TW200924919A - Gas combustion type driving tool - Google Patents

Abstract

To prevent the circulation of combustion gas when a combustion chamber is opened. This gas combustion type driving tool is constituted to provide a movable housing 11 between a striking cylinder 7 and a cylinder head 10, to provide the combustion chamber 5 in an openable/closable manner in the movable housing 11, to provide a cylindrical sleeve 14 in the movable housing to form an annular space 15 between the movable housing 11 and the sleeve 14, to form an upper opening 16 and a lower opening 17 to penetrate upper and lower parts of the sleeve 14, respectively, and to circulate a mixed gas of air and fuel gas in the combustion chamber from the lower opening to the annular space 15 and further from the upper opening 16 into the combustion chamber 5, wherein a baffle wall 23a preventing the flow of combustion gas from the annular space 15 to the upper opening 16 is provided between the movable housing 11 and the movable sleeve 14.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas burning type striking tool for hitting a nail such as a nail or a tapping screw. [Prior Art]

In general, a gas-fired percussive tool system, as in the patent document, has a body inside, and a blow-up, a cylindrical-shaped: the movable sleeve is openably and closably disposed at an upper portion thereof' The movable sleeve _, when the combustion chamber is in a sealed state, supplies flammable gas and fresh air to the inside 4'. After the flammable gas and the air are circulated by the fan #, the mixture is ignited and is suddenly ignited. Combustion, the high-pressure gas pressure is applied to the striking piston to perform the knocking of the fastener. After the end of the striking, the 'opening chamber' exhausts the combustion gas, and (4) the lower-knocking action. Further, in the agitation driving of the rotary fan in the combustion chamber, a portion where the airflow is weak and stagnated is formed in the vicinity of the center portion of the lower portion of the swirling fan, and the combustion speed of this portion is formed. Slow down, whereby the explosion of the mixed gas causes incomplete combustion ^ the combustion efficiency may be lowered. Further, since the V-lead and the seal in the operation of the movable sleeve of the combustion chamber are formed on the upper and lower sides of the casing portion, the deviation of the individual parts and the yoke axis u are likely to occur, whereby the movable sleeve of the combustion chamber is actuated. The increase in load or poor sealing may occur. Further, since the size of the movable sleeve in the radial direction is larger than that of the striking cylinder, only this portion protrudes in the front, rear, and left and right directions. Therefore, the size of the movable sleeve 7042-9887-pf 5 200924919 in the bite direction used in the narrow space is a problem in the manner of hitting the knot beside the wall or the like in a narrow space. Further, such a combustion gas drives a knocking machine system, and a gas canister such as a gas container filled with a gas-burning gas is placed in the tool, and a battery as a power source for firing the burning body is attached to the battery. The tool is formed as a portable tool, and the power supply source such as electric power or compressed air is not restrained, and a tapping operation of a knot such as a nail or a pin can be performed. ❹ ❹ In the above-described gas-fired percussion tool, in order to constantly set the combustion pressure, only the fuel gas blown from the gas tank is supplied to the combustion chamber via the metering injection valve after a predetermined amount of leaves θ. Further, in the literature 2, the fuel supply mechanism in the tapping tool is disclosed. [Patent Document 2] Japanese Patent No. 2956〇〇4 However, although there is no problem in the field in which the gas tank and the metering injection valve are close to each other, it is necessary to set the gas in the arrangement of the parts. In the case of isolated locations. In this case, the outlet of the gas tank and the metering spray have the necessity of being connected by the gas line = when the position of the tapping tool is mounted, the outlet is opened, and the internal m system is sent out from the milk tank to the gas pipe. road. Further, in the gas line side, since the air is stored before the gas tank is installed, the gas pressure of the air gas is supplied to the metering unit.

:' Even if the metering injection valve is opened at the time of tapping, the second::SI: is injected into the (four) chamber, it is unable to burn, there is a problem that it cannot be ignited, or the combustion pressure cannot be transmitted due to combustion = king. SUMMARY OF THE INVENTION One or more embodiments of the present invention provide a gas-fired knock

7042—9887—PF 6 200924919 The tool is used to prevent the movable load of the movable sleeve from being in the closed combustion chamber, so that the mixed gas is well=(4) bad, and the good combustion is good. When the combustion chamber is open, the combustion gas can be stirred and stirred. In the case of the above-mentioned embodiment, in the case of the body combustion, the cylindrical movable sleeve of the combustion chamber is opened and closed between the steam heads that slidably receive the striking steam of the striking piston. The partition wall portion is provided inside the movable sleeve, and the annular space portion is formed between the movable sleeve and the partition wall portion. The nr Μ Bn upper opening portion and the lower opening portion are respectively formed to penetrate the upper portion of the partition wall portion and In the lower portion, the mixed gas of the air and the fuel gas in the phase sintering chamber is sent to the annular space portion from the lower opening portion, and is connected to the upper portion. The opening portion is circulated until the mixed gas is scrambled and mixed; and the interference wall of the flow of the combustion gas from the annular space portion toward the upper opening portion of the movable sleeve and the partition portion is provided. According to the above-described gas-fired percussive tool, the closed-air combustion-to-air air and the mixture system of the sputum-contained body are sent from the lower opening portion by the rotary fan provided in the smoldering chamber. The annular space portion is returned to the combustion chamber from the I portion opening portion, so that the mixed gas system is well mixed by the circulation flow. Further, the mixed gas is ignited and burned abruptly, whereby the knot is ejected by the burning force. Thereafter, the movable sleeve is actuated, and when the combustion chamber is opened, the combustion gas is discharged from the lower portion of the combustion chamber to the lower side while fresh air is introduced from the upper portion of the combustion chamber. ^ In the aspect of the movement between the movable sleeve and the partition portion, the movable sleeve is arranged to be movable and obstructed from the annular space portion toward the upper space portion.

