CN109773698A - A kind of spanner - Google Patents
A kind of spanner Download PDFInfo
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- CN109773698A CN109773698A CN201711130195.1A CN201711130195A CN109773698A CN 109773698 A CN109773698 A CN 109773698A CN 201711130195 A CN201711130195 A CN 201711130195A CN 109773698 A CN109773698 A CN 109773698A
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- Prior art keywords
- fixture block
- holes
- groove
- spanner
- sets
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Abstract
The present invention provides a kind of spanner, including pulls body, sets of holes, clamping device and holding holes, the sets of holes through or be recessed in and described pull body surface face；The clamping device is set in the sets of holes；The holding holes are set in the middle part of the clamping device；The aperture size of the holding holes is adjustable.The advantage of the invention is that, in the case where the size of gripped object and holding holes has smaller discrepancy, the internal diameter of its holding holes can finely tune, to eliminate the gap between spanner and bolt or nut, so that the clamping face of spanner and bolt or nut table face good fit, it effectively prevent skidding, enhances user's feel.In addition, the present invention can be such that the gripped object loosened after being screwed is fixed on the holder portion, it will not fall easily, so as to effectively improve working efficiency.
Description
Technical field
The present invention relates to a kind of handheld tools, particularly to a kind of spanner.
Background technique
Spanner is a kind of common installation and removal tool, is that the screw threads such as bolt, screw, nut are twisted using lever principle
The handheld tool of component.Spanner is usually formed with the opening or sets of holes of clamping screwed part in the one or both ends of shank, when use
Threadingly direction of rotation applies external force in shank, can twist screwed part.
It is equipped with the spanner of sets of holes in shank one or both ends, commonly referred to as sets of holes spanner, the cross section of sets of holes is designed
For different shape, to be suitable for various bolts of different shapes or nut, such as die nut.However, spanner, bolt or nut
Size may generate certain tolerance in production, when in use, spanner and bolt or nut surface can exist certain
Gap is easy to skid, influences the feel in operating process to cause clamping face fitting effect poor.User when screwing accessory,
Reply cannot be discovered in the shortest time and make by the case where accessory loosens occur, and be fallen after be easy to causeing the accessories such as nut to unscrew
It falls, it is very troublesome that the nut of small volume is found in some narrow spaces.On the other hand, existing some nuts etc. are matched
Part, dimensions have that metric and English is mixed, will result in spanner sets of holes in this way and bolt specification mismatches, and naked eyes
It is difficult to the difference precisely estimated Er Zhe dimensionally again, is easy to appear the unmatched situation of the accessories such as spanner and nut, causes
The damage of the accessories such as nut surface.In addition, the accessories such as bolt, nut are exposed in air, burn into may be generated and the feelings such as got rusty
Condition will also result in the spanner set unmatched situation of the fitting dimensions such as pore size and bolt, nut so that fitting dimension becomes smaller.
Those skilled in the art are dedicated to researching and developing a kind of new spanner, and the internal diameter of sets of holes or clamping part can occur micro-
It adjusts, in the case where the size of the size of gripped object (such as bolt or nut) and clamping part internal diameter has smaller discrepancy, clamping
Portion can automatically adjust internal diameter, to adapt to the size of gripped object, between eliminating between spanner and bolt or nut
Gap enhances user's feel so that the clamping face of spanner and bolt or nut table face good fit, effectively prevent skidding.
Summary of the invention
The object of the present invention is to provide a kind of spanners, to solve spanner clamping part present in the sets of holes spanner of the prior art
Gap is larger between gripped object, clamping face is bonded the technical problems such as effect is poor, easily skids, is inconvenient.
In order to solve the above technical problems, the present invention provides a kind of spanner, including pull body, sets of holes, clamping device and clamping
Hole, the sets of holes through or be recessed in and described pull body surface face；The clamping device is set in the sets of holes；The holding holes are set
In the middle part of the clamping device；The aperture size of the holding holes is adjustable.
The clamping device includes more than two fixture blocks, is oppositely arranged and surrounds the holding holes；Wherein, the holding holes
Inner hole wall include described two side walls with upper fixture block；Described two with the distance between upper fixture block is adjustable.
Further, in different embodiments, a fixture block includes fixture block body, is a part of cylinder；Clamp port passes through
Wear the top and bottom of the fixture block body, opening direction is towards another fixture block；And clamping face, it is the interior of the clamp port
Side wall.
Further, in different embodiments, the clamping device further includes the first groove, is recessed in the sets of holes
Side wall；Second groove is recessed in a fixture block lateral wall；And it is oppositely arranged with first groove；And first elastic component, it is caught in
To first groove and second groove；Wherein, first groove, second groove, first elastic component
Shape is a part of annular.
Further, in different embodiments, the spanner further includes fixture block mounting groove, is recessed on the inside of the sets of holes
Wall, at least a fixture block are mounted to the fixture block mounting groove.
Further, in different embodiments, the clamping device further includes bracket, is mounted in the sets of holes；
An at least fixture block is installed by movable to the bracket.
Further, in different embodiments, the bracket includes column frame body, snaps into the sets of holes；Frame body is logical
Hole, through the top and bottom of the column frame body；And more than two mounting holes, the column frame body side wall is extended through,
And it is connected to the frame body through-hole；Wherein, by movable or fixedly mounted there are a fixture block, the frame body in each mounting hole
The clamping face of the inner sidewall of through-hole and more than two fixture blocks surrounds the holding holes.
Further, in different embodiments, the column frame body lateral wall and the sets of holes inner sidewall are tangent；It is described
The top and bottom end of column frame body lateral wall are respectively equipped with a flange outstanding；Two flanges are fastened on the table for pulling body two sides
Face.
Further, in different embodiments, the spanner further includes ratchet ring, turnable installation to the sets of holes
It is interior, and it is sheathed on the clamp outer.
Further, in different embodiments, the clamping device further includes the first groove, is recessed in the ratchet ring
Inner sidewall；Second groove is recessed in a fixture block lateral wall；And it is oppositely arranged with first groove；And first elastic component, card
Enter to first groove and second groove；Wherein, first groove, second groove, first elastic component
Shape be annular a part.
Further, in different embodiments, the spanner further includes fixture block mounting groove, is recessed in the ratchet ring
Side wall, at least a fixture block are installed to the fixture block mounting groove.
