Method for detecting fixing strength of felt of seat back plate

Abstract

The invention discloses a method for detecting the fixing strength of a felt on a seat back plate, which comprises the following steps of: installing a to-be-detected seat provided with a hook or a storage net in an environmental chamber, increasing load, respectively adjusting the temperature of the environmental chamber to room temperature, low temperature and high temperature, correspondingly storing for a period of time, and checking whether the seat has surface defects or not; adjusting the use position of the to-be-tested seat backrest, and continuing the previous step; different hooks or storage nets are selected to be installed on the same batch of seats to be tested, and the previous two steps are repeated; when the surface defect is detected in a certain step, the detection is finished, the fixing strength is unqualified, and when the surface defect does not appear in the detection result, the fixing strength is qualified. According to the detection method, factors influencing the fixing strength of the felt of the seat back plate are fully considered, so that the detection result is reliable, the blank in the aspect of detecting the fixing strength of the felt and the seat back plate is filled, and the detection result of the seat in the seat research and development or production process is more comprehensive.

Description

Technical Field

[0001] The present application relates to the technical field of seat performance testing, and in particular, to a method for testing the fixing strength of seat back panel felt. Background Art

[0002] Nowadays, passenger cars have long become an indispensable part of people's daily lives, and people will store various items such as documents, food, drinking water, etc. in the car. Since the rear seats are connected to the luggage space, users will buy Velcro hooks, Velcro hook storage nets, etc., stick them on the felt on the seat back panel, and then hang the items on the hooks or put them in the storage net. The back of the rear seat is usually covered with a whole piece of felt, which is fixed to the seat frame by hot melt adhesive bonding or leather card strip extrusion. If the fixing strength between the seat back panel and the felt is insufficient, there is a risk of a large area of ​​felt falling off the seat frame after heavy objects are hung on the hook or placed in the storage net, affecting the normal use of users and causing after-sales complaints about the product. Therefore, in the research and development and production process of the rear seats, it is necessary to add a test to test the fixing strength of the felt and the seat back panel, but there is no relevant test method in the prior art. Summary of the invention

[0003] To solve at least one aspect of the above problems, the present invention provides a method for detecting the fixing strength of a seat back panel felt, comprising the following steps:

[0004] Step 1: Install the seat to be tested on a fixed frame and place it in the environmental chamber;

[0005] Step 2: Install the hook or storage net on the felt of the seat back panel to be tested;

[0006] Step 3: Add weight to the hook or storage net;

[0007] Step 4: Adjust the temperature of the environmental chamber to the first test temperature and save the first time period;

[0008] Step 5: Check whether the seat in step 4 has surface defects. If there are surface defects, it means that the test result is unqualified and the test is ended; if there are no surface defects, proceed to the next step;

[0009] Step 6: Adjust the temperature of the environmental chamber to the second test temperature and save the second time period;

[0010] Step 7: Check whether the seat in step 6 has surface defects. If there are surface defects, it means that the test result is unqualified and the test is ended; if there are no surface defects, proceed to the next step;

[0011] Step 8: Adjust the temperature of the environmental chamber to a third test temperature, save the third time period, and the first test temperature, the second test temperature and the third test temperature are different from each other;

[0012] Step 9: Check whether the seat in step 8 has surface defects. If there are surface defects, it means that the test result is unqualified and the test is ended; if there are no surface defects, proceed to the next step;

[0013] Step 10: Adjust the seat back to be tested so that the use position is different from that in step 1 and repeat steps 4 to 9.

[0014] Through the above technical solution, the hooks and storage nets commonly used by users are used to design their sticking positions and load-bearing weights on the seat back felt when the backrest is in different use positions. After being stored for a period of time under extremely cold, normal temperature and high temperature environmental conditions, the back felt and its appearance matching with the seat frame are checked to obtain the results of the seat back felt fixing strength. The detection method of the present application fully considers the factors that affect the seat back felt fixing strength, making the detection results reliable, and filling the gap in the inspection of the felt and seat back fixing strength, making the seat detection results more comprehensive during the seat development or production process, which helps to improve the production quality of the seat.

