Leaf spring elastic force measuring gauge

Abstract

The utility model relates to a leaf spring elasticity measuring gauge, which comprises a first support; the positioning block is arranged on the first support, and a positioning pin is arranged on the side, away from the first support, of the positioning block and used for being connected with a positioning hole of the leaf spring to be detected in a clamped mode; the limiting mechanism is arranged on the first support, the limiting mechanism comprises an operating rod, a sliding rod and a pressing block, and the operating rod is rotationally arranged on the first support; the sliding rod is slidably arranged on the first support, one end of the sliding rod is connected with the operating rod, the other end of the sliding rod is connected with the pressing block, and the pressing block and the positioning block are oppositely arranged to clamp the positioning end of the leaf spring to be tested; the measuring block is in contact with the cantilever end of the to-be-measured leaf spring, and the measuring block pushes the cantilever end of the to-be-measured leaf spring to be bent under the driving of external force; the pressure sensor is connected with the measuring block, and the pressure sensor and the measuring block are located on the same side of the first support and used for reading the elastic force of the to-be-measured leaf spring, the positioning precision of the positioning end of the leaf spring can be improved, the positioning end of the leaf spring is prevented from deviating, and therefore the elastic force detection precision of the leaf spring is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of leaf spring gauges, and in particular to a leaf spring elastic force measurement gauge. Background Art

[0002] During the production process of leaf springs, the elastic force of the leaf springs needs to be tested to ensure the production quality of the products. The existing leaf springs are in the form of thin sheets. Since the detection displacement of the leaf springs is small and the thickness of the leaf springs is thin, the positioning end of the leaf spring is easily offset when the handheld dynamometer is used for detection, which affects the detection accuracy of the elastic force of the leaf springs. Utility Model Content

[0003] The present application provides a leaf spring elastic force measuring fixture to solve the technical problem that when a handheld dynamometer is used to measure the elastic force of a leaf spring, the positioning end of the leaf spring is easily offset, thereby affecting the elastic force detection accuracy of the leaf spring.

[0004] The present application provides a leaf spring elastic force measuring tool, comprising: a first support; a positioning block, which is arranged on the first support, and a positioning pin is arranged on the side of the positioning block away from the first support, which is used to be clamped and connected with the positioning hole of the leaf spring to be measured; a limiting mechanism, which is arranged on the first support, and the limiting mechanism includes an operating rod, a sliding rod and a pressure block, and the operating rod is rotatably arranged on the first support; the sliding rod is slidably arranged on the first support, one end of the sliding rod is connected to the operating rod, and the other end is connected to the pressure block, and the pressure block and the positioning block are arranged opposite to each other to clamp the positioning end of the leaf spring to be measured; a measuring block, which is in contact with the cantilever end of the leaf spring to be measured, and the measuring block pushes the cantilever end of the leaf spring to be measured to bend under the drive of an external force; a pressure sensor, which is connected to the measuring block and the two are located on the same side of the first support, and is used to read the elastic force of the leaf spring to be measured.

[0005] In a possible implementation, the first support has a first side and a second side that are relatively arranged in the first direction, the positioning block is arranged on the first side of the first support, and the operating rod is rotatably connected to the second side of the first support; the first support is provided with a first through groove in the first direction, and the sliding rod is slidably connected to the first through groove; the limiting mechanism also includes a locking block, the first support is provided with a second through groove in the second direction, the sliding rod is provided with a third through groove that is connected to the second through groove, the locking block can pass through the third through groove and be plugged into the second through groove, and the first direction intersects with the second direction.

[0006] In one possible implementation, the second through slot has a first width in the second direction, the third through slot has a second width in the second direction, and the first width is smaller than the second width; a roller is rotatably arranged in the third through slot of the sliding rod, and a first groove is arranged on the locking block to abut against the roller.

[0007] In a possible implementation, the limiting mechanism also includes a second support, on which a first driving member is disposed, and a power output end of the first driving member is transmission-connected to an end of the locking block away from the first groove so that the locking block reciprocates along the first direction.

