CN214870318U - Non-adjusting leakage-proof air control valve for nailing gun - Google Patents
Non-adjusting leakage-proof air control valve for nailing gun Download PDFInfo
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- CN214870318U CN214870318U CN202121056535.2U CN202121056535U CN214870318U CN 214870318 U CN214870318 U CN 214870318U CN 202121056535 U CN202121056535 U CN 202121056535U CN 214870318 U CN214870318 U CN 214870318U
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Abstract
An adjustment-free anti-leakage control valve for a nailing gun comprises a fixed sleeve, a moving part, a spring part and a driving rod, wherein the moving part is inserted into a sleeve hole of the fixed sleeve and can move forwards and backwards relative to the fixed sleeve, the spring part is arranged between the fixed sleeve and the moving part and pushes the moving part forwards, the driving rod is positioned at the front side of the moving part and pushes against the moving part, the fixed sleeve is provided with four communicating hole groups, the moving part is provided with an initial position and a striking position, and the relative position of the moving part in the fixed sleeve can be utilized to change the path through which the communicating hole groups of the fixed sleeve are communicated, so that the path through which high-pressure gas flows is changed.
Description
Technical Field
The utility model relates to a pneumatic nailing gun, in particular to an adjustment-free anti-leakage air control valve of a nailing gun.
Background
Referring to fig. 7 and 8, in the conventional pneumatic nailing gun, gas mainly enters the piston chamber 92 of the body 91 to drive the piston 93 in the piston chamber 92 to move forward and backward relative to the piston chamber 92, and further to drive the push rod set 94 connected to the piston 93 to move forward and backward relative to the body 91, so that the push rod set 94 drives the nozzle set 95 to open and close relatively, and the C-shaped nails disposed in the nozzle set 95 are bound into a loop shape.
A control valve assembly 80 is disposed in a gas flow passage of a main body 91 of a conventional pneumatic nailing gun, the control valve assembly 80 includes a front fixing member 81, a rear fixing member 82, a moving member 83, a driving rod 835 and a spring member 84, the front fixing member 81 and the rear fixing member 82 are arranged at intervals, the moving member 83 is located between the front fixing member 81 and the rear fixing member 82, a sealing member 832 and a spring 833 are respectively disposed at the front end and the rear end of the moving member 83, the driving rod 835 is connected to the moving member 83 and can be pushed by a trigger 96, and the spring member 84 is disposed in the rear fixing member 82 and pushes the rear fixing member 82 forward.
Referring to fig. 7, when the trigger 96 is not pressed, the spring 84 pushes the moving member 83 forward, so that the air-tight member 832 at the front end of the moving member 83 seals the gap between the front fixed member 81 and the moving member 83, and a gap is formed between the moving member 83 and the rear fixed member 82, so that the high-pressure air entering the body 91 can enter the piston chamber 92 from the rear end of the piston chamber 92, and push the piston 93 forward.
Referring to fig. 8, after the trigger 96 is pressed, the trigger 96 pushes the driving rod 835 to move backward and drives the moving member 83 to move backward, so that a gap is formed between the moving member 83 and the front fixed member 81, and the air-tight member 833 at the rear end of the moving member 83 closes the gap between the rear fixed member 82 and the moving member 83, so as to change the portion of the body 91 communicating with the air flow passage, so that the high-pressure air entering the body 91 can enter the piston chamber 92 from the front end of the piston chamber 92 and push the piston 93 backward.
However, since the moving element 83 is displaced between the front fixed element 81 and the rear fixed element 82, if the relative position of the front fixed element 81 and the rear fixed element 82 mounted on the body 91 is too large, the moving element 83 cannot move to a position where the airtight member 833 at the rear end of the moving element 83 completely closes the gap between the moving element 83 and the rear fixed element 82, and thus air leakage is caused, and therefore, after the assembly is completed, whether the relative positions of the front fixed element 81, the rear fixed element 82 and the moving element 83 are correct or not must be confirmed and adjusted again, so as to avoid air leakage, which is to be improved.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings, the main object of the present invention is to provide an adjustment-free anti-leakage control valve for a nailing gun, which can improve the leakage problem of the nailing gun caused by the assembly defects during firing.
