Handle terminal

Abstract

Disclosed in the present invention is a handle terminal, comprising insulating bases, trigger members, conductive terminals, and clamping elastic members. In the process of enabling the head end portion of each force-applying arm lever to rotate from an initial position to an unlocking position, a corresponding pressing block pushes a corresponding movable elastic arm to move relative to the conductive terminal part at a corresponding insertion hole so as to remove the locking of the insertion hole, and a corresponding bending section is synchronously deformed during the movement of the movable elastic arm. In the present solution, the structure of the handle terminal is redesigned, each pivoting portion is placed on one side of the corresponding movable elastic arm, and this structure facilitates the increase of the length of each force arm, so that the operation of the arm levers is more labor-saving.

Description

A type of handle terminal Technical Field

[0001] This invention relates to the field of wiring device technology, and more specifically to a handle terminal. Background Technology

[0002] Terminal blocks are widely used in mechanical engineering. A common structure is a combination of an insulating base, a conductive terminal, a handle (also known as a lever), 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 insertion hole on the insulating base. The insertion hole is used for inserting cables, etc. By rotating the handle, the pressure block pushes the movable spring arm to move and release the blockage of the insertion hole. Then, cables, etc. can be inserted into the insertion hole. After the movable spring arm returns to its original position, a clamping action is formed. The specific solution disclosed in patent CN214898904U is as follows. The drawback is that the pivot center of the handle is located between the handle tip and the pressure block, and the pivot center is located in the ring of the bent section of the clamping spring. The lever arm is relatively short, and a large force is required to operate the handle, which is inconvenient to use and needs to be improved. Summary of the Invention

[0003] To address at least one of the aforementioned technical deficiencies, the present invention provides the following technical solution:

[0004] This application discloses a handle terminal, including an insulating base, a lever, a conductive terminal, and a clamping spring. The insulating base has a cavity, and its peripheral wall has an opening slot and a socket communicating with the cavity. The clamping spring is disposed in the cavity of the insulating base, and the conductive terminal is at least partially located in the cavity. The clamping spring has a movable spring arm, a fixed section, and a bent section connecting the two. In its initial position, the movable spring arm cooperates with the conductive terminal at the socket to seal the socket. The lever has an arm, a pivot part, and a pressing block, and is located in the cavity. The arm in the room is provided with pivot joints and pressure blocks at intervals along its length. The arm is pivotally connected to the cavity wall of the chamber through the pivot joints, and the first end of the arm is located at the opening slot. The pivot joint is located on one side of the movable spring arm, and the movable spring arm is located on the moving path of the pressure block. During the process of applying force to rotate the first end of the arm from the initial position to the unlocked position, the pressure block pushes the conductive terminal part of the movable spring arm relative to the socket to move so as to release the lock of the socket. During the movement of the movable spring arm, the bending section is deformed simultaneously.

[0005] In this design, the structure of the handle terminal is redesigned, and the pivot is placed on one side of the movable spring arm. This structure helps to extend the length of the lever arm, making it easier to operate the arm.

[0006] When using this handle terminal, if the movable spring arm in its initial position extends into the socket and its end abuts against the conductive terminal portion of the socket, the movable spring arm blocks the socket, thus sealing it. Applying force to the end of the arm at the opening slot causes the lever to rotate, simultaneously causing the pressure block to push the movable spring arm, causing its end to gradually move away from the conductive terminal portion of the socket. The movable spring arm then releases its blockage of the socket, thus removing the seal. At this point, cables can be inserted into the socket until the end of the movable spring arm abuts against the conductive terminal portion of the socket. After the external force is removed, the bent section returns to its original position, simultaneously resetting the movable spring arm. The reset movable spring arm pushes the pressure block back to its original position, simultaneously resetting the arm. The reset movable spring arm end engages with the conductive terminal portion of the socket to clamp the cable between them. This handle terminal is easy to operate.

[0007] Regarding the position of the pivot joint, it can be on the same side as the pressure block or on opposite sides, or it can be located between the pressure block and the end of the boom. The distance between the pivot joint and the pressure block can be selected according to requirements; a closer distance between the pivot joint and the pressure block requires less effort.

