JP4709171B2 - Back-loaded power sprayer - Google Patents

Back-loaded power sprayer Download PDF

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JP4709171B2
JP4709171B2 JP2007017177A JP2007017177A JP4709171B2 JP 4709171 B2 JP4709171 B2 JP 4709171B2 JP 2007017177 A JP2007017177 A JP 2007017177A JP 2007017177 A JP2007017177 A JP 2007017177A JP 4709171 B2 JP4709171 B2 JP 4709171B2
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portion
formed
back
part
power sprayer
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JP2007159587A (en
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正雄 嶋本
徹 野村
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ニューデルタ工業株式会社
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Description

  The present invention relates to a backpack type power sprayer, and more particularly to a structure that facilitates handling of the backpack type power sprayer.

  2. Description of the Related Art Conventionally, there is known a back type power sprayer in which a pump device constituted by an engine and a pump drive source such as an engine, and a chemical liquid tank in which a chemical liquid is stored are mounted on a frame body portion. In addition, an apparatus in which the chemical liquid tank and the frame part are integrally formed is also known. The operator carries such a power sprayer and sprays the medicine while walking in the field to perform the control work. Therefore, it is set as the apparatus structure which improves the operativity of this back type power sprayer, and makes it easy to handle.

  Moreover, in a backpack type power sprayer, spraying of the chemical solution is performed via a spray pipe by a pump device driven by the power of the engine. Such a spray tube sprays a chemical solution from a main body through a hose through a spray nozzle provided at the tip of the spray tube. The spray tube is sometimes attached with a chemical solution to the spray nozzle and requires careful handling.

  From this point of view, a structure of a backpack type power sprayer as shown in Patent Document 2 has been proposed. Specifically, an upward projection is erected on the body of a backpack type power sprayer, and the spray tube is engaged and supported by a locking member formed on the spray tube with respect to the projection ( Patent Document 2).

JP-A-8-80151 JP-A-11-235146

  The backpack power sprayer is carried around before and after the control work. Moreover, it may be temporarily placed at rest. At that time, conventionally, at the time of standing, a spray pipe was attached to the side of the chemical tank vertically, and when carrying a backpack type power sprayer, the operator moved the spray pipe in one hand and the body body in the other . The operator was unable to perform other tasks at the same time because both hands were blocked. Therefore, in order to perform the work, the other gripped object must be once released, which is cumbersome and the work efficiency is poor.

  In the locking means for locking the spray pipe to the airframe body proposed in Patent Document 2, both hands of the operator are free as long as the backpack type power sprayer is carried. However, in order to move the neglected back-type power sprayer, the operator has to have a spray tube in one hand and an airframe body in the other as described above.

  Therefore, the present invention relates to a backpack type power sprayer that solves the above-mentioned conventional problems, and aims to provide a backpack type power sprayer that can be handled easily and safely by an operator. is there.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

In claim 1, an engine (5) and a pump device (4) are disposed in the integrally formed frame portion (2) and the chemical liquid tank (3), and are driven by the power of the engine (5). In the back type power sprayer in which the chemical liquid in the chemical liquid tank (3) is sprayed via the spray pipe (15) by the pump device (4), the liquid chemical tank (3) is disposed on the cap ( 129 ). The holding part ( 129 a ) provided with a locking member ( 132 ) for engaging and holding the spray pipe (15),
In a state where the spray pipe (15) is engaged and held by the locking member ( 132 ), the grip part ( 129a ) and the spray pipe (15) engaged and supported by the grip part ( 129a ) with one hand are simultaneously provided. have been, and portable mobile, the longitudinal direction to form a groove (129c) of the grip portion (129a), the concave grooves (129c), engaged for locking said spray tube (15) removably The locking member ( 132 ) is provided as a locking means, and the locking member ( 132 ) has a substantially U-shaped notch portion ( 132a ) and a locking portion ( 132b ) in a side view disposed in the concave groove ( 129 c ). ), The inner diameter of the locking portion ( 132b ) is substantially the same as the outer diameter of the spray tube (15), and the notch width (W1) of the notch portion (32a) formed to be narrower than the outer diameter of 15), said holding part (129 ) Is configured in a substantially E shape in a side view, and a reinforcing portion (131) is erected integrally with the upper surface of the cap (129) at a substantially central position on the left and right sides. The cap (129) is pierced, a discharge passage (131a) communicating with the inside of the chemical liquid tank (3) is formed, and a breather hole (141) is formed in the upper portion of the discharge passage (131a). is there.

