EP4089857A1 - Cam-type wire connector - Google Patents
Cam-type wire connector Download PDFInfo
- Publication number
- EP4089857A1 EP4089857A1 EP21173741.6A EP21173741A EP4089857A1 EP 4089857 A1 EP4089857 A1 EP 4089857A1 EP 21173741 A EP21173741 A EP 21173741A EP 4089857 A1 EP4089857 A1 EP 4089857A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- push
- cam
- lever
- conductive member
- elastic member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003780 insertion Methods 0.000 claims abstract description 43
- 230000037431 insertion Effects 0.000 claims abstract description 43
- 239000004020 conductor Substances 0.000 claims abstract description 17
- 230000000903 blocking effect Effects 0.000 claims abstract description 3
- 230000004308 accommodation Effects 0.000 claims description 14
- 230000004913 activation Effects 0.000 claims description 6
- 230000000994 depressogenic effect Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 description 10
- 238000001514 detection method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
- H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
- H01R4/4828—Spring-activating arrangements mounted on or integrally formed with the spring housing
- H01R4/48365—Spring-activating arrangements mounted on or integrally formed with the spring housing with integral release means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R31/00—Coupling parts supported only by co-operation with counterpart
- H01R31/08—Short-circuiting members for bridging contacts in a counterpart
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
- H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
- H01R4/48455—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar insertion of a wire only possible by pressing on the spring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
- H01R13/506—Bases; Cases composed of different pieces assembled by snap action of the parts
Definitions
- the present invention relates to a wire connector and in particular to a wire connector in which the wire can be clamped or released by operating a lever thereon.
- a manipulator is rotated against an insulating material housing on an imaginary axis by toggling the manipulator so that the manipulator is rotated in a clockwise direction through the support groove in the insulating material housing and the circularly curved section of a rotary support area on the manipulator in Figures 3 and 4 of the case, and in the process of rotation the manipulator section on a rotary support area drives the clamping edge of the clamping spring to change its state.
- the shape of the rotation support area shows that this type of wire clamp may rotate the manipulator in the released state as long as the manipulator is subjected to a force sufficient to make the manipulator resist the frictional force between the manipulator and the support groove, and it will maintain the angle after rotation. Therefore, after a number of unintentional collisions and rotation, and after the amplitude of rotation has accumulated to a specific angle, the spring will revert to the closed state from the released state due to the elasticity of the clamping spring, causing inconvenience in operation.
- the main purpose of the present invention is to provide a wire connector that can hold or release a wire at a specific position by toggling an element thereon to allow multiple wires to be electrically connected to each other.
- a lever is used to open or close the wire clamp with a cam as a spindle and automatically return to the original position within a certain degree of rotation angle, preventing the lever from accidentally returning to the closed state due to the elastic member's elasticity.
- the secondary purpose of the present invention is to provide a wire connector that provides a different feel during operation by matching the shape of the cam of the lever and the shape of the groove on the internal leaf spring so that the user know whether the lever is in the opening position of the wire connector by the feel of operating the lever, increasing the convenience of use.
- the next purpose of the present invention is to provide a wire connector with at least two or more positioning designs so that the originally movable and swingable lever is positioned when the wire connector being inserted into the open position of the wire, and further prevent the user from misunderstanding that the lever has not been pushed into position and continuing to force the lever, resulting its breakage and can't be used properly.
- a cam-type wire connector comprising a housing, a conductor, and a plurality of levers.
- the housing is formed with a plurality of insertion holes along an insertion direction, and an accommodation space is formed inside the housing for communicating with the insertion holes, so that a plurality of wires are inserted into the accommodation space along the insertion holes respectively.
- the conductor is mounted in the accommodation space of the housing and comprises a conductive member that a plurality of contacts adjacent to each other and a leaf spring pressing the wire against the conductive member.
- the leaf spring has a carrier plate connected to the conductive member and a wire clamping portion extending from the carrier plate to form a plurality of windows.
- a plurality of elastic members is formed with an end of the wire clamping portion that far away from the carrier plate for extending toward the carrier plate.
- the lever is movably assembled to the housing.
- the lever has an operating portion that cooperates with the leaf spring and a holding portion that being hold by a user.
- the contour of the operating portion is formed as a cam so that can operation portion is capable of swinging with a non-fixed axial, and the elastic member is capable of deformed by the cam.
- the elastic member blocks the window on the insertion direction when the lever is positioned in an initial position, and the elastic member is away from the window by the cam when the lever is positioned in an actuate position.
- the operating portion has a push-back edge that moves the elastic member and a touch edge that contacts the conductive member.
- the push-back edge has a fixed surface that contacts the elastic member in the activation position.
- the touch edge has an first positioning surface that contacts the conductive member in the initial position, an second positioning surface that contacts the conductive member in the actuate position, and a push-back surface between the first positioning surface and the second positioning surface.
- the lever When the lever is changed from the initial position to the actuate position, the lever contacts the conductive member and pushes the elastic member at the same time so that the elastic member is far away from the carrier plate for forming an insertion channel that allows the wire to enter the window, and the insertion channel is located in the interval between the second positioning surface and the fixed surface.
- the elastic member has a depressed area for contacting the push-back edge in the activation position.
- the elastic member comprises a back-fold portion, an extension portion that attached to the back-fold portion and extending along the insertion direction, and a covering portion that attached at one end of the extension portion and extending toward the carrier plate for blocking the window in the insertion direction.
- the depressed area is formed on the extension portion through two segments that extend in different directions.
- a first positioning structure and a second positioning structure are structured between the conductive member and the lever, the first positioning structure is formed between the elastic member and the cam, and the second positioning structure is formed between the lever and one of the conductive member or the carrier plate.
- one of the conductive member or the carrier plate extends a push-back block to form the second positioning structure
- the push-back notch has a first push-back surface that contacts the push-back block.
- the lever is restricted by the second positioning structure so that the lever can only swing for separating the push-back block.
- the first positioning surface and the second positioning surface are formed as a horizontal surface
- the push-back surface is formed as a curve surface
- the touch edge contacts the conductive member and the housing simultaneously in the initial position. Further, a distance is formed between the fixed surface and the second positioning surface, and the distance is larger than the diameter of the wire.
- the contact part between the lever and other members is a cam composed of a plane and an arc surface, and the lever can be moved in a straight line relative to the housing while swinging; during the movement that the lever moves relatively with the housing to the actuate position, the position of the contact point that the cam contacts the conductor can be continuously changed, and the contact method between the two affects the user's feeling when operating the unit; in addition, due to the shape of the cam, the lever will be positioned by the elastic member, the push-back block and the conductive member while in the actuate position, and a push-back block and a push-back notch are designed between the lever and the leaf spring to limit excessive rotation between them so that when the lever is in the actuate position, it remains stationary in the actuate position, and the cam-type wire connector comprises two types of positioning structures to prevent the lever changing from the initial state to the activation position; in this way, the lever is held in the actuate position and the leaf spring is
- a cam-type wire connector 1 of the present invention consists mainly of a housing 10, a conductor 20, and two levers 30.
- a wire can be plugged into the housing 10 along one direction.
- the housing 10 has an accommodated housing 11 in a hollow configuration and a cover 12 attached to the accommodated housing 11.
- the accommodated housing 11 is provided with an installation opening 111 on one side along the direction of wire insertion, and the accommodated housing 11 is provided with two installation holes 112 of different shapes from the installation opening 111 on one side away from the installation opening 111.
- the interior of the accommodated housing 11 is formed with a plurality of accommodation spaces 113 that separated by a spacing wall 113a (one accommodation space 113 that corresponds to one insertion hole 112) between the installation opening 111 and the insertion hole 112.
- the installation opening 111 is connected to each insertion hole 112 through the accommodation space 113.
