CN210819309U - Helical tooth meshing type spanner - Google Patents

Abstract

The utility model provides a skewed tooth meshing type spanner, belongs to the instrument field, wrench handle links as an organic wholely with bolt wrench movement portion shell, bolt wrench movement portion shell internal rotation is provided with bolt wrench movement portion, bolt wrench movement portion shell internal periphery is provided with cyclic annular step, be provided with annular skewed tooth on the cyclic annular step mesa, bolt wrench movement portion periphery and the internal periphery of bolt wrench movement portion shell that the rotation set up match each other, also be provided with intermeshing's skewed tooth on the cyclic annular step of bolt wrench movement portion that matches each other, bolt wrench movement portion middle is provided with the plum blossom tooth hole, the plum blossom tooth hole matches for the through-hole and with nut or the outer angle of bolt spiral shell head, utilize the utility model discloses can improve the moment of torsion of spanner, can come and go the wrench movement under the condition that does not leave spiral shell head or nut, promote convenience and work efficiency of spanner, still utilize the supporting annex in the current spanner, enlarge the application range of spanner.

Description

Helical tooth meshing type spanner

Technical Field

The utility model relates to a spanner, in particular to skewed tooth meshing type spanner belongs to the instrument field.

Background

In current spanner, ratchet spanner generally only has a pawl and ratchet meshing, and inside is provided with the recess, because the reason of inside this kind of structure, its moment of torsion receives certain restriction, can only be used for less bolt wrench movement, box spanner has the spanner can't carry out the shortcoming of reversing under the condition of not breaking away from bolt or nut, it is lower to use efficiency, adjustable spanner or solid wrench etc. not only can't reverse under the condition of not dropping off bolt or nut, and can't implement the rotation in narrow and small space, above-mentioned spanner, all received certain restriction to a different extent, if can have the spanner of overcoming above-mentioned multiple shortcoming simultaneously, will be half power when working, improve work efficiency and working efficiency.

Disclosure of Invention

The shortcoming that exists to present multiple spanner, the utility model provides a skewed tooth meshing type spanner, its purpose is in order to improve the moment of torsion of spanner, comes and goes the wrench movement under the condition that does not leave spiral shell head or nut, promotes the convenience of spanner, and further, utilizes the supporting annex in the spanner now, enlarges the application range of spanner.

The technical scheme of the utility model is that: a helical tooth meshing type wrench comprises a wrench handle, wherein the wrench handle is connected with a bolt twisting part shell into a whole, a bolt twisting part is rotationally arranged in the bolt twisting part shell, annular steps are arranged on the inner periphery of the bolt twisting part shell, annular helical teeth are arranged on the table top of the annular steps, the periphery of the rotationally arranged bolt twisting part is matched with the inner periphery of the bolt twisting part shell, mutually meshed helical teeth are also arranged on the mutually matched annular steps of the bolt twisting part, a double offset ring inner hole is arranged in the middle of the bolt twisting part, and the double offset ring inner hole is a through hole and is matched with an outer corner of a nut or a bolt screw head;

further, the peripheral diameters of the upper and lower parts of the helical teeth of the bolt twisting part are different, the height of the opposite side of the helical teeth of the bolt twisting part is smaller than the corresponding height in the shell of the bolt twisting part, a compression spring is also arranged on the opposite side of the oblique side of the bolt twisting part, a spring compression ring is arranged on the compression spring, and the spring compression ring is fixed on the shell of the bolt twisting part;

further, a bearing is arranged between the bolt twisting part and the bolt twisting part which is arranged in the bolt twisting part shell in a rotating way;

furthermore, the inner hole of the double offset ring teeth can be provided with the matching accessories of a ratchet wrench and a socket wrench with corresponding specifications,

further, the compression amplitude of the compression spring is larger than the height of the helical teeth.

