CN114177549A

CN114177549A - Joint fixing device and power air supply respirator

Info

Publication number: CN114177549A
Application number: CN202111484945.1A
Authority: CN
Inventors: 李春朋; 房雪莲
Original assignee: Andanda Industrial Technology Shanghai Co ltd
Current assignee: Andanda Industrial Technology Shanghai Co ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-03-15

Abstract

The invention provides a joint fixing device and a powered air-supply respirator, which comprises a male end joint part and a female end joint part, wherein the male end joint part is provided with a male part body and a first male buckle formed on a public body: the first male buckle comprises a movable elastic sheet, a first clamping jaw extending from the first bottom surface of the movable elastic sheet and a hand-holding part formed on the second bottom surface of the movable elastic sheet; the female end connecting piece is provided with a female end base part, and a first female connector matched with the first clamping jaw is arranged on the female end base part; male end fastener and female end fastener are through inlaying first pin thread and inserting joint in the first female interface, through detaining hand digging portion drives the second end of activity shell fragment rotates around the first end of activity shell fragment and makes first female interface deviate from the separation from first pin thread. According to the invention, through arranging the first clamping jaw and the hand digging part, the first clamping jaw can be conveniently separated from the first female connector by pulling the hand digging part, so that the application of the first clamping jaw to occasions needing frequent buckling and separation can be fully met.

Description

Joint fixing device and power air supply respirator

Technical Field

The invention relates to the technical field of safety protection equipment, in particular to a joint fixing device and a power air supply respirator.

Background

The respiratory filter with the power air supply system is often used for a polishing workshop, a paint spraying workshop, a welding workshop, a disease control laboratory and the like, frequent cleaning and disinfection are needed in use, the buckling and the disassembling process of the respirator body waistband used in the traditional method are complex, and the production efficiency is seriously influenced by frequent disassembling, cleaning and disinfection.

SUMMARY OF THE PATENT FOR INVENTION

In view of the above problems, the present invention is directed to a joint fixing device and a powered air respirator, in which the joint fixing device can conveniently and quickly realize the quick and stable connection between a male end joint member and a female end joint member, and can also conveniently and quickly realize the separation between the male end joint member and the female end joint member when the relevant connection needs to be released. The purpose of the invention is realized by the following technical scheme:

the invention provides a joint fixing device, which comprises a male end joint part and a female end joint part, wherein the male end joint part is provided with a male part body and a first male buckle formed on a public body: the male part body is provided with a through hole which penetrates through the thickness of the male part body from the first bottom surface to the second bottom surface; the first male buckle comprises a movable elastic sheet extending in the through hole, a first clamping jaw extending from a first bottom surface of the movable elastic sheet and a hand-holding part formed on a second bottom surface of the movable elastic sheet, a first end of the movable elastic sheet is fixed on the male part body, and a second end of the movable elastic sheet is a free end; the hand-digging part is a structural body which is concave or convex from the second bottom surface of the movable elastic sheet; the female end connecting piece is provided with a female end base part, and a first female connector matched with the first clamping jaw is arranged on the female end base part; male end fastener and female end fastener are through inlaying first pin thread and inserting joint in the first female interface, through detaining hand digging portion drives the second end of activity shell fragment rotates around the first end of activity shell fragment and makes first female interface deviate from the separation from first pin thread.

Furthermore, the first claw is provided with an extension part extending from the first bottom surface of the movable elastic sheet along the first direction and a hook part extending from the outer end of the extension part to the second direction.

Further, the hook part has a triangular cross section, and the cross-sectional dimension of the hook part is gradually reduced when the hook part extends from the extension part to the free end of the extension part.

Furthermore, the male end fastener is also provided with a second male buckle, the second male buckle is provided with a second clamping jaw extending out of the first bottom surface of the male part body, and a second female connector matched with the second clamping jaw is arranged on the female end fastener.

