TWM483145U - Ratchet-type open-end spanner - Google Patents

Description

Ratchet open end wrench

The present invention provides a ratchet type open end wrench, especially an open end wrench capable of driving a one-way elastic screw by a reciprocatingly pulling the grip.

The prior art is as shown in the patent application No. 093212410, which is mainly provided with a groove in one of the heads, so that the space formed by the groove and the mouth is available for the screw (referred to as the bolt head, The nut is rotated therein, and the clamping member is disposed obliquely. When the reaction force of the screw is close to the radial direction of the clamping rod, the clamping rod can be clamped with the other jaw and the screw is driven. Rotate, when the reaction force of the bolt is close to the axial direction of the clamping rod, the clamping rod will be pushed in and out.

However, when the patent is in the case of tightening the screw, the clamping rod of the protruding class hole must absorb the considerable stress, resulting in a structural change of stress concentration at the intersection of the clamping rod and the class hole, which is easily accessible from the place. The distortion or cracking causes the clamping rod to lose its original function, so that the ratcheting open-end wrench cannot be used any more. In this regard, there is a need for improvement.

In view of this, the creator has carefully researched and improved, and after years of experience in this industry, he developed this new model.

The utility model provides a ratchet type open end wrench, which comprises at least: a body having a head seat and a grip capable of rotating the head seat; the head seat is provided with a throat connected to the grip, and the throat is left, The right side is provided with a first side and a second side, and the first side has a clamping surface, and the second side has a clamping surface facing the clamping surface for forming the opening facing forward and sufficient to provide The screw member rotates the mouth of the screw, and the card surface is more concavely provided with a groove, the groove is connected with the front edge of the cassette; a ratchet block can be along the groove between the first position and the second position The limit moves, and the outer end has a card edge that can be retracted along the front edge of the cassette; and at least one spring provides the predetermined elastic force of the ratchet to actuate the card edge in an extended state, so that the elastic snail can be elasticized The piece is inserted into the clamping surface and the clamping surface, and the edge of the card can be pushed by the spring to engage between the front edge of the latch and the side of the screw. As for the opposite parallel sides of the screw, the clamping surface is restricted to facilitate the grip. The hour hand applies force, but when the grip rotates counterclockwise, the screw has to retract the card edge to automatically In addition to the card edge engagement.

Therefore, in the case of the elastic screw, the present invention mainly bears the stress by the back side of the card edge against the surface of the card. This structural design greatly reduces the damage of the torque to the ratchet. It is indeed an existing ratchet open end wrench. A novel technique for effectively extending the service life is proposed.

W‧‧‧ screw

10‧‧‧ Ontology

11‧‧‧ head seat

12‧‧‧ grip

13‧‧‧ throat

131‧‧‧second concave curved surface

14‧‧‧ first

141‧‧ ‧ guiding surface

142‧‧‧Car face

143‧‧‧Intermediary slot

15‧‧‧Second

151‧‧‧ clamping surface

152‧‧‧ first concave curved surface

16‧‧‧颚口

17‧‧‧匣槽

171‧‧‧ tip hole

172‧‧‧guide

20‧‧‧thorn

21‧‧‧ Guide slot

22‧‧‧ card edge

30, 300‧‧ ‧ spring

The first figure is an exploded view of the novel.

The second figure is a three-dimensional combination diagram of the present invention.

The third figure is a schematic top view of the combination of the present invention.

The fourth figure is a schematic side view of the combination of the present invention.

The fifth figure is a schematic cross-sectional view of the novel.

The sixth figure is a schematic diagram of the implementation of the novel airback operation.

The seventh and eighth figures are schematic views of the second embodiment of the present invention.

The ninth and tenth drawings are schematic views of the third embodiment of the present invention.

