Contact retention testing device

Abstract

The utility model relates to the technical field of holding force testing, and discloses a contact holding force testing device which comprises an ejector pin and a fixing block used for fixing a contact carrier, and the fixing block is provided with a guide hole. A guide hole is formed in the contact carrier, a mortise is formed in the contact carrier, the guide hole is perpendicular to the mortise, one end of the ejector pin is arranged in the guide hole in a penetrating mode, and the other end of the ejector pin is externally connected with a pressure testing machine; according to the utility model, the contact carrier is fixed on the fixed block, then the contact to be tested is clamped in the mortise of the contact carrier, and then the guide hole is used for providing force application guidance for pressing the contact to be tested for the ejector pin until the ejector pin ejects the contact out of the mortise, so that a unified test environment is provided for all contact products, and the test efficiency is improved. Therefore, the holding force conditions of all contact products can be accurately tested, and the quality of the contact products can be accurately judged.

Description

Technical Field

[0001] The utility model relates to the technical field of holding force testing, in particular to a contact holding force testing device. Background Art

[0002] Factories need to measure the retention force of products that require contact retention. The commonly used measurement method is hand-held measurement. The specific operation is: workers manually pinch the edge of the contact to be tested and use a tool connected to a pressure tester to press the contact product out of their fingers to obtain the retention force data of the contact product. Hand-held measurement mainly relies on the worker's experience to pinch the contact product, which has a large subjective factor. Not only does it require long-term training for workers, which wastes time, but the data obtained is unstable, which can easily lead to misjudgment of the quality of the contact product. Utility Model Content

[0003] The purpose of the utility model is to overcome the problem of unstable data in hand-held contact retention force measurement in the prior art, and to provide a contact retention force testing device, which has an ejection pin connected to a pressure testing machine and can test the retention force of all contact products in a unified testing environment, thereby accurately judging the quality of the contact products.

[0004] In order to achieve the above object, the utility model provides a contact retention force testing device, comprising:

[0005] A fixing block for fixing the contact carrier, wherein the fixing block is provided with a guide hole; a mortise is provided on the contact carrier, wherein the guide hole and the mortise are perpendicular to each other; and

[0006] An ejector pin, one end of which is inserted into the guide hole, and the other end of which is externally connected to a pressure testing machine.

[0007] Preferably, the peripheral wall of the mortise is configured to fit the side wall of the contact to be tested.

[0008] Preferably, a fixing groove is formed on the fixing block, and the fixing groove is used for inserting one end of the contact carrier provided with the mortise.

[0009] Preferably, the contact carrier is configured to be in a rectangular parallelepiped shape, and one end thereof is configured to be able to be just inserted into the fixing groove.

[0010] Preferably, the diameter of the ejector pin is 0.5-5 mm smaller than the diameter of the guide hole, one end of the ejector pin is provided with an ejector head with a diameter smaller than the diameter of the mortise, and the other end of the ejector pin is provided with a limit block with a diameter larger than the diameter of the guide hole.

[0011] Preferably, the fixing block comprises an upper fixing seat and a lower fixing seat, and the bottom surface of the upper fixing seat and the top surface of the lower fixing seat are arranged in a step shape that can fit each other.

[0012] Preferably, the lower fixing seat and the upper fixing seat are detachably connected.

[0013] Preferably, a step surface of the upper fixing seat or the lower fixing seat is used to provide a groove bottom surface for the fixing groove.

[0014] Preferably, corresponding positioning pins and pin holes are respectively provided on the top surface of the lower fixing seat and the bottom surface of the upper fixing seat, and threaded holes are provided on both the upper fixing seat and the lower fixing seat.

[0015] Preferably, a nut groove is provided on the top surface of the upper fixing seat for receiving a bolt nut.

[0016] Through the above technical solution, the contact carrier is fixed on the fixed block, and then the contact to be tested is clamped in the mortise of the contact carrier, and then the guide hole is used to provide a force guide for the ejection pin to press the contact to be tested until the ejection pin ejects the contact from the mortise, providing a unified testing environment for all contact products, so that the retention force of all contact products can be accurately tested and the quality of the contact products can be accurately judged. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a contact retention force testing device provided by the utility model;

[0018] Figure 2 It is a cross-sectional view of a contact retention force testing device provided by the utility model at time A when in use;

[0019] Figure 3 It is a cross-sectional view of a contact retention force testing device provided by the utility model at time B when in use;

[0020] Figure 4 It is a structural schematic diagram of a lower fixing seat and an ejector pin of a contact retention force testing device provided by the utility model;

[0021] Figure 5 It is a structural schematic diagram of a lower fixing seat of a contact retention force testing device provided by the utility model;

[0022] Figure 6 It is a structural schematic diagram of an ejector pin of a contact retention force testing device provided by the utility model;

[0023] Figure 7 The utility model provides a contact holding force testing device provided by the contact carrier structure diagram.

