Swing locking assembly for mechanical stretching device
By designing a swing locking component in the mechanical extension device, stable switching is achieved by utilizing the positional change of the limiting element in the limiting groove, which solves the problems of insufficient stability and flexibility of the existing device and improves the safety of assisted standing and the comfort of sitting posture.
Patent Information
- Application Number
- CN202423295976.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing mechanical extension devices are not well-designed in terms of swing function, especially in assisted standing sofas for the elderly. They suffer from insufficient stability and flexibility, and lack an effective locking mechanism, which makes it easy for users to sway during the switching process, affecting safety and user experience.
A swing locking assembly is designed, including a base, a swing component, a motion frame, and a motion component. The swing state of the device is controlled by the position change of the limiting component in the limiting groove, so as to achieve stable switching between sitting and assisted standing postures. The swing stops when the limiting component enters the locking end, thereby enhancing stability.
The mechanical extension device improves stability in assisted standing and flexibility in seated posture, enhancing user safety and comfort and meeting the needs of the elderly.
Smart Images
Figure CN223585519U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to furniture field, especially a swing locking assembly for mechanical stretching device. BACKGROUND
[0002] In modern society, with the pursuit of life quality and convenience, and the intensification of population aging trend, the demand for mechanical devices that can assist human posture change and provide support is growing. For example, in the field of rehabilitation medicine, many patients need to gradually convert from a sitting posture to a standing posture with the help of special equipment to conduct rehabilitation training and restore physical functions; in daily life, some old people or people with difficulty in movement also need similar auxiliary standing devices to improve their activity ability and independence.
[0003] The existing mechanical stretching device is not perfect in the design of swing function, especially the auxiliary standing sofa for the elderly. In a sitting position, the user may need a certain degree of swing flexibility to adjust the comfortable sitting posture, but the current device cannot realize swing, limiting the user's activity freedom.
[0004] Furthermore, although the existing mechanical stretching device can realize the switching function between sitting and auxiliary standing state to a certain extent, there are obvious deficiencies in stability and flexibility. During the switching process, there are often problems such as shaking and inaccurate displacement, which not only affects the user's experience, but also may pose a potential threat to the user's safety. Especially when the mechanical stretching device is in the auxiliary standing state, due to the lack of effective locking mechanism, the device is easily disturbed by external force and unnecessary swing, making it difficult for the user to maintain a stable standing posture and increasing the risk of falling.
[0005] In summary, in order to meet the higher requirements of the market for the stability, flexibility and other aspects of the mechanical stretching device, it is urgent to design a swing locking assembly that can effectively solve the problems existing in the prior art. SUMMARY
[0006] In order to solve the above technical problems, the utility model provides a swing locking assembly for mechanical stretching device, contain base, swing piece, movement frame and moving piece, base is main body support effect, swing piece is connected with base, movement frame rotates, gives mechanical stretching device swing ability, moving piece is used for driving device state switching, moving piece and swing piece are equipped with limit piece and limit groove respectively, limit groove contains movement space and locking end, the position change of limit piece in it can control the swing state of device, when limit piece is in movement space, device can swing, enters locking end, device is stationary, this assembly passes through ingenious structure design, effective solution current mechanical stretching device is not enough in the stability and flexibility problem when sitting posture and auxiliary standing state switching, not only has improved the stability of auxiliary standing function, has optimized the swing flexibility under sitting posture state, has wide application prospect.
[0007] The technical scheme of the utility model is as follows:
[0008] A swing locking assembly for mechanical stretching device, including base, swing piece, movement frame and the moving piece of setting on movement frame, base is configured as main body support, swing piece is rotatably connected on base, swing piece is also rotatably connected with movement frame, and makes movement frame swing setting on base, swing piece is configured as making mechanical stretching device have swing ability, moving piece is configured as driving mechanical stretching device to carry out state switching, one of moving piece and swing piece is equipped with limit groove, the other of moving piece and swing piece is equipped with limit piece, limit groove includes movement space and locking end, movement space and locking end are communicated, when limit piece is located in movement space, moving piece and moving piece can swing relative to base, when limit piece enters locking end from movement space, movement frame and moving piece are stationary relative to base, moving piece is rotatably set on movement frame, when moving piece drives mechanical stretching device to carry out state switching, limit piece switches between movement space and locking end.
[0009] Moving piece is used for connecting the mechanical stretching unit of mechanical stretching device to drive its movement, makes mechanical stretching device switch in sitting posture state and auxiliary standing state, simultaneously, the relative position of limit piece in limit groove will change, that is, switches between movement space and locking end, so that mechanical stretching device is in sitting posture state, limit piece can keep in movement space, and makes mechanical stretching device can realize swing, and mechanical stretching device is in auxiliary standing state, limit piece can enter locking end from movement space, so that mechanical stretching device stops swing, makes auxiliary standing function more stable.
