A movable static support and a furniture off the ground

Abstract

The utility model relates to life furniture technical field, specifically disclose a dynamic static changeable supporting piece and ground furniture, include: support cylinder, enclose and form the accommodation cavity and guide groove, telescopic wheel group, including gyro wheel support and gyro wheel body, wherein, telescopic wheel group has when being driven to move upwards relative to support cylinder, synchronously rotates with guide groove relative to support cylinder, until gyro wheel support is accomodated in the retraction state in accommodation cavity, and has when moving downwards relative to support cylinder, synchronously rotates with guide groove relative to support cylinder, until gyro wheel support is extended to the extension state outside accommodation cavity. The utility model provides dynamic static changeable supporting piece and ground furniture, can consider the load bearing reliability and mobile flexibility simultaneously, to satisfy the dual demand of practicality and convenience of modern home.

Description

Technical Field

[0001] This utility model relates to the field of living furniture technology, and in particular to a movable and static interchangeable support component and a piece of furniture that is off the ground. Background Technology

[0002] In the field of furniture design, the support structure is a core component that ensures the stability and practicality of a product. Large furniture such as beds, sofas, and wardrobes generally rely on bottom supports for load-bearing and positioning. Currently, the mainstream support solutions in the industry are mainly divided into two categories, but their respective functional limitations are no longer sufficient to meet modern users' dual needs for furniture flexibility and reliability.

[0003] One type is the traditional fixed support leg, mostly made of solid wood, metal, or high-strength plastic. By increasing the contact area, it distributes the weight of the furniture, providing excellent load-bearing capacity and effectively preventing moisture and wear issues caused by the bottom of the furniture directly contacting the ground. It is suitable for long-term static use scenarios. However, fixed support legs do not have a movable function. When it is necessary to adjust the position of the furniture (such as cleaning the space underneath or optimizing the layout of the room), multiple people are required to move it. This is not only cumbersome, but also prone to scratching the floor due to friction. It is especially unsuitable for small apartments or those who frequently need to adjust the layout of their home.

[0004] Another type is the universal wheel support structure. Although it can make furniture move flexibly and simplify the position adjustment and cleaning process, its load-bearing capacity is generally weak due to the structural strength of the rollers and the bracket (most products have a rated load of less than 300N). When supporting large furniture (such as solid wood beds and fabric sofas) for a long time, problems such as roller deformation and bracket breakage are likely to occur, which will cause the furniture to tilt, reduce stability, and even pose safety hazards.

[0005] In summary, existing furniture support solutions cannot simultaneously ensure both load-bearing reliability and mobility. The market urgently needs a support component that can flexibly switch between fixed support and caster wheel functionality to solve the aforementioned technical pain points and meet the dual demands of modern homes for practicality and convenience.

[0006] The information disclosed in this background section is included only to enhance the understanding of the context of this disclosure, and therefore may contain information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0007] One objective of this invention is to provide a movable and static interchangeable support component and a piece of furniture that is off the ground, which can simultaneously ensure load-bearing reliability and mobility, so as to meet the dual needs of modern homes for practicality and convenience.

[0008] To achieve the above objectives, this utility model provides a dynamic-static interchangeable support member, comprising:

[0009] A supporting cylinder is provided to form a downward-facing receiving cavity. The cavity wall is provided with staggered, circulating, and continuously closed guide grooves.

[0010] A telescopic wheel assembly, comprising a roller bracket located within the accommodating cavity and rotatably connected to the support cylinder along with the guide groove, and a roller body rotatably mounted at the bottom of the roller bracket;

[0011] The telescopic wheel assembly has a retracted state where, when driven upward relative to the support cylinder, it rotates synchronously with the guide groove relative to the support cylinder until the roller bracket is housed in the accommodating cavity; and an extended state where, when moving downward relative to the support cylinder, it rotates synchronously with the guide groove relative to the support cylinder until the roller bracket extends out of the accommodating cavity.

[0012] Optionally, the guide groove includes a plurality of repeating groove segment units, the groove segment unit including:

[0013] A steeply inclined descending groove segment, the upper end of which is connected to the previous groove segment unit, and the lower end of which extends downward at an inclination.

