Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a hovering type door body connecting structure of a disinfection cabinet, which can avoid the phenomenon that a door body falls off in the opening process.
The purpose of the invention is realized by the following technical scheme.
The invention discloses a hovering door body connecting structure of a disinfection cabinet, which comprises a bottom shell and a door body, wherein the hovering door body connecting structure comprises a hinge, the hinge is provided with a hinge shell, a swing arm and a swing arm rotating shaft, the hinge shell is pivoted with the swing arm through the swing arm rotating shaft, the hinge shell is fixedly connected with the door body, a swing arm connecting seat is fixedly connected in the bottom shell, the swing arm is buckled with the swing arm connecting seat, the hinge is provided with a sliding seat, one end of the sliding seat is pivoted with the swing arm through the sliding seat rotating shaft, the other end, corresponding to the sliding seat, of the sliding seat is provided with a sliding connecting rod, the hinge shell is provided with a first long hole, the sliding connecting rod is in fit sliding connection with the first long hole, the hinge shell is provided with a fixed connecting rod, the hinge is provided with a stretching, the other end corresponding to the extension spring is connected with the fixed connecting rod, the hinge is provided with a push wheel shaft, a push wheel shaft sleeve is provided with a push wheel, the sliding seat is provided with a second long hole, two ends of the push wheel shaft are respectively in adaptive sliding connection with the second long hole, the sliding seat is provided with a baffle, a compression spring used for pressing the door body on the cabinet body is arranged between the baffle and the push wheel, the swing arm is provided with a driving lug used for pushing the push wheel to compress the compression spring, and the driving lug can swing around a swing arm rotating shaft to a position between the push wheel and the sliding seat rotating shaft.
Preferably, the swing arm connecting seat is equipped with the fishplate bar, the fishplate bar is formed with the lock hole, the swing arm is formed with lower breach, the upper portion of swing arm is formed with hook portion, hook portion is connected with last spacing face, the swing arm adaptation passes the lock hole, lower breach with the lock joint of the lower limb adaptation lock joint of lock hole, it is close to go up spacing face correspondence the top edge of lock hole, hook portion pastes and leans on the back of fishplate bar.
Preferably, the swing arm connecting seat is provided with a lower plate and an upper plate, the lower plate and the upper plate are respectively connected with the upper end and the lower end of the buckling plate into a whole, the lower plate is provided with a first through hole, the upper plate is provided with a second through hole, and the first through hole and the second through hole are respectively fixedly connected with the bottom shell through screws.
Preferably, the bottom shell is formed with a positioning column, and the lower plate is formed with a positioning hole, wherein the positioning hole is connected with the positioning column in an adaptive manner.
Preferably, the hinge housing is formed with a plurality of adjusting holes for the fixed connecting rod to be inserted therein, and the adjusting holes are arranged at intervals along the extension direction of the extension spring.
Preferably, the hinge is provided with a fork rod, the fork rod comprises a fork part and a rod part, the rod part penetrates through the baffle, the compression spring is sleeved on the rod part, one end of the fork part is connected with the end part of the compression spring in an attached mode, and the other end, corresponding to the fork part, of the fork part is connected with the push wheel shaft in an attached mode.
Preferably, the door body is provided with a limiting convex frame, and the hinge shell is arranged in the limiting convex frame in a matching mode.
Compared with the prior art, the invention has the beneficial effects that: the hinge is provided with the extension spring for balancing the weight of the door body, the compression spring for pressing the door body on the cabinet body is arranged between the baffle plate and the push wheel, the swing arm is provided with the driving lug for pushing the push wheel to compress the compression spring, and the driving lug can swing around the rotating shaft of the swing arm to the position between the push wheel and the rotating shaft of the sliding seat, so that the door body is pressed on the cabinet body in a closed state, the sealing performance of the door body is good, the door body can be prevented from being opened due to misoperation, the phenomenon that the door body falls off in the opening process can be avoided, and the phenomenon that the door body falls off and falls down rapidly to damage a human body or other objects is avoided.
