CN113520783B

CN113520783B - Shank extending structure

Info

Publication number: CN113520783B
Application number: CN202110633401.0A
Authority: CN
Inventors: 张鑫盛; 张世洪; 罗正义; 王炳国
Original assignee: Xiamen Comfort Science and Technology Group Co Ltd; Xiamen Healthcare Electronic Co Ltd
Current assignee: Xiamen Comfort Science and Technology Group Co Ltd; Xiamen Healthcare Electronic Co Ltd
Priority date: 2021-06-07
Filing date: 2021-06-07
Publication date: 2024-03-19
Anticipated expiration: 2041-06-07
Also published as: CN113520783A

Abstract

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 operation, and a stop block is matched with a limit sliding block to realize longest telescopic limit, so that the guide pipe can synchronously stretch in the guide rails at two sides, the problem of clamping in the telescopic operation is avoided, and the user experience is improved. Meanwhile, the opening on one side of the guide rail provides larger reserved quantity 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 calf extension structure is prolonged, and the cost is further reduced.

Description

Shank extending structure

Technical Field

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

Background

Along with the increasing living standard of people, people are increasingly concerned about and attach importance to health and health maintenance, and the massage armchair gradually goes into thousands of families. At present, the massage armchair has rapid development, the technology process is perfect, and new materials, new technology and new technology are continuously applied to new products of the massage armchair. The principle of the massage chair is that the massage is carried out by utilizing the rolling force action of the machinery and the mechanical force extrusion, and the massage chair is health-care equipment which can simulate the massage operation of hands on the back of a human body and the like, has the functions of dredging channels and collaterals, enabling qi and blood circulation and keeping yin and yang balance of the body, can feel the relaxation of muscles and flexible joints after the massage, enables people to be inspired, eliminates fatigue and has important functions of ensuring the health of the human body. In order to massage and relax the whole body, the parts of human body such as thighs, calves, soles, double arms and the like are often subjected to local massage, so when a human body lies on a massage chair, two calves are clamped in grooves corresponding to the calves massage components, feet are trampled on the feet massage brackets, and because the heights of the human body are different, a telescopic mechanism is required to be arranged, and the positions of the feet massage brackets are adjusted according to the leg lengths.

The existing telescopic machanism mount both sides often are square tube, and the expansion bracket has 4 contact surfaces when this square intraductal flexible, and when flexible can not guarantee to be synchronous completely like this, can have the problem that the expansion bracket stretches out and draws back the card to be put in order to reduce the condition of this kind of card problem, need to ensure that two guide rails of mount are parallel unanimous completely, and is higher to the technological requirement like this, and the cost is also higher simultaneously. In view of this, the present application is specifically proposed.

Disclosure of Invention

The invention provides a shank telescopic structure aiming at the defects of the prior art, thereby solving the problems of clamping, higher technological requirements and higher cost of the existing shank telescopic 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 a guide rail with one side open is arranged on the upper shank iron frame, a guide pipe is arranged on the lower shank iron frame, a stop block is arranged at the bottom end of the guide rail, the stop block forms an opening, and the guide pipe is slidably arranged in the guide rail through the opening of the stop block;

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

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;

a foot pedal is arranged on the lower shank iron frame and can be abutted against the feet of a user;

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

By adopting the technical scheme, the invention can obtain the following technical effects: compared with the prior art, the calf telescopic structure provided by the embodiment of the invention realizes the telescopic action through the cooperation of the guide rail 11 with the opening on one side and the guide pipe, and realizes the longest telescopic limit through the cooperation of the stop block and the limit sliding block, so that the guide pipe can synchronously stretch and retract in the guide rails on two sides, the problem of clamping in the telescopic action is avoided, and the user experience is improved. Meanwhile, the opening on one side of the guide rail provides larger reserved quantity 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 calf extension structure is prolonged, and the cost is further reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIGS. 1 to 3 are schematic views showing a structure of a lower leg extension structure according to an embodiment of the present invention;

FIG. 4 is a schematic view of the calf telescoping structure of FIG. 1 in a partially enlarged configuration;