[0014] The small-inclination lifting trough section has its lower end connected to the lower end of the large-inclination lowering trough section. The upper end of the small-inclination lifting trough section extends upward at an angle away from the large-inclination lowering trough section. Furthermore, the height of the upper end of the small-inclination lifting trough section is lower than the height of the upper end of the large-inclination lowering trough section.

[0015] A small vertical descending groove section, the upper end of which is connected to the upper end of a small inclined lifting groove section, and the lower end of which extends vertically downward;

[0016] The slightly inclined descending trough section has its upper end connected to the upper end of the slightly vertical descending trough section, and its lower end extends downwards at an inclination away from the slightly inclined lifting trough section.

[0017] A highly inclined lifting trough section, the lower end of which is connected to the lower end of a slightly inclined lowering trough section, the upper end of which extends upward at an angle away from the slightly inclined lowering trough section, and the height of the upper end of the highly inclined lifting trough section is higher than the height of the upper end of the highly inclined lowering trough section.

[0018] A large vertical descent trough section, the upper end of which is connected to the upper end of the large inclined lifting trough section, and the lower end of which extends vertically downward and connects to the next trough section unit.

[0019] Optionally, the circumferential surface of the roller bracket is provided with a guide protrusion that extends into the guide groove and slides along the guide groove;

[0020] When the guide post moves to the upper end connection point of the large inclined lifting groove section and the large vertical descending groove section, the telescopic wheel assembly is in the retracted state.

[0021] When the guide post moves to the upper end connection point of the small inclined lifting groove section and the small vertical lowering groove section, the telescopic wheel assembly is in the extended state.

[0022] Optional, also includes:

[0023] A follower limiting member is fixed to the top of the roller bracket;

[0024] A fixed limiting plate is fixedly disposed in the accommodating cavity and is provided with a limiting groove for the follower limiting member to pass through;

[0025] in,

[0026] When the telescopic wheel assembly is in the retracted state, the follower limiting member is located above the fixed limiting plate and is offset from the limiting groove to restrict the telescopic wheel assembly from moving downward relative to the supporting cylinder.

[0027] When the telescopic wheel assembly is in the extended state, the follower limiting member aligns with the limiting groove and moves downward through the limiting groove.

[0028] Optionally, the limiting groove is a straight groove, and the follower limiting component includes a horizontal bar portion with a size smaller than the limiting groove, and a vertical bar portion connecting the horizontal bar portion to the support cylinder.

[0029] Optionally, the number of slot segment units is four.

[0030] Optionally, the number of guide protrusions is four, and the four guide protrusions are evenly spaced around the circumferential surface of the roller bracket.

[0031] Optionally, the top surface of the support cylinder is provided with a recessed mounting screw hole or an outwardly protruding mounting bolt.

[0032] Optionally, the bottom surface of the support cylinder is provided with an annular anti-slip pad.

[0033] On the other hand, a piece of furniture that is off the ground is provided, including a furniture body and a movable and static interchangeable support located on the bottom surface of the furniture body.

[0034] The beneficial effects of this utility model are: it provides a movable and static interchangeable support component and a piece of furniture that is off the ground.

[0035] When it is necessary to convert the movable support component from a mobile "moving" state to a fixed support "static" state, an external force is applied to cause the roller bracket to move the roller body upward relative to the support cylinder within the guide groove. Because the guide groove is a staggered and continuously looping closed structure, the roller bracket, while moving upward, is forcibly guided by the curved surface of the guide groove, generating a rotational motion around the axis of the support cylinder. During this process, the roller body is gradually lifted and retracted. Finally, the roller bracket is completely housed within the receiving cavity of the support cylinder, the roller body is off the ground, and the weight of the entire furniture body is supported by the support cylinder, achieving stable static fixation. This is the retracted state.

[0036] When it is necessary to change the movable support from a fixed "static" state to a movable "dynamic" state, the roller bracket moves downward relative to the support cylinder along the guide groove. Similarly, guided by the staggered guide grooves, the downward movement is simultaneously converted into rotational motion. As the roller bracket rotates downward, it gradually extends out of the receiving cavity. Finally, the roller body descends to contact the ground and lifts the support cylinder, causing the lower end of the support cylinder to leave the ground. The weight of the movable support is then borne by the roller body, allowing the furniture body to be easily moved via the roller body. This is the extended state.

