CN113972506A

CN113972506A - Binding post with operation sound feedback

Info

Publication number: CN113972506A
Application number: CN202010725447.0A
Authority: CN
Inventors: 王峰
Original assignee: Phoenix Contact Asia Pacific Nanjing Co Ltd
Current assignee: Phoenix Contact Asia Pacific Nanjing Co Ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2022-01-25
Anticipated expiration: 2040-07-24
Also published as: CN113972506B; DE112021003942T5; WO2022017496A1

Abstract

The invention discloses a wiring terminal with operation sound feedback. A connection terminal according to the present invention includes: a housing defining an inner space of the terminal, and defining a wiring passage and an operation passage communicating with the inner space; a wire clamp spring structure disposed in the interior space of the housing, the wire clamp spring structure including a retention structure and a clamp arm connected by a bend, the retention structure for positioning the wire clamp spring structure within the housing, the clamp arm being pivotable in the interior space of the housing; and the operating piece is placed in the operating channel of the shell and can move up and down in the operating channel through the actuation of the operating tool, wherein the wiring terminal further comprises an acoustic feedback device, and the acoustic feedback device can trigger the reset action through the position change of the operating piece and can generate sound in the reset action.

Description

Binding post with operation sound feedback

Technical Field

The invention relates to a wiring terminal, in particular to a wiring terminal with an operation sound feedback function, and belongs to the technical field of electric connection.

Background

A terminal is a common electrical connection device 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.

In one proposed front-face terminal solution, a terminal hole and an operation hole are provided in a front face of a terminal housing, and a spring mechanism is provided in the terminal housing, one end of the spring mechanism being fixed and the other end being a pivotable free end. When an operating tool (e.g., a screwdriver) is inserted into the operating hole, the operating tool is rotated to drive the screw in the operating hole up and down. When the screw moves downwards, the spring is further pressed, the free end is pivoted away from the lead, and therefore space for leading in is provided. After the wire is connected from the wiring hole, the screwdriver rotates reversely to enable the screw to withdraw, at the moment, the screw relieves the compression on the spring, and the spring is pressed on the connected wire by the elasticity of the spring.

In the above-described terminal solutions, there is no clear indication as to whether the screw-removing operation of the operating tool is in place (i.e., whether the spring has sufficiently released the elastic restoring force to press the wire).

Disclosure of Invention

The invention aims to improve the prior art and provides a novel wiring terminal with operation sound feedback to help a user accurately and timely judge whether the operation based on a tool is in place.

A connection terminal according to the present invention includes: a housing defining an inner space of the terminal, and defining a wiring passage and an operation passage communicating with the inner space; a wire clamp spring structure disposed in the interior space of the housing, the wire clamp spring structure including a retention structure and a clamp arm connected by a bend, the retention structure for positioning the wire clamp spring structure within the housing, the clamp arm being pivotable in the interior space of the housing; and the operating part is placed in the operating channel of the shell and can move in the operating channel in a movable mode, and the operating part can move up and down in the operating channel through the actuation of the operating tool.

In the terminal, the operating member may include a screw and a head, and the operating tool may perform a wire feeding rotation operation on the head.

The connecting terminal can further comprise a nut piece placed in the operating channel of the shell.

In the above terminal, optionally, when the operating member moves to the lower stroke position along the operating channel, the lower end of the operating member abuts against the clamping arm of the wire clamping spring structure, so that the clamping arm is in the first position for free wire feeding, and when the operating member moves to the upper position of the operating channel, the clamping arm can pivot from the first position to the second position for wire clamping without being blocked by the operating member.

In the above terminal, the acoustic feedback means may be configured to accumulate energy in response to a change in the position of the operating member at an initial or intermediate stage of the operating stroke and release the energy to emit a sound at an end stage of the operating stroke.

In the above terminal, the operating member may be a screw, and the change in the position of the operating member is at least one of: position changes in the screwing operation; and position changes in screw-withdrawing operations.

