Handle terminal

Abstract

The invention discloses a handle terminal, which comprises an insulating seat, a turning piece, a conductive terminal and a clamping elastic piece, and is characterized in that in the process that the head end part of a force application arm rod rotates from an initial position to an unlocking position, a pressing block pushes a movable elastic arm to partially move relative to the conductive terminal at a jack so as to release the blocking of the jack; according to the scheme, the structure of the handle terminal is redesigned, the pivoting part is arranged on one side of the movable elastic arm, the structure is beneficial for prolonging the length of the arm of force, and the operation of the arm lever is more labor-saving.

Description

Technical Field

[0001] The invention relates to the technical field of wiring devices, and in particular to a handle terminal. Background Art

[0002] Wiring terminals are widely used in the field of mechanical engineering. Common structures include a combination of an insulating seat, a conductive terminal, a handle (also known as a turning piece), and a clamping spring. The clamping spring is composed of a movable spring arm, a fixed section, and a bent section connecting the two. In the initial position, the movable spring arm in the clamping spring cooperates with the conductive terminal to block the jack on the insulating seat. The jack is used for inserting cables, etc. By rotating the handle, the pressure block pushes the movable spring arm to move to release the blockage of the jack. After that, the cable can be inserted from the jack. After the movable spring arm is reset, a clamp is formed. Specifically, the scheme disclosed in the CN214898904U patent has the defect that the pivot center of the handle in this scheme is between the head end of the handle and the pressure block, and the pivot center is in the ring mouth of the bent section of the clamping spring. The force arm is short, and a large force is required to operate the handle. It is inconvenient to use and needs to be improved. Summary of the invention

[0003] To solve at least one of the above technical defects, the present invention provides the following technical solutions:

[0004] The present application document discloses a handle terminal, including an insulating seat, a turning piece, a conductive terminal, and a clamping spring. The insulating seat is provided with a chamber and an opening groove and a plug hole are provided on the peripheral wall thereof. The clamping spring is provided in the chamber of the insulating seat and the conductive terminal is at least partially in the chamber. The clamping spring has a movable spring arm, a fixed section, and a bending section connecting the two. The movable spring arm in the initial position cooperates with the conductive terminal part at the plug hole to block the plug hole. The turning piece has an arm rod, a pivoting portion, and a pressing block. The clamping spring is in the chamber. Pivot portions and pressure blocks are arranged at intervals along the length extension direction of the arm rod in the chamber. The arm rod is pivotally connected to the cavity wall of the chamber through the pivot portion and the head end of the arm rod is located at the opening groove. The pivot portion is located on one side of the movable elastic arm and the movable elastic arm is located on the moving path of the pressure block. In the process of applying force to the head end of the arm rod to rotate it from the initial position to the unlocked position, the pressure block pushes the movable elastic arm to move relative to the conductive terminal part at the socket to release the blockage of the socket, and the bending section is deformed synchronously during the movement of the movable elastic arm.

[0005] In this solution, the structure of the handle terminal is redesigned, and the pivoting portion is placed on one side of the movable elastic arm. This structure helps to extend the length of the force arm and saves more effort in operating the arm.

[0006] When the handle terminal is used, if the movable elastic arm at the initial position extends into the socket and its end abuts against the conductive terminal part at the socket, the socket is blocked by the movable elastic arm, that is, the socket is blocked, and force is applied to the head end of the arm rod at the opening slot to rotate the pull member, and the pressing block simultaneously pushes the movable elastic arm to move, so that its end gradually moves away from the conductive terminal part at the socket, and the movable elastic arm releases the blocking of the socket, that is, the blockade of the socket is released. At this time, the cable can be inserted from the socket hole to the abutment point between the end of the movable elastic arm and the conductive terminal part at the socket. After the external force is removed, the bending section is restored and the movable elastic arm is reset synchronously. The reset movable elastic arm pushes the pressing block to reset the arm rod synchronously. The reset end of the movable elastic arm cooperates with the conductive terminal part at the socket to clamp the cable between the two. The handle terminal is easy to operate.

