Drawer structure for freezing chamber of refrigerator

Abstract

The invention discloses a drawer structure for a freezing chamber of a refrigerator. Comprising a drawer back plate vertically fixed to the inner wall of a freezing chamber of the refrigerator, an upper drawer support, a lower drawer support, an upper drawer box body, a lower drawer box body and a pair of sliding blocks, wherein the upper drawer support and the lower drawer support are horizontally parallel up and down and fixed to one side of the drawer back plate; the upper drawer box body and the lower drawer box body move on the upper drawer support and the lower drawer support respectively; the sliding device is used for driving the two sliding blocks to slide away from or close to the drawer back plate; the one ends of the telescopic pipes are rotationally connected with the sides, back to the drawer back plate, of the two sliding blocks respectively; the rotating device is used for controlling the two telescopic pipes to rotate; the fan-shaped clamping plate is fixed to the other ends of the telescopic pipes; and the fan-shaped clamping groove II is formed in the lower drawer box body and is used for embedding the fan-shaped clamping plate. The refrigerator has the advantage that the effect of helping a user to automatically draw and push the drawer of the freezing chamber of the refrigerator is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerator drawers, and particularly relates to a drawer structure for a refrigerator freezer compartment. Background Art

[0002] The drawer of a refrigerator freezer compartment is a component for storing frozen food. When the existing drawer of a refrigerator freezer compartment is in use, usually the user needs to manually pull out or push back the drawer drawer box from the refrigerator. When there are relatively many frozen items placed in the drawer drawer box, it is relatively laborious for the user to pull and push the drawer box. Especially when the elderly or children take the frozen items in the drawer drawer box, it is not only relatively difficult and consumes a large amount of physical strength, but also if the user uses force improperly, it may cause the drawer drawer box to fall out from the inside of the refrigerator and injure the user. Summary of the Invention

[0003] The purpose of the present invention is to provide a drawer structure for a refrigerator freezer compartment, which has the effect of helping the user to automatically pull and push the drawer box of the refrigerator freezer compartment.

[0004] The above technical purpose of the present invention is achieved through the following technical solutions: A drawer structure for a refrigerator freezer compartment includes a drawer back plate vertically fixed on the inner wall of the refrigerator freezer compartment, a pair of upper drawer brackets and lower drawer brackets that are horizontally parallel to each other up and down and fixed on one side of the drawer back plate, an upper drawer box body and a lower drawer box body that are respectively movably arranged on the upper drawer bracket and the lower drawer bracket, a pair of sliders slidably arranged on the upper drawer bracket, a sliding device for driving the two sliders to slide away from or close to the drawer back plate, a pair of telescopic tubes with one ends respectively rotatably connected to the sides of the two sliders facing away from the drawer back plate, a rotating device for controlling the rotation of the two telescopic tubes, a sector-shaped clamping plate fixed at the other end of the telescopic tube, a sector-shaped card slot one arranged on the upper drawer box body for the sector-shaped clamping plate to be inserted into, and a sector-shaped card slot two arranged on the lower drawer box body for the sector-shaped clamping plate to be inserted into;

[0005] Two mutually parallel long strip-shaped slideways are arranged inside the upper drawer bracket, and the two sliders respectively slide inside the two long strip-shaped slideways. An expansion hole communicating with the inside of the long strip-shaped slideway is arranged on the side of the upper drawer bracket away from the drawer back plate, and the telescopic tube slides out or slides back into the inside of the long strip-shaped slideway through the expansion hole. The sector-shaped clamping plate is located at the end of the telescopic tube extending out of the long strip-shaped slideway and moves in the middle gap between the upper drawer box body and the lower drawer box body;

[0006] A pair of first limiting protrusions and a pair of second limiting protrusions are respectively fixedly arranged at the bottom of the upper drawer box body and the top of the lower drawer box body. The first limiting protrusions and the second limiting protrusions are symmetrically arranged up and down and are jointly located on the side of the upper drawer support away from the drawer back plate. The first sector-shaped card slots and the second sector-shaped card slots are symmetrically arranged up and down and are respectively arranged on the first limiting protrusions and the second limiting protrusions. The telescopic pipe is located in the middle gap between the first limiting protrusions and the second limiting protrusions and can move. The sector-shaped clamping plate at the end of the telescopic pipe can be inserted into the first sector-shaped card slot or the second sector-shaped card slot through the rotational movement of the telescopic pipe. The central angle of the sector-shaped clamping plate is less than 180 degrees and greater than 90 degrees. The central angles of the first sector-shaped card slot and the second sector-shaped card slot are equal, and the sum does not exceed 180 degrees.

[0007] A further setting of the present invention is that the sliding device includes a pair of screws respectively rotatably arranged in two long strip-shaped slideways, a first threaded hole opened in the middle of the slider for the screw to be threadedly connected, a double-headed motor fixed to the drawer back plate, a pair of first bevel gears respectively fixed on the two output shafts of the double-headed motor, a pair of transmission shafts respectively rotatably arranged on the drawer back plate, and a pair of second bevel gears respectively fixed on the two transmission shafts and respectively meshing with the pair of first bevel gears.

