Inflator facilitating safe observation of barometer

Abstract

The utility model relates to the technical field of air gun design, and discloses an air cylinder convenient for safely observing a barometer, which comprises a cylinder body and a barometer body, the barometer body comprises a connecting base, an air inlet channel arranged in the connecting base, a pressure corrugated pipe with one end embedded in the air inlet channel and fixed, a needle rod arranged at the end, away from the connecting base, of the pressure corrugated pipe, and needle heads arranged at the two ends of the needle rod and located on the side edge of the connecting base. The dial plate is arranged at the end, away from the barrel, of the connecting base and used for aligning the two needle heads, the transparent cover wraps the end, away from the barrel, of the connecting base, a first external thread face is arranged on the outer wall of the peripheral side of the connecting base, and a first internal thread face used for being in threaded connection with the first external thread face is arranged on the inner wall of the peripheral side of the end of the barrel. The needle head can be observed from the side edge of the cylinder body through the transparent cover, so that the pressure value can be quickly read, the end face of the cylinder does not need to be aligned with a human face, and finally, the needle head of the barometer body can be safely observed.

Description

Technical Field

[0001] The utility model belongs to the technical field of air gun design, and particularly relates to an air cylinder which is convenient for safely observing an air pressure gauge. Background Art

[0002] Airguns are a general term for firearms that fire projectiles powered by pressurized gas. They are light weapons that do not use gunpowder, but rely on the pressure of compressed air or gas to fire the bullet.

[0003] At present, a Chinese patent with announcement number CN214620850U and publication date of November 5, 2021 discloses a firing mechanism of an air gun, including a receiver, a butt support is provided at one end of the receiver, a gas cylinder is passed through the receiver, a gas supply cylinder matching with it is provided at one end of the gas cylinder inside the receiver, an air pressure balanced gas supply structure is provided inside the gas supply cylinder, a reserve gas cylinder matching with it is provided at one end of the gas supply cylinder inside the receiver, a firing gas magazine matching with it is provided at one end of the reserve gas cylinder inside the receiver, a firing structure is provided at one end of the firing gas magazine, a balancing valve is provided between the reserve gas cylinder and the firing gas magazine, a locking tooth matching with the firing structure is provided at the lower end of the receiver, and a pull rod matching with the firing structure is slidably connected inside the receiver.

[0004] The air gun uses a gas cylinder to supply pressurized gas to propel the projectile. In the prior art, in order to timely understand the pressure in the gas cylinder, a pressure gauge is installed at the end of the gas cylinder. The pressure in the gas cylinder can be known by the value of the pressure gauge. When the pressure in the gas cylinder is insufficient, the pressure in the gas cylinder can be replenished in time.

[0005] However, in the prior art, reference Figure 5 The needle of the barometer is usually located at the end of the cylinder. Therefore, when observing the needle of the barometer, the end of the cylinder needs to be pointed at the face of the person. At this time, the muzzle will also be facing the face. This will cause certain risks in observing the needle of the barometer, which is not conducive to the safe observation of the barometer. Utility Model Content

[0006] The utility model aims to provide an air cylinder which is convenient for safely observing a barometer and can be beneficial for relatively safely observing a needle of a barometer body.

[0007] The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: a gas cylinder for safe observation of a barometer, comprising a cylinder body, a barometer body located at one end of the cylinder body, the barometer body comprising a connecting seat with one end embedded in the end of the cylinder body, an air inlet passage opened in the connecting seat, a pressure bellows with one end embedded in the air inlet passage and fixed, a needle rod arranged at the end of the pressure bellows away from the connecting seat, needles arranged at both ends of the needle rod and located at the side positions of the connecting seat, a dial arranged at the end of the connecting seat away from the cylinder body and for the two needles to align, and a transparent cover wrapped around the end of the connecting seat away from the cylinder body, a first external threaded surface is provided on the peripheral outer wall of the connecting seat, a first internal threaded surface for threaded connection of the first external threaded surface is provided on the peripheral inner wall of the end of the cylinder body, one end of the pressure bellows is connected to the air inlet passage and the other end is closed.

