Summary of the invention
Therefore, the objective of the invention is to obtain the deep freezer of reliable switch motion in order to provide a kind of simple structure also can suppress the impact at closing time of switch door less.
Be provided with in order to reach aforementioned purpose, to the invention is characterized in: on refrigerator main body, be the switch door that fulcrum carries out switch with the hinge; Switch door drawn-back device independently, it engages at closing time at the switch door, keeps being fastened on full cut-off and draws in the switch door by spring force before finishing and become full-shut position; The impact bearing device of the impact when when switch door full cut-off, bearing full cut-off; Switch door ejecting device, it is by the open operation of operating portion, the switch door when the direction of opening the door is released full cut-off.
The invention effect
According to the present invention, forcibly switch door is at closing time drawn in full close position by switch door drawn-back device, can access reliable full-shut position.As the simple construction of drawing in by spring force, independence constitutes and need not use bindiny mechanism in addition, so switch door drawn-back device can simple structure.
In addition, the switch door during full cut-off by make switch door ejecting device action can be simply, easily open the door, playing the brisk and easy realization of action of opening the door from the full cut-off action.
In the present invention, first, from the arranged in order of aforementioned hinge side according to impact bearing device, switch door drawn-back device, switch door ejecting device, and form following unit structure: on the base plate part of installing on the refrigerator main body, assemble impact bearing device and switch door drawn-back device at least, thus, be installed to easily on the refrigerator main body on the one hand, reduce number of components simultaneously and attempt to lower the component management personnel amount.
Second, on the one hand, aforementioned impact bearing device is configured in apart from the nearest approximated position of mentioned hinge, and it is by the cylinder body that is provided with on aforementioned refrigerator main body and outstanding and impacting position of readiness advancing by the application of force always from cylinder body, the damper rod that retreats constitutes, when on the aforementioned switches door, being provided with switch and the damper rod front end face of aforementioned impact position of readiness carry out the damping bearing surface of face butt, even near hinge, also the interference stroke of damper rod can be diminished, simultaneously, with switch door butt the time, by carrying out the large-area damping bearing surface of face butt, undoubtedly withstand shocks reliably.
The 3rd, in the position near mentioned hinge, aforementioned switches door drawn-back device is configured in the outside of impact bearing device, and aforementioned switches door drawn-back device is provided with: the door arm that has the engaging protrusion body at and front end outstanding from the switch door; Have the rotary body of drawing in recess, this draw in recess be provided with on the refrigerator main body can with fasten at aforementioned engaging protrusion body engage position of readiness and draw between the position and rotate; Force application mechanism, its recess of drawing in rotary body is engaging position of readiness and is drawing in the switching and the application of force between the position, thus, the door arm that it becomes rotary body, force application mechanism on the one hand, be provided with on the switch door is difficult for producing the simple structure of fault, simultaneously by settle the door arm with Prwsnt to become unshowy towards hinge side.
The 4th, by rotating shaft base plate part that erects and the swivelling cover that is pressed in above the rotary body, with aforementioned rotating shaft is the rotary body that aforementioned switches door drawn-back device is freely supported in the center rotation, in a plurality of rigging screws that aforementioned swivelling cover are fixedly supported on the base plate part, one be set in place in the engaging position of readiness aforementioned draw in recess in abutting connection with the position, thus, especially, firmly and reliably fix the motion that the rotary body of causing for the impact draw in recess by the effect of engaging protrusion body raises up by the rigging screw of adjoining position, through also obtaining stable duty for a long time.
The 5th, in the aforementioned a plurality of rigging screws of the actuating range arranged outside of aforementioned force application mechanism, the work to force application mechanism does not play obstacle thus.