- a detection channel 121 is formed through the cover 12 at a position corresponding to one of the insertion holes 112.
- a portion of the area of the installation opening 111 is aligned with the detection channel 121 so that the detection channel 121 is connected to the accommodation space 113 along the direction of the wire insertion.
- the cover 12 has a plurality of guiding surface 122 with an arc pattern and a push-back surface 123 with a flat pattern on one side near the accommodated housing 11.
- the guiding surface 122 and the push-back surface 123 are both located inside the housing 10, and the guiding surface 122 is far away from the insertion hole 112 in the insertion direction.
- the conductor 20 is constructed of a metal material and capable of conducting electricity, comprising a leaf spring 21 and a conductive member 22.
- the leaf spring 21 is provided with a carrier plate 211 assembled to the conductive member 22 and two wire clamping portions 212 perpendicular to the carrier plate 211.
- Each of the wire clamping portions 212 has a connecting section 212a parallel to the carrier plate 211 and a support section 212b connected to the connecting section 212a and the carrier plate 211.
- the support section 212b is perpendicular to the connecting section 212a
- the connecting section 212a has a flexible section 212c capable of deforming into an elastic member by back-folding at an end distant from the support section 212b in a direction opposite to the direction of insertion.
- the flexible section 212c of each of the wire clamping portions 212 is positioned between the carrier plate 211 and the connecting section 212a.
- the flexible section 212c may be divided into a back-fold section 2121 attached to the connecting section 212a, an extension portion 2122 attached to the back-fold portion 2121 extending in the opposite direction of the wire insertion direction, and a covering portion 2123 extending from one end of the extension portion 2122 toward the carrier plate 211.
- the extension portion 2122 is formed by two segments (first segment 2122a and second segment 2122b) extending in different directions with a depressed area 2122c facing the opening of the carrier plate 211 as in FIG. 4 .
- each of the wire clamping portions 212 penetrates along the wire insertion direction to form a window 212d.
- the flexible section 212c as an elastic member is positioned against the window 212d and can block the window 212d in the direction of wire insertion, and its length can contact the conductive member 22 set on the carrier portion 211 when the wire clamping portion 212 is not subject to external force.
- the width of the covering portion 2123 is smaller than of the width of the carrier plate 211 and the extension portion 2122, and a bending segment 2123b is formed near the end of the carrier plate 211 extending toward the window 212d, the bending segment 2123b can be deformed when the cam-type wire connector 1 clamps the wire.
- the conductive member 22 comprises a contact block 221 assembled on the carrier plate 211 for contacting the wires, three push-back blocks 222 extending outwardly from one end of the contact block 221 that are inclined to the contact block 221, and two guiding blocks 223 that are horizontal and slightly elevated away from the end of the contact block 221.
- the push-back block 222 and the guiding block 223 are staggered so that each guiding block 223 is positioned between the two push-back blocks 222.
- Each of the guiding blocks 223 is provided one on one through one of the windows 212d.
- one of the wire clamping portions 212 is aligned with the detection channel 121 when the conductor 20 is assembled in the interior of accommodation space 113 of the housing 10. In this way, users may check the proper conductivity of the conductor 20 through the detection channel 121.
- each of the wire clamping portions 212 will be simultaneously one to one aligned with the insertion holes 112 and window 212d of the housing 10.
- the insertion hole 112, the window 212d, and the flexible section 212c are sequentially arranged in a straight line to present a first linear pattern S1 parallel to the X-axis (as shown in Fig. 5 ).
- each flexible section 212c is positioned one on one above one of the guiding blocks 223 so that a portion of each flexible section 212c may be positioned between each of the two push-back blocks 222, and the plurality of push-back blocks 222 and the plurality of flexible sections 212c are aligned to form a second vertical pattern S2 perpendicular to the first linear pattern S1 arrangement (parallel to the Y-axis).
- the lever 30 has a holding portion 31 at one end which serves as a grip for the user and a connecting arm 32 on each of the opposite sides of the short axis of the holding portion 31 for acting with the leaf spring 21.
- each connecting arm 32 extends in the direction of the other connecting arm 32 and is constructed with a cam 33 between the two connecting arms 32.
- a snap-in groove 321 corresponding to the thickness of the spacing wall 113a is also constructed between the cam 33 and the connecting arm 32.
- Each connecting arm 32 is provided with a stopper 34 in the direction from the holding portion 31 toward the cam 33 and a push-back notch 35 in the direction from the holding portion 31 toward the cam 33. And the stopper 34 is spaced in the push-back notch 35.
- the stopper 34 is formed by extending outward from the connecting arm 32.
- the stopper 34 has a flat stopping surface 341 far away from one side of the connecting arm 32 and an push-back surface 342 adjacent to the stopping surface 341 but with a different surface orientation.
- the push-back notch 35 is provided with a push-back end surface 351 on opposite sides and a push-back opening 352 spaced apart on the push-back end surface 351.
- a first push-back surface 353 is provided on one side of the push-back end surface 351 near the cam 33, and a second push-back surface 354 is provided on one side away from the first push-back surface 353 and away from the cam 33.
- the first and second push-back surfaces 353 and 354 are separated by a distance H. The distance of the separation distance H is greater than the thickness of the push-back block 222.
- the second push-back surface 354 is provided with a top end 354a near the push-back opening 352 and the push-back opening 352 is provided with a bottom end 354b near the push-back end surface 351.
- the top end 354a is further away from the first push-back surface 353 than the bottom end 354b and the second push-back surface 354 and the first snap surface 353 are not parallel to each other, the distance between the top end 354a and the bottom end 354b is different from the second push-back surface 354 respectively.
- the second push-back surface 354 will gradually approach the first push-back surface 353 so that the push-back notch 35 exhibits a tapering pattern S3 from the push-back opening 352 toward the push-back end surface 351.
- the outer periphery of the cam 33 is formed with an actuating profile 331, which has a holding surface 331a, a second positioning surface 331b, a push-back surface 331c, an first positioning surface 331d, a fixed surface 331e, and a touch surface 331f in counterclockwise order along the profile of the cam 33 in the figure.
- the holding surface 331a is used to contact the push-back block 222 to activate the second positioning surface 331b on the long axis of the cam 33 near the side of the push-back notch 35 of the lever 30, which is described in detail later, and is located between the holding surface 331a andpush-back surfaces 331c.
- the holding surface 331a and push-back surfaces 331c and the touch surface 311f exhibit curved surfaces
- the second positioning surface 331b exhibits a flat pattern and is located between the push-back notch 35 and the first positioning surface 331d.
- the first positioning surface 331d and the fixed surface 331e also appear to be flat.
- the first positioning surface 331d intersects the second positioning surface 331b and is not parallel to the second positioning surface 331b.
- the fixed surface 331e is provided on the side of the cam 33 on its long axis away from the push-back notch 35 so that the second positioning surface 331b and the fixed surface 331e are both located on opposite sides of the cam 33.
- the second positioning surface 331b and the fixed surface 331e are also substantially parallel to each other.
- the touch surface 331f is provided on the side of the cam 33 on the short axis away from the first positioning surface 331d, and is located on opposite sides of the cam 33, respectively.
- the touch surface 331f is located between the holding surface 331a and the fixed surface 331e.
- the shortest distance between the touch surface 331f and the first positioning surface 331d is smaller than the shortest distance between the fixed surface 331e and the second positioning surface 331b.
- each lever 30 is movably assembled in the housing 10 when the members are assembled. Due to the size of the cam 33, the lever 30 and the housing 10 may swing and move relative to each other for non-fixed axial swinging.
- the holding portion 31 of the lever 30 is located outside the accommodation space 113 of the housing 10, while each of the cams 33 is located inside the accommodation space 113.
