TWM568512U - Electrical contact - Google Patents

Abstract

A conductive terminal includes a bottom plate, an upper resilient arm, at least one intermediate resilient arm, a contact arm and at least one snap arm. The bottom plate extends in the front-rear direction; the upper elastic arm is located above the bottom plate and extends in the front-rear direction; at least one intermediate elastic arm is sequentially connected between the bottom plate and the upper elastic arm, and each intermediate elastic arm extends in the front-rear direction, and the adjacent two The intermediate elastic arms have a spacing therebetween; the contact arms are connected to the upper elastic arms and extend upward; at least one of the fastening arms is coupled to the bottom plate and adjacent to the front end of the bottom plate, the buckle arms extend upwardly, spanning at least one intermediate elastic arm and being fastened On the upper elastic arm.

Description

Conductive terminal

The present invention relates to a conductive terminal, and more particularly to a conductive terminal for electrically connecting a conductive wiring formed on a circuit board and a component to be connected.

Chinese Patent No. CN200510055913.4 discloses a contact for electrically connecting a conductive wiring formed on a circuit board and a component to be connected. The contact member includes a welded portion extending in the front-rear direction, a spring arm extending from the rear end of the welded portion, and a pair of side wall portions rising from each side of the front end of the welded portion. The spring arm includes a rising portion that is raised from the rear end of the welded portion by the first curved portion, a straight portion that is bent forward by bending from the raised portion by the second curved portion, and by protruding upward from the front end of the straight portion A convex portion of the contact bent into an upper convex shape. Wherein the pair of side wall portions guide the up and down movement of the convex portion of the contact member. A rear end portion of the pair of side wall portions is respectively provided with a preload applying portion, and the preload applying portion is integrally formed with the side wall portion.

While the above patent discloses a spring arm construction that is bent in the fore and aft direction, such a configuration is not suitable in applications where higher demand is required, i.e., greater displacement of the raised portion of the contact member is required. Moreover, the position of the convex portion of the contact member in the above patent is close to the end portion of the welded portion, for example, the front end, and the convex portion of the contact member generates a lateral offset and a length of contact friction during the contact movement, and the force deflection acts on One end of the welded portion, for example, the front end, causes the other end of the welded portion, for example, the rear end to be subjected to an upward pulling force, which causes the welded portion to be peeled off.

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art described above and to provide a conductive terminal in which the contact arm has a large displacement.

The present invention provides a conductive terminal for the above technical problem, comprising a bottom plate, an upper elastic arm, at least one intermediate elastic arm, a contact arm and at least one buckle arm. The bottom plate extends in the front-rear direction; the upper elastic arm is located above the bottom plate and extends in the front-rear direction; at least one intermediate elastic arm is sequentially connected between the bottom plate and the upper elastic arm, and each of the intermediate elastic arms extends in the front-rear direction a contact arm is coupled to the upper resilient arm and extends upwardly, the top end having a contact portion; at least one buckle arm is coupled to the bottom plate, the buckle arm extends upwardly, spans over at least one intermediate resilient arm and is fastened On the upper elastic arm.

In some embodiments, the at least one intermediate resilient arm is connected end to end between the rear end of the bottom plate and the front end of the upper resilient arm; the contact arm is coupled to the rear end of the upper resilient arm; The at least one buckle arm is adjacent to the front end of the bottom plate.

In some embodiments, the projection of the contact arm on the bottom plate is behind the projection of the contact portion of the snap arm on the bottom plate.

In some embodiments, the projection of the contact portion of the contact arm on the bottom plate is centered at the front and rear of the bottom plate.

In some embodiments, the contact arm includes a first arm and a second arm. a first arm extending upward from the upper elastic arm; a second arm extending downward from the top end of the first arm; wherein a connection between the first arm and the second arm is a contact .

In some embodiments, the contact arm further includes a rib formed on the contact portion and at least a portion of the first arm and at least a portion of the second arm.

In some embodiments, the conductive terminal includes two buckle arms, and the two buckle arms are symmetrically disposed on opposite sides of the bottom plate.

In some embodiments, the buckle arm includes an upright portion and a cleat. The lower end portion of the upright portion is coupled to the bottom plate; the buckle piece is bent from the upper end portion of the upright portion toward the upper elastic arm and is capable of fastening the upper surface of the upper elastic arm.

In some embodiments, the lower front end of the upright portion of the buckle arm is flush with the front end of the bottom plate, and the front end of the upper portion is provided with a notch.

In some embodiments, the lower surface of the bottom plate is a weld face for welding, and the bottom plate is provided with at least one opening.