The 6th, be provided with angular guide surfaces in the recess drawing in of aforementioned switches door drawn-back device, close in front of the door by any way at the switch door and to turn to when drawing in the position, the engaging protrusion body that this angular guide surfaces is incited somebody to action door arm at closing time leads towards the aforementioned recess upper end-face edge guiding of drawing in of drawing in recess, thus, for example, even will draw in recess mistakenly turns to and draws in the position, bring harmful effect can for the pass gate action of switch door yet, and the engaging protrusion body is not fastened on with can having obstacle and draws in the recess, can not move obstacle to closing the door.
The 7th, at the impact bearing device, the outside of switch door drawn-back device, apart from hinge position configuration aforementioned switches door ejecting device farthest, and the solenoid rod of switch door is released in this switch door ejecting device setting towards the place ahead by the open operation of aforementioned operation portion, has the damping mechanism that bears from the impact in the place ahead in solenoid rod, thus, on the one hand, switch door ejecting device works as second mechanism that prevents to be hit, pass through simultaneously apart from the pushing application point of hinge away from the position, according to this principle, easily release the switch door towards the direction of opening the door with little power.
The specific embodiment
Below, specify embodiments of the invention referring to figs. 1 through the accompanying drawing of Fig. 8.
Fig. 1 is provided in a side of the schematic perspective views of the major part of impact bearing device of the present invention, switch door drawn-back device and switch door ejecting device above the refrigerator main body, and Fig. 2 is the summary front elevation of deep freezer.
The refrigerator main body 3 of deep freezer 1 from top order be refrigerating chamber 5, about ice-making compartment 7 and switch chamber 9, vegetable compartment 11 and refrigerating chamber 13, with about headed by the ice-making compartment 7 that is provided with and the switching chamber 9 front of vegetable compartment 11 and refrigerating chamber 13 all can become handle 7a, 9a by separately, 11a, 13a to the type of pulling out of nearby pulling out.
On the other hand, the front of refrigerating chamber 5 is for being the switch door 17 that splits around door type of pivot switch with hinge 15.
Switch door 17 obtains closed condition and door opening state respectively via door switch unit 19.
With left and right sides switch door 17 pair of right and left door switch unit 19 is set accordingly, it is made of switch door drawn-back device 21, switch door ejecting device 23 and impact bearing device 25.
Here since about be same configuration, so only a side is described, be marked with identical symbol, and the omission detailed description thereof as the opposing party's figure right side.
As shown in Figure 1, switch door drawn-back device 21, switch door ejecting device 23 and impact bearing device 24 from hinge 15 sides according to the arranged in order of impact bearing device 25, switch door drawn-back device 21, switch door ejecting device 23 on the top board of refrigerator main body 3 on the 3a.
Impact bearing device 25 is positioned at the position near mentioned hinge 15, and as shown in Figure 3 by cylinder body 27 and from this cylinder body 27, stretch out and always be positioned at and impact the damper rod 29 that position of readiness L can advance, retreat after by the application of force and constitute.Though the front end face 29a that is positioned at the damper rod 29 that impacts position of readiness L at closing time with switch door 17 butts, be provided with damper rod front end face 29a at the butt position of this switch door 17 and carry out the damping bearing surface 31 that face contacts.
Thus, can stop shock loading reliably by large-area surface, and because near hinge 15, so can make the interference stroke of damper rod 29 diminish.
Switch door drawn-back device 21, in the outside that is disposed at aforesaid impact bearing device 24 than near-earth near the position of mentioned hinge 15, and it has: door arm 35, this arm 35 give prominence to and have at front end the excrescence 33 of engaging from the upper surface of switch door 17; Have the swivel plate 39 of drawing in recess 37, this swivel plate 39 can turn to be located at refrigerator main body 3 on aforementionedly engage the engaging position of readiness (Fig. 4) that excrescence 33 fastens and draw in position (Fig. 5); And helical spring 41, engaging position of readiness and drawing in the force application mechanism that switches the application of force between the position as the recess 37 of drawing in swivel plate 39.