Further, the second jaw includes an L-shaped jaw having a lateral extension formed extending in the first direction on the first bottom surface and a longitudinal extension formed extending from an outer end of the lateral extension in the second direction.

Furthermore, the second male buckle comprises two second clamping jaws, the two second clamping jaws and the first clamping jaw are distributed in a triangular structure form through the central connecting line of the two second clamping jaws and the connecting line of the first bottom surface of the male part body are located on the same straight line.

Further, the first bottom surface is parallel to the second bottom surface, the first direction is a direction perpendicular to the first bottom surface and extending outwards, and the second direction is a direction parallel to the first bottom surface and extending upwards perpendicular to the first direction.

Furthermore, the male end fastener also comprises a limiting lug formed by extending from the first bottom surface of the male part body to the first direction, and the female end fastener is provided with a limiting bayonet adapted to the limiting lug.

The invention further provides a powered air supply respirator which comprises a respirator body and a waistband, wherein the respirator body and the waistband are fixedly connected by the joint fixing device, the waistband is fixed with a male end joint, and the respirator body is provided with a female end joint.

Further, the waistband has first area section, second area section and joint area section, first area section and second area section are connected respectively and are fixed at joint area section both ends, the public end fastener forms the joint area section, the joint area section adopts multilayer material preparation to form, multilayer material includes that PU that sets gradually from outside to inside is outer, EVA intermediate level, PP constructs layer and EVA inlayer and flexible inlayer, first public knot and/or second public knot all construct layer integrated into one piece with PP, and first jack catch and/or second jack catch and/or spacing lug penetrate EVA intermediate level and PU skin and extend to first direction.

The invention has the beneficial effects that:

(1) according to the joint fixing device, the first clamping jaw is arranged on the first bottom surface of the movable elastic sheet, the hand digging part is arranged on the second bottom surface of the movable elastic sheet, and the first clamping jaw can be conveniently separated from the first female connector by pulling the hand digging part, so that the joint fixing device can be fully applied to occasions needing frequent buckling and separation;

(2) according to the joint fixing device, the first clamping jaw, the second clamping jaw, the limiting lug and other connecting structures are arranged, so that the female end joint and the male end joint can be stably and reliably connected, and the stability and reliability of connection are guaranteed when the joint fixing device is applied;

(3) the respirator waistband structure provided by the invention has the advantage that the comfort and the durability can be further improved on the premise of meeting the use performance by virtue of the design of multiple layers of materials.

Drawings

FIG. 1 is a schematic view of a first bottom surface of a preferred male end engagement member according to embodiment 1 of the present invention;

FIG. 2 is a schematic view of a second bottom surface of a preferred male end engagement member according to embodiment 1 of the present invention;

FIG. 3 is a schematic structural view of a preferred female end fitting in accordance with embodiment 1 of the present invention;

FIG. 4 is a schematic view of a waistband structure in example 2 of the present invention;

FIG. 5 is a schematic view showing the attachment of the respirator body and waistband of example 2 of the present invention;

FIG. 6 is a schematic view showing a multi-layer material structure of a waistband joining tape segment in example 3 of the invention;

in the figure:

100-male body; 121-a lateral extension; 310-splicing the tape sections;

100 a-a first bottom surface; 122-a longitudinal extension; 311-PU outer layer;

100 b-a second bottom surface; 130-a limit bump; a 312-EVA intermediate layer;

101-a through hole; 140-hand digging part; 313-PP building layer;

110-a first jaw; 200-female end base; 314-an EVA inner layer;

111-an extension; 211-a first female interface; 315-a flexible inner layer;

112-a hook portion; 220-a second female interface; 320-a first belt segment;

113-a movable spring plate 230-a limit bayonet 330-a second belt section;

120-a second jaw; 300-waistband; 400-respirator body.