In order to achieve the above object, the utility model discloses an adjustment-free anti-leakage air control valve of nailing gun, it is installed among the gas flow channel of nailing gun body, and this nailing gun adjustment-free anti-leakage air control valve includes:
a fixing sleeve fixed in the gas flow passage of the nailing gun body, the fixing sleeve having a sleeve hole, a first communicating hole group, a second communicating hole group, a third communicating hole group, a fourth communicating hole group, a first convex portion, a second convex portion, a third convex portion, and a fourth convex portion, the first communicating hole group, the second communicating hole group, the third communicating hole group, and the fourth communicating hole group being arranged in sequence from front to back at intervals and communicating the outer space of the fixing sleeve with the sleeve hole, the first convex portion, the second convex portion, the third convex portion, and the fourth convex portion being arranged in the sleeve hole in sequence from front to back at intervals, the first convex portion being located between the first communicating hole group and the second communicating hole group, the second convex portion being located between the second communicating hole group and the third communicating hole group, the third convex portion being located between the third communicating hole group and the fourth communicating hole group, the fourth convex part is positioned at the rear side of the fourth communicating hole group;
the moving piece is inserted in the trepanning of the fixed sleeve and can move forwards and backwards relative to the fixed sleeve, the moving piece is provided with a first airtight part and a second airtight part, the first airtight part and the second airtight part are both convexly arranged on the periphery of the moving piece and are arranged forwards and backwards at intervals in sequence, and the moving piece is provided with an initial position and a striking position;
the spring piece is arranged between the fixed sleeve and the moving piece and pushes the moving piece forwards; and
the driving rod is inserted into the trepan boring of the fixed sleeve, is positioned at the front side of the moving piece and abuts against the moving piece; wherein
When the moving member is located at the initial position, the first airtight part closes a gap between the moving member and the first convex part, and the second airtight part closes a gap between the moving member and the third convex part; and
when the moving member is located at the percussion position, the first airtight portion closes a gap between the first airtight portion and the second convex portion, and the second airtight portion closes a gap between the second airtight portion and the third convex portion.
Preferably, the adjustment-free anti-leakage control valve of the nailing gun as described above, wherein the fixing sleeve comprises a front sleeve, a rear sleeve, and an end cap, the rear sleeve is located between the front sleeve and the end cap, the front end of the rear sleeve abuts against the front sleeve, and the rear end of the rear sleeve abuts against the end cap;
the trepan boring extends from the front sleeve to the rear sleeve;
the first communicating hole group is formed on the front sleeve; and
the second communicating hole group, the third communicating hole group, the fourth communicating hole group, the first convex part, the second convex part, the third convex part and the fourth convex part are all formed on the rear sleeve.
Preferably, the adjustment-free anti-leakage control valve of the nailing gun as described above, wherein the moving member has a central hole, a front moving through hole set, and a rear moving through hole set, the central hole penetrates through the front end and the rear end of the moving member, the front moving through hole set and the rear moving through hole set both communicate the central hole and the trepanning of the fixed sleeve, the front moving through hole set is located at the front side of the first airtight portion, and the rear moving through hole set is located at the rear side of the second airtight portion.
Preferably, the adjustment-free anti-leakage control valve of the nailing gun as described above, wherein the driving rod is inserted into the central hole of the moving member, and has a blind hole and a driving through hole set, the blind hole extends forward from the rear end of the driving rod and is communicated with the central hole of the moving member, and the driving through hole set is communicated with the blind hole and the forward moving through hole set of the moving member.
Preferably, the adjustment-free anti-leakage control valve of the nailing gun as described above, wherein when the moving member is located at the initial position, the front end of the moving member abuts against the rear end of the front sleeve.
The utility model discloses the relative position of the moving member that the utilization is located this fixed sleeve's trepanning, and change this trepanning and this first intercommunication punch combination, this second intercommunication punch combination, the route that this third intercommunication punch combination and this fourth intercommunication punch combination are linked together, and then change the route that is linked together of the gas flow way of this nailing gun body, when this moving member is located initial position, high-pressure gas can get into by the rear end of this piston chamber, when the moving member is located the percussion position, high-pressure gas can get into by the front end of this piston chamber.
