Mask connecting structure for fire-fighting AR helmet

Abstract

The utility model discloses a fire-fighting AR helmet mask connecting structure, which comprises a first connecting rod and a second connecting rod, the first connecting rod is connected with a helmet body, the second connecting rod is connected with a mask, and the first connecting rod and the second connecting rod are connected in a front-back sliding manner. Locking mechanisms used for locking the relative positions of the first connecting rod and the second connecting rod are arranged in the first connecting rod and the second connecting rod. The helmet body and the face mask are connected through the first connecting rod and the second connecting rod which can slide front and back relatively, so that the function that the face mask is moved away from the face of a wearer without taking down the helmet is achieved.

Description

Technical Field

[0001] The utility model relates to the field of fire helmets, in particular to a mask connecting structure for a fire AR helmet. Background Art

[0002] Fire helmets are fireproof and high-temperature resistant helmets worn by firefighters in firefighting scenarios. They are important devices for protecting the firefighters' heads. Currently, the fire helmets used by firefighters are usually half-helmet helmets composed of a helmet shell, a transparent eye shield, a shawl, a buffer layer, etc. When rescuing in scenes with a lot of smoke such as indoors, firefighters will wear a breathing mask covering their faces. Since the visibility in this scene is very poor, there are now fire helmets that use AR technology to assist firefighters in identifying the surrounding environment under conditions of poor visibility. At the same time, a breathing mask is usually provided on the front side of the helmet, but the breathing mask is usually fixed to the helmet and cannot be moved, or the helmet and the mask are separated, and the breathing mask needs to be worn first and then the helmet. Therefore, in the event of an accident at the fire scene or when the firefighter wants to move the breathing mask away from the face during a rest outside the fire scene, the helmet needs to be removed, which causes inconvenience in use. Utility Model Content

[0003] The utility model aims to provide a mask connecting structure for a fire-fighting AR helmet, which connects the helmet body and the mask through a first connecting rod and a second connecting rod that can slide back and forth relatively, thereby realizing the function of removing the mask from the wearer's face without removing the helmet.

[0004] The technical solution adopted by the utility model to solve the above problems is:

[0005] A mask connection structure for a fire AR helmet comprises a first connecting rod and a second connecting rod, wherein the first connecting rod is connected to the helmet body, the second connecting rod is connected to the mask, the first connecting rod and the second connecting rod are connected to each other in a forward and backward sliding manner, and a locking mechanism for locking the relative position of the first connecting rod and the second connection is arranged inside the first connecting rod and the second connecting rod.

[0006] In the above technical solution, preferably, the locking mechanism includes a slot and a buckle, the slots are provided in plurality and are opened on the side of the first connecting rod at equal intervals, the buckle is rotatably provided on the second connecting rod and is provided with a protrusion that can be inserted into the slot, and a first spring is provided between the buckle and the second connecting rod to drive the protrusion into the slot.

[0007] In the above technical solution, preferably, the first connecting rod is provided with two and is symmetrically connected to the left and right sides of the helmet body relative to the helmet body, the second connecting rod is provided with two and is symmetrically connected to the left and right sides of the mask relative to the mask, and the first connecting rod and the second connecting rod on the left and right sides are linearly slidably connected in a one-to-one manner.

[0008] In the above technical solution, preferably, the protrusion and the slot are provided with inclined surfaces that slide in cooperation with each other when the first connecting rod slides backward relative to the second connecting rod.

[0009] In the above technical solution, preferably, anti-slip grooves are provided on the outer side surface of the buckle.

[0010] In the above technical solution, preferably, the first connecting rod is hingedly connected to the helmet body, and the second connecting rod is hingedly connected to the mask.

[0011] In the above technical solution, preferably, a connecting mechanism is arranged between the first connecting rod and the helmet body, the connecting mechanism includes a connector and a fixing screw, a mounting hole for inserting the connector is arranged on the helmet body, the connector and the mounting hole are respectively provided with mutually engaging protrusions and grooves, a threaded hole is arranged on the first connecting rod, the threaded section of the fixing screw passes through the connector and is fixed in the threaded hole, and a second spring in a compressed state is arranged between the head of the fixing screw and the connector.

