Stretching device and seat
By using a control module to drive the back and leg extension mechanisms, the problem of limited seat posture adjustment in existing systems is solved, enabling independent adjustment of back and leg postures and enhancing the versatility of seat postures.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 江苏慕明智能科技有限公司
- Filing Date
- 2025-07-07
- Publication Date
- 2026-06-19
AI Technical Summary
The existing iron frame structure of the seat limits the seat posture adjustment to a single method, making it impossible to independently adjust the posture of the back and legs.
The first and second extension mechanisms are driven by a control module to adjust the posture of the back and legs respectively. The first and second drive mechanisms independently control the expansion or contraction of the first and second extension mechanisms.
It enables independent adjustment of back and leg posture, increases the versatility of seat posture, and avoids mutual interference between posture adjustments.
Smart Images
Figure CN224369407U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of furniture technology, specifically relating to chair accessories, and more particularly to an extension device and a seat. Background Technology
[0002] Electric seats require posture adjustment during use. Due to limitations in the structure and the coordination of telescopic components, the existing seat frame technology results in very limited posture adjustment, only allowing switching to specific postures such as sitting or lying down.
[0003] Therefore, there is an urgent need to develop a new extension device and seat to solve the technical problem that the existing seat frame can only be adjusted to a specific posture.
[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content
[0005] This disclosure provides at least one extension device and a seat.
[0006] In a first aspect, embodiments of this disclosure provide an extension device, comprising: a control module, a support frame, a first extension mechanism, a second extension mechanism, a first drive mechanism, and a second drive mechanism; the first extension mechanism and the second extension mechanism are respectively located in the back support direction and the leg support direction of the support frame, and the first extension mechanism, the second extension mechanism, the first drive mechanism, and the second drive mechanism are movably connected to the support frame, the first drive mechanism is movably connected to the first extension mechanism, and the second drive mechanism is movably connected to the second extension mechanism; the first drive mechanism and the second drive mechanism are electrically connected to the control module; the control module is configured to control the first drive mechanism to push the first extension mechanism to move relative to the support frame, so that the first extension mechanism unfolds or retracts in the back support direction of the support frame; and the control module is further configured to control the second drive mechanism to push the second extension mechanism to move relative to the support frame, so that the second extension mechanism unfolds or retracts in the leg support direction of the support frame.
[0007] In one optional embodiment, the first extension mechanism includes: a first connector and two first extension members; the two first extension members are respectively located on both sides of the back support direction, the two first extension members are respectively hinged to the support frame, and the first connector is respectively connected to the two first extension members; the first drive mechanism is connected to the first connector; the control module is configured to control the first drive mechanism to push the first connector to move, so as to drive the two first extension members to swing relative to the support frame, that is, the two first extension members expand or retract in the back support direction of the support frame.
[0008] In one optional embodiment, the first driving mechanism includes: a first telescopic member; the first telescopic member is hinged to a support frame and a first connecting member respectively, and the first telescopic member is electrically connected to a control module; the control module is configured to control the first telescopic member to push the first connecting member to move.
[0009] In one optional embodiment, the second extension mechanism includes: a second connector and two linkage assemblies; the two linkage assemblies are respectively located on both sides in the leg support direction, the two linkage assemblies are hinged to the support frame, and the second connector is connected to the two linkage assemblies respectively; the second drive mechanism is connected to the second connector; the control module is configured to control the second drive mechanism to push the second connector to move, so as to drive the two linkage assemblies to extend or retract in the leg support direction of the support frame.
[0010] In one optional embodiment, the second drive mechanism includes: a second telescopic member; the second telescopic member is hinged to a support frame and a second connecting member respectively, and the second telescopic member is electrically connected to a control module; the control module is configured to control the second telescopic member to push the second connecting member to move.
[0011] In one optional embodiment, the linkage assembly includes: a first hinge, a second hinge, a third hinge, a fourth hinge, and a second extension member; the second connecting member is connected to the first hinge, the first hinge is hinged to the support frame and the second hinge, the second hinge is hinged to the second extension member, the third hinge is hinged to the support frame and the fourth hinge, the fourth hinge is hinged to the second extension member, and the fourth hinge is hinged to the first hinge; the second telescopic member in the second drive mechanism is connected to the second connecting member; the control module is configured to control the second telescopic member to push the second connecting member to move, thereby causing the first hinge, the second hinge, the third hinge, and the fourth hinge to rotate crosswise, that is, the two second extension members expand or retract in the leg support direction of the support frame.
