Torque head and torque testing device
By designing the urging part and guide part of the torque head, the test failure problem caused by shrapnel deformation is solved, and the method of directly detecting the torque value is realized, which simplifies the test steps and improves the testing efficiency and accuracy.
Patent Information
- Application Number
- CN202323573311.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2033-12-26
AI Technical Summary
During the assembly process of electronic products such as mobile phones, the shrapnel is small in size and weak in structure, and it is prone to sink into the bottom of the installation groove due to deformation of the epitaxial part, resulting in the thrust machine push head unable to act on the shrapnel, resulting in the failure of torque test, and the existing technology The thrust and torque need to be calculated to calculate the torque, and the steps are cumbersome.
A torsion head is designed, including a connecting head handle, an extension, an urging part and a guide part. The urging part can be extended into the installation groove to apply force to the outer extension part. The guide part is used to judge the alignment of the locking groove, and simplify the Torque test steps and reduce the risk of test failure.
Directly detect torque values through the matching of the torque head and the torque gauge, simplifying the testing steps, improving testing efficiency, reducing repeated testing, and ensuring the accuracy and stability of torque measurement.
Smart Images
Figure CN222364683U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of torque testing, and in particular to a torque head and a torque testing device. Background Art
[0002] During the assembly process of electronic products such as mobile phones, multiple springs need to be fixed in the mounting grooves on the surface of the product. The spring includes a mounting portion and an extension portion connected to each other. The mounting portion is locked in the mounting groove by the rotation of the locking member, and the extension portion extends away from the bottom of the mounting groove and protrudes out of the product surface. The head of the locking member is provided with a locking groove, which is used to cooperate with a screwdriver to facilitate tightening or loosening the locking member.
[0003] The firmness of the connection between the spring clip and the product will directly affect the final performance of the product, so it is necessary to test the torque required to loosen the spring clip. In the related art, the thrust F required to push the spring clip to rotate is obtained by applying force to the part of the extension extending from the surface of the product through the push head of the thrust machine. The distance from the point of action of the thrust F to the axis of rotation is the torque D, and the torque required to loosen the spring clip is calculated as W = F*D. However, due to the small size of the spring clip and its weak structure, when the spring clip is subjected to force, the extension is easily deformed and sinks to the bottom of the installation slot, causing the push head to push empty, and the thrust of the push head cannot act on the spring clip, resulting in test failure. Utility Model Content
[0004] In view of this, the present application provides a torque head and a torque testing device, which can improve the problem that the spring piece is not easily subjected to thrust and improve the testing efficiency.
[0005] The embodiment of the present application provides a torque head applied to a torque meter, which is used to measure the torque generated when the spring sheet on the product to be tested rotates. The product to be tested has a mounting groove, and the spring sheet includes a mounting portion and an extension portion connected to each other. The mounting portion is locked in the mounting groove by a locking member, and the extension portion extends away from the mounting groove and extends out of the surface of the product to be tested, and the locking member has a locking groove. The torque head includes a connector handle, an extension portion, a force-applying portion, and a guide portion. One end of the connector handle is used to connect the torque meter, and the extension portion is provided at the other end of the connector handle, and the extension portion is extended along the radial direction of the connector handle. The force-applying portion is provided at one end of the extension portion away from the connector handle, and the force-applying portion is used to partially extend into the mounting groove. When the connector handle rotates with the torque meter, the force-applying portion applies force to the extension portion until the spring sheet rotates relative to the product to be tested, so that the torque meter measures the torque. The guide portion is provided at one end of the connector handle having the extension portion, and is coaxially provided with the connector handle, and the guide portion is used to be inserted into the locking groove.
[0006] In the above-mentioned torque head, when the torque test is performed on the spring piece on the product to be tested, the torque head is connected to the torque meter. When the torque head rotates with the torque meter, it can apply force to the extension part through the force-applying part to drive the spring piece to rotate, so as to test the torque when the spring piece produces rotational displacement through the torque meter. On the one hand, the torque testing device in the present application can directly detect the torque value through the cooperation of the torque head and the torque meter, without the need for calculation, thereby simplifying the test steps. On the other hand, part of the force-applying part can extend into the installation groove, so that it is convenient for the force-applying part to contact with the extension part to apply force to the spring piece, reducing the risk of test failure due to the torque head pushing empty, reducing the situation of repeated testing to improve the test efficiency. On the third hand, the setting of the guide part makes it difficult for the torque head to enter the locking groove when the guide part is not aligned with the locking groove, so as to facilitate the judgment that the guide part is not aligned with the locking groove, so as to adjust the position of the product to be tested in time. When the torque head detects the spring piece, the guide portion is inserted into the locking groove to determine whether the torque head and the spring piece are in place, thereby facilitating accurate measurement of the torque.
