Elastic sheet connector with improved structure

Abstract

The utility model discloses a structure improved shrapnel connector, which comprises an insulating shell, a conductive terminal, a pressing handle and a shrapnel, the conductive terminal is fixed in the insulating shell, one end of the shrapnel is fixed and positioned with the inner side wall of the insulating shell, and the other end of the shrapnel capable of swinging elastically and a conductive plate on the conductive terminal form an elastic wire clamping structure. The pressing handle can be installed on the insulating shell in a sliding mode by a set distance, one end of the pressing handle can stretch out of the outer side of the insulating shell to form an operation end, and the other end of the pressing handle is located in the insulating shell all the time to form a pressing end. The pressing end on the pressing handle can tightly abut against the concave arc face of the arc-shaped bending portion on the side wall of the other end of the elastic piece, the other end of the elastic piece is forced to elastically swing to open the elastic wire clamping structure, the elastic piece is simple in structure and low in manufacturing cost, the internal design of the insulating shell is compact, the occupied space is small, and the overall connector is small in size.

Description

Technical Field

[0001] The utility model relates to a connector for wiring, in particular to a spring connector with improved structure. Background Art

[0002] The spring clip connector is used for wiring of wires, with fast wiring speed and convenient wiring and withdrawal. The spring clip in the spring clip connector and the conductive plate of the conductive terminal can elastically clamp the wire inserted from the wire insertion hole to achieve conduction between the wire and the conductive terminal. The existing spring clip connector generally uses a pressing handle or hardware tool to press the spring clip, so that the spring clip swings to open the elastic wire clamping structure between the spring clip and the conductive plate, thereby achieving wire entry and withdrawal. The existing spring clips in this type of product are generally designed to be a straight surface between the spring clip and the pressing handle. In the process of pressing the handle downward, the angle between the pressing direction and the spring clip contact surface gradually decreases. Based on the basic mechanical principles, it can be seen that the rebound force of the handle is gradually decreasing, and the upward component of the handle becomes smaller, which may eventually cause the handle to be unable to rebound and there is a risk of getting stuck. Utility Model Content

[0003] In order to make up for the above shortcomings, the utility model provides a spring connector with an improved structure, which can ensure that the pressing handle rebounds smoothly and avoid the risk of the pressing handle being stuck and unable to rebound.

[0004] The utility model adopts the following technical solution to solve the technical problem: a structurally improved spring connector, comprising an insulating shell, a conductive terminal, a pressing handle and a spring, wherein the conductive terminal is fixedly installed in the insulating shell, one end of the spring is fixedly positioned with the inner wall of the insulating shell, the other end of the spring that can elastically swing forms an elastic clamping structure with the conductive plate on the conductive terminal, the pressing handle can be slidably installed on the insulating shell at a set distance, one end of the pressing handle can extend out of the outer side of the insulating shell to form an operating end, the other end of the pressing handle is always located inside the insulating shell to form a pressing end, an arc-shaped curved portion is formed on the side wall at the other end of the spring, and the pressing end on the pressing handle can be tightly pressed against the concave arc surface of the arc-shaped curved portion on the side wall at the other end of the spring, forcing the other end of the spring to elastically swing to open the elastic clamping structure.

[0005] As a further improvement of the present invention, the pressing end of the pressing handle forms a straight pressing surface that is directly opposite to the concave surface of the arc-shaped curved portion on the spring sheet, and the side wall of the pressing end of the pressing handle along its sliding direction is transitionally connected to the straight pressing surface through a rounded structure.

[0006] As a further improvement of the present invention, one end of the spring sheet and the other end of the spring sheet are connected by an arc-shaped bending portion to form a V-shaped structure, and the arc-shaped bending portion is a section of the other end of the spring sheet close to the arc-shaped bending portion.

[0007] As a further improvement of the utility model, a section of the arc-shaped bent portion is removed from the other end of the spring piece to form a clamping section, and both ends of the arc-shaped bent portion of the spring piece are connected to the arc-shaped bent portion and the clamping section through arc surfaces respectively.

[0008] As a further improvement of the utility model, the end of the clamping section at the other end of the spring sheet forms an outwardly warped structure that is bent toward the outside of the V-shaped structure.

[0009] As a further improvement of the utility model, a limit stop wall is further provided in the insulating shell, and the arc-shaped curved portion at the other end of the spring sheet away from the end of one end of the spring sheet stops on the limit stop wall, thereby limiting the elastic swing amplitude of the other end of the spring sheet.

[0010] As a further improvement of the present invention, the push handle is an L-shaped structure in which the thickness of the operating end is greater than the thickness of the pressing end, and the arc-shaped bend between the two ends of the spring is accommodated in a long strip space surrounded by the inner wall of the insulating shell and the L-shaped structure of the push handle.

