Detection tool for automobile safety belt spring bolt

Abstract

The invention relates to the technical field of detection tools, in particular to a detection tool for an automobile safety belt spring bolt, and the detection tool comprises a detection block for detecting the performance of the automobile safety belt spring bolt, and a thickness measurement groove and a height measurement groove which are formed in the detection block, the thickness measurement groove is used for carrying out the alignment detection of the thickness value of the automobile safety belt spring bolt, and the height measurement groove is used for carrying out the alignment detection of the thickness value of the automobile safety belt spring bolt. The height measuring groove is used for carrying out alignment detection on the height value of the automobile safety belt spring bolt. According to the automobile safety belt spring bolt strength detection device, the automobile safety belt spring bolt is sequentially clamped into the thickness measurement groove and the height measurement groove, and whether the length and the width of the automobile safety belt spring bolt meet factory requirements or not is judged by judging whether the automobile safety belt spring bolt can be clamped into the thickness measurement groove and the height measurement groove in a screwed and sliding mode or not; and meanwhile, the technical requirements of the detection process on operators are relatively reduced, so that more workers can be cultivated to be engaged in the process.

Description

Technical Field

[0001] The invention relates to the technical field of inspection tools, in particular to an inspection tool for a locking tongue of a vehicle safety belt. Background Art

[0002] In the car seat belt system, a vital component is the seat belt locking tongue. The main function of this component is that when the seat belt is pulled out for use, it will firmly lock the seat belt. The car seat belt lock tongue needs to be tested by corresponding inspection tools before leaving the factory.

[0003] Conventionally, when testing the car seat belt lock tongue, the car seat belt lock tongue is usually stretched after being connected to the seat belt. The strength test of the car seat belt lock tongue is achieved by stretching both ends of the seat belt. However, during the above test process, the car seat belt lock tongue may be broken due to stress before deformation occurs, so that the car seat belt lock tongue strength test cannot obtain an accurate value. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the strength test of the automobile seat belt lock tongue is affected by the quality of the seat belt and cannot obtain an accurate value, and to propose a test fixture for the automobile seat belt lock tongue.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A checking fixture for a car seat belt lock tongue, the checking fixture comprising:

[0007] A test block for testing the performance of a car seat belt lock tongue;

[0008] A thickness measuring slot and a height measuring slot are provided on the detection block, wherein the thickness measuring slot is used to perform alignment detection on the thickness value of the automobile seat belt lock tongue, and the height measuring slot is used to perform alignment detection on the height value of the automobile seat belt lock tongue;

[0009] A driving slider slidably mounted on the detection block;

[0010] A limit block fixedly mounted on the detection block;

[0011] A limit rod movably mounted on the driving slider, the limit rod being used to cooperate with the limit block to achieve horizontal limit of the driving slider;

[0012] A mounting rod fixedly mounted on the driving slider;

[0013] An electric cylinder fixedly mounted on the mounting rod, wherein an output end of the electric cylinder is fixedly connected to the limiting rod;

[0014] A display panel fixedly mounted on the detection block, the display panel being used to receive and display the operating power of the electric cylinder;

[0015] A resistance ball is fixedly mounted on the lower end of the limiting rod, and the resistance ball movably resists against the upper surface of the locking tongue of the automobile safety belt.

[0016] Preferably, the detection block is composed of a first assembly block connected to a second assembly block, and anti-overturning blocks are fixedly connected to both sides of the detection block, and the longitudinal section of the anti-overturning block is a triangle.

[0017] Preferably, the detection block is provided with a receiving slide groove for slidingly installing the driving slider, a return spring is fixedly connected between the receiving slide groove and the driving slider, and the driving slider is provided with a movable slide groove, and a movable slider rotatably connected to the limit rod is slidably sleeved in the movable slide groove.

[0018] Preferably, a rectangular hole for slidingly fitting the limiting rod is formed on the limiting block, and a rectangular plate corresponding to the rectangular hole is fixedly connected to one end of the limiting rod away from the movable sliding block.

[0019] Preferably, the installation rod is composed of a transverse section and a longitudinal section, the detection block is provided with a guide slot, and a guide sliding block fixedly connected to the transverse section of the installation rod is slidably sleeved in the guide slot.

