CN203887776U - Improved torque wrench structure - Google Patents

Abstract

An improved torque wrench structure is provided, when the torque wrench is adjusted to a required torque value, a rotating cover is pressed forward, a positioning column can be matched with an embedding groove of a positioning piece and blocked by a convex block, the rotating cover can not be rotated any more, the set torque value can be kept relatively, and the phenomenon that the force is excessive or insufficient when the torque wrench is operated is avoided.

Description

Improved Torque Wrench Structure

technical field

The utility model relates to an improved torque wrench structure, in particular, it can adjust the output torque value, so as to avoid excessive turning force, causing damage to the locking parts or the torque wrench, or insufficient force, resulting in locking The parts cannot be tightened, and the adjusted torque value can be fixed and maintained.

Background technique

The function of the torque wrench is to set the torque value. When the set torque value is exceeded, it will make a sound or produce idling, so that the user can clearly know that the preset torque value has been exceeded, and no longer continue to use force. It can relatively protect the locking part and the torque wrench from being damaged due to excessive force, and can surely tighten the locking part. Most of the general torque wrenches use a rotatable control part to drive the screw located inside the outer handle to rotate, and then use the slider that is screwed with the screw to move axially in the outer handle. When the slider is in a different position , that is, it can exert different degrees of compression on the spring, and then achieve the effect of adjusting the size of the torque value. However, since the common torque wrench sets the torque value to the required value, it cannot effectively fix the control part, so that the torque value will still be easily lost due to external forces such as vibration during operation or inadvertently turning the control part. In this way, because the torque value cannot be maintained, the user has no basis for the pulling operation, and the force is still applied excessively, resulting in damage to the locking part and the torque wrench, or insufficient force, resulting in locking Phenomena such as the fact that the parts cannot be tightened.

Contents of the invention

The main purpose of this utility model is to provide an improved torque wrench structure, which can fix the adjusted torque value to protect the locking part and the torque wrench from being damaged due to excessive force, and can surely turn the locking part. tight without affecting the normal use of the torque wrench.

In order to achieve the above purpose, the utility model provides an improved torque wrench structure, which includes: a wrench body, an outer handle, an adjustment mechanism, a positioning piece, a handle and a rotating cover, wherein the outer handle is Hollow, so that the wrench body can be penetrated from the front and combined, and the rear can be used for the adjustment mechanism to be inserted forward, and connected with the wrench body for transmission. The adjustment mechanism has a connecting rod group and a screw rod built in a tight sleeve. , and a spring is set between the connecting rod group and the actuating block of the screw rod, the connecting rod group is connected to the wrench body for transmission, and the actuating block is screwed with the screw rod. It is characterized in that: the screw rod extends behind There is a rotating part, the front part of the rotating part is provided with a step-shaped dodging ditch, and the rear part is provided with a transmission hole perpendicular to its axial direction. The locating piece is worn on the rotating part, and the perforations can be opposite to the dodging groove, so that the positioning pin can pass through the side wall and the perforation of the tight sleeve, and be accommodated in the dodging ditch, so that the positioning The part can be fixed at the back of the sealing sleeve to form a blocking effect, and the spacer ring on the side edge of the rear end face of the positioning part is provided with a plurality of protrusions, so that a slot can be formed between two spaced apart protrusions. The front of the rotating cover is protruded with a plurality of positioning columns and a hole is recessed, so that the rotating cover can be sleeved on the rotating part by using the hole, and a long sliding hole is arranged on the outer side of the peripheral edge perpendicular to its axial direction , so that the shaft rod can pass through the outer handle, the sliding hole and the transmission hole of the rotating part, so that the rotating cover can be pivoted between the rotating part and the outer handle.

The utility model has the following effects: (1) After setting the torque value at the required size, it can effectively fix the rotating cover so that it cannot be rotated any more. Due to external vibration or inadvertent rotation, it will cause the shortcoming that the torque value will change again; (2), its rotating cover can be fixed, so that the set torque value can be maintained, so it can be used when the user pulls the operation. If an accurate basis is provided, there will be relatively no phenomena such as applying too much force, causing damage to the locking part and the torque wrench, or insufficient force, causing the locking part to not be tightened.