Because the moving part relatively moves in the trepan boring of the fixed sleeve and the clearance between the moving part and the fixed sleeve is sealed by the trepan boring of the fixed sleeve, the relative distance between the initial position and the triggering position of the moving part is the relative distance between the first convex part and the second convex part corresponding to the fixed sleeve and the relative distance between the third convex part and the fourth convex part corresponding to the fixed sleeve, and can not be changed by the influence of the relative position of assembly, so that the moving part can really seal the clearance between the moving part and the second convex part and the fourth convex part when in the triggering position and prevent air leakage.
Drawings
FIG. 1 is an enlarged, partially exploded view of a nailing gun equipped with a preferred embodiment of the present invention.
Fig. 2 is an exploded perspective view of the preferred embodiment of the present invention.
FIG. 3 is a side sectional view of the preferred embodiment of the present invention installed in the gas flow passage of the nailing gun, showing the moving member at the initial position.
FIG. 4 is a side sectional view of the preferred embodiment of the present invention installed in a nailing gun, showing the moving member in the striking position.
FIG. 5 is a schematic view showing the operation of the nailing machine equipped with the preferred embodiment of the present invention, showing the moving member at the initial position.
FIG. 6 is a schematic view showing the operation of the nailing gun equipped with the preferred embodiment of the present invention, showing the moving member in the striking position.
FIG. 7 is a schematic view showing the operation of the conventional pneumatic nailing machine without pressing the trigger.
FIG. 8 is a schematic view showing the operation of a conventional pneumatic nailing machine after being pressed against a trigger.
Detailed Description
The following description of the preferred embodiments of the present invention will be made in conjunction with the drawings and the accompanying drawings to further illustrate the technical means adopted to achieve the objects of the present invention.
Referring to fig. 1, 5 and 6, an adjustment-free anti-leakage control valve 20 of a nailing gun of the present invention is installed in a gas flow passage of a nailing gun body 10. the nailing gun body 10 mainly includes a piston chamber 12, a gas flow passage, a piston 13, a push rod set 15, a nozzle set 17, and a trigger 19, wherein the piston 13 is movably disposed in the piston chamber 12, the push rod set 15 is connected to the piston 13 and is used to drive the nozzle set 17 to open and close relatively, and the trigger 19 is used to press the anti-leakage control valve 20.
Referring to fig. 2 to 4, the anti-leakage control valve 20 includes a fixed sleeve 21, a moving member 23, a spring member 25, and a driving rod 27.
The fixing socket 21 is fixed in the gas flow passage of the nailing gun body 10, the fixing socket 21 having a sleeve hole 220, a first communicating hole set 221, a second communicating hole set 222, a third communicating hole set 223, a fourth communicating hole set 224, a first protrusion 216, a second protrusion 217, a third protrusion 218, and a fourth protrusion 219.
The first communicating hole set 221, the second communicating hole set 222, the third communicating hole set 223, and the fourth communicating hole set 224 are arranged from front to back at intervals in sequence, and all communicate the external space of the fixing sleeve 21 and the trepanning 220, the first communicating hole set 221, the second communicating hole set 222, the third communicating hole set 223, and the fourth 224 respectively include at least one communicating hole for communicating the external space of the fixing sleeve 21 and the trepanning 220, in a preferred embodiment of the present invention, the first communicating hole set 221, the second communicating hole set 222, the third communicating hole set 223, and the fourth communicating hole set 224 all include a plurality of communicating holes arranged at intervals.
The first protrusion 216, the second protrusion 217, the third protrusion 218, and the fourth protrusion 219 are all disposed in the sleeve hole 220 and are sequentially arranged from front to back at intervals, the first protrusion 216 is disposed between the first communicating hole set 221 and the second communicating hole set 222, the second protrusion 217 is disposed between the second communicating hole set 222 and the third communicating hole set 223, the third protrusion 218 is disposed between the third communicating hole set 223 and the fourth communicating hole set 224, and the fourth protrusion 219 is disposed at the back side of the fourth communicating hole set 224.
