JP4122340B2 - Terminal block - Google Patents

Description

  The present invention relates to a terminal block that is used in electronic parts and the like and transmits signals and power.

  As shown in FIG. 1, the conventional terminal block includes a case main body 11, a terminal seat 12, a conductor 13, and screw means 14.

  The case body 11 has an opening on one side (see 112 in the figure), and screw holes 113 and contact pin insertion holes 114 are formed on both upper and lower surfaces thereof. The terminal seat 12 is fixed in the opening 112 of the case body 11, and a lead wire insertion hole 121 is formed facing the opening 112. Further, the conductor 13 is adjacent to the terminal seat 12 in the case body 11, and one end portion 131 of the conductor 13 faces the contact pin insertion hole 114 and is inserted from the contact pin insertion hole 114. The other end 132 is extended from the connecting end with the one end 131 toward the opening 112 along the upper edge of the terminal seat 12 and then bent back into a C shape so as to return. The distal end 133 obliquely protrudes into the lead wire insertion hole 121 so that the core wire 201 exposed at the head of the lead wire 200 to be inserted can be elastically held together with the lead wire insertion hole 121. Yes. The screw means 14 is inserted into the case main body 11 through the screw hole 113 and passes through the other end 132 of the conductor 13, and then the terminal seat 12 is screwed and fixed into the case main body (11). Then, when moving downward, the tip 133 of the other end portion 132 that has been moved downward and obliquely protruded into the lead wire insertion hole 121 of the conductor 13 is pressed further downward, and has already entered the lead wire insertion hole 121. The lead wire 200 inserted and gripped can be more firmly connected and contacted with the core wire 201.

  However, in such a terminal block 10, first, the other end 132 protruding into the lead wire insertion hole 121 of the conductor 13 is inclined, so that the pressing and contact of the lead wire 200 to the core wire 201 is It is limited to the vicinity of the tip 133, and it is not secure even by further pressing of the screw means 14. Further, when the other end portion 132 obliquely projecting into the lead wire insertion hole 121 of the conductor 13 is pressed for a long time by the screw means 14 from above, it is deformed and the elastic recovery force is gradually lost, resulting in poor contact. Therefore, there is a drawback that it cannot be used repeatedly for a long time. Further, there is a drawback that the tip 133 pressed by the screw means 14 protrudes from the core wire 201 of the lead wire 200 to crush the core wire 201.

  In addition, since the opening 112 is formed in the case main body 11, the member inside the case main body 11, particularly the bent portion of the other end portion 132 of the conductor 13 is always exposed outside the opening 112. Touching it unexpectedly may cause an electric shock.

  In view of the above, a first object of the present invention is to provide a terminal block that is free from deformation and elastic fatigue even when used repeatedly.

  A second object of the present invention is to provide a terminal block that can prevent electric shock.

  A third object of the present invention is to provide a terminal block that can clamp and fix a lead wire to the core wire and firmly contact the lead wire with the core wire.

In order to achieve the first to third objects, the present invention provides a case main body which is open on one side surface and has screw holes and contact pin insertion holes formed on upper and lower surfaces thereof, A terminal seat that is accommodated in the opening of the case main body so as to be movable up and down, and a lead seat is formed adjacent to the terminal seat in the case main body. A conductor having one end protruding into the lead wire insertion hole and the other end facing the contact pin insertion hole and being able to contact the contact pin inserted from the contact pin insertion hole; When inserted into the case body through the screw hole and screwed into contact with the upper portion of the terminal seat, the terminal seat is moved up and down, and the lead is formed between the lower portion of the terminal seat and the one end portion of the conductor. Line insertion A screw means that can be sandwiched and fixed a lead wire is inserted into the hole, so as to shield the conductor and the terminal seat from one side of said opening of said case body, combined and fitted to the case body And a concave groove is formed at a position facing the lead wire insertion hole of the lid body, and the one end portion of the conductor is extended after entering the lead wire insertion hole. The one end portion of the conductor is bent so as to form a loop from the connecting end with the other end portion, and is below the connecting end. Then, after passing through the inside of the lead wire insertion hole so as to be substantially parallel to the axis of the hole, the terminal block is warped upward and fitted into the concave groove .

  According to the structure of the terminal block of the present invention, the holding and fixing of the lead wire is not the deformation of the conductor but the vertical movement of the terminal seat, so that deformation and elastic fatigue do not occur even when used repeatedly. In particular, when the one end portion protruding into the lead wire insertion hole of the conductor is formed so as to be substantially parallel to the axis of the lead wire insertion hole, the lead wire is clamped and fixed to the core wire. In addition, since it is performed on the entire surface of the one end, it is possible to firmly fix the lead wire and make contact with the lead wire, and there is no possibility that the lead wire is pierced and broken as in the prior art.