[0007] As for the position of the pivot part, the pivot part and the pressing block are on the same side or on both sides, such as the pivot part is between the pressing block and the head end of the arm. As for the distance between the pivot part and the pressing block, it can be selected according to needs, and the closer the pivot part is to the pressing block, the more labor-saving it is.

[0008] Preferably, the pressure block is located between the pivotal part and the head end of the arm, and the pivotal part and the pressure block are on the same side of the arm. The pressure block is located between the pivotal part and the arm to help extend the force arm and save effort in operation. The layout of the pressure block and the pivotal part on the same side is more conducive to cooperation with the clamping spring sheet and facilitates rapid assembly.

[0009] Furthermore, a guide arc groove is provided on the side of the conductive terminal part in the chamber, and the tail end of the arm is located in the guide arc groove. The tail end of the arm is supported by the guide arc groove during the rotation of the tail end of the arm. Adding the guide arc groove to assist in the rotation of the guide arm helps to improve the stability of the structure.

[0010] For the conductive terminal, the structure of the conductive terminal can be selected according to the needs, and the conductive terminal can be selected to be completely or partially in the insulating seat cavity. Preferably, the conductive terminal includes a conductive body and a conductive pin connected thereto, the conductive body is in the cavity of the insulating seat, the conductive body includes a front guide piece, a rear guide piece and a side guide piece connecting the two, the movable elastic arm cooperates with the front guide piece to block the plug hole, a guide arc groove is set on the top surface of the side guide piece, the conductive pin can be in the cavity or extend from the cavity, and the guide groove formed on the side guide piece is convenient for cooperation with the arm rod, which helps to simplify the structure.

[0011] Furthermore, the top surface of the side guide piece of the conductive terminal is bent and a guide arc groove is formed on the bent surface. Increasing the bent surface helps to increase the contact area with the rear end of the arm and the pivotal part, further improving the stability of the structure.

[0012] Furthermore, the head end of the arm rod extends out from the opening slot, and a protrusion for preventing hitters is provided on the side of the opening slot and on the shell wall adjacent to the initial position of the head end of the arm rod. The protrusion is on the moving path of the head end of the arm rod. In the process of the movable spring arm pushing the arm rod to return to the initial position, the head end of the arm rod hits the protrusion to slow down the return speed.

[0013] When in use, force is generally applied to the front end of the arm with the fingers. When the fingers are withdrawn, the movable spring arm pushes the arm to reset quickly. If the fingers are withdrawn slowly, the hand may be hit by the front end of the arm. In this regard, a protrusion is added to the moving path of the front end of the arm. During the process of the front end of the arm moving to the unlocked position, the front end of the arm abuts against the protrusion and deforms to pass over the protrusion. During the reset process of the front end of the arm, it hits the protrusion to be blocked and slow down the speed, thereby reducing the hand-hitting phenomenon and making it safer to use.

[0014] For the pivotal part, an axle body may be formed on the side of the arm to be inserted into a slot at the cavity wall to form a pivot connection, or an axle hole may be formed on the side of the arm to facilitate the insertion of the axle body at the cavity wall to form a pivotal connection, or an axle body may be formed on the side of the arm to serve as the pivotal part, and a socket may be formed along the axial direction at the end of the axle body to facilitate the insertion of the axle body at the cavity wall to form a pivotal connection, etc. The appropriate pivotal connection structure may be selected according to the needs.

[0015] Preferably, a shaft body is convexly formed on the side surface of the tail end of the arm rod, and the shaft body is used as the pivot part. A pivot groove is provided on the wall of the chamber, and the end of the shaft body extends into the pivot groove to form a pivot connection. The convexly formed shaft body to form a pivot part is more convenient for assembly, and with the support of the pivot groove wall, it helps to further improve the structural stability of the pivot part.

[0016] Furthermore, it also includes a support member, which is located at the cavity wall above the movable elastic arm and at one side of the pressure block. When the arm rod rotates to the unlocked position, the support member supports the pressure block in the direction of the force applied by the movable elastic arm to the pressure block.