In the above terminal, the sound feedback device may include: a blind hole formed in a wall of the operation channel; the pressure spring is arranged in the blind hole; and a spherical stopper attached to an end of the pressure spring that opens toward the blind hole.

In the terminal, the head of the operating element may have a concave ring structure, and when the concave ring structure faces the blind hole, the concave ring structure of the operating element may partially accommodate the spherical stopper and push the spherical stopper into the circular inlet of the opening at least partially.

In the above terminal, the reset operation triggered by a change in the position of the operating element may include: when the head of the operating piece moves from a position not in contact with the blind hole to a position corresponding to the blind hole, the head of the operating piece pushes the spherical blocking piece into the circular inlet of the opening; when the head of the operating piece moves further to enable the concave ring structure to face the blind hole, the spherical stopper is pushed out of the opening hole by the elastic force of the pressure spring in the blind hole and enters the concave ring structure, and therefore feedback sound is generated.

In the above terminal, the sound feedback device may include: the flexible structure is arranged in the shell, one end of the flexible structure is fixed on the shell, the other end of the flexible structure is a free end, and the free end at least partially enters the operation channel through an opening formed in the wall of the operation channel when not subjected to external force.

In the above terminal, the reset operation triggered by a change in the position of the operating element may include: deformation of the flexible structure by squeezing when the head of the actuator moves from a position away from contact with the flexible raised structure to a position contacting the free end of the flexible raised structure; when the head of the operating member is further moved to release the pressing of the free end of the flexible structure, the flexible structure is reset and generates a feedback sound.

In the terminal, the flexible structure may be a flexible frame or a flexible board.

In the above terminal, the sound feedback device may include: a rotary vane pivotable about a rotary axis, a first end of the rotary vane being pivotable into the operating channel through an opening formed in a wall of the operating channel, a second end of the rotary vane being pivotable between a first pivot position in which the rotary vane is substantially perpendicular to the operating channel and when the first end of the rotary vane partially enters the operating channel and a second pivot position in which the rotary vane is inclined to the operating channel and when the first end of the rotary vane exits the operating channel, constrained by the structure of the housing; and a return spring disposed within the housing, the return spring applying a restoring force to the first end of the rotary vane to pivot the rotary vane to a first pivot position.

In the above-described connection terminal, the reset operation triggered by a change in the position of the operating element includes: when the head of the operating element moves from a position far away from the rotary vane to a position contacting with the first end of the rotary vane, the head of the operating element pushes the rotary vane to pivot so that the first end of the rotary vane leaves the operating channel, after the pivoting of the rotary vane is limited by the shell, the rotary vane is placed at a second pivoting position, and the second end of the rotary vane pivots and presses a return spring; when the head of the operating element further moves to be no longer in contact with the first end of the rotary vane, the rotary vane returns to the first pivoting position under the restoring force of the return spring, and the second end of the rotary vane collides with the limiting structure of the shell to generate feedback sound.

In the terminal, the operating member may include a screw or a bolt.

In the above terminal, the wire clamping spring structure may be a cage-type pullback spring, and the holding structure is a clamping arm having an opening.

In the above terminal, the wire clamping spring structure may be a U-shaped spring plate, and the holding structure is a holding arm.

At least some of the implementation modes of the invention have the following beneficial effects: the operation sound feedback can make the user using the operation tool more clearly recognize whether the stroke end of a certain operation (for example, a screw-off operation) is reached.

Drawings

Fig. 1 is an exploded view of a wire terminal with operational audible feedback according to a first embodiment of the present invention.

Fig. 2 is a side view of a wire connecting terminal with operating audible feedback according to a first embodiment of the present invention in a wire clamping state.

Fig. 3A-3C are cross-sectional views of a wire connecting terminal with operational audible feedback according to a first embodiment of the present invention at initial, intermediate and completion stages of operation.

Fig. 4 is an exploded view of a wire terminal with operational audible feedback according to a second embodiment of the present invention.