Drawings
Fig. 1 is a left side view structural diagram of a sterilizing cabinet having a door body connecting structure of the present invention.
Fig. 2 is a partial structural schematic diagram of fig. 1.
FIG. 3 is a left side view of the hinge and swing arm connecting seat assembly of the present invention.
Fig. 4 is a schematic perspective view of the hinge and swing arm connecting seat assembly of the present invention.
Fig. 5 is a schematic cross-sectional view of the hinge of the present invention corresponding to fig. 4.
Fig. 6 is a perspective view of the hinge of the present invention with the hinge housing hidden.
Fig. 7 is a schematic diagram of the state of the swing arm of the present invention corresponding to fig. 5 swinging to the self-locking position.
Fig. 8 is a schematic view of the swing arm of the present invention corresponding to fig. 5 swinging to a position corresponding to the open state of the door body.
Fig. 9 is a schematic view of a force analysis of an exemplary position of the door body of the present invention during opening.
Fig. 10 is a force analysis diagram of a second exemplary position of the door body of the present invention during opening.
Fig. 11 is a schematic perspective view of the swing arm connecting seat of the present invention.
Fig. 12 is a schematic top perspective view of the bottom case, the hinge and the door assembly of the present invention.
Fig. 13 is an enlarged view of fig. 12 at a.
Fig. 14 is a partially cut-away perspective view of a disinfection cabinet having a door body connecting structure according to the present invention.
Fig. 15 is a partially enlarged view of fig. 14 at B.
Fig. 16 is a schematic structural view of a second embodiment of the hinge housing of the present invention.
FIG. 17 is a schematic view of the combination of the fork arm, the compression spring, the push wheel and the push wheel shaft according to the present invention.
Description of reference numerals: 1-a bottom shell; 101-a positioning column; 2-a door body; 201-limit convex frame; 3-a hinge; 301-hinge housing; 3011-a first slot; 3012-adjusting the aperture; 302-swing arm; 3021-drive bumps; 3022-lower notch; 3023-hook; 3024-upper limiting surface; 303-a slide carriage; 3031-second slot; 304-swing arm rotating shaft; 305-a carriage spindle; 306-a push wheel; 307-fork lever; 3071-fork section; 3072-a rod part; 308-a compression spring; 309-baffle plate; 310-push wheel shaft; 311-sliding connecting rods; 312-an extension spring; 313-fixed connecting rod; 4-swing arm connecting base; 41-lower plate; 411 — first via; 412-positioning holes; 42-upper plate; 421-avoiding hole; 422-a second via; 43-a fastening plate; 431-a lock-out hole; 4301-lower edge; 4302-upper edge; and 5-a cabinet body.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The door body connecting structure of the invention, as shown in fig. 1 and 12, comprises a bottom shell 1 and a door body 2, wherein the bottom shell 1 is arranged at the lower part of the disinfection cabinet, and the door body 2 is used for sealing a cavity for placing dishes of the disinfection cabinet.
