CN218364527U

CN218364527U - Quick-change gun nozzle of fastener striking tool

Info

Publication number: CN218364527U
Application number: CN202222898460.3U
Authority: CN
Inventors: 常凤智; 周其笑; 王爱国
Original assignee: Nanjing Toua Hardware & Tools Co ltd
Current assignee: Nanjing Toua Hardware & Tools Co ltd
Priority date: 2022-11-01
Filing date: 2022-11-01
Publication date: 2023-01-24
Anticipated expiration: 2032-11-01

Abstract

The utility model relates to a fastener is hit and is beaten instrument quick change rifle mouth belongs to fastener drive device technical field. The gun nozzle comprises a nailing seat arranged at the front end of a beating tool and a gun nozzle which can be inserted into the front end of the nailing seat; the inserting part of the gun nozzle is provided with a sunken section, the part of the nailing seat corresponding to the sunken section is provided with at least one groove, and a radial perforation is arranged in the groove; after the gun nozzle is inserted into the nailing seat, the groove of the nailing seat clamps an elastic clamp, and the elastic clamp is provided with an elastic positioning bulge which passes through the radial through hole and reaches the sunken section. The utility model has the advantages of greatly simplified structure, easy manufacture and reduced cost; the assembly is very convenient without tools; the gun nozzle can be quickly assembled, disassembled and replaced only by pulling out or inserting the gun nozzle.

Description

Quick-change gun nozzle of fastener striking tool

Technical Field

The utility model relates to a fastener strikes part of instrument, especially a fastener is hit and is beaten instrument quick change rifle mouth belongs to fastener driving tool technical field.

Background

Fastener driving tools are used to secure fasteners such as nails to another object. Patent document No. 201420056737.0 discloses a typical structure of a fastener-striking tool (also called a nail gun). Since in actual use, fasteners of different specifications need to be used according to specific situations, the muzzle of the fastener striking tool also needs to be replaced as appropriate.

Chinese patent documents with application numbers 202122711565.9 and 201510759151. X respectively disclose two fast replacing devices for a gun nozzle, in which the gun nozzle is stressed to press a limit pin to compress a positioning spring, so as to release the positioning connection of the gun nozzle; the locking mechanism of the latter comprises a telescopic piece and a limiting steel ball with the diameter larger than the aperture of the through hole, the telescopic piece is movably arranged in the groove body, the limiting steel ball is arranged in the through hole, and the lower part of the limiting steel ball is positioned in the waist groove of the nail tube; the nail tube is disassembled and assembled, and the telescopic piece is matched with the limiting steel ball to enable the limiting steel ball to be located outside the waist groove.

The prior art is provided with a limiting part (a pin or a steel ball), an elastic part, a spring pressing part and a screw for installation, the number of parts is large, the structure is complex, and tools such as a screw is needed during assembly; and failures such as staples are relatively easy to occur.

Disclosure of Invention

An object of the utility model is to provide a simple structure, need not the fastener that the instrument can assemble and hit instrument quick change rifle mouth to the shortcoming that above-mentioned prior art exists.

In order to achieve the purpose, the utility model discloses fastener is hit basic technical scheme who beats instrument quick change rifle mouth and is: comprises a nailing seat arranged at the front end of a beating tool and a gun nozzle which can be inserted into the front end of the nailing seat;

the inserting part of the gun nozzle is provided with a sunken section, the part of the nailing seat corresponding to the sunken section is provided with at least one groove, and a radial perforation is arranged in the groove;

after the gun nozzle is inserted into the nailing seat, the groove of the nailing seat clamps an elastic clamp, and the elastic clamp is provided with an elastic positioning bulge which passes through the radial through hole and reaches the sunken section.

After the utility model is adopted, an elastic clamping clip replaces a plurality of parts such as a limiting part, an elastic part, a spring pressing part, a screw for installation and the like in the prior art, thereby greatly simplifying the structure, being very easy to manufacture and reducing the cost; and the elastic clamp is only needed to be pressed into the nailing seat by hands during assembly, and the tool is not needed, so that the assembly is very convenient. After assembly, the position of the muzzle is constrained by the resilient locating tabs that pass through the radial perforations. When the gun nozzle is replaced, the gun nozzle can be quickly assembled, disassembled and replaced only by overcoming the constraint force of the elastic positioning protrusion on the gun nozzle through the acting force of pulling out or inserting the gun nozzle.

