Shoe inner cavity pressure testing device
By using a combination of a foot mold made of soft material and a pressure sensor, the individual variability and subjectivity issues in shoe cavity pressure testing in existing technologies are solved, enabling accurate measurement and quantification of shoe cavity pressure, thus improving testing accuracy and efficiency.
Patent Information
- Application Number
- CN202423234950.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2034-12-26
AI Technical Summary
In existing technologies, shoe cavity pressure testing relies on the subjective feelings and experience of testers, which results in individual differences and strong subjectivity, and makes it impossible to quantify pressure distribution, leading to poor test accuracy and consistency.
The foot mold is made of soft, elastic material and has an internal air chamber and pressure sensor. The inflation module controls the expansion of the foot mold to fit the inner wall of the shoe, and the pressure value at each position is detected in real time. The pressure data is analyzed by a computer system.
It enables precise measurement and quantification of pressure within the shoe cavity, objectively assesses shoe fit and comfort, improves testing accuracy and consistency, and assists in design improvements.
Smart Images
Figure CN223845076U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of footwear testing technology, especially to a shoe inner cavity pressure testing device. BACKGROUND
[0002] The shoe inner cavity pressure distribution reflects the pressure distribution of the inside of the shoe on the wearer's foot, and such pressure distribution is closely related to the wearing comfort of the shoe, directly affecting the wearing experience and foot health of the wearer. At present, in the shoemaking industry, the shoe inner cavity pressure and its distribution of sample shoes are mainly tested by relying on the wearing experience of the test wearers, and then the wearing comfort is judged.
[0003] The test wearers are generally selected by the technical department, and their foot types need to meet the standard shoe size. After the test wearers are initially selected, the length, thickness, toe-metatarsal joint circumference and other parameters of the test wearers' feet need to be measured, and the master shoemaker needs to make a judgment based on personal experience to ensure that the foot type of the selected test wearer is as close as possible to the standard foot type.
[0004] After the test wearers are determined, the test wearers need to wear sample shoes, and according to the wearing experience, they need to point out where the discomfort of the upper exists, whether there is a situation that the upper compresses the instep, the toes and other parts. According to the feedback of the test wearers, the sample shoes are improved, and after the improvement, the test wearers are tested again and feedback, until there is no discomfort, and then the sample shoes are determined to be qualified, and then the whole set of shoe size production is carried out. In order to ensure comprehensive evaluation, three test wearers usually participate in the test at the same time during the test, and all test wearers need to indicate that there is no discomfort when wearing the sample shoes to determine that the sample shoes are qualified.
[0005] This method can provide the most direct feeling and feedback, and can truly simulate the situation in the actual use scene such as walking and jumping, but there are still many problems affecting the test accuracy. For example, there are the following problems:
[0006] 1. Individual difference: the foot types, sensitivity and tolerance of different test wearers are different, and the test wearers have no discomfort, which does not mean that there is no problem, and the feeling of the test wearers cannot completely represent the real experience of the general consumers. It is also difficult to cover all possible foot types to test the wearing comfort by selecting three test wearers to wear at the same time. Moreover, the test wearers have a certain loss, and different test results may occur when the test wearers are replaced.
[0007] 2. Strong subjectivity: the test wearers mainly rely on past experience to judge the comfort of the sample shoes, and their judgment is largely dependent on personal feelings, and lacks objective data support.
[0008] 3. Unable to quantify specific pressure: only the approximate discomfort area can be perceived during fitting, such as the instep and toes, but the pressure values at each position in the shoe cavity cannot be accurately measured, the specific pressure and its distribution cannot be quantified, and it is difficult to accurately determine whether the pressure distribution is uniform and reasonable. Only rely on the experience of technical personnel to improve. Utility model content
[0009] The utility model discloses a shoe cavity pressure testing device to test the pressure value of each position of the shoe inner wall to the foot mold, and further judge the shoe fitting and wearing comfort.
[0010] In order to realize the above-mentioned purpose, the utility model adopts the technical scheme as follows:
[0011] A shoe cavity pressure testing device, comprising:
[0012] The foot mold is made of soft elastic material, and the foot mold has an air cavity, which is filled with gas and closed, so that the foot mold is inflated to contact the shoe inner wall and generate pressure.
[0013] The pressure testing module includes a pressure sensor, which is arranged at multiple positions on the outer surface of the foot mold to detect the pressure value of the foot mold in real time.