Fig. 5 is a side view of a wire connecting terminal with operating audible feedback according to a second embodiment of the present invention in a wire clamping state.

Fig. 6A-6C are cross-sectional views of a wire connecting terminal with operational audible feedback according to a second embodiment of the present invention at initial, intermediate and finishing stages of operation.

Fig. 7 is an exploded view of a wire terminal with operational audible feedback according to a third embodiment of the present invention.

Fig. 8 is a side view of a wire connecting terminal with operating audible feedback according to a third embodiment of the present invention in a wire clamping state.

Fig. 9A-9C are cross-sectional views of a wire connecting terminal with operational audible feedback according to a second embodiment of the present invention at initial, intermediate and completion stages of operation.

Some of the reference numbers:

110, 210, 310: shell body

111, 211, 311: spring holding part

120, 220, 320: wire clamping spring

124, 224, 324: snap tab

130, 230, 330: flow guiding structure

131, 231, 331: card interface

140, 240, 340: conducting wire

141, 241, 341: wire end

150, 250, 350: screw nail

151, 251, 351: screw head

152, 252, 352: screw rod

153: concave ring structure

161: pressure spring

162: spherical stop block

170, 270, 370: nut piece

180, 280, 380: wiring channel

185, 285, 385: operation channel

190, 290, 390: operating tool

260: flexible frame

261: fixed end

262: free end

360: rotary vane

361: first end

362: second end

365: rotary vane shaft

366: pressure spring

Detailed Description

In the following description, the invention 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 embodiments of the invention. 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 invention. However, the invention may be practiced without 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 invention will be further described with reference to the accompanying drawings.

First embodiment

Fig. 1 is an exploded view of a connection terminal 100 with operational audible feedback according to a first embodiment of the present invention. Fig. 2 is a side view of a wire connecting terminal with operating audible feedback according to a first embodiment of the present invention in a clamped state. Fig. 3A-3C are cross-sectional views of a wire connecting terminal with operational audible feedback according to a first embodiment of the present invention at initial, intermediate and completion stages of operation.

As shown in fig. 1, 2 and 3A-3C, the wire connecting terminal 100 includes a housing 110, a wire clamping spring 120 and a current-directing structure 130 disposed within the housing. Also formed within the housing 110 is a spring retention portion 111, which is generally integrally formed with the housing 110. A trapping spring structure, such as a trapping spring 120, is used to be installed in the housing 110 via the spring holding portion 111. Specifically, the wire clamping spring 120 includes a curved portion 123, one end of the curved portion 123 is connected to the clamping arm 121, and the other end is connected to the retaining structure 122. The retaining structure 122 is divided into two sections, a first section forming a U-shaped structure with the clamping arm 121, and a second section being bent at approximately right angles to the first section and forming a window in the second section. Into which the clamping arm 121 projects. The second section may also be referred to as a snap arm. Snap tabs 124 are also formed at the end of the first section of the retaining structure 122 where the bend occurs.

The flow directing structure 130 is a component made of metal or other conductive material. In the assembled state shown in fig. 2, the baffle 130 is placed in the bottom space of the housing 110, and the bayonet of the baffle 130 and the snap tab 124 on the retaining structure 122 of the wire clamp spring 120 are engaged together by snapping.

The housing 110 further includes a wiring passage 180 for ingress and egress of the wire 140, and an operation passage 185 for receipt of the screw 150 and for ingress and egress of a screw operating tool 190 (e.g., a bit of a screwdriver). Specifically, the nut member 170 is disposed at a lower portion of the operation passage 185, and the internal thread of the nut member 170 is mated with the external thread of the screw shaft 152 of the screw 150. Therefore, when the screw head 151 of the screw 150 is rotated by the operating tool, the screw 150 can convert the rotating operation into the up-and-down moving operation in the operation passage 185. The operating channel is divided into two sections, the diameter of the upper section channel corresponding to the diameter of the screw head 151 and the diameter of the lower section channel corresponding to the diameter of the screw 152. In the upper passage, an annular stop 186 is provided, which at this location is reduced in diameter, preventing the screw head 151 from passing through this region, so that the annular stop 186 limits the upper limit of travel of the screw 150. Additionally, when screw head 151 descends to upper channel end 187, it cannot continue to descend, and thus upper channel end 187 defines a lower limit of travel for screw 150.

