CN216991717U - Upper and lower frame assembling equipment for air respirator mask - Google Patents

Abstract

The utility model relates to an upper frame and a lower frame assembly device of a mask of an air respirator, which comprises a rack (1), a pressure head (2), a supporting seat (100) and a driving mechanism, wherein the pressure head (2) is provided with an upper groove with a downward notch, and the upper groove is used for pressing an upper frame (6) of the mask; the support base (100) is provided with an avoidance space (102) and lower grooves, the avoidance space (102) is used for the convex part at the lower part of the mask body (3) of the mask to enter, the lower grooves are used for supporting the lower frame (7) of the mask, and the lower grooves comprise left and right lower grooves which are symmetrically distributed at the two sides of the avoidance space (102); the positions of the left lower groove and the right lower groove and the positions of the upper grooves are distributed in an isosceles triangle shape; the driving mechanism is used for driving the pressure head (2) to move downwards so as to press the upper frame and the lower frame which are buckled on the mask body (3) relatively. The utility model improves the assembly efficiency, reduces the labor intensity and ensures the operation safety.

Description

Upper and lower frame assembling equipment for mask of air respirator

Technical Field

The present invention relates to tools for servicing air respirator hoods, and in particular to an assembly apparatus for assembling the upper and lower frames of an air respirator hood.

Background

The face mask of the air respirator is a device directly matched with the face of a wearer (the structure can refer to the introduction of patent document CN 203196162U), as shown in figure 1, the face mask mainly comprises a face mask body 3, a mirror 4, an oronasal mask assembly 5, an upper frame 6 and a lower frame 7, a viewing window hole is arranged at the front end of the face mask body 3 and is used for being matched with the transparent mirror 4, and a convex part 31 which is used as an oronasal mask connecting part and is used for installing the oronasal mask assembly 5 is arranged at the lower end of the face mask body 3. In order to improve the adhesion and the sealing performance with the human face, the mask body 3 is made of soft rubber material, and the mirror 4 is made of hard plastic material, so the mirror 4 and the mask body 3 are two parts which are separated, and in order to ensure the sealing of the joint of the mirror and the mask body after assembly, the upper frame and the lower frame are required to press the sealing rubber strip which is arranged on the mask body and is used for matching with the mirror, and are fastened together by bolts, so that the upper frame and the lower frame form a 'hoop' which is hooped on the outer edge of the sealing rubber strip. Meanwhile, since the shape of the human face is flat at the upper part (forehead eye part) and uneven at the lower part (mouth and nose), the shapes of the upper frame and the lower frame are irregular and not symmetrical up and down, and can be roughly considered as two half-rings, specifically as shown in fig. 1, the upper frame 6 comprises a top frame 61, an upper left frame 62 connected to the left side of the top frame 61, and an upper right frame 62 connected to the right side of the top frame 61, the lower frame 7 comprises an arc-shaped bottom frame 71, a lower left frame 72, and a lower right frame 73, the left side of the arc-shaped bottom frame 71 is connected with the lower left frame 72 through a left arc-shaped corner 74, the right side of the arc-shaped bottom frame 71 is connected with the lower right frame 73 through a right arc-shaped corner 75, the upper left frame 62 and the lower left frame 72 are provided with left connecting lugs 8 correspondingly, the upper right frame 63 and the lower right frame 73 are provided with right connecting lugs 9 correspondingly, and the left connecting lugs 8 and the right connecting lugs 9 are used for mounting bolts, to fasten the upper and lower frames together to form a band that grips the outer edge of the bead of sealant.

