WO2020207103A1 - 一种具备便捷开关切换保险的喷枪 - Google Patents

一种具备便捷开关切换保险的喷枪 Download PDF

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Publication number
WO2020207103A1
WO2020207103A1 PCT/CN2020/073669 CN2020073669W WO2020207103A1 WO 2020207103 A1 WO2020207103 A1 WO 2020207103A1 CN 2020073669 W CN2020073669 W CN 2020073669W WO 2020207103 A1 WO2020207103 A1 WO 2020207103A1
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WO
WIPO (PCT)
Prior art keywords
switch
safety
trigger
gun
spray gun
Prior art date
Application number
PCT/CN2020/073669
Other languages
English (en)
French (fr)
Inventor
沈卫东
Original Assignee
浙江火山机械有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201920493559.0U external-priority patent/CN209968702U/zh
Priority claimed from CN201910293809.0A external-priority patent/CN109967277A/zh
Application filed by 浙江火山机械有限公司 filed Critical 浙江火山机械有限公司
Publication of WO2020207103A1 publication Critical patent/WO2020207103A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/16—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant characterised by the actuating means
    • B65D83/20—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant characterised by the actuating means operated by manual action, e.g. button-type actuator or actuator caps
    • B65D83/207—Actuators comprising a manually operated valve and being attachable to the aerosol container, e.g. downstream a valve fitted to the container; Actuators associated to container valves with valve seats located outside the aerosol container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/002—Manually-actuated controlling means, e.g. push buttons, levers or triggers
    • B05B12/0022—Manually-actuated controlling means, e.g. push buttons, levers or triggers associated with means for restricting their movement
    • B05B12/0024—Manually-actuated controlling means, e.g. push buttons, levers or triggers associated with means for restricting their movement to a single position
    • B05B12/0026—Manually-actuated controlling means, e.g. push buttons, levers or triggers associated with means for restricting their movement to a single position to inhibit delivery

Definitions

  • the invention belongs to the technical field of spray guns, and in particular relates to a spray gun with convenient switch switching insurance.
  • polyurethane foam cured foam elastomer has excellent properties such as adhesion, waterproofing, heat-resistant expansion and contraction, heat insulation, sound insulation and even flame retardant (flame retardant type), it is widely used in industrial production and daily civilian use.
  • the bottled polyurethane foam is filled with polyurethane prepolymer, catalyst and gas propellant in a pressure-resistant iron aerosol can. It is also called polyurethane foam caulking agent. It is a one-component, moisture-curing, Multi-purpose polyurethane foam filled elastic sealing material. During construction, the aerosol-like colloid is sprayed to the part to be constructed through the matching glue gun or manual nozzle, and the process of foaming, bonding, forming and sealing is completed in a short time.
  • Common polyurethane foam sealant spray guns generally include a gun body with a grip, a one-way valve, a barrel and nozzle, a thimble and a slider assembly, a sealing device, a trigger, a return spring, and an opening adjustment device.
  • the upper end of the front half of the gun body is provided with a hole, which is connected to a one-way valve that fits with the caulking agent bottle.
  • the pressure foaming agent enters the gun body through the one-way valve through the hole; the through hole at the front end of the gun body connects the barrel and
  • the gun nozzle has a sealing device in the through hole at the rear end.
  • the thimble passes through the center of the sealing device and is placed in the barrel.
  • the front end of the thimble closely abuts against the inner wall of the gun nozzle to form a closed internal space for the foam agent to circulate in the front half of the gun body.
  • the rear half of the gun body is provided with a through hole for accommodating the sliding block fixedly connected to the thimble and the return spring.
  • the rear end of the through hole is connected with the opening adjustment device, and the return spring is compressed between the thimble slider and the opening adjustment device.
  • the spring force reacts to the thimble slider to push the thimble against the inner wall of the gun mouth to seal the gun mouth;
  • the middle of the gun body is equipped with a trigger that can control the foaming agent entering the gun body and sprayed from the gun mouth, and the trigger is connected with the gun body pin ,
  • the trigger rotates within the set range with the pin as the center.
  • pull the trigger backward to move the thimble slider back and the thimble will be separated from the inner wall of the gun mouth, opening the foaming agent spray channel, and the foaming agent will be sprayed out through the inner hole of the gun mouth.
  • release the trigger the thimble will reset under the action of the return spring, and then press against the inner wall of the nozzle again to close the spray channel of the foaming agent, and the foaming agent immediately stops spraying from the inner hole of the nozzle.
  • the spray gun with the above-mentioned structure will cause the thimble to move when the trigger is accidentally touched during the construction, and then the thimble will be released from the inner wall of the gun mouth, causing the pressured polyurethane foam to be accidentally sprayed out, causing personal injury, and posing safety risks.
  • a thimble opening adjustment device which can be used to lock the thimble to prevent foaming agent from spraying when the trigger is touched, it takes time and effort to open or close the adjustment, which cannot meet the operator's requirements for convenient use of the spray gun.
  • the present invention provides a spray gun with convenient switch safety.
  • a spray gun with convenient switch switching safety comprising a gun body, a gun mouth, a trigger, a thimble slider and a thimble.
  • the trigger is rotatably connected to the gun body, and the trigger is used for linkage with the thimble slider.
  • the spray gun also includes a safety switch movably fitted to the gun body; when the safety switch is moved to the first position, the safety switch is used to limit the trigger linkage thimble slider; when the safety switch is moved to the first position In the second position, the restriction is released so that the trigger can link the thimble slider.
  • the safety switch includes a switch seat, and the switch seat has an escape part; when the safety switch moves to the second position, the escape part of the switch seat matches the trigger so that the trigger can link the thimble slider; when the safety switch moves to the second position In the first position, the avoiding part of the switch seat is misaligned with the trigger to limit the trigger linkage to the thimble slider.
  • the safety switch further includes a damper, which is located between the gun body and the switch base.
  • the damper includes an elastic member and a positioning member for moving along the axial direction of the elastic member; the elastic member is mounted on the gun body, and both sides of the positioning member compress the elastic member and abut against the switch seat; or, elastic The parts are installed on the switch base, and the two sides of the positioning parts respectively compress the elastic parts and abut against the gun body.
  • the surface of the switch base has a safety positioning file and a safety release positioning file that match the positioning member; or, when the elastic member is installed on the switch base, the gun body has a safety that matches the positioning member.
  • Positioning file and insurance release positioning file when the elastic member is installed on the gun body, the surface of the switch base has a safety positioning file and a safety release positioning file that match the positioning member; or, when the elastic member is installed on the switch base, the gun body has a safety that matches the positioning member.
  • the safety positioning file and the safety release positioning file are respectively any one of a concave hole and a strip groove; the positioning member has an arc surface matching the safety positioning file or the safety release positioning file.
  • the switch base is a push-type switch base, including a sliding base and pressing parts located at both ends of the sliding base, the sliding base has an avoiding part; the gun body has a sliding hole; the sliding base is slidingly fitted to the sliding hole, And it is limited by the pressing parts at both ends.