[0010] The scheme gives the mechanical stretching device swing function, which is more in line with the needs of the elderly, and can give locking when switching to the auxiliary standing state. The locking is more stable even for the old chair without swing function, because the scheme has an additional structural locking of the limiting piece at the locking end in addition to the self-locking of the actuator, achieving two goals at once.
[0011] As a preferred, the limiting slot is opened on the swing piece, the swing piece is a fan-shaped plate piece, the swing piece includes a connecting rod part and a fan-shaped extension part, the extension part is located beside the connecting rod part, the connecting rod part is rotationally connected with the base and the moving frame, and the limiting slot is opened on the extension part. The shape of the swing piece is different from the rod piece in the general mechanical stretching unit, and a specific shape is designed due to the need to set the limiting slot, so that the swing piece changes from the original connecting rod for swinging to a plate body.
[0012] As a preferred, the connecting rod part and the extension part are integrally formed.
[0013] As a preferred, the limiting piece is column-shaped, and the limiting piece is integrally formed on the moving piece.
[0014] As a preferred, the limiting slot is T-shaped, the movement space is arc-shaped and inclined downward from front to back; the locking end is inclined and extended toward the front part in the middle of the movement space; and the locking end and the movement space are configured such that when the limiting piece gradually approaches the locking end from the movement space, the swing stroke of the limiting piece in the movement space gradually decreases. The limiting piece remains stable when entering the locking end, and because the swing stroke of the limiting piece gradually decreases when moving from the movement space to the locking end, the whole gradually enters a stable state until finally locked.
[0015] As a preferred, the base includes an upwardly extending support seat, the upper end of the swing piece is rotationally connected with the upper end of the support seat, the lower end of the swing piece is rotationally connected with the moving frame, and the moving piece is located beside the swing piece. The swing piece is hung on the base through the moving piece, the height of the moving frame is lowered, so that the structure is more compact, and the moving piece can be located beside the swing piece, so that the limiting piece and the limiting slot can play a role.
[0016] As a preferred, the base is further provided with an auxiliary piece, the auxiliary piece is rotationally connected with the base and the moving frame, the auxiliary piece is arranged in front of and behind the swing piece, and the auxiliary piece is configured to assist the swing piece to swing the moving frame on the base. The moving frame can stably swing on the base.
[0017] As a preferred, the swing piece is located in front of the auxiliary piece, and the distance between the connection points of the auxiliary piece and the swing piece on the base is greater than the distance between the two on the moving frame. In this way, when swinging backward, the whole body leans backward, and when swinging forward, the whole body leans forward, which is more close to the sitting feeling of a rocking chair.
[0018] The utility model discloses a design starting point, idea and beneficial effect of the above technical scheme are:
[0019] The moving piece is used for connecting the mechanical stretching unit of the mechanical stretching device to drive its movement, makes the mechanical stretching device switch in the sitting posture state and the auxiliary standing state, simultaneously, the relative position of the limiting piece in the limiting groove will change, namely switches between the movement space and the locking end, makes the limiting piece can keep in the movement space in the sitting posture state of the mechanical stretching device, and makes the mechanical stretching device can realize swing, and the limiting piece can enter the locking end from the movement space in the auxiliary standing state of the mechanical stretching device, to make the mechanical stretching device stop swinging, makes the auxiliary standing function more stable.
[0020] The scheme gives the swing function of the mechanical stretching device, is more in accord with the demand of the old people, and can give the locking when switching to the auxiliary standing state, and the locking is more stable even for the old people chair without swing function, because the scheme additionally increases the structural locking of the limiting piece in the locking end in the auxiliary standing state in addition to the self-locking of the actuator, achieves two things at once. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is the three-dimensional structure schematic view of the mechanical stretching device in the embodiment of the utility model in the sitting posture state;
[0022] Figure 2 It is the sectional view of the mechanical stretching device in the embodiment of the utility model in the sitting posture state and swinging forward;
[0023] Figure 3 It is the sectional view of the mechanical stretching device in the embodiment of the utility model in the sitting posture state and swinging backward;
[0024] Figure 4 It is the three-dimensional structure schematic view of the swing piece and the pedestal in the embodiment of the utility model;
[0025] Figure 5 It is the three-dimensional structure schematic view of the swing locking assembly in the embodiment of the utility model;
[0026] Figure 6 It is the sectional view of the mechanical stretching device in the embodiment of the utility model in the auxiliary standing state;
[0027] Figure 7 It is the three-dimensional structure schematic view of the mechanical stretching device in the embodiment of the utility model in the auxiliary standing state.