When the screw 150 reaches the lower limit of travel along the operating channel 185, the lower portion of the threaded rod 152 presses against the clamping arm 121, causing the clamping arm 121 to pivot about the connection 123 (clockwise in fig. 2 and 3A), such that the tip of the clamping arm 121 no longer blocks the tip of the wire 140 (i.e., the wire end 141) from reaching the bottom space of the housing 110 and making sufficient contact with the baffle structure 130. In this state, the operator can sufficiently insert the wire 140 into the wiring passage 180. With the wire 140 in place, the screw 150 is rotated in the opposite direction by the operating tool, which gradually raises the position of the screw 150 and releases the compression on the clamp arm 121. After the pressing from the screw 150 is released, the clamping arm 121 generates a return movement by its own elastic force and abuts against the wire end 141 of the wire 140, thereby clamping and positioning the wire 140. At this point, the wiring operation is complete.

According to the first embodiment of the present invention, an acoustic feedback device capable of triggering the reset operation by a change in the position of the screw 150 and emitting an acoustic sound during the reset operation is added to the operation path 185. Therefore, in the screw withdrawing stage of the wiring operation, whether the operation stroke of withdrawing the screw is finished or not can be accurately judged.

The acoustic feedback device in the first embodiment is embodied as a compression spring 161, a spherical stopper 162, a blind hole 163 in the housing 110, a compression spring post 164 in the blind hole 163. The compression spring 161 is located in the blind hole 163, one end of the compression spring 161 is sleeved on the compression spring column 164, and the other end is connected with the spherical stopper 162 and applies pressure to the spherical stopper. In the clamped state shown in fig. 2 and 3C, or in the untethered idle state, the screw head 151 of the screw 150 may be at the upper limit of travel limited by the annular stop 186, where the female ring structure 153 of the screw head 151 partially presses the spherical stop 162 into the blind hole 163.

The acoustic feedback arrangement of the first embodiment is arranged to provide acoustic feedback during a screw withdrawal operation that urges the screw 150 out (i.e. upwardly along the operating channel) to indicate that the withdrawal movement of the screw 150 is in place. Fig. 3A shows a cross-sectional view at an initial stage of operation. Fig. 3B shows a cross-sectional view at an intermediate stage of the operation, and fig. 3C shows a cross-sectional view at a stage of completion of the operation. At the initial stage of operation shown in fig. 3A, the screw 150 is located at the lowermost position of the operation channel, and therefore the shank 152 of the screw 150 presses the clamping arm 121 of the spring. Rotation of the tool 190 raises the screw 150 to the position shown in fig. 3B, and the screw head 151 begins to press the spherical stopper 162 and push the spherical stopper 162 into the blind hole 163, thereby accumulating elastic potential energy in the compression spring 161. Finally, the rotation of tool 190 causes screw 150 to rise further to the position shown in fig. 3C, in which the recessed ring structure of screw head 151 faces the entrance of blind hole 163, so that ball-shaped stopper 162 enters the annular recess of screw head 151 from blind hole 163 under the thrust of compression spring 161 and collides to generate sound. Thus, the terminal provides an audible feedback to the user that the screw 150 has been screwed to the end of the screw-back stroke.

Second embodiment

Fig. 4 is an exploded view of a connection terminal 100 with operational acoustic feedback according to a second embodiment of the present invention. Fig. 5 is a side view of a wire connecting terminal with operating audible feedback according to a first embodiment of the present invention in a clamped state. Fig. 6A-6C are cross-sectional views of a wire connecting terminal with operational audible feedback according to a second embodiment of the present invention at initial, intermediate and completion stages of operation.

