CN113161774B

CN113161774B - Blind-mating grounding clamping piece structure of electrical cabinet chassis

Info

Publication number: CN113161774B
Application number: CN202110355708.9A
Authority: CN
Inventors: 王臻卓; 赵丹丹; 袁路路; 王明绪
Original assignee: Henan Polytechnic Institute
Current assignee: Henan Polytechnic Institute
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2022-10-21
Anticipated expiration: 2041-04-01
Also published as: CN113161774A

Abstract

The invention belongs to the technical field of electrical cabinet cases, and discloses a blind-insertion grounding clamping piece structure of an electrical cabinet case, which comprises a plastic case shell, a PCB (printed circuit board) and a socket assembly body, wherein the plastic case shell is connected with a guide piece, the guide piece is provided with external threads, the guide piece is connected with a correction nut through threads, an inner hole of the correction nut is in a wedge shape with a large upper part and a small lower part, the guide piece is provided with a guide hole, the guide hole is also in a wedge shape with a large upper part and a small lower part, the PCB is connected with a limiting column, a first locking joint and a second locking joint, the limiting column penetrates through the guide hole, the first locking plug is provided with an internal threaded hole, the internal threaded hole is connected with a fastening screw, the socket assembly body is connected to the inner side of the plastic case shell, the socket assembly body is connected with a locking jack, and the locking jack is matched with the first locking plug and the second locking plug; the invention solves the problem that the locking plug and the socket component of the cabinet of the electrical cabinet in the prior art are difficult to align when being plugged in a blind way, and is suitable for loading electrical equipment.

Description

Blind-mating grounding clamping piece structure of electrical cabinet chassis

Technical Field

The invention relates to the technical field of electrical cabinet cases, in particular to a blind-mating grounding clamping piece structure of an electrical cabinet case.

Background

The electrical cabinet case is usually used for loading various electrical equipment such as relay equipment, a circuit breaker, a load switch, a contactor, a measuring instrument and the like, most of the materials of the case in an electrical control cabinet at home at present are high-quality aluminum alloy profiles or galvanized steel sheets, because the metal case shell can be grounded and conductive firstly, and can be provided with some heavy-load wiring terminals secondly, the metal case shell generally comprises a case main shell and a rear panel.

In order to solve the above problems, chinese patent (patent publication No. CN 210630027U) discloses a blind-mating grounding clip structure of an electrical cabinet chassis, which includes a plastic chassis housing, a PCB board, a chassis grounding wire interface post, a grounding conductive clip, an elastic assisting spring, and a fastening nut; the PCB is arranged on the inner side of the plastic case shell, a PCB grounding electrode is arranged on the PCB, the case grounding wire interface column is arranged in a through hole formed in the plastic case shell, the grounding conductive clamping piece and the elastic power-assisted reed are arranged on the inner side of the plastic case shell, one end of the grounding conductive clamping piece is connected with one end of the case grounding wire interface column in the plastic case shell, the other end of the grounding conductive clamping piece is in contact connection with the PCB grounding electrode, the elastic power-assisted reed is attached to the grounding conductive clamping piece, and the fastening nut is arranged on the outer side of the plastic case shell and is in threaded connection with the case grounding wire interface column; the case grounding wire interface column is propped against the inner side of the plastic case shell through one end of the grounding conductive clamping piece and one end of the elastic assisting reed, and the fastening nut is locked from the outer side of the plastic case shell and fixedly connected to the plastic case shell.

According to the scheme, the plastic case shell is adopted, so that the cost, the weight and the production period of the case are reduced, the case shell is provided with the interface column, the interface column is connected with the grounding conductive clamping piece and the elastic power-assisted reed to form the grounding assembly, and the grounding assembly is connected with the PCB grounding electrode on the PCB in the case to realize the electric conduction; however, the device is still difficult to align and insert when the locking plug and the socket assembly are in blind-insertion connection, and therefore an electrical cabinet chassis capable of automatically aligning hole sites of the locking plug and the socket assembly during blind-insertion connection is needed.

Disclosure of Invention

The invention aims to provide a blind-mating grounding clamping piece structure of an electrical cabinet chassis, which solves the problem that a locking plug and a socket assembly of the electrical cabinet chassis in the prior art are difficult to align when being plugged in a blind manner.

In order to achieve the above purpose, the invention provides the following technical scheme:

the basic technical scheme provided by the invention is as follows: the blind-mating grounding clamping piece structure of the electrical cabinet chassis comprises a plastic chassis shell, a PCB (printed circuit board) and a socket assembly body, wherein a guide piece is connected to the lower side of the plastic chassis shell, external threads are formed in the outer wall of the free end of the guide piece, the guide piece is connected with a correction nut through threads, an inner hole of the correction nut is in a wedge shape with a large top and a small bottom, a guide hole is formed in the guide piece, the guide hole is also in a wedge shape with a large top and a small bottom, the PCB is connected with a limiting column and a locking plug, the limiting column is matched with the outlet end of the correction nut, the free end of the limiting column is exposed out of the guide piece, the limiting column is connected with a ground wire, the socket assembly body is fixedly connected to the inner side wall of the plastic chassis shell, the socket assembly body is connected with locking jacks, the locking jacks and the locking plugs are multiple in number, and the locking jacks are matched with the locking plugs.

