CN112775880A

CN112775880A - Wrench tightening device

Info

Publication number: CN112775880A
Application number: CN201911092162.1A
Authority: CN
Inventors: 陈怡富
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2021-05-11

Abstract

The invention relates to a wrench tightening device, which comprises: the wrench body, axle center pole, the pearl body, dial spiral cover, flight and a accuse and press the group, pull the subassembly and include a D head spare, dial the concave appearance groove that establishes in spiral cover top, the flight is in holding the inslot and the spiral lock in D head spare, and the closure between flight and D head spare forms at least one rigid coupling district, the formation in at least one rigid coupling district is with the lock joint between fixed this flight and this D head spare, and this flight can't rotate out relatively this D head spare spiral again, borrow this D head spare that can stabilize to install in this wrench body and prevent to become flexible.

Description

Wrench tightening device

Technical Field

The invention relates to a wrench tightening device, in particular to a technology applied to the field of wrenches, which is mainly used for preventing a screw and an end cover from loosening after a D head is driven to rotate for a long time, and the wrench tightening device is an invention with excellent practicability.

Background

The main purpose of the wrench is to directly drive the part, so that the part can be locked or unlocked at the locked position, and construction operation can be easily and conveniently performed by a user, however, the types of the wrench are commonly used and can be roughly divided into an open (double offset ring) wrench and a D-head wrench which needs to be matched with a sleeve to be assembled, the open (double offset ring) wrench has a simple structure, and the open (double offset ring) wrench is mainly in a polygonal form at the opening, so that the wrench is conveniently sleeved at the head end of a screw and driven at the periphery of a nut, and the screw and the nut are also in the polygonal shape matched with the open shape of the open (double offset ring) wrench, so that the wrench; the D-head wrench is characterized in that a rotary cover for sealing the cover, a sleeve sleeved D-head and a pressure control set for clamping and positioning the sleeve at the D-head or separating from the D-head are arranged at one end of the D-head wrench, wherein the pressure control set comprises a screw, an end cover and a mandrel, the mandrel penetrates through the D-head and pushes a positioning steel ball to partially protrude out of the D-head by a spring, the positioning steel ball is used for clamping the sleeve, when the sleeve is to be disassembled, the mandrel is controlled by pressing the end cover to move so as to release the positioning steel ball clamping sleeve, the screw locks the end cover at one end of the mandrel so that the mandrel can be assembled at the wrench body, and a polygonal nut is arranged in the rotary cover and locked at the D-head so that the D-head can be assembled with the rotary cover and assembled at the D-head wrench.

The above-mentioned D-head wrench is a common structural type in the market today, and the D-head wrench has the advantage that the user does not need to deal with screws and nuts of different sizes like an open (ring) wrench, so that a plurality of opening (ring spanner) with different opening sizes are carried with the wrench, which is troublesome and increases the load, the D-head wrench can be used for screws and nuts of various sizes only by matching a universal wrench with sleeves of different sizes, and the load is reduced when the sleeve is carried compared with the whole open (ring) wrench, however, a problem is ignored in the arrangement of the D-head wrench, that is, when the D-head drives the sleeve to rotate for a long time, the condition that the screw moves back takes place easily with the polygon nut of D head interlocking, leads to unable urgent combination between D head and the spiral cover, lets the D head can't stabilize the operation even on D head spanner. Therefore, the related manufacturers must think how to avoid the above problems.