[0008] The axis of the first threaded hole and the telescopic pipe coincides with each other, and the diameter of the first threaded hole is smaller than the inner diameter of the telescopic pipe. The screw is inserted into the interior of the telescopic pipe through the first threaded hole and the entrance at the end of the telescopic pipe. A rectangular groove one is opened on the side of the drawer back plate facing away from the upper drawer support and the lower drawer support. The double-headed motor, the first bevel gears, the transmission shafts and the second bevel gears are located in the rectangular groove one. A communication hole communicating the rectangular groove one and the long strip-shaped slideway is jointly opened inside the upper drawer support and the drawer back plate. One end of the screw extends into the rectangular groove one through the communication hole and is fixedly connected to the transmission shaft.

[0009] A further setting of the present invention is that the communication hole is square in shape and can allow the slider to pass through. A square cover plate one for blocking the communication hole is screwed to the inner wall of the rectangular groove one. A circular opening one for connecting the screw and the transmission shaft is opened in the middle of the square cover plate one.

[0010] A further setting of the present invention is that an annular plate surrounding the first threaded hole is fixedly arranged on one side of the slider. An annular protrusion one is fixedly arranged on the outer wall of the telescopic pipe and is movably inserted into the interior of the annular plate. A limiting ring is screwed to the end of the annular plate. The limiting ring is movably sleeved on the telescopic pipe and blocks the annular protrusion one from exiting the interior of the annular plate.

[0011] A further setting of the present invention is that support plates are respectively fixedly arranged on both sides of the double-headed motor in the rectangular groove one, and a circular opening two for the output shaft of the double-headed motor to rotatably pass through is opened in the middle of the support plates. Square cover plates two covering the entire opening of the rectangular groove one are jointly screwed to the support plates on both sides of the double-headed motor.

[0012] The further setting of the present invention is as follows: The rotating device includes a driving gear rotatably arranged in the middle of one side of the upper drawer bracket, a pair of driven gears rotatably arranged on one side of the upper drawer bracket and located on both sides of the driving gear respectively, two slide plates slidably arranged on one side of the upper drawer bracket and located above and below the driving gear respectively, two sets of teeth one respectively fixed on one side of the two slide plates and jointly meshing with the driving gear, two sets of teeth two respectively fixed on one side of the two slide plates and respectively meshing with the two driven gears, a knob connected to the driving gear and controlling the rotation of the driving gear, two long grooves opened on the outer wall of the telescopic tube and symmetrically located on both sides of the axis of the telescopic tube, and a pair of positioning rods fixedly connected to the driven gears and respectively sliding in the two long grooves on the side wall of the telescopic tube. A rectangular groove two is opened on the side of the upper drawer bracket away from the drawer back plate, and the driving gear, the driven gears, the slide plates and the telescopic hole are located inside the rectangular groove two. A support ring one surrounding the telescopic hole is fixedly arranged on the inner wall of the rectangular groove two, and the driven gears are rotatably sleeved on the support ring one. A control shaft is rotatably arranged inside the rectangular groove two, the driving gear is fixedly sleeved on the control shaft, and the knob is fixedly connected to one end of the control shaft.

[0013] The further setting of the present invention is as follows: A plurality of columnar protrusions are fixedly arranged on the inner wall of the rectangular groove two. All the columnar protrusions are screwed with a square cover plate three covering the opening of the entire rectangular groove two. A circular opening three for the telescopic tube to pass through the rectangular groove two is opened on the square cover plate three. A circular groove for the knob to rotate and move is arranged on the side of the square cover plate three facing the outside of the rectangular groove two. A circular opening four for the control shaft to connect to the knob is opened on the square cover plate three. A support ring two surrounding the circular opening three is fixedly arranged on the side of the square cover plate three facing the inside of the rectangular groove two, and the driven gears are rotatably sleeved on the support ring two. The positioning rods are fixed on the inner wall of the driven gears. The support ring two and the support ring one have the same axis and the same outer diameter, and a gap for the two positioning rods to pass through is left between them.

[0014] The further setting of the present invention is as follows: An annular groove surrounding the circular opening four is opened on the side of the square cover plate three facing the inside of the rectangular groove two. An annular protrusion two rotatably moving in the annular groove is fixedly sleeved on the control shaft. A slide hole perpendicular to the annular groove and communicating with the inside of the annular groove is opened inside the square cover plate three. A slide bar is slidably arranged in the slide hole. A locking pin is fixedly arranged on the side of the slide bar close to the annular groove, and the head of the locking pin is hemispherical. Four locking grooves for the locking pin to be inserted into are uniformly opened on the outer surface of the annular protrusion two, and the cross section of the locking groove is arc-shaped. A spring is arranged inside the slide hole, and the spring pushes the slide bar so that the locking pin is inserted into the locking groove.

[0015] The present invention is further configured as follows: a square groove is provided on the top of the square cover plate three, two ends of the sliding hole are respectively connected to the square groove and the annular groove, the inside of the square groove is screwed to connect the square cover plate four covering the sliding hole, the spring is located between the square cover plate four and the sliding rod, and the two ends of the spring are respectively close to the square cover plate four and one side of the sliding rod.

