Contact element taking and disassembling tool

Abstract

The utility model belongs to the field of disassembly and assembly of metal parts and non-metal parts, and particularly relates to a contact element disassembly tool, so as to solve the technical problem that a contact element is easy to slip because the contact element is relatively small and smooth when the contact element on a back plate connector is disassembled by the existing disassembly tool. The contact element dismounting tool comprises a fixed guide rod and a limiting cylinder. One end of the fixed guide rod is provided with a dismounting head, and the dismounting head is provided with a dismounting end used for hooking a contact piece. The taking and unloading end is provided with taking and unloading elastic arms which are arranged in groups in the circumferential direction and extend in the axial direction, and the inner sides of the taking and unloading elastic arms are provided with hooking structures used for being matched with steps on the contact piece in a hooking mode; the fixed guide rod is sleeved with the limiting cylinder, and the limiting cylinder has a moving stroke moving in the axial direction of the fixed guide rod. The moving stroke comprises a locking position and an unlocking position. Therefore, the influence of the size and the surface smoothness of the contact on the pulling and unloading operation can be avoided, the condition that the contact slips from the pulling and unloading tool during the pulling and unloading operation is also avoided, and the operation efficiency of the pulling and unloading operation is ensured.

Description

Technical Field

[0001] The utility model belongs to the field of disassembly and assembly of metal parts and non-metal components, and particularly relates to a contact removal tool. Background Art

[0002] A backplane connector is a commonly used electrical connector inside a chassis, and a structure thereof can be referred to the backplane connector 1 shown in Figure 1 This backplane connector 1 usually has a plurality of sockets 2, and the structure of each socket 2 can be referred to that shown in Figure 2 shown, and a contact 3 arranged in an array is provided inside. The contacts 3 on this backplane connector 1 are usually designed to be relatively small and densely arranged on the backplane connector 1, so that the backplane connector 1 has a higher connection density. However, the contacts 3 on the backplane connector 1 are extremely easy to be damaged, and the damage of the contacts 3 of any socket 2 on the backplane connector 1 may cause the entire backplane connector 1 to be scrapped, or even the entire backplane to be scrapped. If the scrapped backplane connector 1 or the backplane is directly discarded due to this, it will inevitably cause great waste of resources and seriously affect the project progress. At present, technicians tend to remove the damaged contacts 3 so as to further repair the backplane connector 1 and the backplane.

[0003] When removing the contacts, technicians need to borrow removal tools such as tweezers and long-nose pliers to perform the removal operation. During the operation, the removal tool needs to clamp the contact so that there is sufficient friction between the removal tool and the object to be removed for the removal operation. Since the contacts are relatively small and smooth, conventional removal tools such as tweezers and long-nose pliers generally have difficulty in effectively clamping the contacts to be replaced. Moreover, since the contacts are densely arranged on the backplane connector, the space around the contacts to be replaced is limited, and the clamping range of the removal tool during the removal operation is limited, so it is even more difficult to effectively clamp the contacts to be replaced. The above situations make it easy for the removal tool and the contact to slip during the removal operation, resulting in difficult and inefficient removal operations. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a contact removal tool to solve the technical problem that the existing removal tool is easy to slip when removing the contacts on the backplane connector because the contacts are relatively small and smooth.

[0005] The utility model adopts the following technical solutions:

[0006] A contact removal tool includes a fixed guide rod and a limiting cylinder; one end of the fixed guide rod is provided with a removal head, and the removal head has a removal end for hooking the contact; the removal end has removal spring arms arranged in groups along the circumferential direction and extending along the axial direction, and a hooking structure for hooking and cooperating with the upper step of the contact is arranged on the inner side of the removal spring arms; the limiting cylinder is sleeved on the fixed guide rod and has a moving stroke along the axial direction of the fixed guide rod, and the moving stroke includes a locking position and an unlocking position; when in the locking position, the hooking structure is hooked and cooperated with the step, and the limiting cylinder covers the removal end to prevent the hooking structure from disengaging from the step; when in the unlocking position, the limiting cylinder no longer covers the removal end, and at this time the hooking structure can be disengaged from the step.

