阅读说明：本技术 一种小腿伸缩结构 (Shank extending structure ) 是由 张鑫盛 张世洪 罗正义 王炳国 于 2021-06-07 设计创作，主要内容包括：本发明公开了一种小腿伸缩结构,本发明实施例的小腿伸缩结构通过设置有一边开口的导轨11与导向管配合,实现伸缩,通过止动块和限位滑块配合实现最长伸缩限位,使得导向管在两侧导轨内可同步伸缩,避免伸缩过程中的卡顿问题,提升用户体验。同时导轨一侧开口为导向管的伸缩提供了较大的预留量,从而可降低导向管的制造精度,降低成本,且导轨一侧开口可方便维修添加润滑油等,延长小腿伸缩结构的使用寿命,进一步地降低成本。(The invention discloses a shank telescopic structure, which is characterized in that a guide rail 11 with an opening at one side is matched with a guide pipe to realize telescopic action, a stop block is matched with a limit slide block to realize longest telescopic limit, so that the guide pipe can be synchronously telescopic in the guide rails at two sides, the jamming problem in the telescopic process is avoided, and the user experience is improved. Meanwhile, the opening on one side of the guide rail provides a large reserved amount for the extension and contraction of the guide pipe, so that the manufacturing precision of the guide pipe can be reduced, the cost is reduced, the opening on one side of the guide rail can be conveniently maintained and added with lubricating oil and the like, the service life of the shank extension structure is prolonged, and the cost is further reduced.)

1. A shank telescopic structure is characterized by comprising an upper shank iron frame, a lower shank iron frame and a position adjusting device, wherein the upper shank iron frame is provided with a guide rail with an opening at one side;

one end of the guide pipe is also provided with a limiting sliding block, and the size of the limiting sliding block is smaller than the inner diameter of the guide rail and larger than the size of the opening of the stop block;

one end of the position adjusting device is connected with the upper shank iron frame, and the other end of the position adjusting device is connected with the lower shank iron frame;

the lower shank iron frame is provided with a pedal which can be abutted against the foot of a user;

the foot of a user can drive the guide pipe to slide up and down in the guide rail through the pedal or the position adjusting device can drive the guide pipe to slide up and down in the guide rail, and when the stop block is contacted with the limiting slide block, the lower shank iron frame stretches to the longest distance.

2. The shank extension and retraction structure according to claim 1, wherein a stopper is further provided on the guide tube, the stopper is located above the limit slider, the stopper is larger than the limit slider and is matched with the inner diameter of the guide rail, and the stopper is made of a soft material having a hardness smaller than that of the limit slider.

3. The calf extension and retraction structure according to claim 1, wherein said stop block opening inner wall interface is an elongated circular shape, the narrowest dimension of said elongated circular shape matching the outer diameter of said guide tube so that said guide tube can be deflected within said opening.

4. The calf extension and retraction structure according to claim 3, wherein said stop block is made of an elastic material which is elastically deformable to accommodate said deflection when said guide tube deflects within said opening.

5. The calf extension and retraction structure according to claim 1, wherein the inner wall of said stop block opening is of a gear-like configuration to reduce the contact surface with said guide tube.

6. The calf extension and retraction structure according to claim 1, wherein the outer wall of said stop block is of a gear-like structure to reduce the contact surface with said guide rail.

7. The calf extension and retraction structure according to claim 1, wherein said guide tube is circular in cross-section.

8. The calf extension and retraction structure according to claim 1, wherein said rail is C-shaped or U-shaped in cross-section.

9. The calf extension and retraction structure according to claim 1, wherein said position adjustment means is a spring or a push rod.

10. The shank extension structure according to claim 9, wherein a first spring hanger is provided on the upper shank iron frame, a second spring hanger is provided on the lower shank iron frame, one end of the spring is hung on the first spring hanger, and the other end of the spring is hung on the second spring hanger.

Technical Field

The invention relates to the technical field of massage, in particular to a shank stretching structure.