The principle of the basic technical scheme is as follows: when the electrical cabinet case is assembled, firstly, the plastic case shell is fixed, then, the socket component body is fixedly connected to the inner side of the plastic case shell through bolt combination, a wiring terminal on the PCB is arranged, when the PCB and the socket component body are connected, a locking plug and a locking jack are shielded and invisible, blind plugging is needed, when blind plugging is carried out, a guide hole and a limit column are visible, the limit column slides downwards along a wedge-shaped guide hole, the free end of the limit column penetrates out of the guide hole to enable a correcting nut to penetrate through the limit column, the correcting nut is fixedly connected with a guide piece through threads, the limit column is matched with the outlet end of the correcting nut, in the process of connecting the correcting nut and the guide piece, the limit column is coaxial with the correcting nut, the correcting nut is coaxial with the guide piece, even if the limiting piece and the guide piece are in a coaxial state, the locking plug is aligned with the locking jack, the blind plugging of the PCB is completed, after the electrical cabinet case is assembled, the ground wire is connected with the limit column, the current on the PCB flows to the limit column through the locking plug, and finally, the ground wire is guided away through the ground current.

The basic technical scheme has the beneficial effects that: the plastics chassis casing has reduced quick-witted case cost, weight and production cycle, utilize wedge-shaped guiding hole direction, be convenient for peg graft spacing post, utilize correction nut and guide threaded connection can locking plug's position at last, make it align with the locking jack, whole process is visual, accomplish the blind grafting of locking plug and locking jack, the problem that is difficult to when having solved prior art regulator cubicle machine case locking plug and socket subassembly blind grafting well is adjusted promptly, the guiding hole is exposed to the terminal surface of spacing post, also convenient and fast with being connected of bottom line, guarantee the electrical safety of plastics regulator cubicle.

Preferably, the locking socket and the locking plug are wedge-shaped.

Through the arrangement, the wedge-shaped locking plug is large in connecting end and small in free end, the wedge-shaped locking jack is large in entering end and small in exiting end, the inserting locking plug is easy to insert and can be automatically aligned, the wedge surface of the locking plug is abutted to the wedge surface of the locking jack, and the fastening effect of the locking plug and the locking jack is improved.

Preferably, the locking plug includes first locking plug and second locking plug, first locking plug with second locking plug interval sets up, the internal thread hole has been seted up to the free end of first locking plug, the through-hole has been seted up to the lateral wall of plastics machine case casing, fastening screw is worn to be equipped with by the through-hole, fastening screw with first locking plug passes through threaded connection.

Through the setting, utilize the screw to be connected first locking plug and plastics case casing, the in-process of connecting improves the grafting effect of locking plug and locking jack because the effect of screw thread will lock the plug to plastics case casing one side pulling, has reduced the intensity of labour of grafting PCB board, and fastening screw is in the same place PCB board, socket subassembly body and plastics case casing three fastening connection, still further improvement the stability of overall structure.

Preferably, the limiting column is provided with a connecting port, and the connecting port is used for a grounding wire.

Through the arrangement, when the ground wire is connected, the ground wire penetrates through the connecting port and is fixedly bound, the operation is simple, and the connection is reliable.

Preferably, the inner side of the plastic case shell is further connected with a positioning column, the PCB board is provided with a positioning hole, and the positioning hole comprises a sliding part and a positioning part.

Through the arrangement, in the inserting process, the positioning column penetrates through the positioning hole and is in sliding connection with the sliding portion, an operator can visually observe the position of the positioning portion and slide towards one side of the positioning portion, blind inserting connection of the locking plug and the locking jack is facilitated, and the working efficiency of the blind inserting connection is improved.

Drawings

Fig. 1 is an exploded view of a blind-mate grounding clip structure of an electrical cabinet chassis according to the present invention;

fig. 2 is a left side view of a blind-mate grounding clip structure of an electrical cabinet chassis according to the present invention;

FIG. 3 isbase:Sub>A cross-sectional view A-A of FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 3 at C;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 6 is an enlarged partial view taken at D in FIG. 5;

the names of corresponding labels in the drawings are:

the plastic machine case comprises a plastic machine case shell 1, a guide part 11, a through hole 12, a guide hole 13, a positioning column 14, a PCB 2, a limiting column 21, a first locking plug 22, a second locking plug 23, a connecting port 24, a positioning hole 25, a socket component body 3, a locking jack 31, a fastening screw 4 and a correcting nut 5.