[0028] The reference numerals in the attached drawings are as follows: base 1; support 11; swinging member 2; connecting rod 21; extension 22; motion frame 3; moving member 4; limiting groove 5; motion space 51; locking end 52; limiting member 6; lifting rod 7; auxiliary member 8; mechanical extension unit 9; actuator 10. Detailed Implementation
[0029] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0030] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.
[0031] In the description of this utility model, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0032] The specific embodiments of this utility model are as follows:
[0033] like Figure 5 As shown, this utility model provides a swing locking assembly for a mechanical extension device, including a base 1, a swing member 2, a motion frame 3, and a motion member 4 disposed on the motion frame 3. The base 1 is configured as the main support, the swing member 2 is rotatably connected to the base 1, and the swing member 2 is also rotatably connected to the motion frame 3, causing the motion frame 3 to swing on the base 1. The swing member 2 is configured to enable the mechanical extension device to swing, and the motion member 4 is configured to drive the mechanical extension device to switch states. A limiting groove 5 is provided on one of the motion member 4 and the swing member 2. Another limiter 6 is provided on the swing member 2. The limiter groove 5 includes a motion space 51 and a locking end 52. The motion space 51 is connected to the locking end 52. When the limiter 6 is located in the motion space 51, the swing member 4 can swing relative to the base 1. When the limiter 6 moves from the motion space 51 into the locking end 52, the swing frame 3 and the swing member 4 are stationary relative to the base 1. The swing member 4 is rotatably mounted on the swing frame 3. When the swing member 4 drives the mechanical extension device to switch states, the limiter 6 switches between the motion space 51 and the locking end 52.
[0034] The moving piece 4 is used to connect the mechanical stretching unit 9 of the mechanical stretching device to drive the movement thereof, so that the mechanical stretching device is switched between the sitting state and the auxiliary standing state, and the relative position of the limiting piece 6 in the limiting groove 5 changes, that is, the limiting piece 6 is switched between the movement space 51 and the locking end 52, so that the limiting piece 6 can be kept in the movement space 51 in the sitting state of the mechanical stretching device, and the mechanical stretching device can swing, and the limiting piece 6 can enter the locking end 52 from the movement space 51 in the auxiliary standing state of the mechanical stretching device, so that the mechanical stretching device stops swinging, and the auxiliary standing function is more stable.
[0035] The scheme gives the swinging function of the mechanical stretching device, which is more in line with the needs of the elderly, and can be locked when switched to the auxiliary standing state. The locking is more stable even for the old chair without the swinging function, because the scheme additionally increases the structural locking of the limiting piece 6 in the locking end 52 in addition to the self-locking of the actuator 10, which achieves two goals at once.
[0036] As shown in Figures 1-7 The device is applied to a mechanical stretching device having a sitting state and an auxiliary standing state, which comprises a mechanical stretching unit 9, an actuator 10 and the above-mentioned swinging and locking assembly. The mechanical stretching unit 9 is connected to the moving piece 4. After the moving piece 4 is rotationally connected to the mechanical stretching unit 9, the moving piece 4 can lift and rotate the mechanical stretching unit 9 under the action of the actuator 10, so that the mechanical stretching unit 9 is switched from the sitting state to the auxiliary standing state.
[0037] Specifically, the moving frame 3 is further provided with a lifting rod 7 rotationally connected to the moving frame 3 and located above and behind the moving piece 4. The lifting rod 7 lifts the mechanical stretching unit 9 together with the moving piece 4. The base 1 is further provided with an auxiliary piece 8 rotationally connected to the base 1 and the moving frame 3. The auxiliary piece 8 is arranged in front of and behind the swinging piece 2. The auxiliary piece 8 is configured to assist the swinging piece 2 to swing the moving frame 3 on the base 1, so that the moving frame 3 can stably swing on the base 1. Further, the swinging piece 2 is located in front of the auxiliary piece 8, and the distance between the connection points of the auxiliary piece 8 and the swinging piece 2 on the base 1 is greater than the distance between the two on the moving frame 3. In this way, when the moving frame 3 swings backward, the whole body tilts backward, and when it swings forward, the whole body tilts forward, which is more close to the sitting feeling of a rocking chair.
[0038] The base 1 comprises an upwardly extending support seat 11. The upper end of the swinging piece 2 is rotationally connected to the upper end of the support seat 11, and the lower end of the swinging piece 2 is rotationally connected to the moving frame 3. The moving piece 4 is located beside the swinging piece 2. The swinging piece 2 is hung on the support seat 11. The moving frame 3 is hung on the base 1 through the swinging piece 2. The height of the moving frame 3 is reduced, so that the structure is more compact, and the moving piece 4 can be located beside the swinging piece 2, and the limiting piece 6 and the limiting groove 5 can function.
