A flat door guide wheel structure and a cabinet body with the same

Abstract

The application discloses a flat door guide wheel structure and a cabinet body with the same, which comprises a first guide wheel mechanism used for sliding along a first guide rail on the inner side of a flat door body, a second guide wheel mechanism used for sliding along a second guide rail on the upper side wall or the lower side wall of the cabinet body, a first support, one end of the first support being connected with the first guide wheel mechanism, a second support, one end of the second support being hinged with the other end of the first support, and the other end of the second support being hinged with the second guide wheel mechanism, wherein the first support and / or the second support is provided with a limiting structure for limiting the rotating angle of the hinge, so that the maximum angle is kept constant when the first guide wheel mechanism slides and / or the second guide wheel mechanism slides. The application can solve the space occupation problem of the guide wheel in the cabinet, and the limiting structure is arranged at the hinge, so that the guide wheel keeps relatively stable when sliding, and the stability of the flat door body during movement is improved.

Description

Technical Field

[0001] This invention relates to the field of sliding door guide wheel technology, and more particularly to a sliding door guide wheel structure and a cabinet having the same. Background Technology

[0002] Among various cabinet door opening methods, sliding doors are a commonly used and space-efficient option, making them very popular. With sliding doors, all doors lie on the same plane when closed, resulting in excellent sealing and a neat, aesthetically pleasing appearance. When opened, the sliding doors are staggered, requiring specific guidelines for their movement.

[0003] For sliding doors, the sliding action requires pulleys, which are installed at the top and bottom of the door. One pulley guides the door, while the other acts as a weight-bearing mechanism for pushing and pulling. In existing guide pulleys, the connection between the fixing box and the guide rod is movable to prevent jamming. Therefore, when the door is opened, the end with the guide wheel tends to wobble, affecting the user experience and structural stability. Existing patent solutions, such as patent CN111119630A, use two support mechanisms for stable sliding, but these are complex and occupy a significant amount of internal cabinet space, causing some inconvenience for users. Summary of the Invention

[0004] To overcome at least one of the defects described in the prior art, the present invention provides a sliding door guide wheel structure and a cabinet having the same. This solves the problem of space occupation by the guide wheel within the cabinet. Furthermore, a limiting structure is provided at the hinge to restrict the hinge angle, thereby maintaining the relative stability of the first and second support members when the guide wheel slides, thus improving the stability of the sliding door during movement.

[0005] The technical solution adopted by this invention to solve its problem is: A sliding door guide wheel structure includes: a first guide wheel mechanism for sliding along a first guide rail inside the sliding door body; a second guide wheel mechanism for sliding along a second guide rail on the upper or lower side wall of the cabinet body; a first support member, one end of which is connected to the first guide wheel mechanism; and a second support member, one end of which is hinged to the other end of the first support member, and the other end of which is hinged to the second guide wheel mechanism; wherein the first support member and / or the second support member are provided with a limiting structure for limiting the hinge rotation angle, so that the maximum angle between the first support member and the second support member remains constant when the first guide wheel mechanism slides and / or the second guide wheel mechanism slides.

[0006] By adopting the above scheme, when the first guide wheel mechanism and the second guide wheel mechanism slide in the same direction, the rotation between the first support member and the second support member is restricted by the limiting structure, thereby achieving a stable support effect. This ensures that the first guide wheel mechanism and the second guide wheel mechanism do not wobble when sliding, and the overall structure is aesthetically pleasing and occupies less space.

[0007] Furthermore, a flexible structure is provided at the connection point between one end of the first support member and the first guide wheel mechanism. The flexible structure includes a first extension side and a second extension side located on both sides of the hinge. One of the first extension side and the second extension side abuts against the first guide wheel mechanism, and the other side leaves a gap with the first guide wheel mechanism, so that the first support member has space to rotate away from the first guide wheel mechanism.

[0008] By adopting the above solution, the gap allows for a certain amount of rotational fine-tuning space between the first guide wheel mechanism and the first support member, thereby preventing the guide wheel from getting stuck and improving the smoothness of the guide wheel's sliding.

[0009] Furthermore, the limiting structure includes a second limiting structure located at the other end of the first support member or one end of the second support member, the second limiting structure including a third and a fourth extending edge located on both sides of the hinge, and / or, the limiting structure includes a third limiting structure located at the other end of the second support member, the third limiting structure including a fifth and a sixth extending edge located on both sides of the hinge.