[0037] Therefore, the movable and static interchangeable support component and the off-ground furniture provided by this utility model combine vertical linear motion and rotational motion into one through a unique circulating closed guide groove design, realizing a smooth and reliable transition between the two states of support and movement. Thus, it can simultaneously take into account load-bearing reliability and movement flexibility, so as to meet the dual needs of modern homes for practicality and convenience. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 A schematic diagram of the internal structure of the interchangeable dynamic and static support provided in the embodiment;

[0040] Figure 2 An exploded structural diagram of the interchangeable static and dynamic support member provided in the embodiment;

[0041] Figure 3 A schematic diagram of the position state of the guide protrusion provided in the embodiment;

[0042] Figure 4 This is a schematic diagram of the state of the follow-up limiting component provided in the embodiment.

[0043] In the picture:

[0044] 1. Support cylinder; 101. Receiving cavity; 102. Guide groove; 1021. Largely inclined descent groove section; 1022. Slightly inclined lifting groove section; 1023. Slightly inclined vertical descent groove section; 1024. Slightly inclined descent groove section; 1025. Largely inclined lifting groove section; 1026. Largely inclined vertical descent groove section; 103. Mounting screw holes; 104. Annular anti-slip pad;

[0045] 2. Telescopic wheel assembly; 201. Roller bracket; 2011. Guide post; 202. Roller body;

[0046] 3. Follow-up limiting component; 301. Horizontal bar section; 302. Vertical bar section;

[0047] 4. Fixed limiting plate; 401. Limiting groove. Detailed Implementation

[0048] In this utility model, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this utility model. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this utility model, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0049] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit the invention.

[0050] In the description of this utility model, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" logical relationship.

[0051] In this invention, terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy, or order between these entities or operations.

[0052] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this invention is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a series of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0053] Similar to the understanding in the Examination Guidelines, in this utility model, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments of this utility model, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0054] In the description of the embodiments of this utility model, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the convenience of describing the specific embodiments of this utility model or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0055] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this utility model, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this utility model pertains, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0056] The direct drive mechanism in this invention can be a linear motor, a cylinder, a hydraulic cylinder, or a motor lead screw and slider assembly, etc.; the rotary drive mechanism can be a servo motor, a stepper motor, or a rotary cylinder, etc.

[0057] This embodiment provides a movable and static interchangeable support component and a piece of furniture that is off the ground, which can simultaneously ensure load-bearing reliability and mobility, so as to meet the dual needs of modern homes for practicality and convenience.

[0058] In this embodiment, the off-ground furniture includes a furniture body and a movable and static interchangeable support located on the bottom surface of the furniture body. Optionally, the furniture body can be a sofa, bed, or cabinet, etc., and this utility model does not limit it.

[0059] See Figure 1 The movable and static interchangeable support components include:

[0060] A support cylinder 1 is provided, which encloses and forms a downward-facing receiving cavity 101. The cavity wall of the receiving cavity 101 is provided with guide grooves 102 that are staggered, circulating and continuously closed.

[0061] Telescopic wheel assembly 2, the telescopic wheel assembly 2 includes a roller bracket 201 located in the accommodating cavity 101 and rotatably connected to the support cylinder 1 along with the guide groove 102, and a roller body 202 rotatably mounted on the bottom of the roller bracket 201;

[0062] The telescopic wheel assembly 2 has the following characteristics: when it moves upward relative to the support cylinder 1 after being driven, it rotates synchronously with the guide groove 102 relative to the support cylinder 1 until the roller bracket 201 is housed in the receiving cavity 101; and when it moves downward relative to the support cylinder 1, it rotates synchronously with the guide groove 102 relative to the support cylinder 1 until the roller bracket 201 extends out of the receiving cavity 101.

[0063] The working process of the interchangeable dynamic and static support component provided by this utility model is as follows:

[0064] I. From extended state to retracted state (conversion of dynamic support to static support):

[0065] When it is necessary to change the movable support from a movable "moving" state to a fixed support "static" state, an external force is applied to cause the roller bracket 201 to drive the roller body 202 to move upward relative to the support cylinder 1 within the guide groove 102. Since the guide groove 102 is a closed structure with staggered heights and continuous circulation, the roller bracket 201 is forcibly guided by the curved surface of the guide groove 102 while moving upward, generating a rotational motion around the axis of the support cylinder 1.