FIG. 5 is a schematic view showing the structure of the upper calf iron frame of FIG. 1;

FIG. 6 is a schematic view showing the structure of the lower calf iron frame of FIG. 1;

FIG. 7 is a schematic diagram illustrating a structure of the stopper in FIG. 1;

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

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

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

fig. 11 to 12 are schematic cross-sectional views of the calf expansion structure.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1

Referring to fig. 1-12, an embodiment of the present invention provides a shank extension structure, which includes an upper shank iron frame 1, a lower shank iron frame 2, and a position adjusting device, wherein a guide rail 11 with one side open is provided on the upper shank iron frame 1, a guide tube 21 is provided on the lower shank iron frame 2, a stop block 111 is provided at the bottom end 11 of the guide rail, the stop block 11 forms an opening a, and the guide tube 21 is slidably disposed in the guide rail 11 through the opening a of the stop block 111;

a limit sliding block 211 is further arranged at one end of the guide tube 21, and the size of the limit sliding 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;

a foot pedal is arranged on the lower shank iron frame 2 and can be abutted against the feet 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 rest 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 contacts with the limit sliding block 211, the lower shank iron stand 2 stretches to the longest distance.

That is, the calf telescopic structure of the embodiment of the invention realizes the telescopic action through the cooperation of the guide rail 11 with one side being provided with the opening and the guide pipe, and realizes the longest telescopic limit through the cooperation of the stop block and the limit sliding block, so that the guide pipe can synchronously stretch in the guide rails at two sides, the problem of clamping in the telescopic action is avoided, and the user experience is improved. Meanwhile, the opening on one side of the guide rail provides larger reserved quantity 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 calf extension structure is prolonged, and the cost is further reduced.

Specifically, the limit slider 211 may be made of a rigid material with high hardness, for example, the limit 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 limit slider 211 is smaller than the inner diameter of the guide rail 11 to avoid scraping the inner diameter of the guide rail, and meanwhile, the size of the limit slider 211 is larger than the size of the opening a of the stop block 111 to realize that the guide tube 21 contacts the stop block 111 when sliding up and down in the guide rail 11, so as to realize maximum length limit of extension and retraction of the guide tube 21, as shown in fig. 11 and 12.

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

Specifically, the stopper 212 is provided to prevent the guide tube 21 from coming out of the opening side of the guide rail 11 when the guide tube 21 is long in the guide rail and is deviated, and thus the stopper 212 is sized to match the inner diameter of the guide rail 11 because the guide rail 11 is opened at one side. 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 material is made of a material with smaller hardness than the limiting block 211, such as a plastic or other wear-resistant material, so as 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 stopper 212 is disposed on the guide tube 21 at a distance from the stopper slider 211; therefore, the limiting block 212 can be buffered when the limiting sliding block 211 is contacted with the stop block 111, acting force is prevented from reaching the limiting block 212, consumable materials of the limiting block can be saved, and material maintenance cost is reduced. As shown in fig. 11 and 12, the dimensions and positional relationship among the stopper slider 211, stopper 212, stopper 111, opening a, guide tube 21, and guide rail 11 can be seen.

Further, in one example, as shown in fig. 10, the inner wall interface of the opening a of the stopper 111 is in an elongated circular shape, and the narrowest point of the elongated circular shape has a size matching the outer diameter of the guide tube 21, so that the guide tube 21 can be offset within the opening a. Specifically, the stop block 111 is in a long-strip shape, the guide tube 21 can slide in the long-strip shape in a guiding manner, and the guide tube 21 is reserved in 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 of sliding the guide tube 21 up and down, the contact surface is in line contact when the guide tube 21 stretches and contracts with the stop block, so that the friction force is reduced, the problem of high friction caused by the fact that the guide tube 21 stretches outwards can be solved, the guide tube 21 can move smoothly and freely, and the problem of stretching and clamping of the lower leg is solved.

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

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 surface line contact with the guide tube 21, thereby reducing the contact surface with the guide tube 21, reducing the friction force during the telescopic operation of the guide tube 21, and simultaneously 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, so as to reduce the contact surface with the guide rail 11. The function of the telescopic guide tube is that when the guide tube 21 stretches and stretches in the guide rail 11, the opposite contact surface of the guide rail 11 and the inner wall is in line contact or small surface contact, and meanwhile, 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 operation is smoother.