  In the terminal block according to the present invention, since the opening of the case body is shielded by the lid, it is avoided that the conductor and the terminal seat are exposed from the opening of the case body. Can be prevented.

  The other end of the conductor may be composed of three metal spring pieces that are aligned along the peripheral wall surface of the contact pin insertion hole and serve as a contact seat for the contact pin. The other end portion of the conductor may be composed of two spring pieces that are provided in the hole of the contact pin insertion hole so as to face each other and serve as a contact seat for the contact pin. Thereby, the contact pin inserted from the contact pin insertion hole can be clamped and fixed.

  Hereinafter, preferred embodiments of the terminal block of the present invention will be described with reference to the drawings.

  First, a first embodiment of a terminal block according to the present invention will be described with reference to FIGS.

  As shown in FIGS. 2 and 3, the terminal block of this embodiment includes a case body 20, a terminal seat 30, a conductor 40, screw means 50, and a lid body 60.

  In the present embodiment, the case main body 20 is a substantially rectangular parallelepiped and opens on one side surface (reference numeral 24), and the inside of the case main body 20 is a plurality of accommodating spaces facing the openings 24 by a plurality of partition plates 21. 22 is partitioned. Screw holes 23 are formed on the upper surface of the case body 20 so as to communicate with the plurality of receiving spaces 22. A contact pin insertion hole 26 is formed in the lower surface of the case body 20 so as to communicate with the plurality of receiving spaces 22. Thereby, the contact pin 301 can be inserted into the accommodation space 22 from the contact pin insertion hole 26. In addition, a series of through holes 251 are formed on the upper and lower sides corresponding to the side surface of the case body 20 where the opening 24 is provided.

  The terminal seat 30 is made of metal and is housed in the housing space 22 of the case body 20 so as to be movable up and down, and a lead wire insertion hole 32 is formed facing the opening 24. A screw insertion hole 31 is formed in the upper portion of the terminal seat 30 so as to face the screw hole 23.

  The conductor 40 is made of metal and is adjacent to the terminal seat 30 in the case body 20. The conductor 40 has both end portions 41, 42, one end portion 42 of which protrudes into the lead wire insertion hole 32, and the other end portion 41 faces the contact pin insertion hole 26. The contact pin 301 to be inserted can be contacted. In the present embodiment, the other end portion 41 of the conductor 40 is composed of three metal spring pieces 411 that are arranged along the peripheral wall surface of the contact pin insertion hole 26 and serve as a bearing seat for the contact pin 300. .

  The screw means 50 is inserted into the case main body 20 from the screw hole 23 and is screwed into the screw insertion hole 31 at the upper part of the terminal seat 30. When the screw means 50 is twisted, the terminal seat 30 is moved up and down, The core wire 401 of the lead wire 400 inserted into the lead wire insertion hole 32 can be sandwiched and fixed by the one end portion 42 of the conductor 40.

  The lid 60 is fitted to the case body 20 so as to shield the conductor 40 and the terminal seat 30 from the side surface of the case body 20 where the opening 24 is provided. More specifically, a series of protrusions 61 are fitted in the through holes 251 of the case body 20 on both the upper and lower sides of the lid 60. The lid 60 is formed with a plurality of slots 63 extending in the vertical direction so as to face the opening 24 of the case body 20. A concave groove 62 is formed at a position facing the lead wire insertion hole 32 of the lid 60, and the one end portion 42 of the conductor 40 extends into the lead wire insertion hole 32 and extends to form a concave groove. It is inserted into 62 and fixed.

  More specifically, the one end portion 42 of the conductor 40 is bent so as to form a loop from the connection end with the other end portion 41 and then passes through the lead wire insertion hole 32 below the connection end. After being penetrated so as to be substantially parallel to the groove, it is warped upward and fitted into the groove 62. According to such a configuration, the elastic recovery force of the conductor 40 is always satisfactorily maintained, and the core wire 401 of the lead wire 400 inserted into the lead wire insertion hole 32 is made strong by planar and intimate contact. Can be pinched and fixed.

  As shown in FIG. 5, when the core wire 401 of the lead wire 400 is inserted into the lead wire insertion hole 32 from the slot 63, when the screw means 50 is twisted clockwise, the terminal seat 30 is moved upward, and the core wire 401 is moved. With this upward movement, it is moved upward until it comes into contact with the one end portion 42 of the conductor 40 and can be securely clamped and fixed between the one end portion 42 of the conductor 40 and the terminal seat 30.