[0012] In one alternative embodiment, the extension device further includes a base; the support frame is hinged to the base to allow the support frame to swing relative to the base.
[0013] In one alternative embodiment, the support frame includes: a first support and a second support; one first extension member in the first extension mechanism is hinged to the first support, and the other first extension member in the first extension mechanism is hinged to the second support; one link assembly in the second extension mechanism is hinged to the first support, and the other link assembly in the second extension mechanism is hinged to the second support.
[0014] In one optional embodiment, the support frame further includes a support member; the first telescopic member in the first driving mechanism and the second telescopic member in the second driving mechanism are respectively hinged to the support member.
[0015] Secondly, embodiments of this disclosure also provide an extension device, comprising: a control module, a support frame, a first extension mechanism, a second extension mechanism, a first drive mechanism, a second drive mechanism, and a base; wherein the first extension mechanism and the second extension mechanism are respectively located in the back support direction and the leg support direction of the support frame, and the first extension mechanism, the second extension mechanism, the first drive mechanism, and the second drive mechanism are movably connected to the support frame, the first drive mechanism is movably connected to the first extension mechanism, and the second drive mechanism is movably connected to the second extension mechanism; the first drive mechanism and the second drive mechanism are electrically connected to the control module; the control module is configured to control the first drive mechanism to push the first extension mechanism to move relative to the support frame, so that the first extension mechanism unfolds or retracts in the back support direction of the support frame; and the control module is further configured to control the second drive mechanism to push the second extension mechanism to move relative to the support frame, so that the second extension mechanism unfolds or retracts in the leg support direction of the support frame; the support frame is hinged to the base, so that the support frame swings relative to the base.
[0016] Thirdly, embodiments of this disclosure also provide a seat, which includes: a seat body and an extension device as described above; the extension device is mounted on the seat body.
[0017] The beneficial effect of this utility model is that, by driving the first extension mechanism and the second extension mechanism separately, the first extension mechanism and the second extension mechanism can be independently adjusted to achieve back posture and leg posture, and the first extension mechanism and the second extension mechanism can be adjusted independently without interfering with each other, thereby improving the diversity of seat posture adjustment.
[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.
[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description
[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0021] Figure 1 A structural diagram of an extension device provided in an embodiment of this disclosure;
[0022] Figure 2 A structural diagram of a linkage assembly provided in an embodiment of this disclosure;
[0023] Figure 3 This is a structural diagram of a first extension mechanism and a second extension mechanism in a retracted state, provided in an embodiment of the present disclosure.
[0024] Figure 4 This is a structural diagram of a first extension mechanism and a second extension mechanism in an extended state, as provided in an embodiment of the present disclosure.
[0025] Figure 5 This is a schematic block diagram of an extension device provided in an embodiment of the present disclosure.
[0026] In the picture:
[0027] 1. Support frame; 11. First bracket; 12. Second bracket; 13. Support component;
[0028] 2. First extension mechanism; 21. First extension member; 22. First connecting member;
[0029] 3. Second extension mechanism; 31. Linkage assembly; 311. First hinge; 312. Second hinge; 313. Third hinge; 314. Fourth hinge; 315. Second extension member; 32. Second connecting member;
[0030] 4. First drive mechanism; 41. First telescopic component;
[0031] 5. Second drive mechanism; 51. Second telescopic component;
[0032] 6. Base;
[0033] F1, back support direction; F2, leg support direction. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0035] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.
[0036] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.
[0037] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.
[0038] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.
[0039] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.
[0040] Research has found that electric seats require posture adjustment during use, and existing seat frames can only switch to specific postures, such as sitting or lying down, meaning that leg and back postures cannot be adjusted independently.
[0041] Based on the above research, this disclosure provides an extension device and a seat, in which the back posture and leg posture can be adjusted independently without interfering with each other.
[0042] The shortcomings of the above solutions are the result of the utility model inventor's practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as contributions made by the utility model inventor to this disclosure.
