CN220884626U - Saddle stand pipe of children bicycle and children bicycle - Google Patents

Abstract

The application relates to a saddle vertical pipe of a children bicycle and a children bicycle, wherein the saddle vertical pipe is arranged on the bicycle and is used for connecting a frame of the bicycle with a saddle body of the bicycle, the height of the saddle body connected to the saddle vertical pipe can be adjusted by adjusting the connection position of the saddle vertical pipe and the frame, and a height adjusting mark is arranged on the outer wall of the saddle vertical pipe along the length direction, wherein the height adjusting mark at least comprises a recommended height value mark which is convenient to identify and is matched with an optimal height interval. According to the application, the recommended height value mark and the height adjusting mark are arranged on the saddle vertical pipe, and the recommended height value mark gives a suggestion for adjusting the saddle height to a user. The suggested zero graduation mark and the adjustment height mark set based on the suggested zero graduation mark can give a suggestion to the user to select a vehicle model. The saddle body can be efficiently, quickly and accurately adjusted to the optimal height suitable for riding in the adjustment process.

Description

Saddle stand pipe of children bicycle and children bicycle

Technical Field

The application relates to the technical field of children bicycles, in particular to a saddle stand pipe of a children bicycle and a children bicycle.

Background

Children's bicycles have a very high popularity, with almost every child having a child's own carriage. Often riding the children bicycle, not only can bring the amusement of playing for children, but also can play a good exercise role, and promote the physical health and mental development of children. Children's bicycles are typically installed and adjusted by adult guardians in accordance with experience, feel and product specifications. The children are riding the in-process, but because children's age reason, can't clear, accurate, timely description feedback for guardianship for children probably cause the damage of riding at the in-process of riding.

The saddle is too high, the crotch of the child can be worn, the waist and leg muscles can be excessively stretched in the riding process, and the child is easy to fear the bicycle; the saddle is too low, legs cannot stretch normally, the force is difficult to exert, and the knee joint is easy to stretch outwards. For a long time, the unscientific children bicycle setting can influence the limb movement and the muscle development of children, and then influence the body health.

The saddle body of children's bicycle passes through saddle riser and children's bicycle's frame to be connected, and at present, children's bicycle's saddle body's height can be adjusted through adjusting saddle riser, in the use, guardianship person is according to the position of experience adjustment saddle riser, can not be comparatively accurate with saddle body height adjustment to the best adaptation's that is suitable for children position, still have the condition emergence that causes children's motion damage, perhaps need through a large amount of adjustment just can barely touch the preferred position, and have no direct replicability.

Disclosure of utility model

The application aims to provide a child bicycle saddle stand pipe and a child bicycle, which are convenient for guiding a user to quickly and accurately adjust by calibrating a better value after a large number of tests on the saddle stand pipe.

The application provides a saddle vertical pipe of a children bicycle, which adopts the following technical scheme:

In a first aspect, the application provides a child bicycle saddle stand pipe, which adopts the following technical scheme:

A saddle vertical tube of children bicycle is arranged on the bicycle for connecting the frame of the bicycle with the saddle body of the bicycle, and the height of the saddle body connected with the saddle vertical tube can be adjusted by adjusting the connection position of the saddle vertical tube and the frame,

The saddle vertical pipe is characterized in that a height adjusting mark is arranged on the outer wall of the saddle vertical pipe along the length direction, wherein the height adjusting mark at least comprises a recommended height value mark which is convenient to identify and matches with the optimal height interval.

Through adopting above-mentioned technical scheme, set up recommended height and take the value sign on saddle riser, identified the child height that is fit for using. The child using the child bicycle can find the corresponding scale position on the saddle stand pipe of the bicycle according to the height of the child bicycle, and adjust the scale position to the recommended height value identification position of the corresponding height, namely the optimal height interval for the child bicycle with the size. In the adjustment process, the saddle body can be adjusted to the optimal height suitable for riding in a high-efficiency, quick and accurate one-step manner, and the good protection of the body health of children in riding is realized. That is, the recommended height value identifies a suggestion to the user to adjust the saddle height.

Preferably, the height adjustment mark further comprises a recommended zero scale mark which is arranged on the outer wall of the saddle vertical pipe and used for the connection position mark of the saddle vertical pipe and the frame, and an adjustment height mark which is arranged based on the recommended zero scale mark.

By adopting the technical scheme, the height-adjusting mark can be regarded as a safety line, and can be used for prompting that the saddle stand pipe is not excessively pulled out upwards. And the recommended zero graduation mark and the adjustment height mark set based on the recommended zero graduation mark can give the user a suggestion of selecting the vehicle model.

Preferably, the recommended height value mark and the height adjustment mark comprise one or more of scale marks, numbers, letters, symbols, colors, shapes, hollows, bulges and depressions.

By adopting the technical scheme, the identification style is disclosed.

Preferably, the section of the saddle vertical pipe is in a hollow or non-hollow round, regular polygon-like or non-regular polygon structure.

By adopting the technical scheme, the style of the saddle stand pipe is disclosed.

In a second aspect, the application provides a children bicycle, which adopts the following technical scheme:

A children bicycle comprises a frame, a saddle vertical pipe, a saddle body and a handlebar, wherein the saddle is connected with the frame through the saddle vertical pipe, and the handlebar is connected to the frame; and the height of the saddle body connected to the saddle stand pipe can be adjusted by adjusting the connection position of the saddle stand pipe and the frame, and the saddle stand pipe is the saddle stand pipe of the children bicycle.

Through adopting above-mentioned technical scheme, through setting up recommended height value sign on the saddle riser of children's bicycle, use children of this children's bicycle, according to its own height, just can find corresponding scale position on the saddle riser of bicycle. In the adjustment process, the saddle body can be adjusted to the optimal height suitable for riding in a high-efficiency, quick and accurate one-step manner, and the good protection of the body health of children in riding is realized.

Optionally, the connection position of the handlebar and the frame is provided with at least two gear adjustments; the outer wall of the saddle vertical pipe is provided with a recommended height value identifier with the same number of gears as the connection position of the handlebar and the frame.

Through adopting above-mentioned technical scheme, disclose children bicycle when adjusting the handlebar, be provided with corresponding recommended height and take the value sign on saddle riser.

