CN214686271U - Preset torque wrench convenient for force application - Google Patents

Abstract

The utility model relates to a hand tool technical field, concretely relates to preset torque wrench convenient to application of force, which comprises a handle, the working head, the connector, interior pole, the power application pole, a spring, the apical ring, the thimble, gyro wheel and scale ring, connector and working head fixed connection, the anterior fixed connection of working head and interior pole, the connector is used for connecting by the fastener, handle cavity, interior pole stretches into the handle, the handle rotates with interior pole to be connected, the gyro wheel rotates with interior pole afterbody to be connected, apical ring and spring all embolia in the handle cavity, install the thimble on the apical ring, thimble and gyro wheel butt, handle afterbody processing has the internal thread, power application pole processing and interior screw-thread fit's external screw thread portion, the scale ring is installed on the power application pole, the spring is located between power application pole and the apical ring. The utility model discloses a substantive effect is: the preset torque is set through the rear force application rod, and the handle are fixed, so that the locking nut is omitted, the nut can be directly screwed after the torque is set, and the use is convenient.

Description

Preset torque wrench convenient for force application

Technical Field

The utility model relates to a hand tool technical field, concretely relates to preset torque wrench convenient to application of force.

Background

The torque is the product of force and distance, and the torque applied needs to be controlled when fastening threaded fasteners such as screws, bolts, nuts and the like so as to ensure that the threads are fastened without damaging the threads due to overlarge torque and ensure that the threads are sufficiently fastened, so that the torque wrench is used for operating. The preset torque wrench has a preset torque value and an audible device. When the torque-limiting device is used, a required upper limit of a torque value is set, when the applied torque reaches a set value, the wrench can make a sound of clamping a tower or bend a certain angle at the connection part of the wrench, and the obvious hand feeling vibration is accompanied, so that the situation that the torque-limiting device is fastened and no force is applied is provided, and the completion of work is prompted. However, the torque of the existing torque wrench is set by rotating the handle, and after the torque is set, the lock nut needs to be screwed down again, so that the problem that the handle rotates when the nut is screwed down to apply force and the use is inconvenient is solved.

For example, chinese patent CN2445865Y describes a manual preset torque wrench. Consists of a wrench head, a swing rod, a stress application sleeve, a torque transmission mechanism in the stress application sleeve, a signaling mechanism and a torque presetting mechanism. The torque transmission mechanism is structurally characterized in that the tail end of a swing rod is hinged with the front end of a knocking lever through a connecting pin, the knocking lever penetrates through a sliding block in a stress application sleeve and is hinged with the sliding block, the rear end of the knocking lever is hinged with a connecting rod, the other end of the connecting rod is hinged with an eccentric sliding block, and the other end of the eccentric sliding block is connected with a torque presetting mechanism. Above-mentioned technical scheme still can not solve the handle and need possess the application of force and screw up and awkward problem after locking with the help of lock nut.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: the current torque wrench is inconvenient to use. A preset torque wrench convenient for applying force is provided.

In order to solve the technical problem, the utility model discloses the technical scheme who takes does: the utility model provides a preset torque wrench convenient to application of force, includes handle, working head, connector, interior pole, application of force pole, spring, apical ring, thimble, gyro wheel and scale ring, connector and working head fixed connection, working head and the anterior fixed connection of interior pole, the connector is used for connecting by the fastener, handle cavity, interior pole stretches into the handle, the handle rotates with interior pole to be connected, the gyro wheel rotates with interior pole afterbody to be connected, apical ring and spring all embolia in the handle cavity, install the thimble on the apical ring, thimble and gyro wheel butt, the processing of handle afterbody has the internal thread, application of force pole processing with interior screw-thread fit's external screw thread portion, the scale ring is installed on the application of force pole, the spring is located between application of force pole and the apical ring.

As preferred, still include the reading ring, the scale ring rotates to cup joint and is in on the stress application pole, scale ring outer wall processing is fluted, install on hand with the lug of recess joint, reading ring fixed mounting is at the handle tail end, processing has reading line and reading groove on the reading ring, the reading line is used for instructing the scale on the scale ring, the reading groove is used for exposing the reading on the scale ring.

Preferably, the top ring is provided with two ejector pins, and the two ejector pins are abutted to the roller. The tail of the stress application rod is fixedly connected with a hand wheel.

Preferably, the handle is further provided with a grab handle, and the grab handle is fixedly connected with the rear part of the handle.

Preferably, the handle is rotatably connected with the inner rod through a first pin; the second pin is used for connecting the inner rod and the working head.

Preferably, the connector is fixedly connected with the working head through a connecting pin; the front end of the working head is fixedly provided with a plug.

The utility model discloses a substantive effect is: the torque is preset through the rear force applying rod, the rear part of the handle or the handle is fixed, so that a locking nut is omitted, the nut can be directly screwed after the torque is set, and the use is convenient.

Drawings

FIG. 1 is a schematic view of a torque wrench according to an embodiment.

FIG. 2 is a cross-sectional view of a torque wrench according to an embodiment.

FIG. 3 is a schematic top view of a torque wrench according to an embodiment.

FIG. 4 is a schematic view of an embodiment of a torque wrench roller installation.

