TW200948555A - Nail driver - Google Patents

Abstract

A nail driver is provided with an impact cylinder, an impact piston mounted in the impact cylinder so as to be slidable in the vertical direction, a movable sleeve mounted in the upper part of the impact cylinder and vertically moving to open and close a combustion chamber, and a contact member moving upward when pressed against a material to be driven and moving the movable sleeve upward to tightly close the combustion chamber. The contact member is constantly spring-urged in the nail driving direction independent of the movable sleeve.

Description

.200948555 • VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a method of preventing a member of a guide pin from being detached from a material to be driven when it is lifted by a reaction when the nail is driven. Holding the nailing machine 0 [Prior Art] Generally, in the gas burning type nailing machine, the striking piston is disposed so as to be slidable in the vertical direction in the striking cylinder disposed in the body. By moving the movable sleeve provided on the upper portion of the striking cylinder up and down, the striking cylinder abuts and separates the cylinder head above it, and the combustion chamber can be opened and closed. In a sealed combustion chamber, a gas mixture system in which a combustible gas and air are stirred and mixed by a fan is ignited by an ignition plug disposed in the cylinder head, and is rapidly burned. This high-pressure combustion gas is used for the above-described striking piston, and the striking piston is driven by impact. The driver is coupled to the lower side of the beta striking piston to drive the nail from the front end (_) portion (refer to the patent document. Further, in the outer side of the front end portion, the contact member is slidably disposed. The lower end of the contact member is elastically biased in such a manner that the front end portion protrudes. The upper end of the contact member is detachably engaged with a member called a cage that is coupled to the lower side of the movable sleeve. The spring is often biased to the lower side. The contact member is disposed outside the contact arm on the outer side of the front end portion as shown in Patent Document 1, and is provided under the front end portion.

7042-1Q289-PF 3 200948555 The member (the so-called direction (up and down direction) slidably 2) is provided at the same end of the injection port. The upper ϋ μ 鳊 is known (refer to the patent literature). The lower 卩 of the upper retainer is also placed only on the front end of the contact. In the above configuration, when the nail is driven, the lower end of the contact member is pressed. The 'contact member' moves upwardly relative to the body. Knot: Shift = the end of the snap is engaged with the retainer 'The combustion chamber of the retainer and the movable sleeve gas is formed. Along with this, the combustible body is burned by A to m. When the mixture of the fan and the air is mixed, the mixed gas is burned. Thereby, the nail is driven by the combustion pressure. [Patent Document 1] Japanese Patent Laid-Open No. 20 05-22069 [Patent Document 2] Japanese Patent Laid-Open No.: 2〇〇7_3〇〇91 However, because the striking piston is rapidly driven to the lower position when the needle is driven in, The reaction, the nailing machine itself is lifted, and the front end or the contact member is detached from the moment the material is driven. Since these members are correctly driven into the normally guided article while maintaining the posture of the needle being punched, for example, the posture of the staples cannot be maintained if the front end portion is detached from the broken punch. As a result, the flexion capacity is liable to occur, and the problem that the connecting belt is scattered to the surroundings, the nail is broken, and the broken needle is scattered is caused. The reason for this is that the contact member and the movable sleeve are elastically biased to the downward direction, but when the nail is driven in, the reaction member is lifted by the reaction, and the contact member is also detached from the driven material. . The normal coil is placed on the upper part of the retainer to bias the movable sleeve and the contact front to the lower side, but when the contact member is pressed to the driven material, the coil spring is held against the coil spring, and 7〇42-l〇 is maintained. 289_PF „ *· * Λ νί- 200948555 The spring is deflected to move the movable sleeve and the sleeve to the top dead center, and the movable core is held until the top dead center. Therefore, the movable (four) system is constructed to be held at the top dead center. In terms of the contact member located under the retainer, the elastic force of the above-mentioned elastic crystal is not affected. Because the force u is driven to the lower portion of the striking piston system when the nail is driven in, the force is used to counteract the action. When the nailing machine itself is lifted and instantly detached from the material to be driven, the load member that will become the free state repeatedly has only its own weight. The contact member is only used by the weight of the body itself. The detachment of the material is not sufficient. Especially in the case of injection to a wall or a naturalized plate, since gravity does not act on the contact member, or gravity acts in the reverse direction, it is even more incapable of corresponding to the detachment. SUMMARY OF THE INVENTION The above-described embodiments of the present invention provide a nailing machine that allows the end portion of the 07-inch driving portion to be detached from the material to be driven even when the member of the guiding nail is subjected to the nail driving. In order to prevent buckling, ❹τ is well prevented from scattering of the connecting band of the connecting nail or the broken nail. According to the embodiment of the above-mentioned more than one of the above-mentioned cautions, the nailing machine system includes: "L red, hitting the cylinder, can be arranged in the way of bu. Gu & % sliding in the up and down direction " 'flying cylinder, movable sleeve, arranged in the upper part of the above-mentioned striking cylinder' Opening and closing the combustion chamber; the active member' is coupled to the lower side of the striking piston, and when the combustion gas generated by burning the mixed gas in the sealed combustion chamber acts on the lower portion of the striking piston, the nail is driven to the lower side; the contact furnace " The contact member is moved upward by the pressed material, and the movable sleeve is moved upward to make the combustion chamber dense