The application has at least one of the following beneficial technical effects:

1. According to the application, the recommended height value mark is arranged on the saddle stand pipe, so that the height of a child suitable for use is marked. The child using the child bicycle can find the corresponding scale position on the saddle stand pipe of the bicycle according to the height of the child bicycle, and adjust the scale position to the recommended height value identification position of the corresponding height, namely the optimal height interval for the child bicycle with the size. In the adjustment process, the saddle body can be adjusted to the optimal height suitable for riding in a high-efficiency, quick and accurate one-step manner, and the good protection of the body health of children in riding is realized. That is, the recommended height value identifies a suggestion to the user to adjust the saddle height.

2. The height adjustment mark can be regarded as a safety line, and can be used for prompting that the saddle stand pipe is not excessively pulled out. And the recommended zero graduation mark and the adjustment height mark set based on the recommended zero graduation mark can give the user a suggestion of selecting the vehicle model.

Drawings

FIG. 1 is a schematic structural view of an embodiment of the saddle seat tube of the present application.

FIG. 2 is a schematic diagram of a bicycle simulation state in a verification process according to the present application.

FIG. 3 is a schematic diagram of another bicycle simulation state in a verification process according to the present application.

FIG. 4 is a schematic diagram of a bicycle simulation state in a second verification mode according to the present application.

FIG. 5 is a schematic diagram of another bicycle simulation state in the second verification provided by the present application.

FIG. 6 is a schematic diagram of a simulated bicycle status in a third verification provided by the present application.

FIG. 7 is a schematic diagram of another bicycle simulation state in the third verification provided by the present application.

The child height and model of the stroller of fig. 8 match the recommendation table.

Reference numerals illustrate: 1. a saddle stand pipe; 11. recommending height value identification; 12. adjusting the height mark; 2. a saddle body; 3. a frame; 4. a handle bar; 5. and (3) a crank.

Detailed Description

The present application will be described in further detail with reference to the accompanying drawings.

The present embodiment is merely illustrative of the present application and is not intended to limit the present application, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as necessary, but are protected by patent laws within the scope of the present application.

The embodiment of the application discloses a saddle vertical pipe 1 of a children bicycle and a children bicycle with the saddle vertical pipe 1.

At present, for children's bicycles, the saddle stand pipe 1 is generally capable of adjusting the height, but no graduation line is usually marked, the individual saddle stand pipe 1 is marked with only a safety line and no graduation information, and a very small part of the saddle stand pipe is marked with equidistant graduation information, and the graduation is only a standard graduation for indicating the moving length. Can not provide basis for the scientific adjustment of the children bicycle.

Referring to fig. 1, the application discloses a saddle stand pipe 1 of a children bicycle, wherein a height adjusting mark is arranged on the outer wall of the saddle stand pipe 1 along the length direction. The height adjustment mark at least comprises a recommended height value mark 11 which is convenient to identify and matches the optimal height interval, the recommended height value marks 11 are unequal-interval marks, and the marked recommended height value marks 11 are the heights of children instead of the moving distance. The child using the child bicycle can find the corresponding scale position on the saddle vertical pipe 1 of the bicycle according to the height of the child bicycle, and adjust the scale position to the recommended height value identification 11 of the corresponding height, namely the optimal height interval for the child bicycle with the size. In the adjusting process, the saddle body 2 can be efficiently, quickly, accurately and one-step adjusted to the optimal height suitable for riding, and the good protection of the body health of children in riding is realized. That is, the recommended height value indicator 11 gives the user a suggestion to adjust the saddle height.

Referring to fig. 1, the height adjustment mark may further include a recommended zero scale mark provided on the outer wall of the saddle seat tube 1 for identifying the connection position of the saddle seat tube 1 with the vehicle frame 3, and an adjustment height mark 12 provided based on the recommended zero scale mark. The height adjustment marks 12 are equally spaced marks. The recommended zero scale mark is a standard zero line in bicycle assembly, and in the process of connecting and installing the saddle vertical pipe 1 and the bicycle frame 3, the recommended zero scale mark can be used as a standard for installation. In the installation of the saddle seat tube 1 in connection with the frame 3, although installation can be performed on the upper or lower part of the recommended zero-scale mark, the safety and reliability of the installation can be ensured. The height adjustment mark 12 may be considered as a safety line that is not easily pulled up too much. If a user, or purchaser, is adjusting the saddle height, the recommended height value indicia 11 is significantly closer to the recommended zero scale indicia of the height adjustment indicia 12, or is below the recommended zero scale indicia, indicating that the model vehicle is already small for the user, a larger model vehicle may be selected. Conversely, if a user or purchaser is adjusting the saddle height, the recommended height value indicia 11 is excessively clear above the recommended zero scale indicia of the height adjustment indicia 12, and if the distance is greater, indicating that the model vehicle is already larger for the user, a smaller model vehicle may be selected. That is, the recommended zero graduation mark, and the adjustment height mark 12 set based on the recommended zero graduation mark give the user a suggestion of selecting the vehicle model.

The recommended height value mark 11 and the height adjustment mark 12 can be displayed in a form containing one or more of scale marks, numbers, letters, symbols, colors, shapes, hollowed-out parts, bulges and depressions, so that the display mark is favorable for clarity, and a user can conveniently adjust the display mark.

In this embodiment, the saddle seat tube 1 is a hollow circular tubular body structure, and the corresponding portion of the frame 3 where the saddle seat tube 1 is mounted is also configured as a hollow circular tubular body structure, so as to facilitate insertion of the saddle seat tube 1 into the frame 3. Of course, the saddle stand pipe 1 can be arranged into other various shapes capable of meeting adjustment, for example, the section of the saddle stand pipe 1 is of a hollow or non-hollow structure, the hollow structure is light and simple, the non-hollow solid structure has high structural strength and high durability; the cross-sectional shape of the saddle seat tube 1 may be a standard shape such as a circular shape or a regular polygon, may be a regular polygon-like structure similar to a regular polygon, and may be a non-regular polygon structure such as a rectangle or a rectangle-like structure, or may be any other special-shaped structure, depending on the processing such as chamfering of the regular polygon. As special-shaped structure, the saddle stand pipe 1 can be creatively designed to have a very attractive effect, such as a torch shape, and a mark embedded in the engraving is arranged on a solid rod shape. Of course, the structural design of the saddle stand pipe 1 is creative, and the position of the saddle stand pipe 1 mounted on the frame 3 matched with the saddle stand pipe is often required to be correspondingly improved so as to adapt to the special shape, so that the saddle stand pipe 1 is arranged on a bicycle and is used for connecting the frame 3 of the bicycle with the saddle body 2 of the bicycle, and the height of the saddle body 2 connected to the saddle stand pipe 1 can be adjusted by adjusting the connection position of the saddle stand pipe 1 and the frame 3, so that the saddle stand pipe is convenient, quick and accurate to mount and adjust the height.

