Automobile wiper arm test fixture

Abstract

The utility model discloses a test fixture for an automobile wiper arm. The test fixture comprises a substrate, and a product mounting seat, a connecting arm pressing assembly, a wiper arm pressing assembly and a quick release mechanism which are arranged on the substrate, a pressure scale or an angle detection block or a size detection assembly is selectively mounted on the quick-release mechanism, the quick-release mechanism comprises a supporting seat and a handle rotatably mounted on the supporting seat, a locking block is arranged on the handle, the pressure scale, the angle detection block and the size detection assembly are respectively provided with a mounting plate, a clamping groove is upwards formed in the bottom of each mounting plate, and the locking block is arranged in the clamping groove. And the mounting plate is detachably arranged on the quick release mechanism through the matching of the locking block and the clamping groove. According to the utility model, the windscreen wiper is positioned and fixed through the positioning mechanism, a windscreen wiper arm can be conveniently detected, the quick release mechanism is arranged, a corresponding test tool can be selected when the angle or the pressing force or the size of the windscreen wiper needs to be detected, the angle, the pressing force and the size of the windscreen wiper can be detected on one test fixture, the structural design is ingenious, and the production cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of wiper arm testing fixtures, and in particular to an automotive wiper arm testing fixture. Background Technology

[0002] The wiping effect of car windshield wipers is directly affected by the wiping force and angle of the wiper arm. These two parameters are calculated by the design company based on the arrangement of the wipers and the tilt of the windshield. If the wiping angle and force of the wiper arm do not meet the design standards, the glass may not be wiped clean, resulting in scratches, uneven wear, abnormal noise, and a shortened lifespan of the wipers.

[0003] Automotive windshield wipers consist of a motor mounted on the vehicle, a connecting arm connected to the motor, a wiper arm connected to the connecting arm, and a wiper blade mounted on the wiper arm. To ensure that the wiper arm has a good wiping effect, it is necessary to test the wiping angle, clamping force, and dimensions of the wiper arm. In the existing technology, the wiping angle and clamping force of the wiper arm are tested using PLC program control, which is complex in structure and cannot test the dimensions. An additional dimension testing device is required to complete the dimension testing, resulting in high testing costs for the wiper arm. Therefore, how to adopt a simplified testing device for wiper arms is a key research direction in the industry.

[0004] Therefore, it is necessary to design a new technical solution to solve the above problems. Utility Model Content

[0005] In view of the above, this utility model addresses the deficiencies of the existing technology, and its main objective is to provide a testing fixture for automotive wiper arms. This fixture is equipped with a product mounting base, a connecting arm clamping assembly, and a wiper arm clamping assembly to position and fix the wiper arm, facilitating wiper arm testing. It also features a quick-release mechanism, on which a pressure scale, angle detection block, or size detection assembly can be selectively mounted. When it is necessary to test the wiping angle, clamping force, or size, the appropriate testing tool can be selected. This allows for the testing of wiping angle, clamping force, and size on a single fixture. The ingenious structural design saves production costs. Furthermore, the locking block and slot design allow for quick installation and removal of the mounting plate by simply turning a lever, making it more convenient to use.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A testing fixture for automotive wiper arms includes a base plate and a product mounting base, a connecting arm clamping assembly, a wiper arm clamping assembly, and a quick-release mechanism disposed on the base plate; wherein:

[0008] The product mounting base is provided with a positioning screw for mounting the car wiper arm. The connecting arm clamping assembly includes a connecting arm positioning block and a first clamping clamp corresponding to the connecting arm positioning block. The base plate is also provided with a first dial indicator insert corresponding to the connecting arm clamping assembly. The wiper arm clamping assembly includes a second clamping clamp.

[0009] The quick-release mechanism can be optionally equipped with a pressure scale, an angle detection block, or a size detection component. The quick-release mechanism includes a support base and a lever rotatably mounted on the support base. The lever is equipped with a locking block. The pressure scale, angle detection block, and size detection component all have mounting plates. The bottom of the mounting plate has an upward-facing slot. The mounting plate is detachably mounted on the quick-release mechanism through the cooperation of the locking block and the slot. The lever has a locked state and an unlocked state. When the mounting plate is mounted on the quick-release mechanism, rotating the lever can drive the locking block to rotate into the locking slot, and the lever is in the locked state to prevent the mounting plate from disengaging from the quick-release mechanism. When the lever drives the locking block to rotate to release the lock on the slot, the lever is in the unlocked state, allowing the mounting plate to disengage from the quick-release mechanism.

[0010] As a preferred embodiment, the lever includes a rotating part and a rod connected to the rotating part. The rotating part is provided with a threaded hole, and the locking block is installed in the threaded hole through a threaded connection part.