7042-10289-PF 200948555 /, the movable sleeve is independently and often closed; wherein the contact member is elastically biased in the direction in which the nail is driven. Direction,, 'above, the meaning of the bite, π" Qing 玎 eight θ ..... the opposite direction below. That is, the name of the nail into the ground," The direction of gravity is downward. Another too; y face, in the case of driving the nail into the ceiling, "Ding Fang" essentially corresponds to the direction of gravity. Also, in the case of driving the nail into the vertical wall, "below, you carefully rent the direction of Li &., f _ should be perpendicular to the direction of gravity, and the above-mentioned Shushu system can also be included. (4) The spring movable sleeve is biased to the lower side; and the above-mentioned pressure is pressed to the lower side. The spring is required to bias the above-mentioned contact member - .. « Also, the above-mentioned nailing machine system may further include: the lock and the moving sleeve are moved to the top Point A is held at the above-mentioned dead point. 'The movable sleeve is held in the same manner as the movable sleeve. In this nailing machine, the above-mentioned main spring system 'will move the above-mentioned gauge (4) to the lower side, ## When moving to the top dead center, Shang Yudi # ^ ^ Fu Wei moves the above rule to move to the top, i move the movable sleeve to the top dead center, the above contact member and the above rule can be separated, = the rod holds the movable sleeve on the upper At the time of the dead point, the contact member is moved by the spring to the bottom dead center direction. k Further, the contact member is configured to be composed of an injection port having a nail, and the contact member is provided with a contact arm. Also available. In the above-mentioned front end part of the ancient π Contacting the distal end of the configuration may be slidably. Of along with the distal end portion slidably

7042-10289-PF -200948555 Further, the above-mentioned nailing machine is disposed on the outer side of the nailing machine, and the movable cover is elastically biased to the housing, and may further include a movable cover that slides in the driving direction of the contact member. It can also be from top to bottom. By the above movement, the contact member is also indirectly elastically biased, and the movable cover can be elastically biased to the lower side. Engaged in the above contact member, according to the above-mentioned ❹ striking mechanism, the air dust force is made to make the machine include: · the nail is injected; the contact member is placed on the 〇p; The nail is driven out, and the movable cover is slidable in the driving direction of the nail, and covers the outer movable cover of the contact member, and is often elastically biased in the direction in which the nail is driven. - 逑 逑 上述 上述 上述 , , , , , , , 上述 上述 上述 上述 佑 佑 佑 佑 佑 佑 佑 佑 佑 佑 佑 佑 佑 佑 佑 佑 佑 佑 佑 佑 佑 佑 佑 佑 佑 佑 佑 佑 佑 佑 弹簧 弹簧 弹簧 弹簧 弹簧 弹簧 弹簧also may. The 3rd and 3rd members may be slidably disposed at the lower end of the front end portion by the contact end of the injection port of the fitting. The contact member is slid by the contact arm along the above-mentioned contact arm, and includes an upper member that is pressed to be driven to move the movable body to the main body, and the spoon is thin with the D The outer side of the contact structure η contact member that forms the closed combustion chamber is configured to be slidable to the needle. The movable cover, and the upper and the elastic sleeves are often biased to the direction in which the nails are driven into the direction of the nails.

7042-10289-PF 200948555 The striking piston is driven to the lower jaw rapidly, by which the nailing machine itself is lifted and moved away from the moment of being driven into the material, because the contact member is moved and moved. The elastic bias of the sleeve acts independently and protrudes in the driving direction. The lower end of the contact member is not detached from the hit member, and is held in the contact state. Therefore, the posture of the nail is maintained without buckling, and the joint band is scattered. Problems such as the surrounding, the nails being broken, the broken nails, etc. do not occur. In the nailing machine driven by the air pressure, the contact front end which can be driven by pressing the material to be driven can be slidably disposed along the front end portion, and the outer side of the contact member can be nailed The movable cover that slides in the driving direction covers, and the movable cover is often elastically biased to the direction in which the nail is driven in. 'Even when the nail is hit by a person, the nailing machine itself is lifted, and is driven in. The material is detached in an instant, and the movable cover is protruded in the driving direction by the elastic force of the coiled meal, and the lower end of the movable cover is not detached from the driven material and is held in the contact state. Therefore, even if the contact tip is disengaged, the posture of the nail is not greatly inclined. The problem that the joint belt is scattered to the surroundings, the needle is broken, and the broken nail is scattered does not occur. The above-mentioned joint (four) member is slidably fitted to the lower portion of the front end portion to be a contact front end having an injection port of the nail, and the nail can be directly guided. The material contact member is a case in which the contact arm is slidably provided along the front end portion, and the distal side can be effectively prevented. In the case where the double ground prevents the knots or the nails from scattering to the front end, the movable cover is often elastically biased to the direction of the beating person, and the nailing machine itself is lifted by the reaction when the nail is driven in, Beaten