The height-adjusting mark 12 of the present application is calibrated in millimeters based on a defined standard zero line.

The recommended height value indicator 11 marked on the saddle seat tube 1 of the present application is the result of a test performed by a system. The relevant technology on the current market is arranged, and the cake training system can be used for protecting the healthy exercise of the bicycle riding lovers, and the riding gesture is captured by measuring the body limb data to optimize each data, so that parameters suitable for users are formulated. However, the Bike fixing system is a dedicated adult bicycle scientific system, however, for the field of children bicycles, a perfect bicycle adjusting method suitable for children health and growth is not provided. The inventor finds that if the rake fit system applicable to adults is applied to children in the process of multiple tests, the obtained saddle height is generally high for the children, so that the legs of the children are too large in angle, the children are inconvenient to get on or off, and the fear of riding the children can be aggravated due to the too high height.

For this purpose, we have made a number of tests for children's bicycles, by which the relevant identification of the saddle seat tube 1 is calibrated and verified. The children bicycle comprises a frame 3, a saddle vertical pipe 1, a saddle body 2 and a handlebar 4, wherein the saddle is connected with the frame 3 through the saddle vertical pipe 1, and the handlebar 4 is connected with the frame 3; and through adjusting the position of connection of saddle riser 1 and frame 3, can adjust the height of the saddle body 2 of connecting on saddle riser 1, after passing the test, mark 11, adjustment height mark 12 are markd and verified to the recommended height value of saddle riser 1, obtain accurate reliable sign, provide the general regulation sign of universability for the user.

Specifically, in order to scientifically perfect and adapt to the physical health and growth and development characteristics of children, the method for adjusting the height of the saddle body 2 of the children bicycle is mainly based on that the children bicycle comprises an adjustable saddle vertical pipe 1 provided with a plurality of value marks matched with the optimal height; the plurality of value marks matched with the optimal height correspond to the height of the child, and the positions of the value marks are positions for enabling the child corresponding to the height to be in the optimal posture when riding; the saddle height is adjusted to adapt to the height of the child to be ridden by the recommended height value on the saddle seat tube 1 of the bicycle, so that the child to be ridden can at least keep the knee joint angle within a healthy range all the time in the riding process; according to the adjusting method, the children bicycle can be accurately and rapidly scientifically arranged according to visual information such as the height of the children under the condition that the system and professional children bicycle adjusting knowledge are not provided, adverse effects on muscle, joint and skeleton development are effectively avoided when the children ride the bicycle, irreversible damage is caused to the body posture, and good protection on the body health of the children is achieved.

For easy understanding, the test system used in the process of calibrating the relevant marks of the saddle seat tube 1 in the test of the children bicycle of the application specifically comprises:

A child simulation bicycle corresponding to the actual child bicycle; the first test child rides on the child simulation bicycle to simulate the actual riding process;

The device is arranged outside the children simulation bicycle, and only one camera device can be arranged for collecting complete images including children in the riding process of the children;

The electronic equipment is in communication connection with the camera device and is used for determining a plurality of test heights corresponding to the children simulation bicycle;

When a first test child of the target test height simulates a riding process on a child simulation bicycle, acquiring a first image and a second image sent by a camera device; the method comprises the steps that a first image is an image of a child simulating a bicycle when a crank 5 of the bicycle runs to the highest point of the circumference, a second image is an image of the crank 5 runs to the lowest point of the circumference, a target test height is any one of a plurality of test heights, gesture information corresponding to the first test child of the target test height when a saddle stand pipe 1 is positioned at each position is determined according to the first image and the second image, and a target position corresponding to the optimal gesture information is determined from each position according to the gesture information corresponding to the saddle stand pipe 1 when the saddle stand pipe 1 is positioned at each position; the attitude information indicates an angle corresponding to the highest point and an angle corresponding to the lowest point of the circumference at which the crank 5 is operated, and the angles include at least: the knee joint angle, the optimal posture information comprises an optimal angle interval of the child corresponding to the angle, and an association relation between different test heights and target positions corresponding to the different test heights is established; the association relationship is used for marking the recommended height value identification 11 position of the value identification matched with the optimal height interval of the saddle vertical pipe 1 of the actual children bicycle corresponding to the children simulation bicycle.

In one implementation manner, the positioning patches of the key parts of the body of the child are used for determining gesture information according to the coordinate information of each positioning patch in the image, and the gesture information at least comprises an angle corresponding to the highest point of the circumference of the crank 5 and a knee joint angle corresponding to the lowest point of the circumference.

For example, for a 12 inch children's bicycle, a plurality of test heights corresponding to the 12 inch children's bicycle are determined, the plurality of test heights including: 975mm, 1000mm, 1025mm, 1050mm, 1075mm and 1100mm; then selecting a first test child corresponding to the plurality of test heights from a plurality of test children (the test children basically accord with the measurement data of the human body size of the Chinese minors of GB/T26158-2010); then determining a first test child corresponding to a first test height from a plurality of first test children, wherein the first test child corresponding to the first test height is at least 1; positioning patches are arranged on the body key parts of the first test child, wherein the body key parts can comprise hip joints, knees and ankles (knee joint angles can be formed by hip joints, knee and ankle connecting lines), and the further body key parts can further comprise: foot (ankle joint angle can be formed by connecting the foot, ankle and knee), shoulder joint (hip joint angle can be formed by connecting the shoulder joint, hip joint and knee), elbow joint (upper arm and trunk angle can be formed by connecting the shoulder joint, elbow joint and hip joint); the saddle seat tube 1 is divided into a plurality of positions, and the saddle height corresponding to each position is different.

