CN107270621B - refrigerator - Google Patents

Abstract

The invention provides a refrigerator, which comprises a box body and a storage box installed in the box body, and a slideway, a sliding a rod, a first rotating shaft arranged on the same side as the sliding rod, and a first sliding wheel sleeved on the first rotating shaft, the sliding rod, the first sliding wheel and the slideway cooperate with each other, to drive the storage box to be pulled back and forth in the box; wherein, the outer contour of the first sliding wheel is set in the shape of a truncated cone. In the refrigerator of the present invention, during the process of pulling the storage box along the box body, under the action of gravity, the center of gravity of the storage box is automatically aligned with the middle position of the slideway, and the force generated artificially when pushing and pulling will be matched by the sliding wheel. The reaction force generated by the slideway and the slide bar is offset to avoid the phenomenon of unsmooth sliding caused by the left and right shaking of the storage box when pushing and pulling.

Description

refrigerator

technical field

The invention relates to the field of refrigeration equipment, in particular to a refrigerator.

Background technique

As a container that can keep food or other items in a constant low temperature and cold state, a refrigerator has become one of the indispensable household appliances in modern families. Wherein the refrigerator usually includes a refrigerating compartment and a freezing compartment which are arranged separately from each other, and a drawable storage box can be arranged in the refrigerating compartment or the freezing compartment for separately storing food which needs to be preserved at different temperatures. thing.

Usually, a slideway and a slide bar that cooperate with each other are set between the storage box and the box body, and rollers that cooperate with the slideway and/or the slide bar are arranged to facilitate the storage box to be pulled back and forth from the compartment of the refrigerator The track that the existing slide bar slides is a horizontal track, and the rollers are conventional rollers, that is, each axial section of the rollers has the same size, so that the storage box runs horizontally and smoothly during the push-pull process. However, since the liner that constitutes the refrigerator box needs to be foamed during the manufacturing process, it is difficult to accurately control the size of the side wall of the box after foaming, which deviates from the theoretical size. In this way, the storage box and the side wall of the refrigerator In this case, once the storage box receives force in the left and right directions during the pulling process, it will not run smoothly, and the storage box will be biased in the left and right directions to its adjacent refrigerator. One side wall, so that the storage box is stuck during the pulling process, and the pushing and pulling is not smooth.

Contents of the invention

The object of the present invention is to provide a refrigerator; the refrigerator includes: a box body and a storage box installed in the box body, and an inner side wall of the box body and an outer side wall of the storage box are arranged There are slideways and slide bars that cooperate with each other, a first rotating shaft arranged on the same side as the sliding bar, and a first sliding wheel sleeved on the first rotating shaft. The sliding bar, the first sliding wheel Cooperate with the slideway to drive the storage box to be pulled back and forth in the box;

Wherein, the outer contour of the first sliding wheel is set in the shape of a truncated cone.

As a further improvement of an embodiment of the present invention, the slideway is fixedly installed on the inner side wall of the box body, the slide bar and the first rotating shaft are fixedly installed on the outer wall of the storage box,

The slide bar has an end disposed adjacent to the rear wall of the storage box and a front end disposed opposite to the end;

The first rotating shaft is arranged at the end of the sliding rod, and the end with a larger axial section of the first sliding wheel is arranged close to the storage box.

As a further improvement of an embodiment of the present invention, the slideway has an upper rail and a lower rail that cooperate with the first sliding wheel, and the upper rail and the lower rail respectively have an upper rail abutment surface disposed adjacent to the first sliding wheel and the lower rail abutment surface;

At least the abutment surface of the upper rail and the lower rail in contact with the first sliding wheel during the pulling process of the storage box is set as an inclined surface extending from the storage box up and down;

During the pulling process of the storage box, the edges of each axial section of the first sliding wheel are segmented and continuously tangent to the upper rail abutting surface and the lower rail abutting surface.

As a further improvement of an embodiment of the present invention, the upper rail abutting surface and the lower rail abutting surface are entirely set as inclined surfaces extending from the storage box up and down.

As a further improvement of an embodiment of the present invention, the inclination angle of the abutting surface contacting the first sliding wheel of the upper track and the lower track during the pulling process of the storage box ranges from 10 degrees to 30 degrees.

As a further improvement of an embodiment of the present invention, the abutting surface of the lower rail includes: a first abutting surface, the first abutting surface has an end disposed adjacent to the rear wall of the box body and is disposed opposite to the end Front end;

The second abutting surface extending from the end of the first abutting surface, the third abutting surface extending from the other end of the second abutting surface, and the fourth abutting surface extending from the other end of the third abutting surface holding face;

Both the first abutting surface and the third abutting surface smoothly extend from the front and rear horizontal directions;

The second abutting surface extends obliquely in the front-rear direction from the end shared with the first abutting surface, and extends obliquely downward;

The fourth abutting surface extends vertically upward from the end shared with the third abutting surface;

In an initial state, the storage box is accommodated in the box, and the first sliding wheel is tangent to the third abutting surface and the fourth abutting surface at the same time.

As a further improvement of an embodiment of the present invention, a stopper is provided at the front end of the slideway to stop the first sliding wheel from sliding out of the slideway.

As a further improvement of an embodiment of the present invention, the stopper includes: a second rotating shaft, and a second sliding wheel sheathed on the second rotating shaft, and the outer contour of the second sliding wheel is set as Conical frustum shape, the larger end of the axial section is arranged near the inner side of the slideway.

As a further improvement of an embodiment of the present invention, the slide bar has a lower rail abutment surface that cooperates with the second sliding wheel, and the lower rail abutment surface is set as an inclined surface extending from the storage box up and down;

During the drawing process of the storage box, the edges of the axial sections of the second sliding wheels are always tangent to the abutting surface of the lower rail.