[0016] The beneficial effect of the present invention is that, by adopting the above-mentioned drawer structure, when there are many frozen items stored in the upper drawer box or the lower drawer box, and they are relatively heavy, the user can control the telescopic tube to rotate relative to the telescopic hole in advance through the rotating device, so that the fan-shaped clamping plate part at the end of the telescopic tube is rotatably embedded in the fan-shaped clamping groove 1 or the fan-shaped clamping groove 2. If the user wants to take out the frozen items in the upper drawer box or the lower drawer box at this time, the switch of the sliding device can be turned on, so that the sliding device drives the slider to slide relative to the rectangular groove 1, and the telescopic tube with one end rotatably connected to the slider will gradually extend out of the telescopic hole under the sliding of the slider. Because the fan-shaped clamping plate part at the end of the telescopic tube is previously embedded in the fan-shaped clamping groove 1 or the fan-shaped clamping groove 2, and the fan-shaped clamping groove 1 is located on the limiting protrusion 1 at the bottom of the upper drawer box body, and the fan-shaped clamping groove 2 is located on the limiting protrusion 2 at the top of the lower drawer box body, during the process of the telescopic tube extending out of the telescopic hole, The fan-shaped card plate will slowly and steadily push the upper drawer box or the lower drawer box out of the refrigerator through the fan-shaped card slot one or the fan-shaped card slot two, and until an opening is opened for the user to conveniently take out the frozen items in the upper drawer box or the lower drawer box; finally, after the user takes out the desired frozen items, he / she turns on the sliding device switch again, and the slider will pull the telescopic tube in the opposite direction to retract the telescopic hole, and at the same time the fan-shaped card plate pulls the upper drawer box or the lower drawer box back into the refrigerator, thereby achieving the effect of automatically pulling out and pushing the upper drawer box or the lower drawer box; if the user uses the rotating device again to control the two parts of the fan-shaped card plate, and rotates and embeds them in the fan-shaped card slot one and the fan-shaped card slot two at the same time, the power supply of the sliding device is disconnected at this time, and the upper drawer box and the lower drawer box can be completely locked inside the refrigerator, thereby effectively preventing children from using the refrigerator and preventing children from falling and injuring the drawer box and frozen items due to improper operation of pulling out and pushing the drawer box inside the refrigerator.

[0017] The above-mentioned drawer structure with automatic pull-out and push-out boxes is not only easy and convenient for users to use, but also highly flexible. Users can choose the drawers they want to pull out automatically and not use the automatic pull-out and push-out function according to their needs. At the same time, the speed of the automatic pull-out and push-out process of the drawer structure is smooth and stable, and it also has a child safety locking function. Therefore, it is safer than traditional refrigerator drawers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0019] Figure 1 is the three-dimensional structure schematic diagram of this embodiment;

[0020] Figure 2 is the usage effect diagram of this embodiment;

[0021] Figure 3 is the schematic diagram of the positional relationship among the sector-shaped card board, the first sector-shaped card slot, and the second sector-shaped card slot of this embodiment;

[0022] Figure 4 is the cross-sectional view of the upper drawer support structure of this embodiment;

[0023] Figure 5 is the schematic diagram of the rotation device structure of this embodiment;

[0024] Figure 6 is the schematic diagram of the connection relationship between the control shaft and the third square cover plate of this embodiment;

[0025] Figure 7 is Figure 4 the enlarged view of part A of

[0026] Figure 8 is Figure 4 the enlarged view of part B of

[0027] Figure 9 is Figure 4 the enlarged view of part C of

[0028] In the figure, 1 is the drawer back panel; 11 is the first rectangular groove; 12 is the communication hole; 13 is the first square cover plate; 131 is the first circular opening; 14 is the support plate; 141 is the second circular opening; 15 is the second square cover plate; 2 is the upper drawer bracket; 21 is the long slideway; 22 is the telescopic hole; 23 is the second rectangular groove; 231 is the first support ring; 24 is the control shaft; 241 is the second annular protrusion; 241a is the locking groove; 25 is the columnar protrusion; 26 is the third square cover plate; 261 is the third circular opening; 262 is the circular groove; 263 is the fourth circular opening; 264 is the second support ring; 265 is the annular groove; 266 is the sliding hole; 267 is the square groove; 27 is the fourth square cover plate; 28 is the slide bar; 281 is the locking pin; 29 is the spring; 3 is the lower drawer bracket; 4 is the upper drawer box body; 41 is the first limit protrusion; 5 is the lower drawer box body; 51 is the second limit protrusion; 6 is the slider; 61 is the annular plate; 62 is the limit ring; 7 is the sliding device; 71 is the screw; 72 is the first threaded hole; 73 is the double-headed motor; 74 is the first bevel gear; 75 is the transmission shaft; 76 is the second bevel gear; 8 is the telescopic tube; 81 is the first annular protrusion; 9 is the rotating device; 91 is the driving gear; 92 is the driven gear; 93 is the slide plate; 94 is the first ratchet; 95 is the second ratchet; 96 is the knob; 97 is the long groove; 98 is the positioning rod; 10 is the sector-shaped clamping plate; 101 is the first sector-shaped clamping groove; 102 is the second sector-shaped clamping groove. Detailed implementation mode

