CN115625663A - Handle - Google Patents

Abstract

The invention relates to the technical field of wrenches, in particular to a handle, which comprises: a ratchet seat; a ratchet wheel; the two pawls are arranged in a mutually crossed manner; the supporting shaft penetrates through the crossed part of the two pawls, and the two pawls can rotate circumferentially relative to the supporting shaft; the two torsion springs are sleeved on the supporting shaft, correspond to the two pawls respectively and are used for providing circumferential rotating force for the corresponding pawls, and the directions of the circumferential rotating forces borne by the two pawls are opposite; and a directional block, the top end of which can swing leftwards or rightwards relative to the tail end of the directional block. This handle does not contain the pressure spring, and ratchet seat and relevant part need not to set up the counter bore that is used for the holding spring, and the ratchet seat can one shot die-casting shaping or casting shaping, need not to carry out the hole milling operation, and the assembly is swift convenient, and the part is difficult for dropping, and during ratchet rotation, the back extrusion force direct transfer that the pawl received can not act on the torsional spring for the back shaft, and the torsional spring is longe-lived, has effectively prolonged the life of handle.

Description

Handle

Technical Field

The invention relates to the technical field of wrenches, in particular to a handle.

Background

The ratchet wrench is a manual screw tightening tool, so that a user can well perform auxiliary tightening and loosening on a bolt or a nut. Most of the conventional ratchet wrenches need to adopt the matching of a pressure spring and a tooth block to limit the unidirectional rotation of a ratchet wheel, or adopt the matching of the pressure spring and a pawl to limit the unidirectional rotation of the pawl. Because of the existence of the pressure spring, the counter bore used for containing the pressure spring needs to be opened to the medial surface of the ratchet seat of spanner or the side of the rest spare parts of handle to lead to the ratchet seat or this spare part can't disposable die-casting shaping or casting shaping, need carry out the hole milling after the pouring and handle, increased ratchet spanner's manufacturing cost to a certain extent. And because the pressure spring needs to be assembled in the counter bore, and need compress the pressure spring and lead to the pressure spring to have certain elasticity during the assembly, need adopt work piece or hand to compress tightly the pressure spring in order to avoid the pressure spring to pop out and drop when the assembly, the assembly degree of difficulty is higher, has restricted ratchet spanner production efficiency's improvement to a certain extent.

For example, patent application No. 201721485804.0, entitled D-head ratchet wrench and its wrench head. The ratchet wheel locking device is provided with a toggle button 3, a slot hole 33, a tooth block 6 meshed with a ratchet wheel, a spring block 7 and a concave hole 71, wherein the tooth block 6 is meshed with the ratchet wheel, the front end of the spring block 7 is abutted against the back face of the tooth block 6, a spring is arranged in the concave hole 71, the spring block 7 is arranged in the slot hole 33, and the front end of the spring block extends out of the slot hole 33 and is abutted against the back face of the tooth block. The front end of the spring block 7 is adjusted to swing by controlling the swing of the toggle button 3, so that the abutting angle of the spring block 7 and the tooth block 6 is changed, the tooth block 6 is inclined, and the unidirectional rotation adjustment of the ratchet wheel is completed. This patent application has set up two counter bores of shrinkage pool 71 and slotted hole 33, and the unable one shot forming of ratchet seat obtains, and follow-up hole milling operation twice that need carry out is processed the cost of work higher. And in the actual use, when rotating the ratchet, when tooth piece 6 promoted the ratchet and rotated, produce the interaction power between the flank of tooth of ratchet and the action face of tooth piece 6 and can transmit spring block 7 and extrusion spring, can produce fatigue after long-time the use, elasticity weakens, leads to the meshing of tooth piece 6 and ratchet not inseparable and can't drive the ratchet and rotate, the unable normal use of spanner.

Disclosure of Invention

In order to overcome the defects and shortcomings in the prior art, the invention aims to provide the handle which does not comprise a pressure spring, the ratchet seat and related components do not need to be provided with counter bores for accommodating the spring, the ratchet seat can be formed by one-time die casting or casting, hole milling operation is not needed, the assembly is rapid and convenient, parts are not easy to drop, when the ratchet wheel rotates, reverse extrusion force applied to the pawl is directly transmitted to the supporting shaft, the reverse extrusion force cannot act on the torsion spring, the service life of the torsion spring is long, and the service life of the handle is effectively prolonged.