According to experience and a Bike fixing system test, the height or angle of the handlebar 4 is changed according to the different gear adjustment of the connection position of the handlebar 4 and the frame 3, when the handlebar 4 and the frame 3 are at different heights and angles, the riding posture of a user with the same height is changed when the user rides the bicycle, and the adaptation height to the height of the saddle body 2 is also changed, so that the height or angle of the handlebar 4 is changed, and the suggested height of the saddle body 2 is also different. At the same time, the suggested height of the saddle body 2 is different depending on the crank 5 of the pedal. For a first test child of a first test height, on the premise that the handle bar vertical tube of the handle bar 4 and the crank 5 of the pedal are determined, only the saddle vertical tube 1 is adjusted, only the saddle vertical tube 1 is arranged at a first position, and the first position is a position corresponding to any height, and the lowest position can be selected; when a first test child corresponding to a first test height simulates riding on a simulated bicycle, the camera device shoots pictures in real time and sends the pictures to the electronic equipment, the electronic equipment determines a first image when the crank 5 runs to the highest point of the circumference and a second image when the crank 5 runs to the lowest point of the circumference according to the real-time pictures, then the riding gesture information is dynamically captured through the first image and the second image, whether the riding gesture information is matched with the optimal gesture information is determined, and if so, the first position is determined to be a target position; if the two types of the test children are not matched, the position of the saddle vertical pipe 1 is adjusted, and the first test child corresponding to the first test height repeatedly executes the process until the target position of the first test height, which accords with the optimal posture information, is obtained.

Then repeating the process for the next height to be tested until the target positions corresponding to all the heights to be tested are obtained; then establishing association relations between different test heights and target positions corresponding to the different test heights; the association relation is used for marking the value identification position of the saddle vertical pipe 1 of the children bicycle, which is matched with the optimal height interval.

Through the mode, the target positions corresponding to different obtained test heights are probably not equidistant, but all the positions correspond to the height of the child, so that the position of the saddle can be adjusted according to the height of a person when the child is riding, the child bicycle is more matched with the riding child, the riding posture of the riding child can be effectively optimized, the sports injury is reduced and prevented, and the comfort and the sports performance are improved.

Specifically, the method is applied to a test system in the process of calibrating the recommended height value mark 11 of the saddle vertical pipe 1. The test system comprises: a child simulation bicycle corresponding to the actual child bicycle; the shooting device is arranged in front of the children simulation bicycle and is used for acquiring complete images including children in the riding process of the children; an electronic device communicatively connected to the image pickup device for executing a method of determining a value-identifying position; the electronic device may be a server or a terminal device, where the server may be an independent physical server, or may be a server cluster or a distributed system formed by a plurality of physical servers, or may be a cloud server that provides cloud computing services. The terminal device may be a smart phone, a tablet computer, a notebook computer, a desktop computer, etc., but is not limited thereto, and the terminal device and the server may be directly or indirectly connected through wired or wireless communication.

In the test calibration, the method for calibrating the recommended height value identification 11 comprises the following steps: step 110-step 140, wherein:

step S110, determining a plurality of test heights corresponding to the children simulation bicycle;

wherein the position of the saddle seat tube 1 of the child simulation bicycle is adjustable.

In the experimental calibration of the application, the scheme provided by the application can be applied to various children bicycles, and the adjustable part of the children bicycle comprises a saddle stand pipe 1. The size of the children's bicycle is not limited, and may be any of 12 inches, 14 inches, 16 inches, 18 inches, and 20 inches. For children's bicycles of different sizes, the applicable children are different, the applicable children's bicycle of 12 inches is applicable to children's height range 975mm-1100mm, the applicable children's bicycle of 14 inches is applicable to children's height range 975mm-1125mm, the applicable children's bicycle of 16 inches is applicable to children's height range 1100mm-1200mm, the applicable children's bicycle of 18 inches is applicable to children's height range 1100mm-1300mm, and the applicable children's bicycle of 20 inches is applicable to children's height range 1200mm-1400mm.

In the test calibration, the child bicycle corresponds to an actual child bicycle, and the child bicycle is different from the actual child bicycle only in that the child bicycle cannot move forward along with the stepping of the child, and the child bicycle is identical in structure and size of each part.

In the test calibration, only the saddle stand pipe 1 is adjusted on the premise of determining the handlebar stand pipe and the crank 5, the optimal setting parameters, namely the target position, of the children bicycle which accords with a rider are determined, the recommended height value identification 11 is calibrated on the outer wall of the saddle stand pipe 1, or the accuracy of the identified recommended height value identification 11 is verified, and at least 3 groups or more of test heights are selected for complete experiments in the embodiment of the application.

In one implementation, determining a plurality of test heights corresponding to a child bicycle includes: determining the height range according to the model of the children bicycle; multiple test heights are divided according to the height range.

After the current size of the children bicycle is determined, determining a test height range corresponding to the size of the children bicycle according to the corresponding relation between the preset size of the children bicycle and the height range; and a plurality of test heights are selected from the test height range, the test height range can be divided based on the interval distance to obtain a plurality of test heights, the interval distance can be 10mm-30mm, and can be specifically 10mm, 15mm, 20mm, 25mm or 30 mm.

When a first test child is selected, the test child is subjected to advanced measurement of human body data, including leg length, thigh, shank, crotch joint, ankle joint, arm length, foot length and the like of the child, according to GB/T26158-2010 Chinese minors human body size, GB/T22187-2008/ISO15535:2003 establishes the national standard of the general requirements of anthropometric databases for matching size bicycles for testing children.

Step S120, when a first test child with a target test height simulates a riding process on a child simulation bicycle, acquiring a first image and a second image sent by a camera device;

The first image is an image of the first test child of the target test height when the saddle seat tube 1 is at each position and the crank 5 of the child simulation bicycle driven by the first test child of the target test height when the saddle seat tube 1 is at each position is operated to the highest point of the circumference, the second image is an image of the second test child of the target test height when the crank 5 of the child simulation bicycle driven by the first test child of the target test height is operated to the lowest point of the circumference, and the target test height is any one of the test heights.

The method aims at obtaining a first image and a second image which correspond to the plurality of test heights corresponding to the child simulation bicycle.

