Shoe simulation fitting test apparatus and method of testing

Abstract

The application discloses a shoe simulation test equipment and a test method thereof. The shoe simulation test equipment comprises a body provided with a tread surface; a driving mechanism provided with an output end adapted to move along a direction perpendicular to the tread surface; and a simulation foot model matched with the shape of a human foot, which moves with the output end of the driving mechanism to tread or move away from the tread surface, and the toe tip of the simulation foot model is inclined downward to the tread surface; the simulation foot model is provided with a body part and a toe part; the body part corresponds to the part of the human foot from the heel to the metatarsophalangeal joint and has bending resistance; and the toe part is made of flexible material, which corresponds to the toe part of the human foot and is adapted to bend relative to the body part. The test method of the shoe simulation test equipment is based on the above structural features. The technical scheme can simulate the state of the flexion of the forefoot and the extension of the toes when a real person walks or runs, and can obtain reliable test results of the wear resistance, bending resistance and tensile resistance of the finished shoes when the shoes walk or run. The structure is simple, the cost is low, and the test efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shoe performance test equipment, in particular to a shoe simulation test equipment and a test method thereof. BACKGROUND

[0002] In the field of shoe manufacturing, the durability of finished shoes (including bending resistance, wear resistance, and upper resistance to pulling) is an important indicator for detecting the quality of finished shoes. Currently, in the industry, the fatigue test of finished shoes is often realized by real people wearing, which has the problems of long test period, difficult to guarantee timeliness, and affecting product marketing. In addition, there is a problem that the test results differ greatly due to different test personnel.

[0003] Therefore, there are industry standards for testing the durability of shoes using test equipment at home and abroad. However, the existing test equipment, whether domestic or foreign, has the following shortcomings: 1. The shoe last used for wearing shoes is made of hard PVC material, which has a relatively hard surface, so it cannot form a good bending and extrusion effect, and the simulation effect of human walking or running behavior is poor; 2. In order to realize bending, the shoe last used in the existing test equipment needs to have a large recess on the foot surface, so the fullness of the whole shoe last is not enough and it does not have a complete toe part and ankle part, therefore, during the test, it cannot accurately simulate the extrusion and pulling phenomenon of different positions of the upper of the shoe under the behavior of human walking or running, and it cannot accurately obtain the durability test structure of the shoe; 3. The toe of the shoe is often pressed during the test of the existing test equipment, while the heel is free, and the freedom of the shoe corresponding to the forefoot part of the human foot is insufficient, therefore, it cannot well reflect the stress condition of the shoe when it is stepped on.

[0004] In addition, there are also test devices in the prior art that use mechanical legs to simulate human gait behavior. These test devices generally have problems such as large size, large floor area, complex structure, high cost, and low test effect. In addition, some of these test devices also have problems such as limited flexibility of the mechanical legs, poor gait simulation effect, poor simulation effect of the stress on the shoes, and large equipment wear and tear. For example, the whole shoe gait simulation device with application number 202011018685.4, in which the forearm and connecting part of the robot are used to simulate the functional part of the thigh of the human body, the leg support part is used to simulate the functional part of the lower leg of the human body, and the last is used to simulate the foot of the human body. On the structure, the two ends of the leg support part are directly connected with the connecting part and the last without setting a rotating structure for simulating the joint function. Therefore, the whole leg and foot of the robot are always on the same straight line, and the leg and foot complete the gait simulation by rotating around the same fulcrum in a state where the relative attitude remains unchanged. During the process, after the leg drives the foot to fall to the ground, the foot cannot directly complete the action of lifting the heel and stepping down the front palm at the landing site, but only gradually moves backward to the leg in the state of verticality relative to the ground simulation module, and then continues to slide relative to the ground simulation module to realize the bending of the shoe upper. The friction effect and bending effect achieved by this movement process are greatly different from the friction effect and bending effect formed by the shoes when the human body actually walks or runs. Moreover, the range of movement required by the leg and foot is extremely large (which is the reason why the ground simulation module is set to be movable in this patent application). Therefore, this device cannot truly simulate the state of the shoes stepping on the ground and freely bending when the human body walks or runs, and it cannot achieve the squeezing and pulling sensation of the shoe material caused by the human foot during activity. Therefore, the accuracy of the test results is questionable. In addition, the intensity of the mechanical leg stepping down in this device is often large, so the weight of the shoes and the last is large, and the service life is low. Although setting elastic shock-absorbing parts on the leg and foot can achieve a certain buffering effect, the wear and tear of the equipment and materials is still large, and the production and maintenance costs are difficult to control. SUMMARY

[0005] The present application aims to overcome the above-mentioned defects or problems in the background art, and provides a shoe simulation fitting test device and a testing method thereof, which can reliably simulate the state of the front palm bending and stepping out when a real person walks or runs, and obtain reliable wear resistance, bending resistance and tearing resistance performance tests of the finished shoes during walking or running. The structure is simple, the equipment cost is low, and the test efficiency is high.

[0006] To achieve the above-mentioned purpose, the following technical solutions are adopted:

[0007] A shoe simulation fitting test device, comprising: a body provided with a tread surface; a driving mechanism mounted on the body and having an output end adapted to reciprocate in a first direction; the first direction is perpendicular to the tread surface; a simulated foot mold matching the shape of a human foot, which is fixed to the output end of the driving mechanism and the sole side faces the tread surface, and is adapted to be driven by the driving mechanism to step on or away from the tread surface; the length direction of the simulated foot mold is inclined relative to the tread surface, and the toe tip thereof faces the tread surface; the simulated foot mold is provided with a body part and a toe part in sequence along the length direction thereof; the body part corresponds to the part of the human foot from the heel to the metatarsophalangeal joint and has bending resistance; the toe part is made of flexible material, which corresponds to the toe part of the human foot, and is adapted to step on the tread surface and bend relative to the body part.

[0008] Further, the angle between the length direction of the simulated foot mold and the tread surface is 0-80°.