[0066] During this process, the roller body 202 is gradually lifted and retracted. Finally, the roller bracket 201 is completely housed in the receiving cavity 101 of the support cylinder 1, the roller body 202 is off the ground, and the weight of the entire furniture body is supported by the support cylinder 1, achieving stable static fixation. This is the retracted state.

[0067] II. From retracted state to extended state (conversion of static support to dynamic support):

[0068] When it is necessary to change the movable support from a fixed "static" state to a movable "dynamic" state, the roller bracket 201 moves downward relative to the support cylinder 1 along the guide groove 102. Similarly, guided by the staggered guide grooves 102, the downward movement is simultaneously converted into rotational movement.

[0069] As the roller bracket 201 rotates downwards, it gradually extends out of the receiving cavity 101. Finally, the roller body 202 descends to contact the ground and lifts the support cylinder 1, causing the lower end face of the support cylinder 1 to leave the ground. The weight of the movable and static interchangeable support is borne by the roller body 202, at which point the furniture body can be easily moved via the roller body 202. This is the extended state.

[0070] The movable and static interchangeable support component and the ground-mounted furniture provided by this utility model combine vertical linear motion and rotational motion through the unique design of the circulating closed guide groove 102, realizing a smooth and reliable transition between the two states of support and movement. Therefore, it can simultaneously take into account the load-bearing reliability and the flexibility of movement, so as to meet the dual needs of modern home furnishings for practicality and convenience.

[0071] See Figure 2 and Figure 3 The following section describes the specific structure of the guide groove 102.

[0072] The guide groove 102 includes a plurality of repeating groove segment units, the groove segment unit including:

[0073] A steeply inclined descending groove segment 1021, the upper end of which is connected to the previous groove segment unit, and the lower end of which extends downward at an inclination.

[0074] The slightly inclined lifting channel 1022 has its lower end connected to the lower end of the significantly inclined lowering channel 1021. The upper end of the slightly inclined lifting channel 1022 extends upward at an angle away from the significantly inclined lowering channel 1021. Furthermore, the height of the upper end of the slightly inclined lifting channel 1022 is lower than the height of the upper end of the significantly inclined lowering channel 1021.

[0075] The small vertical descending groove section 1023 has its upper end connected to the upper end of the small inclined lifting groove section 1022, and its lower end extends vertically downward.

[0076] The slightly inclined descending groove section 1024 has its upper end connected to the upper end of the slightly vertical descending groove section 1023, and its lower end extends downward at an inclination away from the slightly inclined lifting groove section 1022.

[0077] A highly inclined lifting trough section 1025 is provided, the lower end of which is connected to the lower end of a slightly inclined lowering trough section 1024. The upper end of the highly inclined lifting trough section 1025 extends upward at an angle away from the slightly inclined lowering trough section 1024. Furthermore, the height of the upper end of the highly inclined lifting trough section 1025 is higher than the height of the upper end of the highly inclined lowering trough section 1021.

[0078] A large vertical descent groove segment 1026 is provided, the upper end of which is connected to the upper end of the large inclined lifting groove segment 1025, and the lower end of which extends vertically downward and connects to the next groove segment unit.

[0079] Correspondingly, the circumferential surface of the roller bracket 201 is provided with a guide protrusion 2011 that protrudes into the guide groove 102 and slides along the guide groove 102;

[0080] When the guide post 2011 moves to the upper end connection point of the large inclined lifting groove section 1025 and the large vertical descending groove section 1026, the telescopic wheel assembly 2 is in the retracted state.

[0081] When the guide post 2011 moves to the upper end connection point of the small inclined lifting groove section 1022 and the small vertical descending groove section 1023, the telescopic wheel assembly 2 is in the extended state.

[0082] It should be noted that the vertical descending groove is designed to ensure that the guide protrusion 2011 can remain stable in both the retracted and extended states. When the user wants to switch states, the furniture body must be raised. In this embodiment, the support cylinder 1 is fixed to the bottom of the furniture body. The state is switched by initially raising the furniture body and then lowering it to switch to the retracted state, and then raising the furniture body again and lowering it to switch to the extended state.

