Positioning tool for adjusting installation of automobile front cover lock

Abstract

The utility model discloses a positioning tool for automobile front cover lock adjustment installation, include: tool support, left locating block, first left and right adjusting component, right locating block, second left and right adjusting component, lower locating block and up and down adjusting component, tool support includes left side plate, right side plate and lower side plate, left locating block is located right side plate's right side, and left locating block forms the connection through first left and right adjusting component with left side plate, right locating block is located right side plate's left side, and right locating block forms the connection through second left and right adjusting component with right side plate, lower locating block is located lower side plate's top, and lower locating block forms the connection through up and down adjusting component with lower side plate. Can realize the adjustment to the up and down position of front cover lock relative water tank frame. Avoid the clearance difference problem caused by installation deviation, improve the whole car appearance quality and assembly consistency.

Description

Technical Field

[0001] This utility model relates to the automotive field, and in particular to a positioning tool for adjusting and installing a car hood lock. Background Technology

[0002] Due to certain manufacturing errors in the body's external components and stamped parts, these errors inevitably accumulate and are transmitted during the body assembly process. At the same time, there are also manufacturing errors in the body manufacturing process, which cause the final body assembly dimensions to deviate from the design values. Additionally, there are certain fluctuations in the final assembly parts. The combined effect of these factors will cause the matching dimensions of the gap surface difference between the hood and the fender, the hood and the headlight, and the hood and the front bumper to fail to meet the quality standards. Utility Model Content

[0003] Therefore, a positioning fixture is needed for adjusting and installing the hood lock on a car, so as to adjust the position of the hood lock on the water tank frame.

[0004] To achieve the above objectives, the inventors provide a positioning fixture for adjusting and installing a car hood lock, comprising: a fixture bracket, a left positioning block, a first left-right adjustment component, a right positioning block, a second left-right adjustment component, a lower positioning block, and an up-down adjustment component;

[0005] The tooling bracket includes a left side plate, a right side plate, and a lower side plate;

[0006] The left positioning block is located to the right of the left side plate. The left positioning block is connected to the left side plate through the first left and right adjustment component. The first left and right adjustment component is used to adjust the distance between the left positioning block and the left side plate.

[0007] The right positioning block is located to the left of the right side plate. The right positioning block is connected to the right side plate through the second left and right adjustment component. The second left and right adjustment component is used to adjust the distance between the right positioning block and the right side plate.

[0008] The lower positioning block is located above the lower side plate. The left side plate, the left positioning block, the lower positioning block, the right positioning block, and the right side plate are arranged sequentially in the left-right direction. The lower positioning block is connected to the lower side plate through the up-down adjustment component, which is used to adjust the distance between the lower positioning block and the lower side plate.

[0009] Further: the first left-right adjustment assembly includes a first shim group and a first connecting assembly. The first shim group includes multiple first shims sandwiched between the left positioning block and the left side plate. The first connecting assembly is used to connect the first shim group, the left positioning block, and the left side plate; and / or,

[0010] The second left-right adjustment assembly includes a second shim group and a second connecting assembly. The second shim group includes multiple second shims sandwiched between the right positioning block and the right side plate. The second connecting assembly is used to connect the second shim group, the right positioning block, and the right side plate; and / or,

[0011] The up-down adjustment assembly includes a third gasket group and a third connecting assembly. The third gasket group includes multiple third gaskets sandwiched between the lower positioning block and the lower side plate. The third connecting assembly is used to connect the third gasket group, the lower positioning block, and the lower side plate.

[0012] Furthermore: the thickness of the multiple first gaskets may be the same or different; and / or,

[0013] Multiple second gaskets may have the same or different thicknesses; and / or,

[0014] Multiple third gaskets may have the same or different thicknesses.

[0015] Further: The first connecting assembly includes a first locating pin and a first screw. The first screw passes through the left locating block and multiple first washers in the left-right direction and is screwed into the left side plate. The first screw does not protrude from the right surface of the left locating block. The first locating pin passes through the left locating block and multiple first washers in the left-right direction and is inserted into the left side plate. The first locating pin does not protrude from the right surface of the left locating block. The first locating pin is interference-fitted with the left locating block and the left side plate.

[0016] Furthermore, the first gasket is provided with a plurality of first slots, the first slots extending upward from the lower surface of the first gasket to the middle, the first slots being for the first locating pin or the first screw to pass through.