[0009] Further, the driving mechanism has an angle adjusting structure; the simulated foot mold is adapted to adjust the angle and change the angle between the length direction thereof and the tread surface through the angle adjusting structure.

[0010] Further, the simulated foot mold is detachably fixed to the output end of the driving mechanism, and is adapted to be replaced according to the size and type of the shoe to be tested.

[0011] Further, the simulated foot mold comprises a silica gel part and a metal retaining part; the silica gel part matches the shape of the human foot and comprises an ankle and a foot body connected as one; the metal retaining part comprises a bottom plate and a connecting column; the bottom plate is wrapped in the foot body, and extends from the heel part of the foot body to the metatarsophalangeal joint part of the foot body; one end of the connecting column is fixed to the bottom plate, and the other end extends out of the top end of the ankle and is fixed to the output end of the driving mechanism; the part of the silica gel part located in front of the bottom plate constitutes the toe part, and the remaining part constitutes the body part together with the metal retaining part.

[0012] Further, a linear groove is provided on the bottom surface of the foot body corresponding to the metatarsophalangeal joint part; the groove extends obliquely relative to the width direction of the foot body, and the distance between the one end of the groove located outside the foot body and the heel of the foot body is 62-64% of the total length of the foot body, and the distance between the one end of the groove located inside the foot body and the heel of the foot body is 71-73% of the total length of the foot body.

[0013] Further, the width of the groove is 4.5-5.5mm, and the depth is 9-11mm.

[0014] Further, the surface layer of the silica gel part has a hardness of 17A-23A.

[0015] Further, the driving mechanism comprises a driving part and the angle adjusting structure; the driving part is installed on the machine body and has a driving end adapted to reciprocate along the first direction; the angle adjusting structure constitutes an output end of the driving mechanism and comprises a fixing part and a rotating part; the fixing part is fixedly connected with the driving end of the driving part and is provided with a pivot perpendicular to the first direction and a circular arc-shaped positioning hole arranged around the pivot; one end of the rotating part is directed towards the tread surface and is adapted to be fixedly connected with the artificial foot model, and the other end thereof is rotatably connected with the pivot and is provided with a positioning part adapted to be inserted into the positioning hole; the positioning part is adapted to be fixed at different positions in the positioning hole.

[0016] Further, the driving part is a screw stepper motor, a linear motor or a magnetic levitation motor.

[0017] Further, a controller is further included; the controller is installed on the machine body and is electrically connected with the driving mechanism to control the driving mechanism to operate at a preset speed and a preset stroke.

[0018] Further, a pressure sensor is further included; the pressure sensor is arranged corresponding to the tread surface and is electrically connected with the controller, and is used to detect the force value when the tread surface is stepped on by the artificial foot model; the controller is adapted to control the movement range of the driving mechanism along the first direction based on the force value detected by the pressure sensor, so that the force detected by the pressure sensor reaches a preset pressure value.

[0019] Further, the machine body comprises a cabinet and an artificial floor; the artificial floor is detachably fixedly connected with the cabinet, and a surface thereof constitutes the tread surface; the artificial floor is adapted to be replaced according to test requirements to obtain the tread surface with different surface characteristics; the pressure sensor is arranged below the artificial floor.

[0020] Further, the cabinet is provided with a climate chamber; the climate chamber is provided with a temperature regulator, a humidity regulator, a wind generator, an ultraviolet light generator and a rain and mist generator; the output end of the driving mechanism, the artificial foot model and the artificial floor are all located in the climate chamber; the controller is further adapted to control the temperature regulator, the humidity regulator, the wind generator, the ultraviolet light generator and the rain and mist generator to operate according to preset values, respectively.

[0021] Further, the machine body is further provided with an operation panel electrically connected with the controller.

[0022] The technical scheme also provides a shoe fatigue test method using the shoe simulation try-on test equipment, comprising the following steps: step 1, selecting a simulation foot mold matched with the size of the shoe to be tested and installing the simulation foot mold on the output end of the driving mechanism; putting a sock on the simulation foot mold; and putting the shoe to be tested on the simulation foot mold with the sock; step 2, starting the driving mechanism to drive the shoe to be tested to step on or move away from the stepping surface in the first direction; step 3, after the driving mechanism completes the operation, taking off the shoe to be tested, and observing the appearance of the shoe to be tested and recording.

[0023] Compared with the prior art, the above scheme has the following beneficial effects:

[0024] 1. In the present application, the shape of the simulation foot mold matches the shape of the human foot, and the shape is full, so it can reliably simulate the situation of the shoe being squeezed due to bending during walking or running, so as to effectively identify the durability of the shoe material. In the simulation foot mold, the body part has good bending resistance, which simulates the characteristics that the human foot from the heel to the metatarsophalangeal joint cannot be bent due to the support of the tarsal bone and metatarsal bone. The toe part is made of flexible material, which is connected to the front end of the body part and can bend relative to the body part, and is used to simulate the toe part of the human foot on the front side of the metatarsophalangeal joint. When testing the fatigue characteristics of the shoe, the sock and the shoe to be tested are put on the simulation foot mold, and the driving mechanism is started. The simulation foot mold and the shoe to be tested are continuously switched between stepping on the stepping surface and moving away from the stepping surface by the driving mechanism, so as to realize the test. The test equipment has the advantages of simple structure, low cost, small space occupation, and high test efficiency. The test efficiency is extremely high, and the test period of the fatigue of the new product can be greatly shortened to ensure the time to market the product. Specifically, the test principle of the present application is that when the simulation foot mold and the shoe to be tested move towards the stepping surface, the length direction of the simulation foot mold is inclined relative to the stepping surface, and the toe tip of the simulation foot mold faces the stepping surface. Therefore, the part of the shoe to be tested corresponding to the toe part of the simulation foot mold first contacts the stepping surface and gradually bends relative to the part corresponding to the body part, so as to simulate the bending of the shoe when the heel of the human foot is lifted and pedaled relative to the ground during walking or running, and the stress conditions (bending, compression, stretching, and extrusion) of each position of the upper. Since the most significant stress phenomenon of the shoe occurs when the heel of the human foot is lifted and the toe part of the foot is pedaled during walking or running, that is, when the human foot is bent, the stress condition of the shoe is the most significant. Therefore, in the test equipment of the present application, the simulation foot mold is arranged in a toe-down shape to directly form the posture of the toe part pedaling and the body part heel lifting during stepping, which is sufficient to achieve the simulation effect and meet the fatigue test requirements of the shoe to be tested due to bending.