Detailed Description

The technical solution of the preferred embodiment of the joint fixing device and the powered air-supplying respirator of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that in the following description, the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Example 1:

the present invention firstly provides a joint fixing device, which comprises a male end joint member and a female end joint member, wherein the male end joint member is provided with a male part body and a first male buckle and a second male buckle which are formed on a public body, as shown in fig. 1, a through hole 101 which penetrates through the thickness of the male part body from a first bottom surface 100a to a second bottom surface 100b is arranged on the male part body 100; the first male buckle comprises a movable elastic sheet 113 extending in the through hole 101, a first claw 110 extending from a first bottom surface of the movable elastic sheet, and a hand-holding part 140 formed on a second bottom surface of the movable elastic sheet, wherein a first end of the movable elastic sheet 113 is fixed on the male part body 100, and a second end of the movable elastic sheet 113 is a free end; the hand-digging part 140 is a structural body which is concave or convex from the second bottom surface of the movable elastic sheet; the second pin has a second jaw 120 extending from the first bottom surface 100a of the pin body, and in the drawing, the second jaw is an L-shaped jaw having a lateral extension 121 extending in a first direction on the first bottom surface and a longitudinal extension 122 extending in a second direction from an outer end of the lateral extension. The female end joint part is provided with a female end base part 200, and a first female connector 211 matched with the first clamping jaw 110 and a second female connector 220 matched with the second clamping jaw are arranged on the female end base part 200; male end fastener and female end fastener are through inlaying the first jack catch 110 of first male buckle and inserting in first female interface 211, the gomphosis of second jack catch is fixed in the female interface 220 of second, when needs are dismantled, through buckling hand portion 140 drives the second end (being the free end, the lower extreme of picture) of activity shell fragment 113 rotates around the first end of activity shell fragment to make first female interface 211 deviate from first jack catch 110, then can conveniently deviate from second jack catch 220 from the female interface 220 of second, thereby realize the separation of female end fastener and male end fastener.

In the illustrated embodiment, the first jaw 110 has an extension 111 extending from the first bottom surface of the movable spring plate in a first direction perpendicular to the first bottom surface and a hook 112 extending from an outer end of the extension in a second direction (upward direction in the illustration), and preferably, the hook 112 has a triangular cross section or a trapezoidal cross section, and the cross section of the hook is gradually reduced as the hook extends from the extension to a free end thereof, so that the first jaw 110 can be more conveniently and quickly inserted into the first female connector 210; in the figure, the second pin comprises two second claws 120, and in a preferred embodiment, the two second claws 120 and the first claw 110 are arranged in a triangular configuration with their center connecting lines, as shown in fig. 1, the connecting lines between the two second claws 120 and the first bottom surface 100a of the pin body are located on the same straight line, i.e., the extending portions of the two second claws 120 are located on the same plane.

In other embodiments, the first jaw 110 and the second jaw 120 may also take other structural forms, such as a column-shaped member or a ball-end member with a trapezoidal cross section, which extends outward in the first direction and gradually increases in thickness, and the first female connector and the second female connector correspondingly take other forms.

In a specific embodiment, the hand-holding portion 140 may be a concave structure formed on the second bottom surface 100b of the male portion body, or may be a convex structure formed on the second bottom surface 100b and protruding outward along a direction opposite to the first direction, as long as a fulcrum provided for being buckled by a finger or other tool is provided to move the movable elastic sheet 113 toward the second bottom surface so as to separate the first jaw from the first female connector.

In a preferred embodiment, the male portion body 100 of the male end fastener is a plate-type member with a first bottom surface parallel or substantially parallel to a second bottom surface, and the male portion body 100 and the first male buckle, the second male buckle and the hand-holding portion arranged thereon are integrally injection-molded structural members.

