Automatic crankshaft position sensor detection device

Abstract

The invention provides an automatic crankshaft position sensor detection device. The automatic crankshaft position sensor detection device structurally comprises a base, a positioning box, a vertical plate, a sliding rail and a resistance detection structure. According to the invention, on the basis that a sliding rail arranged on a vertical plate restrains a resistance detection structure, after a sensor is positioned in a positioning box, a coil of the sensor is exposed below the resistance detection structure, then the resistance detection structure pulls a vertical spring through sliding of a sliding block, and then a universal meter and a rubber block are carried to move downwards; the rubber block is inserted into the space between the sensor and the positioning box for positioning, the left and right sides of the sensor are clamped and restrained, so that the coil can be aligned with the position of the meter pen at the lower end of the universal meter, and then the bounce positioning effect of the rubber block of the universal meter structure can be combined with the clamping body of the restraining block to enable the meter pen to be in a vertical fixed state. Therefore, the effect of stably detecting the resistance can be achieved through fixed contact with the coil in a penetrating state.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of sensor production, in particular to an automatic crankshaft position sensor detection device. BACKGROUND

[0002] The automatic crankshaft position sensor is one of core sensors in an engine electronic control system, and is mainly used for determining the rotation angle, rotation speed and piston top dead center position of a crankshaft, so as to provide control parameters such as ignition time and fuel injection timing for an ECU. Therefore, the crankshaft position sensor needs to be detected by a detection device in terms of resistance, voltage and waveform during production, so as to avoid large-scale faults in later use due to abnormal data indexes, and to improve the detection strength of the crankshaft position sensor. As found by the present inventor, the existing detection device mainly has the following defects: when the detection device detects the coil resistance of the crankshaft position sensor, the sensor needs to be disconnected from the plug, and then a multimeter is used to detect the coil, so that when the detection device positions the sensor and then detects the resistance by using the external multimeter, the multimeter needs to be pressed by hand to stably dock with the coil position of the sensor, thus reflecting the inconvenience in detection and the complexity in manual pressing, and further reducing the efficiency of coil resistance detection of the sensor. SUMMARY

[0003] The technical solution adopted by the application to achieve the technical purpose is: an automatic crankshaft position sensor detection device, which comprises a base, a positioning box, a vertical plate, a sliding rail and a resistance detection structure, wherein the upper end of the base is fixedly connected with the lower end of the positioning box, and the sliding rail position is determined by the vertical plate, the sliding rail limits the resistance detection structure, and the resistance detection structure is communicated with the positioning box below.

[0004] As a further improvement of the application, the resistance detection structure is provided with a vertical spring, the lower end of the vertical spring is fixed to the upper end of a sliding block, and the upper end is connected to the upper end position of the vertical plate, the surface of the sliding block is loaded with a fixed block, the front end of the fixed block is provided with a pull block, and the upper end is provided with a multimeter, and the lower end edge of the fixed block is further connected with a rubber block.

[0005] As a further improvement of the application, the sliding block is further provided with a center block, the center block is welded to the back position of a block body, the upper end of the block body is provided with a positioning sleeve, the front end of the block body is further connected with a welding block, a restraining block is arranged below the welding block, and the restraining block contains a clamping body.

[0006] As a further improvement of the present application, the sliding block of the resistance detection structure is made to slide down through the slide rail of the vertical plate, while the vertical spring is pulled vertically, then the multimeter and the rubber block of the fixed block slide down, forcing the rubber block to be embedded in the inner wall position of the positioning box between the sensor and the positioning box, then the pen of the multimeter is vertically installed in the restraint block and the clamping body of the fixed block, and further vertically aligned with the coil position of the sensor of the positioning box, and the rubber block is bounced to contact the coil of the sensor.

[0007] As a further improvement of the present application, the positioning box on the base is set in a vertical orientation and is on the same vertical line with the center of the lower end of the resistance detection structure, and the outer edge of the positioning box is parallel to the vertical plate, and the slide rail of the vertical plate is set in a vertical orientation.

[0008] As a further improvement of the present application, the upper end of the vertical spring penetrates the top of the vertical plate and is locked by a bolt, the outer part of the sliding block and the fixed block are parallel to each other, and the fixed block is "L" shaped to determine the position of the multimeter, and two rubber blocks are provided at the lower end edge of the fixed block and are set in a symmetrical orientation.