In fig. 4, 5, 6A-6C, the configurations of the wire-clamping spring 220, the flow-guiding structure 230, the wire 240, and the nut 270 are substantially the same as in the first embodiment, and thus will not be repeated.

In the second embodiment, the housing 210 is identical to the housing 110 of the first embodiment in terms of its partial configuration, with the difference that another acoustic feedback device is provided in the operating channel 285 of the second embodiment, which is capable of triggering a resetting action by a change in the position of the screw 250 and emitting a sound during the resetting action.

More specifically, the acoustic feedback device in the second embodiment is embodied as a specific flexible frame 260. As shown in fig. 5 and 6A-6C, the flexible frame 260 includes a fixed end 261 connected to the outer frame of the housing 210 and a free end 262 that is not in contact with the outer shell of the housing 210 and is flexible. The free end 262 may partially extend into the working channel 285 through an opening in the wall of the working channel 285 in its natural uncompressed state. In the state shown in fig. 6B, the head 251 of the screw 250 and the free end 262 of the flexible frame 260 are pressed and the flexible frame 260 is deformed.

The acoustic feedback arrangement of the second embodiment is arranged to provide acoustic feedback during a screw withdrawal operation that urges the screw 250 out (i.e. upwardly along the operating channel) to indicate that the withdrawal movement of the screw 250 is in place. Fig. 6A shows a cross-sectional view at an initial stage of operation. Fig. 6B shows a cross-sectional view at an intermediate stage of operation. Fig. 6C shows a cross-sectional view at the completion stage of the operation.

At the initial stage of the operation shown in fig. 6A, the screw 250 is located at the lowermost end position of the operation passage, and thus the screw shaft 252 of the screw 250 presses the clamping arm 221 of the spring. Rotation of the tool 290 causes the screw 250 to rise to the state shown in fig. 6B, and therefore, the screw head 251 starts to press and deform the flexible frame 260, and energy due to the deformation is accumulated. Finally, the rotation of the tool 290 further raises the screw 250 to the state shown in fig. 6C, at which point the screw head 251 no longer presses the flexible frame 260, the deformation of the flexible frame 260 recovers, and a noise is generated by the collision during the recovery process. Thus, the terminal prompts the user in the form of audible feedback that the screw 250 has been screwed to the end of the screw-back operation stroke.

The flexible frame 260 may also be formed as a flexible sheet, or any other flexible structure.

Third embodiment

Fig. 7 is an exploded view of a connection terminal 300 with operational audible feedback according to a third embodiment of the present invention. Fig. 8 is a side view of a wire connecting terminal with operating audible feedback according to a first embodiment of the present invention in a wire clamping state. Fig. 9A-9C are cross-sectional views of a wire connecting terminal with operational audible feedback according to a second embodiment of the present invention at initial, intermediate and completion stages of operation.

In fig. 7, 8, and 9A-9C, the configurations of the wire clamping spring 320, the flow guide structure 330, the wire 340, and the nut 370 are substantially the same as those of the first embodiment, and thus will not be repeated.

In the third embodiment, the housing 310 is identical to the housing 110 of the first embodiment in terms of its partial configuration, but one difference is that another acoustic feedback device is provided in the operating channel 385 of the third embodiment, which is capable of triggering a resetting action by a change in the position of the screw 350 and emitting a sound during the resetting action.

More specifically, the acoustic feedback device in the third embodiment is embodied by a specific rotary vane 360 and a compression spring 366, and a rotary vane shaft 365 and a blind hole 368 in the housing 310 and the like are correspondingly configured. As shown in fig. 8 and 9A-9C, the vane 360 is mounted on a vane shaft 365 near the operation channel 385, and thus can pivot. The vane 360 includes a first end 361 and a second end 362. Wherein the first end 361 of the swivel vane 360 is pivotable into the operating channel 385 and the second end 362 of the swivel vane 360 is pivotable between a first pivot position and a second pivot position constrained by the structure of the housing 310.