7〇42-l〇289-PF 200948555 : The material moves out of the moment, because the lower end of the movable cover protrudes in the driving direction by the elastic biasing, and the lower end of the movable cover is not detached from the driven material. It is maintained in the state. Therefore, even if the contact front end is disengaged, the posture of the nail is not greatly inclined, and the buckling is hard to occur, and the problem that the joint belt is scattered to the surroundings, the nail is broken, and the broken nail is scattered does not occur. - Again, because the movable cover is often elastically biased to the in-situ direction, the backlash of the movable cover, and the operational feel is good, and by frequently covering the contact members, φ makes it difficult to launch in the air. h, when the nail is driven in, when the nailing machine is lifted by the reaction, the concrete is burned until it is held at the top dead center, and the elastic force of the combustion chamber is ineffective for the contact member because The pressure is pressed against the nail in the direction of the nail through the movable cover and the nail guide, so the same effect occurs in the contact member. • #他的特征和效果系' is understood from the description of the embodiments and the scope of the appended claims. β ® [Embodiment] Hereinafter, typical embodiments of the present invention and modifications thereof will be described based on the drawings. <First Exemplary Embodiment> In Figs. 1 and 2, the symbol 丨 indicates the main body of the combustion type nailing machine. Inside the main body 1, a striking mechanism is provided, and below, a front end portion for ejecting the nail is provided. In the rear part of the striking mechanism, a gas tank (not shown) filled with a combustion gas containing flammable gas liquid is smashed, and in the main body 1, the handle 2 and the shovel 3 are connected, and the shovel 3

7042-10289-PF 9 200948555 is formed by opening the end portion 4 and supplying the nail. In the striking mechanism, the striking piston 6 is slidably disposed in the striking cylinder 5 disposed in the main body 1, and is formed by being sealed by the movable sleeve 8 provided on the upper portion of the striking cylinder 5 as shown in FIG. In the combustion chamber, the composite body is ignited and burned abruptly, and the striking piston 6 is driven by the high-pressure combustion gas to strike the nail in the distal end portion 4. 9 is the trigger for starting operation.

That is, the striking piston 6 is slidably housed in the striking cylinder 5, and the striking piston 7 is integrally coupled to the lower side of the striking piston 6. Further, the upper wall portion u of the distal end portion 4 is formed in a dish shape, and the ejection opening 12 for guiding the sliding of the striking piston 7 is formed at the center thereof. The rear side of the ejection opening 12 is attached to the front end of the magazine: 3.游 Swim to the 10 series, with the upper end surface of the striking piston 6 described above, and placed in the striking steam red 5 and formed on the body! An annular movable sleeve 8 is formed between the upper inner portion of the steam red head, and the movable sleeve 8 is sealed on the cylinder head 13 side to be moved upward to be hermetically sealed: chamber 10 Was formed, like the first! As shown in the figure, by moving to the lower side, the upper portion (four) of the firing chamber 10 is placed in communication with the domain. The lower end of the movable sleeve 8 is slidably coupled to the upper end of the contact member 14 along the front end portion 4 in the needle driving direction; and the lower end is twisted at the front end portion 4 of the material. The way to the top. Further, the "contact member" is described later (4) The movable sleeve 8 is also shown as shown in Figs. 3 and 4

7042-10289-PF 10 200948555 = member of the retainer n is operatively associated at the contact member i4. Because the lower end of the connecting rod-shaped portion Ha on both sides of the far-reaching 1 7 shop is at the bottom, Hb is transported 'so that although the opposite-shaped portion of the connecting rod on both sides is omitted in the illustration, the upper end is in the movable sleeve 8 The lower end &amp; μ ρ extension portion 7b is disposed between the front end portion 4 and the striking cylinder 5. . ^ ^ 1 main coil spring (main spring) 18 is disposed between the lower surface of the striking cylinder 5 and the bottom surface 17b of the accompanying mounting frame, f, 17, whereby the movable sleeve 8 is often biased to the lower side. The ancient scorpion pressed to the bottom. Moreover, the contact member 14 is engaged with

