Thread end positioning jig and testing device

Abstract

The utility model discloses a thread end positioning jig and a testing device, the thread end positioning jig comprises a base, the base is provided with a plurality of thread end limiting areas which are arranged in parallel at intervals, and each thread end limiting area is provided with a positioning wall used for positioning the end part of a thread end; and the upper mold assembly comprises an upper mold arranged on the base in a liftable manner and a plurality of test needles arranged on the upper mold, and the plurality of test needles are arranged at intervals and are located above the plurality of thread end limiting areas in a one-to-one correspondence manner. When the thread end positioning jig is used, radial positioning and axial positioning of the thread ends can be realized by placing the thread ends in the thread end limiting areas and enabling the end parts of the thread ends to be in contact with the positioning wall, so that after the upper die is driven to descend, the test needles can be accurately in contact with the tin immersion parts of the thread ends, and the accuracy of the tin immersion of the thread ends is improved. Therefore, the connection between the to-be-tested product and the test equipment is realized, the operation is simple, and the test efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a wire end positioning fixture and testing device. Background Technology

[0002] In the headphone manufacturing process, it is necessary to test some components, such as the speaker. In related technologies, the method for connecting the product under test to the testing equipment is as follows: the insulation of the signal cable of the product under test is cut open, with a cut length of approximately 8mm. Then, the exposed wire core is tinned, with a tinned portion of approximately 1-2mm in length. By clamping the tinned portion of the signal cable end with a conductive clip on the testing equipment, the signal cable can be connected to the testing equipment.

[0003] However, in the above methods, because the size of the tin-dipped portion of the signal line is small, the conductive clips are not easy to clamp onto the tin-dipped portion, which affects the testing efficiency. In addition, multiple conductive clips are needed to clamp the multiple signal lines of the product under test one by one, which is cumbersome to operate. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a simple-to-operate wire end positioning fixture, which can improve testing efficiency.

[0005] This utility model also proposes a testing device having the above-mentioned thread end positioning fixture.

[0006] According to a first aspect of the present invention, a wire end positioning fixture includes: a base, wherein the base is provided with a plurality of wire end limiting areas arranged at intervals and side by side, the wire end limiting areas having positioning walls for positioning the ends of the wire ends; and an upper mold assembly, wherein the upper mold assembly includes an upper mold that is vertically and elliptically disposed on the base, and a plurality of test pins disposed on the upper mold, the plurality of test pins being arranged at intervals and correspondingly located above the plurality of wire end limiting areas.

[0007] The thread positioning fixture according to the embodiments of this utility model has at least the following beneficial effects:

[0008] In use, this wire end positioning fixture allows for the initial placement of multiple wire ends in their respective wire end limiting areas, ensuring that the ends of each wire end contact the positioning wall. This achieves radial and axial positioning of the wire ends, enabling accurate and convenient positioning and aligning the soldered portion of the wire end with the test probe. Then, driving the upper mold downwards lowers the test probe until it contacts the soldered portion of the wire end. The test probe can be connected to relevant testing equipment via a signal line, enabling testing of the product under test. By placing the wire ends in their respective limiting areas and ensuring their ends contact the positioning wall, radial and axial positioning of the wire ends is achieved. Driving the upper mold downwards then allows the test probe to accurately contact the soldered portion of the wire end, thus connecting the product under test to the testing equipment. The operation is simple and improves testing efficiency.

[0009] According to some embodiments of the present invention, the wire end limiting area is a wire end insertion hole, the wire end insertion hole has an inlet end, and the positioning wall is disposed opposite to the inlet end;

[0010] The base has a downwardly extending through area on its upper surface, which communicates with each of the wire insertion holes. The test probe is configured to move downward and extend into the through area.

[0011] According to some embodiments of the present invention, the wire end socket has a reduced diameter section, the inlet end is the starting end of the reduced diameter section, and the diameter of the reduced diameter section gradually decreases along the direction from the inlet end to the positioning wall.

[0012] According to some embodiments of the present invention, the line end limiting area is a positioning groove, the positioning groove has an upwardly facing opening, and along the length direction of the positioning groove, one end of the positioning groove is an open structure, and the other end has the positioning wall.

[0013] According to some embodiments of this utility model, the test needle is an elastic needle.

[0014] According to some embodiments of the present invention, the thread positioning fixture further includes a lifting actuator, which is disposed on the base and connected to the upper mold via a transmission. The lifting actuator can operably drive the upper mold to rise and fall.