[0017] When in the unlocked position, the movable elastic arm applies a large force to the pressing block, which may easily cause the pressing block to deform or break. In response to this, a support member is added in the present invention to assist in supporting the pressing block. The structural stability of the pressing block is increased under this structure, which helps to extend the service life of the handle terminal.

[0018] Furthermore, when the arm is rotated to the unlocked position, the support member is at least partially located between the pivot portion and the pressing block, so that the portion of the support member located between the two supports the pressing block. The support member is integrally formed on the cavity wall to help simplify the structure.

[0019] The support member can be fixed to the cavity wall after being independently formed, or can be integrally formed on the cavity wall of the insulating seat, depending on the needs.

[0020] Furthermore, the support member is integrally formed at the cavity wall of the chamber, and extends along the moving path of the pressure block. The support member supports the pressure block during the movement of the pressure block. The support member extends along the moving path of the pressure block, and the two are parallel. Therefore, the support member supports the pressure block throughout the movement of the pressure block, which helps to improve the structural stability of the pressure block.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention improves the position of the pivotal part, which helps to extend the lever arm and saves more effort in operation.

[0023] 2. The present invention adds a support member to support the pressing block, which helps to improve the structural stability of the pressing block and extend the service life of the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 is a schematic diagram of the structure of the handle terminal in Embodiment 1;

[0026] Figure 2 yes Figure 1 Schematic diagram of the structure after removing the cover plate;

[0027] Figure 3 yes Figure 1 A schematic diagram of the structure after removing the turning piece;

[0028] Figure 4 is a schematic diagram of the cross-sectional structure of the handle terminal in Example 1;

[0029] Figure 5 is a schematic structural diagram of the turning member in Embodiment 1;

[0030] Figure 6 This is a schematic diagram of the unlocking process of the handle terminal in Example 1;

[0031] Wherein, the accompanying drawings are marked as follows:

[0032] 1. Insulating seat; 2. Turning piece; 3. Clamping spring; 4. Conductive terminal; 5. Support member; 6. Protrusion; 20. Arm; 21. Head end of arm; 22. Pressing block; 23. Pivot portion; 31. Bending section; 32. Movable spring arm; 33. Fixed section; 34. Lower part; 41. Conductive pin; 42. Conductive body; 100. Chamber; 101. Opening slot; 102. Socket; 103. Pivot slot; 104. Cover plate; 421. Front guide plate; 422. Side guide plate; 423. Rear blade; 424. Guide arc slot. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] Example 1

[0035] In this example, a handle terminal includes an insulating seat 1, a turning member 2, a conductive terminal 4, and a clamping spring 3. The common configuration of the insulating seat is a single rectangular seat body with a preformed cavity inside, and the side of the seat body is open and closed with a cover plate 104, or Figure 1 , Figure 2 As shown, a plurality of base bodies are arranged side by side and the side openings of the base bodies at the sides are closed by a cover plate 104, and the side openings of the base bodies are used for installing internal components.

[0036] The insulating seat body peripheral wall is formed with an opening slot and a plug hole connected to the chamber, and the connecting cable extends into the plug hole. If the opening slot and the plug hole are on the same side or adjacent sides, Figure 1 , Figure 2 As shown, the opening slot 101 and the insertion hole 102 are located at adjacent surfaces of the insulating seat 1. The clamping spring 3 is installed in the cavity 100 of the seat, and the conductive terminal 4 is at least partially in the cavity 100 for connecting the cable. The clamping spring 3 includes a movable spring arm 32, a fixed section 33 and a bending section 31 connecting the two. Figure 4 , Figure 3 As shown, the clamping spring is in a U-shaped shape as a whole. In the initial position, the end of the movable spring arm 32 abuts against the conductive terminal 4 at the plug hole 102, and the movable spring arm 32 blocks the plug hole 102 to form a blockade. Figure 4 , Figure 3 As shown, when docking in the seat body cavity 100, the bent section 31 is sleeved on the convex shaft convexly formed on the cavity wall, and the fixed section is connected to the conductive terminal part in the cavity.