Further, in different embodiments, an at least fixture block is installed by movable to the fixture block mounting groove；
The fixture block includes the first locating slot, is recessed in the fixture block towards the surface of the fixture block mounting groove bottom side；And second
Elastic component is set in first locating slot, and one end and the first positioning trench bottom are tangent, the other end and the fixture block
It is tangent that trench bottom is installed.
Further, in different embodiments, an at least fixture block is mounted in the fixture block mounting groove；The fixture block
Including the second locating slot, it is recessed in surface of the fixture block towards another fixture block side；Ball is positioned, set on second locating slot
It at notch and third elastic component, is set in second locating slot, one end and the second positioning trench bottom are tangent or even
It connects, the other end is connected to the positioning ball；A part of the positioning ball surface and the clamping face of more than two fixture blocks surround
The holding holes.
Further, in different embodiments, the clamping device further includes bracket, is mounted to the ratchet ring
It is interior；An at least fixture block is installed by movable to the bracket.
Further, in different embodiments, the bracket includes column frame body, is snapped on the inside of the ratchet ring；
Frame body through-hole, through the top and bottom of the column frame body；And more than two mounting holes, extend through the column frame body
Side wall, and it is connected to the frame body through-hole；Wherein, by movable or fixedly mounted there are a fixture block, institute in each mounting hole
The clamping face of the inner sidewall and more than two fixture blocks of stating frame body through-hole surrounds the holding holes.
Further, in different embodiments, the column frame body lateral wall and the ratchet ring inner sidewall are tangent；Institute
The top and bottom end for stating column frame body lateral wall are respectively equipped with a flange outstanding；Two flanges are fastened on the ratchet ring two sides
Surface.
Further, in different embodiments, the spanner further includes sets of holes groove, is recessed in the inside of the sets of holes
Wall；Pawl is set in the sets of holes groove, and engages with the ratchet ring；And the 4th elastic component, it is set to the sets of holes groove
Interior, one end is connected to the sets of holes bottom portion of groove or inner wall, and the other end is connected to the pawl.
Further, in different embodiments, the ratchet ring includes driving portion, is set on the inside of the ratchet ring, Gu
On the outside of the fixed extremely described clamping device；And the cyclic annular gear teeth, it is set on the outside of the ratchet ring；The pawl includes ratchet block, one
Side and the sets of holes recess sidewall are tangent；Ratchet is mutually nibbled set on the another side of the ratchet block, and with the cyclic annular gear teeth
It closes；And elastic component mounting groove, it is set to the pawl bottom surface, to install the 4th elastic component；Wherein, the 4th elasticity
Part one end is connected to the sets of holes bottom portion of groove or inner wall, and the other end is connected to the pawl.
Further, in different embodiments, the cross section of the holding holes is kidney-shaped, triangle, rectangle, hexagon
Or octagon.
Further, in different embodiments, the material of the bracket is rigid plastics.
The beneficial effects of the present invention are provide a kind of spanner, the internal diameter of clamping part can finely tune, in quilt
In the case that the size of clamping object and clamping part has smaller discrepancy, clamping part can automatically adjust internal diameter, be pulled with eliminating
Gap between hand and bolt or nut, so that the clamping face of spanner and bolt or nut table face good fit, effectively prevent beating
It is sliding, enhance user's feel.In addition, the present invention can be such that the gripped object loosened after being screwed is fixed on the holder portion,
It will not fall easily, so as to effectively improve working efficiency.
Detailed description of the invention
Fig. 1 is overall structure diagram in the embodiment of the present invention 1；
Fig. 2 is the decomposition texture schematic diagram of clamping device in the embodiment of the present invention 1；
Fig. 3 is the structural schematic diagram that removal clamping device in body one end is pulled in the embodiment of the present invention 1；
Fig. 4 is the horizontal cross-section structure diagram of one end in the embodiment of the present invention 1 equipped with clamping device；
Fig. 5 is the longitudinal profile structure schematic of one end in the embodiment of the present invention 1 equipped with clamping device；
Fig. 6 is another horizontal cross-section structure diagram of one end in the embodiment of the present invention 1 equipped with clamping device；
Fig. 7 is the horizontal cross-section structure diagram of one end in the embodiment of the present invention 2 equipped with clamping device；
Fig. 8 is the structural schematic diagram of bracket in the embodiment of the present invention 2；
Fig. 9 is the longitudinal profile structure schematic of one end in the embodiment of the present invention 2 equipped with clamping device；
Figure 10 is the horizontal cross-section structure diagram of one end in the embodiment of the present invention 3 equipped with clamping device；
Figure 11 is the horizontal cross-section structure diagram of one end in the embodiment of the present invention 4 equipped with clamping device.
Component mark is as follows in figure:
100 pull body, 200 sets of holes, 300 clamping devices, 400 gripped objects；
1 first fixture block, 2 second fixture blocks, 3 holding holes, 4 brackets；
11 first fixture block bodies, 12 first clamp ports, 13 first clamping faces；
21 second fixture block bodies, 22 second clamp ports, 23 second clamping faces；
24 first locating slots, 25 second elastic components, 26 second locating slots, 27 positioning balls；
28 third elastic components, 29 third locating slots, 30 the 5th elastic components；
31 first grooves, 32 second grooves, 33 first elastic components, 34 fixture block mounting grooves, 35 sets of holes grooves；
41 column frame bodies, 42 frame body through-holes, 43 first mounting holes, 44 second mounting holes, 45 bayonets；
51 ratchet rings, 52 pawls, 53 the 4th elastic components, 54 ratchet ring grooves；
411 flanges, 412 flanges；521 ratchet blocks, 522 ratchets, 523 elastic component mounting grooves.
Specific embodiment
Below with reference to Figure of description complete description the preferred embodiment of the present invention, keep its technology contents more clear and just
In understanding.The present invention can be emerged from by many various forms of embodiments, and protection scope is not limited only in text
The embodiment mentioned.
The direction term that the present invention is previously mentioned, for example, above and below, front, rear, left and right, inside and outside, side, top, bottom, top
End, bottom end, end etc. are only the directions in attached drawing, are used only to the explanation and illustration present invention, rather than are used to limit the present invention
Protection scope.