- Each cam 33 is positioned between the conductive member 22 and the extension portion 2122 of the leaf spring 21.
- the fixed surface 331e and the touch surface 331f of the cam 33 form the push-back edge of the lever 30 capable of driving the flexible section 212c when swinging during assembly.
- the second positioning surface 331b, the push-back surface 331c, and the first positioning surface 331d of the cam 33 form the touch edge of the lever 30 contacting the conductive member 22 during swinging.
- the first positioning surface 331d of the cam 33 is able to contact the contact block 221 of the conductive member 22.
- the second positioning surface 331b faces the push-back block 222 of the conductive member 22.
- the cam 33 in the initial position PI, the cam 33 does not touch the flexible section 212c of the leaf spring 21 so that the flexible section 212c is in an initial state A1 without deformation.
- the covering portion 2123 blocks the window 212d in the insertion direction so that the wire cannot enter the window 212d.
- the lever 30 when the lever 30 is in the initial position PI, the lever 30 can move laterally in a straight line relative to the housing 10 so that the lever 30 may move either towards the push-back block 222 or towards the insertion hole 112 of the housing 10.
- the touch surface 331f of the actuating profile 331 will be able to contact and push on the flexible section 212c of the wire clamping portion 212, causing the flexible section 212c to deform toward the connecting section 212a of the wire clamping portion 212 so that the flexible section 212c changes from the initial state A1 to a deformed state A2 in which the deformation occurs.
- the position of the joint 2121a between the back-fold section 2121 and the extension portion 2122 of the flexible section 212c is located to the right of the touch surface 311f in the horizontal direction (the direction in the figure) when the lever 30 is in the initial position PI, and the first segment 2122a of the extension portion 2122 extends in the direction away from the carrier plate 211 so that when the cam 30 swings, the first segment 2122a will form an inclined surface extending in the direction of the left side of the figure in either the initial state A1 or the deformed state A2.
- the contact between the touch surface 331f and the flexible section 212c is formed first on the first segment 2122a and keeps the covering portion 2123 away from the conductive member 22.
- the cam 33 when the cam 33 swings and contacts the first segment 2122a, the cam 33 will be guided by the force provided by the first segment 2122a to slide to the left and not to the right.
- the push-back surface 331c of the cam 33 when the cam 33 swings, the push-back surface 331c of the cam 33 will be able to slide and rotate counterclockwise against the conductive member 22 toward the right side, allowing the holding surface 331a to contact the push-back block 222.
- the holding surface 331a will contact the push-back block 222 of the conductor 20 with the movement of the cam 33 (in some embodiments, the push-back block 222 may be deformed by the squeezing of the cam 33).
- the action cam 33 changes the position of the area where the actuating profile 331 contacts the conductor 20 so that the surface of the cam 33 contacting the contact block 221 will change from the first positioning surface 331d to the push-back surface 331c.
- the lever 30 changes from a state where it is not acted upon by the flexible section 212c to a state where it is pushed against by the flexible section 212c.
- the resistance provided by the elastic member will be directly transmitted to the conductive member 22 by the shape design of the cam 30, and may produce a difference in the user's operating feel (resistance).
- the second segment 2122b will be driven by the first segment 2122a to approach the connecting section 212a during the swinging of the cam 33, and the covering portion 2123 is then driven away from the conductive member 22 by the second segment 2122b.
- the push-back surface 342 of the lever 30 in the process of moving the lever 30 away from the initial position PI, the push-back surface 342 of the lever 30 will maintain a certain spacing from the guiding surface 122 of the housing 10 so that the push-back surface 342 will not touch the guiding surface 122. However, the push-back surface 342 does not contact the guiding surface 122 for illustrative purposes only. In another embodiment, as shown in Fig. 8C , during the swinging of the lever 30 relative to the housing 10, the push-back surface 342 contacts the guiding surface 122 so that the stopping surface 341 of the lever 30 may indeed gradually approach the push-back surface 123 of the cover 12.
- the first push-back surface 353 of the push-back notch 35 and the push-back end surface 351 of the push-back notch 35 are in contact with different sides of the push-back block 222, and the first push-back surface 353 will be able to make face-to-face contact with the surface of the push-back block 222, thereby allowing the lever 30 to stop swinging relative to the housing 10 (i.e., in some embodiments where the length of the push-back block 222 is short, it is possible to stop the lever 30 from swinging without contacting the bottom end 351).
- the spacing H between the first and second push-back surfaces 353 and 354 is greater than the thickness of the push-back block 222, when the first push-back surface 353 and the push-back end 351 are both in contact with different sides of the push-back block 222, the second push-back surface 354 is spaced on the surface of the push-back block 222 without contacting the surface of the push-back block 222.
- the thickness of the push-back block 222 corresponds to the thickness of the push-back end surface 351 and the push-back notch 35 has a tapering pattern S3
- the push-back block 222 pushes against the first push-back surface 353 and the tip will just push back against the push-back end surface 351, which prevents the lever 30 from moving horizontally in the insertion direction.
- the extension direction of the push-back block 222 is at a blunt angle to the insertion direction and the push-back notch 35 is in a tapering pattern S3 so that the lever 30 may be guided by the push-back block 222 and the push-back notch 35 during the swinging of the lever 30 to move towards the push-back block 222.
- the cam-type wire connector 1 comprises two positioning structures that prevent the lever 30 from continuing to rotate after the elastic member (flexible section 212c) has been changed into the activation position.
- the positioning structure comprises a first positioning structure formed by the elastic member (flexible section 212c) and the cam 33 and a second positioning structure formed by the push-back block 222 and the push-back notch 35 of the conductive member 22, which prevents the user from mistakenly thinking that the lever 30 has not been pushed into position and continuing to apply force to the lever 30.
- the lever 30 is prevented from rotating by face contact between the first push-back surface 353 and the push-back block 222.
- the profile of the cam 33 can be changed to form a second positioning structure by setting a plane with a position and angle corresponding to the first push-back surface 353 in the present embodiment on the cam 33, without the need for a push-back notch 35.
- the first push-back surface 353 can be aligned with a portion of the surface of the cam 33.
- the push-back block 222 when the lever 30 touches the cover 12 of the housing 10, the push-back block 222 will simultaneously contact the push-back notch 35 and stop swinging relative to the housing 10, and prevent the lever 30 from moving in a straight line parallel to the insertion direction relative to the housing 10.
- the surface of the cam 33 of the lever 30 in contact with the contact block 221 changes from the push-back surface 331c to the second positioning surface 331b so that the fixed surface 331e of the cam 33 contacts the flexible section 212c, allowing the lever 30 to stay in the actuate position P2 where the leaf spring 21 can be deformed, and the flexible section 212c remains in the deformation state A2.
- the flexible section 212c remains in a position away from the conductive member 22, forming an insertion channel that allows the wires to enter the window 212d.
- the holding surface 331a of the actuating profile 331 is in contact with the push-back block 222 of the conductor 20, and the push-back surface 331c, the first positioning surface 331d, and the touch surface 331f of the actuating profile 331 are not in contact with the conductor 20.
- the second positioning surface 331b is in face contact with the conductive member 22, and the fixed surface 331e will be in face contact with the second segment 2122b, and both the second positioning surface 331b and the fixed surface 331e are approximately parallel, and the projection position of the fixed surface 331e in the vertical direction will be located in the second positioning surface 331b; thus, when the second segment 2122b acts on the cam 33 (fixed surface 311e), the force will be directed toward the second positioning surface 331b without generating a torque that can rotate the cam 33 and change the user's feel when operating the lever 30 when the actuate position P2 is reached.
- the lever 30 may also be returned to the actuate position P2 by the flexible section 212c in case of a slight collision with the lever 30 and swinging.
