Auxiliary measuring device

Abstract

The utility model discloses an auxiliary measuring device which is used for an H point measuring device and comprises a fixed support, a clamping jaw and a first measuring plate, the clamping jaw is arranged at one end of the fixed support in the length direction, and the clamping jaw is rotatably clamped on a fixed shaft where an H point of the H point measuring device is located; the first measuring plate is arranged at one end of the fixing support deviating from the clamping jaw, the first measuring plate is provided with a horizontal reference plane and a first mark point, and a plane formed by a connecting line of the first mark point and the H point and the axis of the fixing shaft where the H point is located is parallel to the horizontal reference plane. According to the auxiliary measuring device provided by the utility model, the first mark point is arranged, and the distance between the first mark point and the position needing to be measured in the horizontal direction and the distance between the first mark point and the position needing to be measured in the vertical direction are measured by using the measuring tool, so that the position relationship between the position needing to be measured and the H point is obtained; the work of scanning a position needing to be measured and an H point and subsequent data processing can be omitted, and the total investment of professionals and professional equipment is saved.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of measuring tools, in particular to an auxiliary measuring device. Background Art

[0002] In the prior art, the H point is used as a vehicle-level design reference point and is widely used in the fields of vehicle layout, ergonomics, seat design, steering wheel design, three-pedal layout, etc. The HPM three-dimensional H point device is an internationally used H point measurement device. The distance measurement between the H point and other parts is generally performed by scanning the HPM with a point / surface scanning device and then inputting it into a computer for processing. It is impossible to directly measure the distance between the H point and the steering wheel, pedals, ground, carpet and other positions. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an auxiliary measurement device, which can avoid the need for scanning of measurement positions and H points and subsequent data processing, saving the total investment of professionals and professional equipment.

[0004] According to an embodiment of the utility model, the auxiliary measuring device is used for an H-point measuring device and includes a fixed bracket, a clamping claw and a first measuring plate. The clamping claw is arranged at one end of the fixed bracket in the length direction, and the clamping claw is rotatably clamped on the fixed axis where the H point of the H-point measuring device is located; the first measuring plate is arranged at one end of the fixed bracket away from the clamping claw, and a horizontal reference plane and a first marking point are provided on the first measuring plate. The plane formed by the line connecting the first marking point and the H point and the axis of the fixed axis where the H point is located is parallel to the horizontal reference plane.

[0005] According to the auxiliary measuring device of the embodiment of the utility model, by rotating the claws to make the horizontal reference plane parallel to the horizontal plane, the plane formed by the line connecting the first mark point and the H point and the axis of the fixed shaft where the H point is located is parallel to the horizontal plane, and the horizontal distance between the first mark point and the H point and the vertical distance between the first mark point and the H point are fixed. The positional relationship between the position to be measured and the H point can be obtained by setting the first mark point and using a measuring tool to measure the horizontal distance between the first mark point and the position to be measured and the vertical distance between the first mark point and the position to be measured, which can avoid the work of scanning the position to be measured and the H point and subsequent data processing, saving the total investment of professionals and professional equipment.

[0006] In some embodiments of the utility model, the auxiliary measuring device also includes a second measuring plate, which is arranged on the fixed bracket. Along the length direction of the fixed bracket, the second measuring plate is spaced apart from the clamping claw and the first measuring plate. A second marking point is provided on the second measuring plate. The first marking point, the second marking point and the H point are in the same plane, and the second marking point is located on one side of the line connecting the first marking point and the H point.

[0007] In some embodiments of the present invention, the second measuring plate includes a base and a plate body, the base is disposed on the fixing bracket and connected to the fixing bracket; the plate body is disposed on the base, and the plate body is perpendicular to the horizontal reference plane.

[0008] In some embodiments of the utility model, along the length direction of the fixed bracket, the fixed bracket includes a first bracket portion and a second bracket portion, one end of the first bracket portion is connected to one end of the second bracket portion and the first bracket portion and the second bracket portion are at an angle to each other, the claw is connected to an end of the first bracket portion away from the second bracket portion, and the first measuring plate is connected to an end of the second bracket portion away from the first bracket portion.

[0009] In some embodiments of the utility model, along the width direction of the fixed bracket, the fixed bracket includes a first plate body and a second plate body, the first plate body and the second plate body are arranged at an interval, the first measurement plate is arranged between the first plate body and the second plate body and is fixedly connected to both the first plate body and the second plate body; the second measurement plate is arranged between the first plate body and the second plate body and is fixedly connected to both the first plate body and the second plate body.