[0012] In the above technical solution, preferably, the top end of the mask is hingedly connected to the helmet body through a connecting piece.

[0013] In the above technical solution, preferably, the first connecting rod and the second connecting rod are fixedly connected to the helmet body and the mask respectively, and sealing strips that abut against each other are provided at the contact positions of the helmet body and the mask.

[0014] Compared with the prior art, the utility model has the following advantages and effects:

[0015] The utility model uses a locking mechanism to unlock and drive the second connecting rod to slide forward relative to the first connecting rod, so that the mask moves forward relative to the helmet body to separate the mask from the face. Therefore, the utility model can realize the function of removing the mask from the wearer's face without taking off the helmet, so as to facilitate the wearer's use. The locking mechanism is used to lock the first connecting rod and the second connecting rod after relative sliding, reducing the risk of the first connecting rod and the second connecting rod sliding relative to each other during the movement, thereby reducing the risk of the mask and the wearer's face being separated due to shaking during the movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the use status of the mask connection structure for the fire AR helmet according to the embodiment of the utility model.

[0017] Figure 2 yes Figure 1 Cross-sectional view at point A.

[0018] Figure 3 yes Figure 1 Schematic diagram of the structure of the first connecting rod.

[0019] Figure 4 yes Figure 1 Schematic diagram of the structure of the second connecting rod.

[0020] Figure 5 It is a schematic diagram of the use status of the first embodiment.

[0021] Figure 6 yes Figure 5 Schematic diagram of the connection mechanism inside the middle helmet body.

[0022] Figure 7 It is a schematic diagram of the use status of the second embodiment.

[0023] Figure 8 It is a cross-sectional view of the helmet body in the third embodiment and a schematic diagram of the state when the mask is separated.

[0024] Among them, there are a first connecting rod 1, a second connecting rod 2, a helmet body 3, a mask 4, a locking mechanism 5, a slot 51, a buckle 52, a protrusion 53, a first spring 54, a slope 55, an anti-slip pattern 56, a connecting mechanism 6, a connector 61, a fixing screw 62, a mounting hole 63, a protrusion 64, a groove 65, a threaded hole 66, a second spring 67, a connector 7, and a sealing strip 8. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0026] See also Figure 1-Figure 8 The present embodiment provides a mask connection structure for a fire AR helmet, comprising a first connecting rod 1 and a second connecting rod 2, wherein the first connecting rod 1 is connected to a helmet body 3, the second connecting rod 2 is connected to a mask 4, the first connecting rod 1 and the second connecting rod 2 are slidably connected to each other, and a locking mechanism 5 for locking the relative position of the first connecting rod 1 and the second connection is provided inside the first connecting rod 1 and the second connecting rod 2.

[0027] During the use of the utility model, when the wearer wants to remove the mask 4 from the face, the locking mechanism 5 can be unlocked first to allow the first connecting rod 1 and the second connecting rod 2 to move, and then the second connecting rod 2 can be driven to slide forward relative to the first connecting rod 1, so that the mask 4 moves forward relative to the helmet body 3 to separate the mask 4 from the face. Therefore, the utility model can realize the function of removing the mask 4 from the wearer's face without removing the helmet body 3, thereby facilitating the wearer's use.

[0028] The locking mechanism 5 is used to lock the first connecting rod 1 and the second connecting rod 2 after relative sliding, thereby reducing the risk of the first connecting rod 1 and the second connecting rod 2 sliding relative to each other due to shaking during movement, thereby reducing the risk of the mask 4 being separated from the wearer's face.

