TWM454897U - Two-stage wrench - Google Patents

Description

Two-stage wrench

This creation belongs to the technical field of hand tools, especially a two-stage wrench with a small radius of gyration.

The traditional wrench has a grip rod, and the grip rod has a certain angle and length, and the end portion thereof cannot be bent at will, and is easily restricted by the narrow space, which affects the convenience of the wrench operation.

Although the patents of Taiwan No. 450185, No. 569860, No. I241940, and No. I242483 respectively disclose a tool head that rotates relative to the grip.

However, the grip has only an angle adjustment function, and it is still impossible to make a circular motion with a large radius in a small space. It can only rely on the ratchet structure to continuously operate back and forth, which not only wastes time but also causes troubles in use.

In order to overcome the problem that the wrench is not conducive to large-scale rotation in a small space, the creator has proposed a solution: a grip and a drive rod are coupled into a two-stage wrench through a pivoting positioning group, and the radius of gyration can be performed in a narrow space. Small circular motion, applied to the United States for patents Nos. 7,246,545 and 7,302,876.

This creator is not complacent and is eager to keep improving. God finally succeeded in developing a new pivoting positioning group that can be installed in a two-stage wrench.

The main purpose of this creation is to develop a new pivoting positioning group and to apply it to a two-stage wrench.

Due to the above object, the two-stage wrench of the present invention comprises: a driving rod, the end of the driving rod is cut into a clamping groove to form two lugs separated from each other, and each lug surface has a card slot, and the central portion of the card slot Forming a small diameter and straight through the clamping hole of the clamping slot, the inner surface of one of the two embedded pivot holes forms a latching portion; and a gripping rod, the end of the gripping rod forms a pivoting portion between the two lugs The ear has a toothed hole, and a toothed portion is formed on the inner surface of the toothed hole; a pivoting positioning group includes: a knob, the knob has a convex ring placed in the slot of the lug, and is formed along the diameter of the convex ring a sliding portion, the convex ring is divided into two semi-circular grooves around the space; a limiting member, the limiting member is inserted into the slot of the other lug and combined with the knob; and a card gear, the card gear is interposed between the knob and the limit Between the bit members, the opposite knob portions of the knob portion are raised, and each of the linking portions can enter and exit the corresponding semicircular groove.

When the sliding portion moves to a non-moving position with the knob, the linking portion touches the sliding portion and leaves the semicircular groove, and the engaging card gear simultaneously engages the engaging portion of the engaging grip and the lug.

When the sliding part moves to an active position with the knob, the linkage The portion is separated from the sliding portion to enter the semicircular groove, so that the card gear is engaged with the engaging portion of the grip.

In this way, the driving rod and the grip rod are freely rotated, and the angle between the two is fixed at any time, or a circular motion with a small radius of gyration is performed.

Hereinafter, the purpose, structure and characteristics of the related embodiments will be described in detail based on the drawings, and it is believed that the techniques, means and functions adopted by the present invention can be obtained from an in-depth and specific understanding.

10‧‧‧ drive rod

11‧‧‧ fittings

12‧‧ ‧ dial

20‧‧‧ Grip

25‧‧‧ head

26‧‧‧ 枢 ear

27‧‧‧ card hole

28‧‧‧Knife

30‧‧‧ pivot positioning group

31‧‧‧ card gear

32‧‧‧Limited parts

320‧‧‧Bump

33‧‧‧ Spring

34‧‧‧Bolts

35‧‧‧nano

36‧‧‧Bevel

361‧‧‧Limited slot

38‧‧‧ knob

40‧‧‧Clamp slot

41‧‧‧Upper lugs

42‧‧‧Lower lugs

43‧‧‧Embedded holes

44‧‧‧ card slot

45‧‧‧Knife

50‧‧‧ linkage department

51‧‧‧Vertical

52‧‧‧ obstacles

53‧‧‧ top surface

60‧‧‧ semicircular trough

61‧‧‧Combination Department

62‧‧‧Sliding section

63‧‧‧Uplift

64‧‧‧Front slope

65‧‧‧Back slope

66‧‧‧ convex ring

67‧‧‧flat surface

Figure 1 is a combined perspective view of a preferred embodiment of the inventive wrench.

