CN213753084U

CN213753084U - Spring pull-back type wiring terminal supporting direct-plug wiring

Info

Publication number: CN213753084U
Application number: CN202022934727.0U
Authority: CN
Inventors: 张淼
Original assignee: Phoenix Contact Asia Pacific Nanjing Co Ltd
Current assignee: Phoenix Contact Asia Pacific Nanjing Co Ltd
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-07-20
Anticipated expiration: 2030-12-09
Also published as: DE112021006364T5; WO2022121924A1

Abstract

The utility model relates to a support spring pull-back formula binding post of cut straightly wiring, this kind of binding post includes: a housing defining an inner space of the terminal, and defining a wiring passage and an operation passage communicating with the inner space; the cage type spring clamp is positioned in the shell and comprises a supporting arm and a clamping arm, wherein a clamping opening is formed in the clamping arm, and the tail end of the supporting arm penetrates through the clamping opening; a sliding block and a compression spring located in the housing, the sliding block being capable of being positioned in a reset position by actuation of the compression spring, a portion of the sliding block being capable of entering the nip of the clamping arm when the sliding block is in the reset position, thereby placing the cage spring clamp in a locked state in which it is blocked from being pulled back by the sliding block, the sliding block exiting the nip of the clamping arm when the sliding block is pushed away from the reset position, thereby releasing the locked state of the cage spring clamp.

Description

Spring pull-back type wiring terminal supporting direct-plug wiring

Technical Field

The utility model relates to a binding post, especially a spring pullback binding post with novel constitutional mode supports the operation of cut straightly wiring, and it belongs to the electricity and connects technical field.

Background

Terminals are common electrical connection devices that can be used to make an electrical connection between two electrical devices (e.g., a control device and an action device, a signal output device and a signal input device), or for signal relaying, etc. The wiring terminal in the prior art can be divided into a direct insertion type, a spring pull-back type, a screw fastening type and the like according to a wire clamping mode.

An in-line terminal has been used in the prior art and includes a terminal housing, a wire clamping spring structure mounted within the terminal housing, and a retention mechanism mounted within the terminal housing. When no wire is accessed, the tip of the pivotable clamp arm of the wire clamp spring structure is in contact with the holding mechanism, and the tip of the clamp arm is restricted by interference of the lock portion of the holding mechanism, so that the clamp arm is in the locked state. After the wire is inserted, the wire pushes the retaining mechanism to make the retaining mechanism generate mechanical deformation, and the locking part of the retaining mechanism no longer prevents the movement of the tail end of the clamping arm of the wire clamping spring structure, so that the clamping arm can pivot under the action of self elastic restoring force to contact with the inserted wire and apply clamping force to the inserted wire, and wire connection is realized.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a support spring pull-back formula binding post of cut straightly wiring.

According to the utility model discloses a binding post, include: a housing defining an inner space of the terminal, and defining a wiring passage and an operation passage communicating with the inner space; the cage type spring clamp is positioned in the shell and comprises a supporting arm and a clamping arm, wherein a clamping opening is formed in the clamping arm, and the tail end of the supporting arm penetrates through the clamping opening; a sliding block and a compression spring located in the housing, the sliding block being capable of being positioned in a reset position by actuation of the compression spring, a portion of the sliding block being capable of entering the nip of the clamping arm when the sliding block is in the reset position, thereby placing the cage spring clamp in a locked state in which it is blocked from being pulled back by the sliding block, the sliding block exiting the nip of the clamping arm when the sliding block is pushed away from the reset position, thereby releasing the locked state of the cage spring clamp.

In the above terminal, optionally, the sliding block can be pushed by the wire inserted into the wiring passage and entering the clamping opening to leave the reset position, thereby releasing the locking state of the cage spring clamp and bringing the cage spring clamp into a clamping state in which the cage spring clamp clamps the wire in the clamping opening with an elastic pulling-back force.

In the above terminal, optionally, the sliding block includes a vertical baffle, and when the sliding block is located at the reset position, a part of the vertical baffle of the sliding block can enter the clamping opening of the clamping arm, so that the cage spring clamp is in a locking state that cannot be pulled back.

In the above terminal, optionally, the sliding block further includes a horizontal baffle plate, the horizontal baffle plate extends from one side of the vertical baffle plate, and when a wire enters the wiring channel and enters the clamping opening of the clamping arm, the wire contacts and pushes the horizontal baffle plate downward.

In the above terminal, optionally, the sliding block further includes a pair of side baffles located on two sides of the vertical baffle, a transverse width of the vertical baffle is smaller than or equal to a width of the clamping opening of the clamping arm, and a thickness of the transverse width of the vertical baffle plus the pair of side baffles is greater than the width of the clamping opening of the clamping arm, so that the side baffles limit an extent to which the vertical baffle can enter the clamping opening.