  • the switch seat is a rotary switch seat
  • the rotary switch seat is a hollow sleeve structure, and both sides of the rotary switch seat are respectively provided with escape parts
  • the gun body has a hollow mounting shaft
  • the rotary switch seat rotates It is fitted outside the hollow mounting shaft
  • the thimble slider is slidingly fitted in the hollow sleeve structure and the hollow mounting shaft.
  • the hollow sleeve structure has an annular limit groove, and the end of the mounting shaft has an undercut part that matches the limit groove.
  • the switch seat is a rotary switch seat
  • the rotary switch seat is a hollow sleeve structure, and both sides of the rotary switch seat are respectively provided with escape parts
  • the gun body has a hollow mounting shaft
  • the rotary switch seat rotates Fitted outside the hollow mounting shaft
  • the thimble slider slidingly fits in the hollow sleeve structure and the hollow mounting shaft
  • the safety positioning gear and the safety release positioning gear are equally divided and paired along the circumferential direction of the rotary switch seat distributed.
  • the present invention has the following beneficial effects:
  • the spray gun with convenient switch switching insurance In the construction process of the spray gun with convenient switch switching insurance, if the spray gun needs to be suspended or resumed, only the safety switch needs to be moved to realize the switch switching. The operation saves time and effort, is convenient and fast, and can be practical for construction workers Eliminate potential safety hazards and provide safety guarantees. Moreover, the spray gun with convenient switch switching insurance of the present invention is convenient to manufacture and assemble, and is convenient for popularization and application.
  • Figure 1 is a schematic structural diagram of a spray gun with convenient switch safety in the first embodiment of the present invention
  • FIG. 2 is a schematic structural view of the gun body of the spray gun with convenient switch safety in the first embodiment of the present invention
  • FIG. 3 is an exploded view of the structure of the safety switch of the spray gun with convenient switch switching safety in the first embodiment of the present invention
  • FIG. 4 is a structural schematic diagram of the sliding seat and the pressing part of the safety switch of the spray gun with convenient switch switching safety according to the first embodiment of the present invention
  • FIG. 5 is a schematic structural view of the cover body of the safety switch of the spray gun with convenient switch switching safety according to the first embodiment of the present invention
  • Fig. 6 is a structural cross-sectional view of the A-A section in Fig. 1 corresponding to the spray gun with convenient switch switching insurance in the fuse-released state of the first embodiment of the present invention
  • Figure 7 is a sectional view of the structure of part B-B in Figure 6;
  • Fig. 8 is a structural cross-sectional view of the A-A section in Fig. 1 corresponding to the spray gun with convenient switch switching insurance in the first embodiment of the present invention in the insurance state;
  • Figure 9 is a cross-sectional view of the structure of part C-C in Figure 8.
  • FIG. 10 is a schematic structural view of the sliding seat and the pressing part of the safety switch of the spray gun with convenient switch switching safety according to the second embodiment of the present invention
  • FIG. 11 is a schematic structural diagram of the spray gun with convenient switch safety in the safety state of the fourth embodiment of the present invention.
  • Figure 12 is a cross-sectional view of the structure of part E-E in Figure 11;
  • Figure 13 is an exploded view of the structure at the safety switch of the spray gun with convenient switch switching safety according to the fourth embodiment of the present invention.
  • FIG. 14 is a schematic structural diagram of a rotary switch base of a spray gun with convenient switch switching insurance according to the fourth embodiment of the present invention.
  • 15 is a schematic structural view of the gun body of the spray gun with convenient switch safety in the fourth embodiment of the present invention.
  • Fig. 16 is an enlarged view of part I in Fig. 15;
  • Figure 17 is a half-sectional view of a rotary switch base of a spray gun with convenient switch switching insurance according to a fourth embodiment of the present invention.
  • Figure 18 is an enlarged view of part II in Figure 17;
  • Figure 19 is a cross-sectional view of the circled part in Figure 11;
  • 20 is a schematic structural view of the spray gun with convenient switch safety in the fourth embodiment of the present invention in the safety release state and the spray state;
  • Figure 21 is a cross-sectional view of the structure of part D-D in Figure 20;
  • FIG. 22 is a schematic structural diagram of a rotary switch base of a spray gun with convenient switch switching insurance according to the fifth embodiment of the present invention.
  • Figure 23 is a schematic structural view of a spray gun with convenient switch fuse according to the sixth embodiment of the present invention.
  • Figure 24 is a sectional view of the structure of part F-F in Figure 23;
  • 25 is a schematic structural diagram of a rotary switch base of a spray gun with convenient switch switching insurance according to the sixth embodiment of the present invention.
  • 26 is a schematic structural view of the gun body of the spray gun with convenient switch safety in the seventh embodiment of the present invention.
  • 27 is a structural cross-sectional view of the connection between the rotary switch base and the gun body of the spray gun with convenient switch safety in the seventh embodiment of the present invention.
  • FIG. 28 is a structural sectional view of a rotary switch base of a spray gun with convenient switch switching insurance according to the seventh embodiment of the present invention.
  • Fig. 29 is a schematic diagram of the structure of the gun body of the spray gun with convenient switch safety in the eighth embodiment of the present invention.
  • the spray gun with convenient switch safety of this embodiment includes a gun body 1, a one-way valve 9, a barrel 8 and a nozzle 7, a thimble and a thimble slider 4, and a seal with a handle 3.
  • Device 6, trigger 5, return spring 11, opening adjustment device 2, and safety switch 10A with convenient push switch switching function.
  • the upper end of the front half of the gun body 1 is provided with a communicating hole, which is connected to a one-way valve 9 fitted with a caulking agent bottle, and the foaming agent under pressure enters the gun body 1 through the communicating hole through the one-way valve 9; 1
  • the through hole at the front end connects the barrel 8 and the nozzle 7, and a sealing device 6 is provided in the through hole at the rear end.
  • the thimble passes through the center of the sealing device and is placed in the barrel 8, and the front end of the thimble closely abuts against the inner wall of the nozzle 7.
  • a closed internal space for the foaming agent to circulate in the front half of the gun body is formed.
  • the rear half of the gun body is provided with a mounting hole for accommodating the thimble slider 4 and the return spring 11 fixedly connected to the thimble.
  • the rear end of the mounting hole is connected with the opening adjustment device 2, and the return spring is compressed on the thimble slider 4 and the opening Between the adjusting devices 2, the spring force reacts to the thimble slider 4 to press the thimble against the inner wall of the gun mouth to seal the gun mouth; the middle of the gun body is equipped with a trigger that can control the foaming agent entering the gun body from the gun mouth. 5.
  • the trigger 5 is connected with the gun body 1 pin, and the trigger 5 rotates within the set range with the pin as the center.
  • the gun body 1 has a sliding hole 1a arranged along the normal direction of the front and rear center of the gun body, and the sliding hole 1a is used for assembling a safety switch 10A with a convenient push switch switching function.
  • the safety switch 10A includes a push-type sliding switch base and a damper matched with the gun body 1;
  • the push-type sliding switch base includes a sliding base 10A1, a cover 10A2 and a pressing portion 10A1a located at both ends of the sliding base 10A1
  • the end of the sliding seat 10A1 opposite to the cover 10A2 has a columnar sliding portion 10A1c for mating and assembly with the cover 10A2.