In the maintenance process of the mask of the air respirator, the mask needs to be disassembled so as to separate the mask body, the face mirror, the oronasal mask assembly, the upper frame, the lower frame and other parts, and after the parts are cleaned and maintained, the parts are manually assembled. When the upper frame and the lower frame are assembled on the mask body on which the mirror is installed, the upper frame and the lower frame are respectively embedded into the outer edges of the sealing rubber strips supported by the edges of the mirror, then the upper frame and the lower frame are pressed together by force, and then the bolts are tightened. However, as described above, the upper and lower frames have irregular semi-circular shapes, and in order to maintain a specific shape, the hardness of the upper and lower frames is large, it is difficult to reduce the gap between the upper and lower frames to a point where they can be butted against each other only by both hands, and it is difficult to uniformly apply force to each part of the upper and lower frames during pressing because the shapes of the upper and lower frames are asymmetric. Therefore, the multiple pressing is time-consuming and labor-consuming, and in the pressing process, due to the fact that the lower portion of the mask body is provided with the protruding portion (the protruding portion is used for connecting components such as a connecting portion of the oronasal mask) and the appropriate force application point is difficult to find for applying force during each pressing, the lower frame or the mask body is prone to being damaged due to the fact that the lower frame or the mask body is abutted to the lower frame through a hard object, or an operator is prone to being injured due to the fact that the lower frame or the mask body is too hard to apply force.

In summary, the assembly operation of the upper frame and the lower frame of the air respirator mask has the defects of time and labor waste and large potential safety hazard, which directly affect the cost of maintenance of the air respirator mask, and a scheme capable of better solving the problems does not exist in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide the assembling equipment for the upper frame and the lower frame of the mask of the air respirator, which is safe and convenient to operate and high in assembling efficiency.

The utility model relates to an upper frame and lower frame assembling device for a mask of an air respirator, which comprises a rack, a pressure head, a supporting seat and a driving mechanism, wherein the pressure head and the supporting seat are arranged at an interval up and down so as to leave an assembling space for installing the upper frame and the lower frame of the mask and a mask body between the supporting seat and the pressure head; the pressure head is assembled on the frame in a guiding and moving way along the up-down direction, the pressure head is provided with an upper groove with a downward notch, the upper groove is used for pressing down the upper frame of the face mask, and the upper groove respectively extends towards the left end and the right end from the center in a bending way, so that the upper groove can be matched with the top frame part of the upper frame of the face mask in a matching way; the support base is provided with an avoidance space and a lower groove, the avoidance space is used for allowing a convex part at the lower part of a mask body of the mask to enter, the lower groove is used for supporting a lower frame of the mask, the lower groove comprises a left lower groove and a right lower groove which are symmetrically distributed at two sides of the avoidance space, the left lower groove and the right lower groove are respectively bent and extended upwards from the center to the front end and the back end, and the left lower groove and the right lower groove are gradually drawn together from back to front so that the left lower groove and the right lower groove can be respectively matched with the left bending corner part and the right bending corner part of the lower frame of the mask in a matching way; the positions of the left lower groove and the right lower groove and the positions of the upper grooves are distributed in an isosceles triangle shape; the driving mechanism is used for driving the driving head to move downwards so as to press the upper frame and the lower frame which are buckled on the mask body relatively.

The utility model has the beneficial effects that: the lower frame of the face mask can enter the lower grooves of the supporting seat, and the left lower groove and the right lower groove have specific extension directions and shapes and are respectively matched with the left bending corner part and the right bending corner part of the lower frame in a matching way, so that a left fulcrum and a right fulcrum are provided for the lower frame, the left fulcrum and the right fulcrum are symmetrically distributed on two sides of the arc-shaped bottom frame in the middle of the lower frame, and an avoidance space between the left groove and the right groove can enter a convex part at the lower part of the face mask body, so that the left lower groove and the right lower groove are equivalent to clamping the middle part of the lower frame from two sides, uniform supporting force can be uniformly provided for the lower frame, the lower frame is reliably fixed and is not easy to shift left and right, the position of the lower frame can be kept unchanged when the lower frame is pressed, and the supporting point of the lower frame is not required to be manually found in the prior art; meanwhile, the top frame part of the upper frame of the face mask can enter the upper groove of the pressure head, the upper groove is bent and extended in a specific direction, so that the upper frame is positioned by the pressure head, the upper frame is accurately pressed to the lower frame under the action of the pressure head, the positions of the left lower groove and the right lower groove and the position of the upper groove are distributed in an isosceles triangle shape, the three parts exert opposite acting forces on the upper frame and the lower frame while carrying out three-point support on the face mask, and until the gap between the upper frame and the lower frame is reduced and tightly attached, so that the whole assembling process is safe and efficient. Therefore, the utility model improves the assembly efficiency, reduces the labor intensity and ensures the operation safety.