[0014] Further, the foot mold has a gas port communicating with the air cavity, and the gas port is provided with a sealing element capable of closing the gas port.
[0015] Further, it further includes an inflation module, which is used to inflate the air cavity of the foot mold; the inflation module includes a gas pump, an air pipe, a switch valve and a pressure gauge, one end of the air pipe is in closed communication with the air cavity, and the other end is connected to the gas pump through the switch valve and the pressure gauge.
[0016] Further, the inflation module further includes a control system, the pressure sensor feeds back an electric signal to the control system, the control system receives the signal and controls the on / off of the switch valve and the working process of the gas pump to realize automatic inflation.
[0017] Further, the pressure sensor is a flexible film pressure sensor or a point pressure sensor.
[0018] Further, the pressure sensor is bonded on the foot mold by glue, and the pressure sensing surface of the pressure sensor is arranged away from the foot mold.
[0019] Further, the pressure testing module further includes a charging data line, which is electrically connected to the pressure sensor and is used to transmit the electric signal of the pressure sensor to an external computer system.
[0020] Preferably, the foot mold is made of rubber or silicone material.
[0021] Further, the wall thickness T1 at the instep of the foot mold is less than the wall thickness T2 at other positions of the foot mold, and the wall thickness T1 and the wall thickness T2 are the distances between the inner wall of the air cavity and the outer surface of the foot mold.
[0022] Preferably, the wall thickness T1 is 1-2mm, and the wall thickness T2 is 2-5mm.
[0023] The utility model has the following beneficial effects:
[0024] 1. The shoe cavity pressure is tested by using the simulated foot mold. During the test, the foot mold needs to be placed in the shoe to be tested. After the foot mold is placed, the contact with the insole is pressed by the shoe. At this time, the pressure value at the corresponding position can be measured by the pressure sensor fixed on the outer surface of the foot mold. By analyzing the collected pressure values at different positions, the shoe cavity pressure condition can be obtained, which can assist the tester to objectively judge the fit and wearing comfort of the shoe, and the test results can be quantified.
[0025] 2. The foot mold is made of soft elastic material, and an air cavity is arranged in the foot mold. When testing the shoe cavity pressure, the air cavity can be inflated to make the foot mold swell and slightly deform to tightly fit the shoe cavity, so as to effectively avoid the gap and bubbles between the foot mold and the shoe cavity, which can affect the measurement accuracy.
[0026] 3. The air cavity in the foot mold is sealed and communicated by the inflation module. During the test, the air cavity can be inflated to control the swelling of the foot mold. The swelling degree is adjustable and controllable. After the test is completed, the air cavity can be deflated to take out the foot mold. BRIEF DESCRIPTION OF DRAWINGS
[0027] Figure 1 It is a structural schematic view (one) of the utility model.
[0028] Figure 2 It is a structural schematic view (two) of the utility model.
[0029] Figure 3 It is a structural schematic view (three) of the utility model.
[0030] Figure 4 It is a structural schematic view (three) of the utility model.
[0031] Main component symbol explanation: 1, foot mold; 11, air cavity; 12, air port; 2, pressure testing module; 21, pressure sensor; 22, charging data line; 23, computer system; 3, inflation module; 31, air pump; 32, air pipe; 33, on-off valve; 34, pressure gauge. DETAILED DESCRIPTION
[0032] The utility model discloses make further explanation to the utility model below combining with the drawing and specific embodiment.
[0033] Embodiment one
[0034] As Figures 1-3 The utility model discloses a shoe inner cavity pressure distribution testing arrangement, include: the simulation foot mould 1, the foot mould 1 adopts the soft elastic material of airtightness and is made, and the foot mould 1 inside is provided with the air cavity 11, the air cavity 11 inside fills with a certain amount of gas, and the closed setting makes the foot mould 1 inflation to be with the pressure that can be produced with the shoe inner wall of measuring shoe, pressure measuring module 2, pressure measuring module 2 includes pressure sensor 21, and pressure sensor 21 fixedly arranged on the multiple position of foot mould 1 outer surface is to real -time detection the pressure value that foot mould 1 suffered.
[0035] According to the test demand, the foot mould 1 can be made into the foot shape of standard shoe size through mould injection, blow moulding and other processes, to test the shoes of corresponding shoe size. The pressure sensor 21 can be distributed on the upper side of the metatarsophalangeal joint of the foot mould 1, the front end of the thumb, the inner side of the first metatarsophalangeal joint, the outer side of the fifth metatarsophalangeal joint and other positions.
