Pull rope fixing assembly, rack and refrigerator

Abstract

The utility model relates to the technical field of refrigerators, and discloses a pull rope fixing assembly which comprises an assembling part, a fixing part and a fixing part. The assembling groove is located in the first side of the assembling part, the first end of the rope groove communicates with the assembling groove, and the second end of the rope groove communicates with the second side of the assembling part. The fixing part is arranged in the assembling groove, and the first side of the fixing part faces the rope groove; in addition, the first side of the fixing part is used for being connected with the first end of a pull rope, and the second end of the pull rope extends to the second side of the assembling part through the rope groove. Therefore, when the pull rope is subjected to external force, the assembly groove can firmly limit the position of the fixing part, so that the first end of the pull rope is effectively prevented from loosening, and potential safety hazards are reduced. The utility model further discloses a rack and a refrigerator.

Description

Technical Field

[0001] The present application relates to the technical field of refrigerators, and in particular to a drawstring fixing assembly, a shelf, and a refrigerator. Background Art

[0002] A refrigerator is a refrigeration device that maintains a constant low temperature and is used to keep food or other items at a constant low temperature.

[0003] Related art discloses a refrigerator equipped with a liftable shelf. The shelf comprises a shelf body, a pull cord, a fixed pulley assembly, a winding wheel assembly, a slide rail assembly, and a movable pulley assembly. The pull cord is guided by the fixed pulley assembly, with a first end of the pull cord fixed and a second end connected to the winding wheel assembly. The shelf body is connected to the pull cord via the movable pulley assembly. The slide rail assembly is secured with screw fasteners. As the winding wheel assembly winds or releases the pull cord, the movable pulley assembly moves along the pull cord, thereby driving the shelf body up and down along the slide rail assembly.

[0004] During the implementation of the embodiments of the present disclosure, it was found that at least the following problems exist in the related art:

[0005] The first end of the drawstring has a poor fixing effect, posing a safety hazard.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Utility Model Content

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not intended to be an extensive review, nor to identify key / critical elements or to delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide a drawstring fixing assembly, a shelf, and a refrigerator, which solve the problem of poor fixing effect of the first end of the drawstring.

[0009] In some embodiments, the drawstring securing assembly comprises:

[0010] The assembly portion is provided with an assembly groove and a rope groove; wherein the assembly groove is located on a first side of the assembly portion, a first end of the rope groove is connected to the assembly groove, and a second end thereof is connected to a second side of the assembly portion;

[0011] The fixing portion is arranged in the assembly groove, with its first side facing the rope groove; and the first side of the fixing portion is used to connect the first end of the pull rope, and the second end of the pull rope extends to the second side of the assembly portion through the rope groove.

[0012] In some embodiments, the rack includes the drawstring securing assembly.

[0013] In some embodiments, the refrigerator includes the shelf.

[0014] The pull cord fixing assembly, shelf, and refrigerator provided by the embodiments of the present disclosure can achieve the following technical effects:

[0015] The first end of the pull cord is connected to the fixing portion, which is then inserted into the mounting groove and secured there. The second end of the pull cord extends through the groove to the second side of the mounting portion, where it is then connected to the reel assembly. Thus, the fixing portion is installed in the mounting groove on the first side of the mounting portion, and the second end of the pull cord is guided to the second side of the mounting portion through the groove. When the pull cord is subjected to external forces, the mounting groove firmly holds the fixing portion in place, effectively preventing the first end of the pull cord from coming loose and minimizing safety hazards.

[0016] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0018] Figure 1 is a schematic structural diagram of a shelf provided by an embodiment of the present disclosure;

[0019] Figure 2 is a schematic diagram of the structure of a movable pulley assembly provided by an embodiment of the present disclosure;

[0020] Figure 3 is a structural schematic diagram of an assembly portion provided by an embodiment of the present disclosure;

[0021] Figure 4 is a structural schematic diagram of a fixing portion provided by an embodiment of the present disclosure;

[0022] Figure 5 Schematic diagram of the structure of the anti-slip structure provided by an embodiment of the present disclosure;

[0023] Figure 6 is a schematic structural diagram of an assembly slot provided in an embodiment of the present disclosure;

[0024] Figure 7 is a structural diagram of an adjustment unit provided in an embodiment of the present disclosure;

[0025] Figure 8 is an exploded schematic diagram of an adjustment portion provided by an embodiment of the present disclosure;

[0026] Figure 9 is a structural diagram of the installation portion provided by an embodiment of the present disclosure;

[0027] Figure 10 is a schematic diagram of a first position of a rotating arm provided by an embodiment of the present disclosure;

[0028] Figure 11 is an exploded schematic diagram of a rotating arm provided by an embodiment of the present disclosure;

[0029] Figure 12 is a schematic diagram of a second position of the rotating arm provided by an embodiment of the present disclosure;

[0030] Figure 13 is a schematic diagram of a first position of a mobile base provided by an embodiment of the present disclosure;

[0031] Figure 14 is an exploded schematic diagram of a mobile base provided by an embodiment of the present disclosure;

[0032] Figure 15 is a schematic diagram of a second position of the mobile base provided in an embodiment of the present disclosure;

[0033] Figure 16 is a structural schematic diagram of a bracket portion provided by an embodiment of the present disclosure;

[0034] Figure 17 This is a schematic structural diagram of an overlapping hem provided by an embodiment of the present disclosure;

[0035] Figure 18 It is a structural schematic diagram of another overlapping hem provided in an embodiment of the present disclosure.