[0020] Preferably, a battery for providing energy to the electric cylinder is fixedly mounted on the mounting rod.

[0021] Preferably, a guide plate slidably connected to the output end of the electric cylinder is fixedly connected to the longitudinal section of the mounting rod, a resistance plate is fixedly connected to the output end of the electric cylinder, and a control component is provided on the guide plate which is triggered by the resistance plate to control the closing of the electric cylinder.

[0022] Preferably, a guide sliding hole for slidingly fitting the output end of the electric cylinder is provided on the guide plate, and the abutment plate is located above the guide plate.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1. In the present invention, the automobile safety belt lock tongue is inserted into the thickness measuring groove and the height measuring groove in sequence, and whether the length and width of the automobile safety belt lock tongue meet the factory requirements is judged by whether the automobile safety belt lock tongue can be smoothly inserted into the thickness measuring groove and the height measuring groove. The operation is simple and helps to improve the efficiency of the staff in detecting the height and thickness of the automobile safety belt lock tongue.

[0025] 2. In the present invention, the limit rod is driven downward by the electric cylinder, and the limit rod squeezes the automobile seat belt lock tongue through the resistance ball, so that the automobile seat belt lock tongue is deformed by force, and the current operating power of the electric cylinder is displayed through the display panel. Then, after the automobile seat belt lock tongue is deformed, the force that the automobile seat belt lock tongue can withstand can be judged according to the operating power value of the electric cylinder at this time, so as to judge whether the strength of the automobile seat belt lock tongue is qualified. By automatically testing the strength of the automobile seat belt lock tongue, it is helpful to reduce the work intensity of the staff. At the same time, the technical requirements of the detection process for the operator are relatively reduced, which is helpful to train more workers to engage in this process.

[0026] 3. In the present invention, the control component is used to determine whether the electric cylinder causes deformation to the automobile seat belt lock tongue, and the electric cylinder is stopped in time after the automobile seat belt lock tongue is deformed, thereby ensuring the accuracy of the electric cylinder action power value displayed on the display panel after the automobile seat belt lock tongue is deformed, which helps to ensure the accuracy of the automobile seat belt lock tongue strength test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the local structure of the present invention Figure 1 ;

[0029] Figure 3 It is a schematic diagram of the local structure of the present invention Figure 2 ;

[0030] Figure 4 It is a schematic diagram of the local structure of the present invention Figure 3 ;

[0031] Figure 5 Schematic diagram of the detection block structure of the present invention Figure 1 ;

[0032] Figure 6 Schematic diagram of the detection block structure of the present invention Figure 2 ;

[0033] Figure 7 For the present invention Figure 6 Schematic diagram of the structure in cross-section;

[0034] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0035] 1. Car seat belt lock tongue;

[0036] 2. Detection block; 201. First assembly block; 202. Second assembly block; 203. Anti-overturning block;

[0037] 3. Thickness measuring slot;

[0038] 4. Height measuring slot;

[0039] 5. Driving slider; 501. Accommodating slide groove; 502. Return spring; 503. Movable slide groove; 504. Movable slider;

[0040] 6. Limit block; 601. Rectangular hole;

[0041] 7. Limit rod; 701. Rectangular plate;

[0042] 8. Mounting rod; 801. Guide slide groove; 802. Guide slide block;

[0043] 9. Electric cylinder; 901. Battery; 902. Guide plate; 903. Contact plate; 904. Control assembly;

[0044] 10. Display panel;

[0045] 11. Contact ball. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0047] The present invention provides the following preferred embodiments:

[0048] Embodiment 1

[0049] refer to Figure 6 and Figure 7 As shown, this embodiment provides a checking fixture for a car seat belt lock tongue, the checking fixture comprising:

[0050] The detection block 2 is used for testing the performance of the automobile seat belt lock tongue 1. The detection block 2 is composed of a first assembly block 201 and a second assembly block 202 connected together. It should be noted that: the first assembly block 201 and the second assembly block 202 are provided with corresponding upper and lower threaded holes, and the first assembly block 201 and the second assembly block 202 are fixedly connected by corresponding screws and threaded holes, which helps to ensure the stability of the connection between the first assembly block 201 and the second assembly block 202.