The purpose of the invention is realized by the following technical scheme: a handle, comprising:

the ratchet wheel seat is internally provided with a shaft hole and an accommodating groove, and the accommodating groove is communicated with the side surface of the shaft hole;

the ratchet wheel is arranged in the shaft hole;

the two pawls are positioned below the ratchet wheel, arranged in the accommodating groove and arranged in a mutually crossed manner;

the supporting shaft sequentially penetrates through the crossed parts of the two pawls, and the two pawls can rotate circumferentially relative to the supporting shaft;

the two torsion springs are sleeved on the supporting shaft, correspond to the two pawls respectively and are used for providing circumferential rotating force for the corresponding pawls, and the directions of the circumferential rotating forces borne by the two pawls are opposite;

and the directional block is positioned below the supporting shaft, the top of the directional block is convexly provided with a reversing bulge, the two sides of the directional block are symmetrically provided with butting bulges, the two sides of the directional block are symmetrically provided with avoidance planes, and the top end of the directional block can swing leftwards or rightwards relative to the tail end of the directional block.

Wherein, the handle still includes:

one end of the reversing shaft is fixedly connected with the directional block, and the other end of the reversing shaft extends out of the accommodating groove;

and the end part of the reversing deflector rod is fixedly connected with the other end part of the reversing shaft and is used for driving the reversing shaft to rotate so as to drive the directional block to swing.

Wherein, the handle still includes: the first limiting groove is formed in the outer side face of the lower section of the pawl, one end of the torsion spring is arranged in the first limiting groove, and the other end of the torsion spring is abutted to the side wall of the accommodating groove.

Wherein, the handle still includes: two second spacing grooves, it is relative the back shaft symmetry sets up and is located the top of back shaft, the other end of torsional spring sets up in the second spacing inslot that corresponds.

Wherein, the handle still includes:

the arc-shaped groove is formed in the ratchet seat and located below the orientation block, and a notch is formed in the middle section of the arc-shaped groove;

the middle part of the elastic sheet is provided with an arc-shaped bulge which is arranged in the arc-shaped groove, and the arc-shaped bulge passes through the notch and then extends into the accommodating groove;

and one of the arc concave surfaces is arranged on the lower end surface of the orientation block, the rest two arc concave surfaces are respectively arranged at two corners of the lower end of the orientation block, and one of the arc concave surfaces is matched and connected with the arc bulge.

Wherein, the handle still includes: and the cover plate is used for covering the accommodating groove and the shaft hole.

Wherein, the handle still includes: the step is arranged at the periphery of the opening end of the containing groove and the shaft hole, and the periphery of the cover plate is arranged in the step and fixed on the ratchet seat through screws.

Wherein, the handle still includes:

the connector is fixed at one end of the ratchet wheel and extends out of the cover plate, and a hexagonal counter bore is formed in the end part of the connector;

and the connecting shaft is fixed at the other end of the ratchet wheel.

The supporting shaft is a bolt, and the bolt penetrates through the two pawls in sequence and then is in threaded connection with the ratchet seat.

Wherein, the handle still includes: the end part of the hand-held part is fixedly connected with the end part of the ratchet wheel seat, and an included angle of 10-30 degrees is formed between the hand-held part and the ratchet wheel seat.

The invention has the beneficial effects that:

the directional block swings rightwards, the abutting protrusion is separated from the two pawls, the reversing protrusion abuts against the tail end of one pawl and drives the upper end of the pawl to swing downwards, the pawl is far away from the ratchet wheel, the tail end of the other pawl is separated from the abutting protrusion and then swings downwards for a certain distance and abuts against an avoiding plane on the left side of the directional block, the upper end of the pawl swings upwards and is meshed with the tooth surface of the ratchet wheel, at the moment, the ratchet wheel can be driven to rotate towards the anticlockwise direction, the directional block swings back to the initial position, then the two pawls are separated from the ratchet wheel, and the ratchet wheel cannot be driven to rotate. Conversely, the drive orientation block swings left to drive the ratchet wheel to rotate clockwise.