[0009] As a further improvement of the present application, the center block is perpendicular to the block body and is embedded in the vertical plate, the positioning sleeve of the block body is circular in shape and matches the shape of the lower end of the vertical spring, the restraint block is square in shape and carries the clamping body inserted into the fixed block position and overlaps the edge of the pen of the multimeter.

[0010] As a further improvement of the present application, the clamping body is provided with a vertical sleeve, the upper and lower ends of the vertical sleeve are respectively provided with an upper clamp sleeve and a lower clamp sleeve and are locked by small bolts, and the central position is penetrated by a vertical groove.

[0011] As a further improvement of the present application, the vertical sleeve, the upper clamp sleeve and the lower clamp sleeve are on the same vertical center line, the edges of the upper clamp sleeve and the lower clamp sleeve are each provided with four small bolts, the vertical sleeve is provided with two groups which are matched with the number of pens of the multimeter and have a safety distance therebetween.

[0012] As a further improvement of the present application, the distance between the vertical sleeves is further provided with an insulating parallel block, the left and right ends of the insulating parallel block are provided with clamping frames, the inner wall of the clamping frame is provided with a contact layer which is in contact with the outer edge of the vertical sleeve.

[0013] As a further improvement of the present application, the insulating parallel block is made of rubber and is solid in shape, the clamping frame is semicircular in shape and is set in a symmetrical orientation at the left and right ends of the insulating parallel block to limit the outer edges of the two groups of vertical sleeves.

[0014] As a further improvement of the present application, the positioning box is provided with an overlapping layer arranged at the center of the top edge of the box body, and a magnetic plate and an insertion block are connected to the lower end of the box body, and a frame is arranged at the position of the pickup structure outside the box body.

[0015] As a further improvement of the present application, the box body overlaps with the lower end of the slide rail through the overlapping layer, the lower end of the box body is covered by the magnetic plate, and the lower end of the magnetic plate is parallel to the surface of the base through the insertion block, the frame is rectangular in shape, and the pickup structure moves in a vertical orientation.

[0016] As a further improvement of the present application, the pickup structure is also provided with a pull slot, which is opened at the middle upper position of the pull plate, and the pull plate surface is loaded with a balance block, and the lower end position of the balance block is arranged with a bearing plate, and the surface of the bearing plate is opened with a groove.

[0017] As a further improvement of the present application, the balance block of the pull plate is set in a vertical orientation and embedded in the edge center position of the box body, and the bearing plate of the balance block is set in a parallel orientation to cover the inner bottom layer of the box body and contact the lower layer of the sensor.

[0018] Compared with the prior art, the present application has the following beneficial effects: 1. The present application is based on the resistance detection structure restrained by the slide rail arranged on the vertical plate, and after the sensor is positioned in the positioning box, the coil is exposed below the resistance detection structure, then the resistance detection structure is pulled by the slide block, and then the multimeter and the rubber block are displaced downward, so that the rubber block is inserted into the gap between the sensor and the positioning box to position it, the sensor is clamped and restrained left and right, so that the coil can be aligned with the lower end of the probe of the multimeter, then the rebound positioning effect of the rubber block of the multimeter structure can make the probe in a vertical fixed state with the clamping body of the restraint block, and then the fixed contact with the coil through the penetration state can achieve stable resistance detection, improve the detection accuracy and convenience of the detection device for the sensor resistance, and vice versa, the rubber block is separated from the inner wall position of the positioning box, the vertical spring disappears under stress and drives the multimeter to reset.

[0019] 2. After the clamping body is improved, the probe of the multimeter is vertically positioned through the cooperation of the two vertical sleeves, and then the edge of the probe is clamped by the cooperation of the upper and lower clamping sleeves, so that it can achieve the effect of fixed use and prevent tilting, and the insulating parallel block arranged outside the vertical sleeve can be reinforced vertically according to the cooperation of the two semicircular clamping frames, so that the vertical sleeve can remain on the same horizontal line, preventing the position deviation from affecting the accuracy of the vertical use of the probe of the multimeter, so that the detection accuracy of the detection device for the sensor resistance can be indirectly improved.

