CN206169948U - Ratchet spanner and ratchet spanner head thereof - Google Patents

Abstract

The utility model relates to a ratchet spanner, the utility model discloses a ratchet spanner and ratchet spanner head thereof, it includes ratchet wheel seat (1) and ratchet (2), ratchet wheel seat (1) middle part is equipped with through -hole (11) that are used for installing ratchet (2), both ends are equipped with preceding annular concave shoulder (111) and back annular concave shoulder (112) respectively around through -hole (11) pore wall, the bottom surface of preceding annular concave shoulder (111) and back annular concave shoulder (112) forms preceding offset trapezoidal surface (131) and back offset trapezoidal surface (132) respectively, the surface of ratchet (2) is equipped with two snap ring groove (22), be equipped with snap ring (4) in snap ring groove (22), two snap ring (4) are located preceding annular concave shoulder (111) and back annular concave shoulder (112) respectively. The utility model discloses a two snap ring (4) and the rank trapezoidal surface who mutually supports with two snap ring (4) can effectively realize spacing to ratchet (2), are convenient for installer simultaneously to the installation of this ratchet spanner head, improve installer's assembly efficiency.

Description

Ratchet spanner and its ratchet wrench head

Technical field

The utility model is related to a kind of ratchet spanner, more particularly to a kind of ratchet wrench head.

Background technology

Ratchet spanner is a kind of manual screw tightening tool, allows user can be good at aiding in bolt or nut Fasten, loosen.And the ratchet spanner of routine carries out screens to ratchet by single snap ring mostly so that user makes in long-time Easily make ratchet spanner be the situation that sliding comes off occur with after, not only increase the processing difficulties of processing staff, also improve Installation difficulty of the installation personnel to ratchet spanner；And also toggle effectively do not protected with tooth block, also it is easy to Extraneous foreign matter is entered between ratchet and tooth block, so as to increase the profile of tooth degree of wear of latch or external tooth, affect ratchet spanner Service life.

Such as published application number " 201620110999.X ", in a kind of patent name " Universal sleeves ratchet spanner " embodiment Exactly describe ratchet is fixed by single snap ring, and the outside of ratchet does not arrange protection pressing plate yet, and also Need to carry out hole milling process to hole position, not only increase the processing request of processing staff, also increase installation personnel to ratchet wrench The difficulty that hand is installed, is also easy to make the ratchet inside spanner sliding dropping situations occur, is also easy to make the spine of ratchet outer surface There is wear problem in tooth or ratchet, affect service life of the user to ratchet spanner.

Published application number " 201620021710.7 ", patent name " bias assembly of ratchet spanner ", in its enforcement also only It is to have described single fastener to be fixed ratchet, and ratchet, thread changing device, the first pawl and the second pawl is arranged in main body In empty head, this kind of mounting means is also required to processing staff and carries out hole milling process, increased peace of the installation personnel to ratchet spanner Dress difficulty, improves the set-up time of installation personnel, and is also not provided with preventing with the outside of the first pawl, the second pawl in ratchet Backplate to external world isolated by dust or foreign matter, improves the rate of wear of the first pawl, the second pawl and ratchet, reduces ratchet wrench The service life of hand.

Utility model content

The utility model is for drawbacks described above present in prior art, there is provided one kind is easy to processing staff to be processed Process, facilitate installation personnel to be combined installation, and ratchet can be avoided sliding or situation about coming off occur, effectively extend and use The ratchet wrench head being easy to produce with assemble of the person to the service life of the device.

In order to solve above-mentioned technical problem, the utility model is addressed by following technical proposals：

Ratchet wrench head, including pawl seat and ratchet, pawl seat middle part is provided with the through hole for installing ratchet, through hole hole wall Rear and front end be respectively equipped with the bottom surface of front annular recessed shoulder and rear annular recessed shoulder, front annular recessed shoulder and rear annular recessed shoulder and formed respectively Front side cascaded surface and rear side cascaded surface, the outer surface of ratchet is provided with two annular grooves, is provided with annular groove for limiting ratchet shaft To the snap ring of motion, two snap rings are located at respectively in front annular recessed shoulder and rear annular recessed shoulder.

Preferably, also including control assembly, control assembly includes tooth block, and tooth block upper surface is provided with nibbles with ratchet outer surface The latch of conjunction, pawl seat is provided with the storage tank for housing tooth block, and allowing latch to engage with the external tooth of ratchet surface can pass through Tooth block is controlled to ratchet, so as to convenient use person is used ratchet.