[0029] The technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0030] Embodiment: A drawer structure for the freezer of a refrigerator, as Figure 1-4 shown, includes a drawer back panel 1 vertically fixed on the inner wall of the refrigerator freezer, a pair of upper drawer brackets 2 and lower drawer brackets 3 that are horizontally parallel and fixed on one side of the drawer back panel 1, a pair of upper drawer box bodies 4 and lower drawer box bodies 5 that are respectively movable on the upper drawer brackets 2 and lower drawer brackets 3, a pair of sliders 6 slidably arranged on the upper drawer brackets 2, a sliding device 7 for driving the two sliders 6 to slide away from or close to the drawer back panel 1, a pair of telescopic tubes 8 with one ends respectively rotatably connected to the sides of the two sliders 6 facing away from the drawer back panel 1, a rotating device 9 for controlling the rotation of the two telescopic tubes 8, a sector-shaped clamping plate 10 fixed to the other ends of the telescopic tubes 8, a first sector-shaped clamping groove 101 provided on the upper drawer box body 4 for the sector-shaped clamping plate 10 to be embedded, and a second sector-shaped clamping groove 102 provided on the lower drawer box body 5 for the sector-shaped clamping plate 10 to be embedded;

[0031] There are two mutually parallel long slideways 21 arranged inside the upper drawer support 2, and two sliders 6 respectively slide inside the two long slideways 21. On the side of the upper drawer support 2 away from the drawer back plate 1, there is a telescopic hole 22 communicating with the inside of the long slideway 21, and the telescopic tube 8 slides out or slides back into the inside of the long slideway 21 through the telescopic hole 22. The sector-shaped clamping plate 10 is located at one end of the telescopic tube 8 extending out of the long slideway 21 and moves in the middle gap between the upper drawer body 4 and the lower drawer body 5.

[0032] On the bottom of the upper drawer body 4 and the top of the lower drawer body 5, there are respectively fixed a pair of first limiting protrusions 41 and a pair of second limiting protrusions 51. The first limiting protrusions 41 and the second limiting protrusions 51 are symmetrically arranged up and down and are jointly located on the side of the upper drawer support 2 away from the drawer back plate 1. The first sector-shaped card slot 101 and the second sector-shaped card slot 102 are symmetrically arranged up and down and are respectively arranged on the first limiting protrusions 41 and the second limiting protrusions 51. The telescopic tube 8 moves in the middle gap between the first limiting protrusions 41 and the second limiting protrusions 51, and the sector-shaped clamping plate 10 at the end of the telescopic tube 8 can be embedded into the first sector-shaped card slot 101 or the second sector-shaped card slot 102 through the rotational movement of the telescopic tube 8. The central angle of the sector-shaped clamping plate 10 is less than 180 degrees and greater than 90 degrees. The central angles of the first sector-shaped card slot 101 and the second sector-shaped card slot 102 are equal, and the sum does not exceed 180 degrees.

[0033] As Figure 4 、 Figure 7 shown, the sliding device 7 includes a pair of screws 71 respectively rotatably arranged in the two long slideways 21, a first threaded hole 72 opened in the middle of the slider 6 for the screw 71 to be threadedly connected, a double-headed motor 73 fixed on the drawer back plate 1, a pair of first bevel gears 74 respectively fixed on the two output shafts of the double-headed motor 73, a pair of transmission shafts 75 respectively rotatably arranged on the drawer back plate 1, and a pair of second bevel gears 76 respectively fixed on the two transmission shafts 75 and respectively meshing with the two first bevel gears 74. The central axis lines of the first threaded hole 72 and the telescopic tube 8 coincide with each other, and the inner diameter of the first threaded hole 72 is smaller than the inner diameter of the telescopic tube 8. The screw 71 is inserted into the inside of the telescopic tube 8 through the first threaded hole 72 and the entrance at the end of the telescopic tube 8. On the side of the drawer back plate 1 facing away from the upper drawer support 2 and the lower drawer support 3, there is a first rectangular groove 11 opened. The double-headed motor 73, the first bevel gears 74, the transmission shafts 75 and the second bevel gears 76 are located in the first rectangular groove 11. There is a communication hole 12 jointly opened inside the upper drawer support 2 and the drawer back plate 1 to communicate the first rectangular groove 11 and the long slideway 21. One end of the screw 71 extends into the first rectangular groove 11 through the communication hole 12 and is fixedly connected to the transmission shaft 75.

[0034] By adopting the above-mentioned sliding device 7, when it is necessary to drive the slider 6 to slide relative to the long strip slideway 21, first, the double-headed motor 73 is started, so that the two output shafts of the double-headed motor 73 drive the two second bevel gears 76 to rotate respectively. Then, the two second bevel gears 76 respectively mesh and drive the two first bevel gears 74, so that the transmission shaft 75 connected to the two first bevel gears 74 rotates. Since one end of the transmission shaft 75 is connected to the screw rod 71, the screw rod 71 will rotate relative to the long strip slideway 21. Also, because the threaded hole on the slider 6 is threadedly connected to the screw rod 71, finally, the slider 6 will slide along the long strip slideway 21 under the rotation of the screw rod 71, and push the telescopic rod to extend or retract from the long strip slideway 21.

