Mechanically adjustable flame resistant protective apparel and method of adjusting

Abstract

The present application relates to the technical fields of flame-retardant protective clothing, and particularly relates to a flame-retardant protective clothing with mechanically adjustable tightness and a method for adjusting the tightness, which comprises a protective vest, symmetrical tightness belts are arranged on the protective vest, and one end of each tightness belt is connected with an adjusting device arranged on the protective vest; the adjusting device comprises a winder and a tightness assembly arranged on the winder; a supporting sleeve is arranged at one end of the winder, a plurality of locking mechanisms for limiting the tightness assembly are distributed along the circumference of the supporting sleeve; and a driving pushing piece is arranged in the supporting sleeve. By pressing the driving pushing piece, the plurality of locking mechanisms are driven to release the complete locking state of the tightness assembly, the tightness assembly is controlled to rotate and the rotation angle is limited through meshing transmission, the situation that the tightness is too tight or too loose during manual adjustment is avoided, and the tightness belt can be gathered or released through forward rotation or reverse rotation.

Description

Technical Field

[0001] This invention relates to the technical field of flame-retardant protective clothing, specifically a flame-retardant protective clothing with mechanically adjustable tightness and its adjustment method. Background Technology

[0002] Flame-retardant protective clothing is an essential piece of equipment for protecting the lives of workers and is widely used in industries such as fire protection, chemical, petroleum, and power. Currently, flame-retardant protective clothing on the market is mainly made of flame-retardant materials such as highly flame-retardant acrylonitrile fibers. These fabrics have the characteristics of not continuing to burn or melting after being removed from the fire source, effectively protecting the wearer from secondary injuries.

[0003] As a simplified form of flame-retardant protective clothing, protective vests feature a sleeveless or short-sleeved design, reducing fabric usage and structural complexity while ensuring core protection for the torso. Protective vests typically employ a modular design, allowing for easy adjustment mechanisms at the front, sides, or back.

[0004] Traditional elastic bands for adjustment mostly use elastic straps. These straps rely on the material's elastic deformation for adjustment, offering no precise, quantifiable control over tightness. Therefore, existing technologies use combinations of buckles or drawstrings to achieve multi-dimensional micro-adjustments to suit different body types. However, buckles and drawstrings primarily rely on friction or simple mechanical locking, resulting in relatively weak locking force. During the use of protective vests, the dynamic changes in the working environment can cause the adjustment mechanism to be subjected to repeated impacts or continuous tension, leading to buckles gradually loosening or drawstrings slipping, causing changes in tightness and making it impossible to maintain a stable adjustment state. Summary of the Invention

[0005] The purpose of this invention is to provide a flame-retardant protective suit with adjustable tightness to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A flame-retardant protective suit with mechanically adjustable tightness includes a protective vest, on which elastic bands are symmetrically arranged, and one end of each elastic band is connected to an adjustment device disposed on the protective vest.

[0008] The adjusting device includes a winder and a tensioning assembly disposed on the winder, with one end of the elastic band wound around the tensioning assembly;

[0009] A support sleeve is provided at one end of the winding device, and multiple locking mechanisms for limiting the tensioning components are distributed circumferentially inside the support sleeve.

[0010] A drive pusher is disposed inside the support sleeve. When the drive pusher is pressed down, it can release the locking mechanism from completely locking the tensioning component. After the end of the drive pusher inside the support sleeve engages with the tensioning component, it can adjust the tensioning component's winding of the elastic band.

[0011] The elastic band of the flame-retardant protective clothing with mechanically adjustable tension as described above: the tensioning assembly includes a rotating shaft, which is rotatably mounted on the take-up device, and one end of the elastic band is wound around the rotating shaft;

[0012] It also includes a connecting shaft, which is rotatably mounted on one end of the winding device and can pass through the winding device to connect with the rotating shaft. Multiple slots are distributed along the circumference on the outer wall of the connecting shaft.