  As described above, in the present embodiment, the holding and fixing of the lead wire 400 is performed by moving the terminal seat 30 up and down by twisting the screw means 50, so that the one end portion 42 of the conductor 30 and the terminal can be reliably connected. The core wire 401 of the lead wire 400 inserted into the lead wire insertion hole 32 can be sandwiched and fixed with the lower portion of the seat 30. Therefore, the contact between the conductor 40 and the core wire 401 of the lead wire 400 can be improved, and the lead wire 400 can be repeatedly inserted and extracted.

  And in the terminal block of this invention, since the opening 24 of the case main body 20 is shielded by the cover body 60, it avoids that the conductor 40 and the terminal seat 30 are exposed from the opening 24 of the case main body 20, and an electric shock is avoided. Can be prevented.

  In addition, since the one end portion 42 of the conductor 40 enters the lead wire insertion hole 32 and extends and is fitted and fixed in the concave groove 62, the tip of the one end portion 42 of the conductor 40 is the lead wire. It is possible to prevent the structure of the lead wire 400 from being broken by striking the 400 core wires 401.

  Next, FIG. 6 shows a second embodiment of the present invention. In this embodiment, the difference from the first embodiment is that the other end 71 of the conductor 70 is provided in the hole of the contact pin insertion hole 26 so as to face each other, and the contact pin 300. This is because it consists of two spring pieces 711 serving as bearing seats.

  The terminal block of the present invention is applied to transmission of signals and power of electronic devices.

Sectional drawing which shows the conventional terminal block. The perspective view which shows the terminal block of the 1st Embodiment of this invention. The exploded view which shows the terminal block of the 1st Embodiment of this invention. Sectional drawing which shows the state which has the terminal seat in the original position in the 1st Embodiment of this invention. Sectional drawing which shows the state which moved up the terminal seat in case the screw means in the 1st Embodiment of this invention is twisted. The exploded view which shows the terminal block of the 2nd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Terminal block, 100 ... Contact pin, 11 ... Case main body, 112 ... Opening, 113 ... Screw hole, 114 ... Contact pin insertion hole, 12 ... Terminal seat, 121 ... Lead wire insertion hole, 13 ... Conductor, 131 ... One end part, 132 ... other end part, 133 ... tip, 14 ... screw means, 200 ... lead wire, 201 ... core wire, 20 ... case main body, 21 ... partition plate, 22 ... housing space, 23 ... screw hole, 24 ... opening 251, through hole, 26 contact pin insertion hole, 30 terminal socket, 31 screw insertion hole, 32 lead wire insertion hole, 40 conductor, 41 other end, 411 metal spring piece, 42 One end part, 50 ... Screw means, 60 ... Lid, 61 ... Projection, 62 ... Groove, 63 ... Slot, 70 ... Conductor, 71 ... Other end part, 711 ... Metal spring piece.

Claims (3)

A case main body that is open on one side and has screw holes and contact pin insertion holes formed on both upper and lower surfaces thereof,
A terminal seat that is accommodated in the opening of the case body so as to be movable up and down, and a lead wire insertion hole is formed facing the opening,
In the case body, adjacent to the terminal seat, one end portion thereof protrudes into the lead wire insertion hole, and the other end portion faces the contact pin insertion hole, and the contact pin insertion hole A conductor capable of contacting a contact pin inserted from
When inserted into the case body through the screw hole and screwed into contact with the upper portion of the terminal seat, the terminal seat is moved up and down, and the lead is formed between the lower portion of the terminal seat and the one end portion of the conductor. Screw means capable of sandwiching and fixing the lead wire inserted into the wire insertion hole ;
A lid fitted to the case body so as to shield the conductor and the terminal seat from the side surface of the case body with the opening;
A concave groove is formed at a position facing the lead wire insertion hole of the lid,
The one end of the conductor extends after entering the lead wire insertion hole, and is fixed by being inserted into the groove.
The one end portion of the conductor is bent so as to form a loop from the connection end with the other end portion, and is then substantially parallel to the axis of the hole in the lead wire insertion hole below the connection end. After having penetrated like this, the terminal block characterized by having been inserted in the said concave groove | curvature upwardly .   The said other end part of the said conductor consists of three metal spring pieces which are arranged along the peripheral wall surface of this contact pin insertion hole, and become a contact seat of a contact pin. Terminal block as described in   The other end portion of the conductor is composed of two spring pieces that are provided in the hole of the contact pin insertion hole so as to face each other and serve as a contact seat for the contact pin. The terminal block according to claim 1.

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