7042-9887-PF 7 200924919 Interference wall of the flow of the combustion gas. When the movable sleeve is actuated and the combustion chamber is opened, the combustion gas system in the annular space portion is prevented from flowing to the upper opening portion by the interference wall. Therefore, the combustion gas system is not mixed with fresh air, and the combustion can be often ensured to be good. Further, the interference wall system may be formed to protrude outside the upper portion of the partition wall portion. The interference wall system may be formed on the side of the movable sleeve. The above-mentioned interference wall system may be formed by a reduced portion that reduces the upper portion of the movable sleeve. Further, the present invention provides a gas combustion type, which ensures the maintenance of the basic arrangement structure in the combustion chamber and the valley product of the crucible. t is excellent in operability. According to the above-described embodiment of the present invention, in the gas combustion type tapping tool, the cylinder head is disposed above the striking cylinder that slidably receives the striking piston, and the cylindrical movable sleeve is disposed in the striking cylinder. Between the head and the head, the combustion chamber formed inside the movable sleeve is opened and closed by the movable sleeve. In the closed state of the combustion chamber, the mixed gas is ignited and burned, and the combustion chamber is opened. In the middle, the exhaust and the intake are advanced. The movable sleeve is disposed at an offset position from the rear of the striker. In the gas combustion type tapping tool described above, the movable sleeve is disposed at an offset position behind the striking stop. That is, instead of shrinking the movable sleeve at the front 7042-9887-PF 8 200924919 、 、, it is greatly protruded from the rear, or instead of being narrowed to the left and right, it is greatly protruded from the rear. Therefore, the basic arrangement structure of the movable sleeve is maintained, the size of the inside of the movable sleeve is ensured, and the movable sleeve can be narrowed to the front or left and right. Therefore, because of the knocking of the knot in a narrow place, ample space is obtained, and the workability or operability at the time of the knocking of the corner is excellent. Further, since the accumulation of the combustion chamber does not become small, the "combustion energy does not change", and a sufficient tapping ability can be exhibited. Further, instead of arranging the movable sleeve at an offset position from the rear of the striking rice, the movable sleeve may be disposed at an offset position in the front. The above-mentioned movable sleeve is disposed in a ratio of the offset position of the front side of the striking cylinder, and the basic portion of the movable sleeve is maintained by replacing the degree of protrusion of the movable sleeve to the left and right, and the other side is greatly protruded. The arrangement structure, = the size of the moving sleeve in the radial direction, and the extent to which the movable sleeve can be pulled out at the rear or left and right. The above-mentioned embodiments of the month provide a gas-fired impact tool that automatically removes air from the gas line even if the gas tank and metering injection valve are isolated. In the above-described embodiment of the present invention, in the gas-burning type K: two-charge, the gas tank detachable gas tank accommodating portion of the fuel gas, the fuel gas discharged from the milk tank is only blown out by the amount. The injection valve is connected via the gas line, and the combustion pressure of the mixed gas of the fuel gas and the air blown out from the metering injection valve is ignited, and the knot is ejected, and the tank is stored. When the part is interlocked, the feeding material is stored in the gas, and the juice is placed in the gas injection valve to prepare the gas.

7042-9887-PF 9 200924919 Metering of air removal in the body line The above-mentioned gas is burned to set it. When the gas tank accommodating portion is connected to θ, the gas tank is stored and the metering injection valve is preliminarily operated;;:: the ejector valve actuating mechanism is actuated, and after the actual enemy attack, the inside of the milk pipeline is described. The air is removed even if the gas tank and the metered work wind are not present. Therefore, the knot is tapped and the magnetic w can be configured, since it can be from the initial position. "The body tank is arranged to be separated from the metering injection, and the air in the motor path between the metering injections is discharged. The gas tube may be formed." The method of the juice I injection valve is configured to be sprayed. The degree of movement of the valve actuation mechanism is such that the air displacement body in the metering emulsion line is discharged together with the air, and there is no problem with the remaining fuel gas. ...... Remaining in the gas pipeline ❹ The above-mentioned metering nozzle system may have an electromagnetic reading mechanism for opening and closing the fuel gas juice summer chamber, and the above-mentioned counting mechanism may also include: detecting device, detecting Second, the injection valve is located in the accommodating portion; and the control ', D + amount injection valve is detected by the sputum, and is energized to the above; and the amount 2 2: the metering injection valve from the detection of the farm is controlled several times. The magnetic valve mechanism 'in the gas combustion type tapping device described above, the metering chamber for metering the injection 阙 崎 体 body and the solenoid valve mechanism for opening and closing the metering chamber (4) actuation mechanism system," based on the inspection body t