[0011] As a further improvement of the present invention, the conductive terminal includes a U-shaped main body, the outer side wall of the U-shaped main body is tightly attached to the inner side wall of the insulating shell to achieve fixed positioning in the insulating shell, one side wall of the U-shaped main body is used to fix one end of the spring sheet, and the other side wall of the U-shaped main body forms a conductive plate, and the two ends of the conductive plate are respectively bent toward the outside of the U shape to form parallel terminal welding feet, and the two terminal welding feet can extend out of the insulating shell and be welded and fixed to the circuit board.

[0012] As a further improvement of the present invention, one end of the U-shaped bottom surface of the U-shaped main body of the conductive terminal is bent toward the U-shaped opening direction to form a wire insertion depth stop surface, and the other end of the U-shaped bottom surface of the U-shaped main body of the conductive terminal forms a guide piece that is directly opposite to the wire insertion hole of the insulating shell, and the end of the guide piece is stopped on the inner side wall of the insulating shell, and the surface of the guide piece is aligned and connected with the inner side wall of the wire insertion hole on the insulating shell. At least one positioning boss is provided on one side wall of the U-shaped main body of the conductive terminal, and at least one positioning hole is provided on the side wall of one end of the spring sheet. One end of the spring sheet is tightly attached to one side wall of the U-shaped main body of the conductive terminal, and the positioning boss is inserted in the positioning hole.

[0013] As a further improvement of the utility model, a handle slide is provided in the insulating shell, and the push handle can be slidably inserted in the handle slide, a linear guide rib is provided on the inner side wall of the handle slide, and a linear guide groove matching the linear guide rib is provided on the side wall of the push handle, and the linear guide rib can be relatively slidably inserted in the linear guide groove on the side wall of the push handle.

[0014] The beneficial technical effect of the utility model is that an arc-shaped curved portion is designed on the other end of the spring piece, and the pressing portion of the pressing handle contacts the concave curved surface of the arc-shaped curved portion. During the pressing process of the pressing handle, the rebound angle between the pressing end and the concave curved surface on the spring piece serving as the contact surface is always within the rebound range of the pressing handle, thereby effectively solving the risk of the pressing handle being stuck and unable to rebound. The spring piece of the utility model has a simple structure, low manufacturing cost, a compact internal design of the insulating shell, small occupied space, and a small overall connector volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of the shrapnel in the prior art;

[0016] Figure 2 This is an exploded view of the direction of the rebound force exerted by the spring sheet on the pressing handle in the prior art;

[0017] Figure 3 It is a three-dimensional structural diagram of the utility model;

[0018] Figure 4 This is a main cross-sectional view of the structural principle of the utility model;

[0019] Figure 5 This is a three-dimensional diagram of the assembly structure of the spring and the conductive terminal of the utility model;

[0020] Figure 6 This is an exploded view of the direction of the rebound force exerted by the spring sheet on the pressing handle of the utility model;

[0021] Figure 7 It is a three-dimensional diagram of the spring piece of the utility model;

[0022] Figure 8 This is a front view of the spring piece of the utility model;

[0023] Fig. 9 This is a comparison diagram of the rebound force exerted on the pressing handle by the spring sheet in the utility model and the prior art. DETAILED DESCRIPTION

[0024] Embodiment: A structurally improved spring connector comprises an insulating shell 1, a conductive terminal 2, a pressing handle 3 and a spring 4, wherein the conductive terminal 2 is fixedly installed in the insulating shell 1, one end of the spring 4 is fixedly positioned with the inner wall of the insulating shell 1, the other end of the spring 4 which can elastically swing forms an elastic clamping structure with the conductive plate 21 on the conductive terminal 2, the pressing handle 3 can be slidably installed on the insulating shell 1 at a set distance, one end of the pressing handle 3 can extend out of the outside of the insulating shell 1 to form an operating end 31, the other end of the pressing handle 3 is always located inside the insulating shell 1 to form a pressing end 32, an arc-shaped curved portion 41 is formed on the side wall at the other end of the spring 4, the pressing end 32 on the pressing handle 3 can be tightly pressed against the concave arc surface of the arc-shaped curved portion 41 on the side wall at the other end of the spring 4, forcing the other end of the spring 4 to elastically swing to open the elastic clamping structure. By providing an arc-shaped curved portion 41 on the spring sheet 4 for contact with the pressing end 32 of the pressing handle 3, the concave curved surface of the arc-shaped curved portion 41 forms a contact surface with the pressing handle 3, and the angle between the pressing end 32 of the pressing handle 3 and the arc-shaped curved portion 41 on the spring sheet 4 is always large enough, so that the rebound force applied by the spring sheet 4 to the pressing end 32 of the pressing handle 3 is large enough, ensuring that the pressing handle 3 can rebound smoothly after losing the external pressing force, thereby avoiding the situation where the pressing handle 3 cannot rebound and is stuck.