[0020] 3. The positioning box is improved, the lower end of the box body is magnetically attracted to the block, the connection with the base is improved, the box body outside the frame body can determine the position of the pick-up structure, the pick-up structure can be manually pulled vertically through the pull slot of the pull plate, and then the balance block and the bearing plate are pulled up, so that when the sensor is vertically embedded in the box body and the bottom of the sensor is in contact with the groove of the bearing plate, the sensor can be pulled out after detection is completed, which improves the convenience of the detection device for taking out the sensor, and avoids the difficulty of taking out the sensor after vertical positioning. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It belongs to a structure diagram of an automatic crankshaft position sensor detection device.

[0022] Figure 2 It belongs to a structure diagram of an improved resistance detection structure.

[0023] Figure 3 It belongs to a structure diagram of an improved slider.

[0024] Figure 4 It belongs to a structure diagram of an improved clamping body.

[0025] Figure 5 It belongs to a structure diagram of a vertical sleeve with components on the outer edge.

[0026] Figure 6 It belongs to a structure diagram of an improved positioning box.

[0027] Figure 7 It belongs to a structure diagram of an improved pick-up structure.

[0028] In the figure: base-1, positioning box-2, vertical plate-3, slide rail-4, resistance detection structure-5; Vertical spring-51, slider-52, fixed block-53, pull block-54, multimeter-55, rubber block-56; Center block-521, block body-522, positioning sleeve-523, welded block-524, restraining block-525, clamping body-526; Vertical sleeve-5261, upper clamping sleeve-5262, lower clamping sleeve-5263, small bolt-5264, vertical groove-5265; Insulating parallel block-611, clamping frame-612, contact layer-613; Overlapping layer-21, box body-22, magnetically attracted plate-23, plug-24, frame body-25, pick-up structure-26; Draw slot-261, draw plate-262, balance block-263, bearing plate-264, recess-265. DETAILED DESCRIPTION

[0029] The application is further described below in conjunction with the accompanying drawings: Example 1: Figures 1 to 5 As shown: The application provides a kind of automatic crankshaft position sensor detection device, Its structure includes, base 1, positioning box 2, vertical plate 3, slide rail 4, resistance detection structure 5, the upper end of the base 1 is fixedly connected with the lower end of positioning box 2 and the position of slide rail 4 is determined by vertical plate 3, slide rail 4 limits resistance detection structure 5 and resistance detection structure 5 below is communicated with positioning box 2.

[0030] Wherein, the resistance detection structure 5 is provided with vertical spring 51, the lower end of the vertical spring 51 is fixed to the upper end of sliding block 52 and the upper end is connected to the upper end position of vertical plate 3, sliding block 52 surface is loaded with fixed block 53, fixed block 53 front end is provided with pull block 54 and upper end is equipped with multimeter 55, fixed block 53 lower end edge is also connected with rubber block 56.

[0031] Wherein, the sliding block 52 is also provided with center block 521, the center block 521 is welded to the back position of block 522, the upper end of block 522 is provided with positioning sleeve 523, block 523 front end is also connected with welding block 524, the position below welding block 524 is provided with restraint block 525, the restraint block 525 contains clamping body 526.

[0032] Wherein, the sliding block 52 of resistance detection structure 5 is slid down through the slide rail 4 of vertical plate 3, at the same time, the vertical spring 51 is pulled vertically, then the multimeter 55 and rubber block 56 of fixed block 53 slide down, forcing the rubber block 56 to be embedded in the inner wall position of positioning box 2 in the distance between sensor and positioning box 2, then the probe of multimeter 55 will be vertically installed in the restraint block 525 and clamping body 526 of fixed block 53, and then vertically aligned with the coil position of sensor of positioning box 2, through the rebound positioning of rubber block 56, the coil of sensor is contacted.

[0033] Wherein, the positioning box 2 on the base 1 is set in vertical direction and is on the same vertical line with the lower end center of resistance detection structure 5, the outer edge of positioning box 2 is parallel to vertical plate 3 and the slide rail 4 of vertical plate 3 is set in vertical direction.

[0034] The upper end of the vertical spring 51 penetrates the top of the vertical plate 3 and is locked by a bolt, the slider 52 and the fixed block 53 are parallel to each other, the fixed block 53 is L-shaped to determine the position of the multimeter 55, and the rubber block 56 is provided with two blocks at the lower end edge of the fixed block 53 and is arranged in a symmetrical position.