[0010] By adopting the above scheme, the rotation angle between the first support member and the second support member can be limited. Therefore, when the first guide wheel mechanism and the second guide wheel mechanism slide to one side, the relative stability between the first support member and the second support member can be maintained, thereby providing a stable support effect.

[0011] Furthermore, the third and fourth extension edges control the maximum rotation angle between the second support member and the first support member to be 90°, and / or the fifth and sixth extension edges control the maximum rotation angle between the second support member and the second guide wheel mechanism to be 90°.

[0012] By adopting the above scheme, it is beneficial to control the maximum rotation range of the hinge between the second support member and the second guide wheel mechanism to 90°, thereby achieving rotational stability between the first support member and the second support member, and between the second support member and the second guide wheel mechanism, thus achieving the folding or stretching effect.

[0013] Furthermore, the second support member and the second guide wheel mechanism are provided with an elastic abutment member. One end of the elastic abutment member is rotatably connected to the second support member, and the other end is rotatably connected to the second guide wheel mechanism. The elastic abutment member is used to provide a supporting force to one end of the second support member to prevent it from rotating in the sliding direction of the second guide wheel mechanism.

[0014] By adopting the above scheme, a certain thrust can be provided to the second support member when the first guide wheel mechanism and the second guide wheel mechanism slide, thereby keeping the hinge angle between the second support member and the second guide wheel mechanism unchanged.

[0015] Furthermore, the elastic abutment includes: a kit housing, one end of which is recessed to form a receiving cavity, and the other end is provided with a first latch, the first latch being rotatably connected to a second guide wheel mechanism; a plug-in member, one end of which is inserted into the receiving cavity, and the other end of which is provided with a second latch, the second latch being rotatably connected to a second support member; and an elastic member, located between the receiving cavity and the plug-in member, for providing elasticity to both parties.

[0016] By adopting the above solution, stable elasticity can be provided on both sides.

[0017] Furthermore, an assembly clamp is provided between the second support member and the second guide wheel mechanism. The assembly clamp has an assembly cavity, and the other end of the second support member and the elastic abutment member are located in the assembly cavity.

[0018] By adopting the above scheme, the assembly clamp is used to limit the elastic force direction of the elastic abutment and the hinge stability between the second support and the second guide wheel mechanism, so as to avoid excessive force during rotation that is perpendicular to the elastic force direction of the elastic abutment.

[0019] Furthermore, both the first guide wheel mechanism and the second guide wheel mechanism include: a pulley base plate; at least two rollers, the rollers being mounted on the pulley base plate and the roller axles being perpendicular to the pulley base plate, and the two or more rollers having relatively stable guide surfaces for rolling along the side wall of the first guide rail or the second guide rail.

[0020] By adopting the above scheme, and by designing the first guide wheel mechanism and the second guide wheel mechanism to have two guide surfaces, the first guide wheel mechanism and the second guide wheel mechanism can slide more stably and have more uniform force when sliding within the first guide rail and the second guide rail, thus resulting in a smoother sliding effect.

[0021] A cabinet with a sliding door guide wheel structure includes a cabinet body, a sliding door, a first guide rail, a second guide rail, a load-bearing guide rail, a load-bearing pulley assembly, and the sliding door guide wheel structure. The load-bearing guide rail is mounted on the bottom of the cabinet body. The first guide rail is installed on the upper side wall inside the cabinet body. The second guide rail is installed above the inner side wall of the sliding door. The lower part of the sliding door is connected to the load-bearing pulley assembly. The load-bearing pulley assembly slides along the load-bearing guide rail to drive the sliding door to move. The first support member and the second support member maintain a certain angle and slide along the first guide rail and / or the second guide rail to provide sliding guidance for the upper part of the sliding door.

[0022] By adopting the above scheme, the angle between the first support and the second support can be kept stable when the sliding door moves horizontally during opening, thereby providing stable support and guidance for the sliding door, greatly improving the opening stability of the sliding door and reducing the shaking of the sliding door itself.

