CN110238784B

CN110238784B - Reversing wrench structure

Info

Publication number: CN110238784B
Application number: CN201810195398.7A
Authority: CN
Inventors: 黄证城
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-03-09
Filing date: 2018-03-09
Publication date: 2022-02-18
Anticipated expiration: 2038-03-09
Also published as: CN110238784A

Abstract

The invention discloses a reversing wrench structure, which comprises: the ratchet piece is connected with a connecting shaft through a shaft bolt by an inner concave arc groove, and then the connecting shaft is sleeved with an elastic piece and assembled into a through hole of a shaft column of the control piece, so that when the control piece is switched, the control piece can be really connected with the ratchet piece through the connecting shaft, and meanwhile, a connecting fulcrum is formed through the shaft bolt, so that the smoothness of displacement and action of the ratchet piece is improved, the elastic piece can be really stretched in the through hole, the fault condition of deformation or popping is avoided, and the reversing wrench structure has the effects of stabilizing operation and increasing the structural meshing strength, and the durability of the reversing wrench is improved.

Description

Reversing wrench structure

Technical Field

The present invention relates to a wrench, and more particularly to a reversible wrench structure.

Background

Referring to fig. 9, in a conventional reversing wrench structure, a rotating member 60 is assembled at one end of a wrench 50, and the rotating member 60 can rotate at the end of the wrench 50, so as to wrench a nut or a bolt for locking and loosening, a gear ring 61 is disposed at an outer edge of the rotating member 60, a ratchet member 70 is engaged with one side of the gear ring 61, the ratchet member 70 can move in a first slot chamber 51 inside the wrench 50, an arc 71 is formed at the other end surface of the ratchet member 70 engaged with the rotating member 60, a second slot chamber 52 is communicated with the first slot chamber 51 of the wrench 50, a control block 80 is disposed in the second slot chamber 52, the control block 80 is disposed with an insertion hole 81, a spring 82 is disposed in the insertion hole 81, and a supporting sleeve 83 is sleeved at a top end of the spring 82, so that the supporting sleeve 83 is supported by the spring 82 and abuts against the arc 71 of the ratchet member 70, the control block 80 controls the abutting sleeve 83 to selectively push the ratchet member 70 against different sides of the first chamber 51, so as to generate a pulling effect with unidirectional driving.

The above-mentioned prior art structure can be seen in detail that there are some disadvantages, and the main reasons are summarized as follows:

firstly, a spring 82 and a support sleeve 83 are arranged between the ratchet member 70 and the control block 80, one end of the support sleeve 83 is pushed by the spring 82, and the other end of the support sleeve 83 slides and supports against the arc face 71 of the ratchet member 70, when the ratchet member 70 is pulled by the wrench 50 to generate vibration or the control block 80 is switched, one end of the support sleeve 83 slides on the arc face 71 of the ratchet member 70, and the other end of the support sleeve laterally rubs on the insertion hole 81 of the control block 80, so that the support sleeve 83 and the spring 82 are easily ejected or deformed from the insertion hole 81, resistance is formed to reduce the operation stability, and the problem of insufficient structural strength is obviously caused.

Secondly, the assembly step of the wrench 50 is to install the control block 80 at the second slot chamber 52, and to fasten and fix the control block 80, so as to limit the control block 80 to only rotate, and then to place the spring 82 into the jack 81 from the first slot chamber 51, and to sleeve the top end of the spring 82 with the support sleeve 83, because the opening of the first slot chamber 51 faces the direction of the rotating member 60, the action of installing the spring 82 will not be easy, the volume of the spring 82 and the support sleeve 83 is small, so that the situation of dropping or losing in the assembly process is easy to occur, the assembly difficulty can be further improved, and the wrench has the defect of not easy assembly and too many components.

Third, a spring 82 and a support sleeve 83 are interposed between the ratchet member 70 and the control block 80, and one end of the support sleeve 83 is pushed by the spring 82, and the other end of the support sleeve 83 slides and supports against the arc face 71 of the ratchet member 70, and under the action of the ratchet member 70, the support sleeve 83 can push the spring 82 to stretch and contract, so that a moving space of the ratchet member 70 is kept between the ratchet member 70 and the control block 80, and the support sleeve 83 and the spring 82 excessively protrude out of the insertion hole 81, so that the positioning effect of the support sleeve 83 and the spring 82 can be reduced.

