Lift adjustment device for a hanger wheel assembly and a hanger door

Abstract

The utility model provides a kind of lifting adjusting device and hang door for hoist wheel assembly, hoist wheel assembly includes suspension frame, lifting adjusting device includes: horizontal pull support, vertical connecting support, threaded adjusting piece and connecting shaft;The middle part of suspension frame is formed with the placement slot extending along the first direction;Limiting slot is formed in the bottom of placement slot in suspension frame;Suspension frame has adjustment side end plate, and threaded hole is formed on adjustment side end plate;Suspension frame has vertical slot hole, horizontal pull support is formed with oblique slot hole, the upper portion of vertical connecting support is formed with shaft hole, and connecting shaft is arranged in vertical slot hole, oblique slot hole and shaft hole;In the state that horizontal pull support moves horizontally, the bottom of horizontal pull support is abutted to the groove bottom of placement slot, the side of vertical connecting support is abutted to the side wall of limiting slot in horizontal moving direction, and horizontal pull support drives connecting shaft to slide in vertical slot hole and oblique slot hole, to realize the lifting of vertical connecting support.

Description

Technical Field

[0001] This utility model relates to the field of furniture hardware technology, and in particular to a lifting and adjusting device for a hanging wheel assembly and a sliding door. Background Technology

[0002] Sliding doors, with their high space utilization and flexible opening and closing, are widely used in home decoration, commercial spaces, and industrial buildings. The top-mounted roller assembly, as the core suspension component of the sliding door, directly affects the door's installation accuracy, smoothness of sliding, and stability. It primarily uses a lifting mechanism to calibrate the door height, ensuring a proper distance between the door and the ground and preventing friction or wobbling during operation. Currently, most top-mounted roller assemblies use a screw-type structure for height adjustment, rotating the screw to move the door up and down. This simple and low-cost design has become the mainstream solution in the industry.

[0003] However, existing screw-type lifting and adjusting mechanisms have significant technical defects: during long-term use, the screw and mating parts are prone to loosening due to the weight of the door, vibrations from frequent opening and closing, and thread wear, causing the door to slowly descend. This problem directly leads to a series of adverse consequences: the gap between the door and the ground or slide rail becomes smaller, significantly increasing the pushing and pulling resistance and making opening and closing more difficult; friction between the door and surrounding structures during operation not only exacerbates component wear but also generates noticeable noise; in severe cases, it may cause the door to slide and jam, or even pose a derailment safety hazard, greatly reducing the user experience and reliability of the product.

[0004] To address these issues, the industry has introduced improvements such as adding anti-loosening nuts and enhancing thread fit precision. However, these solutions have failed to fundamentally resolve the core contradiction: while some solutions improve short-term stability, they increase the complexity of lifting and adjusting operations, making it difficult for ordinary users to easily adjust; other solutions, due to structural design limitations, still cannot avoid thread loosening after long-term use. In summary, the existing lifting and adjusting mechanisms of hanging wheel assemblies fail to balance ease of adjustment with long-term stability, making it difficult to meet users' core needs for product practicality and durability. Developing a hanging wheel assembly that is easy to adjust and highly stable has become an urgent technical problem to be solved in this field. Utility Model Content

[0005] In view of this, the present invention provides a lifting and adjusting device for a hanging wheel assembly and a hanging sliding door to eliminate or improve one or more defects existing in the prior art.

[0006] One aspect of this utility model provides a lifting and adjusting device for a hanging wheel assembly, the hanging wheel assembly including a suspension frame, the lifting and adjusting device including: a horizontal bracing bracket, a vertical connecting bracket, a threaded adjusting member, and a connecting shaft; wherein, a placement groove extending along a first direction is formed in the middle of the suspension frame, the first direction being the length direction of the suspension frame; a limiting groove for the vertical connecting bracket to extend into is formed at the bottom of the placement groove of the suspension frame; the suspension frame has an adjusting side end plate, a threaded hole is formed on the adjusting side end plate, the projection of the threaded hole in the first direction passing through the adjusting side end plate; the suspension frame has a first main body side plate extending along the first direction, the first main body side plate forming a vertical slot, the horizontal bracing bracket forming an oblique slot, and the vertical connecting bracket... The upper part has a shaft hole, and the connecting shaft is arranged along a second direction and passes through the vertical slot, the oblique slot, and the shaft hole. The second direction is the width direction of the suspension bracket. The horizontal bracing has an adjusting member connecting part on the side near the adjusting side end plate, which is used to maintain a fixed connection with the threaded adjusting member in the first direction, so that the threaded adjusting member can drive the horizontal bracing to move laterally in the placement slot through its own rotational movement. In the state of the horizontal bracing moving laterally, the bottom of the horizontal bracing abuts against the bottom of the placement slot, and the side of the vertical connecting bracket abuts against the side wall of the limiting slot in the lateral movement direction. The horizontal bracing drives the connecting shaft to slide in the vertical slot and the oblique slot to realize the lifting and lowering of the vertical connecting bracket.