[0029] See also Figure 1 The first connecting rods 1 are provided with two and are symmetrically connected to the left and right sides of the helmet body 3 relative to the helmet body 3. The second connecting rods 2 are provided with two and are symmetrically connected to the left and right sides of the mask 4 relative to the mask 4. The first connecting rods 1 and the second connecting rods 2 on the left and right sides are linearly slidably connected in a one-to-one manner.

[0030] The connection between the mask 4 and the helmet body 3 is improved by connecting the first connecting rod 1 and the second connecting rod 2 on both sides of the helmet body 3 and the mask 4, thereby reducing the shaking degree of the mask 4 during movement.

[0031] See also Figure 2-Figure 4 The locking mechanism 5 includes a slot 51 and a buckle 52. The slots 51 are provided in plurality and are opened at equal intervals on the side of the first connecting rod 1. The buckle 52 is rotatably provided on the second connecting rod 2 and is provided with a protrusion 53 that can be inserted into the slot 51. A first spring 54 is provided between the buckle 52 and the second connecting rod 2 to drive the protrusion 53 to be inserted into the slot 51.

[0032] When the first connecting rod 1 and the second connecting rod 2 are locked by the locking mechanism 5, the protrusion 53 on the buckle 52 is inserted into one of the slots 51 under the action of the first spring 54, so that the second connecting rod 2 is fixed on the first connecting rod 1 under the action of the buckle 52 and the slot 51, so that the locking mechanism 5 can lock the relative positions of the first connecting rod 1 and the second connecting rod 2, thereby ensuring that the mask 4 can always fit the wearer's face; when the wearer wants to move the mask 4, it is necessary to press the buckles 52 on the left and right sides with the fingers of both hands respectively, so that the protrusion 53 moves out of the slot 51 to unlock the locking mechanism 5, at this time, the first spring 54 is compressed, and the palms of both hands are pressed on the second connecting rod 2 and drive the second connecting rod 2 to slide on the first connecting rod 1, after the adjustment is completed, it is only necessary to release the buckle 52, and the buckle 52 rotates under the action of the first spring 54 so that the protrusion 53 is re-engaged in a slot 51 at the corresponding position, thereby locking the adjusted position, which has the advantage of simple operation and is convenient for the wearer to operate quickly in an emergency.

[0033] See also Figure 2-Figure 4 The protrusion 53 and the slot 51 are provided with inclined surfaces 55 that cooperate with each other to slide when the first connecting rod 1 slides backward relative to the second connecting rod 2.

[0034] When the first connecting rod 1 slides backward relative to the second connecting rod 2, the protrusion 53 and the inclined surface 55 that slides in the slot 51 can be automatically pushed upward by the force between the inclined surfaces 55 to separate from the slot 51 and continue to move into the adjacent slot 51 at the rear. At this time, the wearer does not need to manually press the buckle 52 to separate the protrusion 53 from the slot 51. Therefore, when the wearer is about to fit the mask 4 to the face, he only needs to push the mask 4 without pressing the buckle 52, thereby reducing the difficulty of operating when adjusting the position of the mask 4 and improving the convenience of the utility model.

[0035] See also Figure 2 The outer surface of the buckle 52 is provided with anti-slip grooves 56 to reduce the probability of slipping when the finger presses on the buckle 52, and the anti-slip grooves 56 can position the finger, so that the wearer can quickly locate the position of the buckle 52 and press it.

[0036] Embodiment 1

[0037] See also Figure 5 The first connecting rod 1 is hingedly connected to the helmet body 3, and the second connecting rod 2 is hingedly connected to the mask 4.

[0038] When the wearer wants to remove the mask 4 from the face, he first presses the buckle 52 to unlock the locking mechanism 5, and then drives the second connecting rod 2 to slide forward relative to the first connecting rod 1, so that the mask 4 moves forward relative to the helmet body 3 to separate the mask 4 from the face, and then drives the mask 4 to rotate upward under the action of the hinged connection between the first connecting rod 1 and the helmet body 3, so that the mask 4 moves to the top of the helmet body 3, and finally drives the mask 4 to move downward. At this time, the second connecting rod 2 slides downward relative to the first connecting rod 1 until the inner side of the mask 4 fits against the top surface of the helmet body 3. Under the action of the fitting resistance and friction between the mask 4 and the helmet body 3, the mask 4 can be fixed to the top of the helmet body 3 to a certain extent. Therefore, the utility model can realize the function of removing the mask 4 from the wearer's face without removing the helmet body 3, thereby facilitating the wearer's use.