[0043] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0044] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0045] like Figures 1 to 5As shown, at least one embodiment provides an extension device, comprising: a control module, a support frame 1, a first extension mechanism 2, a second extension mechanism 3, a first drive mechanism 4, and a second drive mechanism 5; the first extension mechanism 2 and the second extension mechanism 3 are respectively located in the back support direction F1 and the leg support direction F2 of the support frame 1, and the first extension mechanism 2, the second extension mechanism 3, the first drive mechanism 4, and the second drive mechanism 5 are movably connected to the support frame 1, the first drive mechanism 4 is movably connected to the first extension mechanism 2, and the second drive mechanism 5 is movably connected to the second extension mechanism 3; the first drive mechanism 4 and the second drive mechanism 5 are electrically connected to the control module; the control module is configured to control the first drive mechanism 4 to push the first extension mechanism 2 relative to the support frame 1, so that the first extension mechanism 2 expands or retracts in the back support direction F1 of the support frame 1; and the control module is further configured to control the second drive mechanism 5 to push the second extension mechanism 3 relative to the support frame 1, so that the second extension mechanism 3 expands or retracts in the leg support direction F2 of the support frame 1.
[0046] Specifically, the control module can use, but is not limited to, an STM32 series microcontroller to implement signal control of the first drive mechanism 4 and the second drive mechanism 5.
[0047] In at least one embodiment, the first extension mechanism 2 and the second extension mechanism 3 are driven independently by the first drive mechanism 4 and the second drive mechanism 5, respectively, so as to achieve independent adjustment of back posture and leg posture, and to ensure that the first extension mechanism 2 and the second extension mechanism 3 do not interfere with each other when they are adjusted, thereby improving the diversity of seat posture.
[0048] In at least one embodiment, please refer to Figure 1 The first extension mechanism 2 includes: a first connector 22 and two first extension members 21; the two first extension members 21 are respectively located on both sides of the back support direction F1, the two first extension members 21 are respectively hinged to the support frame 1, and the first connector 22 is respectively connected to the two first extension members 21; the first drive mechanism 4 is connected to the first connector 22; the control module is configured to control the first drive mechanism 4 to push the first connector 22 to move, so as to drive the two first extension members 21 to swing relative to the support frame 1, that is, the two first extension members 21 unfold or retract in the back support direction F1 of the support frame 1.
[0049] Specifically, the first extension member 21 is a sheet-like member, and the first connector 22 is a tubular member.
[0050] Specifically, the first drive mechanism 4 is hinged to the support frame 1 and the first connecting member 22. The first extension member 21 is hinged to the support frame 1, and the first connecting member 22 is fixed to the first extension member 21. When the first drive mechanism 4 pushes the first connecting member 22 to move, the first extension member 21 swings relative to the support frame 1, and the back support member 13 can be placed on the two first extension members 21 to achieve back posture adjustment.
[0051] In at least one embodiment, please refer to Figure 1 The first driving mechanism 4 includes: a first telescopic member 41; the first telescopic member 41 is hinged to the support frame 1 and the first connecting member 22 respectively, and the first telescopic member 41 is electrically connected to the control module; the control module is configured to control the first telescopic member 41 to push the first connecting member 22 to move.
[0052] Specifically, the first telescopic component 41 may be, but is not limited to, an electric push rod or a cylinder.
[0053] Specifically, the mounting part of the first telescopic member 41 is hinged to the support frame 1, and the movable part of the first telescopic member 41 is hinged to the first connecting member 22. Thus, when the first telescopic member 41 extends or retracts, it pushes the first connecting member 22 to drive the two first extension members 21 to swing, so as to realize the back posture unfolding and retracting.
[0054] Specifically, please refer to Figure 3 At this time, the first extension member 21 is in the retracted state; please refer to Figure 4 At this time, the first extension member 21 is in the unfolded state.
[0055] In at least one embodiment, the second extension mechanism 3 includes: a second connector 32 and two linkage assemblies 31; the two linkage assemblies 31 are respectively located on both sides of the leg support direction F2, the two linkage assemblies 31 are hinged to the support frame 1, and the second connector 32 is connected to the two linkage assemblies 31 respectively; the second drive mechanism 5 is connected to the second connector 32; the control module is configured to control the second drive mechanism 5 to push the second connector 32 to move, so as to drive the two linkage assemblies 31 to unfold or retract in the leg support direction F2 of the support frame 1.