When certain components are described as " " another component "upper", the component can be placed directly within another component
On；There may also be an intermediate member, the component is placed on the intermediate member, and the intermediate member is placed in another component
On.When a component is described as " installation to " or " being connected to " another component, the two can be understood as direct " installation " or
" connection " or a component " are installed extremely " indirectly by an intermediate member or " being connected to " another component.
Embodiment 1
As shown in Figure 1, the present embodiment provides a kind of spanners, including pull body 100, sets of holes 200 and clamping device 300, set
Hole 200, which is run through, pulls one end of body 100, is perhaps recessed in and pulls the surface clamping device 300 of 100 side of body and be fixed to or can turn
Dynamic formula is installed to sets of holes 200.
As shown in Fig. 1~2, clamping device 300 includes the first fixture block 1, the second fixture block 2 and the holding holes 3 being oppositely arranged.
First fixture block 1 and the second fixture block 2 are installed by movable to sets of holes 200, the distance between the first fixture block 1 and the second fixture block 2
It is adjustable.Holding holes 3 are set to 300 middle part of clamping device, and holding holes 3 are sheathed on outside a gripped object 400, gripped object
400 preferred bolts or nut etc..
First fixture block 1 includes the first fixture block body 11, the first clamp port 12 and the first clamping face 13.First fixture block body 11 is one
A part of cylinder；First clamp port 12 is through to its bottom, the opening of the first clamp port 12 from the top of the first fixture block body 11
Direction the second fixture block 2 of direction；First clamping face 13 is the inner sidewall of the first clamp port 12.
Second fixture block 2 includes the second fixture block body 21, the second clamp port 22 and the second clamping face 23.Second fixture block body 11 is one
A part of cylinder；Second clamp port 22 is through to its bottom, 22 side of opening of the second clamp port from the top of the second fixture block body 21
To the first fixture block 1 of direction；Second clamping face 23 is the inner sidewall of the second clamp port 22.
In the present embodiment, two fixture blocks 1,2 can surround a complete circle ring column, it is preferable that the first fixture block 1 is four
/ tri- circle ring columns, the second fixture block 2 are a quarter circle ring column.
Holding holes 3 are formed between two fixture blocks 1,2, specifically, holding holes 3 are by the first clamping face 13 and the second folder
The hexagonal hole that face 23 surrounds is held, is adapted with the shape of gripped object 400 (such as bolt or nut), 3 inside of holding holes is defined
It is gripping width that the interior electrical path length at gripped object 400, which can effectively be clamped,.In the present embodiment, in the first fixture block 1 and the second folder
On central axes (central symmetry axis) direction of block 2, the distance between the first fixture block 1 and the second fixture block 2 are the clamping of holding holes 3
Width；On the central axes direction of the first fixture block 1 and the second fixture block 2, the aperture size of holding holes 3 is the clamping of holding holes 3
Width.Due to the distance between the first fixture block 1 and the second fixture block 2 be it is adjustable, the aperture size of holding holes 3 is can
It adjusts, the gripping width of holding holes 3 is adjustable.
As shown in figures 2-3, clamping device 300 further includes the first groove 31, the second groove 32 and the first elastic component 33.The
One groove 31 is recessed in 200 inner sidewall of sets of holes；Second groove 32 is recessed in 1 lateral wall of the first fixture block；Second groove 32 and first
Groove 31 is oppositely arranged, the first groove 31, the second groove 32 cross section be annular a part, it is preferable that about four/
Three fan rings.A first elastic component 33 preferably circlip is caught in the first groove 31 and the second groove 32, for connect pull body 100 and
First fixture block 1.The shape of the circlip is corresponding with the shape of the first groove 31 and the second groove 32, the cross section of the circlip
It also is a part of annular, it is preferable that about 3/4ths fan rings.
Low-angle sliding can occur in the first groove 31, the second groove 32 for the first elastic component 33 (i.e. circlip), so that
Small-angle Rotation can occur relative to sets of holes 200 for the first fixture block 1, and the first elastic component 33 has certain elasticity, so as to the first folder
Block 1 can be mounted in sets of holes 200, and minimize the gap between the first fixture block 1 and sets of holes 200.
As shown in Figure 2-5, the present embodiment further includes fixture block mounting groove 34, and cross section is crescent, is recessed in sets of holes
200 inner sidewall, the second fixture block 2 are installed by movable to fixture block mounting groove 34.Second fixture block 2 include one or two the
A positioning groove 24 and one or two second elastic component 25.First locating slot 24 is recessed in the second fixture block 2 and installs towards fixture block
The surface of 34 bottom side of slot；Second clamping face 23 includes two planes, and it is flat that two the first locating slots 24 respectively correspond the two
Face.A second elastic component 25 preferably helical spring is set in one first locating slot 24, one end and 24 bottom phase of the first locating slot
It cuts or connects, the other end and 34 bottom of fixture block mounting groove are tangent or connect.
When clamping device 300 leaves unused, second elastic component 25 is relaxed state, and clamping device 300 is in an idle state
Clamp 3 width of holding holes that hole width is less than under its use state.
It is when clamping device 300 in use, external in gripped object 400 (such as bolt or nut) by 3 sets of holding holes, it can disappear
Except the gap between the spanner and gripped object 400, under 2 collective effect of the first fixture block 1 and the second fixture block, the first clamping face
13 are bonded and are clamped with the second clamping face 23 with 400 outer surface of gripped object, so that the clamping face 13,23 and bolt of spanner
Or nut table face good fit, it effectively prevent skidding.
Fig. 5 is working state schematic representation of the present embodiment in clamping dimension hex nut bigger than normal.As shown in figure 5, working as
When bigger than normal by the size of aid object (such as bolt or nut), two 25 stress of the second elastic component are compressed, and the second fixture block 2 is towards folder
34 bottom surface direction of block mounting groove is mobile, and there are certain intervals between 2 both ends of 1 both ends of the first fixture block and the second fixture block.By aid object
Size it is bigger, the second fixture block 2 needs mobile distance bigger, rotates between preceding first fixture block, 1 both ends and 2 both ends of the second fixture block
Gap it is also bigger；Under limiting condition, the second fixture block 2 can even be close to 34 bottom surface of fixture block mounting groove.When gripped object 400
When needing to be loosened or be tightened, firstly, pull body 100 along hand of spiral clockwise or counterclockwise, 2 phase of the second fixture block
Small-angle Rotation is occurred for the first fixture block 1, one end of the first fixture block 1 is bonded with one end of the second fixture block 2, and the second fixture block 2 is tight
Patch 34 bottom surface of fixture block mounting groove or side, two fixture blocks lock gripped object 400；Then, pull body 100 along hand of spiral into
One step clockwise or counterclockwise, can make gripped object 400 (such as bolt or nut) be loosened or be tightened, loosening or
In rundown process, gripped object 400 is clamped by two fixture blocks always, will not be fallen easily, can be effectively improved working efficiency.