[0035] The center block 521 is perpendicular to the block 522, the center block 521 is embedded in the vertical plate 3, the positioning sleeve 523 of the block 522 is circular and matches the shape of the lower end of the vertical spring 51, the restraint block 525 is square and carries the clamping body 526 which is inserted into the position of the fixed block 53 and overlaps the edge of the probe of the multimeter 55.

[0036] The clamping body 526 is provided with a vertical sleeve 5261, the upper and lower ends of the vertical sleeve 5261 are respectively provided with an upper clamping sleeve 5262 and a lower clamping sleeve 5263 and are locked by small bolts 5264 and the central position is penetrated by a vertical groove 5265.

[0037] The vertical sleeve 5261, the upper clamping sleeve 5262 and the lower clamping sleeve 5263 are on the same vertical center line, the upper clamping sleeve 5262 and the lower clamping sleeve 5263 are provided with four small bolts 5264 at the edges, the vertical sleeve 5261 is provided with two groups which are matched with the number of probes of the multimeter 55 and there is a safety distance between them.

[0038] The distance between the vertical sleeves 5261 is also provided with an insulating parallel block 611, the left and right ends of the insulating parallel block 611 are provided with clamping frames 612, the inner wall of the clamping frame 612 is provided with a contact layer 613 which is in contact with the outer edge of the vertical sleeve 5261.

[0039] The insulating parallel block 611 is made of rubber and is solid, the clamping frame 612 is semicircular and is arranged in a symmetrical position at the left and right ends of the insulating parallel block 611 to limit the outer edges of the two groups of vertical sleeves 5261.

[0040] The specific functions and operation processes of the embodiment are as follows: The automatic crankshaft position sensor detection device in the application can determine the position of the positioning box 2 and the vertical plate 3 through the base 1, then the vertical plate 3 determines the position of the slide rail 4, the resistance detection structure 5 is restrained through the slide rail 4, so that the lower position of the resistance detection structure 5 can be aligned with the upper end of the positioning box 2, and after the automatic crankshaft position sensor is vertically positioned in the positioning box 2, the coil will be exposed upward and communicated with the lower position of the resistance detection structure 5, then the fixed block 53 of the resistance detection structure 5 pulls the slide block 52 to move downward in the position of the slide rail 4 through the front end pull block 54 by artificial pulling, in the process, the vertical spring 51 is pulled downward, at the same time, the multimeter 54 and the rubber block 56 on the fixed block 53 are lowered, until the rubber block 56 is embedded in the positioning box 2 and located in the distance between the sensor and the inner wall of the positioning box 2, and then the sensor is centrally limited and fixed by the rebound effect, and the fixed block 53 is fixed on the upper end of the positioning box 2, then the pen of the multimeter 55 can be in a fixed vertical state combined with the restraint block 525 and the clamping body 526 of the slide block 52, and then the sensor can be accurately inserted into the sensor coil for resistance detection, and the resistance value measured is usually 200~1000Ω (for reference, see the vehicle manual), if the resistance is ∞ (open circuit) or 0Ω (short circuit), the resistance value is abnormal, after detection, the pull block 54 is manually controlled again to force the rubber block 56 to leave the positioning box 2, and the vertical spring 51 disappears under the force to rebound, and the multimeter 55 is reset upward, so that the convenience and accuracy of the resistance detection of the detection device on the sensor are improved, and when the slide block 52 slides downward in the slide rail 4, the center block 521 at the back of the block body 522 slides in the vertical plate 3, and the stability of vertical sliding is realized through the restraint of the vertical plate 3, and then the positioning sleeve 523 and the lower end of the vertical spring 51 are spliced, and the welding block 524 is embedded in the back of the fixed block 53 to improve the connection firmness of the two, and the clamping body 526 is embedded in the fixed block 53 to improve the fixing effect of the pen of the multimeter 55, and then the two groups of vertical sleeves 5261 of the clamping body 526 can improve the safety distance effect of the two through the contact layer 613 of the external insulating parallel block 611 and the clamping block 612, and the stability of vertical fixation is ensured, and then the upper clamping sleeve 5262 and the lower clamping sleeve 5263 of the vertical sleeve 5261 can be locked through the small-sized bolt 5264, and then the pen of the multimeter 55 is penetrated and clamped and limited at the edge through the vertical groove 5265, and the stability of the resistance detection of the sensor is ensured.