Please refer to the first to sixth figures. The present invention includes at least a body 10 having a headstock 11 and a grip 12 for the person to rotate the headstock 11 so that the head 11 has a tightening screw W (pan) Refers to the bolt head and the nut; the head base 11 has a throat 13 connected to the grip 12, and the left and right sides of the throat 13 are provided with a first weir 14 and a second weir 15 respectively. The cymbal 14 has a guiding surface 141 and a concave arcuate surface 142 from the front to the rear, and the second cymbal 15 has a clamping surface 151 and a first concave curved surface 152 from the front to the rear. The guiding surface 141, the clamping surface 142, the clamping surface 151, the first concave curved surface 152 and the throat 13 form an opening 16 facing the front, so that the distance between the clamping surface 151 and the guiding surface 141 is correct The two parallel sides of the screw member W are provided, and the distance between the clamping surface 151 and the latching surface 142 and the first concave curved surface 152 is just enough for the screw W to rotate, and the throat 13 is at the first concave curved surface 152. A second concave curved surface 131 is disposed between the clamping faces 142. The first concave curved surface 152 and the second concave curved surface 131 can assist the rotation of the screw W between the clamping surface 151 and the locking surface 142. And the card face 142 is recessed with a concave The arcuate intermediate groove 143 is further recessed with a groove 17 which is connected to the leading edge of the latching surface 142, and the first weir 14 is further provided with a tip extending through the upper and lower sides and communicating with the groove 17. a hole 171, the tip hole 171 is provided with a guide tip 172 erected in the groove 17; a ratchet block 20 is inserted into the groove 17 through the intermediate groove 143 so as to be able to slide along the limit of the groove 17 And having a guiding slot 21 for matching the guiding tip 172 for enabling the ratchet block 20 to move between the first position and the second position, and the outer end of the spine block 20 has a corresponding edge The card edge 22 of the leading edge 142 of the front surface 142 is substantially cylindrical, the circumferential surface of the card edge 22 is capable of abutting against the leading edge of the latching surface 142; and a spring 30 is disposed in the groove 17 One end abuts against the bottom end of the gutter 17 and the other end abuts the rear end of the spine 20 to provide a predetermined elastic force of the ratchet 20 to urge the card edge 22 to be in an extended state, as shown in FIG. The card screw 22 is elastically inserted into the clamping surface 151 and the latching surface 142, and the circumferential surface of the card edge 22 can be pushed by the spring 30 to remain engaged with the leading edge of the latching surface 142 and the screw W side. As for The opposite side of the screw W is restricted by the clamping surface 151, so that the grip 12 can be screwed clockwise by the force of the gripper 12, please refer to the sixth figure, but when the grip 12 is rotated counterclockwise, the adjustment is applied. When the angle or position of the force is applied, the screw W is forced to retract against the spring force of the spring 30 to automatically release the state in which the card edge 22 is engaged with the front edge of the latching surface 142 and the side of the screw W, so that the screw member W can rotate relative to each other between the first concave curved surface 152, the second concave curved surface 131, the clamping surface 151 and the latching surface 142, like a general ratchet Adjust the angle or position of the grip 12 by a wrench.

According to the structure and the operation described above, it is further known that when the card edge 22 of the new ratchet block 20 is subjected to the stress of the screwing screw W, the proximal side of the ratchet block 20 abuts against the leading edge of the latching surface 142, so that it can be greatly Reducing the damage of the stress on the spine block 20 can indeed improve the shortcomings of the deformation or cracking of the clamping rod in the prior patent, thereby effectively extending the service life.

Please refer to the seventh and eighth figures, which illustrate that the novel spring 30 can be mounted in the guide groove 21 such that one end abuts against the guide tip 172 and the other end abuts against the front end of the guide groove 21 to provide a ratchet block. 20 preset spring force to urge the card edge 22 to be in an extended state.

Please refer to the ninth and tenth drawings, which illustrate that the two springs 30, 300 simultaneously act on the spine block 20, so that a spring 30 is received in the gutter 17, and one end thereof abuts against the bottom end of the gutter 17, The other end is abutting against the rear end of the ratchet block 20; the other spring 300 is mounted in the guide groove 21, one end of which abuts against the guide end 172, and the other end abuts against the front end of the guide groove 21; thereby making the two springs 30 , 300 simultaneously provides a preset spring force of the ratchet 20 to urge the card edge 22 to be in an extended state.