[0013] The flame-retardant protective clothing with adjustable tightness as described above: the locking mechanism includes a plug tube, the plug tube is slidably connected to the inner wall of the support sleeve, a plug rod is slidably inserted into one end of the plug tube, and a locking block that can be inserted into the slot is provided at the end of the plug rod away from the plug tube;

[0014] It also includes a third spring, which is disposed inside the plug tube. One end of the third spring abuts against the inner end of the plug tube, and the other end abuts against the plug rod.

[0015] The flame-retardant protective clothing with adjustable tightness as described above: the locking block includes a triangular block and a right-angle block. When the locking block is fully locked to the connecting shaft, the triangular block and the right-angle block are simultaneously inserted into the slot.

[0016] The flame-retardant protective clothing with adjustable tightness as described above: the driving pusher includes a lifting ring, the lifting ring is slidably disposed in the support sleeve, and multiple connecting rods are hinged along the circumference of the lifting ring, the end of the connecting rod away from the lifting ring is hinged to the plug-in cylinder;

[0017] It also includes an elastic pressing element, which is arranged along the axial direction of the support sleeve.

[0018] The flame-retardant protective clothing with adjustable tightness as described above: the elastic pressing component includes a drive rod, on which a first convex ring and a second convex ring are formed in sequence along the radial direction. The drive rod is rotatably connected to the lifting ring, and a rotation limiting component is provided between one end of the drive rod and the connecting shaft, while the other end can pass through the support sleeve.

[0019] It also includes a first spring, which is sleeved on the drive rod. One end of the first spring abuts against the inner side of the support sleeve, and the other end abuts against the first convex ring.

[0020] The flame-retardant protective clothing with mechanically adjustable tightness as described above: the rotation limiting component includes an upper limit sleeve, the upper limit sleeve is slidably sleeved on the drive rod, and a plurality of first locking teeth are distributed circumferentially at the end of the upper limit sleeve away from the drive rod;

[0021] The second spring is sleeved on the drive rod, with one end of the second spring abutting against the upper limit sleeve and the other end abutting against the second convex ring;

[0022] A lower limit sleeve is disposed on the connecting shaft, and a plurality of second teeth that can engage with the first tooth are formed circumferentially at one end of the lower limit sleeve facing the upper limit sleeve.

[0023] The flame-retardant protective clothing with mechanically adjustable tightness as described above: the end of the support sleeve away from the take-up device is hinged with a protective cover.

[0024] A method for adjusting a mechanically adjustable flame-retardant protective suit as described in any of the above claims includes the following specific steps:

[0025] Step 1: When adjusting the tension of the elastic band, first remove the protective cover from the drive rod;

[0026] Step 2: By pressing the elastic pressing member, the elastic pressing member is squeezed into the support sleeve, and at the same time, multiple locking mechanisms are pushed simultaneously. When the first tooth on the upper limit sleeve and the second tooth on the lower limit sleeve are fully engaged, the locking mechanism releases part of the locking of the connecting shaft.

[0027] Step 3: When the elastic pressing component is pressed to the end of its stroke, under the transmission of the rotation limit component, the rotating shaft can be controlled to rotate and the rotation angle is limited. By rotating forward or backward, the elastic component can gather and roll up the elastic band.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] After removing the protection of the drive pusher, press the drive pusher to move towards the inside of the support sleeve. During the movement, multiple locking mechanisms are pushed simultaneously, causing the locking mechanisms to gradually pull out from the tensioning component. When the drive pusher is fully engaged with the tensioning component, the limiting state of the locking mechanism on the tensioning component is partially released. Afterward, when the drive pusher rotates, the compressive force on the tensioning component is greater than the locking force of the locking mechanism on the tensioning component, allowing the locking mechanism to automatically retract. Through meshing transmission, the rotation of the tensioning component can be controlled and the rotation angle is limited, avoiding situations where it may be too tight or too loose during manual adjustment. Forward or reverse rotation can achieve the tightening or loosening of the elastic band. The two-way adjustment function allows the protective vest to adapt to the needs of different body types and different usage scenarios, improving the versatility and practicality of the protective clothing. After adjustment, the locking mechanism can automatically reset, ensuring that the elastic band will not loosen and spring back due to external force, effectively avoiding the risk of adjustment failure. Attached Figure Description

[0030] Figure 1 This is a structural diagram of a flame-retardant protective suit with adjustable tightness.

