Test fixture and test equipment

Abstract

The embodiment of the utility model relates to the technical field of clamps, and discloses a test clamp and test equipment, and the test clamp comprises a base which is provided with a containing cavity with an opening; the limiting unit comprises a fixed shell connected to the base, and a movable cavity is formed in the fixed shell; the limiting part is arranged in the movable cavity, and the limiting part is located on one side of the opening of the base; the first driving part is arranged on the side, away from the containing cavity, of the limiting part, and the first driving part is configured to manually drive the limiting part to be close to or away from the containing cavity; the second driving part is arranged on the side, away from the containing cavity, of the limiting part, the second driving part is in transmission connection with an external driving part, and the driving part drives the limiting part to be close to or away from the containing cavity through the second driving part. According to the application, the test fixture has a plurality of driving modes such as manual driving or automatic driving, so that the convenience of production is ensured, the operation time is saved, and the production efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of fixtures, and particularly relates to a test fixture and a test device. Background Art

[0002] An automotive wiring harness refers to a collection of wires that connect various electrical appliances, sensors, and control units in an automobile, and plays the role of transmitting electricity, signals, and data from one component to another. An automotive wiring harness usually consists of multiple wires, an insulating protective layer, connectors, and markings.

[0003] After the wiring harness assembly is completed, it is necessary to test functions such as circuits and accessories. An automotive wiring harness test fixture is used to fix the wiring harness to be tested and is widely used in wiring harness testing. Existing test fixtures generally adopt a purely manual or purely pneumatic driving method. In the purely manual driving method, each test fixture needs to be opened one by one after the test is completed, which is time-consuming and laborious; in the purely pneumatic driving method, when multiple-frequency operations are required for some special scenarios, the functions of online locking and unlocking cannot be satisfied, resulting in low production efficiency. Utility Model Content

[0004] Embodiments of this application provide a test fixture and a test device to ensure production convenience, save operation time, and improve production efficiency.

[0005] To solve the above technical problems, embodiments of this application disclose the following technical solutions:

[0006] On the one hand, a test fixture is provided, including: a base, which is provided with a receiving cavity having an opening, and the opening is used for a workpiece to be embedded in the receiving cavity; and

[0007] a limiting unit, the limiting unit includes: a fixed housing, connected to the base, and an activity cavity is provided in the fixed housing;

[0008] a limiting portion, arranged in the activity cavity and located on one side of the opening of the base, and the limiting portion is configured to limit the workpiece from being exported from the receiving cavity;

[0009] a first driving portion, arranged on the side of the limiting portion away from the receiving cavity, and the first driving portion is configured to manually drive the limiting portion to approach or move away from the receiving cavity; and

[0010] a second driving portion, arranged on the side of the limiting portion away from the receiving cavity, and the first driving portion and the second driving portion are arranged opposite to each other, and the second driving portion is in transmission connection with an external driving member, and the driving member drives the limiting portion to approach or move away from the receiving cavity through the second driving portion.

[0011] On the other hand, a test device is further disclosed. In addition to one or more of the features disclosed above, or as an alternative, the test device includes the test fixture as described in any one of the above.

[0012] One of the technical solutions in the above technical solutions has the following advantages or beneficial effects: In this application, the limiting part can be manually driven by the first driving part to clamp or release the workpiece to be tested located in the accommodating cavity, and the driving part can also drive the limiting part to clamp or release the workpiece to be tested located in the accommodating cavity through the second driving part. That is, the test fixture in this application has multiple driving methods such as manual driving or automatic driving, realizes all functions of locking and releasing the test fixture during on-line production, meets the test requirements during on-line testing under special working conditions, has universality, and at the same time ensures the convenience of production, saves operation time, and improves production efficiency. Description of the Drawings

[0013] The following will clearly show the technical solutions and other beneficial effects of this application by describing the specific embodiments of this application in detail with reference to the accompanying drawings.

[0014] Figure 1 is a three-dimensional structural view of the test fixture provided by an embodiment of this application;

[0015] Figure 2 is an exploded structural view of the test fixture provided by an embodiment of this application;

[0016] Figure 3 is a three-dimensional structural view of the limiting unit provided by an embodiment of this application;

[0017] Figure 4 is a top view of the limiting unit provided by an embodiment of this application;

[0018] Figure 5 is a cross-sectional view of the limiting unit along the A-A direction provided by an embodiment of this application;

[0019] Figure 6 is a side view of the fixed housing provided by an embodiment of this application;

[0020] Figure 7 is a cross-sectional view of the fixed housing along the B-B direction provided by an embodiment of this application.