Further, in one example, the rail 11 is C-shaped or U-shaped in cross section. As shown in the above figure 9, the semi-open type C-shaped guide rail scheme of the guide rail 11 has the advantages that the parallelism requirement of the left and right guide rails 11 with one side open is low, the processing cost is low, and the lubricant is convenient to coat; the contact area of 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 shifting or being blocked, and the limiting block 212 can slide up and down in the guide rail 11 smoothly.

Specifically, fig. 5 shows a schematic view of the upper shank bracket 1, a schematic view of the lower shank bracket 2, a schematic view of the guide pipe 21, fig. 7 shows a separate component structure of the stopper 212, and fig. 8 shows a separate component structure of the stopper 111.

Further, in one example, as shown in fig. 1 and 2, the position adjusting means 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 calf iron frame 1, the other end of the push rod is hinged with the lower calf iron frame 2, the push rod stretches and pushes the lower calf iron frame 2 to slide up and down relative to the upper calf iron frame 1, the mode is an electric automatic mode, and the push rod stretches and is fixed to the leg length position according to the detected leg length of a user. 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 is hung on the second spring hanging lug 22. The manual pedal is used for controlling the expansion and contraction of the lower leg according to the self requirement, and when the pedal is not used, the lower leg iron frame 2 is reset under the tension of the spring 3.

It should be noted that the calf telescopic structure according to the embodiment of the present invention may be applied to a massage armchair, and the massage armchair body may be a massage armchair on the market in the prior art, which is not described in detail in the embodiment of the present invention.

While 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. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. The lower shank telescopic structure is characterized by comprising an upper shank iron frame, a lower shank iron frame and a position adjusting device, wherein a guide rail with one side open is arranged on the upper shank iron frame, a guide pipe is arranged on the lower shank iron frame, a stop block is arranged at the bottom end of the guide rail, an opening is formed by the stop block, and the guide pipe is slidably arranged in the guide rail through the opening of the stop block;

one end of the guide pipe is also provided with a limit sliding block, and the size of the limit sliding block is smaller than the inner diameter of the guide rail and larger than the size of the stop block opening; 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; a foot pedal is arranged on the lower shank iron frame and can be abutted against the feet of a user; the foot of a user can drive the guide tube to slide up and down in the guide rail through the foot pedal or the position adjusting device can drive the guide tube to slide up and down in the guide rail, and when the stop block is contacted with the limit sliding block, the lower shank iron frame is stretched to the longest distance;

the guide pipe is further provided with a limiting block, the limiting block is located above the limiting slide block, the size of the limiting block is larger than that of the limiting slide block and is matched with the inner diameter of the guide rail, and the limiting block is made of soft materials with hardness smaller than that of the limiting slide block.

2. The calf telescoping structure of claim 1, wherein the stop block opening inner wall interface is oblong, and the narrowest of the oblong is sized to match the outer diameter of the guide tube so that the guide tube can be deflected within the opening.

3. The calf telescoping structure of claim 2, wherein said stopper is made of an elastic material, said stopper being elastically deformable to accommodate said deflection when said guide tube deflects within said opening.

4. The calf telescoping structure of claim 1, wherein the inner wall of the stop block opening is a gear-like structure to reduce contact surface with the guide tube.

5. The calf telescoping structure of claim 1, wherein the stopper outer wall is gear-like in configuration to reduce contact surface with the rail.

6. The calf telescoping structure of claim 1, wherein the guide tube is circular in cross section.

7. The calf telescoping structure of claim 1, wherein the rail cross section is C-shaped or U-shaped.

8. The calf telescoping structure according to claim 1, wherein the position adjustment device is a spring or a pushrod.

9. The calf telescoping structure of claim 8, wherein a first spring hanger is provided on the upper calf iron frame, a second spring hanger is provided on the lower calf iron frame, and one end of the spring is hung on the first spring hanger, and the other end is hung on the second spring hanger.