Noise reduction nail fixer launching structure

Abstract

The utility model discloses a silencing nail fixer launching structure which comprises a launching barrel, a silencer and a piston rod, and an airflow channel is arranged on the launching barrel. The silencer is connected to an inner cavity of the launching barrel and located at the air outlet end of the airflow channel. The piston rod is located in an inner cavity of the launching barrel, a rod head of the piston rod is located at the air inlet end of the airflow channel, and a rod part of the piston rod is connected into an inner cavity of the silencer in a sliding mode. The utility model has the beneficial effects that the silencer is arranged in the launching barrel body, so that high-speed airflow enters the silencer before being sprayed out of the launching structure, and the noise is reduced under the action of the silencer, so that the noise pollution of a construction site is reduced, and the hearing of workers is further protected.

Description

Technical Field

[0001] The utility model relates to the technology of a nail fixing device structure, in particular to a noise-reducing nail fixing device launching structure. Background Art

[0002] Indirect gunpowder nail fasteners are widely used in the fields of construction, chemical industry, and shipbuilding. Indirect gunpowder nail fasteners use the thrust generated by gunpowder explosion to push the piston rod toward the nail tube, and the piston rod then pushes the nails in the nail tube out, thereby connecting the plate-like objects to the fixed object.

[0003] The existing indirect gunpowder nail fixing device produces a lot of noise when in use, causing noise pollution to the construction site and possibly causing hearing loss to the workers, which is detrimental to the workers' health. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing indirect gunpowder nail fixing device produces a large noise when in use, causing noise pollution to the construction site. The utility model aims to provide a muffler nail fixing device launching structure, which reduces the noise under the action of the muffler, so as to reduce the noise pollution at the construction site and further protect the hearing of the workers.

[0005] The utility model is realized by the following technical solutions:

[0006] A silencer nail fixing launching structure comprises a launching cylinder, a silencer and a piston rod, wherein an air flow channel is arranged on the launching cylinder; the silencer is connected to the inner cavity of the launching cylinder and is located at the air outlet end of the air flow channel; the piston rod is located in the inner cavity of the launching cylinder, the rod head of the piston rod is located at the air inlet end of the air flow channel, and the rod part is slidably connected in the inner cavity of the silencer.

[0007] Since the gunpowder in the indirect gunpowder nail fixing device generates high-temperature and high-pressure gas when burning, the high-temperature and high-pressure gas expands rapidly when ejecting the launching structure, causing vibration of the surrounding air and generating large noise. To this end, the utility model provides a muffler nail fixing device launching structure, wherein the rod head of the piston rod is located at the air inlet end of the air flow channel, so that the high-speed air flow pushes the piston rod to move at high speed to push out the nail, and connect the plate-like object to the fixed object; by arranging a muffler in the launching cylinder, the high-speed air flow enters the muffler before ejecting the launching structure, and the noise is reduced under the action of the muffler, so as to reduce the noise pollution at the construction site and protect the hearing of the workers.

[0008] In some embodiments, an air inlet is provided at one end of the muffler, a plurality of interconnected expansion chambers are provided in the inner cavity of the muffler, and an exhaust hole is provided on the side wall of the end of the muffler away from the air inlet. In this way, by providing multiple expansion chambers, the noise in the expansion chamber is attenuated or reflected back, and the noise gradually attenuates after the airflow passes through multiple expansion chambers continuously, so as to achieve the effect of noise reduction.

[0009] In some embodiments, the inner cavity of the muffler is provided with two muffler bowls, the cavity between adjacent muffler bowls constitutes the expansion cavity, and the cavity between the muffler bowl and the side wall of the muffler also constitutes the expansion cavity. Multiple muffler bowls are provided, and the high-speed and high-pressure airflow is reflected back into the expansion cavity through the muffler bowls, so that the noise is gradually attenuated to achieve the effect of noise reduction.