  As effects of the present invention, the following effects can be obtained.

As in claim 1, the engine (5) and the pump device (4) are disposed in the integrally formed frame portion (2) and the chemical liquid tank (3), and are driven by the power of the engine (5). In a backpack type power sprayer in which the chemical liquid in the chemical liquid tank (3) is sprayed through the spray pipe (15) by the pump device (4), the liquid chemical tank (3) is disposed on the cap ( 129 ). to have been gripped portion (129a), said spray tube (15) comprises a locking member (132) for engaging and holding, spraying pipe (15) while engaging and holding the locking member (132), Since the holding part ( 129a ) with one hand and the spray tube (15) engaged and supported by the holding part ( 129a ) are simultaneously carried and movable, the operator can hold the holding part Hold the back type power sprayer and spray tube with one hand Te, it is possible to move the said back negative type power sprayer, it become easy to handle.

Further, the grip portion longitudinally to form a groove (129c) of (129a), the concave grooves (129c), the engagement of the locking means for detachably locking the spray pipe (15) Since the stop member ( 132 ) is provided, the spray tube can be easily engaged and supported from above with the locking member, and the handling becomes easy.

Further, the locking member ( 132 ) is configured by a substantially U-shaped notch ( 132a ) and a locking part ( 132b ) in a side view disposed in the concave groove ( 129 c ), and the locking part ( 132b ). The inner diameter of the spray tube (15) is substantially the same as the outer diameter of the spray tube (15), and the notch width (W) of the notch ( 132a ) is formed to be narrower than the outer diameter of the spray tube (15). Therefore, the spray tube can be easily engaged with and detached from the engaging member from above, and the spray tube can be prevented from being detached upward.

Further, the grip portion (129a) is formed in a substantially E shape in a side view, and a reinforcing portion (131) is integrally provided between the upper surface of the cap (129) at a substantially central position on the left and right sides, and the reinforcing portion is provided. In the part (131), the cap (129) is pierced, a discharge passage (131a) communicating with the inside of the chemical liquid tank (3) is formed, and a breather hole (141) is formed in the upper portion of the discharge passage (131a). ) Is formed, it is possible to form the discharge path with a simple configuration, and the air can be vented from the breather hole through the discharge path, thereby reducing the number of parts and reducing the manufacturing cost. . In addition, it is easy to carry and move, and at the same time, during the movement or during the spraying operation, the chemical solution does not leak from the breather hole, and the operator's limbs and the like are not wetted.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a front view of a backpack type power sprayer according to the present embodiment, and FIG. 2 is a side view of the same. 3 is a front view of the operation unit, and FIG. 4 is a side view of the same.

  5 is a front view of the cap according to the configuration example, FIG. 6 is a side view of the cap, FIG. 7 is a side view of the cap according to the embodiment, and FIG. FIG.

  FIG. 9 is a side sectional view of a conventional cap, FIG. 10 is a side sectional view of the cap according to the embodiment, and FIG. 11 is a partial front sectional view of the backpack type power sprayer according to the embodiment. 12 is a rear view of the back-type power sprayer according to the embodiment, FIG. 13 is a side view of the back pad according to the configuration example, and FIG. 14 is a plan view of the same.

