A compressed oxygen personal lifesaving device housing

Abstract

This utility model provides a housing for a compressed oxygen self-rescue device, belonging to the technical field of compressed oxygen self-rescue devices. It solves the technical problem of existing compressed oxygen self-rescue devices being easily accidentally opened during transportation. The housing includes an upper cover and a lower cover. The upper cover has symmetrically arranged latching grooves near the lower cover, with hooks inside the grooves. The lower cover has symmetrically arranged mounting grooves near the upper cover. A hinge shaft is fixedly connected to the mounting groove, and a locking wrench is hinged to the hinge shaft. A locking ring is hinged to the locking wrench. A locking rod is also fixedly connected to the mounting groove. The locking rod sequentially includes a first fixing part, two retractable parts, a locking part, and a second fixing part. The locking part is connected to the first and second fixing parts respectively through the two retractable parts. The locking rod is located below the hinge shaft, and the end of the locking wrench away from the hinge shaft is located between the locking rod and the lower cover. This utility model increases safety during storage and transportation.

Description

Technical Field

[0001] This utility model belongs to the technical field of compressed oxygen self-rescue devices, and specifically refers to a housing for a compressed oxygen self-rescue device. Background Technology

[0002] A compressed oxygen self-rescue device is a reusable escape and self-rescue device that uses high-pressure compressed oxygen as a gas source. It is mainly used in coal mines or conventional work environments to provide respiratory protection to the wearer in emergencies such as toxic gas leaks or oxygen deficiency, enabling them to quickly escape the danger zone. This device is widely used due to its small size, light weight, and ease of use.

[0003] Before use, compressed oxygen self-rescue devices are housed in an outer casing, which consists of an upper cover and a lower shell. To open the device, the upper cover must first be opened. For safety, the upper cover and lower shell are typically hinged and fixed, allowing for easy opening when needed. For example, the compressed oxygen self-rescue device casing with patent number 2017208382573 features symmetrical locking slots on both sides of the upper cover, each containing a hook. The top opening of the lower shell aligns with the upper cover, and symmetrical mounting slots on both sides of the lower shell correspond to the locking slots on the upper cover. Each mounting slot houses a locking wrench, and a locking ring is hinged to the hinge ring in the middle of the locking wrench connection. The locking process involves attaching the locking ring to the hook, pressing down the locking wrench, and the locking ring tightening around the hook under leverage. The unlocking process involves lifting the locking wrench, separating the locking ring from the hook, and then removing the upper cover. However, since the self-rescue device's top cover opens when opened, it begins to generate its own oxygen supply. If the locking lever is accidentally engaged before use or during transport, the locking ring and hook block can easily separate, causing the top cover to move. How can we make the self-rescue device safer and more reliable during storage and transportation? Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a housing for a compressed oxygen self-rescue device.

[0005] The objective of this utility model can be achieved through the following technical solution: A compressed oxygen self-rescue device shell includes an upper cover and a lower shell. The upper cover has symmetrically arranged buckle grooves at one end near the lower shell, and hook blocks are arranged in the buckle grooves. The lower shell has symmetrically arranged mounting grooves at one end near the upper cover. A hinge shaft is fixedly connected to the mounting groove. A locking wrench is hinged to the hinge shaft. A locking ring is hinged to the locking wrench. A locking rod is also fixedly connected to the mounting groove. The locking rod includes a first fixing part, two retractable parts, a locking part, and a second fixing part in sequence. The locking part is connected to the first fixing part and the second fixing part respectively through the two retractable parts. The locking rod is located below the hinge shaft. The end of the locking wrench away from the hinge shaft is located between the locking rod and the lower shell.

[0006] Furthermore, the first fixing part has a protruding bulge at the end away from the second fixing part, and a U-shaped groove is provided on the bulge. The bottom of the U-shaped groove extends to the first fixing part, and the second fixing part has a protruding fixing cylinder at the end away from the first fixing part.

[0007] Furthermore, the locking wrench sequentially includes a first hinge portion, a second hinge portion, and a locking portion. The first hinge portion is hinged to a hinge shaft, the second hinge portion is hinged to a locking ring, and the outer surface of the locking portion abuts against the outer surface of the locking portion.

[0008] Furthermore, the diameter of the recessed portion is smaller than the diameters of the locking portion, the first fixing portion, and the second fixing portion.

[0009] Furthermore, the upper end of the upper cover has a protruding mounting round boss, and a transparent cover is threadedly fixed to the mounting round boss. A stepped hole is provided in the mounting round boss, and a transparent lower cover is radially fixed on the stepped hole. The transparent lower cover and the transparent cover are axially fixed against each other. An oxygen cylinder is provided in the lower shell, and a pressure gauge is provided on the oxygen cylinder. The pressure gauge is positioned opposite to the transparent lower cover.