In summary, the overall structure of the new model has completely broken through the shortcomings of the reform, and is a high-level creation of a technical concept, which should meet the requirements of the patent application, and apply in accordance with the law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereto, that is, the equal variation and modification of the scope of the patent application of the present invention should still belong to the present invention. Within the scope of coverage.

W‧‧‧ screw

10‧‧‧ Ontology

11‧‧‧ head seat

12‧‧‧ grip

13‧‧‧ throat

131‧‧‧second concave curved surface

14‧‧‧ first

141‧‧ ‧ guiding surface

142‧‧‧Car face

143‧‧‧Intermediary slot

15‧‧‧Second

151‧‧‧ clamping surface

152‧‧‧ first concave curved surface

171‧‧‧ tip hole

172‧‧‧guide

20‧‧‧thorn

21‧‧‧ Guide slot

22‧‧‧ card edge

30‧‧‧ Spring

Claims (9)

A ratchet type open end wrench includes at least a body having a head seat and a grip capable of rotating the head base; the head seat is provided with a throat connected to the grip, and the left and right sides of the throat are corresponding The first side and the second side are arranged forwardly, and the first side has a card surface, and the second side has a clamping surface facing the card surface to form the opening facing forward and sufficient to provide the screw rotation. The mouth of the card has a groove which is recessed to the front edge of the cassette; a ratchet block is movable along the position of the groove between the first position and the second position, And the outer end has a card edge which can be correspondingly stretched along the front edge of the cassette; and at least one spring which provides the predetermined elastic force of the ratchet to urge the card edge to be in an extended state, so that the elastic member can be inserted and clamped according to the screw. The surface is opposite to the surface of the card, and the edge of the card can be pushed by the spring to engage between the front edge of the latch and the side of the screw. As for the opposite sides of the screw, the clamping surface is restricted, so that the grip is biased clockwise. However, when the grip is rotated counterclockwise, the screw member is forced to retract the card edge to automatically release the card edge engagement. State. The ratcheting open end wrench according to claim 1, wherein the first side has a guiding surface and a clamping surface from the front to the rear, and the second side has a clamping surface and a first concave from the front to the rear. The curved surface is such that the guiding surface, the clamping surface, the clamping surface, the first concave curved surface and the throat form an opening with the opening facing forward, so that the distance between the clamping surface and the guiding surface can correct the screw Parallel edges pass. The ratcheting open end wrench according to claim 2, wherein the throat is provided with a second concave curved surface between the first concave curved surface and the latching surface, and the first concave curved surface and the second concave curved surface can assist The providing screw rotates between the clamping surface and the clamping surface. The ratcheting open end wrench of 2 or 3, wherein the latching surface is recessed with an intermediate groove, and the groove is recessed in the intermediate groove. The ratchet type open end wrench according to claim 1, wherein the first side is provided with a tip hole extending through the upper and lower sides and communicating with the groove, the tip hole is provided with a guide end erected in the groove; the spine block has a guiding end A matching guide groove for moving the ratchet between the first position and the second position. The ratchet type open end wrench according to claim 5, wherein the spring is mounted in the guide groove so that one end abuts against the guide tip and the other end abuts against the front end of the guide groove. The ratcheting open end wrench according to claim 5, wherein the two springs simultaneously act as a ratchet block, so that a spring system is placed in the gutter, one end of which is abutted against the bottom end of the gutter, and the other end is abutted. The other spring is mounted in the guide groove, one end of which abuts against the guide tip, and the other end abuts against the front end of the guide groove. The ratcheting open end wrench according to claim 1, wherein the card edge is substantially cylindrical, and the cylindrical circumferential surface is capable of abutting between the front edge of the cassette and the side of the screw. The ratchet type open end wrench according to claim 1, wherein the spring system is placed in the gutter so that one end abuts against the bottom end of the gutter and the other end abuts the rear end of the ratchet.