[0037] The turning member 2 comprises an arm 20, a pivoting portion 23, and a pressing block 22. The rear end of the arm 20 is located in the seat body chamber 100 of the insulating seat 1, and the front end of the arm 20 is located in the opening groove or as shown in FIG. Figure 1 As shown, the arm head end 21 extends from the opening slot 101, and the configuration of the arm head end 21 can be selected according to the needs, such as Figure 1 , Figure 2 , Figure 5 The front end portion 21 of the arm rod is convex at the side to expand the contact area with the fingers, and a plurality of convex ridges can be formed on the top surface of the front end portion 21 of the arm rod to facilitate force application.

[0038] The arm 20 in the chamber 100 is formed with a pivoting portion 23 and a pressing block 22 spaced apart along its length extension direction. Figure 2 , Figure 4 , Figure 5 As shown, in this example, the pressing block 22 is located between the pivot portion 23 and the arm head end portion 21, the pressing block 22 and the pivot portion 23 are located on the same side of the arm 20, and the pivot portion 23 and the pressing block 22 are both located on one side of the movable elastic arm 32. Figure 4 In the state shown, the pivoting part 23 and the pressing block 22 are both above the lower part 34 of the movable elastic arm 32, the arm 20 is pivotally connected to the cavity wall of the insulating seat 1 through the pivoting part 23, the pivoting part 23 is separated from the bending section 31 of the clamping spring 3, and the movable elastic arm 32 is on the moving path of the pressing block 22. Compared with the solution disclosed in CN214898904U in which the pivoting part is located at the ring opening of the clamping spring bending section, when the arm rotates around the axial center of the pivoting part, the structure of this solution extends the force arm without changing the length of the arm, and it is more labor-saving when the finger pushes the head end of the arm. Figure 4 As shown, in this example, the pressing block 22 and the pivoting portion 23 are arranged adjacent to each other, which makes the operation of the arm lever more labor-saving.

[0039] For the pivot part, if the side of the arm is convex to form an axis body, the axis body is the pivot part 23, and the end of the pivot part 23 is formed with a plug hole along the axial direction, and the axis body protruding from the cavity wall of the insulating seat 1 is inserted into the plug hole at the pivot part 23 to form a pivot connection. Preferably, a groove is formed at the cavity wall of the insulating seat 1, that is, a pivot groove 103, and the end of the pivot part 23 extends into the pivot groove 103 for pivotal cooperation, which helps to improve the structural stability of the pivot part under the support of the wall of the pivot groove 103. In addition, a notch can be formed at the wall of the pivot groove to facilitate the insertion of the pivot part.

[0040] In order to further improve the stability of the arm rod rotation, in this example, an arc groove for guiding is formed at the side of the conductive terminal portion in the chamber 100, that is, a guide arc groove 424, and the tail end of the arm rod 20 is located in the guide arc groove 424, so that the guide arc groove 424 assists in guiding the arm rod rotation. Specifically, as shown in Figure 2 , Figure 3As shown, the conductive terminal 4 includes a conductive body 42 and a conductive pin 41 connected thereto. The conductive body 42 is located in the cavity of the insulating seat 1. The conductive body 42 includes a front guide piece 421, a rear guide piece 423 and a side guide piece 422 connecting the two. The front guide piece 421 is located at the insertion hole 102. The conductive pin 41 connected to the front guide piece 421 extends from the hole at the hole wall of the insertion hole 102 to the outside of the insulating seat 1. The end of the movable elastic arm 32 abuts against the front guide piece 421 to cooperate with the plug hole 102. The side guide piece 422 is formed at the side of the front guide piece 421, and the top surface of the side guide piece 422 is formed with an arc groove, that is, a guide arc groove 424. The side surface of the rear end of the arm 20 is formed with a pivoting portion 23 protruding outwardly. The bottom wall of the rear end of the arm 20 is also arc-shaped and is located in the guide arc groove 424. The guide arc groove assists the rotation of the arm during the rotation of the arm.

[0041] In addition, the top surface of the side guide piece 422 of the conductive terminal 4 can be bent inward to form a guide arc groove at the formed bending surface. The tail end of the arm and the side pivot part are both in the guide arc groove. Increasing the bending surface helps to increase the contact area, thereby improving the stability of the arm operation.