[0007] In at least one embodiment, the cross-section of the guide portion gradually decreases in a direction away from the connector shank.
[0008] In the above embodiment, the end of the guide portion with a smaller cross section can first enter the locking groove of the spring sheet to guide the entire guide portion to gradually enter the locking groove, thereby facilitating alignment of the torque head and the spring sheet.
[0009] In at least one embodiment, the force applying portion has a force applying surface, which is a cylindrical surface, and the force applying portion applies force to the extension portion through the force applying surface.
[0010] In the above embodiment, the force-applying surface is set as a cylindrical surface so that when the force-applying surface contacts the extension portion, the contact area between the force-applying portion and the extension portion is reduced, thereby reducing the friction between the force-applying portion and the spring piece during the force-applying process, so as to improve the accuracy of the test results.
[0011] In at least one embodiment, the force-applying portion has a force-applying surface, the force-applying surface is used to apply force to the extension portion, and the force-applying portion has a avoidance notch on a side facing away from the force-applying surface.
[0012] In the above embodiment, the setting of the avoidance notch reduces the space occupied by the force-applying part, so that the force-applying part avoids the side wall of the installation groove and other structures on the surface of the product to be tested, and increases the rotation range of the force-applying part to facilitate testing of the spring piece.
[0013] In at least one embodiment, the connector handle includes a first connecting portion, which is a hexahedral structure and is used to connect to the torque meter.
[0014] In the above embodiment, the hexahedral structure of the first connecting part can cooperate with the hexagonal mounting hole of the torque meter to transmit torque. Such a configuration can improve the stability of the connection between the first connecting part and the torque meter and improve the stability of torque transmission.
[0015] The embodiment of the present application further provides a torque testing device, which includes a bearing member and a torque head in any of the above embodiments. The bearing member is provided with a receiving groove, and the receiving groove is used to place the product to be tested.
[0016] When the torque test device is used to test the spring clip on the product to be tested, the product to be tested is placed in the receiving groove to limit the movement of the product to be tested, thereby improving the accuracy of the test. When testing different spring clips, there is no need to adjust the direction of the product to be tested in the receiving groove, which simplifies the test steps and improves the test efficiency.
[0017] In at least one embodiment, the torque testing device also includes a cover plate, which is arranged above the carrier and is used to cover the product to be tested in the receiving groove; the cover plate is provided with a guide hole, which is connected to the receiving groove and is used for the connecting head handle to pass through the cover plate.
[0018] In the above embodiment, the cover plate can limit the movement of the product to be tested in the direction of leaving the accommodating groove, so as to improve the stability of the product to be tested during the test, and the cover plate can prevent the product to be tested from being bumped. The guide hole can guide the connector handle to be installed to the position where the force-applying part can apply force to the extension part, and guide the rotation direction of the connector handle, so that the connector handle is not easy to be positionally offset during the rotation process, thereby improving the accuracy of the test.
[0019] In at least one embodiment, the connector handle has a first limiting surface, the cover plate has a second limiting surface, and the first limiting surface is used to contact the second limiting surface to limit the force-applying part from moving toward the bottom of the mounting groove.
[0020] In the above-mentioned embodiment, through the contact between the first limiting surface and the second limiting surface, the connecting head handle and the cover plate can form a limit in the axial direction of the connecting head handle, restricting the connecting head handle and the force-applying part from moving toward the bottom of the mounting groove, so that the force-applying part is not easy to apply pressure to the product to be tested in the axial direction of the connecting head handle, thereby reducing the friction force exerted on the force-applying part when rotating with the connecting head handle, thereby improving the accuracy of the test.
[0021] In at least one embodiment, a first gap is provided between an inner wall of the guide hole and an outer wall of the connecting head handle.
[0022] In the above-mentioned embodiment, the first gap is set so that when the connector handle rotates relative to the guide hole, the outer wall of the connector handle is not easy to contact the inner wall of the guide hole to generate friction, thereby reducing the torque test error.
[0023] In at least one embodiment, a avoidance groove is provided on one side of the cover plate facing the accommodating groove, the avoidance groove is connected with the accommodating groove and the guide hole, and the avoidance groove is used to accommodate the extension portion.