[0036] During testing, the foot mould 1 is placed in the shoes to be tested, and the outer surface of the foot mould 1 and the pressure sensor 21 thereon can contact the inner wall of the shoes to be tested to generate pressure. At this time, the pressure values at the corresponding positions can be measured by the pressure sensor 21 arranged on the outer surface of the foot mould 1. According to the pressure values collected at different positions, the pressure distribution of the inner cavity of the shoes can be obtained. Since the foot mould 1 is in an inflated state during testing, the outer surface of the foot mould 1 has a high degree of fit with the inner cavity of the shoes, which can effectively avoid gaps and bubbles between the foot mould 1 and the inner cavity of the shoes, and the measured pressure value data is more accurate.
[0037] According to the measured pressure distribution of the inner cavity of the shoes, in combination with the pre-determined pressure comfort threshold, the fit and wearing comfort of the shoes can be objectively judged. For example, if the pressure values of individual parts of the inner cavity of the shoes are significantly large or small, it means that there is something abnormal at that part, and the pressure that is too large means that there may be foreign matter or a tight condition at that part, and the pressure that is too small indicates that the part is too loose and has poor wrapping, which can easily cause injury, and all need to be improved and handled. The so-called "pressure comfort threshold" refers to the pressure threshold that can cause discomfort in different parts of the foot.
[0038] In this embodiment, the foot mould 1 is provided with a gas port 12 communicating with the air cavity 11, and a sealing element (not shown in the figure) is arranged at the gas port 12. The gas port can be closed by the sealing element to keep the air pressure of the air cavity 11 constant, so as to maintain the inflated state of the foot mould 1.
[0039] The foot mold 1 can be made of materials such as rubber or silicone. At the instep of the foot mold 1, the wall thickness T1 is less than the wall thickness T2 at other locations. Both wall thickness T1 and wall thickness T2 refer to the distance between the inner wall of the air chamber 11 and the outer surface of the foot mold 1. When T1 is less than T2, the wall thickness at the instep of the foot mold 1 is relatively thin, while the wall thickness at the sole and heel is relatively thick. This allows the deformation of the foot mold 1 during inflation to be concentrated on the instep and its sides, better conforming to the shoe upper for testing, and also making the foot mold 1 more robust and durable. Preferably, the wall thickness T1 is 1-2 mm, and the wall thickness T2 is 2-5 mm.
[0040] Based on the aforementioned pressure sensor 21, the pressure distribution and comfort assessment results at various points within the shoe cavity can be quantified. Based on the quantified test results, technicians can purposefully and specifically improve and adjust the tested shoe, resulting in higher improvement efficiency. The pressure sensor 21 can be a point-type pressure sensor 21, set at multiple test points as needed, or a flexible thin-film pressure sensor 21 can be used for testing. When using a flexible thin-film pressure sensor 21 for testing, its thickness is small (less than 0.6 mm) and it has a certain degree of flexibility, allowing it to change with the foot mold 1 without significantly affecting the overall dimensions of the foot mold 1. It also features a high density of pressure point distribution, a large finite area, and a fast response speed, enabling efficient measurement of the pressure at various locations on the surface of the foot mold 1.
[0041] The pressure sensor 21 is glued to the foot mold 1, with its pressure-sensing surface facing away from the foot mold 1 to ensure measurement accuracy and response speed. The pressure sensors 21 are mainly distributed at multiple locations below the ankle of the foot mold 1 to correspond to the pressure at various points inside the shoe cavity. The pressure sensors 21 typically require power to operate, and the collected pressure data can be transmitted via wired or wireless means. In this embodiment, the pressure measurement module 2 also includes a charging data cable 22, which integrates charging and data transmission functions. While electrically connecting to the pressure sensors 21, it can also connect to an external computer system 23 to provide the necessary power for the pressure sensors 21 to operate normally and transmit the electrical signals from the pressure sensors 21 to the external computer system 23 for collection, storage, processing, and analysis of pressure data using accompanying software.
[0042] Example 2
[0043] Based on the above embodiment one, such as Figure 4 As shown, the shoe cavity pressure testing device is also equipped with an inflation module 3. The output end of the inflation module 3 is sealed and connected to the air cavity 11. The inflation module 3 can inflate the air cavity 11 of the foot mold 1, causing the foot mold 1 to expand and contact the inner wall of the shoe to generate pressure.
