CN210081583U - Torque tool - Google Patents

Abstract

The utility model discloses a torque tool, it has simpler structure and can transmit great moment of torsion. The torque tool comprises a handle, a base, a first gear ring, a second gear ring output piece and an elastic piece. The base is arranged on the handle and provided with a through cavity; the first gear ring is arranged in the cavity and connected with the cavity in a torque-transferring manner, the end face of the first gear ring is provided with a meshing area, the meshing area comprises a plurality of teeth, and the teeth comprise first wedge surfaces and first side faces; the second gear ring and the first gear ring are coaxially arranged, the end face of the second gear ring is provided with a meshing area, the meshing area comprises a plurality of teeth, the teeth comprise a second wedge surface and a second side surface, and the teeth of the second gear ring can enter and exit gaps between the teeth of the first gear ring when the second gear ring and the first gear ring axially move relatively; the output part is connected with the second gear ring in a torque-transmitting manner and comprises a torque-transmitting interface; the elastic member acts on the first ring gear or the second ring gear to make the two have a close tendency.

Description

Torque tool

Technical Field

The utility model belongs to the technical field of hardware and tools, especially, relate to a torque tool.

Background

In the life production, often need to carry out the operation of fastening or loosening to fasteners such as screw nut, can need instruments such as screwdriver and spanner, wherein ratchet spanner can one-way application moment of torsion, need not to separate with the work piece during the return stroke that resets, and the operation is more convenient. The ratchet teeth of the common ratchet wrench and the ratchet teeth of the clamping piece transmit torque only by the meshing of a few ratchet teeth, and the transmittable torque is small. And the clamping piece has small volume and complex shape, and is difficult to manufacture and assemble.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a torque tool, it has simpler structure and can transmit great moment of torsion.

In a first aspect, a torque tool is provided for outputting torque, the torque tool including a handle, a base, a first ring gear, a second ring gear output, and a resilient member. The handle can be held; the base is arranged on the handle and provided with a through cavity; the first gear ring is arranged in the cavity and connected with the cavity in a torque-transferring manner, the end face of the first gear ring is provided with a meshing area, the meshing area comprises a plurality of teeth, and the teeth comprise first wedge surfaces and first side faces; the second gear ring and the first gear ring are coaxially arranged, the end face of the second gear ring is provided with a meshing area, the meshing area comprises a plurality of teeth, the teeth comprise a second wedge surface and a second side surface, and the teeth of the second gear ring can enter and exit gaps between the teeth of the first gear ring when the second gear ring and the first gear ring axially move relatively; the output part is connected with the second gear ring in a torque-transmitting manner and comprises a torque-transmitting interface; the elastic piece acts on the first gear ring or the second gear ring to enable the first gear ring and the second gear ring to have a close tendency; when the second gear ring and the first gear ring have relative rotation tendency, if the first wedge surface of the first gear ring and the second wedge surface of the second gear ring interact, the second gear ring moves relative to the first gear ring along the axial direction; if the first side of the first gear ring interacts with the second side of the second gear ring, the first gear ring drives the second gear ring in rotation.

In a first possible implementation, the teeth of the first ring gear extend in a direction having a predetermined angle with respect to the cross section of the first ring gear, so that the plurality of teeth form a tapered arrangement, and the plurality of teeth of the second ring gear have a corresponding arrangement.

With reference to the above possible implementations, in a second possible implementation, the first ring gear is fixed to the chamber of the base, and the elastic member acts on the second ring gear.

In combination with the above possible implementations, in a third possible implementation, the output member is fixed to the second ring gear.

In combination with the above possible implementation manners, in a fourth possible implementation manner, the base is movably connected with the handle, and an angle between the handle and the cross section of the base can be adjusted.

In combination with the above possible implementation manners, in a fifth possible implementation manner, the handle and the base are connected through a pin shaft, and a rotational degree of freedom within a certain angle range is provided between the handle and the base.

With reference to the foregoing possible implementation manners, in a sixth possible implementation manner, an elastic pin is disposed in the handle, the elastic pin can move along a length direction of the handle, a protrusion is disposed on the base, and the elastic pin can be transferred from one side of the protrusion on the base to the other side when the handle rotates relative to the base.

With reference to the foregoing possible implementation manners, in a seventh possible implementation manner, the elastic member is a compression spring.

In combination with the above possible implementations, in an eighth possible implementation, the interface of the output element is a socket or a quad interface.

In combination with the above possible implementation manners, in a ninth possible implementation manner, both ends of the handle are provided with the bases.

