CN101885168A - Ratchet wrench - Google Patents

Abstract

The invention discloses a ratchet wrench, which comprises a head, a handle, and a gear component and a brake component positioned in the head. The gear component comprises a gear element, a connecting head positioned on the upper part of the gear element, and a bottom positioned on the lower part of the gear element; the gear element is positioned in a through hole of the head; the connecting head and the bottom respectively extend out of the head and positioned outside the head; and the brake component is positioned in a groove near the through hole of the head and close to the handle. Through the arrangement of the gear component and the brake component of the ratchet wrench, a control block can control left and right control pieces to realize unidirectional locking and bidirectional rotary locking of the ratchet wrench and further realize the clockwise and anticlockwise idling of the wrench so as to facilitate loosening or tightening nuts or bolts.

Description

A kind of ratchet spanner

Technical field

The present invention relates to a kind of spanner, particularly relate to a kind of ratchet spanner.

Background technology

Spanner is an instrument commonly used in the activity in production, and it has various functions, comprises monkey wrench, box spanner etc.But in some space-constrained occasions, use these spanners sometimes to feel inconvenient, need rotate a lot of circles because tighten a bolt or nut, and common spanner can not rotate 360 degree, spanner need be taken off from bolt or nut, and then selects suitable angle repetitive operation, like this pull not only process complexity, inefficiency, and may cause the revolution of bolt or nut, make elasticity bolt or nut very inconvenient.

Therefore some ratchet spanneres occurred, can control spanner and only do unidirectional motion and can not cause revolution.As Chinese patent CN2389754Y disclosed " ratchet spanner ", this ratchet spanner is provided with a containing hole at the head of spanner, be provided with ratchet in it, spanner is established one and is held the storage tank of making tooth, the storage tank end is provided with one and holds the hole of bead, be provided with spring and steel ball in it, steel ball is replaced the system tooth, this ratchet spanner, though it is simple in structure, and the unidirectional rotation that can realize making tooth, but this ratchet spanner can only be controlled this ratchet spanner and dally left or to the right by this ratchet spanner of structure control of steel ball and system tooth, that is to say that this ratchet spanner has only two grades of control functions, bay not that is to say that this ratchet spanner can only dally or idle running left to the right, and bay can not dally in can not being fixed on.And such ratchet spanner is not very obvious and wayward when gear is changed.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of simple in structure, gear to control tangible ratchet spanner at above-mentioned prior art present situation.

The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of ratchet spanner, and the gear assembly and the brake assemblies that comprise head, handle portion and be positioned at head is characterized in that:

Connector and the bottom that is positioned at the gear member below that described gear assembly comprises gear member and is positioned at the gear member top, described gear member is positioned at the through hole of head, and described connector and bottom stretch out in the outside that this head is positioned at this head respectively;

Described brake assemblies is positioned at the groove of other, the close handle portion of through hole of described head, and this brake assemblies comprises middle controll block and the left and right control strip that is positioned at middle controll block both sides, have spring between the side of this left and right control strip and described groove respectively, an end of described left and right control strip blocks this gear member respectively from and arranged on left and right sides.The gear assembly of such ratchet spanner and the setting between the brake assemblies, can control left and right control strip with controll block and realize that the folk prescription of ratchet spanner is to locking and the equal twist-lock of both direction, and then realize that the clockwise, counterclockwise of spanner dallies, and makes things convenient for the degree of tightness of nut or bolt.

Assemble and fix this brake assemblies and gear assembly for convenience, described above-head also includes cover plate, and described cover plate is provided with the through hole that the connecting portion for gear assembly stretches out, and described cover plate is fixed by screw in the screw on it and head.

Locate this cover plate for convenience, also have the through hole that inserts for the top boss of middle controll block on the described cover plate.

In order to control left and right control strip better, described groove comprises the left and right ccontaining position that is used for ccontaining left and right control strip of its both sides, and it is circular-arc outstanding to the groove outside that the middle part at this left and right ccontaining position is, and this circular-arc outstanding position is used for putting spring.

Rotate controll block for convenience and then control left and right sides control strip and make gear member idle running, the bottom of controll block has and pulls the position and stretch out and be positioned at the outside, bottom surface that described groove is positioned at described head in the middle of described, and the outside, described bottom surface has ccontaining this and pulls the containing groove at position.