Furthermore, the supporting seat comprises two brackets fixed on the frame, the two brackets are respectively a left bracket and a right bracket, the left bracket and the right bracket are arranged at left and right intervals to leave the avoiding space, and the left lower groove and the right lower groove are respectively arranged on the left bracket and the right bracket. The left bracket and the right bracket which are parallel are arranged, so that an avoidance space is easier to reserve, the stress is more dispersed and does not interfere with each other, and the two supporting points of the lower frame of the mask are favorably supported.

Furthermore, the bracket comprises a support and an arc-shaped groove, the concave part of the arc-shaped groove forms the left lower groove or the right lower groove, and the bottom of the arc-shaped groove is fixed with the rack through the support. The common arc-shaped groove is used as a stress component, can be matched with the corresponding part of the lower frame in a matching way, and is easy to process so as to reduce the cost.

Further, the left lower groove extends obliquely from left back to right front in the horizontal direction and is curved from top to bottom and then extends upward, and the right lower groove extends obliquely from right back to left front in the horizontal direction and is curved from top to bottom and then extends upward.

Further, the pressure head includes transmission shaft, splice bar and curved groove, and the transmission shaft is followed the direction of upper and lower direction and is removed the assembly in the frame, and the concave part in curved groove forms the upper groove, the upper groove is bent after the right forward again after by left on the horizontal direction, the transmission shaft passes through splice bar and curved groove top fixed connection.

Furthermore, the frame includes the base, fixes stand on the base, fixes the crossbeam on the stand, has seted up the transmission shaft hole on the crossbeam, the transmission shaft is worn to adorn in the transmission shaft hole, and the transmission shaft hole is used for guiding the transmission shaft to reciprocate. The transmission shaft is installed in a mode that the stand column is combined with the cross beam, so that the structure is stable, and force application operation is facilitated.

Furthermore, a guide sleeve is fixed on the cross beam, a vertical guide groove is formed in the guide sleeve, a guide key is fixed on the transmission shaft, and the guide key is used for being in guide fit with the guide groove to prevent the transmission shaft from rotating. Thus, the pressure head can not rotate at will, so that the pressure head can apply force to the top frame part of the upper frame more accurately without colliding with other parts of the mask

Furthermore, actuating mechanism is including articulating the handle on stand top, and the handle can the swing of every single move from top to bottom, and the handle bottom is equipped with top pressing portion, and top pressing portion is used for roof pressure transmission shaft downwards. The handle is hinged on the upright post, and the driving mechanism formed by the handle is a labor-saving lever mechanism, so that the force application operation is easier.

Furthermore, the bottom of the handle is provided with a transmission plate, the top pressing part is arranged on the bottom surface of the transmission plate, and the transmission plate is used for increasing the contact area between the handle and the top end of the transmission shaft. The driving plate can increase the contact area between the handle and the top end of the transmission shaft.

Furthermore, the transmission shaft is sleeved with a return spring, the return spring is supported between the cross beam and the transmission shaft, and the return spring is used for upwards pushing the transmission shaft. The pressure head can be automatically lifted by utilizing the rebound force of the return spring, so that the fastened mask can be conveniently taken out and put into the mask to be pressed.