The utility model discloses the positive effect who has is: the wrench handle and the bolt twisting part shell are connected into a whole, so that the rotating torque of the wrench can be improved, particularly, the annular step is arranged in the bolt twisting part shell, the annular inclined teeth are arranged on the table surface of the annular step, the annular step of the bolt twisting part is also provided with the inclined teeth which are mutually meshed, when the bolt and the nut are rotated, the inclined teeth are mutually meshed, when the bolt and the nut are rotated, the annular inclined teeth are mutually separated, the torque of the wrench can be improved by utilizing the inclined tooth structure, only one pawl matched with the ratchet is arranged in the traditional ratchet wrench, the ratchet structure is thinner, the torque is limited, the plurality of inclined teeth are completely meshed in the utility model, the torque of the ratchet wrench is improved by dozens of times or even dozens of times, not only can the large bolt be twisted, but also the torque can be enlarged by utilizing the lengthened power arm of the sleeve, and compared with the traditional solid wrench, the end part of the wrench can be sleeved on the bolt head or the nut to rotate back and forth without separating from the bolt head or the nut in the rotating process; the pressing spring is arranged on the opposite side of the bolt twisting part, the bolt twisting part can be lifted along the helical teeth during reverse rotation, the pressing spring is compressed, the engagement of the helical teeth between the bolt twisting part shell and the bolt twisting part is eliminated, when the bolt or the nut is twisted, the bolt twisting part is pressed to the mutual engagement position under the action of the pressing spring, the bolt or the nut is twisted, when the bolt or the nut is used for matching with a plum blossom shaped inner hole, a ratchet wrench and a matched accessory of a socket wrench with corresponding specification or size can be utilized to twist other common bolt heads, nuts or inner square and inner hexagonal bolts with different diameters, particularly, the height of the bolt twisting part can be further prolonged by utilizing the matched accessory of the ratchet wrench and the socket wrench, the wrench end part height can be improved at the narrow position where the common solid wrench and the adjustable wrench can not go deep, at spacious space internal rotation spanner handle, use this kind of spanner, neither influence the use of spanner, can improve the moment of torsion of spanner again, enlarge the application range of spanner, utilize the utility model discloses compare with ratchet spanner, box spanner, can increase the moment of torsion of wrench, compare with general solid wrench, can improve the flexibility of convenience of spanner.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic side view of the present invention.

Fig. 3 is a schematic cross-sectional view taken along a-a in fig. 2.

Fig. 4 is a schematic structural view of a bolt twisting part.

FIG. 5 is a radial cross-sectional view of the bolt twisting portion.

Fig. 6 is a schematic view of the internal structure of the housing of the bolt twisting part.

Description of reference numerals: 11-wrench handle, 12-bolt twisting part shell, 12 a-large diameter part in the bolt twisting part shell, 12 b-small diameter part in the bolt twisting part shell, 13-bolt twisting part, 14-plum blossom tooth inner hole, 15-skewed tooth, 16-hold-down spring, 16 a-spring step, 17-pressing piece, 17 a-pressing piece step, 18-spring pressing ring and 19-fixing screw.

Detailed Description

The following describes the present invention in detail with reference to the accompanying drawings.

The technical scheme of the utility model is that: fig. 1 is a schematic view of the overall structure of the present invention, fig. 2 is a schematic view of the side structure of the present invention, and fig. 3 is a schematic view of the sectional structure along a-a in fig. 2. Skewed tooth meshing type spanner includes spanner handle 11, spanner handle 11 links as an organic wholely with bolt wrench movement portion shell 12, bolt wrench movement portion shell 12 internal rotation is provided with bolt wrench movement portion 13, bolt wrench movement portion shell 12 internal circumference is provided with cyclic annular step, be provided with annular skewed tooth 15 on the cyclic annular step mesa, 13 peripheries of bolt wrench movement portion that the rotation set up match each other with bolt wrench movement portion shell 12 internal circumference, also be provided with intermeshing's skewed tooth 15 on 13 cyclic annular steps of bolt wrench movement portion that match each other, be provided with plum blossom tooth hole 14 in the middle of the bolt wrench movement portion 13, plum blossom tooth hole 14 matches for the through-hole and with the exterior angle of nut or bolt spiral shell.