[0025] During the process that the toe part of the simulation footform moves towards the tread surface, the toe part will form a forward sliding relative to the tread surface. During the sliding process, the displacement and friction degree of the measured shoe relative to the tread surface are similar to the displacement and friction degree of the human foot relative to the ground when the human foot is lifted after the forefoot pushes down during walking or running. Therefore, the test device provided by the present application can also simulate the friction between the shoe sole and the ground, and thus can test the wear resistance of the shoe sole.

[0026] Another prominent advantage of the present application is that the toe part of the simulation footform is made of flexible material, which has good bending characteristics and certain cushioning ability. When the driving mechanism drives the simulation footform and the measured shoe to step down, the toe part provides a cushioning effect on the driving mechanism and the measured shoe, thereby preventing damage to the driving mechanism and the measured shoe, improving the service life of the test device and the test accuracy of the measured shoe.

[0027] 2. In the present application, the angle between the length direction of the simulation footform and the tread surface is 0-80°. The angle between the length direction of the simulation footform and the tread surface is determined by factors such as the human activity state (walking or running, etc.), the size and style design of the measured shoe, etc. For example, the angle between the length direction of the simulation footform and the tread surface corresponding to the simulation of human walking is smaller than the angle between the length direction of the simulation footform and the tread surface corresponding to the simulation of human running; the angle between the length direction of the simulation footform and the tread surface corresponding to a smaller size of the measured shoe is smaller than the angle between the length direction of the simulation footform and the tread surface corresponding to a larger size of the measured shoe; the angle between the length direction of the simulation footform and the tread surface corresponding to a shoe with a more curved toe part is smaller than the angle between the length direction of the simulation footform and the tread surface corresponding to a shoe with a less curved toe part.

[0028] 3. In the present application, the angle adjusting structure is provided so that the angle between the simulation footform and the tread surface is adjustable, thereby enabling the test of the fatigue resistance of the measured shoe with different functions, sizes or styles, and also ensuring that the test can be performed based on different bending degrees of the same measured shoe, so as to more comprehensively obtain the fatigue resistance characteristics of the shoe.

[0029] 4. In the present application, the simulation footform and the output end of the driving mechanism are detachably fixed, so that the simulation footform can be replaced according to the size of the measured shoe, thereby enabling the test of products with different sizes and different shoe types.

[0030] 5. In the present application, the simulation footform is supported by a silica gel piece and a metal retaining piece. The silica gel piece can be easily shaped to simulate the shape of the human foot and the state of human skin. The metal retaining piece can simulate the human foot skeleton and reliably connect with the driving mechanism without damaging the shape of the silica gel piece.

[0031] 6. In the application, the bottom surface of the foot body is provided with a groove corresponding to the metatarsophalangeal joint part of the human body. The groove defines the bending boundary of the simulation foot mold, thereby determining the bending position of the tested shoes and ensuring the accuracy of the test results.

[0032] 7. In the application, the width of the groove is 4.5-5.5mm, and the depth is 9-11mm, which can reliably define the bending boundary without affecting the fullness of the simulation foot mold.

[0033] 8. In the application, the surface hardness of the silica gel part is 17A-23A, which has good wear resistance and long service life.

[0034] 9. In the application, the driving mechanism includes a driving part and an angle adjusting structure. The driving part can be a screw stepper motor, a linear motor or a magnetic suspension motor, which is simple in structure and reliable in power supply function. The angle adjusting structure includes a fixed part and a rotating part. The fixed part forms a rotating disc fixedly connected with the driving end of the driving part. The rotating part can rotate and position relative to the rotating disc, thereby achieving the purpose of adjusting the angle of the simulation foot mold. The structure is simple and the cost is low.

[0035] 10. In the application, the controller is set to make the test equipment more automated.

[0036] 11. In the application, the pressure sensor is arranged corresponding to the tread surface and electrically connected with the controller. The controller is adapted to control the driving mechanism to operate based on the signal transmitted by the pressure sensor, so that the driving force of the driving mechanism driving the simulation foot mold and the tested shoes during testing can match the stepping force during the actual human activity, thereby further improving the accuracy of the test results.

[0037] 12. In the application, the simulation floor can be replaced, that is, the test equipment of the application can simulate different activity environments such as cement floor, ceramic tile floor or plastic floor, etc. Therefore, the tested shoes can be tested based on the real application scene, thereby improving the accuracy of the test.

[0038] 13. In the application, the cabinet is provided with a climate chamber. The climate chamber can control the temperature, humidity, wind power, ultraviolet rays and rain and fog formation degree through the controller, so that the tested shoes can also be tested based on different use environments, thereby further improving the accuracy of the test.

[0039] 14. In the application, the operation panel is set to facilitate the test personnel to control and monitor the test equipment.

