Terminal block

Abstract

The invention provides a terminal block capable of shortening assembling operation time. The present invention is provided with: a housing (10) that has a fitting part (11) that is inserted from a front end (11a) into a through-hole-shaped fitting hole (501a) that fits into a wall body (501) of an object to be assembled, and that projects the front end (11a) from one wall surface (501b) of the wall body (501) at a fitting completion position with respect to the fitting hole (501a); an electrical connection member (20) housed in the housing (10) and configured to be electrically connected to a counterpart; and a holding member (40) that holds the housing (10) in the wall body (501) in the fitting completion position, the holding member (40) being fitted in a groove (11c) in the front end (11a) of the fitting part (11) in the fitting completion position and being engaged with one wall surface (501b) of the wall body (501) in the fitted state, and the housing (10) in the fitting completion position being held in the wall body (501).

Description

Technical Field

[0001] The present invention relates to a terminal block. Background Art

[0002] Conventionally, the terminal block is assembled to the object by inserting a cylindrical engaging portion in the housing into an engaging hole in the wall of the object to be assembled, and fastening the flange of the housing to the wall, for example, by screwing. Such a terminal block is disclosed in, for example, the following patent documents 1 and 2.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2022-066811

[0006] Patent Document 2: Japanese Patent Application Publication No. 2023-043777 Summary of the invention

[0007] Technical problem that the invention aims to solve

[0008] However, the conventional terminal block adopts a screw-fastening structure between the terminal block and the wall of the assembly object, and thus requires a screw-fastening operation, which requires a lot of man-hours.

[0009] Therefore, an object of the present invention is to provide a terminal block capable of shortening the assembly work time.

[0010] Technical solutions to the problem

[0011] The terminal block of the present invention is characterized in that it comprises: a shell, the shell having a fitting portion, the fitting portion being inserted from the front end into a fitting hole in the shape of a through hole in the wall body of the assembly object, and the front end being protruded more than one wall surface of the wall body in the fitting completion position relative to the fitting hole; an electrical connection component, the electrical connection component being accommodated in the shell and being responsible for the electrical connection with the other party; and a retaining component, the retaining component retaining the shell on the wall body in the fitting completion position, the retaining component being embedded in the groove portion at the front end of the fitting portion at the fitting completion position, and being locked to the one wall surface of the wall body in this embedded state, thereby retaining the shell at the fitting completion position on the wall body.

[0012] Effects of the Invention

[0013] In the terminal block of the present invention, the housing is assembled to the wall by inserting the fitting portion into the fitting hole that fits into the wall. Furthermore, in the terminal block, the housing is held to the wall by inserting the retaining member into the groove at the front end of the fitting portion extending from the fitting hole. In this way, the terminal block of the present invention does not need to perform a tightening operation of a screw member as in the past, and the housing can be held to the wall only by inserting the retaining member, thereby shortening the assembly operation time relative to the wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an exploded perspective view showing a terminal block according to the embodiment.

[0015] Figure 2 It is a perspective view showing a terminal block according to the embodiment.

[0016] Figure 3 yes Figure 2 XX line cross-sectional view.

[0017] Description of Reference Numerals

[0018] 1 Terminal block

[0019] 10 Housing

[0020] 11 Chimeric part

[0021] 11a Front End

[0022] 11b Backend

[0023] 11c Groove

[0024] 12 Flange

[0025] 20 Electrical connection parts

[0026] 40 Holding components

[0027] 50 terminal element

[0028] 501 Wall

[0029] 501a Fitting hole

[0030] 501b A wall

[0031] 501c Another wall DETAILED DESCRIPTION

[0032] Hereinafter, embodiments of the terminal block of the present invention will be described in detail based on the drawings. However, the present invention is not limited to the embodiments.

[0034] based on Figures 1 to 3 One embodiment of the terminal block of the present invention will be described.

