CN218957076U

CN218957076U - MCU test fixture

Info

Publication number: CN218957076U
Application number: CN202223312068.2U
Authority: CN
Inventors: 徐淼鑫; 任伟; 姜涛
Original assignee: Skrongtai Suzhou Technology Co ltd
Current assignee: Skrongtai Suzhou Technology Co ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-05-02
Anticipated expiration: 2032-12-09

Abstract

The utility model relates to an MCU test fixture which comprises a bottom plate, wherein a wiring terminal, at least two guide posts for supporting an MCU and a locating pin are arranged on the bottom plate, a groove matched with the edge structure of the MCU is formed in the top end of each guide post, the locating pin is arranged in the groove, and the locating pin is matched with a through hole in the MCU. According to the utility model, reference guidance can be provided for operators when the MCU is placed, so that the installation efficiency is improved, and the positioning pin is prevented from scratching the bottom of the MCU; the enough current-carrying capacity is ensured in the limited space, and damage caused by overheating of the MCU and the tool is avoided; the tool copper column is internally provided with a replaceable screw sleeve, so that the service life is prolonged.

Description

MCU test fixture

Technical Field

The utility model relates to the technical field of new energy electronic control MCU testing, in particular to an MCU testing fixture.

Background

In the production process, the MCU (motor control unit, motor controller) needs to be subjected to load capacity verification, and therefore, the three-phase output part of the MCU needs to be led out to carry (UVW three-phase copper bar, generally an external structure, and can be directly used as an external lead).

In order to fully utilize the limited space, a certain new MCU shape is very special, the UVW three-phase copper bar is of a built-in structure, and the three-phase copper bar cannot be connected in a direct lead mode (the operation is time-consuming and labor-consuming, and the mode cannot be used in mass production test).

Because the current is larger (more than 100A) in the test process and the surface of the MCU to be tested cannot be scratched, designing a stable and reliable tool is important for safe and efficient production according to the structural characteristics of the new MCU, and has a certain reference value for MCU tool design of other complex structures in the future.

Disclosure of Invention

The technical problem to be solved by the utility model is to overcome the defects in the prior art, and to aim at the structural characteristics of a certain new MCU, the utility model provides an MCU test fixture which can provide reference guide for operators when placing the MCU, improve the installation efficiency and avoid the locating pin from scratching the bottom of the MCU; the enough current-carrying capacity is ensured in the limited space, and damage caused by overheating of the MCU and the tool is avoided; the tool copper column is internally provided with a replaceable screw sleeve, so that the service life is prolonged.

According to the technical scheme provided by the utility model, the MCU comprises a bottom plate, wherein a wiring terminal used for being connected with the MCU, at least two guide posts used for supporting the MCU and a positioning pin are arranged on the bottom plate, a groove matched with the edge structure of the MCU is arranged at the top end of the guide post, the positioning pin is arranged in the groove, and the positioning pin is matched with a through hole on the MCU.

In one embodiment of the utility model, the guide posts comprise a first guide post and a second guide post which are arranged on two oblique angles of the bottom plate, grooves matched with two end angles of the MCU are respectively arranged at the top ends of the first guide post and the second guide post, positioning pins are arranged in the grooves, and the positioning pins penetrate through the end angles.

In one embodiment of the present utility model, the method further comprises a first support column and a second support column, wherein the first support column and the second support column are respectively used for supporting under the other two end angles of the MCU, and the heights of the top ends of the first support column and the second support column are consistent with the heights of the bottom ends of the grooves.

In one embodiment of the utility model, the connecting terminal comprises two groups of connecting terminals, wherein any connecting terminal comprises an insulating shell, a copper column used for being connected with an MCU, an iron sheet and a copper sheet, the iron sheet is horizontally arranged in the insulating shell, and the copper sheet is horizontally arranged on the iron sheet; one end of the copper column is connected with the copper sheet, and the other end extends out of the insulating shell; the insulating shell is provided with an opening, and the copper sheet is connected with an external cable through the opening.

In one embodiment of the present utility model, any one of the connection terminals includes three copper posts, iron pieces, and copper sheets, wherein the copper posts, the iron pieces, and the copper sheets are in one-to-one correspondence to form connection groups, and the three connection groups are isolated from each other in the insulating housing.

In one embodiment of the utility model, the copper column is connected with the copper sheet through a bolt, and a threaded sleeve matched with the bolt is arranged in the copper column.

In one embodiment of the utility model, the central area of the base plate is provided with a notch.

In one embodiment of the utility model, pull rings are arranged on two sides of the bottom plate.

In one embodiment of the utility model, the guide posts are 45 steel guide posts.

In one embodiment of the utility model, the copper pillars are red copper pillars.