[0040] 15. In the application, the test steps of the shoe simulation fitting test equipment are simple, and the operation personnel have low requirements, so that the labor cost can be controlled, and the test results are accurate and effective. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments, the drawings needed to be used are briefly introduced as follows:

[0042] Figure 1 Structure schematic diagram of the shoe simulation fitting test equipment in the closed state of the cabinet door according to the embodiment of the present application;

[0043] Figure 2 Structure schematic diagram of the shoe simulation fitting test equipment in the open state of the cabinet door according to the embodiment of the present application;

[0044] Figure 3 Structure schematic diagram of the angle adjusting structure, the simulation foot mold, the simulation floor and the pressure sensor in the shoe simulation fitting test equipment according to the embodiment of the present application Figure 1 ;

[0045] Figure 4 Structure schematic diagram of the angle adjusting structure, the simulation foot mold, the simulation floor and the pressure sensor in the shoe simulation fitting test equipment according to the embodiment of the present application Figure 2 ;

[0046] Figure 5 Structure schematic diagram of the simulation foot mold in the shoe simulation fitting test equipment according to the embodiment of the present application;

[0047] Figure 6 Structure schematic diagram of the simulation foot mold in the shoe simulation fitting test equipment according to the embodiment of the present application;

[0048] Figure 7 Structure schematic diagram of the simulation foot mold in the shoe simulation fitting test equipment according to the embodiment of the present application;

[0049] Figure 8 Structure schematic diagram of the simulation foot mold in the shoe simulation fitting test equipment according to the embodiment of the present application;

[0050] Figure 9 Structure schematic diagram of the simulation foot mold in the shoe simulation fitting test equipment according to the embodiment of the present application;

[0051] Main drawing mark explanation:

[0052] Main drawing mark explanation:

[0053] Driving mechanism 2; driving member 21; angle adjusting structure 22; fixing member 221; fixing plate 2211; mounting plate 2212; positioning hole 2212a; angle scale 2212b; rotating member 222; connecting frame 2221; stud 2221a; mounting frame 2222; first plate 2222a; second plate 2222b; connecting assembly 2222b;

[0054] Simulation foot mold 3; body part 30a; toe part 30b; silica gel member 31; ankle 311; foot body 312; groove 3121; metal retaining member 32; bottom plate 321; connecting column 322;

[0055] Pressure sensor 4. DETAILED DESCRIPTION

[0056] In the claims and specification, unless otherwise stated, the terms "first", "second", or "third" and the like, are used merely as identifiers to distinguish between different objects, and are not intended to be used to describe a particular sequential order.

[0057] In the claims and specification, unless otherwise stated, the terms "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "back", "left", "right", "clockwise", "counterclockwise", and the like, indicate the orientation or positional relationship shown in the drawings, and are merely used to simplify the description, and do not imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation.

[0058] In the claims and specification, unless otherwise stated, the term "fixedly connected" or "fixed connection" should be interpreted broadly, that is, any connection mode between the two without displacement relationship and relative rotation relationship, that is, including non-detachable fixed connection, detachable fixed connection, integration, and fixed connection through other devices or elements.

[0059] In the claims and specification, unless otherwise stated, the terms "include", "have" and their variants mean "include but not limited to".

[0060] The technical solutions in the embodiments will be described clearly and completely below with reference to the drawings.

[0061] Referring to Figures 1 to 9 , Figures 1 to 9 A shoe simulation fitting test device of the present embodiment is shown. As Figures 1 to 9 shown, the shoe fatigue test provided by the present embodiment includes a body 1, a driving mechanism 2, a simulation foot mold 3, a controller (not shown in the figure) and a pressure sensor 4.

[0062] The body 1 is provided with a tread surface 121, a climate chamber 111 and an operation panel 112.

[0063] Specifically, as shown in Figure 1 and Figure 2 , the body 1 comprises a cabinet 11 and a simulated floor 12.

[0064] The top of the cabinet 11 is used for mounting the driving mechanism 2, the controller and the circuit, etc., and the front side of the top of the cabinet 11 is further provided with an operation panel 112; the operation panel 112 is electrically connected with the controller, which is used for displaying the working state of the test equipment and providing a man-machine interaction interface to realize the control of the controller and the monitoring of the component parameters in the test process. The bottom of the cabinet 11 is provided with the climate chamber 111, and the front side of the climate chamber 111 is provided with a cabinet door 1111 which can be opened or sealed closed to facilitate the operation personnel to operate the inside of the climate chamber 111.

[0065] The simulated floor 12 is detachably fixed with the cabinet 11, and the board surface constitutes the tread surface 121, which constitutes an interface for simulating the ground for testing the shoes to be tested. Specifically, as shown in Figure 2 , the simulated floor 12 is installed on the bottom surface of the climate chamber 111, and the upper surface is horizontally arranged and constitutes the tread surface 121; in this embodiment, the simulated floor 12 is suitable for being replaced according to the test requirements to obtain the tread surface 121 with different surface characteristics, specifically, by replacing the floor to obtain the tread surface 121 for simulating the cement ground, the ceramic tile ground or the plastic ground, etc., so that the shoe simulation test equipment provided by this embodiment can simulate different activity environments, so as to facilitate the fatigue test of the shoes to be tested based on the real application scene, and ensure the accuracy of the test results. In addition, in this embodiment, in order to ensure that the shoe simulation test equipment can simulate the real environment when the shoes are used, the climate chamber 111 is also provided with a temperature regulator, a humidity regulator, a wind generator, an ultraviolet light generator and a rain and fog generator, which are electrically connected with the controller; the controller is suitable for controlling the temperature regulator, the humidity regulator, the wind generator, the ultraviolet light generator and the rain and fog generator to operate according to the preset values, specifically, the user can control the temperature regulator, the humidity regulator, the wind generator, the ultraviolet light generator and the rain and fog generator through the controller at different time periods of the whole test, so as to make the climate in the climate chamber 111 be the climate of different seasons, and the climate of windy, rainy or foggy days, etc., so as to ensure that the fatigue test of the shoes is more consistent with the actual application environment, and ensure the accuracy of the test results; specifically, in this embodiment, the temperature regulation range in the climate chamber 111 can be -50℃ to 50℃, the relative humidity regulation range is 5% to 95%, the wind speed regulation range is 0-11m / s; the intensity of solar radiation is 0-1000W / m2 The time of solar radiation is 7-8h, and the degree of rainfall is 2-4 inches / h. Preferably, the air outlet of the wind generator in the climate chamber 111 can be set to face the toe of the shoe due to the fact that the wind is always blowing in the face during activities such as walking or running.