The utility model discloses one of further perfection is: the inserting portion of the gun nozzle is provided with a circumferential reducing sunken section, the part of the nailing seat corresponding to the reducing sunken section is provided with an annular groove, two sides of the annular groove are provided with symmetrical inclined planes, and the middle part of the inclined plane is provided with a radial perforation.

Further: the elastic clamp is in a U shape formed by extending an arc bow towards two ends, and the vicinities of the two ends are respectively and oppositely bulged to form elastic positioning bulges; the elastic clamp is clamped into the annular groove, and the two elastic positioning bulges of the elastic clamp respectively penetrate through the corresponding radial through holes and then reach the reducing concave section.

The utility model discloses second of further perfection: the inserting part of the gun nozzle is a sunken section formed by two flat surfaces; the pipe section of nailing seat cartridge rifle mouth corresponds the position of sunken section has the concave plane of cylinder surface bilateral symmetry, the semicircular arc recess intercommunication on the planar front end of concave and the nailing seat pipe section, the radial perforation of rectangular shape that has axial extension in the concave plane.

And further: the elastic clamp is provided with an arc bow clamped into the semi-circular groove, two ends of the arc bow are respectively bent to extend out to clamp two clamping jaws with notched planes, the middle parts of the two clamping jaws are respectively provided with opposite elastic positioning protrusions, and the elastic positioning protrusions penetrate through the strip-shaped radial through holes and then reach the sunken sections of the gun nozzle.

Drawings

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

FIG. 2 is a schematic sectional view of the structure of FIG. 1B-B.

Fig. 3 is a schematic perspective exploded view of the embodiment of fig. 1.

FIG. 4 isbase:Sub>A schematic sectional view A-A of FIG. 1.

Fig. 5 is a schematic view of a three-dimensional structure of an elastic clip according to a second embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a second embodiment of the present invention.

FIG. 7 isbase:Sub>A schematic sectional view A-A of FIG. 6.

Fig. 8 is a schematic view of an enlarged sectional structure of B-B of fig. 6.

Detailed Description

Example one

The fastener striking tool related to the embodiment can use gas as power and also can use a battery as power, and a power device is arranged in the shell to drive the striker mechanism; the back part of the shell extends downwards to form a grab handle, and the front end of the shell is provided with a nailing seat.

The quick-change muzzle of the fastener striking tool of the embodiment is mainly composed of a nailing base 2 mounted at the front end of the striking tool, a muzzle 1 capable of being inserted into a jack at the front end of the nailing base and an elastic clamping clip 3 formed by bending a spring steel wire, as shown in fig. 1 to 4.

The inserting part of the gun nozzle 1 is provided with a circumferential reducing sunken section 1-2, the part of the nailing seat 2 corresponding to the reducing sunken section 1-2 is provided with an annular groove 2-1, the two sides of the annular groove 2-1 are symmetrically milled with a deviation plane 2-3, and the middle part of the deviation plane 2-3 forms a radial perforation 2-2.

The elastic clamp 3 is in a U shape formed by extending an arc bow 3-1 towards two ends, and the vicinities of the two ends are respectively and oppositely bulged to form elastic positioning bulges 3-2. After the gun nozzle 1 is inserted into the insertion hole at the front end of the nailing seat 2, the elastic clamp 3 can be clamped into the annular groove 2-1 of the nailing seat 2 by only hands, and two elastic positioning protrusions 3-2 of the elastic clamp 3 respectively penetrate through the corresponding radial through holes 2-2 and then reach the reducing concave section 1-2 of the gun nozzle 1 to form axial clamping constraint on the gun nozzle 1. The inserted gun nozzle 1 can be circumferentially displaced in the nailing machine base 2, and is suitable for adjusting the operation state of the tool as required in the occasion with limited working space such as a corner.