[0007] Further, the hooking structure is an arc-shaped convex platform extending circumferentially around the fixed guide rod and adapted to the upper step of the contact.

[0008] Further, the end of the removal spring arm facing away from the fixed guide rod is used to abut against the backplane connector to realize the positioning and alignment of the hooking structure and the upper step of the contact.

[0009] Further, an external thread section is provided on the outer surface of the fixed guide rod, and a retaining nut is screwed on the outer thread section beside the limiting cylinder facing away from the removal head.

[0010] Further, an anti-rotation guiding structure is provided between the limiting cylinder and the fixed guide rod to make the limiting cylinder stop rotating and remain on the fixed guide rod.

[0011] Further, the anti-rotation guiding structure includes a long hole axially opened on the limiting cylinder, and a guiding pin passing through the long hole and fixedly installed on the fixed guide rod, and the guiding pin is in guiding and anti-rotation cooperation with the long hole.

[0012] Further, the hole end of the long hole facing away from the removal head is used to be in blocking cooperation with the guiding pin when the limiting cylinder moves to the locking position.

[0013] Further, the fixed guide rod includes a large-diameter rod section provided with an external thread section and a small-diameter rod section for fixedly connecting with the removal head, and the limiting cylinder includes a large-diameter cylinder section sleeved on the large-diameter rod section and a small-diameter cylinder section for restricting the radially outward deflection of the removal spring arms of the removal end.

[0014] Further, the small-diameter rod section is inserted and connected with the removal head, and a hole and pin cooperation structure is provided between the removal head and the small-diameter rod section to prevent the small-diameter rod section from disengaging from the insertion connection with the removal head.

[0015] Further, a fixed connection structure is provided at the rod end of the fixed guide rod facing away from the removal head.

[0016] Beneficial effects: The present utility model proposes a brand-new contact removal tool for removing contacts on a connector. The contact removal tool described in the present utility model includes a fixed guide rod and a limiting cylinder, and a removal head is provided at one end of the fixed guide rod. The removal head has a removal end for hooking the contact; the removal end has removal spring arms arranged in a circumferential group and extending axially, and a hooking structure for hooking and cooperating with the step on the contact is arranged on the inner side of the removal spring arms. The limiting cylinder is sleeved on the fixed guide rod and the removal head and has a moving stroke for moving axially along the fixed guide rod, and the moving stroke includes a locking position and an unlocking position; when in the locking position, the hooking structure is hooked and cooperated with the step, and the limiting cylinder covers the removal end to prevent the hooking structure from disengaging from the step; when in the unlocking position, the limiting cylinder no longer covers the removal end, and at this time the hooking structure can be disengaged from the step. When in use, first move the limiting cylinder to the unlocking position, then put the removal spring arms on the removal head over the contact, and make the hooking structure on the removal spring arms hook and cooperate with the step on the contact. Move the limiting cylinder to the locking position, so as to restrain the radial outward deflection of the removal spring arms through the cylinder wall of the limiting cylinder, thereby preventing the hooking structure from disengaging from the step on the contact. At this time, applying a pulling force on the fixed guide rod can conveniently pull out the contact from the connector. The above structure does not need to clamp the contact, but pulls out the contact by hooking and cooperating the hooking structure with the step on the contact. In this way, the influence of the contact size and surface finish on the removal operation can be avoided, and thus the situation that the contact slips off the removal tool during the removal operation can also be avoided, enabling the removal operation to proceed smoothly and effectively ensuring the operation efficiency of the removal operation. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of an existing backplane connector;

[0018] Figure 2 is Figure 1 a schematic structural diagram at a certain socket in

[0019] Figure 3 is an external view of the shaft of the contact removal tool described in the present utility model;

[0020] Figure 4 is Figure 1 a schematic sectional view taken along the central plane of the contact removal tool;

[0021] Figure 5 is Figure 1 an external view of the shaft of the removal head in

[0022] Figure 6 is Figure 3 a schematic sectional view taken along the central plane of the removal head;

[0023] Figure 7Flow chart for assembling the contact component removal tool of the present utility model;