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

1. according to the utility model, the guide post with the groove is arranged, so that when an operator places the MCU, a reference can be provided for the operator, the installation efficiency is improved, and the bottom of the MCU is prevented from being scratched;

2. according to the utility model, the red copper column is connected with the MCU, so that enough current-carrying capacity can be ensured in a limited space, damage caused by overheating of the MCU and the tool is avoided, and the service life is prolonged.

3. According to the utility model, the replaceable screw sleeve adapting bolt is adopted, so that the service life of the tooling copper column is prolonged.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings.

FIG. 1 is a block diagram of the MCU of the present utility model mounted to a test fixture;

FIG. 2 is a block diagram of the test fixture of the present utility model.

Description of the specification reference numerals: 1-MCU; 2-a bottom plate; 3-an insulating housing; 4-iron sheet; 5-copper sheet; 6-a cable; 7-a first support column; 8-a first guide post; 9-a first pull ring; 10-copper columns; 11-a second support column; 12-a second guide post; 13-locating pins; 14-a second pull ring; 15-notch.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.

Referring to fig. 1 and 2, in order to provide a reference for operators when the MCU1 is placed, improve the installation efficiency and avoid the bottom scratch of the MCU1, the utility model comprises a bottom plate 2, wherein the bottom plate 2 is provided with a wiring terminal for connecting with the MCU, at least two guide posts for supporting the MCU1 and a positioning pin 13, the top end of each guide post is provided with a groove adapted to the edge structure of the MCU1, the groove is internally provided with the positioning pin 13, and the positioning pin 13 is adapted to a through hole on the MCU 1.

Specifically, when the operating personnel places the MCU1 on the fixture, the through hole on the MCU1 is required to be aligned with the locating pin 13, so that the locating pin 13 is penetrated into the through hole to achieve the purpose of fixing the MCU1 on the fixture, therefore, at least two locating pins 13 are required to fix the position of the MCU1, when the two locating pins 13 are aligned, errors exist in the position of the MCU1, namely, the locating pin 13 cannot be aligned once by the through hole, at the moment, the MCU1 is supported on the locating pin 13, in order to enable the locating pin 13 to penetrate into the through hole of the MCU1, the MCU1 is required to be moved, the locating pin 13 is easy to scratch the bottom of the MCU1 when being moved and calibrated, the installation time is increased by the repeated alignment process, and the installation efficiency is reduced. According to the utility model, two guide posts are arranged, the top ends of the guide posts are provided with grooves, the shapes of the grooves are matched with the edge structure of the MCU1, so that the MCU1 is firstly contacted with the guide posts when placed, and is downwards placed along the grooves in the placing process, so that the through holes on the MCU1 can be aligned with the positioning pins 13 at one time, and the fixing arrangement is completed. The structure of the groove can be selected according to the position where the actual guide post is arranged and the edge structure of the MCU1 at the position, and the groove is connected with the MCU1 in an adaptive manner, and the description is omitted here.

Further, the guide posts comprise a first guide post 8 and a second guide post 12 which are arranged on two oblique angles of the bottom plate, grooves which are matched with two end angles of the MCU1 are respectively formed in the top ends of the first guide post 8 and the second guide post 12, positioning pins 13 are arranged in the grooves, and the end angles are penetrated by the positioning pins 13.

The novel MCU further comprises a first supporting column 7 and a second supporting column 11, wherein the first supporting column 7 and the second supporting column 11 are respectively used for being supported under the other two end angles of the MCU1, and the heights of the top ends of the first supporting column 7 and the second supporting column 11 are consistent with the height of the bottom end of the groove.

In the embodiment of the utility model, the first guide post 8 and the second guide post 12 are respectively arranged at two oblique angles on the bottom plate 2, the other two end angles on the bottom plate 2 are provided with the first support post 7 and the second support post 11, the grooves of the first guide post 8 and the second guide post 12 are respectively matched with the two end angle structures at the corresponding positions of the MCU1, the positioning pins 13 in the grooves of the first guide post 8 and the second guide post 12 respectively penetrate through the through holes at the two end angles of the MCU1, the first support post 7 and the second support post 11 are supported below the other two oblique angles of the MCU1, and the first guide post 8, the second guide post 12, the first support post 7 and the second support post 11 form four-angle supports, so that the structure of the tool clamp is more stable. The heights of the top ends of the first support column 7 and the second support column 11 are consistent with the height of the bottom end of the groove, so that the MCU1 is horizontally placed on the bottom plate 2, and the fixture structure is more stable.

