A force measuring device for detecting the sound of a steering wheel

Abstract

The present invention relates to a force measuring device for detecting the click of a steering wheel, comprising a working frame, a pressing mechanism and a lifting mechanism, wherein the working frame comprises an upper fixed plate and a fixed bottom plate, the top four ends of the upper fixed plate are fixedly connected to the fixed bottom plate through a first guide shaft, a vertical plate is installed on the top of the upper fixed plate, the pressing mechanism is installed on the inner side of the vertical plate, a force measuring assembly matched with the pressing mechanism is provided on the upper fixed plate, the lifting mechanism is installed on the bottom of the fixed bottom plate, two first guide shafts are provided with a support plate transmission-connected with the lifting mechanism, two support plates are provided, and a positioning assembly is installed on the top of the support plate. The force measuring device can save manpower, and the force measuring device automatically clamps tooling, automatically connects electricity, automatically tests, and automatically disassembles tooling after conveying products on the assembly line, and only manual arrangement of loading and packing is required, and the force measuring time is short during the entire force measuring process, and the work efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of force measurement test, and in particular to a force measurement device for detecting the click of a steering wheel. Background Art

[0002] At present, after the steering wheel clicking mechanism on the market is assembled, it is necessary to test the force and stroke of the product to avoid problems such as missing springs, wrong springs, and unequal spring preload heights (this process is collectively referred to as force measurement in this article). This test process needs to be completed manually. The tester must first place the product in the base of the force measuring fixture, and then cover the upper cover into the lower cover. After the upper and lower covers are closed, press the fixture to ensure that the fixture is clamped to the spring preload position. Place the assembled fixture in the force measuring equipment, connect the test wire, press the force measuring switch, and the equipment will automatically measure the force. After the force measurement is completed, the personnel need to remove the upper cover and take out the product. This is a force measurement process.

[0003] Currently, manual force measurement consumes a lot of manpower. Although the test process is controlled by equipment, it takes a long time for personnel to load and unload products, connect wires, and wait for force measurement, which consumes a lot of working hours. Summary of the invention

[0004] The object of the present invention is to provide a force measuring device for detecting the click of a steering wheel, so as to solve the problems encountered in the above-mentioned background technology.

[0005] To achieve the above object, the technical solution of the present invention is as follows:

[0006] A force measuring device for detecting the sound of a steering wheel button comprises a working frame, a pressing mechanism and a lifting mechanism, the working frame comprises an upper fixed plate and a fixed bottom plate, the top four ends of the upper fixed plate are fixedly connected to the fixed bottom plate through a first guide shaft, a vertical plate is installed on the top of the upper fixed plate, the pressing mechanism is installed on the inner side of the vertical plate, a force measuring component cooperating with the pressing mechanism is provided on the upper fixed plate, the lifting mechanism is installed on the bottom of the fixed bottom plate, two of the first guide shafts are provided with a support plate transmission-connected to the lifting mechanism, two support plates are provided, and a positioning component is installed on the top of the support plate.

[0007] In the above scheme, the force measuring assembly includes a buffer and a compression spring. A plurality of buffers are installed and are located at the detection position of the steering wheel button mechanism product on the upper fixed plate. The bottom of the buffer passes through the upper fixed plate and is located at the bottom of the upper fixed plate. A movable rod is mounted inside the upper fixed plate. The compression spring is installed at the bottom of the movable rod. A conductive block is provided at the bottom of the compression spring.

[0008] In the above scheme, the pressing mechanism includes a stepper motor, a slider, a first cylinder and a pressure head. The stepper motor is installed on the top of the vertical plate. The output shaft of the stepper motor is transmission connected to the slider through a screw nut mechanism. The bottom of the slider is fixed with a first cylinder fixing plate. The first cylinder is provided with two and installed at the bottom of the first cylinder fixing plate. The end of the telescopic shaft of the first cylinder is fixedly connected to the pressure head through a pressure sensor.

