Shrapnel test fixture and test device
By designing a detachable and connected push rod structure, the problem of narrow applicability of existing shrapnel testing devices is solved, and the testing of multiple types of shrapnel is achieved, reducing the testing cost and improving accuracy.
Patent Information
- Application Number
- CN202421532908.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-06-28
AI Technical Summary
The existing shrapnel test device can only test shrapnel of the same model and cannot be adjusted according to the position of the elastic arm, resulting in narrow applicability and high testing cost.
A shrapnel testing tool is designed, including a positioning seat, a push rod and a return spring. The push rod is composed of a first rod part and a second rod part that can be detachably connected. The first rod part of the required length is selected according to different shrapnel selection to be installed on the second rod part to adapt to various types of shrapnel testing.
Through this design, the applicability of the test device is improved, and it can adapt to shrapnel testing of multiple models, reduce the testing cost, and improve the accuracy of the test results.
Smart Images
Figure CN222719135U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of detection technology, and in particular to a shrapnel testing tool and a testing device. Background Art
[0002] There are many shrapnel used in automobiles, for example, shrapnel that activates the protection of drivers and passengers when the car collides, shrapnel that adjusts seats, and shrapnel of electronic components such as contactors and relays. Among them, the shrapnel includes a substrate and an elastic arm that are connected in sequence. During the use of the shrapnel, the elastic arm needs to bend repeatedly relative to the substrate. Therefore, the number of times the elastic arm can be bent and the elastic force are crucial. When the reliability of the elastic arm does not meet the requirements, it will cause the elastic arm to break prematurely during use, or the elasticity will be weakened or even fail. Based on this, in order to ensure that the shrapnel meets the use requirements of the relevant working environment, it is necessary to perform fatigue testing on the shrapnel.
[0003] The fatigue test of the shrapnel is mainly carried out by repeatedly applying pressure to the elastic arm through the push rod of the test device, so that the shrapnel is repeatedly bent relative to the substrate, thereby completing the test of the number of times the shrapnel can be bent and the elastic force. The positions of the elastic arms of different types of shrapnel relative to the substrate are different, and the thicknesses of different types of shrapnel are also different, which results in different positions of the elastic arms of the shrapnel relative to the push rod after the shrapnel to be tested is fixed on the test device. As a result, the test device can only test the same type of shrapnel and cannot be adjusted according to the position of the elastic arm, and its adaptability is relatively narrow. Finally, during the test, different test devices need to be configured for different types of shrapnel, resulting in high testing costs. Utility Model Content
[0004] The embodiments of the present application provide a shrapnel testing tool and a testing device, which can solve the problem that the shrapnel testing device can only test shrapnel of the same model, resulting in its narrow applicability.
[0005] In the first aspect, an embodiment of the present application provides a spring clip testing fixture, which is applied to a spring clip testing device, and the testing fixture includes a positioning seat, a push rod and a return spring; the positioning seat has a first surface, and the first surface is configured to be arranged opposite to the spring clip; the push rod includes a first rod portion and a second rod portion, and the first rod portion and the second rod portion are slidably arranged on the positioning seat, one end of the first rod portion is a force-applying end, and the other end is detachably connected to one end of the second rod portion, and the other end of the second rod portion is a transmission end, the force-applying end is configured to abut against the spring clip, and the transmission end is configured to be transmission-connected to a linear drive mechanism of the spring clip testing device; the return spring is sleeved on the first rod portion and / or the second rod portion, and the return spring is configured to deform after the push rod moves, and the restoring force of the deformation is used to drive the push rod back.
[0006] In one embodiment, a threaded hole is provided on the first rod portion, and the second rod portion includes a main body and a bolt, and the rod portion of the bolt passes through the main body and is threadedly connected to the threaded hole.
[0007] In one embodiment, the main body includes a first section and a second section connected in sequence, an end of the first section away from the second section is slidably matched with the positioning seat, an end of the second section away from the first section is a transmission end, and the cross-sectional area of the second section is larger than the cross-sectional area of the first section, and the head of the bolt sinks into the second section.
[0008] In one embodiment, the positioning seat also has a second surface arranged opposite to the first surface, and the positioning seat is provided with a first through hole, a mounting groove and a second through hole which are connected in sequence, the first through hole passes through the first surface, the second through hole passes through the second surface, the first rod portion is passed through the first through hole, and the second rod portion is passed through the second through hole; the reset spring is located in the mounting groove, and its two ends are respectively abutted against the groove wall of the mounting groove and the push rod.