[0010] In some embodiments, a baffle is connected to one end of the muffler close to the air inlet end of the airflow channel, the inner diameter of the baffle is smaller than the diameter of the rod head of the piston rod, and at least one air inlet through hole is provided on the baffle, and the air inlet through hole constitutes the air inlet. Since the high-temperature and high-pressure gas exerts a large thrust on the piston rod, it may cause the piston rod to rush out of the launch structure. For this reason, the utility model provides a baffle on the muffler, and the piston rod is limited by the baffle to prevent the piston rod from rushing out of the launch structure.

[0011] In some embodiments, the launch cylinder includes a nail tube, one end of which cooperates with the inner cavity shaft hole of the silencer, a groove and two circular through holes are provided in the middle of the nail tube, a first steel ball is installed in the circular through hole, a U-shaped retaining spring is installed in the groove, and the two ends of the U-shaped retaining spring are respectively against the first steel ball, the rod portion of the piston rod is slidably connected to the inner cavity of the nail tube, and a conical portion is provided at one end of the piston rod away from the rod head, and the side of the first steel ball away from the U-shaped retaining spring is against the outer side of the conical portion. Since the rod end of the piston rod is located in the nail tube when the piston rod pushes out the nail, the piston rod occupies the installation space of the nail, for this reason, by providing a U-shaped retaining spring, pressure is applied to the first steel ball, so that the first steel ball is against the conical portion of the piston rod, preventing the piston rod from entering the installation space of the nail when the nail fixer is not fired.

[0012] In some embodiments, the launch tube includes a launch tube and a launch tube rear cover, the launch tube rear cover is provided with a charge chamber and a countersunk hole communicating with the charge chamber, the countersunk hole and the inner cavity of the launch tube constitute the airflow channel, the rod head of the piston rod is located in the countersunk hole, one end of the launch tube is connected to the launch tube rear cover, and the silencer is connected to the inner side of the other end of the launch tube. The rod head of the piston rod is connected to the launch tube rear cover so that the airflow generated by the combustion of gunpowder can directly act on the piston rod, and the airflow then enters the silencer from the airflow channel to achieve the effect of silencing the launch structure.

[0013] In some embodiments, the launch tube body further comprises a shell, the shell is sleeved on the outer side of the launch tube, the shell is provided with an exhaust through hole, the exhaust through hole is communicated with the exhaust hole. The exhaust through hole is provided on the shell so that the airflow from the silencer is discharged through the exhaust through hole.

[0014] In some embodiments, the launch tube body further includes a nail tube sleeve, the nail tube sleeve is sleeved on the outside of the nail tube, one end of the nail tube sleeve is provided with an annular groove, and the end of the silencer away from the rear cover of the launch tube is provided with a convex ring, the convex ring is connected in the annular groove, so that the nail tube sleeve is clamped with the silencer. In this way, the nail tube sleeve is clamped with the silencer, the nail tube sleeve is positioned and fixed, and the nail tube sleeve is prevented from falling off.

[0015] In some embodiments, the launch barrel further includes an outer cover, which is sleeved on the outside of the nail tube sleeve, and the outer cover is provided with an internal thread, a screw is screwed with the internal thread, and the screw end of the screw abuts against the nail tube sleeve to connect the outer cover to the nail tube sleeve. The outer cover is connected to the nail tube sleeve by screws, which is convenient for installation and disassembly.

[0016] In some embodiments, an annular groove is provided on the outer side of the nail tube sleeve, a second steel ball is provided in the annular groove, and the screw end of the screw abuts against the second steel ball. The second steel ball is provided in the groove of the nail tube sleeve, and the screw abuts against the second steel ball to limit the relative position of the nail tube sleeve and the outer cover.

[0017] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0018] 1. By setting a silencer in the launch tube, the high-speed airflow enters the silencer before spraying out of the launch structure, and the noise is reduced under the action of the silencer.

[0019] 2. A baffle is provided on the muffler to limit the piston rod and prevent the piston rod from rushing out of the firing structure.

[0020] 3. By providing a U-shaped retaining spring, pressure is applied to the first steel ball so that the first steel ball abuts against the tapered portion of the piston rod, thereby preventing the piston rod from entering the installation position of the nail when the nail fixer is not fired.