[0007] In some embodiments, the outer end of the threaded adjusting member is formed with an operating part for controlling the threaded adjusting member to rotate forward or backward; the inner end of the threaded adjusting member is formed with a bracket connecting part, and the adjusting member connecting part is directly connected to the bracket connecting part or connected through a pin.

[0008] In some embodiments, the threaded hole of the adjusting side end plate of the suspension bracket is inclined downward in the direction from the inside to the outside; the adjusting member connecting part of the cross brace is formed with an oblique connecting groove, and the bracket connecting part of the threaded adjusting member is connected in the oblique connecting groove by a self-formed flange or pin, so that the inclined threaded adjusting member can drive the cross brace to move in the first direction while rotating.

[0009] In some embodiments, the horizontal bracing has a U-shaped structure and two parallel second main body side plates, such that the vertical connecting bracket is installed between the two second main body side plates; the horizontal bracing also has a central base plate, which is located on the side of the horizontal bracing away from the adjusting side plate, and the central base plate is connected to the two second main body side plates.

[0010] In some embodiments, the central base plate of the horizontal bracing and the two second main body side plates are integrally formed, and the junction of the central base plate and the two second main body side plates is elastic, so that the two second main body side plates can be opened in a second direction on one side of the inclined connecting groove to insert the flange formed by the bracket connecting part of the threaded adjustment member.

[0011] In some embodiments, the flange formed by the bracket connection of the threaded adjustment member is a flange or column structure; the main extension direction of the flange of the threaded adjustment member intersects the extension direction of the threaded segment of the threaded adjustment member, and in the radial direction of the threaded segment, the maximum dimension of the flange is greater than the diameter of the threaded segment.

[0012] In some embodiments, the contact surface between the flange and the oblique connecting groove is configured as a plane.

[0013] In some embodiments, the horizontal bracing bracket is restricted to moving only along the first direction within the placement slot of the suspension bracket; or, the suspension bracket forms two or more vertical slots, the horizontal bracing bracket forms a corresponding number of oblique slots, and the vertical connecting bracket forms a corresponding number of shaft holes, which are respectively connected by a corresponding number of connecting shafts.

[0014] In some embodiments, the shaft segment connecting the connecting shaft to the vertical connecting bracket is provided with an anti-loosening structure, which includes a knurled or interference fit structure.

[0015] Another aspect of this utility model provides a sliding door, including the aforementioned lifting and adjusting device for driving the hanging wheel assembly.

[0016] This utility model provides a lifting and adjusting device for a hanging wheel assembly and a sliding door. Through the surface contact between the horizontal pull bracket and the suspension frame, the limiting side wall support, and the self-locking of the threaded parts, a dual anti-loosening mechanism of mechanical limiting and thread locking is formed, which greatly improves the vibration resistance. In addition, the precise fit between the oblique slot and the vertical slot of the lifting and adjusting device can achieve high-precision lifting control, meeting the requirements of quiet and stable operation of high-end sliding doors.

[0017] Additional advantages, objects, and features of this invention will be set forth in part in the description which follows, and will in part become apparent to those skilled in the art upon review of the description, or may be learned by practice of the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures specifically pointed out in the description and drawings.

[0018] Those skilled in the art will understand that the objectives and advantages achievable with this invention are not limited to those specifically described above, and that the above and other objectives achievable with this invention will become clearer from the following detailed description. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, do not constitute a limitation thereof. The components in the drawings are not drawn to scale but are merely for illustrating the principles of the present invention. For ease of illustration and description of certain parts of the present invention, corresponding portions in the drawings may be enlarged, i.e., may appear larger relative to other components in an exemplary device actually manufactured according to the present invention.

[0020] Figure 1 This is a schematic diagram of the structure of a hanging wheel assembly with a lifting and adjusting device in one embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram showing the separation of the lifting and adjusting device of the hanging wheel assembly and the roller-wheel frame assembly in one embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the lifting and adjusting device in one embodiment of the present invention.

[0023] Figure 4 This is a half-sectional view of the suspension frame in one embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of the vertical connecting bracket of the lifting and adjusting device in a lower position according to one embodiment of the present invention.

[0025] Figure 6 This is a schematic diagram of the vertical connecting bracket of the lifting and adjusting device in one embodiment of the present invention after it has been raised.

[0026] Figure 7 This is a schematic diagram of the structure of a sliding door in one embodiment of the present invention.