The moving member 23 is inserted into the sleeve hole 220 of the fixed sleeve 21 and can move forward and backward relative to the fixed sleeve 21, the moving member 23 has a first airtight portion 232 and a second airtight portion 233, and the first airtight portion 232 and the second airtight portion 233 are both protruded on the outer periphery of the moving member 23 and are arranged at intervals forward and backward.
The moving member 23 has an initial position (as shown in fig. 3) and a striking position (as shown in fig. 4), referring to fig. 3, when the moving member 23 is located at the initial position, the first airtight portion 232 seals the gap between the moving member 23 and the first protrusion 216, the second airtight portion 233 seals the gap between the moving member 23 and the third protrusion 218, so that the second communicating hole set 222 and the third communicating hole set 223 are communicated through the sleeve hole 220, the first communicating hole set 221 and the second communicating hole set 222 are not communicated, and the third communicating hole set 223 and the fourth communicating hole set 224 are not communicated.
Referring to fig. 4, when the moving member 23 is located at the triggering position, the first airtight portion 232 seals the gap between the moving member 23 and the second protrusion 217, the second airtight portion 233 seals the gap between the moving member 23 and the fourth protrusion 219, so that the third communicating hole group 223 and the fourth communicating hole group 224 of the fixed sleeve 21 are communicated through the sleeve hole 220, the first communicating hole group 221 and the second communicating hole group 222 are communicated through the sleeve hole 220, and the second communicating hole group 222 and the third communicating hole group 223 are not communicated.
Referring to fig. 2 to 4, the spring 25 is disposed between the fixed sleeve 21 and the moving member 23 and pushes the moving member 23 forward; the driving rod 27 is inserted into the sleeve hole 220 of the fixed sleeve 21, located at the front side of the moving member 23 and abutting against the moving member 23, and the driving rod 27 can be pressed by the trigger 19 to drive the moving member 23 to move backward.
Further, the fixed sleeve 21 includes a front sleeve 211, a rear sleeve 212, and an end cap 213, the rear sleeve 212 is located between the front sleeve 211 and the end cap 213, the front end of the rear sleeve 212 abuts against the front sleeve 211, the rear end of the rear sleeve 212 abuts against the end cap 213, and the trepan boring 220 extends from the front sleeve 211 to the rear sleeve 212; the first communication hole group 221 is formed in the front sleeve 211, the second communication hole group 222, the third communication hole group 223, the fourth communication hole group 224, and the first convex portion 216, the second convex portion 217, the third convex portion 218, the fourth convex portion 219 are formed in the rear sleeve 212.
The moving member 23 has a central hole 235, a front moving through hole set 234, and a rear moving through hole set 236, the central hole 235 penetrates through the front and rear ends of the moving member 23, the front moving through hole set 234 and the rear moving through hole set 236 are both connected to the central hole 235 and the sleeve hole 220 of the fixed sleeve 21, the front moving through hole set 234 is located at the front side of the first airtight portion 232, the rear moving through hole set 236 is located at the rear side of the second airtight portion 233, the driving rod 27 is inserted into the central hole 235 of the moving member 23, and has a blind hole 272 and a driving through hole set 274, the blind hole 272 extends forward from the rear end of the driving rod 27 and is connected to the central hole 235 of the moving member 23, and the driving through hole set 274 is connected to the blind hole 272 and the front moving through hole set 234 of the moving member 23.
Preferably, when the moving member 23 is located at the initial position, the front end of the moving member 23 abuts against the rear end of the front sleeve 211.
Referring to fig. 1, 5 and 6, the gas flow passage of the nailing gun body 10 includes an inlet flow passage 141, an outlet flow passage 142, a first connecting passage 143, a second connecting passage 144 and a control valve accommodating portion 145, the anti-leakage control valve 20 is installed in the control valve accommodating portion 145, and one end of the intake flow passage 141, one end of the exhaust flow passage 142, one end of the first connection passage 143, one end of the second communication passage 144 is connected to the control valve accommodating portion 145, the other end of the first communication passage 143 is connected to the front end of the piston chamber 12, the other end of the second communication passage 144 is connected to the rear end of the piston chamber 12, the first communicating hole set 221 communicates with the exhaust channel 142, the second communicating hole set 222 communicates with the second communicating channel 144, the third communication hole group 223 communicates with the intake runner 141, and the fourth communication hole group 224 communicates with the first communication passage 143.