[0036] Reference numerals:

[0037] 100, shelf body; 110, sliding bracket; 111, guide wheel; 120, movable pulley; 130, slide rail body; 131, guide groove; 140, winding wheel assembly; 141, first mounting area; 142, second mounting area; 143, fifth mounting area; 150, mounting plate; 151, protective hem; 152, slot; 160, draw cord; 170, screw head;

[0038] 200, assembly portion; 201, first arc surface; 210, assembly groove; 211, positioning groove; 212, fixing groove; 213, first plug block; 220, rope groove; 221, first undercut; 222, second undercut; 223, rope notch; 230, fixing portion; 231, positioning protrusion; 232, fixing protrusion; 240, second stopper; 241, second plug block; 242, second arc surface; 250, adjustment portion; 251, cam member; 252, camshaft; 253, anti-rotation cut surface; 254, knob; 255, abutment plate; 256, twisting plate; 260, adjustment hole;

[0039] 300, overlapping portion; 310, rotating arm; 311, rotating shaft; 312, overlapping wheel; 313, spring member; 320, fixed seat; 321, movable groove; 330, movable seat; 331, movable plate; 332, trigger plate; 340, detecting portion; 341, trigger member; 342, micro switch;

[0040] 400, bracket portion; 401, first plate segment; 402, second plate segment; 403, third plate segment; 404, fourth plate segment; 405, wire inlet trough; 406, wire outlet trough; 410, fixed pulley; 411, mounting shaft; 420, fixing hole; 430, avoidance gap; 440, overlapping folded edge; 450, overlapping gap. DETAILED DESCRIPTION

[0041] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0042] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that such terms are interchangeable where appropriate to describe the embodiments of the present disclosure. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0043] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to having a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0044] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0045] Unless otherwise stated, the term "plurality" means two or more.

[0046] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0047] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0048] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0049] Combine Figure 1-18 As shown, an embodiment of the present disclosure provides a refrigerator, which includes a shelf, and the shelf includes a shelf body 100, a slide rail assembly, a movable pulley assembly, a fixed pulley assembly, a pull rope fixing assembly, a pull rope tightness detection assembly, and a winding wheel assembly 140. The shelf body 100 is connected to the movable pulley assembly, and the movable pulley assembly is connected to the slide rail assembly. The pull rope fixing assembly is arranged on the slide rail assembly for fixing the first end of the pull rope 160, and the second end of the pull rope 160 is connected to the winding wheel assembly 140. The movable pulley assembly is arranged on the pull rope 160. When the winding wheel assembly 140 winds or releases the pull rope 160, the length of the pull rope 160 changes, and then moves along the pull rope 160 with the movable pulley assembly, so that the movable pulley assembly drives the shelf body 100 to move along the slide rail assembly. Here, the moving direction includes up and down movement, that is, the shelf body 100 can rise or fall. Furthermore, the fixed pulley assembly is used to guide the extension direction of the pull rope 160 so as to facilitate the layout of the pull rope 160. The pull rope tension detection assembly is used to detect the tension of the pull rope 160 so as to adjust the pull rope 160 in time to ensure the safe movement of the shelf body 100.

[0050] In the first embodiment, the drawstring fixing assembly includes an assembly portion 200 and a fixing portion 230. Figure 3 and Figure 4As shown, the assembly portion 200 is provided with an assembly groove 210 and a rope groove 220; wherein, the assembly groove 210 is located on a first side of the assembly portion 200, and a first end of the rope groove 220 is connected to the assembly groove 210, and a second end thereof is connected to a second side of the assembly portion 200; the fixing portion 230 is disposed in the assembly groove 210, with its first side facing the rope groove 220; and the first side of the fixing portion 230 is used to connect to the first end of the pull rope 160, and the second end of the pull rope 160 extends through the rope groove 220 to the second side of the assembly portion 200.

[0051] In this embodiment, the first end of the pull cord 160 is connected to the fixing portion 230, which is then inserted into the mounting groove 210 for securement. The second end of the pull cord 160 extends through the rope groove 220 to the second side of the mounting portion 200, where it is then connected to the reel assembly 140. Thus, the fixing portion 230 is installed within the mounting groove 210 on the first side of the mounting portion 200, and the second end of the pull cord 160 is guided to the second side of the mounting portion 200 via the rope groove 220. When the pull cord 160 is subjected to external forces, the mounting groove 210 can firmly define the position of the fixing portion 230, effectively preventing the first end of the pull cord 160 from becoming loose, thereby reducing safety hazards.

[0052] Alternatively, as Figure 3 As shown, along the extension direction of the rope groove 220, the notch of the rope groove 220 is connected to the outside of the assembly part 200, and the pull rope 160 can be installed in the rope groove 220 through the notch. In this way, it is convenient to press the pull rope 160 into the rope groove 220 from the notch.

