CN109586051B

CN109586051B - Device with secondary locking function

Info

Publication number: CN109586051B
Application number: CN201811494635.6A
Authority: CN
Inventors: 刘立锋; 周斌; 杨留锁
Original assignee: Volt Electronics Suzhou Co ltd
Current assignee: Volt Electronics Suzhou Co ltd
Priority date: 2018-12-07
Filing date: 2018-12-07
Publication date: 2020-08-28
Anticipated expiration: 2038-12-07
Also published as: CN109586051A

Abstract

The invention discloses a device with a secondary locking function, which is used for fixing a wiring terminal, a shunt and a product shell, the device includes the non-standard nut, the non-standard bolt, ordinary bolt, the non-standard nut is used for with casing fixed connection, the non-standard nut is equipped with first screw hole along the axial, the inner wall of first screw hole is equipped with first internal thread, be equipped with on the non-standard bolt with first interior screw-thread fit's first external screw thread, the non-standard bolt is connected with first screw hole and is fixed with the shunt, the non-standard bolt is equipped with the through-hole that link up along the axial, be equipped with the second screw hole along the axial in the first screw hole, the aperture of second screw hole is less than the aperture of first screw hole, the inner wall of second screw hole is equipped with the second internal thread, be equipped with on the ordinary bolt with second interior screw-thread fit's second external screw thread, ordinary bolt runs through behind the. Realize secondary locking, avoid the shunt atress swing to lead to the wire to tear after the bolt is unscrewed.

Description

Device with secondary locking function

Technical Field

The invention relates to the technical field of fastening equipment, in particular to a device with a secondary locking function.

Background

The current and voltage monitoring module is widely applied to the field of new energy automobiles, and can achieve the functions of collecting bus current and voltage values in real time, displaying, calculating the SOC value of the storage battery and judging whether the relay is adhered or not.

An important functional component in the current and voltage monitoring module is a current divider. As shown in fig. 1, which is a schematic view of an installation of a conventional shunt, in the figure, 11 is a housing of a current and voltage monitoring module, 12 is a shunt, 13 is a common bolt, 14 is a terminal, the housing 11 and the shunt 12 are respectively provided with a threaded hole and a through hole matched with the common bolt 13, the common bolt 13 penetrates through the shunt 12 and then is locked with the housing 11, so that the shunt 12 is locked with the housing 11 of the current and voltage monitoring module.

It has the following problems: when installing the client terminal, the locking bolt needs to be unscrewed. At that time, the shunt is prone to deflection under force. Because the shunt carries out signal transmission through 1.0 square wire with inside PCBA mainboard of product, the shunt easily tears the wire after the swing, influences the normal use of product.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a device with a secondary locking function, which is safe, reliable, strong in stability and capable of avoiding the wire from being pulled apart, and adopts the following technical scheme:

a device with a secondary locking function is used for fixing a wiring terminal, a shunt and a product shell, and comprises a non-standard nut, a non-standard bolt and a common bolt, wherein the non-standard nut is used for being fixedly connected with the shell, the non-standard nut is provided with a first threaded hole along the axial direction, the inner wall of the first threaded hole is provided with a first internal thread, the non-standard bolt is provided with a first external thread matched with the first internal thread, the non-standard bolt is connected with the first threaded hole to fix the shunt, the non-standard bolt is provided with a through hole along the axial direction, the first threaded hole is internally provided with a second threaded hole along the axial direction, the aperture of the second threaded hole is smaller than that of the first threaded hole, the inner wall of the second threaded hole is provided with a second internal thread, the common bolt is provided with a second external thread matched with the second internal thread, and the common bolt is connected with the second threaded hole after penetrating through, and fixing the wiring terminal and the product shell.

As a further improvement of the invention, the diameter of the first internal thread is bmm, and the diameter of the second internal thread is amm, so that a +4 is less than or equal to b.

As a further improvement of the invention, the diameter of the through hole is dmm, and d is more than or equal to a + 1.

As a further improvement of the invention, the non-standard nut is fixed with the product shell in an embedded mode.