At this application drive ratchet pivoted in-process, the upper end of pawl with the flank of tooth butt of ratchet, the upper end extrusion of pawl promotes the ratchet and rotates, and the pawl receives ratchet reverse action's extrusion force to directly transmit this extrusion force to the back shaft, this effort can not act on the torsional spring and lead to the torsional spring to take place elastic fatigue prematurely, and the torsional spring only need for the pawl provide circumferential direction's elastic force can, working strength is low, long service life. The wrench overcomes the defect that the existing patent application 201721485804.0 is used for driving the ratchet wheel to rotate, the backward extrusion force acts on the spring, the spring fatigue is easily caused, the wrench cannot be used continuously, and the service life of the wrench is greatly shortened. Meanwhile, the ratchet seat does not need to be provided with a counter bore which is perpendicular to the shaft hole and used for containing the spring, the ratchet seat can be formed by one-step die casting or casting, hole milling is not needed subsequently, two counter bores need to be formed in the part of patent application 201721485804.0 through hole milling operation, the process is increased, and the cost is high. And the equipment of the spare part of the handle of this application is convenient and fast more, and assembly work can be accomplished fast by hand, and patent application 201721485804.0 needs the compression pressure spring and leads to the pressure spring to have certain elasticity when the assembly, need adopt work piece or hand to compress tightly the pressure spring in order to avoid the pressure spring to pop out and drop when the assembly, and the assembly degree of difficulty is higher, has restricted ratchet spanner production efficiency's improvement to a certain extent.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is an exploded schematic view of the present invention;

FIG. 3 is a schematic view of the internal structure of the present invention;

fig. 4 is a perspective view of the orientation block of the present invention.

The reference signs are: the ratchet wheel seat 1, the shaft hole 2, the accommodating groove 3, the ratchet wheel 4, the pawl 5, the supporting shaft 6, the torsion spring 7, the orientation block 8, the reversing protrusion 9, the abutting protrusion 10, the avoiding plane 11, the reversing shaft 12, the reversing deflector rod 13, the first limiting groove 14, the second limiting groove 15, the arc-shaped groove 16, the arc-shaped concave surface 17, the cover plate 18, the step 19, the screw 20, the connecting head 21, the connecting shaft 22, the handheld portion 23, the elastic sheet 24 and the arc-shaped protrusion 25.

Detailed Description

For the convenience of understanding of those skilled in the art, the present invention will be further described with reference to the following examples and fig. 1 and 4, which are not intended to limit the present invention.

A handle, comprising:

the ratchet wheel seat 1 is internally provided with a shaft hole 2 and a containing groove 3, and the containing groove 3 is communicated with the side surface of the shaft hole 2;

the ratchet wheel 4 is arranged in the shaft hole 2;

the two pawls 5 are positioned below the ratchet wheel 4, arranged in the accommodating groove 3 and arranged in a mutually crossed manner;

the supporting shaft 6 sequentially penetrates through the crossed parts of the two pawls 5, and the two pawls 5 can rotate circumferentially relative to the supporting shaft 6;

the two torsion springs 7 are sleeved on the support shaft 6, respectively correspond to the two pawls 5, and are used for providing circumferential rotating force for the corresponding pawls 5, and the directions of the circumferential rotating forces received by the two pawls 5 are opposite;

and the directional block 8 is positioned below the supporting shaft 6, the top of the directional block is convexly provided with a reversing bulge 9, the two sides of the directional block are symmetrically provided with butting bulges 10, the two sides of the directional block are symmetrically provided with avoidance planes 11, and the top end of the directional block 8 can swing leftwards or rightwards relative to the tail end of the directional block.

The directional block 8 swings rightwards, the abutting protrusion 10 is separated from the pawl 5, the reversing protrusion 9 abuts against the tail end of one pawl 5 and drives the upper end of the pawl 5 to swing downwards, the pawl 5 is far away from the ratchet wheel 4, the tail end of the other pawl 5 is separated from the abutting protrusion 10 and then swings downwards for a certain distance and abuts against an avoiding plane 11 on the left side of the directional block 8, the upper end of the pawl 5 swings upwards and is meshed with the tooth surface of the ratchet wheel 4, at the moment, the ratchet wheel 4 can be driven to rotate towards the anticlockwise direction, the directional block 8 swings back to the initial position, then the two pawls 5 are separated from the ratchet wheel 4, and the ratchet wheel 4 cannot be driven to rotate. Conversely, driving the directional block 8 to swing to the left can drive the ratchet 4 to rotate clockwise.