[0056] Specifically, the linkage assembly 31 is a cross linkage structure, and the second connector 32 is a tubular component.
[0057] Specifically, the second drive mechanism 5 is hinged to the support frame 1 and the second connecting member 32, the connecting rod assembly 31 is hinged to the support frame 1, and the second connecting member 32 is fixed to the connecting rod assembly 31. When the second drive mechanism 5 pushes the second connecting member 32 to move, the connecting rod assembly 31 moves relative to the support frame 1, and the leg support member 13 can be placed on the two connecting rod assemblies 31 to realize the adjustment of leg posture.
[0058] In at least one embodiment, please refer to Figure 1 The second drive mechanism 5 includes: a second telescopic member 51; the second telescopic member 51 is hinged to the support frame 1 and the second connecting member 32 respectively, and the second telescopic member 51 is electrically connected to the control module; the control module is configured to control the second telescopic member 51 to push the second connecting member 32 to move.
[0059] Specifically, the second telescopic component 51 may be, but is not limited to, an electric push rod or a cylinder.
[0060] Specifically, the mounting part of the second telescopic member 51 is hinged to the support frame 1, and the movable part of the second telescopic member 51 is hinged to the second connecting member 32. Thus, when the second telescopic member 51 extends or retracts, it pushes the second connecting member 32 to drive the two linkage assemblies 31 to move, so as to realize the extension and retraction of the leg posture.
[0061] In at least one embodiment, please refer to Figure 2 The connecting rod assembly 31 includes: a first hinge 311, a second hinge 312, a third hinge 313, a fourth hinge 314, and a second extension member 315; the second connecting member 32 is connected to the first hinge 311, the first hinge 311 is hinged to the support frame 1 and the second hinge 312 respectively, the second hinge 312 is hinged to the second extension member 315, the third hinge 313 is hinged to the support frame 1 and the fourth hinge 314, and the fourth hinge 314 is hinged to the second extension member 315. Two extension members 315 are hinged together, and the fourth hinge member 314 is hinged together with the first hinge member 311; the second telescopic member 51 in the second drive mechanism 5 is connected to the second connecting member 32; the control module is configured to control the second telescopic member 51 to push the second connecting member 32 to move, so as to drive the first hinge member 311, the second hinge member 312, the third hinge member 313, and the fourth hinge member 314 to rotate crosswise, that is, the two second extension members 315 are extended or retracted in the leg support direction F2 of the support frame 1.
[0062] Specifically, the first hinge 311 and the second hinge 312 are V-shaped hinges, as are the third hinge 313 and the fourth hinge 314, and their opening directions are consistent. The first hinge 311 is also hinged to the fourth hinge 314. At the same time, the first hinge 311 and the third hinge 313 are respectively hinged to the support frame 1, and the second hinge 312 and the fourth hinge 314 are respectively hinged to the second extension member 315. Therefore, when the second drive mechanism 5 pushes the first hinge 311, the first hinge 311 and the second hinge 312, and the third hinge 313 and the fourth hinge 314 expand or retract synchronously, thereby driving the second extension member 315 to expand or retract, thus realizing the expansion and retraction of the leg posture.
[0063] Specifically, please refer to Figure 3 At this time, the second extension member 315 is in the retracted state; please refer to Figure 4 At this time, the second extension member 315 is in the unfolded state.
[0064] In at least one embodiment, please refer to Figure 1 The extension device further includes: a base 6; the support frame 1 is hinged to the base 6 so that the support frame 1 swings relative to the base 6.
[0065] In at least one embodiment, please refer to Figure 1 The support frame 1 includes: a first support 11 and a second support 12; in the first extension mechanism 2, one first extension member 21 is hinged to the first support 11, and the other first extension member 21 in the first extension mechanism 2 is hinged to the second support 12; in the second extension mechanism 3, one connecting rod assembly 31 is hinged to the first support 11, and the other connecting rod assembly 31 in the second extension mechanism 3 is hinged to the second support 12.
[0066] In at least one embodiment, please refer to Figure 1 The support frame 1 further includes a support member 13; the first telescopic member 41 in the first drive mechanism 4 and the second telescopic member 51 in the second drive mechanism 5 are respectively hinged to the support member 13.
