Universal air exhalation bottle bottom clamping mechanism and new air exhalation bottle seat

Abstract

The utility model discloses give a general type empty exhale bottle bottom clamping mechanism, including first support seat, swing clamping frame, locking limiting mechanism, swing clamping frame includes L swing board, telescopic clamping board, swing push mechanism, the lower position of L swing board middle part is hinged and is established on first support seat, swing push mechanism is used to always exert a forward swing thrust to the lower part of L swing board, the rear portion telescopic clamping board is slid and is established in the upper portion front side of L swing board, and telescopic clamping board can move and position relative to L swing board, and form an empty exhale bottle bottom clamping space between telescopic clamping board front portion and the lower part of L swing board, locking limiting mechanism is established on first support seat, and locking limiting mechanism is used to realize the swing locking limiting of the lower part of L swing board. This bottle bottom clamping mechanism can realize the effective clamping fixing of the bottle bottom of different specifications empty exhale bottle, and then the replacement of the empty exhale bottle on the seat is convenient.

Description

Technical Field

[0001] This utility model relates to the technical field of air exhalation cylinder seats in fire truck crew compartments, specifically a universal air exhalation cylinder bottom locking mechanism and a novel air exhalation cylinder seat. Background Technology

[0002] A breathing apparatus (BPA) is a respiratory protective device worn by firefighters during firefighting and rescue missions, and is one of the 11 items of personal protective equipment for firefighters. Normally, the BPA is mounted on the back of the seat. Firefighters need to put it on themselves before entering the rescue scene after boarding the vehicle, which greatly reduces the time between arriving at the fire scene and commencing rescue operations.

[0003] When securing the breathing apparatus cylinder to the seat back, it is typically inverted, with the bottom of the cylinder facing up and the nozzle facing down. Because there are many different sizes of breathing apparatus cylinders available, it becomes impossible to directly secure them to the seat back after the cylinder size is changed, making cylinder replacement difficult. Utility Model Content

[0004] The purpose of this utility model is to provide a universal air bottle bottom locking mechanism and a new type of air bottle seat. The bottle bottom locking mechanism can effectively lock and fix the bottom of air bottles of different specifications, thereby facilitating the replacement of air bottles on the seat.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a universal air-exposure bottle bottom locking mechanism, including a first support base, a swing locking frame, and a locking and limiting mechanism. The swing locking frame includes an L-shaped swing plate, a telescopic locking plate, and a swing pushing mechanism. The lower middle part of the L-shaped swing plate is hinged to the first support base. The swing pushing mechanism is used to always apply a forward swinging thrust to the lower part of the L-shaped swing plate. The rear part of the telescopic locking plate is slidably disposed on the upper front side of the L-shaped swing plate, and the telescopic locking plate can move back and forth and be positioned relative to the L-shaped swing plate. An air-exposure bottle bottom locking space is formed between the front part of the telescopic locking plate and the lower part of the L-shaped swing plate. The locking and limiting mechanism is disposed on the first support base and is used to lock and limit the swing of the lower part of the L-shaped swing plate.

[0006] Preferably, the first support base includes a first support plate, the left and right ends of the first support plate are respectively locked at the bottom of a fixed pressing base, and a countersunk hole is provided at the upper and lower ends of the fixed pressing base.

[0007] Furthermore, a support shaft is fixedly installed on the upper front side of the first support plate, and the lower middle part of the L-shaped swing plate is rotatably sleeved on the support shaft. The swing pushing mechanism includes a torsion spring, which is sleeved on the support shaft, and one torsion arm of the torsion spring presses against the front side wall of the first support plate while the other torsion arm presses against the lower rear side of the L-shaped swing plate.

[0008] Furthermore, the telescopic locking plate includes a first horizontal plate, and an inclined limiting plate is fixedly provided on the front side of the first horizontal plate. The inclined limiting plate is in a state of being lower in the front and higher in the back. A first sliding groove distributed in the front-back direction is provided on the left and right sides of the upper side of the second horizontal plate above the L-shaped swing plate. A second sliding groove distributed in the front-back direction is provided in the middle of the bottom side of the second horizontal plate. The rear part of the first horizontal plate is correspondingly slidably sleeved in the first sliding groove and the second sliding groove.