[0027] Figure label: 1. Suspension bracket; 101. Placement slot; 110. First main body side plate; 111. Vertical slot hole; 120. Adjustment side end plate; 121. Threaded hole; 131. Limiting slot; 132. Slot bottom; 2. Horizontal bracing; 210. Second main body side plate; 211. Angled slot; 212. Angled connecting slot; 220. Middle base plate; 3. Vertical connecting bracket; 301, shaft hole; 4. Threaded adjusting element; 410. Operating part; 420. Threaded section; 430. Flange; 5. Connecting shaft; 501. Knurled finish; 502. Optical shaft section; 6. Roller-wheel frame assembly; 7. Hanging rail; 8. Gantry. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. Here, the illustrative embodiments and descriptions of this utility model are used to explain the present utility model, but are not intended to limit the present utility model.

[0029] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0030] It should be emphasized that the term "including / comprises" as used herein refers to the presence of a feature, element, step, or component, but does not exclude the presence or addition of one or more other features, elements, steps, or components.

[0031] It should also be noted that, unless otherwise specified, the term "connection" in this article can refer not only to a direct connection, but also to an indirect connection involving an intermediary.

[0032] In the following description, embodiments of the present invention will be illustrated with reference to the accompanying drawings. In the drawings, the same reference numerals represent the same or similar parts, or the same or similar steps.

[0033] To address or mitigate the problem of easy loosening and settling caused by screw connections in existing sliding door assemblies, this invention provides a lifting and adjusting device for the sliding door assembly and a sliding door. Through the surface contact between the horizontal support bracket and the suspension frame, the limiting sidewall support, and the self-locking of the threaded components, a dual anti-loosening mechanism of mechanical limiting and threaded locking is formed, greatly improving vibration resistance. Furthermore, the precise fit between the oblique slot and the vertical slot in this lifting and adjusting device enables high-precision lifting control, meeting the requirements for quiet and stable operation of high-end sliding doors.

[0034] This solution addresses long-standing pain points in the industry, such as difficulty in adjustment and easy loosening. It is applicable to various types of sliding doors, including glass doors and heavy-duty metal doors, and is especially suitable for high-frequency usage scenarios (such as commercial venues and public buildings), demonstrating significant market promotion value. Application scenarios include, but are not limited to: adapting to sliding doors for balconies, kitchens, and partitions in home decoration scenarios to adjust the gap between the door and the ground and avoid dragging noise; large-size glass sliding doors in shopping malls and office buildings in commercial spaces to enhance the sense of space transparency and safety through precise installation; and heavy-duty sliding doors in industrial equipment scenarios that can withstand long-term heavy loads without loosening.

[0035] One aspect of this utility model provides a lifting and adjusting device for a hanging wheel assembly, such as... Figures 1-4 As shown, the hanging wheel assembly includes a suspension frame 1, and the lifting adjustment device includes a horizontal support bracket 2, a vertical connecting bracket 3, a threaded adjustment component 4, and a connecting shaft 5.

[0036] Figure 1 This is a schematic diagram of the structure of a hanging wheel assembly with a lifting and adjusting device according to an embodiment of the present invention. The hanging wheel assembly may include a lifting and adjusting device and two roller-wheel frame assemblies 6. The roller-wheel frame assemblies 6 may be installed on both sides of the suspension frame 1 in the width direction, specifically by means of a C-shaped structure and a guide rail groove structure to be snapped onto the suspension frame 1. Figure 2 This is a schematic diagram showing the separation of the lifting adjustment device and the roller-wheel frame assembly 6 in one embodiment of the present invention. The lifting adjustment device can be seen inside the assembly.

[0037] The suspension frame 1 has a placement groove 101 extending along a first direction in the middle. The length of the placement groove 101 is longer than that of the horizontal support 2. The first direction is the length direction of the suspension frame 1, which provides space for the horizontal support 2 to move laterally. The length direction or the first direction mentioned here is also the sliding direction of the entire hanging wheel assembly.

[0038] refer to Figure 4 The suspension frame 1 has a limiting groove 131 formed at the bottom of the placement groove 101 for the vertical connecting bracket 3 to extend into. The side wall of the limiting groove 131 can limit and constrain the lateral displacement of the vertical connecting bracket 3 to ensure verticality during lifting.

[0039] The suspension frame 1 has an adjustment side end plate 120, on which a threaded hole 121 is formed. The projection of the threaded hole 121 in the first direction passes through the adjustment side end plate 120; it can cooperate with the threaded adjustment member 4 to form a lateral drive fulcrum.

[0040] The suspension frame 1 has a first main body side plate 110 extending along the first direction, the first main body side plate 110 having a vertical slot 111, the horizontal bracing 2 having an oblique slot 211, and the upper part of the vertical connecting bracket 3 having a shaft hole 301. The connecting shaft 5 is arranged along a second direction and passes through the vertical slot 111, the oblique slot 211, and the shaft hole 301. The second direction is the width direction of the suspension frame 1. The vertical slot 111 of the first main body side plate 110, the oblique slot 211 of the horizontal bracing 2, and the shaft hole 301 of the vertical connecting bracket 3 are linked through the connecting shaft 5 to form a transmission basis for "lateral movement-vertical lifting".