[0024] In the above embodiment, when the connector handle is located in the guide hole, the extension part can be located in the avoidance groove. The setting of the avoidance groove provides movement space for the extension part, reducing the risk of the extension part colliding with the cover plate during the rotation of the connector handle. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a stereoscopic diagram of a torque testing device in one embodiment of the present application.
[0026] Figure 2 yes Figure 1 Exploded view of the torque test setup in Figure 1.
[0027] Figure 3 It is a stereoscopic diagram of a torque head in one embodiment of the present application.
[0028] Figure 4 An embodiment of the present application is a partial stereoscopic diagram showing the torque head in a state of applying force to a spring on a product to be tested.
[0029] Figure 5 An embodiment of the present application is a partial cross-sectional view showing a torque head in a state of applying force to a spring on a product to be tested.
[0030] Figure 6 This is a partial cross-sectional view of a torque testing device in one embodiment of the present application showing a guide hole.
[0031] Main component symbols
[0032] Torque head 100
[0033] Connector handle 10
[0034] First connection portion 101
[0035] The second connection portion 102
[0036] The first shaft portion 1021
[0037] The second shaft portion 1022
[0038] The first limiting surface 103
[0039] Extension 20
[0040] Force applying part 30
[0041] Force application surface 301
[0042] Avoid gap 302
[0043] Second gap 303
[0044] Guide portion 40
[0045] Torque test device 200
[0046] Carrier 11
[0047] Accommodating groove 111
[0048] Loading plate 112
[0049] Support block 113
[0050] Cover 21
[0051] Guide hole 211
[0052] First gap 212
[0053] The second limiting surface 213
[0054] Avoidance slot 214
[0055] Foolproof hole 215
[0056] Limiting piece 41
[0057] Anti-fool parts 51
[0058] Products to be tested 300
[0059] Shrapnel 31
[0060] Installation section 311
[0061] Extension 312
[0062] Locking piece 32
[0063] Locking groove 321
[0064] Mounting slot 33
[0065] Rotation axis L
[0066] Midline P
[0067] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION
[0068] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.
[0069] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.
[0070] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.
[0071] It should be noted that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary and should not constitute any limitation to the present application.
[0072] During the assembly process of electronic products such as mobile phones, multiple springs need to be fixed in the mounting grooves on the surface of the product. The spring includes a mounting portion and an extension portion connected to each other. The mounting portion is locked in the mounting groove by the rotation of the locking member, and the extension portion extends away from the bottom of the mounting groove and protrudes out of the product surface. The head of the locking member is provided with a locking groove, which is used to cooperate with a screwdriver to facilitate tightening or loosening the locking member.
[0073] The firmness of the connection between the spring clip and the product will directly affect the final performance of the product, so it is necessary to test the torque required to loosen the spring clip. In the related art, the thrust F required to push the spring clip to rotate is obtained by applying force to the part of the extension extending from the surface of the product through the push head of the thrust machine. The distance from the point of action of the thrust F to the axis of rotation is the torque D, and the torque required to loosen the spring clip is calculated as W = F*D. However, due to the small size of the spring clip and its weak structure, when the spring clip is subjected to force, the extension is easily deformed and sinks to the bottom of the installation slot, causing the push head to push empty, and the thrust of the push head cannot act on the spring clip, resulting in test failure.
[0074] In view of this, an embodiment of the present application provides a torque head applied to a torque meter, which is used to measure the torque generated when a spring sheet on a product to be tested rotates. The torque head includes a connector handle, an extension portion, a force-applying portion, and a guide portion. One end of the connector handle is used to connect the torque meter, and the extension portion is provided at the other end of the connector handle, and the extension portion is provided along the radial extension of the connector handle. The force-applying portion is provided at an end of the extension portion away from the connector handle, and when the connector handle rotates with the torque meter, the force-applying portion applies force to the spring sheet until the spring sheet rotates relative to the product to be tested, so that the torque meter measures the torque. The guide portion is provided at one end of the connector handle having the extension portion, and is coaxially provided with the connector handle, and the guide portion is used to be inserted into the locking groove of the spring sheet.