[0083] The following describes the positional changes of the guide post 2011 during the operation of the interchangeable dynamic and static support component:

[0084] 1. Switching from extended state to retracted state (converting dynamic support to static support)

[0085] S101: Initial position (extended state): At this time, the furniture body is supported by the roller body 202 and is in a movable "moving" state. The guide protrusion 2011 is stably located at the upper connection point of the slightly inclined lifting groove section 1022 and the slightly vertical lowering groove section 1023.

[0086] S102: User lifts the furniture body: The user applies external force to lift the furniture body, and the support cylinder 1 rises accordingly. Due to its own weight, the telescopic wheel assembly 2 moves downwards relative to the rising support cylinder 1. The relative movement path of the guide protrusion 2011 within the guide groove 102 is as follows:

[0087] It enters from the upper end of the small vertical descending groove section 1023 and slides vertically downward along the small vertical descending groove section 1023 to the lower end of the small vertical descending groove section 1023.

[0088] Enter the upper end of the slightly inclined descending groove section 1024, and slide downward along the slightly inclined descending groove section 1024 to the lower end of the slightly inclined descending groove section 1024.

[0089] It should be noted that when the guide post 2011 moves to the lower end of the slightly inclined descending groove section 1024, the user can lower the furniture body. At this time, the guide post 2011 has passed the lowest point of the descending section and is located at the starting end of the significantly inclined lifting groove section 1025.

[0090] S103: User lowers the furniture body: After the user lowers the furniture body, the support cylinder 1 moves downward under the action of gravity. Due to the trajectory design of the guide groove 102, the guide protrusion 2011 will naturally slide into the lower end of the steeply inclined lifting groove 1025, and slide upward along the steeply inclined lifting groove 1025 to the upper end of the steeply inclined lifting groove 1025, and finally enter the upper end of the steeply vertically descending groove 1026. The telescopic wheel assembly 2 is lifted, and the roller bracket 201 and the roller body 202 are stored in the receiving cavity 101. The weight of the furniture body is directly supported by the support cylinder 1, achieving a stable "static" state. The guide protrusion 2011 is stably located at the upper connection point of the steeply inclined lifting groove 1025 and the steeply vertically descending groove 1026.

[0091] 2. Switching from the retracted state to the extended state (converting from static support to dynamic support)

[0092] S201: Initial position (retracted state): At this time, the furniture body is supported by the support cylinder 1 and is in a "static" state of fixed support. The guide protrusion 2011 is stably located at the upper connection point of the large inclined lifting groove 1025 and the large vertical lowering groove 1026 of the previous groove unit.

[0093] S202: User lifts the furniture body: The user applies external force to lift the furniture body, and the support cylinder 1 rises accordingly. Due to its own weight, the telescopic wheel assembly 2 moves downwards relative to the rising support cylinder 1. The relative movement path of the guide protrusion 2011 within the guide groove 102 is as follows:

[0094] It enters from the upper end of the large vertical descending groove 1026 of the previous groove segment unit, and slides vertically downward along the large vertical descending groove 1026 of the previous groove segment unit to the lower end of the large vertical descending groove 1026 of the previous groove segment unit.

[0095] After entering the upper end of the steeply inclined descending groove 1021 of the next groove segment unit, it slides downward along the steeply inclined descending groove 1021 to the lower end of the steeply inclined descending groove 1021.

[0096] It should be noted that when the guide post 2011 moves to the lower end of the steeply inclined descending groove section 1021, the user can lower the furniture body. At this time, the guide post 2011 has passed the lowest point of the descending section and is located at the starting end of the slightly inclined lifting groove section 1022.

[0097] S203: User lowers the furniture body: After the user lowers the furniture body, the support cylinder 1 moves downward under the action of gravity. Due to the trajectory design of the guide groove 102, the guide protrusion 2011 will naturally slide into the lower end of the slightly inclined lifting groove 1022, and slide upward along the slightly inclined lifting groove 1022 to the upper end of the slightly inclined lifting groove 1022, and finally enter the upper end of the slightly vertical descending groove 1023. During the descent, the telescopic wheel assembly 2 extends the roller bracket 201, the roller body 202 contacts the ground and lifts the support cylinder 1, so that the lower end of the support cylinder 1 is off the ground. The weight of the furniture body is then borne by the roller body 202, restoring the movable "moving" state. The guide protrusion 2011 is stably located at the upper connection point between the slightly inclined lifting groove 1022 and the slightly vertical descending groove 1023.