Optionally, the terminal further includes a current bar for being mounted and positioned in the housing, the support arm of the cage spring clip abuts against the current bar, and the clamping opening of the cage spring clip is sleeved on the current bar.

In the above terminal, optionally, the current bar includes a horizontal current guiding portion and a vertical current guiding portion, the support arm of the cage-type spring clip abuts against the vertical current guiding portion, and the clip opening of the cage-type spring clip is sleeved on the vertical current guiding portion.

In the above terminal, optionally, a shoulder is provided at a terminal of the vertical current guiding portion of the current bar, and the shoulder is used for forming a shape fit with a width of a clamping opening of the cage type spring clamp.

In the above terminal, optionally, a pair of guiding wings is disposed on the vertical flow guiding portion of the current bar, and the pair of guiding wings and the pair of guiding posts on the sliding block form a shape fit, so as to limit the moving stroke of the sliding block.

Optionally, the terminal further includes a guide structure disposed on the housing or on the current bar disposed in the housing, and the guide structure and the sliding block form a shape fit, so as to limit a moving stroke of the sliding block.

In the above terminal, optionally, the cage spring clip is mounted on the spring clip positioning portion of the housing, and an auxiliary spring clip is mounted between the spring clip positioning portion and the cage spring clip to enhance the pull-back force of the cage spring clip.

In the above terminal, optionally, the operating tool entering the inside of the housing through the operating channel can push the cage spring clip to elastically deform, so as to release the locking state or the wire clamping state.

The utility model has the advantages that: in many cases, the spring-pull type wiring terminal is considered to have the advantages of smaller appearance and better vibration resistance compared with other types of terminals. The utility model discloses an on expanding the convenience of cut straightly wiring to spring pull-back formula binding post, make this type terminal further have the convenient characteristics of operation, therefore the field that can use is wider.

Drawings

Fig. 1 is an exploded view of a terminal according to an embodiment of the present invention.

Fig. 2A is a cross-sectional view of a wire terminal according to an embodiment of the present application in a non-linear state.

Fig. 2B is a cross-sectional view of a wire connecting terminal according to an embodiment of the present application in a wire connecting state

Fig. 3A-3B are different perspective views of a current bar and a slider in a wire connection terminal according to an embodiment of the present application in a combined state.

Fig. 3C-3D are different perspective views of a current bar and a slider in a wire connection terminal according to an embodiment of the application in an exploded state.

Some of the reference numbers:

100 connecting terminals; 110 a housing; 112 spring clip locating portions; 115 a wiring channel; 116 operating the channel; a 120 cage spring clamp; 121 a support arm; 122 clamping the wall; 125 a nip; 130 current bars; 131 a transverse flow guide part; 132 arc-shaped transition section; 133 vertical flow guide parts; 134 guide wings; 140 a slider; 143 side dams; 145 transverse baffle plates; 146 vertical baffles; 148 guide posts; a compression spring 150; an auxiliary spring clip 160; 170 a lead; 171 conductive wire terminal

Detailed Description

In the following description, the present application is described with reference to various embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details, or with other alternative and/or additional methods, materials, or components. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of various embodiments of the application. Similarly, for purposes of explanation, specific numbers, materials, and configurations are set forth in order to provide a thorough understanding of the embodiments of the application. However, the present application may be practiced without the specific details. Further, it should be understood that the embodiments shown in the figures are illustrative representations and are not necessarily drawn to scale.

The present application is further described below with reference to the accompanying drawings.

Fig. 1 is an exploded view of a wire terminal 100 according to an embodiment of the present application. Fig. 2A is a cross-sectional view of the wire connecting terminal 100 according to an embodiment of the present application in a non-linear state. Fig. 2B is a cross-sectional view of the connection terminal 100 according to an embodiment of the present application in a connected state.

Referring to fig. 1, 2A and 2B, a connection terminal 100 according to an embodiment of the present application includes a housing 110, a cage spring clip 120, a current bar 130, a sliding block 140, a compression spring 150, and an auxiliary spring clip 160. The housing 110 includes a wiring passage 115 and an operation passage 116. The end of the wire 170 shown in fig. 1 is stripped to expose the wire end 171. Wires 170 may be routed through wiring channels 115 into housing 110 such that wire ends 171 are clamped by cage spring clips 120 for wiring.

In particular, the caged spring clip 120 may be made of sheet metal and include a support arm 121 and a clamping arm 122, the support arm 121 and the clamping arm 122 being connected by a U-shaped transition section. A clamping opening 125 is provided in the clamping arm 122. The nip 125 is in the form of an opening in the clamping arm having a width for insertion of the end portion of the support arm 121 (the end of the support arm 121 may have a width that varies to form a shoulder structure to limit the extent of the support arm 121 entering the nip 125).