[0024] Figure 8 The first state diagram when the contact component removal tool of the present utility model is in use;

[0025] Figure 9 The second state diagram when the contact component removal tool of the present utility model is in use;

[0026] Figure 10 The third state diagram when the contact component removal tool of the present utility model is in use;

[0027] Figure 11 The fourth state diagram when the contact component removal tool of the present utility model is in use;

[0028] Figure 12 is Figure 11 The partial enlarged view of part A in

[0029] Figure 13 The fifth state diagram when the contact component removal tool of the present utility model is in use;

[0030] The names of the components corresponding to the respective reference numerals in the figure are: 1, backplane connector; 2, socket; 3, contact component; 4, contact component removal tool; 5, removal head; 6, fixed guide rod; 7, limiting cylinder; 8, fixed end; 9, removal end; 10, removal spring arm; 11, arc-shaped boss; 12, split groove; 13, step; 14, external thread section; 15, retaining nut; 16, long slot; 17, guide pin; 18, large-diameter rod section; 19, small-diameter rod section; 20, large-diameter cylinder section; 21, small-diameter cylinder section; 22, fixed pin hole; 23, fixed pin; 24, connecting screw hole; 25, connecting screw. Detailed implementation manners

[0031] The features and performance of the present utility model will be further described in detail below in conjunction with embodiments.

[0032] The scheme principle of the contact component removal tool of the present utility model is as follows:

[0033] A contact removal tool for removing contacts on a connector, especially suitable for removing small contacts on a backplane connector. The contact removal tool includes a fixed guide rod and a limit cylinder, and a removal head is provided at one end of the fixed guide rod. The removal head has a removal end for hooking the contact, and the removal end has removal spring arms arranged in groups along the circumferential direction and extending along the axial direction. A hooking structure for hooking and cooperating with the step on the contact is arranged on the inner side of the removal spring arm. The limit cylinder is sleeved on the fixed guide rod and the removal head and has a moving stroke for moving axially along the fixed guide rod. The moving stroke includes a locking position and an unlocking position; when in the locking position, the hooking structure is hooked and cooperated with the step, and the limit cylinder covers the removal end to prevent the hooking structure from being disengaged from the step; when in the unlocking position, the limit cylinder no longer covers the removal end, and at this time the hooking structure can be disengaged from the step.

[0034] During use, first move the limit cylinder to the unlocking position, then put the removal spring arms on the removal head on the contact, and make the hooking structure on the removal spring arms be hooked and cooperated with the step on the contact. Move the limit cylinder to the locking position so as to restrain the radial outward deflection of the removal spring arms through the cylinder wall of the limit cylinder, thereby preventing the hooking structure from being disengaged from the step on the contact. At this time, apply a pulling force to the fixed guide rod, and the contact can be conveniently pulled out from the connector.

[0035] The above structure does not need to clamp the contact, but pulls out the contact by hooking and cooperating the hooking structure with the step on the contact. In this way, the influence of the contact size and surface finish on the removal operation can be avoided, and thus the situation that the contact slips off the removal tool during the removal operation can also be avoided, enabling the removal operation to proceed smoothly and effectively ensuring the operation efficiency of the removal operation.

[0036] An embodiment of the contact removal tool of the present utility model:

[0037] A contact removal tool 4, the structure of which can be referred to Figure 3 、 Figure 4 as shown, including a fixed guide rod 6 and a limit cylinder 7, and a removal head 5 is provided at one end of the fixed guide rod 6. In this embodiment, the removal head 5 and the fixed guide rod 6 are integrally formed in a split manner. In other embodiments, the removal head 5 and the fixed guide rod 6 can also be integrally formed. Can be referred to Figure 5 、 Figure 6As shown, the removal head 5 is specifically in a cylindrical structure. One end thereof serves as a fixed end 8 and is axially fixed at the end of the fixed guide rod 6, and the other end serves as a removal end 9 for hook - hanging cooperation with the contact member 3. The removal end 9 has removal spring arms 10 arranged in groups along the circumferential direction and extending axially. On the inner side of the removal spring arms 10, there is a hook - hanging structure adapted to the upper step 13 on the contact member 3. In this embodiment, the removal end 9 of the removal head 5 is provided with a plurality of axially - extending split grooves 12 along the circumferential direction, so that the end of the cylindrical structure forms a group - arranged removal spring arms 10. The split grooves 12 can be provided with two, so that the removal end 9 has two removal spring arms 10 that can tilt outward and converge inward along the radial direction. Of course, the split grooves 12 can also be provided with three, so that the removal end 9 has three removal spring arms 10, or can be provided with four, five or even more. The actual number of the split grooves 12 depends on the actual needs and will not be elaborated here one by one.