7〇42-9887-PF 10 200924919 The control device is energized to the solenoid valve mechanism of the metering injection valve, and the metering injection valve is opened and actuated from the gas line to the detection signal of the detecting device of the storage unit. The air in the metering injection valve is discharged from the vane injection valve. When the energization operation is repeated several times, the air in the gas line is completely removed, and the number of actuations of the energization operation differs depending on the diameter or length of the gas line. The control device may be configured to open the metering injection valve several times when the battery that is detachably provided in the gas combustion type - tapping tool is attached. The control device is configured to open the metering injection valve several times when the battery that is detachably provided in the gas combustion type tapping tool is installed, even after the gas tank is installed and the battery is mounted. The air in the gas line can be removed. Even when the battery is mounted and the gas tank is not mounted, the metering injection valve is opened, but the actual damage is not. Other features and effects will be apparent from the description of the embodiments and the appended claims. [Embodiment] Hereinafter, exemplary embodiments of the present invention will be described with reference to the drawings. [First exemplary embodiment] In the drawings of Figs. 1 and 2, the symbol; i is the body of the gas burner type. In this body i, the handle 2 and the magazine, not shown, are connected, and the striking piston/cylinder mechanism 4 and the nose 邛6 which is used to punch the nail are provided. The tip end portion 6 is open at the front end of the magazine. Strike piston/cylinder mechanism 4 series, the striking piston 8 is slidably received 7042'9887-Pf 11 200924919 is accommodated in the striking cylinder 7, and the spoiler & the body is combined with the driver 9 Below the piston 8. In the upper part of the L > mechanism, the piston/cylinder is played as the combustion chamber 5 is formed. The combustion chamber has 5 series, μ丄, 1 t Λ , 3 series, and the movable end sleeve between the upper end surface of the striking piston δ and the steam head 10 disposed at the upper portion of the striking cylinder 7 4 # D The crucible is formed, and the movable sleeve π is moved to the lower portion of the lower portion of the combustion chamber 5 by the amine n#. The upper portion of the combustion chamber 5 is connected to the atmosphere, as shown in Fig. 2, by moving the crucible. The upper and lower ends of the upper movable sleeve 11 are sealed such that the cylinder head 10 and the striking cylinder 7 are sealed, and the sealed combustion chamber 5 is formed. The movable sleeve 11 is a central π plus, upper _, σ ί 邛 11 a is a large diameter, the upper JJ b is a small diameter formed by a cylindrical shape, and the Λ member is connected via a link member (not The figure is connected to the contact member 12, and is biased by the spring to the open side by the wet stalk. The contact member 12 is slidably disposed up and down along the tip end, and the lower end 1 2a is protruded from the tip end portion 6 and is hunted by pressing the lower jaw and the tip end portion 6 The hoist and the keeper are 'clamped, and in conjunction with this, the contact member 12 is relatively moved upward, and the movable sleeve U is moved upward by the coupling member. Thus, as in Fig. 2, 祧 is formed in the closed combustion chamber 5. Conversely, by separating the tip portion 6 from the smear-sensitive material, the contact member is relatively moved to the lower side, and the (4) weighing member 12 is said to be η*. Below, the upper and lower ends of the movable sleeve n n κ are sealed off and simmered until the 5 series is opened to the atmosphere. ^ Next, the inner portion 14 of the movable sleeve 上述 is disposed. Thereby, the partition annular space portion 15 of the 'S' is formed. Between the upper part 2 and the partition wall portion 14, the wind upper opening portion 16 and the lower opening portion π

7042—9887-PF 12 200924919 are formed to penetrate the upper portion and the lower portion of the partition wall portion 14, respectively. In the above cylinder head! On the other hand, the gas tank ejector nozzle 18, which will be described later, is connected to an ignition plug for igniting and combusting the mixed gas (not shown). In terms of the cylinder head!, the motor 2 is installed and is turned on. On the axis side, it will be shot [[嫉 h h & burning fuel gas in 5 and the air in the combustion chamber 授, in the fire palace to see the ten (10) to 5, the resulting air-fuel ratio is now people

A rotary fan 21 for gas is provided. D Next, the operation of the gas burning type nailing machine of the above configuration will be explained. In the first place, when the nail is punched, the movable ferrule 11 is moved upward by interlocking the front end of the contact member 12 with the hitting member. As a result, as shown in Fig. 2, the closed combustion chamber 5 is formed, the combustible fuel gas injection nozzle 18 is supplied into the combustion chamber 5, and the rotary fan 21 is rotated to be injected into the fuel gas system in the combustion chamber 5 and The air is blown downward, and is circulated from the partition opening portion 17 to the ring shape 15 and is circulated from the upper opening portion i 6 into the combustion chamber 5 to be mixed and mixed as a predetermined air-fuel ratio (four) gas. . Further, when the operation lever (four) lever 24 (refer to Fig. 1) is pulled, the ignition gas (ignition is ignited by the ignition plug (not shown) is rapidly burned. The combustion pressure occurring at this time acts on the striking piston 8' in the striking cylinder 7 to drive the striking piston 8 in a shocking manner, and by being combined with the -p I of the striking hammer 8, the lower side active member 9' will The staples that are fed into the tip end portion 6 are struck out into the struck material. When the tapping is completed, the temperature in the combustion chamber 5 is rapidly lowered, and the space above the striking piston 8 which is expanded until the striking cylinder 7 becomes a negative pressure because the pressure difference from the atmospheric pressure from the bottom is restored to the original

7042-9887-PF 13 200924919 The grain product, the striking piston 8 series, as shown in Fig. 1, is moved back to the top dead center, and the nailing machine is separated from the struck material because the contact member 12 relatively moves to the lower side. Therefore, the movable sleeve n is also moved to the lower side, the combustion chamber 5 is opened to the atmosphere, and fresh air is introduced, and the combustion gas system in the combustion chamber 5 is discharged from the exhaust hole 22 below the body. To ^ Department's next move is prepared. Further, between the movable sleeve 11 and the partition wall portion 14, when the movable sleeve 11 is moved downward, an interference wall that blocks the flow of the combustion gas from the annular space portion 15. toward the upper opening portion is provided. Further, as shown in the second and second figures, the interference wall 23a is from the partition wall portion! The upper outer peripheral surface of 4 is formed in a continuous cylindrical shape in a horizontal flange shape. The interference wall 23a is disposed directly below the upper opening portion 16, and the large diameter portion 11a of the movable sleeve 心 when the heart is closed is formed relatively. When the combustion chamber 5 is sealed, as shown by the arrow in Fig. 2, between the interference wall 23a and the large sleeve of the movable sleeve u, the gas flow of the air and the fuel gas is used. A sufficient gap is formed, and the aerated system circulates smoothly, and its flow is not hindered. In contrast, when the movable sleeve 向下u moves downwards, when the combustion chamber is opened, as shown by the arrow in Fig. 1, the interference wall 23a is opposed to the small diameter portion lib of the movable sleeve 11, and the interference wall 23a and the small diameter The gap between the 1 lb is not # | ll 糸 is not ten small. Therefore, the flow from the annular intermediate portion 15 toward the upper opening portion 16 J / tCi is suppressed, and the circulating flow of the combustion gas does not occur.囡 , „ ”, 赏王 Therefore, the combustion gas system is not mixed with fresh air, and the combustion can always be ensured in a good state. Further, the interference wall of the partition U is as shown in Figures 3(a) and 3(5).