The lower part of the holder 17. Further, the explanation is omitted because it is a conventional technique. The movement of the trigger 9 is effectively configured by the movement of the contact member 14 and the movable sleeve 8 to the top dead center. Further, when the movable sleeve 8 is moved to the top dead center, the lock 2 is held by the lock. Further, in the cylinder head 13, the injection nozzle 21 that communicates with the gas container, the ignition plug (not shown) that is ignited by the mixed gas, and is injected into the combustion chamber 1 by the injection nozzle 21 The flammable gas is mixed with the air that has been burned to within 10, and a rotary fan 22 for generating a mixed gas having a predetermined air-fuel ratio in the combustion chamber is provided. 23 is a gas tank storage chamber. When starting the nailing machine, first, as shown in Fig. 3, the lower end of the contact member 14 # is strongly pressed to the material p to be driven, and the contact structure is moved to the top dead center. . Thereby, the movable sleeve 8 is also moved to the upper side, and the head 13 is abutted, and the sealed combustion chamber 10 is formed. When the combustion chamber 10 is sealed, the combustible gas is ejected from the injection nozzle 21 to the combustion chamber, and the motor is rotated by the rotary fan 22 to rotate the combustible gas and

7042-10289-PF 11 200948555 Mix with air agitation. By the contact member 14 (four) to the top dead center, since the action of the trigger 9 is effective, the trigger 9 is pulled, because of the switch connected to the circuit of the ignition plug. n, so the mixed gas is ignited, burned and rapidly expanded. The pressure of the combustion gas acts on the upper surface of the striking piston 6 and is driven to the lower side by impact, and the driving member 7 is supplied to the inside of the front end portion 4 to be hit by a spike (not shown), and is driven in to be driven in. In the material p. - When the end of the stroke is reached, the temperature in the inside of the combustion chamber is rapidly lowered, and the space above the striking piston 6 that is extended to the striking cylinder 5 is a negative pressure, and moves back to the top dead center by the atmospheric pressure from below. Also, by hitting the striking piston 6 from being hit into the material? Separate, lifted by the nailing machine, the front end 4 cylinder 8 and the contact structure; 4 =: coil spring 18_ force, as shown in the movable sleeve, the mouth: the combustion chamber 1 is opened, such as the 2nd knife Period state 'Next entry operation is prepared. As shown in Fig. 4, the arm member formed by the end of the arm member constituting the system of the contact ruthenium η 15 and the lower contact front end 16 is formed. The bottom arm of the upper end of the arm is engaged via the retainer 17, and the lower side of the contact front end 16 of the upper: 16 is connected to the movable sleeve 8. At the center of the front end portion 4, 12 is formed at the mouth of the town. At the upper end of the ejection opening 12: a continuous ejection opening 24 is formed, and an upper cylindrical portion 9 projecting from the outwardly enlarged projection portion is formed to surround the distal end of the cylindrical arm member having a large diameter: Was formed.

7042-10289-PF ❹ 〇 and the upper end of the contact front end 16 are connected via an adjustment machine 12 200948555. The adjustment mechanism &amp; ❹ ❹ direction movement adjustment, as shown in Fig. 5, is to set the contact front end 16 at the upper wall portion 钉 of the nailed end portion 4 and as shown in the front end 10 In the front &lt;, the middle portion of the hollow screw portion 4 between the holding arms 26 is protruded to the lateral support, and is inserted into the lower end of the screw shaft 28 (four) - hollow The screw 27 - the arm member i screw 30 at the same position of the shaft 28 that is physically rotated, is held by the contact front end 16 of the screw 3 上述. 15. The screwing portion 31 is screwed to the first adjusting screw. The bent portion 31 is formed on the arm structure. The screw shaft 28 is rotatable and has a lower end. The bent portion 31 is held by the upper portion of the contact front end 16 and is not movable up and down. For the protruding belt, the side of the # + 3 portion 25, the connecting piece 33 is pulled out by the dog, and the inner screw portion 34 formed in the connecting piece + ^ ^ r is used to describe the first adjusting screw 30.丨 丨 丨 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 根据 风 风 风 风 风 风 风 风 风 风 风 风 风 风 风 风 风 风 风 风 风 风First, the first adjustment 蟫 q q 砰蹲 ... 糸 axis (four) wire 30 rotation. If the first adjustment screw 30 is screwed, the lower end bending portion of the arm member 15 and the 1 series are held at the same position, which is the first adjustment screw 30. Before the contact, the connecting piece 3 of the upper end of the cutting end 16 is closed, so that the contact front end 16 slides in the driving direction of the nail. Thereby, the length of the entire member 14 is changed, and the top dead center position is not changed, but Because of the lower end of the contact front end 16 in the dead point, the lower end position of the J 下 next month changes, so the depth can be adjusted. That is, the nail becomes the most sinking state for being hit into the material. When a state is entered, it can be adjusted as shown in Figure 5. In this case, 讥U is