Disclosure of Invention

In order to solve the problem that the D head is loosened due to the fact that a polygonal nut is loosened from the D head when the D head is driven by the existing D head wrench for a long time, the invention provides a wrench tightening device, which enables the polygonal nut not to be easily separated when the D head rotates, and further stabilizes the assembly and combination of the D head, a screw cap and a D head wrench.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a wrench tightening device, comprising: a wrench body, one end of which is provided with a brake component, the brake component comprises a D head piece, one end of the D head piece protrudes out of the wrench body, a shaft center hole is arranged on the other end of the D head piece, and an embedding hole communicated with the shaft center hole is arranged on any peripheral side of one end of the D head piece protruding out of the wrench body; a shaft center rod which is arranged in the shaft center hole of the D-head piece, the shaft center rod is further concavely provided with a stepped groove corresponding to the embedding hole, and the stepped groove is divided into a deep groove section and a shallow groove section; a bead body, it is installed between said stepped groove and said embedded hole of said axle centre rod, and when said axle centre rod is up-down displaced in said axle centre hole, said bead body is pushed by said axle centre rod and partially projected out of said embedded hole when it is positioned in said shallow groove section, and when it is positioned in said deep groove section, it is not projected out of said embedded hole but is inserted into said deep groove section; the D-head piece is arranged in the accommodating groove, and the top end of the D-head piece protrudes out of the through hole and is positioned in the accommodating groove; the screw piece is positioned in the accommodating groove and is screwed on the D-head piece, at least one fixed connection area is further formed by the locking between the screw piece and the D-head piece, the locking between the screw piece and the D-head piece is fixed by the formation of the at least one fixed connection area, and the screw piece can not be screwed out relative to the D-head piece; and the pressure control group is arranged on the dial rotary cover, covers the containing groove and is combined with the axis rod, and the pressure control group moves in the containing groove of the dial rotary cover to drive the axis rod to move in the axis hole of the D head piece.

The invention has the advantages that when the D head rotates, the polygonal nut cannot be easily separated, and the assembly and combination of the D head, the screw cap and the D head wrench are further stabilized.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic exploded view of the present invention.

Fig. 2 is a perspective view of the screw piece and the D-head member of the present invention, which has a fastening region.

Fig. 3 is an assembled perspective view of the present invention.

FIG. 4 is a schematic sectional view of the line IV-IV of FIG. 3.

Fig. 5 is a partially enlarged schematic view of fig. 4.

Fig. 6 is a partially schematic perspective view of the dial cap of the present invention.

Fig. 7 is a perspective view of the device with the sleeve.

FIG. 8 is a schematic section through the VII-VII line of FIG. 7,

fig. 9 is a schematic diagram of the operation of fig. 8 after pressing.

FIG. 10 is a schematic view of the combination of the screw piece and the screw connection portion of the present invention.

FIG. 11 is a schematic view of the combination of the screw piece and the screw connection portion of the present invention.

The reference numbers in the figures illustrate:

10 sleeve

1 wrench body

11 head part

12 handle part

13 assembling hole

131 ring tooth part

2 brake component

21D head piece

22 axle center hole

23 inserting hole

24 screw connection part

25 sleeve joint part

26 clamping ring sheet

27 accommodating recess

28 ratchet block

281 teeth row

282 jack

29 spring part

291 latch

292 tip part

3 axle center rod

31 step groove

311 deep groove section

312 shallow groove section

4 beads

5-dial rotary cap

51 containing groove

52 perforation

53 spring

54 steering column

55 control shifting ring sheet

6 spiral slice

7 area of fixation

8 accuse pressure group

81 screw

82 cover plate

Detailed Description

Referring to fig. 1 to 11, a wrench tightening device according to the present invention includes: a wrench body 1, it has a head 11 and a shank 12, the shank 12 provides users to hold the operation, and the head 11 installs a brake assembly 2, the brake assembly 2 is mainly used for driving the rotation of the bush 10 to drive the screw, nut to remove, screw-up, and the brake assembly 2 includes a D head part 21, the D head part 21 is the main driving core, so one end of the D head part 21 protrudes in the wrench body 1, another have a shaft hole 22 to run through from one end of the D head part 21 to another end, and the D head part 21 protrudes in the wrench body 1 one end of any week side has a caulking hole 23 to communicate the shaft hole 22; a shaft center rod 3 is cylindrical and is arranged in the shaft center hole 22 of the D-head piece 21, a stepped groove 31 is further concavely arranged at the position of the shaft center rod 3 corresponding to the embedding hole 23, the stepped groove 31 is divided into a deep groove section 311 and a shallow groove section 312, and the depth of the deep groove section 311 is greater than that of the shallow groove section 312; a bead 4 is a round bead, the bead 4 is installed between the step groove 31 and the embedding hole 23 of the shaft center rod 3, and the shaft center rod 3 moves up and down in the shaft center hole 22, when the bead 4 is located in the shallow groove section 312, the bead is pushed by the shaft center rod 3 and partially protrudes out of the embedding hole 23, and when the bead 4 is located in the deep groove section 311, the bead does not protrude into the deep groove section 311 and does not protrude out of the embedding hole 23; a dial cover 5 is in a ring disk shape and is arranged on the wrench body 1 and opposite to one end of the D-head piece 21 which is convexly exposed, a containing groove 51 is downwards concavely arranged at the top end of the dial cover 5, a through hole 52 is arranged at the bottom of the containing groove 51, and the top end of the D-head piece 21 is convexly arranged in the containing groove 51 out of the through hole 52; a screw piece 6 is polygonal, and is positioned in the containing groove 51 and screwed on the D-head piece 21, and the locking between the screw piece 6 and the D-head piece 21 further forms at least one fixed connection area 7 at the top end; and a pressure control set 8, it is installed on the dial cover 5 and covers the containing groove 51 and combines with the shaft center rod 3, and the pressure control set 8 moves in the containing groove 51 of the dial cover 5 and drives the shaft center rod 3 to move in the shaft center hole 22 of the D head piece 21; wherein, through at least one fixing region 7 between the screw sheet 6 and the D head piece 21, the top ends of the screw sheet 6 and the D head piece 21 are changed in a destructive manner to change the screwing type, so that the screw sheet 6 can not be screwed relative to the D head piece 21, thereby the D head piece 21 can be stably installed on the wrench body 1 to prevent looseness.

According to the above description, after the screw piece 6 and the D-head 21 are locked and connected by at least one fixing area 7 at the top end of the D-head 21, the screw piece 6 and the top end face of the D-head 21 are processed, and the three processing methods of the present invention include breaking processing, welding processing and riveting processing, and the main purpose of the three processing methods is to fix the locking between the screw piece 6 and the D-head 21, so that the screw piece 6 cannot be screwed out relative to the D-head 21, but first the fixing area 7 is performed at the top end of the screw piece 6 by the breaking processing (as shown in fig. 5), then the fixing area 7 is also performed by the end face of the D-head 21 in the same manner, and the overall size and quality of the screw piece 6 are changed due to the fixing area 7, and the original screw locking combination affected by the change in screwing between the screw piece 6 and the D-head 21 is changed after the overall change of the screw piece 6, for example, the threads of the screw piece 6 and the D-head piece 21 are broken, so that the screw piece 6 cannot be screwed out again relative to the D-head piece 21 after the screw lock between the screw piece 6 and the D-head piece 21 is changed, so that no matter how the D-head piece 21 drives the sleeve 10 to rotate, the screw piece 6 cannot be screwed out relative to the D-head piece 21 any more, and the D-head piece 21 can be stably assembled on the head 11 of the wrench body 1 when the screw piece 6 cannot be screwed out any more, thereby preventing the D-head piece 21 from being loosened to influence operation and use; referring to fig. 10 again, the screw piece 6 and the D-head 21 may be fixed to each other by welding, so that the screw piece 6 cannot rotate any more; finally, referring to fig. 11, the screw piece 6 and the D-head 21 can be fixed by riveting, so that the screw piece 6 can not be screwed out.