[0042] Conventional terminals may cause the arm to reset too quickly during use, resulting in hand-hitting. In this case, a bump is added to prevent hand-hitting, such as Figure 3 , Figure 4 As shown, the arm head end 21 extends from the opening slot 101, and a protrusion 6 is formed on the side of the opening slot 101 and adjacent to the seat body wall at the initial position of the arm head end, such as a common arc-shaped protrusion. The protrusion 6 is on the moving path of the arm head end 21, such as the moving path of the convex part of the side of the arm head end. When in use, the arm head end is generally applied with a finger. During the movement of the arm head end to the unlocking position, the arm head end abuts against the protrusion and deforms to pass over the protrusion. When the finger is removed, the movable elastic arm pushes the arm back to the initial position. During the resetting process, the arm head end hits the protrusion 6 to slow down the resetting speed, which helps to reduce the hand-beating phenomenon. In addition, a groove can be formed on the bottom surface of the arm head end 21. During the arm resetting process, the bottom surface of the arm head end first hits the protrusion, and then lifts up until the protrusion is placed in the groove. Under the continued push of the movable elastic arm, the arm head end continues to move, and the groove is separated from the protrusion. Adding a groove helps to better slow down the speed.

[0043] In addition, the width of the slot opening may be limited, such as by guiding the movement of the arm through the slot opening wall, which helps to improve stability.

[0044] When the arm is in the unlocked position, the movable spring arm exerts a large force on the pressing block, which may easily lead to deformation and damage of the pressing block after long-term use. In this case, a support member is added. Figure 4In the state shown, the support member 5 is located at the cavity wall above the lower portion 34 of the movable elastic arm 32 and at one side of the pressing block 22. When the arm 20 rotates to the unlocking position, as shown in FIG. Figure 6 In the figure on the right side of the middle, the pressing block 22 is located above the support member 5, and the movable elastic arm 32 exerts force on the pressing block 22 below ( Figure 6 The support member 5 supports the pressing block 22 (as shown by the middle arrow).

[0045] like Figure 2 , Figure 3 , Figure 4 As shown, the pressing block 22 is located between the pivoting portion 23 at the rear end of the arm 20 and the front end 21 of the arm. Figure 6 When in the unlocked position shown, the end of the support member 5 extends at least to between the pressure block 22 and the pivot portion 23, and the movable elastic arm 32 applies pressure to the pressure block 22. The support member 5 supports the pressure block 22 to prevent the pressure block from deforming. At the same time, the pivot portion 23 also provides auxiliary support to the support member 5, which helps to improve the structural stability of the pressure block.

[0046] Of course, the support member 5 can also extend along the moving path of the pressing block 22, such as Figure 6 The arc-shaped strip shown in the figure supports the pressing block 22 during its movement by the support member 5 , thereby further improving the structural stability of the pressing block.

[0047] As for the support member, it can be fixed on the cavity wall after being independently formed, or as shown in this example, the support member 5 is integrally formed on the cavity wall of the insulating seat, depending on the needs.

[0048] like Figure 6 As shown, when the arm 20 is in the initial position, the broken arm of the movable elastic arm 32 abuts against the conductive terminal at the socket to block the socket. When the finger applies force to push the front end of the arm 20 to move, the pressing block 22 moves synchronously, and the pressing block 22 pushes the movable elastic arm 32 to rotate relative to the bending section. The front end of the arm 20 passes over the anti-beater protrusion 6 to the unlocking position, and the pressing block 22 pushes the movable elastic arm 32 to the predetermined position. The socket blockade is released, and the support member 5 supports the pressing block 22. At this time, the cable can be inserted from the socket to the position where the end of the movable elastic arm 32 abuts against the conductive terminal in the initial position. The external force applied to the front end of the arm by the finger is removed, and the reset movable elastic arm 32 pushes the arm 20 to reset. During the resetting process, the front end of the arm hits the anti-beater protrusion 6 to slow down the speed, and then gradually resets to the initial position, and the corresponding end of the movable elastic arm cooperates with the conductive terminal to clamp the cable.