[0066] The driving mechanism 2 is installed on the body 1 and has an output end adapted to reciprocate in a first direction; the first direction is perpendicular to the tread surface 121, and in this embodiment, the first direction is vertical because the tread surface 121 is horizontally arranged.

[0067] As shown in Figures 2 to 4 , the driving mechanism 2 includes a driving member 21 and an angle adjusting structure 22. The driving member 21 is used to output reciprocating motion in the first direction, and can adopt one of a screw stepper motor, a linear motor, and a magnetic levitation motor. In addition, the driving member 21 can also be other linkage slider mechanisms and other mechanisms that can realize linear motion output. Specifically, the driving member 21 is installed on the top of the body 1 and has a driving end adapted to reciprocate in the first direction, which extends into the climate chamber 111 and faces the tread surface 121.

[0068] The angle adjusting structure 22 is installed on the driving end of the driving member 21 and is used for mounting the artificial foot model 3, which is adapted to adjust the angle through the angle adjusting structure 22 to change the included angle between the length direction and the tread surface 121.

[0069] Specifically, the angle adjusting structure 22 constitutes the output end of the driving mechanism 2, which includes a fixed member 221 and a rotating member 222.

[0070] The fixed member 221 is fixedly connected with the driving end of the driving member 21 and is provided with a pivot (not shown in the figure) perpendicular to the first direction and a positioning hole 2212a arranged around the pivot. As shown in Figure 3 and Figure 4 , the fixed member 221 includes a fixed plate 2211 and a mounting plate 2212 connected as one. The fixed plate 2211 is horizontally arranged and is fixedly connected with the driving end of the driving member 21 by screws or other screwing members. The number of mounting plates 2212 is two, and the two mounting plates 2212 are fixedly connected to the bottom surface of the fixed plate 2211 in parallel and at intervals, and a pivot is formed between them, and both are provided with a through circular arc-shaped positioning hole 2212a, and both positioning holes 2212a have the pivot as the center axis. In order to facilitate identification, any one mounting plate 2212 is provided with an angle scale 2212b on the side away from the other mounting plate 2212, which is arranged in the hole along of the positioning hole 2212a, and is used to help the operator to identify the angle of the different positions of the positioning hole 2212a relative to the vertical direction or the horizontal direction.

[0071] One end of the rotating member 222 is fixed to the tread 121 for the artificial foot model 3, and the other end is pivotally connected and provided with a positioning part for cooperating with the positioning hole 2212a; the positioning part is suitable for fixing at different positions in the positioning hole 2212a.

[0072] Specifically, as shown in Figure 3 and Figure 4 The rotating member 222 includes a connecting frame 2221 and a mounting frame 2222. The connecting frame 2221 is generally Z-shaped, including a top arm, a bottom arm and a connecting arm, the top arm and the bottom arm are parallel to each other, and the connecting arm is vertically connected between the top arm and the bottom arm. The top arm is inclined downward, the side opposite to the connecting arm on the top arm is pivotally connected with the pivot, and two studs 2221a are screwed on the two sides adjacent to the connecting arm on the top arm, the two studs 2221a constitute the positioning part, the two studs 2221a are rotationally positioned with the positioning hole 2212a, have a pointer pointing to the angle scale 2212b, and can lock the two mounting plates 2212 and the top arm when the two are adjusted in position in the positioning hole 2212a.

[0073] The mounting frame 2222 is fixed to the upward face of the bottom arm and includes a first plate 2222a, a second plate 2222b and two connecting assemblies 2222c. The first plate 2222a and the second plate 2222b are parallel to the bottom arm and are arranged vertically. The second plate 2222b is fixed to the bottom arm by screws. The two connecting assemblies 2222c are composed of bolts and nuts, and are vertically connected to the two ends of the first plate 2222a and the second plate 2222b, respectively. The first plate 2222a and the second plate 2222b are cooperated for clamping and fixing the artificial foot model 3, and the distance between them is suitable for adjusting based on the size of the artificial foot model 3.

[0074] In this embodiment, the fixed member 221 constitutes a rotating disc fixed to the driving end of the driving member 21, and the rotating member 222 can rotate and position relative to the rotating disc, so as to achieve the purpose of adjusting the angle of the artificial foot model 3, which is simple in structure, easy to operate and low in manufacturing cost.

[0075] The simulated foot mold 3 is used to fit the shoe under test to complete the fatigue test of the shoe. The shape of the simulated foot mold 3 matches the shape of the human foot. It is fixed to the output end of the drive mechanism 2 and the sole side faces the stepping surface 121. It is suitable for being driven by the drive mechanism 2 to step on or move away from the stepping surface 121. The length direction of the simulated foot mold 3 is inclined relative to the stepping surface 121 and its toes face the stepping surface 121. The simulated foot mold 3 has a body part 30a and a toe part 30b connected in sequence along its length direction. The body part 30a corresponds to the part of the human foot from the heel to the metatarsophalangeal joint and has bending resistance. The toe part 30b is made of flexible material and corresponds to the toe part 30b of the human foot. It is suitable for stepping on the stepping surface 121 and bending relative to the body part 30a.

[0076] Specifically, such as Figures 5 to 9 As shown, the simulated foot model 3 includes a silicone part 31 and a metal retainer 32. The silicone part 31 is shaped to match the human foot and includes an ankle 311 and a foot body 312 that are integrated together. The metal retainer 32 includes a base plate 321 and a connecting post 322. The base plate 321 is enclosed within the foot body 312 and extends from the heel of the foot body 312 to correspond to the metatarsophalangeal joint of the human foot. When the foot body 312 is supported on the ground, it is parallel to the ground. The front end of the base plate 321 is a beveled edge that gradually slopes backward from the inside of the foot body 312 toward the outside of the foot body 312 to match the distribution direction of the metatarsophalangeal joint of the human foot. It should be understood that the front and rear directions referred to in this embodiment are specifically based on the direction of the simulated foot model 3. The side in which the toes of the simulated foot model 3 point is the front, and the side in which the heel points is the rear. One end of the connecting post 322 is fixedly connected to the base plate 321, which can be achieved by integral molding or screw connection. The other end of the connecting post 322 extends out of the top of the ankle 311 and is fixedly connected to the output end of the drive mechanism 2. The portion of the silicone part 31 located at the front end of the base plate 321 constitutes the toe part 30b, and the remaining portion, together with the metal retainer 32, constitutes the body part 30a. The simulated foot mold 3 is supported by the silicone part 31 and the metal retainer 32. The silicone part 31 can be easily molded and simulates the shape of the human foot and the condition of human skin. The metal retainer 32 can not only simulate the bones of the human foot, but also reliably connect to the drive mechanism 2 and ensure that the shape of the silicone part 31 is not damaged. Preferably, in this embodiment, the surface hardness of the silicone part 31 is 17A-23A, which has good wear resistance, thereby helping to ensure service life.

