CN206169947U - Ratchet spanner and rapid Assembly formula ratchet spanner head thereof - Google Patents

Abstract

The utility model relates to a ratchet spanner, the utility model discloses a ratchet spanner and rapid Assembly formula ratchet spanner head thereof, it includes ratchet wheel seat (1), 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 utility model discloses a both ends set up two rank trapezoidal surface around the ratchet, have changed conventional ratchet spanner's the mode that sets up and structural style in the past, and it enables to need not the hole milling when processing personnel process ratchet wheel seat, and only need carry out a punching press is formability, has effectively improved the processing convenience, can effectively reduce the clearance between ratchet surface external tooth and the ratchet wheel seat internal surface simultaneously, improve the torsion of spanner.

Description

Ratchet spanner and its quick assembled type ratchet wrench head

Technical field

This 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 for play occur or coming off with after, also increase the processing difficulties of processing staff；And also do not have Being had ratchet and tooth block are carried out effective dust-proof setting, is also easy to make extraneous foreign body enter between ratchet and tooth block, so as to Increase the profile of tooth wear problem of ratchet or tooth block, affect the service life of ratchet spanner

And published application number " 201120347607.9 ", patent name " be easy to assemble one-way ratchet wrench structure-improved " With reference to the accompanying drawings 1 and specifically apply in example write exactly " arc fluting 121 that the side wall of accommodating hole 12 offers indent " understand Producer pair Punching is not only needed when ratchet wrench main body is processed, in addition it is also necessary to carry out hole milling operation, the production for improving ratchet spanner is difficult Property, and also illustrate that in this application by it is single button spring carry out screens, also do not carry out dust-proof setting, easily there is ratchet play Or situation about coming off, also easily allow ratchet face abrasion occur with ratchet, the using effect of user is affected, reduce ratchet spanner Service life.

Published application number " 201320021584.1 ", patent name " one-way ratchet wrench control structure ", with reference to the accompanying drawings 1 and Specifically applying in example and write exactly " inboard rearward ends of holding part 12 be then provided with a connection put tug groove portion 13 " understands Producer to spanner It is also required to be punched out and hole milling process when being processed, improves the production difficulty of ratchet spanner, and this application is also logical Cross single jump ring to be fixed, also do not carry out dust-proof setting, not only easily allow ratchet play or situation about coming off occur, also increase Add ratchet face wear problem occur with ratchet, affected the using effect of user, reduce the service life of ratchet spanner.

Utility model content

This utility model is for being directed to drawbacks described above present in prior art in prior art, there is provided one kind is easy to add Workman person is processed, and facilitates installation personnel to be combined installation, and ratchet can be avoided sliding or the feelings for coming off occur Condition, effectively extends the quick assembled type ratchet wrench head being easy to produce with assemble of the user to the service life of the device.

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

Quick assembled type ratchet wrench head, including pawl seat, pawl seat middle part is provided with the through hole for installing ratchet, through hole The rear and front end of hole wall is respectively equipped with the bottom surface difference of front annular recessed shoulder and rear annular recessed shoulder, front annular recessed shoulder and rear annular recessed shoulder Form front side cascaded surface and rear side cascaded surface.

Preferably, being provided with ratchet in through hole, the outer surface of ratchet is provided with two for limiting ratchet axially-movable Spacing ring, two spacing rings are located at respectively in front annular recessed shoulder and rear annular recessed shoulder.

Preferably, spacing ring is for snap ring or with female threaded collar, the outer surface of ratchet is provided with for supplying snap ring The annular groove that snaps in is provided with the external screw thread coordinated with threaded collar.It is divided into four kinds of forms, specially in rear annular recessed shoulder Spacing ring be snap ring, the spacing ring in front annular recessed shoulder is with female threaded collar；Or positioned at rear annular recessed shoulder Interior spacing ring is that, with female threaded collar, the spacing ring in front annular recessed shoulder is snap ring；Or it is recessed positioned at front annular Spacing ring in shoulder and in rear annular recessed shoulder is with female threaded collar, and in front annular recessed shoulder and rear annular Spacing ring in recessed shoulder is snap ring.

Can realize in the form of snap ring clamping or in the form of threaded connection to ratchet axial limiting, connection limit At ratchet two ends in the form of snap ring, or in the form of threaded collar, also can adopt in ratchet one end and block during the ring of position Ring, the other end adopts threaded collar, the mode that two kinds of forms are used, and it can make the Assembly And Disassembly of ratchet simpler, convenient.