[0023] Furthermore, an adjustable stop is provided near one end of the second guide rail. A retraction space for accommodating the second support member is reserved between the adjustable stop and the end. The adjustable stop is used to control the maximum sliding distance of the second guide wheel mechanism in the second guide rail, so that the sliding distance of the sliding door when it opens or closes is equal to the sum of the sliding distance of the first guide wheel mechanism in the first guide rail, the sliding distance of the first guide wheel mechanism in the second guide rail, and the arc length of the rotation between the second support member and the second guide wheel mechanism. When the sliding door is retracted by the load-bearing pulley group, the sliding door retracts into the cabinet so that the second support member rotates into the retraction space and aligns with the second guide rail.

[0024] By adopting the above solution, the folding and retraction effect of the second support can be achieved.

[0025] In summary, the sliding door guide wheel structure and the cabinet having it provided by the present invention have the following technical effects: 1. By setting a limiting structure at the end junction of the first support member and / or the end junction of the second support member, the rotation angle between the first support member and the second support member can be kept constant when the first guide wheel mechanism and / or the second guide wheel mechanism slide, thereby improving the support stability of the first support member and the second support member on the sliding door body and reducing the shaking of the sliding door body during the opening process; 2. By setting an elastic abutment between the second support member and the second guide wheel mechanism, a certain abutment force can be provided to the second support member to prevent the second support member from contracting and rotating during the sliding process, thereby improving the support stability of the second support member when the sliding door is closed. 3. The connection structure between the first and second support components is simple, occupies little space inside the cabinet, and has a small proportion exposed to the user's field of vision, which greatly improves the user's experience. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the cabinet's three-dimensional structure according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the bottom of the cabinet according to an embodiment of the present invention; Figure 3 This is a three-dimensional structural diagram of the guide wheel according to an embodiment of the present invention; Figure 4 for Figure 3 Enlarged area A; Figure 5 This is a schematic diagram of the exploded structure of the guide wheel according to an embodiment of the present invention; Figure 6 for Figure 5 Enlarged area B; Figure 7 for Figure 5 Enlarged area C; Figure 8 for Figure 5 Enlarged D region; Figure 9 This is a diagram showing the state of the guide wheel structure after the door is opened, according to an embodiment of the present invention. Figure 10 This is a diagram showing the state of the guide wheel structure after the door is closed, according to an embodiment of the present invention.

[0027] The meanings of the reference numerals in the attached drawings are as follows: 1. First guide wheel mechanism; 11. Pulley base plate; 12. Roller; 13. First guide wheel hinge part; 131. First guide wheel hinge shaft; 14. Supporting platform; 2. Second guide wheel mechanism; 21. Assembly clamping plate; 211. Assembly cavity; 212. First hinge shaft; 213. Second hinge shaft; 3. First support member; 31. First support member hinge part; 32. Flexible structure; 321. First extension edge; 322. Second extension edge; 33. Right-angle rotation groove; 34. First support member hinge shaft; 4. Second support member; 41. Second 42. Support hinge joint; 42. Second limiting structure; 421. Third extension edge; 422. Fourth extension edge; 43. Third limiting structure; 431. Fifth extension edge; 432. Sixth extension edge; 44. Third hinge shaft; 5. Cabinet body; 51. Second guide rail; 511. Retractable space; 52. Load-bearing guide rail; 53. Load-bearing pulley block; 6. Sliding door body; 61. First guide rail; 7. Limiting block; 8. Adjustable block; 9. Elastic abutment; 91. Kit housing; 911. First bayonet; 92. Insertion piece; 921. Second bayonet; 93. Elastic element. Detailed Implementation To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described and discussed below with reference to the accompanying drawings. Obviously, what is described here is only a part of the examples of this invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the protection scope of this invention.

[0028] To facilitate understanding of the embodiments of the present invention, further explanations and descriptions will be provided below with reference to the accompanying drawings and specific embodiments, and these embodiments do not constitute a limitation on the embodiments of the present invention.

