CN212764854U

CN212764854U - Crimping assembly for crimping nut

Info

Publication number: CN212764854U
Application number: CN202020838322.4U
Authority: CN
Inventors: 刘宏; 王卫平; 陈祎; 陈吉; 周峰; 吴伟辉; 赵朋
Original assignee: Zhuzhou CRRC Times Electric Co Ltd
Current assignee: Zhuzhou CRRC Times Electric Co Ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2021-03-23
Anticipated expiration: 2030-05-19

Abstract

The utility model discloses a crimping subassembly for crimping nut, including crimping die block and positioning mechanism, the crimping die block includes the fixing base, the echelonment structure of slotted hole is seted up for the middle part to the fixing base, the top of fixing base is seted up flutedly, the recess is used for the holding to treat crimping nut, positioning mechanism includes locating lever and elastic component, locating lever and elastic component inlay and locate in the slotted hole, locating lever one end is connected with the elastic component, the locating lever other end passes the bottom surface of recess, the top of the locating lever other end exceeds the last top surface of fixing base. The utility model has the advantages of fix a position accurately, convenient operation, crimping are reliable and efficient.

Description

Crimping assembly for crimping nut

Technical Field

The utility model relates to a circuit board nut crimping technical field refers in particular to a crimping subassembly for crimping nut.

Background

In practical applications of circuit boards, it is often necessary to press-fit nuts at holes of circuit boards for connecting the circuit boards with other circuit boards or devices. Taking the radiator on the 110V switching power supply board to be connected with the PCB as an example, the prior art generally adopts the crimping nut to be embedded into the PCB, then directly locks the radiator on the PCB by using three combination screws, and the crimping nut is embedded into the PCB generally by adopting a manual hammering mode, the embedding mode has large mechanical stress and low crimping efficiency, even can cause the PCB delamination, and the problems of deflection and the like can also occur during the crimping of the nut, thereby influencing the positioning and installation of the PCB and devices.

SUMMERY OF THE UTILITY MODEL

To the technical problem that prior art exists, the utility model provides a fix a position accurate, convenient operation, reliable and efficient crimping subassembly that is used for crimping nut of crimping.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a crimping subassembly for crimping nut, includes crimping die block and positioning mechanism, the crimping die block includes the fixing base, the echelonment structure of slotted hole is seted up for the middle part to the fixing base, the top of fixing base is seted up flutedly, the recess is used for the holding to treat the crimping nut, positioning mechanism includes locating lever and elastic component, locating lever and elastic component inlay and locate in the slotted hole, the first end of locating lever is connected with the elastic component, the locating lever second end is passed the bottom surface of recess, the top of the locating lever other end exceeds the last top surface of fixing base.

As a further improvement of the above technical solution: the locating rod comprises a first cylinder and a second cylinder, and the diameter of the first cylinder is smaller than that of the second cylinder.

As a further improvement of the above technical solution: the shape of the groove hole is matched with that of the positioning rod, and the groove hole and the positioning rod are concentric and are arranged in clearance fit.

As a further improvement of the above technical solution: the fixing seat comprises a first body, a second body and a third body, wherein the first body, the second body and the third body are sequentially connected to form a ladder shape.

As a further improvement of the above technical solution: the diameter of the second body is larger than that of the first body, and the diameter of the second body is smaller than that of the third body.

As a further improvement of the above technical solution: the first body, the second body and the third body are cylinders or squares.

As a further improvement of the above technical solution: the first body, the second body and the third body are designed to be integrally formed.

As a further improvement of the above technical solution: the first body, the second body and the third body are of a split type design and are connected or welded through fasteners.

As a further improvement of the above technical solution: still go up the mould including the crimping, the mould includes connection structure and pressure head on the crimping, the pressure head links to each other with connection structure, the crimping hole has been seted up at the pressure head top, the crimping hole with locating lever crimping nut that cooperatees.