Background

With the increasing improvement of living standard of people, people pay more and more attention to health and health preservation, and the massage armchair gradually enters thousands of households. At present, the development of the massage chair is rapid, the technical process is gradually improved, and new materials, new technologies and new processes are continuously applied to new products of the massage chair. The principle of the massage chair is that the massage is carried out by utilizing the mechanical rolling force effect and the mechanical force extrusion, the massage chair is health care equipment which can simulate hands to carry out massage operations such as massage, beating, kneading and the like on the back and other parts of a human body, and has the functions of dredging channels and collaterals, circulating qi and blood and keeping yin and yang balance of the body, so that people can feel relaxed muscles and flexible joints after massage, and the massage chair can stimulate the spirit of people and eliminate fatigue and has important effect on ensuring the health of the human body. In order to massage and relax the whole body, the human body parts such as thighs, shanks, soles, two arms and the like are massaged locally, so when a human body lies on the massage chair, the two shanks are clamped in the grooves corresponding to the shank massage components, two feet step on the foot massage bracket, and due to the difference of the heights of the human body, a telescopic mechanism is required to be arranged, and the position of the foot massage bracket is adjusted according to the length of the legs.

The both sides of the fixing frame of the existing telescopic mechanism are often square tubes, the telescopic frame has 4 contact surfaces when the telescopic frame stretches in the square tubes, so that when the stretching of the two sides of the fixing frame cannot guarantee complete synchronization, the problem that the telescopic frame stretches and blocks can exist, in order to reduce the problem of blocking, two guide rails of the fixing frame are required to be completely parallel and consistent, the technological requirement is high, and the cost is also high. In view of this, the present application is specifically made.

Disclosure of Invention

The invention provides a shank stretching structure aiming at the defects of the prior art, thereby solving the problems of blockage, higher process requirement and higher cost of the existing shank stretching structure.

The invention provides a shank telescopic structure which is characterized by comprising an upper shank iron frame, a lower shank iron frame and a position adjusting device, wherein the upper shank iron frame is provided with a guide rail with an opening at one side;

one end of the guide pipe is also provided with a limiting sliding block, and the size of the limiting sliding block is smaller than the inner diameter of the guide rail and larger than the size of the opening of the stop block;

one end of the position adjusting device is connected with the upper shank iron frame, and the other end of the position adjusting device is connected with the lower shank iron frame;

the lower shank iron frame is provided with a pedal which can be abutted against the foot of a user;

the foot of a user can drive the guide pipe to slide up and down in the guide rail through the pedal or the position adjusting device can drive the guide pipe to slide up and down in the guide rail, and when the stop block is contacted with the limiting slide block, the lower shank iron frame stretches to the longest distance.

By adopting the technical scheme, the invention can obtain the following technical effects: compared with the prior art, the shank telescopic structure provided by the embodiment of the invention realizes telescopic effect by matching the guide rail 11 with an opening at one side with the guide pipe, realizes longest telescopic limit by matching the stop block with the limit slide block, enables the guide pipe to be synchronously telescopic in the guide rails at two sides, avoids the problem of jamming in the telescopic process, and improves user experience. Meanwhile, the opening on one side of the guide rail provides a large reserved amount for the extension and contraction of the guide pipe, so that the manufacturing precision of the guide pipe can be reduced, the cost is reduced, the opening on one side of the guide rail can be conveniently maintained and added with lubricating oil and the like, the service life of the shank extension structure is prolonged, and the cost is further reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIGS. 1-3 are schematic structural views illustrating a calf stretching structure according to an embodiment of the invention;

FIG. 4 is a partially enlarged schematic view of the calf extension structure of FIG. 1;

FIG. 5 is a schematic structural view of the upper calf iron of FIG. 1;

FIG. 6 is a schematic structural view of the lower shank iron of FIG. 1;

FIG. 7 is a schematic diagram illustrating a stopper shown in FIG. 1;

FIG. 8 is a schematic view of the stopper shown in FIG. 1;

FIG. 9 is a schematic cross-sectional view of the guide rail and stop block of FIG. 1;

FIG. 10 is a schematic cross-sectional view of the guide tube and stop block of FIG. 1;