[0008] In a possible implementation, the limiting mechanism also includes a connecting block and a spring, and the two opposite sides of the connecting block are respectively connected to the operating rod and the sliding rod; the first support is provided with a accommodating cavity, one end of the spring is connected to the connecting block, and the other end extends into the accommodating cavity and is connected to the first support.

[0009] In a possible implementation, it also includes a first driving mechanism, which includes a third support, a first slide rail and a second driving member. The third support is slidably arranged on the first slide rail, the power output end of the second driving member is transmission-connected to the third support, and the end of the pressure sensor away from the measuring block is connected to the third support.

[0010] In a possible implementation, a second driving mechanism is also included, and the second driving mechanism includes a connecting plate, a second slide rail and a third driving member. The connecting plate has two sides arranged opposite to each other, one side of the connecting plate is fixedly connected to the first slide rail, and the other side is slidably connected to the second slide rail. The length direction of the second slide rail is parallel to the length direction of the first slide rail, and the power output end of the third driving member is transmission-connected to the connecting plate.

[0011] In a possible implementation, a first proximity switch is provided on a side of the connecting plate away from the second slide rail, the first proximity switch is controlled and connected to the second driving member, and the first proximity switch is used to detect a first displacement of the third support in the second direction.

[0012] In a possible implementation, it also includes a working platform, the second slide rail is arranged on the working platform, a second proximity switch is arranged on the working platform, the second proximity switch is control-connected with the third driving member, and the second proximity switch is used to detect the second displacement of the connecting plate in the second direction.

[0013] In a possible implementation, a second groove is provided on a side of the measuring block facing away from the pressure sensor, and the second groove is clamped and connected to the rotating shaft of the leaf spring to be measured.

[0014] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0015] The leaf spring elastic force measuring fixture provided in the embodiment of the present application, before starting the test, rotate the operating rod so that the operating rod drives the sliding rod to slide relative to the first support, the sliding rod drives the pressure block away from the positioning block, the positioning end of the leaf spring to be tested is directed toward the positioning block, and the positioning hole of the leaf spring to be tested is connected with the positioning pin to realize the positioning of the leaf spring to be tested in the vertical plane. Then, the operating rod drives the sliding rod to slide in the opposite direction relative to the first support, the sliding rod drives the pressure block to approach the positioning block, the pressure block and the positioning block jointly clamp the positioning end of the leaf spring to be tested, at this time, the cantilever end of the leaf spring to be tested is cantilevered on the first support. Driven by an external force, the measuring block pushes the cantilever end of the leaf spring to be tested to bend, and the pressure sensor reads the elastic force of the leaf spring to be tested. The pressure sensor can be connected to an external display device (such as a computer screen) to transmit the read elastic force data to the external display device, thereby realizing accurate detection of the elastic force of the leaf spring. Compared with the prior art, the leaf spring elastic force measuring fixture provided in the embodiment of the present application can improve the positioning accuracy of the positioning end of the leaf spring, avoid the positioning end of the leaf spring from being offset, and thus ensure the elastic force detection accuracy of the leaf spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0019] Figure 1 It is a structural schematic diagram of an existing leaf spring;

[0020] Figure 2 A three-dimensional diagram of a leaf spring force measurement fixture provided in an embodiment of the present application;

[0021] Figure 3 for Figure 2 The schematic diagram of the working state of the leaf spring elastic force measuring fixture is shown;

[0022] Figure 4 for Figure 2 A partial structural schematic diagram of a limit mechanism of a leaf spring force measuring fixture is shown;

[0023] Figure 5for Figure 4 A top view of the limiting mechanism shown;

[0024] Figure 6 For along Figure 5 Sectional view in the AA direction;

[0025] Figure 7 for Figure 2 A partial structural stereogram of the limit mechanism of the leaf spring force measuring fixture is shown;

[0026] Figure 8 for Figure 2 A top view of a leaf spring force measuring fixture is shown, wherein the working platform is not shown;

[0027] Fig. 9 for Figure 8 A side view of a leaf spring force measuring jig is shown.