7042-102S9-PF 13 200948555 The lower end of the contact front end 16 is connected to the bottom, and the Ub% system is close to the bottom dead center of the striking piston 7, so the touch: the front end 16 is pressed to the λ λ from the work to drink a to the beaten If the nail is struck by the human body, the striking piston 7 is deeply rodped into the wood, and the head of the nail is sunk into the surface of the material to be hit. In this case, the nail can be adjusted as shown in Fig. 6 when it is driven in the state in which the hit member is in the most floating state (hereinafter referred to as the "rising state"). In this case, because the top end of the front end 16 is contacted, the teaching and the work are performed. The oyster shell is separated from the bottom dead center of the striking piston 7. Therefore, if the contact front end 16 is pressed to the first break and the nail is struck, the nail is broken by the striking piston 7 Panpan. When the nail is driven in, the head of the nail is in a state of floating from the surface of the material to be hit. Therefore, the most appropriate driving can be achieved corresponding to the material or the like of the material P to be driven. Further, the top dead center position of the contact member 14 is at a position when the lower end of the arm member 15 and the curved portion 31 abut against the lower side of the support arm 26 of the front end portion 4, at which time the movable sleeve 8 is moved upward. A closed combustion chamber Π) is formed. Second: The position of the bottom dead center is in principle the position at which the upper end bend *&quot; 5a abuts on the upper projection 36 of the front end portion 4 of the upper end portion 11 ΛΑ V ^ 卩 11 (refer to Fig. 4). Further, the top dead center and the bottom dead center of the contact front end 16 are moved by the adjustment according to the adjustment mechanism a. 4 Figure -7 4 and contact member 14 are covered by a cover. As shown in the figure, the cover is composed of a fixed 篕U 疋 cover 37 and a movable cover 38. As in the case of the first work, the front cover of the end portion 4 and the adjustment mechanism a and the arm member are fixed. The lower portion of the 15 can be formed so as to cover the outer periphery of the front end 16. The top end side (lower portion) of the movable jaw 38 is a straight cylindrical shape, and this is also the case. . The upper mortar portion 41 of the 40 is gently tilted in a spider shape

7042-10289-PF ❹ ❹ 14 .200948555

Further, the outer diameter is thicker and the outer portion of the front end portion 16 is also formed by the lower portion of the front end portion 16 to form the &apos;', &quot; The shape above. Therefore, the contact-di: can be abutted on the movable cover-shaped two-touch member U-system is limited to the knife contact and cannot be moved to the lower side. The position of the 盍 38 is 'the end ❹ 、 ', person, as shown in Fig. 7 'in the upper end of the contact front end 16 of the spring receiving member l6a, the evaluation of Huang Cheng and Deng 42 is formed, coil bouncing The crucible 3 is disposed between the spring receiving portion 42 and the upper end portion 4 of the front end portion 4 by the elastic force of the coil spring (secondary spring) 43, and the contact front end is often biased in the driving direction of the nail. .

According to the above configuration, the movable sleeve 8 and the contact front end 16 are biased downward by the main coil spring 18 and the coil spring 43 disposed at the bottom portion of the holder 17. When the nail is driven, as shown in Fig. 8, when the contact end 16 is pressed to the material p to be driven, as described above, for the main coil spring 18, the retainer turns the spring to make the movable sleeve 8 is moved until the upper handle 13 is released, and the movable sleeve g is held at the top dead center 'so the contact front end under the holder i 7 '6, the elastic force of the main coil spring 18 is Not affected. However, the coil spring 43 biases the contact front end 16 to the lower side. Therefore, when the nail is driven in, the striking piston 6 is rapidly driven to the lower side, and by this reaction, the nailing machine body is lifted up, and when it is instantaneously disengaged from the material to be driven, as shown in Fig. 7 Generally, since the contact front end 16 is protruded in the driving direction by the elastic force of the coil spring a, the lower end of the contact front end 16 is not driven from the material P.