Preferably, storage tank is the deep-slotted chip breaker that through hole hole wall extends from front end face backwards face, hole wall rear end face As the trailing flank of storage tank.

Preferably, the snap ring in rear annular recessed shoulder is resisted against on rear side cascaded surface, the snap ring in front annular recessed shoulder with it is front Pressing plate is provided between offset tread, snap ring makes pressing plate be resisted against on the cascaded surface of front side and forms the front side relative with storage tank trailing flank Face.

Preferably, control assembly also includes toggle and spring block, tooth block lower surface is provided with the arc regulating tank of indent, bullet Spring block one end is resisted against on the cell wall of arc regulating tank, and the other end is connected on toggle.The cooperation of arc regulating tank and spring block Using activity control can be carried out to tooth block, consequently facilitating user is controlled by tooth block to the engagement direction of ratchet.

Preferably, spring block includes pushing block and the spring that is located in pushing block, pushing block one end is arranged in toggle and can be Stretch in toggle, the other end is resisted against all the time under the action of the spring on the cell wall of arc regulating tank.

Preferably, storage tank bottom is provided with the toggle groove for installing toggle, toggle can be rotated in toggle groove, in toggle groove Blind hole is provided with, toggle is provided with the locating pin coordinated with blind hole, the positioning to toggle is realized by the cooperation of locating pin and blind hole, When ensureing assembling and the when of use, toggle do not depart from its operating position.

Preferably, toggle includes driving lever and rotation post, spring block is arranged on rotation post, and toggle groove bottom is provided with and toggle groove The stopper slot of connection, rotation post insertion toggle groove is interior and locating pin is arranged on rotation column top, and driving lever is located in stopper slot, by spacing The setting of groove prevents driving lever rotation amplitude excessive and caused spring block that tooth block is pushed to into the position that deviation is engaged with ratchet, protects Stable engagement between card tooth block and ratchet.

Preferably, the bottom of pawl seat is provided with joint, connecting hole is provided with joint, is easy to user to pass through to connect Head is attached with connecting hole to the ratchet wrench head, and user the ratchet wrench head can be carried out by using situation Activity.

Preferably, the depth of front annular recessed shoulder firmly gets at more than the depth of rear annular recessed shoulder so as to ensure that storage tank has Space, also can guarantee that pressing plate can have enough thickness, it is ensured that the transmission stability of control assembly.

Ratchet spanner, including plate body, are connected with above-mentioned ratchet wrench head on plate body.

The utility model as a result of above technical scheme, with significant technique effect：

The utility model changes conventional spine by two snap rings and the cascaded surface cooperated with two snap rings The set-up mode and version of wheel spanner, it is ensureing effectively to realize to the spacing of ratchet, prevents ratchet from play occur, it is to avoid On the premise of there is sliding or comes off in ratchet, additionally it is possible to so that ratchet carries out when mounted both sides engaging, effectively improve installation people The efficiency of assembling of member；And without the need for hole milling when making processing staff's processing pawl seat, it is i.e. plastic only to carry out a punching press, effectively carries High processing convenience, while the gap between ratchet surface external tooth and ratchet base inner surface can be effectively reduced, improves spanner Torsion.

Description of the drawings

Fig. 1 is the overall structure diagram of the utility model embodiment 1.

Fig. 2 is the structure chart one of pawl seat in Fig. 1.

Fig. 3 is the structure chart two of pawl seat in Fig. 1.

Fig. 4 is the longitudinal sectional view of Fig. 2 or Fig. 3.

Fig. 5 is ratchet assembly and control assembly assembling figure in Fig. 1.

Fig. 6 is the structure chart of control assembly in Fig. 1.

Fig. 7 is the structure chart of ratchet assembly in Fig. 1.

Fig. 8 is the structure chart of toggle in Fig. 1.

Fig. 9 is the structure chart of spring block in Fig. 1.

Figure 10 is the structure chart of tooth block in Fig. 1.

Figure 11 is the structure chart of ratchet in Fig. 1.

Figure 12 is the structure chart of snap ring in Fig. 1.

Figure 13 is the structure chart of Fig. 1 center platens.

Figure 14 is the structural representation of the utility model embodiment 2.