In view of the above, the present inventors have made various experiments on the manufacturing, development and design of related products for many years, and have made detailed design and careful evaluation to achieve the above objectives, and finally have a practical invention.

Disclosure of Invention

The technical problem to be solved by the present invention is to provide a reversing wrench structure for overcoming the above disadvantages in the prior art.

The invention provides a reversing wrench structure, which comprises: a wrench body, a control piece, a pawl piece and a ratchet piece, the wrench body has a first working part and a second working part, the first working part has a mounting hole and a control hole, an arc pawl tooth slot is set between the mounting hole and the control hole, the control piece has a handle part and a shaft column, the shaft column has a step-shaped through hole in radial direction, and is set in the control hole by the shaft column, the pawl piece is set in the arc pawl tooth slot, one end of the pawl piece faces the mounting hole to form an arc tooth part, the other end faces the control hole to form an inner concave arc slot, the inner concave arc slot connects a connecting shaft through a shaft bolt, the connecting shaft also has an elastic piece, and sets the elastic piece in the through hole along with the connecting shaft, the ratchet piece is set in the mounting hole of the first working part, the outer edge of the ratchet piece forms a ring tooth part, the annular tooth part is engaged with the arc tooth part of the pawl part to form a tool hole in the inner diameter of the ratchet wheel part, so that the reversing wrench structure is formed.

Preferably, the front end of the coupling shaft forms a round head, and the round head is provided with a through hole for the shaft bolt to pass through.

Preferably, the inner edge of the mounting hole of the first working portion is provided with a fixing ring groove, the outer edge of the ratchet member is concavely provided with a limiting ring groove, a C-shaped fastener is embedded in the limiting ring groove, and the C-shaped fastener is combined in the fixing ring groove, so that the ratchet member is limited in the mounting hole.

Preferably, the wrench body is expanded with a limiting groove at the upper end of the control hole for limiting the handle portion of the control member, and the limiting groove has an opening, and two sides of the opening are respectively provided with a first blocking portion and a second blocking portion.

Efficacy against the prior art:

the first step, the pawl element is connected with a linkage shaft through an inner concave arc groove and a shaft bolt, and then the linkage shaft is sleeved with an elastic element and assembled into the control element in the through hole of the shaft column, so that the control element can be linked with the pawl element through the linkage shaft when switching operation, and meanwhile, a linkage fulcrum is formed through the shaft bolt, thereby improving the smooth degree of displacement actuation of the pawl element, and further ensuring that the elastic element can be stretched in the through hole, avoiding the fault condition of deformation or popping up, and further having the efficacy of stabilizing operation and increasing the structural meshing strength, and improving the durability.

And (II) the pawl element is sleeved with an elastic element through the linkage shaft, and the linkage shaft directly limits the elastic element in the through hole during combination, so that the connection state of the pawl element and the control element can be completed, the assembly steps of the wrench body are effectively simplified, the structural assembly time and the labor cost are reduced, and the economic benefit is promoted.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a plan view of the present invention.

Fig. 4 is an assembled cross-sectional view of the present invention.

Fig. 5 is a schematic view illustrating the present invention rotating clockwise to form idle rotation.

FIG. 6 is a schematic view of the present invention rotated counterclockwise and coupled to a ratchet member.

FIG. 7 is a schematic view of the wrench adjustment control member of the present invention.

FIG. 8 is a schematic view illustrating the ratchet member being rotated clockwise and coupled according to the present invention.

Fig. 9 is a schematic diagram of a known technique.

Symbolic illustration in the drawings:

the symbols in the present invention are:

10 a wrench body; 11 a first working part; 12 a second working part; 13 installing holes; 131 fixing ring grooves; 14 a control aperture; 141 a limit groove; 142 opening; 15 a gullet; 20 a control member; 21 a handle; 22-axis column; 23, perforating holes; 30 a pawl element; 31 arc-shaped tooth parts; 32 inner concave arc grooves; 321 a shaft bolt; 33 a coupling shaft; 331 a round head; 332 through the hole; 34 an elastic member; 40 ratchet member; 41 ring tooth part; 42 tool holes; 43 limiting ring grooves; a 44C-shaped fastener;

symbol marking in the known art:

50 wrenches; 51 a first chamber; 52 a second chamber; 60 a rotating member; 61, a toothed ring; 70 ratchet member; 71 cambered surface; 80 a control block; 81 insertion holes; 82 springs; 83 is supported and sleeved.