[0053] Alternatively, as Figure 5 As shown, the rope groove 220 has an anti-slip structure at its opening. The anti-slip structure includes a first undercut 221 and a second undercut 222. The first undercut 221 is provided on one side of the groove wall at the opening; the second undercut 222 is provided on the other side of the groove wall at the opening and corresponds to the first undercut 221. Furthermore, an anti-slip gap is formed between the first undercut 221 and the second undercut 222. The width of the anti-slip gap is smaller than the diameter of the pull rope 160.

[0054] In this embodiment, because the width of the anti-slip gap is smaller than the diameter of the drawstring 160, when the drawstring 160 attempts to escape from the rope groove 220, it is restrained by the anti-slip gap and cannot escape easily. Furthermore, because the edges of the groove are relatively sharp, the anti-slip structure can also prevent the drawstring 160 from contacting and rubbing against the edges of the groove, thereby reducing wear on the drawstring 160.

[0055] Alternatively, as Figure 4 As shown, a rope notch 223 is provided at the second end of the rope groove 220, and the rope notch 223 is arranged opposite to the notch of the rope groove 220. By providing the rope notch 223, it is beneficial to reduce the wear of the second end of the rope groove 220 when the pull rope 160 shakes.

[0056] Alternatively, as Figure 4 and Figure 6 As shown, the bottom of the assembly groove 210 is recessed downward to form a positioning groove 211 ; a positioning protrusion 231 is provided on the first side of the fixing portion 230 , and the positioning protrusion 231 corresponds to the positioning groove 211 .

[0057] In this embodiment, when the fixing portion 230 is inserted into the assembly groove 210, the positioning protrusion 231 extends into the positioning groove 211. This facilitates easier and more accurate assembly of the fixing portion 230 with the assembly portion 200.

[0058] Optionally, the first end of the pull rope 160 is connected to the positioning protrusion 231, and the first end of the rope groove 220 is connected to the positioning groove 211. Here, the positioning protrusion 231 provides a connection position for the pull rope 160.

[0059] Alternatively, as Figure 4 and Figure 6 As shown, the bottom of the assembly groove 210 is also recessed downward to form a fixing groove 212, which is located on one side of the positioning groove 211, and the depth of the fixing groove 212 is smaller than that of the positioning groove 211; a fixing protrusion 232 is also provided on the first side of the fixing portion 230, and the fixing protrusion 232 corresponds to the fixing groove 212.

[0060] In this embodiment, when the fixing portion 230 is inserted into the assembly groove 210, the fixing protrusion 232 extends into the fixing groove 212. Then, a screw fastener is used to pass through the fixing protrusion 232 and connect to the bottom of the fixing groove 212, so that the fixing portion 230 and the assembly portion 200 are fixed.

[0061] Alternatively, as Figure 1 and Figure 2 As shown, the rack also includes a rack body 100 and a movable pulley assembly. The movable pulley assembly includes a sliding bracket 110 and a movable pulley 120 connected to each other. The rack body 100 is connected to the sliding bracket 110, and the sliding bracket 110 can move along the slide rail assembly. The movable pulley 120 is disposed on a pull cord 160 near its first end, and moves along the pull cord 160 when the length of the pull cord 160 changes.

[0062] In this embodiment, when the reel assembly 140 winds or releases the pull rope 160, the length of the pull rope 160 changes, and the pull rope 160 drives the movable pulley 120 to move along the pull rope 160. At the same time, the movable pulley 120 drives the sliding bracket 110 to move along the slide rail assembly, and then the sliding bracket 110 drives the shelf body 100 to move.

[0063] Optionally, the rail assembly includes a rail body 130. The rail body 130 is provided with a guide groove 131, and the first end of the guide groove 131 is provided through the rail body 130. The pull rope fixing assembly is provided at the first end of the guide groove 131, and the assembly portion 200 is inserted into the first end of the guide groove 131 via a first plug block 213. The assembly portion 200 can also interfere with the movable pulley assembly to serve as a first stop.

[0064] In this embodiment, the sliding bracket 110 slides along the guide groove 131, and the mounting portion 200 is disposed at the first end of the guide groove 131 and serves as a first stop. When the movable pulley assembly moves to the first end of the guide groove 131, the sliding bracket 110 and / or the movable pulley 120 abuts against the mounting portion 200, thereby preventing the movable pulley assembly from sliding further.

[0065] Optionally, the rail body 130 is vertically arranged, and the first end of the guide groove 131 is the upper end thereof. When the movable pulley assembly moves upward to contact the assembly portion 200, the shelf body 100 reaches the upper limit position.

[0066] Alternatively, as Figure 4 As shown, the second side of the assembly portion 200 is provided with a first curved surface 201, which corresponds to the outer periphery of the movable pulley 120. Thus, when the movable pulley assembly moves to the first end of the guide groove 131, the movable pulley 120 contacts the first curved surface 201. The curved surface design helps distribute and balance forces, reducing impact and vibration when a stop occurs.

[0067] Alternatively, as Figure 2 As shown, the second end of the guide slot 131 is provided through-hole. The rack further includes a second stopper 240, which is inserted into the second end of the guide slot 131 via a second insert 241. Furthermore, the second stopper 240 can abut against the movable pulley assembly. Thus, when the movable pulley assembly moves to the second end of the guide slot 131, it abuts against the second stopper 240, thereby preventing the movable pulley assembly from sliding further.