[0009] Furthermore, a first positioning hole and a first elongated hole are respectively provided at the bottom front side of the first slide and the middle upper side of the second slide. A second elongated hole and a second positioning hole adapted to the first positioning hole and the first elongated hole are respectively provided at the rear part of the first horizontal plate. The first horizontal plate can be fixed on the second horizontal plate by means of bolt connection.

[0010] Furthermore, a clamping lug is provided on the left and right sides of the front part of the inclined limiting plate, and the two clamping lugs are distributed in a figure-eight shape. A rubber column is fixedly provided at the rear of each clamping lug.

[0011] Furthermore, a protective cover is fixedly installed on the upper part of the inclined limiting plate.

[0012] Preferably, the locking and limiting mechanism includes a second support base, a first locking tongue, a first locking plate, a pull wire, and a spring. The second support base is fixedly disposed on the lower right side of the front side of the first support plate. A pull wire through hole is provided at the lower part of the second support base. A locking rod is provided on the lower right side of the L-shaped swing plate. The middle part of the first locking tongue is rotatably hinged to the second support base. The first locking plate is √-shaped, and the protruding part of the middle area of ​​the first locking plate is hinged to the second support base. The first locking tongue and the first locking plate are distributed vertically opposite to each other. A locking rod is provided on the upper part of the first locking tongue to engage with the locking mechanism. The U-shaped groove of the lever has an L-shaped locking groove at the lower part of the first locking tongue. One end of the pull cable passes through the pull cable hole and is fixedly connected to the lower part of the first locking plate. The spring is sleeved on the movable end of the pull cable and is clamped between the lower part of the second support and the lower part of the first locking plate. The spring is always in a compressed state. The locking lever can enter the U-shaped groove when it swings backward. When the locking lever swings backward and drives the lower part of the first locking tongue to rotate forward, the locking head at the upper end of the first locking plate can be locked into the L-shaped locking groove under the push of the spring.

[0013] Furthermore, the second support includes a guide limiting plate, a guide groove located on the upper front side of the first locking tongue is provided on the guide limiting plate, and a rotation limiting plate located on the front side of the engagement point between the locking head and the L-shaped locking groove is fixedly provided on the guide limiting plate.

[0014] A novel air-exhalation cylinder seat includes the universal air-exhalation cylinder bottom locking mechanism described above. The novel air-exhalation cylinder seat also includes a backrest support plate. Two fixed pressing seats press and fix the first support plate to the upper front side of the backrest support plate. A support handle is fixedly installed on both the left and right sides of the front of the backrest support plate. A ring-shaped locking seat with an opening is installed on the lower front side of the backrest support plate. The ring-shaped locking seat is used to lock the head of the air-exhalation cylinder. A pull cable handle is installed on the lower front side of one of the support handles. The pull cable handle is fixedly connected to the front end of the pull cable and can slide back and forth relative to the support handle.

[0015] The beneficial effects of this utility model are as follows: This utility model has a simple structure and is convenient to process and manufacture; in practical applications, by adjusting the relative position between the upper part of the L-shaped swing plate and the first horizontal plate of the inclined limiting plate, the size of the space for locking the bottom of the air bottle can be adjusted, thereby facilitating the locking and positioning of the bottom of air bottles of different specifications, improving the application flexibility of the seat; by directly pulling the pull cable handle, the rotation limit of the first locking plate on the first locking tongue can be directly released, thereby finally releasing the limit of the L-shaped swing plate. After the limit of the L-shaped swing plate is released, the locking of the bottom of the air bottle is released, making it easy to remove the air bottle from the seat; by using the guide groove to guide and limit the rotation of the first locking tongue and the rotation limit plate to limit the rotation of the first locking plate, it is ensured that the first locking tongue can again smoothly lock and limit the rotation of the locking rod, thereby ensuring the effective locking and fixing of the bottom of the air bottle. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some preferred embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the universal empty breathing bottle bottom locking mechanism in this utility model;

[0018] Figure 2 This is a side view of the overall structure of the universal empty breathing bottle bottom locking mechanism in this utility model;

[0019] Figure 3 A schematic diagram illustrating the state in which the L-shaped swing plate is locked in place by the cooperation of the first locking plate and the first locking tongue.