At this application drive ratchet 4 pivoted in-process, the upper end of pawl 5 with ratchet 4's flank of tooth butt, the upper end extrusion of pawl 5 promotes ratchet 4 and rotates, and pawl 5 receives ratchet 4 reverse action's extrusion force to directly transmit this extrusion force to back shaft 6, this effort can not act on torsional spring 7 and lead to torsional spring 7 to take place elastic fatigue prematurely, and torsional spring 7 only need for pawl 5 provide circumferential direction's elastic force can, working strength is low, long service life. The wrench overcomes the defect that the existing patent application 201721485804.0 is used for driving the ratchet 4 to rotate, the reverse extrusion force acts on the spring, the spring fatigue is easily caused, the wrench cannot be used continuously, and the service life of the wrench is greatly shortened. Meanwhile, the ratchet seat 1 does not need to be provided with a counter bore which is perpendicular to the shaft hole 2 and used for containing the spring, can be formed by one-time die casting or casting, and does not need to mill holes subsequently, and two counter bores are required to be milled in the parts of the patent application 201721485804.0, so that the process is increased, and the cost is high. And the equipment of the spare part of the handle of this application is convenient and fast more, and manual alright accomplish assembly work fast, and patent application 201721485804.0 need compress the pressure spring and lead to the pressure spring to have certain elasticity when the assembly, need adopt work piece or hand to compress tightly the pressure spring and pop out and drop in order to avoid the pressure spring when the assembly, and the assembly degree of difficulty is higher, has restricted ratchet 4 spanner production efficiency's improvement to a certain extent.

Specifically, the upper end of the pawl 5 engages with the tooth-shaped structure of the ratchet 4.

Wherein, the handle still includes:

one end of the reversing shaft 12 is fixedly connected with the directional block 8, and the other end of the reversing shaft extends out of the accommodating groove 3;

and the end part of the reversing deflector rod 13 is fixedly connected with the other end part of the reversing shaft 12 and is used for driving the reversing shaft 12 to rotate so as to drive the orientation block 8 to swing.

Specifically, the reversing shaft 12 passes through the cover plate 18 and then extends out of the ratchet wheel seat 1 to be fixedly connected with one end of the reversing shift lever 13.

Wherein, the handle still includes: the first limiting groove 14 is formed in the outer side face of the lower section of the pawl 5, one end of the torsion spring 7 is arranged in the first limiting groove 14, and the other end of the torsion spring 7 is abutted to the side wall of the accommodating groove 3.

Wherein, the handle still includes: two second spacing grooves 15, it is relative back shaft 6 symmetry sets up and is located back shaft 6's top, the other end of torsional spring 7 sets up in the second spacing groove 15 that corresponds.

Specifically, second spacing groove 15 is V type groove, through the both ends of first spacing groove 14 and the fixed torsional spring 7 of second spacing groove 15, the good difficult not hard up of stability of torsional spring 7.

Wherein, the handle still includes:

the arc-shaped groove 16 is formed in the ratchet seat 1 and is positioned below the directional block 8, and a gap is formed in the middle section of the arc-shaped groove;

the middle part of the elastic sheet 24 is provided with an arc-shaped bulge 25 which is arranged in the arc-shaped groove 16, and the arc-shaped bulge 25 passes through the notch and then extends into the accommodating groove 3;

and three arc concave surfaces 17, wherein one arc concave surface 17 is arranged on the lower end surface of the orientation block 8, the remaining two arc concave surfaces 17 are respectively arranged at two corners of the lower end of the orientation block 8, and one arc concave surface 17 is matched and connected with the arc bulge 25.