[0011] As a preferred embodiment, the support base is provided with a lower clamping plate at the top, and an upper clamping plate is mounted on the lower clamping plate. The bottom of the upper clamping plate has an upward-facing mounting groove for mounting the rotating part. The top wall of the mounting groove has an upward-facing through hole that passes through the upper clamping plate. The rotating part is rotatably mounted in the mounting groove. The rod protrudes outside the upper clamping plate, and the locking block protrudes from the top of the upper clamping plate through the through hole.

[0012] As a preferred embodiment, the outer periphery of the locking block is provided with a first flat surface and a first arc surface connecting the two ends of the first flat surface. Correspondingly, the slot is provided with a second flat surface and a second arc surface connecting the two ends of the second flat surface. When the locking block is in the locked state, the first arc surface abuts against the second flat surface. When the locking block is in the unlocked state, the first flat surface fits against the second flat surface.

[0013] As a preferred embodiment, the dimension detection assembly includes an end support block and a second dial indicator insert.

[0014] As a preferred embodiment, the product mounting base, connecting arm clamping assembly, wiper arm clamping assembly, and quick-release mechanism are all mounted on the base plate via heightening supports, and the first dial indicator insert is mounted on the base plate via a flipping assembly.

[0015] As a preferred embodiment, two of each of the product mounting base, connecting arm clamping assembly, wiper arm clamping assembly, quick-release mechanism, and first dial indicator insert are provided to form a left wiper arm detection module and a right wiper arm detection module.

[0016] As a preferred embodiment, the product mounting base of the right wiper arm detection module is located behind the quick-release mechanism of the left wiper arm detection module.

[0017] As a preferred embodiment, the bottom of the substrate is provided with a movable frame, which includes a frame body and movable wheels disposed at the bottom of the frame body.

[0018] As a preferred embodiment, the frame is provided with a support plate, and a tool storage box is provided on the support plate.

[0019] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0020] Its main features include a product mounting base, a connecting arm clamping assembly, and a wiper arm clamping assembly for positioning and fixing the wiper, facilitating wiper arm inspection. A quick-release mechanism is also included, which can optionally be equipped with a pressure scale, angle detection block, or size detection assembly. When it is necessary to test the wiping angle, clamping force, or size, the appropriate testing tool can be selected. This allows for the testing of wiping angle, clamping force, and size on a single test fixture. The ingenious structural design saves production costs. Combined with the locking block and slot, the mounting plate can be quickly installed and removed by simply turning the lever, making it more convenient to use.

[0021] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0022] Figure 1 This is a perspective view of a preferred embodiment of the present invention (a pressure scale and a size detection component are respectively installed on the quick-release mechanism);

[0023] Figure 2 This is a perspective view of another preferred embodiment of the present invention (a pressure scale and a size detection component are respectively installed on the quick-release mechanism);

[0024] Figure 3 This is a perspective view of a preferred embodiment of the present invention (angle detection block on the quick-release mechanism);

[0025] Figure 4 This is an exploded view of the quick-release mechanism of a preferred embodiment of the present utility model;

[0026] Figure 5This is an exploded view of the quick-release mechanism of a preferred embodiment of the present invention.

[0027] Figure 6 This is another exploded view of the quick-release mechanism of a preferred embodiment of the present invention.

[0028] Explanation of reference numerals in the attached diagram:

[0029] 10. Substrate; 11. Dial gauge insert socket

[0030] 12. Heightening support; 13. Flip-over assembly

[0031] 20. Product mounting base

[0032] 21. Positioning screw; 30. Connecting arm clamping assembly

[0033] 31. Connecting arm positioning block; 32. First clamping clamp

[0034] 40. Wiper arm clamping assembly 41. Second clamping clamp

[0035] 50. Quick-release mechanism; 51. Support base

[0036] 52. Wrench handle; 521. Locking block

[0037] 522. Rotating part; 523. Rod part

[0038] 524. Threaded hole; 525. Threaded connection part

[0039] 526. First flat surface 527. First circular arc surface

[0040] 53. Lower clamping plate 54. Upper clamping plate

[0041] 541. Mounting slot; 542. Through hole

[0042] 60. Pressure scale; 70. Angle detection block

[0043] 80. Dimensional inspection component; 81. End support block

[0044] 82. Second dial indicator insert socket; 90. Mounting plate

[0045] 91. Card slot; 911. Second flat surface

[0046] 912, Second arc surface 100, Moving frame

[0047] 1001, Frame; 1002, Casters

[0048] 1003, support plate 110, tool storage box. Detailed Implementation

[0049] First, it should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0050] Please refer to Figures 1 to 6 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, including a base plate 10 and a product mounting base 20, a connecting arm clamping assembly 30, a wiper arm clamping assembly 40, and a quick-release mechanism 50 disposed on the base plate 10.