- lever 30 is able to move in two dimensions at the initial position P1, it can also be seen from Figure 9A that, when the lever 30 is in the actuate position P2, the lever 30 is prevented from moving in the vertical direction because the cam 33 is vertically against the second segment 2122b and the conductive member 22.
- the holding surface 331a of the cam 33 is directed to the right side against the push-back block 222, and push-back block 222 prevents the counterclockwise rotation of the lever 30 against the push-back notch 35 so that the position and rotation angle of the lever 30 are fixed after moving to the actuate position P2, and when the lever 30 leaves the actuate position P2, it must first swing and then move out of the actuate position P2.
- the lever 30 since the cams 33 are supported on the left and right sides by the push-back block 222 and the first segment 2122a, even if the aforementioned second positioning surface 331b and the fixed surface 331e are not parallel to each other, the lever 30 will not rotate in the actuate position P2 due to the action of the leaf spring 21, even if the force on the fixed surface 331e is projected on the second positioning surface 331b in the direction of the force.
- the wire 40 may be threaded through the insertion hole 112 of the housing 10 to the interior of accommodation space 113 of the housing 10.
- the wire 40 may pass through the flexible section 212c of the leaf spring 21 and the guiding block 223 of the conductive member 22, and through the window 212d of the leaf spring 21 so that the end of the wire 40 may be close to the cover 12 of the housing 10.
- the cam 33 of the lever 30 changes the position of the flexible section 212c acting on the leaf spring 21 so that the flexible section 212c pushes against the wire 40 close to the conductive member 22, which in turn presses the wire 40 against the contact with the conductive member 22.
- the wire 40 may electrically conduct with another wire 40 on another window 212d (blocked by the viewing angle) through the conductive member 22.
- the position of the joint 2121a between the back-fold section 2121 and the first segment 2122a will be closer to the wire 40 than the extension portion 2122.
- the difference from the first preferred embodiment is that the push-back block 222 of the conductive member 22 is formed from the carrier plate 211 of the leaf spring 21 towards the connecting section 212a of the leaf spring 21, while both the housing 10 and the lever 30 have the same structural form as the cam-type wire connector 1 of the first preferred embodiment. Furthermore, in this embodiment, it is used in the same manner as in the first preferred embodiment and will not be further described in this embodiment.
Abstract
Description
- The present invention relates to a wire connector and in particular to a wire connector in which the wire can be clamped or released by operating a lever thereon.
- In the current market, among electronic parts used to connect multiple wires, there is a kind of wire clip that releases or clamps wires by toggling a lever on them, for example, such a wire clip is disclosed in the
China invention patent No. CN104995799B . - In the case, a manipulator is rotated against an insulating material housing on an imaginary axis by toggling the manipulator so that the manipulator is rotated in a clockwise direction through the support groove in the insulating material housing and the circularly curved section of a rotary support area on the manipulator in
Figures 3 and4 of the case, and in the process of rotation the manipulator section on a rotary support area drives the clamping edge of the clamping spring to change its state. - In this way, different areas of the surface of the rotary support area are used directly as manipulators to rotate the manipulator and drive the clamping spring. Therefore, the shape of the rotation support area shows that this type of wire clamp may rotate the manipulator in the released state as long as the manipulator is subjected to a force sufficient to make the manipulator resist the frictional force between the manipulator and the support groove, and it will maintain the angle after rotation. Therefore, after a number of unintentional collisions and rotation, and after the amplitude of rotation has accumulated to a specific angle, the spring will revert to the closed state from the released state due to the elasticity of the clamping spring, causing inconvenience in operation.
- The main purpose of the present invention is to provide a wire connector that can hold or release a wire at a specific position by toggling an element thereon to allow multiple wires to be electrically connected to each other. In order to prevent a device from accidentally releasing or fixing the wire, a lever is used to open or close the wire clamp with a cam as a spindle and automatically return to the original position within a certain degree of rotation angle, preventing the lever from accidentally returning to the closed state due to the elastic member's elasticity.
- The secondary purpose of the present invention is to provide a wire connector that provides a different feel during operation by matching the shape of the cam of the lever and the shape of the groove on the internal leaf spring so that the user know whether the lever is in the opening position of the wire connector by the feel of operating the lever, increasing the convenience of use.
- The next purpose of the present invention is to provide a wire connector with at least two or more positioning designs so that the originally movable and swingable lever is positioned when the wire connector being inserted into the open position of the wire, and further prevent the user from misunderstanding that the lever has not been pushed into position and continuing to force the lever, resulting its breakage and can't be used properly.
- To achieve the aforementioned purpose, a cam-type wire connector according to this invention is provided, comprising a housing, a conductor, and a plurality of levers. The housing is formed with a plurality of insertion holes along an insertion direction, and an accommodation space is formed inside the housing for communicating with the insertion holes, so that a plurality of wires are inserted into the accommodation space along the insertion holes respectively.
- The conductor is mounted in the accommodation space of the housing and comprises a conductive member that a plurality of contacts adjacent to each other and a leaf spring pressing the wire against the conductive member. The leaf spring has a carrier plate connected to the conductive member and a wire clamping portion extending from the carrier plate to form a plurality of windows. A plurality of elastic members is formed with an end of the wire clamping portion that far away from the carrier plate for extending toward the carrier plate.
- The lever is movably assembled to the housing. The lever has an operating portion that cooperates with the leaf spring and a holding portion that being hold by a user. The contour of the operating portion is formed as a cam so that can operation portion is capable of swinging with a non-fixed axial, and the elastic member is capable of deformed by the cam.
- The elastic member blocks the window on the insertion direction when the lever is positioned in an initial position, and the elastic member is away from the window by the cam when the lever is positioned in an actuate position. The operating portion has a push-back edge that moves the elastic member and a touch edge that contacts the conductive member. The push-back edge has a fixed surface that contacts the elastic member in the activation position. The touch edge has an first positioning surface that contacts the conductive member in the initial position, an second positioning surface that contacts the conductive member in the actuate position, and a push-back surface between the first positioning surface and the second positioning surface. When the lever is changed from the initial position to the actuate position, the lever contacts the conductive member and pushes the elastic member at the same time so that the elastic member is far away from the carrier plate for forming an insertion channel that allows the wire to enter the window, and the insertion channel is located in the interval between the second positioning surface and the fixed surface.
- In an embodiment, the elastic member has a depressed area for contacting the push-back edge in the activation position.
- In more detail, the elastic member comprises a back-fold portion, an extension portion that attached to the back-fold portion and extending along the insertion direction, and a covering portion that attached at one end of the extension portion and extending toward the carrier plate for blocking the window in the insertion direction. The depressed area is formed on the extension portion through two segments that extend in different directions.
- In one embodiment, a first positioning structure and a second positioning structure are structured between the conductive member and the lever, the first positioning structure is formed between the elastic member and the cam, and the second positioning structure is formed between the lever and one of the conductive member or the carrier plate.
- As can be seen from the above, in one embodiment, one of the conductive member or the carrier plate extends a push-back block to form the second positioning structure, the push-back notch has a first push-back surface that contacts the push-back block.
- In one embodiment, the lever is restricted by the second positioning structure so that the lever can only swing for separating the push-back block.
- Regarding the detailed shape of the cam, in one embodiment, the first positioning surface and the second positioning surface are formed as a horizontal surface, and the push-back surface is formed as a curve surface.
- The touch edge contacts the conductive member and the housing simultaneously in the initial position. Further, a distance is formed between the fixed surface and the second positioning surface, and the distance is larger than the diameter of the wire.