[0041] Embodiment 2: Figures 6 to 7 As shown: The application provides an automatic crankshaft position sensor detection device, Its structure includes, the positioning box 2 is provided with overlapping layer 21, the overlapping layer 21 is arranged at the top edge center of box 22, and the lower end of box 22 is connected with magnetic plate 23 and plug block 24, and frame 25 is further arranged at the position of the outer edge of box 22 to determine the position of taking structure 26.

[0042] Wherein, the box 22 overlaps with the lower end of the slide rail 4 through the overlapping layer 21, the lower end of the box 22 is covered by the magnetic plate 23, and the lower end of the magnetic plate 23 overlaps with the surface of the base 1 through the plug block 24, the frame 25 is rectangular in shape, and the taking structure 26 moves in a vertical orientation.

[0043] Wherein, the taking structure 26 is further provided with a pull slot 261, the pull slot 261 is opened in the middle upper position of the pull plate 262, the pull plate 262 is loaded with a balance block 263, and the lower end of the balance block 263 is arranged with a bearing plate 264, and the surface of the bearing plate 264 is provided with a groove 265.

[0044] Wherein, the balance block 263 of the pull plate 262 is arranged in a vertical orientation and embedded in the edge center position of the box 22, and the bearing plate 264 of the balance block 263 is arranged in a parallel orientation to cover the inner bottom layer of the box 22 and contact the lower layer of the sensor.

[0045] The specific functions and operation processes of the embodiment are as follows: In the present application, the box 22 of the positioning box 2 can overlap with the lower end of the slide rail 4 through the overlapping layer 21 at the upper end edge, so as to effectively improve the vertical alignment degree of the box 22 and the resistance detection structure 5, then the magnetic plate 23 at the lower end of the box 22 can be firmly installed on the base 1 in combination with the plug block 24, thereby improving the matching stability with the resistance detection structure 5, and the frame 25 outside the box 22 can limit the position of the taking structure 26, so that after the sensor is positioned in the positioning box 2, the bottom thereof will contact the groove 265 of the bearing plate 264 of the taking structure 26, then after detection is completed, the pull slot 261 of the taking structure 26 is manually controlled, so that the bearing plate 264 of the balance block 263 can be vertically carried to slide upward, and the sensor is ejected from the box 22, thereby achieving the effect of convenient taking, further improving the convenience of taking after sensor detection, and preventing the sensor from being difficult to take out due to the volume thereof, and in the taking process, the balance block 263 of the pull plate 262 vertically slides in the edge of the box 22, so that the bearing plate 264 can slide upward in a parallel state in the box 22, thereby achieving the effect of rapid taking.

[0046] The technical solutions of the present application or the technical solutions of the present application are used as inspiration by those skilled in the art to design similar technical solutions to achieve the above technical effects, which are within the protection scope of the present application.

Claims

1. An automated crankshaft position sensor detection device, comprising: A base (1), a positioning box (2), a vertical plate (3), a slide rail (4), and a resistance detection structure (5), wherein the upper end of the base (1) is fixedly connected to the lower end of the positioning box (2) and the position of the slide rail (4) is determined by the vertical plate (3), the slide rail (4) defines the resistance detection structure (5), and the lower part of the resistance detection structure (5) is in communication with the positioning box (2), characterized in that: The resistance detection structure (5) is provided with a vertical spring (51), the lower end of the vertical spring (51) is fixed to the upper end of the slider (52) and the upper end is connected to the upper end position of the vertical plate (3), the surface of the slider (52) is equipped with a fixed block (53), the front end of the fixed block (53) is provided with a pull block (54) and the upper end is equipped with a multimeter (55), and the lower end edge of the fixed block (53) is also connected to a rubber block (56); The slider (52) is further provided with a center block (521), the center block (521) being welded to the back of the block (522), a positioning sleeve (523) being provided at the upper end of the block (522), a welding block (524) being connected to the front end of the block (523), a restraining block (525) being provided below the welding block (524), and a clamping body (526) being included in the restraining block (525); The slider (52) of the resistance detection structure (5) is made to slide down through the slide rail (4) of the vertical plate (3), and the vertical spring (51) is pulled vertically. Then the multimeter (55) and the rubber block (56) of the fixed block (53) are made to slide down, forcing the rubber block (56) to be embedded in the inner wall of the positioning box (2) in the gap between the sensor and the positioning box (2). Then, the probe of the multimeter (55) is vertically installed in the restraining block (525) and the clamping body (526) of the fixed block (53), and then vertically aligned with the coil position of the sensor of the positioning box (2), and contacted with the coil of the sensor through the rebound positioning of the rubber block (56).