[0068] Optionally, the slide rail body 130 is vertically arranged, and the second end of the guide groove 131 is the lower end thereof. When the movable pulley assembly moves downward to conflict with the movable pulley assembly, the shelf body 100 reaches the lower limit position.

[0069] Optionally, the slide rail assembly further includes a guide wheel 111. The guide wheel 111 is provided on the side of the sliding bracket 110, and the guide wheel 111 is located in the guide groove 131 and can move along it; and the second plug-in block 241 is provided with a second arc surface 242, and the second arc surface 242 corresponds to the outer periphery of the guide wheel 111. In this way, the sliding bracket 110 moves along the guide groove 131 through the guide wheel 111. And, when the movable pulley assembly moves to the second end of the guide groove 131, the guide wheel 111 conflicts with the second arc surface 242. The arc surface design is conducive to dispersing and balancing the force, reducing the impact and vibration when the stop occurs.

[0070] In the second embodiment, the rack includes a rail assembly and a drawstring fixing assembly. The rail assembly includes a rail body 130, and the rail body 130 is provided with a guide groove 131; the drawstring fixing assembly is used to fix the drawstring 160, and includes an assembly portion 200; the assembly portion 200 is inserted into the guide groove 131 through a first plug block 213, and the first plug block 213 is movable in the guide groove 131; Figure 7 As shown, the adjustment assembly includes an adjustment portion 250, which is movably arranged in the guide groove 131; and when the adjustment portion 250 moves, it can interfere with the first plug block 213, and then drive the assembly portion 200 to move through the first plug block 213, thereby adjusting the position of the pull rope fixing assembly.

[0071] In this embodiment, by moving the adjustment portion 250, the adjustment portion 250 drives the first inserting block 213 to move within the guide slot 131. The movement of the first inserting block 213 drives the assembly portion 200, which in turn drives the drawstring fixing assembly. Adjusting the position of the drawstring fixing assembly also adjusts the fixed position of the drawstring 160. This facilitates adjustment of the fixed position of the drawstring 160 and facilitates leveling of the shelf body 100.

[0072] Alternatively, as Figure 8 As shown, the adjustment portion 250 includes a cam member 251. The cam member 251 is pivotally connected to the guide slot 131 via a cam shaft 252 and rotates. Furthermore, when the cam member 251 rotates, its outer profile contacts the first inserting block 213. Thus, when the cam member 251 rotates, its outer profile moves against the first inserting block 213, thereby driving the rope fixing assembly to move.

[0073] Optionally, the camshaft 252 is provided with an anti-rotation cutout 253, and the cam member 251 is provided with a shaft hole that matches the anti-rotation cutout 253. In this way, when the camshaft 252 rotates, the cam member 251 is rotated. Under the action of the anti-rotation cutout 253, the camshaft 252 and the cam member 251 are prevented from rotating relative to each other.

[0074] Alternatively, as Figure 9As shown, the adjustment portion 250 further includes a knob 254. The knob 254 is positioned outside the guide slot 131, and the cam shaft 252 passes through the guide slot 131 and is connected to the knob 254. Furthermore, the knob 254 drives the cam member 251 to rotate. Thus, from outside the guide slot 131, the user can manually adjust the position of the drawstring fixing assembly by rotating the cam member 251 using the knob 254, which is both convenient and practical.

[0075] Alternatively, as Figure 8 As shown, the knob 254 is provided with abutment plate 255, and the abutment plate 255 abuts against the outer wall of the guide groove 131. Like this, under the effect of the abutment plate 255, the contact area of ​​the knob 254 and the guide groove 131 is increased, making the knob 254 more stable when rotating.

[0076] Optionally, the knob 254 is further provided with a twisting plate 256, and the twisting plate 256 is vertically connected to the abutment plate 255. Under the action of the twisting plate 256, it is convenient for the user to hold and exert force.

[0077] Alternatively, as Figure 7 As shown, when the highest point of the cam member 251's profile contacts the first inserting block 213, the first inserting block 213 remains within the guide slot 131. Here, when the highest point of the cam member 251's profile contacts the first inserting block 213, the first inserting block 213 reaches its maximum travel distance. At this point, the first inserting block 213 remains within the guide slot 131, ensuring that the drawstring securing assembly does not separate from the slide rail body 130.

[0078] Optionally, an adjustment hole 260 is provided through the wall of the guide slot 131. The adjustment hole 260 is configured as a strip and extends along the direction of movement of the first insert block 213. Furthermore, a screw fastener is passed through the adjustment hole 260 to secure the first insert block 213 within the guide slot 131. Thus, the screw fastener can be removed or loosened before adjustment. After adjusting the position of the first insert block 213 using the adjustment portion 250, the screw fastener can be re-tightened.

[0079] Optionally, the first end of the guide slot 131 is through-set, and the first inserting block 213 is inserted into the guide slot 131 from the first end of the guide slot 131. In this way, the pull cord fixing assembly is located at the first end of the guide slot 131.