[0051] The product mounting base 20 is provided with a positioning screw 21 for mounting a car wiper arm. The positioning screw 21 simulates the installation position of the connecting arm on the car. The connecting arm clamping assembly 30 includes a connecting arm positioning block 31 and a first clamp 32 corresponding to the connecting arm positioning block 31. The base plate 10 is also provided with a first dial indicator insertion seat 11 corresponding to the connecting arm clamping assembly 30. The wiper arm clamping assembly 40 includes a second clamp 41. The first clamp 32 and the second clamp 41 are existing mature technologies and will not be described in detail here. The first dial indicator insertion seat 11 is provided so that a dial indicator can be inserted when measuring dimensions.

[0052] The quick-release mechanism 50 can be selectively equipped with a pressure scale 60, an angle detection block 70, or a size detection component 80. The quick-release mechanism 50 includes a support base 51 and a lever 52 rotatably mounted on the support base 51. The lever 52 is equipped with a locking block 521. The pressure scale 60, angle detection block 70, and size detection component 80 each have a mounting plate 90. The bottom of the mounting plate 90 has an upward-facing slot 91. The mounting plate 90 is engaged with the locking block 521 and the slot 91. The lever 52 is detachably mounted on the quick-release mechanism 50 and has a locked state and an unlocked state. When the mounting plate 90 is mounted on the quick-release mechanism 50, rotating the lever 52 can drive the locking block 521 to rotate to the locking slot 91, and the lever 52 is in the locked state to prevent the mounting plate 90 from disengaging from the quick-release mechanism 50. When the lever 52 drives the locking block 521 to rotate to release the lock on the slot 91, the lever 52 is in the unlocked state, so that the mounting plate 90 can disengage from the quick-release mechanism 50.

[0053] See Figures 4 to 6As shown, the lever 52 includes a rotating part 522 and a rod part 523 connected to the rotating part 522. The rotating part 522 is provided with a threaded hole 524, and the locking block 521 is installed in the threaded hole 524 through a threaded connection part 525. The top of the support base 51 is provided with a lower clamping plate 53, and an upper clamping plate 54 is mounted on the lower clamping plate 53. The bottom of the upper clamping plate 54 is provided with an upward-facing mounting groove 541 for mounting the rotating part 522. The top wall of the mounting groove 541 is provided with an upward-facing through hole 542 that passes through the upper clamping plate 54. The rotating part 522 is rotatably mounted in the mounting groove 541. The rod part 523 protrudes from the upper clamping plate 54, and the locking block 521 protrudes from the top of the upper clamping plate 54 through the through hole 542.

[0054] Furthermore, the outer periphery of the locking block 521 is provided with a first flat surface 526 and a first arc surface 527 connecting the two ends of the first flat surface 526. Correspondingly, the slot 91 is provided with a second flat surface 911 and a second arc surface 912 connecting the two ends of the second flat surface 911. When the locking block 521 is in the locked state, the first arc surface 527 abuts against the second flat surface 911. When the locking block 521 is in the unlocked state, the first flat surface 526 fits against the second flat surface 911.

[0055] Preferably, the product mounting base 20, the connecting arm clamping assembly 30, the wiper arm clamping assembly 40, and the quick-release mechanism 50 are all mounted on the base plate 10 via the heightening support 12. The heightening support 12 makes the test fixture more ergonomic and more comfortable for the operator. The first dial indicator insert 11 is mounted on the base plate 10 via the flipping assembly 13. The flipping assembly 13 is an existing mature technology and will not be described in detail here.

[0056] See Figure 1 As shown, a movable frame 100 is provided at the bottom of the base plate 10. The movable frame 100 includes a frame body 1001 and movable wheels 1002 provided at the bottom of the frame body 1001. The frame body 1001 is provided with a support plate 1003. A tool storage box 110 is provided on the support plate 1003. Multiple tool storage boxes 110 are provided for storing disassembled pressure scales 60, angle detection blocks 70, size detection components 80, dial indicators 120, and torque wrenches for disassembling and assembling positioning screws 21.

[0057] In this embodiment, two of each of the product mounting base 20, connecting arm clamping assembly 30, wiper arm clamping assembly 40, quick-release mechanism 50, and first dial indicator insert 11 are provided to form a left wiper arm detection module and a right wiper arm detection module. The product mounting base 20 of the right wiper arm detection module is located behind the quick-release mechanism 50 of the left wiper arm detection module; wherein, see reference Figure 1 and Figure 2As shown, a size detection component 80 is installed on the quick-release mechanism 50 of the left wiper arm detection module. The size detection component 80 includes an end support block 81 and a second dial indicator insert 82. A pressure scale 60 is installed on the quick-release mechanism 50 of the right wiper arm detection module. The wiper arm is pressed onto the pressure scale by the wiper arm pressing component 40, and the pressure value is displayed. (See reference...) Figure 3 As shown, an angle detection block 70 is set on the quick-release mechanism 50 of the left wiper arm detection module. An angle meter is installed on the wiper arm and then placed on the angle detection block 70 to read the angle meter value. The angle meter can be purchased and is an existing mature technology, so it will not be described in detail here.