7042-10289-PF 15 200948555 Therefore, the posture of the nail is maintained, and the nail is broken, and the broken nail is disengaged from being held in the contact state. The problem of not producing a mysterious buckling, the connection belt scattering to the surroundings, etc. does not occur. Further, the elastic force of the coil spring 43 may be a small diameter of the other end 16 which is biased as it is moved downward, and may be small. Further, the main coil spring 18 which biases the retainer 上方 to the upper side may not be disposed in the configuration in which the end portion 4' is disposed in the movable sleeve portion. The side of the striking heart 5 is again 8 times. The figure 8 is that the front end 16 is cut at the side wall and is not visualized in the second aspect. Of course, the main portion is formed by hollow. <First Modification of First Exemplary Embodiment> Further, the prevention of the detachment of the hit member from the nailing machine is not limited to the configuration in which the contact member is elastically biased. As shown in Fig. 9 to Fig. _, the lid member may be elastically biased. That is, as shown in Fig. 9, the circumference of the end portion 4 is covered by the fixed 盍 37 and the periphery of the contact front end b is covered by the movable cover 38. The pre-J brown 16 is pressed directly by the hand and cannot be launched in the air. The movable cover 38 is slidably disposed along the contact proximal end 16 in the direction in which the nail is driven. The lower dead point of the movable cover 38 is the bottom dead center of the adjustment mechanism a against the most wet state of the front end 16 'about the lower end of the movable cover 38 and the lower end of the contact front end 16 The engaging portion 45 formed at the upper end of the arm portion 44 that protrudes above the movable cover 38 is in contact with the projection 46 provided at the distal end portion 4. Moreover, as shown in FIG. 4, the engaging piece 52 of the upper portion of the movable cover 38 is not as good as _ _ ^

7042-10289-PF 16 200948555 The position of the upper part of the contact front end 16 is set to the bottom dead center position. The position of the 54th (engagement part) and the top dead center position of the movable cover 38 are When the adjustment a is actuated, it is in contact with the contact front end. That is, in the outer circumference of the above-mentioned hollow motion, the first adjustment screw 47 is formed, and the second adjustment screw Ο is "48". The adjusting nut 48 is engaged with the distal end portion 4 without rotating, and the L-shaped engaging piece 50 is integrally formed on the side portion of the adjusting nut μ, and the lower end of the engaging piece 5〇 is attached to the above The arm portion 44 whose upper end of the movable cover 38 protrudes upward is formed such that the engaging piece 5〇 and the arm portion are abutted. According to the above configuration, the adjusting plate of the rotation adjusting mechanism a is slid, and the second adjusting screw 47 is rotated. The adjusting nut 48 is moved in parallel with the driving direction of the needle. When the second adjusting screw 47 is rotated, as described above, since the first adjusting screw is also rotated, the contact front end 16 is also moved in the same direction. The adjusting nut 48 and the contact front end are interlocked by the rotation adjusting plate 52', and the supporting arm 53 and the adjusting nut 48 of the front end 16 are often maintained in the same positional relationship. As described above, the top dead center of the movable cover 38 also corresponds to The position of the adjustment nut 48 that is in contact with the front end 16 is changed in the direction in which the nail is changed. Even if the adjustment nut 48 is in the position, the contact front end 16 protruding from the lower end of the movable jaw 38 is often in the top dead center. Roughly the same 'protruding amount one Therefore, the movable cover 38 is pressed up to the top dead center, and the contact front end 16 is pressed to the top dead center. In theory, the nailing machine can be activated in the air but the amount of protrusion of the front end 16 is small. Even using props to push in

7042-10289-PF 17 200948555 The top dead center is very difficult for the illusion. It is virtually impossible to launch the nail in the air. Further, as shown in FIGS. το and u, the spring receiving portion 42 is formed at the upper end of the movable cover 38, and the coil spring Μ is disposed on the upper portion of the spring receiving portion 42 and the front end portion ^ between. The movable cover 38 is often biased in the direction in which the nail is hit by the elastic force of the coil spring μ. Therefore, with the above configuration, even when the nail is driven, the striking piston 6 is rapidly driven to the lower side, whereby the nailing machine itself is lifted by the reaction, and the material is instantaneously disengaged by the driven material, since the movable cover 3&quot The elastic force of the wire=53 is protruded in the driving direction, and the lower end of the movable cover is not detached from the driven material, and is held in the contact state. Therefore, the posture in which the front end 16 is disengaged from the nail is not greatly inclined, and the problem of buckling is hard to occur, and the problem that the connecting belt is scattered, the nail is broken, and the broken nail is scattered does not occur. Further, since the movable cover 38 is often elastically biased in the direction in which the nail is driven, there is no good feeling of backlash, and by frequently covering the front end 16 of the contact, it is difficult to transmit in the air. <Second Modification of First Exemplary Embodiment> Further, the two sides of the contact front end 16 and the movable cover 38 are not elastically biased, and only one of them may be elastically dusted. For example, when only the movable cover is biased, when the nail is driven, the nailing machine is lifted by the reaction, in particular, the combustion chamber is held at the top dead center position, and the main coil spring of the movable sleeve 8 is pressed. The elastic material touch front end 16 does not function, but the elastic movable cover 38 is of course constituted by the card of the movable cover 38, and the rising portion 54 of the upper portion of the front end 16 is engaged with the elastic movable cover 38.