Referring to fig. 3 and 5, when the trigger 19 is not pressed, the moving member 23 is pushed by the spring member 25, and is located at the initial position, because the first airtight portion 232 of the moving member 23 seals the gap between the moving member 23 and the first protrusion 216, and the second airtight portion 233 seals the gap between the moving member 23 and the third protrusion 218, the second communicating hole set 222 and the third communicating hole set 223 of the fixed sleeve 21 are communicated through the sleeve hole 220, the first communicating hole set 221 and the second communicating hole set 222 are not communicated, and the third communicating hole set 223 and the fourth communicating hole set 224 are not communicated.
After entering from the inlet flow passage 141, the high pressure gas enters the trepan boring 220 through the third communication hole group 223 of the fixed sleeve 21, flows to the second communication passage 144 from the second communication hole group 222, enters the piston chamber 12 from the rear end of the piston chamber 12, and pushes the piston 13 forward.
The air in the piston chamber 12 at the front side of the piston 13 can enter the central hole 235 of the moving member 23 from the first connecting channel 143 through the fourth communicating hole set 224 of the fixed sleeve 21 and the rear moving hole set 236 of the moving member 23, flow to the blind hole 272 of the driving rod 27, flow to the exhaust channel 142 through the driving hole set 274, the sleeve hole 220 and the first communicating hole set 221, and be exhausted from the exhaust channel 142.
Referring to fig. 4 and 6, after the trigger 19 is pressed, the trigger 19 pushes the driving rod 27 backward to drive the moving member 23 to move backward to the trigger position, since the first airtight portion 232 of the moving member 23 seals the gap between the moving member 23 and the second protrusion 217, and the second airtight portion 233 seals the gap between the moving member 23 and the third protrusion 218, the third communicating hole set 223 and the fourth communicating hole set 224 of the fixed sleeve 21 are communicated through the sleeve hole 220, the first communicating hole set 221 and the second communicating hole set 222 are communicated through the sleeve hole 220, and the second communicating hole set 222 and the third communicating hole set 223 are not communicated.
After entering from the inlet flow channel 141, the high pressure gas enters the sleeve hole 220 through the third communication hole group 223 of the fixed sleeve 21, flows to the first communication passage 143 from the fourth communication hole group 224, enters the piston chamber 12 from the front end of the piston chamber 12, and pushes the piston 13 backward.
The air in the piston chamber 12 at the rear side of the piston 13 can enter the sleeve hole 220 through the second communication hole set 222 of the fixed sleeve 21 from the second communication channel 144, and can flow to the section of the sleeve hole 220 at the front sleeve 211 through the front movement through hole set 234 and the central hole 235 of the moving member 23, and flow to the exhaust channel 142 from the first communication hole set 221, and is exhausted from the exhaust channel 142.
Because the moving member 23 moves relatively in the sleeve hole 220 of the fixed sleeve 21 and the sleeve hole 220 of the fixed sleeve 21 closes the gap between the moving member 23 and the fixed sleeve 21, the relative distance between the initial position and the cocked position of the moving member 23 corresponds to the relative distance between the first protrusion 216 and the second protrusion 217 of the fixed sleeve 21 and the relative distance between the third protrusion 218 and the fourth protrusion 219, and is not changed by the influence of the assembly relative position, so that the moving member 23 can reliably close the gap between the moving member 23 and the second protrusion 217 and the fourth protrusion 219 when in the cocked position, and prevent air leakage.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with the preferred embodiment, it is not intended to limit the present invention, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the technical scope of the present invention, but all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.