[0021] Description of the Reference Numerals:

[0022] 100, test fixture;

[0023] 110, base; 111, accommodating cavity; 112, open end; 113, accommodating groove;

[0024] 120. Limit unit; 121. Fixed housing; 1211. Activity chamber; 1212. Driving chamber; 1213. Communication hole; 1214. Avoidance hole; 1215. Fixed part; 1221. Limiting part; 12211. First accommodation groove; 1222. First driving part; 1223. Second driving part; 123. Cover plate; 124. Piston rod; 1241. Second accommodation groove; 125. Sealing element; 126. Fixing element; 127. First elastic element; 128. Second elastic element; 129. Connecting nozzle. Detailed implementation manners

[0025] In order to make the objectives, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners. It should be understood that the specific implementation manners described in this specification are only for explaining the present application and not for limiting the present application.

[0026] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0027] In the description of the present 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 may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection, a direct connection or an indirect connection through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0028] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0029] In an embodiment of the present application, please refer to Figures 1 to 7 , the present application provides a test fixture 100, and the test fixture 100 is applied to clamping components such as wire harnesses or connectors. And the test fixture 100 has a first direction X, a second direction Z and a third direction Y that intersect pairwise. Exemplarily, the test fixture 100 has a first direction X, a second direction Z and a third direction Y that are perpendicular to each other pairwise. Wherein, "perpendicular" refers to the state where the angle formed by a straight line and a straight line, a straight line and a plane, or a plane and a plane is 89° - 91°.

[0030] Specifically, the test fixture 100 includes: a base 110 and a limiting unit 120.

[0031] Specifically, the base 110 is provided with a receiving cavity 111 having an opening 112, and the opening 112 is used for the workpiece to be inserted into the receiving cavity 111, that is, the workpiece to be tested is received in the receiving cavity 111.

[0032] The limiting unit 120 includes: a fixed housing 121, a limiting portion 1221, a first driving portion 1222 and a second driving portion 1223.

[0033] The fixed housing 121 is connected to the base 110, and an activity cavity 1211 is formed in the fixed housing 121; the limiting portion 1221 is arranged in the activity cavity 1211, and the limiting portion 1221 is located on one side of the opening 112 of the base 110. The limiting portion 1221 is configured to limit the workpiece from being exported from the accommodation cavity 111; the first driving portion 1222 is arranged on the side of the limiting portion 1221 away from the accommodation cavity 111. The first driving portion 1222 is configured to manually drive the limiting portion 1221 to approach or move away from the accommodation cavity 111, that is, the first driving portion 1222 is configured to manually drive the limiting portion 1221 to clamp or release the workpiece to be tested located in the accommodation cavity 111; the second driving portion 1223 is arranged on the side of the limiting portion 1221 away from the accommodation cavity 111, and the first driving portion 1222 and the second driving portion 1223 are arranged oppositely. The second driving portion 1223 is in transmission connection with an external driving member, and the driving member drives the limiting portion 1221 to approach or move away from the accommodation cavity 111 through the second driving portion 1223, that is, the driving member drives the limiting portion 1221 to clamp or release the workpiece to be tested located in the accommodation cavity 111 through the second driving portion 1223.

[0034] Wherein, the limiting portion 1221 can be integrally formed with the first driving portion 1222, that is, the limiting portion 1221 and the first driving portion 1222 are of an integral structure; the limiting portion 1221 can also be fixedly connected to the first driving portion 1222. For example: the first driving portion 1222 is fixedly connected to the limiting portion 1221 through processes such as riveting or screwing. In this application, no specific limitation is made and it can be specifically set according to the actual situation. Exemplarily, in this application, the limiting portion 1221 and the first driving portion 1222 are integrally formed.

[0035] Wherein, the limiting portion 1221 can be integrally formed with the second driving portion 1223, that is, the limiting portion 1221 and the second driving portion 1223 are of an integral structure; the limiting portion 1221 can also be fixedly connected to the second driving portion 1223. For example: the second driving portion 1223 is fixedly connected to the limiting portion 1221 through processes such as riveting or screwing. In this application, no specific limitation is made and it can be specifically set according to the actual situation. Exemplarily, in this application, the limiting portion 1221 and the second driving portion 1223 are integrally formed.