FIGS. 11-12 are schematic cross-sectional views of the calf stretching structure.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

With reference to fig. 1 to 12, an embodiment of the present invention provides a shank stretching structure, including an upper shank iron frame 1, a lower shank iron frame 2, and a position adjusting device, where the upper shank iron frame 1 is provided with a guide rail 11 with an opening at one side, the lower shank iron frame 2 is provided with a guide tube 21, the bottom end 11 of the guide rail is provided with a stop block 111, the stop block 11 forms an opening a, and the guide tube 21 passes through the opening a of the stop block 111 and is slidably disposed in the guide rail 11;

one end of the guide tube 21 is also provided with a limit slide block 211, and the size of the limit slide block 211 is smaller than the inner diameter of the guide rail 11 and larger than the size of the opening A of the stop block 111;

one end of the position adjusting device is connected with the upper shank iron frame 1, and the other end of the position adjusting device is connected with the lower shank iron frame 2;

the lower shank iron frame 2 is provided with a pedal which can be abutted against the foot of a user;

the foot of the user can drive the guide tube 21 to slide up and down in the guide rail 11 through the foot pedal or the position adjusting device can drive the guide tube 21 to slide up and down in the guide rail 11, and when the stop block 111 touches the limit slide block 211, the lower shank iron frame 2 is stretched to the maximum distance.

That is to say, the shank telescopic structure of the embodiment of the invention realizes telescopic action by matching the guide rail 11 with an opening at one side with the guide pipe, realizes longest telescopic action and limitation by matching the stop block with the limiting slide block, enables the guide pipe to be synchronously telescopic in the guide rails at two sides, avoids the problem of jamming in the telescopic process, and improves user experience. Meanwhile, the opening on one side of the guide rail provides a large reserved amount for the extension and contraction of the guide pipe, so that the manufacturing precision of the guide pipe can be reduced, the cost is reduced, the opening on one side of the guide rail can be conveniently maintained and added with lubricating oil and the like, the service life of the shank extension structure is prolonged, and the cost is further reduced.

Specifically, the limiting slider 211 may be made of a rigid material with high hardness, and the limiting slider 211 is fixed on the guide tube 21 and slides up and down in the guide rail 11 together with the guide tube 21, so that the size of the limiting slider 211 is smaller than the inner diameter of the guide rail 11 to avoid scraping the inner diameter of the guide rail, and the size of the limiting slider 211 is larger than the size of the opening a of the stop block 111 to realize the maximum length limitation of the extension and retraction of the guide tube 21 by contacting with the stop block 111 when the guide tube 21 slides up and down in the guide rail 11, as shown in fig. 11 and 12.

Further, in an example, a limit block 212 is further disposed on the guide tube 21, the limit block 212 is located above the limit slider 211, the size of the limit block 212 is larger than the size of the limit slider 211 and matches with the inner diameter of the guide rail 11, and the limit block 212 is made of a soft material with hardness smaller than that of the limit slider 211, as shown in fig. 1 and 2, and fig. 11 and 12.

Specifically, the limiting block 212 is used for preventing the guide tube 21 from being separated from the opening side of the guide rail 11 due to the opening of one side of the guide rail 11 when the guide tube 21 is long in the guide rail and is deviated, so that the size of the limiting block 212 is matched with the inner diameter of the guide rail 11. Meanwhile, the limiting block 212 is also fixed on the guide tube 21 and slides up and down in the guide rail 11 along with the guide tube 21, so that the limiting block is made of a material with hardness smaller than that of the limiting slider 211, for example, a wear-resistant material such as plastic can be adopted to avoid scraping the inner wall of the guide rail 11.

Further, in one example, as shown in fig. 10, the cross section of the guide tube 21 is circular, and the limit block 212 and the limit slider 211 are arranged on the guide tube 21 at intervals; therefore, the limiting block 212 can be buffered when the limiting slide block 211 is in contact with the stop block 111, the acting force on the limiting block 212 is avoided, the consumption of the limiting block can be saved, and the material maintenance cost is reduced. Specifically, as shown in fig. 11 and 12, the size and positional relationship between the limiting block 211, the limiting block 212, the stopper 111, the opening a, the guide tube 21, and the guide rail 11 can be seen.