[0075] In the above-mentioned torque head, when performing torque tests on different springs on the product to be tested, the torque head is connected to the torque meter. When the torque head rotates with the torque meter, it can apply force to the extension part through the force-applying part to drive the spring to rotate, so as to test the torque when the spring produces rotational displacement through the torque meter. On the one hand, the torque testing device in the present application can directly detect the torque value through the cooperation of the torque head and the torque meter, without the need for calculation, thereby simplifying the test steps. On the other hand, the force-applying part can be partially extended into the installation groove, so as to facilitate the contact between the force-applying part and the extension part to apply force to the spring, reduce the risk of test failure due to the torque head pushing empty, reduce the situation of repeated testing to improve the test efficiency. On the third hand, the setting of the guide part makes it difficult for the torque head to enter the locking groove when the guide part is not aligned with the locking groove of the spring, so as to facilitate the judgment that the guide part is not aligned with the spring, so as to adjust the position of the product to be tested in time. When the torque head detects the spring piece, the guide portion is inserted into the locking groove to determine whether the torque head and the spring piece are in place, thereby facilitating accurate measurement of the torque.
[0076] The embodiments of the present application are further described below in conjunction with the accompanying drawings.
[0077] like Figure 1 and Figure 2 As shown, an embodiment of the present application provides a torque testing device 200, which is used to measure the torque generated when the spring sheet 31 on the product to be tested 300 rotates. The torque testing device 200 includes a bearing 11 and a torque head 100, the bearing 11 is used to place the product to be tested 300, the torque head 100 is used to apply force to the spring sheet 31, and is used to connect with a torque meter (not shown) to detect torque. The torque value can be directly obtained through the torque meter, thereby reducing the calculation steps, facilitating operation, and improving test efficiency.
[0078] In some embodiments, the product to be tested 300 has a mounting slot 33, and the spring piece 31 includes a mounting portion 311 and an extension portion 312 connected to each other. The mounting portion 311 is locked in the mounting slot 33 by a locking member 32. For example, the locking member 32 is a screw, which is passed through the mounting portion 311 and is threadedly connected to the product to be tested 300. The extension portion 312 extends away from the mounting slot 33 and extends out of the surface of the product to be tested 300. For example, the mounting portion 311 is parallel to the bottom surface of the mounting slot 33, and the extension portion 312 is inclined away from the bottom surface of the mounting slot 33 until part of the extension portion 312 extends out of the surface of the product to be tested 300.
[0079] In some embodiments, the product to be tested 300 has a plurality of spring pieces 31, each spring piece 31 is fixed in the mounting groove 33 by rotation, and the spring piece 31 can rotate around the central axis of the locking member 32 when loose. The plurality of spring pieces 31 are all located on the upper surface of the product to be tested 300, and the plurality of spring pieces 31 have different orientations on the product to be tested 300. During testing, the carrier 11 is supported on the lower surface of the product to be tested 300, so that the plurality of spring pieces 31 are all facing away from the carrier 11, so that the torque head 100 cooperates with the torque meter to test the spring pieces 31.
[0080] See also Figure 2 In some embodiments, the carrier 11 has a receiving groove 111, and the receiving groove 111 is used to receive the product to be tested 300. The shape of the receiving groove 111 is substantially consistent with the outer contour of the product to be tested 300, so as to limit the position of the product to be tested 300, so that the product to be tested 300 is not easy to move in the receiving groove 111.
[0081] See also Figure 2 In some embodiments, the carrier 11 includes a carrier plate 112 and a support block 113. The carrier plate 112 has a receiving groove 111. The support block 113 is disposed at the bottom of the receiving groove 111 to support the product to be tested 300. In practical applications, the lower surface of the product to be tested 300 is often not a plane. The support block 113 can support a part of the lower surface of the product to be tested 300. The space in the receiving groove 111 where the support block 113 is not disposed can accommodate the non-planar structure of the lower surface of the product to be tested 300, thereby facilitating the placement of the product to be tested 300 on the carrier 11.
[0082] Further optionally, a plurality of support blocks 113 are provided, and the plurality of support blocks 113 can be jointly supported on the lower surface of the product to be tested 300 to improve the installation stability of the product to be tested 300 .
[0083] See also Figures 1 to 3 In some embodiments, the torque head 100 includes a connector handle 10, an extension portion 20 and a force applying portion 30. One end of the connector handle 10 is used to connect to the torque meter. The extension portion 20 is provided at the other end of the connector handle 10. The extension portion 20 is extended along the radial direction of the connector handle 10. The force applying portion 30 is provided at one end of the extension portion 20 away from the connector handle 10. The force applying portion 30 is used to partially extend into the mounting groove 33. When the connector handle 10 rotates with the torque meter, the force applying portion 30 applies force to the extension portion 312 until the spring piece 31 rotates relative to the product to be measured 300, so that the torque meter measures the torque.