[0031] Figure 2 This is a schematic diagram of the structure of the winding device and support sleeve in a flame-retardant protective suit with adjustable tension.

[0032] Figure 3 This is a schematic diagram of the tensioning components and support sleeve in a flame-retardant protective suit with adjustable tension.

[0033] Figure 4 This is a schematic diagram of the structure of the protective cover and support sleeve in a flame-retardant protective suit with adjustable tightness.

[0034] Figure 5 This is a schematic diagram of the internal structure of the support sleeve in a flame-retardant protective suit with adjustable tightness.

[0035] Figure 6 This is a schematic diagram of the drive and push components in a flame-retardant protective suit with adjustable tightness.

[0036] Figure 7 This is a schematic diagram of the elastic pressing component in a flame-retardant protective suit with adjustable tightness.

[0037] Figure 8 This is a schematic diagram of the upper limit sleeve in a flame-retardant protective suit with adjustable tightness.

[0038] Figure 9 This is a schematic diagram of the connecting shaft and locking mechanism in a flame-retardant protective suit with adjustable tightness.

[0039] In the diagram: 1. Winder; 2. Elastic band; 3. Support sleeve; 4. Protective cover; 5. Rotating shaft; 6. Connecting shaft; 601. Slot; 7. Drive rod; 701. First convex ring; 702. Second convex ring; 8. Upper limit sleeve; 9. First spring; 10. Second spring; 11. Lifting ring; 12. Connecting rod; 13. Lower limit sleeve; 14. Insert sleeve; 15. Third spring; 16. Insert rod; 17. Locking block. Detailed Implementation

[0040] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0041] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0042] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, and elements well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0043] Please see Figures 1-9 In this embodiment of the invention, a flame-retardant protective suit with adjustable elasticity and its adjustment method are provided, including a protective vest, on which elastic bands 2 are symmetrically arranged, and one end of the elastic bands 2 is connected to an adjustment device provided on the protective vest.

[0044] The adjusting device includes a winder 1 and a tensioning component disposed on the winder 1, with one end of the elastic band 2 wrapped around the tensioning component;

[0045] A support sleeve 3 is disposed at one end of the winding device 1. Multiple locking mechanisms for limiting the tensioning components are distributed circumferentially inside the support sleeve 3.

[0046] A drive pusher is disposed inside the support sleeve 3. When the drive pusher is pressed down, it can release the locking mechanism from completely locking the tensioning component. After the end of the drive pusher inside the support sleeve 3 engages with the tensioning component, it can adjust the tensioning component's winding of the elastic band 2.

[0047] In this embodiment, when the protective vest is worn, the tightness of the elastic band 2 is adjusted according to the wearer's body shape. After the protection of the driving pusher is released, the driving pusher is pressed to move towards the inside of the support sleeve 3. During the movement, multiple locking mechanisms are pushed simultaneously, causing the locking mechanisms to gradually pull out from the elastic component. When the driving pusher is fully engaged with the elastic component, the limiting state of the locking mechanism on the elastic component is partially released. Afterward, when the driving pusher rotates, the squeezing force on the elastic component is greater than the locking force of the locking mechanism on the elastic component, so that the locking mechanism can automatically give way. Through the meshing transmission, the rotation of the elastic component can be controlled and the rotation angle is limited, avoiding the situation of being too tight or too loose when manually adjusted. Forward or reverse rotation can realize the tightening or release of the elastic band 2. The bidirectional adjustment function allows the protective vest to adapt to the needs of different body shapes and different usage scenarios, improving the versatility and practicality of the protective clothing. After the adjustment is completed, the locking mechanism can automatically reset, ensuring that the elastic band 2 will not loosen and rebound due to external force, effectively avoiding the risk of adjustment failure.