Considering that, since the free ends of the first and second jaws have a larger dimension than the section extending in the first direction, so that after the first and second jaws are snapped into the interface of the female end coupling, there will be a larger assembly gap between the first female interface 211 and the outer extension 111 of the first jaw, and between the second female interface 220 and the lateral extension 121 of the second jaw, which may affect the stability and reliability of the coupling after the coupling is fixed, in the illustrated embodiment, a two-way solution is provided for this problem:

the first scheme is as follows: the male end coupling member further includes a limit protrusion 130 extending from the first bottom surface 100a of the male portion body in the first direction, as shown in the figure, two limit protrusions 130 are disposed on the male portion body 100, and a limit bayonet 230 adapted to the limit protrusions is disposed on the female end coupling member. In general, the extending width of the limit lug 130 in the first direction is smaller than the extending width of the extending part 111 of the first jaw 110 in the first direction, and by such design, the limit lug 130 can be inserted into the limit bayonet 230 after the first jaw 110 is inserted into the first female connector 211, so as to avoid the occurrence of structural interference to cause connection failure of the first jaw 110 and the first female connector 211; in a more preferred embodiment, the thickness of the limit lug 130 in the second direction is smaller than the extension thickness of the hook portion 112 of the first jaw 110 in the second direction, and the assembly gap between the limit bayonet 230 adapted to the limit lug on the female end joint and the limit lug 130 is smaller than the assembly gap between the first female joint 211 and the first jaw extension portion 111, so that the male end joint and the female end joint can be fixedly connected more tightly and stably by the design that the first jaw and the second jaw are embedded into the first female joint and the second female joint and then the limit bayonet 130 and the limit bayonet 230 are further limited and clamped.

Scheme II: the transverse extension part 121 and the longitudinal extension part 122 of the second jaw are designed to have equal thickness, smooth transition is adopted at the joint of the transverse extension part and the longitudinal extension part, and meanwhile, an oblique baffle plate is arranged at the second female connector 220, so that the second jaw can be smoothly inserted and the assembling clearance between the transverse extension part and the longitudinal extension part is reduced as much as possible; on the other hand, the position of the gap between the movable elastic sheet 113 and the lower end of the through hole is provided with the limit structure 240 with the boss 241 suitable for the gap, so that the first claw 110 can fill the gap between the movable elastic sheet and the through hole through the boss 241 after being embedded into the first female connector 211, and the reliability and stability of connection are further ensured.

Example 2:

the embodiment provides a powered air supply respirator, which comprises a respirator body 400 and a waist belt 300, wherein the respirator body and the waist belt are connected by adopting the joint fixing device in the embodiment 1, a male end joint piece is fixed on the waist belt 300, and a female end joint piece is arranged on the respirator body 400.

As shown in fig. 4 and 5, the waist belt of the present embodiment has a first belt segment 320, a second belt segment 330 and a joint belt segment 310, the first belt segment 320 and the second belt segment 330 are respectively connected and fixed at two ends of the joint belt segment 310, wherein the male end joint is formed at the joint belt segment 310, the joint belt segment 310 is made of a multi-layer material, the multi-layer material includes a PU outer layer 311, an EVA middle layer 312, a PP construction layer 313, an EVA inner layer 314 and a flexible inner layer 315, which are sequentially arranged from outside to inside, the first male buckle and the second male buckle are integrally formed with the PP construction layer 313, and the first jaw 110, the second jaw 120 and the limit bump 130 may be covered by the EVA middle layer 312 and the PU outer layer 311, or may be formed by extending outwards through the EVA middle layer and the PU outer layer; with the outwardly protruding hand holding portion 140, the hand holding portion 140 is formed on the bottom surface of the PP construction layer facing the EVA inner layer, and is covered by the EVA inner layer 314 and the flexible inner layer 315.

In a preferred embodiment, the first band section 320 and the second band section 330 are made of PP material, and the first band section 320 and the second band section 330 are sewn on both ends of the joint band section, and the first band section 320 and the second band section 330 are respectively provided with a male plug-in end 321 and a female plug-in end 331 which can be plug-fitted, and when the respirator is worn, the first band section 320 and the second band section 330 are fitted and fixed by inserting the female plug-in end 331 into an interface of the male plug-in end 332.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, while the invention has been described in detail with reference to the foregoing preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims; the sizes in the drawings and the embodiments are not related to specific objects, and are not used for limiting the protection scope of the invention, and the sizes of the objects can be selected and changed according to actual needs.