[0009] In one embodiment, the push rod also includes a connecting disk, which is located in the installation groove and is sleeved on the first rod portion or the second rod portion; one end of the return spring close to the first surface abuts against the groove wall of the installation groove, and the other end abuts against the connecting disk.
[0010] In one embodiment, the push rod further includes a connecting screw, and the connecting disk is sleeved on the second rod portion; the connecting screw is threadedly connected to the connecting disk, and the rod end of the connecting screw abuts against the outer peripheral surface of the second rod portion.
[0011] In one embodiment, the push rod further includes a connecting screw, and the connecting disk is sleeved on the second rod portion; the rod end of the connecting screw passes through one side of the connecting disk and is threadedly connected to the second rod portion.
[0012] In one embodiment, the shrapnel testing tool further includes a fixing screw, which is disposed on the first surface and threadedly connected to the positioning seat, and an end of the head of the fixing screw close to the first surface is configured to abut against the shrapnel.
[0013] In one embodiment, a clearance groove is provided on the first surface. The clearance groove is arranged opposite to the first rod portion along the moving direction of the first rod portion. The clearance groove is configured to accommodate the elastic arm of the spring sheet.
[0014] In the second aspect, an embodiment of the present application provides a shrapnel testing device, which includes a workbench, a linear drive structure and the aforementioned shrapnel testing tool; the linear drive structure is arranged on the workbench; the shrapnel testing tool is arranged on the workbench; wherein the transmission end is transmission-connected to the power output end of the linear drive structure.
[0015] Beneficial effects of the embodiments of the present application:
[0016] In the embodiment of the present application, the push rod is provided with a first rod portion and a second rod portion that are detachably connected to each other, so that the first rod portion of a required length can be selected and installed on the second rod portion according to different spring pieces, and the push rod can be adapted to the testing of spring pieces of various models. In this way, the applicability of the testing device can be improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.
[0018] Figure 1 is a schematic structural diagram of a shrapnel testing tool provided in an embodiment of the present application;
[0019] Figure 2 is a side view of a shrapnel testing tool provided in an embodiment of the present application;
[0020] Figure 3 is along Figure 2 Sectional view of AA in the middle;
[0021] Figure 4 It is a schematic diagram of the cooperation between the spring piece testing tool and a spring piece provided in the embodiment of the present application;
[0022] Figure 5 is a schematic diagram of the cooperation between the spring piece testing tool provided in the embodiment of the present application and another spring piece;
[0023] Figure 6 It is a schematic diagram of the structure of the push rod provided in the embodiment of the present application.
[0024] Description of reference numerals:
[0025] 001-Shrapnel test tooling;
[0026] 011-positioning seat; 111-first surface; 112-second surface; 113-first through hole; 114-installation groove; 115-second through hole; 116-avoidance groove;
[0027] 012-push rod; 121-first rod; 1211-force-applying end; 122-second rod; 1221-transmission end; 1222-main body; 12221-first section; 12222-second section; 1223-bolt; 123-connecting plate; 124-connecting screw;
[0028] 013-return spring; 014-fixing screw.
[0029] 002-shrapnel; 021-elastic arm. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only 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 those skilled in the art without creative work are within the scope of protection of this application.
[0031] In addition, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0032] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0033] In the description of the embodiments of the present application, words such as "example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "example" or "for example" in the embodiments of the present application is not to be interpreted as being more preferred or having more advantages than another embodiment or design. The use of words such as "example" or "for example" is intended to present relative concepts in a clear manner.
[0034] To facilitate understanding of the scheme of the present application, the spline curves and arrows used in the drawings are explained here: the components indicated by the spline curves without arrows are solid components, that is, components with solid structures; the components indicated by the spline curves with arrows are virtual components, that is, components without solid structures.
[0035] See also Figures 1 to 3 , Figure 1001 is a structural schematic diagram of a shrapnel test fixture 001 provided in an embodiment of the present application. The embodiment of the present application provides a shrapnel test fixture 001, which is applied to a shrapnel test device, and includes a positioning seat 011, a push rod 012 and a reset spring 013. The positioning seat 011 has a first surface 111, and the first surface 111 is configured to be arranged opposite to the shrapnel. The push rod 012 includes a first rod portion 121 and a second rod portion 122. The first rod portion 121 and the second rod portion 122 are slidably arranged on the positioning seat 011. One end of the first rod portion 121 is a force-applying end 1211, and the other end is detachably connected to one end of the second rod portion 122. The other end of the second rod portion 122 is a transmission end 1221. The force-applying end 1211 is configured to abut against the shrapnel. The transmission end 1221 is configured to be transmission-connected to a linear drive mechanism of the shrapnel test device. The reset spring 013 is sleeved on the first rod portion 121 and / or the second rod portion 122. The return spring 013 is configured to be deformed after the push rod 012 moves, and the restoring force of the deformation is used to drive the push rod 012 to return to its original position.