[0048] As a further embodiment of the present invention, please refer to... Figure 9 The elastic assembly includes a rotating shaft 5, which is rotatably mounted on the winding device 1, and one end of the elastic band 2 is wound around the rotating shaft 5;

[0049] It also includes a connecting shaft 6, which is rotatably mounted on one end of the winding device 1 and can pass through the winding device 1 to connect with the rotating shaft 5. Multiple slots 601 are distributed along the circumference on the outer wall of the connecting shaft 6.

[0050] The locking mechanism includes a plug-in cylinder 14, which is slidably connected to the inner wall of the support sleeve 3. A plug-in rod 16 is slidably inserted into one end of the plug-in cylinder 14, and a locking block 17 that can be inserted into the slot 601 is provided at the end of the plug-in rod 16 away from the plug-in cylinder 14.

[0051] It also includes a third spring 15, which is disposed inside the plug tube 14. One end of the third spring 15 abuts against the inner end of the plug tube 14, and the other end abuts against the plug rod 16.

[0052] Preferably, the locking block 17 includes a triangular block and a right-angle block. When the locking block 17 completely locks the connecting shaft 6, the triangular block and the right-angle block are simultaneously inserted into the slot 601.

[0053] The multiple locking mechanisms distributed along the circumference of the inner side of the support sleeve 3 provide all-round limiting constraints compared to single-point locking. Through the coordinated action of multiple locking mechanisms, even if a single mechanism wears out or fails, the other mechanisms can still maintain the overall locking effect.

[0054] In the initial state, the third spring 15 is in a pre-compressed state, and the locking block 17 is fully inserted into the slot 601. At this time, the connecting shaft 6 is locked. When the tightness of the elastic band 2 needs to be adjusted, under the pressure of the driving pusher, multiple plug-in tubes 14 can move linearly in the radial direction of the connecting shaft 6 at the same time. The plug-in tubes 14 move in a direction away from the connecting shaft 6. While the plug-in tubes 14 are moving, they drive the plug-in rod 16 to move synchronously, so that the locking block 17 is pulled out of the slot 601. This ensures that the right-angle block on the locking block 17 is completely disengaged from the slot 601, while the triangular block is still inserted in the slot 601. This ensures that the rotation amplitude of the rotating shaft 5 is limited during the adjustment process, and avoids the protective vest from suddenly becoming too loose due to excessive rotation, which would affect the wearing safety. This achieves the precise control capability that allows the tightness of the elastic band 2 to be adjusted in stages.

[0055] When the connecting shaft 6 rotates, the compressive force on the connecting shaft 6 is greater than the elastic force stored in the third spring 15. At this time, the slot 601 exerts an inclined compressive force on the locking block 17, which allows the locking block 17 to give way and the third spring 15 to be compressed and store elastic potential energy. After the connecting shaft 6 rotates until the slot 601 on it is aligned with the locking block 17 again, the elastic potential energy of the third spring 15 is released, and the locking block 17 is squeezed into the slot 601 and the connecting shaft 6 to limit it, so as to realize the staged adjustment of the elastic band 2 and ensure that the tension of the elastic band 2 is moderate.

[0056] As a further embodiment of the present invention, please refer to... Figure 6 and Figure 7 The driving pusher includes a lifting ring 11, which is slidably disposed in the support sleeve 3, and a plurality of connecting rods 12 are hinged along the circumference of the lifting ring 11. The end of the connecting rod 12 away from the lifting ring 11 is hinged to the plug-in cylinder 14.

[0057] It also includes an elastic pressing element, which is arranged along the axial direction of the support sleeve 3.

[0058] The elastic pressing component includes a drive rod 7, on which a first convex ring 701 and a second convex ring 702 are formed in sequence along the radial direction. The drive rod 7 is rotatably connected to the lifting ring 11, and a rotation limiting component is provided between one end of the drive rod 7 and the connecting shaft 6, while the other end can pass through the support sleeve 3.