Fig. 6 is working state schematic representation of the present embodiment in clamping dimension hex nut less than normal, as shown in fig. 6, working as
When less than normal by the size of aid object (such as bolt or nut), 1 both ends of the first fixture block fit with 2 both ends of the second fixture block, the second folder
Block 2 is towards far from the movement of 34 bottom surface direction of fixture block mounting groove, and there are larger gaps with 34 bottom of fixture block mounting groove for the second fixture block 2.Quilt
The size for accommodating object is smaller, and 2 moving distance of the second fixture block is bigger, the gap between 34 bottom of the second fixture block 2 and fixture block mounting groove
Also bigger.When gripped object 400 needs loosened or be tightened when, firstly, pull body 100 along hand of spiral clockwise or the inverse time
Needle rotation, the first fixture block 1 and the second fixture block 2, which are driven, occurs Small-angle Rotation relative to sets of holes 200,1 both ends of the first fixture block
Opposite sliding occurs for the end face at end face and 2 both ends of the second fixture block, so that the second fixture block 2 withstands on the bottom surface or side of fixture block mounting groove 34
Face, the first fixture block 1 lock gripped object 400 with the second fixture block 2.Smaller by the size of aid object, the second fixture block 2 is relative to set
The angle that hole 200 rotates is also bigger.Then, pull body 100 along hand of spiral further clockwise or counterclockwise, can make by
Clamping object 400 (such as bolt or nut) loosened or be tightened, loosen or rundown process in, gripped object 400 is always by two
A fixture block clamps, and will not fall easily, can effectively improve working efficiency.
With in the approximate other embodiments of the present embodiment, clamping device 300 can also include three with upper fixture block, also by
In installation to sets of holes 200；Holding holes 3 are formed between multiple fixture blocks, at least one fixture block in multiple fixture blocks is pacified by movable
It is filled to the inner sidewall of sets of holes 200, the distance between multiple fixture blocks are adjustable；The width of holding holes 3 at least one direction
Degree is adjustable.When pulling body 100 and tentatively rotating along screw thread, multiple fixture blocks lock gripped object 400；When pulling body 100
When further rotating along hand of spiral, gripped object 400 is tightened or loosens.
With in the approximate other embodiments of the present embodiment, the cross sections of holding holes 3 can for kidney-shaped, triangle, rectangle,
Hexagon or octagon etc. respectively correspond the gripped object 400 (such as bolt or nut) of different shape, different size.
With the approximate other embodiments of the present embodiment, as the second fixture block 2, the first fixture block 1 can also can be lived
Dynamic formula is installed to a fixture block mounting groove 34.In this way, two fixture blocks are all movably, so as to more greatly adjust
The distance between two fixture blocks, and adjust the width of holding holes.
The beneficial effect of the present embodiment is, provides a kind of spanner, is set in sets of holes there are two mobilizable fixture block, so that
The width of holding holes can small range adjustment.In the case where the size of gripped object and clamping part has smaller discrepancy, holding holes
Internal diameter can be automatically adjusted, to eliminate the gap between spanner and bolt or nut so that the clamping face of spanner with pressed from both sides
Object surface good fit is held, effectively prevent skidding, enhances user's feel.In addition, the present invention can make the quilt loosened after being screwed
Clamping object can be fixed on the holder portion, will not be fallen easily, so as to effectively improve working efficiency, be effectively prevent being pressed from both sides
It is destroyed to hold object (bolt or nut etc.).
Embodiment 2
The technical characteristic of the present embodiment is largely same as Example 1, the distinguishing technical feature is that, in embodiment 2, folder
Holding device 300 includes the first fixture block 1 and the second fixture block 2 being oppositely arranged, and further includes holding holes 3 and bracket 4.Bracket 4 is ring
Shape cylinder is mounted in sets of holes 200, and the first fixture block 1 is fixed to bracket 4, and the second fixture block 2 is installed by movable to bracket
4, the distance between the first fixture block 1 and the second fixture block 2 are adjustable.
As shown in Fig. 7~8, it is cylindrical body outside column frame body 41 that bracket 4, which includes column frame body 41 and frame body through-hole 42,
Snap into sets of holes 200；Frame body through-hole 42 runs through the top and bottom of column frame body 41, and 42 cross section of frame body through-hole is hexagon.
41 lateral wall of column frame body and 200 inner sidewall of sets of holes are tangent；It is prominent that the top and bottom end of 41 lateral wall of column frame body are respectively equipped with one
Flange 411,412 out；Two flanges 411,412, which are fastened on, pulls 100 two sides of body, and bracket 4 is mounted in sets of holes 200.Column
The material of frame body 41 is rigid plastics, has certain hardness and toughness.
It is set on 4 lateral wall of bracket there are two bayonet 45 relative to each other, it is opposite with 200 inner sidewall of sets of holes buckle outstanding to set
It sets, bracket 4 to be fixed in sets of holes 200, so that it will not rotate or move.
As shown in Fig. 8~9, bracket 4 further includes two mounting holes, i.e. the first mounting hole 43, the second mounting hole 44 pass through respectively
The side wall of prick post shape frame body 41, and it is connected to frame body through-hole 42.First fixture block 1 is fixed to the mounting hole 43 of bracket 4, the second folder
Block 2 is installed by movable to the mounting hole 44 of bracket 4.
