CN109397162B

CN109397162B - Spanner

Info

Publication number: CN109397162B
Application number: CN201811280990.3A
Authority: CN
Inventors: 赵章献; 魏雪; 王帅; 廖志鑫; 刘端
Original assignee: Wuhan Marine Machinery Plant Co Ltd
Current assignee: Wuhan Marine Machinery Plant Co Ltd
Priority date: 2018-10-30
Filing date: 2018-10-30
Publication date: 2021-06-01
Anticipated expiration: 2038-10-30
Also published as: CN109397162A

Abstract

The invention discloses a wrench, and belongs to the technical field of hand tools. This spanner is including spanner handle, the cylinder sleeve pipe, nut sleeve pipe and pawl, the cylinder sleeve pipe is including dismantling two semi-cylindrical pipes of connection, spanner handle is connected with one of two semi-cylindrical pipes, the coaxial cartridge of nut sleeve pipe is in the cylinder sleeve pipe, the nut sleeve pipe is including dismantling two semi-annular pipes of connection, there are a plurality of one-way teeth along nut sheathed tube circumference interval distribution on the sheathed tube periphery wall of nut, the sheathed tube internal perisporium of nut is the face of non-cylinder, the pawl rotationally connects on the sheathed tube internal perisporium of cylinder, pawl and one-way tooth cooperation, make the cylinder sleeve pipe can be relative the nut sleeve pipe around the sheathed tube axis unidirectional rotation of nut. The two semi-annular pipes are wrapped outside the nut, then the two semi-annular pipes are connected to form a nut sleeve, and the two semi-cylindrical pipes are wrapped outside the nut sleeve and connected to form a cylindrical sleeve, so that the wrench and the nut can be conveniently connected to a longer pipeline or shaft for tightness.

Description

Spanner

Technical Field

The invention relates to the technical field of hand tools, in particular to a wrench.

Background

The spanner is a common hand tool and is mainly used for disassembling and assembling bolts, nuts and the like.

The types of wrenches are many, and a solid wrench, an adjustable wrench, a ratchet wrench, etc. are common. The ratchet wrench is very convenient to use because the wrench does not need to be repeatedly separated from the nut or the bolt head and then clamped again when in use.

The part of the ratchet wrench connected with the nut or the bolt head is a ring, and when the ratchet wrench is used, the ratchet wrench needs to be sleeved in from one end of the nut or the bolt head and cannot be directly clamped in from the side surface of the nut or the bolt head like a common solid wrench and a monkey wrench. Thus, it is inconvenient to use a ratchet wrench for nuts that are fitted over long pipes or shafts.

Disclosure of Invention

The embodiment of the invention provides a wrench, which can be used for conveniently loosening and tightening a nut on a longer pipeline or shaft. The technical scheme is as follows:

the embodiment of the invention provides a wrench, which comprises a wrench handle, a cylindrical sleeve, a nut sleeve and a pawl, wherein the cylindrical sleeve comprises two semicylindrical pipes which are detachably connected, the wrench handle is connected with one of the two semicylindrical pipes, the nut sleeve is coaxially inserted into the cylindrical sleeve, the nut sleeve comprises two semicylindrical pipes which are detachably connected, a plurality of one-way teeth are distributed on the outer peripheral wall of the nut sleeve at intervals along the circumferential direction of the nut sleeve, the inner peripheral wall of the nut sleeve is a non-cylindrical surface, the pawl is rotatably connected to the inner peripheral wall of the cylindrical sleeve, and the pawl is matched with the one-way teeth, so that the cylindrical sleeve can rotate unidirectionally relative to the nut sleeve around the axis of the nut sleeve.

Optionally, both ends of the cylindrical sleeve have inner flanges extending inward in the radial direction, and the one-way teeth are located in the annular grooves formed by the inner flanges at both ends of the cylindrical sleeve and the inner peripheral wall of the cylindrical sleeve.

Optionally, the cylindrical sleeve has a detent mounting groove on an inner peripheral wall thereof, and one end of the detent is located in the detent mounting groove.

Optionally, the pawl is hinged to the side wall of the pawl mounting groove by a pin shaft.

Optionally, the wrench comprises at least two of the pawls, all of which are spaced circumferentially of the cylindrical sleeve.

Optionally, along the circumference of the nut sleeve, one end of each semi-ring pipe is provided with an ear plate, the other end of each semi-ring pipe is provided with one unidirectional tooth with a pin hole, and the ear plate of one of the two semi-ring pipes is connected with the unidirectional tooth with the pin hole of the other of the two semi-ring pipes through a connecting pin.