[0035] As Figure 7 shown, the communication hole 12 is square-shaped and can allow the slider 6 to pass through. A square cover plate one 13 that blocks the communication hole 12 is screwed to the inner wall of the first rectangular groove 11. A circular opening one 131 for connecting the screw rod 71 and the transmission shaft 75 to each other is provided in the middle of the square cover plate one 13. By adopting the screwed connection structure of the above-mentioned communication hole 12 and the square cover plate one 13, it can allow the installation and maintenance personnel to reasonably assemble or disassemble and replace the internal parts of the long strip slideway 21.

[0036] As Figure 4 、 Figure 8 shown, an annular plate 61 surrounding the threaded hole one 72 is fixedly arranged on one side of the slider 6. An annular protrusion one 81 that is movably inserted into the inside of the annular plate 61 is fixedly arranged on the outer wall of the telescopic tube 8. A limit ring 62 is screwed to the end of the annular plate 61. The limit ring 62 is movably sleeved on the telescopic tube 8 and blocks the annular protrusion one 81 from exiting the inside of the annular plate 61. By adopting the above-mentioned structures such as the annular plate 61 and the annular protrusion one 81, not only can the rotational connection between the slider 6 and the end of the telescopic tube 8 be reasonably realized, but also, in combination with the screwed connection structure between the limit ring 62 and the annular plate 61, it can allow the installation and maintenance personnel to reasonably assemble and disassemble and replace the slider 6 and the telescopic rod.

[0037] As Figure 4 shown, support plates 14 are respectively fixedly arranged on both sides of the double-headed motor 73 in the first rectangular groove 11, and a circular opening two 141 for the output shaft of the double-headed motor 73 to rotate through is provided in the middle of the support plate 14. The support plates 14 on both sides of the double-headed motor 73 are jointly screwed with a square cover plate two 15 that covers the opening of the entire first rectangular groove 11. By adopting the above-mentioned support plates 14, not only can the two output shafts of the double-headed motor 73 be effectively supported to rotate stably, but also, in combination with the square cover plate two 15, the first rectangular groove 11 can be completely blocked and covered, thereby effectively protecting the working safety of the internal parts of the first rectangular groove 11.

[0038] As Figure 4 、 Figure 5As shown in the figure, the rotating device 9 includes a driving gear 91 rotatably arranged in the middle of one side of the upper drawer bracket 2, a pair of driven gears 92 rotatably arranged on one side of the upper drawer bracket 2 and located on both sides of the driving gear 91 respectively, two sliding plates 93 slidably arranged on one side of the upper drawer bracket 2 and located above and below the driving gear 91 respectively, two groups of first teeth 94 respectively fixed on one side of the two sliding plates 93 and jointly meshing with the driving gear 91, two groups of second teeth 95 respectively fixed on one side of the two sliding plates 93 and respectively meshing with the two driven gears 92, a knob 96 connected to the driving gear 91 and controlling the rotation of the driving gear 91, two long grooves 97 opened on the outer wall of the telescopic tube 8 and symmetrically located on both sides of the axis of the telescopic tube 8, and a pair of positioning rods 98 fixedly connected to the driven gears 92 and respectively sliding in the two long grooves 97 on the side wall of the telescopic tube 8. A rectangular groove two 23 is opened on the side of the upper drawer bracket 2 away from the drawer back plate 1, and the driving gear 91, the driven gears 92, the sliding plates 93 and the telescopic hole 22 are located inside the rectangular groove two 23. A first support ring 231 surrounding the telescopic hole 22 is fixedly arranged on the inner wall of the rectangular groove two 23, and the driven gears 92 are rotatably sleeved on the first support ring 231. A control shaft 24 is rotatably arranged inside the rectangular groove two 23, the driving gear 91 is fixedly sleeved on the control shaft 24, and the knob 96 is fixedly connected to one end of the control shaft 24.

[0039] By adopting the above rotating device 9, when it is necessary to control the rotation of the two telescopic tubes 8, the user manually twists the knob 96 to make the control shaft 24 and the driving gear 91 rotate. Then, the sliding plates 93 distributed above and below the driving gear 91 will slide relative to the rectangular groove two 23 respectively under the meshing of the driving gear 91 and the first teeth 94. Then, the second teeth 95 on the sliding plates 93 will mesh and drive the driven gears 92 during the movement of the sliding plates 93, so that the driven gears 92 and the positioning rods 98 rotate around the first support ring 231. Since the two positioning rods 98 on the driven gears 92 slide in the two long grooves 97 on the side wall of the telescopic tube 8 respectively, during the rotation of the positioning rods 98, the telescopic tube 8 will rotate relative to the telescopic hole 22 and drive the sector-shaped clamping plate 10 to rotate and embed into the sector-shaped card slot one 101 or the sector-shaped card slot two 102.