Specifically, when the orientation block 8 swings, the arc protrusion 25 of the elastic sheet 24 is pressed to deform and contract downwards, the arc protrusion 25 is separated from the arc concave surface 17 located on the lower end face of the orientation block 8, the arc protrusion 25 rebounds and is clamped into the arc concave surface 17 located on the side, the structural design that the elastic sheet 24 is matched with the arc protrusion 25 is adopted, the deformation amount of the downward contraction of the elastic sheet 24 and the arc protrusion 25 is large, and the reversing shifting lever 13 can be shifted more smoothly.

Wherein, the handle still includes: and the cover plate 18 is used for covering the accommodating groove 3 and the shaft hole 2. The cover plate 18 is arranged to keep the shaft hole 2 and the accommodating groove 3 in a good sealing structure, so that the increase of the abrasion amount of the tooth surface of the ratchet 4 caused by the entering of dust is avoided.

Wherein, the handle still includes: and the step 19 is arranged on the periphery of the opening ends of the accommodating groove 3 and the shaft hole 2, and the periphery of the cover plate 18 is arranged in the step 19 and is fixed on the ratchet seat 1 through a screw 20. The step 19 can play a good limiting and positioning role for the cover plate 18, and is convenient for quick positioning and assembly of the cover plate 18.

Wherein, the handle still includes:

the connector 21 is fixed at one end of the ratchet 4 and extends out of the cover plate 18, and a hexagonal counter bore is formed in the end part of the connector 21;

and a connecting shaft 22 fixed to the other end of the ratchet 4.

The supporting shaft 6 is a bolt, and the bolt sequentially penetrates through the two pawls 5 and then is in threaded connection with the ratchet seat 1.

Wherein, the handle still includes: the end part of the hand-held part 23 is fixedly connected with the end part of the ratchet wheel seat 1, and an included angle of 10-30 degrees is formed between the hand-held part 23 and the ratchet wheel seat 1. The distance between the handheld part 23 and the screwed part can be increased due to the arrangement of the included angle, the moving space of a human hand is increased, and the handle is more convenient to use and operate.

Preferably, the hand-held part 23 forms an angle of 15 degrees with the ratchet wheel seat 1.

In the actual assembly process of the invention, two torsion springs 7 are respectively assembled on two pawls 5, one end of each torsion spring 7 is inserted into a first limiting groove 14, a support shaft 6, namely a bolt, sequentially penetrates through the two pawls 5 and the torsion springs 7, then the two pawls 5 are placed into a containing groove 3, the other end of each torsion spring 7 is placed into a second limiting groove 15, the bolts are in threaded connection with a ratchet seat 1 to complete the fixation of the pawls 5, a ratchet 4 is placed into a shaft hole 2 and is placed into an orientation block 8, due to the acting force of the torsion springs 7, the lower sections of the two pawls 5 clamp the two sides of the orientation block 8, the inner side surfaces of the pawls 5 are abutted against abutting bulges 10, then elastic pieces 24 are inserted into arc-shaped grooves 16, the arc-shaped bulges 25 of the elastic pieces 24 penetrate through the notches and are clamped into arc-shaped concave surfaces 17 positioned on the lower end surfaces of the orientation block 8 to complete the limitation of the orientation block 8, the orientation block 8 cannot swing leftwards or rightwards, a cover plate 19 is covered and then a reversing lever 13 is fixed on a reversing shaft 12, and at the upper ends of the two pawls 5 are separated from the tooth surfaces of the ratchet 4. The directional block 8 is driven to swing rightwards through the reversing deflector rod 13, the abutting protrusion 10 is separated from the pawl 5, the reversing protrusion 9 abuts against the tail end of one pawl 5 and drives the upper end of the pawl 5 to swing downwards, the pawl 5 is far away from the ratchet wheel 4, the tail end of the other pawl 5 swings downwards for a certain distance after being separated from the abutting protrusion 10 and abuts against an avoiding plane 11 on the left side of the directional block 8, the upper end of the pawl 5 swings upwards and is meshed with the tooth surface of the ratchet wheel 4, at the moment, the ratchet wheel 4 can be driven to rotate towards the anticlockwise direction, the directional block 8 swings back to the initial position, then the two pawls 5 are separated from the ratchet wheel 4, and the ratchet wheel 4 cannot be driven to rotate. Conversely, driving the directional block 8 to swing to the left can drive the ratchet 4 to rotate clockwise.