[0009] In the above scheme, the positioning assembly includes a latch assembly and a proximity switch assembly, and the latch assembly and the proximity switch assembly are installed on the same pallet, and the other pallet is installed with a card reader assembly and a diffuse reflection sensor assembly.

[0010] In the above scheme, the lifting mechanism includes a second cylinder and a second cylinder fixing plate. The second cylinder is installed at the bottom of the second cylinder fixing plate. The end of the telescopic shaft of the second cylinder is fixedly connected to the fixed base plate through a floating joint. Second guide shafts are provided on both sides of the top of the second cylinder fixing plate. The second guide shafts pass through the middle of both sides of the fixed base plate and are fixedly connected to the middle of the support plate.

[0011] The above scheme also includes a slide, both sides of which are placed on the top of two support plates, a positioning plate is provided on the top of the slide, a gasket is fixed on the positioning plate, a first positioning column is fixed on one side of the positioning plate, and a second positioning column is fixed on the other side of the positioning plate, a stop block is installed on one side of the top of the slide, and a photoelectric switch and a reflector are installed on the other side of the top of the slide, and slide columns are provided on both sides of the bottom of the slide.

[0012] Compared with the prior art, the beneficial effects of the present invention are: the force measuring device can save manpower. After the product is conveyed on the assembly line, the force measuring device automatically clamps the tooling, automatically connects to the power supply, automatically tests, and automatically disassembles the tooling. Only manual arrangement of loading and packing is required. The force measuring time is short in the entire force measuring process and the work efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is a front view structural schematic diagram of the present invention;

[0016] Figure 3 It is a side view structural schematic diagram of the present invention;

[0017] Figure 4 It is a schematic diagram of the top structure of the slide in the present invention;

[0018] Figure 5 It is a schematic diagram of the bottom structure of the slide in the present invention;

[0019] Numbers in the figure: 1-working frame; 11-upper fixed plate; 111-buffer; 112-movable rod; 113-compression spring; 12-fixed bottom plate; 13-first guide shaft; 14-vertical plate; 2-pressing mechanism; 21-stepping motor; 22-slider; 23-first cylinder fixed plate; 24-first cylinder; 25-pressure head; 26-pressure sensor; 3-lifting mechanism; 31-second cylinder; 32-second cylinder fixed plate; 33-second guide shaft; 34-support plate; 341-card reader assembly; 342-latch assembly; 343-diffuse reflection sensor assembly; 344-proximity switch assembly; 35-linear bearing; 36-floating joint; 4-slide; 41-positioning plate; 42-gasket; 43-first positioning column; 44-second positioning column; 45-block; 46-sliding column; 47-photoelectric switch; 48-reflecting plate. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is now further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the relevant components of the present invention.

[0021] According to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and the accompanying drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the entirety of the present invention or as a limitation or restriction to the technical solution of the present invention.

[0022] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] Embodiment 1, as Figures 1 to 3 As shown, a force measuring device for detecting the sound of a steering wheel button includes a working frame 1, a pressing mechanism 2 and a lifting mechanism 3. The working frame 1 includes an upper fixed plate 11 and a fixed bottom plate 12. The four top ends of the upper fixed plate 11 are fixedly connected to the fixed bottom plate 12 through first guide shafts 13, so that the upper fixed plate 11 and the fixed bottom plate 12 are connected together through four first guide shafts 13, and a vertical plate 14 is installed on the top of the upper fixed plate 11. The vertical plate 14 is a U-shaped groove interface with its opening facing inward, and the vertical plate 14 is installed on the top of the working frame 1.