[0010] Furthermore, the upper end of the cover has a protruding marking protrusion, the outer periphery of the marking protrusion has a fixing groove, a transparent marking cover is fixedly connected to the fixing groove, the lower end of the transparent marking cover has a downward protruding fixing ring, the fixing ring is embedded in the fixing groove, and the transparent marking cover covers the top of the marking protrusion.

[0011] Compared with existing technologies, the technical advantages of this utility model are as follows: 1. The locking rod not only fixes one end of the locking wrench, preventing the compressed oxygen self-rescue device from opening even if accidentally touched during storage and transportation, thus increasing safety, but also reduces the diameter of the retracted part relative to the locking part, the first fixing part, and the second fixing part, creating a mechanically weak area. When the locking wrench is turned with slight external force, the retracted part will break first, allowing normal use after opening the top cover. The locking rod can be easily installed, fixed, or removed by passing it through the mounting slot through the cooperation of the expanded part and the U-shaped groove. 2. The oxygen cylinder pressure can be monitored in real time without opening the cover, avoiding misoperation and protecting the pressure gauge surface from wear that could lead to unclear indications. 3. The transparent mark cover covers the mark protrusion, protecting the internal markings and facilitating quick replacement of markings to adapt to different regulations or language requirements. Attached Figure Description

[0012] Figure 1 This is a perspective view of the utility model.

[0013] Figure 2 This is a sectional view of the present invention and a partial enlarged view of the sectional view.

[0014] Figure 3 This is the front view of the locking rod of this utility model.

[0015] Part Number Markings: 1. Top Cover; 101. Snap Groove; 102. Hook Block; 103. Mounting Round Boss; 104. Stepped Hole; 105. Marking Boss; 106. Fixing Groove; 2. Lower Shell; 201. Mounting Groove; 3. Locking Wrench; 301. First Hinge Part; 302. Second Hinge Part; 303. Locking Part; 4. Hinge Shaft; 5. Locking Ring; 6. Locking Rod; 601. First Fixing Part; 602. Retracted Part; 603. Locking Part; 604. Second Fixing Part; 605. Expanded Part; 606. U-Shaped Groove; 607. Fixing Cylindrical Part; 7. Transparent Cover; 8. Transparent Lower Cover; 9. Oxygen Cylinder; 10. Pressure Gauge; 11. Transparent Marking Cover; 1101. Fixing Ring. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] It should be noted that the descriptions of "up", "down", "left", "right", "top", "bottom", etc. in this utility model are defined based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] according to Figures 1 to 3 As shown, a compressed oxygen self-rescue device shell includes an upper cover 1 and a lower shell 2. The lower shell 2 mainly consists of a high-pressure system, a breathing system, and a carbon dioxide filtration system. The high-pressure system includes an oxygen cylinder 9, an oxygen cylinder 9 switch, a pressure reducer, and a pressure gauge 10. The breathing system includes a mouthpiece, a nose clip, a breathing hose, an air bag, an exhaust valve, and a breathing valve. The filtration system consists of a purification tank containing a quantitative amount of standard-compliant carbon dioxide absorbent. A mounting boss 103 protrudes from the upper end of the upper cover 1. A transparent cover 7 is threadedly fixed to the mounting boss 103. A stepped hole 104 is provided inside the mounting boss 103. A transparent lower cover 8 is radially fixed to the stepped hole 104. The transparent lower cover 8 and the transparent cover 7 are axially fixed against each other. An oxygen cylinder 9 is installed inside the lower shell 2. A pressure gauge 10 is installed on the oxygen cylinder 9 and is positioned opposite to the transparent lower cover 8. A marking protrusion 105 protrudes from the upper end of the top cover 1. A fixing groove 106 is provided on the outer periphery of the marking protrusion 105. A transparent marking cover 11 is fixedly connected to the fixing groove 106. A fixing ring 1101 protrudes downward from the lower end of the transparent marking cover 11 and is embedded in the fixing groove 106. The transparent marking cover 11 covers the marking protrusion 105. The pressure of the oxygen cylinder 9 can be monitored in real time without opening the cover, avoiding misoperation and protecting the surface of the pressure gauge 10 from wear that could cause unclear indications. The transparent marking cover 11 covers the marking protrusion 105, protecting the internal markings and facilitating quick replacement of markings to adapt to different regulations or language requirements.