[0028] Description of reference numerals:

[0029] 100. Leaf spring elastic force measuring fixture; 1. First support; 11. First through slot; 12. Second through slot; 13. Accommodating chamber; 2. Positioning block; 21. Positioning pin; 3. Limiting mechanism; 31. Operating lever; 32. Slide bar; 321. Third through slot; 322. Roller; 33. Pressing block; 34. Locking block; 341. First groove; 35. Second support; 36. First driving member; 37. Connecting block; 38. Spring; 4. Measuring block; 41. Second groove; 5. Pressure sensor; 6. First driving mechanism; 61. Third support; 62. First slide rail; 63. Second driving member; 7. Second driving mechanism; 71. Connecting plate; 711. First proximity switch; 72. Second slide rail; 73. Third driving member; 8. Working platform; 82. Second proximity switch;

[0030] 200, leaf spring; 201, positioning end; 202, cantilever end; 203, positioning hole; 204, rotating shaft. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0032] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0033] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a change in posture or a change in motion state, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0034] In the prior art, during the production process of the leaf spring 200, it is necessary to test the elastic force of the leaf spring 200 to ensure the production quality of the product. Figure 1 As shown, the existing leaf spring 200 is in the shape of a thin sheet, and the two ends of the leaf spring 200 are respectively a positioning end 201 and a cantilever end 202, wherein the positioning end 201 is provided with two positioning holes 203, and the cantilever end 202 is provided with a rotating shaft 204. The elastic performance of the leaf spring 200 is expressed by the corresponding linear relationship between the radial displacement of the cantilever end 202 and the elastic force it bears, in particular, the elastic force needs to reach F1 after the first displacement y1, and the elastic force needs to reach F2 after the second displacement y2. Since the detection displacement of the leaf spring 200 is small and the thickness of the leaf spring 200 is relatively thin, the positioning end 201 of the leaf spring 200 is easily offset during detection by a handheld dynamometer, thereby affecting the elastic force detection accuracy of the leaf spring 200.

[0035] In order to solve the technical problem in the prior art that when a handheld dynamometer is used to detect the elastic force of a leaf spring 200, the positioning end 201 of the leaf spring 200 is easily offset, thereby affecting the elastic force detection accuracy of the leaf spring 200, the present application provides a leaf spring elastic force measuring fixture 100, which can improve the positioning accuracy of the positioning end 201 of the leaf spring 200 and avoid the positioning end 201 of the leaf spring 200 from being offset, thereby ensuring the elastic force detection accuracy of the leaf spring 200.

[0036] Figure 1 A leaf spring elastic force measuring jig 100 provided in an embodiment of the present application comprises a first support 1, a positioning block 2, a limiting mechanism 3, a measuring block 4 and a pressure sensor 5, wherein the positioning block 2 is arranged on the first support 1, and a positioning pin 21 is arranged on the side of the positioning block 2 away from the first support 1, which is used to clamp the positioning end 201 of the leaf spring 200 to be measured; the limiting mechanism 3 is arranged on the first support 1, and the limiting mechanism 3 comprises an operating rod 31, a sliding rod 32 and a pressing block 33, the operating rod 31 is rotatably arranged on the first support 1, and the sliding rod 32 is arranged on the first support 1. The rod 32 is slidably arranged on the first support 1, one end of the sliding rod 32 is connected to the operating rod 31, and the other end is connected to the pressure block 33. The pressure block 33 is arranged opposite to the positioning block 2 to clamp the positioning end 201 of the leaf spring 200 to be tested; the measuring block 4 is in contact with the cantilever end 202 of the leaf spring 200 to be tested, and the measuring block 4 pushes the cantilever end 202 of the leaf spring 200 to be tested to bend under the drive of external force; the pressure sensor 5 is connected to the measuring block 4 and the two are located on the same side of the first support 1, which is used to read the elastic force of the leaf spring 200 to be tested.