Cage spring clips 120 may be mounted within housing 110 on spring clip positioning portions 112, as shown in fig. 2A, so as to be substantially positioned. The support arms 121 of the caged spring clip 120 may rest on any suitable structure, for example, as shown in figure 1, on the current bar 130. The cage spring clamp 120 in the installed state corresponds to a closed loop formed by spring plates, the mechanical elasticity of which causes it to generate an elastic restoring force that expands the closed loop. This resilient return force causes movement of the clamp arm 122 when the support arm 121 of the cage spring clip 120 is positioned, which movement of the clamp arm 122 is referred to herein as "pullback". This retraction based on elastic restoring forces allows the clamp arm 122 to apply a clamping force to a structure within the clamp mouth 125.

In an embodiment, optionally, an auxiliary spring clip 160 is installed between the spring clip positioning portion 112 and the cage spring clip 120 to further enhance the resilient pullback force of the cage spring clip 120.

While the embodiments of the present application present specific structures for cage spring clips 120, it should be understood that there are numerous specific configurations of cage spring clips in the art. For example, whether it is a cage spring clip as described in DE10304493A1, or PHOENIX

The cage spring clips employed in the ST series type terminals of the brand may be employed in embodiments of the present application.

The terminal of the embodiments of the present application employs a cage spring clip as a wiring means, in which sense the terminal may be referred to as a spring-return type terminal. The present application further enables in-line wiring based on the construction of the spring-return type wire connection terminal, which will be further described in connection with fig. 3A-3D.

Fig. 3A-3B are different perspective views of a current bar 130 and a sliding block 140 in a wire connection terminal according to an embodiment of the present application in a combined state. Fig. 3C-3D are different perspective views of a current bar and a slider in a wire connection terminal according to an embodiment of the application in an exploded state. Referring to fig. 1, 2A-2B, and 3A-3D, the terminal 100 includes a sliding block 140 and a compression spring 150 for urging the sliding block 140. The travel of the sliding block 140 can be limited by providing suitable guiding structures in the housing and by providing a form fit between the sliding block 140 and the guiding structures. The sliding block 140 can move to the upper end of its travel under the drive of the compression spring 150, which position can be referred to as the reset position of the sliding block 140. As shown in fig. 2A, when the sliding block 140 is in the reset position, a portion of the sliding block 140 can enter the clip opening 125 of the clamping arm 122, thereby placing the cage spring clip 120 in a "locked state" in which it is blocked from being pulled back by the sliding block 140. As shown in fig. 2B, when the slide block is pushed away from the reset position by the urging of the wire 170, the slide block 140 exits the grip opening 125 of the grip arm 122, thereby releasing the locked state of the cage spring grip 120. At this point, cage spring clamp 120 enters a "clamped state". In the clamped state shown in fig. 2B, the cage spring clamp 120 clamps the wire 170 within the clamping jaw 125 with a resilient pull-back force.

Although not shown, it should be understood that an operating tool may enter the interior of the housing 110 through the operating passage 116 and urge the cage spring fingers 120 to elastically deform, thereby releasing the locked state or the wire-clamping state. At this time, the sliding block 140 may return to the reset position by the urging force of the compression spring 150.

In further embodiments, the current bar 130 and the slider block 140 may have some or all of the features of the configurations described in FIGS. 3A-3D.

The current bar 130 may include lateral flow guides 131 and vertical flow guides 133, and an arcuate transition 132 therebetween. The support arms 121 of the caged spring clip 120 can rest on the vertical flow guides 133 and the clip mouth 125 of the caged spring clip 120 is sleeved over the vertical flow guides 133. The current bar thus acts as a fulcrum for the elastic restoring force of the cage spring clip 120. At the ends of the vertical conductors 133 of the current bar 130, shoulders 135 are provided for a form fit with the width of the clamping opening 125 of the cage spring clamp 120, so that only the end portions of the vertical conductors 133 of the current bar 130 enter the clamping opening 125 of the cage spring clamp 120. In a further embodiment, a pair of guiding wings 134 is provided on the vertical guiding portion 133 of the current bar 130, and the guiding wings 134 may form a shape fit with a pair of guiding posts 148 on the sliding block 140, so that the sliding block 140 moves.

The slider 140 may include a vertical stop 146, a lateral stop 145. When the slide block 140 is in the reset position, a portion of the vertical stop 146 of the slide block 140 (i.e., the upper end portion in fig. 3D) can enter the grip opening 125 of the grip arm 122, thereby placing the cage spring clip 120 in a non-retractable, locked state. A cross stop 145 extends from one side of the vertical stop 143, and when the wire 170 enters the wiring channel 115 and enters the grip opening 125 of the gripping arm 122, the wire 170 contacts and pushes the cross stop 145 downward, and the cross stop 145 moves downward against the force of the compression spring 150.