[0017] Further: The second connecting assembly includes a second locating pin and a second screw. The second screw passes through the right locating block and multiple second washers in the left-right direction and is screwed into the right side plate. The second screw does not protrude from the left surface of the right locating block. The second locating pin passes through the right locating block and multiple second washers in the left-right direction and is inserted into the right side plate. The second locating pin does not protrude from the left surface of the right locating block. The second locating pin is interference-fitted with the right locating block and the right side plate.

[0018] Furthermore, the second gasket is provided with a plurality of second slots, the second slots extending upward from the lower surface of the second gasket to the middle, the second slots being for the second locating pin or the second screw to pass through.

[0019] Further: The third connecting assembly includes a third locating pin and a third screw. The third screw passes through the lower locating block and multiple third washers in the vertical direction and is screwed into the lower side plate. The third screw does not protrude from the upper surface of the lower locating block. The third locating pin passes through the lower locating block and multiple third washers in the vertical direction and is inserted into the lower side plate. The third locating pin does not protrude from the upper surface of the lower locating block. The third locating pin is interference-fitted with the lower locating block and the lower side plate.

[0020] Furthermore, the third gasket is provided with a plurality of third slots, which extend from the front surface of the third gasket to the middle, and the third slots are for the third locating pin or the third screw to pass through.

[0021] Unlike existing technologies, the above technical solution has the following beneficial effects:

[0022] The left, right, and lower positioning blocks limit the radiator frame from three directions (left, right, and down). By operating the first and second left-right adjustment components, the positions of the left and right positioning blocks relative to the left and right side panels can be adjusted, thus adjusting the left-right position of the hood lock relative to the radiator frame. Adjusting the height of the lower positioning block using the up-down adjustment components allows for adjustment of the up-down position of the hood lock relative to the radiator frame. This avoids gap and surface differences caused by installation deviations, improving the overall vehicle appearance quality and assembly consistency.

[0023] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0024] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this utility model and other related contents, and should not be considered as limitations on this application.

[0025] Figure 1 This is one of the perspective views of the positioning fixture described in this embodiment;

[0026] Figure 2 This is the second perspective view of the positioning fixture described in this embodiment;

[0027] Figure 3 This is an exploded view of the positioning fixture described in this embodiment;

[0028] Figure 4This is a perspective view of the tooling bracket described in this embodiment;

[0029] Figure 5 This is an exploded view of the up-down adjustment component described in this embodiment.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Tooling bracket;

[0032] 11. Left side panel; 12. Right side panel; 13. Lower side panel; 14. Rear side panel;

[0033] 2. Left positioning block;

[0034] 3. First left-right adjustment assembly; 31. First washer; 311. First slot; 32. First positioning pin; 33. First screw;

[0035] 4. Right positioning block;

[0036] 5. Second left / right adjustment assembly; 51. Second washer; 511. Second slot; 52. Second positioning pin; 53. Second screw;

[0037] 6. Lower positioning block;

[0038] 7. Up and down adjustment assembly; 71. Third washer; 711. Third slot; 72. Third locating pin; 73. Third screw. Detailed Implementation

[0039] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0040] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0041] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0042] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0043] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0044] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar open-ended expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0045] As understood in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0046] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0047] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral arrangement; it can be a direct connection or an indirect connection through an intermediate medium; it can be a relationship of two components combined together, an interaction relationship between two components, or a connection within two structures. Those skilled in the art to which this application pertains can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0048] Please see Figures 1 to 5 This embodiment provides a positioning fixture for adjusting and installing a car hood lock, including: a fixture bracket 1, a left positioning block 2, a first left-right adjustment component 3, a right positioning block 4, a second left-right adjustment component 5, a lower positioning block 6, and an up-down adjustment component 7;

[0049] The tooling bracket 1 includes a left side plate 11, a right side plate 12 and a lower side plate 13, forming a basic frame structure. This frame is used to support the entire positioning tooling and serves as the mounting base for various adjustment components and positioning blocks.

[0050] The left positioning block 2 is located to the right of the left side plate 11. The left positioning block 2 is connected to the left side plate 11 through the first left and right adjustment component 5. The first left and right adjustment component 3 is used to adjust the distance between the left positioning block 2 and the left side plate 11.

[0051] The right positioning block 4 is located to the left of the right side plate 12. The right positioning block 4 is connected to the right side plate 12 through the second left and right adjustment component 5. The second left and right adjustment component 5 is used to adjust the distance between the right positioning block 4 and the right side plate 12.

[0052] The lower positioning block 6 is located above the lower side plate 13. The left side plate 11, left positioning block 2, lower positioning block 6, right positioning block 4, and right side plate 12 are arranged in sequence along the left and right direction. The lower positioning block 6 is connected to the lower side plate 13 through the up-down adjustment component 7. The up-down adjustment component 7 is used to adjust the distance between the lower positioning block 6 and the lower side plate 13.