As a further improvement of an embodiment of the present invention, the abutment surface of the lower rail includes:

a first abutment surface, the first abutment surface has an end disposed adjacent to the rear wall of the box and a front end disposed opposite to the end;

The second abutting surface extending from the front end of the first abutting surface, the third abutting surface extending from the other end of the second abutting surface, and the fourth abutting surface extending from the other end of the third abutting surface , and a fifth abutting surface extending from an end of the first abutting surface;

The first abutting surface smoothly extends from the front and rear horizontal directions;

The second abutting surface extends obliquely in the front-rear direction from the end shared with the first abutting surface, and extends obliquely upward;

The third abutting surface is an arc-shaped surface. In the initial state, the storage box is accommodated in the box, and the second sliding wheel is tangent to the second abutting surface and the third abutting surface at the same time. ;

The fourth abutting surface is a right-angle connecting surface, which is used to prevent the second sliding wheel from sliding out of the predetermined path of the sliding bar;

The fifth abutting surface extends obliquely in the front-rear direction from the end shared with the first abutting surface, and extends obliquely downward;

Wherein, when the second sliding wheel is simultaneously tangent to the first abutting surface and the fifth abutting surface, the storage box is pulled out from the box to a maximum state.

Compared with the prior art, the technical effect of the present invention is: the refrigerator of the present invention, by setting the sliding rollers of the slideway and the slide bar arranged between the storage box and the box body into a truncated conical shape, the storage box During the pulling process of the body, under the action of gravity, the center of gravity of the storage box is automatically aligned with the middle position of the slideway, and the artificial force generated during pushing and pulling will be offset by the reaction force generated by the sliding wheel and its matching slideway and slide bar , to avoid the unsmooth sliding phenomenon caused by the left and right shaking of the storage box when pushing and pulling. At the same time, the invention reduces the gap control requirements between the storage box and the box body, and can reduce the defective rate of the product. The invention is simple and easy to implement , which is conducive to the improvement of production efficiency.

Description of drawings

Fig. 1 is a partial perspective view of the refrigerator of the present invention;

Fig. 2 is a perspective view of the storage box in Fig. 1 when it is pulled out.

Fig. 3 is a partially exploded schematic view of the refrigerator according to the first embodiment of the present invention;

Fig. 4A is a schematic structural view of the first sliding wheel in Fig. 3;

Fig. 4B is a schematic structural view of the slideway in Fig. 3;

Fig. 4C is a schematic structural view of the storage box in Fig. 3;

Fig. 4D is a schematic cross-sectional structure diagram of the refrigerator according to the first embodiment of the present invention along the direction A-A in Fig. 1 .

Fig. 5 is a partially exploded schematic diagram of a refrigerator according to a second embodiment of the present invention;

Fig. 6A is a schematic structural view of the pulley block in Fig. 5;

Fig. 6B is a schematic structural view of the slideway in Fig. 5;

Fig. 6C is a schematic structural view of the storage box in Fig. 5;

Fig. 6D is a schematic cross-sectional structure diagram of the refrigerator according to the second embodiment of the present invention along the direction A-A in Fig. 1 .

Fig. 7 is a partially exploded schematic diagram of a refrigerator according to a third embodiment of the present invention;

Fig. 8A is a schematic diagram of the exploded structure of the roller and the roller seat in Fig. 7;

Fig. 8B is a schematic structural view of the slideway in Fig. 7;

Fig. 8C is a schematic structural view of the storage box in Fig. 7;

Fig. 8D is a schematic cross-sectional structure diagram of the refrigerator according to the third embodiment of the present invention along the direction A-A in Fig. 1 .

Detailed ways

The present invention will be described in detail below in conjunction with various embodiments shown in the drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the protection scope of the present invention.

It should be noted that, in each of the following embodiments, the "front", "rear", "upper", "lower", "left" and "right" do not represent absolute distinctions in structure or function, but only is for the clarity and convenience of description; and, in different embodiments, the same symbols or symbols may be used, which do not represent any structural or functional connections;

In addition, there are multiple embodiments in the following embodiments. In multiple embodiments, components with the same structure are represented by unified characters and the same symbols. For different components, they may also be expressed with the same characters, but all Different symbols will be used to distinguish them, so as to make the solution of the present invention clearly expressed.

The refrigerator of the present invention includes a box body and a storage box installed in the box body, and a slideway and a slide bar that cooperate with each other are arranged between the inner side wall of the box body and the outer side wall of the storage box, and are connected with the storage box. The rotating shaft provided on the same side of the sliding bar, and the sliding wheel or pulley block or roller sleeved on the rotating shaft, the sliding bar, sliding wheel or pulley block cooperate with the slideway to drive the storage The box is pulled back and forth in the box; preferably, a stopper is provided at the front end of the slideway (near the opening side) to stop the sliding wheel or the pulley block from sliding out of the slideway, correspondingly Yes, the stopper can also be made of sliding wheels or pulley blocks or rollers, which will be described in detail below.

Correspondingly, the slideway is arranged on one of the outer side wall of the storage box and the inner side wall of the box body, and the slide bar is arranged on the outer side wall of the storage box and the inner side wall of the box body. Firstly, in the specific embodiment of the present invention, for the convenience of description, only the slideway is provided on the inner side wall of the box body, and the slide bar is provided on the outer side wall of the storage box as an example for specific description.

Referring to FIGS. 1 to 2 , the refrigerator of the present invention includes a box body 10 and a storage box 20 installed in the box body 10 . The box body 10 includes an opening side for setting a refrigerator door (not shown), a left side wall 11 and a right side wall 12 respectively arranged on both sides of the opening side, and a side wall connecting the left side wall 11 and the right side wall. 12 and a rear wall 13 opposite to the opening side.

The left side wall 11 and the right side wall 12 of the box body 10 are respectively fixed with slideways 30, and the two outer sidewalls of the storage box 20 are correspondingly provided with the slideway 30 to drive the The storage box 20 is a slide bar 40 drawn back and forth in the box body 10 .

3 to 4A, 4B, 4C, and 4D, the refrigerator according to the first embodiment of the present invention further includes: a first rotating shaft 51 disposed on the same side as the slide bar 40 , and sleeved on On the first rotating shaft 51 and in the process of pulling the storage box along the box body, the first sliding wheel 52 that rotates with the first rotating shaft 51 as a fulcrum, the outer contour of the first sliding wheel 52 is set as a cone Table shape.