[0038] The limiting cylinder 7 is sleeved on the fixed guide rod 6 and can reciprocate axially along the fixed guide rod 6. The moving stroke of the limiting cylinder 7 has a locking position and an unlocking position. When performing the removal operation, first move the limiting cylinder 7 to the unlocking position to expose the removal head 5, and then sleeve the removal end 9 of the removal head 5 on the contact member 3 to be disassembled. During this process, the removal spring arms 10 are first expanded under the action of the contact member 3. As the removal head 5 continues to move, the hook - hanging structure on the removal spring arms 10 is hooked and cooperated with the upper step 13 on the contact member 3. At this time, move the limiting cylinder 7 towards the removal head 5. When the limiting cylinder 7 moves to the locking position, the cylinder wall of the limiting cylinder 7 completely blocks the radial outside of the removal spring arms 10 to prevent the removal spring arms 10 from deflecting outward during removal and causing the hook - hanging structure to disengage from the hook - hanging cooperation with the contact member 3. Finally, pull up the fixed guide rod 6, and the contact member 3 can be pulled out.

[0039] The key point of this embodiment is that the aforementioned hook - hanging structure is an arc - shaped convex platform 11 extending circumferentially around the fixed guide rod 6 and adapted to the upper step 13 on the contact member 3. This can make the hook - hanging structure have a larger hook - hanging cooperation area with the ring - shaped step 13 on the contact member 3, thereby ensuring the reliability of the hook - hanging cooperation between the hook - hanging structure and the step 13. Using the above structure can better ensure the relative fixed relationship between the removal head 5 and the contact member 3, and further ensure that the contact member 3 is less likely to slip off the removal head 5 during the removal operation. Of course, the aforementioned hook - hanging structure can also be a convex bump or a claw.

[0040] When performing the removal operation, the end of the removal spring arm 10 facing away from the fixed guide rod 6 abuts against the backplane connector 1 to achieve the positioning and alignment of the hook - hanging structure and the upper step 13 on the contact member 3. On the one hand, this greatly facilitates the cooperation between the removal head 5 and the contact member 3 and is convenient to use.

[0041] On the basis of the foregoing structure, an external thread section 14 can be provided on the outer surface of the fixed guide rod 6, and a retaining nut 15 is screwed on the external thread section 14 beside the limiting cylinder 7 facing away from the removal head 5. When performing the removal operation, the retaining nut 15 is screwed to enable the limiting cylinder 7 to be reliably held in the locking position under the self-locking action of the retaining nut 15. In this way, on the one hand, the structure is simple, and on the other hand, the reliability of the limiting effect of the limiting cylinder 7 on the removal spring arm 10 can be ensured through the thread self-locking effect of the retaining nut 15. Of course, an external thread section 14 can also be provided on the outer surface of the fixed guide surface, and an internal thread section is provided on the inner wall of the limiting cylinder 7, and the external thread section 14 is screwed with the internal thread section. During use, the limiting cylinder 7 is rotated so that the limiting cylinder 7 can axially move along the fixed guide rod 6 under the action of the thread fit.