As a further improvement of the above technical solution: the connecting structure and the pressure head are designed to be integrally formed.

As a further improvement of the above technical solution: the connecting structure and the pressure head are of a split type design, and the pressure head and the connecting structure are connected through a fastener or welded.

As a further improvement of the above technical solution: the connecting structure and the pressure head are cylindrical or square.

As a further improvement of the above technical solution: the pressure head is provided with a through hole, and the through hole is communicated with the nut crimping hole.

As a further improvement of the above technical solution: the diameter of the pressure head is smaller than that of the connecting structure.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses a crimping subassembly for crimping nut, including crimping die block and crimping upper die, during the use, the crimping die block is used with the crimping upper die is supporting, and the crimping die block is equipped with the fixing base, and the fixing base is the echelonment structure that the slotted hole was seted up at the middle part, and the device on the PCB board can be avoided contacting with the fixing base to the fixing base of echelonment structure in the crimping process, and the device on the PCB board is not fragile; the top of fixing base is offered and is used for the holding to treat the recess of crimping nut, and the recess is used for the holding to treat the crimping nut, and the nut is put into the recess, and crimping hole on the PCB board is placed with the nut is corresponding, can prevent effectively through the locating lever that crimping in-process nut and PCB board from taking place horizontal migration, can avoid nut crimping process crooked or PCB board layering scheduling problem to appear, and nut crimping is efficient and the crimping is very reliable.

Drawings

Fig. 1 is a schematic perspective view of a crimping base die according to an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of a crimping base die according to an embodiment of the present invention.

Fig. 3 is a schematic top view of a crimping base die according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of the positioning rod according to the present invention in an embodiment.

Fig. 5 is a schematic perspective view of an upper crimping die according to an embodiment of the present invention.

Fig. 6 is a schematic cross-sectional structure view of the upper crimping die in the embodiment of the present invention.

Illustration of the drawings:

1. pressing and connecting the bottom die; 11. a fixed seat; 111. a first body; 112. a second body; 113. a third body; 12. a groove; 13. a positioning mechanism; 131. positioning a rod; 1311. a first column; 1312. a second cylinder; 132. an elastic member; 2. crimping an upper die; 21. a connecting structure; 22. a pressure head; 23. crimping holes; 24. and a through hole.

Detailed Description

The invention will be described in further detail with reference to the drawings and specific examples.

As shown in fig. 1 to 6, the utility model discloses a crimping subassembly for crimping nut, including crimping die block 1 and positioning mechanism 13, crimping die block 1 includes fixing base 11, fixing base 11 sets up the echelonment structure of slotted hole for the middle part, recess 12 has been seted up on the top of fixing base 11, recess 12 is used for the holding to treat the crimping nut, positioning mechanism 13 includes locating lever 131 and elastic component 132, locating lever 131 and elastic component 132 inlay and locate the slotted hole, the first end of locating lever 131 is connected with elastic component 132, the locating lever 131 second end passes from the bottom surface of recess 12, the top of locating lever 131 second end exceeds the last top surface of fixing base 11.

When the crimping bottom die 1 and the crimping upper die 2 are used in a matched mode, the crimping bottom die 1 is provided with a fixed seat 11, the fixed seat 11 is of a stepped structure with a slotted hole in the middle, the fixed seat 11 of the stepped structure can prevent devices on a PCB from contacting the fixed seat 11 in the crimping process, and the devices on the PCB are not prone to being damaged; the top of the fixed seat 11 of the crimping bottom die 1 is provided with a groove 12 for accommodating a nut to be crimped, the nut is placed in the groove 12, the crimping holes 23 in the PCB are placed corresponding to the nut, the nut and the PCB can be effectively prevented from horizontally moving in the crimping process through the positioning rod 131, the problems of deflection or PCB layering and the like in the nut crimping process can be avoided, and the nut crimping is efficient and very reliable in crimping.