[0058] The key design feature of this utility model is:

[0059] Its main features include a product mounting base, a connecting arm clamping assembly, and a wiper arm clamping assembly for positioning and fixing the wiper, facilitating wiper arm inspection. A quick-release mechanism is also included, which can optionally be equipped with a pressure scale, angle detection block, or size detection assembly. When it is necessary to test the wiping angle, clamping force, or size, the appropriate testing tool can be selected. This allows for the testing of wiping angle, clamping force, and size on a single test fixture. The ingenious structural design saves production costs. Combined with the locking block and slot, the mounting plate can be quickly installed and removed by simply turning the lever, making it more convenient to use.

[0060] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A testing fixture for automotive windshield wiper arms, characterized in that: Including a substrate and a product mounting seat, a connecting arm pressing assembly, a wiper arm pressing assembly, and a quick release mechanism arranged on the substrate. The product mounting seat is provided with a positioning screw rod for mounting a wiper arm of a vehicle, the connecting arm pressing assembly includes a connecting arm positioning block and a first pressing clamp arranged corresponding to the connecting arm positioning block, and the substrate is further provided with a first dial gauge insert seat corresponding to the connecting arm pressing assembly, and the wiper arm pressing assembly includes a second pressing clamp. The quick release mechanism is selectively provided with a pressure scale or an angle detection block or a size detection assembly, the quick release mechanism includes a support seat and a turning handle rotatably mounted on the support seat, the turning handle is provided with a locking block, the pressure scale, the angle detection block, and the size detection assembly all have a mounting plate, the bottom of the mounting plate is upwardly provided with a clamping groove, the mounting plate is detachably arranged on the quick release mechanism through cooperation of the locking block and the clamping groove, the turning handle has a locking state and an unlocking state, when the mounting plate is arranged on the quick release mechanism, turning the turning handle can drive the locking block to rotate to lock the clamping groove, and the turning handle is in the locking state to limit the mounting plate from being separated from the quick release mechanism; when the turning handle drives the locking block to rotate to release the locking of the clamping groove, the turning handle is in the unlocking state to enable the mounting plate to be separated from the quick release mechanism.

2. The test fixture of claim 1, wherein: The turning handle includes a turning part and a rod part connected to the turning part, the turning part is provided with a threaded hole, and the locking block is mounted in the threaded hole through a threaded connection part.

3. The test fixture of claim 2, wherein: The top of the support seat is provided with a lower clamping plate, the lower clamping plate is arranged with an upper clamping plate, the bottom of the upper clamping plate is upwardly provided with a mounting groove for mounting the turning part, the top wall of the mounting groove is upwardly provided with a through hole penetrating through the upper clamping plate, the turning part is rotatably mounted in the mounting groove, the rod part protrudes out of the upper clamping plate, and the locking block protrudes out of the top of the upper clamping plate from the through hole.

4. The test fixture of claim 1, wherein: The outer periphery of the locking block is provided with a first flat surface and a first arc surface connecting two ends of the first flat surface, correspondingly, the clamping groove is provided with a second flat surface and a second arc surface connecting two ends of the second flat surface, when the locking block is in the locking state, the first arc surface abuts against the second flat surface, and when the locking block is in the unlocking state, the first flat surface abuts against the second flat surface.

5. The test fixture of claim 1, wherein: The size detection assembly includes an end support block and a second dial gauge insert seat.

6. The test fixture of claim 1, wherein: The product mounting seat, the connecting arm pressing assembly, the wiper arm pressing assembly, and the quick release mechanism are all arranged on the substrate through a heightening support, and the first dial gauge insert seat is arranged on the substrate through a turnover assembly.

7. The test fixture of claim 1, wherein: The product mounting seat, the connecting arm pressing assembly, the wiper arm pressing assembly, the quick release mechanism, and the first dial gauge insert seat are all provided with two, to form a left wiper arm detection module and a right wiper arm detection module.

8. The test fixture of claim 7, wherein: The product mounting seat of the right wiper arm detection module is located behind the quick release mechanism of the left wiper arm detection module.

9. The test fixture of claim 1, wherein: The bottom of the substrate is provided with a moving frame, and the moving frame includes a frame body and moving wheels arranged at the bottom of the frame body.

10. The test fixture of claim 9, wherein: The frame body is provided with a bearing plate, and the bearing plate is provided with a tool storage box.

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