[0059] It also includes a first spring 9, which is sleeved on the drive rod 7. One end of the first spring 9 abuts against the inner side of the support sleeve 3, and the other end abuts against the first convex ring 701.

[0060] In this embodiment, when adjusting the tension of the elastic band 2, the drive rod 7 is pressed, and the lifting ring 11 is slidably connected to the inner wall of the support sleeve 3, so that the drive rod 7 can move linearly along the axis of the support sleeve 3. During the movement, the connecting rod 12 can simultaneously squeeze multiple plug-in cylinders 14, thereby pushing the plug-in cylinders 14. When the lifting ring 11 moves to the end of its stroke, the locking block 17 partially releases the lock on the slot 601, which facilitates the subsequent rotation of the rotating shaft 5 and limits the rotation amplitude of the rotating shaft 5.

[0061] As a further embodiment of the present invention, please refer to... Figure 8 The rotation limiting component includes an upper limit sleeve 8, which is slidably sleeved on the drive rod 7. The end of the upper limit sleeve 8 away from the drive rod 7 has a plurality of first locking teeth distributed along the circumference.

[0062] The second spring 10 is sleeved on the drive rod 7. One end of the second spring 10 abuts against the upper limit sleeve 8, and the other end abuts against the second convex ring 702.

[0063] The lower limit sleeve 13 is disposed on the connecting shaft 6. The lower limit sleeve 13 has a plurality of second teeth that can mesh with the first tooth along the circumference at one end facing the upper limit sleeve 8.

[0064] The end of the support sleeve 3 furthest from the winding device 1 is hinged with a protective cover 4.

[0065] In this embodiment, the side of the second locking tooth facing the first locking tooth is arranged in a triangular structure. When the first locking tooth and the second locking tooth are engaged, the inclined surface of the first locking tooth abuts against the inclined surface of the second locking tooth. After the locking block 17 partially releases the lock on the slot 601, the elastic force of the second spring 10 is greater than that of the third spring 15. When the upper limit sleeve 8 rotates, the first locking tooth generates an inclined pressing force on the second locking tooth, so that the lower limit sleeve 13 rotates synchronously with the upper limit sleeve 8. The elastic band 2 can be tightened or released by rotating forward or backward.

[0066] A method for adjusting a mechanically adjustable flame-retardant protective suit as described in any of the above claims includes the following specific steps:

[0067] Step 1: When adjusting the tension of the elastic band 2, first remove the protective cover 4 from the drive rod 7;

[0068] Step 2: By pressing the elastic pressing member, the elastic pressing member is squeezed into the support sleeve 3, and at the same time, multiple locking mechanisms are pushed simultaneously. When the first tooth on the upper limit sleeve 8 and the second tooth on the lower limit sleeve 13 are fully engaged, the locking mechanism releases part of the locking of the connecting shaft 6.

[0069] Step 3: When the elastic pressing component is pressed to the end of the stroke, under the transmission of the rotation limit component, the rotating shaft 5 can be controlled to rotate and the rotation angle is limited. By rotating forward or backward, the elastic component can gather and roll up the elastic band 2.

[0070] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0071] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A flame-retardant protective suit with adjustable elasticity, comprising a protective vest, wherein elastic bands (2) are symmetrically arranged on the protective vest, one end of each elastic band (2) being connected to an adjustment device disposed on the protective vest, characterized in that... ； The adjusting device includes a winding device (1) and a tensioning assembly disposed on the winding device (1), and one end of the elastic band (2) is wound around the tensioning assembly; A support sleeve (3) is provided at one end of the winding device (1), and a plurality of locking mechanisms for limiting the tensioning components are distributed along the circumference inside the support sleeve (3). A drive pusher is disposed inside the support sleeve (3). When the drive pusher is pressed down, it can release the locking mechanism from completely locking the tensioning component. After the end of the drive pusher placed inside the support sleeve (3) engages with the tensioning component, it can adjust the tensioning component's winding of the elastic band (2).