[0036] It can be understood that the spring piece can be fixed to the first surface 111 or to other components. The elastic arm of the spring piece is arranged opposite to the force-applying end 1211. The power source of the spring piece testing device pushes the push rod 012 to move so that the force-applying end 1211 pushes the elastic arm; then, the reset spring 013 drives the push rod 012 to return. In this way, the force-applying end 1211 repeatedly pushes the elastic arm to test the spring piece.
[0037] There are many ways to install the return spring 013. The two ends of the return spring 013 can be respectively in contact with the positioning seat 011 and the push rod 012. At this time, when the push rod 012 pushes the spring sheet, the return spring 013 is in a compressed state; the two ends of the return spring 013 can also be respectively connected to the positioning seat 011 and the push rod 012. Specifically, the return spring 013 is in contact with the first rod portion 121, or with the second rod portion 122. At this time, when the push rod 012 pushes the spring sheet, the return spring 013 can be in a compressed state or in a stretched state.
[0038] Exemplarily, the first rod portion 121 and the second rod portion 122 may be slidably disposed on the positioning seat 011 via a hole-shaft matching structure, or may be slidably disposed on the positioning seat 011 via a slot-block matching structure.
[0039] In addition, there are many ways to detachably connect the first rod 121 and the second rod 122. For example, the first rod 121 can be threadedly connected to the second rod 122; for another example, the first rod 121 is inserted into the second rod 122, a screw is threadedly connected to the second rod 122, and the rod end of the screw abuts against the first rod 121.
[0040] In this embodiment, by configuring the push rod 012 to include a first rod portion 121 and a second rod portion 122 that are detachably connected to each other, the first rod portion 121 of a required length can be selected and installed on the second rod portion 122 according to different spring pieces, thereby enabling the push rod 012 to be adapted to the testing of spring pieces of various types. In this way, the applicability of the testing device can be improved.
[0041] Specifically, when the deflection of the elastic arm of the spring relative to the substrate is large, a shorter first rod portion 121 may be configured, such as Figure 4 As shown, Figure 4 001 is a schematic diagram of the spring testing tool 001 provided in the embodiment of the present application and a spring; when the deflection of the spring arm relative to the substrate is small, a longer first rod 121 can be configured, such as Figure 5 As shown, Figure 5 It is a schematic diagram of the cooperation between the shrapnel testing tool 001 provided in the embodiment of the present application and another shrapnel.
[0042] In addition, in this embodiment, through the above-mentioned arrangement, only the portion of the push rod 012 used to push the spring piece is replaced without replacing the entire push rod 012, thereby eliminating the need to disassemble the transmission connection between the push rod 012 and the linear drive mechanism of the testing device, thereby improving the adjustment efficiency of the push rod 012.
[0043] See also Figure 6 , Figure 6 1 is a schematic diagram of the structure of the push rod 012 provided in an embodiment of the present application. In one embodiment, a threaded hole is provided on the first rod portion 121. The second rod portion 122 includes a main body 1222 and a bolt 1223. The rod portion of the bolt 1223 passes through the main body 1222 and is threadedly connected to the threaded hole.
[0044] In this embodiment, with the above arrangement, on the one hand, the push rod 012 is simple as a whole and easy to assemble and disassemble; on the other hand, the push rod 012 is an axisymmetric structure, so that the push rod 012 can be evenly stressed during the test of the spring piece, thereby prolonging its service life.
[0045] See also Figure 6 In one embodiment, the main body 1222 includes a first section 12221 and a second section 12222 connected in sequence. One end of the first section 12221 away from the second section 12222 is slidably matched with the positioning seat 011. One end of the second section 12222 away from the first section 12221 is the transmission end 1221. The cross-sectional area of the second section 12222 is greater than the cross-sectional area of the first section 12221. The head of the bolt 1223 is sunk into the second section 12222.
[0046] In this embodiment, through the above arrangement, on the one hand, the push rod 012 can have a larger transmission end 1221, thereby improving the operability of the connection between the push rod 012 and the linear drive mechanism of the test device and the stability of power transmission; on the other hand, the push rod 012 can also form a stop fit with the positioning seat 011 through the second section 12222, thereby preventing the push rod 012 from moving too far when the output stroke of the linear drive mechanism is unstable. In this way, the accuracy of the shrapnel test results can be improved.