The toponym that each number designation is referred in accompanying drawing is as follows：1-pawl seat, 2-ratchet, 3-toggle, 4-card Ring, 5-pressing plate, 6-tooth block, 7-spring block, 10-plate body, 11-through hole, 12-storage tank, 13-toggle groove, 14-connect Head, 15-connecting hole, 16-stopper slot, 21-external tooth, 22-annular groove, 31-driving lever, 32-rotation post, 33-slotted eye, 34- Locating pin, 61-latch, 62-arc regulating tank, 71-shrinkage pool, 131-front side cascaded surface, 132-rear side cascaded surface, 111- Front annular recessed shoulder, 112-rear annular recessed shoulder.

Specific embodiment

Below in conjunction with the accompanying drawings the utility model is described in further detail with embodiment.

Embodiment 1

Ratchet wrench head, as shown in figures 1-13, including pawl seat 1 and ratchet 2, the middle part of pawl seat 1 is provided with for installing spine The through hole 11 of wheel 2, the rear and front end of the hole wall of through hole 11 is respectively equipped with front annular recessed shoulder 111 and rear annular recessed shoulder 112, and front annular is recessed The depth of shoulder 111 is more than the bottom surface of the depth of rear annular recessed shoulder 112, front annular recessed shoulder 111 and rear annular recessed shoulder 112 and is formed respectively Front side cascaded surface 131 and rear side cascaded surface 132, the outer surface of ratchet 2 be provided with two annular grooves 22, annular groove 22 be provided with for The snap ring 4 of the axially-movable of ratchet 2 is limited, two snap rings 4 are located at respectively in front annular recessed shoulder 111 and rear annular recessed shoulder 112.Arrange Two snap rings 4 and the cascaded surface cooperated with two snap rings 4, can effectively realize the axial limiting to ratchet 2, while so that Ratchet 2 carries out when mounted both sides engaging, is easily installed installation of the personnel to the ratchet wrench head, improves the assembling of installation personnel Efficiency.

The ratchet wrench head also include control assembly, control assembly include tooth block 6, the upper surface of tooth block 6 be provided with outside ratchet 2 The latch 61 of surface engagement, pawl seat 1 is provided with the storage tank 12 for housing tooth block 6.Storage tank 12 be the hole wall of through hole 11 from The deep-slotted chip breaker that front end face backwards face extends, hole wall rear end face makes storage tank become not as the trailing flank of storage tank 12 The Open architecture of leading flank is set so that the pawl seat in production can using one time punching molded, allow the producer without Hole milling process need to be carried out to storage tank, effectively improve the production efficiency of the producer.

Control assembly also includes toggle 3 and spring block 7, and the lower surface of tooth block 6 is provided with the arc regulating tank 62 of indent, spring block 7 one end are resisted against on the cell wall of arc regulating tank 62, and the other end is connected on toggle 3, are forced in arc by spring block 7 and are adjusted Groove 62, so as to realize the activity control to tooth block 6, is easy to user to be controlled to the engagement direction of ratchet 2 by tooth block 6. Spring block 7 includes pushing block and the spring being located in pushing block, and pushing block is provided with the shrinkage pool 71 for spring placement, and pushing block one end is arranged on Toggle 3 is interior and can stretch in toggle 3, and the other end is resisted against all the time under the action of the spring on the cell wall of arc regulating tank 62. The bottom of storage tank 12 is provided with the toggle groove 13 for installing toggle 3, and toggle 3 can be rotated in toggle groove 13, be provided with blind in toggle groove 13 Hole 121, toggle 3 is provided with the locating pin 34 coordinated with blind hole 121, realizes positioning to toggle 3, it is ensured that during assembling and use When, toggle 3 do not depart from its operating position, it is ensured that its work is smoothed out.Toggle 3 includes driving lever 31 with rotation post 32, spring Block 7 is arranged on rotation post 32, and rotation post 32 is provided with the slotted eye 33 for disposing spring fast, and the bottom of toggle groove 13 is provided with and toggle groove The stopper slot 16 of 13 connections, the rotation insertion toggle groove 13 of post 32 is interior and locating pin 34 is arranged on the top of rotation post 32, and driving lever 31 is located at limit In the groove 16 of position, engaged with ratchet 2 with preventing the rotation amplitude of driving lever 31 excessive and caused spring block 7 that tooth block 6 is pushed to into deviation Position, it is ensured that the stable engagement between tooth block 6 and ratchet 2.