In the outer peripheral surface of the partition wall portion 14 itself, the same portion as the interference wall 23a may be protruded in a spider shape as shown by the symbol 23b of the second block portion 14b. ^ Occasionally, the flow in the upward direction of the flow in the combustion chamber 5 in the lower direction of the mixed gas in the combustion chamber 5 is inclined along the interference wall: the portion 25 is guided to the 'mixed gas circulation system than the above The occasion of the ι map is smooth. Next, the above-mentioned interference wall system 'is not formed in the partition wall portion 14, but as shown by the symbols of the fourth (4) and fourth (b) diagrams, is formed inside the upper inner peripheral surface of the upper (four) cylinder 11 It is also OK. This interference wall 23c

In a state in which the combustion chamber 5 is sealed, the movable sleeve u is moved downward and in a state of being opened, in a state corresponding to the upper portion of the upper C opening portion of the partition portion i4, in the state corresponding to the partition wall portion 14. In the state in which the combustion chamber 5 is sealed, the interference wall 23 and the partition wall portion 14 are sufficient for the flow of the mixed emulsion of air and fuel gas. The gap is formed 'the mixture system is smoothly circulated, and its flow is not hindered. For this, the movable sill 11 is moved downward, and the combustion chamber 5 is opened, because the interference wall 23c is moved to the upper portion corresponding to the partition wall portion 2 Since the lower portion of the opening portion 16 is such that the gap between the interference wall 23c and the partition wall portion 14 is extremely small, the flow of the gas from the annular space 胄15 toward the upper portion is hindered, and the combustion gas is blocked. The eclipse does not occur. Therefore, the combustion gas system is not mixed with fresh air, and the combustion is always ensured in a good state. Moreover, the above-mentioned interference wall system, such as the symbols of Figures 5(a) and 5(b) 7042-9887-PF 15 200924919 2 The # may be formed by reducing the upper inner peripheral surface of the movable sleeve i 。. That is, the movable sleeve η is a reduced diameter of the central portion and the lower portion 11a having a large diameter and a small diameter at the upper portion, and is a disturbing wall. The small-diameter portion Ub is in a state in which the combustion chamber 5 is sealed, and corresponds to the upper portion of the upper opening portion 16 of the partition wall portion 14. (5) The position "on the combustion chamber 5 is opened" In the state in which the upper portion of the opening portion 16 of the partition wall portion 14 is provided, when the combustion chamber 5 is sealed, the small-diameter portion and the partition portion 14 are formed as shown in Fig. 5(a). Between, due to the mixed gas of air and fuel gas, the field, the ancient, the ^, the gas system is smoothly circulated! Fully _ forming 'mixed', the melon movement is not hindered. For this, the movable sleeve ^ down When the combustion chamber 5 is opened, as shown in Fig. 5 (8), the Ub is moved to a position corresponding to the lower portion of the upper opening portion 16 of the partition portion 14, so that + % is not appropriate, f• And the gap between the partition wall U and the second. Therefore, since the flow of the gas toward the upper opening portion is blocked from the annular space portion, the circulation flow of the combustion gas does not occur, and the combustion gas system does not mix with the fresh air. The shape of the interference wall of the sleeve = Γ is limited to Above. With the movable portion 5, the upper opening portion of the partition portion may be widened and narrowed between the movable sleeve and the partition portion. 07 upper of = Although the interference wall is formed as a continuous cylindrical shape on the circumferential surface of the partition wall or the circumferential surface, the intermittent cylindrical shape may be used. In a typical embodiment, although the gentleman's face n W 牡 music # ϋ ^ 8H, the movable sleeve of the movable sleeve up and down can be opened and closed by the rotation of the movable sleeve. also,