[0039] See also Figure 2 , Figure 6 A connecting mechanism 6 is provided between the first connecting rod 1 and the helmet body 3, and the connecting mechanism 6 includes a connector 61 and a fixing screw 62. A mounting hole 63 for inserting the connector 61 is provided on the helmet body 3, and the connector 61 and the mounting hole 63 are respectively provided with mutually clamped protrusions 64 and grooves 65. A threaded hole 66 is provided on the first connecting rod 1, and the threaded section of the fixing screw 62 passes through the connector 61 and is fixed in the threaded hole 66. A second spring 67 in a compressed state is provided between the head of the fixing screw 62 and the connector 61.

[0040] When installing the first connecting rod 1 on the helmet body 3, first insert the connector 61 into the mounting hole 63 and snap the protrusion 64 into the groove 65, so that the connector 61 does not rotate on the helmet body 3, and then insert the fixing screw 62 with the second spring 67 into the connector 61, and then close the threaded hole 66 on the first connecting rod 1 to the outer end of the connector 61 and align it with the outer end of the fixing screw 62, and finally turn the fixing screw 62 so that the threaded section of the fixing screw 62 is screwed into the threaded hole 66 for fixing, thereby realizing the installation of the first connecting rod 1. At this time, the second spring 67 is compressed, and the head of the fixing screw 62 and the connector 61 are separated by the second spring 67, so that the fixing screw 62 and the first connecting rod 1 as a whole can rotate relative to the connector 61, thereby realizing the hinged connection between the second connecting rod 2 and the helmet body 3, which is convenient for the helmet body 3 and the first connecting rod 1 to be produced separately and assembled.

[0041] Embodiment 2

[0042] See also Figure 7 The top end of the mask 4 is hingedly connected to the helmet body 3 through a connecting piece 7.

[0043] In the second embodiment, by shortening the length of the first connecting rod 1, the second connecting rod 2 can be separated from the first connecting rod 1 after pressing the buckle 52 and moving the second connecting rod 2 forward a short distance relative to the first connecting rod 1. At this time, the mask 4 can be rotated upward and flipped open under the action of the connecting piece 7 to separate from the wearer's face; when the mask 4 needs to fit to the face, the mask 4 is rotated downward along the connecting piece 7, and finally the second connecting rod 2 is inserted into the first connecting rod 1 and fixed by the locking mechanism 5, which has good convenience in operation.

[0044] The connecting member 7 adopts a damping shaft, so that the position of the mask 4 can be fixed after it is rotated upward and opened, which is convenient for the wearer to perform other operations.

[0045] Embodiment 3

[0046] See also Figure 8 The first connecting rod 1 is fixedly connected to the helmet body 3, the second connecting rod 2 is fixedly connected to the mask 4, and sealing strips 8 that abut against each other are provided at the contact positions of the helmet body 3 and the mask 4.

[0047] The full-face fire helmet has better wrapping and sealing effects, so it can provide better protection for the wearer. However, the transparent baffle on the front side of the existing full-face fire AR helmet is inseparable from the helmet body, and there is also a problem that the helmet body needs to be taken off as a whole when the breathing mask 4 is to be removed from the face. Therefore, in the third embodiment, the mask 4 is moved and fitted to the wearer's face through the relative sliding of the first connecting rod 1 and the second connecting rod 2, and at the same time, the sealing strips 8 on the mask 4 and the helmet body 3 are pressed against each other to achieve sealing. The helmet body 3 at the bottom of the mask 4 can be changed from the opening in the first or second embodiment to a form connected as a whole to achieve a better sealing effect (see Figure 8 At this time, the first connecting rod 1 and the second connecting rod 2 are fixed by a locking mechanism 5, thereby ensuring the sealing effect between the mask 4 and the helmet body 3. The first connecting rod 1 and the helmet body 3, and the second connecting rod 2 and the mask 4 are all fixedly connected to avoid the mask 4 rotating and causing poor sealing connection between the mask 4 and the helmet body 3.