Afterwards the snap ring 4 in annular recessed shoulder 112 is resisted against on rear side cascaded surface 132, snap ring 4 in front annular recessed shoulder 111 with Be provided with pressing plate 5 between the cascaded surface 131 of front side, snap ring 4 make pressing plate 5 be resisted against on the cascaded surface 131 of front side formed with after storage tank 12 The relative leading flank in side.Because the component of ratchet 2 is located in the through hole 11 in the central authorities of pawl seat 1, and control assembly is located at storage tank In 12, thus pressing plate 5 is set in the front of storage tank 12 so that pressing plate 5 can be good at the external tooth of the outer surface of ratchet 2 and tooth block Latch 61 on 6 carries out proofing dust and protecting, it is to avoid tooth block 6 is directly exposed in external environment with the engagement place of ratchet 2, by pressure Plate 5 to external world isolated by dust or other foreign matters, prevents dust or other foreign matters from entering storage tank 12 to ratchet 2 and tooth block 6 Between engagement produce impact, while also reduce the abrasion of ratchet 2 or tooth block 6, when increased the use of ratchet 2 and tooth block 6 Between, extend the service life of the ratchet wrench head.

The bottom of pawl seat 1 is provided with joint 14, and connecting hole 15 is provided with joint 14, is easy to user to pass through joint 14 are attached with 15 pairs of ratchet wrench heads of connecting hole, and user the ratchet wrench head can be entered by using situation Row activity.

When needing to install the ratchet wrench head, pressing plate 5 is placed into first installation personnel the front end of ratchet 2 Portion, and snapped onto in annular groove 22 by snap ring 4 so that pressing plate 5 can be fixed on snap ring 4 outside of ratchet 2；Then by bullet In the shrinkage pool 71 that spring is put into inside pushing block, and pushing block and spring are put in the slotted eye 33 in rotation post 32 central authorities；Again will control Tooth block 6, spring block 7 and toggle 3 in component is put in the storage tank 12 on the surface of pawl seat 1, just completes control assembly Install；Then the ratchet 2 for being provided with pressing plate 5 and a snap ring 4 is placed in through hole 11, and by front side cascaded surface 131 with Snap ring 4 carries out spacing to ratchet 2, then is clicked into place in the annular groove 22 in the outside of rear side cascaded surface 132 by another snap ring 4 It is interior, and cascaded surface 132 is fixed with the snap ring 4 to the component of ratchet 2 on rear side of leading to, and completes the overall fixation of the ratchet wrench head With installation；And allow two snap rings 4 respectively on front annular recessed shoulder 111 with the cascaded surface 13 of rear annular recessed shoulder 112, by front side Cascaded surface 131 can be good at carrying out screens to snap ring 4 with the setting of rear side cascaded surface 132, play occurs so as to avoid ratchet 2 Situation, it is to avoid there is sliding or situation about coming off in ratchet 2, and increased using effect of the user to the ratchet wrench head, Improve the use time of the ratchet wrench head.Meanwhile, the setting of two snap rings 4 allows user to first pass through a snap ring 4 Ratchet 2 and control assembly are carried out spacing, then ratchet 2 and control assembly are fixed by another snap ring 4, facilitate installation Fast Installation of the personnel to the ratchet wrench head, improves the installation effectiveness of installation personnel.

And the setting of joint 14 and connecting hole 15 is then easy to user that fixation is attached to the ratchet wrench head, and allows and make User can be adjusted by using situation to the angle of the ratchet wrench head, so as to improve user to the ratchet wrench head Using effect, on tooth block 6 tooth of latch 61 towards different, and when spring block 7 or so and the arc regulating tank 62 of the bottom of tooth block 6 When, tooth block 6 can be caused to incline to the left or to the right, when spring block 7 acts on arc 62 left side of regulating tank, tooth block 6 is tilted to the right, Now ratchet 2 can be rotated counterclockwise, locked clockwise；When spring block 7 acts on arc 62 right side of regulating tank, tooth block 6 are tilted to the left, and now ratchet 2 can be rotated clockwise, counterclockwise locked, realize to ratchet so as to pass through the control assembly The engagement of external tooth 21 direction in 2 outsides is controlled, and makes ratchet 2 have the function of control bidirectional rotation, improves user to the spine Take turns the using effect of 2 spanners.