[0049] The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A handle terminal, comprising an insulating seat (1), a turning member (2), a conductive terminal (4), and a clamping spring (3), wherein the insulating seat (1) is provided with a chamber and an opening groove (101) and a plug hole (102) are provided on the peripheral wall thereof and communicated with the chamber, the clamping spring (3) is provided in the chamber of the insulating seat (1) and the conductive terminal (4) is at least partially located in the chamber (100), the clamping spring (3) comprises a movable spring arm (32), a fixed section (33) and a bending section (31) connecting the two, and the movable spring arm (32) is provided in the initial position. The movable arm (32) cooperates with the conductive terminal (4) at the socket (102) to block the socket (102), the lever (2) comprises an arm (20), a pivoting portion (23), and a pressing block (22), the pivoting portion (23) and the pressing block (22) being arranged at intervals along the length extension direction of the arm (20) in the chamber (100), the arm (20) being pivotally connected to the cavity wall of the chamber (100) through the pivoting portion (23), and the arm head end (21) being located at the opening groove (101), characterized in that: The pivoting portion (23) is located at one side of the movable elastic arm (32) and the movable elastic arm (32) is located on the moving path of the pressing block (22). During the process in which the head end of the force-applying arm causes the movable elastic arm to rotate from the initial position to the unlocking position, the pressing block pushes the movable elastic arm to move relative to the conductive terminal portion at the socket so as to release the blocking of the socket. During the movement of the movable elastic arm, the bending section is deformed synchronously.

2. A handle terminal according to claim 1, characterized in that: The pressing block (22) is located between the pivoting portion (23) and the arm head end portion (21), and the pivoting portion (23) and the pressing block (22) are located on the same side of the arm (20).

3. A handle terminal according to claim 1, characterized in that: A guide arc groove (424) is provided at the side of the conductive terminal (4) in the chamber (100), and the tail end of the arm (20) is located in the guide arc groove (424). The guide arc groove supports the tail end of the arm during its rotation.

4. A handle terminal as claimed in claim 3, characterized in that: The conductive terminal (4) comprises a conductive body (42) and a conductive pin (41) connected thereto, the conductive body (42) being located in a chamber (100) of an insulating seat (1), the conductive body (42) comprising a front guide piece (421), a rear guide piece (423) and a side guide piece (422) connecting the two, the movable elastic arm (32) cooperates with the front guide piece (421) to block the insertion hole (102), and a guide arc groove (424) is provided on the top surface of the side guide piece (422).

5. A handle terminal as claimed in claim 3, characterized in that: The top surface of the side guide piece (422) of the conductive terminal (4) is bent, and a guide arc groove (424) is formed on the bent surface.

6. A handle terminal according to claim 1, characterized in that: The head end of the arm rod extends out from the opening slot, and a protrusion for preventing hitters is arranged on the side of the opening slot and on the shell wall adjacent to the initial position of the head end of the arm rod. The protrusion is on the moving path of the head end of the arm rod. When the movable elastic arm pushes the arm rod to return to the initial position, the head end of the arm rod hits the protrusion to slow down the return speed.

7. A handle terminal according to claim 1, characterized in that: A shaft body is formed protruding outwardly on the side surface of the tail end of the arm rod (20), and the shaft body is used as a pivot part (23). A pivot groove (103) is arranged on the cavity wall of the cavity (100), and the end of the shaft body extends into the pivot groove to form a pivot connection.

8. A handle terminal according to any one of claims 1 to 7, characterized in that: It also includes a support member (5), which is located at the cavity wall above the movable elastic arm (32) and at one side of the pressing block (22). When the arm rod (20) rotates to the unlocking position, the support member (5) supports the pressing block (22) in the direction of the force applied by the movable elastic arm (32) to the pressing block (22).

9. A handle terminal according to claim 8, characterized in that: When the arm (20) rotates to the unlocking position, the support member (5) is at least partially located between the pivoting portion (23) and the pressing block (22), so that the portion of the support member located between the two supports the pressing block.

10. A handle terminal according to claim 8, characterized in that: The support member (5) is integrally formed on the cavity wall of the chamber (100), and the support member (5) extends along the moving path of the pressing block (22). The support member supports the pressing block during its movement.

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