Drawings

FIG. 1 is an exploded schematic view of the major components of an air respirator facepiece;

FIG. 2 is a schematic structural diagram of an embodiment of the present invention;

FIG. 3 is a schematic view of the arrangement of FIG. 2 with the ram removed;

FIG. 4 is a schematic diagram of the construction of the indenter of FIG. 2;

FIG. 5 is a schematic view of a use state of an embodiment of the present invention;

in the figure:

1. a frame; 100. a supporting base; 101. a base; 102. avoiding a space; 104. a column; 105. a support; 106. an arc-shaped slot; 107. hinging a shaft; 108. an ear plate; 109. a handle; 110. a handle cover; 111. a drive plate; 112. a cross beam; 113. a transmission shaft hole; 114. a guide sleeve; 2. a pressure head; 201. a cotter pin; 202. a gasket; 203. a return spring; 205. a drive shaft; 206. a guide key; 207. connecting ribs; 208. a curved groove; 3. a mask body; 31. a protruding portion; 4. an eyepiece; 5. an oronasal mask assembly; 6. an upper frame; 61. a top frame; 62. a left upper frame; 63. a lower left border; 7. a lower frame; 71. an arc-shaped bottom frame; 72. a lower left border; 73. a lower right frame; 74. a left curved corner; 75. a right curved corner; 8. a left engaging lug; 9. and a right connecting lug.

Detailed Description

An embodiment of the present invention, as shown in fig. 2-5, includes a frame 1, a pressing head 2, a supporting base 100, and a driving mechanism, wherein the pressing head 2 and the supporting base 100 are arranged at an interval from top to bottom, and an assembly space for installing an upper frame 6, a lower frame 7, and a mask body 3 of a mask is formed therebetween. The frame 1 comprises a base 101, a vertical column 104 fixed on the base 101, and a beam 112 fixed on the vertical column 104, wherein a transmission shaft hole 113 is arranged on the beam 112.

The pressure head 2 comprises a transmission shaft 205, a connecting rib 207 and a curved groove 208, the transmission shaft 205 is assembled in the transmission shaft hole 113 of the machine frame 1 along the up-down direction in a guiding and moving mode, so that the pressure head 2 is assembled on the machine frame 1 along the up-down direction in a guiding and moving mode, and the transmission shaft 205 is fixedly connected with the top of the curved groove 208 through the connecting rib 207.

The recessed portion of the curved groove 208 forms an upper groove for the indenter 2 to have an upper groove with a downward notch for fitting the upper frame 6 of the mask, the upper groove extending in a horizontal direction from left to right and then back to right (in the following: referring to fig. 2, the left-right direction is the x-axis direction, the arrow indicates right, the front-back direction is the y-axis direction, the arrow indicates front, the up-down direction is the y-axis direction, the arrow indicates up, and down), so that the upper groove can fit the top frame 61 portion of the upper frame 6 of the mask (referring to the reference numeral of fig. 1 for the top frame 61 portion of the upper frame 6).

Be fixed with uide bushing 114 on the crossbeam 112, seted up vertical guide way on the uide bushing 114, be fixed with guide key 206 on the transmission shaft 205, guide key 206 is used for cooperating with the guide way direction to prevent that transmission shaft 205 is rotatory, make pressure head 2 can not rotate at will, make pressure head 2 can be more accurate to the top frame 61 application of force of upper ledge 6, and can not collide other parts of face guard.

The transmission shaft 205 is sleeved with a return spring 203, the transmission shaft 205 is also sleeved with a gasket 202, the upper end of the gasket 202 is blocked by an open pin 201, the return spring 203 is supported between the cross beam 112 and the gasket at the top end of the transmission shaft 205, and the pressure head 2 is lifted by the resilience force of the return spring 203, so that the fastened face mask can be conveniently taken out and put into the face mask to be pressed.