[0080] In the third embodiment, the pull cord tension detection assembly includes a lap joint 300 and a detection portion 340. The lap joint 300 is lapped on one side of the pull cord 160 and is movable and resettable. The detection portion 340 includes a trigger 341 and a micro switch 342. The trigger 341 is disposed on the lap joint 300 to follow its movement, and the micro switch 342 is disposed along the movement trajectory of the trigger 341. When the pull cord 160 is tightened, the external force applied to the lap joint 300 causes the lap joint 300 to move to a first position corresponding to no contact between the trigger 341 and the micro switch 342. When the pull cord 160 is relaxed, the lap joint 300 resets to a second position corresponding to contact between the trigger 341 and the micro switch 342.

[0081] In this embodiment, the pull cord 160 has a tensioned state and a relaxed state. When the pull cord 160 is tensioned, the external force applied to the overlap portion 300 drives the overlap portion 300 to move to the first position. At this time, the trigger member 341 moves synchronously with the overlap portion 300 and has no contact with the microswitch 342, that is, the microswitch 342 is not triggered. When the pull cord 160 is relaxed, the external force applied by the pull cord 160 decreases to a certain extent or disappears, and the overlap portion 300 returns to the second position. At this time, the trigger member 341 moves synchronously with the overlap portion 300 and contacts the microswitch 342, that is, the microswitch 342 is triggered. In this way, the relaxation of the pull cord 160 can be accurately detected and feedback can be provided, so that the state of the pull cord 160 can be adjusted in a timely manner, reducing safety hazards.

[0082] Alternatively, as Figure 10 and Figure 11 As shown, the lap joint 300 includes a rotating arm 310 and a spring member 313. The first end of the rotating arm 310 is provided with a rotating shaft 311, and the second end is provided with a lap wheel 312. The second end of the rotating arm 310 is rotatable about the first end, and the lap wheel 312 is lapped on one side of the pull rope 160. The spring member 313 is sleeved on the rotating shaft 311 to provide a resilient force to return the rotating arm 310 to its original position.

[0083] In this embodiment, the coupling wheel 312 drives the rotating arm 310 to rotate to the first position after receiving the external force when the pull rope 160 is tightened. Figure 10 As shown. At this time, the spring member 313 is in the elastic force storage state. After the external force is reduced or disappears, the spring member 313 is in the elastic force release state and drives the rotating arm 310 to rotate to the second position, as shown. Figure 12 At this time, the trigger member 341 contacts the micro switch 342, and the micro switch 342 is triggered.

[0084] Optionally, the spring member 313 includes a torsion spring. Here, the torsion spring is used to facilitate driving the second end of the rotating arm 310 to rotate around the first end.

[0085] Optionally, the trigger member 341 is disposed in the middle of the rotating arm 310 .

[0086] Alternatively, as Figure 13 and Figure 14 As shown, the overlapping portion 300 includes a fixed base 320, a movable base 330, and a spring member 313. The fixed base 320 is provided with a movable groove 321; the movable base 330 is disposed on the fixed base 320 and is movable along the movable groove 321; and the movable base 330 is provided with a coupling wheel 312, which is coupled to one side of the pull rope 160. The spring member 313 has a first end connected to the fixed base 320 and the other end connected to the movable base 330, and is used to provide a restoring elastic force to the movable base 330.

[0087] In this embodiment, the coupling wheel 312 drives the movable seat 330 to move to the first position along the movable groove 321 after receiving the external force when the pull rope 160 is tightened. Figure 13 As shown. At this time, the spring member 313 is in a state of elastic force storage. After the external force is reduced or disappears, the spring member 313 is in a state of elastic force release, and drives the movable seat 330 to move along the movable groove 321 to the second position, as shown. Figure 15 At this time, the trigger member 341 contacts the micro switch 342, and the micro switch 342 is triggered.

[0088] Optionally, the spring member 313 includes a tension spring or a compression spring. Here, the tension spring or the compression spring is used to facilitate driving the movable seat 330 to move in a straight line along the movable slot 321.

[0089] Alternatively, as Figure 14 As shown, the movable base 330 includes a movable plate 331 and a trigger plate 332. The movable plate 331 is used to mount the coupling wheel 312, with its first side facing the microswitch 342. A movable protrusion is provided on the side of the movable plate 331, which is located within the movable groove 321. The trigger plate 332 is connected to the first side of the movable plate 331 to serve as a trigger member 341. As the movable plate 331 moves along the movable groove 321 via the movable protrusion, the trigger plate 332 moves synchronously with the movable plate 331. When the movable plate 331 moves into contact with the microswitch 342, the microswitch 342 is triggered.

[0090] Optionally, the micro switch 342 is arranged on the fixing base 320. In this way, the fixing base 320 provides a mounting position for the micro switch 342.

[0091] Optionally, the rack further comprises a winding wheel assembly 140. The winding wheel assembly 140 is used to wind or release the pull rope 160 and is provided with a first mounting area 141 and a second mounting area 142; Figure 10 As shown, the rotating arm 310 is pivotally connected to the first installation area 141 via the rotating shaft 311 , and the micro switch 342 is disposed on the second installation area 142 .

