CN112117554A - a connecting device - Google Patents

Abstract

The invention relates to the technical field of electric power equipment maintenance tools, in particular to a connecting device which comprises a chuck seat and a sliding block, wherein a static chuck is arranged at the upper end of the chuck seat, a guide hole is formed in the lower end of the chuck seat, the sliding block penetrates through the guide hole and can slide in a reciprocating manner, a movable chuck is connected with the upper end of the sliding block, the movable chuck and the static chuck can be matched with a clamped object, a through hole is formed in the sliding block in the axial direction, a screw rod is arranged in the through hole, the upper end of the screw rod is rotatably connected with the sliding block, a locking key is hinged to the side wall of the chuck seat, a locking thread is arranged on one side, facing the screw rod, of the upper end of the locking key, and a locking key spring is arranged between the lower end of the; the connecting device has the advantages of convenient operation, firm and reliable connection, simple and small structure and suitability for construction in narrow space, and can greatly shorten the operation time for connecting or loosening a clamped object.

Description

a connecting device

technical field

The invention relates to the technical field of power equipment maintenance tools, in particular to a connecting device.

Background technique

In recent years, people have higher and higher requirements for the reliability of power supply. Power companies are shortening construction and emergency repair time by various methods to ensure continuous power supply to customers. In the construction of power systems, connecting devices are often used to repair wires or wiring. There are two types of connection devices commonly used at present: screw compression type and spring compression type, each of which has its own advantages and disadvantages. The screw pressing contact surface is fast and reliable, but the operation time is long. The spring compression type greatly shortens the operation time, but due to the aging of the spring, there will be a problem that the contact surface is not fastened and reliable. Therefore, many connection devices currently use the screw compression type, but in this way, the operator rotates the insulating rod, so that the wire clamp part of the connection device moves up with the bolt to clamp the wire. 8CM, whether it is the operation process of tightening the wire clip to clamp the wire or the operation process of loosening the wire clip to withdraw the wire, the time for rotating, tightening or loosening is too long, and nearly half of the line spacing is invalid stroke, which leads to the use of screw The maintenance operators of the pressing connection device are labor-intensive, very inconvenient, and the assembly and disassembly efficiency is low and time-consuming and labor-intensive.

SUMMARY OF THE INVENTION

In order to solve the above problems, the task of the present invention is to provide a connecting device with convenient operation, firm and reliable connection, which can greatly shorten the operation time of connecting or loosening the clamped object, and has a simple and compact structure, which is suitable for construction in narrow spaces.

The task of the present invention is achieved through the following technical solutions:

A connecting device includes a collet seat and a non-circular cross-section sliding block, the upper end of the collet seat is provided with a static collet, the lower end of the collet seat is provided with a guide hole for matching the sliding block, and the sliding block passes through the sliding block. The upper end of the slider is connected with a movable chuck, and the movable chuck and the static chuck can cooperate to clamp objects. The slider is provided with a through hole along the axial direction, and the through hole is provided with a through hole. There is a screw, the upper end of the screw is rotatably connected with the slider, the lower end of the screw is provided with a driving structure for driving the movement of the screw, the side wall of the slider is provided with a long guide groove at the position corresponding to the screw, and the chuck seat is provided with a long guide groove. There is an accommodating groove at the position of the side wall corresponding to the guide groove, and a locking key is arranged in the accommodating groove. The upper end of the locking key is the locking end, and the lower end is the unlocking end. The locking key is hinged and hinged with the side wall of the accommodating groove. The point is located between the locking end and the unlocking end. The locking end facing the screw is provided with locking threads that match the screw threads of the screw. The unlocking end and the chuck seat are elastically connected by a locking spring. The locking spring The elastic force makes the locking end of the locking key deflect toward the screw in a natural state and can engage with the screw thread through the guide groove.

Preferably, the connecting device further comprises a return spring, one end of the return spring is connected to the movable chuck, the slider or the driving structure, and the other end is connected to the chuck seat, and the return spring is opposite to the movable chuck, the slider Or the drive structure exerts a restoring force and the restoring force is directed away from the static chuck.

Preferably, the movable collet and the static collet are mutually matched concave arc-shaped wire clamping structures or duckbill type wire clamping structures.

Preferably, the collet base is made of conductive material, and a wiring structure for connecting lead wires is further provided on the collet base, so that the lead wires can be electrically connected to the object to be clamped.

Preferably, the wiring structure includes a wiring portion arranged on the chuck seat, the wiring portion is provided with a screw hole and a locking bolt that matches the screw hole, and the lead wire or the wiring of the lead wire can be connected by the locking bolt. The terminal is fixedly connected to the collet holder.