[0029] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0031] See Figures 1-10As shown, this invention discloses a sliding door guide wheel structure, including a first guide wheel mechanism 1, a second guide wheel mechanism 2, a first support member 3, and a second support member 4. The first guide wheel mechanism 1 is used to slide along a first guide rail 61 on the inner side of the sliding door body 6, and the second guide wheel mechanism 2 is used to slide along a second guide rail 51 on the upper or lower inner side wall of the cabinet body 5. The first guide rail 61 and the second guide rail 51 are installed in the same direction. The height direction of the cabinet body 5 is set as the Z-axis direction, the direction in which the sliding door body 6 extends or enters the cabinet body 5 when opening or closing is the Y-axis direction, and the direction in which the sliding door body 6 moves to fold with another sliding door body 6 is the X-axis direction. Therefore, the first guide rail 61 and the second guide rail 51 are arranged along the Z-axis direction, and one end of the first support member 3 is connected to the first guide wheel mechanism 1. One end of the second support member 4 is hinged to the other end of the first support member 3, and the other end of the second support member 4 is hinged to the second guide wheel mechanism 2. The first support member 3 and / or the second support member 4 are provided with a limiting structure to restrict the hinge rotation angle, so that when the first guide wheel mechanism 1 slides and / or the second guide wheel mechanism 2 slides, the maximum angle between the first support member 3 and the second support member 4 remains constant. This allows the first guide wheel mechanism 1 and the second guide wheel mechanism 2 to slide in the same direction, specifically when the sliding door 6 slides along the X-axis direction to open, thus limiting the rotation between the first support member 3 and the second support member 4, achieving a stable support effect. This ensures that the first guide wheel mechanism 1 and the second guide wheel mechanism 2 do not wobble during sliding, and the overall structure is aesthetically pleasing and occupies less space.

[0032] Both the first guide wheel mechanism 1 and the second guide wheel mechanism 2 include a pulley base plate 11 and at least two rollers 12. The rollers 12 are mounted on the pulley base plate 11, and the axles of the rollers 12 are perpendicular to the pulley base plate 11. The two or more rollers 12 have relatively stable guide surfaces for rolling along the sidewalls of the first guide rail 61 or the second guide rail 51. In this embodiment, three rollers 12 are provided. By designing the first guide wheel mechanism 1 and the second guide wheel mechanism 2 to have two guide surfaces, the first guide wheel mechanism 1 and the second guide wheel mechanism 2 can simultaneously contact the sidewalls when sliding within the first guide rail 61 and the second guide rail 51, resulting in more stable sliding, more even force distribution, and therefore a smoother sliding effect. Of course, in some embodiments, only one roller 12 can be provided on the pulley base plate 11, which can also achieve the desired sliding effect.

[0033] A flexible structure 32 is provided at the connection between one end of the first support member 3 and the first guide wheel mechanism 1. The flexible structure 32 includes a first extension edge 321 and a second extension edge 322 located on both sides of the hinge. One of the first extension edge 321 and the second extension edge 322 abuts against the first guide wheel mechanism 1, and the other has a gap with the first guide wheel mechanism 1 so that the first support member 3 has space to rotate away from the first guide wheel mechanism 1. Since the sliding door 6 always keeps parallel to the cabinet body 5 when opening or closing, it will cause the door to jam. Therefore, the gap can provide a certain amount of rotational fine-tuning space between the first guide wheel mechanism 1 and the first support member 3 to prevent the guide wheel from jamming and improve the smoothness of the guide wheel sliding.

[0034] Specifically, in this embodiment, referring to Figure 3-6 As shown, the track groove of the first guide rail 61 is arranged in the cabinet body 5 along the Y-axis. The first guide wheel mechanism 1 slides along the track groove of the first guide rail 61 in the X-axis direction. Limiting blocks 7 are provided at both ends of the track groove of the first guide rail 61 to prevent the first guide wheel mechanism 1 from sliding out of the track groove of the first guide rail 61. A first guide wheel hinge part 13 is provided on the back side of the pulley base plate 11 of the first guide wheel mechanism 1. The first guide wheel hinge part 13 is provided with a first guide wheel hinge shaft 131 along the Z-axis direction. One end of the first support member 3 is provided with a first support member hinge part 31 that is hinged to the first guide wheel hinge shaft 131. The flexible structure 32 is located at one end of the first support member 3. The flexible structure 32 extends along the first support member hinge part 31 toward the back side of the pulley base plate 11 of the first guide wheel mechanism 1 to form a first extension side 321 and a second extension side 322. The first guide wheel hinge part 13 is located on both sides of the first guide wheel hinge part 13. A stop platform 14 is provided for abutting against the first extension edge 321 and the second extension edge 322, respectively. The first extension edge 321 is longer than the second extension edge 322. The first extension edge 321 can always abut against the stop platform 14 of the first guide wheel mechanism 1 when the sliding door 6 is closed, so that the first support member 3 is always parallel to the first guide rail 61 when the sliding door 6 is closed. The second extension edge 322 can leave a gap with the stop platform 14 of the first guide wheel mechanism 1, so that when the sliding door 6 is opened, the other end of the first support member 3 can rotate slightly towards the first guide rail 61 until the second extension edge 322 abuts against the stop platform 14 of the first guide wheel mechanism 1. The rotation angle range of the first support member 3 is 10°-30° to ensure that the first support member 3 does not contact the first guide rail 61 when the sliding door 6 is opened.