[0036] Wherein, the limiting portion 1221 can be made of a flexible material, or a flexible material layer is coated on the outer surface of the limiting portion 1221 to prevent the limiting portion 1221 from damaging the workpiece.

[0037] Wherein, the driving member can be any one of a driving cylinder or a vacuum station, but is not limited thereto. Exemplarily, in this application, the driving member is a vacuum station.

[0038] Understandably, existing fixtures generally use pure manual or pure pneumatic drive methods for driving and clamping, which cannot meet the needs of online testing under special working conditions, resulting in low production efficiency.

[0039] In the present application, the limiting part 1221 can be manually driven by the first driving part 1222 to clamp or loosen the workpiece to be tested in the accommodating cavity 111, and the limiting part 1221 can be driven by the driving member through the second driving part 1223 to clamp or loosen the workpiece to be tested in the accommodating cavity 111. That is, the test fixture 100 in the present application has multiple driving modes such as manual drive or automatic drive, and realizes all functions of locking and releasing the test fixture during online production. It is suitable for testing requirements during online testing under special working conditions, has universality, and at the same time ensures production convenience, saves operation time, and improves production efficiency.

[0040] In one embodiment, the position limiting units 120 are provided with a plurality of groups, and the second driving parts 1223 of each group of the position limiting units 120 are respectively connected to a corresponding external driving member in a transmission manner. That is, the position limiting parts 1221 of each group of the position limiting units 120 can be driven by a separate driving member, that is, the driving member can control a corresponding position limiting part 1221 to clamp or release the workpiece to be tested in the accommodating cavity 111, and can also control all the position limiting parts 1221 to clamp or release the workpiece to be tested in the accommodating cavity 111 at the same time, which effectively saves operation time and improves operation convenience.

[0041] In one embodiment, referring to Figures 4 to 7 A driving chamber 1212 is further provided in the fixed shell 121. The driving chamber 1212 is communicated with the active chamber 1211. Both the driving chamber 1212 and the active chamber 1211 extend along the first direction X. The driving chamber 1212 and the active chamber 1211 are spaced apart in the second direction Z. The driving chamber 1212 is communicated with the output end of the driving member.

[0042] The limiting unit 120 further includes a piston rod 124 , which is movably disposed in the driving chamber 1212 , and is in contact with and connected to the second driving portion 1223 .

[0043] Specifically, the driving member can deliver gas toward the driving chamber 1212 so that the air pressure on both sides of the piston rod 124 that are relatively arranged in the first direction X changes, thereby driving the piston rod 124 to move in the first direction X in a direction away from the accommodating chamber 111. At the same time, due to the cooperation between the piston rod 124 and the second driving part 1223, the limiting part 1221 is driven to move in the first direction X in a direction away from the accommodating chamber 111, so as to loosen the workpiece to be tested located in the accommodating chamber 111.

[0044] After the driving member stops delivering gas to the driving cavity 1212, the limiting portion 1221 resets, that is, the limiting portion 1221 moves in the first direction X towards the direction close to the accommodating cavity 111 to clamp the workpiece to be tested located in the accommodating cavity 111.

[0045] In this application, the driving member moves through the piston rod 124 to drive the limiting portion 1221 to move, thereby realizing the automatic control and adjustment of the limiting portion 1221. The operation is convenient, saving operation time and improving production efficiency. At the same time, both the driving cavity 1212 and the moving cavity 1211 extend in the first direction X, that is, both the limiting portion 1221 and the piston rod 124 move in the first direction X, saving the space of the test fixture 100 in the second direction Z, making the test fixture 100 compact and small in occupied space.

[0046] In one embodiment, referring to Figure 5 , in order to improve the driving effect, in this application, the limiting unit 120 further includes: a sealing member 125, which is arranged between the piston rod 124 and the inner wall of the driving cavity 1212 to seal the space between the piston rod 124 and the inner wall of the driving cavity 1212, so as to ensure excellent driving control efficiency among the driving member, the piston rod 124 and the second driving portion 1223.

[0047] Exemplarily, in this application, the sealing member 125 is an O-ring, but it is not limited thereto.