When the thread of the screw and the locking thread of the key are not tightened: push the screw and the slider upward, the thread of the screw can push the locking end of the key to overcome the elastic force of the key spring and deflect outward. Therefore, the locking thread of the lock key will not restrict the upward sliding of the screw rod, so that the movable collet can move to the static collet and clamp the cable; on the screw, and the lock key cannot continue to deflect inward, so the locking screw of the lock key is embedded in the screw screw to limit the downward sliding of the screw, that is, in the natural state, the screw and the slider can only move upward but not Move downward; when the unlocking end of the lock key is driven by an external force to deflect outward against the elastic force of the spring, the locking thread of the lock key is disengaged from the screw thread of the screw, and the slide bar can slide down freely, and in the In the case of setting the return spring, the screw rod and the slider can automatically move downward and reset under the action of the restoring force of the return spring, so that the movable chuck and the static chuck are automatically disengaged.

When the screw is rotated in the forward direction so that the screw thread and the locking thread of the lock key are in a tightened state: the screw advance of the screw can make the movable chuck move towards the static chuck to clamp the object, and the screw thread and the lock key are locked. The friction force of the locking teeth in the screwed state can lock the lock key and limit the outward deflection of the lock key.

When connecting the wires, the operator holds the chuck seat with one hand and the driving structure with the other hand, firstly pushes the driving structure upwards directly so that the movable chuck at the top of the slider cooperates with the static chuck to clamp the wire, and then rotates forward. The driving structure tightens the screw thread and the locking thread of the lock key, thereby further driving the movable collet to move toward the static collet to clamp the wire, that is, only two steps are needed to realize the clamping connection of the wire. Moreover, at this time, the friction force between the screw thread and the locking thread of the locking key in the tightened state can lock the locking key and limit the outward deflection of the locking key, and can also effectively prevent the locking key from being accidentally opened and lead to accidental disconnection of the wire. open.

In the operation of loosening the wire, firstly rotate the drive structure in reverse to loosen the screw thread of the screw and the locking thread of the lock key, and then press the unlocking end of the lock key. At this time, under the action of the return spring, the slider It can move down automatically and quickly, so that the movable collet and the static collet are automatically disengaged and the cable is released, that is, the release of the wire can be realized in only two steps. The gap between the openings reaches the maximum, which is convenient for the exit of the wire and the entry of the wire in the next operation.

Compared with the prior art, the beneficial effects of the connecting device of the present invention are as follows: (1) When in use, the operator can hold the chuck seat and the driving structure, that is, the operator can quickly manipulate the movable chuck to move relative to the static chuck to clamp or loosen the wire; The structure is simple and compact, which is suitable for construction in narrow spaces, such as clamping the terminal block in the distribution box; ② While taking into account the advantages of screw-pressed contact surface tightening and reliability, the time for rotating tightening or loosening is greatly shortened , The opening stroke between the static collet and the movable collet is mainly completed by the sliding movement of the slider, and only a short stroke of tightening and loosening is completed by the helical movement of the rotating slider. The operation is convenient and convenient, and the connecting wire is firm and reliable. It can greatly shorten the operation time of connecting or loosening the wire, thereby greatly improving the connection efficiency; ③ Set the return spring, when releasing the wire, just press the unlocking end of the lock key, and the return spring can drive the slider to automatically and quickly move to the Sliding down further increases the operation efficiency and portability, and the return spring automatically drives the opening distance between the driving chuck and the static chuck to the maximum, which is convenient for the withdrawal of the wire and the entry of the wire in the next operation.

Description of drawings

Fig. 1 is the structural representation of the connecting device of the present invention;

Fig. 2 is the internal structure schematic diagram of Fig. 1;

Fig. 3 is the exploded structure schematic diagram of Fig. 1;

FIG. 4 is a schematic diagram of the reference structure of the connection device of the present invention in use state.

Among them, the collet seat 1, the static collet 11, the guide hole 12, the accommodating groove 13, the wiring part 14, the screw hole 141, the locking bolt 142, the slider 2, the through hole 21, the guide groove 22, the movable collet 3 , Screw 4, knob 5, lock key 6, lock end 61, lock screw 611, unlock end 62, lock key spring 7, return spring 8, lead wire 9, terminal 91.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly fixed to the other element or intervening elements may also exist. When an element is referred to as being "connected" to another element, it can be Connections can be made directly to another element or indirectly through an intervening element. Additionally, the terms "upper," "lower," "top," "bottom," and similar expressions used herein are for illustration purposes only and do not represent the only embodiments.