  • the outer side of the cover 10A2 is the pressing portion 10A2a
  • the inner end surface is provided with a counterbore 10A2c
  • the counterbore 10A2c is fixedly connected to the outer end of the cylindrical sliding portion 10A1c of the sliding seat 10A1, forming a small middle and large end
  • the structure enables the safety switch 10A to slide only between the inner end surface 10A2b of the cover 10A2 and the inner end surface 10A1b of the pressing portion 10A1a without causing it to slip out of the gun body through hole 1a.
  • the end surface of the sliding seat 10A1 opposite to the trigger 5 is provided with a blocking portion 10A1d and two sets of retreat portions 10A1e for accommodating the trigger.
  • the retreat portions 10A1e are of a groove structure.
  • the safety switch 10A makes the sliding seat 10A1 slide left and right along the sliding hole 1a provided in the normal direction of the front and rear center of the gun body 1 by pressing; as shown in Figures 6 and 7, when the safety switch 10A moves to the second position, the sliding seat 10A1
  • the upper blocking portion 10A1d is misaligned with the trigger 5, and its avoiding portion 10A1e corresponds to the trigger 5, so that the trigger 5 can drive the thimble slider 4, and then the trigger 5 opens the gun nozzle 7 to realize the release of the insurance.
  • the damper of this embodiment is located between the counterbore on the top surface of the sliding hole 1a of the gun body and the upper surface of the sliding seat 10A1; the damper includes a compression spring 101 and a positioning ball 102, which is convenient for positioning the ball 102 reciprocates along the axial direction of the compression spring 101.
  • the upper surface of the sliding seat 10A1 is provided with two positioning gears 10A1f that maintain a stable position, which are respectively a safety positioning gear and a safety release positioning gear.
  • the positioning gear 10A1f has a concave hole structure.
  • the concave hole structure of the positioning gear 10A1f of this embodiment is used to match the positioning ball 102, thereby achieving the function of maintaining a stable position.
  • the compression spring 101, the positioning ball 102, and the sliding seat 10A1 are loaded into the gun body 1 in sequence, and the cover 10A2 is fixedly connected with the outer end of the sliding part 10A1c to complete the safety. Assembly of the switch.
  • the positioning ball 102 in the damper sinks into the positioning stop on the right side of the sliding seat 10A1, and under the elastic action of the compression spring 101, without external force,
  • the sliding seat 10A1 maintains a stable position; at this time, the inner end surface 10A1b of the sliding seat 10A1 is in contact with the gun body 1; the two avoiding parts 10A1e on the front end of the sliding seat 10A1 correspond to the back of the trigger 5, so that the trigger 5 is ready to be turned on at any time If you want to perform the foaming agent injection operation, you only need to pull the trigger 5 backward to move the thimble slider 4 back, and the thimble will be separated from the inner wall of the nozzle 7 to open the foaming agent injection channel, and the foaming agent will pass through the gun.
  • the nozzle 7 ejects from the inner hole; if you need to stop the foaming agent injection, just release the trigger 5, the thimble slider 4 is quickly reset under the action of the reset spring 11, and the thimble is pressed against the inner wall of the gun nozzle 7 again to close the foaming agent injection Channel, the nozzle 7 stops spraying foaming agent.
  • the blocking portion 10A1d of the front end surface of the sliding seat 10A1 collides with the trigger 5 earlier than the thimble slider 4, and the trigger 5 is in a blocked state, so that the trigger 5 cannot drive the thimble slider, thereby preventing the trigger 5 from opening the gun nozzle 7, so as to completely avoid the safety hazard of accidental spraying of foam agent from the inner hole of the nozzle 7.
  • the spray gun of this embodiment is convenient to manufacture and assemble, which is convenient for popularization and application.
  • the difference between the spray gun with convenient switch fuse of this embodiment and the first embodiment is that the structure of the positioning gear is different.
  • the two positioning files of this embodiment are two parallel strip grooves 10A1f', and the distribution direction of the strip grooves 10A1f' is perpendicular to the movement direction of the sliding seat; the strip grooves 10A1f' are used for It is matched with the positioning ball of the damper to realize the function of maintaining a stable position.
  • the two positioning files can also be a concave hole and the other strip groove.
  • the positioning ball of the damper can also be replaced with a cylindrical or ellipsoid with a spherical surface and a positioning member with a bottom arc surface; accordingly, the structure of the positioning gear is not limited to the above-listed structure, as long as it can The function of maintaining a stable position can be achieved by matching with the positioning member of the damper.
  • the difference between the spray gun with convenient switch fuse of this embodiment and the first embodiment is that the installation positions of the positioning gear and the damper can be interchanged.
  • the upper surface of the sliding seat has a counterbore for installing the damper; correspondingly, a corresponding positioning stop is provided on the top of the sliding hole of the gun body, which can also realize the function of maintaining a stable position of the sliding seat.
  • the structure of the spray gun is diversified.
  • the spray gun with convenient switch switching safety in this embodiment is different from the first embodiment in that the structure of the safety switch and the connection structure with the gun body are different.
  • the safety switch 10B of this embodiment includes a rotary switch base 10B1 and a damper matched with the gun body 1B.
  • the rotary switch base 10B1 is a hollow sleeve structure, and its front end has a convex-shaped switch part.
  • the switch part is preferably cylindrical, and its cross-sectional shape is preferably rectangular, oblate, oblong or waisted. Oval and other shapes, followed by square, and again hexagon.
  • the switch part in this embodiment is an oblate cylindrical switch part, with blocking parts 10B1a oppositely arranged in the longer length direction of the opposite sides, and the recessed area outside the blocking part 10B1a constitutes the avoiding part;
  • the switch part of the outer convex structure of the rotary switch base 10B1 is adapted to the concave "U"-shaped bent trigger, and the length of the blocking part 10B1a is greater than the width of the bent part of the trigger which it abuts.
  • the rotary switch base 10B1 is provided with a through hole 10B1c in the axial direction so as to be rotatably sleeved on the gun body 1B; specifically, as shown in Figures 14-15, the front end of the rear half of the gun body 1B is provided with a
  • the hollow mounting shaft 1Ba, the hollow mounting shaft 1Ba, and the hollow structure of the rotary switch seat 10B1 in the through holes 10B1c of the switch seat are sleeved with each other for the thimble and the thimble slider 4 to pass through.
  • the outer end of the hollow mounting shaft 1Ba has an annular undercut portion 1Ba1 with a guide.
  • the inner hole of the rotary switch base 10B1 can be elastically opened, and is provided with an annular limit groove 10B1d, the limit groove 10B1d and the annular undercut portion 1Ba1 of the hollow mounting shaft limit Position fit, so that the rotary switch seat will not detach by itself after being inserted into the hollow mounting shaft.
  • the rotary switch base 10B1 is provided with equal-division positioning gears 10B1b along its circumferential direction.
  • the number of equal-division positioning gears is preferably one to three pairs arranged in pairs.
  • the number of positioning gears in this embodiment There are two pairs, as shown in Figure 14, the positioning files distributed up and down are a pair, and the positioning files distributed on the left and right are a pair.
  • the two pairs of positioning files are the safety positioning files and the safety release positioning files; It is easy to match with the damper.
