CN112388549A

CN112388549A - Automatic open spanner

Info

Publication number: CN112388549A
Application number: CN202011307256.9A
Authority: CN
Inventors: 周静
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-02-23

Abstract

The invention discloses an automatic open spanner, which comprises a handle frame, a swing claw, a swing driving component and a spanner head, wherein the swing claw is arranged on the handle frame; the handle frame is internally provided with a central assembly hole, the lower end of the handle frame is provided with two chucks, and an assembly groove is formed between the two chucks; the wrench head is inserted into the clamping opening of the chuck, and the outer side wall of the wrench head is provided with a tooth socket and an inlet and outlet opening; the swing claw is arranged in the assembly groove, a driving toothed sheet is arranged in the swing claw, the driving toothed sheet has a compression position and a driving position relative to the swing claw, teeth on the driving toothed sheet on the compression position can be pressed into the inner wall of the claw opening by a tooth groove to be separated from the tooth groove, and teeth on the driving toothed sheet on the driving position are positioned and protruded and meshed with the tooth groove; the swing driving component can drive the swing claw to swing and can be matched with a tooth groove on the wrench head to drive the driving tooth piece to move between a driving position and a compression position. The invention can be conveniently used in various narrow environments, reduces the labor intensity and improves the working efficiency.

Description

Automatic open spanner

Technical Field

The invention relates to the field of wrenches, in particular to an automatic open-end wrench.

Background

The electric control of motors in the industries such as electric control cabinets, communication industry, new energy automobiles and the like generally adopts a cable joint to connect a cable for protecting wiring. The installation of joint all can not leave spanner instrument, uses spanner instrument to realize cable joint's installation protection and the guard action to the cable. Most of the existing cable connectors are installed by means of a manual wrench, the automatic installation tools are few in the market at present, the price is high, the space structure is large, and the cable connectors cannot be used under many actual installation working conditions.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an automatic open spanner which can be conveniently used in various narrow environments, reduces the labor intensity and improves the working efficiency.

In order to achieve the purpose, the invention provides the following technical scheme:

an automatic open spanner is characterized in that: comprises a handle frame, a swing claw, a swing driving component and a wrench head;

the handle frame is internally provided with a central assembly hole penetrating through the handle frame, the lower end of the handle frame is provided with two chucks, and an assembly groove is formed between the two chucks;

the wrench head is inserted into the clamping opening of the chuck, the outer side wall of the wrench head is provided with a tooth socket extending along the circumferential direction of the wrench head, and the side wall of the wrench head is provided with an inlet and outlet opening;

the swing claw is arranged in the assembly groove, a claw opening of the swing claw corresponds to a clamping opening of the clamping head and is used for a wrench head to pass through, a driving toothed sheet is arranged in the inner wall of the swing claw corresponding to the claw opening, the driving toothed sheet has a compression position and a driving position relative to the swing claw, when the driving toothed sheet is located at the compression position, teeth on the driving toothed sheet can be pressed into the inner wall of the claw opening by a tooth socket on the wrench head to be separated from the tooth socket, and when the driving toothed sheet is located at the driving position, the teeth on the driving toothed sheet are positioned to protrude to the inner wall of the claw opening and are meshed with the tooth socket on the wrench head;

the swing driving assembly is arranged in the central assembling hole, is connected with the swing claw and can drive the swing claw to swing left and right, and the swing claw can be matched with a tooth groove on the wrench head to drive the driving tooth piece to move between a driving position and a compression position when swinging.

Preferably, an arc-shaped mounting groove for the driving tooth piece to be installed is formed in the inner wall, corresponding to the claw opening, of the swing claw, the compression position and the driving position are located at two ends of the arc-shaped mounting groove respectively, and a spring for pushing the driving tooth piece on the compression position outwards is arranged between the driving tooth piece and the mounting groove.

Preferably, the side surface of the driving tooth piece and the inner wall of the mounting groove are formed with limit steps which are mutually matched in a limiting way.

Preferably, the swing driving assembly comprises a driving bead, a transmission shaft and a driving motor;

the transmission shaft is arranged in the central assembly hole through a bearing, the upper end of the transmission shaft is connected with the driving motor, and the end wall of the lower end of the transmission shaft is provided with an eccentric shaft;

the driving balls are connected to the eccentric shaft and movably matched in a sliding groove axially extending along the jaw opening at the top of the swinging jaw.