- From the above description, it can be seen that the characteristics of this invention are: the contact part between the lever and other members is a cam composed of a plane and an arc surface, and the lever can be moved in a straight line relative to the housing while swinging; during the movement that the lever moves relatively with the housing to the actuate position, the position of the contact point that the cam contacts the conductor can be continuously changed, and the contact method between the two affects the user's feeling when operating the unit; in addition, due to the shape of the cam, the lever will be positioned by the elastic member, the push-back block and the conductive member while in the actuate position, and a push-back block and a push-back notch are designed between the lever and the leaf spring to limit excessive rotation between them so that when the lever is in the actuate position, it remains stationary in the actuate position, and the cam-type wire connector comprises two types of positioning structures to prevent the lever changing from the initial state to the activation position; in this way, the lever is held in the actuate position and the leaf spring is kept in a deformed state to facilitate the wire penetration, and the leaf spring and the conductive member are both firmly clamped to the wire after the lever is returned to its original position.
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Fig. 1 shows a three-dimensional view of a cam-type wire connector of this invention in a first preferred embodiment; -
Fig. 2 shows an exploded view of the embodiment inFig. 1 ; -
Fig. 3 shows a schematic view of a housing; -
Fig. 4 shows an exploded view of a conductor; -
Fig. 5 shows a schematic view of an insertion hole, a window, and a flexible section arranged to present a first linear pattern; -
Fig. 6 shows a side view of a lever; -
Fig. 7 shows a schematic view of the lever in the initial position; -
Fig. 8A shows a schematic view of the lever moving from the initial position to the actuate position; -
Fig. 8B shows a schematic view of the lever without touching the guiding surface; -
Fig. 8C shows a schematic view of the lever touching the guiding surface in another embodiment; -
Fig. 9A shows a schematic view of the lever in the actuate position; -
Fig. 9B shows a schematic view of a stopping surface touching a cover; -
Fig. 10 shows a schematic view of a wire threading into the cam-type wire connector; -
Fig. 11 shows a schematic view of a leaf spring and a conductive member that are clamped together into a wire; and -
Fig. 12 shows a schematic view of the cam-type wire connector of this invention in a second preferred embodiment. - Hereinafter, preferred embodiments of the present invention are cited, and further detailed description is given as follows in conjunction with the drawing.
- With reference to
Fig. 1 , in a first preferred embodiment, a cam-type wire connector 1 of the present invention consists mainly of ahousing 10, aconductor 20, and two levers 30. When the cam-type wire connector 1 is used, a wire can be plugged into thehousing 10 along one direction. By changing the shape of theconductor 20 through operating the twolevers 30, it is possible to clamp and electrically connect the two wires. - With reference to
Figs. 2 and3 , thehousing 10 has an accommodatedhousing 11 in a hollow configuration and acover 12 attached to the accommodatedhousing 11. The accommodatedhousing 11 is provided with aninstallation opening 111 on one side along the direction of wire insertion, and the accommodatedhousing 11 is provided with twoinstallation holes 112 of different shapes from the installation opening 111 on one side away from theinstallation opening 111. The interior of the accommodatedhousing 11 is formed with a plurality ofaccommodation spaces 113 that separated by aspacing wall 113a (oneaccommodation space 113 that corresponds to one insertion hole 112) between theinstallation opening 111 and theinsertion hole 112. Theinstallation opening 111 is connected to eachinsertion hole 112 through theaccommodation space 113. When assembled, thecover 12 is placed over theinstallation opening 111 in the direction of the insert. - As shown in the figure, in this embodiment, a
detection channel 121 is formed through thecover 12 at a position corresponding to one of the insertion holes 112. When thecover 12 is assembled in theinstallation opening 111, a portion of the area of theinstallation opening 111 is aligned with thedetection channel 121 so that thedetection channel 121 is connected to theaccommodation space 113 along the direction of the wire insertion. - Besides, the
cover 12 has a plurality of guidingsurface 122 with an arc pattern and a push-back surface 123 with a flat pattern on one side near the accommodatedhousing 11. When thecover 12 is assembled in theinstallation opening 111, the guidingsurface 122 and the push-back surface 123 are both located inside thehousing 10, and the guidingsurface 122 is far away from theinsertion hole 112 in the insertion direction. - With reference to
Fig. 2 andFig. 4 , theconductor 20 is constructed of a metal material and capable of conducting electricity, comprising aleaf spring 21 and aconductive member 22. Theleaf spring 21 is provided with acarrier plate 211 assembled to theconductive member 22 and twowire clamping portions 212 perpendicular to thecarrier plate 211. - Each of the
wire clamping portions 212 has a connectingsection 212a parallel to thecarrier plate 211 and asupport section 212b connected to the connectingsection 212a and thecarrier plate 211. In this embodiment, thesupport section 212b is perpendicular to the connectingsection 212a, and the connectingsection 212a has aflexible section 212c capable of deforming into an elastic member by back-folding at an end distant from thesupport section 212b in a direction opposite to the direction of insertion. Theflexible section 212c of each of thewire clamping portions 212 is positioned between thecarrier plate 211 and the connectingsection 212a. - In this embodiment, the
flexible section 212c may be divided into aback-fold section 2121 attached to the connectingsection 212a, anextension portion 2122 attached to theback-fold portion 2121 extending in the opposite direction of the wire insertion direction, and acovering portion 2123 extending from one end of theextension portion 2122 toward thecarrier plate 211. Theextension portion 2122 is formed by two segments (first segment 2122a andsecond segment 2122b) extending in different directions with adepressed area 2122c facing the opening of thecarrier plate 211 as inFIG. 4 . - The
support section 212b of each of thewire clamping portions 212 penetrates along the wire insertion direction to form awindow 212d. In this embodiment, theflexible section 212c as an elastic member is positioned against thewindow 212d and can block thewindow 212d in the direction of wire insertion, and its length can contact theconductive member 22 set on thecarrier portion 211 when thewire clamping portion 212 is not subject to external force. In addition, in this embodiment, the width of thecovering portion 2123 is smaller than of the width of thecarrier plate 211 and theextension portion 2122, and abending segment 2123b is formed near the end of thecarrier plate 211 extending toward thewindow 212d, thebending segment 2123b can be deformed when the cam-type wire connector 1 clamps the wire. - As shown in the figure, in this embodiment, the
conductive member 22 comprises acontact block 221 assembled on thecarrier plate 211 for contacting the wires, three push-back blocks 222 extending outwardly from one end of thecontact block 221 that are inclined to thecontact block 221, and two guidingblocks 223 that are horizontal and slightly elevated away from the end of thecontact block 221. The push-back block 222 and the guidingblock 223 are staggered so that each guidingblock 223 is positioned between the two push-back blocks 222. Each of the guiding blocks 223 is provided one on one through one of thewindows 212d. In this embodiment, one of thewire clamping portions 212 is aligned with thedetection channel 121 when theconductor 20 is assembled in the interior ofaccommodation space 113 of thehousing 10. In this way, users may check the proper conductivity of theconductor 20 through thedetection channel 121. - As shown in
Fig. 5 , when being assembled, each of thewire clamping portions 212 will be simultaneously one to one aligned with the insertion holes 112 andwindow 212d of thehousing 10. Theinsertion hole 112, thewindow 212d, and theflexible section 212c are sequentially arranged in a straight line to present a first linear pattern S1 parallel to the X-axis (as shown inFig. 5 ). Further, in this embodiment, eachflexible section 212c is positioned one on one above one of the guiding blocks 223 so that a portion of eachflexible section 212c may be positioned between each of the two push-back blocks 222, and the plurality of push-back blocks 222 and the plurality offlexible sections 212c are aligned to form a second vertical pattern S2 perpendicular to the first linear pattern S1 arrangement (parallel to the Y-axis). - In this embodiment, the
lever 30 has a holdingportion 31 at one end which serves as a grip for the user and a connectingarm 32 on each of the opposite sides of the short axis of the holdingportion 31 for acting with theleaf spring 21. In the detailed configuration, each connectingarm 32 extends in the direction of the other connectingarm 32 and is constructed with acam 33 between the two connectingarms 32. A snap-ingroove 321 corresponding to the thickness of thespacing wall 113a is also constructed between thecam 33 and the connectingarm 32. Each connectingarm 32 is provided with astopper 34 in the direction from the holdingportion 31 toward thecam 33 and a push-back notch 35 in the direction from the holdingportion 31 toward thecam 33. And thestopper 34 is spaced in the push-back notch 35. - In this embodiment, the