[0051] The thickness measuring groove 3 and the height measuring groove 4 are provided on the detection block 2. The thickness measuring groove 3 is used for aligning and detecting the thickness value of the automobile seat belt lock tongue 1, and the height measuring groove 4 is used for aligning and detecting the height value of the automobile seat belt lock tongue 1. It is only necessary to insert the automobile seat belt lock tongue 1 into the thickness measuring groove 3 longitudinally, and insert the automobile seat belt lock tongue 1 into the height measuring groove 4 transversely. The thickness and height of the automobile seat belt lock tongue 1 can be judged whether they are qualified by the silkiness of the automobile seat belt lock tongue 1 during the insertion process, thereby ensuring that the dimensions of the automobile seat belt lock tongue 1 leaving the factory are all qualified products.

[0052] When using the inspection tool for the automobile seat belt tongue, follow the steps below:

[0053] Align the corners of the first assembly block 201 and the second assembly block 202. At this time, the threaded holes on the first assembly block 201 and the second assembly block 202 are aligned vertically, and the screws are screwed into the threaded holes to complete the fixed connection operation of the first assembly block 201 and the second assembly block 202.

[0054] Align the automobile safety belt lock tongue 1 with the thickness measuring groove 3, so that the automobile safety belt lock tongue 1 enters the upper end of the thickness measuring groove 3, and slide the automobile safety belt lock tongue 1 downward in the thickness measuring groove 3, and judge whether the thickness of the automobile safety belt lock tongue 1 is qualified according to the silkiness of the automobile safety belt lock tongue 1 during the sliding process;

[0055] Place the car seat belt lock tongue 1 horizontally, align the car seat belt lock tongue 1 with the height measuring groove 4, and insert the car seat belt lock tongue 1 into the height measuring groove 4, and judge whether the height of the car seat belt lock tongue 1 is qualified according to the silkiness of the car seat belt lock tongue 1 during the insertion process.

[0056] Embodiment 2

[0057] refer to Figure 5 As shown, a checking fixture for a car seat belt lock tongue is disclosed in the third embodiment of the present invention, and its structure is basically the same as that in the first embodiment, and its difference lies in the connection mode between the first assembly block 201 and the second assembly block 202. In order to improve the connection speed between the first assembly block 201 and the second assembly block 202, a slide groove is provided at the bottom end of the first assembly block 201, and a slider corresponding to the slide groove is provided at the top end of the second assembly block 202. The first assembly block 201 and the second assembly block 202 are provided with vertically aligned clamping holes, and a clamping rod is slidably sleeved in the clamping hole, so that the operator can realize the fixed connection between the first assembly block 201 and the second assembly block 202 without using tools.

[0058] When using the inspection tool for the automobile seat belt tongue, follow the steps below:

[0059] Push the slider on the second assembly block 202 into the slide groove on the first assembly block 201 so that the second assembly block 202 is aligned with the side of the first assembly block 201. At this time, the clamping holes on the first assembly block 201 and the second assembly block 202 are aligned up and down, and the clamping rod is inserted into the clamping hole to complete the fixed connection operation of the first assembly block 201 and the second assembly block 202.

[0060] Embodiment 3

[0061] refer to Figure 1As shown, on the basis of the first embodiment, this embodiment introduces an anti-overturning block 203, a driving slider 5, a receiving slide groove 501, a return spring 502, a movable slide groove 503, a movable slider 504, a limit block 6, a rectangular hole 601, a limit rod 7, a rectangular plate 701, a mounting rod 8, a guide slide groove 801, a guide slider 802, an electric cylinder 9, a battery 901, a display panel 10 and a contact ball 11, so as to realize the strength test of the automobile seat belt lock tongue 1 by the inspection fixture, and the implementation method is as follows:

[0062] The driving slider 5 is slidably installed on the detection block 2. A storage slot 501 for slidably installing the driving slider 5 is provided on the detection block 2. The storage slot 501 provides a movable space for the driving slider 5, so that the driving slider 5 has the function of horizontal movement on the detection block 2. A return spring 502 is fixedly connected between the storage slot 501 and the driving slider 5. By utilizing the elastic force of the return spring 502, the driving slider 5 connected to the return spring 502 has elasticity. When the driving slider 5 is not affected by external force, it moves toward the initial state until it is reset, thereby ensuring the reusability of the driving slider 5.