In a specific embodiment of the present invention, the storage box 20 is a container with an upper opening and four vertical sides with frames 21 for storing items. The sliding bar 40 and the first rotating shaft 51 are disposed on the outer sidewalls of the two opposite frames 21 of the storage box 20 .

In this embodiment, the first rotating shaft 51 (not specifically shown) is screw-shaped, including a nut, a smooth screw extending vertically from the center of the nut, and a helical end formed at the end of the screw away from the nut. , the side wall of the storage box 20 or the corresponding position of the slide bar 40 is provided with a screw hole matching the helical end of the first rotating shaft 51; the diameter of the shaft center hole of the first sliding wheel is equal to the The outer diameter of the screw, during the installation process, the first sliding wheel 52 is first sleeved on the smooth screw of the first rotating shaft 51, and then its helical end is fitted into the screw hole and passed through the screw cap. Matching, the first rotating shaft 51 is movably fixed on the side wall of the storage box 20 .

Preferably, the sliding rod 40 has an end disposed close to the rear wall of the storage box and a front end disposed opposite to the end; the first rotating shaft 51 is disposed at the end of the sliding rod 40 .

Preferably, the larger end of the axial cross-section of the first sliding wheel 52 is arranged close to the storage box 20, so as to facilitate installation and facilitate the setting of the specific structures of the slideway 30 and the slide bar 40. The following content will will be described in detail.

In a preferred embodiment of the present invention, in order to ensure that the storage box 20 better cooperates with the movement of the first sliding wheel 52 during the pulling process, the slideway 30 has an upper track that cooperates with the first sliding wheel 52 and the lower rail, the upper rail and the lower rail respectively have an upper rail abutting surface 31 and a lower rail abutting surface 32 arranged adjacent to the first sliding wheel 52 .

Preferably, at least when the upper rail and the lower rail are pulled out of the storage box, the upper rail abutment surface 31 and the lower rail abutment surface 32 that are in contact with the first sliding wheel 52 are set to extend from the storage box up and down. during the pulling process of the storage box, the edges of each axial section of the first sliding wheel 52 are segmented and continuously tangent to the upper rail abutting surface 31 and the lower rail abutting surface 32 .

Preferably, in order to facilitate the manufacturing process, the upper rail abutting surface 31 and the lower rail abutting surface 32 are entirely set as inclined surfaces extending from the storage box up and down.

In a specific embodiment of the present invention, the inclination angle of the above-mentioned inclined surface ranges from 10 degrees to 30 degrees, for example, 20 degrees.

In the refrigerator of the first embodiment, the first rotating shaft 51 is arranged horizontally, and the included angle between the side wall of the first sliding wheel and the first rotating shaft 51 is set to be the same as the inclination angle of the above-mentioned inclined surface.

In a preferred embodiment of the present invention, the lower rail abutment surface 32 includes: a first abutment surface 321, the first abutment surface 321 has an end disposed adjacent to the rear wall of the box body and opposite to the end The front end; the second abutting surface 322 extending from the end of the first abutting surface 321, the third abutting surface 323 extending from the other end of the second abutting surface 322 and the third abutting surface from the third abutting surface The fourth abutting surface 324 extending from the other end of 323; the first abutting surface 321 and the third abutting surface 323 both extend smoothly from the front and rear horizontal directions; the second abutting surface 322 is from the first abutting surface The common end of 321 begins to extend obliquely in the front and rear direction, and extends towards the obliquely downward direction; the fourth abutment surface 324 extends vertically upward from the end common to the third abutment surface 323; in the initial state, the storage box 20 Accommodated in the box body 10 , the first sliding wheel 52 is tangent to the third abutting surface 323 and the fourth abutting surface 324 at the same time.

In a preferred embodiment of the present invention, the front end of the slideway 30 (near the opening side) is also provided with a stopper to stop the first sliding wheel 52 from sliding out of the slideway 30, and the stopper The components include: a second rotating shaft 53, and a second sliding wheel 54 sleeved on the second rotating shaft 53. In this embodiment, the structure of the second sliding wheel 54 is the same as that of the first sliding wheel 52. Similarly, the outer contour of the second sliding wheel 54 is also set in the shape of a truncated cone, and the larger end of the axial section is set close to the inner side of the slideway 30 .

Of course, the first rotating shaft 51 and the second rotating shaft 53 can also be sleeved with parts such as gaskets (not marked), so as to fix the positions of the first sliding wheel 52 and the second sliding wheel 54, I won't go into details here.

In this specific embodiment, the second rotating shaft 53 and the second sliding wheel 54 are fitted on the front end of the lower track of the slideway 30, and the front end of the lower track of the slideway 30 is provided with a receiving hole (not marked) , the second sliding wheel 54 is sheathed on the second rotating shaft 53, and then it is integrally inserted into the accommodating hole through the second rotating shaft 53 to interfere with the second rotating shaft 53. The positions of the shaft 53 and the second sliding wheel 54 are fixed.

Preferably, the slide bar 40 has a lower rail abutment surface 41 cooperating with the second sliding wheel 54, and the lower rail abutment surface 41 is set as an inclined surface extending from the storage box up and down; the storage box During the pulling process of the object box, the edges of each axial section of the second sliding wheel 54 are always tangent to the lower track abutting surface 41 .