[0021] 4. The firing structure of the muffler nail fixing device in the utility model has a simple structure and is easy to install and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model.

[0023] In the attached picture:

[0024] Figure 1 It is a cross-sectional view of the utility model;

[0025] Figure 2 It is a structural diagram of the muffler in the utility model;

[0026] Figure 3 For this utility model Figure 1 An enlarged view of the K portion;

[0027] Figure 4 For this utility model Figure 1 An enlarged view of the K1 part in FIG.

[0028] Figure 5 This is a structural diagram of the rear cover of the launch tube in the utility model;

[0029] Figure 6 It is a structural diagram of the U-shaped retaining spring in the utility model;

[0030] Figure 7 It is a structural diagram of the silencer in the utility model.

[0031] Marks and corresponding parts names in the attached drawings:

[0032] Shell 2, exhaust through hole 21, outer cover 3, screw 4, second steel ball 5, silencer 6, convex ring 61, exhaust hole 62, silencer bowl 63, annular groove 64, launch tube 11, launch tube rear cover 12, medicine release cavity 121, nail tube 13, nail tube sleeve 14, piston rod 15, rod head 151, tapered portion 152, U-shaped retaining ring 16, first steel ball 17, baffle 18, air inlet through hole 181. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0034] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any appropriate combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the diagrams provided herein are for illustrative purposes, and the diagrams are not necessarily drawn to scale. The term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0035] In the description of the present invention, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention.

[0036] The terms "first" and "second" used in the present invention are only used to distinguish the corresponding components for the sake of clarity of description, and are not intended to limit any order or emphasize importance, etc. In addition, the term "connected" used in this article can be directly connected or indirectly connected via other components without special explanation.

[0037] Since the gunpowder in the indirect gunpowder nailer burns, it will produce high-temperature and high-pressure gas. The high-temperature and high-pressure gas will expand rapidly when it is ejected from the launching structure, causing vibration of the surrounding air and generating a lot of noise. Figures 1 to 7 , including a launching cylinder, a silencer 6 and a piston rod 15, wherein the launching cylinder is provided with an air flow channel; the silencer 6 is connected to the inner cavity of the launching cylinder and is located at the air outlet end of the air flow channel; the piston rod 15 is located in the inner cavity of the launching cylinder, the rod head 151 of the piston rod 15 is located at the air inlet end of the air flow channel, and the rod part can be slidably connected in the inner cavity of the silencer 6.

[0038] By arranging a silencer 6 in the launching cylinder, the high-speed airflow enters the silencer 6 before ejecting the launching structure, and the noise is reduced under the action of the silencer 6; and the rod head 151 of the piston rod 15 is located at the air inlet end of the air flow channel, so that the high-speed airflow pushes the piston rod 15 to move at a high speed to push out the nail, thereby connecting the plate-like object to the fixed object.

[0039] See also Figure 2 and Figure 7 The muffler 6 is provided with an air inlet at one end, and a plurality of interconnected expansion chambers are provided in the inner cavity of the muffler 6. An exhaust hole 62 is provided on the side wall of the end of the muffler 6 away from the air inlet. In this way, by providing a plurality of expansion chambers, the noise in the expansion chamber is attenuated or reflected back, and the noise gradually attenuates after the airflow passes through the plurality of expansion chambers continuously, so as to achieve the effect of noise reduction.

[0040] See also Figure 2 The inner cavity of the muffler 6 is provided with two muffler bowls 63, the cavity between adjacent muffler bowls 63 constitutes the expansion cavity, and the expansion cavity is also formed between the muffler bowl 63 and the side wall of the muffler 6. A plurality of muffler bowls 63 are provided, and the high-speed and high-pressure airflow is reflected back into the expansion cavity through the muffler bowls 63, so that the noise is gradually attenuated to achieve the effect of noise reduction.