First fixture block 1, the second fixture block 2 are all V-arrangement fixture block, surround holding holes 3 jointly with frame body through-hole 42.Specifically,
The inner sidewall of frame body through-hole 42 and the first clamping face 13, the second clamping face 23 surround holding holes 3, are hexagonal hole, and are pressed from both sides
The shape for holding object 400 (such as bolt or nut) is adapted.It can effectively be clamped on the inside of definition holding holes 3 interior at the gripped object
Electrical path length is gripping width.In the present embodiment, in central axes (central symmetry axis) direction of the first fixture block 1 and the second fixture block 2
On, the distance between the first fixture block 1 and the second fixture block 2 are the gripping width of holding holes 3；In the first fixture block 1 and the second fixture block 2
Central axes direction on, the aperture size of holding holes 3 is the gripping width of holding holes 3.Due to the first fixture block 1 and the second fixture block
The distance between 2 be it is adjustable, therefore, the aperture size of holding holes 3 be it is adjustable, the gripping width of holding holes 3 is can
It adjusts.
The present embodiment further includes fixture block mounting groove 34, and cross section is crescent, is recessed in the inner sidewall of sets of holes 200, the
Two fixture blocks 2 are installed by movable to fixture block mounting groove 34.Second fixture block 2 includes two the first locating slots 24 and two the
Two elastic components 25.First locating slot 24 is recessed in the second fixture block 2 towards the surface of 34 bottom side of fixture block mounting groove；Second clamping
Face 23 includes two planes, and two the first locating slots 24 respectively correspond the two planes.The preferred helical spring of second elastic component 25,
In one first locating slot 24, one end and 24 bottom of the first locating slot are tangent or connect, the other end and fixture block mounting groove
34 bottoms are tangent or connect.
When clamping device 300 leaves unused, second elastic component 25 is relaxed state, and clamping device 300 is in an idle state
Clamp 3 width of holding holes that hole width is less than under its use state.
It is in clamping device 300 in use, external in gripped object 400 (such as bolt or nut) by 3 sets of holding holes, it can disappear
Except the gap between spanner and gripped object 400, under 4 collective effect of the first fixture block 1, the second fixture block 2 and bracket, the first clamping
Face 13 is bonded and is clamped with the second clamping face 23 with 400 outer surface of gripped object, so that the clamping face 13,23 and spiral shell of spanner
Bolt or nut table face good fit, effectively prevent skidding.
When bigger than normal by the size of aid object (such as bolt or nut), two 25 stress of the second elastic component are compressed, and second
Fixture block 2 is mobile towards 34 bottom surface direction of fixture block mounting groove, and there are certain intervals between 2 both ends of bracket 4 and the second fixture block.It is accommodated
The size of object is bigger, and the second fixture block 2 needs mobile distance bigger, rotate preceding first fixture block, 1 both ends and 2 both ends of the second fixture block it
Between gap it is bigger, under limiting condition, the second fixture block 2 can even be close to 34 bottom surface of fixture block mounting groove.When gripped object 400
When needing to be loosened or be tightened, firstly, pull body 100 along hand of spiral clockwise or counterclockwise, 2 quilt of the second fixture block
It drives and Small-angle Rotation occurs relative to bracket 4, the gap between 2 one end of the second fixture block and bracket 4 is eliminated, the second fixture block 2
It is close to 34 bottom surface of fixture block mounting groove or side, the first fixture block 1 locks gripped object 400 with the second fixture block 2 and bracket 4；Then,
Body 100 is pulled along hand of spiral further clockwise or counterclockwise, gripped object 400 (such as bolt or nut) quilt can be made
Loosen or be tightened, loosen or rundown process in, gripped object 400 is clamped always, will not be fallen easily, can be effectively improved
Working efficiency.
When less than normal by the size of aid object (such as bolt or nut), bracket 4 fits with 2 both ends of the second fixture block, and second
Fixture block 2 is towards far from the movement of 34 bottom surface direction of fixture block mounting groove, and there are larger gaps with 34 bottom of fixture block mounting groove for the second fixture block 2.
Smaller by the size of aid object, 2 moving distance of the second fixture block is bigger, between 34 bottom of the second fixture block 2 and fixture block mounting groove between
Gap is also bigger.When the needs of gripped object 400 are loosened or are tightened, firstly, pulling body 100 along screw thread clockwise or counterclockwise
Rotation, bracket 4 and the second fixture block 2, which are driven, occurs Small-angle Rotation relative to sets of holes 200, the end face at 1 both ends of the first fixture block with
Opposite sliding occurs for the end face at 2 both ends of the second fixture block, so that the second fixture block 2 withstands on the bottom surface or side of fixture block mounting groove 34, the
One fixture block 1 locks gripped object 400 with the second fixture block 2 and bracket 4.It is smaller by the size of aid object, the second fixture block 2 relative to
The angle that sets of holes 200 rotate is also bigger.Body 100 is pulled along hand of spiral further clockwise or counterclockwise, can make to be pressed from both sides
Object 400 (such as bolt or nut) is held to be loosened or be tightened, loosen or rundown process in, gripped object 400 is clamped always,
It will not fall easily, working efficiency can be effectively improved.
The other technical characteristics of the present embodiment are same as Example 1, and this will not be repeated here.
With the approximate other embodiments of the present embodiment, clamping device 300 can also include three with upper fixture block, bracket
4 have an at least mounting hole, extend through 41 side wall of column frame body, and be connected to frame body through-hole 42.Pacified in each mounting hole
Equipped with a fixture block, wherein an at least fixture block is installed by movable into the mounting hole of bracket 4, other fixture blocks are fixed to
Mounting hole.The clamping face of the inner sidewall of frame body through-hole 42 and multiple fixture blocks surrounds holding holes 3, and the distance between multiple fixture blocks are can
It adjusts；The width of holding holes 3 at least one direction is adjustable.It is more when pulling body 100 and tentatively being rotated along screw thread
A fixture block locks gripped object 400；When pulling body 100 and being further rotated along hand of spiral, gripped object 400 be tightened or
It loosens.
With in the approximate other embodiments of the present embodiment, the cross sections of holding holes 3 can for kidney-shaped, triangle, rectangle,
Hexagon or octagon etc. respectively correspond the gripped object (such as bolt or nut) of different shape, different size.
With the approximate other embodiments of the present embodiment, as the second fixture block 2, the first fixture block 1 can also can be lived
Dynamic formula is installed to a fixture block mounting groove 34.In this way, two fixture blocks are all movably, so as to more greatly adjust
The distance between two fixture blocks, and adjust the width of holding holes.