[0092] In this embodiment, the reel assembly 140 includes a reel and a drive motor. The drive motor is used to drive the reel to rotate, winding or releasing the pull rope 160. The reel housing is provided with a first mounting area 141 and a second mounting area 142, which respectively provide mounting locations for the rotating arm 310 and the micro switch 342. This facilitates the wiring layout of the micro switch 342.

[0093] Optionally, the rack includes a fixed pulley assembly for guiding the extension direction of the pull rope 160 and having a third mounting area and a fourth mounting area (not shown); wherein the rotating arm 310 is pivotally connected to the third mounting area via a rotating shaft 311, and the micro switch 342 is disposed on the fourth mounting area.

[0094] In this embodiment, the fixed pulley assembly includes a bracket portion 400 for mounting a fixed pulley 410. A third mounting area and a fourth mounting area are provided on the bracket portion 400, providing mounting locations for the rotating arm 310 and the micro switch 342, respectively. This allows the rope tension detection assembly to be mounted on the fixed pulley assembly.

[0095] Optionally, the rack includes a reel assembly 140. The reel assembly 140 is used to wind or release the pull rope 160 and is provided with a fifth mounting area 143; Figure 13 As shown, the fixing seat 320 is arranged in the fifth installation area 143. Here, the fifth installation area 143 is arranged on the cover of the winding wheel to provide an installation position for the fixing seat 320.

[0096] Optionally, the rack further comprises a controller which is electrically connected to the reel assembly 140 and is used to control the reel assembly 140 to rotate or stop; and when the micro switch 342 is triggered, the controller controls the reel assembly 140 to stop rotating.

[0097] In this embodiment, the controller is electrically connected to the drive motor. When the drive motor is activated, it drives the winding wheel to rotate. The rotation of the winding wheel winds or releases the pull cord 160, thereby driving the shelf body 100 to move. Once the pull cord 160 slackens and the microswitch 342 is triggered, the controller stops the winding wheel, and the shelf body 100 stops moving. This ensures the safety of the shelf body 100 during movement.

[0098] In the fourth embodiment, the fixed pulley assembly includes a fixed pulley 410 and a bracket portion 400. Figure 16As shown, the fixed pulley 410 is used to guide the extension direction of the pull rope 160, and has an input side and an output side; the bracket portion 400 is used to install the fixed pulley 410, and includes a first plate segment 401, a second plate segment 402, a third plate segment 403 and a fourth plate segment 404; the first plate segment 401 and the second plate segment 402 are arranged opposite to each other, the installation shaft 411 is passed through the fixed pulley 410, and the two ends of the installation shaft 411 are respectively connected to the first plate segment 401 and the second plate segment 402; and the third plate segment 403 is arranged on the input side, and together with the first plate segment 401 and the second plate segment 402, it encloses an input groove 405; the fourth plate segment 404 is arranged on the output side, and together with the first plate segment 401 and the second plate segment 402, it encloses an output groove 406.

[0099] In this embodiment, the inlet and outlet sides of the fixed pulley 410 correspond to the incoming and outgoing directions of the pull rope 160, respectively. The inlet groove 405 serves to limit the incoming pull rope 160, while the outlet groove 406 serves to limit the outgoing pull rope 160. This prevents the pull rope 160 from slacking due to the inlet and outlet grooves 405 and 406 of the bracket 400, preventing the pull rope 160 from derailing on either side of the fixed pulley 410, thus minimizing safety hazards.

[0100] Optionally, the first plate segment 401 is provided with a fixing hole 420, through which a screw fastener is inserted to secure the bracket portion 400; and the second plate segment 402 is provided with an escape notch 430, with the escape notch 430 avoiding the fixing hole 420. Thus, the first plate segment 401 is placed against the mounting position, and the screw fastener is inserted through the fixing hole 420 from the escape notch 430, thereby securing the first plate segment 401 in the mounting position.

[0101] Alternatively, as Figure 16 As shown, the fixing holes 420 are configured in a strip shape to facilitate adjustment of the position of the bracket portion 400. Thus, the use of the strip-shaped fixing holes 420 facilitates adjustment of the position of the bracket portion 400 when fixing the bracket portion 400. For example, if a bracket portion 400 is provided on each side, it is convenient to level the two bracket portions 400.

[0102] Optionally, a first side of the third plate segment 403 is connected to the first plate segment 401, and a second side of the third plate segment 403 is provided with an overlapping folded edge 440. Furthermore, the overlapping folded edge 440 is bent toward the second plate segment 402 and abuts against the surface of the second plate segment 402 that is away from the first plate segment 401. In this way, the third plate segment 403 is connected to the second plate segment 402 via the overlapping folded edge 440.

[0103] Alternatively, as Figure 18As shown, the second side of the third plate segment 403 is integrally bent to form an overlapping fold 440. In this way, the overlapping fold 440 is longer, which increases the contact area with the second plate segment 402 and is conducive to improving the connection strength.

[0104] Alternatively, as Figure 17 As shown, the second side portion of the third plate segment 403 is bent to form an overlapping fold 440; and the second plate segment 402 is provided with an overlapping notch 450, which corresponds to the overlapping fold 440, and the overlapping fold 440 passes through the overlapping notch 450 and is bent toward the second plate segment 402.