[0035] The limiting structure includes a second limiting structure 42 located at the other end of the first support member 3 or one end of the second support member 4. The second limiting structure 42 includes a third extension edge 421 and a fourth extension edge 422 located on both sides of the hinge. The third extension edge 421 and the fourth extension edge 422 control the maximum rotation angle between the second support member 4 and the first support member 3 to 90°, which can limit the rotation angle between the first support member 3 and the second support member 4 to the range of 0° to 90°. Therefore, when the first guide wheel mechanism 1 and the second guide wheel mechanism 2 slide to one side, the relative stability between the first support member 3 and the second support member 4 can be maintained, thereby providing a stable support effect.

[0036] Specifically, in this embodiment, referring to Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, the second limiting structure 42 is located at one end of the second support member 4, and the other end of the first support member 3 is provided with a concave right-angle rotating groove 33. A first support member hinge shaft 34 is provided in the right-angle rotating groove 33. One end of the second support member 4 is provided with a second support member hinge joint 41 that is inserted into the right-angle rotating groove 33 and hinged to the first support member hinge shaft 34. The second limiting structure 42 includes a third extension edge 421 and a fourth extension edge 422 located on both sides of the second support member hinge joint 41, which are used to abut against the edges on both sides of the right-angle rotating groove 33, so that the rotation angle between the first support member 3 and the second support member 4 is within the range of 0° to 90°. When the sliding door 6 is opened, the first support member 3 and the second support member 4 rotate open to 90°. At this time, the sliding door 6 moves in the opening direction. The third extension edge 421 abuts against the edge on one side of the right-angle rotating groove 33, which can keep the rotation angle between the first support member 3 and the second support member 4 at 90°.

[0037] Furthermore, the limiting structure includes a third limiting structure 43 located at the other end of the second support member 4. The third limiting structure 43 includes a fifth extension edge 431 and a sixth extension edge 432 located on both sides of the hinge. The fifth extension edge 431 and the sixth extension edge 432 control the maximum angle of rotation between the second support member 4 and the second guide wheel mechanism 2 to be 90°, which is beneficial to control the hinge rotation range between the second support member 4 and the second guide wheel mechanism 2, and realize the second support member 4 to rotate to be perpendicular or parallel to the sliding direction of the second guide wheel mechanism 2.

[0038] Specifically, in this embodiment, referring to Figure 3 , Figure 4 , Figure 7-10As shown, the track groove of the second guide rail 51 is oriented towards the cabinet body 5 along the Z-axis. The second guide wheel mechanism 2 slides along the track groove of the second guide rail 51 in the X-axis direction. Limit blocks 7 are provided at both ends of the track groove of the second guide rail 51 to prevent the second guide wheel mechanism 2 from sliding out of the track groove of the second guide rail 51. An adjustable stop block 8 is provided at one end of the track groove of the second guide rail 51 near the closing direction. A space is reserved between the adjustable stop block 8 and the end of the track groove of the second guide rail 51 to accommodate the second support member 4. The retraction space 511 allows the second support member 4 to retract after the sliding door body 6 slides to the closed state, and the retracted second support member 4 is aligned with the second guide rail 51; the adjustable stop block 8 is used to control the maximum sliding distance of the second guide wheel mechanism 2 in the second guide rail 51, so that the sliding distance of the sliding door body 6 when opening or closing is equal to the sum of the sliding distance of the first guide wheel mechanism 1 in the first guide rail 61, the sliding distance of the first guide wheel mechanism 1 in the second guide rail 5, and the arc length distance of the rotation between the second support member 4 and the second guide wheel mechanism 2. The pulley base plate 11 of the two guide wheel mechanism 2 is equipped with an assembly clamping plate 21 on its back side. The assembly clamping plate 21 has an assembly cavity 211. The assembly cavity 211 is provided with a first hinge shaft 212 and a second hinge shaft 213 that penetrate the assembly cavity 211. The first hinge shaft 212 is used to hinge with the other end of the second support member 4. The fifth extension edge 431 and the sixth extension edge 432 of the third limiting structure 43 are located on both sides of the second support member 4 that are hinged with the first hinge shaft 212, respectively, and are used to abut with the side edges of the assembly cavity 211. The hinge angle between the second support member 4 and the assembly clamping plate 21 is controlled within the range of 0°-90°. When the sliding door 6 is opened, the second support member 4 rotates from the retraction space 511 to be perpendicular to the second guide rail 51. At this time, the fifth extension edge 431 abuts against the edge of the assembly clamping plate 21. When the sliding door 6 is closed, one end of the second support member 4 rotates into the retraction space 511 of the second guide rail 51 until the sixth extension edge 432 abuts against the edge of the assembly clamping plate 21. At this time, the retraction effect of the second support member 4 is completed, and the door is closed.