In this specific example, the lower rail abutment surface 41 includes: a first abutment surface 411, the first abutment surface 411 has an end disposed adjacent to the rear wall of the box body 10 and an end disposed opposite to the end. front end; the second abutting surface 412 extending from the front end of the first abutting surface 411, the third abutting surface 413 extending from the other end of the second abutting surface 412, and the third abutting surface 413 extending from the other end of the third abutting surface 413 The extended fourth abutting surface 414, and the fifth abutting surface 415 extending from the end of the first abutting surface 411; the first abutting surface 411 extends smoothly from the front and rear horizontal direction; the second abutting surface The surface 412 extends obliquely in the front-rear direction from the end shared with the first abutting surface 411, and extends obliquely upward; the third abutting surface 413 is an arc-shaped surface. In the initial state, the storage box 20 Placed in the box body 10, the second sliding wheel 54 is tangent to the second abutment surface 412 and the third abutment surface 413 at the same time; the fourth abutment surface 414 is a right-angled connection surface, used To prevent the second sliding wheel 54 from slipping out of the predetermined path of the sliding bar 40; the fifth abutting surface 415 extends obliquely in the front-back direction from the end shared with the first abutting surface 411, and extends obliquely downward; Wherein, when the second sliding wheel 54 is tangent to the first abutting surface 411 and the fifth abutting surface 415 at the same time, the storage box 20 is pulled out from the box body 10 to a maximum state.

In the refrigerator according to the first embodiment of the present invention, in the initial state, the storage box 20 is accommodated in the box body 10, and the first sliding wheel 52 is tangent to the third abutment surface 323 and the fourth abutment surface at the same time. The holding surface 324 , the second sliding wheel 54 is tangent to the second abutting surface 412 and the third abutting surface 413 at the same time.

When the storage box 20 is pulled out from the box body 10, the first sliding wheel 52 slides forward along the slideway 30, and at the same time, the second sliding wheel 54 slides backward along the sliding bar 40, The first sliding wheel 52 is sequentially tangent to the second abutting surface 322 and the first abutting surface 321. After sliding over the first abutting surface 321 for a certain distance, the front end of the storage box 20 will be under the action of its own weight. Tilting downward, at the same time, the second sliding wheel 54 continues to slide forward tangent to the upper rail abutting surface 31 .

Correspondingly, when the storage box 20 is pulled out from the box body 10, the second sliding wheel 54 is sequentially tangent to the second abutting surface 412 and the first abutting surface 411; When the fifth abutting surface 415 is described, the fifth abutting surface 415 prevents the second sliding wheel 54 from continuing to slide relative to the rear. At the same time, the second sliding wheel 54 abuts against the first sliding wheel 52 and blocks the first sliding wheel 52 continues to slide relatively forward. At this time, the storage box 20 is pulled out from the box body 10 to the maximum state.

The process of pushing the storage box 20 into the box body 10 from the outside of the box body 10 is just the opposite of the above-mentioned process, and its operating principle is similar, so the process will not be further described in detail.

In the refrigerator provided in the first embodiment of the present invention, during the sliding process of the first sliding wheel and the second sliding wheel relative to the slideway and the sliding bar, since the first sliding wheel and the second sliding wheel are both set in the shape of a truncated cone, At the same time, the matching sliding surface is set to match the slope of its operation, so that when the storage box is pulled along the box, under the action of gravity, the center of gravity of the storage box is automatically aligned with the middle position of the slideway. The generated force will be offset by the reaction force generated by the sliding wheel and the slideway and slide bar matched with it, so as to avoid the phenomenon of unsmooth sliding caused by the left and right shaking of the storage box when pushing and pulling. At the same time, the present invention reduces the The gap control requirements between the box and the box body can reduce the defect rate of the product. The invention is simple and easy to implement, and is beneficial to the improvement of production efficiency.

5, 6A, 6B, 6C, and 6D, the refrigerator provided by the second embodiment of the present invention further includes: a first pulley shaft 61 provided on the same side as the slide bar 40, and a first pulley shaft 61 sleeved on the On the first pulley shaft 61 and in the process of pulling the storage box 20 along the box body, the first pulley group 62 that rotates with the first pulley shaft 61 as a fulcrum, the first pulley group 62 includes: sleeved on the The first pulley shaft 61, and at least two pulleys arranged coaxially, the diameters of adjacent pulleys are different.

In the specific embodiment of the present invention, when a plurality of pulleys are coaxially arranged, it is only necessary to ensure that the diameters of adjacent pulleys are different, that is, the plurality of pulleys can be arranged in order from small to large, or the first small, the second The second big and the third small are arranged in a way, so I won't go into details here;

In a preferred embodiment of the present invention, the diameters of the plurality of pulleys increase sequentially along the axial direction, and the difference between the diameters of adjacent pulleys is the same.

In a specific implementation of the present invention, the number of pulleys in the first pulley set 62 is set to two, which are the first pulley 621 and the second pulley 622 respectively, and the diameter of the first pulley 621 is larger than the diameter of the second pulley 622 .

In this specific embodiment, the storage box 20 is a container with an upper opening and four vertical sides with frames 21 for storing items. The sliding rod 40 and the first pulley shaft 61 are disposed on the outer sidewalls of the two opposite frames 21 of the storage box 20 . The slide bar 40 has an end adjacent to the rear wall of the storage box 20 and a front end opposite to the end; the first pulley shaft 61 is located at the end of the slide bar 40 .

In this embodiment, the structure and installation position of the first pulley shaft 61 are the same as the structure and installation position of the first rotating shaft 51 in the first embodiment, so details will not be repeated here.

Preferably, the first pulley 621 is arranged close to the storage box 20 , so as to facilitate installation and setting of specific structures of the slideway 30 and the slide bar 40 , which will be described in detail below.

In a preferred embodiment of the present invention, in order to ensure that the storage box 20 better cooperates with the movement of the first pulley set 62 during the pulling process, the slideway 30 has an upper track and a lower track that cooperate with the first pulley set 62 . The track, the upper track and the lower track respectively have an upper track abutment surface 31 and a lower track abutment surface 32 disposed adjacent to the first pulley block 62 .