[0008] The utility model is further configured as follows: a side of the transparent cover away from the connecting seat is wrapped with a protective cover, and both sides of the protective cover are provided with observation ports corresponding to the needle position.

[0009] The utility model is further configured as follows: a first through hole is provided on both sides of the protective cover, a second through hole corresponding to the position of the first through hole is provided on both sides of the transparent cover, thread grooves corresponding to the position of the second through hole are provided on both sides of the connecting seat away from one end of the cylinder body, and connecting bolts are provided on both sides of the protective cover that pass through the first through hole and the second through hole and are threadedly connected in the thread groove.

[0010] The utility model is further configured as follows: a first annular groove is provided on the peripheral outer wall of the connecting seat, and a first rubber sealing ring is embedded in the first annular groove and pressed against the inner wall of the cylinder.

[0011] The utility model is further configured as follows: a watch movement embedded in the air inlet channel is arranged in the connecting seat, a second external threaded surface is provided on the outer wall of the peripheral side of the watch movement, a second internal threaded surface for threaded connection with the second external threaded surface is provided on the inner wall of the air inlet channel, an air inlet hole for embedding a pressure bellows is provided at the center of the watch movement, an axial hole for the watch movement to pass through is provided at the center of the dial, and a locking end for tightening against the dial is provided at one end of the watch movement away from the connecting seat.

[0012] The utility model is further configured as follows: a second annular groove is provided on the outer wall of the peripheral side of the watch movement, and a second rubber sealing ring is embedded in the second annular groove and pressed against the inner wall of the air inlet passage.

[0013] In summary, the utility model has the following beneficial effects:

[0014] 1. The connecting seat is threadedly connected to the first internal thread surface of the end of the cylinder body by using the first external thread surface. At this time, the connecting seat can be fixed on the end of the cylinder body, wherein the needle rod is arranged at the end of the pressure bellows away from the connecting seat, and the two needles are respectively arranged at the two ends of the needle rod and located at the side of the connecting seat. When it is necessary to observe the dial reading indicated by the needle, the needle can be observed from the side of the cylinder through the transparent cover, so as to quickly read the pressure value, and there is no need to align the end of the cylinder with the face of the person, which is ultimately conducive to a safer observation of the needle of the barometer body;

[0015] 2. Use the protective cover to wrap around the transparent cover, and use the observation port to correspond to the position of the needle. At this time, the protective cover can play a protective role and improve the structural stability of the barometer body;

[0016] 3. Use the connecting bolt to pass through the first through hole of the protective cover and the second through hole of the transparent cover and then threadedly connect to the thread groove of the connecting seat. At this time, the protective cover can be detachably connected, which is convenient for quick disassembly and assembly of the protective cover;

[0017] 4. The connecting seat is pressed against the inner wall of the cylinder by the first rubber sealing ring. At this time, the first rubber sealing ring can achieve a sealing effect, reducing the possibility of air leakage on one side of the barometer body;

[0018] 5. A watch core is arranged in the connection seat, wherein the watch core is threadedly connected to the second inner thread surface of the air inlet passage by using the second outer thread surface, and then the air inlet hole of the watch core can be inserted into the pressure bellows, and the watch core can be pressed against the dial by using the locking end, thereby realizing the detachable connection of the dial on the connection seat;

[0019] 6. The second rubber sealing ring can achieve a sealing effect on the watch movement to prevent gas from leaking out from the gap around the watch movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 It is an exploded view of the connection relationship between the cylinder, the connecting seat, the transparent cover, the protective cover and the connecting bolts in the utility model;

[0023] Figure 3It is an exploded diagram of the connection relationship between the connecting seat, the pressure bellows, the needle rod, the dial and the watch core in the utility model;

[0024] Figure 4 It is a cross-sectional view of the connection relationship between the cylinder and the connecting seat in the utility model;

[0025] Figure 5 It is a structural schematic diagram of a gas cylinder in the prior art, wherein the pointer of the pressure gauge is located at the end surface of the gas cylinder.