[0084] For example, see Figure 4The force applying part 30 applies a thrust to the portion of the extension part 312 located in the mounting groove 33 to rotate the spring sheet 31. The force applying part 30 can extend into the mounting groove 33, so that the force applying part 30 can contact the portion of the extension part 312 located in the mounting groove 33 to apply force to the spring sheet 31.
[0085] In the related art, the push head of the thrust machine applies force to the portion of the extension 312 outside the mounting groove 33. If the extension 312 is deformed by the external force and completely enters the mounting groove 33, the push head of the thrust machine cannot contact the extension 312, which easily leads to test failure. However, the force applying part 30 in the present application can enter the mounting groove 33 to apply force to the extension 312, thereby reducing the risk of test failure due to the torque head 100 pushing empty, reducing the situation of repeated testing, and improving test efficiency.
[0086] When performing torque tests on different spring pieces 31 on the product 300 to be tested, the product 300 to be tested is placed in the receiving groove 111, the torque head 100 is connected to the torque meter, and the connector handle 10 is held against the side of one of the extensions 312 to be tested. When the connector handle 10 rotates around its rotation axis L, the force-applying portion 30 can apply a thrust to the extension 312 to drive the spring piece 31 to rotate, thereby testing the torque when the spring piece 31 generates a rotational displacement through the torque meter. In the first aspect, the torque testing device 200 in the present application can directly detect the torque value through the cooperation of the torque head 100 and the torque meter, without the need for calculation, thereby simplifying the test steps. In the second aspect, different spring pieces 31 pass through the same plane when rotating, and the plane is a plane perpendicular to the rotation axis L of the spring piece 31, that is, the direction of the thrust applied to the spring piece 31 is also in the plane, so when testing different spring pieces 31, it is sufficient to move the position of the torque head 100, without adjusting the clamping direction of the product 300 to be tested, which is convenient for improving the detection efficiency.
[0087] In some embodiments, the rotation axis L of the connector handle 10 is located in the vertical direction, and the direction of the thrust is in the horizontal direction. The rotation axis L of the connector handle 10 and the rotation axis L of the spring 31 are located on the same straight line. During the test, the connector handle 10 rotates around the rotation axis L, and the force-applying portion 30 rotates with the connector handle 10 and applies a thrust to the extension portion 312. The direction of the thrust applied by the force-applying portion 30 to the extension portion 312 is in the horizontal direction, that is, the direction of the thrust is perpendicular to the direction of the gravity of the torque head 100, which makes it difficult for the torque head 100's own gravity to affect the thrust, thereby reducing the test error and improving the accuracy of the test.
[0088] See also Figure 3 and Figure 4In some embodiments, the connector handle 10 includes a first connecting portion 101 and a second connecting portion 102 connected to each other, wherein the first connecting portion 101 is used to connect to the torque meter, and the second connecting portion 102 is connected to the extension portion 20. The first connecting portion 101 can rotate under the drive of the torque meter, and drive the extension portion 20 and the force-applying portion 30 to rotate through the second connecting portion 102.
[0089] Further optionally, the first connecting portion 101 is a hexahedral structure, which is used to cooperate with the hexagonal socket of the torque meter installation hole to transmit torque. This arrangement can improve the stability of the connection between the first connecting portion 101 and the torque meter and improve the accuracy of torque transmission.
[0090] It can be understood that in other embodiments, when the mounting hole of the torque meter is in other shapes, the first connecting portion 101 is also in other shapes, so that the first connecting portion 101 can fit tightly with the mounting hole of the torque meter to facilitate torque transmission.
[0091] See also Figure 3 and Figure 4 In some embodiments, the force applying part 30 has a force applying surface 301, which is a cylindrical surface, and the force applying part 30 applies force to the extension part 312 through the force applying surface 301. The force applying surface 301 is set as a cylindrical surface, so that when the force applying surface 301 contacts the extension part 312, the contact area between the force applying part 30 and the extension part 312 is reduced, thereby reducing the friction between the force applying part 30 and the elastic piece 31 during the process of applying force to the elastic piece 31, so as to improve the accuracy of the test result.