[0048] When the wearer wants to remove the mask 4 from the face, he first presses the buckle 52 to unlock the locking mechanism 5, then drives the mask 4 forward and finally separates the first connecting rod 1 and the second connecting rod 2, thereby realizing the separation of the mask 4 from the helmet body 3. Therefore, this third embodiment can ensure that there is a good sealing connection between the mask 4 and the helmet body 3 while removing the helmet body 3, thereby providing a better user experience.

[0049] The above contents described in this specification are merely examples of the present utility model. Those skilled in the art of the present utility model may make various modifications or additions to the specific embodiments described, or replace them in similar ways, as long as they do not deviate from the contents of the present utility model specification or exceed the scope defined in the claims, they shall all fall within the protection scope of the present utility model.

Claims

1. A mask connection structure for a fire AR helmet, characterized in that: It includes a first connecting rod and a second connecting rod, the first connecting rod is connected to the helmet body, the second connecting rod is connected to the mask, the first connecting rod and the second connecting rod are connected to each other in a forward and backward sliding manner, and a locking mechanism for locking the relative position of the first connecting rod and the second connection is arranged in the first connecting rod and the second connecting rod, and the locking mechanism includes a slot and a buckle, and the slots are arranged in a plurality and are opened at equal intervals on the side of the first connecting rod, the buckle is rotatably arranged on the second connecting rod and is provided with a protrusion that can be inserted into the slot, and a first spring is arranged between the buckle and the second connecting rod to drive the protrusion to be inserted into the slot.

2. The mask connection structure for a firefighting AR helmet according to claim 1, characterized in that: The first connecting rods are provided with two and are symmetrically connected to the left and right sides of the helmet body relative to the helmet body. The second connecting rods are provided with two and are symmetrically connected to the left and right sides of the mask relative to the mask. The first connecting rods and the second connecting rods on the left and right sides are linearly slidably connected in a one-to-one manner.

3. The mask connection structure for a firefighting AR helmet according to claim 1, characterized in that: The protruding portion and the slot are provided with inclined surfaces which cooperate and slide with each other when the first connecting rod slides backward relative to the second connecting rod.

4. The mask connection structure for a firefighting AR helmet according to claim 1, characterized in that: The outer side of the buckle is provided with anti-slip grooves.

5. The mask connection structure for a firefighting AR helmet according to claim 1, characterized in that: The first connecting rod is hingedly connected to the helmet body, and the second connecting rod is hingedly connected to the mask.

6. The mask connection structure for a firefighting AR helmet according to claim 5, characterized in that: A connecting mechanism is arranged between the first connecting rod and the helmet body, and the connecting mechanism includes a connector and a fixing screw. A mounting hole for inserting the connector is arranged on the helmet body, and the connector and the mounting hole are respectively provided with bumps and grooves that are engaged with each other. A threaded hole is arranged on the first connecting rod, and the threaded section of the fixing screw passes through the connector and is fixed in the threaded hole. A second spring in a compressed state is arranged between the head of the fixing screw and the connector.

7. The mask connection structure for a firefighting AR helmet according to claim 1, characterized in that: The top end of the mask is hingedly connected to the helmet body through a connecting piece.

8. The mask connection structure for a firefighting AR helmet according to claim 1, characterized in that: The first connecting rod and the second connecting rod are fixedly connected to the helmet body and the mask respectively, and sealing strips that abut against each other are arranged at the contact positions of the helmet body and the mask.

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