[0037] It should be noted that the circumference of the positioning pin 21 matches the circumference of the positioning hole 203 of the leaf spring 200 to be tested, thereby achieving the initial positioning of the leaf spring 200 to be tested. Figure 3As shown, before starting the test, the operating rod 31 is rotated so that the operating rod 31 drives the slide bar 32 to slide relative to the first support 1, and the slide bar 32 drives the pressure block 33 away from the positioning block 2, so that the positioning end 201 of the leaf spring 200 to be tested is directed toward the positioning block 2, and the positioning hole 203 of the leaf spring 200 to be tested is connected with the positioning pin 21 by clamping, so as to realize the positioning of the leaf spring 200 to be tested in the vertical plane. Then, the operating rod 31 drives the slide bar 32 to slide in the opposite direction relative to the first support 1, and the slide bar 32 drives the pressure block 33 to approach the positioning block 2, and the pressure block 33 and the positioning block 2 jointly clamp the positioning end 201 of the leaf spring 200 to be tested, and at this time, the cantilever end 202 of the leaf spring 200 to be tested is cantilevered on the first support 1. The measuring block 4 pushes the cantilever end 202 of the leaf spring 200 to be tested to bend under the drive of external force, and the pressure sensor 5 reads the elastic force of the leaf spring 200 to be tested. The pressure sensor 5 can be connected to an external display device (such as a computer screen) to transmit the read elastic force data to the external display device to achieve accurate detection of the elastic force of the leaf spring 200. Compared with the prior art, the leaf spring elastic force measuring jig 100 provided in the embodiment of the present application can improve the positioning accuracy of the positioning end 201 of the leaf spring 200, avoid the positioning end 201 of the leaf spring 200 from being offset, thereby ensuring the elastic force detection accuracy of the leaf spring 200.

[0038] It should be emphasized that two positioning pins 21 may be provided, and the two positioning pins 21 correspond one-to-one to the positioning holes 203 of the leaf spring 200 to be tested, so as to improve the positioning accuracy.

[0039] In some embodiments, Figures 4 to 6 As shown, the first support 1 has a first side and a second side that are relatively arranged in the first direction, the positioning block 2 is arranged on the first side of the first support 1, and the operating rod 31 is rotatably connected to the second side of the first support 1; the first support 1 is provided with a first through groove 11 in the first direction, and the sliding rod 32 is slidably connected to the first through groove 11; the limiting mechanism 3 also includes a locking block 34, the first support 1 is provided with a second through groove 12 in the second direction, the sliding rod 32 is provided with a third through groove 321 that is connected to the second through groove 12, the locking block 34 can pass through the third through groove 321 and be plugged and connected to the second through groove 12, and the first direction intersects with the second direction.

[0040] For the convenience of explanation and understanding, the first direction can be the X-axis shown in the figure, and the second direction can be the Y-axis shown in the figure. It can be understood that the operating rod 31 drives the slide bar 32 to slide in the opposite direction along the second direction (Y direction), and the slide bar 32 drives the pressure block 33 to approach the positioning block 2, and the pressure block 33 and the positioning block 2 jointly clamp the positioning end 201 of the leaf spring 200 to be tested, and the locking block 34 is connected to the second through groove 12 through the third through groove 321, which can limit the displacement of the slide bar 32 in the second direction, so that the pressure block 33 provides a stable pressure to the leaf spring 200 to be tested, ensuring that the positioning end 201 of the leaf spring 200 to be tested will not be offset relative to the first support 1, thereby improving the elastic force detection accuracy of the leaf spring 200.

[0041] like Figure 6 and Figure 7 As shown, the second through slot 12 has a first width in the second direction, the third through slot 321 has a second width in the second direction, and the first width is smaller than the second width; a roller 322 is rotatably arranged in the third through slot 321 of the slide bar 32, and a first groove 341 is arranged on the locking block 34 to abut against the roller 322. When locking is required, the locking block 34 passes through the third through slot 321 and the second through slot 12 in sequence and is connected by clamping with the roller 322, and the roller 322 can reduce the friction resistance between the locking block 34 and the slide bar 32, and the locking block 34 is connected to the roller 322 by clamping with the roller 322, so that the locking block 34 can lock the slide bar 32, and the pressure block 33 provides a stable pressing force to the leaf spring 200.