[0063] The limit block 6 is fixedly mounted on the detection block 2, and the limit rod 7 is movably mounted on the driving slider 5. The limit rod 7 is used to cooperate with the limit block 6 to realize the horizontal limit of the driving slider 5. The limit rod 7 is connected to the driving slider 5 so that the limit rod 7 has the function of horizontal movement. It should be noted that the initial position of the limit rod 7 when not affected by external force is far away from the thickness measuring groove 3, thereby avoiding the limit rod 7 from causing movement interference in the process of detecting the thickness of the automobile seat belt lock tongue 1. The driving slider 5 is provided with a movable groove 503, and the movable groove 503 is slidably sleeved with a movable slider 504 rotatably connected to the limit rod 7. The movable groove 503 provides a movable space for the movable slider 504, so that the movable slider 504 has the function of moving up and down, thereby making the limit rod 7 connected to the movable slider 504 have the function of moving up and down. At the same time, since the limit block 6 is provided with a rectangular hole 601 for sliding the limit rod 7, and the width value of the rectangular hole 601 is the same as the diameter value of the limit rod 7 The limit rod 7 and the movable slider 504 are connected in a rotational manner, and a damping bearing is used to install the limit rod 7 and the movable slider 504, so that the limit rod 7 will not rotate due to the influence of gravity when not affected by external force. The initial state of the rectangular plate 701 at the end position of the limit rod 7 is a vertical state. Therefore, the limit rod 7 has the function of rotating on the movable slider 504. When the rectangular plate 701 rotates to the inclined state, the rectangular plate 701 tends to move in the initial state under the elastic force of the reset spring 502. However, since the opening angle of the rectangular hole 601 remains unchanged, the rectangular plate 701 will counteract the movement of the side of the limit block 6 away from the driving slider 5, thereby limiting the movement of the limit rod 7, which helps to ensure the stability of the limit rod 7.

[0064] The mounting rod 8 is fixedly mounted on the driving slider 5. The mounting rod 8 consists of a transverse section and a longitudinal section. A guide groove 801 is provided on the detection block 2. A guide slider 802 is slidably mounted in the guide groove 801 and fixedly connected to the transverse section of the mounting rod 8. The mounting rod 8 is guided and limited by the guide groove 801 and the guide slider 802, which helps to ensure the stability of the mounting rod 8 during movement.

[0065] The electric cylinder 9 is fixedly mounted on the mounting rod 8, the output end of the electric cylinder 9 is fixedly connected to the limit rod 7, and a battery 901 for providing energy for the electric cylinder 9 is fixedly mounted on the mounting rod 8. The limit rod 7 is controlled by the electric cylinder 9 to enter a moving state or a stationary state.

[0066] The display panel 10 is fixedly mounted on the detection block 2 . The display panel 10 is used to receive and display the operating power of the electric cylinder 9 , and digitize the operating power of the electric cylinder 9 , so that the operator can more clearly judge the force generated during the operation of the electric cylinder 9 .

[0067] The contact ball 11 is fixedly installed at the lower end of the limit rod 7, and the contact ball 11 movably contacts the upper surface of the car seat belt lock tongue 1. Since the end surface of the car seat belt lock tongue 1 that contacts the contact ball 11 is a curved surface, a spherical contact ball 11 is adopted, so that the contact mode between the contact ball 11 and the car seat belt lock tongue 1 is point contact, so that the movement generated at the output end when the electric cylinder 9 is working is more sensitive.

[0068] Anti-overturning blocks 203 are fixedly connected to both sides of the detection block 2. The longitudinal section of the anti-overturning block 203 is triangular. The anti-overturning blocks 203 increase the contact area between the detection block 2 and the work surface, so that the car seat belt lock tongue 1 will not cause the detection block 2 to overturn when subjected to a downward force.