[0015] Preferably, the method further comprises step 11: using hooks or storage nets different from those in step 2 and seats to be tested from the same batch as those in step 1, and repeating steps 1 to 10.

[0016] Taking into account the temperature in the cold weather in the north and the temperature in a closed car in the high temperature summer, preferably, the first test temperature is 20-25°C, and the first time period is 4-32 hours; the second test temperature is -45--35°C, and the second time period is 4-32 hours; the third test temperature is 50-85°C, and the third time period is 4-32 hours.

[0017] Since the effect of fixing the felt to the backboard in high and low temperature environments is worse than that in normal temperature, preferably, the second time period is longer than the first time period, and the third time period is longer than the first time period.

[0018] Preferably, the use position of the seat back to be tested has several gears, and the angle between the backrest and the vertical direction increases as the number of gears increases; the use position of the seat back to be tested in step 10 includes the backrest in a vertical state, the backrest in gear 1, and the backrest in the highest gear. When the use position of the seat back to be tested is in different gears, the angle between the backrest and the vertical direction is different, and the tension on the felt is different when the hook or storage net is loaded. Therefore, the test method is designed to test the backrest in different use positions, which helps to improve the accuracy of the results.

[0019] Preferably, the load is 3 to 15 kg.

[0020] Preferably, in step 2, when a hook is provided on the felt back panel of the seat to be tested, two hooks are provided, and the two hooks are of the same type, respectively installed at the inner area and the outer area thereof; when a storage net is provided on the felt back panel of the seat to be tested, one storage net is provided.

[0021] Preferably, the hook is a Velcro type hook and a 3M glue type hook; the storage net is a Velcro type storage net and a 3M glue type storage net.

[0022] Preferably, the surface defects include cracking of the skeleton and the felt, deformation of the skeleton, shedding of the felt, and change in the gap.

[0023] The present invention provides a method for detecting the fixing strength of a seat back panel felt, which has the following beneficial effects:

[0024] The detection method of the present application provides a method for detecting the fixing strength of the seat back panel and the felt. By selecting different hooks and storage nets, different sticking positions and load-bearing weights are designed on the seat back panel felt when the backrest is in different use positions. After being stored for a period of time under extremely cold, normal temperature and high temperature environmental conditions, the back panel felt and its appearance matching with the seat frame are checked to determine the result of the fixing strength of the seat back panel felt. The detection method of the present application fully considers the factors that affect the fixing strength of the seat back panel felt, making the detection results reliable, and filling the gap in the inspection of the fixing strength of the felt and the seat back panel, making the seat detection results more comprehensive during the seat research and development or production process, which helps to improve the production quality of the seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to better understand the above and other purposes, features, advantages and functions of the present invention, reference may be made to the embodiments shown in the accompanying drawings. The same reference numerals in the accompanying drawings refer to the same components. It should be understood by those skilled in the art that the accompanying drawings are intended to schematically illustrate the preferred embodiments of the present invention and have no limiting effect on the scope of the present invention, and the components in the drawings are not drawn to scale.

[0026] Figure 1 A schematic diagram of a method for detecting the fixing strength of seat back felt according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0027] The following is a description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0028] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc. may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0029] In order to at least partially solve the above problems and one or more of other potential problems, an embodiment of the present disclosure provides a method for detecting the fixing strength of a seat back panel felt, comprising the following steps:

[0030] Step 1: Install the seat to be tested on a fixed frame and place it in the environmental chamber;

[0031] Step 2: Install the hook or storage net on the felt of the seat back panel to be tested;

[0032] Step 3: Add weight to the hook or storage net;

[0033] Step 4: Adjust the temperature of the environmental chamber to the first test temperature and save the first time period;

[0034] Step 5: Check whether the seat in step 4 has surface defects. If there are surface defects, it means that the test result is unqualified and the test is ended; if there are no surface defects, proceed to the next step;

[0035] Step 6: Adjust the temperature of the environmental chamber to the second test temperature and save the second time period;

[0036] Step 7: Check whether the seat in step 6 has surface defects. If there are surface defects, it means that the test result is unqualified and the test is ended; if there are no surface defects, proceed to the next step;

[0037] Step 8: Adjust the temperature of the environmental chamber to a third test temperature, save the third time period, and the first test temperature, the second test temperature and the third test temperature are different from each other;

[0038] Step 9: Check whether the seat in step 8 has surface defects. If there are surface defects, it means that the test result is unqualified and the test is ended; if there are no surface defects, proceed to the next step;

[0039] Step 10: Adjust the seat back to be tested so that the use position is different from that in step 1 and repeat steps 4 to 9.