[0041] The horizontal support bracket 2 has an adjusting member connecting portion formed on the side near the adjusting end plate 120, which is used to maintain a fixed connection with the threaded adjusting member 4 in the first direction, so that the threaded adjusting member 4 can drive the horizontal support bracket 2 to move in the placement groove 101 in the first direction through its own rotational movement. In this embodiment, rotating the threaded adjusting member 4 causes its threads to engage with the threaded hole 121 of the suspension bracket 1, pushing the horizontal support bracket 2 to move laterally (left / right) along the placement groove 101. The adjusting member connecting portion ensures that the horizontal support bracket 2 and the threaded member move synchronously.

[0042] When the horizontal support 2 is in a lateral movement state, the bottom of the horizontal support 2 abuts against the bottom 132 of the placement groove 101, and the side of the vertical connecting support 3 abuts against the side wall of the limiting groove 131 in the lateral movement direction. The horizontal support 2 drives the connecting shaft 5 to slide in the vertical slot 111 and the oblique slot 211 to realize the lifting and lowering of the vertical connecting support 3.

[0043] In this embodiment, when the horizontal support 2 moves, the oblique slot 211 drives the connecting shaft 5 to move synchronously. Because the vertical slot 111 restricts the lateral freedom of the connecting shaft 5, it forces the connecting shaft 5 to slide up and down along the vertical slot 111, thereby driving the vertical connecting support 3 to rise and fall. The sidewall of the limiting slot 131 constrains the lateral offset of the vertical connecting support 3, and the bottom 132 of the placement slot 101 supports the horizontal support 2, forming a three-dimensional limiting structure. The self-locking function of the threaded adjustment component 4 locks the position of the horizontal support 2, ensuring the stability of the state after rising and falling and avoiding settlement.

[0044] In this embodiment, the threaded adjustment component 4 controls the displacement of the horizontal support bracket 2 by the depth of screwing in, and provides reliable positioning by utilizing the self-locking characteristic of the thread to avoid loosening; the connecting shaft 5 passes through the vertical slot 111, the oblique slot 211 and the shaft hole 301 along the second direction; when the horizontal support bracket 2 moves laterally, due to the angle design of the oblique slot 211, the connecting shaft 5 is forced to slide up and down in the vertical slot 111 to realize the change of movement direction and ensure that the lifting process is smooth and without jamming.

[0045] In this embodiment of the invention, the angle design of the oblique slot 211 and the vertical slot 111 establishes a proportional relationship between lateral and vertical displacements. Geometric constraints transform the rotational motion of the threaded pair into linear lifting motion, avoiding the axial load concentration problem of traditional screws. This invention abandons a single screw connection, utilizing the surface contact between the horizontal support bracket 2 and the suspension bracket 1, the side wall support of the limiting slot 131, and the self-locking of the threaded component to form a dual anti-loosening mechanism of mechanical limiting and thread locking, improving vibration resistance. The cooperative design of the limiting slot 131 and the placement slot 101 disperses the load generated by the door's self-weight, reducing single-point stress wear and extending structural lifespan. This invention allows direct operation of the threaded adjustment component 4 from the side end of the suspension bracket 1 without disassembling the door or slide rail, shortening adjustment time and significantly reducing installation and maintenance costs. Through the precise cooperation of the oblique slot 211 and the vertical slot 111, this invention achieves high-precision lifting accuracy control, meeting the requirements of quiet and stable operation for high-end sliding doors.

[0046] Optionally, the included angle between the oblique slot 211 and the vertical slot 111 can be designed to be 45°, which can realize a 1:1 transmission of lateral and vertical displacement.

[0047] In some embodiments, such as Figure 3 As shown, the outer end of the threaded adjusting member 4 has an operating part 410 for controlling the threaded adjusting member 4 to rotate forward or backward. The operating part 410 can adopt a structure that is compatible with conventional tools, such as an internal hexagonal hole, an external hexagonal head, a cross slot, or a slotted head, etc., so that rotation operation can be achieved without special equipment, thus lowering the adjustment threshold.

[0048] Furthermore, the inner end of the threaded adjusting member 4 is formed with a bracket connecting part, which is directly connected to the bracket connecting part or connected by a pin. The bracket connecting part is the key structure for realizing the linkage between the threaded adjusting member 4 and the horizontal tie bracket 2. It needs to form a stable fit with the adjusting member connecting part on the horizontal tie bracket 2 to ensure that the rotational motion of the threaded adjusting member 4 can be converted into the lateral linear motion of the horizontal tie bracket 2.

[0049] The direct connection mentioned here refers to the fixing method using snap-fit, interference fit or welding; for example, the bracket connection part is equipped with a slot or buckle, and it is fixed by snap-fit. Its advantages are compact structure, high transmission efficiency and no relative displacement loss.