Compared with the prior art, the present invention has the following effects: The conductive terminal of the present invention has a bottom plate, an upper elastic arm, a buckle arm, a contact arm, and at least one intermediate elastic arm between the bottom plate and the upper elastic arm. The buckle arm can be fastened to the upper elastic arm across the intermediate elastic arm, that is, the buckle arm can span the distance between the intermediate elastic arm and the bottom plate, the distance between the upper elastic arm and the intermediate elastic arm, or even the adjacent two middle The spacing between the elastic arms is then fastened to the upper elastic arm to provide pre-stress of each elastic arm, so that when the contact arm is subjected to an external force, it has a large vertical movement distance, and can be applied to a situation where the demand height is high. At the same time, due to the addition of the intermediate elastic arm, the contact arm maintains sufficient elastic force during the vertical movement and at rest. Further, the intermediate elastic arm is connected between the rear end of the bottom plate and the front end of the upper elastic arm, and the contact arm is connected to the rear end of the upper elastic arm, so that the contact arm is closer to the middle position of the bottom plate and the intermediate elastic arm. Therefore, during the movement of the contact arm, the movement can be maintained in the up and down direction, the lateral offset is reduced, and after the contact arm is in full contact with the member to be connected, the downward force of the member to be connected can be applied to the middle position near the bottom plate. Therefore, the force on the front and rear ends of the bottom plate is relatively balanced, thereby maintaining a stable solder joint between the bottom plate and the circuit board.

While the present invention may be readily embodied as a different form of embodiment, it is to be understood that The exemplary description of the novel principles is not intended to limit the invention to what is described herein.

Thus, a feature indicated in this specification will be used to describe one of the features of one embodiment of the present invention, and is not intended to suggest that each embodiment of the present invention must have the features described. Moreover, it should be noted that this specification describes a number of features. Although certain features may be combined together to illustrate possible system designs, these features are also applicable to other combinations not explicitly illustrated. Accordingly, the illustrated combinations are not intended to be limiting, unless otherwise indicated.

In the embodiments shown in the figures, the indication of direction (such as up, down, front, and back) is used to explain that the structure and motion of the various elements of the present invention are not absolute but relative. These descriptions are suitable when the elements are in the positions shown in the figures. If the description of the position of these elements changes, the indications of these directions also change accordingly.

The preferred embodiments of the present invention are further elaborated below in conjunction with the drawings of the specification.

Referring to FIG. 1 to FIG. 4, an embodiment of the present type of conductive terminal is used for electrically connecting a conductive wiring formed on a circuit board and a component to be connected, the conductive terminal including a bottom plate 1, at least one intermediate elastic arm 2 An upper elastic arm 3, a contact arm 4 and at least one buckle arm 5.

The bottom plate 1 may be a rectangular metal plate having a length and a width, and the length direction of the bottom plate 1 may be defined as a front-rear direction, that is, the bottom plate 1 extends in the front-rear direction, the bottom plate 1 having opposite front ends 1A, rear ends 1B, and relative On both sides.

The lower surface of the bottom plate 1 is a soldering surface for soldering, and can be soldered to form a physical connection and an electrical connection with a conductive wiring on a circuit board (not shown). The bottom plate 1 can be provided with an opening 11 , for example, an elongated hole extending along the length of the bottom plate 1 . Of course, the shape of the opening 11 is not limited to a long hole, and other shapes such as a circular shape, an elliptical shape, a polygonal shape, and the like are also feasible; At the same time, the number of the openings 11 is not limited to one, and different shapes and different numbers of the openings 11 can be used in any combination. Opening the opening 11 in the bottom plate 1 is advantageous for enhancing the welding strength and the holding force of the welding.

The intermediate resilient arm 2 is located above the bottom plate 1 and may be a rectangular metal plate. Only one intermediate resilient arm 2 is shown in the figure, in which case the rear end of the intermediate resilient arm 2 can be smoothly connected, for example by a transition arc 12 connected to the rear end 1B of the base plate 1, the intermediate resilient arm 2 It extends forward in the front-rear direction and extends substantially to the front end 1A of the bottom plate 1. There is a spacing D1 between the intermediate resilient arm 2 and the base plate 1 (see Figure 4).

The upper elastic arm 3 is located above the intermediate elastic arm 2 and may be a rectangular metal plate. The front end of the upper resilient arm 3 is connectable to the front end of the intermediate resilient arm 2 by a smooth transitional connection, for example by a transition arc 21. The upper elastic arm 3 extends rearward in the front-rear direction, extending to the intermediate position of the bottom plate 1 or slightly beyond the intermediate position of the bottom plate 1. There is a spacing D2 between the upper resilient arm 3 and the intermediate resilient arm 2 (see Figure 4).