Fig. 4 is a schematic structural view of a bolt twisting portion, fig. 5 is a radial sectional view of the bolt twisting portion, and fig. 6 is a schematic structural view of the inside of a housing of the bolt twisting portion. The peripheral diameters of the upper and lower parts of the helical teeth of the bolt twisting part 13 are different, the height H of the opposite side of the helical teeth 15 of the bolt twisting part 13 is smaller than the corresponding height H in the bolt twisting part shell 12, a pressure spring 16 is arranged on the opposite side of the helical teeth 15 of the bolt twisting part 13, a spring compression ring 18 is arranged on the pressure spring 16, and the spring compression ring 18 is fixed on the bolt twisting part shell 12.

In this embodiment, the pressing spring 16 and the spring pressing ring 18 are provided with an annular pressing piece 17, and the spring pressing ring 18 uses a butterfly pressing ring.

A bearing is arranged between the bolt twisting part shell 12 and the bolt twisting part 13 which is rotatably arranged in the bolt twisting part shell, in the embodiment, the arranged bearing is not drawn in the figure, and the bolt twisting part shell rotates more lightly and smoothly after the bearing is arranged.

The inner hole 14 of the plum-blossom-shaped teeth can be provided with matching accessories of a ratchet wrench and a socket wrench with corresponding specifications, the matching accessories can be quadrilateral connecting pieces or polygonal connecting pieces, and after the connecting part is put into the inner hole 14 of the plum-blossom-shaped teeth, bolt heads or nuts of different matching accessories corresponding to different polygons can be replaced.

The pressing amplitude of the pressing spring 16 is larger than the height of the helical teeth 15 except the thickness of the pressed spring. Which would otherwise interfere with disengagement between the intermeshing helical teeth 15 and prevent reverse rotation.

In this embodiment, 12a is a large diameter portion in the bolt-twisting-portion housing, 12b is a small diameter portion in the bolt-twisting-portion housing, a spring step 16a and a pressing step 17a are further provided in the opposite direction of the bolt-twisting-portion helical tooth 15, a pressing spring 16 is provided on the spring step 16a, and an annular pressing piece 17 is provided on the pressing step 17a, and during installation, the bolt-twisting portion 13 is put in from the large diameter portion 12a in the bolt-twisting-portion housing, and when the bolt-twisting portion is put in, the spring step 16a and the pressing step 17a are made to face upward, the helical tooth 15 of the bolt-twisting portion 13 is made to face downward, the bolt-twisting-portion helical tooth 15 and the helical tooth 15 in the bolt-twisting-portion housing are made to face each other, and then the pressing spring 16, the annular pressing piece 17, and the spring pressing piece 18 are put in order, and.

When the locking nut is used, if the inner hole 14 of the quincuncial teeth faces the screw head or the nut in an upward mode, the other side faces upwards and is used for loosening the bolt or the nut.

In this embodiment, when the helical teeth 15 on the bolt twisting portion 13 are upward, the lower side of the internal hole 14 of the double offset ring teeth faces to the bolt or the nut, the inclined direction of the helical teeth 15 on the bolt twisting portion 13 is rightward, that is, an acute angle is formed between the helical teeth 15 and the annular step, when the wrench handle 11 rotates counterclockwise, the pair of engaged helical teeth 15 are separated, and when the wrench handle 11 rotates clockwise, the pair of engaged helical teeth 15 are engaged with each other, so that the bolt or the nut can be locked. Conversely, when the helical teeth 15 of the bolt twisting portion 13 are downward, the wrench handle 11 is rotated clockwise, the pair of engaged helical teeth 15 are separated, and when the wrench handle 11 is rotated counterclockwise, the pair of engaged helical teeth 15 are engaged with each other, so that the bolt or the nut can be loosened.