[0044] Specifically, the inflation module 3 comprises a gas pump 31, a gas pipe 32, an on-off valve 33 and a pressure gauge 34. One end of the gas pipe 32 is in sealed communication with the air cavity 11, and the other end is connected to the gas pump 31 through the on-off valve 33 and the pressure gauge 34, and the air cavity 11 is inflated / deflated by the gas pump 31. As one of the cases, the gas pipe 32 can communicate the air cavity 11 through the air port 12, at this time, there is no need to set a sealing member to block the air port 12.
[0045] When the inflation module 3 is running, the air pressure of the foot mold 1 can be monitored, the amount of gas in the air cavity 11 is adjusted and controlled in real time, the fitting degree of the outer surface of the foot mold 1 and the inner cavity of the shoe is adjusted, and after the test is completed, the air cavity 11 can be deflated to quickly take out the foot mold 1.
[0046] Preferably, the inflation module 3 further comprises a control system, the pressure sensor 21 converts the measured pressure value into an electrical signal and feeds back to the control system, the control system receives the electrical signal fed back by the pressure sensor 21, and controls the on / off of the on-off valve and the working process of the gas pump according to the received pressure value signal, so as to realize automatic inflation operation.
[0047] As can be seen from the above, the inner cavity pressure test device of the shoe can accurately test the pressure size and distribution of each part of the inner cavity of the shoe, assist the tester to objectively judge the fitting and wearing comfort of the shoe, and quantify the test results, and assist the technical personnel to quickly improve the product with pertinence.
[0048] Although the utility model is specifically shown and introduced in combination with the preferred embodiments, it should be understood by those skilled in the art that various changes can be made to the utility model in form and details without departing from the spirit and scope of the utility model defined in the appended claims, and all the changes are within the protection scope of the utility model.
Claims
1. An insole pressure testing device, characterized by, The device comprises: a foot mold (1) made of soft elastic material, the foot mold (1) having a gas cavity (11) filled with gas and being closed to make the foot mold (1) expand to contact the inner wall of the shoe to generate pressure; a pressure measuring module (2) comprising a pressure sensor (21) arranged at multiple positions on the outer surface of the foot mold (1) to detect the pressure value of the foot mold (1) in real time.
2. The shoe insole pressure testing apparatus of claim 1, wherein The device comprises: the foot mold (1) having a gas port (12) communicating with the gas cavity (11), the gas port (12) being provided with a sealing member capable of closing the gas port (12).
3. The shoe inner cavity pressure testing device according to claim 1, wherein: the device further comprises an inflation module (3) for inflating the gas cavity (11) of the foot mold (1), the inflation module (3) comprising a gas pump (31), a gas pipe (32), a switch valve (33) and a pressure gauge (34), one end of the gas pipe (32) being in closed communication with the gas cavity (11), the other end being connected to the gas pump (31) through the switch valve (33) and the pressure gauge (34).
4. The shoe inner cavity pressure testing device according to claim 3, wherein: the inflation module (3) further comprises a control system, the pressure sensor (21) feeding back an electric signal to the control system, the control system receiving the signal and controlling the on / off of the switch valve (33) and the working process of the gas pump (31) to realize automatic inflation.
5. The shoe inner cavity pressure testing device according to claim 1, wherein: the pressure sensor (21) is a flexible thin film pressure sensor or a point pressure sensor.
6. The shoe inner cavity pressure testing device according to claim 5, wherein: the pressure sensor (21) is adhered to the foot mold (1) by glue, and the pressure sensing surface of the pressure sensor (21) is arranged to face away from the foot mold (1).
7. The shoe inner cavity pressure testing device according to claim 1, wherein: the pressure measuring module (2) further comprises a charging data line (22) electrically connected to the pressure sensor (21) for transmitting the electric signal of the pressure sensor (21) to an external computer system (23).
8. The shoe inner cavity pressure testing device according to claim 1, wherein: the foot mold (1) is made of rubber or silicone material.
9. The shoe inner cavity pressure testing device according to claim 1, wherein: the wall thickness T1 of the foot mold (1) at the instep is smaller than the wall thickness T2 of the foot mold (1) at other positions, the wall thickness T1 and the wall thickness T2 being the distance between the inner wall of the gas cavity (11) and the outer surface of the foot mold (1).
10. The shoe inner cavity pressure testing device according to claim 9, wherein: the wall thickness T1 is 1-2 mm, and the wall thickness T2 is 2-5 mm.