stopper 34 is formed by extending outward from the connectingarm 32. Thestopper 34 has a flat stoppingsurface 341 far away from one side of the connectingarm 32 and an push-back surface 342 adjacent to the stoppingsurface 341 but with a different surface orientation. The push-back notch 35 is provided with a push-back end surface 351 on opposite sides and a push-back opening 352 spaced apart on the push-back end surface 351. A first push-back surface 353 is provided on one side of the push-back end surface 351 near thecam 33, and a second push-back surface 354 is provided on one side away from the first push-back surface 353 and away from thecam 33. The first and second push-back surfaces back block 222. - As shown in
Fig. 6 , the second push-back surface 354 is provided with atop end 354a near the push-back opening 352 and the push-back opening 352 is provided with abottom end 354b near the push-back end surface 351. In this embodiment, since thetop end 354a is further away from the first push-back surface 353 than thebottom end 354b and the second push-back surface 354 and thefirst snap surface 353 are not parallel to each other, the distance between thetop end 354a and thebottom end 354b is different from the second push-back surface 354 respectively. In this way, when the push-back notch 35 is extended from the push-back opening 352 toward the push-back end surface 351 by the second push-back surface 354, the second push-back surface 354 will gradually approach the first push-back surface 353 so that the push-back notch 35 exhibits a tapering pattern S3 from the push-back opening 352 toward the push-back end surface 351. - Regarding the shape of the
cam 33, please refer toFig. 6 . The outer periphery of thecam 33 is formed with anactuating profile 331, which has a holdingsurface 331a, asecond positioning surface 331b, a push-back surface 331c, anfirst positioning surface 331d, a fixedsurface 331e, and atouch surface 331f in counterclockwise order along the profile of thecam 33 in the figure. The holdingsurface 331a is used to contact the push-back block 222 to activate thesecond positioning surface 331b on the long axis of thecam 33 near the side of the push-back notch 35 of thelever 30, which is described in detail later, and is located between the holdingsurface 331a andpush-back surfaces 331c. - As shown in the figure, in this embodiment, the holding
surface 331a and push-back surfaces 331c and the touch surface 311f exhibit curved surfaces, and thesecond positioning surface 331b exhibits a flat pattern and is located between the push-back notch 35 and thefirst positioning surface 331d. Thefirst positioning surface 331d and the fixedsurface 331e also appear to be flat. Thefirst positioning surface 331d intersects thesecond positioning surface 331b and is not parallel to thesecond positioning surface 331b. In addition, the fixedsurface 331e is provided on the side of thecam 33 on its long axis away from the push-back notch 35 so that thesecond positioning surface 331b and the fixedsurface 331e are both located on opposite sides of thecam 33. In this embodiment, thesecond positioning surface 331b and the fixedsurface 331e are also substantially parallel to each other. Further, thetouch surface 331f is provided on the side of thecam 33 on the short axis away from thefirst positioning surface 331d, and is located on opposite sides of thecam 33, respectively. Also, thetouch surface 331f is located between the holdingsurface 331a and the fixedsurface 331e. And as can be seen from the figure, the shortest distance between thetouch surface 331f and thefirst positioning surface 331d is smaller than the shortest distance between the fixedsurface 331e and thesecond positioning surface 331b. - With reference to
Fig. 7 , eachlever 30 is movably assembled in thehousing 10 when the members are assembled. Due to the size of thecam 33, thelever 30 and thehousing 10 may swing and move relative to each other for non-fixed axial swinging. The holdingportion 31 of thelever 30 is located outside theaccommodation space 113 of thehousing 10, while each of thecams 33 is located inside theaccommodation space 113. Eachcam 33 is positioned between theconductive member 22 and theextension portion 2122 of theleaf spring 21. The fixedsurface 331e and thetouch surface 331f of thecam 33 form the push-back edge of thelever 30 capable of driving theflexible section 212c when swinging during assembly. Thesecond positioning surface 331b, the push-back surface 331c, and thefirst positioning surface 331d of thecam 33 form the touch edge of thelever 30 contacting theconductive member 22 during swinging. - With reference to
Fig. 7 , when thelever 30 is in the initial position PI, thefirst positioning surface 331d of thecam 33 is able to contact thecontact block 221 of theconductive member 22. And thesecond positioning surface 331b faces the push-back block 222 of theconductive member 22. In this embodiment, in the initial position PI, thecam 33 does not touch theflexible section 212c of theleaf spring 21 so that theflexible section 212c is in an initial state A1 without deformation. In this case, the coveringportion 2123 blocks thewindow 212d in the insertion direction so that the wire cannot enter thewindow 212d. - As shown in
Fig. 7 , in this embodiment, when thelever 30 is in the initial position PI, thelever 30 can move laterally in a straight line relative to thehousing 10 so that thelever 30 may move either towards the push-back block 222 or towards theinsertion hole 112 of thehousing 10. - With reference to
Fig. 8A , when thelever 30 swing away from the initial position P1 against thehousing 10 in the direction of the arrow in the figure, thecam 33 will swing against the accommodatedhousing 11 of thehousing 10, thetouch surface 331f will contact and push against theflexible section 212c, and thefirst positioning surface 331d will be separated from thecontact block 221 and contact the block with the push-back surface 331c. - As shown in the figure, when the holding
surface 331a and push-back surfaces 331c of thecam 33 are in contact with the push-back block 222 and thecontact block 221, respectively and thefirst positioning surface 331d and the fixedsurface 331e of theactuating profile 331 are not in contact with theconductor 20, thetouch surface 331f of theactuating profile 331 will be able to contact and push on theflexible section 212c of thewire clamping portion 212, causing theflexible section 212c to deform toward the connectingsection 212a of thewire clamping portion 212 so that theflexible section 212c changes from the initial state A1 to a deformed state A2 in which the deformation occurs. - As shown in the figure, the position of the joint 2121a between the
back-fold section 2121 and theextension portion 2122 of theflexible section 212c is located to the right of the touch surface 311f in the horizontal direction (the direction in the figure) when thelever 30 is in the initial position PI, and thefirst segment 2122a of theextension portion 2122 extends in the direction away from thecarrier plate 211 so that when thecam 30 swings, thefirst segment 2122a will form an inclined surface extending in the direction of the left side of the figure in either the initial state A1 or the deformed state A2. The contact between thetouch surface 331f and theflexible section 212c is formed first on thefirst segment 2122a and keeps thecovering portion 2123 away from theconductive member 22. Therefore, when thecam 33 swings and contacts thefirst segment 2122a, thecam 33 will be guided by the force provided by thefirst segment 2122a to slide to the left and not to the right. With the above description, when thecam 33 swings, the push-back surface 331c of thecam 33 will be able to slide and rotate counterclockwise against theconductive member 22 toward the right side, allowing the holdingsurface 331a to contact the push-back block 222. - Afterwards, the holding
surface 331a will contact the push-back block 222 of theconductor 20 with the movement of the cam 33 (in some embodiments, the push-back block 222 may be deformed by the squeezing of the cam 33). At the same time, theaction cam 33 changes the position of the area where theactuating profile 331 contacts theconductor 20 so that the surface of thecam 33 contacting thecontact block 221 will change from thefirst positioning surface 331d to the push-back surface 331c. In this way, as thelever 30 is swinging, thelever 30 changes from a state where it is not acted upon by theflexible section 212c to a state where it is pushed against by theflexible section 212c. And when the rotation stroke of thelever 30 to the end (Fig. 9A ), the resistance provided by the elastic member will be directly transmitted to theconductive member 22 by the shape design of thecam 30, and may produce a difference in the user's operating feel (resistance). - Also, as shown in
Fig. 8A , in this embodiment, due to the angle between thefirst segment 2122a and thesecond segment 2122b and the length of thesecond segment 2122b, thesecond segment 2122b will be driven by thefirst segment 2122a to approach the connectingsection 212a during the swinging of thecam 33, and thecovering portion 2123 is then driven away from theconductive member 22 by thesecond segment 2122b. - With reference to