[0024] Description of Reference Numerals

[0025] 1. Fixing block; 11. Fixing slot; 12. Upper fixing seat; 121. Pin hole; 122. Threaded hole; 13. Lower fixing seat; 131. Positioning pin; 14. Nut slot; 15. Guide hole; 2. Contact carrier; 21. Mortise; 3. Ejector pin; 31. Ejector head; 32. Limiting block; 4. Contact to be tested. DETAILED DESCRIPTION

[0026] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0027] As mentioned above, the utility model provides a contact retention force testing device for providing a unified and stable environmental test for all contact products with retention force requirements, so as to obtain the retention force conditions of all contact products under the same standard, thereby accurately judging the quality of the contact products.

[0028] Combination Figure 1 , Figure 2 and Figure 7 As shown, the contact retention force testing device includes an ejector pin 3 and a fixing block 1 for fixing a contact carrier 2, wherein the fixing block 1 is provided with a guide hole 15; the contact carrier 2 is provided with a mortise 21, and the guide hole 15 and the mortise 21 are perpendicular to each other; one end of the ejector pin 3 is inserted into the guide hole 15, and the other end of the ejector pin 3 is externally connected to a pressure testing machine.

[0029] In the utility model, one end of the contact carrier 2 provided with the mortise 21 is inserted into the fixed block 1 until the mortise 21 is extended into the guide hole 15, so that the mortise 21 is perpendicular to the guide hole 15, so that the ejector pin 3 can pass through the mortise 21 when moving in the guide hole 15, thereby ejecting the contact 4 to be tested from the mortise 21, the guide hole 15 is perpendicular to the horizontal plane, and the mortise 21 is parallel to the horizontal plane, so that the force exerted on the ejector pin 3 is almost only the pressure of the external pressure testing machine, its own gravity and the supporting force of the contact 4 to be tested, and there is almost no friction between the ejector pin 3 and the guide hole 15, so that the measured data is more stable and accurate, and the contact carrier 2 is fixed on the fixed block 1 and is at a distance from the bottom surface of the fixed block 1, so that the contact has space to fall.

[0030] In one embodiment of the utility model, the peripheral wall of the mortise 21 is configured to fit the side wall of the contact 4 to be tested. The contact product is an oblate cylindrical shape, so the mortise 21 is configured to be circular with a diameter slightly larger than the diameter of the contact 4 to be tested, so that the contact 4 to be tested can be snapped into the mortise 21 and will not fall without external force, thereby preventing the mortise 21 from having a diameter that is too large and unable to hold the contact 4 to be tested; and preventing the mortise 21 from having a diameter that is too small, resulting in the ejection pin 3 pressing the contact 4 to be tested, causing the outer wall of the contact 4 to be damaged by friction, and even the contact 4 to be tested cannot be placed in the mortise 21.

[0031] In one embodiment of the utility model, a fixing groove 11 is provided on the fixing block 1, and one end of the contact carrier 2 provided with the mortise 21 is inserted into the fixing groove 11. The fixing groove 11 is provided on the side wall of the fixing block 1, with the opening facing the horizontal direction and a distance from the bottom surface of the fixing block 1, so that when the contact carrier 2 is inserted into the fixing groove 11, the mortise 21 can be parallel to the horizontal plane, and there is space for the contact 4 to be tested to fall. The other end of the contact carrier 2 remains outside the fixing groove 11 to facilitate the insertion and removal of the contact carrier 2.

[0032] In one embodiment of the present invention, the contact carrier 2 is configured to be in the shape of a rectangular parallelepiped, and one end thereof is configured to be able to be just inserted into the fixing groove 11, so that the contact carrier 2 can be simply fixed in the fixing groove 11 without rotating, and the other end is exposed outside the fixing groove 11, and the purpose of the existence of this end is to facilitate hand-held operation.

[0033] Combination Figure 6 As shown, in the utility model, the diameter of the ejector pin 3 is 0.5 to 5 mm smaller than the diameter of the guide hole 15, one end of the ejector pin 3 is provided with an ejector head 31 whose diameter is smaller than the diameter of the mortise 21, and the other end of the ejector pin 3 is provided with a limit block 32 whose diameter is larger than the diameter of the guide hole 15.

[0034] In one embodiment of the present invention, the diameter of the ejector pin 3 is 0.5 to 5 mm smaller than the diameter of the guide hole 15, so that the ejector pin 3 can move freely in the guide hole 15 without friction with the guide hole 15 as much as possible, and the force application point of the ejector pin 3 on the contact 4 to be tested can be as close as possible to the center of the contact 4 to be tested, so that the force on the contact 4 to be tested is as uniform as possible, and the friction between the contact 4 to be tested and the mortise 21 is reduced; if the diameter of the ejector pin 3 is too large, the probability of friction between the outer wall of the ejector pin 3 and the guide hole 15 will increase, thereby making the measured data inaccurate; if the diameter of the ejector pin 3 is too small, it is difficult to control the force application point of the ejector pin 3 at the center of the contact 4 to be tested, resulting in accidental friction and damage to the contact 4 to be tested in the mortise 21, or even flipping.