[0026] In the figure, 1, cylinder; 11, first internal thread surface; 2, barometer body; 21, connecting seat; 211, first external thread surface; 212, thread groove; 213, first ring groove; 214, first rubber sealing ring; 22, air inlet channel; 221, second internal thread surface; 23, pressure bellows; 24, needle rod; 25, needle head; 26, dial; 261, axial hole; 27, transparent cover; 271, second through hole; 3, protective cover; 31, observation port; 32, first through hole; 33, connecting bolt; 4, watch core; 41, second external thread surface; 42, air inlet; 43, locking end; 44, second ring groove; 45, second rubber sealing ring. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] A cylinder for convenient and safe observation of the barometer, referring to Figure 1 , Figure 2 , Figure 3 The gas cylinder for safely observing the barometer comprises a cylinder 1, a barometer body 2 located at one end of the cylinder 1, the barometer body 2 comprises a connecting seat 21, an air inlet channel 22, a pressure bellows 23, a needle rod 24, a needle head 25, a dial 26, and a transparent cover 27, wherein one end of the connecting seat 21 is embedded in the end of the cylinder 1, and a first external thread surface 211 is provided on the peripheral outer wall of the connecting seat 21, and a first internal thread surface 11 for threaded connection of the first external thread surface 211 is provided on the peripheral inner wall of the end of the cylinder 1; and a first annular groove 213 is provided on the peripheral outer wall of the connecting seat 21, wherein a first rubber sealing ring 214 pressed against the inner wall of the cylinder 1 is embedded in the first annular groove 213.

[0029] Reference Figure 1 , Figure 2 , Figure 3, the air inlet channel 22 is opened in the connecting seat 21, wherein one end of the pressure bellows 23 is embedded in the air inlet channel 22, the pressure bellows 23 is a spiral hollow elastic tube, and one end of the pressure bellows 23 is connected to the air inlet channel 22 and the other end is closed, the pressure bellows 23 is an elastic sensitive element, after the high-pressure gas is introduced into the pressure bellows 23, the spiral pressure bellows 23 can be deflected due to being straightened, thereby driving the needle rod 24 to rotate; at the same time, the needle rod 24 is welded to the end of the pressure bellows 23 away from the connecting seat 21, and the needle rod 24 is parallel to the end face of the cylinder 1, and the needle head 25 is integrally arranged at both ends of the needle rod 24 and located at the side position of the connecting seat 21; wherein the dial 26 is arranged at the end of the connecting seat 21 away from the cylinder 1, and the side of the dial 26 has a scale for the two needle heads 25 to align.

[0030] Reference Figure 2 , Figure 3 , Figure 4 A watch movement 4 embedded in the air inlet channel 22 is arranged in the connecting seat 21, and a second external threaded surface 41 is provided on the peripheral outer wall of the watch movement 4, wherein a second internal threaded surface 221 for threaded connection with the second external threaded surface 41 is provided on the inner wall of the air inlet channel 22, and an air inlet hole 42 for embedding the pressure bellows 23 is provided at the center of the watch movement 4, and the end of the pressure bellows 23 is welded in the air inlet hole 42 and communicated with the air inlet hole 42, and at the same time, an axial hole 261 for the watch movement 4 to pass through is provided at the center of the dial 26, and a locking end 43 for pressing against the dial 26 is integrally provided at one end of the watch movement 4 away from the connecting seat 21; wherein a second annular groove 44 is provided on the peripheral outer wall of the watch movement 4, and a second rubber sealing ring 45 pressing against the inner wall of the air inlet channel 22 is embedded in the second annular groove 44.

[0031] Reference Figure 2 , the transparent cover 27 is wrapped around the end of the connecting seat 21 away from the cylinder body 1, and at this time the transparent cover 27 can be wrapped around the outside of the dial 26; wherein the side of the transparent cover 27 away from the connecting seat 21 is wrapped with a protective cover 3, and both sides of the protective cover 3 are provided with observation ports 31 corresponding to the position of the needle 25; at the same time, both sides of the protective cover 3 are provided with a first through hole 32, and both sides of the transparent cover 27 are provided with a second through hole 271 corresponding to the position of the first through hole 32, wherein both sides of the end of the connecting seat 21 away from the cylinder body 1 are provided with threaded grooves 212 corresponding to the position of the second through hole 271, and both sides of the protective cover 3 are provided with connecting bolts 33 that pass through the first through hole 32 and the second through hole 271 and are threadedly connected in the threaded grooves 212.