  First, the overall structure of the backpack type power sprayer 1 will be described with reference to FIGS. 1 and 2. In addition, let the left side in FIG. 2 be the back surface of the backpack type power sprayer 1. In the backpack type power sprayer 1, the frame body portion 2 and the chemical liquid tank 3 are integrally configured by blow molding. The frame body part 2 is formed with a pedestal part 2a at the lower part and a backpack part 2b at the back surface. The pedestal 2a is provided with a pump device 4 and an engine 5 that is a drive source of the pump device. A fuel tank 6 is disposed below the engine 5, and the fuel tank 6 and the engine 5 are fixed to the pedestal portion 2 a via a vibration isolation member 7.

  A recoil starter 8 is disposed at the front center of the engine 5. A starting cable 9 is extended from the recoil starter 8, and a grip portion 10 is disposed at the tip of the starting cable 9. The grip portion 10 is fixed to a bracket 11 formed at a lower side portion of the frame body portion 2 described later by a hook 12. The start cable 9 is pulled by the grip portion 10 and ignited by the recoil starter 8 to start the engine 5. As described above, when the engine 5 is started from a stopped state, the operator can start the engine 5 while carrying the back-type power sprayer 1 on the back.

  The suction port of the pump device 4 is connected to the chemical liquid tank 3 through a hose (not shown). Then, when the engine 5 is started and the pump device 4 is driven, the chemical liquid in the chemical liquid tank 3 flows from the chemical liquid discharge port 13 formed on the side surface of the frame body 2 to the chemical liquid discharge port 13. It can be sprayed by being sent by pressure to a spray pipe 15 to be described later via a hose 14 interposed therebetween.

  Regarding the structure of this type of backpack type power sprayer, for example, the one shown in Patent Document 1 has been proposed. Specifically, in a backpack type control machine in which a mounted engine can be started by a cell motor, a battery mounting portion for driving the cell motor is provided on the backrest side. In the control machine, an engine start switch, an accelerator lever, and a choke knob are disposed on one side of a machine body including a frame body and a chemical tank (see Patent Document 1).

  However, the conventional backpack type power sprayer has the following problems. That is, the operator always carries the back-type power sprayer during the control work. Further, it is necessary to spray the chemical liquid at a necessary place, and the engine is started and stopped as appropriate. If the start of the engine is poor, the fuel concentration may have to be adjusted by a choke operation. In such a case, conventionally, since the operator could not perform the choke operation with the backpack power sprayer on the back, the backpack power sprayer must be placed on the ground each time, It was annoying.

  In this regard, conventionally, as proposed in Patent Document 1, a back-type control machine having a choke knob on one side of the machine body is already known. However, in the conventional backpack type control machine, since it is necessary to newly arrange a member for attaching the choke knob in the machine body, there is a problem that it is costly.

  Next, the mounting structure of the choke knob 19 according to this configuration example will be described below. As shown in FIGS. 3 and 4, an operation portion 16 including an accelerator lever 17 and the like is formed in the lower portion on the left and right sides of the frame body portion 2. A bracket 11 is formed integrally with the frame body portion 2 and has a substantially L shape in a side view at a lower portion on one side of the frame body portion 2. The bracket 11 includes a vertical portion 11a formed along the vertical direction of the backpack portion 2b, and a horizontal portion 11b formed so as to gradually become horizontal from the vertical portion 11a toward the front of the body. It is configured.

  A mounting bracket 20 is fixed to the horizontal portion 11b with bolts 21. The mounting bracket 20 is formed in a substantially U shape in a sectional view, and includes a vertical portion 20a and an upper horizontal portion 20b. An accelerator lever 17 is rotatably supported by a support shaft 23 on the vertical portion 20a. The front side of the accelerator lever 17 is configured to be linked and interlocked with a throttle valve (not shown) disposed in the engine 5 via a wire 22. The operator can adjust the valve opening and reduce the output of the engine 5 by rotating the accelerator lever 17 while carrying the back-type power sprayer 1 according to this configuration example. .

  An engine stop switch 18 is fixed to the upper horizontal portion 20b by a nut 25. The engine stop switch 18 is connected to an ignition circuit via a wiring 24, and the operator can stop the engine 5 by pressing the engine stop switch 18 while carrying the back load type power sprayer 1.