[0069] When using the inspection tool for the automobile seat belt tongue, follow the steps below:

[0070] The driving slider 5 is pushed, so that the driving slider 5 performs horizontal linear motion in the receiving slide groove 501 toward the installation direction of the limit block 6, and the reset spring 502 is stretched. The driving slider 5 drives the installation rod 8 to perform horizontal linear motion in the installation direction of the limit block 6, and the installation rod 8 drives the electric cylinder 9 to perform horizontal linear motion in the installation direction of the limit block 6. The limit rod 7 enters the rectangular hole 601, and the limit rod 7 is rotated so that the rectangular plate 701 is in an inclined state. The driving slider 5 is released, and the rectangular plate 701 performs horizontal linear motion in the installation direction of the driving slider 5 under the elastic force of the reset spring 502, so that the rectangular plate 701 and the limit block 6 are movably opposed to each other;

[0071] Start the electric cylinder 9, which drives the limit rod 7 to move vertically downward in the rectangular hole 601, and the limit rod 7 drives the movable slider 504 to move vertically downward in the movable slide groove 503. The limit rod 7 drives the resistance ball 11 to squeeze the car seat belt lock tongue 1 downward, and displays the operating power value of the electric cylinder 9 in real time through the display panel 10. When the car seat belt lock tongue 1 is deformed, stop the electric cylinder 9, and judge whether the strength of the car seat belt lock tongue 1 is qualified by the operating power value of the electric cylinder 9 displayed on the display panel 10 at this time.

[0072] Embodiment 4

[0073] refer to Figures 2 to 4 As shown, based on the first embodiment, this embodiment introduces the guide plate 902, the contact plate 903 and the control component 904 to achieve a higher accuracy of the strength test result of the automobile seat belt lock tongue 1; the implementation method is as follows:

[0074] A guide plate 902 is fixedly connected to the longitudinal section of the mounting rod 8 and is slidably connected to the output end of the electric cylinder 9. A guide sliding hole for slidingly fitting the output end of the electric cylinder 9 is provided on the guide plate 902. A contact plate 903 is fixedly connected to the output end of the electric cylinder 9. The contact plate 903 is located above the guide plate 902. A control component 904 is provided on the guide plate 902 to control the closing of the electric cylinder 9 through the contact plate 903. The following are a variety of optional implementation methods of the control component 904:

[0075] Photoelectric sensing: A photoelectric sensor assembly is installed on the guide plate 902. When the output end of the electric cylinder 9 drives the contact plate 903 to move, the contact plate 903 will block the light path, causing the detection signal of the photoelectric sensor to change. By monitoring the change in the output signal of the photoelectric sensor, it is determined whether the car seat belt lock tongue 1 is deformed, and the electric cylinder 9 is stopped when the output signal of the photoelectric sensor changes.

[0076] Force sensor: A force sensor is installed on the guide plate 902, and the top of the force sensor is movably against the bottom of the contact plate 903. When the output end of the electric cylinder 9 drives the contact plate 903 to move, the contact plate 903 will exert a force on the force sensor. By monitoring the output signal change of the force sensor, it is determined whether the car seat belt lock tongue 1 is deformed, and the electric cylinder 9 is stopped when the output signal of the photoelectric sensor changes.

[0077] Magnetic induction: Two magnets with the same polarities repelling each other are respectively arranged on the guide plate 902 and the contact plate 903, and a magnetic field sensor is arranged on the guide plate 902. When the output end of the electric cylinder 9 drives the contact plate 903 to move, when the distance between the two magnets changes, the magnetic field will change. By monitoring the output signal change of the magnetic field sensor, it is determined whether the automobile seat belt lock tongue 1 is deformed, and the electric cylinder 9 is stopped when the output signal of the photoelectric sensor changes.

[0078] Through the above-mentioned various optional implementation methods of the control component 904, the electric cylinder 9 can be stopped from continuing to operate in time when the automobile seat belt lock tongue 1 is deformed, which helps to ensure the accuracy of the data displayed on the display panel 10 at this time, thereby improving the accuracy of the strength test results of the automobile seat belt lock tongue 1.