As further shown in fig. 3D, a pair of side baffles 143 are positioned on either side of vertical baffle 146 and lateral baffle 145. The vertical baffle 146 has a lateral width smaller than or equal to the width of the clamping opening 125 of the clamping arm 120, and the lateral width of the vertical baffle 146 plus the thickness of the pair of side baffles 143 is larger than the width of the clamping opening 125 of the clamping arm 120. Thus, the side guards 143 define the extent to which the vertical guards 146 can enter the nip 125.

While the specific construction of the sliding block 140 and the cooperating guide structure on the current bar 130 are described in conjunction with fig. 3A-3D, it should be understood that this is only one specific implementation of the invention proposed in this application. Other configurations of the slider are possible, as are other configurations of the guide structure within the housing. For example, a rail or channel based slide may be employed, which may be disposed in a channel formed by a plurality of wall structures.

Having thus described the basic concept, it will be apparent to those skilled in the art that the foregoing disclosure is by way of example only, and is not intended to limit the present application. Various modifications, improvements and adaptations to the present application may occur to those skilled in the art, although not explicitly described herein. Such modifications, improvements and adaptations are proposed in the present application and thus fall within the spirit and scope of the embodiments of the present application.

Claims

1. A wire terminal, comprising:

a housing defining an inner space of the terminal, and defining a wiring passage and an operation passage communicating with the inner space;

the cage type spring clamp is positioned in the shell and comprises a supporting arm and a clamping arm, wherein a clamping opening is formed in the clamping arm, and the tail end of the supporting arm penetrates through the clamping opening;

a sliding block and a compression spring positioned in the housing, the sliding block being positionable in a reset position by actuation of the compression spring,

when the sliding block is located at the reset position, a part of the sliding block can enter the clamping opening of the clamping arm, so that the cage spring clamp is in a locking state blocked by the sliding block and cannot be pulled back,

when the slide block is pushed away from the reset position, the slide block exits the clamp opening of the clamping arm, thereby releasing the locked state of the cage spring clamp.

2. The wire connecting terminal of claim 1, wherein said slider is capable of being pushed out of said reset position by a wire inserted into said wire passage and into said jaw to unlock said cage spring clamp and thereby bring said cage spring clamp into a clamped state in which said cage spring clamp clamps the wire within said jaw with a resilient pull back force.

3. A terminal as claimed in claim 1 or claim 2, wherein the slider includes an upright stop, a portion of the upright stop of the slider being able to enter the grip opening of the clamping arm when the slider is in the reset position, thereby placing the caged spring clip in a non-retractable locked condition.

4. The wire connecting terminal of claim 3, wherein the slider further comprises a transverse stop extending from one side of the vertical stop, the wire contacting and pushing the transverse stop downward as the wire enters the wire passage and enters the grip of the clamping arm.

5. The terminal of claim 3, wherein the slider further comprises a pair of side dams on either side of the vertical dam, the vertical dam having a transverse width less than or equal to the width of the nip of the clamping arms, the transverse width of the vertical dam plus the thickness of the pair of side dams being greater than the width of the nip of the clamping arms, such that the side dams define the extent to which the vertical dam can enter the nip.

6. A terminal as claimed in claim 1 or claim 2, further comprising a current bar for mounting in position within the housing, the support arms of the cage spring clip abutting against the current bar, the grip of the cage spring clip fitting over the current bar.

7. The terminal according to claim 6, wherein the current bar comprises a transverse current guiding portion and a vertical current guiding portion, the support arm of the cage spring clip abutting against the vertical current guiding portion, and the grip of the cage spring clip fitting over the vertical current guiding portion.

8. A terminal according to claim 7, wherein the ends of the vertical current guides of the current bar are provided with shoulders for form-fitting engagement with the width of the pinch of the cage spring clamp.

9. The connecting terminal as claimed in claim 7, wherein the vertical flow guide portion of the current bar is provided with a pair of guiding wings which form a positive fit with a pair of guiding posts on the sliding block, thereby defining the moving stroke of the sliding block.

10. The terminal according to claim 1, further comprising a guide structure provided on the housing or on the current bar within the housing, the guide structure and the sliding block being configured to form fit to define the travel of the sliding block.

11. A terminal as claimed in claim 1 or claim 2, wherein the cage spring fingers are mounted on spring finger locating portions of the housing and auxiliary spring fingers are mounted between the spring finger locating portions and the cage spring fingers to enhance the return tension of the cage spring fingers.

12. A terminal as claimed in claim 2, wherein an operating tool entering the interior of the housing through the operating passage is capable of urging the cage spring fingers to resiliently deform to release the locked or clamped condition.