The utility model provides a torque tool through two ring gear transmission moments of torsion, can transmit bigger moment of torsion.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a torque tool according to an embodiment of the present invention;

FIG. 2 is an exploded assembly view of the torque tool of FIG. 1;

FIG. 3 is a schematic structural view of the first ring gear and the second ring gear of FIG. 2;

FIG. 4 is a schematic view of the connection of the handle to the base;

fig. 5 is a schematic structural view of a torque tool according to another embodiment of the present invention;

fig. 6 is a schematic structural diagram of a torque tool according to another embodiment of the present invention.

Wherein:

10-handle, 11-spring, 12-pin;

20-base, 21-chamber;

30-first ring gear, 31-tooth, 311-first wedge surface, 312-first flank, 32-tooth, 322-first flank;

40-second ring gear, 41-tooth, 411-second wedge surface, 412-second side surface;

50-output piece, 60-elastic piece, 70-retainer ring, 80-pin shaft and 90-bulge.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. The present invention is in no way limited to any specific structure or arrangement set forth below, but rather covers any modification, replacement or improvement of parts, features and connections without departing from the spirit of the invention.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to provide a thorough understanding of embodiments of the invention.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a torque tool according to an embodiment of the present invention, fig. 2 is an exploded assembly diagram of the torque tool in fig. 1, fig. 3 is a schematic structural diagram of a first ring gear and a second ring gear in fig. 2, and fig. 4 is a schematic structural diagram of a handle and a base.

In this embodiment, the torque tool is used for outputting torque, and includes a handle 10, a base 20, a first gear ring 30, a second gear ring 40, an output member 50, an elastic member 60, a retainer ring 70, a pin 80, and a protrusion 90.

The base 20 is arranged at the tail end of the handle 10, the through cavity 21 is arranged on the base 20, the cavity 21 is used for mounting parts such as the gear ring and the output piece 50, and the retainer ring 70 limits structures such as the first gear ring 30, the second gear ring 40, the output piece 50 and the elastic piece 60 in the cavity 21. The output member 50 can be clamped with a fastener such as a nut or a screw, and when the handle 10 is rotated in the forward direction, the base 20 together with the first gear ring 30 and the second gear ring 40 drives the output member 50 to rotate, so that torque is applied to the nut or the screw; when the handle 10 is rotated in the reverse direction, torque cannot be transmitted between the output member 50, the first ring gear 30 and the second ring gear 40, and the handle 10 can be returned against a small resistance to facilitate the next forward rotation.

The handle 10 is used for holding, the base 20 and the handle 10 are movably connected, and the angle between the cross sections of the handle 10 and the base 20 can be adjusted. Specifically, the handle 10 and the base 20 are connected by a pin 80 with a certain range of rotational freedom therebetween. For example, the handle 10 may be pivoted about the pin 80 by 15 degrees to tilt up or down.

The handle 10 is provided with a resilient pin, which in this embodiment comprises a spring 11 and a pin 12, the pin 12 being movable along the length of the handle 10. The portion of the base 20 facing the pin 12 is provided with a protrusion 20, the pin 12 being able to be transferred from one side of the protrusion 90 to the other when the handle 10 is rotated relative to the base 20.

The first ring gear 30 is fixed in the chamber 21 of the base 20 and is therefore able to rotate with the base 20 and transmit torque. The end face of the first ring gear 30 is provided with a meshing zone with a ring of teeth arranged for the transmission of force with the teeth of the second ring gear 40. The teeth of the first ring gear 30 have a certain width, and the extending direction of the teeth and the cross section of the first ring gear 30 form a certain included angle, and a plurality of teeth form an arrangement of conical surfaces. That is, the end surface of the first ring gear 30 on which the teeth are provided is not a flat surface but a tapered surface having a constant taper, and the teeth are provided on the tapered surface. The plurality of teeth of the second ring gear 40 have an arrangement corresponding thereto so as to achieve sufficient contact.

The specific structure of the first ring gear 30 will be described by taking the teeth 31 as an example. The tooth 31 includes a first wedge surface 311, a first side surface 312, and a top surface. The first wedge surface 311 is angled relative to a plane passing through the gear ring axis so that a force applied to the second gear ring 40 will have a component in the axial direction to drive the second gear ring 40 to move in the axial direction. The first side 312 is substantially parallel to the axis of the ring gear, so that its force on the second ring gear 40 is tangential to the ring gear circumference, driving the second ring gear 40 in rotation.

The second gear ring 40 is arranged coaxially with the first gear ring 30, the end face of the second gear ring 40 is provided with a meshing area, the meshing area comprises a plurality of teeth, the teeth comprise a second wedge surface and a second side surface, and the teeth of the second gear ring 40 can enter and exit from gaps between the teeth of the first gear ring 30 when the second gear ring 40 and the first gear ring 30 move relatively in the axial direction.