Fig. 2 is an exploded perspective view of the wrench of Fig. 1.

Figure 3 is a side view of the card gear.

Figures 4 and 8 are cross-sectional views showing the action of the pivoting position group.

Figure 5 is a side view of the knob.

Figures 6 and 7 are schematic diagrams of the continuous operation of the knob with the card gear.

Fig. 9 is a view showing the state of use of the wrench of Fig. 1.

Referring to FIG. 1 , the specific structure of the two-stage wrench is illustrated. The short drive rod 10 and the long grip 20 are still coupled together through the pivot positioning group 30 to hold the grip 20 and drive the drive rod 10 . A circular motion with a small radius of gyration is performed, or the angle between the drive rod 10 and the grip 20 is fixed by the pivot positioning group 30.

The drive rod 10 has a ratchet-shaped sleeve 11 which can be placed outside the nut or the screw head by a dial mounted on the drive rod 10. 12 The control sleeve 11 is unidirectionally idling, and the reverse direction moves with the drive rod 10, and the nut or the screw head is driven to perform the loosening or locking operation. The driving rod 10 is cut away from the end of the gripping rod 20 by a clamping groove 40 to form an upper lug 41 and a lower lug 42 spaced apart from each other.

As shown in FIG. 2, the surface of the upper lug 41 is recessed into a circular slot 44, and a pivot hole 43 having a small diameter and straight through the slot 40 is formed in the center of the bottom surface of the slot 44. The pivot hole 43 has a smooth inner hole. Circumferential surface.

The lower lug 42 is provided with a shape-symmetrical and oppositely-shaped armature hole 43 and a latching groove 44. Further, the inner peripheral surface of the pivot hole 43 is provided with a plurality of continuous teeth to form an uneven toothed portion 45.

Returning to Fig. 1, the outer end of the grip 20 is formed with a head 25 which is contoured like a split jaw and can be replaced by one of a ratchet sleeve or a plum blossom. The inner end of the grip 20 forms a pivot 26 that can penetrate the slot 40 of the drive rod 10 between the upper and lower lugs 41, 42.

In Fig. 2, the pivot 26 is contoured to the ring and has a toothed hole 27 having an aperture that coincides with the keyhole 43 of the lower lug 42. A plurality of continuous teeth are also looped on the inner circumferential surface of the toothed hole 27 to form an uneven toothed portion 28 having the same number of teeth as the toothed portion 45 of the lower lug 42.

Then, the components of the pivoting positioning group 30 are seen, and a latching member 32 is used to engage a knob 38 to mount a latching gear 31 and a spring 33 in the aligned pivot hole 43 and the latching hole 27 to drive the lever. 10 is connected in series with the grip 20.

It is not difficult to understand from Figures 3 and 4 that a bolt 34 passes through the ring. The shape limiting member 32 is locked with the knob 38, and the support spring 33 is compressed by the card gear 31. The limiting member 32 has a T-shaped longitudinal section and faces the knob 38 to protrude into the protrusion 320 of the spring 33, thereby preventing the spring 33 from being forced to fall.

The card gear 31 is designed as a ring body, and the outer circumferential surface thereof forms a plurality of continuous teeth to engage the engaging tooth portion 28, and the card gear 31 is restricted from rotating relative to the pivot 26, but the card gear 31 can be guided to be pushed by the spring 33. Lower contact knob 38 bottom. A ring surface 35 is formed on the top of the card gear 31. The ring surface 35 is raised by the opposite interlocking portion 50, and the top surface 53 of the interlocking portion 50 abuts against the knob 38.