In the first pivoted position shown in fig. 9A, the vane 360 is substantially perpendicular to the operating channel 385 and the first end 361 of the vane 360 now enters the operating channel 385. In the second pivot position shown in fig. 9B, the swivel 360 is tilted with respect to the operating channel 385, and the first end 361 of the swivel 360 is now clear of the operating channel 385 (i.e., does not interfere with the movement of the screw 350 within the channel). And, in the second pivot position, the compression spring 366 seated in the blind hole 368 is pressed by the first end 362 of the rotary vane 360, thereby accumulating elastic potential energy.

The acoustic feedback arrangement of the third embodiment is arranged to provide acoustic feedback during a screw withdrawal operation that urges the screw 350 out (i.e. upwardly along the operating channel) to indicate that the withdrawal movement of the screw 350 is in place. Fig. 9A shows a cross-sectional view at an initial stage of operation. Fig. 9B shows a cross-sectional view at an intermediate stage of operation. Fig. 9C shows a cross-sectional view at the completion stage of the operation.

At the initial stage of the operation shown in fig. 9A, the screw 350 is located at the lowermost position of the operation passage, and thus the screw 352 of the screw 350 presses the clamping arm 321 of the spring. Rotation of the tool 390 may cause the screw 350 to rise to the position shown in fig. 9B, during which the screw head 351 presses against the first end 361 of the rotary lobe 360, such that upward movement of the screw head 351 forces the rotary lobe 360 to rotate (counterclockwise rotation in fig. 9B), causing the second end 362 of the rotary lobe 360 to press against the compression spring 366, accumulating elastic potential energy. Rotation of the rotary vane 360 is ultimately limited by structure within the housing, terminating in the second pivot position condition of fig. 9B. When the position of the screw 350 is further raised to the position of fig. 9C, the screw head 351 releases the pressing of the first end 361 of the rotary vane 360, the rotary vane 360 performs a returning action under the elastic force of the compression spring 366, and sounds based on the collision, and the user is notified in an audible feedback manner that the screw 350 has been screwed to the end of the screw-removing operation stroke.

In some variations, the acoustic feedback device is configured as any suitable mechanism that accumulates energy in response to a change in position of the operating member during an initial or intermediate portion of the operating stroke and releases the energy to emit a sound during an end portion of the operating stroke.

In certain variants, the screw may be replaced by any operating member with a head and a threaded rod, or by other forms of operating member adapted to be placed in the operating channel of the housing and to be movable in position.

In certain variations, the wire trap spring is not a cage return spring, but is a U-shaped leaf spring, or any other suitable wire trap spring structure.

In some variations, the acoustic feedback device is configured to provide acoustic feedback during the screw-in operation stroke, or to provide acoustic feedback during the screw-in operation and the screw-out operation, respectively.

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;

a wire clamp spring structure disposed in the interior space of the housing, the wire clamp spring structure including a retention structure and a clamp arm connected by a bend, the retention structure for positioning the wire clamp spring structure within the housing, the clamp arm being pivotable in the interior space of the housing; and

an operating member placed in the operating passage of the housing and movable in position, the operating member being movable up and down in the operating passage by actuation of an operating tool,

the wiring terminal further comprises a sound feedback device, wherein the sound feedback device can trigger the reset action through the position change of the operating piece and make a sound in the reset action.

2. The terminal of claim 1, wherein the operating member includes a threaded rod and a head, the operating tool being operable to rotationally drive the head.

3. The wire connecting terminal of claim 1, further comprising a nut member disposed within the operating channel of the housing.

4. The wire connecting terminal according to claim 1, wherein the lower end of the operating member abuts the clamping arm of the wire clamping spring structure when the operating member is moved to the lower stroke position along the operating channel, so that the clamping arm is in the first position for free wire feeding, and the clamping arm is pivotable from the first position to the second position for wire clamping without being blocked by the operating member when the operating member is moved to the upper position of the operating channel.