[0047] See also Figure 3 In one embodiment, the sliding cooperation between the first rod portion 121 and the second rod portion 122 and the positioning seat 011 adopts the following scheme. Specifically, the positioning seat 011 also has a second surface 112 arranged opposite to the first surface 111. The positioning seat 011 is provided with a first through hole 113, a mounting groove 114 and a second through hole 115 which are connected in sequence. The first through hole 113 penetrates the first surface 111. The second through hole 115 penetrates the second surface 112. The first rod portion 121 is penetrated in the first through hole 113. The second rod portion 122 is penetrated in the second through hole 115. At this time, the reset spring 013 is located in the mounting groove 114, and its two ends are respectively abutted against the groove wall of the mounting groove 114 and the push rod 012.
[0048] In this embodiment, through the above arrangement, the positioning seat 011 can guide and support the two ends of the push rod 012, thereby improving the certainty of the movement direction of the push rod 012, and further improving the accuracy of the shrapnel test results.
[0049] See also Figure 6 In one embodiment, the push rod 012 further includes a connecting plate 123. The connecting plate 123 is located in the mounting groove 114. The connecting plate 123 is sleeved on the first rod portion 121 or the second rod portion 122. One end of the return spring 013 close to the first surface 111 abuts against the groove wall of the mounting groove 114, and the other end abuts against the connecting plate 123. Figure 3 shown.
[0050] Optionally, when the reset spring 013 is in the original state, the side of the connection plate 123 facing away from the first surface 111 contacts the groove wall of the installation groove 114 close to the second surface 112. In this way, when the spring piece test fixture 001 is installed on the test device, when the second rod portion 122 is located below the gravity direction of the first rod portion 121, the position of the second rod portion 122 can be controlled, thereby improving the operability of the transmission connection between the second rod portion 122 and the linear drive mechanism.
[0051] In this embodiment, through the above arrangement, a portion that contacts the return spring 013 can be formed on the surface of the push rod 012, and the overall structure of the push rod 012 is relatively simple, which is convenient for manufacturing and maintenance.
[0052] See also Figure 6 In one embodiment, the push rod 012 further includes a connecting screw 124. The connecting disk 123 is sleeved on the second rod portion 122. The connecting screw 124 is threadedly connected to the connecting disk 123, and the rod end of the connecting screw 124 abuts against the outer peripheral surface of the second rod portion 122.
[0053] In another embodiment, the push rod 012 further includes a connecting screw 124 , and the connecting disk 123 is sleeved on the second rod portion 122 ; the rod end of the connecting screw 124 passes through one side of the connecting disk 123 and is threadedly connected to the second rod portion 122 .
[0054] In this embodiment, the connecting plate 123 is fixed to the second push rod 012 by connecting screws 124, so that the structure of fixing the connecting plate 123 to the second rod portion 122 is simple, thereby improving the ease of operation and convenience of maintenance of fixing the connecting plate 123 to the push rod 012.
[0055] See also Figure 1 In one embodiment, the shrapnel testing tool 001 further includes a fixing screw 014. The fixing screw 014 is disposed on the first surface 111 and is threadedly connected to the positioning seat 011. The end of the head of the fixing screw 014 close to the first surface 111 is configured to abut against the shrapnel.
[0056] It can be understood that a through hole is provided on the base plate of the spring sheet, and the rod of the fixing screw 014 passes through the through hole and is threadedly connected with the positioning seat 011, and the head of the fixing screw 014 is pressed on the base plate.
[0057] In addition, there can be multiple fixing screws 014. For example, there can be two fixing screws 014, which are respectively located at two ends of the length direction of the spring.
[0058] In this embodiment, the above arrangement can simplify the structure of the fixing spring piece, thereby improving the operability and fixing efficiency of the fixing spring piece.
[0059] See also Figure 1 In one embodiment, the first surface 111 is provided with a clearance groove 116. Along the moving direction of the first rod portion 121, the clearance groove 116 is arranged opposite to the first rod portion 121. The clearance groove 116 is configured to accommodate the elastic arm of the spring sheet.
[0060] It is understandable that after some types of spring pieces are installed on the first surface 111 , their elastic arms are structures extending toward the second surface 112 , and thus will interfere with the positioning seat 011 .
[0061] Based on this, in this embodiment, through the above-mentioned arrangement, the elastic arm extending toward the second surface 112 can be located in the air avoidance groove, thereby improving the applicability of the shrapnel testing tool 001.