  • the gun body 1B is provided with a counterbore 1Bb for accommodating the damper.
  • the damper is between the gun body 1B and the rotary switch base 10B1; as shown in Figures 13 and 19, this embodiment
  • the damper includes an elastic member and a positioning member, the elastic member is a compression spring 101, and the positioning member is a positioning ball 102, which is convenient for the positioning ball 102 to move back and forth along the axial direction of the compression spring 101.
  • the positioning ball 102 corresponds to the positioning file 10B1b on the rotary switch base 10B1. Relying on the rebound force generated by the compression of the compression spring 101, it acts on the corresponding positioning file 10B1b of the rotary switch base 10B1, so that the rotary switch base 10B1 is in position The position remains stable when either the insurance or the insurance is released.
  • the rotary switch base 10B1 of this embodiment is rotated to the first position by turning (as shown in Figures 11 and 12), so that the blocking portion 10B1a at the front end collides with the trigger 5 earlier than the thimble slider, so that the trigger 5 cannot be driven.
  • the thimble slider 4 prevents the trigger 5 from opening the gun nozzle 7; when the rotary switch base 10B1 is rotated to the second position by turning, the blocking portion 10B1a at its front end is misaligned with the trigger 5 and does not conflict with each other, so that the trigger 5 is at any time In the free state to be opened, when the trigger 5 is pulled, the thimble slider can be driven to move backward (as shown in FIGS. 20 and 21), so that the trigger 5 can open the gun nozzle 7.
  • the compression spring 101, the positioning ball 102, and the rotary switch base 10B1 are installed into the gun body 1B in sequence to complete the assembly of the safety switch.
  • the positioning ball 102 of the damper sinks into the positioning gear 10B1b of the rotary switch base 10B1, and under the elastic action of the compression spring 101, the rotary switch base 10B1 can maintain a stable position; at this time, the rotary switch base
  • the blocking portion 10B1a of the 10B1 and the trigger 5 are misaligned and do not interfere with each other, so that the trigger 5 is in a free state to be opened at any time; at this time, pull the trigger 5 backward to move the thimble slider backward, and the thimble 4 will be separated from the inner wall of the gun mouth 7 , Open the foaming agent injection channel, the foaming agent is sprayed out through the inner hole of the nozzle 7.
  • the thimble slider will quickly reset under the action of the reset spring 11, and the thimble 4 will be pressed against the inner wall of the nozzle 7 again to close the foaming agent injection channel, and the foaming agent will stop from the gun immediately.
  • the nozzle 7 ejects from the inner hole.
  • the positioning ball 102 in the damper is squeezed upward from the current positioning gear 10B1b, which causes the compression spring 101 to be further compressed.
  • the positioning ball 102 slides into the positioning gear, and under the elastic action of the compression spring 101, after the external force is removed, the rotary switch base 10B1 can maintain a stable position.
  • the blocking portion 10B1a of the front face of the rotary switch base 10B1 collides with the trigger 5 earlier than the thimble slider, so that the trigger 5 is in a blocked state, so that the trigger 5 cannot drive the thimble slider, thereby preventing the trigger 5 from opening the gun Nozzle 7, thereby completely avoiding the safety hazard of accidental spraying of foam agent from the inner hole of the nozzle 7.
  • the difference between the spray gun with convenient switch fuse of this embodiment and the fourth embodiment is that the structure of the positioning gear is different.
  • the positioning gear of this embodiment is a strip-shaped groove 10B1b', and the strip-shaped groove 10B1b' is used to match the positioning ball of the damper to achieve the function of maintaining a stable position.
  • all the positioning files can also be a free combination of concave holes and strip grooves.
  • the positioning ball of the damper can also be replaced with a cylindrical or ellipsoid with a spherical surface and a positioning member with a bottom arc surface; accordingly, the structure of the positioning gear is not limited to the above-listed structure, as long as it can The function of maintaining a stable position can be achieved by matching with the positioning member of the damper.
  • Embodiment 6 is a diagrammatic representation of Embodiment 6
  • the spray gun with convenient switch safety of this embodiment is different from the fourth embodiment in that the matching structure between the trigger and the rotary switch base is different.
  • the trigger back of this embodiment is a solid or convex structure
  • the preferred back of this embodiment is a trigger 5'with a solid structure
  • the rotary switch base 10B1' has The trigger 5'corresponds to the switch part with a concave structure; as shown in FIG.
  • the switch part of the rotary switch base 10B1' of this embodiment is a "U" shape, and both ends of the "U” shape are blocking parts 10B1 'a, the width of the "U"-shaped inner space is greater than the width of the trigger, that is, the size of the avoiding portion is greater than the width of the trigger; when the "U"-shaped blocking portion 10B1'a at both ends of the rotary switch base 10B1' rotates to a horizontal position , The trigger 5'is in a free state to be turned on at any time.
  • the difference between the spray gun with convenient switch fuse of this embodiment and the fourth embodiment is that the installation positions of the positioning gear and the damper can be interchanged.
  • the hollow mounting shaft on the gun body 1C is provided with an equally divided positioning gear 1Ca along its circumferential direction, and the positioning gear 1Ca has a concave structure; accordingly, as shown in Figure 28,
  • the rotary switch base 10C1 has a counterbore 10C1a for installing the damper, and can also realize the function of maintaining a stable position of the rotary switch base.
  • the number of the counterbore 10C1a may be one, or two, and may also be the same as the number of the positioning files.
  • the structure of the spray gun is diversified.
  • Embodiment 8 is a diagrammatic representation of Embodiment 8
  • the difference between the spray gun with convenient switch fuse of this embodiment and the seventh embodiment is that the structure of the positioning gear is different.
  • the positioning gear of this embodiment is a strip-shaped groove 1Ca', which is used to match the positioning ball of the damper to achieve the function of maintaining a stable position.
  • the positioning files can be arbitrarily combined between the concave hole structure and the strip groove.
  • the positioning ball of the damper can also be replaced with a cylindrical or ellipsoid with a spherical surface and a positioning member with a bottom arc surface; accordingly, the structure of the positioning gear is not limited to the above-listed structure, as long as it can The function of maintaining a stable position can be achieved by matching with the positioning member of the damper.