  A choke knob 19 is fixed to the vertical portion 11 a of the bracket 11 by a nut 27, and is connected to the choke knob 19 via a wire 26 with a choke valve. When the engine 5 is in a poor condition or at a low temperature, the choke knob 19 is pulled to close a choke valve (not shown) to reduce the air intake amount, thereby increasing the amount of air-fuel mixture and making it easy to start. it can. Therefore, by providing the choke knob 19 in the operation unit 16, the choke operation by the choke knob 19 can be performed while the backpack type power sprayer 1 according to the present configuration example is carried, and the engine 5 can be easily started. It is.

  A belt attachment hole 28 for attaching a back belt (not shown) is provided through the upper portion of the vertical portion 11a. The bracket 11 to which the choke knob 19 is attached can also be used as a bracket for fixing the backpack belt. As described above, the bracket 11 is configured in an L shape in side view and integrated with the frame body portion 2. Formed. Therefore, in the mounting structure of the choke knob 19 according to this configuration example, it is not necessary to provide a new member as compared with the conventional structure, and the frame body portion 2 can be easily formed, so that it does not cost. Particularly useful in terms. Further, the rigidity of the side of the frame part 2 can be increased and the rigidity can be increased.

  As described above, since the operation portion 16 including the accelerator lever 17, the engine stop switch 18 and the choke knob 19 is assembled on the left and right sides of the frame body portion 2, the operator can While holding the spray tube 15 extending from the other side of the body part 2, the operation part 16 can be easily operated with a vacant hand.

  Next, locking means for the spray tube 15 according to the configuration example will be described below. A chemical liquid injection port 3a is provided in the upper part of the chemical liquid tank 3, and an open / close cock 3b for discharging the residual liquid is disposed at the lower part on one side of the left and right sides (the side part in the middle of the upper and lower sides of the frame part 2). As shown in FIGS. 5 and 6, a cap 29 is disposed on the upper part of the chemical tank 3, and the cap 29 includes a gripping portion 29a and a mounting portion 29b, and is gripped in the vertical axis direction with respect to the mounting portion 29b. A portion 29a is erected. The attachment portion 29b has a female screw threaded on the inner surface, and is screwed into the chemical solution inlet 3a. Further, the grip portion 29a is formed in a substantially E shape when viewed from the side, and a reinforcing portion 31 is disposed at the substantially center of the left and right sides to maintain the strength of the grip portion 29a.

  By forming the gripping portion 29a, the concave moving gripping portions that are conventionally formed on both side surfaces of the chemical liquid tank 3 are not required, so that the manufacture of the machine body and the mold manufacturing are facilitated. Further, the structure of the cap 29 as described above shows one embodiment of the present invention, and as another embodiment, a breather hole can be formed in the reinforcing portion or the like as will be described later.

  In the grip portion 29a, a concave groove 29c is formed in the longitudinal direction, and a locking member 32 is disposed in the concave groove 29c as a locking means for detachably locking the spray tube 15. . The locking member 32 is formed in a substantially U shape in a side view, and includes a notch portion 32a and a locking portion 32b, and is disposed along the short direction of the concave groove 29c. The inner diameter of the locking part 32 b and the notch width W of the notch part 32 a are formed substantially the same as the outer diameter of the spray tube 15. The locking member 32 may be formed integrally with the grip portion 29a, or a separately formed locking member 32 may be attached.

  As shown in FIG. 8, the locking member 32 is disposed in the concave groove 29c, so that the spray tube 15 is engaged with the locking member 32 and is set in the longitudinal direction of the grip portion 29a. Can do. Therefore, when the operator moves the backpack-type power sprayer 1 according to the present embodiment without carrying it, the operator simultaneously holds the grip portion 29a and the spray tube 15 engaged and supported by the grip portion 29a with one hand. This makes it easy to carry and move. Also, when storing, the spray tube 15 is not fixed and the hose 14 is not stretched around.