[0077] The specific way of fixing the simulation foot mold 3 to the output end of the driving mechanism 2 is that the heel and ankle 311 of the simulation foot mold 3 are arranged between the first plate 2222a and the second plate 2222b. Specifically, the bottom surface of the heel of the foot body 312 is in abutment with the second plate 2222b, and the top end of the connecting column 322 is in abutment with the first plate 2222a. After abutment, the connecting column 322 and the first plate 2222a are fixed by bolts, that is, the installation of the simulation foot mold 3 is completed. The installation method is relatively simple and easy to operate. As shown in Figure 4 The second plate 2222b always extends in an inclined manner in the embodiment, so that after the simulation foot mold 3 is installed in place, the length direction of the simulation foot mold 3 forms an angle with the tread surface 121, and the toe of the simulation foot mold 3 points to the tread surface 121. In this way, when the simulation foot mold 3 steps on the tread surface 121, the toe 30b of the simulation foot mold 3 will inevitably contact the tread surface 121 first and bend relative to the body part 30a. Since the body part 30a has bending resistance, the body part 30a always extends in an inclined downward manner along the length direction, thereby achieving the purpose of simulating the bending state of the human foot during walking or running. Moreover, based on the installation method of the simulation foot mold 3 on the mounting frame 2222, it can be seen that the connection between the simulation foot mold 3 and the output end of the driving mechanism 2 is a detachable fixed connection, so that the simulation foot mold 3 can be easily replaced according to actual needs. Therefore, in the embodiment, the simulation foot mold 3 is suitable for being replaced according to the size and type of the shoes to be tested, so as to satisfy the fatigue test of different sizes and types of shoes.

[0078] In this embodiment, the shape of the simulation foot mold 3 matches the shape of the human foot, and the shape is full, so it can reliably simulate the situation of the shoe being squeezed due to bending during walking or running, so as to effectively identify the durability of the shoe material. In the simulation foot mold 3, the body part 30a has good bending resistance, which simulates the characteristics that the heel part to the metatarsophalangeal joint part of the human foot has support such as tarsal bones and metatarsal bones and cannot be bent. The toe part 30b is made of flexible material, which is connected to the front end of the body part 30a and can bend relative to the body part 30a, which is used to simulate the toe part 30b in front of the metatarsophalangeal joint of the human foot. When it is necessary to test the fatigue characteristics of the shoe, the simulation foot mold 3 is provided with socks and the shoe to be tested, and the driving mechanism 2 is started. The simulation foot mold 3 and the shoe are continuously switched between the states of stepping on the tread surface 121 and moving away from the tread surface 121 by the driving mechanism 2, so as to realize the test. The structure of the test equipment is simple, the cost is low, the occupied space is small, and since only the driving mechanism 2 needs to be controlled to reciprocate in a single direction, the test efficiency is extremely high, which can greatly shorten the test period of the fatigue of new products and ensure the product market time. Specifically, the test principle of the shoe simulation fitting test equipment is that when the simulation foot mold 3 and the shoe to be tested move towards the tread surface 121, since the length direction of the simulation foot mold 3 is inclined relative to the tread surface 121 and the toe tip thereof faces the tread surface 121, the part of the shoe to be tested corresponding to the toe part 30b of the simulation foot mold 3 first contacts the tread surface 121 and gradually bends relative to the part thereof for corresponding the body part 30a, so as to realize the simulation of the bending of the shoe when the heel of the real person is lifted and pedaled relative to the ground during walking or running, and the stress conditions (bending, compression, stretching and extrusion stress conditions) of each position of the upper of the shoe. Since the most significant stress phenomenon of the shoe occurs when the heel of the real person is lifted and the toe part 30b of the foot is pedaled during walking or running, that is, when the human foot is bent, the stress condition of the shoe is the most significant, therefore, in the test equipment of the present application, the simulation foot mold 3 is arranged in a toe-down shape to directly form the posture of the toe part 30b pedaling and the body part 30a heel lifting during stepping, which is enough to achieve the simulation effect and meet the fatigue test requirements of the shoe to be tested due to bending.

[0079] During the movement of the toe part 30b of the simulation foot mold 3 towards the tread surface 121, the toe part 30b will form a forward sliding relative to the tread surface 121. During the sliding process, the displacement and friction degree formed by the shoe to be tested relative to the tread surface 121 are similar to the displacement and friction degree formed by the real person relative to the ground when the front foot is pedaled and then lifted, so the test equipment provided by the present application can also simulate the friction between the shoe sole and the ground, and thus can test the wear resistance of the shoe sole of the shoe to be tested.

[0080] In addition, another prominent advantage of the embodiment is that since the toe part 30b of the simulation foot mold 3 is made of a flexible material, it has good bending characteristics and certain buffering capacity, so that when the driving mechanism 2 drives the simulation foot mold 3 and the shoe to be tested to step down, the toe part 30b can buffer the driving mechanism 2 and the shoe to be tested, thereby preventing the driving mechanism 2 and the shoe to be tested from being damaged, improving the service life of the test equipment and the test accuracy of the shoe to be tested.