[0020] Figure 4 This is a schematic diagram of the overall structure of the novel empty exhalation cylinder seat of this utility model;

[0021] Figure 5 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 6 for Figure 3 Enlarged view at point B in the middle;

[0023] In the diagram: 11 First support plate, 111 Support lug, 112 Support shaft, 12 Fixed pressing seat, 121 Countersunk hole, 21 L-shaped swing plate, 211 First slide groove, 212 Second slide groove, 213 First positioning hole, 214 First elongated hole, 215 Locking rod, 216 Second horizontal plate, 22 Telescopic locking plate, 221 Second elongated hole, 222 Second positioning hole, 223 Clamping lug, 224 Rubber column, 225 First horizontal plate, 226 Inclined limiting plate, 23 Torsion spring, 24 Guard Cover, 31 Second support base, 311 Pull wire through hole, 32 First locking tongue, 321 U-shaped slot, 322 First through hole, 323 L-shaped locking slot, 33 First locking plate, 331 Lock head, 332 Second through hole, 333 Third through hole, 34 Pull wire, 35 Spring, 36 Guide limiting plate, 361 Guide groove, 362 Rotation limiting plate, 363 Auxiliary guide groove, 41 Backrest support plate, 42 Support handle, 43 Annular card seat, 44 Pull wire handle, 101 Empty exhalation bottle bottom locking space. Detailed Implementation

[0024] The following will describe specific embodiments and appendices. Figure 1-6 The technical solutions in the embodiments of this utility model are clearly and completely described below. Obviously, the described embodiments are only some preferred embodiments of this utility model, and not all embodiments. Those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0025] This utility model provides a universal empty breathing bottle bottom locking mechanism (such as...) Figure 1 , Figure 2As shown, the structure includes a first support base, a swinging retaining frame, and a locking and limiting mechanism. In practical applications, the first support base serves as the main support, providing stable support for the swinging retaining frame and the locking and limiting mechanism. The swinging retaining frame includes an L-shaped swing plate 21, a telescopic retaining plate 22, and a swing pushing mechanism. The lower part of the L-shaped swing plate 21 is hinged to the first support base, allowing it to rotate freely relative to the first support base. The swing pushing mechanism continuously applies a forward swinging thrust to the lower part of the L-shaped swing plate 21, enabling the lower part of the L-shaped swing plate 21 to swing forward. The rear part of the telescopic locking plate 22 is slidably disposed on the upper front side of the L-shaped swing plate 21, and the telescopic locking plate 22 can move back and forth and be positioned relative to the L-shaped swing plate 21. An empty exhalation bottle bottom locking space 101 is formed between the front part of the telescopic locking plate 22 and the lower part of the L-shaped swing plate 21. In actual application, by moving the position of the telescopic locking plate 22 back and forth, the size of the empty exhalation bottle bottom locking space 101 can be adjusted, thereby enabling the clamping and fixing of the bottom of different models of empty exhalation bottles. The locking and limiting mechanism is disposed on the first support base, and the locking and limiting mechanism is used to lock and limit the swing of the lower part of the L-shaped swing plate 21. In practical application, when the L-shaped swing plate 21 drives the telescopic locking plate 22 to swing synchronously at a certain angle, the bottom of the empty exhalation bottle can enter the empty exhalation bottle bottom locking space 101 at a certain tilt angle. After the bottom of the empty exhalation bottle enters the empty exhalation bottle bottom locking space 101, the lower part of the L-shaped swing plate 21 continues to move backward. During the process of the L-shaped swing plate 21 moving backward, the swing locking of the L-shaped swing plate 21 is achieved by the locking and limiting mechanism, thereby locking the bottom of the empty exhalation bottle.

[0026] Based on the above embodiments, the specific implementation of the first support base is as follows: the first support base includes a first support plate 11, the left end and the right end of the first support plate 11 are respectively locked at the bottom of a fixed pressing base 12, and a countersunk hole 121 is provided at the upper and lower ends of the fixed pressing base 12. The countersunk hole 121 is used to realize the passage of bolts. When the two fixed pressing bases 12 are fixed at corresponding positions using bolts, the first support plate 11 can be fixed. In this specific embodiment, the first support plate 11 can be fixed to the back of the seat using two fixed pressing bases 12.