In the specific embodiment of the present invention, the slideway 30 has two structures, and in one embodiment, the structure of the slideway 30 is the same as that of the first embodiment, that is, at least the upper track and the lower track are in storage. During the pulling process of the object box 20, the upper rail abutment surface 31 and the lower rail abutment surface 32 in contact with the first pulley block 62 are set as inclined surfaces extending from the storage box 20 up and down; During the process, the edges of each axial section of the first pulley set 62 are segmented and continuously tangent to the upper rail abutting surface 31 and the lower rail abutting surface 32 . Preferably, in order to facilitate the manufacturing process, the upper rail abutting surface 31 and the lower rail abutting surface 32 are entirely set as inclined surfaces extending from the storage box up and down. The difference between this method and the slideway in the refrigerator in the first embodiment above is that the cooperation relationship between the first pulley set 62 and the slideway 30, in this embodiment, during the drawing process of the storage box 20, only There is an edge segment of an axial section that is continuous and tangent to the upper rail abutment surface 31 and the lower rail abutment surface 32, that is, the edge segment of the axial section adjacent to the first pulley 621 and the second pulley 622 is continuous and Tangent to the upper rail abutment surface 31 and the lower rail abutment surface 32 .

In a specific embodiment of the present invention, the inclination angle of the above-mentioned inclined surface ranges from 10 degrees to 30 degrees, for example, 20 degrees. In the refrigerator of the second embodiment, the first pulley shaft 61 is arranged horizontally, and the angle between the edge line of the axial section of the first pulley 621 and the second pulley 622 on the same side and the first pulley shaft 61 is equal to The inclination angles of the above-mentioned inclined surfaces are set to be the same.

In another embodiment, (this method is not shown in the figure) both the upper rail abutment surface and the lower rail abutment surface are set as stepped surfaces formed from the upper and lower directions of the storage box; , each pulley is segmented and continuously tangent to the abutment surface of the upper rail and the abutment surface of the lower rail. In this embodiment, the height difference of the stepped surface is equal to the radius difference between the corresponding adjacent pulleys.

Correspondingly, in the above several embodiments, the lower rail abutting surface 32 includes: a first abutting surface 321, the first abutting surface 321 has an end disposed adjacent to the rear wall of the box body and is connected to the The front ends oppositely arranged; the second abutting surface 322 extending from the end of the first abutting surface 321, the third abutting surface 323 extending from the other end of the second abutting surface 322 and the third abutting surface 323 extending from the third abutting surface 321 The fourth abutting surface 324 extending from the other end of the abutting surface 323; the first abutting surface 321 and the third abutting surface 323 both smoothly extend from the front and rear horizontal directions; the second abutting surface 322 is free from the first abutting surface The common end of the abutting surface 321 starts to extend obliquely in the forward and backward direction, and extends obliquely downward; the fourth abutting surface 324 extends vertically upward from the common end with the third abutting surface 323; in the initial state, the storage The object box 20 is accommodated in the box body 10 , and each pulley in the first pulley set 62 is tangent to the third abutting surface 323 and the fourth abutting surface 324 at the same time.

In a preferred embodiment of the present invention, a stopper is provided at the front end (near the opening side) of the slideway 30 to stop the first pulley set 62 from sliding out of the slideway 30 .

In practical application, there are various structures of the stopper, for example: a regular-shaped protrusion, a circular protrusion, a triangular protrusion, a truss protrusion, and the second stopper in the refrigerator of the above-mentioned first embodiment. The structure of the sliding wheel; it will not be described in detail here. In the specific embodiment of the present invention, the stopper includes: a second pulley shaft 63, and a second pulley group 64 sleeved on the second pulley shaft 63, the structure of the second pulley group 64 is the same as that of the first pulley group 62 have the same structure, that is: the second pulley block 64 includes: at least two pulleys that are sleeved on the second pulley shaft 63 and coaxially arranged, and the diameters of adjacent pulleys are different; the second pulley shaft The structure and fixing method of 63 may be the same as that of the second rotating shaft 53 or the first pulley shaft 61 , and will not be described in detail here.

In a specific embodiment of the present invention, the second pulley set also includes two pulleys, namely a third pulley 641 and a fourth pulley 642 , and the third pulley 641 is arranged close to the side wall of the storage box 20 .

Of course, the first pulley shaft 61 and the second pulley shaft 63 can also be sleeved with parts such as gaskets (not marked), so as to fix the positions of the first pulley block 62 and the second pulley block 64. This will not be described in detail.

Correspondingly, the slide bar 40 has two structures, one of which is the same as the slide bar structure in the refrigerator of the first embodiment above, that is, the slide bar 40 includes: The lower track abutment surface 41, the lower track abutment surface 41 is set as an inclined surface extending from the storage box up and down; during the drawing process of the storage box, there is only one edge of the axial section in each pulley Continuously tangent to the abutment surface of the lower rail; in another embodiment (this method is not shown), the abutment surface of the lower rail is set as a stepped surface formed from the up and down direction of the storage box; the storage box During the drawing process of the box, each pulley is segmented and continuously tangent to the abutting surface of the lower rail.

In this specific example, on the basis of the above structure, the lower rail abutment surface 41 includes: a first abutment surface 411, the first abutment surface 411 has an end disposed adjacent to the rear wall of the box body 10 and is connected to The front end opposite to the end; the second abutting surface 412 extending from the front end of the first abutting surface 411, the third abutting surface 413 extending from the other end of the second abutting surface 412, and the third abutting surface 413 extending from the third abutting surface 412 The fourth abutting surface 414 extending from the other end of the abutting surface 413, and the fifth abutting surface 415 extending from the end of the first abutting surface 411; the first abutting surface 411 smoothly extends from the front and rear horizontal direction; The second abutting surface 412 extends obliquely in the front-rear direction from the end shared with the first abutting surface 411, and extends obliquely upward; the third abutting surface 413 is an arc-shaped surface. , the storage box 20 is accommodated in the box body 10, and each pulley in the second wheel set 64 is simultaneously tangent to the second abutting surface 412 and the third abutting surface 413; The fourth abutting surface 414 is a right-angle connecting surface, which is used to prevent any pulley in the second pulley set 64 from slipping out of the predetermined path of the slide bar 40; The common end begins to extend obliquely in the front-rear direction, and extends toward the obliquely downward direction; wherein, when each pulley in the second wheel set 64 is simultaneously tangent to the first abutting surface 411 and the fifth abutting surface When contacting the surface 415, the storage box 20 is pulled out from the box body 10 to the maximum state.