[0092] In another embodiment, the force-applying portion 30 has a clearance notch 302 on one side facing away from the force-applying surface 301. The provision of the clearance notch 302 reduces the space occupied by the force-applying portion 30, so that the force-applying portion 30 avoids the side wall of the mounting groove 33 and other structures on the surface of the product to be tested 300, and increases the rotation range of the force-applying portion 30, so as to facilitate testing of the spring piece 31.
[0093] In some embodiments, the cross-section of the connection between the force-applying portion 30 and the extension portion 20 is larger than the cross-section of the end of the force-applying portion 30 away from the extension portion 20. This makes it possible to improve the structural strength of the connection between the force-applying portion 30 and the extension portion 20 while reducing the volume of the force-applying portion 30, so that the connection between the force-applying portion 30 and the extension portion 20 is not easy to break.
[0094] See also Figure 3 and Figure 5In some embodiments, the torque head 100 includes a guide portion 40, which is disposed at one end of the connector handle 10 having the extension portion 20 and is coaxially disposed with the connector handle 10. The locking member 32 has a locking groove 321, which is used to cooperate with a screwdriver to facilitate tightening or loosening the locking member 32. The guide portion 40 is used to be inserted into the locking groove 321. In the embodiment with the second connecting portion 102, the guide portion 40 is connected to one end of the second connecting portion 102 away from the first connecting portion 101.
[0095] The setting of the guide part 40 makes it difficult for the torque head 100 to enter the locking groove 321 when the guide part 40 is not aligned with the locking groove 321, so that it is easy to judge that the guide part 40 is not aligned with the spring piece 31, so as to timely adjust the position of the product 300 to be tested. When the torque head 100 detects the spring piece 31, it can be judged that the torque head 100 and the spring piece 31 are in place by inserting the guide part 40 into the locking groove 321, so as to facilitate accurate measurement of the torque.
[0096] For example, when the locking member 32 is a cross-slot screw, the notch of the locking slot 321 is cross-shaped to facilitate cooperation with a cross screwdriver. By inserting the guide portion 40 into the locking slot 321, it can be determined that the rotation axis L of the locking member 32 and the rotation axis L of the torque head 100 are located on the same straight line, that is, the guide portion 40 and the spring 31 are in place.
[0097] In some embodiments, the cross section of the guide portion 40 gradually decreases in the direction away from the connector handle 10. The end of the guide portion 40 with a smaller cross section can first enter the locking groove 321 and form a avoidance with the locking groove 321, so that the guide portion 40 can approach the extension portion 312, reduce the distance between the extension portion 312 and the force applying portion 30, and then facilitate the force applying portion 30 to push the extension portion 312.
[0098] See also Figure 1 and Figure 2 In some embodiments, the torque testing device 200 further includes a cover plate 21, which is disposed above the carrier 11 and is used to cover the product to be tested 300 in the receiving groove 111. The cover plate 21 is provided with a guide hole 211, which is connected to the receiving groove 111 and is used for the connector handle 10 to pass through the cover plate 21. The connector handle 10 is rotatably disposed in the guide hole 211.
[0099] The cover plate 21 can limit the movement of the product 300 to be tested in the direction of leaving the receiving groove 111, so as to improve the stability of the product 300 to be tested during the test, and the cover plate 21 can prevent the product 300 to be tested from being bumped. The connector handle 10 is rotatably disposed in the guide hole 211, and the guide hole 211 can guide the torque head 100 to be installed to the position of the push extension 312, and guide the rotation direction of the connector handle 10, so that the connector handle 10 is not easy to be offset during the rotation process, thereby improving the accuracy of the test.
[0100] In some embodiments, the shape of the guide hole 211 is substantially the same as the projection shape of the torque head 100 along the direction of the rotation axis L, so that the torque head 100 can contact the extension portion 312 through the guide hole 211 .
[0101] See also Figures 3 to 6 In some embodiments, a first gap 212 is provided between the inner wall of the guide hole 211 and the outer wall of the connector handle 10. The first gap 212 is provided so that when the connector handle 10 rotates relative to the guide hole 211, the outer wall of the connector handle 10 is not likely to contact the inner wall of the guide hole 211 to generate friction, thereby reducing the torque test error.
[0102] See also Figure 1 , Figure 3 and Figure 6 In the embodiment with the cover plate 21, the connector handle 10 has a first limiting surface 103, and the cover plate 21 has a second limiting surface 213. The first limiting surface 103 is used to contact the second limiting surface 213 to limit the force applying part 30 from moving toward the bottom of the mounting groove 33.