[0039] The limiting slot 5 is arranged on the swing member 2, the limiting member 6 is cylindrical, and the limiting member 6 is integrally formed on the moving member 4; the swing member 2 is a fan-shaped plate member, and the swing member 2 comprises a connecting rod part 21 and a fan-shaped extension part 22, the connecting rod part 21 and the extension part 22 are integrally formed, the extension part 22 is located beside the connecting rod part 21, the connecting rod part 21 is rotationally connected with the base 1 and the moving frame 3, and the limiting slot 5 is arranged on the extension part 22; the shape of the swing member 2 is different from that of the rod member in the general mechanical stretching unit 9, and the swing member 2 is designed into a special shape due to the need of arranging the limiting slot 5, so that the swing member 2 changes from the original connecting rod for swinging into a plate-shaped body.
[0040] The limiting slot 5 is T-shaped, the movement space 51 is arc-shaped and inclined downward from front to back; the locking end 52 is inclinedly extended from the middle part of the movement space 51 to the front part; the locking end 52 and the movement space 51 are configured such that when the limiting member 6 gradually approaches the locking end 52 from the movement space 51, the swing stroke of the limiting member 6 in the movement space 51 gradually decreases. When the limiting member 6 enters the locking end 52, it remains stable, and because the swing stroke of the limiting member 6 gradually decreases when moving from the movement space 51 to the locking end 52, the whole gradually enters a stable state until finally locked.
[0041] More specifically, the shape of the movement space 51 is special, which is divided into an upper part and a lower part by the locking end 52, the width of the upper part of the movement space 51 gradually increases under the action of the inclined surface from top to bottom, and the width of the lower part of the movement space 51 remains unchanged from bottom to top and increases under the action of the arc surface to the opening of the locking end 52; this makes the swing stroke of the limiting member 6 larger when it is closer to the periphery of the movement space 51, and when gradually approaching the locking end 52, the swing stroke gradually decreases under the action of the arc surface and the inclined surface, and slowly enters the locking end 52, finally realizing swing locking.
Claims
1. A swing locking assembly for a mechanical extension device, characterized in that: The device includes a base, a swinging component, a motion frame, and a moving component mounted on the motion frame. The base serves as the main support, the swinging component is rotatably connected to the base, and the swinging component is also rotatably connected to the motion frame, causing the motion frame to swing on the base. The swinging component is configured to enable the mechanical extension device to swing, and the moving component is configured to drive the mechanical extension device to switch states. One of the moving component and the swinging component has a limiting groove, and the other of the moving component and the swinging component has a limiting component. The limiting groove includes a motion space and a locking end. The motion space and the locking end are connected. When the limiting component is in the motion space, the moving component and the moving component can swing relative to the base. When the limiting component moves from the motion space into the locking end, the motion frame and the moving component are stationary relative to the base. The moving component is rotatably mounted on the motion frame. When the moving component drives the mechanical extension device to switch states, the limiting component switches between the motion space and the locking end.
2. The swing locking assembly for a mechanical extension device according to claim 1, characterized in that: The limiting groove is formed on the swing member, which is a fan-shaped plate. The swing member includes a connecting rod and a fan-shaped extension. The extension is located next to the connecting rod and is rotatably connected to the base and the motion frame. The limiting groove is formed on the extension.
3. The swing locking assembly for a mechanical extension device according to claim 2, characterized in that: The connecting rod and the extension are integrally formed.
4. The swing locking assembly for a mechanical extension device according to claim 2, characterized in that: The limiting component is cylindrical and is integrally formed on the moving component.
5. The swing locking assembly for a mechanical extension device according to claim 1, characterized in that: The limiting groove is T-shaped, the movement space is arc-shaped and slopes downward from front to back; the locking end extends in the middle of the movement space towards the front; the locking end and the movement space are configured such that when the limiting member gradually moves from the movement space toward the locking end, the swing stroke of the limiting member in the movement space gradually decreases.
6. The swing locking assembly for a mechanical extension device according to claim 1, characterized in that: The base includes an upwardly extending support seat, the upper end of the swing member is rotatably connected to the upper end of the support seat, the lower end of the swing member is rotatably connected to the motion frame, and the motion member is located beside the swing member.
7. The swing locking assembly for a mechanical extension device according to claim 1, characterized in that: The base is also equipped with auxiliary components, which are rotatably connected to the base and the motion frame respectively. The auxiliary components and the swinging components are arranged at intervals, and the auxiliary components are configured as auxiliary swinging components to make the motion frame swing on the base.
8. The swing locking assembly for a mechanical extension device according to claim 7, characterized in that: The swing component is located in front of the auxiliary component, and the distance between the connection points of the auxiliary component and the swing component on the base is greater than the distance between the two on the motion frame.