[0040] As Figure 4 、 Figure 5 and Figure 9As shown, the inner wall of the rectangular groove 23 is fixedly provided with a plurality of columnar protrusions 25, all the columnar protrusions 25 are screwed to a square cover plate 3 26 covering the entire opening of the rectangular groove 23, the square cover plate 3 26 is provided with a circular opening 3 261 for the telescopic tube 8 to pass through the rectangular groove 23, the square cover plate 3 26 is provided with a circular groove 262 for the knob 96 to rotate and move on the side facing the outside of the rectangular groove 23, and the square cover plate 3 26 is provided with a The control shaft 24 is provided with a circular opening 4 263 for connecting the knob 96. A support ring 2 264 surrounding the circular opening 3 261 is fixedly arranged on one side of the square cover plate 3 26 facing the inside of the rectangular groove 23. The driven gear 92 is rotatably sleeved on the support ring 2 264. The positioning rod 98 is fixed on the inner wall of the driven gear 92. The support ring 2 264 and the support ring 1 231 have the same axis and outer diameter, and there is a gap between the two for the two positioning rods 98 to pass through. By adopting the above-mentioned columnar protrusion 25 and the square cover plate 3 26, not only can the rectangular groove 23 be completely covered to protect the working safety of the internal parts of the rectangular groove 23, but also the support ring 2 264 on the square cover plate 3 26 can cooperate with the support ring 1 231 to stably support the rotation of the driven gear 92 and the positioning rod 98.

[0041] like Figure 5 , Figure 6 As shown, a ring groove 265 surrounding the circular opening 4 263 is provided on one side of the square cover plate 3 26 facing the inside of the rectangular groove 23, a ring protrusion 241 that is fixedly sleeved and rotatably movable in the ring groove 265 is provided on the control shaft 24, a vertical ring groove 265 is provided inside the square cover plate 3 26 and is connected to a sliding hole 266 inside the ring groove 265, a sliding rod 28 is slidably provided in the sliding hole 266, a locking pin 281 is fixedly provided on the side of the sliding rod 28 close to the ring groove 265, and the head of the locking pin 281 is in a hemispherical shape, four locking grooves 241a for the locking pin 281 to be inserted are evenly provided on the outer surface of the ring protrusion 241, and the cross-section of the locking groove 241a is in an arc shape, a spring 29 is provided inside the sliding hole 266, and the spring 29 pushes the sliding rod 28 to make the locking pin 281 inserted into the locking groove 241a.

[0042] By adopting the simple locking structure composed of the above-mentioned annular protrusion 241, sliding rod 28, locking pin 281 and other components, not only can the user be helped to rotate the knob 96 to an accurate angle position when the user turns the knob 96 to ensure that the fan-shaped clamping plate 10 at the end of the telescopic tube 8 can be accurately rotated to embed or stagger the fan-shaped clamping groove 101 and the fan-shaped clamping groove 202, but also the hemispherical shape of the head of the locking pin 281 and the arc shape of the locking groove 241a can also prevent the rotation of the control shaft 24 from being completely locked. The user only needs to exert a certain amount of force to turn the knob 96 again to quickly unlock the rotation lock of the control shaft 24.

[0043] like Figure 6 As shown, a square groove 267 is provided on the top of the square cover plate 26, and the two ends of the slide hole 266 are connected to the square groove 267 and the annular groove 265 respectively. The square groove 267 is internally screwed to connect the square cover plate 27 covering the slide hole 266, and the spring 29 is located between the square cover plate 27 and the slide rod 28, and the two ends of the spring 29 are respectively close to the square cover plate 27 and one side of the slide rod 28. By adopting the above-mentioned square groove 267 and square cover plate 27 screw connection, the installation and maintenance personnel can reasonably assemble or replace the internal parts of the slide hole 266.

[0044] The working principle of this embodiment:

[0045] When there are many frozen items stored in the upper drawer box 4 or the lower drawer box 5, and they are heavy, the user can control the telescopic tube 8 to rotate relative to the telescopic hole 22 through the rotating device 9 in advance, so that the fan-shaped card plate 10 at the end of the telescopic tube 8 is rotated and embedded in the fan-shaped card slot 1 101 or the fan-shaped card slot 2 102. If the user wants to take out the frozen items in the upper drawer box 4 or the lower drawer box 5 at this time, the user can turn on the switch of the sliding device 7, so that the sliding device 7 drives the slider 6 relative to the long strip. The slideway 21 slides, and at the same time, the telescopic tube 8, one end of which is rotatably connected to the slider 6, gradually extends out of the telescopic hole 22 under the sliding of the slider 6. Since the fan-shaped card plate 10 at the end of the telescopic tube 8 is previously embedded in the fan-shaped card groove 101 or the fan-shaped card groove 202, and the fan-shaped card groove 101 is located on the limiting protrusion 1 41 at the bottom of the upper draw box body 4, and the fan-shaped card groove 202 is located on the limiting protrusion 2 51 at the top of the lower draw box body 5, the fan-shaped card groove 102 is located on the limiting protrusion 2 51 at the top of the lower draw box body 5. When the refrigerator is opened, the upper and lower boxes 4 and 5 are automatically pulled out of the refrigerator, and the upper and lower boxes 4 and 5 are automatically pulled out of the refrigerator.