The beneficial effect of the present embodiment is, provides a kind of spanner, is set in sets of holes there are two mobilizable fixture block, so that
The width of holding holes can small range adjustment.In the case where the size of gripped object and clamping part has smaller discrepancy, holding holes
Internal diameter can be automatically adjusted, to eliminate the gap between spanner and bolt or nut so that the clamping face of spanner with pressed from both sides
Object surface good fit is held, effectively prevent skidding, enhances user's feel.In addition, the present invention can make the quilt loosened after being screwed
Clamping object can be fixed on the holder portion, will not be fallen easily, so as to effectively improve working efficiency, be effectively prevent being pressed from both sides
It is destroyed to hold object (bolt or nut etc.).
Embodiment 3
As shown in Figure 10, the technical characteristic of the present embodiment is largely same as Example 1, the distinguishing technical feature is that,
In embodiment 3, the second fixture block 2 does not include two the first locating slots 24 and two the second elastic components 25, but including second
Locating slot 26, positioning ball 27 and third elastic component 28.Second locating slot 26 is recessed in the second fixture block 2 towards the first fixture block 1 one
The surface (i.e. the second clamping face 23) of side.It positions ball 27 to be set at the notch of the second locating slot 26, third elastic component 28 is set to the
In two locating slots 26, one end and 26 bottom of the second locating slot are tangent, and the other end is connected to positioning ball 27.
Holding holes 3 are formed between two fixture blocks 1,2, specifically, holding holes 3 are by the first clamping face 13 and the second folder
The hexagonal hole that face 23 surrounds is held, is adapted with the shape of gripped object 400 (such as bolt or nut).Define 3 inside of holding holes
Can effectively clamp be internal diameter width at gripped object 400 is gripping width.In the present embodiment, in the first fixture block 1 and second
On central axes (central symmetry axis) direction of fixture block 2, the distance between the first fixture block 1 and the second fixture block 2 are the folder of holding holes 3
Hold width；On the central axes direction of the first fixture block 1 and the second fixture block 2, the aperture size of holding holes 3 is the folder of holding holes 3
Hold width.Due to the distance between the first fixture block 1 and the second fixture block 2 be it is adjustable, the aperture size of holding holes 3 is
Adjustable, the gripping width of holding holes 3 is adjustable.
Since third elastic component 28 is set in the second locating slot 26, positioning ball 27 and 400 plane tangent of gripped object, therefore
Position position of the ball 27 in the second locating slot 26 be it is adjustable, the second fixture block 2 is adjustable in the position of fixture block mounting groove 34
Section.
When clamping device 300 leaves unused, third elastic component 28 is relaxed state, and positioning ball 27 has major part to project to folder
It holds in hole 3.
It is when clamping device 300 in use, external in gripped object 400 (such as bolt or nut) by 3 sets of holding holes, in third
Under the elastic force effect of elastic component 28, positioning ball 27 and (such as bolt or nut) plane tangent of gripped object 400 or by gripped object
400 block, and the first clamping face 13 is bonded and is pressed from both sides with the second clamping face 23 and positioning ball 27 with 400 outer surface of gripped object
Tightly, so that the clamping face 13,23 of spanner and bolt or nut table face good fit, effectively prevent skidding.
Similar to embodiment 1, when the needs of gripped object 400 are loosened or are tightened, by 3 sets of holding holes clamped
Object 400 (such as bolt or nut) is external, the gap between spanner and gripped object 400 can be eliminated, in the first fixture block 1 and second
Under 2 collective effect of fixture block, the first clamping face 13, the second clamping face 23 and positioning 27 surface of ball and 400 appearance face paste of gripped object
Merging is clamped, so that the clamping face 13,23 of spanner and bolt or nut table face good fit, effectively prevent skidding.
When bigger than normal by the size of aid object (such as bolt or nut), 28 stress of third elastic component is compressed, the first fixture block 1
There are certain intervals between 2 both ends of both ends and the second fixture block.After third elastic component 28 is compressed, the second fixture block 2 is pacified towards fixture block
34 bottom surface direction of tankage is mobile, bigger by the size of aid object, rotates between preceding first fixture block, 1 both ends and 2 both ends of the second fixture block
Gap it is bigger, 2 moving distance of the second fixture block is also bigger after rotation；Under limiting condition, the second fixture block 2 even can be close to press from both sides
34 bottom surface of block mounting groove.When the needs of gripped object 400 are loosened or are tightened, firstly, pulling body 100 along hand of spiral up time
Needle or counterclockwise rotation, the first fixture block 1, which is driven, occurs Small-angle Rotation, the first fixture block 1 and the second folder relative to the second fixture block 2
Gap between block 2 is eliminated；Then, pull body 100 along hand of spiral further clockwise or counterclockwise, can make by
Clamping object 400 (such as bolt or nut) is loosened or is tightened.Loosen or rundown process in, gripped object 400 is clamped always, no
It can fall easily, working efficiency can be effectively improved.
When less than normal by the size of aid object (such as bolt or nut), 1 both ends of the first fixture block are affixed with 2 both ends of the second fixture block
It closes, there are larger gaps with 34 bottom of fixture block mounting groove for the second fixture block 2.When the needs of gripped object 400 are loosened or are tightened,
Firstly, pulling body 100 along hand of spiral clockwise or counterclockwise, the first fixture block 1 and the second fixture block 2 are driven relative to set
Small-angle Rotation occurs for hole 200, and the end face at 1 both ends of the first fixture block and the end face at 2 both ends of the second fixture block occur to slide relatively, and second
Fixture block 2 withstands on the bottom surface or side of fixture block mounting groove 34, and the first fixture block 1 locks gripped object 400 with the second fixture block 2 and positioning ball
It is fixed.Smaller by the size of aid object, the gap rotated between preceding second fixture block 2 and 34 bottom of fixture block mounting groove is bigger, after rotation
Second fixture block 2 is also bigger relative to the angle that sets of holes 200 rotate.Then, pull body 100 along hand of spiral further clockwise or
Rotation counterclockwise, the first fixture block 1, the second fixture block 2, sets of holes 200 and gripped object 400 keep relatively fixed, can make gripped object
400 (such as bolts or nut) are loosened or are tightened, loosen or rundown process in, gripped object 400 is clamped always, will not
It falls easily, working efficiency can be effectively improved.
The other technical characteristics of the present embodiment are same as Example 1, and this will not be repeated here.