[0105] In this embodiment, the length of the lap fold 440 is relatively short. For example, only the middle portion of the second side of the third plate segment 403 is bent to form the lap fold 440. The lap notch 450 acts to limit the lap fold 440, thereby reducing dislocation or loosening caused by external forces.

[0106] Optionally, the first plate segment 401 is parallel to the second plate segment 402, and the third plate segment 403 is perpendicular to the first plate segment 401. In this way, the forces between the plate segments are more uniform and the appearance is more beautiful.

[0107] Optionally, the first plate segment 401 is parallel to the second plate segment 402, and the fourth plate segment 404 is connected to the first plate segment 401 and the second plate segment 402 on both sides, and the fourth plate segment 404 is perpendicular to the first plate segment 401. In this way, the forces between the plate segments are more uniform and the appearance is more beautiful.

[0108] Optionally, the first plate segment 401, the second plate segment 402, the third plate segment 403 and the fourth plate segment 404 are formed by bending a single plate to form the bracket portion 400. In this way, the bracket portion 400 is integrally formed using a bending process, which is beneficial to improving production efficiency and reducing production difficulty and cost.

[0109] In the fifth embodiment, a rack includes a rack body 100 and a rail assembly. The rack body 100 is movable along the rail assembly, and a pull cord 160 is connected to the rack body 100 to pull the rack body 100 to move. The rail assembly includes a mounting portion, which includes a mounting plate 150 and a protective hem 151 connected thereto. The mounting plate 150 is used to mount screw fasteners. The protective hem 151 is arranged along the extension direction of the pull cord 160 and adjacent to the screw fasteners to prevent the pull cord 160 from becoming entangled with the screw fasteners when it is loose.

[0110] In this embodiment, screws are inserted through the mounting plate 150 to secure the rail assembly in place, and the drawstring 160 is used to pull the shelf body 100 along the rail assembly. If the drawstring 160 becomes slack, the protective hem 151 effectively prevents it from becoming entangled in the screws, facilitating subsequent adjustments to the drawstring 160.

[0111] Optionally, the screw fasteners are arranged adjacent to the first side of the mounting plate 150. Figure 2 As shown, the protective hem 151 is formed by bending the first side of the mounting plate 150 toward the screw head 170 of the screw fastener. The bending process is simple and cost-effective. By providing the protective hem 151, the pull rope 160 can be prevented from being entangled on the screw head 170.

[0112] Optionally, the bending angle of the protective fold 151 is 90 degrees. In this way, the right-angle fold structure has good structural strength and is easy to process and shape.

[0113] Optionally, the height of the protective flange 151 is greater than or equal to the height of the screw head 170 .

[0114] In this embodiment, if the height of the protective hem 151 is less than the height of the screw head 170, the screw head 170 protrudes and is more likely to be wrapped around the pull cord 160. Therefore, designing the height of the protective hem 151 to be greater than or equal to the height of the screw head 170 can effectively prevent the pull cord 160 from being wrapped around the screw head 170.

[0115] Optionally, the distance between the protective fold 151 and the screw head 170 is smaller than the diameter of the pull rope 160 .

[0116] In this embodiment, if the distance between the protective hem 151 and the screw head 170 is greater than or equal to the diameter of the drawstring 160, the drawstring 160 may become stuck in the distance between the protective hem 151 and the screw head 170 when the drawstring 160 is loose. Therefore, designing the distance between the protective hem 151 and the screw head 170 to be smaller than the diameter of the drawstring 160 effectively prevents the drawstring 160 from being entangled with the screw head 170.

[0117] Alternatively, as Figure 9 As shown, multiple screw fasteners are arranged along the length of the first side of the mounting plate 150; the length of the protective hem 151 is the same as the length of the mounting plate 150. Thus, to better secure the slide rail body 130, multiple screw fasteners can be arranged along the length of the mounting plate 150. Furthermore, since the length of the protective hem 151 is the same as the length of the mounting plate 150, the draw cord 160 can be prevented from becoming entangled in any of the screw heads 170.

[0118] Optionally, the slide rail assembly further includes a slide rail body 130. Figure 8As shown, the slide rail body 130 is provided with a guide groove 131, and the shelf body 100 can move along the guide groove 131; and the second side of the mounting plate 150 is connected to the outer wall of the guide groove 131, and the mounting plate 150 is perpendicular to the plane where the notch of the guide groove 131 is located.

[0119] In this embodiment, the shelf body 100 is connected to a pulley bracket. A guide wheel 111 is provided on the side of the pulley bracket. The guide wheel 111 is positioned within and movable along a guide slot 131. Furthermore, a mounting plate 150 is positioned to one side of the notch of the guide slot 131, extending in the same direction as the guide slot 131. Once the mounting plate 150 is secured with screws, the rail body 130 no longer wobble, facilitating stable movement of the shelf body 100 along the guide slot 131.

[0120] Optionally, a retaining groove 152 is formed between the protective folded edge 151 and the outer wall of the guide groove 131 at the notch. The rack further includes a drawstring fixing assembly that is engaged in the retaining groove 152 and is used to fix the drawstring 160. In this way, the protective folded edge 151 not only prevents the drawstring 160 from being entangled with the screw head 170, but also forms the retaining groove 152 with the outer wall at the notch, thereby providing a mounting location for the drawstring fixing assembly.