[0024] The pressing mechanism 2 is installed on the inner side of the vertical plate 14 and is located in the U-shaped groove of the vertical plate 14. The pressing mechanism 2 is used to control the process of pressing down and measuring the force of the steering wheel pressing mechanism. The pressing mechanism 2 includes a stepping motor 21, a slider 22, a first cylinder 24 and a pressure head 25. The stepping motor 21 is installed on the top of the vertical plate 14. The output shaft of the stepping motor 21 is connected to the slider 22 through a screw nut mechanism. The output shaft of the stepping motor 21 is coaxially fixed with the screw of the screw nut mechanism. The nut of the screw nut mechanism is fixedly connected with the slider 22. After starting the stepping motor 21, the slider 22 is driven to move up and down, so that it drops to a certain force measurement position.

[0025] A first cylinder fixing plate 23 is fixed to the bottom of the slider 22. Two first cylinders 24 are provided and installed on both sides of the bottom of the first cylinder fixing plate 23. The two first cylinders 24 are used to detect two steering wheel click mechanisms at one time. The end of the telescopic shaft of the first cylinder 24 is fixedly connected to the pressure head 25 through the pressure sensor 26. When measuring the force of the steering wheel click mechanism, the pressure head 25 contacts the outer shell of the steering wheel click mechanism, presses down through the first cylinder 24, and measures the pressure value of the downward pressure through the pressure sensor 26, and transmits the pressure value to the host.

[0026] The upper fixing plate 11 is provided with a force measuring assembly that cooperates with the pressing mechanism 2, and the force measuring assembly is used to press down the steering wheel click mechanism to measure the force. The force measuring assembly includes a buffer 111 and a compression spring 113. The buffer 111 is installed in multiples and is located at the detection position of the steering wheel click mechanism product on the upper fixing plate 11. The bottom of the buffer 111 passes through the upper fixing plate 11 and is located at the bottom of the upper fixing plate 11. For example Figure 1 The upper part of one of the buffers 111 is clamped in the waist groove in the middle of the upper fixing plate 11, the lower part of the buffer 111 is located at the middle bottom of the upper fixing plate 11, and the other two buffers 111 are located on both sides of the upper fixing plate 11. The buffer 111 is located directly below the pressure head 25, and the steering wheel click mechanism is elastically contacted through the buffer 111. A convex point can be set on the top of each buffer 111, and when the pressure head 25 is pressed down, the convex point is pressed accordingly, thereby pressing on the buffer 111, which is used to detect the force value and stroke of the product.

[0027] The upper fixed plate 11 is internally provided with a movable rod 112, a compression spring 113 is installed at the bottom of the movable rod 112, and a conductive block is provided at the bottom of the compression spring 113. When the jacking mechanism 3 rises, the steering wheel click mechanism product is clamped, the conductive block at the bottom of the compression spring 113 is connected to the conductive block on the jacking mechanism 3, and the movable rod 112 moves upward under the lifting of the jacking mechanism 3. The top of the movable rod 112 on one side is used to connect the upper terminal wiring of the detection product, such as the force measuring component, and the top of the movable rod 112 on the other side is used to connect the lower terminal wiring of the detection product, such as the positioning component.

[0028] The two first guide shafts 13 are provided with supporting plates 34 which are transmission-connected with the lifting mechanism 3 . Two supporting plates 34 are provided to support the steering wheel pressing mechanism waiting for force measurement.

[0029] The lifting mechanism 3 is installed at the bottom of the fixed base plate 12. The lifting mechanism 3 includes a second cylinder 31 and a second cylinder fixing plate 32. The second cylinder 31 is installed at the bottom of the second cylinder fixing plate 32. The end of the telescopic shaft of the second cylinder 31 is fixedly connected to the fixed base plate 12 through a floating joint 36. Second guide shafts 33 are provided on both sides of the top of the second cylinder fixing plate 32 to provide a guiding function. The second guide shaft 33 passes through the middle of both sides of the fixed base plate 12 and is fixedly connected to the middle of the support plate 34.

[0030] When the second cylinder 31 is started, the telescopic shaft of the second cylinder 31 moves toward the fixed bottom plate 12 during the retraction movement, and the second guide shafts 33 on both sides move upward to lift up the support plate 34, and lift up the steering wheel clicking mechanism installed on the two support plates 34 to reach the bottom of the upper fixed plate 11 for a force measurement experiment.