5. The connection terminal of claim 1, wherein the audible feedback device is configured to accumulate energy in response to a change in the position of the operating member during an initial or intermediate portion of the operating stroke and release the energy to emit an audible sound during an end portion of the operating stroke.

6. The terminal of claim 1, wherein the operating member is a screw and the change in position of the operating member is at least one of:

position changes in the screwing operation; and

position change in the screw-removing operation.

7. A terminal according to any one of claims 1 to 6, characterised in that the acoustic feedback means comprises:

a blind hole formed in a wall of the operation channel;

the pressure spring is arranged in the blind hole; and

and the spherical stopper is attached to one end, facing the opening of the blind hole, of the pressure spring.

8. The terminal of claim 7, wherein the head portion of the operating member has a female ring structure, the female ring structure of the operating member partially receiving the ball stop and pushing the ball stop at least partially into the open circular opening when the female ring structure is facing the blind hole.

9. The electrical connection terminal of claim 8, wherein the reset action triggered by the change in position of the operating member comprises:

when the head of the operating element moves from a position not in contact with the blind hole to a position corresponding to the blind hole, the head of the operating element pushes the spherical stopper into the circular inlet of the opening;

when the head of the operating piece further moves to enable the concave ring structure to face the blind hole, the elastic force of the pressure spring in the blind hole pushes the spherical stopper out of the opening hole and enters the concave ring structure, and therefore feedback sound is generated.

10. A terminal according to any one of claims 1 to 6, characterised in that the acoustic feedback means comprises:

the flexible structure is arranged in the shell, one end of the flexible structure is fixed on the shell, the other end of the flexible structure is a free end, and the free end at least partially enters the operation channel through an opening formed in the wall of the operation channel when the flexible structure is free from external force.

11. The electrical connection terminal of claim 10, wherein the reset action triggered by the change in position of the operating member comprises:

deformation of the flexible structure by squeezing when the head of the operating member moves from a position away from contact with the flexible projection structure to a position contacting the free end of the flexible projection structure;

when the head of the operating piece is further moved to release the extrusion on the free end of the flexible structure, the flexible structure is reset and generates a feedback sound.

12. The terminal of claim 11, wherein the flexible structure is a flexible frame or a flexible board.

13. A terminal according to any one of claims 1 to 6, characterised in that the acoustic feedback means comprises:

a rotary vane pivotable about a rotary axis, a first end of the rotary vane being pivotable into the operating channel through an opening formed in a wall of the operating channel, a second end of the rotary vane being pivotable between a first pivot position in which the rotary vane is substantially perpendicular to the operating channel and when the first end of the rotary vane partially enters the operating channel, and a second pivot position in which the rotary vane is inclined to the operating channel and when the first end of the rotary vane exits the operating channel, the second pivot position being defined by a structure of the housing; and

a return spring disposed within the housing, the return spring applying a restoring force to the first end of the rotary vane to pivot the rotary vane to a first pivot position.

14. The electrical connection terminal of claim 13, wherein the reset action triggered by the change in position of the operating member comprises:

when the head of the operating element moves from a position far away from the rotary vane to a position contacting with the first end of the rotary vane, the head of the operating element pushes the rotary vane to pivot so that the first end of the rotary vane leaves the operating channel, after the pivoting of the rotary vane is limited by the shell, the rotary vane is placed at a second pivoting position, and the second end of the rotary vane pivots and presses the return spring;

when the head of the operating element further moves to be no longer in contact with the first end of the rotary vane, the rotary vane returns to the first pivoting position under the restoring force of the return spring, and the second end of the rotary vane collides with the limiting structure of the shell to generate feedback sound.

15. The terminal of claim 1, wherein the operating member comprises a screw or bolt.

16. The terminal of claim 1, wherein the wire clamping spring structure is a cage type pullback spring and the retention structure is a snap arm with an opening.

17. The wire connecting terminal of claim 1, wherein the wire clamping spring structure is a U-shaped spring plate and the retention structure is a retention arm.