[0040] Specifically, Figure 1 As shown, the following steps are included: Step 1: Install the seat to be tested on a fixed frame and place it in an environmental chamber; wherein, the use position of the seat back to be tested has several gears, and as the number of gears increases, the angle between the backrest and the vertical direction increases. In this step, the use position of the seat back to be tested is adjusted to one of the positions, and installed on the fixed frame in this state.

[0041] Step 2: Install a hook or a storage net on the felt of the seat back to be tested; specifically, the hook is a Velcro type hook and a 3M glue type hook, and the diameter of the hook is preferably 30-40 mm. When a hook is set on the felt of the seat back to be tested, two hooks are provided, and the two hooks are of the same type, which are respectively installed in the inner area and the outer area thereof, wherein the outer area refers to an area within a range less than or equal to 30 mm from the edge of the seat, and the inner area refers to an area within a range greater than 30 mm from the edge of the seat; the storage net is a Velcro type storage net and a 3M glue type storage net, and the size of the storage net is greater than 250 mm x 10 mm. When a storage net is set on the felt of the seat back to be tested, one storage net is provided.

[0042] Step 3: Add a weight to the hook or storage net; preferably, the weight is 3 to 15 kg. In this embodiment, the weight is set to 5 kg.

[0043] Step 4: Adjust the temperature of the environmental chamber to the first test temperature and save the first time period; preferably, the first test temperature is 20-25°C, and the first time period is 4-32h; in this embodiment, the first test temperature is set to 23°C, and the first time period is set to 4h, or 8h or 16h.

[0044] Step 5: Check whether the seat in step 4 has any surface defects. If there are surface defects, it means that the test result is unqualified and the test is terminated; if there are no surface defects, proceed to the next step; among them, surface defects include cracking of the frame and felt, deformation of the frame, shedding of the felt, and change in the gap.

[0045] Step 6: Adjust the temperature of the environmental chamber to the second test temperature and save the second time period; preferably, the second time period is longer than the first time period, the second test temperature is -45 to -35°C, and the second time period is 4 to 32 hours; in this embodiment, the second test temperature is -40°C, and the second time period is 16 hours, or 24 hours or 32 hours.

[0046] Step 7: Check whether the seat in step 6 has any surface defects. If there are surface defects, it means that the test result is unqualified and the test is terminated; if there are no surface defects, proceed to the next step; among them, surface defects include cracking of the frame and felt, deformation of the frame, shedding of the felt, and change in the gap.

[0047] Step 8: Adjust the temperature of the environmental chamber to the third test temperature, and save the third time period. The first test temperature, the second test temperature and the third test temperature are different from each other; preferably, the third time period is longer than the first time period, the third test temperature is 50-85°C, and the third time period is 4-32h; in this embodiment, the third test temperature is 60°C, and the third time period is 16h, or 24h or 32h.

[0048] Step 9: Check whether the seat in step 8 has any surface defects. If there are surface defects, it means that the test result is unqualified and the test is terminated; if there are no surface defects, proceed to the next step; among them, surface defects include cracking of the frame and felt, deformation of the frame, shedding of the felt, and change in the gap.

[0049] Step 10: Adjust the use position of the seat back to be tested to be different from the use position in step 1, and repeat steps 4 to 9; in this embodiment, the use position of the seat back to be tested includes the backrest being in a vertical state, the backrest being in the first gear, and the backrest being in the highest gear position. Specifically, for the same type of hook or storage net installed on the corresponding seat to be tested, the use position of the seat back to be tested in step 1 during the first test is that the backrest is in a vertical state; during the second test, the use position of the seat back to be tested is that the backrest is in the first gear, and steps 4 to 9 are repeated; during the third test, the use position of the seat back to be tested is that the backrest is in the highest gear position, and steps 4 to 9 are repeated again.