[0081] In the embodiment, the angle between the length direction of the simulation foot mold 3 and the tread surface 121 is 0-80°, which is determined by factors such as the human activity state (walking or running, etc.), the size and style design of the shoe to be tested, etc. For example, the angle between the length direction of the simulation foot mold 3 and the tread surface 121 corresponding to the simulation of human walking is smaller than the angle between the length direction of the simulation foot mold 3 and the tread surface 121 corresponding to the simulation of human running; the angle between the length direction of the simulation foot mold 3 and the tread surface 121 corresponding to the shoe to be tested with a smaller size is smaller than the angle between the length direction of the simulation foot mold 3 and the tread surface 121 corresponding to the shoe to be tested with a larger size; the angle between the length direction of the simulation foot mold 3 and the tread surface 121 corresponding to the shoe to be tested with a more curved toe part is smaller than the angle between the length direction of the simulation foot mold 3 and the tread surface 121 corresponding to the shoe to be tested with a less curved toe part. Since the simulation foot mold 3 can be conveniently adjusted in angle by the angle adjusting structure 22 in the embodiment, the fatigue test equipment provided by the embodiment can test the fatigue resistance of shoes to be tested with different functions, sizes or styles, and can also test different bending degrees based on the same shoe to be tested, so as to more comprehensively obtain the fatigue resistance characteristics of the shoe.

[0082] Preferably, in the embodiment, the sole body 312 is provided with a linear groove 3121 corresponding to the bottom surface of the metatarsophalangeal joint of the human body; the groove 3121 extends obliquely relative to the width direction of the sole body 312, the distance between the middle line of the groove 3121 on the lateral side of the sole body 312 and the heel of the sole body 312 is 62-64% of the total length of the sole body 312, and the distance between the middle line of the groove 3121 on the medial side of the sole body 312 and the heel of the sole body 312 is 71-73% of the total length of the sole body 312; the middle line of the groove 3121 herein refers to a line that is centered in the groove width direction of the groove 3121; the groove 3121 under this design has a distance between the middle line on the medial side of the sole body 312 and the heel of the sole body 312 that is greater than the distance between the middle line on the lateral side of the sole body 312 and the heel of the sole body 312, so the groove 3121 gradually inclines backward from the medial side of the sole body 312 to the lateral side of the sole body 312, which simulates the distribution direction of the metatarsophalangeal joint of the human foot, thereby positioning the bending boundary of the simulation shoe 3 to clearly define the bending position of the tested shoe and ensure the accuracy of the test results. The width of the groove 3121 is 4.5-5.5mm, and the depth is 9-11mm, which ensures that the bending boundary can be reliably defined without affecting the fullness of the simulation shoe 3.

[0083] More preferably, the shoe simulation fitting test equipment is provided with at least two driving mechanisms 2, and correspondingly, the number of simulation shoes 3 is also set to at least two, so as to ensure that the shoe simulation fitting test equipment can simultaneously accommodate multiple shoes for testing, ensure the accuracy of the test results, and improve the test efficiency.

[0084] The controller is installed on the machine body 1 and electrically connected with the driving mechanism 2 for controlling the driving mechanism 2 to operate at a preset speed and a preset stroke; the controller is set to make the test equipment more automated.

[0085] The pressure sensor 4 is arranged corresponding to the tread surface 121 and electrically connected with the controller for detecting the force value when the tread surface 121 is stepped on by the simulation shoe 3; the controller is adapted to control the movement range of the driving mechanism 2 in the first direction based on the force value detected by the pressure sensor 4, so that the force value detected by the pressure sensor 4 reaches a preset pressure value, so as to ensure that the force of the driving mechanism 2 driving the simulation shoe 3 and the tested shoe to step down can match the stepping force of the real person when moving, and further improve the accuracy of the test results. Specifically, as Figure 4As shown, the pressure sensor 4 is arranged below the simulation bottom plate 321. In actual application, the controller can preset the force value according to the use characteristics of the shoes to be tested. For example, if the shoes to be tested are sports shoes, the preset force value should be relatively large; if the shoes to be tested are casual shoes, the preset force value should be relatively small; if the shoes to be tested are for adults, the preset force value should be relatively large; if the shoes to be tested are for children, the preset force value should be relatively small, and so on.

[0086] The shoe simulation test equipment provided in the embodiment is used to perform the following steps in the shoe fatigue test:

[0087] The cabinet door 1111 is opened, the simulation foot mold 3 with the size matching the size of the shoes to be tested is selected and placed between the first plate 2222a and the second plate 2222b, and then the screw is locked to connect the column 322 and the first plate 2222a, so as to install the simulation foot mold 3 on the output end of the driving mechanism 2. The simulation foot mold 3 is sleeved with a sock, which can be any sock product with a size matching the simulation foot mold 3 and used in daily life, and the shoes to be tested are sleeved outside the simulation foot mold 3 with the sock.

[0088] The positioning part is loosened, and the angle of the rotating part 222 relative to the fixed part 221 is adjusted, so that the included angle between the simulation foot mold 3 and the shoes to be tested and the tread surface 121 is adjusted to a suitable position.

[0089] The operation panel 112 is controlled to set parameters of the controller, including the displacement amount, the movement speed of the driving part 21, the force value of the pressure sensor 4, and the corresponding parameters of the temperature regulator, the humidity regulator, the wind generator, the ultraviolet ray generator, and the rain and fog generator, so as to ensure that the bending state and the tread force of the shoes to be tested when contacting the tread surface 121 are close to the bending state and the tread force generated by the human body when wearing the shoes to walk or run, and to ensure that the environment of the climate chamber 111 can simulate the use environment of the shoes to be tested.

[0090] The driving mechanism 2 is started to drive the shoes to be tested to tread or move away from the tread surface 121 in the first direction.

[0091] The driving mechanism 2 is completed, the shoes to be tested are taken off, and the appearance of the shoes to be tested (such as the bending, pulling, and wearing of the upper surface) is observed and recorded.

[0092] The shoe fatigue test steps provided in the embodiment using the shoe simulation test equipment are simple, the requirement for the operation personnel is not high, the labor cost can be controlled, and the test result is accurate and effective.