[0010] In some embodiments of the present invention, the auxiliary measuring device further includes a height adjusting device, which is disposed on the fixed bracket and is used to adjust the angle between the horizontal reference plane and the horizontal plane.

[0011] In some embodiments of the utility model, the height measuring device includes a fixing part and a screw, the fixing part is fixed on the fixing bracket, and the fixing part is provided with a threaded hole; the screw is passed through the threaded hole, the screw and the line connecting the first marking point and the H point form an angle with each other, and one end of the screw in the length direction is suitable for abutting against the surface of the H-point measuring device.

[0012] In some embodiments of the present invention, a level is provided on the horizontal reference plane.

[0013] In some embodiments of the present invention, the level includes a first level and a second level, the first level is parallel to a line connecting the first marking point and the H point; the second level is perpendicular to the first level.

[0014] In some embodiments of the present invention, a plurality of weight-reducing holes are provided on the fixing bracket, and the plurality of weight-reducing holes are arranged at intervals along the length direction of the fixing bracket.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 is a three-dimensional diagram of an auxiliary measuring device according to an embodiment of the utility model;

[0018] Figure 2 is a stereogram of an auxiliary measuring device and an H-point measuring device according to an embodiment of the utility model;

[0019] Figure 3 is a side view of an auxiliary measuring device and an H-point measuring device according to an embodiment of the utility model;

[0020] Figure 4 It is a top view of an auxiliary measuring device and an H-point measuring device according to an embodiment of the utility model.

[0021] Reference numerals:

[0022] 100. Auxiliary measuring devices;

[0023] 1. Fixed bracket; 11. First bracket part; 12. Second bracket part; 13. First plate body; 14. Second plate body; 15. Weight reduction hole;

[0024] 2. Claws;

[0025] 3. First measuring plate; 31. Horizontal reference plane; 32. First marking point;

[0026] 4. second measuring plate; 41. base; 42. plate body; 421. second marking point;

[0027] 5. Height adjustment device; 51. Fixing member; 52. Screw;

[0028] 6. Level; 61. First level; 62. Second level;

[0029] 200. H-point measuring device; 201. Fixed axis. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Reference below Figure 1-Figure 4 An auxiliary measurement device 100 according to an embodiment of the present invention is described.

[0034] like Figure 1 As shown, the auxiliary measuring device 100 according to the embodiment of the utility model comprises a fixing bracket 1 , a clamping claw 2 and a first measuring plate 3 .

[0035] Specifically, Figure 1 and Figure 4As shown, the auxiliary measuring device 100 is used for the H-point measuring device 200, and the H-point refers to the hinge center of the torso and thigh of the H-point measuring device 200, and the H-point of the vehicle seat refers to the intersection of the torso line and the center line of the thigh of the H-point measuring device 200. The H-point plays a very important role in the development process of vehicle cabin products. It is not only related to the rationality and comfort of the passenger space, but also has a direct impact on the design of components such as the vehicle size, cabin interior layout, and restraint system. Therefore, how to more accurately verify the deviation between the actual H-point and the design value is of great significance to the timely correction of product development and has an important impact on the subsequent design of the product. The H-point measuring device 200 can indicate the location of the H-point.

[0036] In the prior art, the H point is used as a vehicle-level design reference point and is widely used in the fields of vehicle layout, ergonomics, seat design, steering wheel design, three-pedal layout, etc. The HPM three-dimensional H point device is an internationally used H point measurement device. The distance measurement between the H point and other parts is generally performed by scanning the HPM with a point / surface scanning device and then inputting it into a computer for processing. It is impossible to directly measure the distance between the H point and the steering wheel, pedals, ground, carpet and other positions.

[0037] like Figure 1 , Figure 3 and Figure 4 As shown, the claw 2 is arranged in the length direction of the fixed bracket 1 (such as Figure 3 At one end of the H-point measuring device 200 (in the direction a shown in the figure), the claw 2 can be rotatably clamped on the fixed shaft 201 where the H-point is located, and the auxiliary measuring device 100 can be connected to the fixed shaft 201 where the H-point is located through the claw 2. The connection between the auxiliary measuring device 100 and the fixed shaft 201 where the H-point is located is relatively simple.