Switch door drawn-back device 21 is illustrated in figure 4 as with aforementioned impact bearing device 24 and is assembled in unit structure on the base plate part 43.Thus, when once finishing the management of number of spare parts, by base plate part 43 is installed on the 3a on the top board of refrigerator main body 3 when assembling, realize impact bearing device 24 and switch door drawn-back device 21 are installed in correct position simultaneously, can access the state of rapid installation.
As shown in Figure 5 and Figure 6, swivel plate 39 can be by rotate the supporting of intercalation freely from base plate part 43 upright rotating shafts 45.The motion that limits towards the top by swivelling cover 47 above it.Draw in recess 37 what an end setting of swivel plate 39 front openings when the plane is seen was the U word shape.Drawing in recess 37 and break away from freely by engaging and engage from the upper end of switch door 17 towards the engaging protrusion body 33 of interior side-prominent door arm 35 front ends, is rotating and become from engaging position of readiness (Fig. 4) to drawing in position (Fig. 5).
Swivel plate 39 has the helical spring 41 as force application mechanism, one end of helical spring 41 is stuck close on the fixing spring installation portion of being located on the base plate part 43 49, and the other end is stuck close near aforementioned position of drawing in recess 37, is located on the fluid spring installation portion 51 on the swivel plate 39.
As the boundary line, the amount of exercise of crossing stop becomes working range to helical spring 41 with the axial line X that is connected and fixed spring installation portion 49 and the rotating shaft 45 of swivel plate 39.Specifically, when fluid spring installation portion 51 when a direction is crossed stop, helical spring 41 is fully stretched and the spring force maximum, and, if just over stop, then make that by this spring force drawing in recess 37 rotates and navigate to engaging position of readiness (Fig. 4) at a heat.
At this moment, the primary importance of the retention tab 39a butt base plate part 43 by swivel plate 39 restriction face 43a limits motion.
In addition, with aforementioned axial line X as the boundary line, fluid spring installation portion 51 is when other direction is crossed stop, helical spring 41 fully stretches and the spring force maximum, and, if just over stop, then make that by this spring force draw in recess 37 rotates at a heat and navigate to and draw in position (Fig. 5).
At this moment, when limiting motion, guarantee the effect of drawing in reliably towards the complete closing direction of switch door via the spring force of helical spring 41 by the second place restriction face 43b that is located at the stop surface 39b butt base plate part 43 on the swivel plate 39.
Swivelling cover 47 carries out fixed support via the rigging screw 52,53 of two positions, and one is from swivelling cover 47 outward extending extensions 55 by first rigging screw, 52 fixed supports.Another is fixedly supported on the inboard of swivelling cover 47 via second rigging screw 53 at the adjoining position of drawing in recess 37 that is positioned at engaging position of readiness (Fig. 4).
Under this situation, as shown in Figure 6, on the swivel plate 39 that second rigging screw 53 connects, the circular arc slotted hole 57 that allows swivel plate 39 rotations is set, and it does not produce obstacle to rotation.
As Fig. 4, shown in Figure 5, the installation site of first, second rigging screw 52,53 is the range of movement outside that is configured in helical spring 41, and the action of helical spring 41 is not produced any obstacle.
Has following function in first, second rigging screw 52,53, particularly second rigging screw 53 of being used for installing swivelling cover 47.As shown in Figure 4, be positioned at the engaging position of readiness when (Fig. 4) when drawing in recess 37, though the elastic reaction of helical spring 41 and fasten in the engaging protrusion body 33 of the door arm 35 at closing time percussion when drawing in recess 37 butts, thereby produce the centrifugation that strengthens, but can be controlled the structure of this motion effect up by second rigging screw 53 reliably.
In addition, though the foregoing description obtains the fixed support state of swivel plate 39 by minimum 2 rigging screws 52,53, the 3rd, the 4th rigging screw can be set in addition.In this case, condition is that the installation site is beyond the working range of helical spring 41.