Claims (5)
1. An adjustment-free anti-leakage control valve for a nailing gun, which is installed in a gas flow passage of a nailing gun body, the adjustment-free anti-leakage control valve for a nailing gun comprising:
a fixing sleeve fixed in the gas flow passage of the nailing gun body, the fixing sleeve having a sleeve hole, a first communicating hole group, a second communicating hole group, a third communicating hole group, a fourth communicating hole group, a first convex portion, a second convex portion, a third convex portion, and a fourth convex portion, the first communicating hole group, the second communicating hole group, the third communicating hole group, and the fourth communicating hole group being arranged in sequence from front to back at intervals and communicating the outer space of the fixing sleeve with the sleeve hole, the first convex portion, the second convex portion, the third convex portion, and the fourth convex portion being arranged in the sleeve hole in sequence from front to back at intervals, the first convex portion being located between the first communicating hole group and the second communicating hole group, the second convex portion being located between the second communicating hole group and the third communicating hole group, the third convex portion being located between the third communicating hole group and the fourth communicating hole group, the fourth convex part is positioned at the rear side of the fourth communicating hole group;
the moving piece is inserted in the trepanning of the fixed sleeve and can move forwards and backwards relative to the fixed sleeve, the moving piece is provided with a first airtight part and a second airtight part, the first airtight part and the second airtight part are both convexly arranged on the periphery of the moving piece and are arranged forwards and backwards at intervals in sequence, and the moving piece is provided with an initial position and a striking position;
the spring piece is arranged between the fixed sleeve and the moving piece and pushes the moving piece forwards; and
the driving rod is inserted into the trepan boring of the fixed sleeve, is positioned at the front side of the moving piece and abuts against the moving piece; wherein
When the moving member is located at the initial position, the first airtight part closes a gap between the moving member and the first convex part, and the second airtight part closes a gap between the moving member and the third convex part; and
when the moving member is located at the percussion position, the first airtight portion closes a gap between the first airtight portion and the second convex portion, and the second airtight portion closes a gap between the second airtight portion and the third convex portion.
2. The adjustment-free gas leakage prevention control valve for a nailing gun as claimed in claim 1, wherein:
the fixed sleeve comprises a front sleeve, a rear sleeve and an end cover, wherein the rear sleeve is positioned between the front sleeve and the end cover, the front end of the rear sleeve is attached to the front sleeve, and the rear end of the rear sleeve is attached to the end cover;
the trepan boring extends from the front sleeve to the rear sleeve;
the first communicating hole group is formed on the front sleeve; and
the second communicating hole group, the third communicating hole group, the fourth communicating hole group, the first convex part, the second convex part, the third convex part and the fourth convex part are all formed on the rear sleeve.
3. The tuning-free anti-blow-off control valve of claim 2, wherein the moving member has a center hole, a front moving through hole set and a rear moving through hole set, the center hole passing through the front end and the rear end of the moving member, the front moving through hole set and the rear moving through hole set communicating the center hole with the sleeve hole of the fixing sleeve, the front moving through hole set being located at the front side of the first airtight portion, the rear moving through hole set being located at the rear side of the second airtight portion.
4. The tuning-free anti-blow-off control valve of a nailing gun as claimed in claim 3, wherein the driving rod is inserted into the central hole of the moving member and has a blind hole extending forward from the rear end of the driving rod and communicating with the central hole of the moving member and a driving through hole set communicating the blind hole with the forward moving through hole set of the moving member.
5. The adjustment-free anti-leakage control valve for nailing gun of any of claims 2 to 4 wherein when the moving member is at the initial position, the front end of the moving member abuts against the rear end of the front sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121056535.2U CN214870318U (en) | 2021-05-18 | 2021-05-18 | Non-adjusting leakage-proof air control valve for nailing gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121056535.2U CN214870318U (en) | 2021-05-18 | 2021-05-18 | Non-adjusting leakage-proof air control valve for nailing gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214870318U true CN214870318U (en) | 2021-11-26 |
Family
ID=78945528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121056535.2U Active CN214870318U (en) | 2021-05-18 | 2021-05-18 | Non-adjusting leakage-proof air control valve for nailing gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214870318U (en) |
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2021
- 2021-05-18 CN CN202121056535.2U patent/CN214870318U/en active Active
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