[0050] Step 11: Use hooks or storage nets different from those in step 2 and seats to be tested from the same batch as step 1, and repeat steps 1 to 10. Specifically, in the first test, two Velcro-type hooks are installed on the seat to be tested and steps 1 to 10 are performed; in the second test, two 3M adhesive-type hooks are installed on the second seat to be tested from the same batch, and steps 1 to 10 are repeated; in the third test, a Velcro-type storage net is installed on the third seat to be tested from the same batch, and steps 1 to 10 are repeated; in the fourth test, a 3M adhesive-type storage net is installed on the fourth seat to be tested from the same batch, and steps 1 to 10 are repeated.

[0051] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the present invention.

Claims

1. A method for testing the fixing strength of seat back felt, characterized in that: The following steps are involved: Step 1: Install the seat to be tested on a fixed frame and place it in the environmental chamber; Step 2: Install the hook or storage net on the felt of the seat back panel to be tested; Step 3: Add weight to the hook or storage net; Step 4: Adjust the temperature of the environmental chamber to the first test temperature and save the first time period; Step 5: Check whether the seat in step 4 has surface defects. If there are surface defects, it means that the test result is unqualified and the test is ended; if there are no surface defects, proceed to the next step; Step 6: Adjust the temperature of the environmental chamber to the second test temperature and save the second time period; Step 7: Check whether the seat in step 6 has surface defects. If there are surface defects, it means that the test result is unqualified and the test is ended; if there are no surface defects, proceed to the next step; Step 8: Adjust the temperature of the environmental chamber to a third test temperature, save the third time period, and the first test temperature, the second test temperature and the third test temperature are different from each other; Step 9: Check whether the seat in step 8 has surface defects. If there are surface defects, it means that the test result is unqualified and the test is ended; if there are no surface defects, proceed to the next step; Step 10: Adjust the seat back to be tested so that the use position is different from that in step 1 and repeat steps 4 to 9.

2. A method for detecting the fixing strength of seat back felt according to claim 1, characterized in that: The method further comprises step 11: using a hook or storage net different from that in step 2 and seats to be tested from the same batch as those in step 1, and repeating steps 1 to 10.

3. A method for detecting the fixing strength of seat back felt according to claim 1, characterized in that: The first test temperature is 20-25°C, and the first time period is 4-32 hours; the second test temperature is -45--35°C, and the second time period is 4-32 hours; the third test temperature is 50-85°C, and the third time period is 4-32 hours.

4. A method for detecting the fixing strength of seat back felt according to claim 3, characterized in that: The second time period is longer than the first time period, and the third time period is longer than the first time period.

5. The method for detecting the fixing strength of seat back felt according to claim 1, characterized in that: The use position of the seat back to be tested has several gears, and the angle between the backrest and the vertical direction increases as the gear number increases; the use position of the seat back to be tested in step 10 includes the backrest in a vertical state, the backrest in gear 1, and the backrest in the highest gear number.

6. A method for detecting the fixing strength of seat back felt according to claim 1, characterized in that: The load is 3 to 15 kg.

7. A method for detecting the fixing strength of seat back felt according to claim 1, characterized in that: In the step 2, when hooks are set on the felt of the seat back panel to be tested, two hooks are set, and the two hooks are of the same type and are respectively installed at the inner area and the outer area thereof; when a storage net is set on the felt of the seat back panel to be tested, one storage net is set.

8. A method for detecting the fixing strength of seat back felt according to claim 7, characterized in that: The hooks are Velcro type hooks and 3M glue type hooks; the storage nets are Velcro type storage nets and 3M glue type storage nets.

9. A method for detecting the fixing strength of seat back felt according to claim 1, characterized in that: The surface defects include cracking of the frame and the felt, deformation of the frame, shedding of the felt, and change in the gap.

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