[0048] In one embodiment, referring to Figures 4 to 7 , the limiting unit 120 further includes: a cover plate 123, which is detachably connected to the side of the fixed housing 121 away from the accommodating cavity 111 through a fixing member 126. Exemplarily, in this application, the fixing member 126 is a bolt and is screwed to the fixed housing 121 to detachably screw the cover plate 123 to the side of the fixed housing 121 away from the accommodating cavity 111. The cover plate 123 seals the moving cavity 1211 and the driving cavity 1212.

[0049] In this application, by providing the cover plate 123 and detachably connecting the cover plate 123 to the fixed housing 121, when the components inside the fixed housing 121 are damaged, the damaged components can be replaced or repaired by removing the cover plate 123 to ensure the normal use of the test fixture 100.

[0050] In one embodiment, referring to Figure 5 , the limiting unit 120 further includes: a first elastic element 127 and a second elastic element 128.

[0051] The first elastic element 127 is arranged between the limiting portion 1221 and the cover plate 123, and the first elastic element 127 abuts against both the limiting portion 1221 and the cover plate 123 respectively.

[0052] When the limiting part 1221 is manually driven or automatically driven by a driving member to move away from the accommodating cavity 111, the first elastic element 127 is compressed and deformed, thereby generating a reset elastic force. When the force applied to the first driving part 1222 or the second driving part 1223 is cancelled, the limiting part 1221 is reset under the action of the reset elastic force of the first elastic element 127, that is, the limiting part 1221 moves away from the accommodating cavity 111 under the action of the reset elastic force of the first elastic element 127 to clamp the workpiece to be tested located in the accommodating cavity 111, so as to ensure the normal clamping or releasing function of the test fixture 100.

[0053] The second elastic element 128 is arranged between the piston rod 124 and the cover plate 123, and the second elastic element 128 abuts against the piston rod 124 and the cover plate 123 respectively.

[0054] When the driving member drives the piston rod 124 to move away from the accommodating cavity 111 in the first direction X, the second elastic element 128 is compressed and deformed, thereby generating a reset elastic force; when the driving member stops delivering gas to the driving cavity 1212, the piston rod 124 is reset under the action of the reset elastic force of the second elastic element 128 to ensure the normal use of the test fixture 100.

[0055] Among them, the first elastic element 127 can be any one of a spring or an elastic sheet, etc., but is not limited thereto.

[0056] The second elastic element 128 can be any one of a spring or an elastic sheet, etc., but is not limited thereto.

[0057] In one embodiment, referring to Figure 5 , the limiting part 1221 is provided with a first accommodating groove 12211, the notch of the first accommodating groove 12211 faces the cover plate 123, and part of the first elastic element 127 is arranged in the first accommodating groove 12211 to save the occupied space of the first elastic element 127, so that the overall structure is compact and the occupied space is small.

[0058] The piston rod 124 is provided with a second accommodating groove 1241, the notch of the second accommodating groove 1241 faces the cover plate 123, and part of the second elastic element 128 is arranged in the second accommodating groove 1241 to save the occupied space of the second elastic element 128, so that the overall structure is compact and the occupied space is small.

[0059] In one embodiment, referring to Figures 4 to 7, an avoidance hole 1214 is also formed in the upper part of the fixed housing 121. The avoidance hole 1214 communicates with the movable cavity 1211. At least part of the first driving part 1222 passes through the avoidance hole 1214 to be located outside the fixed housing 121, so that the staff can manually drive the limiting part 1221 to move through the first driving part 1222, saving operation time.

[0060] In one embodiment, referring to Figures 4 to 7 , a communication hole 1213 is also formed in the fixed housing 121. The communication hole 1213 communicates with the driving cavity 1212.

[0061] The limiting unit 120 further includes: a connecting nozzle 129. The connecting nozzle 129 is arranged at the communication hole 1213, and the output end of the driving member communicates with the driving cavity 1212 through the connecting nozzle 129, so as to facilitate the connection and assembly between the limiting unit 120 and an external driving member, improve the assembly efficiency of the test fixture 100, and further improve the production efficiency.

[0062] In one embodiment, referring to Figures 1 to 2 , a receiving groove 113 is formed in the base 110. At least part of the fixed housing 121 is arranged in the receiving groove 113, so that the overall structure is compact and the occupied space is small.