[0027] Based on the above embodiments, the specific implementation method for realizing the forward swing of the bottom of the L-shaped swing plate 21 is as follows: A support shaft 112 is fixedly installed on the upper front side of the first support plate 11. Specifically, two support lugs 111 are fixedly installed at intervals on the upper left and right sides of the first support plate 11. The two ends of the support shaft 112 are sleeved in the corresponding support lugs 111. The support shaft 112 is fixed relative to the support lugs 111 or can rotate freely. The lower middle part of the L-shaped swing plate 21 is rotatably sleeved on the support shaft 112. The swing pushing mechanism includes a torsion spring 23. The torsion spring 23 is sleeved on the support shaft 112, and one torsion arm of the torsion spring 23 presses against the front side wall of the first support plate 111, while the other torsion arm presses against the lower rear side of the L-shaped swing plate 21. Based on the elastic characteristics of the torsion spring 23, it can realize the forward rotation and pushing of the bottom of the L-shaped swing plate 21.

[0028] Based on the above embodiments, the specific implementation of the telescopic locking plate 22 being able to move and be positioned relative to the upper part of the L-shaped swing plate 21 is as follows: The telescopic locking plate 22 includes a first horizontal plate 225, and an inclined limiting plate 226 is fixedly provided on the front side of the first horizontal plate 225. The inclined limiting plate 226 is in a state of being lower in the front and higher in the back. A first sliding groove 211 distributed in the front-back direction is provided on the left and right sides of the upper side of the second horizontal plate 216 above the L-shaped swing plate 21. A second sliding groove 212 distributed in the front-back direction is provided in the middle of the bottom side of the second horizontal plate 216. The rear part of the first horizontal plate 225 is correspondingly slidably fitted into the first sliding groove 211 and the second sliding groove 212. Specifically, three sliding plug-in plates corresponding to the two first sliding grooves 211 and one second sliding groove 212 are fixedly provided on the rear part of the first horizontal plate 225. By sliding the sliding plug-in plates in the corresponding first sliding grooves 211 and the second sliding groove 212, the telescopic locking plate 22 can be adjusted and positioned relative to the upper part of the L-shaped swing plate 21. To further adjust the forward and backward movement of the second horizontal plate 216, a first positioning hole 213 and a first elongated hole 214 are respectively provided at the bottom front side of the first slide groove 211 and the middle upper side of the second slide groove 212. A second elongated hole 221 and a second positioning hole 223 adapted to the first positioning hole 213 and the first elongated hole 214 are respectively provided at the rear side of the first horizontal plate 225. The first horizontal plate 225 can be fixedly connected to the second horizontal plate 216 by bolt connection. Specifically, the first positioning hole 213 and the second positioning hole 223 are both threaded holes. The bolt passes through the second elongated hole 221 and is tightened in the corresponding first positioning hole 213, and the bolt passes through the second elongated hole 214 and is tightened in the corresponding second positioning hole 223, thereby realizing the fixed connection between the first horizontal plate 225 and the second horizontal plate 216. Before the bolt is tightened, the first elongated hole 214 and the second elongated hole 221 can be used to adjust and position the first horizontal plate 225 on the second horizontal plate 216.

[0029] To improve the limiting effect of the tilting limiting plate 226 on the bottom of the empty exhalation bottle, a clamping lug 223 is provided on the left and right sides of the front part of the tilting limiting plate 226. The two clamping lugs 223 are distributed in a figure-eight shape. A rubber post 224 is fixedly provided at the rear of each clamping lug 223. The rubber post 224 is made of a soft material and will not cause wear to the bottom of the empty exhalation bottle when it comes into contact with the bottom of the bottle, thus improving the protection effect of the empty exhalation bottle.

[0030] In practical applications, to improve the protective effect of the tilt limit plate 226, a protective cover 24 is fixedly installed on the upper part of the tilt limit plate 226.