Preferably, the spacing ring in rear annular recessed shoulder is and the integrally formed annular protrusion of ratchet, positioned at front ring For snap ring or with female threaded collar, the outer surface of ratchet is provided with the card for snapping in for snap ring to spacing ring in the recessed shoulder of shape Annular groove is provided with the external screw thread coordinated with threaded collar.Spacing ring is designed to and the integrally formed annular protrusion of ratchet, it can be made While ensureing to carry out axial limiting to ratchet, moreover it is possible to play a part of to ratchet strength reinforcing.

Preferably, through hole bottom is provided with storage tank, storage tank is that from front end face backwards face, extension is formed through hole hole wall Arcuate groove, storage tank includes the trailing flank being made up of through hole hole wall rear end face, and it is not provided with leading flank, so that it adds man-hour , without the need for carrying out hole milling process to storage tank, the production efficiency of Producer can be effectively improved using one time punching molded.

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 makes pressing plate formation relative with storage tank trailing flank Leading flank.

Ratchet spanner, including body is pulled, pulls and be connected with body ratchet wrench head.

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

This utility model changes conventional ratchet spanner by arranging cascaded surface on the front/rear end of pawl seat Set-up mode and version, it is ensureing effectively to realize to the spacing of ratchet, prevents ratchet from play occur, it is to avoid ratchet occurs Sliding or on the premise of coming off, moreover it is possible to without the need for hole milling when making processing staff's processing pawl seat, only need to carry out by a punching press into Type, effectively increases processing convenience, while the gap between ratchet surface external tooth and ratchet base inner surface can be effectively reduced, Improve the torsion of spanner.

Description of the drawings

Fig. 1 is the overall structure diagram of the embodiment of the present invention 1.

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

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

Fig. 4 is the structure chart of ratchet assembly in Fig. 1.

Fig. 5 is the structure chart of tooth block in Fig. 1.

Fig. 6 is the structure chart of ratchet in Fig. 1.

Fig. 7 is the structure chart of Fig. 1 center platens.

Fig. 8 is the structure chart of spacing ring in Fig. 1.

Fig. 9 is the structural representation of the embodiment of the present invention 2.

Figure 10 is structural representation when ratchet is not installed in Fig. 9.

The toponym that each number designation is referred in accompanying drawing is as follows：1-pawl seat, 2-ratchet, 3-spring groove, 4- Spacing ring, 5-pressing plate, 6-tooth block, 10-pull body, 11-through hole, 12-storage tank, 21-external tooth, 22-annular groove, 31- Spring, 61-latch, 62-spring eye, 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 this utility model is described in further detail with embodiment.

Embodiment 1

Quick assembled type ratchet wrench head, as Figure 1-Figure 8, including pawl seat 1 and ratchet 2, the middle part of pawl seat 1 is provided with For installing the through hole 11 of ratchet 2, the bottom of through hole 11 is provided with storage tank 12, storage tank 12 and is provided with upper surface and the appearance of ratchet 2 The tooth block 6 of face engagement, 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, front annular The bottom surface of recessed shoulder 111 and rear annular recessed shoulder 112 forms respectively front side cascaded surface 131 and rear side cascaded surface 132, the appearance of ratchet 2 Face is provided with two annular grooves 22, annular groove 22 spacing ring 4 being provided with for limiting the axially-movable of ratchet 2, two 4 points of spacing rings Wei Yu not be in front annular recessed shoulder 111 and rear annular recessed shoulder 112.Two spacing rings 4 are set and are cooperated with two spacing rings 4 Cascaded surface, the axial limiting to ratchet 2 can be effectively realized, while so that ratchet 2 carries out when mounted both sides engaging, being easy to peace Installation of the dress personnel to the ratchet wrench head, improves the efficiency of assembling of installation personnel.

Spacing ring 4 is snap ring, and the outer surface of ratchet 2 is provided with two annular grooves 22 for snapping in for snap ring.Using snap ring The form realization of clamping can make its Assembly And Disassembly simpler, convenient ratchet axial limiting.

Storage tank 12 is the arcuate groove that the hole wall of through hole 11 extends from front end face backwards face, storage tank 12 is become not The Open architecture of leading flank is set so that the pawl seat in production can using one time punching molded, allow Producer without Hole milling process need to be carried out to storage tank 12, effectively improve the production efficiency of Producer, storage tank 12 is included by after the hole wall of through hole 11 The trailing flank that end face is constituted.