[0050] The pin connection described here refers to a rotatable hinge structure formed by a pin passing through corresponding holes in the adjusting component connection and the bracket connection. This method allows for slight angular compensation between the two during transmission, avoiding jamming caused by assembly errors or deformation under stress, while also facilitating disassembly and maintenance and improving structural fault tolerance.

[0051] In this embodiment of the invention, the threaded adjusting member 4 can be installed horizontally or inclined downwards. A horizontal arrangement means that the threaded adjusting member 4 is installed horizontally, with its axis parallel to the first direction (the length direction of the suspension frame 1). In this case, the threaded hole 121 of the adjusting side end plate 120 of the suspension frame 1 is horizontally through, and the operating part 410 of the threaded adjusting member 4 is located on the side of the suspension frame 1, providing ample operating space. When height adjustment is required, the door body needs to be moved to the open position at the edge of the guide rail.

[0052] To facilitate adjustment of the door height, the threaded adjusting member 4 is installed in a downward tilting direction from the inside out. In some embodiments, such as Figures 3-6 As shown, the threaded hole 121 of the adjusting end plate 120 of the suspension bracket 1 is inclined downward in the direction from the inside to the outside. The downward inclined installation method can make the outer end (operating part 410) of the threaded adjustment part 4 deviate from the side area of ​​the suspension bracket 1, avoid possible interference parts (such as slide rails, door frames, etc.), and reserve sufficient space for tool operation, which is especially suitable for scenarios with narrow installation space.

[0053] Furthermore, the adjusting member connecting portion of the horizontal bracing 2 is formed with an oblique connecting groove 212. The bracket connecting portion of the threaded adjusting member 4 is connected to the oblique connecting groove 212 via a self-formed flange 430 or a pin, so that the inclined threaded adjusting member 4 can drive the horizontal bracing 2 to move in the first direction while rotating. The oblique arrangement allows the load borne by the threaded adjusting member 4 to be transmitted more evenly to the horizontal bracing 2. Through the surface contact fit of the oblique connecting groove 212, local stress concentration is dispersed, reducing component wear. At the same time, the mechanical characteristics of the oblique structure are utilized to reduce the operating torque during rotation adjustment, making adjustment more effortless.

[0054] In this embodiment, the way the bracket connecting part and the oblique connecting groove 212 are matched (flange 430 or pin) allows for slight relative slippage and angle compensation during transmission, which can accommodate slight dimensional errors generated during assembly, reduce assembly accuracy requirements, and improve product qualification rate.

[0055] In some embodiments, such as Figure 3 As shown, the horizontal support bracket 2 has a U-shaped structure and two parallel second main body side plates 210, so that the vertical connecting bracket 3 is installed between the two second main body side plates 210. The two second main body side plates 210 are arranged opposite each other along the second direction (the width direction of the suspension bracket 1) to form a receiving space for the vertical connecting bracket 3 to be installed between them. Through the limiting effect of the two side plates, the vertical connecting bracket 3 is ensured to maintain a vertical posture during the lifting and lowering process, avoiding lateral displacement.

[0056] Furthermore, the horizontal bracing 2 also has a central base plate 220, which is located on the side of the horizontal bracing 2 away from the adjusting end plate 120, and is connected to the two second main body side plates 210. The central base plate 220 can enhance the overall structural strength of the horizontal bracing 2.

[0057] In some embodiments, the central base plate 220 of the horizontal bracing 2 and the two second main body side plates 210 are integrally formed, such as by stamping, injection molding, or extrusion molding. The junction of the central base plate 220 and the two second main body side plates 210 is elastic, allowing the two second main body side plates 210 to be opened in a second direction on one side of the oblique connecting groove 212 to accommodate the flange 430 formed by the bracket connecting portion of the threaded adjustment member 4. The elasticity described here can be achieved by means of material properties (such as elastic metal materials) or structural optimization (such as arc transition or thickness design), so that the two second main body side plates 210 have the characteristic of being elastically openable on the side where the oblique connecting groove 212 is located, which facilitates the assembly of the bracket connecting portion.

[0058] During assembly, the elasticity of the junction between the central base plate 220 and the second main body side plate 210 allows for slight application of force to both sides to widen the gap between the two second main body side plates 210 on one side of the oblique connecting groove 212. Without disassembling other components, the self-forming flange 430 of the threaded adjustment component 4 bracket connection can be smoothly inserted into the oblique connecting groove 212. After releasing the applied force, the elastic structure causes the second main body side plate 210 to return to its original position, and the flange 430 is stably confined within the oblique connecting groove 212, forming a reliable fit and completing the rapid assembly.

[0059] In some embodiments, such as Figure 3 As shown, the flange 430 formed by the bracket connection of the threaded adjusting component 4 can be either a flange or a columnar structure. A flange structure means the flange 430 is an annular disc extending circumferentially around the axis of the threaded adjusting component 4, with a flat end face, forming a surface contact fit with the oblique connecting groove 212, resulting in more uniform force distribution. A columnar structure means the flange 430 is a columnar protrusion protruding radially along the threaded adjusting component 4, and can be configured with three or more protrusions, forming a line contact fit with the oblique connecting groove 212, resulting in a more compact structure and lower sliding resistance.