[0008] Preferably, the pressing block is located between the pivot and the first end of the arm, and the pivot and the pressing block are on the same side of the arm. The pressing block being located between the pivot and the arm helps to extend the lever arm, making operation easier. The layout of the pressing block and the pivot being on the same side helps to cooperate with the clamping spring and facilitates rapid assembly.

[0009] Furthermore, a guide arc groove is provided on the side of the conductive terminal portion within the cavity, and the tail end of the arm is located in the guide arc groove. During the rotation of the tail end of the arm, the guide arc groove supports the tail end of the arm. Increasing the guide arc groove assists in guiding the rotation of the arm and helps improve the stability of the structure.

[0010] For conductive terminals, the structure can be selected according to requirements. The conductive terminals can be entirely or partially located within the insulating base cavity. Preferably, the conductive terminal includes a conductive body and conductive pins connected thereto. The conductive body is located within the cavity of the insulating base. The conductive body includes a front guide plate, a rear guide plate, and a side guide plate connecting the two. The movable spring arm cooperates with the front guide plate to seal the insertion hole. A guide arc groove is provided on the top surface of the side guide plate. The conductive pins can be located within the cavity or extend from the cavity. A guide groove is formed on the side guide plate to facilitate cooperation with the arm, which helps simplify the structure.

[0011] Furthermore, the top surface of the side guide plate of the conductive terminal is bent and a guide arc groove is formed at the bent surface. Increasing the bent surface helps to increase the contact area with the tail end of the arm and the pivot, thereby further improving the stability of the structure.

[0012] Furthermore, the arm's head extends out of the opening slot, and a protrusion for preventing hand strikes is provided on the side of the opening slot and on the housing wall adjacent to the initial position of the arm's head. The protrusion is located on the movement path of the arm's head. During the process of the movable spring arm pushing the arm back to the initial position, the arm's head strikes the protrusion to slow down the reset speed.

[0013] In general, force is applied to the end of the lever with the fingers. When the fingers are removed, the movable spring pushes the lever back to its original position quickly. If the fingers are removed too slowly, the hand is easily hit by the end of the lever. To address this, this design adds a protrusion along the movement path of the end of the lever. As the end of the lever moves to the unlocked position, it abuts against the protrusion and deforms to pass over it. During the return to its original position, the end of the lever hits the protrusion, which slows down the movement and reduces the risk of being hit, making it safer to use.

[0014] For pivot joints, a pivot joint structure can be selected based on requirements, such as a shaft protruding outward from the side of the boom to be inserted into a slot in the cavity wall to form a pivot connection, or a shaft hole formed on the side of the boom to facilitate the insertion of the shaft into the cavity wall to form a pivot connection, or a shaft protruding outward from the side of the boom with the shaft as the pivot joint and an axial insertion hole formed at the end of the shaft to allow the shaft into the cavity wall to form a pivot connection.

[0015] Preferably, the arm has a convex shaft on its tail end side, which serves as a pivot joint. A pivot groove is provided on the cavity wall of the chamber, and the end of the shaft extends into the pivot groove to form a pivot connection. The convex shaft forming the pivot joint makes assembly easier, and the support of the pivot groove wall helps to further improve the structural stability of the pivot joint.

[0016] Furthermore, it also includes a support member located on the cavity wall above the movable spring arm and on the side of the pressing block. When the arm rotates to the unlocked position, the support member provides support to the pressing block in the direction of the force exerted by the movable spring arm on the pressing block.

[0017] When in the unlocked position, the movable spring arm applies a large force to the pressure block, which can easily cause the pressure block to deform or break. To address this, a support component is added to assist in supporting the pressure block. This structure increases the structural stability of the pressure block and helps extend the service life of the handle terminal.

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

[0019] The support component can be either molded independently and fixed to the cavity wall, or integrally molded on the cavity wall of the insulating seat, depending on the requirements.

[0020] Furthermore, the support member is integrally formed on the cavity wall of the chamber. The support member extends along the moving path of the pressing block. During the movement of the pressing block, the supporting member supports the pressing block. The support member extends along the moving path of the pressing block, and the two are parallel. Thus, during the movement of the pressing block, the supporting member supports the pressing block throughout the entire process, which helps to improve the structural stability of the pressing block.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. The present invention improves the position of the pivot, which helps to extend the lever arm and makes operation easier.