Optionally, the two semi-cylindrical tubes are connected by bolts.

Optionally, the surfaces of the two semi-cylindrical pipes, which are butted with each other, are respectively provided with screw holes, and when the two semi-cylindrical pipes are butted, the screw holes on the two semi-cylindrical pipes are aligned one by one.

Optionally, a plane is formed on the arc outer wall of at least one of the semi-cylindrical pipes, the plane is perpendicular to the axial direction of the screw hole, and the screw hole is communicated with the plane.

Optionally, the wrench handle, the cylindrical sleeve, the nut sleeve and the pawl are all stainless steel forgings.

The technical scheme provided by the embodiment of the invention has the following beneficial effects: through setting the cylinder sleeve pipe to two semicylindrical pipes that can dismantle the connection for can be through dismantling the cylinder sleeve pipe, conveniently with cylinder sleeve pipe and nut sheathed tube separation and equipment. Through setting the nut sleeve pipe to two semicircular pipes of detachable for can dismantle into two semicircular pipes with the nut sleeve pipe earlier when using, wrap two semicircular pipes outside the nut, then connect two semicircular pipes and become the nut sleeve pipe, wrap two semicylindrical pipes outside the nut sleeve pipe again, and connect into the cylinder sleeve pipe, thereby can be convenient for be connected spanner and nut at longer pipeline or epaxial and carry out the elasticity. The pawl and the one-way teeth can be mutually matched, so that the cylindrical sleeve can only rotate in one direction relative to the nut sleeve, and the nut can be conveniently and continuously loosened and tightened, and the use is convenient.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is an exploded view of a wrench according to an embodiment of the present invention;

FIG. 2 is an exploded view of a cylindrical sleeve according to an embodiment of the present invention;

fig. 3 is a schematic partial structure diagram of a wrench according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is an exploded view of a wrench according to an embodiment of the present invention. As shown in fig. 1, the wrench includes a wrench handle 10, a cylindrical sleeve 20, a nut sleeve 30, and a pawl 40.

Fig. 2 is an exploded view of a cylindrical sleeve according to an embodiment of the present invention. As shown in FIG. 2, the cylindrical sleeve 20 includes two semicylindrical tubes 21 detachably coupled, and the trigger handle 10 is coupled to one of the two semicylindrical tubes 21.

Referring to fig. 1, the nut sleeve 30 is coaxially inserted into the cylindrical sleeve 20, the nut sleeve 30 includes two semi-annular tubes 31 detachably connected, a plurality of unidirectional teeth 311 are distributed on the outer peripheral wall of the nut sleeve 30 at intervals along the circumferential direction of the nut sleeve 30, and the inner peripheral wall of the nut sleeve 30 is a non-cylindrical surface.

The pawls 40 are rotatably coupled to the inner peripheral wall of the cylindrical sleeve 20, and the pawls 40 are engaged with the one-way teeth 311 so that the cylindrical sleeve 20 can rotate in one direction about the axis of the nut sleeve 30 with respect to the nut sleeve 30.

Through setting the cylinder sleeve pipe to two semicylindrical pipes that can dismantle the connection for can be through dismantling the cylinder sleeve pipe, conveniently with cylinder sleeve pipe and nut sheathed tube separation and equipment. Through setting the nut sleeve pipe to two semicircular pipes of detachable for can dismantle into two semicircular pipes with the nut sleeve pipe earlier when using, wrap two semicircular pipes outside the nut, then connect two semicircular pipes and become the nut sleeve pipe, wrap two semicylindrical pipes outside the nut sleeve pipe again, and connect into the cylinder sleeve pipe, thereby can be convenient for be connected spanner and nut at longer pipeline or epaxial and carry out the elasticity. The pawl and the one-way teeth can be mutually matched, so that the cylindrical sleeve can only rotate in one direction relative to the nut sleeve, and the nut can be conveniently and continuously loosened and tightened, and the use is convenient.

Optionally, the wrench handle 10, the cylindrical sleeve 20, the nut sleeve 30, and the pawl 40 may all be stainless steel forgings, which may be beneficial for extending the life of the wrench. Of course, other metallic or non-metallic materials may be used.

Alternatively, the inner circumferential wall of the nut sleeve 30 may be a prismatic surface, such as a triangular prism, a quadrangular prism, a pentagonal prism, a hexagonal prism, or the like, and different nut sleeves 30 may be employed corresponding to nuts of different shapes. The same wrench may be provided with a plurality of nut sleeves 30 having different inner peripheral wall shapes, so that different nuts can be tightened by replacing the nut sleeves 30. In addition, the same wrench can be provided with a plurality of nut sleeves 30 with the same inner peripheral wall shape but different cross-sectional sizes, so that nuts with different sizes can be loosened and tightened by replacing the nut sleeves 30.