Preferably, the cross section of the sliding chute is of a circular arc structure, and the radian is greater than 180 degrees.

Preferably, the upper end of the transmission shaft is connected with a plurality of transmission gears, and the output shaft of the motor is connected with a driving gear matched with the transmission gears.

Preferably, the handle frame is provided with a reset sensor electrically connected with the swing driving assembly, and the wrench head is provided with a reset sensing point for sensing by the reset sensor.

Preferably, the wrench head comprises a tube body and a tube head, and the diameter of the tube body is smaller than that of the tube head; the tooth socket is positioned on the pipe body, and the pipe body is sleeved in the clamping port; the tube head is internally provided with a joint positioning groove and is positioned outside the clamping opening.

The invention has the advantages that:

1. the open type arrangement of the wrench head can avoid the cable, and the joint with the cable is convenient to mount and dismount;

2. the cable joint is high in mounting and dismounting efficiency, the labor intensity is reduced, and the cable joint is suitable for a long-time production environment;

3. can use in narrow and small cable joint clearance space, flexibility and the commonality of using can show and promote.

Drawings

FIG. 1 is an exploded view of an automatic open wrench according to the present embodiment;

FIG. 2 is an assembly view of the automatic open wrench of the present embodiment;

FIG. 3 is a schematic view of the engagement of the driving blade with the wrench head on the swing claw according to the present embodiment;

FIG. 4 is a schematic view of the driving teeth of the present embodiment in a compressed position;

fig. 5 is a schematic diagram of the driving blade in the driving position according to the present embodiment.

Detailed Description

The automatic open wrench of the present invention will be further described with reference to fig. 1 to 5.

An automatic open spanner is characterized in that: comprises a handle frame 1, a swing claw 2, a swing driving component 3 and a wrench head 5.

The handle frame 1 is of a tubular structure, a central assembly hole penetrating through the upper end and the lower end of the handle frame 1 is formed in the handle frame 1, two parallel clamping heads 11 with clamping openings 111 are formed on the lower end of the handle frame 1, and an assembly groove 112 is formed between the two clamping heads 11. The wrench head 5 is of a sleeve type structure, and is axially inserted into the clamping opening 111 of the chuck 11, a tooth groove 511 extending along the circumferential direction of the wrench head 5 is arranged on the outer side wall of the wrench head 5, an inlet and outlet opening 53 is arranged on the side wall of the wrench head 5, and the inlet and outlet opening 53 penetrates through two end faces of the wrench head 5 to avoid cables. The swing claw 2 is arranged in the assembly groove 112, the swing claw 2 is provided with a claw opening 21, the claw opening 21 corresponds to the clamping opening 111 of the chuck 11 and is penetrated by the wrench head 5, a driving toothed sheet 4 is arranged in an inner wall 211 of the swing claw 2 corresponding to the claw opening 21, the driving toothed sheet 4 is an arc-shaped sheet and is provided with teeth 41 on the side surface thereof, the driving toothed sheet 4 is provided with a compression position 43 and a driving position 42 relative to the swing claw 2, when the driving toothed sheet 4 is positioned at the compression position, the teeth 41 on the driving toothed sheet 4 can be pressed into the inner wall 211 of the claw opening 21 by a tooth groove 511 on the wrench head 5 so as to be separated from the tooth groove 511, and when the driving toothed sheet 4 is positioned at the driving position 42, the teeth on the driving toothed sheet 4 are positioned to be protruded to the inner wall 211 of the claw opening 21 and are meshed with the tooth groove 511 on the wrench head. The swing driving component 3 is arranged in the central assembly hole, the swing driving component 3 is connected with the swing claw 2 and can drive the swing claw 2 to swing left and right, and the swing claw 2 can be matched with a tooth groove 511 on the wrench head 5 to drive the driving tooth piece 4 to move between the driving position 42 and the compression position when swinging.