7042-10289-PF 18 200948555 Since the contact front end 16 is also pressed in the nail driving direction via the movable cover 38, the contact front end 16 can also produce the same nail guiding effect. <Second exemplary embodiment> Next, the detachment preventing structure of the object to be hit from the air-type nailing machine in which the compressed air is used as the driving source and the nail is driven is explained by the first drawing.冈乐14 m ❹ The nailing machine system shown in Fig. 12 includes: a body cymbal, a striking mechanism with a Jiang 4 air pressure as a driving source, and a nail hitting; and a front end portion 4, a lower body: a body The lower side 'sends the nail; the lower end of the front end has the ejection opening of the nail'. In this example, the front end 16 is contacted, and the slidingly slidably sets the end point 16 and the upper arm member 15'. The upper ends of the unit arms 5 are elastically biased at the ends of the arms. Configuration. The handle 9 (four) touch lever 55 can be engaged by the nailing machine to insert the nail into the material, and the fuel is injected into the original end 16' to press the upper end, and the trigger 9 is pressed. ,: The arm member 15 is attached, and the anti-elasticity is rotated by the pull-up L? touch lever 55. In this state, the inter-rod 57 of the starting room 56 is entered and the nailing machine is started. Even if the trigger lever 9 is pulled in a state where the contact front end 16 is not pressed, and the trigger lever 9 is pulled, the contact lever _ can not be activated. 2 The contact front end 16 is formed into a cylindrical shape by the movable cover 38, and the engaging piece 58 is bent and covered. The movable cover piece 58 can be engaged at the upper end of the contact front end i. The 圏 圏 53 is disposed at the upper end of the movable cover plexus 38' under the movable end plexus and the front end portion 4

7042^ 0289-PF 19 200948555 Between the portion 59 and the protruding portion 60 of the front end portion 4', the movable cover 38 is often biased downward by the coil 53. Therefore, the engaging piece 58 of the movable cover 38 is often engaged with the upper end of the contact front end 16. As shown in Fig. 13, when the contact tip end 16' is pressed against the material to be driven p and moved to the top dead center, the movable cover 38' is also moved upward to be engaged with the lower end portion 4 and below. Therefore, with the above configuration, the striking piston 6 is rapidly driven downward when the nail is driven, and even if the nailing machine itself is lifted by the reaction, the ❿ is moved away from the material to be driven, and is movable. The cover 38 is protruded in the driving direction by the elastic force of the coil elastic 53', and the lower end of the movable cover 38 is not detached from the driven material, and is held in a contact state. Therefore, even if the front end 16 is contacted and disengaged, the posture of the nail is not greatly tilted by the movable cover 38, and the buckling is difficult to produce 4; the evening I, *. The difficulty of the seat, the connecting belt is scattered to the surroundings, Problems such as nail breakage and broken nails do not occur. Further, according to the above configuration, when the movable i 38 is moved in the driving direction of the nail by the elastic force of the coil spring ❹ (3), the engaging piece 58 of the movable cover 38 is often in contact with the rigid end 16 before the contact. The upper end is engaged, and the contact front end 16 is also moved in the direction in which the nail is driven, and the Lt Li can be played by the above. Further, due to the movable cover 38, the H7 is elastically biased in the direction in which the nail is driven, there is no backlash, and the operation feeling is good, and it is difficult to perform aerial emission by frequently covering the contact front end 16'. Then, as shown in Fig. 14, the movable cover 38 is lifted by the hand, and the hand is lifted up to the top dead center, even if the tip end of the contact front end 16 of the Φ Φ is pressed in the air to push the nail out' Since the &amp; B s T ancient cover 38 is biased to the lower side by the coil spring 53', it is difficult to maintain this point, and, in addition, the front end 16' is contacted.

7042-10289-PF 20 , 200948555 : The amount of exposure is a little bit. Since it is very difficult to maintain the system even if the props are pressed into the top dead center, it is virtually impossible to launch the nailing machine in the air. Further, although the above embodiment is an example in which the movable cover is provided at the contact front end, the movable cover may be provided on the arm member of the nailer using compressed air, and the movable cover or the contact arm may be elastically biased to the lower side. Get the same effect. While the invention has been described in detail herein with reference to the specific embodiments of the present invention, it will be understood by those skilled in the art. This application is based on the privilege of the privilege granted on January 31, 2008 (Japanese Patent Application No. 2_-020302), the contents of which are incorporated herein by reference. [Industrial Applicability] The present invention is applicable to a nailing machine that is driven by using an oxygen combustion pressure or an air pressure as a driving source.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a nailing machine of the present invention; FIG. 2 is a longitudinal view of a main portion of the nailing machine in a normal state; The main part of the state at the time of the cutting is a longitudinal sectional view of the nailing machine of the nailing machine; the fourth drawing is a longitudinal sectional view of the rigid end of the above-mentioned nailing machine; Longitudinal section cut at the end of the above-mentioned machine