  • the structural design of the positioning gear can be omitted, and the structural design of the damper can also be omitted to simplify the structure of the spray gun to meet different application requirements.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
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Abstract

一种具备便捷开关切换保险的喷枪，包括枪体（1）、枪嘴（7）、扳机（5）、顶针及顶针滑块（4），扳机（5）转动连接于枪体（1），扳机（5）用于联动顶针滑块（4），顶针滑块（4）用于联动顶针以开启枪嘴（7），所述喷枪还包括活动配合于枪体（1）的保险开关（10A）；当保险开关（10A）活动至第一位置，所述保险开关（10A）用于限制扳机（5）联动顶针滑块（4）；当保险开关（10A）活动至第二位置，限制解除以使扳机（5）能联动顶针滑块（4）。该喷枪具备便捷开关切换保险的喷枪在施工过程中，若需要暂停或恢复喷枪使用时，只需对保险开关（10A）进行活动操作以实现开关切换，操作省时省力、方便快捷，切实能为施工人员消除安全隐患、提供安全保障。

Description

一种具备便捷开关切换保险的喷枪 技术领域
本发明属于喷枪技术领域，具体涉及一种具备便捷开关切换保险的喷枪。
背景技术
由于聚氨酯泡沫剂固化泡沫弹性体具有粘结、防水、耐热胀冷缩、隔热、隔音甚至阻燃(限阻燃型)等优良性能，被广泛地应用于工业生产和日常民用之中。瓶装的聚氨酯泡沫剂，是将聚氨酯预聚物、催化剂及气体抛射剂灌装于耐压的铁制气雾罐中，也称聚氨酯泡沫填缝剂，是一种单组分、湿气固化、多用途的聚氨酯发泡填充弹性密封材料。施工时通过配套施胶枪或手动喷管将气雾状胶体喷射至待施工部位，短期完成发泡、粘结、成型和密封的过程，加之其便于存储携带和易于使用，因此广泛用于建筑门窗边缝、构件伸缩缝及孔洞处的填充密封，与其配套使用的喷枪或喷管也随之应运而生，并且喷枪的款式也越来越多。
常见的聚氨酯泡沫填缝剂喷枪一般包括带有握把的枪体、单向阀、枪管和枪嘴、顶针及滑块组件、密封装置、扳机、复位弹簧以及开度调节装置。枪体前半部上端设有一孔，该孔连接与填缝剂瓶适配的单向阀，有压力的泡沫剂通过单向阀由该孔进入枪体内；枪体前端的通孔连接枪管和枪嘴，后端通孔内设有密封装置，顶针沿密封装置中心穿过并置于枪管内，顶针前端与枪嘴内壁紧密相抵，形成枪体前半部供泡沫剂流通的密闭内部空间。枪体后半部设有容纳与顶针固连的滑块和复位弹簧的通孔，该通孔后端与开度调节装置连接，复位弹簧被压缩于顶针滑块和开度调节装置之间，弹簧力反作用于顶针滑块将顶针抵住枪嘴内壁，起到密封枪嘴的目的；枪体中部设有可控制进入枪体的泡沫剂由枪嘴喷出的扳机，扳机与枪体销连接，扳机以销为圆心在设定的范围内转动。使用时，向后扳动扳机使顶针滑块后移，顶针随即与枪嘴内壁脱开，开启泡沫剂喷射的通道，泡沫剂即经枪嘴内孔喷出。使用完后，松开扳机，顶针在复位弹簧作用下复位，重新抵住枪嘴内壁，封闭泡沫剂的喷射通道，泡沫剂旋即停止从枪嘴内孔喷出。
上述这种结构的喷枪，在施工中不小心触动扳机时会导致其带动顶针联动，进而使顶针脱开枪嘴内壁，导致有压力的聚氨酯泡沫剂意外喷出而造成人身伤害，存在安全隐患。尽管其具备顶针开度调节装置，可以用来锁定顶针，防止触动扳机时泡沫剂喷出，但开启或关闭调节时费时费力，无法满足操作者对喷枪使用便捷的要求。
发明内容
基于现有技术中存在的上述不足，本发明提供一种具备便捷开关切换保险的喷枪。
为了达到上述发明目的，本发明采用以下技术方案：
一种具备便捷开关切换保险的喷枪，包括枪体、枪嘴、扳机、顶针滑块及顶针，所述扳机转动连接 于枪体，所述扳机用于联动顶针滑块，所述顶针滑块用于联动顶针以开启枪嘴，所述喷枪还包括活动配合于枪体的保险开关；当保险开关活动至第一位置，所述保险开关用于限制扳机联动顶针滑块；当保险开关活动至第二位置，所述限制解除以使扳机能联动顶针滑块。
作为优选方案，所述保险开关包括开关座，开关座具有避让部；当保险开关活动至第二位置，开关座的避让部与扳机相配，以使扳机能联动顶针滑块；当保险开关活动至第一位置，开关座的避让部与扳机错位，以限制扳机联动顶针滑块。
作为优选方案，所述保险开关还包括阻尼器，所述阻尼器位于枪体与开关座之间。
作为优选方案，所述阻尼器包括弹性件和用于沿弹性件的轴向活动的定位件；弹性件安装于枪体，定位件的两侧分别压缩弹性件和抵靠开关座；或者，弹性件安装于开关座，定位件的两侧分别压缩弹性件和抵靠枪体。
作为优选方案，当弹性件安装于枪体，开关座的表面具有与定位件相配的保险定位档和保险解除定位档；或者，当弹性件安装于开关座，枪体具有与定位件相配的保险定位档和保险解除定位档。
作为优选方案，所述保险定位档和保险解除定位档分别为凹孔、条形槽中的任一种；所述定位件具有与保险定位档或保险解除定位档相配的弧面。
作为优选方案，所述开关座为按压式开关座，包括滑座和位于滑座两端的按压部，滑座具有避让部；所述枪体具有滑孔；所述滑座滑动配合于滑孔，且以其两端的按压部限位。
作为优选方案，所述开关座为旋转式开关座，所述旋转式开关座为中空套筒结构，其两侧分别具有避让部；所述枪体具有中空安装轴；所述旋转式开关座转动配合于中空安装轴之外；所述顶针滑块滑动配合于中空套筒结构及中空安装轴之内。
作为优选方案，所述中空套筒结构内具有环形的限位槽，所述安装轴的端部具有与限位槽相配的倒扣部。
作为优选方案，所述开关座为旋转式开关座，所述旋转式开关座为中空套筒结构，其两侧分别具有避让部；所述枪体具有中空安装轴；所述旋转式开关座转动配合于中空安装轴之外；所述顶针滑块滑动配合于中空套筒结构及中空安装轴之内；所述保险定位档和保险解除定位档沿旋转式开关座的周向等分且成对分布。
本发明与现有技术相比，有益效果是：
本发明的具备便捷开关切换保险的喷枪在施工过程中，若需要暂停或恢复喷枪使用时，只需对保险开关进行活动操作以实现开关切换，操作省时省力、方便快捷，切实能为施工人员消除安全隐患、提供安全保障。而且，本发明的具备便捷开关切换保险的喷枪制造和装配便捷，便于推广应用。
附图说明
图1是本发明实施例一的具备便捷开关切换保险的喷枪的结构示意图；