  Further, as shown in FIG. 7, the notch width W1 of the notch 32a may be formed to be narrower than the inner diameter W2 of the locking part 32b (W1 <W2). In such a case, the notch width W1 is formed to be slightly narrower than the outer diameter of the spray tube 15 and through which the spray tube 15 can pass. By being formed in this way, it is possible to prevent the spray tube 15 inserted through the notch 32a from being pulled out above the notch 32a. Then, the spray tube 15 can be easily locked and supported, and the spray tube 15 can be left in a state of being locked to the grip portion.

  The locking member 32 may be formed of a resin having elasticity and chemical resistance, such as urethane resin. In such a case, since the spray tube 15 is elastically locked by the locking member 32, it is particularly useful in that the spray tube 15 can be easily attached and detached. Further, the locking members 32 may be arranged at least at two or more locations in the longitudinal direction of the gripping portion 29a, and the spacing between the locking members 32 may be maximized. By arranging in this way, the spray tube 15 can be stably locked and supported.

  Next, the structure of the cap according to the prior art will be described below. As shown in FIG. 9, in the conventional cap 40, a breather hole 41 is formed in the upper plane of the main body of the cap 40 formed in a substantially columnar shape, and a screw 40 is detachably attached to the drug solution inlet 3a at an attachment portion 40b. It was worn. In order to prevent the chemical liquid in the chemical liquid tank 3 from leaking from the breather hole 41 when the cap 40 is tilted in a state where the cap 40 is attached to the chemical liquid tank 3, A reversely supported valve 42 was disposed directly below the breather hole 41. In order to ensure ventilation in the chemical tank 3, it is useful to make the breather hole 41 in the cap 40. However, the chemical injected into the chemical tank 3 leaks from the breather hole 41, It was necessary to prevent the surroundings from getting wet. For this reason, the reverse support valve 42 is separately provided.

  However, if the reverse support valve 42 is separately arranged on the cap 40, there is a problem that the number of parts increases and the cost for manufacturing the cap increases. Therefore, in the structure of the cap according to the present embodiment, a breather hole is provided so as not to provide a reverse support valve and to prevent chemicals from leaking directly.

  As shown in FIGS. 10 and 11, the cap 129 includes a grip portion 129a and an attachment portion 129b, and the grip portion 129a is erected in the vertical axis direction with respect to the attachment portion 129b. The attachment portion 129b has a cylindrical shape and is internally threaded with an internal thread, and is screwed into the chemical solution inlet 3a. Further, the grip portion 129a is formed in a substantially E shape in a side view, and a reinforcing portion 131 is integrally disposed at a substantially right and left center to constitute a grip member. The reinforcing portion 131 can further increase the rigidity of the grip portion 129a, reduce the number of parts, and reduce the manufacturing cost.

  In the grip portion 129a, a concave groove 129c is formed in the longitudinal direction so as to open upward, and a locking member 132 is provided in the concave groove 129c as a locking means for detachably locking the spray tube 15. Is arranged. The locking member 132 is formed in a substantially U shape in a side view, and includes a notch portion 132a and a locking portion 132b, and is disposed along the short direction of the concave groove 129c. By disposing the locking member 132 in the concave groove 129c, the spray tube 15 can be engaged with the locking member 32 and laterally arranged in the longitudinal direction of the grip portion 29a.

  A discharge passage 131a is formed in the vertical direction inside the reinforcing portion 131 and in the central portion of the attachment portion 129b. At the lower end portion of the reinforcing portion 131, the discharge passage 131 a is opened so as to penetrate into the cap 129. The upper end portion of the reinforcing portion 131 is closed by the concave groove 129c, and a breather hole 141 is provided in a horizontal direction on the side surface of the reinforcing portion 131 near the lower surface of the concave groove 129c. The breather hole 141 is formed so as to vent from the inside of the cap 129 to the outside through the discharge passage 131a and the breather hole 141.