7042-10289-PF 21 200948555 FIG. 6 is a longitudinal cross-sectional view showing a state in which the contact tip end of the distal end portion is adjusted to the most floating state; and FIG. 7 is a front end portion which is different from FIG. 4 . Fig. 8 is a cross-sectional view showing a main portion of a state in which a member is pressed, and Fig. 9 is a longitudinal sectional view showing a top dead center of the movable cover; A cross-sectional view showing a main portion of a state in which the movable cover is elastically biased; FIG. 11 is a perspective view showing a main portion of a state in which the movable cover is elastically biased; and FIG. 12 is a second exemplary embodiment relating to the present invention. A vertical cross-sectional view showing a main portion of a state in which the movable cover of the air-pressure nailer is biased, and FIG. 13 is a longitudinal cross-sectional view showing a state in which the material is pressed, and FIG. 14 is a view showing A longitudinal section of a state in which air is difficult to launch. [Description of main component symbols] 1. 本体 Main body, 3 匣, 4, 4' front end, 4a upper wall, 8 movable sleeve,

7042-10289-PF 22 200948555 16, 16' contact front end, 16a spring bearing, 17 retainer, 18 main coil spring, 42 spring receiving part, 43, 53, 53' coil spring 38, 38' movable cover, AP Hit the material.

7042-10289-PF 23

Claims (1)

200948555 VII. Patent application scope: i A nailing machine, including: a striking cylinder; the striking cylinder 'is struck in a manner that can slide in the up and down direction; 夂 the movable sleeve 'is arranged to open and close the combustion of the striking cylinder The upper and lower active members are combined on the lower side of the striking piston, and the combustion gas generated by the above-mentioned smoldering body, which is closed by the sizzling Function: the striking piston, the nail in the front end portion is driven downward; and the contact member is moved upward by being pressed against the material to be driven, and the movable sleeve is moved upward to seal the combustion chamber; wherein the contact The component system is independent of the movable sleeve and is often elastically biased in the direction in which the nail is driven. Further includes: and further comprising: ❹ 2. The main spring of the nailing machine as described in claim 1 of the patent application The sleeve is biased to the lower two to spring, and the contact member is biased to the lower side. 3. The nailing machine _____ lock lever according to the second item of the patent application scope, When the movable sleeve moves to the top dead center, the movable sleeve is held at the top dead center; and the gauge is disposed on the movable sleeve; wherein the main spring system biases the gauge to the lower side, when the contact is When the member moves to the top dead center, the above rule moves to the upper side, and the movable sleeve moves to the top dead center, 7042-10289-PF 24 200948555 The above contact member and the above-mentioned gauge are separable, even if the above-mentioned lock lever holds the movable sleeve at The above-mentioned contact member is movable to the bottom dead center direction by the above-mentioned secondary spring. The above-mentioned contact member is at the front end portion. The lower portion is slidably disposed, and is formed by a contact front end having an ejection opening of the nail. 5. The nailing machine according to the item of claim 2, wherein the upper middle contact member is provided along the front end portion. The sliding device is provided in a sliding manner. 6. The nailing machine according to the item [0002] of the patent application further includes a movable cover which is disposed to cover the outer side of the contact member. Sliding in the driving direction; wherein the movable cover is elastically biased to the lower side. 7. The movable cover system according to claim 6 is engaged with the contact member, and the nailing machine The movable cover is elastically biased to the lower side and is indirectly elastically biased. The above-mentioned contact member is also a type of nailing machine, comprising: a striking mechanism, which uses the air pressure as the initial source and will be beaten by Φ. a part, the nail is ejected; the D-® contact member is slidably pressed against the driven material along the front end portion to punch the nail. By being called, the cymbal and the movable cover are slidable into the nail. The outer side; ° covers the above contact member 7042-10289-PF 25 200948555 wherein the above movable cover is often elastically biased in the direction in which the nail is driven. 9. The nailing machine as described in claim 8 of the patent application, including... A spring ' is disposed between the movable cover and the front end portion; wherein the movable cover is pressed to the needle driving direction. The heart 'is often elastically biased 10 · as in the touch component system described in item 8 of the patent application, in the above-mentioned 嫂 从 从 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 In the configuration, there are 8 items in the touch structure, and the above is completed. a contact arm structure in which a rigid end portion is slidably disposed 7042-10289-PF 26