[0042] like Figure 7 As shown, the limiting mechanism 3 also includes a second support 35, and a first driving member 36 is arranged on the second support 35. The power output end of the first driving member 36 is drivingly connected to the end of the locking block 34 away from the first groove 341, so that the locking block 34 reciprocates along the first direction. The first driving member 36 can be a cylinder, and the first driving member 36 drives the locking block 34 to move in the direction close to the first support 1, thereby realizing the locking function of the slide bar 32 and the pressure block 33. After the detection is completed, the first driving member 36 drives the locking block 34 to move in the direction away from the first support 1, and releases the lock of the slide bar 32 and the pressure block 33.

[0043] Optionally, the first groove 341 has a guiding slope, so that the width of the locking block 34 in the second direction gradually decreases in a direction away from the first driving member 36 , thereby playing a guiding role.

[0044] In some embodiments, Figure 6As shown, the limiting mechanism 3 also includes a connecting block 37 and a spring 38. The two opposite sides of the connecting block 37 are respectively connected to the operating rod 31 and the sliding rod 32 to realize the linkage of the operating rod 31 and the sliding rod 32. Specifically, the cross-section of the operating rod 31 can be set to a Z shape, the middle part of the operating rod 31 is rotatably connected to the first support 1, one end of the operating rod 31 is fixedly connected to the connecting block 37, and the end of the operating rod 31 away from the connecting block 37 is a free end; the first support 1 is provided with a accommodating cavity 13 in the second direction, one end of the spring 38 is connected to the connecting block 37, and the other end extends into the accommodating cavity 13 and is connected to the first support 1. When the leaf spring 200 to be tested needs to be placed initially, an external force is applied to the free end of the operating rod 31, so that the free end of the operating rod 31 rotates in the direction away from the first support 1, and through the linkage action of the connecting block 37 and the sliding rod 32, the spring 38 is compressed, and at the same time, the sliding rod 32 drives the pressing block 33 to move away from the positioning block 2 relative to the first support 1, and the positioning end 201 of the leaf spring 200 is placed on the positioning pin 21; then the free end of the operating rod 31 is released, and under the action of the restoring force of the spring 38, the free end of the operating rod 31 rotates in the direction close to the first support 1, and the sliding rod 32 drives the pressing block 33 to approach the positioning block 2 and compresses the positioning end 201 of the leaf spring 200, and the first driving member 36 drives the locking block 34 through the third through slot 321 and the second through slot 12 to lock the sliding rod 32.

[0045] In some embodiments, Figure 8 and Fig. 9 As shown, it also includes a first driving mechanism 6, which includes a third support 61, a first slide rail 62 and a second driving member 63. The third support 61 is slidably arranged on the first slide rail 62, and the power output end of the second driving member 63 is transmission-connected to the third support 61. The end of the pressure sensor 5 away from the measuring block 4 is connected to the third support 61. The length direction of the first slide rail 62 is parallel to the second direction, and the length direction of the leaf spring 200 to be measured intersects with the length direction of the first slide rail 62. The second driving member 63 can be a cylinder, and the third support 61 is driven by the second driving member 63 to move along the first slide rail 62, thereby driving the pressure sensor 5 and the measuring block 4 to move toward the cantilever end 202 close to the leaf spring 200, until the cantilever end 202 of the leaf spring 200 is bent by force when a first displacement y1 occurs relative to the initial state, thereby measuring the elastic force F of the leaf spring 200 under this displacement. y1 , F y1 The first displacement y1 is compared with the first set threshold value F1 to determine whether the cantilever end 202 of the leaf spring 200 meets the elastic force requirement after the first displacement y1.