[0046] For the drawer structure of the above-mentioned automatic push-pull drawer for the box, it is not only easy and convenient for users to use, but also highly flexible. Users can independently select the box they want to automatically push-pull and not use the automatic push-pull function according to their needs. At the same time, the speed of the automatic push-pull process of the box by this drawer structure is gentle and stable, and it also has a child safety locking function. Therefore, it has better safety than traditional refrigerator drawers.

Claims

1. A drawer structure for a freezer compartment of a refrigerator, characterized in that, It includes a drawer backboard (1) vertically fixed to the inner wall of the refrigerator freezer, a pair of upper drawer brackets (2) and lower drawer brackets (3) horizontally parallel and fixed to one side of the drawer backboard (1), a pair of upper drawer boxes (4) and lower drawer boxes (5) respectively moving on the upper drawer brackets (2) and lower drawer brackets (3), a pair of sliders (6) slidably arranged on the upper drawer brackets (2), a sliding device (7) for driving the two sliders (6) to slide away from or close to the drawer backboard (1), a pair of telescopic tubes (8) with one end respectively rotatably connected to the sides of the two sliders (6) facing away from the drawer backboard (1), a rotating device (9) for controlling the rotation of the two telescopic tubes (8), a sector-shaped clamping plate (10) fixed to the other end of the telescopic tube (8), a sector-shaped card slot one (101) arranged on the upper drawer box (4) for the sector-shaped clamping plate (10) to be inserted into, and a sector-shaped card slot two (102) arranged on the lower drawer box (5) for the sector-shaped clamping plate (10) to be inserted into; Two mutually parallel long slideways (21) are arranged inside the upper drawer bracket (2), and the two sliders (6) respectively slide inside the two long slideways (21). An expansion hole (22) communicating with the inside of the long slideway (21) is arranged on the side of the upper drawer bracket (2) away from the drawer backboard (1), and the telescopic tube (8) slides out or slides back into the inside of the long slideway (21) through the expansion hole (22). The sector-shaped clamping plate (10) is located at the end of the telescopic tube (8) extending out of the long slideway (21) and moves in the middle gap between the upper drawer box (4) and the lower drawer box (5); A pair of first limiting protrusions (41) and a pair of second limiting protrusions (51) are respectively fixedly arranged at the bottom of the upper drawer box (4) and the top of the lower drawer box (5). The first limiting protrusions (41) and the second limiting protrusions (51) are symmetric up and down and are both located on the side of the upper drawer bracket (2) away from the drawer backboard (1). The sector-shaped card slot one (101) and the sector-shaped card slot two (102) are symmetric with each other up and down and are respectively arranged on the first limiting protrusions (41) and the second limiting protrusions (51). The telescopic tube (8) moves in the middle gap between the first limiting protrusions (41) and the second limiting protrusions (51), and the sector-shaped clamping plate (10) at the end of the telescopic tube (8) can be inserted into the sector-shaped card slot one (101) or the sector-shaped card slot two (102) through the rotational movement of the telescopic tube (8). The central angle of the sector-shaped clamping plate (10) is less than 180 degrees and greater than 90 degrees. The central angles of the sector-shaped card slot one (101) and the sector-shaped card slot two (102) are equal, and the sum does not exceed 180 degrees.

2. The drawer structure for the freezer compartment of a refrigerator according to claim 1, characterized in that: The sliding device (7) includes a pair of screws (71) respectively rotatably arranged in two long slideways (21), a first threaded hole (72) formed in the middle of the slider (6) for threaded connection with the screw (71), a double-headed motor (73) fixed to the drawer back plate (1), a pair of first bevel gears (74) respectively fixed to the two output shafts of the double-headed motor (73), a pair of transmission shafts (75) respectively rotatably arranged on the drawer back plate (1), and a pair of second bevel gears (76) respectively fixed to the two transmission shafts (75) and respectively meshing with the two first bevel gears (74). The axis of the first threaded hole (72) and the telescopic tube (8) coincides with each other, and the diameter of the first threaded hole (72) is smaller than the inner diameter of the telescopic tube (8). The screw (71) is movably inserted into the interior of the telescopic tube (8) through the first threaded hole (72) and the entrance at the end of the telescopic tube (8). On one side of the drawer back plate (1) facing away from the upper drawer bracket (2) and the lower drawer bracket (3), a first rectangular groove (11) is formed. The double-headed motor (73), the first bevel gears (74), the transmission shafts (75), and the second bevel gears (76) are located in the first rectangular groove (11). A communication hole (12) communicating the first rectangular groove (11) and the long slideway (21) is jointly formed inside the upper drawer bracket (2) and the drawer back plate (1). One end of the screw (71) extends into the first rectangular groove (11) through the communication hole (12) and is fixedly connected to the transmission shaft (75).

3. The drawer structure for the freezer compartment of a refrigerator according to claim 2, characterized in that: The communication hole (12) is square in shape and can allow the slider (6) to pass through. A square cover plate one (13) for blocking the communication hole (12) is screwed to the inner wall of the first rectangular groove (11). A first circular opening (131) for connecting the screw (71) and the transmission shaft (75) to each other is formed in the middle of the square cover plate one (13).