[0062] Accordingly, an embodiment of the present application further provides a shrapnel testing device. The shrapnel testing device includes a workbench, a linear drive structure, and the aforementioned shrapnel testing tool 001. The linear drive structure is arranged on the workbench. The shrapnel testing tool 001 is arranged on the workbench. Among them, the transmission end 1221 is transmission-connected with the power output end of the linear drive structure.
[0063] It can be understood that the linear drive structure includes but is not limited to a cam mechanism, a gear rack mechanism, a linear motor, and a crank connecting rod mechanism.
[0064] In this embodiment, by using the aforementioned spring-clip test fixture 001, the first rod 121 of a required length can be selected and installed on the second rod 122 according to different springs, so that the push rod 012 can be adapted to the testing of springs of various types. In this way, the applicability of the testing device can be improved.
[0065] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of the present application. At the same time, for technical personnel in this field, according to the idea of the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.
Claims
1. A shrapnel testing tool, characterized in that: The test fixture is applied to a shrapnel test device, and the test fixture comprises: A positioning seat having a first surface, wherein the first surface is configured to be arranged opposite to the elastic sheet; A push rod, comprising a first rod portion and a second rod portion, wherein the first rod portion and the second rod portion are slidably disposed on the positioning seat, one end of the first rod portion is a force-applying end, and the other end is detachably connected to one end of the second rod portion, and the other end of the second rod portion is a transmission end, wherein the force-applying end is configured to abut against the spring sheet, and the transmission end is configured to be transmission-connected to a linear drive mechanism of the spring sheet testing device; A return spring is sleeved on the first rod portion and / or the second rod portion, and the return spring is configured to be deformed after the push rod moves, and the restoring force of the deformation is used to drive the push rod to return to its original position.
2. The shrapnel testing tool according to claim 1, characterized in that: The first rod portion is provided with a threaded hole, and the second rod portion includes a main body and a bolt, and the rod portion of the bolt passes through the main body and is threadedly connected with the threaded hole.
3. The shrapnel testing tool according to claim 2, characterized in that: The main body includes a first section and a second section connected in sequence, wherein one end of the first section away from the second section is slidably matched with the positioning seat, one end of the second section away from the first section is the transmission end, and the cross-sectional area of the second section is greater than the cross-sectional area of the first section, and the head of the bolt is sunk into the second section.
4. The shrapnel testing tool according to claim 1, characterized in that: The positioning seat also has a second surface arranged opposite to the first surface, and the positioning seat is provided with a first through hole, a mounting groove and a second through hole which are connected in sequence, the first through hole passes through the first surface, the second through hole passes through the second surface, the first rod portion is passed through the first through hole, and the second rod portion is passed through the second through hole; the return spring is located in the mounting groove, and its two ends are respectively abutted against the groove wall of the mounting groove and the push rod.
5. The shrapnel testing tool according to claim 4, characterized in that: The push rod also includes a connecting disk, which is located in the installation groove and is sleeved on the first rod portion or the second rod portion; one end of the return spring close to the first surface abuts against the groove wall of the installation groove, and the other end abuts against the connecting disk.
6. The shrapnel testing tool according to claim 5, characterized in that: The push rod also includes a connecting screw, and the connecting disk is sleeved on the second rod portion; the connecting screw is threadedly connected to the connecting disk, and the rod end of the connecting screw abuts against the outer peripheral surface of the second rod portion.
7. The shrapnel testing tool according to claim 5, characterized in that: The push rod also includes a connecting screw, and the connecting disk is sleeved on the second rod portion; the rod end of the connecting screw penetrates one side of the connecting disk and is threadedly connected to the second rod portion.
8. The shrapnel testing tool according to any one of claims 1 to 7, characterized in that: The shrapnel testing tool further includes a fixing screw, which is disposed on the first surface and threadedly connected to the positioning seat. An end of the head of the fixing screw close to the first surface is configured to abut against the shrapnel.
9. The shrapnel testing tool according to claim 8, characterized in that: The first surface is provided with a clearance groove, and along the moving direction of the first rod portion, the clearance groove is arranged opposite to the first rod portion, and the clearance groove is configured to accommodate the elastic arm of the spring sheet.
10. A shrapnel testing device, characterized in that: include: Workbench; A linear drive mechanism, arranged on the workbench; And, the shrapnel testing tool as described in any one of claims 1 to 9 is arranged on the workbench; Wherein, the transmission end is transmission-connected to the power output end of the linear drive mechanism.