The interaction between the two toothed rings is illustrated by way of example with the teeth 31 and the teeth 41. When the second gear ring 40 and the first gear ring 30 have a relative rotation tendency, if the first wedge surface 311 of the first gear ring 30 interacts with the second wedge surface 411 of the second gear ring 40, an axial interaction force is generated between the two, so that the second gear ring 40 is caused to move axially relative to the first gear ring 30; if the first side 322 of the teeth 32 of the first ring gear 30 interacts with the second side 412 of the second ring gear 40, the first ring gear 30 drives the second ring gear 40 in rotation.

The output member 50 is connected with the second ring gear 40 in a torque-transmitting manner, the second ring gear 40 and the output member 50 are fixedly connected in the embodiment, and the second ring gear 40 and the output member 50 can move relatively in the axial direction in some alternative embodiments. The output member 50 includes a torque-transmitting interface, i.e., a structure capable of limiting rotation of the workpiece, and in this embodiment, the interface is a socket head structure, but in other alternative embodiments, the interface may also be a hexagon head or a square head structure.

In this embodiment, the elastic member 60 is a compression spring, the elastic member 60 acts on the second ring gear 40 to make it abut against the first ring gear 30 when not being subjected to an external axial force, and the second ring gear 40 moves in the axial direction against the pressure of the elastic member 60 when being subjected to the axial force. In some alternative embodiments, the first ring gear 30 may be arranged to be axially displaceable while being in torque-transmitting connection with the base 20, while the second ring gear 40 is arranged to be non-displaceable in axial direction, in which case the elastic member 60 may be arranged to act on the first ring gear 30 to bring the first ring gear 30 into abutment with the second ring gear 40.

Referring to fig. 5 and 6, fig. 5 is a schematic structural diagram of a torque tool according to another embodiment of the present invention, and fig. 6 is a schematic structural diagram of a torque tool according to another embodiment of the present invention. In fig. 5, the two ends of the handle are both provided with structures such as a base and a gear ring, and the two ends of the handle can be used for applying torque. In fig. 6, the torque interface of the output member of the torque tool is square, and can be connected with a tool such as a socket head socket or a hexagon socket head socket.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A torque tool for outputting torque, comprising:

a handle for holding;

the base is arranged on the handle and provided with a through cavity;

the first gear ring is arranged in the cavity and connected with the cavity in a torque-transferring manner, a meshing area is arranged on the end face of the first gear ring and comprises a plurality of teeth, and the teeth comprise first wedge surfaces and first side faces;

the second gear ring is coaxial with the first gear ring, a meshing area is arranged on the end face of the second gear ring and comprises a plurality of teeth, the teeth comprise a second wedge surface and a second side surface, and the teeth of the second gear ring can enter and exit gaps between the teeth of the first gear ring when the second gear ring and the first gear ring move relatively in the axial direction;

an output element, which is connected together with the second ring gear in a torque-transmitting manner and comprises a torque-transmitting interface; and

the elastic piece acts on the first gear ring or the second gear ring to enable the first gear ring and the second gear ring to have a close tendency;

when the second gear ring and the first gear ring have relative rotation tendency, if a first wedge surface of the first gear ring and a second wedge surface of the second gear ring interact, the second gear ring moves relative to the first gear ring along the axial direction; and if the first side surface of the first gear ring interacts with the second side surface of the second gear ring, the first gear ring drives the second gear ring to rotate.

2. The torque tool of claim 1, wherein the teeth of the first ring gear extend at a predetermined angle to a cross-section of the first ring gear such that the plurality of teeth form a tapered array and the plurality of teeth of the second ring gear have a corresponding array.

3. The torque tool of claim 1, wherein the first gear ring is fixed to the chamber of the base and the resilient member acts on the second gear ring.

4. The torque tool of claim 1, wherein the output member is fixed to the second ring gear.

5. The torque tool of claim 1, wherein the base is movably connected to the handle, and wherein an angle between the handle and a cross-section of the base is adjustable.

6. The torque tool of claim 5, wherein the handle is pinned to the base with a degree of rotational freedom therebetween over a range of angles.

7. The torque tool of claim 6, wherein the handle includes a resilient pin disposed therein, the resilient pin being movable along a length of the handle, and wherein the base includes a protrusion, the resilient pin being transferable from one side of the protrusion to another side of the protrusion on the base when the handle is rotated relative to the base.

8. The torque tool according to any one of claims 1 to 7, wherein the resilient member is a compression spring.

9. The torque tool of any one of claims 1 to 7, wherein the interface of the output member is a socket or a quad-socket interface.

10. The torque tool according to any one of claims 1 to 7, wherein the handle is provided with a base at both ends.

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