[0053] Left positioning block 2, right positioning block 4, and lower positioning block 6 limit the water tank frame from three directions (left, right, and down). By operating the first left-right adjustment component 3 and the second left-right adjustment component 5, the positions of left positioning block 2 and right positioning block 4 relative to the left side plate 11 and right side plate 12 are adjusted respectively, thus adjusting the left-right position of the hood lock relative to the water tank frame. By adjusting the height of the lower positioning block 6 using the up-down adjustment component 7, the up-down position of the hood lock relative to the water tank frame can be adjusted. This avoids gap surface differences caused by installation deviations, improving the overall vehicle appearance quality and assembly consistency.

[0054] Please see Figures 1 to 3 In some embodiments, the first left-right adjustment component 3 includes a first shim group and a first connecting component. The first shim group includes multiple first shims 31, which are sandwiched between the left positioning block 2 and the left side plate 11. The first connecting component is used to connect the first shim group, the left positioning block 2, and the left side plate 11. By increasing or decreasing the number of first shims 31 or replacing shims of different thicknesses, precise fine-tuning of the position of the left positioning block 2 relative to the left side plate 11 can be achieved.

[0055] And / or,

[0056] Please see Figures 1 to 3 In some embodiments, the second left-right adjustment component 5 includes a second shim group and a second connecting component. The second shim group includes multiple second shims 51 sandwiched between the right positioning block 4 and the right side plate 12. The second connecting component connects the second shim group, the right positioning block 4, and the right side plate 12. The position of the right positioning block 4 can be flexibly controlled by adjusting the number or thickness of the shims in the second shim group to adapt to different assembly requirements.

[0057] And / or,

[0058] Please see Figure 1 and Figure 5 In some embodiments, the height adjustment assembly 7 includes a third shim group and a third connecting assembly. The third shim group includes multiple third shims 71 sandwiched between the lower positioning block 6 and the lower side plate 13. The third connecting assembly connects the third shim group, the lower positioning block 6, and the lower side plate 13. By selecting different numbers or thicknesses of third shims 71, precise adjustment in the height direction of the lower positioning block 6 can be achieved, thereby meeting the assembly requirements of the front cover lock in the vertical direction. By increasing or decreasing the number of first shims 31 or replacing shims of different thicknesses, precise fine-tuning of the position of the left positioning block 2 relative to the left side plate 11 can be achieved.

[0059] In some embodiments, the thicknesses of the multiple first shims 31 may be the same or different. When using first shims 31 of the same thickness, the position of the left positioning block 2 can be adjusted in a stepwise manner by increasing or decreasing the number of shims; when using first shims 31 of different thicknesses, they can be flexibly combined to achieve finer adjustment accuracy.

[0060] And / or,

[0061] Multiple second shims 51 may have the same or different thicknesses. When using second shims 51 of the same thickness, the position of the right positioning block 4 can be adjusted in a step-like manner by increasing or decreasing the number of shims; when using second shims 51 of different thicknesses, they can be flexibly combined to achieve finer adjustment accuracy.

[0062] And / or,

[0063] The thickness of the multiple third shims 71 may be the same or different. When using third shims 71 of the same thickness, the position of the lower positioning block 6 can be adjusted in a step-like manner by increasing or decreasing the number of shims; when using third shims 71 of different thicknesses, they can be flexibly combined to achieve a finer adjustment accuracy.

[0064] Please see Figure 2 In some embodiments, the first connecting component includes a first positioning pin 32 and a first screw 33. The first screw 33 passes through the left positioning block 2 and multiple first washers 31 in the left-right direction and is screwed into the left side plate 11. The first screw 33 does not protrude from the right surface of the left positioning block 2. The first positioning pin 32 passes through the left positioning block 2 and multiple first washers 31 in the left-right direction and is inserted into the left side plate 11. The first positioning pin 32 does not protrude from the right surface of the left positioning block 2. The first positioning pin 32 is interference-fitted with the left fixing plate.

[0065] The first screw 33 does not protrude from the right surface of the left positioning block 2; that is, its head is located in the hole inside the left positioning block 2. The screw part only passes through the washer assembly and is screwed into the left side plate 11, without protruding from the right end face of the left positioning block 2, thus avoiding the water tank frame. The first positioning pin 32 has an interference fit with both the left side plate 11 and the left positioning block 2. During assembly, the first positioning pin 32 needs to be pressed into the left positioning block 2 and the left side plate 11 respectively, which can effectively prevent loosening or displacement during the connection process.