As shown in fig. 1, both ends of the cylindrical sleeve 20 may have inner flanges 211 extending radially inward, and the one-way teeth 311 are located in the inner flanges 211 of both ends of the cylindrical sleeve 20 and the annular groove 21a formed by the inner circumferential wall of the cylindrical sleeve 20. The inner flange 211 may axially limit the nut sleeve 30 to prevent the nut sleeve 30 from separating from the cylindrical sleeve 20 during use of the wrench.

Fig. 3 is a schematic partial structure diagram of a wrench according to an embodiment of the present invention. As shown in fig. 3, the cylindrical sleeve 20 may have a ratchet installation groove 21b on an inner circumferential wall thereof, and one end of the ratchet 40 is located in the ratchet installation groove 21 b. The pawl mounting groove 21b can accommodate the pawl 40, and only one end of the pawl 40, which is matched with the one-way tooth 311, is exposed out of the pawl mounting groove 21b, so that the installation of the pawl 40 is facilitated, and the pawl 40 can be protected. The pawl mounting groove 21b is of sufficient size that the pawl 40 can rotate smoothly in use.

Alternatively, the ratchet 40 may be hinged to the side wall of the ratchet mounting groove 21b by a pin 41 in a simple manner.

Referring to fig. 2, a pin insertion hole 21e may be formed in the semi-cylindrical pipe 21 at a position corresponding to the ratchet installation groove 21b, and the pin insertion hole 21e extends in the axial direction of the cylindrical sleeve 20 to facilitate installation of the pin 41. The pin shaft insertion hole 21e can penetrate through the semi-cylindrical pipe 21, so that the pin shaft 41 can be directly pulled out when the pawl 40 needs to be detached, and the operation is convenient.

As shown in fig. 3, the wrench includes two pawls 40, all of the pawls 40 being spaced circumferentially about the cylindrical sleeve 20. Through setting up two pawls 40, effort when two pawls 40 can bear the elasticity bolt simultaneously can reduce the atress of each pawl 40, also can reduce the effort that receives on every round pin axle 41 simultaneously, avoids the too big round pin axle 41 fracture of atress.

Alternatively, two pawls 40 may be provided on the same semi-cylindrical tube 21, facilitating mounting of the pawls 40. In the present embodiment, both pawls 40 are mounted on the semi-cylindrical tube 21 connected to the trigger lever 10, and in other embodiments, both pawls 40 may be mounted on the other semi-cylindrical tube 21, or one pawl 40 may be provided on each of the two semi-cylindrical tubes 21.

It should be noted that the embodiment only takes two pawls 40 as an example, a greater number of pawls 40 may be provided in other embodiments, and the plurality of pawls 40 may also be arranged at equal angular intervals to balance the stress of the nut sleeve 30.

As shown in fig. 3, the two semicylindrical tubes 21 may be connected by bolts 50. The semi-cylindrical pipe 21 can be separated and assembled by disassembling and assembling the bolt 50, and the operation is convenient.

Alternatively, the surfaces of the two semicylindrical tubes 21 that abut against each other may be respectively provided with screw holes 21c, and when the two semicylindrical tubes 21 abut against each other, the screw holes 21c of the two semicylindrical tubes 21 are aligned one by one. Thus, the two semicylindrical tubes 21 are joined to each other to form the cylindrical sleeve 20, and then the bolt 50 is inserted into the screw hole 21c and tightened, so that the two semicylindrical tubes 21 are integrally fixed to each other.

Optionally, a plane 21d is formed on the circular arc outer wall of the semi-cylindrical tube 21, the plane 21d is perpendicular to the axial direction of the screw hole 21c, and the screw hole 21c is communicated with the plane 21 d. Since the outer walls of the two semicylindrical tubes 21 are cylindrical after being butted, the bolts 50 are not conveniently fastened. By forming a flat surface 21d on the circular arc outer wall of the semicylindrical tube 21, the bolt 50 can be fastened to abut against the flat surface 21 d. Specifically, a groove 21f may be formed in the surface of the semicylindrical tube 21, and the bottom of the groove 21f may be set to be a flat surface.