[0067] Specifically, the support member 13 is used to install the first telescopic member 41 and the second telescopic member 51.
[0068] Based on the same technical concept, at least one embodiment also provides a stretching device, which includes: a control module, a support frame 1, a first stretching mechanism 2, a second stretching mechanism 3, a first drive mechanism 4, a second drive mechanism 5, and a base 6; the first stretching mechanism 2 and the second stretching mechanism 3 are respectively located in the back support direction F1 and the leg support direction F2 of the support frame 1, and the first stretching mechanism 2, the second stretching mechanism 3, the first drive mechanism 4, and the second drive mechanism 5 are respectively movably connected to the support frame 1, the first drive mechanism 4 is movably connected to the first stretching mechanism 2, and the second drive mechanism 5 is connected to the second stretching mechanism 6. The support frame 1 is movably connected to the support frame 1; the first drive mechanism 4 and the second drive mechanism 5 are electrically connected to the control module; the control module is configured to control the first drive mechanism 4 to push the first extension mechanism 2 to move relative to the support frame 1, so that the first extension mechanism 2 expands or retracts in the back support direction F1 of the support frame 1; and the control module is also configured to control the second drive mechanism 5 to push the second extension mechanism 3 to move relative to the support frame 1, so that the second extension mechanism 3 expands or retracts in the leg support direction F2 of the support frame 1; the support frame 1 is hinged to the base 6 so that the support frame 1 swings relative to the base 6.
[0069] Specifically, the swing of the base 6 itself does not affect the movement of the first extension mechanism 2 and the second extension mechanism 3. The first extension mechanism 2 and the second extension mechanism 3 can also work independently, thus enabling independent adjustment of the back posture and leg posture to improve the diversity of seat posture.
[0070] Based on the same technical concept, at least one embodiment also provides a seat, which includes: a seat body and an extension device as described above; the extension device is mounted on the seat body.
[0071] In summary, this utility model enables independent adjustment of back and leg postures by having the first and second drive mechanisms drive the first and second extension mechanisms separately, respectively. This ensures that the first and second extension mechanisms do not interfere with each other during their respective adjustments, thereby improving the versatility of seat postures.
[0072] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0073] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.
[0074] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.
[0075] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.
[0076] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A stretching device, characterized in that, include: The control module, support frame (1), first extension mechanism (2), second extension mechanism (3), first drive mechanism (4), and second drive mechanism (5); wherein The first extension mechanism (2) and the second extension mechanism (3) are located in the back support direction (F1) and the leg support direction (F2) of the support frame (1), respectively. The first extension mechanism (2), the second extension mechanism (3), the first drive mechanism (4), and the second drive mechanism (5) are movably connected to the support frame (1). The first drive mechanism (4) is movably connected to the first extension mechanism (2), and the second drive mechanism (5) is movably connected to the second extension mechanism (3). The first drive mechanism (4) and the second drive mechanism (5) are electrically connected to the control module respectively; The control module is configured to control the first drive mechanism (4) to push the first extension mechanism (2) relative to the support frame (1) to move, so that the first extension mechanism (2) expands or retracts in the back support direction (F1) of the support frame (1); and The control module is also configured to control the second drive mechanism (5) to push the second extension mechanism (3) relative to the support frame (1) to move, so that the second extension mechanism (3) unfolds or retracts in the leg support direction (F2) of the support frame (1).
2. The extension device as claimed in claim 1, characterized in that, The first extension mechanism (2) includes: a first connector (22) and two first extension members (21); The two first extension members (21) are located on both sides of the back support direction (F1), the two first extension members (21) are hinged to the support frame (1), and the first connecting member (22) is connected to the two first extension members (21). The first drive mechanism (4) is connected to the first connector (22); The control module is configured to control the first drive mechanism (4) to push the first connector (22) to move, so as to drive the two first extension members (21) to swing relative to the support frame (1), that is, the two first extension members (21) unfold or retract in the back support direction (F1) of the support frame (1).
3. The extension device as described in claim 2, characterized in that, The first drive mechanism (4) includes: a first telescopic member (41); The first telescopic member (41) is hinged to the support frame (1) and the first connecting member (22) respectively, and the first telescopic member (41) is electrically connected to the control module; The control module is configured to control the first telescopic member (41) to push the first connecting member (22) to move.