2. The automatic crankshaft position sensor detection device according to claim 1, characterized in that: The positioning box (2) on the base (1) is set in a vertical orientation and is on the same vertical line as the center of the lower end of the resistance detection structure (5). The outer edge of the positioning box (2) is parallel to the vertical plate (3), and the slide rail (4) of the vertical plate (3) is set in a vertical orientation.

3. The automatic crankshaft position sensor detection device according to claim 1, characterized in that: The upper end of the vertical spring (51) penetrates the top of the vertical plate (3) and is locked by a bolt. The slider (52) and the outer portion of the fixed block (53) are parallel to each other and the fixed block (53) is in an "L" shape to determine the position of the multimeter (55). Two rubber blocks (56) are provided at the lower edge of the fixed block (53) and are set in a symmetrical orientation.

4. The automatic crankshaft position sensor detection device according to claim 1, characterized in that: The center block (521) and the block body (522) are perpendicular to each other and the center block (521) is embedded in the vertical plate (3). The positioning sleeve (523) of the block body (522) is circular in shape and matches the shape of the lower end of the vertical spring (51). The restraining block (525) is square in shape and carries a clamping body (526) inserted into the fixed block (53) to overlap with the edge of the test lead of the multimeter (55).

5. The automatic crankshaft position sensor detection device according to claim 1, characterized in that: The clamping body (526) is provided with a vertical sleeve (5261), and the upper and lower ends of the vertical sleeve (5261) are respectively provided with an upper sleeve (5262) ​​and a lower sleeve (5263) and are locked by a small bolt (5264) and the center position is penetrated by a vertical groove (5265); The vertical sleeve (5261) is located on the same vertical center line as the upper jacket (5262) ​​and the lower jacket (5263). Four small bolts (5264) are provided on the edges of the upper jacket (5262) ​​and the lower jacket (5263). The vertical sleeve (5261) is provided with two groups of probes that are adapted to the number of probes of the multimeter (55) and have a safety distance between them.

6. The automatic crankshaft position sensor detection device according to claim 5, characterized in that: An insulating parallel block (611) is further provided between the intervals of the vertical sleeve (5261), and a clamping frame (612) is provided at both ends of the insulating parallel block (611). A contact layer (613) is provided on the inner wall of the clamping frame (612) and contacts the outer edge of the vertical sleeve (5261). The insulating parallel block (611) is made of rubber and is solid. The clamping frame (612) is semicircular and is symmetrically positioned at the left and right ends of the insulating parallel block (611) to define the outer edges of the two sets of vertical sleeves (5261).

7. The automatic crankshaft position sensor detection device according to claim 1, characterized in that: The positioning box (2) is provided with an overlapping layer (21), the overlapping layer (21) is arranged at the center of the top edge of the box body (22), and the lower end of the box body (22) is connected to a magnetic plate (23) and an insert (24), and a frame (25) is also provided at the outer edge position of the box body (22) to determine the position of the pickup structure (26); The box (22) overlaps with the lower end of the slide rail (4) through the overlapping layer (21), the lower end of the box (22) is covered by the magnetic plate (23), and the lower end of the magnetic plate (23) is parallel to the surface of the base (1) through the insert (24), and the frame (25) is rectangular and allows the picking structure (26) to move in a vertical direction.

8. The automatic crankshaft position sensor detection device according to claim 7, characterized in that: The picking structure (26) is further provided with a drawing groove (261), the drawing groove (261) being opened at the upper middle position of the drawing plate (262), a balancing block (263) being mounted on the surface of the drawing plate (262), and a bearing plate (264) being arranged at the lower end of the balancing block (263), and a groove (265) being opened on the surface of the bearing plate (264); The balance block (263) of the pull plate (262) is set in a vertical orientation and embedded in the center position of the edge of the box (22), and the supporting plate (264) of the balance block (263) is set in a parallel orientation to cover the bottom layer inside the box (22) and contact the lower layer of the sensor.

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