[0031] A positioning assembly is installed on the top of the pallet 34. The positioning assembly includes a latch assembly 342 and a proximity switch assembly 344. The latch assembly 342 and the proximity switch assembly 344 are installed on the same pallet 34. The proximity switch assembly 344 is used to detect whether a steering wheel pressing mechanism to be measured is placed on the pallet 34. The latch assembly 342 is provided with a micro cylinder and a plug connected to the micro cylinder. The plug is driven by the micro cylinder to support the steering wheel pressing mechanism to position the steering wheel pressing mechanism. A card reader assembly 341 and a diffuse reflection sensor assembly 343 are installed on another pallet 34. The diffuse reflection sensor assembly 343 is used to cooperate with the proximity switch assembly 344 to detect whether there is a product on the pallet 34, especially to detect whether there is an obstacle at the front end of the body. The card reader assembly 341 is used to scan the QR code on the side of the steering wheel pressing mechanism when the tooling stops to read the product access card data information, and the scanned data is transmitted to the host to confirm the status of the product in this tooling.

[0032] Example 2, see Figure 4 and Figure 5 On the basis of Example 1, the above scheme further includes a slide 4. When working, the two sides of the slide 4 are placed on the top of the two support plates 34. The slide 4 can be transported to the force measuring device for the steering wheel click detection through the assembly line conveying mechanism, and the steering wheel click mechanism is placed on the slide 4 to make it stable for the force measurement experiment.

[0033] As a preferred solution, a positioning plate 41 is provided on the top of the slide 4, and a gasket 42 is fixed on the positioning plate 41 to prevent the steering wheel click mechanism from directly contacting the upper part of the positioning plate 41 and preventing hard damage. A first positioning column 43 is fixed on one side of the positioning plate 41, and a second positioning column 44 is fixed on the other side of the positioning plate 41. The two positioning columns are inserted into the mounting holes of the steering wheel click mechanism for positioning. A stopper 45 is installed on one side of the top of the slide 4 to cooperate with the positioning column to make its positioning more accurate. A photoelectric switch 47 and a reflector 48 are installed on the other side of the top of the slide 4. The photoelectric switch 47 is used to detect whether a product to be measured is placed on the slide 4.

[0034] During implementation, a QR code is attached to the back of the photoelectric switch 47. When the slide 4 is installed on the support plate 34 in the tooling, the back of the photoelectric switch 47 is located at the position of the card reader component 341, and the reflector 48 is located at the position of the diffuse reflection sensor component 343. When working, the diffuse reflection sensor component 343 emits a laser. When the laser hits the reflector 48, the diffuse reflection sensor component 343 senses the signal and feeds it back to the background host, so that the tooling stops moving, and the product is roughly positioned at the tooling position. Slide posts 46 are provided on both sides of the bottom of the slide 4 to facilitate chain conveying on the assembly line.

[0035] In the present invention, when the slide 4 on the assembly line flows through the force measuring device, the positioning assembly installed on the top of the support plate 34 positions the steering wheel click mechanism. When the force measuring device is in an idle state, the second cylinder 31 in the lifting mechanism 3 lifts the support plate 34 and the slide 4 placed on the top of the support plate 34, and then lifts the steering wheel click mechanism placed on the top of the slide 4, and pushes the slide 4 together with the product to the upper fixed plate 11 in the force measuring device. There are blocks 45 and positioning columns on the slide 4 to ensure that the lifted product is stably loaded on the positioning plate 41 of the slide 4. The pressing mechanism 2 starts the pressing action, and the force measuring assembly is used to press down the steering wheel click mechanism for force measurement, so that the steering wheel click mechanism and other products achieve a pre-stressing effect. After completing the above actions, the force measuring device automatically starts force measurement. After the force measurement is completed, the force measurement information (product force value, stroke size) will be transmitted to the host through the sensor. Through the background comparison, it is recorded whether the force measurement of the product on the slide 4 is qualified.