[0038] The first measuring plate 3 is arranged at the end of the fixed support 1 away from the clamping claw 2. The first measuring plate 3 is provided with a horizontal reference plane 31 and a first marking point 32. The plane formed by the line connecting the first marking point 32 and the point H and the axis of the fixed shaft 201 where the point H is located is parallel to the horizontal reference plane 31. When the clamping claw 2 rotates until the horizontal reference plane 31 is parallel to the horizontal plane, the plane formed by the line connecting the first marking point 32 and the point H and the axis of the fixed shaft 201 where the point H is located is parallel to the horizontal plane. The horizontal direction of the first marking point 32 and the point H (such as Figure 3 The distance between the first marking point 32 and the vertical direction of point H (as shown in the a direction) is fixed. Figure 3 The distance in the b direction) is 0.

[0039] By measuring the horizontal distance between the first marking point 32 and the position to be measured and the vertical distance between the first marking point 32 and the position to be measured, when the position to be measured is closer to point H than the first marking point 32 in the horizontal direction, the horizontal distance between the position to be measured and point H is equal to the horizontal distance between the first marking point 32 and point H minus the horizontal distance between the first marking point 32 and the position to be measured; when the position to be measured is farther from point H than the first marking point 32 in the horizontal direction, the horizontal distance between the position to be measured and point H is equal to the horizontal distance between the first marking point 32 and point H plus the horizontal distance between the first marking point 32 and the position to be measured; the vertical distance between the position to be measured and point H is equal to the vertical distance between the first marking point 32 and the position to be measured.

[0040] The positional relationship between the position to be measured and point H can be obtained by setting a first marking point 32 and measuring the horizontal distance between the first marking point 32 and the position to be measured and the vertical distance between the first marking point 32 and the position to be measured using a measuring tool. This can eliminate the need for scanning the position to be measured and point H and subsequent data processing, thereby saving the total investment in professionals and professional equipment.

[0041] According to the auxiliary measuring device 100 of the embodiment of the utility model, by rotating the claw 2 until the horizontal reference plane 31 is parallel to the horizontal plane, the plane formed by the line connecting the first marking point 32 and the H point and the axis of the fixed shaft 201 where the H point is located is parallel to the horizontal plane, and the horizontal distance between the first marking point 32 and the H point and the vertical distance between the first marking point 32 and the H point are fixed. The positional relationship between the position to be measured and the H point can be obtained by setting the first marking point 32 and using a measuring tool to measure the horizontal distance between the first marking point 32 and the position to be measured and the vertical distance between the first marking point 32 and the position to be measured, which can avoid the work of scanning the position to be measured and the H point and subsequent data processing, saving the total investment of professionals and professional equipment.

[0042] In some embodiments of the present invention, Figure 1 and Figure 2As shown, the auxiliary measuring device 100 also includes a second measuring plate 4, which is arranged on the fixed bracket 1. Along the length direction of the fixed bracket 1, the second measuring plate 4 is spaced apart from the clamping claw 2 and the first measuring plate 3. A second marking point 421 is provided on the second measuring plate 4. The first marking point 32, the second marking point 421 and the point H are in the same plane, and the second marking point 421 is located on one side of the line connecting the first marking point 32 and the point H. When the clamping claw 2 rotates until the horizontal reference plane 31 is parallel to the horizontal plane, the plane formed by the line connecting the first marking point 32 and the point H and the axis of the fixed shaft 201 where the point H is located is parallel to the horizontal plane, the horizontal distance between the second marking point 421 and the point H is fixed, and the vertical distance between the second marking point 421 and the point H is fixed.

[0043] It is understandable that if Figure 1 and Figure 3 As shown, by measuring the horizontal distance between the second marking point 421 and the position to be measured and the vertical distance between the second marking point 421 and the position to be measured, when the position to be measured in the horizontal direction is closer to the H point than the second marking point 421, the horizontal distance between the position to be measured and the H point is equal to the horizontal distance between the second marking point 421 and the H point minus the horizontal distance between the second marking point 421 and the position to be measured; when the position to be measured in the horizontal direction is farther from the H point than the second marking point 421, the horizontal distance between the position to be measured and the H point is equal to the horizontal distance between the second marking point 421 and the H point. The distance between the second marking point 421 and the position to be measured is added to the horizontal distance between the second marking point 421 and the position to be measured; when the position to be measured in the vertical direction is closer to the H point than the second marking point 421, the vertical distance between the position to be measured and the H point is equal to the vertical distance between the second marking point 421 and the H point minus the vertical distance between the second marking point 421 and the position to be measured; when the position to be measured in the vertical direction is farther away from the H point than the second marking point 421, the vertical distance between the position to be measured and the H point is equal to the vertical distance between the second marking point 421 and the H point plus the vertical distance between the second marking point 421 and the position to be measured.