[0060] Furthermore, the main extension direction of the flange 430 of the threaded adjusting member 4 intersects the extension direction of the threaded segment 420 of the threaded adjusting member 4, such as being perpendicular or nearly perpendicular. In the radial direction of the threaded segment 420, the maximum dimension of the flange 430 is larger than the diameter of the threaded segment 420 to form a radial limiting step, which can be firmly locked in the inclined connecting groove 212 to prevent the threaded adjusting member 4 from moving along its own axis and ensure connection stability.

[0061] In some embodiments, the contact surfaces of the flange 430 and the inclined connecting groove 212 are configured as planes. Optionally, the inclination angles of the two planes are completely consistent, ensuring a fully fitted surface contact after assembly. When the threaded adjusting member 4 moves along the inclined direction, the plane of the flange 430 and the plane of the inclined connecting groove 212 are tightly fitted, and the force is uniformly transmitted through the entire contact surface, avoiding local stress concentration. The consistent inclination angle ensures that the two maintain surface contact during relative sliding, without jamming or force shift, ensuring the smoothness of power transmission. Optionally, the planar contact design can control the surface roughness to Ra0.8-Ra1.6μm, reducing frictional resistance during sliding and improving the uniformity of force transmission.

[0062] In some embodiments, the horizontal brace 2 is restricted to moving only along the first direction within the placement slot 101 of the suspension frame 1. The horizontal brace 2 is assembled within the placement slot 101 of the suspension frame 1, with the slot wall of the placement slot 101 tightly fitting against the side wall of the horizontal brace 2. This, combined with the support and limiting effect of the bottom 132 of the placement slot 101 on the horizontal brace 2, forms a bidirectional guiding constraint, preventing the horizontal brace 2 from shifting or swaying in the second direction (width direction of the suspension frame 1) or vertically, ensuring that its movement trajectory is precise and controllable.

[0063] In other embodiments, such as Figures 2-6 As shown, the suspension bracket 1 has two or more vertical slots 111, the horizontal bracing 2 has a corresponding number of oblique slots 211, and the vertical connecting bracket 3 has a corresponding number of shaft holes 301, all connected by a corresponding number of connecting shafts 5. Multiple sets of connecting shafts 5 share the weight of the door and the operating load, significantly improving the load-bearing capacity compared to a single-shaft structure, making it suitable for heavy-duty sliding door scenarios. Multi-point synchronous transmission ensures uniform force distribution during the lifting and lowering of the vertical connecting bracket 3, eliminating tilting and swaying, resulting in smoother door sliding and significantly reduced noise. Even if a single set of connecting shafts 5 or slots experiences slight wear, the remaining sets can still transmit power normally, improving the overall structural reliability and fault tolerance.

[0064] In some embodiments, the shaft segment connecting the connecting shaft 5 and the vertical connecting bracket 3 is provided with an anti-loosening structure to suppress relative loosening during long-term vibration and frequent transmission, ensuring synchronous movement of the connecting shaft 5 and the vertical connecting bracket 3, and avoiding power transmission failure or accelerated component wear. Optionally, the anti-loosening structure includes a knurled 501 or an interference fit structure. Figure 3As shown, regular knurling patterns (such as straight lines or a grid pattern) are machined on the outer periphery of the shaft segment that mates with the shaft hole 301 of the vertical connecting bracket 3. The outer diameter of the shaft segment after knurling is slightly larger than the inner diameter of the shaft hole 301. During assembly, the knurling patterns and the inner wall of the shaft hole 301 are squeezed and engaged to form an anti-loosening constraint. The two sides of the knurling 501 of the connecting shaft 5 are the smooth shaft segments 502, so that they have less friction when sliding in the vertical slot 111 and the oblique slot 211.

[0065] Optionally, the interference fit structure refers to precisely controlling the dimensional difference between the outer diameter of the connecting shaft 5 and the inner diameter of the shaft hole 301 of the vertical connecting bracket 3, so that the outer diameter of the shaft section is slightly larger than the inner diameter of the shaft hole 301 (the interference can be set to 0.01-0.05mm). After assembly, the radial pressure generated by the elasticity of the material is used to make the two form a tight and fixed connection, preventing relative rotation or movement.

[0066] The following is combined Figure 5 and Figure 6 The lifting control process in the embodiments of this utility model will be further explained. Figure 5 This is a schematic diagram of the vertical connecting bracket 3 of the lifting and adjusting device in a lower position according to one embodiment of the present invention. Figure 6 This is a schematic diagram of the vertical connecting bracket 3 of the lifting and adjusting device in one embodiment of the present invention after it has been raised.