Specifically, an arc-shaped mounting groove 23 for installing the driving tooth piece 4 is formed in an inner wall 211 of the swing claw 2 corresponding to the claw opening 21, the compression position 43 and the driving position 42 are respectively located at two end positions of the arc-shaped mounting groove 23, and a spring 6 for pushing the driving tooth piece 4 at the compression position outwards is arranged between the driving tooth piece 4 and the mounting groove 23, namely one end of the spring 6 is supported on a bottom wall 231 of the mounting groove 23, and the other end of the spring 6 is supported in a positioning counter bore at the back of the driving tooth piece 4. In this embodiment, the driving tooth piece 4 is provided with two pieces to improve the stability of driving the wrench head 5.

During specific work, the wrench head 5 is sleeved on the joint of the cable from the radial direction of the cable through the access opening 53; in the initial position, the driving toothed plate 4 is positioned on the compression position 43 on the left side of the mounting groove 23 shown in figure 3, and the spring 6 pushes out the driving toothed plate 4 to enable the teeth on the driving toothed plate 4 to be meshed with the tooth grooves 511 on the wrench head 5; the swing driving component 3 is utilized to drive the swing claw 2 to swing left and right; when the upper end of the swing claw swings leftwards, the wrench head 5 drives the driving toothed sheet 4 to a driving position 42 at the right side of the mounting groove 23 through a toothed groove 511, when the driving position 42 is at the driving position, teeth 41 on the driving toothed sheet 4 protrude out of the inner wall of the claw opening 21 under the guiding support of the inner wall of the mounting groove and are meshed with the toothed groove 511 on the wrench head 5, the swing claw 2 continuously swings leftwards to drive the wrench head 5 to rotate anticlockwise, and therefore the cable joint is driven to rotate; because the force required by the rotation of the wrench head 5 is greater than the force required by the movement of the driving toothed sheet 4 from the driving position 42 to the compression position and is also greater than the force required by the compression of the spring 6, when the upper end of the swinging piece swings rightwards from the leftmost side, the driving toothed sheet 4 moves to the compression position under the action of the tooth grooves 511, the driving toothed sheet 4 in the compression position is pressed into the swinging claw 2 along with the continuous right swinging of the upper end of the swinging piece, the wrench head 5 does not move in the process until the upper end of the swinging piece swings rightwards and then swings leftwards, and when the upper end of the swinging piece swings leftwards, the process is repeated, so that the wrench head 5 is driven to rotate unidirectionally to drive the cable joint to rotate, and the operation of workers is facilitated.

In order to avoid the driving toothed sheet 4 from falling out of the groove opening on the inner wall 211 of the claw opening 21 corresponding to the mounting groove 23,

limiting steps

44 and 232 which are mutually limited and matched are formed on the side surface of the driving toothed sheet 4 and the inner side wall of the mounting groove 23, and meanwhile, the

limiting steps

44 and 232 are used for limiting the driving toothed sheet on the driving position so as to avoid the driving toothed sheet from being continuously pushed out on the driving position; in order to prevent the drive tooth 4 from falling out of the mounting groove 23 in correspondence with the notch in the end wall of the pivoting pawl 2, a cover plate (not shown in the drawings) is screwed onto this notch.

The swing driving assembly 3 comprises a driving ball 31, a transmission shaft 32 and a driving motor (not shown in the figure); the transmission shaft 32 is arranged in the central assembly hole through an upper needle bearing 34 and a lower needle bearing 34, the upper end of the transmission shaft 32 is connected with a driving motor, and the end wall of the lower end of the transmission shaft 32 is provided with an eccentric shaft. The driving ball 31 is inserted into the eccentric shaft through the insertion hole of the body, and the driving ball 31 is movably fitted into the slide groove 22 extending axially along the claw opening 21 at the top of the swing claw 2. With this structure, when the driving motor drives the transmission shaft 32 to rotate, the eccentric shaft eccentrically rotates to drive the swing claw 2 to swing left and right, and simultaneously, the driving ball 31 drives the ball 31 to slide back and forth relative to the sliding groove 22 when driving the swing claw 2 to swing left and right.

The cross section of the chute 22 is in a circular arc structure, and the radian is larger than 180 degrees. With the structure, the radial spacing between the swing claw 2 and the driving ball 31 can be realized, and the swing claw 2 can be conveniently positioned in the assembling groove 112.