[0044] The positional relationship between the position to be measured and point H can be obtained by setting a second marking point 421 and using a measuring tool to measure the horizontal distance between the second marking point 421 and the position to be measured and the vertical distance between the second marking point 421 and the position to be measured. This can eliminate the need for scanning the position to be measured and point H and subsequent data processing, thereby saving the total investment in professionals and professional equipment.

[0045] In addition, if Figure 1 and Figure 3As shown, one of the first marking point 32 and the second marking point 421 that is closer to the position to be measured can be selected for measurement according to the distance between the position to be measured and the first marking point 32 and the second marking point 421, so that the measurement of the position to be measured is more reliable. At the same time, the distance between the position to be measured and the first marking point 32 and the second marking point 421 can be measured simultaneously to obtain two sets of data, thereby increasing the reliability of the measurement of the position to be measured.

[0046] In this embodiment, the horizontal distance between the first marking point 32 and the H point is 600 mm, the horizontal distance between the second marking point 421 and the H point is 270 mm, and the vertical distance between the second marking point 421 and the H point is 250 mm.

[0047] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the second measuring plate 4 includes a base 41 and a plate body 42, the base 41 is arranged on the fixed bracket 1 and connected to the fixed bracket 1, the plate body 42 is arranged on the base 41, the plate body 42 is perpendicular to the horizontal reference plane 31, and a certain distance is set between the plate body 42 and the fixed bracket 1, and a second marking point 421 is arranged on the plate body 42. The second marking point 421 is convenient for measuring the position to be measured, reducing the contact with the fixed bracket 1 during the measurement process, avoiding the fixed bracket 1 from being compressed and deformed, and avoiding inaccurate measurement results.

[0048] In some embodiments of the present invention, Figure 1 As shown, along the length direction of the fixed bracket 1, the fixed bracket 1 includes a first bracket portion 11 and a second bracket portion 12, one end of the first bracket portion 11 is connected to one end of the second bracket portion 12, and the first bracket portion 11 and the second bracket portion 12 are at an angle to each other, so that the first bracket portion 11 and the second bracket portion 12 can be spaced apart from the bottom surface of the H-point measuring device 200, which is convenient for the installation of the auxiliary measuring device 100. The claw 2 is connected to one end of the first bracket portion 11 away from the second bracket portion 12, and the first measuring plate 3 is connected to one end of the second bracket portion 12 away from the first bracket portion 11. The first measuring plate 3 is spaced apart from the claw 2, and the first measuring plate 3 can extend out of the area surrounded by the H-point measuring device 200, which is convenient for the connection of the measuring tool with the first measuring plate 3.

[0049] In some embodiments of the present invention, Figure 1 and Figure 2As shown, along the width direction of the fixing bracket 1, the fixing bracket 1 includes a first plate body 13 and a second plate body 14, and the first plate body 13 and the second plate body 14 are arranged at intervals. The first measuring plate 3 is arranged between the first plate body 13 and the second plate body 14 and is fixedly connected to both the first plate body 13 and the second plate body 14; the second measuring plate 4 is arranged between the first plate body 13 and the second plate body 14 and is fixedly connected to both the first plate body 13 and the second plate body 14. The connection between the first measuring plate 3 and the first plate body 13 and the second plate body 14 is relatively simple and reliable, and the connection between the second measuring plate 4 and the first plate body 13 and the second plate body 14 is relatively simple and reliable, and a gap is provided between the first plate body 13 and the second plate body 14, so that the weight of the fixing bracket 1 is relatively light.

[0050] In some embodiments of the present invention, Figure 1 As shown, the auxiliary measuring device 100 further includes a height adjustment device 5, which is disposed on the fixed bracket 1 and is used to adjust the angle between the horizontal reference plane 31 and the horizontal plane. After the claw 2 is engaged with the fixed shaft 201 where the H point of the H point measuring device 200 is located, the height adjustment device 5 adjusts the horizontal reference plane 31 and the horizontal plane to a parallel position, and the height adjustment device 5 can abut against the H point measuring device 200, thereby increasing the reliability of the installation of the auxiliary measuring device 100.

[0051] Furthermore, if Figure 1 As shown, the height measuring device includes a fixing member 51 and a screw rod 52. The fixing member 51 is fixed on the fixing bracket 1. The fixing member 51 is provided with a threaded hole. The screw rod 52 is inserted into the threaded hole. The length adjustment of the screw rod 52 is relatively simple, and the adjustment of the angle between the horizontal reference plane 31 and the horizontal plane is relatively simple. The screw rod 52 and the line connecting the second marking point 421 and the H point form an angle with each other. One end of the screw rod 52 in the length direction is suitable for abutting against the surface of the H point measuring device 200, thereby increasing the reliability of the installation of the auxiliary measuring device 100.