As shown in fig. 1, one end of each semi-annular tube 31 is provided with an ear plate 312, and the other end of each semi-annular tube 31 is provided with a one-way tooth 311 having a pin hole 311a, along the circumferential direction of the nut sleeve 30. The lug plate 312 of one of the two semi-annular pipes 31 is coupled to the one-way teeth 311 having the pin holes 311a of the other of the two semi-annular pipes 31 by the coupling pin 313. When the two half-ring pipes 31 are butted to form the nut sleeve 30, the holes of the lug plates 312 of one half-ring pipe 31 are aligned with the pin holes 311a of the one-way teeth 311 having the pin holes 311a of the other half-ring pipe 31, so that the two half-ring pipes 31 can be integrally connected by inserting the connecting pins 313.

Optionally, two lug plates 312 may be disposed at an interval along the axial direction of the semi-annular pipe 31 at one end of each semi-annular pipe 31, when connecting the two semi-annular pipes 31, the two lug plates 312 are connected with one unidirectional tooth 311, and the two lug plates 312 are respectively located at two sides of the unidirectional tooth 311, so that the connection is more stable.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A wrench is characterized by comprising a wrench handle (10), a cylindrical sleeve (20), a nut sleeve (30) and a pawl (40), wherein the cylindrical sleeve (20) comprises two semicylindrical pipes (21) which are detachably connected, the wrench handle (10) is connected with one of the two semicylindrical pipes (21), the nut sleeve (30) is coaxially inserted into the cylindrical sleeve (20), the nut sleeve (30) comprises two semicylindrical pipes (31) which are detachably connected, the two semicylindrical pipes (21) are connected through a bolt (50), screw holes (21 c) are respectively arranged on the surfaces, which are mutually butted, of the two semicylindrical pipes (21), a groove (21 f) is arranged on the arc outer wall of one semicylindrical pipe (21), the bottom of the groove (21 f) is a plane (21 d), and the plane (21 d) is perpendicular to the axial direction of the screw holes (21 c), the screw holes (21 c) are communicated with the plane (21 d), when the two semi-cylindrical pipes (21) are butted, the screw holes (21 c) on the two semi-cylindrical pipes (21) are aligned one by one, a plurality of one-way teeth (311) are distributed on the outer peripheral wall of the nut sleeve (30) at intervals along the circumferential direction of the nut sleeve (30), the inner peripheral wall of the nut sleeve (30) is a non-cylindrical surface, the pawls (40) are rotatably connected on the inner peripheral wall of the cylindrical sleeve (20), and the pawls (40) are matched with the one-way teeth (311) to enable the cylindrical sleeve (20) to rotate around the axis of the nut sleeve (30) in one way relative to the nut sleeve (30);

the wrench comprises a plurality of nut sleeves (30), wherein the shapes of the inner peripheral walls of the nut sleeves (30) are different, or the shapes of the inner peripheral walls of the nut sleeves (30) are the same but the cross-sectional sizes of the inner peripheral walls are different;

follow the circumference of nut sleeve pipe (30), every the one end of semicircular pipe (31) all is equipped with two otic placodes (312), two otic placodes (312) are followed the axial interval of semicircular pipe (31) sets up, every the other end of semicircular pipe (31) all is equipped with one and has pinhole (311 a) one-way tooth (311), otic placode (312) of one semicircular pipe (31) in two semicircular pipes (31) through connecting pin (313) with another semicircular pipe (31) in two semicircular pipes (31) have pinhole (311 a) one-way tooth (311) are connected, just two otic placodes (312) are located respectively the both sides of one-way tooth (311).

2. The wrench according to claim 1, wherein the cylindrical sleeve (20) has inner flanges (211) extending radially inward at both ends thereof, and the one-way teeth (311) are located in annular grooves (21 a) formed by the inner flanges (211) at both ends of the cylindrical sleeve (20) and an inner peripheral wall of the cylindrical sleeve (20).

3. The wrench according to claim 1, wherein the cylindrical sleeve (20) has a pawl mounting groove (21 b) on an inner peripheral wall thereof, and one end of the pawl (40) is located in the pawl mounting groove (21 b).

4. A wrench as claimed in claim 3, wherein said ratchet (40) is hinged on the side wall of said ratchet mounting groove (21 b) by a pin (41).

5. A wrench as claimed in any one of claims 1 to 4, including at least two said pawls (40), all of said pawls (40) being spaced circumferentially of said cylindrical sleeve (20).

6. The wrench according to any one of claims 1-4, wherein the wrench handle (10), the cylindrical sleeve (20), the nut sleeve (30) and the pawl (40) are all stainless steel forgings.