图2是本发明实施例一的具备便捷开关切换保险的喷枪的枪体的结构示意图；
图3是本发明实施例一的具备便捷开关切换保险的喷枪的保险开关处的结构爆炸图；
图4是本发明实施例一的具备便捷开关切换保险的喷枪的保险开关的滑座及按压部的结构示意图；
图5是本发明实施例一的具备便捷开关切换保险的喷枪的保险开关的盖体的结构示意图；
图6是本发明实施例一的具备便捷开关切换保险的喷枪处于保险解除状态时对应的图1中的A-A部的结构剖面图；
图7是图6中的B-B部的结构剖视图；
图8是本发明实施例一的具备便捷开关切换保险的喷枪处于保险状态时对应的图1中的A-A部的结构剖面图；
图9是图8中的C-C部的结构剖视图；
图10是本发明实施例二的具备便捷开关切换保险的喷枪的保险开关的滑座及按压部的结构示意图；
图11是本发明实施例四的具备便捷开关切换保险的喷枪处于保险状态的结构示意图；
图12是图11中的E-E部的结构剖面图；
图13是本发明实施例四的具备便捷开关切换保险的喷枪的保险开关处的结构爆炸图；
图14是本发明实施例四的具备便捷开关切换保险的喷枪的旋转式开关座的结构示意图；
图15是本发明实施例四的具备便捷开关切换保险的喷枪的枪体的结构示意图；
图16是图15中的I部放大图；
图17是本发明实施例四的具备便捷开关切换保险的喷枪的旋转式开关座的半剖图；
图18是图17中的Ⅱ部放大图；
图19是图11中的圆圈部的剖面图；
图20是本发明实施例四的具备便捷开关切换保险的喷枪处于保险解除状态和喷射状态的结构示意图；
图21是图20中的D-D部的结构剖面图；
图22是本发明实施例五的具备便捷开关切换保险的喷枪的旋转式开关座的结构示意图；
图23是本发明实施例六的具备便捷开关切换保险的喷枪的结构示意图；
图24是图23中的F-F部的结构剖面图；
图25是本发明实施例六的具备便捷开关切换保险的喷枪的旋转式开关座的结构示意图；
图26是本发明实施例七的具备便捷开关切换保险的喷枪的枪体的结构示意图；
图27是本发明实施例七的具备便捷开关切换保险的喷枪的旋转式开关座与枪体连接处的结构剖面图；
图28是本发明实施例七的具备便捷开关切换保险的喷枪的旋转式开关座的结构剖面图；
图29是本发明实施例八的具备便捷开关切换保险的喷枪的枪体的结构示意图。
具体实施方式
为了更清楚地说明本发明实施例，下面将对照附图说明本发明的具体实施方式。显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图，并获得其他的实施方式。另外，以下实施例中所提到的方向用语，例如：上、下、左、右、前或后等，仅是参考附图的方向。因此，使用的方向用语是用来说明并 非用来限制本发明。
实施例一：
如图1所示，本实施例的具备便捷开关切换保险的喷枪，包括带有握把3的枪体1、单向阀9、枪管8和枪嘴7、顶针及顶针滑块4、密封装置6、扳机5、复位弹簧11、开度调节装置2以及具备便捷按压式开关切换功能的保险开关10A。枪体1的前半部上端具有连通孔，该连通孔连接与填缝剂瓶适配的单向阀9，有压力的泡沫剂通过单向阀9由该连通孔进入枪体1内；枪体1前端的通孔连接枪管8和枪嘴7，后端通孔内设有密封装置6，顶针沿密封装置中心穿过并置于枪管8内，顶针前端与枪嘴7内壁紧密相抵，形成枪体前半部供泡沫剂流通的密闭内部空间。枪体后半部设有容纳与顶针固连的顶针滑块4和复位弹簧11的安装孔，该安装孔后端与开度调节装置2连接，复位弹簧被压缩于顶针滑块4和开度调节装置2之间，弹簧力反作用于顶针滑块4将顶针抵住枪嘴内壁，起到密封枪嘴的目的；枪体中部设有可控制进入枪体的泡沫剂由枪嘴喷出的扳机5，扳机5与枪体1销连接，扳机5以销为圆心在设定的范围内转动。使用时，向后扳动扳机5使顶针滑块4后移，顶针随即与枪嘴内壁脱开，开启泡沫剂喷射的通道，泡沫剂即经枪嘴内孔喷出。使用完后，松开扳机5，顶针在复位弹簧11作用下复位，重新抵住枪嘴内壁，封闭泡沫剂的喷射通道，泡沫剂旋即停止从枪嘴内孔喷出。
如图2所示，枪体1具有沿枪体前后中心法向所设的滑孔1a，滑孔1a用于装配具备便捷按压式开关切换功能的保险开关10A。如图3-5所示，保险开关10A包括与枪体1配套的按压式滑动开关座和阻尼器；按压式滑动开关座包括滑座10A1和位于滑座10A1两端的盖体10A2和按压部10A1a，其中，滑座10A1与盖体10A2相对的一端具有柱状滑动部10A1c，以便与盖体10A2对接装配。其中，如图5所示，盖体10A2的外侧为按压部10A2a，内端面设有沉孔10A2c，沉孔10A2c与滑座10A1的柱状滑动部10A1c外端固定连接，形成中间小两端大的结构，使得保险开关10A只能在盖体10A2的内侧端面10A2b与按压部10A1a的内侧端面10A1b之间滑动，而不会导致其从枪体通孔1a中滑脱。
如图4所示，滑座10A1上与扳机5相对的端面设有阻挡部10A1d和两组容纳扳机的避让部10A1e，避让部10A1e为凹槽结构。保险开关10A通过按压的方式使得滑座10A1沿枪体1前后中心法向所设的滑孔1a左右滑动；如图6和7所示，当保险开关10A活动至第二位置，其滑座10A1上的阻挡部10A1d与扳机5错位，而使其避让部10A1e与扳机5相对应，使得扳机5能带动顶针滑块4，进而让扳机5开启枪嘴7，实现保险的解除。另外，如图8和9所示，当保险开关10A活动至第一位置，其滑座的阻挡部10A1d与扳机5比顶针滑块4率先相抵触，即避让部10A1e与扳机5错位，致使扳机5无法带动顶针滑块4，进而阻止扳机5开启枪嘴7，实现保险功能。
如图3所示，本实施例的阻尼器位于枪体的滑孔1a的顶面沉孔和滑座10A1的上表面之间；阻尼器包括压簧101和定位圆球102，便于定位圆球102沿压簧101轴向往复移动。另外，如图4所示，滑座10A1的上表面开设有两个保持位置稳定功能的定位档10A1f，分别为保险定位档和保险解除定位档，定位档10A1f为凹孔结构。本实施例的定位档10A1f的凹孔结构用于与定位圆球102相配，从而实现保持位置稳定功能。
本实施例的具备便捷开关切换保险的喷枪，依次将压簧101、定位圆球102、滑座10A1装入枪体1 并将盖体10A2与滑动部10A1c外端固定连接后，即可完成保险开关的装配。正常使用时，如图6和7所示，阻尼器中的定位圆球102陷入滑座10A1的右侧的定位档，并且在压簧101的弹性作用下，在没有外力的作用下，能让滑座10A1保持位置稳定；此时，滑座10A1的内端面10A1b与枪体1接触；滑座10A1前端面的两个避让部10A1e与扳机5的背部对应，如此，扳机5即处于随时待开启的自由状态；若要进行泡沫剂喷射操作，只需向后扳动扳机5使顶针滑块4后移，顶针随即与枪嘴7内壁脱开，开启泡沫剂喷射的通道，泡沫剂即经枪嘴7内孔喷出；如需停止泡沫剂喷射，只需松开扳机5，顶针滑块4在复位弹簧11的作用下迅速复位，将顶针重新抵住枪嘴7内壁，封闭泡沫剂的喷射通道，则枪嘴7停止喷出泡沫剂。