Afterwards the snap ring in annular recessed shoulder 112 be resisted against rear side cascaded surface 132 on, the snap ring in front annular recessed shoulder 111 with it is front Pressing plate 5 is provided between offset tread 131, snap ring makes pressing plate 5 be resisted against on the cascaded surface 131 of front side makes pressing plate be formed and storage tank 12 The relative leading flank of trailing flank.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 and houses In groove 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 and tooth of the outer surface of ratchet 2 Latch 61 on block 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, is passed through Pressing plate 5 to external world isolated by dust or other foreign bodies, prevents dust or other foreign bodies from entering storage tank 12 to ratchet 2 and tooth block Engagement between 6 produces 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 present embodiment show in particular a kind of one-way ratchet wrench, is additionally provided with one end in its storage tank 12 and is connected to storage tank On 12 inwalls, the other end is connected to the spring 31 on the end face of tooth block 6, and the specially inwall of storage tank 12 is provided with accommodating for spring 31 Spring groove 3, tooth block 6 is arranged on the side relative with spring groove 3, and the one end of spring 31 is connected in spring groove 3, other end connection On tooth block 6 on the end face relative with spring groove 3, tooth block 6 is provided with the spring eye 62 stretched into for spring 31, the two ends of spring 31 It is respectively provided with spring groove 3 and spring eye 62, realizes to the spacing of spring 31, while ensure that spring 31 can promote tooth block 6, Tooth block 6 is set to engage with the external tooth of the outer surface of ratchet 2 completely.

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 spacing ring 4 so that pressing plate 5 can be fixed on spacing ring 4 outside of ratchet 2；Then Spring 31 is put in spring groove 3, and tooth block 6 is placed in storage tank 12, and the other end of spring 31 is loaded into tooth block On spring eye 62 in；Then the ratchet 2 for being provided with pressing plate 5 and a spacing ring 4 is placed in through hole 11, and by front side Cascaded surface 131 carries out spacing with spacing ring 4 to ratchet 2, then is clicked into place in rear side cascaded surface 132 by another spacing ring 4 In the annular groove 22 in outside, and logical rear side cascaded surface 132 is fixed with the spacing ring 4 to the component of ratchet 2, and by tooth block 6 and Ratchet 2 is engaged, and completes the overall fixation of the ratchet wrench head and installs.

Two spacing rings 4 are allowed to be located at the cascaded surface 13 of front annular recessed shoulder 111 and rear annular recessed shoulder 112 respectively in the present embodiment On, can be good at carrying out screens to spacing ring 4 by the setting of front side cascaded surface 131 and rear side cascaded surface 132, so as to avoid There is the situation of play in ratchet 2, it is to avoid sliding or situation about coming off occurs in ratchet 2, and increased user to the ratchet wrench head Using effect, also improve the use time of the ratchet wrench head.Meanwhile, the setting of two spacing rings 4 allows the user can First pass through a spacing ring 4 carries out spacing to ratchet 2 and tooth block, then ratchet 2 and tooth block is carried out by another spacing ring 4 solid It is fixed, Fast Installation of the installation personnel to the ratchet wrench head is facilitated, improve the installation effectiveness of installation personnel.

The set-up mode and version of the middle through-hole 11 of pawl seat 1 and storage tank 12 is changed in the past in the present embodiment The processing method of conventional ratchet spanner, allows processing staff without the need for carrying out hole milling operation to pawl seat 1, need to only carry out pawl seat 1 Punching press is plastic, improves the processing convenience of processing staff, while being also convenient for installation personnel to the ratchet spanner The Fast Installation of head, improves the installation effectiveness of installation personnel.Effectively reduce the surface external tooth of ratchet 2 and the inner surface of pawl seat 1 it Between gap so that engaging between the external tooth 21 of the outer surface of ratchet 2 and the latch 61 of tooth block is more complete, cause then The torsion of spanner is increased substantially, and traditional pawl seat, because its inner surface is in the form of plane, its external tooth of ratchet 2 with Gap between the inner surface of pawl seat 1 is larger, and torsion is less, it is demonstrated experimentally that compared to traditional ratchet for not adopting cascaded surface Seat 1, its torsion improves more than 40%.

Embodiment 2

Ratchet spanner, as shown in Figure 9, Figure 10, including body 10 is pulled, pulls the ratchet spanner being connected with body 10 in embodiment 1 Head.

Embodiment 3

With embodiment 1, the different spacing rings 4 in rear annular recessed shoulder 112 is snap ring, the appearance of the front end of ratchet 2 Face is provided with the annular groove 22 for snapping in for snap ring；Spacing ring 4 in front annular recessed shoulder 111 is with female screw thread Ring, the outer surface of the rear end of ratchet 2 is provided with the external screw thread coordinated with threaded collar.