[0103] Through the contact between the first limiting surface 103 and the second limiting surface 213, the connector handle 10 and the cover plate 21 can be limited in the axial direction of the connector handle 10, restricting the connector handle 10 and the force-applying portion 30 from moving toward the bottom of the mounting groove 33, thereby making it difficult for the force-applying portion 30 to apply pressure to the product to be tested 300 in the axial direction of the connector handle 10, thereby reducing the friction force applied to the force-applying portion 30 when rotating with the connector handle 10, thereby improving the accuracy of the test.
[0104] In the embodiment with the second connection part 102 and the guide hole 211, part of the second connection part 102 is rotatably located in the guide hole 211. The second connection part 102 is arranged in a stepped shaft shape, and the second connection part 102 includes a first shaft part 1021 and a second shaft part 1022, the diameter of the first shaft part 1021 is greater than the diameter of the second shaft part 1022, and the first limiting surface 103 is arranged at the connection between the first shaft part 1021 and the second shaft part 1022, and the first limiting surface 103 is located at the end surface of the first shaft part 1021 facing the second shaft part 1022, that is, the first limiting surface 103 faces the product 300 to be tested.
[0105] The second limiting surface 213 is located on the inner wall of the guide hole 211, and the second limiting surface 213 faces away from the product to be tested 300, so that when the second connecting portion 102 is inserted into the guide hole 211 from the guide hole 211, the first limiting surface 103 can contact the second limiting surface 213 to limit the relative position of the torque head 100 and the product to be tested 300.
[0106] See also Figure 3 , Figure 4 and Figure 6 In some embodiments, when the first limiting surface 103 contacts the second limiting surface 213, a second gap 303 is formed between the force-applying portion 30 and the bottom surface of the mounting groove 33 along the direction of the rotation axis L of the connecting head handle 10. The formation of the second gap 303 can make it difficult for the product 300 to be tested to contact the force-applying portion 30, reduce the friction force on the force-applying portion 30 during rotation, and improve the accuracy of the test.
[0107] In the embodiment with the guide portion 40, when the first limiting surface 103 contacts the second limiting surface 213, there is a gap between the outer portion of the guide portion 40 and the locking groove 321, that is, the guide portion 40 does not contact the inner wall of the locking groove 321. This makes it difficult for the guide portion 40 to generate friction with the spring sheet 31, reducing the impact on the torque test.
[0108] In some embodiments, a side of the cover plate 21 facing the receiving groove 111 is provided with an avoidance groove 214, the avoidance groove 214 is connected with the receiving groove 111 and the guide hole 211, and the avoidance groove 214 is used to accommodate the extension 20. When the connector handle 10 is located in the guide hole 211, the extension 20 can be located in the avoidance groove 214. The setting of the avoidance groove 214 provides a movement space for the extension 20, reducing the risk of the extension 20 colliding with the cover plate 21 during the rotation of the connector handle 10.
[0109] See also Figure 2 In some embodiments, the torque testing device 200 further includes a stopper 41, at least two of which are provided, one end of each stopper 41 being inserted into the carrier 11, and the other end being inserted into the cover plate 21. By connecting the cover plate 21 and the carrier 11 with at least two stoppers 41, the cover plate 21 and the carrier 11 can be restricted from moving in a direction perpendicular to the rotation axis L of the connector handle 10, so that the position of the guide hole 211 is not easy to move, and the influence of the movement of the guide hole 211 on the position of the connector handle 10 is reduced.
[0110] Alternatively, two limiting members 41 are provided, and the two limiting members 41 are respectively provided on both sides of the length direction of the supporting member 11 to limit the supporting member 11 and the cover plate 21 .
[0111] In some embodiments, the limiting member 41 is a limiting pin, and the cover plate 21 and the carrier 11 are connected by the limiting pin to facilitate the disassembly and assembly of the carrier 11 and the cover plate 21.
[0112] See also Figure 2 In some embodiments, the torque testing device 200 also includes an anti-foolproofing component 51, and the cover plate 21 is also provided with an anti-foolproofing hole 215, which is located on one side of the center line P of the cover plate 21, and one end of the anti-foolproofing component 51 is connected to the bearing component 11, and the other end is inserted into the anti-foolproofing hole 215.