The invention has the beneficial effects that:

the device with the secondary locking function comprises a non-standard nut, a non-standard bolt and a common bolt, wherein the non-standard bolt is connected with a first threaded hole to fix the shunt, and then the common bolt penetrates through the through hole and is connected with a second threaded hole to fix the wiring terminal. Realize secondary locking, avoid the bolt to unscrew back shunt atress swing, avoid the wire to be pulled apart, avoided binding post to warp simultaneously, guaranteed the measuring accuracy.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic view of an installation of a prior art diverter;

FIG. 2 is a schematic view showing the installation of the device with the secondary locking function according to the embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a device with a secondary locking function in an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a non-standard nut in an embodiment of the invention;

FIG. 5 is a schematic view of the internal structure of a nonstandard nut according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a non-standard bolt in an embodiment of the present invention;

fig. 7 is a schematic view of the internal structure of a non-standard bolt according to an embodiment of the present invention.

Description of the labeling: 11. a product housing; 12. a flow divider; 13. a wiring terminal; 14. a plain bolt; 20. a non-standard nut; 21. a first threaded hole; 22. a second threaded hole; 30. a non-standard bolt; 31. a first external thread; 32. a through hole; 40. a plain bolt; 41. a second external thread; 42. and a pressing sheet.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

As shown in fig. 2 to 7, the device with the secondary locking function in this embodiment is used to fix the connection terminal 13, the shunt 12, and the product housing 11.

The device comprises a non-standard nut 20, a non-standard bolt 30 and a common bolt 40, wherein the non-standard nut 20 is fixedly connected with the shell 11, the non-standard nut 20 is provided with a first threaded hole 21 along the axial direction, the inner wall of the first threaded hole 21 is provided with a first internal thread, the non-standard bolt 30 is provided with a first external thread 31 matched with the first internal thread, and the non-standard bolt 30 is connected with the first threaded hole 21 to fix the flow divider 12. Preferably, the non-standard nut 20 is fixed to the product housing 11 in a pre-embedded manner.

The nonstandard bolt 30 is provided with a through hole 32 which is communicated with the first threaded hole 21 along the axial direction, the second threaded hole 22 is arranged in the first threaded hole 21, the aperture of the second threaded hole 22 is smaller than that of the first threaded hole 21, a second internal thread is arranged on the inner wall of the second threaded hole 22, a second external thread 41 which is matched with the second internal thread 22 is arranged on the common bolt 40, and the common bolt 40 is connected with the second threaded hole 22 after penetrating through the through hole 32 to fix the wiring terminal 13.

Specifically, the diameter of the first internal thread is bmm, the diameter of the second internal thread is amm, the diameter of the through hole is dmm, and a +4 is less than or equal to b and d is greater than or equal to a + 1.

Preferably, the head of the common bolt 40 is provided with a pressing piece 42, and the pressing piece 42 is integrally formed with the common bolt 40 to facilitate fixing the connection terminal 13.

When the novel connecting terminal is used, the non-standard bolt 30 is connected with the first threaded hole 21 to fix the shunt 12, then the common bolt 40 penetrates through the through hole 32 and then is connected with the second threaded hole 22 to fix the connecting terminal 13, and secondary locking is achieved.

The above embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.

Claims

1. The utility model provides a take device of secondary locking function for it is fixed with binding post, shunt and product casing, its characterized in that: the device comprises a non-standard nut, a non-standard bolt and a common bolt, wherein the non-standard nut is used for being fixedly connected with a shell, the non-standard nut is provided with a first threaded hole along the axial direction, the inner wall of the first threaded hole is provided with a first internal thread, the non-standard bolt is provided with a first external thread matched with the first internal thread, the non-standard bolt is connected with the first threaded hole to fix the flow divider, the non-standard bolt is provided with a through hole along the axial direction, the first threaded hole is internally provided with a second threaded hole along the axial direction, the aperture of the second threaded hole is smaller than that of the first threaded hole, a second internal thread is arranged on the inner wall of the second threaded hole, and the common bolt is provided with a second external thread matched with the second internal thread, penetrates through the through hole and is connected with the second threaded hole, and the wiring terminal is fixed with the product shell.

2. The device with the secondary locking function as claimed in claim 1, wherein the diameter of the first internal thread is bmm, and the diameter of the second internal thread is amm, satisfying a +4 ≦ b.

3. The device with secondary locking function as claimed in claim 2, wherein the diameter of the through hole is dmm, and d ≧ a +1 is satisfied.

4. The device with the secondary locking function as claimed in claim 1, wherein the non-standard nut is fixed with the product shell in a pre-embedded manner.