The support seat 100 comprises two brackets fixed on the frame 1, the two brackets are respectively a left bracket and a right bracket, the left bracket and the right bracket are arranged at left and right intervals to leave an avoidance space 102, the avoidance space 102 is used for allowing a protruding part 31 (according to the protruding part 31 at the lower part of the mask body 3, the protruding part is an oronasal mask connecting part and is used for installing an oronasal mask component 5, and the marks in the figure 1) at the lower part of the mask body 3 to enter, and the positions of the left bracket and the right bracket and the position of the pressure head 2 are distributed in an isosceles triangle shape. Every bracket all includes support 105 and arc wall 106, the bottom of arc wall 106 is fixed with frame 1 through support 105, the sunken part of arc wall 106 forms the low groove, the low groove on two brackets is just respectively left low groove, right low groove, because a left side, right low groove sets up respectively on a left side, right bracket, so a left side, right low groove distributes in dodging space 102 both sides, a left side, the position at right low groove place and the position at upper groove place on the pressure head 2 also are isosceles triangle and distribute. The lower grooves are used for supporting the lower frame 7 of the face mask, the left lower groove extends obliquely from left back to right front in the horizontal direction and is bent and extended from top to bottom and then to top, and the right lower groove extends obliquely from right back to left front in the horizontal direction and is bent and extended from top to bottom and then to top, so that the left lower groove and the right lower groove can be matched with a left bent corner 74 and a right bent corner 75 (according to the left bent corner and the right bent corner, see marks 74 and 75 in figure 1) of the lower frame 7 of the face mask respectively in a matching way.

The driving mechanism is a labor-saving lever mechanism and is used for driving the pressure head 2 to move downwards so as to press the upper frame 6 and the lower frame 7 which are buckled on the mask body 3 relatively. The driving mechanism comprises a handle 109 hinged to the top end of the upright column 104, an ear plate 108 is arranged at the upper end of the upright column 104, the front end of the handle 109 is hinged to the ear plate 108 through a hinge shaft 107, a handle sleeve 110 is sleeved at the rear end of the handle 109, a transmission plate 111 is fixed at the bottom of the handle 109, a jacking portion is formed on the bottom surface of the transmission plate 111 and used for jacking the transmission shaft 205 downwards, and the transmission plate 111 can increase the contact area between the handle 109 and the top end of the transmission shaft 205.

When the mask is used, the upper frame 6 and the lower frame 7 of the mask to be pressed are respectively arranged in the upper groove of the pressure head 2 and the lower groove of the supporting seat 100, the handle 109 is pressed downwards, the driving plate 111 transmits force to the pressure head 2, the upper groove is tightly attached to the upper frame 6 of the mask, and the gap between the upper frame and the lower frame of the mask is reduced until the upper frame and the lower frame are tightly attached along with the increase of the force.

In addition, in other embodiments of the present invention, the supporting base 100 may be a single boss, the upper surface of the boss is provided with a sink groove as an avoidance space, and the left and right lower grooves are distributed on the upper surface of the boss at two sides of the sink groove. Of course, the lower groove may be a single groove formed on the upper surface of one of the support bases 100, and the left and right lower grooves may be portions of left and right sides of the single groove.

In other embodiments of the present invention, the driving mechanism may be replaced by other conventional linear driving mechanisms, such as a hydraulic cylinder, an electric push rod, etc.

Claims (10)