反之，若需要暂停使用喷枪，如图8和9所示，只需按压盖体10A2的按压部10A2a，在外部按压推力的作用下，带动滑座10A1向右移动，此时阻尼器的定位圆球102从右侧的定位档中被向上挤出，进而导致压簧101被进一步压缩，当盖体10A2的内端面10A2b与枪体1接触时，正好使得定位圆球102滑入滑座10A1的左侧的定位档，并且在压簧101的弹性作用下，在外力卸去后，又能让滑座10A1保持位置稳定。此时，滑座10A1前端面的阻挡部10A1d与扳机5比顶针滑块4率先相抵触，则扳机5就处于被阻止的状态，致使扳机5无法带动顶针滑块，进而阻止扳机5开启枪嘴7，从而彻底避免泡沫剂从枪嘴7内孔意外喷出的安全隐患。
当需要再次开启扳机时，只需按压滑座10A1将其切换恢复到初始位置即可，开关切换操作省时省力、方便快捷。
本实施例的具备便捷开关切换保险的喷枪在施工过程中，若需要暂停或恢复喷枪使用时，只需对保险开关进行活动操作以实现开关切换，操作省时省力、方便快捷，切实能为施工人员消除安全隐患、提供安全保障。而且，本实施例的喷枪制造和装配便捷，便于推广应用。
实施例二：
本实施例的具备便捷开关切换保险的喷枪与实施例一的不同之处在于：定位档的结构不同。
具体地，如图10所示，本实施例的两个定位档为两条平行的条形槽10A1f’，条形槽10A1f’的分布方向与滑座的活动方向垂直；条形槽10A1f’用于与阻尼器的定位圆球相配，实现保持位置稳定功能。作为其它实施方案，两个定位档还可以为一个凹孔，另一个条形槽。另外，阻尼器的定位圆球还可以替换为带有球面的柱体或者椭圆体等具有底部弧面的定位件均可；相应地，定位档的结构也不限于上述所列的结构，只要能与阻尼器的定位件相配能实现保持位置稳定的功能即可。
其它结构可以参考实施例一。
实施例三：
本实施例的具备便捷开关切换保险的喷枪与实施例一的不同之处在于：定位档与阻尼器的安装位置可以互换。
具体地，滑座的上表面具有沉孔，用于安装阻尼器；相应地，在枪体的滑孔的顶部开设相应地定位档，也能实现滑座的保持位置稳定的功能。实现喷枪的结构多样化。
其它结构可以参考实施例一。
实施例四：
本实施例的具备便捷开关切换保险的喷枪与实施例一的不同之处在于：保险开关的结构以及与枪体的连接结构不同。
如图11和12所示，本实施例的具备便捷开关切换保险的喷枪的主体结构及相应的数字标号与实施例一保持一致，在此不赘述。不同之处在于：本实施例的保险开关10B包括与枪体1B配套的旋转式开关座10B1和阻尼器。
旋转式开关座10B1为中空套筒结构，其前端面具有外凸形结构的开关部，开关部优选为柱状，其截面形状优选为长和宽不等的长方形、扁圆形、长腰形或椭圆形等形状，其次是正方形，再次是六方形。如图13-14所示，本实施例中的为扁圆形柱状开关部，在其对边较长的长度方向相对设有阻挡部10B1a，阻挡部10B1a之外的内凹区域构成避让部；旋转开关座10B1的外凸形结构的开关部适配于内凹的“U”形折弯的扳机，阻挡部10B1a的长度大于扳机折弯部与其所抵触的宽度。另外，旋转式开关座10B1轴向设有通孔10B1c，以便旋转地套设于枪体1B上；具体地，如图14-15所示，枪体1B后半部的前端设有用与旋转式开关座的通孔10B1c相互套设的中空安装轴1Ba，中空安装轴1Ba以及旋转式开关座10B1的中空结构可供顶针及顶针滑块4从中穿过。另外，如图15所示，中空安装轴1Ba的外端具有带导向的环形倒扣部1Ba1。另外，如图16和图17所示，所述旋转式开关座10B1内孔能弹性张开，并设有环形的限位槽10B1d，限位槽10B1d与中空安装轴的环形倒扣部1Ba1限位配合，使得旋转式开关座套入中空安装轴后即不会自行脱离。
如图14所示，旋转式开关座10B1沿其周向开设有等分度的定位档10B1b，等分度的定位档的数量优选为一至三对成对设置，本实施例中定位档的数量为二对，如图14所示，上下分布的定位档为一对，左右分布的定位档为一对，两对定位档分别为保险定位档和保险解除定位档；定位档为凹孔结构，便于与阻尼器相配。如图15和19所示，枪体1B上设有用于容纳阻尼器的沉孔1Bb，阻尼器介于枪体1B和旋转式开关座10B1之间；如图13和19所示，本实施例的阻尼器包括弹性件和定位件，弹性件为压簧101，定位件为定位圆球102，便于定位圆球102沿压簧101轴向往复移动。定位圆球102与旋转式开关座10B1上的定位档10B1b对应，依靠压簧101被压缩产生的反弹力，作用于旋转式开关座10B1的相对应的定位档10B1b，使得旋转式开关座10B1处于保险或保险解除这两种任一状态时的位置保持稳定。
本实施例的旋转式开关座10B1通过拨动旋转至第一位置(如图11和12所示)，使得其前端的阻挡部10B1a与扳机5比顶针滑块率先相抵触，致使扳机5无法带动顶针滑块4，进而阻止扳机5开启枪嘴7；当旋转式开关座10B1通过拨动旋转至第二位置，使得其前端的阻挡部10B1a与扳机5错位而不相互抵触，使扳机5处于随时待开启的自由状态，扳动扳机5时可带动顶针滑块向后移动(如图20和21所示)，进而让扳机5开启枪嘴7。
本实施例的具备便捷开关切换保险的喷枪，依次将压簧101、定位圆球102、旋转式开关座10B1装入枪体1B，即可完成保险开关的装配。正常使用时，阻尼器的定位圆球102陷入旋转式开关座10B1的定位档10B1b，并且在压簧101的弹性作用下，能让旋转式开关座10B1保持位置稳定；此时，旋转式 开关座10B1的阻挡部10B1a与扳机5错位而不相互抵触，使扳机5处于随时待开启的自由状态；此时向后扳动扳机5使顶针滑块后移，顶针4随即与枪嘴7内壁脱开，开启泡沫剂喷射的通道，泡沫剂即经枪嘴7内孔喷出。如需停止泡沫剂喷射，只需松开扳机5，顶针滑块在复位弹簧11作用下迅速复位，将顶针4重新抵住枪嘴7内壁，封闭泡沫剂的喷射通道，泡沫剂随即停止从枪嘴7内孔喷出。
反之，若需要暂停喷枪使用，只需将旋转式开关座10B1沿径向旋转，此时阻尼器中的定位圆球102从当前定位档10B1b中被向上挤出，进而导致压簧101被进一步压缩，当旋转至相邻的定位档，正好使得定位圆球102滑入该定位档，并且在压簧101的弹性作用下，在外力卸去后，又能让旋转式开关座10B1保持位置稳定。此时，旋转式开关座10B1前端面的阻挡部10B1a与扳机5比顶针滑块率先相抵触，这样扳机5就处于被阻止的状态，致使扳机5无法带动顶针滑块，进而阻止扳机5开启枪嘴7，从而彻底避免泡沫剂从枪嘴7内孔意外喷出的安全隐患。