When the gun nozzle needs to be replaced, the gun nozzle can be directly pulled out only by applying the pulling-out acting force for overcoming the elastic clamping, so that the gun nozzle is very convenient and fast. In addition, because the muzzle is by the protruding bilateral symmetry centre gripping location of elasticity clamping, therefore difficult skew arouses trouble such as nail jamming.

Example two

Referring to fig. 5 to 8, the quick-release muzzle of the fastener driving tool of the present embodiment is similar to the first embodiment in that the basic structure of the insertion of the muzzle 1 and the nailing tool 2 is positioned by the resilient clip 3 after the muzzle 1 is inserted into the insertion hole at the front end of the nailing tool 2.

The difference is that the sunken section of the inserting part of the gun nozzle 1 is formed by two milled flat surfaces 1-2' instead of circumferential reducing, so that the gun nozzle 1 inserted into the nailing seat 2 is clamped by the elastic clamp 3 and then is circumferentially restricted, cannot be circumferentially rotated, and is suitable for operation occasions requiring relatively stable gun nozzles.

The part, corresponding to the sunken section, of the circular tube section of the nailing seat 2, where the gun nozzle 1 is inserted, is provided with a notch plane 2-4 formed by symmetrically milling and flattening the two sides of the cylindrical surface, the front end of the notch plane 2-4 is communicated with a semi-arc groove 2-1 in the circular tube section of the nailing seat 2, and a strip-shaped radial through hole 2-2 extending axially is formed in the notch plane 2-4.

The elastic clamp 3 is made of a spring steel wire and is provided with an arc bow 3-1 clamped into the semi-arc groove 2-1, two ends of the arc bow 3-1 are respectively bent to extend to form clamping jaws 3-3 for clamping two notch planes 2-4, and the middle parts of the two clamping jaws 3-3 are respectively provided with opposite elastic positioning bulges 3-2. When the gun nozzle is assembled, the arc-shaped bow part of the elastic clamp 3 is pressed into the semi-circular-arc groove 2-1 of the nailing seat 2 by hand, and the elastic positioning protrusion 3-2 can pass through the radial through hole 2-2 and then reach the sunken section of the gun nozzle 1, so that the gun nozzle is clamped in place without any tool, and the gun nozzle is very convenient. Other advantages are the same as those of the embodiments, and are not further described.

In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent replacement or equivalent transformation fall within the protection scope required by the utility model.

Claims

1. A quick-change gun nozzle of a fastener impact tool comprises a nail driving seat arranged at the front end of the impact tool and a gun nozzle capable of being inserted into the front end of the nail driving seat; the method is characterized in that:

2. The quick-change muzzle of fastener impacting tool as claimed in claim 1, wherein: the inserting portion of the gun nozzle is provided with a circumferential reducing sunken section, the part of the nailing seat corresponding to the reducing sunken section is provided with an annular groove, two sides of the annular groove are provided with symmetrical inclined planes, and the middle part of the inclined plane is provided with a radial perforation.

3. The quick-change muzzle of fastener impacting tool as claimed in claim 2, wherein: the elastic clamp is in a U shape formed by extending an arc bow towards two ends, and the parts near the two ends are respectively and oppositely bulged to form elastic positioning bulges; the elastic clamp is clamped into the annular groove, and the two elastic positioning bulges of the elastic clamp respectively penetrate through the corresponding radial through holes and then reach the reducing concave section.

4. The quick-change gun nozzle of a fastener striking tool according to claim 1, wherein: the inserting part of the gun nozzle is a sunken section formed by two flat surfaces; the pipe section of nailing seat cartridge rifle mouth corresponds the position of sunken section has the notch plane of cylindrical surface bilateral symmetry, the semicircle recess intercommunication on planar front end of notch and the nailing seat pipe section, the radial perforation of rectangular shape that has axial extension in the notch plane.

5. The quick-change muzzle of fastener impacting tool as claimed in claim 4, wherein: the elastic clamp is provided with an arc bow clamped into the semi-circular groove, two ends of the arc bow are respectively bent to extend out to clamp two clamping jaws with notched planes, the middle parts of the two clamping jaws are respectively provided with opposite elastic positioning protrusions, and the elastic positioning protrusions penetrate through the strip-shaped radial through holes and then reach the sunken sections of the gun nozzle.