[0031] Based on the above embodiments, the specific implementation of the locking and limiting mechanism is as follows: The locking and limiting mechanism includes a second support base 31, a first locking tongue 32, a first locking plate 33, a pull wire 34, and a spring 35. The second support base 31 is fixedly disposed on the lower right side of the front side of the first support plate 11. A pull wire through hole 311 is provided at the lower part of the second support base 31. A locking rod 215 is provided on the lower right side of the L-shaped swing plate 21. The middle part of the first locking tongue 32 is rotatably hinged to the second support base 31. Specifically, a first through hole 322 is provided at the middle part of the first locking tongue 32. A support shaft passes through the first through hole 322 to realize the locking tongue 32 on the second support base 31. The support 31 is hinged, allowing the first locking tongue 32 to rotate freely. The first locking plate 33 is √-shaped, and its central protrusion is hinged to the second support 31. Specifically, a third through hole 333 is provided on the protrusion of the first locking plate 33. A support shaft is used to create the third through hole 333 to achieve the hinged setting of the first locking plate 33 on the second support 31. The first locking plate 33 can rotate freely on the support shaft. After the first locking tongue 32 and the first locking plate 33 are hinged on the second support 31, the first locking tongue 32 and the first locking plate 33 are vertically opposite each other. A locking rod 2 is provided on the upper part of the first locking tongue 32. The U-shaped slot 321 of the 15-part fitting has an L-shaped locking slot 323 at the lower part of the first locking tongue 32. The locking head 331 of the first locking plate 33 is opposite to the L-shaped locking slot 323. One end of the pull wire 34 passes through the pull wire through hole 311 and is fixedly connected to the lower part of the first locking plate 33. Specifically, a second through hole 332 is provided at the lower part of the first locking plate 33. A connecting pin is provided in the second through hole 332. A through hole is provided on the connecting pin. The upper end of the pull wire passes through the through hole of the connecting pin. A limiting block is fixedly provided at the upper part of the pull wire 34, thus fixing the pull wire on the connecting pin. When the pull wire 34 is pulled, the limiting block pushes the connecting pin to achieve the desired result. Now, the first locking plate 33 is pulled downwards; the spring 35 is sleeved on the movable end of the pull wire 34 and the spring 35 is clamped between the lower part of the second support 31 and the lower part of the first locking plate 33. The spring 35 is always in a compressed state. The spring 35 is always compressed, so the locking head 331 always has the tendency to be locked into the L-shaped locking groove 323. The locking rod 215 can enter the U-shaped groove 321 during the backward swing. During the backward swing of the locking rod 215, the lower part of the first locking tongue 32 is rotated forward. The locking head 331 at the upper end of the first locking plate 331 can be locked into the L-shaped locking groove 323 under the push of the spring 35.

[0032] The process of releasing and locking the locking rod 215 by utilizing the cooperation of the first locking tongue 32, the first locking plate 33, the pull wire 34, and the spring 35 is as follows: When the locking rod 215 is in the released state, the upper part of the first locking tongue 32 is distributed in an upward and forward position. This state facilitates the locking rod 215 to directly engage into the U-shaped slot 321 when it swings back. The locking head 331 is pressed against the upper front side of the L-shaped locking slot 323 by the push of the spring 35. When the bottom of the empty exhalation bottle enters the empty exhalation bottle bottom locking space 101 and pushes the lower part of the L-shaped swing plate 21 to rotate backward, the locking rod 215 moves backward synchronously. As the locking lever 215 rotates backward, it enters the U-shaped slot 321. With continued rotation, the locking lever 215 simultaneously pushes the upper part of the first locking tongue 32 to rotate backward. Simultaneously, the lower part of the first locking tongue 32 rotates outward, pushing the locking head 331 outward. Because the locking head 331 is pushed by the spring 35, it remains in contact with the upper outer side of the L-shaped locking slot 323 of the first locking tongue 32 during rotation. When the locking lever 215 pushes the first locking tongue 32 to rotate to a certain angle, the locking head 331 engages with the L-shaped slot. The upper outer part of the locking groove 323 disengages, and after disengagement, the locking head 331 rotates forward under the push of the spring 35 and engages in the L-shaped locking groove 323. At this time, the backward swing of the L-shaped swing plate 21 is also basically in place. Then, the push on the bottom of the empty exhalation bottle is released. After the push on the bottom of the empty exhalation bottle stops, the locking rod 215 tends to swing forward under the push of the torsion spring 23. At this time, because the locking head 331 is pressed against the L-shaped locking groove 323, the first locking tongue 32 cannot rotate. Then, the first locking tongue 32 can be used to make the locking rod 215 rotate forward, thereby realizing the swing limit of the L-shaped swing plate 21. The L-shaped swing plate 21 achieves the limiting position, and the L-shaped swing plate 21 and the telescopic locking plate 22 clamp the bottom of the empty exhalation bottle to achieve the positioning of the bottom of the empty exhalation bottle; when it is necessary to release the limiting position of the bottom of the empty exhalation bottle, the pull cable 34 is pulled directly. The pull cable 34 drives the locking head 331 to disengage from the L-shaped locking groove 323. After the locking head 331 disengages from the L-shaped locking groove 323, the upper part of the first locking tongue 32 can swing forward under the push of the locking rod 215. As the upper part of the first locking tongue 32 continues to swing forward, the locking rod 215 gradually disengages from the U-shaped groove 321, thereby realizing the release of the limiting position of the bottom of the empty exhalation bottle.