4. The extension device as claimed in claim 1, characterized in that, The second extension mechanism (3) includes: a second connector (32) and a two-bar assembly (31); The two connecting rod assemblies (31) are located on both sides of the leg support direction (F2), the two connecting rod assemblies (31) are hinged to the support frame (1), and the second connecting member (32) is connected to the two connecting rod assemblies (31) respectively; The second drive mechanism (5) is connected to the second connector (32); The control module is configured to control the second drive mechanism (5) to push the second connector (32) to move, so as to drive the two linkage assemblies (31) to unfold or retract in the leg support direction (F2) of the support frame (1).
5. The extension device as claimed in claim 4, characterized in that, The second drive mechanism (5) includes: a second telescopic member (51); The second telescopic member (51) is hinged to the support frame (1) and the second connecting member (32) respectively, and the second telescopic member (51) is electrically connected to the control module; The control module is configured to control the second telescopic member (51) to push the second connecting member (32) to move.
6. The extension device as claimed in claim 4, characterized in that, The linkage assembly (31) includes: a first hinge (311), a second hinge (312), a third hinge (313), a fourth hinge (314), and a second extension member (315). The second connector (32) is connected to the first hinge (311), the first hinge (311) is hinged to the support frame (1) and the second hinge (312) respectively, the second hinge (312) is hinged to the second extension (315), the third hinge (313) is hinged to the support frame (1) and the fourth hinge (314), the fourth hinge (314) is hinged to the second extension (315), and the fourth hinge (314) is hinged to the first hinge (311); In the second drive mechanism (5), the second telescopic member (51) is connected to the second connecting member (32); The control module is configured to control the second telescopic member (51) to push the second connecting member (32) to move, so as to drive the first hinge member (311), the second hinge member (312), the third hinge member (313), and the fourth hinge member (314) to rotate crosswise, that is, the two second extension members (315) unfold or retract in the leg support direction (F2) of the support frame (1).
7. The extension device as claimed in claim 1, characterized in that, Also includes: Base (6); The support frame (1) is hinged to the base (6) so that the support frame (1) swings relative to the base (6).
8. The extension device as claimed in claim 1, characterized in that, The support frame (1) includes: a first bracket (11), a second bracket (12), and a support member (13); In the first extension mechanism (2), one first extension member (21) is hinged to the first support (11), and the other first extension member (21) in the first extension mechanism (2) is hinged to the second support (12); In the second extension mechanism (3), one link assembly (31) is hinged to the first support (11), and the other link assembly (31) in the second extension mechanism (3) is hinged to the second support (12); The support frame (1) further includes: a support member (13); The first telescopic member (41) in the first drive mechanism (4) and the second telescopic member (51) in the second drive mechanism (5) are respectively hinged to the support member (13).
9. A stretching device, characterized in that, include: The control module, support frame (1), first extension mechanism (2), second extension mechanism (3), first drive mechanism (4), second drive mechanism (5), and base (6); wherein The first extension mechanism (2) and the second extension mechanism (3) are located in the back support direction (F1) and the leg support direction (F2) of the support frame (1), respectively. The first extension mechanism (2), the second extension mechanism (3), the first drive mechanism (4), and the second drive mechanism (5) are movably connected to the support frame (1). The first drive mechanism (4) is movably connected to the first extension mechanism (2), and the second drive mechanism (5) is movably connected to the second extension mechanism (3). The first drive mechanism (4) and the second drive mechanism (5) are electrically connected to the control module respectively; The control module is configured to control the first drive mechanism (4) to push the first extension mechanism (2) relative to the support frame (1) to move, so that the first extension mechanism (2) expands or retracts in the back support direction (F1) of the support frame (1); and The control module is also configured to control the second drive mechanism (5) to push the second extension mechanism (3) to move relative to the support frame (1) so that the second extension mechanism (3) expands or retracts in the leg support direction (F2) of the support frame (1); The support frame (1) is hinged to the base (6) so that the support frame (1) swings relative to the base (6).
10. A type of seat, characterized in that, include: The seat body and the extension device as described in any one of claims 1-9; in The extension device is mounted on the seat body.