Embodiment 4

With embodiment 1, except that the spacing ring 4 in rear annular recessed shoulder 112 is with female threaded collar, The outer surface of ratchet rear end is provided with the external screw thread coordinated with threaded collar；Spacing ring 4 in front annular recessed shoulder 111 is card Ring, the outer surface of the front end of ratchet 2 is provided with the annular groove 22 for snapping in for snap ring.

Embodiment 5

With embodiment 1, except that the spacing ring 4 in front annular recessed shoulder 111 and rear annular recessed shoulder 112 is band Female threaded collar, is equipped with the external screw thread coordinated with threaded collar on the outer surface of the rear and front end of ratchet 2.

Embodiment 6

With embodiment 1, except that the spacing ring in rear annular recessed shoulder 112 is and the integrally formed annular of ratchet Projection, the spacing ring 4 in front annular recessed shoulder 111 is snap ring, and the outer surface of the front end of ratchet 2 is provided with for snapping in for snap ring Annular groove 22.

Embodiment 7

With embodiment 1, except that the spacing ring 4 in rear annular recessed shoulder 112 is and the integrally formed ring of ratchet Shape is raised, and the female threaded collar of band in front annular recessed shoulder 111, the outer surface of the front end of ratchet 2 is provided with and screw thread The external screw thread that ring coordinates.

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

Claims (9)

1. quick assembled type ratchet wrench head, including pawl seat (1), it is characterised in that：Pawl seat (1) middle part is provided with through hole (11), 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), and front annular is recessed The bottom surface of shoulder (111) and rear annular recessed shoulder (112) forms respectively front side cascaded surface (131) and rear side cascaded surface (132).

2. quick assembled type ratchet wrench head according to claim 1, it is characterised in that：Ratchet is installed in through hole (11) (2), the outer surface of ratchet (2) is provided with two spacing rings (4) for limiting ratchet (2) axially-movable, two spacing rings (4) point Wei Yu not be in front annular recessed shoulder (111) and rear annular recessed shoulder (112).

3. quick assembled type ratchet wrench head according to claim 2, it is characterised in that：Through hole (11) bottom is provided with accommodating Groove (12), the arcuate groove that storage tank (12) extends for through hole (11) hole wall from front end face backwards face, storage tank (12) bag Include the trailing flank being made up of through hole (11) hole wall rear end face.

4. quick assembled type ratchet wrench head according to claim 3, it is characterised in that：Afterwards in annular recessed shoulder (112) Spacing ring (4) is resisted against on rear side cascaded surface (132), the spacing ring (4) and front side cascaded surface in front annular recessed shoulder (111) (131) pressing plate (5) is provided between, spacing ring (4) makes pressing plate (5) be resisted against on front side cascaded surface (131) makes pressing plate be formed and be held Put the relative leading flank of groove (12) trailing flank.

5. quick assembled type ratchet wrench head according to claim 2, it is characterised in that：Positioned at rear annular recessed shoulder (112) Interior spacing ring is snap ring, and the spacing ring in front annular recessed shoulder (111) is with female threaded collar, before ratchet (2) The annular groove (22) that snaps in for snap ring is respectively provided with the outer surface of rear end and the external screw thread coordinated with threaded collar is provided with.

6. quick assembled type ratchet wrench head according to claim 2, it is characterised in that：Positioned at rear annular recessed shoulder (112) Interior spacing ring is that, with female threaded collar, the spacing ring in front annular recessed shoulder (111) is snap ring, before ratchet (2) The external screw thread and the annular groove (22) for snapping in for snap ring coordinated with threaded collar is respectively equipped with the outer surface of rear end.

7. quick assembled type ratchet wrench head according to claim 2, it is characterised in that：Spacing ring (4) is with interior spiral shell The threaded collar of stricture of vagina, the outer surface of ratchet (2) front and back end is provided with the external screw thread coordinated with threaded collar.

8. quick assembled type ratchet wrench head according to claim 2, it is characterised in that：Positioned at rear annular recessed shoulder (112) Interior spacing ring is and the integrally formed annular protrusion of ratchet that the spacing ring in front annular recessed shoulder (111) is snap ring or band Female threaded collar, the outer surface of ratchet (2) is provided with the annular groove (22) for snapping in for snap ring or is provided with and threaded collar The external screw thread of cooperation.

9. ratchet spanner, including pulling body (10), it is characterised in that：Pull and claim 1-6 any one institute is connected with body (10) The quick assembled type ratchet wrench head stated.