[0023] 2. The present invention adds a support member to support the pressure block, which helps to improve the structural stability of the pressure block and extend the service life of the terminal. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0026] Figure 2 is a schematic diagram of the structure after removing the cover plate in Figure 1;

[0027] Figure 3 is a schematic diagram of the structure in Figure 1 after removing the rotating component;

[0028] Figure 4 is a schematic cross-sectional view of the terminal of this handle in Embodiment 1;

[0029] Figure 5 is a schematic diagram of the structure of the rotating component in Embodiment 1;

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

[0031] The attached figures are labeled as follows:

[0032] 1. Insulating base; 2. Turning component; 3. Clamping spring; 4. Conductive terminal; 5. Support component; 6. Protrusion; 20. Arm; 21. Arm head end; 22. Pressing block; 23. Pivot joint; 31. Bending section; 32. Movable spring arm; 33. Fixed section; 34. Lower part; 41. Guide foot; 42. Conductive body; 100. Chamber; 101. Opening slot; 102. Insertion hole; 103. Pivot slot; 104. Cover plate; 421. Front guide plate; 422. Side guide plate; 423. Rear blade; 424. Guide arc groove. Embodiments of the present invention

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

[0034] Example 1

[0035] In this example, a handle terminal includes an insulating base 1, a lever 2, a conductive terminal 4, and a clamping spring 3. Common configurations of the insulating base include a single rectangular base with a pre-formed cavity inside, and the side opening of the base is closed by a cover plate 104. Alternatively, as shown in Figures 1 and 2, multiple bases are arranged side by side with the side openings of the bases closed by the cover plate 104, and the side openings of the bases are used to install internal components.

[0036] The insulating base has an opening groove and a socket formed on its peripheral wall that communicate with the cavity. The cable is inserted through the socket. The opening groove and the socket are on the same side or adjacent side, as shown in Figures 1 and 2. The opening groove 101 and the socket 102 are located on adjacent surfaces of the insulating base 1. A clamping spring 3 is installed in the cavity 100 of the base. The conductive terminal 4 is at least partially located in the cavity 100 to connect the cable. The clamping spring 3 includes a movable spring arm 32, a fixed section 33, and a bent section 31 connecting the two, as shown in Figures 4 and 3. The clamping spring is U-shaped. In the initial position, the end of the movable spring arm 32 abuts against the conductive terminal 4 at the socket 102, thereby blocking the socket 102 and forming a seal. The common installation structure of the clamping spring is shown in Figures 4 and 3. When docking into the seat cavity 100, the bent section 31 is sleeved on the convex shaft formed on the cavity wall, and the fixed section is connected to the conductive terminal part in the cavity.

[0037] The lever 2 has an arm 20, a pivot 23, and a pressing block 22. The tail end of the arm 20 is located in the seat cavity 100 of the insulating seat 1, and the head end of the arm 20 is located at the opening slot or extends out from the opening slot 101 as shown in Figure 1. The configuration of the head end 21 of the arm can be selected according to the requirements. As shown in Figures 1, 2, and 5, the head end 21 of the arm protrudes outward on the side to increase the contact area with the fingers. Several protrusions can also be formed on the top surface of the head end 21 of the arm to facilitate force application.

[0038] As shown in Figures 2, 4, and 5, a pivot joint 23 and a pressing block 22 are formed at intervals along the length of the arm 20 located within the chamber 100. In this example, the pressing block 22 is located between the pivot joint 23 and the end portion 21 of the arm. The pressing block 22 and the pivot joint 23 are on the same side of the arm 20, and both the pivot joint 23 and the pressing block 22 are located on one side of the movable spring arm 32. In the state shown in Figure 4, both the pivot joint 23 and the pressing block 22 are located at the lower part 34 of the movable spring arm 32. Above, the arm 20 is pivotally connected to the cavity wall of the insulating seat 1 via a pivot joint 23. The pivot joint 23 is spaced apart from the bent section 31 of the clamping spring 3. The movable spring arm 32 is located on the moving path of the pressing block 22. Compared with the scheme disclosed in CN214898904U where the pivot joint is located at the annular opening of the bent section of the clamping spring, this scheme extends the lever arm without changing the arm length when the arm rotates around the axial center of the pivot joint, making it easier to push the end of the arm with a finger. As shown in Figure 4, in this example, the pressing block 22 and the pivot joint 23 are placed close together, making the operation of the arm easier.