As described above, the intermediate resilient arm 2 is disposed between the bottom plate 1 and the upper resilient arm 3. The figure shows the case of only one intermediate resilient arm 2. In some other embodiments, the number of the intermediate elastic arms 2 may be plural. In this case, the lowermost intermediate elastic arm 2 is smoothly connected with the bottom plate 1, and the uppermost intermediate elastic arm 2 and the upper elastic arm 3 are smoothed. In the transitional connection, each of the intermediate elastic arms 2 is a smooth transition connection between the first and the last. There is a spacing between two adjacent intermediate resilient arms 2.

The smooth transitional connection of the contact arm 4 is connected to the rear end of the upper resilient arm 3, for example by a transition arc 31, and extends upwards. Preferably, the projection of the contact arm 4 on the base plate 1 is behind the projection of the buckle arm 5 on the base plate 1. In this case, the contact arm 4 is closer to the intermediate position of the base plate 1 than the buckle arm 5, as the contact arm 4 When the external force is moved downward, the pulling force of the rear end 1B of the bottom plate 1 is significantly reduced. Further preferably, the projection of the contact arm 4 on the bottom plate 1 is centered at the front and rear of the bottom plate 1, and at this time, the pulling force of the rear end 1B of the bottom plate 1 during the up and down movement of the contact arm 4 can be eliminated.

Further, the contact arm 4 includes a first arm 41 and a second arm 42. The first arm 41 extends from the upper elastic arm 3 at an obliquely small angle toward the front. The second arm 42 extends obliquely from the top end portion of the first arm 41 toward the front toward a small angle. In an embodiment, the lower end of the second arm 42 can have a vertical extension 43. The junction of the first arm 41 and the second arm 42 is a contact portion 44, and the contact portion 44 can be an arc. Preferably, the projection of the contact portion 44 of the contact arm 4 on the bottom plate 1 is behind the projection of the buckle arm 5 on the bottom plate and the projection of the contact portion 44 on the bottom plate 1 is centered at the front and rear of the bottom plate 1 That is, the contact portion 44 is located at an intermediate position in the longitudinal direction of the bottom plate 1, so that the movement of the contact portion 44 during the vertical movement can be maintained in the up and down direction and the lateral movement can be greatly reduced, and the front end 1A of the bottom plate 1 can be made rearward. The force of the end 1B is relatively balanced.

Further, the contact arm 4 further includes a rib 45. The rib 45 is formed on the contact portion 44 and at least a portion of the first arm 41 and at least a portion of the second arm 42, and protrudes from the outer surfaces of the contact portion 44, the first arm 41, and the second arm 42. The rib 45 is used to contact a member to be connected (such as a conductive pad of a circuit board, a plate-like terminal, etc.), and the contact surface can be made more reliable by the curved surface configuration of the rib 45. In an embodiment, the ribs may also be omitted.

The conductive terminal of the embodiment includes two latching arms 5, and the two latching arms 5 are symmetrically disposed on opposite sides of the bottom plate 1 and adjacent to the front end 1A of the bottom plate 1. In some other embodiments, the number of the buckle arms 5 may be only one, or may be more.

The buckle arm 5 extends upwardly across the at least one intermediate resilient arm 2 and is fastened to the upper resilient arm 3. In detail, the buckle arm 5 may include an upright portion 51 and a cleat 52. The upright portion 51 has a lower end portion connected to the bottom plate 1 and extends upward to the upper elastic arm 3; the cleat 52 is bent from the upper end portion of the upright portion 51 toward the upper elastic arm 3 and is fastened to the upper surface of the upper elastic arm 3. The height of the upright portion 51 is equal to the thickness of the intermediate resilient arm 2, the thickness of the upper resilient arm 3, the spacing D1 between the intermediate resilient arm 2 and the base plate 1, and the sum of the spacing D2 between the upper resilient arm 3 and the intermediate resilient arm 2. In other embodiments, the two fastening arms 5 are fastened to the upper surface of the elastic arm 3, and the upper elastic arm 3 and the intermediate elastic arm 2 are pre-stressed in a state where the conductive terminals are not used, so that the conductive terminals are pressed. In the connected state, there is a greater positive contact pressure, and further, the intermediate elastic arm 2 and the bottom plate 1 can be maintained at a distance D1, so that the upper elastic arm 3 and the intermediate elastic arm 2 are maintained at a distance D2. Thus, the conductive terminals can be controlled and maintained at a predetermined overall height when there is no crimp contact and after the crimping is released. The upright portions 51 of the two buckle arms 5 are respectively located outside the opposite side edges of the intermediate elastic arm 2 and the upper elastic arm 3, and can restrict the intermediate elastic arm 2 and the upper elastic arm 3 from moving downward under pressure. The movement of the side direction of the time can guide the contact arm 4 to move up and down, ensuring that it is not laterally skewed during the up and down movement. The front end portion of the upright portion 51 may be provided with a notch. For example, the notch portion may be disposed at a position facing the transition arc 21 . In the present invention, the front end of the lower portion of the upright portion 51 of the buckle arm 5 is flush with the front end 1A of the bottom plate 1, and the front end of the upper portion of the upright portion 51 is provided with a notch which causes the cleat 52 to be displaced rearward to make the cleat The position of the transitional arc 21 is then released to the upper surface of the upper resilient arm 3. Therefore, the lower portion of the upright portion 51 can be wider to increase the strength of the buckle arm 5. In an embodiment, the upright portion 51 of the buckle arm 5 may be disposed near the front end 1A of the bottom plate 1 and at a distance from the front end 1A to avoid the position of the transition arc 21, so that the buckle 52 is fastened to the upper elastic arm 3. The surface, at this time, the uprights 51 may be of equal width and need not have a gap.