Fig. 8B , in this embodiment, in the process of moving thelever 30 away from the initial position PI, the push-back surface 342 of thelever 30 will maintain a certain spacing from the guidingsurface 122 of thehousing 10 so that the push-back surface 342 will not touch the guidingsurface 122. However, the push-back surface 342 does not contact the guidingsurface 122 for illustrative purposes only. In another embodiment, as shown inFig. 8C , during the swinging of thelever 30 relative to thehousing 10, the push-back surface 342 contacts the guidingsurface 122 so that the stoppingsurface 341 of thelever 30 may indeed gradually approach the push-back surface 123 of thecover 12. - With reference to
Fig. 9A andFig. 9B , when thelever 30 continues to swing against thehousing 10 and thus the holdingsurface 331a of thecam 33 is made to remain close to thecontact block 221 of theconductive member 22, thecam 33 continues to push against theflexible section 212c of theleaf spring 21 so that the coveringportion 2123 of theflexible section 212c is closer to the connectingsection 212a and farther away from theconductive member 22. - When the
lever 30 continues to swing to make the stoppingsurface 341 of the connectingarm 32 contacts the push-back surface 123 of thecover 12, because the push-back notch 35 exhibits a tapering pattern S3, the push-back block 222 of theconductive member 22 is made to easily enter the push-back notch 35 of thelever 30. When the push-back block 222 is positioned inside the push-back notch 35, the first push-back surface 353 of the push-back notch 35 and the push-back end surface 351 of the push-back notch 35 are in contact with different sides of the push-back block 222, and the first push-back surface 353 will be able to make face-to-face contact with the surface of the push-back block 222, thereby allowing thelever 30 to stop swinging relative to the housing 10 (i.e., in some embodiments where the length of the push-back block 222 is short, it is possible to stop thelever 30 from swinging without contacting the bottom end 351). In addition, because the spacing H between the first and second push-back surfaces back block 222, when the first push-back surface 353 and the push-back end 351 are both in contact with different sides of the push-back block 222, the second push-back surface 354 is spaced on the surface of the push-back block 222 without contacting the surface of the push-back block 222. - As can also be seen from
Fig. 9A , in this embodiment, since the thickness of the push-back block 222 corresponds to the thickness of the push-back end surface 351 and the push-back notch 35 has a tapering pattern S3, when both the first push-back surface 353 and the push-back end surface 351 are in contact with different sides of the push-back block 222, one side of the push-back block 222 pushes against the first push-back surface 353 and the tip will just push back against the push-back end surface 351, which prevents thelever 30 from moving horizontally in the insertion direction. In addition, even if thecam 30 does not fully contact the push-back block 222 during the swinging of thelever 30, the extension direction of the push-back block 222 is at a blunt angle to the insertion direction and the push-back notch 35 is in a tapering pattern S3 so that thelever 30 may be guided by the push-back block 222 and the push-back notch 35 during the swinging of thelever 30 to move towards the push-back block 222. - As can be seen from the above, in this embodiment, the cam-
type wire connector 1 comprises two positioning structures that prevent thelever 30 from continuing to rotate after the elastic member (flexible section 212c) has been changed into the activation position. The positioning structure comprises a first positioning structure formed by the elastic member (flexible section 212c) and thecam 33 and a second positioning structure formed by the push-back block 222 and the push-back notch 35 of theconductive member 22, which prevents the user from mistakenly thinking that thelever 30 has not been pushed into position and continuing to apply force to thelever 30. - In addition, in this embodiment, the
lever 30 is prevented from rotating by face contact between the first push-back surface 353 and the push-back block 222. In another embodiment of the present invention, the profile of thecam 33 can be changed to form a second positioning structure by setting a plane with a position and angle corresponding to the first push-back surface 353 in the present embodiment on thecam 33, without the need for a push-back notch 35. Or in other embodiments, the first push-back surface 353 can be aligned with a portion of the surface of thecam 33. - As shown in the figure, in this embodiment, when the
lever 30 touches thecover 12 of thehousing 10, the push-back block 222 will simultaneously contact the push-back notch 35 and stop swinging relative to thehousing 10, and prevent thelever 30 from moving in a straight line parallel to the insertion direction relative to thehousing 10. The surface of thecam 33 of thelever 30 in contact with the contact block 221 changes from the push-back surface 331c to thesecond positioning surface 331b so that the fixedsurface 331e of thecam 33 contacts theflexible section 212c, allowing thelever 30 to stay in the actuate position P2 where theleaf spring 21 can be deformed, and theflexible section 212c remains in the deformation state A2. And, theflexible section 212c remains in a position away from theconductive member 22, forming an insertion channel that allows the wires to enter thewindow 212d. - As can be seen from the figure, in this embodiment, when the
lever 30 is in the actuate position P2, the holdingsurface 331a of theactuating profile 331 is in contact with the push-back block 222 of theconductor 20, and the push-back surface 331c, thefirst positioning surface 331d, and thetouch surface 331f of theactuating profile 331 are not in contact with theconductor 20. Thesecond positioning surface 331b is in face contact with theconductive member 22, and the fixedsurface 331e will be in face contact with thesecond segment 2122b, and both thesecond positioning surface 331b and the fixedsurface 331e are approximately parallel, and the projection position of the fixedsurface 331e in the vertical direction will be located in thesecond positioning surface 331b; thus, when thesecond segment 2122b acts on the cam 33 (fixed surface 311e), the force will be directed toward thesecond positioning surface 331b without generating a torque that can rotate thecam 33 and change the user's feel when operating thelever 30 when the actuate position P2 is reached. Thelever 30 may also be returned to the actuate position P2 by theflexible section 212c in case of a slight collision with thelever 30 and swinging. - Also, Although the
lever 30 is able to move in two dimensions at the initial position P1, it can also be seen fromFigure 9A that, when thelever 30 is in the actuate position P2, thelever 30 is prevented from moving in the vertical direction because thecam 33 is vertically against thesecond segment 2122b and theconductive member 22. The holdingsurface 331a of thecam 33 is directed to the right side against the push-back block 222, and push-back block 222 prevents the counterclockwise rotation of thelever 30 against the push-back notch 35 so that the position and rotation angle of thelever 30 are fixed after moving to the actuate position P2, and when thelever 30 leaves the actuate position P2, it must first swing and then move out of the actuate position P2. - In addition, in other embodiments, since the
cams 33 are supported on the left and right sides by the push-back block 222 and thefirst segment 2122a, even if the aforementionedsecond positioning surface 331b and the fixedsurface 331e are not parallel to each other, thelever 30 will not rotate in the actuate position P2 due to the action of theleaf spring 21, even if the force on the fixedsurface 331e is projected on thesecond positioning surface 331b in the direction of the force. - With reference to
Fig. 10 andFig. 11 , after thelever 30 is in the actuate position P2, thewire 40 may be threaded through theinsertion hole 112 of thehousing 10 to the interior ofaccommodation space 113 of thehousing 10. Thewire 40 may pass through theflexible section 212c of theleaf spring 21 and the guidingblock 223 of theconductive member 22, and through thewindow 212d of theleaf spring 21 so that the end of thewire 40 may be close to thecover 12 of thehousing 10. Afterwards, during the movement of thelever 30 from the actuate position P2 to the initial position P1, thecam 33 of thelever 30 changes the position of theflexible section 212c acting on theleaf spring 21 so that theflexible section 212c pushes against thewire 40 close to theconductive member 22, which in turn presses thewire 40 against the contact with theconductive member 22. In this way, thewire 40 may electrically conduct with anotherwire 40 on anotherwindow 212d (blocked by the viewing angle) through theconductive member 22. In addition, as can be seen fromFigs. 10 and11 , when thewire 40 enters thewindow 212d, the position of the joint 2121a between theback-fold section 2121 and thefirst segment 2122a will be closer to thewire 40 than theextension portion 2122. - With reference to
Fig. 12 , in a second preferred embodiment, the difference from the first preferred embodiment is that the push-back block 222 of theconductive member 22 is formed from thecarrier plate 211 of theleaf spring 21 towards the connectingsection 212a of theleaf spring 21, while both thehousing 10 and thelever 30 have the same structural form as the cam-type wire connector 1 of the first preferred embodiment. Furthermore, in this embodiment, it is used in the same manner as in the first preferred embodiment and will not be further described in this embodiment.