[0042] A rotation prevention and guiding structure can be provided between the limiting cylinder 7 and the fixed guide rod 6. Under the action of the rotation prevention and guiding structure, the limiting cylinder 7 can only axially move along the fixed guide rod 6 and cannot circumferentially rotate along the fixed guide rod 6. This greatly facilitates the use of the contact part removal tool 4 and improves the efficiency of the removal operation. The rotation prevention and guiding structure specifically includes a long hole 16 axially opened on the limiting cylinder 7, and a guide pin 17 passing through the long hole 16 and fixedly installed on the fixed guide rod 6. The guide pin 17 is in guiding fit with the long hole 16 so that the limiting cylinder 7 can only axially move along the fixed guide rod 6 with a limited stroke. The above structure is simple and convenient for disassembly and assembly, thus effectively reducing the processing cost of the contact part removal tool 4. Of course, the rotation prevention and guiding structure can also specifically include a long groove axially opened on the fixed guide rod 6, and a guide pin 17 passing through the wall of the limiting cylinder 7 and having its end guided and assembled in the long groove. Or the rotation prevention and guiding structure can also specifically include a long groove axially opened on the fixed guide rod 6, and a guide strip provided on the inner side of the wall of the limiting cylinder 7. One end of the long groove penetrates through the rod end of the fixed guide rod 6 facing away from the removal head 5 along the extension direction of the long groove, so that the limiting cylinder 7 can be inserted from this end.

[0043] On the basis of the foregoing structure, the hole end of the long hole 16 facing away from the removal head 5 can be correspondingly set at the locking position of the limiting cylinder 7, so that when the limiting cylinder 7 moves to the locking position, the guide pin 17 thereon just abuts and cooperates with the hole end of the long hole 16 facing away from the removal head 5 to limit the over-travel movement of the limiting cylinder 7, thereby preventing the situation that the backplane connector 1 is damaged due to the over-travel movement of the limiting cylinder 7.

[0044] The fixed guide rod 6 specifically includes a large-diameter rod section 18 and a small-diameter rod section 19. The large-diameter rod section 18 is disposed at one end of the small-diameter rod section 19 facing away from the unloading head 5, and an external thread section 14 is provided thereon. The other end of the small-diameter rod section 19 is fixedly connected to the unloading head 5. Correspondingly, the limiting cylinder 7 includes a large-diameter cylinder section 20 sleeved on the large-diameter rod section 18 and a small-diameter cylinder section 21 for limiting the unloading spring arm 10 of the unloading end 9. Since the contact member 3 is usually small, the unloading head 5 is generally designed to be relatively small. The fixed guide rod 6 specifically includes the large-diameter rod section 18 and the small-diameter rod section 19, and is fixedly connected to the unloading head 5 through the small-diameter rod section 19. On the one hand, it is easier to ensure the fixed connection effect between the small-diameter rod section 19 and the unloading head 5, and on the other hand, materials can be saved. The external thread section 14 provided on the large-diameter rod section 18 can make the aforementioned retaining nut 15 maintain an easy-to-use size, thereby facilitating the use of the contact member unloading tool 4. Of course, in other embodiments, the rod diameter of the fixed guide rod 6 can also be always the same as the outer diameter of the unloading head 5. Correspondingly, the limiting cylinder 7 can be a straight cylinder structure with a constant outer diameter of the cylinder.

[0045] Based on the foregoing structure, the small-diameter rod section 19 can be inserted into the fixed end 8 of the unloading head 5, or the fixed end 8 of the unloading head 5 can be inserted into the small-diameter rod section 19, and a pin hole matching structure is provided between the fixed end 8 and the small-diameter rod section 19 to prevent the small-diameter rod section 19 from being disengaged from the inserted connection with the fixed end 8 of the unloading head 5. The above structure facilitates the replacement of the unloading head 5, and thus the contact member unloading tool 4 can specifically select a suitable unloading head 5 according to the size and type of the contact member 3. Therefore, such a setting improves the adaptability of the contact member unloading tool 4 to different contact members 3 and also reduces the use cost of the contact member unloading tool 4 under the unloading requirements of different contact members 3. The pin hole matching structure specifically includes a fixing pin hole 22 penetrating through the small-diameter rod section 19 and the fixed end 8 and a fixing pin 23 inserted into the fixing pin hole 22. To ensure the fixing effect, the pin hole matching structure can be provided in multiple places along the axial direction of the fixed guide rod 6, and the pin holes of different pin hole matching structures have a certain included angle. In this embodiment, the pin hole matching structure is specifically provided in two places, and the pin holes of the two pin hole matching structures are arranged at an interval of 90 degrees. Of course, when facing a single size and type of contact member 3, the fixed end 8 and the small-diameter rod section 19 can also be fixed by welding, interference insertion, riveting, etc.