[0098] The mechanism design of the guide groove 102 allows the user to simply lift the furniture up to a point where the guide protrusion 2011 passes the lowest point of the inclined descent section in the current direction of movement, and then automatically complete the subsequent state transition process with the help of gravity, making the operation very labor-saving and convenient.

[0099] See Figure 4 In this embodiment, the movable and static interchangeable support member further includes:

[0100] Follow-up limiting member 3, which is fixed to the top of the roller bracket 201;

[0101] Fixed limiting plate 4, the fixed limiting plate 4 is fixed in the accommodating cavity 101, and is provided with a limiting groove 401 for the follower limiting member 3 to pass through;

[0102] in,

[0103] When the telescopic wheel assembly 2 is in the retracted state, the follower limiting member 3 is located above the fixed limiting plate 4 and is misaligned with the limiting groove 401 to restrict the telescopic wheel assembly 2 from moving downward relative to the support cylinder 1.

[0104] When the telescopic wheel assembly 2 is in the extended state, the follower limiting member 3 aligns with the limiting groove 401 and moves downward through the limiting groove 401.

[0105] By setting the follower limiting member 3 and the fixed limiting plate 4, and utilizing the misalignment and alignment relationship between the follower limiting member 3 and the limiting groove 401, the downward movement of the telescopic wheel assembly 2 can be restricted when it is in the retracted state, thus avoiding wear and abnormal noise caused by the roller body 202 contacting the ground during static support; when the telescopic wheel assembly 2 is in the extended state, the roller body 202 is allowed to move downward, ensuring the realization of the dynamic support function. The structure is simple and the limiting is reliable.

[0106] Optionally, the limiting groove 401 is a straight groove, and the follower limiting member 3 includes a horizontal bar portion 301 with a size smaller than the limiting groove 401, and a vertical bar portion 302 connecting the horizontal bar portion 301 to the support cylinder 1. Accordingly, the number of groove segment units is four; the number of guide protrusions 2011 is four, and the four guide protrusions 2011 are evenly spaced around the circumferential surface of the roller bracket 201.

[0107] The number of the slot segment units is set to four. This number is designed to match the structure of the slot, so that the roller bracket 201 can complete a state switch every 90 degrees of rotation. The movement trajectory is smooth and the operation logic is clear and intuitive.

[0108] Four guide protrusions 2011 are evenly spaced around the circumferential surface of the roller bracket 201, so that the support cylinder 1 and the telescopic wheel assembly 2 are subjected to uniform force when they rotate relative to each other, effectively maintaining a high degree of coaxiality, ensuring smooth movement, and reducing wear.

[0109] In this embodiment, the top surface of the support cylinder 1 is provided with a concave mounting screw hole 103 or a convex mounting bolt, so that the movable and static interchangeable support can be installed to the bottom of the furniture body by means of threaded connection.

[0110] In this embodiment, the bottom surface of the support cylinder 1 is provided with an annular anti-slip pad 104. By providing the annular anti-slip pad 104 on the bottom surface of the support cylinder 1, when the telescopic wheel assembly 2 is in the retracted state and the support cylinder 1 directly supports the furniture body, the friction with the ground can be effectively increased, preventing the furniture from sliding and further enhancing the stability and safety of the static support state.