As shown in Figures 1-4, the connecting device includes a collet base 1 and a slider 2 with a square cross-section. The upper end of the collet base 1 is provided with a static collet 11, and the lower end of the collet base 1 is provided with a matching The guide hole 12 of the slider 2, the slider 2 passes through the guide hole 12 and can slide back and forth in it but cannot rotate, the upper end of the slider 2 is connected with a movable chuck 3, and the movable chuck 3 and the static chuck 11 are matched with each other The concave arc-shaped wire clamping structure can cooperate with the clamping wire (the wire of the cable to be repaired). The slider 2 is provided with a through hole 21 in the axial direction. For rotatable connection, the lower end of the screw rod 4 protrudes from the through hole 21 and is provided with a knob 5 for driving the movement of the screw rod 4, and a long guide groove 22 is provided on the side wall of the slider 2 corresponding to the position of the screw rod 4. The side wall of the seat 1 is provided with an accommodating groove 13 at the position corresponding to the guide groove 22. The accommodating groove 13 is provided with a locking key 6. The upper end of the locking key 6 is the locking end 61, and the lower end is the unlocking end 62. 6 is hinged to the side wall of the accommodating slot 13 and the hinge point is located between the locking end 61 and the unlocking end 62, the locking end 61 facing the screw 4 is provided with a locking screw 611 matching the screw of the screw 4, unlocking The end 62 and the bottom of the accommodating groove 13 are elastically connected by the locking spring 7. The elastic force of the locking spring 7 makes the locking end 61 of the locking key 6 deflect toward the screw 4 in a natural state and can pass through the guide groove 22 and the screw. The screw 4 is thread-engaged. A reset spring 8 is also connected between the movable collet 3 and the collet seat 1. The upper and lower ends of the reset spring 8 are respectively hung on the sides of the movable collet 3 and the collet seat 1 through hooks. The reset spring 8 is pre-stretched. The spring, therefore, exerts a downward restoring force on the movable collet 3 , that is, the restoring force is directed away from the static collet 11 . Both the movable collet 3 and the collet base 1 are made of conductive materials, and the collet base 1 is also provided with a wiring structure for connecting the lead wires 9 (such as emergency power supply wires and ground wires), so that the lead wires 9 can be connected to the ground wire. The clipped object makes a conductive connection. The wiring structure includes a wiring portion 14 arranged on the collet base 1 , the wiring portion 14 is provided with a screw hole 141 and a locking bolt 142 matching the screw hole 141 , and the terminal 91 of the lead wire 9 can be fixed by the locking bolt 142 Connected to the collet holder 1. When the movable collet 3 and the static collet 11 cooperate to clamp the wire, the conductive connection between the lead wire 9 and the wire is realized.

When the threads of the screw 4 and the locking threads 611 of the lock key 6 are not tightened: push the screw 4 and the slider 2 upward, the threads of the screw 4 can push the locking end 61 of the lock key 6 to overcome the lock key The elastic force of the spring 7 is deflected outward, so that the locking screw 611 of the lock key 6 will not restrict the upward sliding of the screw rod 4, so that the movable collet 3 can move to the static collet 11 and cooperate to clamp the cable; The locking thread 611 of 6 is pressed against the screw 4 under the action of the locking spring 7, and the locking key 6 cannot continue to deflect inwards, so the locking thread 611 of the locking key 6 is stuck in the thread of the screw 4 so as to It can limit the downward sliding of the screw 4, that is, in the natural state, the screw 4 and the slider 2 can only move upwards and cannot move downward; when the unlocking end 62 of the lock key 6 is driven by an external force, the lock key 6 overcomes the elastic force of the spring and moves outwards. When deflected, the locking thread 611 of the lock key 6 is disengaged from the thread of the screw rod 4, and the sliding rod can slide down freely. Under the action of the restoring force, it automatically moves downward and resets, so that the movable chuck 3 and the static chuck 11 are automatically disengaged.

When the screw 4 is rotated in the forward direction so that the screw 4 and the locking screw 611 of the lock key 6 are in a tightened state: the screw advance of the screw 4 can make the movable chuck 3 move towards the static chuck 11 to clamp the object, and the screw The friction force between the 4 threads and the locking threads 611 of the lock key 6 in the screwed state can lock the lock key 6 and limit the outward deflection of the lock key 6 .

When connecting the wires, the operator holds the chuck base 1 with one hand and the knob 5 with the other hand, and firstly pushes the knob 5 upwards directly so that the movable chuck 3 at the top of the slider 2 cooperates with the static chuck 11 to clamp the wires. Then turn the knob 5 in the forward direction to tighten the screw threads of the screw 4 and the locking threads 611 of the lock key 6, thereby further driving the movable collet 3 to move toward the static collet 11 to clamp the wire, that is, only two steps are required to achieve Clamped connection to the conductor. Moreover, at this time, the frictional force between the threads of the screw 4 and the locking threads 611 of the lock key 6 in the tightened state can lock the lock key 6 and limit the outward deflection of the lock key 6, and can also effectively prevent the lock key 6 from accidentally open and lead to accidental disconnection.