In the refrigerator according to the second embodiment of the present invention, in the initial state, the storage box 20 is accommodated in the box body 10, and each pulley in the first pulley set 62 is simultaneously tangent to the third abutting surface 323 and The fourth abutting surface 324 and each pulley in the second pulley set 64 are tangent to the second abutting surface 412 and the third abutting surface 413 at the same time.

When the storage box 20 is pulled out from the box body 10, each pulley in the first pulley set slides forward along the slideway 30 respectively, the linear speed of each pulley is the same, and the rotational speed is different. Each pulley in the second pulley set 64 slides backwards along the slide bar 40 relative to each other, and each pulley in the first pulley set 62 is respectively and sequentially tangent to the second abutting surface 322, the first abutting surface 321, After sliding over the first abutting surface 321 for a certain distance, the front end of the storage box 20 will be inclined downward under the action of its own weight. The holding surface 31 continues to slide forward.

Correspondingly, when the storage box 20 is pulled out from the box body 10, each pulley in the second pulley set 64 is respectively tangent to the second abutting surface 412 and the first abutting surface 411 in sequence; when it reaches And when it is tangent to the fifth abutting surface 415, the fifth abutting surface 415 prevents each pulley in the second pulley set 64 from continuing to slide relatively backwards, and at the same time, each pulley in the second pulley set 64 is respectively connected to Each pulley in the first set of pulleys 62 abuts against each other correspondingly, and blocks each pulley in the first set of pulleys 62 to continue to slide relatively forward respectively. state.

The process of pushing the storage box 20 into the box body 10 from the outside of the box body 10 is just the opposite of the above-mentioned process, and its operating principle is similar, so the process will not be further described in detail.

In the refrigerator provided in the second embodiment of the present invention, when the first pulley set and the second pulley set are sliding relative to the slideway and the slide bar, since the first pulley set and the second pulley set are both composed of at least two coaxially arranged pulleys , and the diameters of adjacent pulleys are different; when the storage box is pulled along the box, under the action of gravity, the center of gravity of the storage box is automatically aligned with the middle position of the slideway, and the artificial force generated during pushing and pulling will be The reaction force generated by the sliding wheel and the slideway and the sliding rod matched with it is offset, so as to avoid the unsmooth sliding phenomenon caused by the left and right shaking of the storage box when pushing and pulling. At the same time, the present invention reduces the distance between the storage box and the box The gap control requirement can reduce the defect rate of the product, the invention is simple and easy to implement, and is beneficial to the improvement of the production efficiency.

7, 8A, 8B, 8C, and 8D, the refrigerator according to the third embodiment of the present invention further includes: a first roller shaft 71 arranged on the same side as the slide bar 40, and a first roller shaft 71 sleeved on the slide bar 40 The first roller 72 is on the first roller shaft 71 and rotates with the first roller shaft 71 as a fulcrum when the storage box is drawn along the box body. Wherein, the slideway 30 has a lower track matched with the first roller 72, and the lower track has a lower track abutting surface 32 arranged adjacent to the first roller 72; 20 during the pulling process, the lower rail abutment surface 32 in contact with the first roller 72 is set as an inclined surface extending from the storage box 20 up and down; the first roller shaft 71 is parallel to the lower rail abutment surface 32 The inclined surface is set; when the storage box 20 is drawn in the horizontal direction, the first roller 72 is continuously tangent to the inclined surface formed on the lower rail abutting surface 32 .

In a specific embodiment of the present invention, the storage box 20 is a container with an upper opening and four vertical sides with frames 21 for storing items. The sliding bar 40 and the first roller shaft 71 are disposed on the outer side walls of the two opposite frames 21 of the storage box 20 .

Preferably, the sliding rod 40 has an end disposed close to the rear wall of the storage box and a front end disposed opposite to the end; the first roller shaft 71 is disposed at the end of the sliding rod 40 .

In the specific embodiment of the present invention, the refrigerator also includes: a first roller frame 73 used in conjunction with the first roller 72; a first groove 43 is set at the end of the slider 40, and A first accommodating portion 431 is provided on one side wall, and the first roller frame 73 includes: a supporting body 731 fitted in the first groove 43, and arranged on the outer side wall of the supporting body, And match the fitting part 732 provided by the first accommodating part 431, the second groove 7311 opened from the supporting body 731 toward the lower rail abutting surface 32 of the slideway, and the second groove 7311 from the second The side wall of the groove 7311 close to the side wall of the storage box and the clamping hole 7312 symmetrically opened on the corresponding side wall, the diameter of the clamping hole 7312 is equal to the axial cross-sectional diameter of the first roller shaft 71; The first roller shaft 71 is erected in two symmetrically disposed clamping holes 7312 , and a part of the first roller shaft 71 is movably disposed in the second groove 7311 .

Specifically, the first accommodating portion 431 is a through hole or groove opened on the side wall of the first groove 43, and the fitting portion 732 is a protrusion provided on the outer wall of the supporting body 731. platform; any one of the clamping holes 7312 is also provided with an opening 7313 near the top wall side of the second groove 7311, so as to communicate with the clamping hole 7312 and the top wall of the second groove 7311; the opening The width of 7313 close to the clamping hole 7312 is smaller than the diameter of the clamping hole 7312 , and the width of the opening 7313 close to the top wall of the second groove 7311 is greater than or equal to the diameter of the clamping hole 7312 . In this way, during the installation process, the first roller 72 is first sleeved on the first roller shaft 71, and then the first roller shaft 71 interferes through the opening 7313 and fits into the clamping hole 7312. This structure It is convenient to install and fix the first roller 72 .

Preferably, in order to facilitate the manufacturing process, the entire lower rail abutment surface 32 is set as an inclined surface extending from the storage box up and down. In a specific embodiment of the present invention, the inclination angle of the above-mentioned inclined surface ranges from 10 degrees to 30 degrees, for example, 20 degrees.