[0036] The force measuring device can save manpower. After the product is conveyed on the assembly line, the force measuring device automatically clamps the tooling, automatically connects the power, automatically tests, and automatically disassembles the tooling. Only manual arrangement of loading and packing is required. The force measuring time is short in the entire force measuring process and the work efficiency is high.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A force measuring device for detecting the ringing of a steering wheel, characterized in that: The invention comprises a working frame (1), a pressing mechanism (2) and a lifting mechanism (3), wherein the working frame (1) comprises an upper fixed plate (11) and a fixed bottom plate (12), the top four ends of the upper fixed plate (11) are fixedly connected to the fixed bottom plate (12) via a first guide shaft (13), a vertical plate (14) is installed on the top of the upper fixed plate (11), the pressing mechanism (2) is installed on the inner side of the vertical plate (14), a force measuring component matched with the pressing mechanism (2) is provided on the upper fixed plate (11), the lifting mechanism (3) is installed on the bottom of the fixed bottom plate (12), two first guide shafts (13) are provided with supporting plates (34) drivingly connected with the lifting mechanism (3), two supporting plates (34) are provided, and a positioning component is installed on the top of the supporting plates (34); The force measuring assembly comprises a buffer (111) and a compression spring (113); a plurality of buffers (111) are installed and are located at a detection position of a steering wheel click mechanism product on the upper fixing plate (11); the bottom of the buffer (111) passes through the upper fixing plate (11) and is located at the bottom of the upper fixing plate (11); a movable rod (112) is sleeved inside the upper fixing plate (11); the compression spring (113) is installed at the bottom of the movable rod (112); and a conductive block is provided at the bottom of the compression spring (113); The pressing mechanism (2) comprises a stepping motor (21), a slider (22), a first cylinder (24) and a pressure head (25); the stepping motor (21) is mounted on the top of the vertical plate (14); the output shaft of the stepping motor (21) is transmission-connected to the slider (22) via a screw-nut mechanism; a first cylinder fixing plate (23) is fixed to the bottom of the slider (22); two first cylinders (24) are provided and are mounted on the bottom of the first cylinder fixing plate (23); and the end of the telescopic shaft of the first cylinder (24) is fixedly connected to the pressure head (25) via a pressure sensor (26); The lifting mechanism (3) comprises a second cylinder (31) and a second cylinder fixing plate (32); the second cylinder (31) is mounted on the bottom of the second cylinder fixing plate (32); the end of the telescopic shaft of the second cylinder (31) is fixedly connected to the fixed bottom plate (12) via a floating joint (36); second guide shafts (33) are provided on both sides of the top of the second cylinder fixing plate (32); the second guide shafts (33) pass through the middle of both sides of the fixed bottom plate (12) and are fixedly connected to the middle of the support plate (34).

2. A force measuring device for detecting a steering wheel click according to claim 1, characterized in that: The positioning assembly comprises a latch assembly (342) and a proximity switch assembly (344); the latch assembly (342) and the proximity switch assembly (344) are mounted on the same support plate (34); and another support plate (34) is mounted with a card reader assembly (341) and a diffuse reflection sensor assembly (343).

3. A force measuring device for detecting a steering wheel click according to claim 1, characterized in that: It also includes a slide (4), the two sides of the slide (4) are placed on the top of two support plates (34), a positioning plate (41) is provided on the top of the slide (4), a gasket (42) is fixed on the positioning plate (41), a first positioning column (43) is fixed on one side of the positioning plate (41), and a second positioning column (44) is fixed on the other side of the positioning plate (41), a stopper (45) is installed on one side of the top of the slide (4), and a photoelectric switch (47) and a reflective plate (48) are installed on the other side of the top of the slide (4), and slide columns (46) are provided on both sides of the bottom of the slide (4).

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