Claims (9)
- A cam-type wire connector (1), characterized in comprising:a housing (10), being formed with a plurality of insertion holes (112) along an insertion direction, and an accommodation space (113) is formed inside the housing (10) for communicating with the insertion holes (112) so that a plurality of wires (40) are inserted into the accommodation space (113) along the insertion holes (112);a conductor (20), being mounted in the accommodation space (113) of the housing (10) and comprising a conductive member (22) forming a plurality of contacts adjacent to each other and a leaf spring (21) pressing the wire (40) against the conductive member (22), the leaf spring (21) has a carrier plate (211) connected to the conductive member (22) and a wire clamping portion (212) extending from the carrier plate (211) to form a plurality of windows (212d),and a plurality of elastic members is formed with an end of the wire clamping portion (212) that far away from the carrier plate (211) for extending toward the carrier plate (211);a plurality of levers (30), being movably assembled in the housing (10) and having an operating portion that cooperates with the leaf spring (21) and a holding portion (31) for being hold by a user, the contour of the operating portion is formed as a cam (33) so that the operation portion is capable of swinging with a non-fixed axial ,and elastic member is capable of being deformed by the cam (33);wherein the elastic member blocks the window (212d) on the insertion direction when the lever (30) is positioned in an initial position (P1), and the elastic member is away from the window (212d) by the cam (33) when the lever (30) is positioned in an actuate position (P2); the operating portion has a push-back edge that moves the elastic member and a touch edge that contacts the conductive member (22), the push-back edge has a fixed surface (331e) that contacts the elastic member in the activation position, the touch edge has a first positioning surface (331d) that contacts the conductive member (22) in the initial position (P1), a second positioning surface (331b) that contacts the conductive member (22) in the actuate position (P2), and a push-back surface (331c) between the first positioning surface (331d) and the second positioning surface (331b), when the lever (30) is changed from the initial position (P1) to the actuate position (P2), the lever (30) contacts the conductive member (22) and pushes the elastic member at the same time so that the elastic member is far away from the carrier plate (211) for forming an insertion channel that allows the wire (40) to enter the window (212d), and the insertion channel is located in the interval between the second positioning surface (331b) and the fixed surface (331e).
- The cam-type wire connector (1) as claimed in claim 1, wherein the elastic member has a depressed area (2122c) for contacting the push-back edge in the activation position.
- The cam-type wire connector (1) as claimed in claim 2, wherein the elastic member comprises a back-fold portion (2121), an extension portion (2122) that attached to the back-fold portion (2121) and extending along the insertion direction, and a covering portion (2123) that attached at one end of the extension portion (2122) and extending toward the carrier plate (211) for blocking the window (212d) in the insertion direction, and the depressed area is formed on the extension portion (2122) through two segments that extend in different directions.
- The cam-type wire connector (1) as claimed in claim 1, wherein a first positioning structure and a second positioning structure are constructed between the conductive member (22) and the lever (30), the first positioning structure is formed between the elastic member and the cam (33), and the second positioning structure is formed between the lever (30) and one of the conductive member (22) or the carrier plate (211).
- The cam-type wire connector (1) as claimed in claim 4, wherein one of the conductive member (22) or the carrier plate (211) extends a push-back block (222), and a push-back notch (35) is provided with the lever (30) for cooperating the push-back block (222) to form the second positioning structure, the push-back notch (35) has a first push-back surface (353) that contacts the push-back block (222).
- The cam-type wire connector (1) as claimed in claim 5, wherein the lever (30) is restricted by the second positioning structure so that the lever (30) can only swing for separating the push-back block (222).
- The cam-type wire connector (1) as claimed in claim 1, wherein the first positioning surface (331d), the second positioning surface (331b) and the fixed surface (331e) are formed as a horizontal surface, and the push-back surface (331c) is formed as a curve surface.
- The cam-type wire connector (1) as claimed in claim 1, the touch edge contacts the conductive member (22) and the housing (10) simultaneously in the initial position (P1).
- The cam-type wire connector (1) as claimed in claim 1, wherein a distance is formed between the fixed surface (331e) and the second positioning surface (331b), and the distance is larger than the diameter of the wire (40).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP21173741.6A EP4089857A1 (en) | 2021-05-13 | 2021-05-13 | Cam-type wire connector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP21173741.6A EP4089857A1 (en) | 2021-05-13 | 2021-05-13 | Cam-type wire connector |
Publications (1)
Publication Number | Publication Date |
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EP4089857A1 true EP4089857A1 (en) | 2022-11-16 |
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ID=75919243
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP21173741.6A Pending EP4089857A1 (en) | 2021-05-13 | 2021-05-13 | Cam-type wire connector |
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Citations (6)
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CN104995799A (en) | 2013-02-13 | 2015-10-21 | Wago管理有限责任公司 | Conductor terminal |
DE102016116966A1 (en) * | 2016-09-09 | 2018-03-15 | Wago Verwaltungsgesellschaft Mbh | Spring terminal connection and conductor terminal |
US10014596B2 (en) * | 2015-05-19 | 2018-07-03 | Wago Verwaltungsgesellschaft Mbh | Conductor terminal |
US20180254568A1 (en) * | 2015-11-09 | 2018-09-06 | Wago Verwaltungsgesellschaft Mbh | Connection clamp |
DE202018106897U1 (en) * | 2018-12-04 | 2020-03-05 | WAGO Verwaltungsgesellschaft mit beschränkter Haftung | Spring terminal |
CN212810581U (en) * | 2020-08-03 | 2021-03-26 | 金笔电子(东莞)有限公司 | Reinforced conductive connector |
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2021
- 2021-05-13 EP EP21173741.6A patent/EP4089857A1/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN104995799A (en) | 2013-02-13 | 2015-10-21 | Wago管理有限责任公司 | Conductor terminal |
US10014596B2 (en) * | 2015-05-19 | 2018-07-03 | Wago Verwaltungsgesellschaft Mbh | Conductor terminal |
US20180254568A1 (en) * | 2015-11-09 | 2018-09-06 | Wago Verwaltungsgesellschaft Mbh | Connection clamp |
DE102016116966A1 (en) * | 2016-09-09 | 2018-03-15 | Wago Verwaltungsgesellschaft Mbh | Spring terminal connection and conductor terminal |
DE202018106897U1 (en) * | 2018-12-04 | 2020-03-05 | WAGO Verwaltungsgesellschaft mit beschränkter Haftung | Spring terminal |
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