[0079] When using the inspection tool for the automobile seat belt tongue, follow the steps below:

[0080] When the electric cylinder 9 drives the resistance ball 11 to squeeze the automobile seat belt lock tongue 1 downward through the limit rod 7, and the control component 904 drives the resistance plate 903 to move at the output end of the electric cylinder 9 to control the electric cylinder 9 to stop working, the operator determines whether the strength of the automobile seat belt lock tongue 1 is qualified according to the last power value of the electric cylinder 9 recorded on the display panel 10 at this time.

[0081] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A checking fixture for a car seat belt lock tongue, characterized in that: The inspection tool comprises: A testing block (2) for testing the performance of a car safety belt lock tongue (1); A thickness measuring groove (3) and a height measuring groove (4) are provided on the detection block (2), wherein the thickness measuring groove (3) is used to perform alignment detection on the thickness value of the automobile seat belt lock tongue (1), and the height measuring groove (4) is used to perform alignment detection on the height value of the automobile seat belt lock tongue (1); A driving slider (5) slidably mounted on the detection block (2); A limit block (6) fixedly mounted on the detection block (2); a limiting rod (7) movably mounted on the driving slider (5), the limiting rod (7) being used to cooperate with the limiting block (6) to achieve horizontal limiting of the driving slider (5); A mounting rod (8) fixedly mounted on the driving slider (5); An electric cylinder (9) fixedly mounted on the mounting rod (8), wherein an output end of the electric cylinder (9) is fixedly connected to a limiting rod (7); a display panel (10) fixedly mounted on the detection block (2), the display panel (10) being used to receive and display the operating power of the electric cylinder (9); A resistance ball (11) is fixedly mounted on the lower end of the limiting rod (7), and the resistance ball (11) movably resists against the upper surface of the automobile safety belt locking tongue (1).

2. A checking fixture for a car seat belt lock tongue according to claim 1, characterized in that: The detection block (2) is composed of a first assembly block (201) and a second assembly block (202) connected together, and anti-overturning blocks (203) are fixedly connected to both sides of the detection block (2), and the longitudinal section of the anti-overturning block (203) is a triangle.

3. The inspection tool for the automobile seat belt lock tongue according to claim 1, characterized in that: The detection block (2) is provided with a receiving slide groove (501) for slidingly installing the driving slider (5), a return spring (502) is fixedly connected between the receiving slide groove (501) and the driving slider (5), and the driving slider (5) is provided with a movable slide groove (503), and a movable slider (504) rotatably connected to the limit rod (7) is slidably sleeved in the movable slide groove (503).

4. A checking fixture for a car seat belt lock tongue according to claim 1, characterized in that: The limiting block (6) is provided with a rectangular hole (601) for slidingly fitting the limiting rod (7), and one end of the limiting rod (7) away from the movable slider (504) is fixedly connected to a rectangular plate (701) arranged corresponding to the rectangular hole (601).

5. The inspection tool for the automobile seat belt lock tongue according to claim 1, characterized in that: The installation rod (8) is composed of a transverse section and a longitudinal section. The detection block (2) is provided with a guide slot (801). A guide sliding block (802) is slidably mounted in the guide slot (801) and is fixedly connected to the transverse section of the installation rod (8).

6. A checking fixture for a car seat belt lock tongue according to claim 5, characterized in that: A storage battery (901) for providing energy to the electric cylinder (9) is fixedly mounted on the mounting rod (8).

7. A checking fixture for a car seat belt lock tongue according to claim 6, characterized in that: A guide plate (902) is fixedly connected to the longitudinal section of the mounting rod (8) and is slidably connected to the output end of the electric cylinder (9); a contact plate (903) is fixedly connected to the output end of the electric cylinder (9); and a control component (904) is provided on the guide plate (902) and is triggered by the contact plate (903) to control the closing of the electric cylinder (9).

8. The inspection tool for the automobile seat belt lock tongue according to claim 7, characterized in that: The guide plate (902) is provided with a guide sliding hole for slidingly fitting the output end of the electric cylinder (9), and the contact plate (903) is located above the guide plate (902).

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