[0015] According to some embodiments of the present invention, the lifting actuator includes a vertical guide rod disposed on the base, an elastic reset member disposed on the base, and a handle that is drively connected to the upper mold; the upper mold has a guide hole for the vertical guide rod to pass through, and the elastic reset member is used to connect with the upper mold and can provide an upward elastic force to the upper mold;

[0016] The handle has a first position and a second position; when the handle is in the first position, the upper mold is supported by the elastic reset member and is located at a first height; when the handle is in the second position, the upper mold is supported by the elastic reset member and is located at a second height, wherein the first height is higher than the second height.

[0017] According to some embodiments of the present invention, the handle is rotatably connected to the guide rod and located above the upper mold. The handle has a transmission part. When the handle rotates in a first direction, the transmission part drives the upper mold to descend. When the handle rotates in a second direction, the elastic reset member drives the upper mold to rise.

[0018] According to some embodiments of the present invention, the transmission part has an arc-shaped transmission surface, a first limiting surface connected to one end of the arc-shaped transmission surface, and a second limiting surface connected to the other end of the arc-shaped transmission surface;

[0019] When the handle is in the first position, the first limiting surface abuts against the upper mold; when the handle is in the second position, the second limiting surface abuts against the upper mold; wherein, when the handle rotates along the first direction, the arc-shaped transmission surface gradually drives the upper mold to descend.

[0020] The testing apparatus according to a second aspect of the present invention includes the thread positioning fixture described in the above embodiments.

[0021] The testing device according to the embodiments of this utility model has at least the following beneficial effects:

[0022] The testing device of this invention, equipped with the aforementioned wire end positioning fixture, allows for the initial placement of multiple wire ends in the wire end limiting area, ensuring that the ends of each wire end contact the positioning wall. This achieves radial and axial positioning of the wire ends, enabling accurate and convenient positioning and aligning the soldered portion of the wire ends with the test probes. Then, driving the upper mold downwards lowers the test probes until they contact the soldered portion of the wire ends. The test probes can be connected to relevant testing equipment via signal lines, enabling the testing of the product under test. When using the wire end positioning fixture of this invention, radial and axial positioning of the wire ends is achieved simply by placing each wire end in its respective limiting area and ensuring that the ends of each wire end contact the positioning wall. This allows for accurate contact between the test probes and the testing equipment after the upper mold descends, simplifying operation and improving testing efficiency.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0025] Figure 1 This is a schematic diagram of the wire end structure;

[0026] Figure 2 This is a cross-sectional view of a wire end positioning fixture according to an embodiment of the present invention. Figure 1 ;

[0027] Figure 3 This is a cross-sectional view of a wire end positioning fixture according to an embodiment of the present invention. Figure 2 ;

[0028] Figure 4 for Figure 3 Top view of the figure shown;

[0029] Figure 5 for Figure 4 Side view of the figure shown;

[0030] Figure 6 This is a top view of the base according to an embodiment of the present invention;

[0031] Figure 7 for Figure 6 A cross-sectional view of the figure shown;

[0032] Figure 8 This is a top view of the base according to another embodiment of the present invention;

[0033] Figure 9 for Figure 8 A cross-sectional view of the figure shown;

[0034] Figure 10 This is a partial structural diagram of the lifting execution structure according to an embodiment of the present invention.

[0035] Icon labels:

[0036] 10. Loose threads;

[0037] 100. Base; 110. Wire end limiting area; 111. Diameter reduction section; 120. Positioning wall; 130. Guide plate; 140. Through area;

[0038] 200. Upper mold assembly; 210. Upper mold; 211. Guide hole; 220. Test probe;

[0039] 300. Lifting actuator; 310. Vertical guide rod; 320. Elastic reset component; 330. Handle; 331. Transmission unit; 3311. Arc-shaped transmission surface; 3312. First limiting surface; 3313. Second limiting surface. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0041] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] like Figure 2 As shown, an embodiment of this utility model provides a thread positioning fixture, combined with... Figure 1 and Figure 2 The wire end positioning fixture is used to position the wire end 10. The wire end 10 is a wire end with a sheath, one section of which has an open sheath structure (a stripped or de-stripped structure). The length of the open sheath structure can be set between 5mm and 10mm, and the length of the exposed tin-plated portion of the wire core is 1mm to 3mm. The wire end 10 is the signal wire end 10 on the product under test, which can be a speaker or other component.

[0044] like Figure 2 As shown, the wire end positioning fixture includes a base 100 and an upper mold assembly 200.

[0045] like Figures 2 to 5 As shown, the base 100 is the main load-bearing structure, and the base 100 is also used to position the wire end 10. The base 100 is provided with a plurality of wire end limiting areas 110 arranged at intervals and side by side, and the wire end limiting area 110 has a positioning wall 120 for positioning the end of the wire end 10.