With in the approximate other embodiments of the present embodiment, clamping device 300 can also include three with upper fixture block, also by
In installation to sets of holes 200；Holding holes 3 are formed between multiple fixture blocks, at least one fixture block in multiple fixture blocks is pacified by movable
It is filled to the inner sidewall of sets of holes 200, the clamping face of one or more fixture blocks can be equipped with telescopic positioning device, including positioning
Slot, positioning ball and elastic component, to fixed gripped object 400.The distance between multiple fixture blocks are adjustable；Holding holes 3 exist
Width at least one direction is adjustable.When pulling body 100 and tentatively rotating along screw thread, multiple fixture blocks are by gripped object
400 lockings；When pulling body 100 and further rotating along screw thread, gripped object 400 is tightened or loosens.
With in the approximate other embodiments of the present embodiment, the cross sections of holding holes 3 can for kidney-shaped, triangle, rectangle,
Hexagon or octagon etc. respectively correspond the gripped object 400 (such as bolt or nut) of different shape, different size.
The beneficial effect of the present embodiment is, provides a kind of spanner, and gripped object is fixed on clamping using positioning device
In hole.In the case where the size of gripped object and clamping part has smaller discrepancy, holding holes can automatically adjust internal diameter.
The present invention can be such that the gripped object loosened after being screwed is fixed on the holder portion, will not fall easily, so as to
Working efficiency is effectively improved, effectively prevent gripped object (bolt or nut etc.) destroyed.
Embodiment 4
As shown in figure 11, the present embodiment provides a kind of spanner, most of technical characteristic including embodiment 1 such as pulls body 100
And sets of holes 200 and clamping device 300, distinguishing characteristics is, embodiment 4 further includes ratchet structure, is mounted on clamping device
Outside 300；Fixture block mounting groove 34 is recessed in the inner sidewall of ratchet ring 51, and 2 movable of the second fixture block is installed to fixture block mounting groove
34；Meanwhile the present embodiment further includes sets of holes groove 35, cross section is crescent, is recessed in 200 inner sidewall of sets of holes.
The ratchet structure includes ratchet ring 51, pawl 52 and the 4th elastic component 53.Ratchet ring 51 is turnably pacified
It is filled in sets of holes 200, and is sheathed on outside clamping device 300；Pawl 52 is engaged with ratchet ring 51；4th elastic component, 53 one end connects
It is connected to and pulls body 100, the other end is connected to pawl 52.
Ratchet ring 51 includes driving portion 511 and the cyclic annular gear teeth 512, and driving portion 511 is set to 51 inside of ratchet ring, and is fixed to
300 outside of clamping device；The cyclic annular gear teeth 512 are set to 51 outside of ratchet ring.Clamping device 300 is fixed to or turnably installs
To ratchet ring 51, and it is fixedly attached to driving portion 511, after clamped portion 400 is placed in holding holes 3, is clamped
Object 400 and driving portion 511 are relatively fixed.First fixture block 1 and the second fixture block 2 are installed by movable to ratchet ring 51, and first
The distance between fixture block 1 and the second fixture block 2 be it is adjustable, the aperture size of holding holes 3 is adjustable.Define holding holes 3
It is gripping width that inside, which can effectively clamp the internal diameter width at the gripped object 400, and the gripping width of holding holes 3 is adjustable
's.In the present embodiment, the structure and working principle of the first fixture block 1 and the second fixture block 2 are all same as Example 1, do not do herein superfluous
It states.
Pawl 52 includes ratchet block 521, ratchet 522 and elastic component mounting groove 523.Ratchet block 521 is set to a sets of holes groove
In 35, one side and 35 side wall of sets of holes groove are tangent.Ratchet 522 be set to ratchet block 521 another side, and with the cyclic annular gear teeth
512 intermesh；Elastic component mounting groove 523 is set to 52 bottom surface of pawl, to install the 4th elastic component 53；4th elastic component 53 1
End is connected to 34 bottom of fixture block mounting groove or inner wall, and the other end is connected to pawl 52.
The present embodiment at work, is pulled body 100 and is rotated clockwise, ratchet ring 51, pawl 52 and pull body 100 occlusion together,
A relatively-stationary entirety is formed, the second fixture block 2 slides in the fixture block mounting groove 34 on ratchet ring 51 and the first fixture block 1
Clamp gripped object 400 (such as bolt or nut) together.When pulling the rotation counterclockwise of body 100, gripped object 400 drives the first folder
Block 1 and the second fixture block 2 turn an angle, and then the second fixture block 2 withstands on the bottom surface and side of fixture block mounting groove 34, so that ratchet
Structure forms a relatively-stationary entirety, is turned round so that pulling body 100.Ratchet structure is respectively independently made with clamping device
Industry is not interfere with each other.
With the approximate other embodiments of the present embodiment, ratchet structure is similarly installed at outside a clamping device 300, should
The structure of clamping device 300 can be identical as the clamping device 300 in embodiment 2 or 3.
The beneficial effect of the present embodiment is, the clamping device of adjustable width is combined with ratchet structure, forms one
The ratchet spanner of the adjustable clamping hole width of kind.In the case where the size of gripped object and clamping part has smaller discrepancy,
Holding holes can automatically adjust internal diameter, to eliminate the gap between spanner and bolt or nut, so that the clamping face of spanner
It with gripped object surface good fit, effectively prevent skidding, enhances user's feel.In addition, the present invention can make pine after being screwed
De- gripped object can be fixed on the holder portion, will not be fallen easily, effectively anti-so as to effectively improve working efficiency
Only gripped object (bolt or nut etc.) is destroyed.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without
It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be within the scope of protection determined by the claims.
Claims (20)
1. a kind of spanner characterized by comprising
Pull body；
Sets of holes, be recessed in it is described pull one side surface of body, or pull body through described；
Clamping device is set in the sets of holes；And
Holding holes are set in the middle part of the clamping device；The aperture size of the holding holes is adjustable.
2. spanner as described in claim 1, which is characterized in that the clamping device includes
More than two fixture blocks are oppositely arranged and surround the holding holes；
Wherein, the inner hole wall of the holding holes includes described two side walls with upper fixture block；
Described two with the distance between upper fixture block is adjustable.
3. spanner as claimed in claim 2, which is characterized in that a fixture block includes
Fixture block body is a part of cylinder；
Clamp port, through the top and bottom of the fixture block body, opening direction is towards another fixture block；And
Clamping face is the inner sidewall of the clamp port.