In a preferred embodiment of the present invention, the lower rail abutting surface 32 of the slideway 30 includes: a first abutting surface 321, the first abutting surface 321 has an end disposed adjacent to the rear wall of the box body and is connected to the The front end opposite to the end; the second abutting surface 322 extending from the end of the first abutting surface 321, the third abutting surface 323 extending from the other end of the second abutting surface 322 and the third abutting surface 323 extending from the first abutting surface 321 The fourth abutting surface 324 extending from the other end of the three abutting surfaces 323; the first abutting surface 321 and the third abutting surface 323 both smoothly extend from the front and rear horizontal directions; A common end of the abutting surface 321 starts to extend obliquely in the forward and backward direction, and extends obliquely downward; the fourth abutting surface 324 extends vertically upward from the common end with the third abutting surface 323; in the initial state, The storage box 20 is accommodated in the box body 10 , and the first roller 72 is tangent to the third abutting surface 323 and the fourth abutting surface 324 at the same time.

In a preferred embodiment of the present invention, the front end of the slideway 30 (near the opening side) is also provided with a stopper to stop the first roller 72 from sliding out of the slideway 30, and the stopper It includes: a second roller shaft 74 , and a second roller 75 sleeved on the second roller shaft 74 .

Preferably, the slide bar 40 has a lower rail abutting surface 41 that cooperates with the second roller 75, and the lower rail abutting surface 41 is set as an inclined surface extending from the storage box up and down; the second The roller shaft 74 is arranged parallel to the inclined surface of the lower rail abutment surface 41; during the pulling process of the storage box 20, the continuous tangency of the second roller 75 is tangent to the inclination formed on the lower rail abutment surface 41. noodle.

In addition, the slideway 30 defines a third groove 33 corresponding to the position of the stopper, and a second accommodating portion 331 is formed on one side wall of the third groove 33. Correspondingly, the stopper The stopper may also include: a second roller frame 76 used in conjunction with the second roller 75, and the second roller frame 76 is fitted in the third groove 33; in this embodiment, the first Two roller shaft 74, the second roller 75, the second roller frame 76, the structure of the 3rd groove 33 and the mode of installation fit respectively with the first roller shaft 71, the first roller 72, the first roller frame 73, the first groove 43 is the same, so it will not be described in detail.

Of course, the first roller shaft 71 and the second roller shaft 74 can also be sleeved with parts such as gaskets (not marked), so as to fix the positions of the first roller 72 and the second roller 75, here Do not go into details.

In this specific embodiment, the second roller shaft 74 , the second roller 75 , and the second roller frame 76 are arranged at the front end of the lower track of the slideway 30 .

In this specific example, the lower rail abutment surface 41 includes: a first abutment surface 411, the first abutment surface 411 has an end disposed adjacent to the rear wall of the box body 10 and an end disposed opposite to the end. front end; the second abutting surface 412 extending from the front end of the first abutting surface 411, the third abutting surface 413 extending from the other end of the second abutting surface 412, and the third abutting surface 413 extending from the other end of the third abutting surface 413 The extended fourth abutting surface 414, and the fifth abutting surface 415 extending from the end of the first abutting surface 411; the first abutting surface 411 extends smoothly from the front and rear horizontal direction; the second abutting surface The surface 412 extends obliquely in the front-rear direction from the end shared with the first abutting surface 411, and extends obliquely upward; the third abutting surface 413 is an arc-shaped surface. In the initial state, the storage box 20 Placed in the box 10, the second roller 75 is tangent to the second abutment surface 412 and the third abutment surface 413 at the same time; the fourth abutment surface 414 is a right-angle connection surface for Prevent the second roller 75 from sliding out of the predetermined path of the slide bar 40; the fifth abutting surface 415 extends obliquely in the front-rear direction from the end shared with the first abutting surface 411, and extends obliquely downward; wherein, When the second roller 75 is tangent to the first abutting surface 411 and the fifth abutting surface 415 at the same time, the storage box 20 is pulled out from the box body 10 to a maximum state.

Preferably, the slideway 30 also has an upper track corresponding to its lower track, the upper track of the slideway has an upper track abutment surface 31 arranged close to the slide bar 40, and the slide bar 40 has an upper track abutment surface 31 set against its lower track. The upper rail abutment surface 41 opposite to the surface 32 is provided with an abutment platform 77 corresponding to the position of the first roller 72 above the upper rail abutment surface 41; in the initial state, the abutment platform 77 and the slideway 30 The upper rail abutting surface 31 of the storage box 20 is separately set. When the storage box 20 is pulled out, its front end is inclined downward under the action of its own weight, and the abutting platform 77 continues to abut against the upper rail abutting surface 31 of the slideway. The first roller 72 is away from the lower rail abutting surface 32 of the slideway 30 .

In the refrigerator according to the third embodiment of the present invention, in the initial state, the storage box 20 is accommodated in the box body 10, and the first roller 72 is tangent to the third abutting surface 323 and the fourth abutting surface at the same time. surface 324 , the second roller 75 is tangent to the second abutting surface 412 and the third abutting surface 413 at the same time.

When the storage box 20 is pulled out from the box body 10, the first roller 72 slides forward along the slideway 30, and at the same time, the second roller 75 slides backward along the slide bar 40, the The first roller 72 is tangent to the second abutting surface 322 and the first abutting surface 321 in sequence. After sliding over the first abutting surface 321 for a certain distance, the front end of the storage box 20 will tilt downward under the action of its own weight. At the same time, the first roller 72 breaks away from the lower rail abutting surface 32 of the slideway, and the abutting platform 77 continues to abut against the upper rail abutting surface 31 of the slideway and continues to slide forward.

Correspondingly, when the storage box 20 is pulled out from the box body 10, the second roller 75 touches the second abutting surface 412 and the first abutting surface 411 sequentially; When the fifth abutting surface 415 is used, the fifth abutting surface 415 prevents the second roller 75 from continuing to slide relatively backward. Sliding, at this time, the storage box 20 is pulled out from the box body 10 to the maximum state.

The process of pushing the storage box 20 into the box body 10 from the outside of the box body 10 is just the opposite of the above-mentioned process, and its operating principle is similar, so the process will not be further described in detail.