Further, in one example, as shown in fig. 10, the stopper 111 has an elongated circular shape at the inner wall interface of the opening a, and the narrowest part of the elongated circular shape is sized to match the outer diameter of the guide tube 21, so that the guide tube 21 can be displaced within the opening a. Specifically, the stopper 111 is in a long circular shape, the guide tube 21 can be guided and slide in the long circular shape, and a reserved amount of the guide tube 21 is reserved on the left-right parallelism, so that the machining precision requirement of the guide tube 21 is low, and the machining cost is reduced. Meanwhile, in the process that the guide tube 21 slides up and down, the contact surface of the guide tube 21 and the stop block is in line contact when the guide tube 21 stretches and retracts, so that the friction force is reduced, the problem of high friction caused by outward expansion of the guide tube 21 can be solved, the guide tube 21 can move freely and smoothly, and the problem of shank stretching and blocking is solved.

Further, in one example, the stopper 212 may also be made of an elastic material, and when the guide tube 21 is deflected in the elongated circular opening a, the stopper 212 may be elastically deformed in the guide rail 11 to adapt to the deflection.

Further, in one example, the inner wall of the opening a of the stopper 111 has a gear-like structure, so that the stopper 111 is in cylindrical line contact with the guide tube 21, thereby reducing the contact surface with the guide tube 21, reducing the friction force when the guide tube 21 is telescopic, and increasing the structural strength, as shown in fig. 10.

Further, in one example, as shown in fig. 9, the outer wall of the limiting block 212 has a gear-like structure to reduce the contact surface with the guide rail 11. The function is that when the guide pipe 21 is in telescopic work in the guide rail 11, the contact surface opposite to the inner wall of the guide rail 11 is in line contact or small surface contact, and the structural strength is increased, so that the friction force between the limiting block 212 and the guide rail 11 is reduced, and the telescopic work is smoother.

Further, in one example, the guide rail 11 is C-shaped or U-shaped in cross-section. As shown in fig. 9, the guide rail 11 is a semi-open type "C" guide rail, so that the requirement for parallelism of the left and right guide rails 11 with one open side is low, the processing cost is low, and the lubricant can be conveniently coated; the contact area between the limiting block 212 and the guide rail 11 is small, the friction force is small, and the resistance is small, so that the limiting block 212 is prevented from being deviated or clamped, and the limiting block 212 can smoothly slide up and down in the guide rail 11.

Specifically, fig. 5 shows a schematic configuration of the upper leg iron 1, and the structure of the guide rail 11 with one side open can be seen, fig. 6 shows a schematic configuration of the lower leg iron 2, and the structure of the guide tube 21 can be seen, fig. 7 shows a separate component configuration of the stopper 212, and fig. 8 shows a separate component configuration of the stopper 111.

Further, in one example, as shown in fig. 1 and 2, the position adjustment device is a spring 3 or a push rod. When the position adjusting device is a push rod (not shown in the figure), one end of the push rod is hinged with the upper shank iron frame 1, the other end of the push rod is hinged with the lower shank iron frame 2, the push rod stretches and pushes the lower shank iron frame 2 to slide up and down relative to the upper shank iron frame 1, the mode is an electric automatic mode, and according to the detected leg length of the user, the push rod stretches and is fixed to the leg length position. When the position adjusting device is a spring 3, a first spring hanging lug 12 is arranged on the upper shank iron frame 1, a second spring hanging lug 22 is arranged on the lower shank iron frame 2, one end of the spring 3 is hung on the first spring hanging lug 12, and the other end of the spring is hung on the second spring hanging lug 22. The mode is a manual mode, a user treads a pedal to control the shank to stretch according to self requirements, and when the device is not used, the lower shank iron frame 2 resets under the tension of the spring 3.

It should be noted that the leg stretching structure according to the embodiment of the present invention can be applied to a massage chair, and the massage chair body can be a massage chair on the market, which is not described in detail in the embodiment of the present invention.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.