[0039] It should be noted that, since the space for rotation between the first support member 3 and the first guide wheel mechanism 1 is small, and the first guide rail 61 and the second guide rail 51 always remain parallel, the minimum included angle between the first support member 3 and the second support rod cannot be 0°. Since each hinge of the sliding door 6 is blocked by a limiting structure when the door is open, it can achieve a stable state. When the door is closed, the forces are opposite, so it is also necessary to set a structure to prevent the hinge from rotating easily. Therefore, an elastic abutment 9 is provided between the second support member 4 and the second guide wheel mechanism 2. One end of the elastic abutment 9 is rotatably connected to the second support member 4, and the other end is rotatably connected to the second guide wheel mechanism 2. The elastic abutment 9 is used to provide a supporting force to one end of the second support member 4 to prevent it from rotating in the sliding direction of the second guide wheel mechanism 2. It can provide a certain thrust to the second support member 4 when the first guide wheel mechanism 1 and the second guide wheel mechanism 2 slide, thereby keeping the hinge angle between the second support member 4 and the second guide wheel mechanism 2 unchanged.

[0040] Specifically, in this embodiment, refer to Figure 4. Figure 7 and Figure 8 As shown, a third hinge shaft 44 is provided at the other end of the second support member 4 in the direction of the second hinge shaft 213. The elastic abutment member 9 includes a kit housing 91, a plug member 92, and an elastic member 93 located between the two. One end of the kit housing 91 is recessed to form a receiving cavity, and the other end is provided with a first latch 911. The first latch 911 is rotatably engaged with the third hinge shaft 44. One end of the plug member 92 is inserted into the receiving cavity, and the other end is provided with a second latch 921. The second latch 921 is rotatably engaged with the third hinge shaft 44 of the second support member 4. The elastic member 93 is located between the receiving cavity and the plug member 92 and is used to provide elastic force for both parties. In this embodiment, the elastic member 93 adopts two springs. The elastic abutment 9 is clamped within the assembly cavity 211 of the assembly clamping plate 21, which limits the direction of the elastic force of the elastic abutment 9 and improves the hinge stability between the second support 4 and the second guide wheel mechanism 2, preventing excessive force during rotation from creating a force perpendicular to the direction of the elastic force of the elastic abutment 9. When the sliding door 6 is closed, one end of the second support rod will move in the closing direction under the pushing force of the first support rod. At this time, the elastic abutment 9 at the other end of the second support rod can provide elastic force to the second support rod to prevent one end of the second support rod from rotating towards the second guide rail 51. Until the second guide wheel mechanism 2 slides to the adjustable stop 8, the force of the one end of the second support rod rotating towards the second guide rail 51 is greater than the elastic force provided by the elastic abutment 9. Therefore, the one end of the second support rod will rotate towards the contraction space 511 near the second guide rail 51 to complete the contraction effect.