[0046] The rod end of the fixed guide rod 6 facing away from the removal head 5 is provided with a fixed connection structure so that the contact piece removal tool 4 can be connected to the matching pulling mechanism or mechanical arm by transmission. In this way, the pulling mechanism or mechanical arm can be used to increase the removal force acting on the fixed guide rod 6 during the removal operation; at the same time, this can also avoid the influence of human work on the removal action of the contact piece removal tool 4, so that the contact piece removal tool 4 can move as straight as possible during the removal operation, thereby avoiding the shaking of the contact piece removal tool 4 and affecting the surrounding contact pieces 3, and also avoiding the contact piece 3 being broken during removal due to the twisting of the contact piece removal tool 4. In this embodiment, the fixed connection structure specifically includes a connecting screw hole 24 provided at the rod end of the fixed guide rod 6 and a connecting screw 25 screwed in the connecting screw hole 24. After the connecting screw 25 is screwed into the connecting screw hole 24, a gap is left between the screw head and the rod end of the fixed guide rod 6. At this time, a transmission rope can be tied in the gap, and the other end of the transmission rope is connected to a driving mechanism such as a motor, and the motor and the transmission rope constitute the aforementioned pulling mechanism. In other embodiments, the contact piece removal tool 4 can also be fixedly mounted on the mounting flange of the execution end of the robot arm by means of a connecting screw 25 and a connecting screw hole 24. The fixed connection structure can also include a connecting countersunk hole and a connecting rivet. The setting of the connecting countersunk hole can refer to the connecting screw hole 24, and the setting of the connecting rivet can refer to the connecting screw 25.

[0047] The installation process of the contact removal tool 4 of the utility model can refer to Figure 7 As shown. The first step is to insert the small diameter rod section 19 of the fixed guide rod 6 into the fixed end 8 of the unloading head 5, align the small diameter rod section 19 with the fixing pin hole 22 on the fixed end 8, and then install the fixing pin 23 to complete the fixation of the unloading head 5 and the fixed guide rod 6. The second step is to screw the retaining nut 15 on the external thread section 14 of the large diameter rod section 18 of the fixed guide rod 6 from the side where the unloading head 5 is located. The third step is to put the limiting cylinder 7 on the fixed guide rod 6 and the unloading head 5, and align the long strip hole 16 on the limiting cylinder 7 with the guide pin 17 mounting hole on the fixed guide rod 6 for fixing the guide pin 17. The fourth step is to fix the guide pin 17 into the long strip hole 16 and the guide pin 17 mounting hole. The fifth step is to debug and detect the coordination of various parts on the contact piece unloading tool 4. The sixth step is to screw the fixing screw 25 into the connecting screw hole 24 at the rod end of the fixed guide rod 6.

[0048] The removal and removal operation process of the contact piece removal tool 4 of the utility model can be referred to Figures 8 - 13As shown, it specifically includes five state processes from the first to the fifth. In the first state, the contact part removal tool 4 is located beside the contact part 3 to be removed, to align the axial positions of the contact part removal tool 4 and the contact part 3 to be removed. At this time, the removal head 5 is exposed outside the limit cylinder 7. After alignment, the contact part removal tool 4 moves axially towards the contact part 3 to be removed until the end of the removal end 9 of the removal head 5, that is, the end of the removal spring arm 10 facing away from the fixed guide rod 6 abuts against the backplane connector 1. At this time, it is the second state. In the second state, the arc-shaped convex platform 11 on the removal head 5 is exactly aligned with the step 13 on the contact part 3 and is engaged in a hooked manner. At this time, the limit cylinder 7 is moved towards the removal head 5 so that the limit cylinder 7 moves to the locking position to restrict the radial outward deflection of the removal spring arm 10. At this time, it is the third state. A force acting away from the contact part 3 is applied to the fixed guide rod 6 in the third state. At this time, the fourth state is reached. In the fourth state, reference can be made to Figure 12 As shown, the side of the arc-shaped convex platform 11 facing the fixed guide rod 6 is engaged in a hooked manner with the step 13 of the contact part 3, so that the force acting away from the contact part 3 can act completely on the contact part 3. The force is continuously applied until the contact part 3 is completely pulled out. At this time, it is the fifth state.