4. A drawer structure for a freezer compartment of a refrigerator according to claim 2, characterized in that: An annular plate (61) surrounding the first threaded hole (72) is fixedly arranged on one side of the slider (6). An annular protrusion one (81) which is movably inserted into the interior of the annular plate (61) is fixedly arranged on the outer wall of the telescopic tube (8). A limiting ring (62) is screwed to the end of the annular plate (61). The limiting ring (62) is movably sleeved on the telescopic tube (8) and blocks the annular protrusion one (81) from withdrawing from the interior of the annular plate (61).

5. The drawer structure for a refrigerator freezer compartment according to claim 2, characterized in that: Support plates (14) are respectively fixedly arranged on both sides of the double-headed motor (73) in the first rectangular groove (11). A second circular opening (141) for the output shaft of the double-headed motor (73) to rotatably pass through is formed in the middle of the support plate (14). Square cover plates two (15) covering the opening of the entire first rectangular groove (11) are jointly screwed to the support plates (14) on both sides of the double-headed motor (73).

6. The drawer structure for a refrigerator freezer according to claim 1, characterized in that: The rotation device (9) includes a driving gear (91) rotatably arranged in the middle of one side of the upper drawer bracket (2), a pair of driven gears (92) rotatably arranged on one side of the upper drawer bracket (2) and located on both sides of the driving gear (91) respectively, two sliding plates (93) slidably arranged on one side of the upper drawer bracket (2) and located above and below the driving gear (91) respectively, two groups of first teeth (94) respectively fixed on one side of the two sliding plates (93) and jointly meshing with the driving gear (91), two groups of second teeth (95) respectively fixed on one side of the two sliding plates (93) and respectively meshing with the two driven gears (92), a knob (96) connected to the driving gear (91) and controlling the rotation of the driving gear (91), two long grooves (97) opened on the outer wall of the telescopic tube (8) and symmetrically located on both sides of the axis of the telescopic tube (8), and a pair of positioning rods (98) fixedly connected to the driven gears (92) and respectively sliding in the two long grooves (97) on the side wall of the telescopic tube (8). A rectangular groove two (23) is opened on the side of the upper drawer bracket (2) away from the drawer back plate (1), and the driving gear (91), the driven gears (92), the sliding plates (93) and the telescopic hole (22) are located inside the rectangular groove two (23). A first support ring (231) surrounding the telescopic hole (22) is fixedly arranged on the inner wall of the rectangular groove two (23), and the driven gear (92) is rotatably sleeved on the first support ring (231). A control shaft (24) is rotatably arranged inside the rectangular groove two (23), the driving gear (91) is fixedly sleeved on the control shaft (24), and one end of the control shaft (24) is fixedly connected to the knob (96).

7. The drawer structure for a refrigerator freezer compartment according to claim 6, characterized in that: A plurality of columnar protrusions (25) are fixedly arranged on the inner wall of the rectangular groove two (23), and a square cover plate three (26) covering the opening of the entire rectangular groove two (23) is screwed to all the columnar protrusions (25). A circular opening three (261) for the telescopic tube (8) to pass through the rectangular groove two (23) is opened on the square cover plate three (26). A circular groove (262) for the knob (96) to rotate is arranged on the side of the square cover plate three (26) facing the outside of the rectangular groove two (23). A circular opening four (263) for the control shaft (24) to connect to the knob (96) is opened on the square cover plate three (26). A second support ring (264) surrounding the circular opening three (261) is fixedly arranged on the side of the square cover plate three (26) facing the inside of the rectangular groove two (23), and the driven gear (92) is rotatably sleeved on the second support ring (264). The positioning rod (98) is fixed on the inner wall of the driven gear (92). The second support ring (264) and the first support ring (231) are coaxial and have the same outer diameter, and there is a gap for the two positioning rods (98) to pass through between them.

8. A drawer structure for a refrigerator freezer compartment according to claim 7, characterized in that: On one side of the third square cover plate (26) facing the inside of the second rectangular groove (23), a circular groove (265) surrounding the fourth circular opening (263) is formed. An annular protrusion two (241) that rotates and moves within the circular groove (265) is fixedly sleeved on the control shaft (24). A slide hole (266) that is perpendicular to the circular groove (265) and communicates with the inside of the circular groove (265) is formed inside the third square cover plate (26). A slide rod (28) is slidably arranged in the slide hole (266). A locking pin (281) is fixedly arranged on the side of the slide rod (28) close to the circular groove (265), and the head of the locking pin (281) is hemispherical. Four locking grooves (241a) into which the locking pin (281) can be inserted are uniformly formed on the outer surface of the annular protrusion two (241), and the cross-section of the locking groove (241a) is arc-shaped. A spring (29) is arranged inside the slide hole (266), and the spring (29) pushes the slide rod (28) so that the locking pin (281) is inserted into the locking groove (241a).

9. A drawer structure for a refrigerator freezer compartment according to claim 8, characterized in that: A square groove (267) is formed at the top of the third square cover plate (26). The two ends of the slide hole (266) communicate with the square groove (267) and the circular groove (265) respectively. A fourth square cover plate (27) that covers the slide hole (266) is screwed and connected inside the square groove (267). The spring (29) is located between the fourth square cover plate (27) and the slide rod (28), and the two ends of the spring (29) are respectively close to one side of the fourth square cover plate (27) and the slide rod (28).

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