In order to control the left-right rotation of controll block better, the described position of pulling is provided with projection with respect to the face of containing groove, and described containing groove has and is complementary with described projection and is the pit that left, center, right distribute.

Preferably, have the hole that connects outer bolt or nut on the described connector, described bottom has the shape that connects outside different size sleeve.

Compared with prior art, the invention has the advantages that: this ratchet spanner is simple in structure, and the gear replacing of idle running left, idle running to the right or middle locking obviously, is easy to user's control and uses, and compact conformation, is easy to assemble and processing.

Description of drawings

Fig. 1 is the perspective view of the ratchet spanner of the embodiment of the invention.

Fig. 2 is the side view of the ratchet spanner of the embodiment of the invention.

Fig. 3 is the exploded view of the ratchet spanner of the embodiment of the invention.

Fig. 4 is the cutaway view along A-A ' line among Fig. 2 of the embodiment of the invention.

Fig. 5 is the gear assembly of ratchet spanner of the embodiment of the invention and the perspective view of brake assemblies.

The specific embodiment

Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.

Ratchet spanner of the present invention, shown in Fig. 1-5, comprise the head 1 of spanner and the handle portion 2 that links to each other with head 1, the through hole 11 that has a ccontaining gear assembly on this head 1, the bottom 31 of this gear assembly stretches out in this through hole 11, the gear member 32 of gear assembly places in the step of this through hole 11, and the top of gear member 32 has the head 1 that a connector 33 stretches out in this spanner, and the hole that can have different shape on this connector 33 is used to connect outside nut or bolt.The bottom 31 that this gear assembly stretches out in head 1 also can be cube, become box spanner thereby the shape of this bottom 31 can be designed to connect the sleeve of different size, the sleeve of different size goes for connecting parts such as the screw of extraneous different size or nut.

Through hole 11 other, close handle 2 sides at this head 1 also have the groove 12 that holds brake assemblies, two brake(-holder) blocks 41,42 about brake assemblies comprises, and the middle controll block 43 between left and right brake(-holder) block 41,42, respectively have a spring 51,52 between this left and right brake(-holder) block 41,42 and the groove 12.The left and right sides of groove 12, the left and right ccontaining position 121,122 that ccontaining left and right control strip 41,42 is arranged respectively, it is outstanding to the groove outside that the middle part at left and right ccontaining position 121,122 is circular arc, and this circular arc middle part is used for the spring 51,52 between ccontaining left and right control strip 41,42 and the groove 12.Middle controll block 43 is when the centre position, left and right brake(-holder) block 41,42 since the effect of spring 51,52 away from the left and right ccontaining position 121,122 of groove 12, therefore, left and right control strip 41,42 just in time blocks the gear member 32 in the through hole 11, gear member 32 can not be rotated with respect to through hole, that is to say and to rotate with respect to this ratchet spanner, at this moment, this ratchet spanner is equivalent to common wrench, and the nut 33 that is connected in connector 33 and then rotates by the rotation of spanner 2.

When this centre controll block 43 turns to the right or the left side, as shown in Figure 4, this centre controll block 43 turns to the right, and compression is by the spring 52 between control strip 42 and the groove 12, at this moment, left side control strip 41 returns to a side of groove 12, be butted in the ccontaining position 121 in groove 12 left sides, at this moment, left side control strip 41 has been removed the locking to gear member 32, but right control strip 42 has still propped up gear member 32, and this moment, gear member 32 can only counterclockwise rotate with respect to through hole 11, because when gear member counterclockwise rotates, owing to have spring between right control strip 42 and the groove 12, gear member 32 can drive right control strip 42 compression springs 52 and counterclockwise rotate, and gear member 32 is when clockwise rotating, and right control strip 42 has propped up gear member 32 can not rotate it.That is to say when pulling spanner, when spanner rotates counterclockwise, gear member 32 and be connected nut on the connector 33 or bolt because the locking action of right control strip 42 can follow spanner to rotate counterclockwise, and spanner is when clockwise rotating, gear member 32 and the nut or the bolt that are connected on the connector 33 can rotate counterclockwise with respect to through hole 11, can not follow the spanner revolution, therefore realized the clockwise idle running of spanner, can be quick and little space in pull the spanner slack adjuster.In like manner, when middle controll block 43 turns to the left side, when spanner clockwise rotates, gear member 32 and the nut or the bolt that are connected on the connector 33 can follow spanner to clockwise rotate, and spanner is when rotating counterclockwise, gear member 32 and the nut or the bolt that are connected on the connector 33 can not followed the spanner revolution, have therefore realized the counterclockwise idle running of spanner.