As shown in fig. 1 to 4 and 12 to 15, the hinge comprises a hinge 3, as shown in fig. 4 to 6, the hinge 3 is provided with a hinge housing 301, a swing arm 302 and a swing arm rotating shaft 304, the hinge housing 301 and the swing arm 302 are pivoted by the swing arm rotating shaft 304, as shown in fig. 2, the hinge housing 301 and the door body 2 are fixedly connected by screws, a swing arm connecting base 4 is fixedly connected in the bottom shell 1, the swing arm 302 is fastened with the swing arm connecting base 4, as shown in fig. 4 to 6, the hinge 3 is provided with a sliding base 303, as shown in fig. 6, the sliding base 303 is configured to be groove-shaped, the sliding base 303 is disposed in the hinge housing 301, one end of the sliding base 303 is pivoted with the swing arm 302 by the sliding base rotating shaft 305, the other end corresponding to the sliding base 303 is provided with a sliding connecting rod 311, specifically, the sliding connecting rod 311 is adapted to pass through the sliding base 303, as shown in fig, that is, both end portions of the slide link 311 are fitted into the first long hole 3011, so that the end portion of the slide link 311 can slide in the first long hole 3011. As shown in fig. 4 to 6, the hinge housing 301 is provided with a fixed connection rod 313, the fixed connection rod 313 can be adapted to pass through the hinge housing 301, the hinge 3 is provided with an extension spring 312 for balancing the weight of the door body 2, one end of the extension spring 312 is connected with the sliding connection rod 311, and the other end of the extension spring 312 corresponding to the fixed connection rod 313, specifically, as shown in fig. 6, two ends of the extension spring 312 are respectively formed with a hook-shaped structure, and two ends of the extension spring 312 are respectively hooked on the sliding connection rod 311 and the fixed connection rod 313. As shown in fig. 5 and 6, the hinge 3 is provided with a push wheel shaft 310, the push wheel shaft 310 is sleeved with a push wheel 306, the push wheel 306 can rotate relative to the push wheel shaft 310, the sliding seat 303 is formed with a second long hole 3031, and two ends of the push wheel shaft 310 are respectively in sliding connection with the second long hole 3031. The slide base 303 is bent inward to form a baffle 309, and a compression spring 308 for pressing the door body 2 against the cabinet 5 is provided between the baffle 309 and the push wheel 306. As shown in fig. 7, the swing arm 302 is formed with a driving lug 3021 for pushing the push wheel 306 to compress the compression spring 308, and the driving lug 3021 can swing around the swing arm rotating shaft 304 to a position between the push wheel 306 and the slide rotating shaft 305, in other words, as shown by the dotted line in fig. 7, the contact point of the driving lug 3021 and the push wheel 306, the center of the push wheel 306 and the center of the slide rotating shaft 305 are all on the same straight line.
The working principle of the door body connecting structure of the present invention is briefly explained as follows: the configuration of the hinge 3 in fig. 3 and 5 corresponds to the door closing state of the door 2, in this state, the door 2 is in close contact with the edge of the cabinet 5, as shown in fig. 5, the compression spring 308 is in the compressed state at this time, so the push wheel 306 applies a reaction force to the driving lug 3021, since the push wheel 306 is located on the left side of the driving lug 3021 in the view of fig. 5 at this time, the swing arm 302 receives a clockwise moment in the view of fig. 5, so that the door 2 is pressed on the cabinet 5, the sealing performance of the door 2 is better, and the door 2 can be prevented from being opened due to misoperation. When the door body 2 needs to be opened, the door body 2 is pulled by hand, as shown in fig. 7, the swing arm 302 swings counterclockwise relatively, in the process, the driving lug 3021 pushes the push wheel 306 open by the force of the hand, the compression spring 308 is further compressed, so that the push wheel 306 moves to the position shown in fig. 7 relatively, as described above, in this state, the contact point of the driving lug 3021 with the push wheel 306, the center of the push wheel 306 and the center of the slide seat rotating shaft 305 are all on the same straight line, so after the hand is released, because the thrust direction of the compression spring 308 passes through the center of the slide seat rotating shaft 305, the force arm of the compression spring 308 to the slide seat rotating shaft 305 is approximately zero, in the state of fig. 7, the thrust of the compression spring 308 generates a torque to the swing arm 302 around the swing arm rotating shaft 304 to counteract the torque to the swing arm 302 around the swing arm rotating shaft 304, and the thrust of the compression spring 308 instead makes the swing arm 302 press on the slide seat, in the state of fig. 7, since the swing arm rotating shaft 304 drives the sliding base 303 to move downwards, the extension spring 312 generates an upward pulling force on the sliding base 303, and this pulling force, in combination with the downward pushing force of the compression spring 308, increases