7〇^2-9887-PF 16 200924919 In the first exemplary embodiment, although the rotary fan is circulated in the combustion chamber, a supercharger or the like may be used. x, in the above embodiment, when the combustion chamber is opened, although the gap between the π private scorpion wall and the moving sleeve or the partition wall is made very small, it can be set with substantially no gap. . [Second exemplary embodiment] In Fig. 6, reference numeral 201 denotes a body of a gas burning type nailing machine. In the case of the body 201, the handle 2〇2 is connected to the magazine 2〇3, and the φ striking piston/cylinder mechanism 2〇4 and the tip end portion 2 to which the nail is struck are provided. The tip end portion 206 is open at the front end of the magazine 203. The striking piston/cylinder mechanism 204 is slidably received in the striking cylinder 207 by the striking piston 2〇8, and the driving member 2〇9 is integrally coupled to the lower side of the striking piston 208. In the upper part of the striking piston/cylinder mechanism, the combustion chamber 2〇5 is formed in a general configuration. The combustion chamber 205 is formed by an upper end surface of the striking piston 2〇8 and an annular movable sleeve 211 disposed between the striking cylinder 2〇7 and the upper portion of the cylinder head 21〇. The movable sleeve 2 is moved to the lower side as shown in Fig. 6, and the upper portion of the combustion chamber 2〇5 is connected to the atmosphere. As shown in Fig. 7, 'by being moved to the upper side, the closed combustion chamber 2〇5 is formed. It is composed. The movable sleeve 211 is coupled to the open side by a spring 2 through a link member (not shown) and the contact member 2 Ϊ 2 . The contact member 212 is slidably provided up and down along the tip end portion 206, and the lower end thereof protrudes from the tip end portion 206. Further, by pressing the lower end and the tip end portion 206 together to the struck material, and in conjunction therewith, the contact member 212 ^ 42'9887-PF 17 200924919 the rod member moves the movable sleeve 211 relative to the upper portion Fang, via the top. Thereby, as shown in Fig. 7, the sealed combustion chamber 2〇5 is formed. Conversely, by separating the tip portion 206 from the struck material, the contact member is relatively moved downward, and the link member and the movable sleeve 2 are moved to the lower side by the spring 213, and the combustion chamber 2〇5 Being opened to the atmosphere. ❹ In the cylinder head 210, an injection nozzle 214 that communicates with a gas tank, which will be described later, and an ignition plug us, which is ignited by the mixed gas and is combusted, are disposed. Further, in the cylinder head 210, the motor 216 is provided, and in the output shaft thereof, the fuel gas injected into the combustion chamber 2G5 and the air in the blast chamber 205 are mixed, and the combustion 胄m is generated. A swing fan 217 for the air-fuel ratio mixed gas is provided. Further, the ignition plug 215 is connected to the battery 218 attached to the rear end of the handle 2〇2. Next, the operation of the gas burning type nailer having the above configuration will be explained. First, when the nail is ejected, the front end of the contact member 212 is pressed against the struck material to move the movable sleeve 211 upward. As a result, as shown in Fig. 7, the sealed combustion chamber 2〇5 is formed, the combustible fuel gas is supplied from the injection nozzle 214 into the combustion chamber 205, and the rotary fan 217 is rotated to be injected into the combustion chamber 205. The gas system and the air in the combustion chamber 2〇5 are stirred as a mixed gas of a predetermined air-fuel ratio. When the operation lever shank 220 is pulled, the mixed gas is ignited by the ignition plug 215, and the combustion is rapidly performed. The combustion pressure occurring at this time acts on the striking piston 208 in the striking cylinder 2〇7, and the striking piston 208 is driven to be driven by the active member 2 〇9 of the lower side of the striking piston 2 〇8 by the knot & , the nail that is to be supplied to the 7042-9887-PF 18 200924919 蠡A end portion 206 is knocked out until the β-knocking in the hammered material is completed, because the temperature in the combustion chamber 205 drops rapidly and expands to the blow. The space above the striking piston 208 up to the cylinder 207 becomes a negative pressure, and the striking piston 208 is returned to the top dead center as shown in Fig. 6 because the pressure difference from the atmospheric pressure from below is restored to the original volume. Further, when the nailing machine is separated from the struck material, since the contact member 212 relatively moves downward, the movable sleeve 2U also moves to the lower side of the crucible, and the combustion chamber 205 is opened to the atmosphere, and enters with new air. The next move is prepared. Further, in the above nailing machine, a fuel gas supply device that supplies fuel gas to the injection nozzle 214 is provided. This fuel gas supply device is a gas tank 222 that is detached from the gas tank accommodating portion 221, a metering injection valve 224 that is connected via the gas line 223 and the gas tank accommodating portion 221, and a metering injection that preliminarily operates the metering injection valve 224. The valve actuation mechanism is constructed. The gas tank accommodating portion 2 is provided between the handle 2 〇 2 and the shackle 2 〇 3 as shown in Fig. 6 and Fig. 7, and the gas tank 222 is inserted and removed from the rear to be attached and detached. In the front end of the gas tank accommodating portion 221, the receiving portion 226 of the gas discharge port 225 of the gas tank 222 is formed, and the lid 227 is disposed on the rear end side. When the gas tank 222 is housed in the gas tank accommodating portion 221 and the closing lid 227, the gas discharge port 225 of the gas tank 222 is pressed into the receiving portion 226, and the fuel gas charged inside the gas tank 222 is ejected. It is composed. The rolling body line 2 2 3 is disposed along the rear portion of the striking piston/cylinder mechanism 2 amp & the one end is attached to the end opening of the receiving portion 226, and the other end is 7042'9887-PF 19 200924919 The injection valve 224 is open. In the ejector valve 224, since the fuel gas discharged from the gas tank 222 is only blown out in a predetermined amount, as shown in Fig. 8, the piping 230 is formed in the inner central portion of the casing 228. The casing 228 is formed by a bottomed cylindrical body 231 having an opening at the center, an end plate 232 on the injection nozzle side of the cylinder head 210, and an end plate 233 on the side of the gas line 223. Further, the duct 230 is formed continuously in association with the respective centers of the end plates 232 and 233 and the intermediate body 234 disposed between the end plates. The intermediate 234 is supported and fixed by a seal ring 235 at both ends. The metering chamber 236 is provided on the discharge side end plate 232 of the line 230. The volume of the metering chamber 236 is formed by the amount of combustion gas required to be filled only once. The flexible valve plate 237 is disposed inside the measuring chamber 2%, the end portion of the valve plate 237 is fixed to the casing m, and the magnetic sealing material 238 is disposed at the center portion of the through hole 239. The seal 2 is nearby. Further, the opening edge of the thin meat is formed in a cylindrical shape so as to be in close contact with the sealing member 238 by sandwiching the measuring chamber 236 between the opening end portions 240 and 241 of the opposing tube 23'. Further, in the case of the s ten-injection valve 224, the solenoid valve mechanism for opening and closing the valve chamber 237 to operate the measuring chamber 236 is provided. In the solenoid valve mechanism, the intermediate body 234 is used as a core, and the structure around the core is wound around the core 242. Therefore, as shown in Fig. 9, when the coil (10) is energized, the magnetic force generates, by the magnetic force, the sealing material 238 of the valve plate 237 is pulled to the vicinity, and the metering crucible 236 is opened to the nozzle. When the electric current is interrupted, the valve plate 237 is actuated by the inherent elasticity, also in the original position, 7042-9887-PF 20 200924919, which is 'blocking the passage Mo connected to the injection nozzle 214. ❷ Next, the metering injection valve actuation mechanism is configured such that the gas cylinder 222 is housed in the gas tank housing portion 221 in conjunction with the gas tank 222, and the metering injection valve 224 is preliminarily operated to bring the gas line 223 into operation. The air inside is removed. Here, the detection device 243 that detects the gas tank 222 is mounted on the storage chamber 以及, and the detection device 243 based on the detection device 243, energizes the solenoid valve mechanism, and the metering The control unit 244 is controlled by the opening and closing operation several times. The detecting device 243 is constituted by an actuating lever 245 slidably provided at the front end of the gas tank accommodating portion 221, and a microswitch 246 which is provided in contact with the actuator #245. The actuating lever 245 is normally pressed by the magazine 247 and is separated from the microswitch 246. However, when the gas canister 222 is stored, the breast canister 222 is pushed out, and the microswitch 246 is pressed to be actuated. The shut-off circuit is provided in the control device 244, the control circuit system and the micro-opening == are connected to the battery 218 and the metering injection valve m, and the detection gas tank (2) ^ electric = action 'based on the detection signal output from the micro-switch 246 is: The above-described solenoid valve mechanism ' controls the above-described measuring chamber 236 to the injection nozzle 214 several times. And the distance between the 50th injection valve 224 and the gas tank 22? The measuring chamber "R-π " 31 body tank is long, and the gas above the valley is stored in the gas pipeline once open. Because the gas line 223 cannot be discharged during the release operation, the control 奘罟9 ^ ^ „ 2 “I overall row, set 244 system corresponds to the gas line 223 > gas line? The two rolling of the cylinder is set like the opening of the number X. Therefore, the number of movements is different from the diameter or length of the milk line 223 by the name axis >.