The saddle seat tube 1 is adjustable to a plurality of positions, the positions can be obtained by dividing according to preset intervals based on the adjustable length, the preset intervals can be 1mm, 1.25mm, 1.5mm, 1.75mm, 2mm, 2.5mm or 3mm, the saddle seat tube is not limited in test calibration, and each position can be used for stably fixing the saddle seat.

Step S130, determining corresponding posture information of a first test child of a target test height when the saddle seat post 1 is positioned at each position according to the first image and the second image, and determining a target position corresponding to the optimal posture information from each position according to the corresponding posture information when the saddle seat post 1 is positioned at each position;

Wherein, the gesture information indicates that the crank 5 runs to the angle corresponding to the highest point and the angle corresponding to the lowest point of the circumference, and the angles at least comprise: the knee joint angle and the optimal posture information comprise an optimal angle interval of the child corresponding to the angle. It is required that both the angle corresponding to the highest point (which is the smallest angle in the entire course of movement) and the angle corresponding to the lowest point (which is the largest angle in the entire course of movement) fall or substantially fall into the corresponding optimal angle interval. The optimal posture information in the test calibration of the application can be set through experience of technicians, and also can be set through experiments, in one case, the knee joint angle is 40-65 degrees in the optimal angle interval corresponding to the highest point, the optimal angle interval corresponding to the highest point is 100-165 degrees, and of course, the optimal angle interval corresponding to the highest point can be 120-135 degrees.

In the riding process, the angle of the knee joint directly influences the force distribution during riding and the health of the knee, if the angle of the knee joint is too large, excessive pressure can be applied to the knee, possibly resulting in injury of the knee, and if the angle of the knee joint is too small, sufficient supporting force can not be provided, so that riding becomes difficult or unstable. Therefore, during riding, the bending condition of the knee joint of the child needs to be particularly focused, so that the child can bend moderately, thereby being beneficial to maintaining riding stability and reducing pressure received by the knee of the child.

Therefore, in the test calibration, the application takes the knee joint angle as the judging standard for determining whether the position of the saddle vertical pipe 1 is at the optimal position, and can correct the posture of the child when riding to a certain extent.

Further, the gesture information may further include at least one of: hip joint angle, ankle joint angle, upper arm and torso angle. The accuracy of determining the target position can be further improved by taking various angles as the basis for determining the position of the saddle vertical pipe 1.

Step S140, establishing association relations between different test heights and target positions corresponding to the different test heights;

The association relation is used for marking the value identification position of the saddle vertical pipe 1 of the actual children bicycle corresponding to the children simulation bicycle, which is matched with the optimal height interval.

After the target position corresponding to each test height is obtained, an association relationship is established, so that when the value identification position of the optimal height interval can be matched on the saddle stand pipe 1 based on the association relationship, for example, the value identification position on the saddle stand pipe 1 of a 12-inch children bicycle is marked, according to the association relationship, the target position corresponding to 975mm is determined to be a position a, the target position corresponding to 1000mm is determined to be a position b, the target position corresponding to 1025mm is determined to be a position c, the target position corresponding to 1050mm is determined to be a position d, the target position corresponding to 1075mm is determined to be a position e and the target position corresponding to 1100mm is determined to be a position f, the value identification 1 can be set at the position a, the value identification 2 can be set at the position b, the value identification 3 can be set at the position c, the value identification 4 can be set at the position d, the value identification 5 can be set at the position e, and the value identification 6 can be set at the position f.

In test calibration, when a value identification position is determined for a certain children bicycle, a plurality of test heights corresponding to the children bicycle are determined, then when a first test child of each test height simulates a riding process on a simulated bicycle, a first image of a crank 5 of the simulated bicycle running to the highest point and a second image of the lowest point when the saddle vertical pipe 1 is positioned at each position, which are sent by a camera device, are obtained, then posture information corresponding to the first test child of a target test height when the saddle vertical pipe 1 is positioned at each position is determined, and according to the posture information corresponding to the saddle vertical pipe 1 when the saddle vertical pipe 1 is positioned at each position, target positions corresponding to the optimal posture information are determined from each position, so that the association relation between different test heights and the target positions corresponding to different test heights is established, and then the value identification position of the children bicycle is drawn through the association relation, so that the value identification position of the saddle vertical pipe 1 of the actual children bicycle corresponding to the simulated bicycle is marked, and the saddle height is accurately and efficiently adjusted to the optimal position suitable for the children.

In the test calibration, the application can analyze the image to directly obtain the attitude information for determining the attitude information, can identify the positioning patch through the image, and then determine the attitude information based on the measuring tool.

Therefore, the gesture information is directly obtained by analyzing the image, in one possible implementation mode of the application in test calibration, the body key part of the first test child of the target test height is stuck with a positioning patch, and the body key part corresponds to the gesture information;

According to the first image and the second image, determining posture information corresponding to the first test child of the target test height when the saddle seat tube 1 is at each position, including:

Identifying coordinate information of each positioning patch in the first image; identifying coordinate information of each positioning patch of the second image;

Based on the coordinate information of each positioning patch in the first image and the coordinate information of each positioning patch in the second image, corresponding posture information when the saddle seat tube 1 is at each position is determined.

The positioning patches are arranged on a plurality of body key parts of a first test child of the target test height, the body key parts correspond to the gesture information, and the positioning patches are mainly used for determining angles and taking the angles as the gesture information. In the test calibration, the size, the color and the material of the positioning paste are not limited, and identifiable positioning patterns can be arranged on the positioning paste for accurate positioning.

The crank 5 is operated to a first image and a second image corresponding to the highest point and the lowest point of the circumference respectively by performing motion capturing according to a plurality of images transmitted by the image pickup device.

In one possible scenario, when the tiles have a particular color, the process of determining the coordinate information for each tile may include: performing color analysis on the target image by using a color histogram/color clustering mode, determining the area where the specific color in the target image is located, taking the area as the area of the positioning patch if the number of the areas is 1, and determining the coordinate information of the positioning patch according to the position where the area is located; if the number of the areas is greater than 1, matching is carried out according to the shape of the areas and the shape of the preset positioning paste, the successfully matched areas are used as the areas where the positioning paste is located, and the coordinate information of the positioning paste is determined according to the positions where the successfully matched areas are located, wherein the target image is a first image and a second image.