[0111] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A dynamic-static exchange support member, characterized by, The utility model relates to a support cylinder (1) is enclosed and forms the accommodation cavity (101) of open downward, the cavity wall of accommodation cavity (101) is equipped with the high and low staggered cycle and continuous closed guide groove (102), the telescopic wheel group (2) including the gyro wheel support (201) in accommodation cavity (101) and with guide groove (102) and support cylinder (1) rotation connection, and the gyro wheel body (202) rotation installation in the bottom of gyro wheel support (201), wherein, the telescopic wheel group (2) has the contraction state when being driven to the upward movement relative to support cylinder (1), synchronously with guide groove (102) relative to support cylinder (1) rotation, until gyro wheel support (201) is received in accommodation cavity (101), and has the extension state when being driven to the downward movement relative to support cylinder (1), synchronously with guide groove (102) relative to support The guide groove (102) includes a plurality of repeated groove segment units, the groove segment unit includes: a large slope descending groove segment (1021), the upper end of the large slope descending groove segment (1021) is communicated with the previous groove segment unit, and the lower end of the large slope descending groove segment (1021) extends obliquely downward; a small slope lifting groove segment (1022), the lower end of the small slope lifting groove segment (1022) is communicated with the lower end of the large slope descending groove segment (1021), the upper end of the small slope lifting groove segment (1022) extends obliquely upward away from the large slope descending groove segment (1021), and the upper end height of the small slope lifting groove segment (1022) is lower than the upper end height of the large slope descending groove segment (1021); 2. The dynamic-static convertible support of claim 1, wherein, a small vertical descending groove segment (1023), the upper end of the small vertical descending groove segment (1023) is communicated with the upper end of the small slope lifting groove segment (1022), and the lower end of the small vertical descending groove segment (1023) extends vertically downward; a small slope descending groove segment (1024), the upper end of the small slope descending groove segment (1024) is communicated with the upper end of the small vertical descending groove segment (1023), and the lower end of the small slope descending groove segment (1024) extends obliquely downward away from the small slope lifting groove segment (1022); a large slope lifting groove segment (1025), the lower end of the large slope lifting groove segment (1025) is communicated with the lower end of the small slope descending groove segment (1024), the upper end of the large slope lifting groove segment (1025) extends obliquely upward away from the small slope descending groove segment (1024), and the upper end height of the large slope lifting groove segment (1025) is higher than the upper end height of the large slope descending groove segment (1021); ​ ​ ​ A large vertical descending groove section (1026) whose upper end is communicated with the upper end of the large oblique ascending groove section (1025), and whose lower end extends vertically downward and is communicated to the next groove section unit.

3. The dynamic-static convertible support of claim 2, wherein, The circumferential surface of the roller support (201) is provided with a guide protruding column (2011) which is inserted into and slides along the guide groove (102); When the guide protruding column (2011) moves to the position where the upper ends of the large oblique ascending groove section (1025) and the large vertical descending groove section (1026) are communicated, the retractable wheel set (2) is in the retracted state; When the guide protruding column (2011) moves to the position where the upper ends of the small oblique ascending groove section (1022) and the small vertical descending groove section (1023) are communicated, the retractable wheel set (2) is in the extended state.

4. The dynamic-static convertible support of claim 3, wherein, Further comprising: A follow-up limiting piece (3) which is fixed to the top of the roller support (201); A fixed limiting plate (4) which is fixed in the accommodating cavity (101) and is provided with a limiting groove (401) through which the follow-up limiting piece (3) passes; When the retractable wheel set (2) is in the retracted state, the follow-up limiting piece (3) is located above the fixed limiting plate (4) and is arranged in a staggered manner with the limiting groove (401) to limit the downward movement of the retractable wheel set (2) relative to the support cylinder (1); When the retractable wheel set (2) is in the extended state, the follow-up limiting piece (3) is aligned with the limiting groove (401) and moves downward through the limiting groove (401). The limiting groove (401) is a slot, and the follow-up limiting piece (3) includes a crossbar part (301) which is smaller in size than the limiting groove (401), and a vertical rod part (302) which connects the crossbar part (301) to the support cylinder (1).

5. The dynamic-static convertible support of claim 4, wherein, The number of groove section units is four.

6. The dynamic-static convertible support of claim 5, wherein, The number of guide protruding columns (2011) is four, and the four guide protruding columns (2011) are evenly spaced around the circumferential surface of the roller support (201).

7. The dynamic-static convertible support of claim 6, wherein, The top surface of the support cylinder (1) is provided with a recessed mounting screw hole (103) or a protruding mounting bolt.

8. The convertible support of claim 1, wherein, The bottom surface of the support cylinder (1) is provided with an annular anti-skid pad (104).

9. The convertible support of claim 1, wherein, The furniture body and the movable and static replaceable support as claimed in any one of claims 1-9.

10. A furniture item off the ground, characterized in that, ​

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