In the refrigerator provided in the third embodiment of the present invention, during the sliding process of the first roller and the second roller relative to the slideway and the slide bar, since the matching surface of the slideway and the slide bar is set as an inclined surface extending in the vertical direction, At the same time, the roller shafts corresponding to the rollers matched with the slideway and the slide bar are arranged parallel to the above-mentioned inclined surface, so that when the storage box is pulled along the box body, under the action of gravity, the center of gravity of the storage box Automatically align with the middle position of the slideway, and the artificial force generated when pushing and pulling will be offset by the reaction force generated by the roller and the slideway and slide bar matched with it, so as to avoid the storage box shaking from side to side when pushing and pulling, which will cause the storage box to slide unsmoothly phenomenon, at the same time, the present invention reduces the gap control requirement between the storage box and the box body, can reduce the defective rate of the product, and the present invention is simple and easy to implement, and is conducive to the improvement of production efficiency.

It should be noted that, in the refrigerators in the above three implementation manners, the structure of the stopper and the sliding bar matched with it can be interchanged, and will not be described in detail here.

It should be understood that although this description is described according to implementation modes, not each implementation mode only includes an independent technical solution. The technical solutions in the embodiments can also be properly combined to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions for feasible implementations of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent implementation or implementation that does not depart from the technical spirit of the present invention All changes should be included within the protection scope of the present invention.

Claims (9)

1. A refrigerator, characterized in that: it comprises a box body and a storage box installed in the box body, and a slideway cooperating with each other is provided between the inner side wall of the box body and the outer side wall of the storage box , a slide bar, a first rotating shaft arranged on the same side as the sliding bar, and a first sliding wheel sleeved on the first rotating shaft, the sliding bar, the first sliding wheel and the slideway are mutually cooperate to drive the storage box to be pulled back and forth in the box; Wherein, the outer contour of the first sliding wheel is set in the shape of a truncated cone; The slideway has an upper track and a lower track matched with the first sliding wheel, and the upper track and the lower track respectively have an upper track abutting surface and a lower track abutting surface adjacent to the first sliding wheel; at least the During the drawing process of the upper rail and the lower rail of the storage box, the upper rail abutment surface and the lower rail abutment surface in contact with the first sliding wheel are set as inclined surfaces extending from the storage box up and down; the storage box During the pulling process, the edges of each axial section of the first sliding wheel are evenly segmented and continuously tangent to the upper rail abutting surface and the lower rail abutting surface. 2. The refrigerator according to claim 1, wherein the slideway is fixedly installed on the inner wall of the box body, and the sliding rod and the first rotating shaft are fixedly installed on the outer wall of the storage box superior, The slide bar has an end disposed adjacent to the rear wall of the storage box and a front end disposed opposite to the end; The first rotating shaft is arranged at the end of the sliding rod, and the end with a larger section of the first sliding wheel is arranged close to the storage box. 3 . The refrigerator according to claim 1 , wherein the upper rail abutting surface and the lower rail abutting surface are entirely set as inclined surfaces extending from the storage box up and down. 4 . 4. The refrigerator according to claim 1, characterized in that, during the drawing process of the storage box of the upper track and the lower track, the inclination angle of the abutting surface contacting the first sliding wheel is in the range of 10 degrees to 30 degrees. 5. The refrigerator according to claim 1, wherein the abutting surface of the lower rail comprises: a first abutting surface, the first abutting surface has an end disposed adjacent to the rear wall of the box body and is connected with a front end disposed opposite the end; The second abutting surface extending from the end of the first abutting surface, the third abutting surface extending from the other end of the second abutting surface, and the fourth abutting surface extending from the other end of the third abutting surface holding face; Both the first abutting surface and the third abutting surface smoothly extend from the front and rear horizontal directions; The second abutting surface extends obliquely in the front-rear direction from the end shared with the first abutting surface, and extends obliquely downward; The fourth abutting surface extends vertically upward from the end shared with the third abutting surface; In an initial state, the storage box is accommodated in the box, and the first sliding wheel is tangent to the third abutting surface and the fourth abutting surface at the same time. 6 . The refrigerator according to claim 1 , wherein a stopper is provided at a front end of the slideway to stop the first sliding wheel from sliding out of the slideway. 7. The refrigerator according to claim 6, wherein the stopper comprises: a second rotating shaft, and a second sliding wheel sheathed on the second rotating shaft, the second sliding wheel The outer contour of the utility model is set in the shape of a truncated cone, and the larger end of the axial section is set close to the inner side of the slideway. 8. The refrigerator according to claim 7, characterized in that, The slide bar has a lower rail abutment surface matched with the second sliding wheel, and the lower rail abutment surface is set as an inclined surface extending from the storage box up and down; During the drawing process of the storage box, the edges of the axial sections of the second sliding wheels are always tangent to the abutting surface of the lower rail. 9. The refrigerator according to claim 8, wherein the abutment surface of the lower rail comprises: a first abutment surface, the first abutment surface has an end disposed adjacent to the rear wall of the box and a front end disposed opposite to the end; The second abutting surface extending from the front end of the first abutting surface, the third abutting surface extending from the other end of the second abutting surface, and the fourth abutting surface extending from the other end of the third abutting surface , and a fifth abutting surface extending from an end of the first abutting surface; The first abutting surface smoothly extends from the front and rear horizontal directions; The second abutting surface extends obliquely in the front-rear direction from the end shared with the first abutting surface, and extends obliquely upward; The third abutting surface is an arc-shaped surface. In the initial state, the storage box is accommodated in the box, and the second sliding wheel is tangent to the second abutting surface and the third abutting surface at the same time. ; The fourth abutting surface is a right-angle connecting surface, which is used to prevent the second sliding wheel from sliding out of the predetermined path of the sliding bar; The fifth abutting surface extends obliquely in the front-rear direction from the end shared with the first abutting surface, and extends obliquely downward; Wherein, when the second sliding wheel is simultaneously tangent to the first abutting surface and the fifth abutting surface, the storage box is pulled out from the box to a maximum state.