[0039] For the pivot joint, for example, the side of the arm protrudes outward to form a shaft, with the shaft serving as the pivot joint 23. An insertion hole is formed along the axial direction at the end of the pivot joint 23. The shaft, protruding from the cavity wall of the insulating seat 1, is inserted into the insertion hole of the pivot joint 23 to form a pivotal connection. Preferably, a groove, i.e., a pivot groove 103, is formed in the cavity wall of the insulating seat 1. The end of the pivot joint 23 extends into the pivot groove 103 for pivotal engagement. The support of the groove wall of the pivot groove 103 helps improve the structural stability of the pivot joint. Furthermore, a notch can be formed in the groove wall of the pivot groove to facilitate the insertion of the pivot joint.

[0040] To further improve the stability of the arm rotation, in this example, an arc-shaped groove for guidance, namely guide arc groove 424, is formed on the side of the conductive terminal portion inside the chamber 100. The tail end of the arm 20 is located in the guide arc groove 424, which assists in guiding the arm rotation. Specifically, as shown in Figures 2 and 3, the conductive terminal 4 includes a conductive body 42 and a connecting pin 41 connected thereto. The conductive body 42 is located inside the cavity of the insulating base 1. The conductive body 42 includes a front guide plate 421, a rear guide plate 423, and a side guide plate 422 connecting the two. The front guide plate 421 is located at the insertion hole 102. The connecting pin 41 connected to the front guide plate 421 extends from the hole in the wall of the insertion hole 102 to the outside of the insulating base 1. The end of the movable spring arm 32 abuts against the front guide plate 421 to cooperate and seal the insertion hole 102. A side guide plate 422 is formed on the side of the front guide plate 421, and an arc groove, i.e. a guide arc groove 424, is formed on the top surface of the side guide plate 422. The side of the tail end of the arm 20 is formed by a pivot part 23. The bottom wall of the tail end of the arm 20 is also arc-shaped and is located in the guide arc groove 424. During the rotation of the arm, the guide arc groove assists in guiding the rotation of the arm.

[0041] In addition, the top surface of the side guide plate 422 of the conductive terminal 4 can be bent inward and a guide arc groove can be formed at the bent 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] During use, conventional terminals may experience hand-striking due to excessively rapid arm reset. To address this, this example incorporates a protrusion to prevent hand-striking, as shown in Figures 3 and 4. The arm's end portion 21 extends from the opening slot 101, and a protrusion 6, similar to a common arc-shaped protrusion, protrudes outward from the side of the opening slot 101 and adjacent to the initial position of the arm's end portion on the seat wall. The protrusion 6 is positioned along the movement path of the arm's end portion 21, such as along the movement path of the outwardly protruding portion on the side of the arm's end portion. During use, force is typically applied to the arm's end portion with a finger. As the arm's end portion moves to the unlocked position, it abuts against the protrusion and deforms to pass over it. When the finger is removed, the movable spring arm pushes the arm back to its initial position. During the reset process, the arm's end portion strikes the protrusion 6 to slow down the reset speed, thus reducing hand-striking. In addition, a groove can be formed on the bottom surface of the boom end 21. During the boom reset process, the bottom surface of the boom end first strikes the protrusion, and then rises until the protrusion is placed in the groove. Under the continued push of the movable spring arm, the boom end continues to move, and the groove separates from the protrusion. Adding the groove helps to better slow down the speed.

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

[0044] When the arm is in the unlocked position, the force exerted by the movable spring arm on the pressing block is relatively large, which can easily lead to deformation and damage of the pressing block under long-term use. To address this, a support member is added in this example. As shown in Figure 4, the support member 5 is located on the cavity wall above the lower part 34 of the movable spring arm 32 and is on one side of the pressing block 22. When the arm 20 rotates to the unlocked position, as shown on the right side of Figure 6, the pressing block 22 is above the support member 5. The support member 5 provides support to the pressing block 22 in the direction of the force exerted by the movable spring arm 32 on the pressing block 22 below (as indicated by the arrow in Figure 6).

[0045] As shown in Figures 2, 3, and 4, the pressure block 22 is located between the pivot joint 23 at the tail end of the arm 20 and the head end 21 of the arm. In the unlocked position shown in Figure 6, the end of the support member 5 extends at least between the pressure block 22 and the pivot joint 23. The movable spring arm 32 applies pressure to the pressure block 22, and the support member 5 supports the pressure block 22 to prevent deformation of the pressure block. At the same time, the pivot joint 23 also provides auxiliary support to the support member 5. The combination of these factors helps to improve the structural stability of the pressure block.