FIG. 5 is a schematic diagram of a torque wrench according to an embodiment to achieve a predetermined torque roller position.

Wherein: 1. the hand wheel comprises a hand wheel body 2, a scale ring 3, a grab handle 4, a handle 5, a working head 6, a first pin 7, a second pin 8, a connector 9, a connecting pin 10, a stress application rod 11, a reading ring 12, a spring 13, a top ring 14, a roller 15, an inner rod 16, a plug 17 and a thimble.

Detailed Description

The following provides a more detailed description of the present invention, with reference to the accompanying drawings.

The first embodiment is as follows:

a preset torque wrench convenient for force application refers to the attached figures 1, 2 and 3, and comprises a handle 4, a working head 5, a connector 8 and an inner rod 15, stress application rod 10, spring 12, the apical ring 13, the thimble 17, gyro wheel 14 and scale ring 2, connector 8 and working head 5 fixed connection, working head 5 and the anterior fixed connection of interior pole 15, connector 8 is used for connecting by the fastener, handle 4 is hollow, interior pole 15 stretches into handle 4, handle 4 rotates with interior pole 15 to be connected, gyro wheel 14 rotates with interior pole 15 afterbody to be connected, apical ring 13 and spring 12 all embolia in handle 4 cavity, install thimble 17 on the apical ring 13, thimble 17 and gyro wheel 14 butt, handle 4 afterbody processing has the internal thread, stress application rod 10 processing and internal thread complex external screw thread portion, scale ring 2 installs on stress application rod 10, spring 12 is located between stress application rod 10 and apical ring 13. Scale ring 2 rotates to cup joint on power rod 10, and 2 outer walls of scale ring are processed flutedly, install the lug with the recess joint on the handle 4, and the lug can avoid scale ring 2 to rotate along with power rod 10, and 11 fixed mounting of reading ring have reading line and reading groove at 4 tail ends of handle, and the processing has reading line and reading groove on the reading ring 11, and the reading line is used for instructing the scale on the scale ring 2, and the reading groove is used for exposing the reading on the scale ring 2. Referring to fig. 4, two ejector pins 17 are mounted on the top ring 13, and both ejector pins 17 are abutted against the roller 14. The tail part of the stress application rod 10 is fixedly connected with a hand wheel 1. The grab handle 3 is fixedly connected with the rear part of the handle 4. The handle 4 is pivotally connected to the inner lever 15 by means of a first pin 6. The second pin 7 is used to connect the inner rod 15 and the working head 5. The connector 8 is fixedly connected with the working head 5 through a connecting pin 9. The front end of the working head 5 is fixedly provided with a plug 16.

The working mode of the embodiment is as follows: the force applying rod 10 is rotated to a required position according to the scale, the force applying rod 10 extrudes the spring 12, the spring 12 contracts to generate pressing force and acts on the top ring 13, the top ring 13 acts on the roller 14 through the ejector pin 17, then the connector 8 is connected with a screwed part, force is applied through the handle 4, when the reaction force generated by the screwed part reaches a preset value, the inner rod 15 drives the roller 14 to rotate by overcoming the pressing force of the ejector pin 17, the inner rod 15 can impact the inner wall of the handle 4 when rotating, sound and vibration are generated, and the preset torque is prompted to be reached. The inner rod 15 hits the inner wall of the handle 4, see fig. 5. After the force application is stopped, the parts are restored to the positions under the action of the spring 12. To protect the spring 12, the lever 10 is unscrewed to not compress the spring 12, and then the torque wrench is received.

The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the claims.

Claims (5)

1. A preset torque wrench convenient for force application, which is characterized in that,

comprises a handle, a working head, a connector, an inner rod, a force applying rod, a spring, a top ring, a thimble, a roller and a scale ring,

the utility model discloses a handle, including connector and working head, working head and interior anterior fixed connection of pole, the connector is used for connecting by the fastener, handle cavity, interior pole stretches into the handle, the handle rotates with interior pole to be connected, the gyro wheel rotates with interior pole afterbody to be connected, apical ring and spring all embolia in the handle cavity, install the thimble on the apical ring, thimble and gyro wheel butt, the processing of handle afterbody has the internal thread, the processing of atress pole with interior screw-thread fit's external screw thread portion, the scale ring is installed on the atress pole, the spring is located between atress pole and the apical ring.

2. The pre-set torque wrench facilitating force application according to claim 1,

still include the reading ring, the scale ring rotates to cup joint on the application of force pole, scale ring outer wall processing is fluted, on hand install with the lug of recess joint, reading ring fixed mounting is at handle tail end, processing has reading line and reading groove on the reading ring, the reading line is used for instructing the scale on the scale ring, the reading groove is used for exposing the reading on the scale ring.

3. A pre-set torque wrench facilitating force application according to claim 1 or 2,

two ejector pins are mounted on the top ring and are abutted to the roller.

4. A pre-set torque wrench facilitating force application according to claim 1 or 2,

the tail of the stress application rod is fixedly connected with a hand wheel.

5. A pre-set torque wrench facilitating force application according to claim 1 or 2,

the handle is fixedly connected with the rear part of the handle.

Images