[0066] Please see Figure 3 In some embodiments, the first gasket 31 has multiple first slots 311 extending upwards from the lower surface of the first gasket 31 to the middle, through which the first locating pin 32 or the first screw 33 passes. The first slot 311 can be elongated, and its width is slightly larger than the diameter of the first locating pin 32 or the first screw 33. The first gasket 31 can be inserted into the corresponding first locating pin 32 or the first screw 33 from top to bottom through the first slot 311. This structure enables quick assembly and flexible adjustment between the gasket and the connecting assembly.

[0067] Please see Figure 1 In some embodiments, the second connecting component includes a second locating pin 52 and a second screw 53. The second screw 53 passes through the right locating block 4 and multiple second washers 51 in the left-right direction and is screwed into the right side plate 12. The second screw 53 does not protrude from the left surface of the right locating block 4. The second locating pin 52 passes through the right locating block 4 and multiple second washers 51 in the left-right direction and is inserted into the right side plate 12. The second locating pin 52 does not protrude from the left surface of the right locating block 4. The second locating pin 52 is interference-fitted with the right locating block 4 and the right side plate 12.

[0068] The second screw 53 does not protrude from the left surface of the right positioning block 4; that is, its head is located in the hole inside the right positioning block 4. The screw part only passes through the washer assembly and screws into the right side plate 12, without protruding from the left end face of the right positioning block 4, thus avoiding the water tank frame. The second positioning pin 52 has an interference fit with both the right side plate 12 and the right positioning block 4. During assembly, the second positioning pin 52 needs to be pressed into the right positioning block 4 and the right side plate 12 respectively, which can effectively prevent loosening or displacement during the connection process.

[0069] Please see Figure 3 In some embodiments, the second washer 51 has multiple second slots 511 extending upwards from the lower surface of the second washer 51 to the middle, through which the second locating pin 52 or the second screw 53 passes. The second slot 511 can be elongated, and its width is slightly larger than the diameter of the second locating pin 52 or the second screw 53. The second washer 51 can be inserted into the corresponding second locating pin 52 or the second screw 53 from top to bottom through the second slot 511. This structure enables quick assembly and flexible adjustment between the washer and the connecting assembly.

[0070] Please see Figure 1 and Figure 5 In some embodiments, the third connecting component includes a third locating pin 72 and a third screw 73. The third screw 73 passes through the lower locating block 6 and multiple third washers 71 in the vertical direction and is screwed into the lower side plate 13. The third screw 73 does not protrude from the upper surface of the lower locating block 6. The third locating pin 72 passes through the lower locating block 6 and multiple third washers 71 in the vertical direction and is inserted into the lower side plate 13. The third locating pin 72 does not protrude from the upper surface of the lower locating block 6. The third locating pin 72 is interference-fitted with the lower locating block 6 and the lower side plate 13.

[0071] The third screw 73 does not protrude from the upper surface of the left positioning block 2; that is, its head is located in the hole inside the lower positioning block 6. The screw part only passes through the washer assembly and is screwed into the lower side plate 13, without protruding from the upper surface of the lower positioning block 6, thus avoiding the water tank frame. The third positioning pin 72 has an interference fit with both the lower side plate 13 and the lower positioning block 6. During assembly, a certain pressure needs to be applied to press the third positioning pin 72 into the lower positioning block 6 and the lower side plate 13 respectively, which can effectively prevent loosening or displacement during the connection process.

[0072] Please see Figure 5In some embodiments, the third gasket 71 has multiple third slots 711 extending rearward from the front surface of the third gasket 71 to the middle, through which the third locating pin 72 or the third screw 73 passes. The third slot 711 can be elongated, and its width is greater than the diameter of the third locating pin 72 or the third screw 73. The third gasket 71 can be inserted into the corresponding third locating pin 72 or the third screw 73 from top to bottom through the three slots. This structure enables quick assembly and flexible adjustment between the gasket and the connecting assembly.

[0073] Please see Figure 3 and Figure 5 Preferably, there is one first screw 33 and two first locating pins 32, forming a total of three first slots 311. Also, there is one second screw 53 and two second locating pins 52, forming a total of three second slots 511. Furthermore, there are two third screws 73 and two third locating pins 72, forming a total of four third slots 711.

[0074] Preferably, Figures 1 to 3 The display shows three first gaskets 31 and three second gaskets 51. Figure 5 The display shows two third pads, 71 in total.

[0075] Preferably, the interference fit between the locating pin and the locating block is greater than the interference fit between the locating pin and the side plate, so that adding or removing shims can keep the relative position of the locating pin and the locating block unchanged.