The utility model can improve the rotation torque of the wrench by connecting the wrench handle 11 and the shell 12 of the bolt twisting part 13 into a whole, especially, the annular step is arranged in the shell 12 of the bolt twisting part 13, the annular step surface is provided with the annular inclined teeth 15, the annular step of the bolt twisting part 13 is also provided with the inclined teeth 15 which are meshed with each other, when the bolt and the nut are rotated, the inclined teeth 15 are meshed with each other and separated from each other when reversed, the torque of the wrench can be improved by utilizing the structure of the inclined teeth 15, the traditional ratchet wrench is only provided with a pawl which is matched with the ratchet wheel, the ratchet wheel is thinner in structure, the torque is limited, the inside of the utility model is completely meshed between a plurality of inclined teeth 15, the torque of the ratchet wheel wrench can be improved by dozens of times or even dozens of times, not only can twist large bolts, but also the power arm can be lengthened by utilizing the sleeve, the torque is enlarged, and compared with the traditional solid wrench, the wrench can be sleeved on a bolt head or a nut in the process of twisting the bolt or the nut and can rotate back and forth under the condition of not departing from the bolt head or the nut; the pressing spring 16 is arranged on the opposite side of the helical teeth of the bolt twisting part 13, so that the bolt twisting part 13 can be lifted along the helical teeth 15 during reverse rotation, the pressing spring 16 is compressed at the same time, the engagement between the bolt twisting part shell 12 and the bolt twisting part 13 is eliminated, when a bolt or a nut is twisted, the bolt twisting part 13 is pressed to the mutual engagement position under the action of the pressing spring 16, the bolt or the nut is twisted, except for the bolt or the nut matched with a plum blossom inner hole, a ratchet wrench and a matched accessory of a socket wrench with corresponding specification or size can be used for twisting other common screw heads, nuts or inner square and inner hexagonal bolts and the like with different diameters, particularly, the height of the bolt twisting part 13 can be further prolonged by using the matched accessory of the ratchet wrench and the socket wrench, and the narrow position which can not be deeply penetrated by the common solid wrench and the adjustable wrench can be realized, the height of the end part of the wrench is increased, and the wrench handle is rotated in a wide space. Use this kind of spanner, neither influence the use of spanner, can improve the moment of torsion of spanner again, enlarge the application range of spanner, utilize the utility model discloses compare with ratchet spanner, box spanner, can increase the moment of torsion of wrench, compare with general solid wrench, can improve the nimble activity of convenience of spanner.

Claims (5)

1. The utility model provides a skewed tooth meshing type spanner, includes the spanner handle, its characterized in that: spanner handle and bolt wrench movement portion shell link as an organic wholely, bolt wrench movement portion shell internal rotation is provided with bolt wrench movement portion, bolt wrench movement portion shell internal periphery is provided with cyclic annular step, be provided with annular skewed tooth on the cyclic annular step mesa, bolt wrench movement portion periphery and the bolt wrench movement portion shell internal periphery that the rotation set up match each other, also be provided with intermeshing's skewed tooth on the bolt wrench movement portion cyclic annular step of mutual matching, bolt wrench movement portion middle is provided with the plum blossom tooth hole, the plum blossom tooth hole matches for the through-hole and with the outer angle of nut or bolt spiral shell head.

2. A skewed tooth engagement wrench as claimed in claim 1, wherein: the bolt twisting part is characterized in that the peripheral diameters of the upper part and the lower part of the helical teeth of the bolt twisting part are different, the height of the opposite side of the helical teeth of the bolt twisting part is smaller than the corresponding height in the shell of the bolt twisting part, a compression spring is further arranged on the opposite side of the oblique side of the bolt twisting part, a spring compression ring is arranged on the compression spring, and the spring compression ring is fixed on the shell of the bolt twisting part.

3. A skewed tooth engagement wrench as claimed in claim 1, wherein: and a bearing is arranged between the bolt twisting part and the bolt twisting part which is arranged in the bolt twisting part shell in a rotating way.

4. A skewed tooth engagement wrench as claimed in claim 1, wherein: the inner hole of the double offset ring tooth can be provided with matching accessories of a ratchet wrench and a socket wrench with corresponding specifications.

5. A skewed tooth engagement wrench as claimed in claim 2, wherein: the compression amplitude of the compression spring is larger than the height of the helical teeth.

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