[0033] Based on the above embodiments, to ensure that the first locking tongue 32 can rotate smoothly while preventing the first locking plate 33 from rotating excessively, the second support base 31 includes a guide limiting plate 36. An auxiliary guide groove 363 is provided on the guide limiting plate 36. By providing the auxiliary guide groove 363, the guide limiting plate 36 will not obstruct the rotational movement of the locking rod 215. A guide groove 361 located on the upper front side of the first locking tongue 32 is provided on the guide limiting plate 36. The guide groove 361 can be used to guide the rotation and forward movement of the first locking tongue 32. The tilt is limited so that when the locking rod 215 rotates backward, it can smoothly enter the U-shaped slot 321. A rotation limiting plate 362 is fixedly installed on the guide limiting plate 36, located in front of the engagement point between the locking head 331 and the L-shaped locking slot 323. When the pull cable 34 pulls the first locking plate 33 to rotate, when the locking head 331 abuts against the rear of the rotation limiting plate 362, the first locking plate 33 will not continue to rotate backward, thus realizing the rotation limitation of the first locking plate 33. At this time, the rotation limitation of the locking head 331 on the first locking tongue 32 is also released.

[0034] A novel air-exhalation cylinder seat includes the aforementioned universal air-exhalation cylinder bottom locking mechanism. This novel air-exhalation cylinder seat also includes a backrest support plate 34. Two fixed pressing seats 12 press and fix the first support plate 11 to the upper front side of the backrest support plate 34. A support handle 43 is fixedly installed on both the left and right sides of the front part of the backrest support plate 34. A ring-shaped locking seat 43 with an opening is provided on the lower front side of the backrest support plate 34. The ring-shaped locking seat 43 is used to lock the head of the air-exhalation cylinder. When installing and fixing the air-exhalation cylinder on the backrest support plate 34, the L-shaped swing plate 21 is first in the unlocked state, and then the head of the air-exhalation cylinder is inserted into the ring-shaped locking seat 43. After the bottle head is secured, the bottle bottom is pushed backward. During this backward movement, the bottle bottom smoothly engages between the L-shaped swing plate 21 and the telescopic locking plate 22, thus securing the empty exhalation bottle. A pull cable handle 44 is provided on the lower front side of one of the support handles 42. The pull cable handle 44 is fixedly connected to the front end of the pull cable 34, and the pull cable handle 44 can slide back and forth relative to the support handle 42. Specifically, the guide tube at the rear of the pull cable handle 44 is fitted into the circular hole of the support handle 44. When the pull cable handle 44 is pulled, the guide tube at the rear always moves within the circular hole, thereby ensuring the stable reciprocating movement of the pull cable handle 44.

[0035] In this utility model, "upper", "lower", "front", "back", "left", and "right" are all relative positions used to facilitate the description of positional relationships, and therefore cannot be understood as absolute positions as limitations on the scope of protection.

[0036] Except for the technical features described in the specification, all other technologies are known to those skilled in the art.

[0037] The preferred embodiments and examples of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments and examples. For those skilled in the art, several improvements and modifications can be made without departing from the concept of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A universal empty breathing bottle bottom locking mechanism, characterized in that, The device includes a first support base, a swing-locking bracket, and a locking and limiting mechanism. The swing-locking bracket includes an L-shaped swing plate, a telescopic locking plate, and a swing-pushing mechanism. The lower middle part of the L-shaped swing plate is hinged to the first support base. The swing-pushing mechanism is used to continuously apply a forward swinging thrust to the lower part of the L-shaped swing plate. The rear part of the telescopic locking plate is slidably disposed on the upper front side of the L-shaped swing plate, and the telescopic locking plate can move back and forth and be positioned relative to the L-shaped swing plate. An empty exhalation bottle bottom locking space is formed between the front part of the telescopic locking plate and the lower part of the L-shaped swing plate. The locking and limiting mechanism is disposed on the first support base and is used to lock and limit the swing of the lower part of the L-shaped swing plate.

2. The universal empty breathing bottle bottom locking mechanism according to claim 1, characterized in that, The first support base includes a first support plate, the left and right ends of which are respectively secured to the bottom of a fixed pressing base, and a countersunk hole is provided at the upper and lower ends of the fixed pressing base.