the indirect static friction between the swing arm 302 and the sliding base 303 and between the swing arm 302 and the hinge housing 301, so that in the state of fig. 7, the swing arm 302 and the hinge housing 301 form a relative self-locking state, i.e. the swing arm 302 and the hinge housing 301 are relatively stationary, and in this state, because the force arm of the gravity of the door body 2 to the swing arm rotating shaft 304 is relatively short, the gravity action of the door body 2 is not enough to break the self-locking state, and the door body 2 can hover at a position corresponding to the relative angle between the swing arm 302 and the hinge housing 301 of fig.. When the door body 2 is opened by hand, the driving protrusion 3021 crosses the push wheel 306 by hand force, so that the self-locking state is released, and during the downward-turning opening process of the door body 2, as shown in fig. 9, "M" in fig. 9 represents the center of gravity of the door body 2, "Q" in fig. 9 represents the swing arm rotating shaft 304, "T" in fig. 9 represents the resultant moment resisting the downward-turning swing of the door body 2, "G" in fig. 9 represents the gravity of the door body 2, and "X" in fig. 9 represents the moment arm of the gravity of the door body 2 to the swing arm rotating shaft 304, as seen in comparison between fig. 9 and fig. 10, when the door body 2 is turned downward gradually, the moment arm X also increases gradually, the moment of the gravity G of the door body 2 to the swing arm rotating shaft 304 increases gradually, as shown in fig. 7 and fig. 8, correspondingly, during the swinging process of the swing arm 302 relative to the hinge housing 301, the swing arm 302 drives the sliding base 303 to move through the sliding base, since the tension of the tension spring 312 is proportional to the tension length, the moment applied to the swing arm 302 by the tension spring 312 gradually increases, and the indirect frictional force between the swing arm 302 and the hinge housing 301 and between the swing arm 302 and the slider 303 is also gradually increased accordingly, the resultant torque of the moment generated by the friction force on the swing arm rotating shaft 304 and the moment generated by the extension spring 312 on the swing arm rotating shaft 304 is approximately the resultant torque T resisting the downward-turning swing of the door body 2, when the specification of the extension spring 312 is set to match the weight of the door body 2, the door body 2 can suspend or turn down slowly in the range of the swing angle between the state of fig. 7 corresponding to the swing arm 302 and the state of fig. 8, so that the sterilizing cabinet with the door body connecting structure of the present invention has a better use effect, therefore, the phenomenon that the door body 2 falls off in the opening process is avoided, and the door body 2 is prevented from colliding with human bodies or other objects due to rapid falling, falling and overturning. When the door body 2 needs to be closed, the door body 2 only needs to be lifted slightly by hand, the swing arm 302 swings back to the position in fig. 7, then the hand slightly increases the force for closing the door body 2, so that the driving lug 3021 pushes the push wheel 306 and goes over the push wheel 306, when the driving lug 3021 just swings back to depart from the self-locking position shown in fig. 7, because the force arm of the pushing force of the compression spring 308 to the slide seat rotating shaft 305 is increased, then the compression spring 308 generates the moment for swinging back and resetting to the swing arm 302, so that the door body 2 is closed by itself and attached to the cabinet body 5 through the compression spring 308, and the extension spring 312 also plays a role in assisting in closing the door body 2 in the process.
Further, as shown in fig. 4 and 11, the swing arm connecting base 4 is provided with a latch plate 43, the latch plate 43 is formed with a latch hole 431, as shown in fig. 5, the swing arm 302 is formed with a lower notch 3022, the upper portion of the swing arm 302 is formed with a hook portion 3023, the hook portion 3023 is connected with an upper limit surface 3024, the upper limit surface 3024 corresponds to the lower notch 3022, as shown in fig. 3, the swing arm 302 is fitted through the latch hole 431, the lower notch 3022 is fitted and latched with the lower edge 4301 of the latch hole 431, the upper limit surface 3024 corresponds to the upper edge 4302 close to the latch hole 431, the hook portion 3023 abuts against the back surface of the latch plate 43, as seen from fig. 3, the hook portion 3023 abuts against the left side surface of the latch plate 43, and in the closed state of the door body 2, since the door body 2 is pressed against the cabinet body 5 by the thrust force of the compression spring 308, the hook portion 3023 can abut. When the swing arm 302 is installed in the fastening hole 431, the swing arm 302 needs to pass through the fastening hole 431 obliquely, then the lower notch 3022 is inserted into the lower edge 4301 of the fastening hole 431, and then the swing arm 302 swings clockwise to press the upper limiting surface 3024 into the position of the upper edge 4302 of the fastening hole 431.