[0019] To better store and transport the compressed oxygen self-rescue device, a buckle groove 101 is symmetrically provided at the end of the upper cover 1 near the lower shell 2, and a hook block 102 is provided in the buckle groove 101. A mounting groove 201 is symmetrically provided at the end of the lower shell 2 near the upper cover 1. A hinge shaft 4 is fixedly connected to the mounting groove 201, and a locking wrench 3 is hinged to the hinge shaft 4. A locking ring 5 is hinged to the locking wrench 3. A locking rod 6 is also fixedly connected to the mounting groove 201. The locking rod 6 includes a first fixing part 601, two retractable parts 602, a locking part 603, and a second fixing part 604. The locking part 603 is connected to the first fixing part 601 and the second fixing part 604 through the two retractable parts 602 respectively. The locking rod 6 is located below the hinge shaft 4, and the end of the locking wrench 3 away from the hinge shaft 4 is located between the locking rod 6 and the lower shell 2. The first fixing part 601 has a protruding enlarged part 605 at its end away from the second fixing part 604. A U-shaped groove 606 is provided on the enlarged part 605, and the bottom of the U-shaped groove 606 extends to the first fixing part 601. The second fixing part 604 has a protruding fixing cylindrical part 607 at its end away from the first fixing part 601. The locking wrench 3 sequentially includes a first hinge part 301, a second hinge part 302, and a locking part 303. The first hinge part 301 is hinged to the hinge shaft 4, and the second hinge part 302 is hinged to the locking ring 5. The outer surface of the locking part 303 abuts against the outer surface of the locking part 603. The diameter of the retracted part 602 is smaller than the diameters of the locking part 603, the first fixing part 601, and the second fixing part 604. The locking lever 6 not only secures one end of the locking wrench 3, preventing the compressed oxygen self-rescue device from opening even if accidentally touched during storage and transportation, thus increasing safety, but also reduces the diameter of the retractable part 602 relative to the locking part 603, the first fixing part 601, and the second fixing part 604, creating a mechanically weak area. When the locking wrench 3 is pulled with slight external force, the retractable part 602 will break first, allowing normal use by opening the top cover 1. The locking lever 6 can be easily installed, fixed, or removed by passing it through the mounting groove 201 through the cooperation of the enlarged part 605 and the U-shaped groove 606.

[0020] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection defined by the claims of the present utility model.

Claims

1. A compressed oxygen self-rescue device housing, comprising an upper cover (1) and a lower shell (2), wherein the upper cover (1) is symmetrically provided with a buckle groove (101) at one end near the lower shell (2), and a hook block (102) is provided in the buckle groove (101); the lower shell (2) is symmetrically provided with a mounting groove (201) at one end near the upper cover (1), a hinge shaft (4) is fixedly connected to the mounting groove (201), a locking wrench (3) is hinged to the hinge shaft (4), and a locking ring (5) is hinged to the locking wrench (3), characterized in that: A locking rod (6) is also fixedly connected to the mounting groove (201). The locking rod (6) includes a first fixing part (601), two retractable parts (602), a locking part (603), and a second fixing part (604) in sequence. The locking part (603) is connected to the first fixing part (601) and the second fixing part (604) through the two retractable parts (602) respectively. The locking rod (6) is located below the hinge shaft (4). The end of the locking wrench (3) away from the hinge shaft (4) is located between the locking rod (6) and the lower shell (2).

2. The housing of a compressed oxygen self-rescue device according to claim 1, characterized in that: The first fixing part (601) has a protruding bulge (605) at one end away from the second fixing part (604), and a U-shaped groove (606) is provided on the bulge (605). The bottom of the U-shaped groove (606) extends to the first fixing part (601). The second fixing part (604) has a protruding fixing cylinder (607) at one end away from the first fixing part (601).

3. The housing of a compressed oxygen self-rescue device according to claim 2, characterized in that: The locking wrench (3) includes a first hinge part (301), a second hinge part (302) and a locking part (303) in sequence. The first hinge part (301) is hinged to the hinge shaft (4), the second hinge part (302) is hinged to the locking ring (5), and the outer surface of the locking part (303) abuts against the outer surface of the locking part (603).

4. The housing of a compressed oxygen self-rescue device according to claim 1, 2, or 3, characterized in that: The diameter of the recessed portion (602) is smaller than the diameter of the locking portion (603), the first fixing portion (601), and the second fixing portion (604).

5. The housing of a compressed oxygen self-rescue device according to claim 1, characterized in that: The upper cover (1) has a protruding mounting round boss (103) at its upper end. A transparent cover (7) is threadedly fixed to the mounting round boss (103). A stepped hole (104) is provided inside the mounting round boss (103). A transparent lower cover (8) is radially fixed to the stepped hole (104). The transparent lower cover (8) and the transparent cover (7) are axially fixed against each other. An oxygen cylinder (9) is provided inside the lower shell (2). A pressure gauge (10) is provided on the oxygen cylinder (9). The pressure gauge (10) is positioned opposite to the transparent lower cover (8).

6. The housing of a compressed oxygen self-rescue device according to claim 1, characterized in that: The upper cover (1) has a protruding mark protrusion (105) at its upper end. A fixing groove (106) is provided on the outer periphery of the mark protrusion (105). A transparent mark cover (11) is fixedly connected to the fixing groove (106). A fixing ring (1101) protrudes downward from the lower end of the transparent mark cover (11). The fixing ring (1101) is embedded in the fixing groove (106). The transparent mark cover (11) covers the mark protrusion (105).

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