[0046] Understandably, each wire end limiting area 110 is used to limit the position of one wire end 10. Furthermore, after the wire end 10 is placed into the wire end limiting area 110, its axial position can be positioned using the positioning wall 120. The number of wire end limiting areas 110 can be two or more; for example, there can be five, six, or seven such areas.

[0047] like Figures 2 to 7 As shown, in some embodiments, the wire end limiting area 110 is a wire end insertion hole, which has an inlet end, and the positioning wall 120 is disposed opposite to the inlet end.

[0048] Understandably, the multiple wire end limiting areas 110 are all wire end insertion holes. These insertion holes are arranged side by side and spaced apart. The wire end 10 can be inserted into the insertion hole through the inlet end until it contacts the positioning wall 120. In this way, multiple wire ends 10 can be positioned through the multiple insertion holes. The hole wall of the insertion hole can achieve radial positioning of the wire end 10, while the positioning wall 120 can achieve axial positioning of the wire end 10.

[0049] Furthermore, the wire end socket has a reduced diameter section 111, with the inlet end being the starting end of the reduced diameter section 111. Along the direction from the inlet end to the positioning wall 120, the diameter of the reduced diameter section 111 gradually decreases. It can be understood that the reduced diameter section 111 is funnel-shaped, which facilitates the insertion of the wire end 10 into the wire end socket.

[0050] It should be noted that the entire wire connector can be a reduced diameter structure, or only a part of it can be a reduced diameter structure.

[0051] The outer diameter of the wire end 10 with the sheath is D1, and the minimum diameter of the wire end socket is D2, satisfying the condition: -0.5mm ≤ D2 - D1 ≤ 0.5mm. Thus, the radial positioning of the wire end 10 can be achieved using the wire end socket.

[0052] It should be noted that the sheath of the wire end 10 has a certain degree of elasticity. When D2 is less than D1, the sheath of the wire end 10 is interference-fitted with the wall of the wire end socket.

[0053] Furthermore, a through area 140 extending downwards is provided on the upper surface of the base 100, and the through area 140 communicates with each wire end socket.

[0054] In some embodiments, the through region 140 is a through groove provided in the base 100, the upper end of the through groove penetrates the upper surface of the base 100, and the lower end of the through groove communicates with each wire end socket.

[0055] In other embodiments, the through area 140 includes a plurality of through holes, each through hole corresponding to a plurality of wire end sockets. The upper end of each through hole penetrates the upper surface of the base 100, and the lower end of each through hole is connected to each wire end socket in a corresponding manner.

[0056] Combination Figure 8 and Figure 9 In other embodiments, the wire end limiting area 110 is a positioning groove with an upward-facing opening. Along the length of the positioning groove, one end of the positioning groove is an open structure, and the other end has a positioning wall 120.

[0057] It is understandable that the wire end 10 can be inserted into the positioning groove from top to bottom, and radial positioning is achieved by the two side walls of the positioning groove along the width direction of the positioning groove, while the positioning wall 120 can achieve axial positioning of the wire end 10.

[0058] It should be noted that, along the width direction of the positioning groove, the distance between the two side walls of the positioning groove is S, and the outer diameter of the wire end 10 with the wire sheath is D1, satisfying: -0.5mm≤S-D1≤0.5mm. The wire sheath of the wire end 10 has a certain degree of elasticity; when S is less than D1, the wire sheath of the wire end 10 has an interference fit with the wall of the wire end insertion hole.

[0059] Combination Figure 2 and Figure 3 The upper mold assembly 200 includes an upper mold 210 that is vertically and flexibly disposed on the base 100, and multiple test pins 220 disposed on the upper mold 210. The multiple test pins 220 are spaced apart and are located above multiple wire end limiting areas 110 in a corresponding manner.

[0060] The base 100 is equipped with a guide plate 130, which is located to the side of the upper mold 210. The guide plate 130 guides the lifting and lowering of the upper mold 210. The distance between the guide plate 130 and the upper mold 210 can be between 0.05mm and 0.2mm, which allows the upper mold 210 to move smoothly up and down and also reduces the problem of significant shaking of the upper mold 210.

[0061] It is understood that the upper mold assembly 200 is vertically and flexibly disposed on the base 100, that is, the upper mold assembly 200 can be raised and lowered relative to the base 100. Specifically, the upper mold 210 can be raised and lowered relative to the base 100, thereby causing the test probe 220 disposed on the upper mold 210 to rise and fall relative to the base 100. In the corresponding test probe 220 and the wire end limiting area 110, when the upper mold 210 descends, the test probe 220 can gradually approach the bottom wall of the wire end limiting area 110; when the upper mold 210 rises, the test probe 220 can gradually move away from the bottom wall of the wire end limiting area 110.