[0067] refer to Figure 5 The vertical connecting bracket 3 is in a low position, with its bottom connected to the door body at a low height, corresponding to the initial installation state where the distance between the door body and the ground is small. The horizontal bracing bracket 2 is in the initial position near the adjustment side end plate 120 in the placement groove 101 of the suspension bracket 1. The screw depth of the threaded adjustment part 4 is shallow, and the flange 430 of its bracket connection part is located near the bottom end of the oblique connecting groove 212. The connecting shaft 5 passes through the lower part of the vertical slot 111, the inner end of the oblique slot 211, and the shaft hole 301 of the vertical connecting bracket 3. Due to the position constraint of the horizontal bracing bracket 2, the connecting shaft 5 is restricted to the low position area of ​​the vertical slot 111.

[0068] from Figures 5 to 6The state transition is the lifting process: using the operating part 410 (such as an internal hexagonal hole) at the outer end of the threaded adjusting part 4, the threaded adjusting part 4 is rotated clockwise. Since the threaded adjusting part 4 engages with the inclined threaded hole 121 of the adjusting side end plate 120 of the suspension frame 1, the rotational motion is converted into axial movement along the inclined direction of the threaded hole 121, and the threaded adjusting part 4 is gradually screwed into the suspension frame 1; the flange 430 at the inner end of the threaded adjusting part 4 transmits thrust through the planar contact with the inclined connecting groove 212, pushing the horizontal support 2 to slide smoothly in the placement groove 101 along the first direction (away from the adjusting side end plate 120, to the left). Constrained by the unidirectional limiting of the placement groove 101, the horizontal support 2 only moves laterally without offset or swaying. When the horizontal support 2 moves, its oblique slot 211 synchronously drives the connecting shaft 5 to move. Because the connecting shaft 5 is vertically constrained by the vertical slot 111 (allowing only upward and downward sliding), the lateral displacement of the oblique slot 211 is transmitted through the inclined surface, forcing the connecting shaft 5 to slide upward along the vertical slot 111, and simultaneously move from the inner end to the outer end (near the adjusting end plate 120) within the oblique slot 211. The connecting shaft 5 and the shaft hole 301 of the vertical connecting support 3 maintain synchronous movement through knurling 501 or interference fit. The upward sliding of the connecting shaft 5 directly drives the entire vertical connecting support 3 to rise vertically along the limiting groove 131, ultimately reaching... Figure 6 The raised state is shown. At this time, the bottom of the vertical connecting bracket 3 drives the door to rise synchronously, and the distance between the door and the ground increases to the preset height.

[0069] Understandably, by switching the contact position between the flange 430 and the oblique connecting groove 212 to the upper end of the oblique connecting groove 212, the stress state of the planar contact remains unchanged, distributing the load and avoiding localized wear. If it is necessary to reduce the height of the door, simply reverse the operation of the threaded adjusting component 4.

[0070] Another aspect of this utility model provides a sliding door, including the aforementioned lifting and adjusting device for driving the hanging wheel assembly. For example... Figure 7 As shown, the sliding door includes a hanging rail 7, a hanging wheel assembly, and a door frame 8.

[0071] The hanging rail 7 is fixed to the top of the building, providing a sliding track for the hanging wheel assembly. Its internal structure is adapted to the pulley mechanism of the hanging wheel assembly, ensuring smooth left and right sliding of the door without jamming, while also reserving space for side operation of the lifting and adjusting device. The hanging wheel assembly, as the core transmission component, may include a suspension frame 1, a roller mechanism, and a lifting and adjusting device. The suspension frame 1 slides with the hanging rail 7 through the roller mechanism. The lifting and adjusting device is integrated into the lower part of the suspension frame 1 and directly connected to the door frame 8, undertaking the dual functions of door suspension and height adjustment. The door frame 8 is the main frame of the sliding door and can be adapted to door panels such as glass and metal sheets according to the application scenario. Its top is fixedly connected to the vertical connecting bracket 3 of the lifting and adjusting device, and the overall height of the door is adjusted by raising and lowering the vertical connecting bracket 3. The lifting and adjusting device adopts the aforementioned collaborative structure of the horizontal pull bracket 2, the vertical connecting bracket 3, the threaded adjustment component 4, and the connecting shaft 5. It is the core functional module for achieving precise adjustment of the door height, solving the pain points of traditional sliding doors that are prone to downward movement and cumbersome adjustment.

[0072] In this invention, features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, and / or combined with or in place of features of other embodiments.