[0076] Please see Figure 1 In some embodiments, the rear side plate 14 is connected between the left side plate 11 and the right side plate 12, and the lower side plate 13 is connected between the left side plate 11 and the right side plate 12.

[0077] By adding or removing the third shim 71, the vertical position of the front cover lock relative to the water tank frame can be quickly adjusted; by adjusting the first shim 31 and the second shim 51, the horizontal position of the front cover lock relative to the water tank frame can be quickly adjusted.

[0078] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A positioning tool for adjusting installation of a hood lock of an automobile, characterized by comprising: include: Tooling bracket, left positioning block, first left and right adjustment component, right positioning block, second left and right adjustment component, lower positioning block and up and down adjustment component; The tooling bracket includes a left side plate, a right side plate, and a lower side plate; The left positioning block is located to the right of the left side plate. The left positioning block is connected to the left side plate through the first left and right adjustment component. The first left and right adjustment component is used to adjust the distance between the left positioning block and the left side plate. The right positioning block is located to the left of the right side plate. The right positioning block is connected to the right side plate through the second left and right adjustment component. The second left and right adjustment component is used to adjust the distance between the right positioning block and the right side plate. The lower positioning block is located above the lower side plate. The left side plate, the left positioning block, the lower positioning block, the right positioning block, and the right side plate are arranged sequentially in the left-right direction. The lower positioning block is connected to the lower side plate through the up-down adjustment component, which is used to adjust the distance between the lower positioning block and the lower side plate.

2. The positioning fixture of claim 1, wherein: The first left-right adjustment assembly includes a first shim group and a first connecting assembly. The first shim group includes multiple first shims sandwiched between the left positioning block and the left side plate. The first connecting assembly is used to connect the first shim group, the left positioning block, and the left side plate; and / or, The second left-right adjustment assembly includes a second shim group and a second connecting assembly. The second shim group includes multiple second shims sandwiched between the right positioning block and the right side plate. The second connecting assembly is used to connect the second shim group, the right positioning block, and the right side plate; and / or, The up-down adjustment assembly includes a third gasket group and a third connecting assembly. The third gasket group includes multiple third gaskets sandwiched between the lower positioning block and the lower side plate. The third connecting assembly is used to connect the third gasket group, the lower positioning block, and the lower side plate.

3. The positioning fixture of claim 2, wherein: Multiple first gaskets may have the same or different thicknesses; and / or, Multiple second gaskets may have the same or different thicknesses; and / or, Multiple third gaskets may have the same or different thicknesses.

4. The positioning fixture of claim 2, wherein: The first connecting assembly includes a first locating pin and a first screw. The first screw passes through the left locating block and multiple first washers in a left-right direction and is screwed into the left side plate. The first screw does not protrude from the right surface of the left locating block. The first locating pin passes through the left locating block and multiple first washers in a left-right direction and is inserted into the left side plate. The first locating pin does not protrude from the right surface of the left locating block. The first locating pin is interference-fitted with the left locating block and the left side plate.

5. The positioning fixture of claim 4, wherein: The first gasket has a plurality of first slots extending upward from the lower surface of the first gasket to the middle, and the first slots allow the first locating pin or the first screw to pass through.

6. The positioning fixture of claim 2, wherein: The second connecting assembly includes a second locating pin and a second screw. The second screw passes through the right locating block and multiple second washers in a left-right direction and is screwed into the right side plate. The second screw does not protrude from the left surface of the right locating block. The second locating pin passes through the right locating block and multiple second washers in a left-right direction and is inserted into the right side plate. The second locating pin does not protrude from the left surface of the right locating block. The second locating pin is interference-fitted with the right locating block and the right side plate.

7. The positioning fixture of claim 6, wherein: The second gasket has a plurality of second slots extending upward from the lower surface of the second gasket to the middle, and the second slots allow the second locating pin or the second screw to pass through.

8. The positioning fixture of claim 2, wherein: The third connecting assembly includes a third locating pin and a third screw. The third screw passes through the lower locating block and multiple third washers in the vertical direction and is screwed into the lower side plate. The third screw does not protrude from the upper surface of the lower locating block. The third locating pin passes through the lower locating block and multiple third washers in the vertical direction and is inserted into the lower side plate. The third locating pin does not protrude from the upper surface of the lower locating block. The third locating pin is interference-fitted with the lower locating block and the lower side plate.

9. The positioning fixture of claim 8, wherein: The third washer has multiple third slots that extend from the front surface of the third washer to the middle, and the third slots allow the third locating pin or the third screw to pass through.

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