In another possible case, when the tiles have a specific shape, the process of determining the coordinate information of each tile may include: and detecting edge information in the target image by using an edge detection algorithm, determining a region with a specific shape according to the edge information, and determining coordinate information of a positioning patch according to the position of the region with the specific shape, wherein the target image is a first image and a second image.

Of course, determining coordinate information of the location patch according to the location of the region (the region successfully matched and/or the region of a specific shape) may include: and extracting the features in the region, matching the extracted features with the features of the positioning pattern, determining the coordinates of the successfully matched features, and determining the coordinates as the coordinate information of the positioning paste. In this scheme, through setting for big location subsides to preliminary location area carries out, and then carries out accurate location through the location pattern that sets up on the location subsides, in order to obtain the coordinate information of location subsides.

In another possible scenario, the process of determining coordinate information for each tile may include: performing difference processing on the target image and the contrast image to obtain positioning patch areas corresponding to the positioning patches; the contrast image is an image acquired when the body key part of the first test child with the target test height is not attached with the positioning paste, and coordinate information corresponding to each positioning paste area is determined; the target image comprises a first image and/or a second image. The method is simple, the calculated amount is small, and the position information of the positioning paste can be rapidly determined through the method.

After the coordinate information of each positioning patch is determined, the angle representing the posture information is obtained according to the connection sequence of points between the corresponding body key parts of the positioning patches and the coordinate information.

It should be noted that, for a certain position, a plurality of initial pose information may be obtained by recognizing pose information of a plurality of first images, then an average value or a maximum value is obtained according to the plurality of initial pose information as the pose information of the position, and for the maximum value, the maximum value corresponding to the first image is the smallest angle in all the first images, and the maximum value of the second image is the largest angle in all the second images. The number of the plurality of the application can be 1, 2, 3 or more, and the application is not limited in test calibration.

Therefore, in the test calibration, the application improves the efficiency of determining the attitude information by determining the coordinate information of the positioning paste in the first image and the second image and then automatically determining the attitude information based on the coordinate information.

It is worth noting that the accuracy of the determination of the optimal posture information directly affects the determination result of the association relationship, and in order to improve the accuracy of the optimal posture information, the optimal posture information at least comprises an optimal angle interval corresponding to a knee joint angle, and may further comprise at least one of an optimal angle interval corresponding to a hip joint angle, an optimal angle interval corresponding to an ankle joint angle, and an optimal angle change range interval corresponding to an upper arm and a trunk angle.

Thus, in a test calibration, one possible implementation of the present application provides a process for determining an optimal angle interval, comprising:

Acquiring first muscle tension data of the trunk and the thighs of a second test child under different angles, and taking the minimum first muscle tension data as an optimal angle interval corresponding to the hip joint angle of the child;

Acquiring second muscular tension data of thighs and calves of a second test child under different angles, and taking the minimum second muscular tension data as an optimal angle interval corresponding to the knee joint angle of the child;

Acquiring third muscle tension data of the lower leg and the foot of the second test child under different angles, and taking the minimum third muscle tension data as an optimal angle interval corresponding to the ankle joint angle of the child;

Acquiring the angle change amplitude of the second test children when riding the bicycle, wherein the angle difference value is the angle change amplitude of the upper arm and the trunk when the crank 5 runs to the highest point of the circumference and the angle of the upper arm and the trunk when the crank runs to the lowest point; and determining an optimal angle change amplitude interval corresponding to the upper arm and the trunk angle according to the plurality of angle change amplitudes.

The dynamic test is preset, a plurality of second test children are selected, and the information such as the height of the second test children is not limited in the test calibration, so that the information is only needed by the children with the length of 900mm-1400 mm. And setting a muscle tension tester for the second test child, wherein the muscle tension tester is used for collecting muscle tension data of the second test child under different angles, and the size of the muscle tension data can reflect the tension degree of muscles so as to evaluate the stability and the muscle control capability of corresponding joints. In the riding process of the child, when the muscle tension is minimum, the child is in a comfortable state, so that in the test calibration, the optimal angle interval corresponding to the hip joint angle, the optimal angle interval corresponding to the knee joint angle, the optimal angle interval corresponding to the ankle joint angle and the optimal angle change amplitude interval corresponding to the upper arm and the trunk angle are obtained through multiple dynamic tests.

It should be noted that in the test calibration, according to the results of multiple dynamic tests, the influence on the angle between the upper arm and the trunk is small and does not exceed 10% when the saddle is adjusted up and down. Conversely, when the angle between the upper arm and the trunk fluctuates greatly, the saddle is required to be adjusted up and down greatly, and the angle of the knee joint certainly exceeds the optimal angle interval, so that the optimal angle variation range in the embodiment of the application is preferably 10%.

For determining the target position, the matching degree of each angle and the corresponding optimal angle interval and the numerical value determined by the weight corresponding to each angle can be adopted to determine the target position from a plurality of positions; the optimal angle intervals for the angles may also be matched in turn to determine the most suitable target position.

Thus, in one possible implementation, determining, from among the respective positions, a target position corresponding to the optimal attitude information, based on the attitude information corresponding to the saddle seat tube 1 when in the respective position, includes:

Determining the matching degree of the angle in the corresponding attitude information and the optimal angle interval when the saddle vertical pipe 1 is positioned at each position;

determining a matching numerical value corresponding to each position according to the matching degree and the weight corresponding to each angle;

Selecting a position corresponding to the largest matching numerical value from the matching numerical values as a target position corresponding to the optimal posture information; wherein the weight of the knee joint angle is greatest among the plurality of angles.

Specifically, determining the matching degree of the angle in the gesture information corresponding to each position and the optimal angle interval includes:

When any angle of the gesture information falls into a corresponding optimal angle interval, determining the matching degree of any angle to be 1;

When any angle of the gesture information does not fall into the corresponding optimal angle interval, determining the matching degree of any angle as the ratio of any angle to the corresponding range endpoint.

The weight user corresponding to each angle can be set according to actual requirements, wherein the weight of the knee joint angle is equal to the weight of the ankle joint angle is equal to the weight of the hip joint angle, the weight of the upper arm and the trunk angle is equal to the weight of the knee joint angle is equal to the weight of the hip joint angle, the weight of the ankle joint angle is equal to the weight of the upper arm and the trunk angle.