而当需要再次开启扳机5时，只需再次将旋转式开关座10B1旋转切换到相邻定位档位置即可，开关切换操作省时省力、方便快捷。
实施例五：
本实施例的具备便捷开关切换保险的喷枪与实施例四的不同之处在于：定位档的结构不同。
具体地，如图22所示，本实施例的定位档为条形槽10B1b’，条形槽10B1b’用于与阻尼器的定位圆球相配，实现保持位置稳定功能。作为其它实施方案，所有的定位档还可以为凹孔与条形槽的自由组合。另外，阻尼器的定位圆球还可以替换为带有球面的柱体或者椭圆体等具有底部弧面的定位件均可；相应地，定位档的结构也不限于上述所列的结构，只要能与阻尼器的定位件相配能实现保持位置稳定的功能即可。
其它结构可以参考实施例四。
实施例六：
本实施例的具备便捷开关切换保险的喷枪与实施例四的不同之处在于：扳机与旋转式开关座之间相配的结构不同。
具体地，如图23-25所示，本实施例的扳机背部为实心或外凸结构，本实施例优选为的背部为实心结构的扳机5’，对应地，旋转式开关座10B1’具有与扳机5’对应的带内凹形结构的开关部；如图25所示，本实施例的旋转式开关座10B1’的开关部为“U”形，“U”形的两端为阻挡部10B1’a，其“U”形内空宽度大于扳机的宽度，即避让部的尺寸大于扳机的宽度；当旋转式开关座10B1’两端的“U”形阻挡部10B1’a旋转至处于水平位置时，扳机5’处于随时待开启的自由状态。而当旋转式开关座10B1’两端的“U”形阻挡部10B1’a旋转至处于上下位置时，该阻挡部两端与扳机5’的背部比顶针滑块率先相抵触，致使扳机5’无法带动顶针滑块，进而阻止扳机5’开启枪嘴。实现喷枪结构多样化。
其它结构可以参考实施例四。
实施例七：
本实施例的具备便捷开关切换保险的喷枪与实施例四的不同之处在于：定位档与阻尼器的安装位置可以互换。
具体地，如图26-27所示，枪体1C上的中空安装轴沿其周向开设有等分度的定位档1Ca，定位档1Ca为凹孔结构；相应地，如图28所示，旋转式开关座10C1具有用于安装阻尼器的沉孔10C1a，也能实现旋转式开关座的保持位置稳定的功能。其中，沉孔10C1a的数量可以为一个，也可以为两个，也可以与定位档的数量一致。实现喷枪的结构多样化。
其它结构可以参考实施例四。
实施例八：
本实施例的具备便捷开关切换保险的喷枪与实施例七的不同之处在于：定位档的结构不同。
具体地，如图29所示，本实施例的定位档为条形槽1Ca’，条形槽1Ca’用于与阻尼器的定位圆球相配，实现保持位置稳定功能。作为其它实施方案，各定位档可以在凹孔结构与条形槽之间任意组合。另外，阻尼器的定位圆球还可以替换为带有球面的柱体或者椭圆体等具有底部弧面的定位件均可；相应地，定位档的结构也不限于上述所列的结构，只要能与阻尼器的定位件相配能实现保持位置稳定的功能即可。
其它结构可以参考实施例七。
实施例九：
本实施例的具备便捷开关切换保险的喷枪与上述实施例的不同之处在于：
可以省略定位档的结构设计，还可以省略阻尼器的结构设计，简化喷枪的结构，以满足不同的应用需求。
其它结构可以参考上述实施例。
以上所述仅是对本发明的优选实施例及原理进行了详细说明，对本领域的普通技术人员而言，依据本发明提供的思想，在具体实施方式上会有改变之处，而这些改变也应视为本发明的保护范围。

Claims (10)

  1. 一种具备便捷开关切换保险的喷枪，包括枪体、枪嘴、扳机、顶针滑块及顶针，所述扳机转动连接于枪体，所述扳机用于联动顶针滑块，所述顶针滑块用于联动顶针以开启枪嘴，其特征在于，所述喷枪还包括活动配合于枪体的保险开关；当保险开关活动至第一位置，所述保险开关用于限制扳机联动顶针滑块；当保险开关活动至第二位置，所述限制解除以使扳机能联动顶针滑块。
  2. 根据权利要求1所述的一种具备便捷开关切换保险的喷枪，其特征在于，所述保险开关包括开关座，开关座具有避让部；当保险开关活动至第二位置，开关座的避让部与扳机相配，以使扳机能联动顶针滑块；当保险开关活动至第一位置，开关座的避让部与扳机错位，以限制扳机联动顶针滑块。
  3. 根据权利要求2所述的一种具备便捷开关切换保险的喷枪，其特征在于，所述保险开关还包括阻尼器，所述阻尼器位于枪体与开关座之间。
  4. 根据权利要求3所述的一种具备便捷开关切换保险的喷枪，其特征在于，所述阻尼器包括弹性件和用于沿弹性件的轴向活动的定位件；弹性件安装于枪体，定位件的两侧分别压缩弹性件和抵靠开关座；或者，弹性件安装于开关座，定位件的两侧分别压缩弹性件和抵靠枪体。
  5. 根据权利要求4所述的一种具备便捷开关切换保险的喷枪，其特征在于，当弹性件安装于枪体，开关座的表面具有与定位件相配的保险定位档和保险解除定位档；或者，当弹性件安装于开关座，枪体具有与定位件相配的保险定位档和保险解除定位档。
  6. 根据权利要求5所述的一种具备便捷开关切换保险的喷枪，其特征在于，所述保险定位档和保险解除定位档分别为凹孔、条形槽中的任一种；所述定位件具有与保险定位档或保险解除定位档相配的弧面。
  7. 根据权利要求2-6任一项所述的一种具备便捷开关切换保险的喷枪，其特征在于，所述开关座为按压式开关座，包括滑座和位于滑座两端的按压部，滑座具有避让部；所述枪体具有滑孔；所述滑座滑动配合于滑孔，且以其两端的按压部限位。
  8. 根据权利要求2-4任一项所述的一种具备便捷开关切换保险的喷枪，其特征在于，所述开关座为旋转式开关座，所述旋转式开关座为中空套筒结构，其两侧分别具有避让部；所述枪体具有中空安装轴；所述旋转式开关座转动配合于中空安装轴之外；所述顶针滑块滑动配合于中空套筒结构及中空安装轴之内。
  9. 根据权利要求8所述的一种具备便捷开关切换保险的喷枪，其特征在于，所述中空套筒结构内具有环形的限位槽，所述安装轴的端部具有与限位槽相配的倒扣部。
  10. 根据权利要求5或6所述的一种具备便捷开关切换保险的喷枪，其特征在于，所述开关座为旋转式开关座，所述旋转式开关座为中空套筒结构，其两侧分别具有避让部；所述枪体具有中空安装轴；所述旋转式开关座转动配合于中空安装轴之外；所述顶针滑块滑动配合于中空套筒结构及中空安装轴之内；所述保险定位档和保险解除定位档沿旋转式开关座的周向等分且成对分布。
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