In this embodiment, the elastic member 132 is a spring, or other elastic members, such as a spring, may be adopted, the elastic member 132 can support the positioning rod 131, and meanwhile, when an external force acts on the positioning rod 131, since the elastic member 132 has elasticity, the positioning rod 131 can move downward along with the elastic member 132, thereby preventing the external force from damaging the positioning rod 131.

In this embodiment, the positioning rod 131 includes a first cylinder 1311 and a second cylinder 1312, and further, in a preferred embodiment, the first cylinder 1311 and the second cylinder 1312 are cylinders, the diameter of the first cylinder 1311 is smaller than that of the second cylinder 1312, the shape of the slot is matched with that of the positioning rod 131, and the slot is concentric with and arranged in clearance fit with the positioning rod 131. Further, in the preferred embodiment, the first cylinder 1311 and the second cylinder 1312 are integrally formed, the second cylinder 1312 is connected to the elastic member 132, the first cylinder 1311 passes through the bottom surface of the recess 12, and the top of the first cylinder 1311 is higher than the top surface of the fixing base 11.

In this embodiment, the fixing base 11 includes a first body 111, a second body 112 and a third body 113, and the first body 111, the second body 112 and the third body 113 are connected in sequence to form a step shape; the second body 112 has a diameter larger than that of the first body 111, and the second body 112 has a diameter smaller than that of the third body 113. The fixing seat 11 is designed to be in a step shape, and when the nut is pressed, the fixing seat 11 is not easy to contact with other devices on the PCB, so that damage to other devices can be effectively avoided.

In this embodiment, the first body 111, the second body 112 and the third body 113 are cylinders, and in other embodiments, the first body 111, the second body 112 and the third body 113 may also be composed of three squares. In this embodiment, the first body 111, the second body 112 and the third body 113 are integrally formed, so that the integrally formed fixing seat 11 is more stable and reliable when being pressed against a nut, and is easy and convenient to operate without being assembled when being used. In other embodiments, the first body 111, the second body 112, and the third body 113 may be a split design, and the first body 111, the second body 112, and the third body 113 are connected by a fastener or welded. The fixing seat 11 adopts a split design, so that the damaged parts can be maintained or replaced conveniently.

In this embodiment, the crimping subassembly still includes mould 2 in the supporting crimping that uses with crimping die block 1, and mould 2 includes connection structure 21 and pressure head 22 in the crimping, and pressure head 22 links to each other with connection structure 21, and crimping hole 23 has been seted up at pressure head 22 top, and crimping hole 23 cooperatees the crimping nut with locating lever 131. During specific application, the crimping upper die 2 is usually installed on machines such as a press machine, and when the press machine drives the crimping upper die 2 to press on a PCB, the positioning rod 131 just enters the crimping hole 23.

In this embodiment, the connection structure 21 and the pressure head 22 are designed to be integrally formed, so that the reliability is high, and the pressure head 22 is not easy to fall off during crimping. In other embodiments, the connection structure 21 and the ram 22 may be of a split design, with the ram 22 and the connection structure 21 being connected by fasteners or welded. By adopting a split design, when the pressure head 22 is worn, the pressure head 22 can be replaced independently, and the production cost can be effectively reduced.

In this embodiment, the connecting structure 21 and the ram 22 are cylinders, the connecting structure 21 is used for connecting with a machine such as a press, and the diameter of the ram 22 is smaller than that of the connecting structure 21.

In this embodiment, the pressure head 22 is provided with a through hole 24, and the through hole 24 is communicated with the nut crimping hole 23. When the nut is crimped, some fragments are usually generated, the fragments can enter the crimping upper die 2 through the crimping hole 23, and the fragments can be conveniently taken out through the designed through hole 24.