The matching value may be determined by the following equation: y=x1×λ1+x2×λ2+x3+x4×λ4, wherein y is a matching value, X1 represents a matching degree of the knee joint angle, and λ1 is a weight representing the knee joint angle; x2 represents the degree of matching of the ankle angle, and λ2 represents the weight of the ankle angle; x3 represents the degree of matching of the hip joint angle, and λ3 is the weight representing the hip joint angle; x4 represents the degree of matching of the upper arm and torso angle, and λ4 is the weight representing the upper arm and torso angle, λ1+λ2+λ3+λ4=1.

The determined size of the matching data represents the standardization of the riding posture of the child when the child rides at the position, and the position with the largest matching data is taken as the target position.

Therefore, in the embodiment of the application, the matching numerical value corresponding to the position is determined based on the matching degree and weight of the angle in the gesture information corresponding to each position and the optimal angle interval, and then the target position is automatically and efficiently screened based on the matching numerical value.

In another possible implementation, when the angle includes: when the knee joint angle, the hip joint angle, the ankle joint angle, the upper arm and the trunk angle are, according to the posture information of the saddle vertical pipe 1 when being positioned at each position, the target position corresponding to the optimal posture information is determined from each position, and the method comprises the following steps:

Judging whether a first initial target position in which the knee joint angle, the hip joint angle, the ankle joint angle, the upper arm and the trunk angle fall into a corresponding optimal angle change interval exists in each position; if yes, determining a target position according to the first initial target position; if not, determining a second initial target position of the knee joint angle falling into the corresponding optimal angle change interval from the positions, and determining the target position according to the second initial target position.

When the first initial target positions exist, if the number of the first initial target positions is 1, determining the first initial target positions as target positions; if the number of first initial target positions is greater than 1, an intermediate position among the plurality of first initial target positions is determined as a target position.

When the first initial target positions do not exist, a plurality of second initial target positions of which the knee joint angles fall into the corresponding optimal angle change intervals are determined from the positions, and if the number of the second initial target positions is 1, the second initial target positions are determined to be target positions; if the number of second initial target positions is greater than 1, the target position is determined from among the plurality of second initial target positions.

Specifically, please refer to the following procedure:

S1, determining a plurality of first positions which accord with an optimal angle interval corresponding to knee joints of thighs and calves according to gesture information corresponding to each position; if the number of the first positions is 1, entering S2, if the number of the first positions is greater than 1, entering S3, and if the first positions do not exist, taking the position of the gesture information closest to the optimal angle interval corresponding to the knee joints of the thighs and the calves as a target position, or taking all the positions as a plurality of first positions, and entering S3;

S2, taking the first position as a target position;

S3, determining a plurality of second positions which accord with the optimal angle interval corresponding to the first key angle from the plurality of first positions according to the gesture information corresponding to the plurality of first positions; if the number of the second positions is 1, entering S4; if the number of the second positions is greater than 1, entering S5, if the second positions do not exist, taking the first positions as the second positions, and entering S5;

s4, taking the second position as a target position;

S5, determining a plurality of third positions which accord with the optimal angle interval corresponding to the second key angle from the plurality of second positions according to the gesture information corresponding to the plurality of second positions; if the number of the third positions is 1, entering S6, if the number of the third positions is greater than 1, entering S7, if the third positions do not exist, taking the plurality of second positions as a plurality of third positions, and entering S7;

S6, taking the third position as a target position;

S7, determining target positions of the range of the minimum fluctuation range of the angles of the upper arm and the trunk from the third positions according to the gesture information corresponding to the third positions;

The first key angle and the second key angle correspond to thigh and hip joint angles and ankle joint angles of the lower leg and the foot.

In the above embodiment, the determination of the recommended height value indicator 11 on the saddle seat tube 1 is described from the point of view of the process flow. The recommended height value mark 11 is calibrated on the outer wall of the saddle vertical pipe 1.

The following embodiments describe a children's bicycle, which is described in detail below, in contrast to embodiments of the method for determining the position of the height-valued identifier 11 recommended by the seat post 1.

In the following description, the children's bicycle further includes: the handle bar stem and the crank 5 of the handle bar 4 are both considered as part of the handle bar 4, are both handle bars 4, and the structure of the handle bar 4 is unchanged in different embodiments.

Further, in order to verify the rationality of the association relationship, test result verification is performed. Reference is made specifically to the following authentication one to authentication three.

And (3) verifying the simulation state of riding the 14-inch bicycle by the child.

1. Referring to fig. 2, when a child with a height of about 975mm is recommended to ride a 14-inch child, the seat tube clamp is fastened by a special wrench by aligning the position of the recommended height graduation line 975mm of the saddle seat tube 1 with the upper surface of the seat tube clamp. When the foot pedal on one side is positioned at the lowest point of the circumference, the knee joint angle of the thigh and the shank of the child is 122 degrees (the optimal angle is 120-135), and the small value is taken by the young child.

2. Referring to fig. 3, when a child with a height of about 1100mm is recommended to ride a 14-inch child, the position of the height scale mark 1100mm recommended by the saddle seat post 1 is aligned with the upper surface of the seat pipe clamp, and the seat pipe clamp is fastened by a special wrench. When the foot pedal on one side is positioned at the lowest point of the circumference, the knee joint angle of the thigh and the shank of the child is 125 degrees (the optimal angle is 120-135).

And secondly, verifying the simulation state of riding the 16-inch bicycle by the child.

1. Referring to fig. 4, when a child with a height of about 1100mm is recommended to ride a 16-inch child, the position of the height scale mark 1100mm recommended by the saddle seat post 1 is aligned with the upper surface of the seat pipe clamp, and the seat pipe clamp is fastened by a special wrench. When the foot pedal on one side is positioned at the lowest point of the circumference, the knee joint angle of the thigh and the shank of the child is 123 degrees (the optimal angle is 120-135).

2. Referring to fig. 5, when a child with a height of about 1200mm is recommended to ride a child with a height of 16 inches, the seat tube 1 is aligned with the seat tube clamp at a position of 1200mm of the recommended height scale line, and the seat tube clamp is fastened by a special wrench. When the foot pedal on one side is positioned at the lowest point of the circumference, the knee joint angle of the thigh and the shank of the child is 125 degrees (the optimal angle is 120-135).

And thirdly, simulating a state that the child rides the 20-inch bicycle.