Description of drawings

Fig. 1 is a three-dimensional assembled view of the utility model.

Fig. 2 is a three-dimensional exploded view of the utility model.

Fig. 3 is a transverse combined sectional view of the utility model.

Fig. 4 is a state diagram of the utility model driving the screw to rotate.

Fig. 5 is a state diagram of the utility model in which the fastening can no longer be rotated.

Detailed ways

Please first view it from Figure 1 with Figure 2 and Figure 3, which includes: a wrench body 10, an outer handle 20, an adjustment mechanism 30, a positioning piece 40, a handle 50 and a rotating cover 60, Wherein, one end of the wrench body 10 is a ratchet drive mechanism 11, which is used for socketing the locking member. The outer handle 20 is hollow, so that the wrench body 10 can be penetrated from the front, and then combined with a C-shaped buckle using a latch. On the outer handle 20, the rear can be used for the adjustment mechanism 30 to be inserted forward and connected to the wrench body 10 for transmission. The adjustment mechanism 30 has a connecting rod group 32 and a screw rod 34 embedded in a tight sleeve 31, and A spring 33 is sleeved between the connecting rod group 32 and the actuating block 35 of the screw rod 34. The connecting rod group 32 is connected to the wrench body 10 for transmission, and the actuating block 35 is screwed with the screw rod 34. When the When the screw rod 34 rotates, it can drive the actuating block 35 to follow the axial displacement, so as to utilize the change of the position of the actuating block 35 to apply different degrees of compression to the spring 33, thereby adjusting the torque value. A rotating part 341 is extended, and the front part of the rotating part 341 is provided with a stepped dodging groove 342, and the rear part is provided with two limit grooves 343, and a transmission hole 344 is provided perpendicular to its axial direction. The positioning part 40 It is two-stage hollow, and the hollow part is larger than the rotating part 341, and the side of the small-diameter step is provided with through holes 41. When the positioning part 40 is put on the rotating part 341, the through holes 41 Can be opposite to the dodging groove 342, so that the positioning pin can pass through the side wall and the perforation 41 of the sealing sleeve 31, and be accommodated in the dodging groove 342, so that the positioning member 40 can be fixed to the sealing sleeve 31 rear, to form a blocking effect, and this locator 40 rear end face side edge spacing ring is provided with a plurality of protrusions 42, so that two spaced apart protrusions 42 can be formed as a slot 43, handle 50 Sleeved at the rear of the outer handle 20, it can provide a grip when pulling, so as to facilitate the application of force. The front of the rotating cover 60 is provided with a plurality of positioning posts 601 and a hole 602, so that the rotating cover 60 can be used The hole 602 is sleeved on the rotating part 341, and a positioning hole 603 and a long-shaped sliding hole 604 are respectively provided on the outside of the peripheral edge of the rotating cover 60 perpendicular to its axial direction, and a positioning bead 61 is provided in the positioning hole 603. Put it in order with an elastic body 62, and then use a shaft 63 to pass through the outer handle 20, the sliding hole 604 and the transmission hole 344 of the rotating part 341, so that the rotating cover 60 can be pivoted on the rotating part 341 and the outer handle 20, and utilize the closure of the outer handle 20 to prevent the positioning bead 61 and the elastic body 62 from popping out, and the outer peripheral interval ring of the rear section of the rotating cover 60 is provided with a plurality of clamping blocks 64, the The spacer ring at the rear end of the handle 50 is provided with a plurality of locking slots 65 , and when the rotating cover 60 is pushed forward, the locking blocks 64 are correspondingly locked into the locking slots 65 .

By virtue of the above-mentioned structure and composition design, the operation of the utility model is explained as follows:

With the above-mentioned structure, when the torque value of the torque wrench is to be adjusted, the rotating cover 60 is pulled back, and at the same time, as shown in FIG. The grooves 65 are separated from each other, and the rotating cover 60 can take advantage of the dodge of the sliding hole 604 to move backward smoothly. At the same time, the positioning bead 61 will press upward against the elastic body 62, so that it can snap into the rear At this time, because the rotating cover 60 utilizes the shaft rod 63 to combine with the rotating part 341 and move, the screw rod 34 can be driven when the rotating cover 60 rotates, and the working The relative displacement of the moving block 35 is to use the change of the position of the moving block 35 to apply different degrees of compression to the spring 33, thereby achieving the effect of adjusting the torque value; and when the torque wrench is adjusted to the required torque value , and then press the rotating cover 60 forward, please see from Figure 5 at the same time, make the block 64 of the rotating cover 60 and the slot 65 at the rear end of the handle 50 engage with each other again, and let the positioning column 601 can fit in the slot 43 of the locating piece 40, and be blocked by the projection 42. At this time, because the sealing sleeve 31, the locating piece 40 and the rotating cover 60 form a mutually fixed state, and The rotary cover 60 can no longer be rotated, and the set torque value can be relatively maintained, so as to avoid excessive or insufficient force when the operation is pulled. In addition, when the rotary cover 60 is pressed in, its The positioning bead 61 will pass over the limiting groove 343 at the rear and snap into the limiting groove 343 at the front, so it can utilize the snap-in positioning to prevent the rotating cover 60 from arbitrarily shifting backwards, and can be rotated again.

By the structure of the above specific embodiment, the following benefits can be obtained:

(1) After setting the torque value to the required value, it can effectively fix the rotating cover 60 so that it can no longer be rotated. Compared with the pulling operation, there will be no external vibration or inadvertent rotation. , that is, the shortcoming that causes the torque value to change again; (2) the rotating cover 60 can be fixed, so that the set torque value can be maintained, so it can provide an accurate basis when the user pulls the operation, relatively There is no excessive application of force, causing damage to the locking part and the torque wrench, or insufficient force, causing the locking part to not be tightened.

To sum up, the utility model can effectively solve common structural defects, and can be understood and easily implemented by those of ordinary skill in the technical field, but the above is only a preferred embodiment of the present invention. When it cannot be used to limit the scope of implementation of the present invention; that is, all equivalent changes and modifications made according to the patent scope of the present application should still belong to the scope covered by the utility model patent.

Claims (3)

1. an improved torque spanner structure, it includes: a wrench body, one outer handle, one guiding mechanism, positioning piece, one handle and a rotatable cover, wherein, this outer handle is hollow form, make this wrench body penetrate combination by the place ahead, rear can be inserted forward for this guiding mechanism, with the transmission of joining of this wrench body, this guiding mechanism has been inserted connection rod set and screw rod in a closely sealed cover, start interblock in this connection rod set and screw rod is arranged with a spring again, the transmission of joining of this connection rod set and wrench body, this is made motion block and is screwed with screw rod, it is characterized in that: this screw rod rear is extended with a rotation section, this rotation section leading portion is provided with the ditch of dodging that is scalariform, back segment vertical its has axially provided a driving hole, this keeper is two rank hollow forms, on the side on path rank, provided perforation, this keeper is set on this rotation section, those perforation can be relative with this ditch of dodging, to utilize alignment pin to pass the Bian Biyu perforation of this closely sealed cover, and be placed in this ditch of dodging, and make this keeper can be consolidated in this closely sealed cover rear, to form a block effect, this keeper rear end face lateral margin spacer ring is provided with a plurality of projections again, to make between two projections of being separated by, can form a caulking groove, this rotatable cover the place ahead convexes with a plurality of locating dowels and is concaved with a hole, allow this rotatable cover can utilize this hole and be set on this rotation section, periphery outside vertical its is axially arranged with the slip hole of a microscler shape, allow this axostylus axostyle can pass this outer handle, the driving hole of slip hole and rotation section, and make this rotatable cover energy pivot be placed between this rotation section and outer handle.

2. improved torque spanner structure as claimed in claim 1, is characterized in that: wherein, be equipped with two road stopper slots on the back segment of this rotation section, this rotatable cover is provided with a locating hole, allows this positioning bead and elasticity physical efficiency sequentially be placed in this locating hole.

3. improved torque spanner structure as claimed in claim 1, it is characterized in that: wherein, this rotatable cover back segment outer peripheral edges spacer ring is provided with a plurality of fixture blocks, and this handle rear end periphery spacer ring is provided with a plurality of draw-in grooves, when this rotatable cover is pressed into forward, this fixture block correspondence is snapped into this draw-in groove.