[0025] The pressing end 32 of the pressing handle 3 forms a straight pressing surface 321 facing the concave surface of the arc-shaped curved portion 41 on the spring sheet 4, and the side wall of the pressing end 32 of the pressing handle 3 along its sliding direction is transitionally connected with the straight pressing surface 321 through a rounded structure. The straight surface at the lower end of the pressing handle 3 contacts the concave surface on the spring sheet 4, and there is a crescent-shaped gap between the two. The rounded structures on both sides of the pressing handle 3 keep in close contact with the concave surface on the spring sheet 4, and the pressing handle 3 can slide smoothly on the concave surface of the spring sheet 4 without getting stuck.

[0026] One end of the spring piece 4 and the other end of the spring piece 4 are connected to form a V-shaped structure through an arc-shaped bending portion 42 , and the arc-shaped bending portion 41 is a section of the other end of the spring piece 4 close to the arc-shaped bending portion 42 .

[0027] The other end of the spring sheet 4 except for a section of the arc-shaped curved portion 41 is a clamping section 43 , and both ends of the arc-shaped curved portion 41 of the spring sheet 4 are connected with the arc-shaped bent portion 42 and the clamping section 43 through arc surfaces.

[0028] The end of the clamping section 43 at the other end of the spring sheet 4 forms an outward warping structure bent toward the outside of the V-shaped structure. By bending the end of the clamping section 43, it is beneficial to improve the strength of the holding section of the spring sheet 4 and the clamping force on the wire.

[0029] A limit stop wall 11 is also provided in the insulating housing 1, and the arc-shaped curved portion 41 at the other end of the spring sheet 4, which is away from the end of the spring sheet 4, is stopped on the limit stop wall, thereby limiting the elastic swing amplitude of the other end of the spring sheet 4. The limit stop wall 11 can prevent the other end of the spring sheet 4 from rebounding outward, avoiding too large a rebound angle, and preventing the spring sheet 4 from detaching from the conductive plate 21 and losing the wire clamping ability.

[0030] The pressing handle 3 is an L-shaped structure in which the thickness of the operating end 31 is greater than the thickness of the pressing end 32, and the arc-shaped bent portion 42 between the two ends of the spring 4 is accommodated in a long strip space surrounded by the inner wall of the insulating housing 1 and the L-shaped structure of the pressing handle 3. This structure makes full use of the internal space of the insulating housing 1, making the internal structure of the connector more compact and the overall volume of the connector smaller.

[0031] The conductive terminal 2 comprises a U-shaped main body, the outer side wall of which is in close contact with the inner side wall of the insulating housing 1 to achieve fixed positioning in the insulating housing 1, one side wall of the U-shaped main body is used to fix one end of the spring 4, and the other side wall of the U-shaped main body forms a conductive plate 21, and the two ends of the conductive plate 21 are respectively bent toward the outside of the U shape to form parallel terminal welding feet (22), and the two terminal welding feet can extend out of the insulating housing 1 and be welded and fixed to the circuit board. When the U-shaped main body of the conductive terminal 2 is tilted and placed in the insulating body along the diagonal direction of the insulating body, the terminal welding feet of the conductive terminal 2 can have an angle with the extension direction of the U-shaped main body, so that the lengths of the two terminal welding feet are different to place the welding parts of the two terminals on the same plane.

[0032] One end of the U-shaped bottom surface of the U-shaped main body of the conductive terminal 2 is bent toward the U-shaped opening direction to form a wire insertion depth stop surface 23, and the other end of the U-shaped bottom surface of the U-shaped main body of the conductive terminal 2 forms a guide piece 24 that is directly opposite to the wire insertion hole of the insulating shell 1, and the end of the guide piece 24 is stopped on the inner wall of the insulating shell 1, and the surface of the guide piece 24 is aligned and connected with the inner wall of the wire insertion hole on the insulating shell 1. At least one positioning boss 25 is provided on one side wall of the U-shaped main body of the conductive terminal 2, and at least one positioning hole 44 is provided on the side wall of one end of the spring sheet 4. One end of the spring sheet 4 is tightly attached to one side wall of the U-shaped main body of the conductive terminal 2, and the positioning boss 25 is inserted into the positioning hole 44. When the wire is inserted into the connector to a certain depth, the end of the wire contacts the wire insertion depth stop surface 23 and cannot be inserted further, indicating that the wire insertion depth has reached the requirement and the contact area between the conductive terminal 2 and the wire has increased. When the wire is inserted into the connector from the wire insertion hole, it is smoothly inserted between the spring piece 4 and the conductive plate 21 along the guide piece 24, thereby achieving smooth insertion and clamping of the wire.