1. Referring to fig. 6, when a child with a height of about 1200mm is recommended to ride a 20-inch child, the seat post 1 is recommended to have a height scale line 1200mm to be aligned with the upper surface of the seat pipe clamp, and the seat pipe clamp is fastened by a special wrench. When the foot pedal on one side is positioned at the lowest point of the circumference, the knee joint angle of the thigh and the shank of the child is 128 degrees (the optimal angle is 120-135).

2. Referring to fig. 7, when a child with a height of about 1400mm is recommended to ride a 20-inch child, the seat post 1 is aligned with the seat pipe clamp at a position of 1400mm of the recommended height scale mark, and the seat pipe clamp is fastened by a special wrench. When the foot pedal on one side is positioned at the lowest point of the circumference, the knee joint angle of the thigh and the shank of the child is 134 degrees (the optimal angle is 120-135), and the child takes a large value.

Through the verification test, the scheme provided by the application is feasible, and the efficiency and the accuracy of adjusting the saddle by children can be improved through the scheme provided by the application.

Referring to fig. 8, the child height and model matching recommendation table is a recommendation value of a child bicycle of a certain model.

According to experience and a Bike fixing system test, the height or angle of the handlebar 4 is changed according to the different gear adjustment of the connection position of the handlebar 4 and the frame 3, when the handlebar 4 and the frame 3 are at different heights and angles, the riding posture of a user with the same height is changed when the user rides the bicycle, and the adaptation height to the height of the saddle body 2 is also changed, so that the height or angle of the handlebar 4 is changed, and the suggested height of the saddle body 2 is also different. In the test calibration of the present application, as another calibration mode, the handle bar 4 is changed by changing the handle bar stem of the handle bar 4. In the application, the change of the handlebar stem is regarded as different gear positions regulated by the handlebar 4, and the recommended height value identification 11 with the same gear position number as the connection position of the handlebar 4 and the frame 3 is calibrated on the outer wall of the saddle stem 1 in different calibration processes by changing the handlebar stem of the handlebar 4, namely, regulating the different gear positions regulated by the handlebar 4.

According to the application, a recommended height value identifier 11 and an adjusting height identifier 12 are arranged on the saddle vertical pipe 1, and the recommended height value identifier 11 gives a user a suggestion for adjusting the saddle height. The recommended zero graduation mark and the adjustment height mark 12 set based on the recommended zero graduation mark can give the user a suggestion of selecting a vehicle model. In the adjusting process, the saddle body 2 can be efficiently, quickly, accurately and one-step adjusted to the optimal height suitable for riding, and the good protection of the body health of children in riding is realized.

In the application, the child bicycle with the scale calibrated in advance has better accuracy through combining a large amount of statistical data and a large amount of tests. In use, however, the advice for accurately determining the adjustment cannot be made in real time, entirely in accordance with the individual characteristics of the rider. The proportion of different limbs of the person can be different, and the pre-calibrated mark can be further optimized on the premise of meeting the basic use.

As a further embodiment of the children's bicycle of the present application, the above-mentioned children's bicycle, test system, calibration method, etc. may be integrated into the children's bicycle, and accurate and personalized adjustment advice may be given to the rider when riding on the bicycle according to the actual situation.

For this purpose, a plurality of camera devices are arranged on the children bicycle of the application, and are used for collecting information in the monitoring process. The camera device can be arranged at the rear part of the frame 3, the front part of the handlebar 4 and the like, the specific position is based on the convenience and accuracy of acquisition, and the electronic equipment and the terminal equipment are arranged on the children bicycle, wherein the electronic equipment and the terminal equipment can be integrated. The plurality of camera devices take pictures from different angles in real time, send the pictures to the electronic equipment, give calibrated suggestions or adjusted suggestions after the electronic equipment is analyzed as described above, and output the suggestions on the terminal equipment. The user can adjust according to the adjustment advice.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (8)

1. A saddle vertical pipe of a children bicycle is characterized in that the saddle vertical pipe (1) is arranged on the bicycle and used for connecting a frame (3) of the bicycle with a saddle body (2) of the bicycle, the height of the saddle body (2) connected with the saddle vertical pipe (1) can be adjusted by adjusting the connection position of the saddle vertical pipe (1) and the frame (3),

The saddle vertical pipe (1) is characterized in that a height adjusting mark is arranged on the outer wall of the saddle vertical pipe along the length direction, wherein the height adjusting mark at least comprises a recommended height value mark (11) which is convenient to identify and matches with the optimal height interval.

2. A child bicycle saddle seat tube according to claim 1, wherein,

The height adjusting mark further comprises a recommended zero scale mark which is arranged on the outer wall of the saddle vertical pipe (1) and used for identifying the connection position of the saddle vertical pipe (1) and the frame (3), and an adjusting height mark (12) which is arranged based on the recommended zero scale mark.

3. A child bicycle saddle seat tube according to claim 2, wherein,

The recommended height value mark (11) and the height adjustment mark (12) comprise one or more of scale marks, numbers, letters, symbols, colors, shapes, hollowed-out parts, bulges and depressions.

4. A child bicycle saddle seat tube according to claim 1 or 2 or 3, wherein,

The section of the saddle vertical pipe (1) is in a hollow or non-hollow round, regular polygon-like or non-regular polygon structure.

5. The children bicycle comprises a frame (3), a saddle vertical pipe (1), a saddle body (2) and a handlebar (4), wherein the saddle body (2) is connected with the frame (3) through the saddle vertical pipe (1), and the handlebar (4) is connected to the frame (3); and the height of the saddle body (2) connected to the saddle stand pipe (1) can be adjusted by adjusting the connection position of the saddle stand pipe (1) and the frame (3), characterized in that the saddle stand pipe (1) is a children bicycle saddle stand pipe (1) according to any one of claims 1-4.

6. A children's bicycle according to claim 5, wherein,

The connection position of the handlebar (4) and the frame (3) is provided with at least two gear adjustments; the outer wall of the saddle vertical pipe (1) is provided with recommended height value identification (11) with the same number of gears at the connection position of the handlebar (4) and the frame (3).

7. A children's bicycle according to claim 6, wherein,

The children bicycle is provided with a camera device.

8. A children's bicycle according to claim 7, wherein,

The children bicycle is provided with a terminal device.