[0062] In use, the wire end positioning fixture of this invention allows for the initial placement of multiple wire ends 10 within the wire end limiting area 110, with the ends of each wire end 10 contacting the positioning wall 120. This achieves radial and axial positioning of the wire ends 10, enabling accurate and convenient positioning and ensuring that the tin-dipped portion of the wire ends 10 aligns with the test probe 220. Then, the upper mold 210 is driven to descend, causing the test probe 220 to descend until it contacts the tin-dipped portion of the wire ends 10. The test probe 220 can be connected to relevant testing equipment via a signal line, enabling the testing of the product under test.

[0063] When positioning the wire ends 10 using the wire end positioning fixture of this utility model, the radial and axial positioning of the wire ends 10 can be achieved by placing each wire end 10 in the wire end limiting area 110 and making the end of each wire end 10 contact the positioning wall 120. The operation is simple and convenient.

[0064] In some embodiments, the test pin 220 is a flexible pin. Thus, the flexible pin can press against the soldered portion of the wire end 10, and due to the flexible structure of the pin itself, the risk of the wire end 10 being damaged by the flexible pin can be reduced.

[0065] Combination Figure 2 and Figure 3 In some embodiments, the wire end positioning fixture also includes a lifting actuator 300, which is disposed on the base 100 and connected to the upper mold 210 in a transmission manner. The lifting actuator 300 can operably drive the upper mold 210 to rise and fall.

[0066] It is understandable that the lifting actuator 300 can be an electric mechanism or a manual mechanism. The lifting actuator 300 is used to control the lifting of the upper mold 210.

[0067] Combination Figure 2 , Figure 3 and Figure 10In some embodiments, the lifting actuator 300 is a manual mechanism, which includes a vertical guide rod 310 disposed on the base 100, an elastic reset member 320 disposed on the base 100, and a handle 330 that is pulsatorically connected to the upper mold 210. The upper mold 210 has a guide hole 211 through which the vertical guide rod 310 passes. The elastic reset member 320 is used to connect with the upper mold 210 and can provide an upward elastic force to the upper mold 210. The handle 330 has a first position ( Figure 2 The position of the middle handle) and the second position ( Figure 3 (Regarding the position of the handle), when the handle 330 is in the first position, the upper mold 210 is supported by the elastic reset member 320 and is located at the first height. When the handle 330 is in the second position, the upper mold 210 is supported by the elastic reset member 320 and is located at the second height, wherein the first height is higher than the second height.

[0068] Specifically, the handle 330 is rotatably connected to the guide rod 310 and is located above the upper mold 210. The handle 330 has a transmission part 331. When the handle 330 rotates in a first direction, the transmission part 331 drives the upper mold 210 to descend. When the handle 330 rotates in a second direction opposite to the first direction, the elastic reset member 320 drives the upper mold 210 to rise. The elastic reset member 320 can be a spring, which is sleeved on the guide rod 310 and located between the base 100 and the upper mold 210.

[0069] Furthermore, the transmission part 331 has an arc-shaped transmission surface 3311, a first limiting surface 3312 connected to one end of the arc-shaped transmission surface 3311, and a second limiting surface 3313 connected to the other end of the arc-shaped transmission surface 3311. When the handle 330 is in the first position, the first limiting surface 3312 abuts against the upper mold 210. When the handle 330 is in the second position, the second limiting surface 3313 abuts against the upper mold 210.

[0070] Understandably, when the handle 330 is in the first position, the first limiting surface 3312 abuts against the upper mold 210. At this time, without applying any force to the handle 330, the handle 330 remains stationary and will not rotate due to the elastic reset member 320 and / or gravity. Only after applying a certain force to the handle 330 can the handle 330 rotate in the first direction. When the handle 330 is in the second position, the second limiting surface 3313 abuts against the upper mold 210. At this time, without applying any force to the handle 330, the handle 330 remains stationary and will not rotate due to the elastic reset member 320 and / or gravity. Only after applying a certain force to the handle 330 can the handle 330 rotate in the second direction.

[0071] In addition, the arc-shaped transmission surface 3311 has a quarter-elliptical structure. When the handle 330 rotates in the first direction, the arc-shaped transmission surface 3311 will squeeze the upper mold 210, causing the upper mold 210 to descend. When the handle 330 rotates in the second direction, the elastic reset member 320 drives the upper mold 210 to rise.