On the one hand the set-up mode of the middle through-hole 11 of pawl seat 1 and storage tank 12 changes conventional spine in the present embodiment The version and processing method of wheel spanner, allows processing staff without the need for carrying out hole milling operation to pawl seat 1, only need to be by pawl seat 1 Carry out that a punching press is i.e. plastic, improve the processing convenience of processing staff, on the other hand, using this kind of assembling form, Fast Installation of the installation personnel to the ratchet wrench head is facilitated, the installation effectiveness of installation personnel is improve；Simultaneously because in spine The rear and front end of wheel seat 1 is respectively provided with cascaded surface, so that the assembling structure between ratchet 2 and pawl seat 1 is compacter, effectively Reduce the gap between the surface external tooth of ratchet 2 and the inner surface of pawl seat 1, so that the external tooth 21 of the outer surface of ratchet 2 and tooth block Latch 61 between engagement it is more complete, the torsion of spanner is increased substantially then, and traditional pawl seat, due to it In the form of plane, the gap between its external tooth of ratchet 2 and the inner surface of pawl seat 1 is larger, and torsion is less for inner surface, experiment card Bright, compared to traditional pawl seat 1 for not adopting cascaded surface, its torsion improves more than 40%.

Embodiment 2

Ratchet spanner, as shown in figure 14, including plate body 10, connected by the connecting hole 15 of setting on joint 14 on plate body 10 There is the ratchet wrench head in embodiment 1.

In a word, preferred embodiment of the present utility model is the foregoing is only, it is all according to the utility model claim institute The impartial change of work and modification, should all belong to the covering scope of the utility model patent.

Claims (10)

1. ratchet wrench head, including pawl seat (1) and ratchet (2), it is characterised in that：Pawl seat (1) middle part is provided with for installing The through hole (11) of ratchet (2), the rear and front end of through hole (11) hole wall is respectively equipped with front annular recessed shoulder (111) and rear annular recessed shoulder (112), the bottom surface of front annular recessed shoulder (111) and rear annular recessed shoulder (112) forms respectively front side cascaded surface (131) and rear side ladder Face (132), the outer surface of ratchet (2) is provided with two annular grooves (22), annular groove (22) and is provided with for limiting ratchet (2) axially The snap ring (4) of motion, two snap rings (4) are located at respectively in front annular recessed shoulder (111) and rear annular recessed shoulder (112).

2. ratchet wrench head according to claim 1, it is characterised in that：Also include control assembly, control assembly includes tooth Block (6), tooth block (6) upper surface is provided with the latch (61) engaged with ratchet (2) outer surface, and pawl seat (1) is provided with for housing The storage tank (12) of tooth block (6).

3. ratchet wrench head according to claim 2, it is characterised in that：Storage tank (12) is through hole (11) hole wall from front end Towards the deep-slotted chip breaker that rear end face extends, trailing flank of through hole (11) the hole wall rear end face as storage tank (12).

4. ratchet wrench head according to claim 3, it is characterised in that：Afterwards the snap ring (4) in annular recessed shoulder (112) against On rear side cascaded surface (132), between the snap ring (4) and front side cascaded surface (131) in front annular recessed shoulder (111) pressing plate is provided with (5), snap ring (4) makes pressing plate (5) be resisted against on front side cascaded surface (131) and forms the front side relative with storage tank (12) trailing flank Face.

5. the ratchet wrench head according to Claims 2 or 3 or 4, it is characterised in that：Control assembly also include toggle (3) and Spring block (7), tooth block (6) lower surface is provided with the arc regulating tank (62) of indent, and spring block (7) one end is resisted against arc regulating tank (62) on cell wall, the other end is connected on toggle (3).

6. ratchet wrench head according to claim 5, it is characterised in that：Spring block (7) is including pushing block and is located in pushing block Spring, pushing block one end is arranged in toggle (3) and can stretch in toggle (3), and the other end is supported all the time under the action of the spring Lean against on the cell wall of arc regulating tank (62).

7. ratchet wrench head according to claim 5, it is characterised in that：Storage tank (12) bottom is provided with installation toggle (3) Toggle groove (13), toggle (3) can be rotated in the toggle groove (13), blind hole (121) is provided with toggle groove (13), on toggle (3) It is provided with the locating pin (34) coordinated with blind hole (121).

8. ratchet wrench head according to claim 7, it is characterised in that：Toggle (3) includes driving lever (31) and rotation post (32), Spring block (7) is arranged in rotation post (32), and toggle groove (13) bottom is provided with the stopper slot (16) connected with toggle groove (13), revolves post (32) insert in toggle groove (13) and locating pin (34) is arranged on rotation post (32) top, driving lever (31) is in stopper slot (16).

9. ratchet wrench head according to claim 1, it is characterised in that：The bottom of pawl seat (1) is provided with joint (14), it is provided with connecting hole (15) on joint (14).

10. ratchet spanner, including plate body, it is characterised in that the ratchet being connected with plate body described in claim 1-9 any one Driving end.