[0093] The above description and embodiment are used to explain the protection scope of the present application, but do not limit the protection scope of the present application.

Claims

1. A shoe simulation fitting test device, comprising: a body provided with a tread surface; a driving mechanism mounted on the body and having an output end adapted to reciprocate in a first direction; the first direction being perpendicular to the tread surface; a simulation foot model matching the shape of a human foot, being fixed to the output end of the driving mechanism with the sole side facing the tread surface, and being adapted to be driven by the driving mechanism to tread on or away from the tread surface; the simulation foot model being inclined relative to the tread surface along its length direction with the toe tip facing the tread surface; the simulation foot model being provided with a body portion and a toe portion successively connected along its length direction; the body portion corresponding to the part of a human foot from the heel to the metatarsophalangeal joint and having bending resistance; the toe portion being made of flexible material and corresponding to the toe part of a human foot, and being adapted to tread on the tread surface and bend relative to the body portion; the simulation foot model comprising a metal holder and a silica gel part; the silica gel part matching the shape of a human foot and comprising an ankle and a foot body connected as one; the foot body being provided with a linear groove on the bottom surface corresponding to the metatarsophalangeal joint part; the groove being inclined relative to the width direction of the foot body and extending, the distance between the midpoint of the groove and the heel of the foot body being 62-64% of the total length of the foot body, and the distance between the midpoint of the groove and the inside of the foot body being 71-73% of the total length of the foot body. The angle between the length direction of the simulation foot model and the tread surface is 0-80°. The driving mechanism is provided with an angle adjusting structure; the simulation foot model is adapted to adjust the angle and change the angle between the length direction and the tread surface through the angle adjusting structure. The simulation foot model is detachably fixed to the output end of the driving mechanism, and is adapted to be replaced according to the size and type of the shoe to be tested. The metal holder comprises a bottom plate and a connecting column; the bottom plate is covered in the foot body and extends from the heel part of the foot body to the metatarsophalangeal joint part of the foot body; one end of the connecting column is fixed to the bottom plate and the other end extends out of the top end of the ankle and is fixed to the output end of the driving mechanism; the part of the silica gel part in front of the bottom plate constitutes the toe portion, and the remaining part constitutes the body portion together with the metal holder.

2. A shoe simulation fitting test apparatus as claimed in claim 1, wherein, The width of the groove is 4.5-5.5 mm, and the depth is 9-11 mm.

3. A shoe simulation fitting test apparatus as claimed in claim 2, wherein, The surface hardness of the silica gel part is 17A-23A.

4. The shoe simulation fitting test apparatus of claim 1 wherein, ​ 5. A shoe simulation fitting test apparatus as claimed in any one of claims 1 to 4, wherein, ​ 6. A shoe simulation fitting test apparatus as claimed in claim 5, wherein, ​ 7. A shoe simulation fitting test apparatus as claimed in claim 5, wherein, ​ 8. A shoe simulation fitting test apparatus as claimed in claim 3, wherein, The driving mechanism comprises a driving member and the angle adjusting structure; the driving member is installed on the machine body and has a driving end adapted to reciprocate along the first direction; the angle adjusting structure constitutes an output end of the driving mechanism and comprises a fixing member and a rotating member; the fixing member is fixedly connected with the driving end of the driving member and is provided with a pivot perpendicular to the first direction and a circular arc-shaped positioning hole arranged around the pivot; one end of the rotating member faces the tread surface and is adapted to be fixedly connected with the artificial foot model, and the other end thereof is rotatably connected with the pivot and is provided with a positioning part adapted to be inserted into the positioning hole; the positioning part is adapted to be fixed at different positions in the positioning hole.

9. A shoe simulation fitting test apparatus as claimed in claim 8, wherein, The driving member is a screw stepper motor, a linear motor or a magnetic levitation motor.

10. The shoe simulation fitting test apparatus of claim 1 wherein, The machine body is further provided with a controller electrically connected with the driving mechanism to control the driving mechanism to operate at a preset speed and a preset stroke.

11. A shoe simulation fitting test apparatus as claimed in claim 10, wherein, The machine body is further provided with a pressure sensor arranged corresponding to the tread surface and electrically connected with the controller to detect the force value when the tread surface is stepped on by the artificial foot model; the controller is adapted to control the movement range of the driving mechanism along the first direction based on the force value detected by the pressure sensor so that the force detected by the pressure sensor reaches a preset pressure value.

12. A shoe simulation fitting test apparatus as claimed in claim 11, wherein, The machine body comprises a cabinet and an artificial floor; the artificial floor is detachably fixedly connected with the cabinet and has a surface constituting the tread surface; the artificial floor is adapted to be replaced according to test requirements to obtain the tread surface with different surface characteristics; the pressure sensor is arranged below the artificial floor.

13. A shoe simulation fitting test apparatus as claimed in claim 12, wherein, The cabinet is provided with a climate chamber; the climate chamber is provided with a temperature regulator, a humidity regulator, a wind generator, an ultraviolet light generator and a rain and mist generator; the output end of the driving mechanism, the artificial foot model and the artificial floor are located in the climate chamber; The controller is further adapted to control the temperature regulator, the humidity regulator, the wind generator, the ultraviolet light generator and the rain and mist generator to operate according to preset values, respectively.

14. A shoe simulation fitting test apparatus as claimed in claim 11, wherein, The machine body is further provided with an operation panel electrically connected with the controller.

15. A method of conducting a shoe fatigue test using the shoe simulation fitting test apparatus according to any one of claims 1 to 14, characterized by, The method comprises the following steps: Step 1: selecting an artificial foot model with a size matching the size of the shoe to be tested and installing the artificial foot model on the output end of the driving mechanism; Step 2: turning on the driving mechanism to drive the shoe to be tested to step on or move away from the tread surface along the first direction; Step 3: after the driving mechanism completes operation, taking off the shoe to be tested, observing the appearance of the shoe to be tested and recording. ​

Images