Detailed Description

The invention is described in further detail below with reference to the following figures and embodiments:

as shown in fig. 1 to 6, a blind-mate grounding clip structure of an electrical cabinet chassis, including a plastic cabinet housing 1, a PCB 2 and a socket assembly body 3, a guide 11 is fixedly bonded to a left lower side of the plastic cabinet housing 1, an external thread is provided on an outer wall of a lower end of the guide 11, the guide 11 is connected with a correction nut 5 through a thread, an inner hole of the correction nut 5 is a wedge with a large upper end and a small lower end, a guide hole 13 is provided in the guide 11, the guide hole 13 is also a wedge with a large upper end and a small lower end, a limiting column 21 is fixedly bonded to a left lower side of the PCB 2, a connector 24 is provided on a lower side of the limiting column 21, the lower end of the limiting column 21 penetrates out of the guide 11, the limiting column 21 is matched with an outlet end of the correction nut 5, the first locking plug 22 and a sixth locking plug 23 are fixedly bonded to a left side of the PCB 2, two second locking plugs 23 are provided between adjacent first locking plugs 22, an internal threaded hole is provided at a free end of the first locking plug 22, the socket assembly body 3 is fixedly connected with a socket assembly through a bolt combination, a socket assembly fixing hole 31 and a socket assembly fixing plug 12, a plug 12 and a plug 12, a plug 12 and a plug 12 are provided in a plug connecting hole, a plug 12, a plug hole.

The specific implementation process is as follows:

fixing the plastic case shell 1, fixedly connecting the socket component body 3 to the inner side of the plastic case shell 1 by utilizing bolt combination, arranging a wiring terminal on the PCB 2, then inserting the limiting column 21 into the guide hole 13, enabling the positioning hole 25 to penetrate through the positioning column 14, enabling the correcting nut 5 to penetrate through the lower end of the limiting column 21 to slide upwards, enabling the correcting nut 5 to rotate upwards along the axial direction of the guide part 11 by utilizing threads, enabling the positioning column 14 to slide towards the positioning part along the sliding part on the positioning hole 25, enabling the locking plug to be aligned and plugged with the locking jack 31, enabling the fastening screw 4 to penetrate through the through hole 12 to be connected with the internal thread of the first locking plug 22, enabling the first locking plug 22 to be connected with the plastic case shell 1 under the action of the fastening screw 4, finally connecting the ground wire to the connecting port 24 at the lower end of the limiting column 21, enabling the current on the socket component body 3 in the electrical cabinet and the PCB to flow to the limiting column 21 through the locking plug and finally being conducted away through the ground wire.

The above description is only an example of the present invention, and the common general knowledge of the technical solutions or characteristics known in the solutions is not described herein too much. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several variations and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides a blind-mate ground clamping piece structure of regulator cubicle machine case which characterized in that: including plastics machine case casing (1), PCB board (2) and socket subassembly body (3), the downside of plastics machine case casing (1) is connected with guide (11), the external screw thread has been seted up to the outer wall of guide (11) free end, there are correction nut (5) guide (11) through threaded connection, the hole of correction nut (5) is big-end-up's wedge, guiding hole (13) have been seted up in guide (11), guiding hole (13) also are big-end-up's wedge, PCB board (2) are connected with spacing post (21) and locking plug, spacing post (21) with the exit end cooperation of correction nut (5) sets up, the free end of spacing post (21) exposes guide (11), spacing post (21) and ground connection, socket subassembly body (3) fixed connection be in the inside wall of plastics machine case casing (1), socket subassembly body (3) are connected with locking jack (31), locking jack (31) with locking plug jack all has many jacks to match and many sets up.

2. The blind-mating grounding clip structure of the electrical cabinet chassis according to claim 1, wherein: the locking jack (31) and the locking plug are wedge-shaped.

3. The blind-mating grounding clip structure of the electrical cabinet chassis according to claim 2, wherein: locking plug includes first locking plug (22) and second locking plug (23), first locking plug (22) with second locking plug (23) intermittent type sets up, internal thread hole has been seted up to the free end of first locking plug (22), through-hole (12) have been seted up to the lateral wall of plastics quick-witted case casing (1), fastening screw (4) are worn to be equipped with in through-hole (12), fastening screw (4) with first locking plug (22) pass through threaded connection.

4. The blind-mating grounding clip structure of the electrical cabinet chassis according to claim 1, wherein: and a connecting port (24) is formed in the limiting column (21), and the connecting port (24) is used for grounding wires.

5. The blind-mating grounding clip structure of the electrical cabinet chassis according to claim 1, wherein: the plastic case is characterized in that the inner side of the plastic case shell (1) is further connected with a positioning column (14), a positioning hole (25) is formed in the PCB (2), and the positioning hole (25) comprises a sliding portion and a positioning portion.