[0041] See Figure 1-4As shown, the present invention also relates to a cabinet with a sliding door guide wheel structure, including a cabinet body 5, a sliding door 6, a first guide rail 61, a second guide rail 51, a load-bearing guide rail 52, a load-bearing pulley group 53, and a sliding door guide wheel structure. The load-bearing guide rail 52 is mounted on the bottom of the cabinet body 5. The first guide rail 61 is installed on the upper side wall inside the cabinet body 5. The second guide rail 51 is installed above the inner side wall of the sliding door 6. The lower part of the sliding door is connected to the load-bearing pulley group 53. The load-bearing pulley group 53 slides along the load-bearing guide rail 52 to drive the sliding door 6 to move. When the sliding door 6 is opened, it is pulled out, driving the first guide rail 61 to move in the opening direction. At this time, the first guide wheel mechanism 1 is blocked by the limiting block 7 at one end of the first guide rail 61. The movement causes the first support member 3 and the second support member 4 to be in the open state. At this time, the first support member 3 and the second support member 4 maintain a certain angle and drive the second guide wheel mechanism 2 to slide along the second guide rail 51 until the sliding door 6 is fully open. When the sliding door 6 is closed, it drives the first guide rail 61 to move in the closing direction. At this time, the first guide wheel mechanism 1 slides to the other end of the first guide rail 61 and is blocked and pulled by the limiting block 7 at the other end. The first support member 3 and the second support member 4 maintain their angle unchanged due to the elastic force of the elastic abutment member 9, and at the same time push the second guide wheel mechanism 2 to slide along the second guide rail 51 until it abuts against the adjustable block 8. Then the first support member 3 and the second support member 4 begin to retract, and the sliding door 6 is pushed into the cabinet body 5 to complete the closing state. The first support member 3 and the second support member 4 maintain a certain angle and slide along the first guide rail 61 and / or the second guide rail 51 to provide sliding guidance for the upper part of the sliding door body 6. This enables the sliding door body 6 to control the angle between the first support member 3 and the second support member 4 to remain stable when the sliding door body 6 is opened and moved horizontally, thereby providing stable support and guidance for the sliding door body 6, greatly improving the stability of the sliding door body 6 when opening and closing, and reducing the shaking of the sliding door body 6 itself when opening and closing.

[0042] In summary, the sliding door guide wheel structure and the cabinet having it provided by the present invention have the following technical effects: 1. By setting a limiting structure at the end junction of the first support member 3 and / or the end junction of the second support member 4, the rotation angle between the first support member 3 and the second support member 4 can remain unchanged when the first guide wheel mechanism 1 and / or the second guide wheel mechanism 2 slide, thereby improving the support stability of the first support member 3 and the second support member 4 on the sliding door body 6 and reducing the shaking of the sliding door body 6 during the opening process; 2. By setting an elastic abutment 9 between the second support member 4 and the second guide wheel mechanism 2, a certain abutment force can be provided to the second support member 4 to prevent the second support member 4 from contracting and rotating during the sliding process, thereby improving the support stability of the second support member 4 when the sliding door body 6 is in the closed state. 3. The connection structure between the first support member 3 and the second support member 4 is simple, occupies little space inside the cabinet, and has a small proportion exposed to the user's field of vision, which greatly improves the user's experience.

[0043] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention.

Claims

1. A guide wheel structure for a sliding door, characterized in that, include: The first guide wheel mechanism (1) is used to slide along the first guide rail (61) on the inner side of the sliding door body (6); The second guide wheel mechanism (2) is used to slide along the second guide rail (51) on the upper or lower side wall of the cabinet body (5); The first support member (3) is connected at one end to the first guide wheel mechanism (1); The second support member (4) has one end hinged to the other end of the first support member (3) and the other end hinged to the second guide wheel mechanism (2). The first support member (3) and / or the second support member (4) are provided with a limiting structure for limiting the hinge rotation angle, so that when the first guide wheel mechanism (1) slides and / or the second guide wheel mechanism (2) slides, the maximum angle between the first support member (3) and the second support member (4) remains constant. The limiting structure includes a second limiting structure (42) located at the other end of the first support member (3) or at one end of the second support member (4). The second limiting structure (42) includes a third extension edge (421) and a fourth extension edge (422) located on both sides of the hinge. Or, the limiting structure includes a third limiting structure (43) located at the other end of the second support member (4). The third limiting structure (43) includes a fifth extension edge (431) and a sixth extension edge (432) located on both sides of the hinge.