  Thus, by providing the discharge path 131a and the breather hole 141, the chemical liquid inside the chemical liquid tank 3 can be passed through the breather hole 141 without providing a separate back support valve 42 as compared with the conventional cap 40. Can be prevented from leaking. Therefore, the operator can simultaneously hold the gripping part 129a and the spray tube 15 engaged and supported by the gripping part 129a with one hand, making it easy to carry and moving, and at the time of such movement or during spraying work The chemical liquid does not leak out from the breather hole 141, wets the operator's limbs and the like, and there is almost no chemical damage.

  Further, in this configuration example, the discharge passage 131a and the breather hole 141 are formed in the reinforcing portion 131 disposed in the grip portion 129a, but the forming member is not limited to this. That is, for example, it may be formed on both left and right edges formed obliquely downward from both ends of the horizontal portion of the grip portion 129a.

  Further, as described above, the operator performs the control work while carrying the back-type power sprayer, but forming the shape of the back-end part of the body according to the human body can improve the back feeling and fatigue. It is preferable in terms of reduction. However, since the back pad that is in contact with the backpack is flat as in the prior art, the shape does not match the backpack. Further, since the back pad is not shaped to cover the backpack, there is a problem that the chemical solution and the exhaust air from the engine leak to the operator side.

  Next, the structure of the back pad 33 of the backpack type power sprayer 1 according to this reference example will be described below. As shown in FIGS. 2 and 12, a backrest pad 33 is affixed to the backpack portion 2b of the backpack-type power sprayer 1 according to this reference example, and the backpack belt mounting portion 34 is disposed at the top. Has been. The back portion 2b is formed so that the lower portion where the pump device 4 and the like are disposed protrudes in the back direction rather than the upper portion where the chemical liquid tank 3 is formed. That is, the change in shape is smoothly formed from the upper part to the lower part so as to be substantially S-shaped in a side view. The back pad 33 is formed in accordance with the shape of the backpack 2b.

  Specifically, as shown in FIG. 2, the upper portion 33a of the back pad 33 is gently curved from the upper side to the lower side in the front direction (right direction in FIG. 2), and the rear side direction as it moves to the lower portion 33b. It is formed so as to protrude gently (leftward in FIG. 2). The back pad 33 is formed to match the shape of the backpack 2b. Thus, when the operator carries the backpack type power sprayer 1 on the back of the operator by preventing the gap between the backpad and the backpack portion 2b from being seen in a side view. Because it fits, fatigue due to control work can be reduced.

  As shown in FIG. 12, the upper portion 33a and the lower portion 33b of the back pad 33 are formed so as to integrally cover the back portion 2b in the left-right axial direction of the back portion 2b. That is, the back pad 33 is formed so as not to create a gap or space between the backpack 2b and the operator's back. Therefore, it is possible to prevent the operator from being exposed from the back due to the sprayed pesticide and the exhausted air from the engine 5. Further, since the backpack 2b is integrally covered, the backpack 2b looks smart also in terms of design.

  Further, as shown in FIGS. 13 and 14, in order to make the shape of the back pad 33 more suitable for the operator's back, a recess 33 c may be formed in the back pad 33 substantially at the center on the left and right. Specifically, a concave portion 33c is provided along the vertical direction of the back pad 33 and substantially at the center of the left and right sides, and the left and right end portions 33d and 33d are formed to bend in the back direction in plan view. . By forming the recessed portion 33c and the end portion 33d, the back pad 33 fits the operator's back. In particular, since the operator's waist is held by the left and right end portions 33d, the back type power sprayer 1 can be prevented from shifting in the left-right direction during the control operation.

  The shape of the backpack 2b in plan view is such that the left and right ends of the back are curved toward the back, and the degree of curvature of the back 2b increases from the top to the bottom. When formed, the back pad 33 is formed in accordance with the shape of the backpack 2b. Such a shape is particularly useful in terms of further reducing operator fatigue.