[0032] Principle: The connecting seat 21 is threadedly connected to the first internal threaded surface 11 of the end of the cylinder 1 by using the first external threaded surface 211. At this time, the connecting seat 21 can be fixed on the end of the cylinder 1, wherein the needle rod 24 is arranged at the end of the pressure bellows 23 away from the connecting seat 21, and the two needles 25 are respectively arranged at the two ends of the needle rod 24 and located at the side position of the connecting seat 21. When it is necessary to observe the dial 26 reading indicated by the needle 25, the needle 25 can be observed from the side position of the cylinder 1 through the transparent cover 27, so as to quickly read the pressure value, and there is no need to align the end face of the cylinder with the face of the person, which is finally conducive to relatively safe observation of the needle 25 of the barometer body 2.

Claims

1. A gas cylinder for safely observing a barometer, comprising a cylinder (1), a barometer body (2) located at one end of the cylinder (1), characterized in that: The barometer body (2) comprises a connecting seat (21) with one end embedded in the end of the cylinder (1), an air inlet passage (22) provided in the connecting seat (21), a pressure bellows (23) with one end embedded in the air inlet passage (22) and fixed, a needle rod (24) arranged at one end of the pressure bellows (23) away from the connecting seat (21), needle heads (25) arranged at both ends of the needle rod (24) and located at the side of the connecting seat (21), and a pressure bellows (23) arranged at the connecting seat (21) away from the cylinder. (1) and a dial (26) for aligning two needles (25), and a transparent cover (27) wrapped around the end of the connecting seat (21) away from the cylinder (1), a first external thread surface (211) is provided on the peripheral outer wall of the connecting seat (21), and a first internal thread surface (11) is provided on the peripheral inner wall of the end of the cylinder (1) for threaded connection with the first external thread surface (211), and one end of the pressure bellows (23) is communicated with the air inlet channel (22) and the other end is closed.

2. A gas cylinder for convenient and safe observation of the barometer according to claim 1, characterized in that: The side of the transparent cover (27) away from the connecting seat (21) is wrapped with a protective cover (3), and both sides of the protective cover (3) are provided with observation ports (31) corresponding to the position of the needle (25).

3. A gas cylinder for convenient and safe observation of the barometer according to claim 2, characterized in that: The protective cover (3) is provided with a first through hole (32) on both sides, the transparent cover (27) is provided with a second through hole (271) corresponding to the position of the first through hole (32) on both sides, the connecting seat (21) is provided with a thread groove (212) corresponding to the position of the second through hole (271) on both sides of the end away from the cylinder (1), and the protective cover (3) is provided with a connecting bolt (33) that passes through the first through hole (32) and the second through hole (271) and is then threadedly connected in the thread groove (212) on both sides.

4. A gas cylinder for convenient and safe observation of the barometer according to claim 1, characterized in that: A first annular groove (213) is provided on the peripheral outer wall of the connecting seat (21), and a first rubber sealing ring (214) is embedded in the first annular groove (213) and pressed against the inner wall of the cylinder (1).

5. The gas cylinder for convenient and safe observation of the barometer according to claim 1, characterized in that: The connecting seat (21) is provided with a watch core (4) embedded in the air inlet passage (22); a second external threaded surface (41) is provided on the peripheral outer wall of the watch core (4); a second internal threaded surface (221) for threaded connection with the second external threaded surface (41) is provided on the inner wall of the air inlet passage (22); an air inlet hole (42) for embedding a pressure bellows (23) is provided at the center of the watch core (4); an axial hole (261) for passing the watch core (4) is provided at the center of the dial (26); and a locking end (43) for pressing against the dial (26) is provided at one end of the watch core (4) away from the connecting seat (21).

6. A gas cylinder for convenient and safe observation of the barometer according to claim 5, characterized in that: A second annular groove (44) is provided on the outer peripheral wall of the watch movement (4), and a second rubber sealing ring (45) is embedded in the second annular groove (44) and is pressed against the inner wall of the air inlet passage (22).

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