1. The upper frame and the lower frame assembly equipment for the mask of the air respirator is characterized by comprising a rack (1), a pressure head (2), a supporting seat (100) and a driving mechanism, wherein the pressure head (2) and the supporting seat (100) are arranged at an interval up and down so as to reserve an assembly space for installing the upper frame and the lower frame of the mask and a mask body (3) between the supporting seat (100) and the pressure head (2); the pressure head (2) is assembled on the rack (1) in a guiding and moving way along the up-down direction, the pressure head (2) is provided with an upper groove with a downward notch, the upper groove is used for pressing down an upper frame (6) of the mask, and the upper groove respectively extends towards the left end and the right end in a backward bending way from the center so as to enable the upper groove to be matched with a top frame (61) part of the upper frame (6) of the mask in a matching way; the support base (100) is provided with an avoidance space (102) and lower grooves, the avoidance space (102) is used for a convex part at the lower part of a mask body (3) of the mask to enter, the lower grooves are used for supporting a lower frame (7) of the mask, the lower grooves comprise left and right lower grooves which are symmetrically distributed at the two sides of the avoidance space (102) from left to right, the left and right lower grooves are respectively bent and extended upwards from the center towards the front and rear ends, and the left and right lower grooves are gradually drawn close from back to front so that the left and right lower grooves can be respectively matched with the left and right bending corner parts of the lower frame (7) of the mask in a matching way; the positions of the left lower groove and the right lower groove and the positions of the upper grooves are distributed in an isosceles triangle shape; the driving mechanism is used for driving the pressure head (2) to move downwards so as to press the upper frame and the lower frame which are buckled on the mask body (3) relatively.

2. An upper and lower frame assembly apparatus for an air respirator mask according to claim 1, wherein the support base (100) comprises two brackets fixed to the frame (1), the two brackets being a left bracket and a right bracket, respectively, the left and right brackets being spaced apart from each other to leave the escape space (102), and the left and right lower grooves being provided on the left and right brackets, respectively.

3. The air respirator mask upper and lower frame assembly apparatus of claim 2, wherein the bracket comprises a bracket (105) and an arcuate slot (106), the concave portion of the arcuate slot (106) forming the left or right lower slot, the bottom of the arcuate slot (106) being secured to the frame (1) by the bracket (105).

4. The air respirator mask upper and lower frame assembly apparatus of claim 2, wherein the left lower groove extends obliquely from left rear to right front and curves upwardly from top to bottom, and the right lower groove extends obliquely from right rear to left front and curves upwardly from top to bottom in the horizontal direction.

5. The upper and lower frame assembly apparatus of air respirator mask according to claim 1, wherein said pressure head (2) comprises a drive shaft (205), a connecting rib (207) and a curved groove (208), wherein the drive shaft (205) is assembled on the frame (1) in a way of guiding and moving along the up and down direction, the concave part of the curved groove (208) forms said upper groove, the upper groove extends from left back to front and then bends to right back in the horizontal direction, and the drive shaft (205) is fixedly connected with the top of the curved groove (208) through the connecting rib (207).

6. The upper and lower frame assembly equipment of air respirator mask according to claim 5, wherein said frame (1) comprises a base (101), a vertical column (104) fixed on the base, and a cross beam (112) fixed on the vertical column (104), wherein the cross beam (112) is provided with a transmission shaft hole (113), said transmission shaft (205) is inserted into the transmission shaft hole (113), and the transmission shaft hole (113) is used for guiding the transmission shaft (205) to move up and down.

7. The upper and lower frame assembly equipment of air respirator facepiece according to claim 6, wherein the cross beam (112) is fixed with a guide sleeve (114), the guide sleeve (114) is provided with a vertical guide slot, the transmission shaft (205) is fixed with a guide key (206), and the guide key (206) is used for guiding and matching with the guide slot to prevent the transmission shaft (205) from rotating.

8. The upper and lower frame assembly apparatus of claim 6, wherein the driving mechanism comprises a handle (109) hinged to the top end of the upright (104), the handle (109) being capable of tilting up and down, and a pressing portion provided at the bottom of the handle (109) for pressing the shaft (205) downward.

9. An air respirator mask upper and lower frame assembly apparatus according to claim 8, wherein the bottom of the handle (109) is provided with a driving plate (111), the jacking portion is provided on the bottom surface of the driving plate (111), and the driving plate (111) is used for increasing the contact area of the handle (109) and the top end of the driving shaft (205).

10. Upper and lower frame assembly apparatus for air respirator hoods according to claim 8, wherein the transmission shaft (205) is sleeved with a return spring (203), the return spring (203) is supported between the cross member (112) and the transmission shaft (205), and the return spring (203) is used to push the transmission shaft (205) upwards.

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