According to the above description of the main technology of the present invention, referring to fig. 1, 8 and 9, in order to provide a user with the capability of quickly and conveniently operating the pressure control unit 8 to drive the spindle rod 3 to move and further release the sleeve connection between the D-head member 21 and the sleeve 10, the pressure control unit 8 includes a screw 81 and a cover plate 82, the cover plate 82 covers the slot 51 of the dial cover 5, the screw 81 penetrates the cover plate 82 and is locked on the spindle rod 3, the cover plate 82 shields the slot 51 and drives the spindle rod 3 to move by the screw 81, when the cover plate 82 enters the slot 51, the bead body 4 is controlled not to enter the deep slot section 311, and this state can allow the bead body 4 to retreat from the convex embedding hole 23 and further release the clamping connection with the sleeve 10; on the contrary, when the cover plate 82 moves towards the notch of the receiving slot 51, the screw 81 is driven to displace, and the displacement of the screw 81 drives the axial rod 3 to displace and reset, so that the bead 4 falls into the shallow slot section 312 and is pushed by the wall surface of the shallow slot section 312, the bead 4 gradually moves towards the embedding hole 23, and finally, the part of the bead 4 protrudes out of the embedding hole 23, so that the protruding part of the bead 4 can be clamped against the sleeve 10 to complete the combination between the D-head piece 21 and the sleeve 10.

Continuing the above description, in order to facilitate the user to use the cover plate continuously in the future, a spring 53 is further disposed in the accommodating groove 51, the spring 53 is spirally extended, one end of the spring 53 is sprung against the cover plate 82, the other end of the spring is sprung against the screw plate 6, the cover plate 82 is pressed to move towards the screw plate 6 to drive one end of the shaft center rod 3 to protrude from the shaft center hole 22, the spring 53 generates elastic force, when the force pressing the cover plate 82 disappears, the elastic force of the spring 53 pushes the cover plate 82 to return, the return of the cover plate 82 indirectly drives the shaft center rod 3 to return by the screw 81, so that the user only needs to press the cover plate 82, please refer to fig. 8 and 9. In view of the D-head 21 of the present invention, the structure of the D-head 21 further includes a screw-connecting portion 24 at the top end, a sleeve-connecting portion 25 protruding from the wrench body 1, the position of the sleeve joint part 25 is opposite to the screw joint part 24, the screw joint part 24 is in a circular tube shape and is provided with screw threads on the peripheral surface, the sleeve-joint part 25 is in the shape of a column block, in addition, a clamping-resisting ring piece 26 is annularly arranged between the screw-joint part 24 and the sleeve-joint part 25, the D head piece 21 is stuck to the wrench body 1 by the clamping-resisting ring piece 26, the D-head piece 21 and the screw-threaded part 24 are positioned in the wrench body 1, and the screw sheet 6 is locked at the periphery of the screw-threaded part 24, therefore, the fastening area 7 of the present invention can be formed by the screw piece 6 being locked to the screw connection portion 24 and then breaking the screw threads at the top ends of the screw piece 6 and the screw connection portion 24, the screw piece 6 can not be removed by rotation relative to the screw connection portion 24, as shown in fig. 4 to 6.

Finally, the present invention is mainly applied to a wrench which is sleeved with a sleeve 10 to drive a screw and a nut to loosen and tighten, and therefore, the wrench is provided with a related braking component, so that a containing concave portion 27 is further formed on the arrangement of the D-head piece 21, the braking component 2 comprises a ratchet block 28 and a spring piece 29 in a heart shape, an assembling hole 13 is further arranged to penetrate through the head portion 11 of the wrench body 1 in a vertical direction relative to the wrench body 1, a ring tooth portion 131 is annularly and convexly arranged on the inner hole wall of the assembling hole 13, the D-head piece 21 is arranged in the assembling hole 13, the sleeving portion 25 is exposed outside the assembling hole 13, the ratchet block 28 is arranged between the D-head piece 21 and the ring tooth portion 131 and is provided with a tooth row 281 and the ring tooth portion 131, the ratchet block 28 is provided with a jack 282 on the top end of the ratchet block 28, the spring piece 29 is vertically extended with a bolt 291, the latch 291 is inserted into the insertion hole 282 and the spring 29 is sleeved around the screw portion 24, in addition, the dial cap 5 further comprises a direction control column 54 protruding from the bottom end and a ring control sheet 55 surrounding the periphery of the dial cap 5, the end of the spring 29 opposite to the latch 291 is a tip 292, the direction control column 54 is engaged with the tip 292 of the spring 29, the ring of the dial ring control sheet 55 increases the contact area for controlling the rotation of the dial cap 5, the rotation of the dial cap 5 drives the steering column 54 to push the tip 292 of the spring 29, and the tip 292 is pushed to drive the ratchet block 28 to move by the combination of the pin 291 and the ratchet block 28, thereby changing the rotation direction of the D-head 21 and thereby achieving the forward and reverse rotation of the driving sleeve 10, as shown in fig. 1.