The working principle is as follows: the utility model discloses a crimping device for crimping nut, during the use, at first pass the locating lever 131 with the nut and put into the recess 12 of fixing base 11, then put the PCB board on treating the crimping nut, the crimping hole 23 of PCB board is corresponding with treating the crimping nut and is placed this moment, through holding the crimping handle or utilizing the press to drive the crimping and go up 2 downstream on the mould, the crimping of pressure head 22 is on the PCB board to quick, the nut crimping is accomplished to the efficient. Because locating lever 131 can play when the crimping and fix a position nut and PCB board, can prevent its horizontal migration, fix a position accurate reliable, can ensure that the crimping in-process does not have the skew, crimping is efficient and the askew scheduling problem of nut pressure can not appear.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, a plurality of modifications and decorations without departing from the principle of the present invention should be considered as the protection scope of the present invention.

Claims

1. The utility model provides a crimping subassembly for crimping nut, its characterized in that, includes crimping die block (1) and positioning mechanism (13), crimping die block (1) includes fixing base (11), fixing base (11) are the echelonment structure of middle part offered the slotted hole, recess (12) are seted up on the top of fixing base (11), recess (12) are used for the holding to treat the crimping nut, positioning mechanism (13) are including locating lever (131) and elastic component (132), locating lever (131) and elastic component (132) are inlayed and are located in the slotted hole, locating lever (131) first end is connected with elastic component (132), locating lever (131) second section passes the bottom surface of recess (12), the top of locating lever 131 second end exceeds the last top surface of fixing base (11).

2. The crimping assembly for crimping nuts, as claimed in claim 1, characterized in that the positioning rod (131) comprises a first cylinder (1311) and a second cylinder (1312), the first cylinder (1311) having a smaller diameter than the second cylinder (1312).

3. Crimping assembly for crimping nuts, according to claim 2, characterized in that said slotted hole is shaped to match the shape of said positioning rod (131), said slotted hole being arranged concentrically and with a clearance fit with said positioning rod (131).

4. Crimping assembly for crimping nuts, according to claim 1, characterized in that said fixed seat (11) comprises a first body (111), a second body (112) and a third body (113), said first body (111), second body (112) and third body (113) being connected in sequence in a step shape.

5. Crimping assembly for crimping nuts, according to claim 4, characterized in that said second body (112) has a larger diameter than said first body (111), said second body (112) having a smaller diameter than said third body (113).

6. Crimping assembly for crimping nuts, according to claim 4 or 5, characterized in that said first (111), second (112) and third (113) bodies are cylindrical or square.

7. Crimping assembly for a crimp nut according to claim 4 or 5, characterized in that the first body (111), the second body (112) and the third body (113) are of an integrally formed design.

8. Crimping assembly for a crimp nut according to claim 4 or 5, characterized in that the first body (111), the second body (112) and the third body (113) are of a split design, the first body (111), the second body (112) and the third body (113) being connected by means of fasteners or welded.

9. The crimping assembly for crimping nuts as claimed in claim 1, further comprising a crimping upper die (2), wherein the crimping upper die (2) comprises a connecting structure (21) and a pressure head (22), the pressure head (22) is connected with the connecting structure (21), a crimping hole (23) is formed in the top of the pressure head (22), and the crimping hole (23) is matched with the positioning rod (131) to crimp the nut.

10. Crimping assembly for crimping nuts, according to claim 9, characterized in that the connecting structure (21) and the pressure head (22) are of an integrally formed design.

11. Crimping assembly for crimping nuts, according to claim 9, characterized in that the connecting structure (21) and the ram (22) are of split design, the ram (22) and the connecting structure (21) being connected by means of a fastener or welded connection.

12. Crimping assembly for crimping nuts, according to claim 9, characterized in that said connection structure (21) and the head (22) are cylindrical or square.

13. Crimping assembly for crimping nuts, according to one of claims 9 to 12, characterized in that the head (22) is provided with a through hole (24), said through hole (24) communicating with the crimping hole (23).

14. Crimping assembly for crimping nuts, according to one of claims 9 to 12, characterized in that the diameter of the ram (22) is smaller than the diameter of the connecting structure (21).