Detailed Description

For a better understanding and appreciation of the objects, features, and advantages of the present invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings, in which:

first, referring to fig. 1 and 2, the present invention provides a reversing wrench structure, which includes: a wrench body 10, a control member 20, a pawl member 30 and a ratchet member 40, the wrench body 10 having a first working portion 11 and a second working portion 12, the first working portion 11 having a mounting hole 13 and a control hole 14, the mounting hole 13 communicating with the control hole 14 to form an arc-shaped pawl slot 15, the mounting hole 13 having a fixing ring groove 131 on the inner edge, the control hole 14 having a limit groove 141 on the upper end, the limit groove 141 having an opening 142, the control member 20 having a handle portion 21 and a shaft post 22, the shaft post 22 having a step-shaped through hole 23 in the radial direction and assembled in the control hole 14 by the shaft post 22, the pawl member 30 received in the arc-shaped pawl slot 15 with one end facing the mounting hole 13 to form an arc-shaped tooth portion 31 and the other end facing the control hole 14 to form an inner concave arc-shaped slot 32, the inner concave arc-shaped slot 32 connecting with a shaft 33 through a shaft bolt 321, the front end of the coupling shaft 33 forms a round head 331, the round head 331 has a through hole 332 for the shaft bolt 321 to pass through, and the coupling shaft 33 is further sleeved with an elastic member 34, and the elastic member 34 is assembled in the through hole 23 along with the coupling shaft 33, the ratchet member 40 is accommodated in the mounting hole 13 of the first working portion 11, the outer edge of the ratchet member 40 forms a ring tooth 41, and is engaged with the arc tooth 31 of the pawl member 30 through the ring tooth 41, and the inner diameter of the ratchet member 40 forms a tool hole 42, the outer edge of the ratchet member 40 is concavely provided with a limit ring groove 43, and the limit ring groove 43 is embedded with a C-shaped fastener 44.

Referring to fig. 2, 3 and 4, the wrench body 10 is provided with the control member 20, the pawl groove 15 and the installation hole 13, wherein the control member 20, the pawl member 30 and the ratchet member 40 are respectively installed through the control hole 14, the pawl groove 15 and the installation hole 13, wherein the control member 20 is formed by a shaft post 22 passing through the control hole 14, the handle portion 21 is limited in the limit groove 141 and passes through the opening 142, the inner concave arc groove 32 of the pawl member 30 is formed by a shaft bolt 321 connecting a connecting shaft 33, the connecting shaft 33 is sleeved with an elastic member 34, the connecting shaft 33 faces the control hole 14 to place the pawl member 30 into the pawl groove 15 through the installation hole 13, the connecting shaft 33 with the elastic member 34 passes through the control member 20 in the through hole 23 of the shaft post 22 and reaches the elastic expansion and contraction of the connecting shaft 33 through the elastic member 34, the arc-shaped tooth portion 31 faces the installation hole 13, and finally the ratchet member 40 is installed into the installation hole 13, a C-shaped fastener 44 is clamped between the limiting ring groove 43 and the fixing ring groove 131, so that the ratchet member 40 is limited in the mounting hole 13, and a reverse wrench structure is completed.

Referring to fig. 5 and 6, the wrench body 10 is engaged with the screw locking unit through the tool hole 42 of the ratchet member 40, and the wrench body 10 is rotated to achieve the locking and releasing state of the screw locking unit, the control member 20 firstly controls the direction of the engaging and releasing between the pawl member 30 and the ratchet member 40, when the pawl member 30 is rotated by the control member 20 to abut against the pawl slot 15 clockwise, the coupling shaft 33 and the elastic member 34 simultaneously urge the pawl member 30 clockwise, when the wrench body 10 rotates clockwise, the ratchet member 40 can push the pawl member 30 back along the elastic member 34 because the direction of the wrench body 10 is the same as the direction of the elastic member 34, so that the arc-shaped tooth portion 31 of the pawl member 30 cannot effectively engage with the ring 41 of the ratchet member 40, when the wrench body 10 is rotated counterclockwise, please refer to fig. 6, since the direction of the linkage shaft 33 of the pawl member 30 pushed by the elastic member 34 is opposite to the actuating direction of the wrench body 10, the pawl member 30 cannot be pushed back to engage the arc-shaped tooth portion 31 with the annular tooth portion 41 of the ratchet member 40, and further the ratchet member 40 is driven to rotate and achieve the twisting action of the screw locking unit, thereby forming the driving state of the wrench body 10 with counterclockwise one-way twisting.