[0035] Figures 1 to 3 The reference numeral 1 indicates a terminal block of the present embodiment. The terminal block 1 is assembled to a wall 501 of a frame of an assembly object (e.g., an inverter, etc.) to electrically connect a main body inside the frame (e.g., an inverter main body, etc.) to an external electrical device (e.g., a motor, etc.). Figures 1 to 3 ). For example, the frame is formed of a metal material.

[0036] The terminal block 1 includes a housing 10 ( Figures 1 to 3 The housing 10 is formed of an insulating material such as synthetic resin.

[0037] The housing 10 includes: a fitting portion 11, which is inserted from the front end 11a into the through-hole-shaped fitting hole 501a in the wall body 501; and a flange portion 12, which is provided at the rear end 11b ( Figures 1 to 3 The fitting hole 501a is a through hole that connects one wall surface 501b side of the wall body 501 with the other wall surface 501c side ( Figure 1 ).

[0038] The outer peripheral shape of the cross section of the fitting portion 11 perpendicular to the insertion direction into the fitting hole 501a is formed to be similar to the shape of the fitting hole 501a. In addition, the fitting portion 11 is formed such that the front end 11a protrudes from one wall surface 501b of the wall body 501 at the fitting completion position relative to the fitting hole 501a ( Figures 1 to 3 On the other hand, the flange portion 12 is locked to the other wall surface 501c of the wall body 501 at the mating completion position ( Figure 3 ).

[0039] The terminal block 1 includes an electrical connection component 20, which is accommodated in the housing 10 and is responsible for electrical connection with the other party ( Figures 1 to 3 The electrical connection component 20 is formed of a conductive material such as metal. The electrical connection component 20 is accommodated in the fitting portion 11, with one end protruding from the front end 11a of the fitting portion 11 and the other end protruding from the rear end 11b of the fitting portion 11 ( Figure 1 and Figure 3 The electrical connection component 20 has one of its ends electrically connected to a main body (such as an inverter main body, etc.) inside the frame, and the other end electrically connected to an external electrical device (such as a motor, etc.).

[0040] In the terminal block 1 shown here, the housing 10 is insert-molded with respect to the electric connection component 20 provided in a mold, so that the electric connection component 20 is accommodated in the fitting portion 11 .

[0041] At the mating completion position between the mating portion 11 and the mating hole 501a, an annular gap is formed between the outer peripheral surface of the mating portion 11 and the inner peripheral surface of the mating hole 501a. The terminal block 1 is provided with an annular sealing member (so-called O-ring) 30 ( Figure 1 and Figure 3 The sealing member 30 is embedded in an annular groove formed on the outer peripheral surface of the fitting portion 11.

[0042] The terminal block 1 includes a holding member 40 ( Figures 1 to 3 The retaining member 40 is used to be embedded in the groove 11c of the front end 11a of the fitting portion 11 in the mating completion position, and is locked to a wall surface 501b of the wall body 501 in the embedded state, so as to retain the housing 10 in the mating completion position on the wall body 501 ( Figures 1 to 3 ).

[0043] The holding member 40 is formed into a plate shape, for example. Figures 1 to 3 Here, a metal flat plate formed with a metal plate as a base material is used for the holding member 40. The holding member 40 shown here has: a main body 41 formed in a rectangular flat plate shape, with an embedding portion 41a on one side being embedded in the groove portion 11c of the front end 11a of the embedding portion 11; and a protruding portion 42 formed in a rectangular flat plate shape, the protruding portion 42 protruding from both ends of the embedding portion 41a of the main body 41 in a manner located on the same plane ( Figures 1 to 3 A linear groove 11c is formed at the front end 11a of the fitting portion 11, into which the embedding portion 41a is embedded. Figure 1 ).

[0044] In the terminal block 1, the holding member 40 is locked to one wall surface 501b of the wall body 501 at the mating completion position, and the flange portion 12 of the housing 10 is locked to the other wall surface 501c of the wall body 501 at the mating completion position ( Figure 3 That is, in the terminal block 1, when the fitting portion 11 and the fitting hole 501a are in the fitting completion position, the wall body 501 is clamped by the retaining member 40 and the flange portion 12 of the housing 10, so that the housing 10 is held on the wall body 501.