In the present invention, each component of the conductive terminal, such as the bottom plate 1, the intermediate elastic arm 2, the upper elastic arm 3, the contact arm 4, the buckle arm 5, and the like, may be an integral structure, for example, formed by multiple bending forming. structure.

The above is only a preferred embodiment of the present invention, and is not intended to limit the embodiments of the present invention. Those skilled in the art can make corresponding modifications or modifications in a very convenient manner according to the main idea and spirit of the present invention. The scope of protection shall be subject to the scope of protection required by the scope of application for patents.

1‧‧‧floor

1A‧‧‧ front end

1B‧‧‧ Backend

11‧‧‧Opening

12‧‧‧Transition arc

2‧‧‧Intermediate elastic arm

21‧‧‧Transition arc

3‧‧‧Upper elastic arm

31‧‧‧Transition arc

4‧‧‧Contact arm

41‧‧‧First arm

42‧‧‧second arm

43‧‧‧ Vertical extension

44‧‧‧Contacts

45‧‧‧ rib

5‧‧‧ buckle arm

51‧‧‧Upright Department

52‧‧‧Bucks

D1‧‧‧ spacing

D2‧‧‧ spacing

Other features and effects of the present invention will be apparent from the following description of the drawings. FIG. 1 is a perspective view of an embodiment of the present invention. FIG. 3 is a perspective view of the conductive terminal shown in FIG. 1 at a different angle; and FIG. 4 is a front view of the conductive terminal shown in FIG. 1.

Claims (10)

A conductive terminal includes: a bottom plate extending in a front-rear direction; an upper elastic arm located above the bottom plate and extending in a front-rear direction; at least one intermediate elastic arm sequentially connected between the bottom plate and the upper elastic arm Each of the intermediate resilient arms extends in a front-rear direction; a contact arm coupled to the upper resilient arm and extending upwardly, the top end having a contact portion; and at least one latching arm coupled to the bottom plate, the buckle The arm extends upwardly across the at least one intermediate resilient arm and is snapped onto the upper resilient arm. The conductive terminal according to claim 1, wherein the at least one intermediate elastic arm is sequentially connected between the rear end of the bottom plate and the front end of the upper elastic arm; the contact arm is coupled to the upper elastic arm a rear end; the at least one buckle arm is adjacent to a front end of the bottom plate. The conductive terminal of claim 2, wherein a projection of the contact portion of the contact arm on the bottom plate is behind a projection of the buckle arm on the bottom plate. The conductive terminal of claim 3, wherein the projection of the contact portion of the contact arm on the bottom plate is centered at a front and rear of the bottom plate. The conductive terminal according to any one of claims 1 to 4, wherein the contact arm comprises: a first arm extending upward from the upper elastic arm; and a second arm from the An arm distal end portion extends downward toward the front; wherein the junction of the first arm and the second arm is a contact portion. The conductive terminal of claim 5, wherein the contact arm further comprises: a rib formed on the contact portion and at least a portion of the first arm and at least a portion of the second arm. The conductive terminal of claim 1, wherein the conductive terminal comprises two buckle arms, and the two buckle arms are symmetrically disposed on opposite side edges of the bottom plate. The conductive terminal of claim 7, wherein the buckle arm comprises: an upright portion, the lower end portion is connected to the bottom plate; and a buckle piece bent from the upper end portion of the upright portion toward the upper elastic arm and capable of being buckled Connect to the upper surface of the upper resilient arm. The conductive terminal according to claim 8, wherein a lower front end of the upright portion of the buckle arm is flush with a front end of the bottom plate, and a front end of the upper portion is provided with a notch. The conductive terminal of claim 1, wherein the lower surface of the bottom plate is a soldering surface for soldering, and the bottom plate is provided with at least one opening.