When performing the operation of loosening the wire, firstly rotate the knob 5 in reverse to loosen the threads of the screw 4 and the locking threads 611 of the locking key 6, and then press the unlocking end 62 of the locking key. Under the action, the slider 2 can move down automatically and quickly, so that the movable chuck 3 and the static chuck 11 are automatically disconnected and the cable is released, that is, the release of the wire can be realized in only two steps, and at this time The opening distance between the static collet 11 and the movable collet 3 is maximized, which facilitates the withdrawal of the wire and the entry of the wire in the next operation.

When using the connecting device of the present invention, the operator can hold the collet holder 1 and the knob 5, and then can manipulate the movable collet 3 to move relative to the static collet 11 to clamp or loosen the wire. The structure is simple and compact, and is suitable for construction in narrow spaces. , When the static collet and the movable collet are designed in duckbill shape, it is especially suitable for clamping the terminal block in the distribution box, the operation is fast and fast, and the clamping is firm; taking into account the screw-pressed contact surface tightening and reliable At the same time, the time of rotating tightening or loosening is greatly shortened. The opening stroke between the static collet 11 and the movable collet 3 is mainly completed by the sliding movement of the slider 2, and only a short stroke of tightening and loosening. It is completed by the helical movement of the rotating slider 2, the operation is convenient and convenient, and the connecting wire is firm and reliable, which can greatly shorten the operation time of connecting or loosening the wire, thereby greatly improving the connection efficiency; set the return spring 8, when loosening the wire, only It is necessary to press the unlocking end 62 of the lock key, and the reset spring 8 can drive the slider 2 to slide down automatically and rapidly, which further increases the operation efficiency and portability, and the reset spring 8 automatically drives the connection between the movable collet 3 and the static collet 11. The gap between the openings reaches the maximum, which is convenient for the exit of the wire and the entry of the wire in the next operation.

The above description is only a preferred embodiment of the present application and an illustration of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solution formed by the specific combination of the above-mentioned technical features, and should also cover the above-mentioned technical features without departing from the inventive concept. Other technical solutions formed by any combination of its equivalent features. For example, a technical solution is formed by replacing the above-mentioned features with the technical features disclosed in this application (but not limited to) with similar functions.

Claims (5)

1. A connecting device is characterized by comprising a chuck seat and a sliding block with a non-circular cross section, wherein a static chuck is arranged at the upper end of the chuck seat, a guide hole matched with the sliding block is arranged at the lower end of the chuck seat, the sliding block penetrates through the guide hole and can slide back and forth in the guide hole without rotating, a movable chuck is connected at the upper end of the sliding block, the movable chuck and the static chuck can be matched with and hold an object, a through hole is axially formed in the sliding block, a screw rod is arranged in the through hole, the upper end of the screw rod is rotatably connected with the sliding block, a driving structure for driving the screw rod to move is arranged at the lower end of the screw rod, a long strip-shaped guide groove is arranged on the side wall of the sliding block and corresponds to the screw rod, a containing groove is arranged on the side wall of the chuck seat and corresponds to the guide groove, a locking key is arranged in the containing groove, the upper end of, the locking end is provided with a locking thread matched with the screw thread on one side facing the screw, the unlocking end is elastically connected with the chuck seat through a locking key spring, and the elastic force of the locking key spring enables the locking end of the locking key to deflect towards the screw in a natural state and to pass through the guide groove to be meshed with the screw thread.

2. The connecting device according to claim 1, further comprising a return spring, wherein one end of the return spring is connected to the movable collet, the slider or the driving structure, and the other end of the return spring is connected to the collet seat, and the return spring applies a restoring force to the movable collet, the slider or the driving structure, and the restoring force is directed away from the stationary collet.

3. A connecting device according to any one of claims 1-2, wherein the movable and stationary jaws are of a cooperating concave arcuate jaw configuration or a duckbill jaw configuration.

4. A connecting device according to any one of claims 1-2, wherein said holder base is made of an electrically conductive material, and said holder base is further provided with a wiring structure for connecting a lead wire, thereby enabling said lead wire to be electrically connected to said object to be clamped.

5. The connecting device as claimed in claim 4, wherein the wiring structure includes a wiring portion provided on the holder base, the wiring portion being provided with a screw hole and a locking bolt engaged with the screw hole, and the wiring terminal of the lead wire or the lead wire can be fixedly attached to the holder base by the locking bolt.

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