2. The guide wheel structure for a sliding door according to claim 1, characterized in that, A flexible structure (32) is provided at the connection between one end of the first support member (3) and the first guide wheel mechanism (1). The flexible structure (32) includes a first extension edge (321) and a second extension edge (322) located on both sides of the connection. One of the first extension edge (321) and the second extension edge (322) abuts against the first guide wheel mechanism (1), and the other has a gap with the first guide wheel mechanism (1) so that the first support member (3) has space to rotate away from the first guide wheel mechanism (1).

3. The guide wheel structure for a sliding door according to claim 2, characterized in that, The third extension edge (421) and the fourth extension edge (422) control the maximum angle of rotation between the second support member (4) and the first support member (3) to be 90°, and / or the fifth extension edge (431) and the sixth extension edge (432) control the maximum angle of rotation between the second support member (4) and the second guide wheel mechanism (2) to be 90°.

4. The guide wheel structure for a sliding door according to claim 3, characterized in that, The second support member (4) and the second guide wheel mechanism (2) are provided with an elastic abutment member (9). One end of the elastic abutment member (9) is rotatably connected to the second support member (4), and the other end is rotatably connected to the second guide wheel mechanism (2). The elastic abutment member (9) is used to provide a supporting force to one end of the second support member (4) to prevent it from rotating in the sliding direction of the second guide wheel mechanism (2).

5. The guide wheel structure for a sliding door according to claim 4, characterized in that, The elastic abutment member (9) includes: The kit housing (91) has a recessed cavity at one end and a first bayonet (911) at the other end, which is rotatably connected to the second guide wheel mechanism (2). A connector (92) is inserted into the receiving cavity at one end and a second bayonet (921) is provided at the other end. The second bayonet (921) is rotatably connected to the second support member (4). An elastic element (93) is located between the receiving cavity and the plug (92) to provide elasticity to both.

6. The guide wheel structure for a sliding door according to claim 5, characterized in that, An assembly clamping plate (21) is also provided between the second support member (4) and the second guide wheel mechanism (2). The assembly clamping plate (21) has an assembly cavity (211), and the other end of the second support member (4) and the elastic abutment member (9) are located in the assembly cavity (211).

7. The guide wheel structure for a sliding door according to claim 1, characterized in that, Both the first guide wheel mechanism (1) and the second guide wheel mechanism (2) include: Pulley base plate (11); At least two rollers (12) are mounted on the pulley base plate (11), and the axle of the rollers (12) is perpendicular to the pulley base plate (11). The two or more rollers (12) have two opposing guide surfaces for rolling along the two side walls of the first guide rail (61) or the second guide rail (51).

8. A cabinet with a sliding door guide wheel structure, comprising a cabinet body (5), a sliding door body (6), a first guide rail (61), a second guide rail (51), a load-bearing guide rail (52), a load-bearing pulley block (53), and a sliding door guide wheel structure as described in any one of claims 1-7, characterized in that, The load-bearing guide rail (52) is assembled at the bottom of the cabinet body (5). The first guide rail (61) is installed on the upper side wall inside the cabinet body (5). The second guide rail (51) is installed above the inner side wall of the sliding door body (6). The lower part of the sliding door body is connected to the load-bearing pulley group (53). The load-bearing pulley group (53) slides along the load-bearing guide rail (52) to drive the sliding door body (6) to move. The first support member (3) and the second support member (4) maintain a certain angle and slide along the first guide rail (61) and / or the second guide rail (51) to provide sliding guidance for the upper part of the sliding door body (6).

9. A cabinet with a sliding door guide wheel structure according to claim 8, characterized in that, An adjustable stop (8) is provided near one end of the second guide rail (51). A retraction space (511) for accommodating the second support member (4) is reserved between the adjustable stop (8) and the end. The adjustable stop (8) is used to control the maximum sliding distance of the second guide wheel mechanism (2) in the second guide rail (51), so that the sliding distance of the sliding door body (6) when it opens or closes is equal to the sliding distance of the first guide wheel mechanism (1) in the first guide rail (61), the sliding distance of the first guide wheel mechanism (1) in the second guide rail (51), and the sum of the arc length distance of the rotation between the second support member (4) and the second guide wheel mechanism (2). When the sliding door body (6) is retracted by the load-bearing pulley group (53), the sliding door body (6) retracts into the cabinet so that the second support member (4) rotates into the retraction space (511) and aligns with the second guide rail (51).

Images