[0113] On one hand, the foolproof member 51 is disposed on one side of the center line P of the cover plate 21, so that the cover plate 21 is not easily installed on the carrier 11 when it is placed in the wrong direction, which is conducive to the accurate placement of the cover plate 21. On the other hand, the foolproof member 51 can connect the cover plate 21 and the carrier 11, so that the carrier 11 and the cover plate 21 are not easily offset from each other, which is conducive to improving the accuracy of the test.
[0114] Optionally, the foolproof component 51 is a foolproof pin, which is detachably connected to the carrier 11 and the cover plate 21 to facilitate assembly and disassembly of the cover plate 21 and the carrier 11 .
[0115] In some embodiments, the torque testing device 200 further includes a torque meter, which is connected to the connector handle 10. For example, the torque meter can be a handheld torque meter.
[0116] During the detection, a preset value can be set for the torque meter first, and whether the spring piece 31 becomes loose under the action of the preset value can be detected, so as to determine whether the spring piece 31 meets the locking requirements; or, a torque meter can be used to drive the torque head 100 to rotate, and the detection value of the torque meter when the spring piece 31 rotates can be detected, and whether the spring piece 31 meets the locking requirements can be determined based on whether the detection value exceeds the preset value.
[0117] The torque testing device 200 in the present application can test multiple springs 31 by clamping the product 300 to be tested once, and can directly detect the torque value through the cooperation between the torque head 100 and the torque meter, without the need for calculation, thus simplifying the test steps. During the test, the force applying part 30 can extend into the installation slot 33 to apply force to the extension part 312, thereby reducing the risk of the torque head 100 pushing empty, reducing the situation of repeated testing and improving the test efficiency.
[0118] In addition, those skilled in the art may also make other changes in the present application. Of course, these changes made based on the present application should be included in the scope disclosed in the present application.
Claims
1. A torque head, applied to a torque meter, for measuring the torque generated by the rotation of a spring sheet on a product to be tested, wherein the product to be tested has a mounting slot, the spring sheet comprises a mounting portion and an extension portion connected to each other, the mounting portion is locked in the mounting slot by a locking member, the extension portion extends away from the mounting slot and extends out of the surface of the product to be tested, the locking member has a locking slot, and is characterized in that: The torque head comprises: A connecting head handle, one end of which is used to connect to the torque meter; An extension portion is provided at the other end of the connector handle, and the extension portion is extended along the radial direction of the connector handle; a force-applying portion, disposed at an end of the extension portion away from the connector handle, the force-applying portion being used to partially extend into the mounting slot, and when the connector handle rotates with the torque meter, the force-applying portion applies force to the extension portion until the spring sheet rotates relative to the product to be tested, so that the torque meter measures the torque; and A guide portion is arranged at one end of the connector handle having the extension portion and is coaxially arranged with the connector handle. The guide portion is used to be inserted into the locking groove.
2. The torque head according to claim 1, characterized in that: Along the direction away from the connecting head handle, the cross section of the guide portion gradually decreases.
3. The torque head according to claim 1, characterized in that: The force applying portion has a force applying surface, which is a cylindrical surface, and the force applying portion applies force to the extension portion via the force applying surface.
4. The torque head according to claim 1, characterized in that: The force-applying portion has a force-applying surface, and the force-applying surface is used to apply force to the extension portion. The force-applying portion has a avoidance notch on a side facing away from the force-applying surface.
5. The torque head according to claim 1, characterized in that: The connecting head handle includes a first connecting portion, which is a hexahedral structure and is used for connecting with the torque meter.
6. A torque testing device, characterized in that: It comprises a bearing member and a torque head as claimed in any one of claims 1 to 5, wherein the bearing member is provided with a receiving groove, and the receiving groove is used for placing the product to be tested.
7. The torque testing device according to claim 6, characterized in that: The torque testing device also includes a cover plate, which is arranged above the supporting member and is used to cover the product to be tested in the receiving groove; the cover plate is provided with a guide hole, which is connected to the receiving groove and is used for the connector handle to pass through the cover plate.
8. The torque testing device according to claim 7, characterized in that: The connector handle has a first limiting surface, and the cover plate has a second limiting surface. The first limiting surface is used to contact the second limiting surface to limit the force-applying portion from moving toward the bottom of the mounting groove.
9. The torque testing device according to claim 7, characterized in that: A first gap is provided between the inner wall of the guide hole and the outer wall of the connector handle.
10. The torque testing device according to claim 7, characterized in that: A relief groove is provided on one side of the cover plate facing the accommodating groove, the relief groove is communicated with the accommodating groove and the guide hole, and the relief groove is used to accommodate the extension portion.