3. The universal empty breathing bottle bottom locking mechanism according to claim 2, characterized in that, in A support shaft is fixedly installed on the upper front side of the first support plate. The lower middle part of the L-shaped swing plate is rotatably sleeved on the support shaft. The swing pushing mechanism includes a torsion spring, which is sleeved on the support shaft. One torsion arm of the torsion spring presses against the front side wall of the first support plate, and the other torsion arm presses against the lower rear side of the L-shaped swing plate.

4. The universal empty breathing bottle bottom locking mechanism according to claim 1, characterized in that, The telescopic locking plate includes a first horizontal plate, and an inclined limiting plate is fixedly installed on the front side of the first horizontal plate. The inclined limiting plate is in a state of being lower in the front and higher in the back. A first sliding groove distributed in the front-back direction is provided on the left and right sides of the upper side of the second horizontal plate above the L-shaped swing plate. A second sliding groove distributed in the front-back direction is provided in the middle of the bottom side of the second horizontal plate. The rear part of the first horizontal plate is correspondingly slidably fitted into the first sliding groove and the second sliding groove.

5. The universal empty breathing bottle bottom locking mechanism according to claim 4, characterized in that, in A first positioning hole and a first elongated hole are respectively provided at the bottom front side of the first slide and at the middle upper side of the second slide. A second elongated hole and a second positioning hole adapted to the first positioning hole and the first elongated hole are respectively provided at the rear part of the first horizontal plate. The first horizontal plate can be fixed on the second horizontal plate by means of bolt connection.

6. The universal empty breathing bottle bottom locking mechanism according to claim 5, characterized in that, in The inclined limiting plate is provided with a clamping lug on each of its left and right front sides. The two clamping lugs are distributed in a figure-eight shape, and a rubber post is fixedly installed at the rear of each clamping lug.

7. The universal empty breathing bottle bottom locking mechanism according to claim 6, characterized in that, A protective cover is fixedly installed on the upper part of the inclined limiting plate.

8. The universal empty breathing bottle bottom locking mechanism according to claim 2, characterized in that, The locking and limiting mechanism includes a second support base, a first locking tongue, a first locking plate, a pull wire, and a spring. The second support base is fixedly installed on the lower right side of the front side of the first support plate. A pull wire through hole is provided at the lower part of the second support base. A locking rod is provided on the lower right side of the L-shaped swing plate. The middle part of the first locking tongue is rotatably hinged to the second support base. The first locking plate is √-shaped, and the protruding part of the middle area of ​​the first locking plate is hinged to the second support base. The first locking tongue and the first locking plate are distributed vertically opposite each other. A locking rod is provided on the upper part of the first locking tongue. The U-shaped slot is designed to fit the first locking tongue. An L-shaped locking slot is provided at the lower part of the first locking tongue. One end of the pull cable passes through the pull cable hole and is fixedly connected to the lower part of the first locking plate. The spring is sleeved on the movable end of the pull cable and is clamped between the lower part of the second support and the lower part of the first locking plate. The spring is always in a compressed state. The locking rod can enter the U-shaped slot during the backward swing. During the backward swing of the locking rod, which simultaneously drives the lower part of the first locking tongue to rotate forward, the locking head at the upper end of the first locking plate can be locked into the U-shaped slot under the push of the spring.

9. The universal empty breathing bottle bottom locking mechanism according to claim 8, characterized in that, The second support includes a guide limiting plate, a guide groove located on the front side of the upper part of the first locking tongue, and a rotation limiting plate located on the front side of the engagement point between the locking head and the L-shaped locking groove fixedly mounted on the guide limiting plate.

10. A novel air-breathing cylinder seat, characterized in that, Including the universal air-exposure bottle bottom locking mechanism according to claim 8 or 9, the novel air-exposure bottle seat further includes a backrest support plate. The two fixed pressing seats press and fix the first support plate to the upper front side of the backrest support plate. A support handle is fixedly provided on both the left and right sides of the front part of the backrest support plate. An annular locking seat with an opening is provided on the lower front side of the backrest support plate. The annular locking seat is used to lock the bottle head of the air-exposure bottle. A pull cable handle is provided on the lower front side of one of the support handles. The pull cable handle is fixedly connected to the front end of the pull cable and the pull cable handle can slide back and forth relative to the support handle.

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