[0046] In some embodiments, Figure 8 and Fig. 9As shown, the second driving mechanism 7 is also included. The second driving mechanism 7 includes a connecting plate 71, a second slide rail 72 and a third driving member 73. The connecting plate 71 has two oppositely arranged sides. One side of the connecting plate 71 is fixedly connected to the first slide rail 62, and the other side is slidably connected to the second slide rail 72. The length direction of the second slide rail 72 is parallel to the length direction of the first slide rail 62. The power output end of the third driving member 73 is transmission-connected to the connecting plate 71. The third driving member 73 can be a cylinder. The connecting plate 71 is driven to move along the second slide rail 72 by the third driving member 73. Under the linkage of the connecting plate 71 and the second support 35, the pressure sensor 5 and the measuring block 4 are driven to continue to move toward the cantilever end 202 close to the leaf spring 200 until the cantilever end 202 of the leaf spring 200 is bent by force when the second displacement y2 occurs relative to the initial state, thereby measuring the elastic force F of the leaf spring 200 under this displacement. y2 , F y2 The second displacement y2 is compared with the second set threshold F2 to determine whether the cantilever end 202 of the leaf spring 200 meets the elastic force requirement after the second displacement y2.

[0047] A first proximity switch 711 is provided on the side of the connecting plate 71 away from the second slide rail 72. The first proximity switch 711 is connected to the second driving member 63 for controlling. The first proximity switch 711 is used to detect the first displacement of the third support 61 in the second direction. After the third support 61 moves y1 along the first slide rail 62 in the direction close to the leaf spring 200, the first proximity switch 711 controls the second driving member 63 to close, thereby limiting the movement stroke of the third support 61, which can prevent the leaf spring 200 from being deformed due to excessive force, and ensure that the performance and quality of the leaf spring 200 are not affected.

[0048] Also includes working platform 8 ( Figure 2 ), the second slide rail 72 is arranged on the working platform 8, and the working platform 8 is provided with a second proximity switch 82, which is controlled and connected with the third driving member 73, and the second proximity switch 82 is used to detect the second displacement of the connecting plate 71 in the second direction. The second proximity switch 82 can adopt an existing displacement sensor, and when the connecting plate 71 moves along the second slide rail 72 in the direction close to the leaf spring 200 by y2, the second proximity switch 82 controls the third driving member 73 to close, thereby limiting the movement stroke of the connecting plate 71, which can prevent the leaf spring 200 from being deformed due to excessive force, and ensure that the performance and quality of the leaf spring 200 are not affected.

[0049] Optionally, the first support 1 and the second support 35 may also be arranged on the working platform 8 .

[0050] In some embodiments, Figure 8As shown, a second groove 41 is provided on the side of the measuring block 4 away from the pressure sensor 5, and the second groove 41 is clamped and connected with the rotating shaft 204 of the leaf spring 200 to be tested. The second groove 41 can be set to an arc shape, a V shape, etc., to increase the release area between the measuring block 4 and the leaf spring 200, thereby improving the stability of pushing the leaf spring 200 to move and ensuring the elastic force detection accuracy of the leaf spring 200.

[0051] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0052] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0053] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A leaf spring force measuring tool, characterized in that: include: A first support (1); A positioning block (2) is arranged on the first support (1); a positioning pin (21) is arranged on a side of the positioning block (2) facing away from the first support (1) and is used for being snap-connected with a positioning hole (203) of the leaf spring (200) to be tested; A limiting mechanism (3) is arranged on the first support (1), and the limiting mechanism (3) comprises an operating rod (31), a sliding rod (32) and a pressure block (33). The operating rod (31) is rotatably arranged on the first support (1); the sliding rod (32) is slidably arranged on the first support (1), one end of the sliding rod (32) is connected to the operating rod (31), and the other end is connected to the pressure block (33). The pressure block (33) is arranged opposite to the positioning block (2) to clamp the positioning end (201) of the leaf spring (200) to be tested; A measuring block (4) is in contact with the cantilever end (202) of the leaf spring (200) to be measured, and the measuring block (4) pushes the cantilever end (202) of the leaf spring (200) to bend under the driving force of an external force; A pressure sensor (5) is connected to the measuring block (4) and both are located on the same side of the first support (1), and is used to read the elastic force of the leaf spring (200) to be measured.