[0033] A handle slide 12 is provided in the insulating shell 1, and the pressing handle 3 can be slidably inserted in the handle slide 12. A linear guide rib is provided on the inner wall of the handle slide 12, and a linear guide groove matching the linear guide rib is provided on the side wall of the pressing handle 3. The linear guide rib can be relatively slidably inserted in the linear guide groove on the side wall of the pressing handle 3.

Claims

1. A spring-type connector with improved structure, comprising an insulating housing (1), a conductive terminal (2), a pressing handle (3) and a spring (4), wherein the conductive terminal is fixedly mounted in the insulating housing, one end of the spring is fixedly positioned with the inner wall of the insulating housing, the other end of the spring that can be elastically swung forms an elastic clamping structure with a conductive plate (21) on the conductive terminal, the pressing handle can be slidably mounted on the insulating housing at a set distance, one end of the pressing handle can extend outside the insulating housing to form an operating end (31), and the other end of the pressing handle is always located inside the insulating housing to form a pressing end (32), characterized in that: An arc-shaped curved portion (41) is formed on the side wall at the other end of the spring sheet, and the pressing end on the pressing handle can press against the concave curved surface of the arc-shaped curved portion on the side wall at the other end of the spring sheet, forcing the other end of the spring sheet to swing elastically to open the elastic clamping structure.

2. The structure-improved spring connector according to claim 1 is characterized by: The pressing end of the pressing handle forms a straight pressing surface (321) facing the concave surface of the arc-shaped curved portion on the spring sheet, and the side wall of the pressing end of the pressing handle along its sliding direction is transitionally connected with the straight pressing surface through a rounded structure.

3. The structure-improved spring connector according to claim 2 is characterized by: One end of the spring sheet and the other end of the spring sheet are connected via an arc-shaped bending portion (42) to form a V-shaped structure, and the arc-shaped bending portion is a section of the other end of the spring sheet close to the arc-shaped bending portion.

4. The structure-improved spring connector according to claim 3 is characterized by: A section of the other end of the spring sheet except the arc-shaped curved portion is a clamping section (43), and both ends of the arc-shaped curved portion of the spring sheet are connected to the arc-shaped bent portion and the clamping section through arc curved surfaces.

5. The structure-improved spring connector according to claim 4 is characterized by: The end of the clamping section at the other end of the spring sheet forms an outwardly warped structure that is bent toward the outside of the V-shaped structure.

6. The structurally improved spring connector according to claim 1 or 4, characterized in that: A limit stop wall (11) is also provided in the insulating shell, and the end of the arc-shaped curved portion at the other end of the spring sheet away from the one end of the spring sheet is stopped on the limit stop wall, thereby limiting the elastic swing amplitude of the other end of the spring sheet.

7. The structure-improved spring connector according to claim 3 is characterized by: The pressing handle is an L-shaped structure with a thickness dimension of the operating end greater than that of the pressing end, and the arc-shaped bending portion between the two ends of the spring piece is accommodated in a long strip space surrounded by the inner side wall of the insulating shell and the L-shaped structure of the pressing handle.

8. The structure-improved spring connector according to claim 1 is characterized by: The conductive terminal comprises a U-shaped main body, the outer side wall of the U-shaped main body is tightly attached to the inner side wall of the insulating shell to achieve fixed positioning in the insulating shell, one side wall of the U-shaped main body is used to fix one end of the spring sheet, and the other side wall of the U-shaped main body forms a conductive plate, and the two ends of the conductive plate are respectively bent toward the outside of the U shape to form parallel terminal welding feet (22), and the two terminal welding feet can extend out of the insulating shell and be welded and fixed to the circuit board.

9. The structurally improved spring connector according to claim 8 is characterized by: One end of the U-shaped bottom surface of the U-shaped main body of the conductive terminal is bent toward the U-shaped opening direction to form a wire insertion depth stop surface (23), and the other end of the U-shaped bottom surface of the U-shaped main body of the conductive terminal forms a guide piece (24) that is directly opposite to the wire insertion hole of the insulating shell. The end of the guide piece is stopped on the inner wall of the insulating shell, and the surface of the guide piece is aligned and connected with the inner wall of the wire insertion hole on the insulating shell. At least one positioning protrusion (25) is provided on one side wall of the U-shaped main body of the conductive terminal, and at least one positioning hole (44) is provided on the side wall of one end of the spring sheet. One end of the spring sheet is tightly attached to one side wall of the U-shaped main body of the conductive terminal, and the positioning protrusion is inserted into the positioning hole.

10. The structure-improved spring connector according to claim 1, characterized in that: A handle slide (12) is provided in the insulating shell, and the push handle can be slidably inserted in the handle slide. A linear guide rib is provided on the inner side wall of the handle slide, and a linear guide groove matching the linear guide rib is provided on the side wall of the push handle. The linear guide rib can be relatively slidably inserted in the linear guide groove on the side wall of the push handle.

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