[0121] Optionally, the drawstring securing assembly includes an assembly portion 200 and a securing portion 230. Assembly portion 200 is provided with a latching protrusion that corresponds to latching slot 152. Fixing portion 230 is mounted on assembly portion 200 and is used to secure drawstring 160. Furthermore, the first end of latching slot 152 is provided through-hole, and the latching protrusion is inserted into the drawstring 152 from the first end. Here, the first end of latching slot 152 and the first end of guide slot 131 are located on the same side. When installing the drawstring securing assembly, the latching protrusion engages with the first end of latching slot 152, and the first insert 213 is inserted into the first end of guide slot 131, effectively securing the drawstring securing assembly.

[0122] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A drawstring fixing assembly, characterized in that: include: The assembly portion (200) is provided with an assembly groove (210) and a rope groove (220); wherein the assembly groove (210) is located on a first side of the assembly portion (200); a first end of the rope groove (220) is connected to the assembly groove (210), and a second end thereof is connected to a second side of the assembly portion (200); The fixing portion (230) is disposed in the assembly groove (210), with its first side facing the rope groove (220); and the first side of the fixing portion (230) is used to connect the first end of the pull rope (160), and the second end of the pull rope (160) extends to the second side of the assembly portion (200) through the rope groove (220).

2. The draw cord fixing assembly according to claim 1, characterized in that: Along the extending direction of the rope groove (220), the notch of the rope groove (220) is connected with the outside of the assembly part (200), and the pull rope (160) can be installed in the rope groove (220) through the notch.

3. The draw cord fixing assembly according to claim 2, wherein: An anti-slip structure is provided at the notch of the rope groove (220), and the anti-slip structure includes: A first undercut (221) is provided on a side wall of the slot; A second undercut (222) is provided on the other side of the slot wall at the slot opening and corresponds to the first undercut (221); Furthermore, an anti-slip gap is formed between the first undercut (221) and the second undercut (222), and the width of the anti-slip gap is smaller than the diameter of the pull rope (160).

4. The draw cord fixing assembly according to claim 2, wherein: A rope notch (223) is provided at the second end of the rope groove (220), and the rope notch (223) is arranged opposite to the notch of the rope groove (220).

5. The draw cord fixing assembly according to any one of claims 1 to 4, characterized in that: The bottom of the assembly groove (210) is recessed downward to form a positioning groove (211); A positioning protrusion (231) is provided on the first side of the fixing portion (230), and the positioning protrusion (231) corresponds to the positioning groove (211).

6. The draw cord fixing assembly according to claim 5, characterized in that: The first end of the pull rope (160) is connected to the positioning protrusion (231), and the first end of the rope groove (220) is connected to the positioning groove (211).

7. The draw cord fixing assembly according to claim 5, characterized in that: The bottom of the assembly groove (210) is further recessed downward to form a fixing groove (212), the fixing groove (212) is located on one side of the positioning groove (211), and the depth of the fixing groove (212) is smaller than that of the positioning groove (211); A fixing protrusion (232) is further provided on the first side of the fixing portion (230), and the fixing protrusion (232) corresponds to the fixing groove (212).

8. A shelf, characterized in that: The invention comprises a draw cord fixing assembly according to any one of claims 1 to 7.

9. The shelf according to claim 8, characterized in that: Also includes: Shelf body (100); The movable pulley assembly comprises a sliding bracket (110) and a movable pulley (120) connected to each other; wherein the shelf body (100) is connected to the sliding bracket (110), and the sliding bracket (110) can move along the slide rail assembly; and the movable pulley (120) is arranged on the pull rope (160) and close to its first end, and when the length of the pull rope (160) changes, the movable pulley (120) moves along the pull rope (160).

10. The shelf according to claim 9, characterized in that: The slide rail assembly includes: The slide rail body (130) is provided with a guide groove (131), and the first end of the guide groove (131) is through-set; The drawstring fixing assembly is arranged at the first end of the guide groove (131), and the assembly portion (200) is plugged into the first end of the guide groove (131) via a first plug block (213); Furthermore, the assembly portion (200) can interfere with the movable pulley assembly to serve as a first stopper.

11. The shelf according to claim 10, characterized in that: A first arc surface (201) is provided on the second side of the assembly portion (200), and the first arc surface (201) corresponds to the outer periphery of the movable pulley (120).

12. The shelf according to claim 10 or 11, characterized in that: The second end of the guide groove (131) is provided through-through; The shelf further includes a second stopper (240), and the second stopper (240) is plugged into the second end of the guide groove (131) through a second plug block (241); Furthermore, the second stopper (240) can interfere with the movable pulley assembly.

13. The shelf according to claim 12, characterized in that: The rail assembly also includes: A guide wheel (111) is provided on the side of the sliding bracket (110), is located in the guide groove (131) and can move along the same; Furthermore, the second inserting block (241) is provided with a second arc surface (242), and the second arc surface (242) corresponds to the outer periphery of the guide wheel (111).

14. A refrigerator, characterized in that: The invention comprises a shelf as claimed in any one of claims 8 to 13.

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