7042-9887-pF 21 200924919 Further, after 222, a gas tank is installed. In this case, since the battery 218 is detachably provided, the battery 218 is also considered. ❹

When the control device 244 is detachably attached to the battery 218 of the gas burning type knocker _, the metering injection valve 224 is opened several times. Therefore, the same effect as described above can be obtained when the gas canister 222 is mounted and the battery 218 is mounted. Further, even when the battery 218 is mounted and the gas tank 222 is not mounted, the metering injection valve 224 is opened, but the actual damage is not. According to the configuration of the above-described breaking tool, the gas injection tank 222 is placed in the gas tank accommodating portion 221, and the metering injection valve actuation mechanism is actuated to preliminarily operate the metering injection valve 224 to operate the gas line 223. Gas removal 'The empty rolling already in the gas line 223 does not exist at the time of actual tapping. Thus, the gas canister 222 can be arranged in a free position isolated from the metered injection valve 224 since the junction can be tapped from the initial position even if the gas canister 222 and the metering injection valve 224 are disposed apart. The ten-quantity injection valve actuation mechanism is configured to activate the above-mentioned calculations θ and '闽2 2 4 by at least the same amount of air discharge as the volume within the gas tube = 223, and sufficient fuel and air are discharged together. The so-called air does not remain in the gas line 223 as necessary. '°°Siliary injection valve 224, a metering chamber 236 having a fuel gas, and a solenoid valve mechanism that opens and closes the metering chamber 236, and the metering valve is operatively misplaced #', 'because it is based on being supplied from the detection gas tank 222 The detection signal of the storage unit, the detection signal of the 丨π 々 device 243, the control device 244 is energized to the solenoid valve mechanism of the metering valve 224, and the metering injection valve

7〇42-9887-pF 22 200924919 224 is open, so the air sent from the gas line 223 to the metering injection chamber 224 is discharged from the metering injection valve 224. When this energization action is repeated several times, the air in the gas line 223 is completely removed. [Third Exemplary Embodiment] In Figs. 10 and 11, the symbol 301 indicates the tool body of the gas burning type tapping tool (nailing machine). In the case of the tool body 3〇1, the handle 302 is connected to the magazine 303, and internally, the combustion chamber 3〇4 打击 and the striking piston/cylinder mechanism are provided. At the lower side of the tool body 3〇1, a tip end portion 305 which is driven by a nail is provided. Further, in the rear portion of the tool body 3〇1, the accommodating portion 3〇7 of the gas container 3〇6 of the fuel gas is provided. . The striking piston/cylinder mechanism slidably receives the striking piston 3〇9 into the striking cylinder class β, and the driving member 31 is slidably coupled to the lower side of the piston 309. Further, the upper portion of the striking cylinder 308 is extended, and the upper portion of the cylindrical partition portion 311 _ 丨 丨 is a cylinder head attached to the upper portion of the tool body 301. The lower side of f5 312 is combined with the upper side. Further, the upper and lower portions: the surface openings 313 and 314 are formed in the partition wall portion. The second cylinder head 312 is connected to the gas container 306, and the burner A 3151 plug 316 and the rotary fan 317 are connected. The ignition plug 316 is used in the combustion chamber 3. The gas fuel and the air in the combustion chamber = gas are ignited for combustion. In addition, the rotary air is mixed with the oxygen fuel and the air, and the front end of the rotary fan 31 7 is used. The gap between the middle moon J舳 and the partition wall portion 311 disposed in the wall portion 3U is reduced by 7042-9887-'Pf 23 200924919', and the position of the rotary fan 317 is disposed in the partition wall portion 311. Between the upper opening portion 313 and the lower opening portion 314. It is a drive motor of the rotary fan 317. Further, in the upper portion of the striking cylinder 308, the movable sleeve 320 constituting the combustion chamber 3〇4 is disposed. The movable sleeve 32Q is formed in a cylindrical shape, and is slidably disposed in the vertical direction to strike the steam red 3Q8 and the cylinder head 312. Further, as shown in Fig. 10, when it is moved downward, it is formed in the movable sleeve ❹ The combustion chamber 3〇4 inside the cylinder 320 is opened, as shown in Fig. 2, and when it is moved upwards, the closed combustion chamber is formed in the interior of the movable sleeve 32 (). That is, the periphery of the cylinder head 312 is formed in a circular shape, and the upper 0-ring 321 is provided in the above peripheral edge. x is an eccentric annular sliding portion formed on the outer peripheral portion of the upper end of the striking cylinder 08, and the opening groove 319 is formed at a certain interval in the lower portion of the annular sliding portion 322. The movable sleeve 320 is formed of a tubular member ′ having a larger diameter than the striking cylinder, and the movable sleeve (four) is disposed at an offset position offset from the rear of the striking cylinder 8. In other words, the movable sleeve is replaced by a smaller portion that protrudes in the front and is greatly protruded from the rear. The small-diameter portions 323 and 325 which are coaxial with the annular sliding portion 322 in the upper and lower portions of the movable sleeve 320 are formed, and the projections 324 are formed at a predetermined interval in the upper end of the upper small (four) milk. The relationship between the adjacent dogs and the "24" becomes a space. Further, in the inner circumference of the lower small-diameter portion milk, the lower jaw ring 326 is circumferentially provided.