Also this has cover plate 6 for the gear member 32 of this spanner and the top of groove 12, has screw 61 on the cover plate 6, cover plate 6 is fixed on the head 1 of spanner by screw, having through hole 62 on the cover plate 6 is used for passing for the connector 33 of gear assembly, have through hole 63 and pass for the top boss 45 of middle controll block 43, and then the position of fixed cap cover plate 1.This cover plate 6 all is enclosed in brake assemblies and gear member 32 etc. in the head 1 of spanner.This cover plate 6 can form with the head injection moulding is fixing, also can be to fix by screw in addition, as long as play gear assembly and brake assemblies in the sealing head 1.

And the outside, bottom surface that bottom surface that position 44 stretches out in groove 12 is positioned at groove 12 is pulled in the bottom of this centre controll block 43, as Fig. 1, shown in 5, this pulls the movable groove 13 that position 44 is positioned at the outside, bottom surface of Wrench head 1, can be in the scope of movable groove 13 left-right rotation, and this is pulled position 44 and movable groove 13 relative faces and is provided with projection 441, movable groove 13 is respectively equipped with three with respect to this projection and is a left side, in, part the pit 131 of cloth on the right side, this projection 441 cooperates the location, and this pulls position 44 with pit 131, thereby controls the position of this centre controll block 43.Therefore the gear of idle running is more obvious about this spanner control, and this spanner structure is simple, and assembling and processing are all very convenient, and cost low, be easy to produce in batches.

In addition to the implementation, the present invention also includes other embodiments, and the technical scheme that all employing equivalents or equivalent substitute mode form all should fall within the protection domain of claim of the present invention.

Claims (7)

1. a ratchet spanner comprises head (1), handle portion (2) and the gear assembly and the brake assemblies that are positioned at head (1), it is characterized in that:

Described gear assembly comprises gear member (32) and is positioned at the connector (33) of gear member (32) top and is positioned at bottom (31) below the gear member (32), described gear member (32) is positioned at the through hole (11) of head (1), and described connector (33) and bottom (31) stretch out in the outside that this head (1) is positioned at this head (1) respectively;

Described brake assemblies is positioned at the groove (12) of other, the close handle portion (2) of through hole (11) of described head (1), and this brake assemblies comprises middle controll block (43) and the left and right control strip (41,42) that is positioned at middle controll block both sides, have spring (51,52) between the side of this left and right control strip (41,42) and described groove (12) respectively, an end of described left and right control strip (41,42) blocks this gear member (32) respectively from and arranged on left and right sides.

2. ratchet spanner as claimed in claim 1, it is characterized in that: described head (1) top also includes cover plate (6), described cover plate (6) is provided with the through hole (61) that the connecting portion (33) for gear assembly stretches out, and described cover plate (61) is fixed by screw in the screw (62) on it and head (1).

3. ratchet spanner as claimed in claim 2 is characterized in that: also have the through hole (63) that inserts for the top boss (45) of middle controll block (43) on the described cover plate (6).

4. ratchet spanner as claimed in claim 1, it is characterized in that: described groove (12) comprises the left and right ccontaining position that is used for ccontaining left and right control strip (41,42) (121,122) of its both sides, and it is circular-arc outstanding to groove (12) outside that the middle part at this left and right ccontaining position (121,122) is, and this circular-arc outstanding position is used for putting spring (51,52).

5. ratchet spanner as claimed in claim 1, it is characterized in that: the bottom of controll block (43) has and pulls position (44) and stretch out and be positioned at the bottom surface outside that described groove (12) is positioned at described head (1) in the middle of described, and the outside, described bottom surface has ccontaining this and pulls the containing groove (13) of position (44).

6. ratchet spanner as claimed in claim 5, it is characterized in that: the described position (44) of pulling is provided with projection (441) with respect to the face of containing groove (13), and described containing groove (13) has and is complementary with described projection (441) and is the pit (131) that left, center, right distribute.

7. as each described ratchet spanner of claim 1-6, it is characterized in that: have the hole that connects outer bolt or nut on the described connector (33), described bottom (31) have the shape that connects outside different size sleeve.

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