To summarize, the main technique of the present invention is to destroy the original screwing manner between the screw piece 6 and the screw connection portion 24 through the fixing connection region 7 at the top end of the screw connection portion 24 of the D-head 21, so that the screw piece 6 cannot be screwed out relative to the screw connection portion 24, thereby preventing the assembly of the sleeve 10 and the driving of the screw and the nut from being affected by the loosening of the D-head 21, and the assembly of the spring 53, the screw 81 and the cover plate 82 cannot be affected by the screw piece 6 being screwed out.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent variations and modifications made to the above embodiment according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A wrench tightening device, comprising:

a wrench body, one end of which is provided with a brake component, the brake component comprises a D head piece, one end of the D head piece protrudes out of the wrench body, a shaft center hole is arranged on the other end of the D head piece, and an embedding hole communicated with the shaft center hole is arranged on any peripheral side of one end of the D head piece protruding out of the wrench body;

a shaft center rod which is arranged in the shaft center hole of the D-head piece, the shaft center rod is further concavely provided with a stepped groove corresponding to the embedding hole, and the stepped groove is divided into a deep groove section and a shallow groove section;

a bead body, it is installed between said stepped groove and said embedded hole of said axle centre rod, and when said axle centre rod is up-down displaced in said axle centre hole, said bead body is pushed by said axle centre rod and partially projected out of said embedded hole when it is positioned in said shallow groove section, and when it is positioned in said deep groove section, it is not projected out of said embedded hole but is inserted into said deep groove section;

the D-head piece is arranged in the accommodating groove, and the top end of the D-head piece protrudes out of the through hole and is positioned in the accommodating groove;

the screw piece is positioned in the accommodating groove and is screwed on the D-head piece, at least one fixed connection area is further formed by the locking between the screw piece and the D-head piece, the locking between the screw piece and the D-head piece is fixed by the formation of the at least one fixed connection area, and the screw piece can not be screwed out relative to the D-head piece;

and the pressure control group is arranged on the dial rotary cover, covers the containing groove and is combined with the axis rod, and the pressure control group moves in the containing groove of the dial rotary cover to drive the axis rod to move in the axis hole of the D head piece.

2. The wrench tightening device according to claim 1, wherein the D-head further includes a screw connection portion at a top end, a socket portion protruding from the wrench body, the socket portion being disposed at a position opposite to the screw connection portion, a retaining ring is disposed between the screw connection portion and the socket portion, the D-head abuts against the wrench body with the retaining ring, the D-head and the screw connection portion are disposed inside the wrench body, and the screw is locked to an outer periphery of the screw connection portion.

3. The wrench tightening device according to claim 2, wherein at least one fastening region formed by the mutual fastening between the screw piece and the screw connection portion fixes the fastening between the screw piece and the screw connection portion in a destructive processing manner.

4. The wrench tightening device according to claim 2, wherein at least one fastening region formed by the mutual locking between the screw piece and the screw portion is formed by welding to fix the locking of the screw piece and the screw portion.

5. The wrench tightening device according to claim 2, wherein at least one fastening region formed by the mutual locking between the screw piece and the screw portion is formed by riveting so as to fix the locking of the screw piece and the screw portion.