  Like the back pad 33 shown in the present reference example, it is formed in a groove shape that is divided into an upper left part and a lower part, thereby improving the ventilation of the back of the operator carrying the back type power sprayer 1 on the back. be able to. The back pad 33 is not limited to the groove formed in this way, but may be a single-sided pad.

  Since it is configured in this manner, in a backpack type power sprayer in which the integrally formed frame body portion and the backside portion of the chemical solution tank are formed in a shape in which the lower part protrudes from the upper part, the back that comes into contact with the backside part Since the pad is formed so as to conform to the shape of the backpack, and the backpack surface is covered with the backpack, when the operator carries the backpack-type power sprayer on the back, Since there is no gap between the backpack and the backpack, it is possible to prevent the sprayed chemical liquid and engine exhaust from being exposed to the operator's back, and handling becomes easy. In addition, the back part looks smart in terms of design.

  Also, the back pad is formed with a concave portion that is continuous in the vertical direction, and the back pad is formed so as to bend in the back direction from the substantially right and left center to the end portion. In addition, the exhaust air from the engine and the engine can be prevented, and when the operator carries the back type power sprayer, the operator can fit the operator's back to reduce fatigue.

The front view of the backpack type power sprayer concerning a present Example. Similarly side view. The front view of an operation part. Similarly side view. The front view of the cap which concerns on a structural example. Similarly side view. The side view of the cap which concerns on an Example. The front view of the backpack type power sprayer showing the attachment state of a spray pipe. The side sectional view of the conventional cap. The side sectional view of the cap concerning an example. The partial front sectional view of the backpack type power sprayer concerning an example. A rear view of a backpack type power sprayer concerning an example. The side view of the back pad which concerns on a structural example. FIG.

DESCRIPTION OF SYMBOLS 1 Back type power sprayer 2 Frame part 2a Base part 2b Back side part 3 Chemical liquid tank 5 Engine 11 Bracket 15 Spray pipe 16 Operation part 17 Accelerator lever 18 Engine stop switch 19 Choke knob 29, 129 Cap 29a, 129a Grasping part 32 Engagement Stop member 33 Back pad 131a Discharge path 141 Breather hole

Claims (1)

  1. An engine (5) and a pump device (4) are disposed in the integrally formed frame (2) and chemical solution tank (3), and the pump device (4) is driven by the power of the engine (5). Thus, in the backpack type power sprayer in which the chemical liquid in the chemical liquid tank (3) is sprayed through the spray pipe (15), the gripping part ( 129a ) disposed on the cap ( 129 ) of the chemical liquid tank (3) ) Is provided with a locking member ( 132 ) that engages and holds the spray pipe (15), and the gripping part ( 129 a) is held with one hand while the spray pipe (15) is engaged and held by the locking member ( 132 ). ) and, gripping portion (129a) in engagement supported sprayed tubes (15) and have at the same time, the portable moving, longitudinally to form a groove (129c) of said gripping portion (129a), the concave groove (129c), said spray pipe (15) Detachably provided with the locking member as the locking means for locking (132), said locking member (132) is notched portions of side surfaces substantially U-shape disposed in the groove (129c) (132a ) And the locking part ( 132b ), the inner diameter of the locking part ( 132b ) is substantially the same as the outer diameter of the spray tube (15), and the notch width (W 1) of the notch part (32 a). ) Is formed so as to be narrower than the outer diameter of the spray tube (15), and the grip portion (129a) is formed in a substantially E shape in a side view, and the upper surface of the cap (129) is located at a substantially central position on the left and right. A reinforcing portion (131) is integrally provided between the discharge portion (131a) and the reinforcing portion (131) penetrates the cap (129) and communicates with the inside of the chemical liquid tank (3). ) And a breather hole (141) is drilled in the upper part of the discharge passage (131a) Knapsack power sprayer, characterized in that the.
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JP5363210B2 (en) * 2009-06-25 2013-12-11 株式会社丸山製作所 Back negative power sprayer
EP2476464B1 (en) * 2011-01-13 2018-11-14 Advanced Firefighting Technology GmbH Backpack type firefighting device and container therefor

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