7042-9887-PF 24 200924919 The inner surface of the upper small diameter portion of the upper reverse "T movable sleeve 3 2 , is slidably disposed on the upper 0-ring 321 of the end surface of the cylinder head 312, and the movable sleeve The lower jaw ring 326 of the lower small diameter portion of the 320 is slidably disposed outside the annular sliding portion 322 of the striking cylinder 308. According to the above configuration, the movable sleeve 320 is moved upward as shown in Fig. 1 by the upper 0-ring 321 and the lower 〇 ring 326, and the combustion chamber 3〇4 is sealed to be in a sealed state. On the other hand, when moving downward as shown in FIG. 11, the sealing system of the upper 〇 ring 321 according to the cylinder head 312 is released, and the upper portion of the combustion chamber 304 communicates with the space between the protrusions 324, and is opened to external. Similarly, the seal of the lower jaw ring 326 of the movable sleeve 320 is also released, and the lower portion of the combustion chamber 304 communicates with the opening groove 319 of the annular sliding portion 322 of the striking cylinder 3〇8 and is opened to the outside. Further, the partition wall portion 311 is configured such that the combustion chamber 3 of the central portion is cut and the combustion chamber 3〇4b outside the partition portion 311 is formed. Further, the movable sleeve 320 is coupled to the contact member 327 which is slidably provided at the tip end of the tip end portion 305 via a link member (not shown). = The contact member 327 is elastically biased as it protrudes from the front end of the tip end portion 305. Therefore, the kick-off π ig WV Π* four-horse contact member 3 2 7 is pushed in and pushed upward as shown in Fig. 10, so that it is moved upward via the flail member and the movable sleeve 320, as shown in Fig. 10. The closed combustion chamber is constructed. Conversely, when the tip end portion 305 is separated from the struck material, as shown in Fig. 11, since the contact member 327 is moved to the original position, the movable sleeve is also moved downward, and the combustion chamber 3〇4 is opened. Next, the operation of the nailing machine with the above configuration will be described (4). First 7042-9887-PF 25 200924919

First, when the tip portion 3〇5 is strongly pressed against the struck material and the tool body 301 is relatively moved upward during the tapping of the nail, the movable sleeve “o” and the contact member 327 move together upward. As shown in Fig. 1, the closed combustion chamber 3〇4 is formed by the upper 〇 ring 321 provided on the cylinder head 312 and the lower 0-ring 326 provided on the outer periphery of the upper end of the striking cylinder 308. The flammable gas is injected from the injection nozzle into the combustion 胄3〇4, the rotary fan 317 is rotated by the motor, and the flammable gas and the air are mixed and mixed, and then the pull handle 329 is pulled. #Ignition plug 316 ignites the mixed gas. The burning piston 3〇9 is driven, and the nail supplied to the tip end portion 3 0 5 is driven out. In contrast, after the tapping is completed, the striking piston 3〇9 is returned, and moreover, by The contact arm is separated from the struck material, as shown in Fig. 2, the movable sleeve 320 is moved downward, and the seal is released according to the seal of the upper crotch ring 321 and the lower crotch ring 326, and the combustion chamber 3〇4 is Open, from the upper open ditch 'fresh air into the people 'From the lower opening 帛, the combustion gas is exhausted, and the next tap is prepared. As described above, since the center of the movable sleeve 32 配置 is disposed at an offset position rearward of the center of the striking cylinder 308, The extent to which the movable sleeve 320 protrudes forward is greatly reduced, and the rear side is greatly protruded, and the basic arrangement structure of the movable sleeve 320 is maintained, and the movable sleeve 32 is large and the movable sleeve 320 can be protruded forward. Therefore, since there is ample space even in the 328 or the narrow side of the wall as shown in the figure, the nail can be struck, so the workability or operability of the corner tapping is excellent. Since the volume of the chamber 3〇4 is constant, it is possible to sufficiently confirm the necessary combustion energy of the 7042-9887-PF 26 200924919 when the nail is struck. Further, since the cylindrical partition portion 311 is provided to the striking cylinder 3〇8 In the extension of the upper end, the openings 313 and 314 are respectively formed in the upper and lower portions of the partition wall portion 311. Therefore, from the central portion 304a of the combustion chamber 304 through the lower opening portion 314 toward the partition wall, the inside of the combustion chamber 3〇4 Department 311 The lower portion of the outer combustion chamber 304b is further flowed from the lower portion of the outer combustion chamber 3 toward the upper portion, and the upper portion of the outer combustion chamber 3〇4b flows through the upper opening portion 313 toward the central portion of the combustion chamber 304. The road is formed as an arrow. Therefore, when the gaseous fuel and the air to be supplied to the combustion chamber 3〇4 are mixed and mixed by the central rotary fan 317 of the combustion t304, the mixed gas system does not stay along the above-described flow path. Since the flow is smooth, the mixing and mixing efficiency is good, and therefore, the mixed gas can be surely burned. In addition, in the tenth embodiment, the configuration in which the movable sleeve 32 is moved up and down and the combustion chamber 304 is opened and closed is explained. However, for example, a configuration in which the movable sleeve is rotated and opened and closed between the combustion chamber and the movable sleeve may be employed. χ 在 在 在 在 在 在 在 ❹ ❹ ❹ ❹ ❹ ❹ ❹ ❹ ❹ ❹ ❹ ❹ ❹ ❹ ❹ ❹ ❹ 308 The striking cylinder block and the steam red head portion 312 may be fixed to the tool body 3〇1 = the casing side without providing the partition wall portion 311. And a suction fan μ?. Further, as shown in Fig. 12 and Fig. 13, the main arrangement structure of the movable sleeve is maintained by replacing the degree of protrusion to be large in the front, and the size of the movable sleeve is ensured. Set the same as 32. The degree of protrusion to the left and right becomes smaller. Because there is plenty of space for the knot of the knot even in this narrow place, the corner