[0045] The terminal block 1 shown here includes a plurality of terminal elements 50 ( Figure 1 and Figure 2Here, the structure is provided with four terminal elements 50. Each of the plurality of terminal elements 50 is inserted and engaged in an engagement hole 501a provided for each terminal element 50 arranged in a row on a wall body 501, and the front end 11a of the engagement portion 11 protrudes from the engagement hole 501a.

[0046] The holding member 40 may be a member that holds each terminal element 50 individually, or a member that holds a plurality of terminal elements 50 together. The terminal block 1 shown here includes a holding member 40 ( Figure 1 and Figure 2 The retaining member 40 is embedded in the groove 11c of the front end 11a of the fitting portion 11 of the housing 10 of each terminal element 50 at the mating completion position, and is locked to a wall surface 501b of the wall body 501 in the embedded state, thereby retaining each housing 10 at the mating completion position on the wall body 501.

[0047] In the terminal block 1 of the present embodiment, the housing 10 is assembled to the wall body 501 by inserting the engaging portion 11 into the engaging hole 501a of the wall body 501. In addition, in the terminal block 1, the housing 10 is retained on the wall body 501 by embedding the retaining member 40 in the groove 11c of the front end 11a of the engaging portion 11 extending from the engaging hole 501a. The terminal block 1 also adopts the same assembly operation method when it is provided with a plurality of terminal elements 50. In this way, the terminal block 1 of the present embodiment does not need to perform the tightening operation of the screw member as in the past, and the housing 10 can be retained on the wall body 501 only by embedding the retaining member 40, so that the assembly operation time relative to the wall body 501 can be shortened.

[0048] In addition, conventional terminal blocks require tools such as impact wrenches for tightening screw members. However, the terminal block 1 of this embodiment can be assembled to the wall body 501 by an operator manually, and the holding member 40 can be inserted manually without using tools.

[0049] In addition, in conventional terminal blocks, in addition to the threaded components, a sleeve component for inserting the external threaded portion is also provided in the housing. However, the terminal block 1 of the present embodiment does not need to use such threaded components and sleeve components, so the number of components can be reduced. Moreover, the terminal block 1 of the present embodiment does not need to place the sleeve component in the housing insert molding in the mold, so the mold can be simplified. Compared with the terminal block using the conventional threaded fastening structure, the terminal block 1 of the present embodiment can achieve cost reduction due to these advantages.

Claims

1. A terminal block, characterized in that: have: A housing having a fitting portion, the fitting portion being inserted from a front end into a fitting hole in the shape of a through hole in a wall body of an assembly object, and having the front end protruding beyond a wall surface of the wall body at a fitting completion position relative to the fitting hole; an electrical connection component, which is accommodated in the housing and is responsible for electrical connection with the other party; and a holding member that holds the housing on the wall at the mating completion position, The holding member is fitted into the groove at the front end of the fitting portion at the fitting completion position and is locked to the one wall surface of the wall body in the fitted state, thereby holding the housing at the fitting completion position to the wall body.

2. The terminal block according to claim 1, characterized in that: The terminal block includes a plurality of terminal elements formed by combining the housing and the electrical connection components one by one. The plurality of terminal elements are each inserted and fitted into the fitting holes arranged in a row on the wall body for each of the terminal elements, and the front ends are made to protrude from the fitting holes. The retaining component is embedded in the groove portion at the front end of the embedding portion of the shell of each terminal element at the embedding completion position, and is locked to the one wall surface of the wall body in this embedded state, thereby retaining each of the shells at the embedding completion position on the wall body.

3. The terminal block according to claim 1 or 2, characterized in that: The holding member is formed into a plate shape.

4. The terminal block according to claim 1 or 2, characterized in that: The housing has a flange portion, the flange portion is provided at a rear end of the fitting portion, and the flange portion is locked to the other wall surface of the wall body at the fitting completion position.

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