On the one hand, the recess 37 of drawing in of swivel plate 39 forms the U word shape by erecting perisporium, thereby guarantee with the bearing surface of the engaging protrusion body 33 of aforementioned door arm 35 big, on the other hand, for drawing in recess 37, for example, directly turn to by modes such as mischiefs and draw in position (Fig. 5), also can not hinder the switch of switch door 17 even be positioned at the recess 37 of drawing in of engaging position of readiness (Fig. 4).Specifically, drawing in the last setting of recess 37 (Fig. 5 front side) towards drawing in the acclivitous angular guide surfaces 59 of recess upper end-face edge 37a.
Thus, even turn to and draw in position (Fig. 5) at the recess 37 of drawing in that is positioned at engaging position of readiness (Fig. 4) at closing time, because the front of door arm 35 becomes free end, shown in imaginary line, the engaging protrusion body 33 of door arm 35 can rise along angular guide surfaces 59 at an easy rate, and when switch door 17 complete closures with draw in recess 37 and engage.Consequently, can guarantee the action of drawing in of switch door 17 once more by next one action.
Switch door ejecting device 23 is configured in from hinge 15 position farthest, and is illustrated in figure 7 as the solenoid type that solenoid rod 61 is given prominence to.
Mounting portion that the mounting flange 63a of device body 63 is provided with on aforementioned base plate part 43 relatively 65 is integrally fixed by fixed mechanisms such as screws.
Open operation by the operation part 67 that constitutes by the butt switch that on switch door 17, is provided with, when solenoid 69 work, solenoid rod 61 advance (arrow), and when the direction release of opening the door is in the switch door 17 of full-gear, this solenoid rod 61 can restore to the original state by recovering spring 71.
By the operating characteristic of the solenoid shown in Fig. 8 69, with to swivel plate 39 the engaging position of readiness (Fig. 4) compare with the said spiral spring 41 of drawing in position (Fig. 5) application of force, solenoid 69 always has strong characteristic.Particularly having set helical spring 41 spring force when crossing stop pretends and occurs maximum characteristic peak in the zone of usefulness.
And, be provided as the impact absorption spring 73 of damping mechanism at the rear end part of solenoid rod 61, even in the strong at closing time percussion of switch door 17 in solenoid rod 61, also the spring of using by aforementioned impact absorption 73 carries out impact absorption, and aforementioned relatively impact bearing device 25 prevents that as second beater mechanism from working.
According to the door switch unit 19 of formation like this, when full cut-off, by operation part 67 is operated, solenoid rod 61 work of switch door ejecting device 23 can be opened the door towards the place ahead release switch door 17 easily and promptly.At this moment, because solenoid rod 61 is left farthest from hinge 15, it is far away apart from hinge 15 to release application point, relies on this principle, and low weight operating physical force is to use less energy just can achieve the goal on the solenoid.
Below, if be in the switch door 17 of door opening state towards the direction of closing the door with hand push, the engaging protrusion body 33 of door arm 35 engage with the recess 37 of drawing in of swivel plate 39, simultaneously, makes rotary body 39 to the counter clockwise direction rotation.When this swivel plate 39 rotated, for helical spring 41 is crossed the stop that is made of axial line X, the spring force of the helical spring 41 by this moment made swivel plate 39 turn to and draws in position (Fig. 5).Its result, it is crack etc. that switch door 17 no longer becomes, thereby obtain full-shut position really.
On the other hand, when approaching closure fully, impact bearing device 25 works switch door 17 at closing time, simultaneously, the dual impact absorption mechanism that dependence is brought by solenoid rod 61 owing to the impact energy that prevents really at closing time, therefore can suppress impact sound and make it to diminish.In addition, bring harmful effect can for the seal member of door rotation.
In addition, even swivel plate 39 rotates to from engaging position of readiness (Fig. 4) when child's mischief etc. and draws in position (Fig. 5), because the engaging protrusion body 33 of door arm 35 rises along angular guide surfaces 59, split 17 the action of closing the door of closing the door and can not bring harmful effect, through also can obtaining stable duty for a long time.