The side of the interlocking portion 50 is a vertical surface 51, and the difference from the top surface 53 to the annular surface 35 is the largest. The interlocking portion 50 is a beveled surface 36 on the other side. The lowermost end of the inclined surface 36 engages the toroidal surface 35 and extends along the curvature to the vertical surface 51 to the highest end to be connected to a barrier portion 52. The interlocking portion 50 forms a limiting groove 361 between the top surface 53 and the obstacle portion 52. The height of the three is the highest with the top surface 53, the second portion of the obstacle portion 52, and the bottom of the limiting groove 361.

2 and 4, a portion of the knob 38 facing the upper lug 41 is formed with a convex ring 66. The inner circumferential surface of the convex ring 66 is diametrically shaped with the two sliding portions 62 and a joint portion 61, and the convex ring 66 is formed. The space is divided into two semi-circular grooves 60, and the top surface 53 of the interlocking portion 50 is allowed to abut against the corresponding semi-circular groove 60. The joint portion 61 is interposed between the two sliding portions 62, and has a length exceeding the sliding portion 62 and the convex ring 66, is inserted into the center of the card gear 31, and is locked with the bolt 34, and also penetrates the spring 33 to prevent it from falling over.

As shown in Figures 5 and 6, the sliding portion 62 is blocked by the linkage The vertical surface 51 on the side of the portion 50 is also unable to climb the inclined surface 36 of the other interlocking portion 50, and can only stay at a movable position, so that the uneven end surface contacts the ring surface 35 of the card gear 31. The portion of the sliding portion 62 that touches the annulus 35 is a raised surface 63. The raised surface 63 abuts a front slope 64 complementary to the inclined surface 36, and forms a rear slope surface 65 opposite to the slope. The rear slope surface 65 is connected. A flat surface 67 that maintains an appropriate distance from the annulus 35.

When the knob 38 rotates in the direction of the arrow in FIG. 6, the front slope 64 of the sliding portion 62 will follow the slope 36 from the lowest end to the highest end, and the raised surface 63 will pass over the obstacle portion 52 and fall into the limit groove 361. The rear slope surface 65 and the flat surface 67 are engaged with the surface of the obstacle portion 52, thereby pushing the card gear 31 to move in the direction of the arrow in the seventh figure.

Referring again to Fig. 8, each of the latching portions 28, 45 are aligned with each other to cause a guiding action to move the latching gear 31 from the pivoting lug 26 to the lower lug 42 to form a stationary position. At this moment, the angle between the driving rod 10 and the grip 20 is fixed.

As long as the knob 38 is rotated in the opposite direction to the arrow of FIG. 6, the rear slope 65 of the sliding portion 62 can be passed over the obstacle portion 52 from the highest end of the inclined surface 36 to the lowest end until the raised surface 63 re-contacts the torus 50. Go back to the event location again.

When the card gear 31 is unconstrained, it is pushed toward the knob 38 by the spring 33 as shown in Fig. 4, and is separated from the lower lug 42 to release the fixed angle. At this moment, the driving rod 10 and the grip 20 can be freely rotated, and the angle between them can be arbitrarily adjusted as in FIG. 9, or a circular motion with a small radius of gyration can be performed.

The above embodiments are merely illustrative of the present creation, and are not intended to limit the creation. Work. Various changes, modifications, and applications derived from the above-described embodiments of the skilled artisan are within the scope of the present invention.

35‧‧‧nano

36‧‧‧Bevel

361‧‧‧Limited slot

38‧‧‧ knob

50‧‧‧ linkage department

51‧‧‧Vertical

52‧‧‧ obstacles

53‧‧‧ top surface

61‧‧‧Combination Department

62‧‧‧Sliding section

63‧‧‧Uplift

64‧‧‧Front slope

65‧‧‧Back slope

66‧‧‧ convex ring

67‧‧‧flat surface

Claims (11)