[0072] In other embodiments, the lifting actuator 300 is an electric mechanism, such as an electric push rod, a cylinder, or a hydraulic cylinder.

[0073] This utility model also provides a testing device, including the wire end positioning fixture and testing equipment described in the above embodiments, wherein the test pin 220 in the wire end positioning fixture is used to connect to the testing equipment.

[0074] The testing device of this invention, equipped with the aforementioned wire end positioning fixture, allows for the initial placement of multiple wire ends 10 within the wire end limiting area 110, with the ends of each wire end 10 contacting the positioning wall 120. This achieves radial and axial positioning of the wire ends 10, enabling accurate and convenient positioning and ensuring that the tin-dipped portion of the wire ends 10 aligns with the test probe 220. Then, the upper mold 210 is driven to descend, causing the test probe 220 to descend until it contacts the tin-dipped portion of the wire ends 10. The test probe 220 can be connected to relevant testing equipment via a signal line, enabling the testing of the product under test. When using the wire end positioning fixture of this utility model, radial and axial positioning of the wire ends 10 can be achieved by placing each wire end 10 in the wire end limiting area 110 and making the end of each wire end 10 contact the positioning wall 120. In this way, after the upper mold 210 is driven to descend, each test pin 220 can accurately contact the tin-dipped part of the wire end 10, thereby realizing the connection between the product to be tested and the testing equipment. The operation is simple and can improve the testing efficiency.

[0075] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0076] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A thread end positioning fixture, characterized in that, include: The base has multiple wire end limiting areas arranged at intervals and side by side, and each wire end limiting area has a positioning wall for positioning the end of the wire end. The upper mold assembly includes an upper mold that is vertically and flexibly disposed on the base, and multiple test pins disposed on the upper mold. The multiple test pins are spaced apart and are located above multiple wire end limiting areas in a corresponding manner.

2. The thread end positioning fixture according to claim 1, characterized in that, The wire end limiting area is a wire end insertion hole, which has an inlet end, and the positioning wall is disposed opposite to the inlet end; The base has a downwardly extending through area on its upper surface, which communicates with each of the wire insertion holes. The test probe is configured to move downward and extend into the through area.

3. The thread end positioning fixture according to claim 2, characterized in that, The wire end socket has a reduced diameter section, and the inlet end is the starting end of the reduced diameter section. Along the direction from the inlet end to the positioning wall, the diameter of the reduced diameter section gradually decreases.

4. The thread end positioning fixture according to claim 1, characterized in that, The line end limiting area is a positioning groove, which has an upward-facing opening. Along the length of the positioning groove, one end of the positioning groove is an open structure, and the other end has the positioning wall.

5. The thread end positioning fixture according to claim 1, characterized in that, The test needle is an elastic needle.

6. The thread end positioning fixture according to claim 1, characterized in that, It also includes a lifting actuator, which is disposed on the base and connected to the upper mold via a transmission. The lifting actuator can operably drive the upper mold to rise and fall.

7. The thread end positioning fixture according to claim 6, characterized in that, The lifting actuator includes a vertical guide rod disposed on the base, an elastic reset member disposed on the base, and a handle that is connected to the upper mold in a transmission manner; the upper mold has a guide hole through which the vertical guide rod passes, and the elastic reset member is used to connect with the upper mold and can provide an upward elastic force to the upper mold; The handle has a first position and a second position; when the handle is in the first position, the upper mold is supported by the elastic reset member and is located at a first height; when the handle is in the second position, the upper mold is supported by the elastic reset member and is located at a second height, wherein the first height is higher than the second height.

8. The thread end positioning fixture according to claim 7, characterized in that, The handle is rotatably connected to the guide rod and located above the upper mold. The handle has a transmission part. When the handle rotates in a first direction, the transmission part drives the upper mold to descend. When the handle rotates in a second direction, the elastic reset member drives the upper mold to rise.

9. The thread end positioning fixture according to claim 8, characterized in that, The transmission unit has an arc-shaped transmission surface, a first limiting surface connected to one end of the arc-shaped transmission surface, and a second limiting surface connected to the other end of the arc-shaped transmission surface; When the handle is in the first position, the first limiting surface abuts against the upper mold; when the handle is in the second position, the second limiting surface abuts against the upper mold; wherein, when the handle rotates along the first direction, the arc-shaped transmission surface gradually drives the upper mold to descend.

10. A testing apparatus, characterized in that, Includes the thread positioning fixture as described in any one of claims 1 to 9.

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