The upper end circumference spacing connection of transmission shaft 32 has transmission sleeve 33, and transmission sleeve's upper end is connected with three drive gear 35, is connected with drive gear on driving motor's the output shaft, and drive gear is located between three drive gear 35 to drive gear 35 and transmission shaft 32 and rotate, thereby drive swing claw 2's horizontal hunting.

A limit groove is formed in the inner wall of the central hole of the transmission sleeve, and a limit strip matched with the limit groove is formed in the side wall of the upper end of the transmission shaft 32, so that circumferential limit matching of the limit groove and the limit groove is achieved.

As another embodiment of the swing driving assembly 3 of this embodiment, the swing driving assembly 3 may also drive the swing claw 2 to swing left and right in a pneumatic manner.

The handle frame 1 is provided with a reset sensor and a reset switch which are electrically connected with the driving motor, and the wrench head 5 is provided with a reset induction point. When the wrench head 5 needs to be withdrawn from the cable connector, the reset sensor and the reset sensing point are utilized to drive the in-out opening of the wrench head to correspond to the openings of the clamping opening 111 and the jaw opening 21, so that the cable can be moved out of the wrench head 5, and the operation is convenient. The process of resetting the wrench head 5 is as follows: through the cooperation of tooth's socket 511 on above-mentioned drive toothpicks 4 and the wrench head 5, drive wrench head 5 and rotate, wrench head 5 is at the rotation in-process, and reset sensor can detect the induction point that resets on the wrench head 5, in case detect this point and control driving motor stall promptly, wrench head 5 stall simultaneously, and the business turn over opening of wrench head 5 this moment corresponds with the opening that presss from both sides mouthful 111, claw mouth 21.

The wrench head 5 comprises a pipe body 51 and a pipe head 52, wherein the diameter of the pipe body 51 is smaller than that of the pipe head 52; the tooth grooves 511 are positioned on the pipe body 51, and the pipe body 51 is sleeved in the clamping opening 111; the pipe head 52 is provided with a joint positioning groove 521 therein, the pipe head 52 is positioned outside the clamping opening 111, and the reset sensing point is positioned on the circumferential side wall of the pipe head. With this structure, there is no other part on the outer circumference of the ferrule 52, so that the ferrule 52 can be easily inserted into the gap of the cable connector, thereby facilitating the use of the present invention in a small space.

Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.

Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. An automatic open spanner is characterized in that: comprises a handle frame, a swing claw, a swing driving component and a wrench head;

2. The automatic open-end wrench as claimed in claim 1, wherein: the inner wall of the swing claw corresponding to the claw opening is provided with an arc-shaped mounting groove for the driving tooth piece to be arranged in, the compression position and the driving position are respectively positioned at two ends of the arc-shaped mounting groove, and a spring for pushing the driving tooth piece on the compression position outwards is arranged between the driving tooth piece and the mounting groove.

3. The automatic open-end wrench as claimed in claim 2, wherein: and limiting steps which are mutually limited and matched are formed on the side surface of the driving tooth piece and the inner wall of the mounting groove.

4. The automatic open-end wrench as claimed in claim 1, wherein: the swing driving assembly comprises a driving ball, a transmission shaft and a driving motor;

5. The automatic open spanner as claimed in claim 4, wherein: the cross section of the sliding groove is of an arc structure, and the radian is larger than 180 degrees.

6. The automatic open spanner as claimed in claim 4, wherein: the upper end of the transmission shaft is connected with a plurality of transmission gears, and the output shaft of the motor is connected with a driving gear matched with the transmission gears.

7. The automatic open-end wrench as claimed in claim 1, wherein: the handle frame is provided with a reset sensor electrically connected with the swing driving assembly, and the wrench head is provided with a reset induction point for the reset sensor to induce.

8. The automatic open-end wrench as claimed in claim 1, wherein: the wrench head comprises a pipe body and a pipe head, and the diameter of the pipe body is smaller than that of the pipe head; the tooth socket is positioned on the pipe body, and the pipe body is sleeved in the clamping port; the tube head is internally provided with a joint positioning groove and is positioned outside the clamping opening.