[0035] One end of the ejector pin 3 is provided with an ejector head 31 whose diameter is smaller than that of the mortise 21, so that the ejector head 31 can pass through the mortise 21 to eject the contact 4 to be tested. The other end of the ejector pin 3 is provided with a limit block 32 whose diameter is larger than that of the guide hole 15, so as to prevent the ejector head 31 from going too deep into the guide hole 15 and crushing the contact 4 to be tested or the middle section of the ejector pin 3 from damaging the mortise 21.

[0036] In an embodiment of the present invention, the fixing block 1 includes an upper fixing seat 12 and a lower fixing seat 13 , and the bottom surface of the upper fixing seat 12 and the top surface of the lower fixing seat 13 are configured to be stepped and can fit each other.

[0037] In one embodiment provided by the utility model, the lower fixing seat 13 and the upper fixing seat 12 are detachably connected to facilitate the inspection and maintenance of the upper fixing seat 13 and the lower fixing seat 12. A step surface of the upper fixing seat 12 or the lower fixing seat 13 is used to provide a groove bottom surface for the fixing groove 11, which is convenient for the inspection and maintenance of the groove bottom surface.

[0038] Combination Figure 4 and Figure 5 As shown, in an embodiment provided by the utility model, corresponding positioning pins 131 and pin holes 121 are respectively provided on the top surface of the lower fixing seat 13 and the bottom surface of the upper fixing seat 12, so as to facilitate the rapid corresponding installation of the upper fixing seat 13 and the lower fixing seat 12, and threaded holes 122 are provided on the upper fixing seat 12 and the lower fixing seat 13 for installing bolts to fix the upper fixing seat 13 and the lower fixing seat 12 together. The combination of bolts and pins is conducive to consolidating the relative fixation of the upper fixing seat 13 and the lower fixing seat 12.

[0039] In an embodiment of the present invention, a nut groove 14 is provided on the top surface of the upper fixing seat 12 for receiving the bolt nut, thereby improving the overall aesthetics of the device and saving materials.

[0040] The method of using this device is:

[0041] a. Insert the positioning pins 131 and the pin holes 121 on the upper fixing seat 12 and the lower fixing seat 13 into the corresponding positions, and then screw the bolts into the threaded holes 122;

[0042] b. The contact to be tested 4 is inserted into the mortise 21, and then one end of the contact carrier 2 provided with the mortise 21 is inserted into the fixing groove 11 and fixed;

[0043] c. Place the ejector pin 3 connected to the pressure tester into the guide hole 15, so that the ejector pin 3 applies force along the guide hole 15 to eject the contact 4 to be tested, and judge the quality of the contact product in combination with the pressure diagram on the pressure tester.

[0044] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A contact retention force testing device, characterized in that: include: A fixing block (1) for fixing a contact carrier (2), wherein the fixing block (1) is provided with a guide hole (15); a mortise (21) is provided on the contact carrier (2), and the guide hole (15) and the mortise (21) are perpendicular to each other; and An ejector pin (3), one end of which is inserted into the guide hole (15), and the other end of which is externally connected to a pressure testing machine.

2. The contact retention force testing device according to claim 1, characterized in that: The peripheral wall of the mortise (21) is arranged to fit the side wall of the contact (4) to be tested.

3. The contact retention force testing device according to claim 1, characterized in that: The fixing block (1) is provided with a fixing groove (11), and the fixing groove (11) is used for inserting one end of the contact carrier (2) provided with the mortise (21).

4. The contact retention force testing device according to claim 3, characterized in that: The contact carrier (2) is configured to be in the shape of a rectangular parallelepiped, and one end thereof is configured to be able to be just inserted into the fixing groove (11).

5. The contact retention force testing device according to claim 1, characterized in that: The diameter of the ejector pin (3) is 0.5 to 5 mm smaller than the diameter of the guide hole (15); one end of the ejector pin (3) is provided with an ejector head (31) having a diameter smaller than the diameter of the mortise (21); and the other end of the ejector pin (3) is provided with a limit block (32) having a diameter larger than the diameter of the guide hole (15).

6. The contact retention force testing device according to claim 3, characterized in that: The fixing block (1) comprises an upper fixing seat (12) and a lower fixing seat (13), wherein the bottom surface of the upper fixing seat (12) and the top surface of the lower fixing seat (13) are arranged in a step shape capable of fitting together.

7. The contact retention force testing device according to claim 6, characterized in that: The lower fixing seat (13) and the upper fixing seat (12) are detachably connected.

8. The contact retention force testing device according to claim 7, characterized in that: A step surface of the upper fixing seat (12) or the lower fixing seat (13) is used to provide a groove bottom surface for the fixing groove (11).

9. The contact retention force testing device according to claim 8, characterized in that: The top surface of the lower fixing seat (13) and the bottom surface of the upper fixing seat (12) are respectively provided with corresponding positioning pins (131) and pin holes (121), and both the upper fixing seat (12) and the lower fixing seat (13) are provided with threaded holes (122).

10. The contact retention force testing device according to claim 9, characterized in that: The top surface of the upper fixing seat (12) is provided with a nut groove (14) for receiving the bolt nut.

Images