Further, as shown in fig. 11, the swing arm connecting base 4 is provided with a lower plate 41 and an upper plate 42, the lower plate 41 and the upper plate 42 are respectively connected with the upper end and the lower end of the fastening plate 43 into a whole, in other words, the swing arm connecting base 4 can be formed by bending a steel plate, the lower plate 41 is formed with a first through hole 411, the upper plate 42 is formed with a second through hole 422, as shown in fig. 12 to 15, the first through hole 411 and the second through hole 422 are respectively fixedly connected with the bottom case 1 through screws (it should be noted that the screws are not shown in each figure), in other words, the screws respectively pass through the first through hole 411 and the second through hole 422 and are then screwed with the bottom case 1, the bottom case 1 is formed with a convex pillar at a position corresponding to the first through hole 411 and the second through hole 422, and the upper end of the convex. The swing arm connecting seat 4 has high structural strength and is firmly connected with the bottom shell 1. As shown in fig. 11, the swing arm link base 4 is formed with a relief hole 421, and as shown in fig. 3, the relief hole 421 is used to relieve the hook portion 3023 when the swing arm 302 is fitted into the hooking hole 431.
Further, as shown in fig. 15, the bottom case 1 is formed with a positioning post 101, as shown in fig. 11, the lower plate 41 is formed with a positioning hole 412, and the positioning hole 412 is connected with the positioning post 101, so that the swing arm connecting seat 4 can be positioned quickly when being assembled on the bottom case 1, and the swing arm connecting seat 4 can be fixed reliably after being assembled. The lower plate 41 may be formed with two positioning holes 412.
In some embodiments, as shown in fig. 16, the hinge housing 301 is formed with a plurality of adjustment holes 3012 for the fixed connection bar 313 to be fitted in, the adjustment holes 3012 being arranged at intervals along the expansion and contraction direction of the extension spring 312. As can be seen from fig. 4 and 5, the extension spring 312 is hooked on the fixed connection rod 313, as shown in fig. 16, when the fixed connection rod 313 is installed in the adjustment hole 3012 at a relatively lower position, the pretension length of the extension spring 312 is smaller, so that the balance force applied to the door body 2 during the opening process is smaller, in other words, by providing the adjustment holes 3012 arranged at intervals, the hinge 3 can be replaced by the extension springs 312 with different length specifications according to the specific weight of the door body 2, and then the fixed connection rod 313 is tested and installed in different adjustment holes 3012, so that the extension spring 312 can be conveniently adapted to the weight of the door body 2, and the door body 2 of the disinfection cabinet product delivered to the customer can be suspended or turned down slowly.
Further, as shown in fig. 5 and 6, the hinge 3 is provided with a fork 307, as shown in fig. 17, the fork 307 includes a fork portion 3071 and a rod portion 3072, as shown in fig. 5 and 6, the rod portion 3072 penetrates the baffle 309, as shown in fig. 17, the compression spring 308 is sleeved on the rod portion 3072, one end of the fork portion 3071 is in abutting connection with an end portion of the compression spring 308, and the other corresponding end of the fork portion 3071 is in abutting connection with the pushing wheel shaft 310. The fork rod 307 is beneficial to positioning the compression spring 308, the other end corresponding to the fork portion 3071 is attached to the push wheel shaft 310, the structure is reasonable, and when the driving lug 3021 pushes the push wheel 306, the push wheel shaft 310 can drive the fork portion 3071 to compress the compression spring 308.
Further, as shown in fig. 13 and 15, the door body 2 is formed with a limiting convex frame 201, and the limiting convex frame 201 can be understood as a three-sided wall, and the hinge housing 301 is adapted to be disposed in the limiting convex frame 201. This is advantageous in that the hinge housing 301 can be quickly and accurately positioned during assembly, and also in that the hinge housing 301 can be prevented from shifting during use.