[0046] Of course, the support member 5 can also be extended along the moving path of the pressing block 22, as shown in the arc-shaped strip in Figure 6. During the movement of the pressing block 22, the support member 5 supports the pressing block throughout the entire process, further improving the structural stability of the pressing block.

[0047] For the support component, it can be molded independently and fixed to the cavity wall, or, as shown in this example, the support component 5 can be integrally molded on the cavity wall of the insulating base, depending on the requirements.

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

[0049] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A handle terminal, comprising an insulating base (1), a lever (2), a conductive terminal (4), and a clamping spring (3), wherein the insulating base (1) has a cavity and an opening slot (101) and a socket (102) communicating with the cavity are provided on its peripheral wall; the clamping spring (3) is provided in the cavity of the insulating base (1) and the conductive terminal (4) is at least partially located in the cavity (100); the clamping spring (3) has a movable spring arm (32), a fixed section (33), and a bent section (31) connecting the two; the movable spring arm (32) in the initial position is a movable spring arm (33). The movable arm (32) partially engages with the conductive terminal (4) at the socket (102) to seal the socket (102). The rotating member (2) includes an arm (20), a pivot (23), and a pressing block (22). The arm (20) located in the chamber (100) has the pivot (23) and the pressing block (22) spaced apart along its length. The arm (20) is pivotally connected to the wall of the chamber (100) through the pivot (23), and the first end (21) of the arm is located at the opening slot (101). The characteristic of this feature is that... The pivot (23) is located on one side of the movable spring arm (32) and the movable spring arm (32) is on the moving path of the pressing block (22). During the process of rotating the end of the force arm from the initial position to the unlocked position, the pressing block pushes the conductive terminal part of the movable spring arm relative to the socket to move so that the socket is unlocked. During the movement of the movable spring arm, the bending section is deformed simultaneously.

2. A handle terminal as described in claim 1, characterized in that: The pressing block (22) is located between the pivot (23) and the first end of the arm (21), and the pivot (23) and the pressing block (22) are on the same side of the arm (20).

3. A handle terminal as described in claim 1, characterized in that: A guide arc groove (424) is provided on the side of the conductive terminal (4) in the chamber (100), and the tail end of the arm (20) is in the guide arc groove (424). During the rotation of the tail end of the arm, the guide arc groove supports the tail end of the arm.

4. A handle terminal as described in claim 3, characterized in that: 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 (100) of the insulating base (1). The conductive body (42) includes a front guide plate (421), a rear guide plate (423) and a side guide plate (422) connecting the two. The movable spring arm (32) cooperates with the front guide plate (421) to block the socket (102). A guide arc groove (424) is provided on the top surface of the side guide plate (422).

5. A handle terminal as described in claim 3, characterized in that: The conductive terminal (4) has a guide groove (424) formed at the top surface of the side guide piece (422) bent.

6. A handle terminal as described in claim 1, characterized in that: The arm's head extends out of the opening slot. A protrusion for preventing hand strikes is provided on the side of the opening slot and on the housing wall adjacent to the initial position of the arm's head. The protrusion is located on the movement path of the arm's head. During the process of the movable spring arm pushing the arm back to the initial position, the arm's head strikes the protrusion to slow down the reset speed.

7. A handle terminal as described in claim 1, characterized in that: The arm (20) has a convex shaft at the tail end side, with the shaft as the pivot (23). A pivot groove (103) is provided on the cavity wall of the chamber (100), and the end of the shaft extends into the pivot groove to form a pivot connection.

8. A handle terminal as described in any one of claims 1-7, characterized in that: It also includes a support member (5), which is located on the cavity wall above the movable spring arm (32) and on the side of the pressing block (22). When the arm (20) is rotated to the unlock position, the support member (5) provides support to the pressing block (22) in the direction of the force exerted by the movable spring arm (32) on the pressing block (22).

9. A handle terminal as described in claim 8, characterized in that: When the arm (20) is rotated to the unlocked position, the support (5) is at least partially located between the pivot (23) and the pressure block (22), so that the support portion located between the two provides support to the pressure block.

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

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