2. The leaf spring force measuring jig according to claim 1, characterized in that: The first support (1) has a first side and a second side arranged opposite to each other in a first direction, the positioning block (2) is arranged on the first side of the first support (1), and the operating rod (31) is rotatably connected to the second side of the first support (1); The first support (1) is provided with a first through slot (11) in a first direction, and the sliding rod (32) is slidably connected to the first through slot (11); The limiting mechanism (3) also includes a locking block (34); the first support (1) is provided with a second through slot (12) in the second direction; the sliding rod (32) is provided with a third through slot (321) connected to the second through slot (12); the locking block (34) can pass through the third through slot (321) and be plugged and connected to the second through slot (12); the first direction intersects with the second direction.

3. The leaf spring force measuring jig according to claim 2, characterized in that: The second through slot (12) has a first width in the second direction, the third through slot (321) has a second width in the second direction, and the first width is smaller than the second width; a roller (322) is rotatably arranged in the third through slot (321) of the slide rod (32), and a first groove (341) abutting against the roller (322) is arranged on the locking block (34).

4. The leaf spring force measuring jig according to claim 3, characterized in that: The limiting mechanism (3) also includes a second support (35), on which a first driving member (36) is disposed, and a power output end of the first driving member (36) is drivingly connected to an end of the locking block (34) away from the first groove (341), so that the locking block (34) reciprocates along the first direction.

5. The leaf spring force measuring jig according to claim 1, characterized in that: The limiting mechanism (3) also includes a connecting block (37) and a spring (38), and the two oppositely arranged sides of the connecting block (37) are respectively connected to the operating rod (31) and the sliding rod (32); the first support (1) is provided with a receiving cavity (13), one end of the spring (38) is connected to the connecting block (37), and the other end extends into the receiving cavity (13) and is connected to the first support (1).

6. The leaf spring force measuring jig according to claim 1, characterized in that: The invention also comprises a first driving mechanism (6), wherein the first driving mechanism (6) comprises a third support (61), a first slide rail (62) and a second driving member (63), wherein the third support (61) is slidably arranged on the first slide rail (62), a power output end of the second driving member (63) is transmission-connected to the third support (61), and an end of the pressure sensor (5) away from the measuring block (4) is connected to the third support (61).

7. The leaf spring force measuring jig according to claim 6, characterized in that: The invention also comprises a second driving mechanism (7), wherein the second driving mechanism (7) comprises a connecting plate (71), a second slide rail (72) and a third driving member (73), wherein the connecting plate (71) has two oppositely arranged sides, one side of the connecting plate (71) is fixedly connected to the first slide rail (62), and the other side is slidably connected to the second slide rail (72), the length direction of the second slide rail (72) is parallel to the length direction of the first slide rail (62), and the power output end of the third driving member (73) is drivingly connected to the connecting plate (71).

8. The leaf spring force measuring jig according to claim 7, characterized in that: A first proximity switch (711) is provided on a side of the connecting plate (71) facing away from the second slide rail (72); the first proximity switch (711) and the second driving member (63) are control-connected; the first proximity switch (711) is used to detect a first displacement of the third support (61).

9. The leaf spring force measuring jig according to claim 7, characterized in that: The invention also comprises a working platform (8), the second slide rail (72) being arranged on the working platform (8), the working platform (8) being provided with a second proximity switch (82), the second proximity switch (82) being control-connected to the third driving member (73), and the second proximity switch (82) being used to detect a second displacement of the connecting plate (71).

10. The leaf spring force measuring jig according to claim 1, characterized in that: A second groove (41) is provided on a side of the measuring block (4) facing away from the pressure sensor (5), and the second groove (41) is snap-connected to the rotating shaft (204) of the leaf spring (200) to be measured.

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