Further, the electric connector comprises two groups of connecting terminals, wherein any connecting terminal comprises an insulating shell 3, a copper column 10 used for being connected with an MCU, an iron sheet 4 and a copper sheet 5, the iron sheet 4 is horizontally arranged in the insulating shell 3, and the copper sheet 5 is horizontally arranged on the iron sheet 4; one end of the copper post 10 is connected with the copper sheet 5, and the other end extends out of the insulating shell 3; the insulating housing 3 is provided with an opening, and the copper sheet 5 is connected with an external cable 6 through the opening.

Any binding post includes three copper post 10, iron sheet 4 and copper sheet 5, copper post 10, iron sheet 4 and copper sheet 5 one-to-one form the connection group, and three the connection group is kept apart each other in insulating housing 3.

Specifically, any binding post includes three copper posts 10, forms the copper bar, and the copper bar on the binding post is connected with the switching copper bar in the MCU1 in order to realize MCU1 and binding post's connection. A copper sheet 5 is arranged below a copper column 10, an iron sheet 4 is arranged below the copper sheet 5, and the iron sheet 4 with higher hardness is arranged below the copper sheet 5 because the copper sheet 5 is softer, so that the lower iron sheet 4 can realize the required electric connection when the copper sheet 5 is damaged. The insulating housing 3 is provided with an opening, the copper sheet 5 is exposed through the opening in the insulating housing 3, and the external cable 6 can be connected to the copper sheet 5 through the opening, so that the copper sheet can be connected with the MCU1 to complete the required test.

Further, the copper column 10 is connected with the copper sheet 5 through a bolt, and a threaded sleeve matched with the bolt is arranged in the copper column 10.

Specifically, all be equipped with the through-hole on iron sheet 4 and the copper sheet 5, and the through-hole on iron sheet 4 overlaps with the through-hole on the copper sheet 5, and copper post 10 is on copper sheet 5 through the bolted connection that runs through iron sheet 4 and copper sheet 5 through-hole, in order to avoid the damage that the friction brought, be equipped with in the copper post 10 with the swivel nut of bolt adaptation can prolong copper post 10's life.

Further, in order to reduce the weight of the tool fixture of the present utility model, a notch 15 is provided in the central area of the bottom plate 2.

Further, in order to facilitate the handling, the two sides of the bottom plate 2 are provided with pull rings, namely a first pull ring 9 and a second pull ring 14, and the specific structure of the pull rings is consistent with the prior art, and is well known to those skilled in the art, and will not be described herein.

Further, the guide post is a 45 steel guide post, so that the guide post has higher strength and deformation resistance.

Further, the copper pillar 10 is a red copper pillar 10. Adopt red copper post 10 to be connected with MCU1, can guarantee enough current-carrying capacity in the limited space, avoid the damage that MCU1 and frock overheat leads to, increase of service life.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.

Claims

1. MCU test fixture, its characterized in that: the automatic positioning device comprises a bottom plate, wherein a wiring terminal connected with an MCU, at least two guide posts used for supporting the MCU and positioning pins are arranged on the bottom plate, a groove matched with the edge structure of the MCU is formed in the top end of each guide post, the positioning pins are arranged in the grooves, and the positioning pins are matched with through holes in the MCU.

2. The MCU test fixture of claim 1, wherein: the guide posts comprise a first guide post and a second guide post which are arranged on two oblique angles of the bottom plate, grooves which are matched with two end angles of the MCU are respectively formed in the top ends of the first guide post and the second guide post, and the locating pins penetrate through the end angles.

3. The MCU test fixture of claim 2, wherein: still include first support column and second support column, first support column with the second support column is used for supporting respectively under MCU two other terminal angles, the height on first support column and second support column top with the height of recess bottom is unanimous.

4. The MCU test fixture of claim 1, wherein: the connecting terminal comprises two groups of connecting terminals, wherein any connecting terminal comprises an insulating shell, a copper column, an iron sheet and a copper sheet, wherein the copper column, the iron sheet and the copper sheet are used for being connected with an MCU; one end of the copper column is connected with the copper sheet, and the other end extends out of the insulating shell; the insulating shell is provided with an opening, and the copper sheet is connected with an external cable through the opening.

5. The MCU test fixture of claim 4, wherein: any binding post includes three copper post, iron sheet and copper sheet, copper post, iron sheet and copper sheet one-to-one form the connection group, and three the connection group is in insulating housing is internal keeps apart each other.

6. The MCU test fixture of claim 4, wherein: the copper column is connected with the copper sheet through a bolt, and a threaded sleeve matched with the bolt is arranged in the copper column.

7. The MCU test fixture of claim 1, wherein: and a notch is arranged in the central area of the bottom plate.

8. The MCU test fixture of claim 1, wherein: pull rings are arranged on two sides of the bottom plate.

9. The MCU test fixture of claim 1, wherein: the guide post is a 45 steel guide post.

10. The MCU test fixture of claim 4, wherein: the copper column is a red copper column.