2. The flame-retardant protective suit with mechanically adjustable tightness according to claim 1, characterized in that, The elastic assembly includes a rotating shaft (5), which is rotatably mounted on the winding device (1), and one end of the elastic band (2) is wound around the rotating shaft (5); It also includes a connecting shaft (6), which is rotatably mounted on one end of the winding device (1) and can pass through the winding device (1) to connect with the rotating shaft (5). Multiple slots (601) are distributed along the circumference on the outer wall of the connecting shaft (6).

3. The flame-retardant protective suit with mechanically adjustable tightness according to claim 2, characterized in that, The locking mechanism includes a plug tube (14), which is slidably connected to the inner wall of the support sleeve (3). A plug rod (16) is slidably inserted into one end of the plug tube (14), and a locking block (17) that can be inserted into the slot (601) is provided at the end of the plug rod (16) away from the plug tube (14). It also includes a third spring (15), which is disposed inside the plug tube (14). One end of the third spring (15) abuts against the inner end of the plug tube (14), and the other end abuts against the plug rod (16).

4. The flame-retardant protective suit with mechanically adjustable tightness according to claim 3, characterized in that, The locking block (17) includes a triangular block and a right-angle block. When the locking block (17) completely locks the connecting shaft (6), the triangular block and the right-angle block are simultaneously inserted into the slot (601).

5. A flame-retardant protective suit with mechanically adjustable tightness according to claim 3, characterized in that, The driving pusher includes a lifting ring (11), which is slidably disposed in the support sleeve (3), and a plurality of connecting rods (12) are hinged along the circumference of the lifting ring (11). The end of the connecting rod (12) away from the lifting ring (11) is hinged to the plug tube (14). It also includes an elastic pressing element, which is arranged along the axial direction of the support sleeve (3).

6. The flame-retardant protective suit with mechanically adjustable tightness according to claim 5, characterized in that, The elastic pressing component includes a drive rod (7), on which a first convex ring (701) and a second convex ring (702) are formed in sequence along the radial direction. The drive rod (7) is rotatably connected to the lifting ring (11), and a rotation limiting component is provided between one end of the drive rod (7) and the connecting shaft (6), while the other end can pass through the support sleeve (3). It also includes a first spring (9), which is sleeved on the drive rod (7). One end of the first spring (9) abuts against the inner side of the support sleeve (3), and the other end abuts against the first convex ring (701).

7. The flame-retardant protective suit with mechanically adjustable tightness according to claim 6, characterized in that, The rotation limiting component includes an upper limit sleeve (8), which is slidably sleeved on the drive rod (7). The end of the upper limit sleeve (8) away from the drive rod (7) has a plurality of first locking teeth distributed along the circumference. The second spring (10) is sleeved on the drive rod (7). One end of the second spring (10) abuts against the upper limit sleeve (8), and the other end abuts against the second convex ring (702). The lower limit sleeve (13) is disposed on the connecting shaft (6). The lower limit sleeve (13) has a plurality of second teeth that can mesh with the first tooth along the circumference at one end facing the upper limit sleeve (8).

8. The flame-retardant protective suit with mechanically adjustable tightness according to claim 1, characterized in that, The support sleeve (3) is hinged to a protective cover (4) at the end away from the winding device (1).

9. A method for adjusting the mechanically adjustable tightness of a flame-retardant protective suit as described in any one of claims 1-8, characterized in that, The specific steps include the following: Step 1: When adjusting the tension of the elastic band (2), first remove the protective cover (4) from the drive rod (7); Step 2: By pressing the elastic pressing member, the elastic pressing member is squeezed into the support sleeve (3), and at the same time, multiple locking mechanisms are pushed simultaneously. When the first tooth on the upper limit sleeve (8) and the second tooth on the lower limit sleeve (13) are fully engaged, the locking mechanism releases part of the locking of the connecting shaft (6). Step 3: When the elastic pressing part is pressed to the end of the stroke, under the transmission of the rotation limit part, the rotating shaft (5) can be controlled to rotate and the rotation angle is limited. The elastic component can be used to gather and roll up the elastic band (2) by rotating forward or backward.

Images