[0052] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, a level meter 6 is provided on the horizontal reference plane 31, and the level meter 6 can indicate whether the horizontal reference plane 31 is in a horizontal state, so that the position adjustment of the auxiliary measurement device 100 is easier to observe.

[0053] Furthermore, if Figure 1As shown, the level 6 includes a first level 61 and a second level 62. The first level 61 is parallel to the line connecting the second mark point 421 and the H point. When the first level 61 indicates horizontal, the line connecting the second mark point 421 and the H point is parallel to the horizontal plane. The second level 62 is perpendicular to the first level 61. When the first level 61 indicates horizontal and the second level 62 indicates horizontal, the horizontal reference plane 31 is parallel to the horizontal plane. This makes it easier to observe the horizontal state of the horizontal reference plane 31.

[0054] In some embodiments of the present invention, Figure 1 and Figure 3 As shown, the fixing bracket 1 is provided with a plurality of weight-reducing holes 15 , which are spaced apart along the length direction of the fixing bracket 1 , so that the fixing bracket 1 is lighter and the manufacturing material of the fixing bracket 1 is less.

[0055] Other structures and operations of the auxiliary measurement device 100 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0056] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0057] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An auxiliary measuring device, characterized in that: For use in H-point measurement devices and comprising: Fixed bracket; A claw, the claw being arranged at one end of the fixed bracket in the length direction, and the claw being rotatably clamped on a fixed shaft where the H point of the H point measuring device is located; A first measuring plate, wherein the first measuring plate is arranged at one end of the fixed bracket away from the clamping claw, a horizontal reference plane and a first marking point are arranged on the first measuring plate, and a plane formed by a line connecting the first marking point and the H point and an axis line of the fixed shaft where the H point is located is parallel to the horizontal reference plane.

2. The auxiliary measurement device according to claim 1, characterized in that: Also includes: A second measuring plate, the second measuring plate is arranged on the fixed bracket, along the length direction of the fixed bracket, the second measuring plate is spaced apart from the clamping claw and the first measuring plate, a second marking point is arranged on the second measuring plate, the first marking point, the second marking point and the H point are in the same plane, and the second marking point is located on one side of the line connecting the first marking point and the H point.

3. The auxiliary measurement device according to claim 2, characterized in that: The second measurement board comprises: A base, the base is disposed on the fixing bracket and connected to the fixing bracket; A plate body is disposed on the base, and the plate body is perpendicular to the horizontal reference plane.

4. The auxiliary measurement device according to claim 2, characterized in that: Along the length direction of the fixed bracket, the fixed bracket includes a first bracket part and a second bracket part, one end of the first bracket part is connected to one end of the second bracket part and the first bracket part and the second bracket part form an angle with each other, the claw is connected to an end of the first bracket part away from the second bracket part, and the first measurement plate is connected to an end of the second bracket part away from the first bracket part.

5. The auxiliary measurement device according to claim 2, characterized in that: Along the width direction of the fixing bracket, the fixing bracket includes a first plate body and a second plate body, and the first plate body and the second plate body are arranged at an interval. The first measuring plate is disposed between the first plate body and the second plate body and is fixedly connected to both the first plate body and the second plate body; The second measuring plate is disposed between the first plate body and the second plate body and is fixedly connected to both the first plate body and the second plate body.

6. The auxiliary measurement device according to claim 1, characterized in that: Also includes: A height adjustment device is provided on the fixing bracket and is used for adjusting the angle between the horizontal reference plane and the horizontal plane.

7. The auxiliary measurement device according to claim 6, characterized in that: The height adjustment device comprises: A fixing member, the fixing member is fixed on the fixing bracket, and the fixing member is provided with a threaded hole; A screw rod is inserted into the threaded hole, the screw rod and the line connecting the first marking point and the H point form an angle with each other, and one end of the screw rod in the length direction is suitable for abutting against the surface of the H point measuring device.

8. The auxiliary measurement device according to claim 1, characterized in that: A level is provided on the horizontal reference plane.

9. The auxiliary measurement device according to claim 8, characterized in that: The level instrument comprises: a first level, wherein the first level is parallel to a line connecting the first marking point and the H point; A second level, wherein the second level is perpendicular to the first level.

10. The auxiliary measurement device according to claim 1, characterized in that: The fixing bracket is provided with a plurality of weight-reducing holes, and the plurality of weight-reducing holes are arranged at intervals along the length direction of the fixing bracket.

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