[0041] See also Figure 2 The end of the muffler 6 close to the air inlet end of the airflow channel is connected with a baffle 18, the inner diameter of the baffle 18 is smaller than the diameter of the rod head 151 of the piston rod 15, and the baffle 18 is provided with at least one air inlet hole 181, and the air inlet hole 181 constitutes the air inlet. Since the high-temperature and high-pressure gas exerts a large thrust on the piston rod 15, it may cause the piston rod 15 to rush out of the launch structure. For this reason, the utility model sets a baffle 18 on the muffler 6, and limits the piston rod 15 through the baffle 18 to prevent the piston rod 15 from rushing out of the launch structure.

[0042] In other embodiments, the muffler can be configured as two parts, which are snapped together to form a whole. An annular groove 64 is provided on the inner side of the two halves of the muffler to facilitate the installation of the baffle 18 in the annular groove 64, and also to facilitate the disassembly and cleaning of the muffler after long-term use.

[0043] See also Figure 1The launching cylinder comprises a nail tube 13, one end of which cooperates with the inner cavity axial hole of the silencer 6, a groove and two circular through holes are provided in the middle of the nail tube 13, a first steel ball 17 is installed in the circular through hole, a U-shaped retaining spring 16 is installed in the groove, and the two ends of the U-shaped retaining spring 16 are respectively abutted against the first steel ball 17, the rod portion of the piston rod 15 is slidably connected to the inner cavity of the nail tube 13, and a conical portion 152 is provided at one end of the piston rod 15 away from the rod head 151, and the side of the first steel ball 17 away from the U-shaped retaining spring 16 abuts against the outer side of the conical portion 152. When the piston rod 15 pushes out the nail, the rod end of the piston rod 15 is located in the nail tube and the piston rod 15 occupies the installation position of the nail. Therefore, a U-shaped retaining spring 16 is provided to apply pressure to the first steel ball 17 so that the first steel ball 17 abuts against the tapered portion 152 of the piston rod 15 to prevent the piston rod 15 from entering the installation position of the nail when the nail fastener is not fired.

[0044] See also Figure 1 and Figure 5 The launch tube body includes a launch tube 11 and a launch tube rear cover 12. The launch tube rear cover 12 is provided with a charge chamber 121 and a countersunk hole communicating with the charge chamber 121. The countersunk hole and the inner cavity of the launch tube 11 constitute the airflow channel. The rod head 151 of the piston rod 15 is located in the countersunk hole. One end of the launch tube 11 is connected to the launch tube rear cover 12. The muffler 6 is connected to the inner side of the other end of the launch tube 11. The rod head 151 of the piston rod 15 is connected to the launch tube rear cover 12, so that the airflow generated by the combustion of gunpowder can directly act on the piston rod 15, and the airflow then enters the muffler from the airflow channel to achieve the muffler effect of the launch structure.

[0045] See also Figure 1 The launch tube body further comprises a shell 2, which is sleeved on the outer side of the launch tube 11, and an exhaust through hole 21 is provided on the shell 2, and the exhaust through hole 21 is communicated with the exhaust hole 62. The exhaust through hole 21 is provided on the shell 2 so that the airflow flowing out of the muffler 6 is discharged through the exhaust through hole 21.

[0046] See also Figure 1 The launch tube body further comprises a nail tube sleeve 14, which is sleeved on the outside of the nail tube 13, and an annular groove is provided at one end of the nail tube sleeve 14. A convex ring 61 is provided at one end of the muffler 6 away from the launch tube rear cover 12, and the convex ring 61 is connected in the annular groove so that the nail tube sleeve 14 is clamped with the muffler 6. In this way, the nail tube sleeve 14 is clamped with the muffler 6, which reduces the difficulty of assembly and disassembly, and also prevents airflow from flowing out from the outside of the nail tube sleeve.

[0047] See also Figure 1The launch barrel also includes an outer cover 3, which is sleeved on the outside of the nail tube sleeve 14. The outer cover 3 is provided with an internal thread, and the screw 4 is screwed with the internal thread. The screw end of the screw 4 abuts against the nail tube sleeve 14 to connect the outer cover 3 to the nail tube sleeve 14. The outer cover 3 is connected to the nail tube sleeve by the screw 4, which is convenient for installation and disassembly.

