 is a partial cross-sectional view of a gas tank according to the present invention.
Detailed Description
Referring to fig. 1-5, a connection structure of a spray gun head and a gas tank includes a spray gun head 1, wherein a gas inlet support 2 is arranged in the spray gun head 1, a convex column 21 extends from the lower end of the gas inlet support 2, a connecting ring 3 is rotatably connected to the convex column 21, a chuck 4 is fixedly mounted at the lower end of the convex column 21 on the gas inlet support 2, and gas inlet holes 5 are coaxially arranged in the gas inlet support 2, the convex column 21 and the chuck 4; four buckles 31 are uniformly arranged on the circumferential outer side of the connecting ring 3 at intervals along the circumferential direction, the buckles 31 are all arranged along the axial direction of the air inlet hole 5, and a buckling foot 32 is arranged on the outer side of each buckle 31; the outer side of the circumference of the chuck 4 is uniformly provided with four expansion bodies 41 which are in one-to-one correspondence with the buckles 31 at intervals along the axial direction; positioning grooves 42 are formed in the outer sides of the two symmetrical expansion bodies 41, and positioning convex points 33 are arranged on the inner side walls of the buckles 31 corresponding to the expansion bodies 41; when the lance head 1 is connected to the gas tank 6, the positioning projections 33 are located in the positioning grooves 42.
An air outlet head 61 for being inserted into the air inlet 5 is arranged in the middle of the upper end of the air tank 6, an annular slot 62 for the buckle 31 and the expansion body 41 to extend into is arranged at the outer side of the circumference of the air outlet head 61 at the upper end of the air tank 6, and a clamping groove 63 for the buckle foot 32 to extend into is arranged on the outer ring side wall of the annular slot 62; this arrangement can facilitate the installation of the lance head 1.
A positioning lug 34 is arranged on the outer side of the circumference of the connecting ring 3, and a positioning groove (not shown in the prior art) for inserting the positioning lug 34 is arranged on the outer side of the upper end of the gas tank 6; when the arrangement is such that the spray gun head 1 is connected to the gas tank 6, the positioning projection 34 is inserted into the positioning groove, which can effectively prevent the connecting ring 3 from following rotation when the spray gun head 1 is rotated.
The chuck 4 is fixedly arranged at the lower end of the air inlet bracket 2 by two symmetrically arranged bolts 7; two arc-shaped avoiding grooves 35 for the bolts 7 to extend into are symmetrically arranged in the connecting ring 3; can realize dismantling of chuck 4 and air inlet support 2 through two bolts 7 and be connected, set up the arc and dodge groove 35 and can prevent that spray gun head 1 from rotating, bolt 7 can promote the rotation of connecting ring 3.
A first sealing ring 8 is arranged at the air inlet 5 at the upper end of the chuck 4 and the lower end of the convex column 21; a second sealing ring 9 sleeved on the convex column 21 is arranged between the lower end of the air inlet support 2 and the connecting ring 3; the lower end of the chuck 4 is provided with a third sealing ring 10 which is tightly pressed on the upper end of the gas tank 6; the provision of the first seal ring 8, the second seal ring 9 and the third seal ring 10 prevents gas leakage when the lance head 1 is connected to the gas tank 6.
In addition, one side of each buckle 31 is provided with a limit bump 36; the limiting bump 36 can be placed in the process that the expansion body 41 rotates to open the buckling feet 32 on the buckle 31, and the expansion body 41 rotates over the head to separate from the inner side of the buckle 31; when the expander 41 abuts against the limit lug 36, the expander 41 cannot rotate any further.
When the spray gun head 1 is connected with the air tank 6, firstly, the four buckles 31 extend into the annular slot 62, meanwhile, the positioning lug 34 is inserted into the positioning groove, and the air outlet is inserted into the air inlet 5; then, the spray gun head 1 is rotated to drive the chuck 4 to rotate, the chuck 4 drives the expansion body 41 to rotate to the inner side of the buckle 31 to expand and clamp the buckling foot 32 of the buckle 31 in the clamping groove 63 at the upper end of the air tank 6 when rotating, and the positioning salient point 33 on the buckle 31 enters the positioning groove 42 on the expansion body 41, so that the expansion body 41 can be positioned, and the phenomenon that the expansion body 41 rotates around to generate air leakage in the use process is effectively prevented.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A structure for connecting a spray gun head and a gas tank comprises the spray gun head, wherein a gas inlet support is arranged in the spray gun head, a convex column extends from the lower end of the gas inlet support, a connecting ring is rotatably connected to the convex column, a chuck is fixedly arranged at the lower end of the convex column on the gas inlet support, and gas inlet holes are coaxially arranged in the gas inlet support, the convex column and the chuck; the air inlet structure is characterized in that a plurality of buckles are uniformly arranged on the outer side of the circumference of the connecting ring at intervals along the circumferential direction, the buckles are all arranged along the axial direction of the air inlet hole, and a buckle foot is arranged on the outer side of each buckle; a plurality of expansion bodies which are in one-to-one correspondence with the buckles are uniformly arranged on the outer side of the circumference of the chuck at intervals along the axial direction; the outer sides of the plurality of expansion bodies are provided with positioning grooves, and the inner side walls of the buckles corresponding to the expansion bodies are provided with positioning convex points; when the spray gun head is connected with the gas tank, the positioning salient points are positioned in the positioning grooves.
2. The connection structure of the lance head and the gas tank as claimed in claim 1, wherein a gas outlet is arranged in the middle of the upper end of the gas tank and is inserted into the gas inlet, an annular slot into which the buckle and the expansion body extend is arranged at the outer side of the circumference of the gas outlet at the upper end of the gas tank, and a clamping groove into which the buckle foot extends is arranged on the outer annular side wall of the annular slot.
3. The connection structure of the lance head and the gas tank according to claim 1, wherein a positioning projection is provided on an outer side of a circumference of the connection ring, and a positioning groove into which the positioning projection is inserted is provided on an outer side of an upper end of the gas tank.
4. The connection structure of the lance head and the gas tank as claimed in claim 1, wherein the chuck is fixedly mounted at the lower end of the gas inlet support by two symmetrically arranged bolts; two arc-shaped avoiding grooves for bolts to extend into are symmetrically arranged in the connecting ring.
5. The connection structure of the lance head and the gas tank according to claim 1, wherein the upper end of the chuck and the lower end of the boss are provided with first sealing rings at the gas inlet; a second sealing ring sleeved on the convex column is arranged between the lower end of the air inlet support and the connecting ring; the lower extreme of chuck is equipped with and is used for compressing tightly the third sealing washer in the gas pitcher upper end.
6. The connection structure of the lance head and the gas tank as claimed in claim 1, wherein a limit projection is provided on one side of each of the catches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021931548.5U CN213237514U (en) | 2020-09-07 | 2020-09-07 | Spray gun head and gas tank connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021931548.5U CN213237514U (en) | 2020-09-07 | 2020-09-07 | Spray gun head and gas tank connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213237514U true CN213237514U (en) | 2021-05-18 |
Family
ID=75871436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021931548.5U Active CN213237514U (en) | 2020-09-07 | 2020-09-07 | Spray gun head and gas tank connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213237514U (en) |
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2020
- 2020-09-07 CN CN202021931548.5U patent/CN213237514U/en active Active
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