The above-described embodiments are preferred implementations of the present invention, and the present invention may be implemented in other ways without departing from the spirit of the present invention.

Claims (10)

1. A handle, characterized in that: the method comprises the following steps:

the ratchet wheel seat (1) is internally provided with a shaft hole (2) and an accommodating groove (3), and the accommodating groove (3) is communicated with the side surface of the shaft hole (2);

the ratchet wheel (4) is arranged in the shaft hole (2);

the two pawls (5) are positioned below the ratchet wheel (4), arranged in the accommodating groove (3) and arranged in a mutually crossed manner;

the supporting shaft (6) sequentially penetrates through the intersection parts of the two pawls (5), and the two pawls (5) can rotate circumferentially relative to the supporting shaft (6);

the two torsion springs (7) are sleeved on the supporting shaft (6), correspond to the two pawls (5) respectively and are used for providing circumferential rotating force for the corresponding pawls (5), and the directions of the circumferential rotating force received by the two pawls (5) are opposite;

and the directional block (8) is positioned below the supporting shaft (6), the top of the directional block is convexly provided with a reversing bulge (9), the two sides of the directional block are symmetrically provided with butting bulges (10), the two sides of the directional block are symmetrically provided with avoidance planes (11), and the top end of the directional block (8) can swing leftwards or rightwards relative to the tail end of the directional block.

2. A handle according to claim 1, wherein: the handle further comprises:

one end of the reversing shaft (12) is fixedly connected with the directional block (8), and the other end of the reversing shaft extends out of the accommodating groove (3);

and the end part of the reversing deflector rod (13) is fixedly connected with the other end of the reversing shaft (12) and is used for driving the reversing shaft (12) to rotate so as to drive the orientation block (8) to swing.

3. A handle according to claim 1, wherein: the handle further comprises: the limiting structure comprises a first limiting groove (14) which is formed in the outer side face of the lower section of the pawl (5), one end of the torsion spring (7) is arranged in the first limiting groove (14), and the other end of the torsion spring (7) is abutted to the side wall of the accommodating groove (3).

4. A handle according to claim 3, wherein: the handle further comprises: two second spacing grooves (15), it is relative back shaft (6) symmetry sets up and is located the top of back shaft (6), the other end of torsional spring (7) sets up in corresponding second spacing groove (15).

5. A handle according to claim 1, wherein: the handle further comprises:

the arc-shaped groove (16) is formed in the ratchet seat (1) and is positioned below the orientation block (8), and a gap is formed in the middle section of the arc-shaped groove;

the middle part of the elastic sheet (24) is provided with an arc-shaped bulge (25) which is arranged in the arc-shaped groove (16), and the arc-shaped bulge (25) penetrates through the notch and then extends into the accommodating groove (3);

and three arc concave surfaces (17), wherein one arc concave surface (17) is arranged on the lower end surface of the orientation block (8), the rest two arc concave surfaces (17) are respectively arranged at two corners of the lower end of the orientation block (8), and one arc concave surface (17) is matched and connected with the arc bulge.

6. A handle according to claim 1, wherein: the handle further comprises: and the cover plate (18) is used for covering the accommodating groove (3) and the shaft hole (2).

7. A handle according to claim 6, wherein: the handle further comprises: the step (19) is arranged on the periphery of the opening end of the accommodating groove (3) and the opening end of the shaft hole (2), and the periphery of the cover plate (18) is arranged in the step (19) and fixed on the ratchet seat (1) through a screw (20).

8. A handle according to claim 6, wherein: the handle further comprises:

the connector (21) is fixed at one end of the ratchet wheel (4) and extends out of the cover plate (18), and a hexagonal counter bore is formed in the end part of the connector (21);

and the connecting shaft (22) is fixed at the other end of the ratchet wheel (4).

9. A handle according to claim 1, wherein: the supporting shaft (6) is a bolt, and the bolt sequentially penetrates through the two pawls (5) and then is in threaded connection with the ratchet seat (1).

10. A handle according to claim 1, wherein: the handle further comprises: the end part of the handheld part (23) is fixedly connected with the end part of the ratchet wheel seat (1), and an included angle of 10-30 degrees is formed between the handheld part (23) and the ratchet wheel seat (1).

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