Secondly, when the control member 20 is pulled in the other direction, referring to fig. 7 and 8, the pawl member 30 is pulled by the control member 20 to abut against the pawl slot 15 in the counterclockwise direction, and the linking shaft 33 and the elastic member 34 push the pawl member 30 in the counterclockwise direction, when the wrench body 10 rotates in the counterclockwise direction, the ratchet member 40 can push the pawl member 30 back along the elastic member 34 direction because the actuating direction of the wrench body 10 is the same as the pushing direction of the elastic member 34, so that the arc-shaped tooth portion 31 of the pawl member 30 cannot effectively engage with the ring-shaped tooth portion 41 of the ratchet member 40, forming an idle rotation state, otherwise, when the wrench body 10 rotates in the clockwise direction, the linking shaft 33 of the pawl member 30 is pushed by the elastic member 34 in the opposite direction to the actuating direction of the wrench body 10, so that the pawl member 30 cannot be pushed back to actually engage with the ring-shaped tooth portion 41 of the ratchet member 40, thereby driving the ratchet member 40 to rotate and achieve the twisting action of the screw locking unit, thereby forming the driving state of clockwise one-way twisting of the wrench body 10.

With the structure of the above embodiment, the following benefits can be obtained: the pawl element 30 is connected with a linkage shaft 33 through an inner concave arc groove 32 by a shaft bolt 321, and then the linkage shaft 33 is sleeved with an elastic element 34 and assembled into the control element 20 in the through hole 23 of the shaft column 22, so that when the control element 20 is switched, the pawl element 30 can be linked by the linkage shaft 33, and a linkage fulcrum is formed by the shaft bolt 321, thereby improving the smoothness of the displacement and the action of the pawl element 30, further ensuring that the elastic element 34 can be stretched and contracted in the through hole 23, avoiding the fault condition of deformation or ejection, further having the efficacy of stabilizing the operation and increasing the meshing strength of the structure, and improving the durability; the pawl 30 is sleeved with an elastic member 34 through the linkage shaft 33, and the linkage shaft 33 directly limits the elastic member 34 in the through hole 23 during assembly, so that the connection state of the pawl 30 and the control member 20 can be completed, the assembly steps of the wrench body 10 are effectively simplified, the structural assembly time and the labor cost are reduced, and the economic benefit is improved.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention; therefore, all the equivalent changes and modifications made according to the claims of the present invention should fall within the scope of the present invention.

Claims

1. A reversible wrench structure, comprising:

the wrench comprises a wrench body, a first clamping part and a second clamping part, wherein the wrench body is provided with a first working part and a second working part, the first working part is provided with an installation hole and a control hole, and an arc-shaped tooth pulling groove is communicated between the installation hole and the control hole;

the control piece is provided with a handle part and a shaft post, the shaft post is radially provided with a step-shaped through hole, and the shaft post is assembled in the control hole;

a pawl element, which is contained in the arc pawl tooth slot, one end of the pawl element faces the mounting hole to form an arc tooth part, the other end faces the control hole to form an inner concave arc slot, the inner concave arc slot is connected with a connecting shaft through a shaft bolt, the connecting shaft is also sleeved with an elastic element, and the elastic element is assembled in the through hole along with the connecting shaft;

a ratchet wheel piece, which is accommodated in the mounting hole of the first working part, an annular tooth part is formed on the outer edge of the ratchet wheel piece, and the annular tooth part is engaged with the arc-shaped tooth part of the pawl tooth piece to actuate, and a tool hole is formed on the inner diameter of the ratchet wheel piece.

2. The wrench structure of claim 1, wherein the front end of the coupling shaft forms a round head, and the round head has a through hole for the shaft to pass through.

3. The reversible wrench structure according to claim 1, wherein the first working portion has a fixing ring groove formed in an inner edge of the mounting hole, the ratchet member has a limiting ring groove recessed in an outer edge thereof, a C-shaped fastener is inserted into the limiting ring groove, and the C-shaped fastener is engaged with the fixing ring groove, thereby limiting the ratchet member in the mounting hole.

4. The wrench structure of claim 1, wherein the wrench body includes a limiting groove formed at an upper end of the control hole for limiting the handle portion of the control member, the limiting groove has an opening, and a first blocking portion and a second blocking portion are respectively formed at two sides of the opening.