[0048] See also Figure 1 The outer side of the nail tube sleeve 14 is provided with an annular groove, and a second steel ball is provided in the annular groove, and the screw end of the screw 4 abuts against the second steel ball. The second steel ball is arranged in the groove of the nail tube sleeve, and the screw 4 abuts against the second steel ball to limit the relative position of the nail tube sleeve and the outer cover 3.

[0049] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A silent nail fixing device launching structure, characterized in that: include: A launching cylinder, wherein an air flow channel is provided on the launching cylinder; A silencer, the silencer being connected to the inner cavity of the launch barrel and being located at the air outlet end of the air flow channel; A piston rod is located in the inner cavity of the launch cylinder, a rod head of the piston rod is located at the air inlet end of the air flow channel, and the rod portion is slidably connected in the inner cavity of the silencer.

2. The silencing nail fixing device launching structure according to claim 1, characterized in that: An air inlet is arranged at one end of the muffler, a plurality of interconnected expansion chambers are arranged in the inner cavity of the muffler, and an exhaust hole is arranged on the side wall of the end of the muffler away from the air inlet.

3. The silencing nail fixing device launching structure according to claim 2, characterized in that: The inner cavity of the muffler is provided with two muffler bowls, the cavity between adjacent muffler bowls constitutes the expansion cavity, and the cavity between the muffler bowl and the side wall of the muffler also constitutes the expansion cavity.

4. The silencing nail fixing device launching structure according to claim 2, characterized in that: A baffle is connected to one end of the muffler close to the air inlet end of the air flow channel, the inner diameter of the baffle is smaller than the diameter of the rod head of the piston rod, and at least one air inlet hole is provided on the baffle, which constitutes the air inlet.

5. The silencing nail fixing device launching structure according to claim 1, characterized in that: The launching cylinder comprises a nail tube, one end of which cooperates with the inner cavity axial hole of the silencer, a groove and two circular through holes are arranged in the middle of the nail tube, a first steel ball is installed in the circular through hole, a U-shaped retaining spring is installed in the groove, two ends of the U-shaped retaining spring are respectively abutted against the first steel ball, the rod portion of the piston rod is slidably connected to the inner cavity of the nail tube, a conical portion is arranged at the end of the piston rod away from the rod head, and the side of the first steel ball away from the U-shaped retaining spring is abutted against the outer side of the conical portion.

6. The silencing nail fixing device launching structure according to claim 2, characterized in that: The launch cylinder includes a launch tube and a launch tube rear cover, the launch tube rear cover is provided with a charge chamber and a countersunk hole communicating with the charge chamber, the countersunk hole and the inner cavity of the launch tube constitute the airflow channel, the rod head of the piston rod is located in the countersunk hole, one end of the launch tube is connected to the launch tube rear cover, and the silencer is connected to the inner side of the other end of the launch tube.

7. The silencing nail fixing device launching structure according to claim 6, characterized in that: The launching cylinder body also includes an outer shell, which is sleeved on the outer side of the launching tube. An exhaust through hole is provided on the outer shell, and the exhaust through hole is communicated with the exhaust hole.

8. The silencing nail fixing device launching structure according to claim 4, characterized in that: The launching tube body also includes a nail tube sleeve, which is sleeved on the outside of the nail tube, one end of which is provided with an annular groove, and the end of the silencer away from the rear cover of the launching tube is provided with a convex ring, which is connected in the annular groove so that the nail tube sleeve is clamped with the silencer.

9. The silencing nail fixing device launching structure according to claim 8, characterized in that: The launching barrel also includes an outer cover, which is sleeved on the outside of the nail tube sleeve. The outer cover is provided with an internal thread, and a screw is screwed with the internal thread. The screw end of the screw abuts against the nail tube sleeve to connect the outer cover to the nail tube sleeve.

10. The muffler nail fixing device launching structure according to claim 9, characterized in that: An annular groove is arranged on the outer side of the nail tube sleeve, a second steel ball is arranged in the annular groove, and the screw rod end of the screw abuts against the second steel ball.

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