[0063] A fixing part 1215 is arranged on the outer surface of the fixed housing 121. The fixed housing 121 is fixedly connected to the base 110 through the fixing part 1215. Exemplarily, in the present application, the fixing part 1215 can be screwed to the base 110 through the cooperation of bolts and screw holes to realize screwing the fixed housing 121 to the base 110, thereby facilitating the overall assembly of the test fixture 100 and improving the assembly efficiency of the test fixture 100.

[0064] On the other hand, in the embodiments of the present application, the present application also provides a test device, including the test fixture 100 described in any of the above embodiments. The test fixture 100 is used to clamp components such as a wire harness or a connector to be tested.

[0065] The introduction provided in the above steps is only used to help understand the method, structure and core idea of the present application. For those of ordinary skill in the art in this technical field, without departing from the principle of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A test fixture, characterized in that, Comprising: A base, which is provided with a receiving cavity having an opening, and the opening is used for a workpiece to be inserted into the receiving cavity; And A limiting unit, the limiting unit includes: a fixed housing, connected to the base, and an activity cavity is provided in the fixed housing; A limiting portion, arranged in the activity cavity, and the limiting portion is located on one side of the opening of the base, and the limiting portion is configured to limit the workpiece from being exported from the receiving cavity; A first driving portion, arranged on the side of the limiting portion away from the receiving cavity, and the first driving portion is configured to manually drive the limiting portion to approach or move away from the receiving cavity; and A second driving portion, arranged on the side of the limiting portion away from the receiving cavity, and the first driving portion and the second driving portion are arranged oppositely, the second driving portion is in transmission connection with an external driving member, and the driving member drives the limiting portion to approach or move away from the receiving cavity through the second driving portion.

2. The test fixture according to claim 1, wherein The test fixture has an intersecting first direction and second direction; A driving cavity is further provided in the fixed housing, the driving cavity is communicated with the activity cavity, and both the driving cavity and the activity cavity extend along the first direction, the driving cavity and the activity cavity are arranged at intervals in the second direction, and the driving cavity is communicated with the output end of the driving member; The limiting unit further includes: a piston rod, movably arranged in the driving cavity, and the piston rod is in contact connection with the second driving portion; The driving member drives the second driving portion to move through the piston rod, so as to drive the limiting portion to approach or move away from the receiving cavity.

3. The test fixture according to claim 2, wherein, The limiting unit further includes: a sealing member, and the sealing member is arranged between the piston rod and the inner wall of the driving cavity.

4. The test fixture according to claim 2, wherein The limiting unit further includes: a cover plate, the cover plate is detachably connected to the side of the fixed housing away from the receiving cavity through a fixing member, and the cover plate seals the activity cavity and the driving cavity.

5. The test fixture according to claim 4, characterized in that, The limiting unit further includes: a first elastic element, arranged between the limiting portion and the cover plate, and the first elastic element abuts against the limiting portion and the cover plate respectively; and A second elastic element, arranged between the piston rod and the cover plate, and the second elastic element abuts against the piston rod and the cover plate respectively.

6. The test fixture according to claim 5, characterized in that The limiting portion is provided with a first accommodation groove, the notch of the first accommodation groove faces the cover plate, and part of the first elastic element is arranged in the first accommodation groove; The piston rod is provided with a second accommodation groove, the notch of the second accommodation groove faces the cover plate, and part of the second elastic element is arranged in the second accommodation groove.

7. The test fixture according to claim 1, characterized in that, An avoidance hole is further provided on the fixed housing, the avoidance hole is communicated with the activity cavity, and at least part of the first driving portion passes through the avoidance hole to be located outside the fixed housing.

8. The test fixture according to claim 2, characterized in that, A communication hole is further provided on the fixed housing, and the communication hole is communicated with the driving cavity; The limiting unit further includes: a connecting nozzle, arranged at the communication hole, and the output end of the driving member is communicated with the driving cavity through the connecting nozzle.

9. The test fixture according to claim 1, characterized in that, A receiving groove is provided on the base, and at least part of the fixed housing is arranged in the receiving groove; A fixing part is arranged on the outer surface of the fixing housing, and the fixing housing is fixedly connected to the base through the fixing part.

10. A test device, characterized in that, It includes the test fixture according to any one of claims 1 to 9.

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