4. self-locking wrench as claimed in claim 2, which is characterized in that
The clamping device further includes
First groove is recessed in the sets of holes inner sidewall；
Second groove is recessed in a fixture block lateral wall；And it is oppositely arranged with first groove；And
First elastic component is caught in first groove and second groove；
Wherein, first groove, second groove, first elastic component shape be annular a part.
5. spanner as described in claim 1, which is characterized in that further include
Fixture block mounting groove, is recessed in the sets of holes inner sidewall, and an at least fixture block is mounted to the fixture block mounting groove.
6. spanner as claimed in claim 2, which is characterized in that
The clamping device further includes
Bracket is mounted in the sets of holes；An at least fixture block is installed by movable to the bracket.
7. spanner as claimed in claim 6, which is characterized in that
The bracket includes
Column frame body snaps into the sets of holes；
Frame body through-hole, through the top and bottom of the column frame body；And
More than two mounting holes extend through the column frame body side wall, and are connected to the frame body through-hole；
Wherein, by movable or fixedly mounted there are a fixture block, the inner sidewall and two of the frame body through-hole in each mounting hole
A clamping face with upper fixture block surrounds the holding holes.
8. spanner as claimed in claim 7, which is characterized in that
The column frame body lateral wall and the sets of holes inner sidewall are tangent；
The top and bottom end of the column frame body lateral wall are respectively equipped with a flange outstanding；
Two flanges are fastened on the surface for pulling body two sides.
9. spanner as described in claim 1, which is characterized in that further include
Ratchet ring, it is turnable to install to the sets of holes, and it is sheathed on the clamp outer.
10. self-locking wrench as claimed in claim 9, which is characterized in that
The clamping device further includes
First groove is recessed in the ratchet ring inner sidewall；
Second groove is recessed in a fixture block lateral wall；And it is oppositely arranged with first groove；And
First elastic component is caught in first groove and second groove；
Wherein, first groove, second groove, first elastic component shape be annular a part.
11. spanner as claimed in claim 9, which is characterized in that further include
Fixture block mounting groove, is recessed in the ratchet ring inner sidewall, and an at least fixture block is installed to the fixture block mounting groove.
12. the spanner as described in claim 5 or 11, which is characterized in that
An at least fixture block is installed by movable to the fixture block mounting groove；The fixture block includes
First locating slot is recessed in the fixture block towards the surface of the fixture block mounting groove bottom side；And
Second elastic component is set in first locating slot, and one end and the first positioning trench bottom are tangent,
Its other end and fixture block installation trench bottom are tangent.
13. the spanner as described in claim 5 or 11, which is characterized in that
An at least fixture block is mounted in the fixture block mounting groove；The fixture block includes
Second locating slot is recessed in surface of the fixture block towards another fixture block side；
Ball is positioned, at the notch of second locating slot, and
Third elastic component is set in second locating slot, and one end and the second positioning trench bottom are tangent or connect, separately
One end is connected to the positioning ball；
A part of the positioning ball surface and the clamping face of more than two fixture blocks surround the holding holes.
14. spanner as claimed in claim 9, which is characterized in that
The clamping device further includes
Bracket is mounted in the ratchet ring；An at least fixture block is installed by movable to the bracket.
15. spanner as claimed in claim 14, which is characterized in that
The bracket includes
Column frame body snaps on the inside of the ratchet ring；
Frame body through-hole, through the top and bottom of the column frame body；And
More than two mounting holes extend through the column frame body side wall, and are connected to the frame body through-hole；
Wherein, by movable or fixedly mounted there are a fixture block, the inner sidewall and two of the frame body through-hole in each mounting hole
A clamping face with upper fixture block surrounds the holding holes.
16. spanner as claimed in claim 15, which is characterized in that
The column frame body lateral wall and the ratchet ring inner sidewall are tangent；
The top and bottom end of the column frame body lateral wall are respectively equipped with a flange outstanding；
Two flanges are fastened on the surface of the ratchet ring two sides.
17. spanner as claimed in claim 9, which is characterized in that further include
Sets of holes groove is recessed in the inner sidewall of the sets of holes；
Pawl is set in the sets of holes groove, and engages with the ratchet ring；And
4th elastic component is set in the sets of holes groove, and one end is connected to the sets of holes bottom portion of groove or inner wall, the other end
It is connected to the pawl.
18. spanner as claimed in claim 17, which is characterized in that
The ratchet ring includes
Driving portion is set on the inside of the ratchet ring, is fixed on the outside of the clamping device；And
The cyclic annular gear teeth are set on the outside of the ratchet ring；
The pawl includes
Ratchet block, one side and the sets of holes recess sidewall are tangent；
Ratchet is meshed set on the another side of the ratchet block, and with the cyclic annular gear teeth；And
Elastic component mounting groove is set to the pawl bottom surface, to install the 4th elastic component；
Wherein, described 4th elastic component one end is connected to the sets of holes bottom portion of groove or inner wall, and the other end is connected to the spine
Pawl.
19. spanner as described in claim 1, which is characterized in that
The cross section of the holding holes is kidney-shaped, triangle, rectangle, hexagon or octagon.
20. the self-locking wrench as described in claim 6 or 14, which is characterized in that
The material of the bracket is rigid plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711130195.1A CN109773698A (en) | 2017-11-15 | 2017-11-15 | A kind of spanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711130195.1A CN109773698A (en) | 2017-11-15 | 2017-11-15 | A kind of spanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109773698A true CN109773698A (en) | 2019-05-21 |
Family
ID=66493742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711130195.1A Pending CN109773698A (en) | 2017-11-15 | 2017-11-15 | A kind of spanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109773698A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111922962A (en) * | 2020-09-25 | 2020-11-13 | 山东雅士股份有限公司 | Safe and convenient threaded fastener assembling tool |
-
2017
- 2017-11-15 CN CN201711130195.1A patent/CN109773698A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111922962A (en) * | 2020-09-25 | 2020-11-13 | 山东雅士股份有限公司 | Safe and convenient threaded fastener assembling tool |
| CN111922962B (en) * | 2020-09-25 | 2021-01-15 | 山东雅士股份有限公司 | Safe and convenient threaded fastener assembling tool |
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