7042-9887-PF 27 200924919 The operability is excellent when you tap. Your doctor. ^ ^ ^ π is called 1 close to the snoring cylinder, and the 疋 is improved. Further, the symbols in Figs. 12 and 13 indicate the same members as those in the tenth and nth drawings. Although the present invention has been described with reference to the particular embodiments of the present invention, it will be understood that "This application is based on a Japanese application filed on August 7, 2007 (曰本特愿2〇〇7_2〇5413), 〇〇August 7Η" This patent application (曰本特愿2.〇 7_2)), and 2.. = 曰 曰 凊 凊 凊 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本 日本A gas burning type tapping tool for a general nail or a tapping screw is used. The nail is broken. [Simplified illustration of the drawing] Fig. 1 is a longitudinal sectional view of a gas burning main portion of the first exemplary embodiment; The main drawing 2 is a longitudinal cross-sectional view showing the above-mentioned main part of the state in which the combustion chamber is sealed; the main 3 (a) drawing of the Iso is the main part of the combustion chamber in which the interference wall is closed. An enlarged sectional view of the main part of the 丄 丄 野 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The expanded profile of the search for the machine, the fourth (b) is the king of the open

7042-9887-PF 28 200924919 Partial enlarged sectional view; Section 5 (a) shows an enlarged sectional view of the main part of the above-mentioned combustion chamber when the interference wall is in other forms, the fifth part (= the main part of the release time) An enlarged cross-sectional view of the gas burning type nailing machine of the sixth and the first and third examples; the household pot, the table * in the above (four) towel , the diverticulum is (4), the longitudinal section of the state of the gas canister; the first figure of the milk is the enlarged section of the Dong injection ;; the figure is the enlarged section of the above-mentioned metering injection valve 1 0 is a diagram showing the main part of the =i and __# μ;; example of a gas-fired injection machine; *., 钇 to the longitudinal section of the closed state, Figure 11 shows When nailing, the longitudinal section of the nailing machine is burned; ', the upper 12th figure which is in an open state shows a longitudinal section of the gas part of the other embodiment, and the combustion chamber is sealed: a smashing nailing machine Longitudinal section of the main and state; in time, the combustion chamber becomes an open longitudinal section of the nailing machine [Description of Reference Numerals 1 main body member, a handle 2, state

7〇^2-9887-PF 29 200924919 4 striking piston/cylinder mechanism, 5 combustion chamber, 6 tip end, 7 striking cylinder, 8 striking piston, 9 active parts, 10 0 cylinder head,

11 movable sleeve, 11a lower portion, lib upper portion, 12 contact member, 12a lower end, 13 gas tank, 14 partition wall portion, 15 annular space portion, 16 upper opening portion, 17 lower opening portion, 18 injection nozzle, 20 motor, 21 Rotary fan, 22 vents, 23a, 23b, 23c interference wall, 24 4 lever lever, 203 shackle,

7042—9887—PF 30 200924919 205 combustion chamber, 222 gas tank, 223 gas pipeline, 224 fuel injection valve, 243 detection device, 244 control device, A gas combustion type percussion tool, Win 304 combustion chamber, 308 blow cylinder, 309 strike piston, 320 movable sleeve.

7042-9887-PF 31

Claims (1)

200924919 X. Patent Application Range: 1. A gas-fired percussive tool, comprising: a movable sleeve 'provided between a striker that slidably receives a striking piston and a cylinder head disposed above the striking cylinder, Opening and closing the combustion chamber; the cylindrical partition portion ' is disposed inside the movable sleeve, and forms an annular space portion with the movable sleeve, wherein the upper opening portion and the lower opening portion are respectively formed through the upper portion and the lower portion And the interference wall is provided between the movable sleeve and the partition wall portion, and blocks the flow of the combustion gas from the annular space portion toward the upper opening portion. 2. The gas-fired striking tool according to claim 1, wherein the interference wall system is protruded from the outside of the partition wall portion. f. f 5^· π < Rolling body burning type tapping tool' wherein the above-mentioned interference wall system is formed on the inner side of the movable sleeve by the protrusion of the protrusion.町上4. For the gas-fired knocking work described in the first paragraph of the first, and the above-mentioned interference wall system, the above-mentioned movable sleeve is reduced by ^ ♦ The reduced portion is formed. 5. A gas-fired percussion tool, comprising: a gas tank of a fuel gas, a gas tank accommodating part, a gas tank accommodating part; a metering injection valve, and the above-mentioned teaching 4 breast tank accommodating part, #体罐罐The discharged fuel gas is only operated by ", the rolling, and the metering injection valve actuating mechanism, and the fish/rolling can is stored and disposed in the gas 7042-9887-PF 32 200924919. The metering spray (4) is prepared to remove air from the moving body pipeline. And (4) the gas-fired knocker described in item 5 of the patent scope" t the above-mentioned metering spray (four) actuating mechanism for actuating the metering injection valve to the extent that the air in the gas line can be discharged. The gas-fired striking tool according to claim 5, wherein the metering injection valve system is composed of a fuel gas metering chamber and a solenoid valve mechanism that opens and closes the metering chamber; a detecting device for detecting that the gas canister is mounted in the accommodating portion, and a control device for controlling the plurality of soils in the measuring chamber based on the detection of the second detecting signal from the detecting device and being energized to the electromagnetic valve mechanism In the case of the patent application scope, the battery of the above-mentioned control device is a burn-on tapping tool. The gas-fired knocker described in the item is detachably installed in the gas burning. When the 'measurement room is opened several times as 7042-9887-PF 33