[0049] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention is subject to the claims. All equivalent structural changes made by using the description and drawings of the present invention should, by the same token, be included in the protection scope of the present invention.

Claims

1. A contact removal tool, characterized in that, It includes a fixed guide rod (6) and a limit cylinder (7); one end of the fixed guide rod (6) is provided with a removal head (5), and the removal head (5) has a removal end (9) for hooking the contact member (3); the removal end (9) has removal spring arms (10) arranged in groups along the circumference and extending axially, and a hooking structure for hooking and cooperating with the step (13) on the contact member (3) is arranged on the inner side of the removal spring arms (10); the limit cylinder (7) is sleeved on the fixed guide rod (6) and has a moving stroke along the axial direction of the fixed guide rod (6), and the moving stroke includes a locking position and an unlocking position; when in the locking position, the hooking structure is hooked and cooperated with the step (13), and the limit cylinder (7) covers the removal end (9) to prevent the hooking structure from being disengaged from the step (13); when in the unlocking position, the limit cylinder no longer covers the removal end (9), and at this time the hooking structure can be disengaged from the step (13).

2. The contact removal tool according to claim 1, characterized in that, The hooking structure is an arc-shaped boss (11) extending circumferentially around the fixed guide rod (6) and adapted to the step (13) on the contact member (3).

3. The contact removal tool according to claim 1, characterized in that, One end of the removal spring arm (10) facing away from the fixed guide rod (6) is used to abut against the backplane connector (1) to realize the positioning and alignment of the hooking structure and the step (13) on the contact member (3).

4. The contact removal tool according to any one of claims 1-3, characterized in that, An external thread section (14) is arranged on the outer surface of the fixed guide rod (6), and a retaining nut (15) is screwed on the external thread section (14) beside the limit cylinder (7) facing away from the removal head (5).

5. The contact removal tool according to claim 4, wherein, A rotation stopping and guiding structure is arranged between the limit cylinder (7) and the fixed guide rod (6) to keep the limit cylinder (7) from rotating and staying on the fixed guide rod (6).

6. The contact removal tool according to claim 5, characterized in that, The rotation stopping and guiding structure includes a long hole (16) axially opened on the limit cylinder (7), and a guide pin (17) passing through the long hole (16) and fixedly installed on the fixed guide rod (6), and the guide pin (17) is in guiding and rotation stopping cooperation with the long hole (16).

7. The contact removing tool according to claim 6, characterized in that, The hole end of the long hole (16) facing away from the removal head (5) is used for stop cooperation with the guide pin (17) when the limit cylinder (7) moves to the locking position.

8. The contact removal tool according to claim 4, characterized in that, The fixed guide rod (6) includes a large-diameter rod section (18) provided with an external thread section (14) and a small-diameter rod section (19) for fixedly connecting with the removal head (5), and the limit cylinder (7) includes a large-diameter cylinder section (20) sleeved on the large-diameter rod section (18) and a small-diameter cylinder section (21) for restricting the radial outward deflection of the removal spring arms (10) of the removal end (9).

9. The contact removal tool according to claim 8, wherein The small-diameter rod section (19) is inserted and connected with the removal head (5), and a hole and pin cooperation structure is arranged between the removal head (5) and the small-diameter rod section (19) to prevent the small-diameter rod section (19) from being disengaged from the inserted connection with the removal head (5).

10. The contact removal tool according to any one of claims 1 to 3, characterized in that, A fixed connection structure is arranged at the rod end of the fixed guide rod (6) facing away from the removal head (5).

Images