Claims

1. A joint fixation device comprising a male end joint member and a female end joint member, the male end joint member having a male portion body and a first male snap formed on a publication body:

the male part body is provided with a through hole which penetrates through the thickness of the male part body from the first bottom surface to the second bottom surface;

the first male buckle comprises a movable elastic sheet extending in the through hole, a first clamping jaw extending from a first bottom surface of the movable elastic sheet and a hand-holding part formed on a second bottom surface of the movable elastic sheet, a first end of the movable elastic sheet is fixed on the male part body, and a second end of the movable elastic sheet is a free end; the hand-digging part is a structural body which is concave or convex from the second bottom surface of the movable elastic sheet;

the female end connecting piece is provided with a female end base part, and a first female connector matched with the first clamping jaw is arranged on the female end base part;

male end fastener and female end fastener are through inlaying first pin thread and inserting joint in the first female interface, through detaining hand digging portion drives the second end of activity shell fragment rotates around the first end of activity shell fragment and makes first female interface deviate from the separation from first pin thread.

2. The engagement fixture of claim 1, wherein the first jaw has an extension extending in a first direction from the first bottom surface of the movable spring and a hook extending in a second direction from an outer end of the extension.

3. A splice holding device as claimed in claim 2, in which the hook portion has a triangular cross-section, the cross-sectional dimension of the hook portion tapering as it extends from the extent to the free end thereof.

4. The joint fixture of claim 1, wherein the male end joint member further comprises a second male buckle having a second jaw extending from the first bottom surface of the male body, the female end joint member having a second female interface for receiving the second jaw.

5. An engagement fixture according to claim 4, wherein said second jaw comprises an L-shaped jaw having a lateral extension formed extending in a first direction on said first bottom surface and a longitudinal extension formed extending in a second direction from an outer end of said lateral extension.

6. A joint fixture according to claim 4 wherein the second pin comprises two second jaws, the two second jaws and the first jaw being arranged with their centre line in a triangular configuration, the two second jaws being in line with the line connecting the first bottom surface of the body of the pin.

7. A bonding fixture according to claim 2 or 5, wherein the first bottom surface is parallel to the second bottom surface, the first direction is a direction extending outwardly perpendicular to the first bottom surface, and the second direction is a direction extending upwardly parallel to the first bottom surface and perpendicular to the first direction.

8. The engagement fixture of any one of claims 1-6, wherein the male end engagement member further comprises a retention tab extending from the first bottom surface of the male portion body in a first direction, and the female end engagement member has a retention notch adapted to the retention tab.

9. A powered air supply respirator comprises a respirator body and a waistband, wherein the respirator body and the waistband are connected by the joint fixing device as claimed in any one of claims 1-8, a male end joint piece is fixed on the waistband, and a female end joint piece is arranged on the respirator body.

10. The powered air-supplying respirator of claim 9, wherein the belt has a first belt section, a second belt section and a joint belt section, the first belt section and the second belt section are respectively fixedly connected to two ends of the joint belt section, the male end fastener is formed on the joint belt section, the joint belt section is made of a multi-layer material, the multi-layer material comprises a PU outer layer, an EVA middle layer, a PP construction layer, an EVA inner layer and a flexible inner layer, the PU outer layer, the EVA middle layer, the PP construction layer, the EVA inner layer and the flexible inner layer are sequentially arranged from outside to inside, the first male buckle and/or the second male buckle are integrally formed with the PP construction layer, and the first jaw and/or the second jaw and/or the limiting bump extend in the first direction through the EVA middle layer and the PU outer layer.