A two-stage wrench comprises: a driving rod, the end of the driving rod is cut into a clamping groove to form two lugs separated from each other, each lug surface has a card slot, and a central portion of the card slot is formed with a small diameter and a straight through clip a latching hole of the slot, the inner surface of one of the two latching holes forms a latching portion; and a gripping rod, the end of the gripping rod forms a pivoting ear which is deeper into the clamping slot and between the two lugs, and the pivoting ear has a latching hole a toothed portion is formed on the inner surface of the toothed hole; a pivoting positioning group includes: a knob, the knob has a convex ring placed in the lug card slot, and two sliding portions are formed along the diameter of the convex ring, and the convex ring surrounds the space Divided into two semicircular grooves; a limiting member, the limiting member is inserted into the slot of the other lug and combined with the knob; and a card gear, the card gear is interposed between the knob and the limiting member, and the facing The knob portion is raised relative to the opposite joint portion, and each linkage portion can enter and exit the corresponding semicircular groove; when the sliding portion moves to a fixed position with the knob, the linkage portion touches the sliding portion and leaves the semicircular groove, and the card gear is simultaneously engaged and engaged. The latching portion of the pivot ear and the lug; when the sliding portion moves to an activity with the knob When set, the interlocking portion away from the sliding portion can enter the semi-circular groove, so that the card is in meshing engagement gear portion engaging the latch pivot ear. The two-stage wrench according to claim 1, wherein the pivot positioning group further has a spring disposed between the card gear and the limiting member. For example, the two-stage wrench described in claim 1 or 2, wherein There is a joint between the two sliding portions, and the joint portion is fastened with the limiting member through the center of the card gear. The two-stage wrench according to claim 3, wherein one side of the linking portion is a vertical surface, and the other side is a sloped surface, the inclined surface is connected with a barrier portion, and a gap is formed between the obstacle portion and the top surface of the linking portion. Limit slot. The two-stage wrench according to claim 4, wherein the sliding portion has a raised surface that touches the linking portion, and the raised surface abuts a front slope surface complementary to the inclined surface, and the other side forms an opposite slope. Slope, the rear slope is connected to a flat surface. A two-stage wrench includes: a driving rod, the driving rod has a set of fittings, a sliding block for controlling the one-way idling of the fitting and a clamping groove for cutting the end of the driving rod to form two lugs separated from each other Each lug surface has a card slot, and a central portion of the card slot is formed with a small diameter and a through hole for the clamping slot. One of the two inset holes forms a latching portion on the inner surface; and a grip bar, the grip end is formed at one end. The other end of the head forms a pivoting lug between the two lugs, the pivoting ear has a latching hole, and the inner surface of the engaging hole forms a latching portion; and a pivoting positioning group includes: a knob, The knob has a convex ring inserted into the lug card slot, and two sliding portions are formed along the diameter of the convex ring, and the convex ring is divided into two semi-circular grooves around the space; a limiting member, the limiting member is inserted into the slot of the other lug And the knob is combined; and a card gear, the card gear is between the knob and the limiting member, and the opposite portion of the knob portion is raised, and each linkage portion can be The corresponding semi-circular groove; when the sliding portion moves to a non-moving position with the knob, the linking portion touches the sliding portion and leaves the semi-circular groove, and the connecting card gear simultaneously engages the engaging portion of the engaging lug and the lug; when the sliding portion follows When the knob is moved to a movable position, the interlocking portion leaves the sliding portion to enter the semicircular groove, so that the card gear meshes with the engaging portion of the pivoting lug. The two-stage wrench according to claim 6, wherein the pivot positioning group further has a spring disposed between the card gear and the limiting member. The two-stage wrench according to claim 6 or 7, wherein the two sliding portions have a joint portion, and the joint portion is fastened to the stopper member through the center of the card gear. The two-stage wrench according to claim 8, wherein the one side of the linking portion is a vertical surface, and the other side is a sloped surface, the inclined surface is connected with a barrier portion, and a gap is formed between the obstacle portion and the top surface of the linking portion. Limit slot. The two-stage wrench according to claim 9, wherein the sliding portion has a raised surface that touches the linking portion, and the raised surface abuts a front slope surface complementary to the inclined surface, and the other side forms an opposite slope. Slope, the rear slope is connected to a flat surface. The two-stage wrench according to claim 10, wherein the head profile is selected from the group consisting of an open jaw, a ratchet sleeve and a plum blossom group.