[0073] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. For those skilled in the art, various modifications and variations can be made to the embodiments of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lifting and adjusting device for a hanging wheel assembly, the hanging wheel assembly including a suspension frame (1), characterized in that, The lifting and adjusting device includes: a horizontal bracing bracket (2), a vertical connecting bracket (3), a threaded adjusting component (4), and a connecting shaft (5); Among them, a placement groove (101) extending along a first direction is formed in the middle of the suspension frame (1); the first direction is the length direction of the suspension frame (1); The suspension bracket (1) has a limiting groove (131) formed at the bottom of the placement groove (101) for the vertical connecting bracket (3) to extend into. The suspension bracket (1) has an adjustment side end plate (120) with a threaded hole (121) formed on the adjustment side end plate (120), and the projection of the threaded hole (121) in the first direction passes through the adjustment side end plate (120). The suspension bracket (1) has a first main body side plate (110) extending along a first direction, the first main body side plate (110) having a vertical slot (111), the horizontal bracing bracket (2) having an oblique slot (211), the upper part of the vertical connecting bracket (3) having a shaft hole (301), and the connecting shaft (5) being arranged along a second direction and passing through the vertical slot (111), the oblique slot (211) and the shaft hole (301), the second direction being the width direction of the suspension bracket (1); The horizontal bracing bracket (2) has an adjustment member connection part on the side near the adjustment side end plate (120) for maintaining a fixed connection with the threaded adjustment member (4) in the first direction, so that the threaded adjustment member (4) can drive the horizontal bracing bracket (2) to move laterally in the placement groove (101) through its own rotational movement; When the horizontal support (2) moves laterally, the bottom of the horizontal support abuts against the bottom (132) of the placement groove (101), and the side of the vertical connecting support (3) abuts against the side wall of the limiting groove (131) in the lateral movement direction. The horizontal support (2) drives the connecting shaft (5) to slide in the vertical slot (111) and the oblique slot (211) to realize the lifting and lowering of the vertical connecting support (3).

2. The lifting and adjusting device for a hanging wheel assembly according to claim 1, characterized in that, The outer end of the threaded adjusting member (4) is provided with an operating part (410) for controlling the threaded adjusting member (4) to rotate forward or backward; The inner end of the threaded adjustment member (4) is formed with a bracket connection part, and the adjustment member connection part is directly connected to the bracket connection part or connected by a pin.

3. The lifting and adjusting device for a hanging wheel assembly according to claim 2, characterized in that, The threaded hole (121) of the adjusting side end plate (120) of the suspension bracket (1) is inclined downward in the direction from the inside to the outside; The adjusting part of the horizontal bracing bracket (2) has an oblique connecting groove (212). The bracket connecting part of the threaded adjusting part (4) is connected in the oblique connecting groove (212) by a self-formed flange (430) or a pin, so that the threaded adjusting part (4) installed at an angle can drive the horizontal bracing bracket (2) to move in the first direction while rotating.

4. The lifting and adjusting device for a hanging wheel assembly according to claim 3, characterized in that, The horizontal bracing (2) has a U-shaped structure and two parallel second main body side plates (210) so that the vertical connecting bracket (3) is installed between the two second main body side plates (210); The horizontal bracing bracket (2) also has a central base plate (220) located on the side of the horizontal bracing bracket (2) away from the adjustment side end plate (120), and the central base plate (220) is connected to two second main body side plates (210).

5. The lifting and adjusting device for a hanging wheel assembly according to claim 4, characterized in that, The central base plate (220) of the horizontal bracing bracket (2) and the two second main body side plates (210) are integrally formed. The junction of the central base plate (220) and the two second main body side plates (210) is elastic, so that the two second main body side plates (210) can be opened in the second direction on one side of the inclined connecting groove (212) to insert the flange (430) formed by the bracket connecting part of the threaded adjustment member (4).

6. The lifting and adjusting device for a hanging wheel assembly according to claim 3 or 4, characterized in that, The flange (430) formed by the bracket connection of the threaded adjustment component (4) is a flange or column structure; The main extension direction of the flange (430) of the threaded adjustment member (4) intersects the extension direction of the threaded segment (420) of the threaded adjustment member (4). In the radial direction of the threaded segment (420), the maximum dimension of the flange (430) is greater than the diameter of the threaded segment (420).

7. The lifting and adjusting device for a hanging wheel assembly according to claim 6, characterized in that, The contact surface between the flange (430) and the oblique connecting groove (212) is configured as a plane.

8. The lifting and adjusting device for a hanging wheel assembly according to claim 1, characterized in that, The horizontal bracing bracket (2) is restricted within the placement slot (101) of the suspension bracket (1) to move only in the first direction; or, The suspension bracket (1) has two or more vertical slots (111), the horizontal bracing bracket (2) has a corresponding number of oblique slots (211), and the vertical connecting bracket (3) has a corresponding number of shaft holes (301), which are connected by a corresponding number of connecting shafts (5).

9. The lifting and adjusting device for a hanging wheel assembly according to claim 1, characterized in that, The shaft segment connecting the connecting shaft (5) and the vertical connecting bracket (3) is provided with an anti-loosening structure, which includes knurling (501) or an interference fit structure.

10. A sliding door, comprising a lifting and adjusting device for driving a suspension wheel assembly as described in any one of claims 1-9.

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