TWI457209B - Hand tools of the torque body - Google Patents

Description

Hand tool torque mechanism

The invention relates to hand tools and, in particular, to a torsion mechanism of a hand tool.

A screwdriver or sleeve type hand tool is provided with a torsion mechanism in order to avoid excessive torque. The first figure shows a screwdriver (10) provided with a torsion mechanism (12) having a two-toothed block (13) (14) and a compression spring (16), the two-toothed block (13) One end of (14) is provided with a ring of teeth (131) (141); the compression spring (16) is pressed against one of the tooth blocks to keep the two tooth blocks elastically engaged. The torsion mechanism (12) provides an effect of limiting the torque. When the force applied by the screwdriver (10) is greater than the torque limit of the torsion mechanism (12), the teeth of the two teeth (13) (14) (131) (141) will slip off so that the screwdriver cannot transmit the force.

In a conventional torsion structure, a compression spring (16) bears against one of the teeth from the outer side of the two teeth (13) (14) to keep the two teeth in engagement. Such a conventional structure forms a large volume and requires a large assembly space. For example, the torsion mechanism (12) is installed in the grip of the screwdriver (10).

In addition, some torsion mechanisms have a design that can adjust the torsion force. However, the conventional adjustment structure is complicated and difficult to operate.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a torsion mechanism for a hand tool that provides a torsion mechanism that is different from conventional constructions.

Another object of the present invention is to provide a torsion mechanism for a hand tool that can reduce assembly space.

It is still another object of the present invention to provide a torsion mechanism for a hand tool having a function of adjustable torsion and easy adjustment.

The torsion mechanism provided by the present invention comprises: a first and a second engagement The members are axially arranged, one end of which is engaged with each other; a sleeve is sleeved on the outer periphery of the two engaging members; an elastic member is disposed between the two engaging members, and the elastic energy thereof drives the two teeth The connectors are adjacent to each other such that the two engagement members remain resiliently engaged.

Wherein, at least a rotating member is disposed inside the first engaging member to be rotatable inside the engaging member; and one end of the elastic member is coupled to the rotating member.

In addition, a connecting member is disposed inside the second engaging member, the connecting member is displaceable and positionable in the second engaging member; the other end of the elastic member is connected to the connecting member; by changing the connecting member The distance from the rotating member can change the elastic energy of the elastic member, thereby adjusting the torque limit of the torque mechanism.

The torsion mechanism can be applied to a variety of different types of hand tools, and its structure is light and can reduce space.

For a better understanding of the objects, features and advantages of the present invention, the preferred embodiments of the present invention are described in the following. Wherein: the first figure is a cross-sectional view of a screwdriver having a torsion mechanism.

The second drawing is a front view of a preferred embodiment of the present invention applied to a hand tool.

The third figure is a perspective view of another preferred embodiment of the present invention applied to another hand tool.

The fourth figure is a front view of a preferred embodiment of the present invention applied to yet another hand tool.

Figure 5 is an exploded perspective view of a first preferred embodiment of the present invention.

The sixth drawing is a combined longitudinal sectional view of the fifth figure.

The seventh drawing is a sectional view taken along line 7-7 of the sixth drawing.

The eighth figure is similar to the sixth figure, showing that the torsion mechanism of the present invention produces slippage status.

Figure 9 is a longitudinal sectional view showing a second preferred embodiment of the present invention.

Figure 11 is a longitudinal sectional view showing a third preferred embodiment of the present invention.

Figure 11 is a longitudinal sectional view showing a fourth preferred embodiment of the present invention.

Figure 12 is a side view of the eleventh figure.

Figure 13 is a longitudinal sectional view showing a fifth preferred embodiment of the present invention.

Referring to Figures 2 to 4, the torsion mechanism (20) provided by the present invention can be applied to different types of hand tools, for example, to the T-handle (21) shown in the second figure; or to the third figure. The pin (22) shown; or the screwdriver (23) shown in the fourth figure can also be applied to the sleeve.

Referring to FIGS. 5 and 6, the torsion mechanism (20) includes: a first and a second engaging member (30) (40); at least one rotating member, an elastic member (60), and a sleeve ( 25).

The two engaging members (30) are arranged in an axial direction; the two engaging members have the same structure, and the first engaging member (30) is illustrated, and one end of the engaging member is a engaging end. The end is provided with an engaging portion (32) in the form of a ring; a space (34) is formed in the engaging member (30), the space (34) extending through the end face of the engaging end. Similarly, one end of the second engaging member (40) is a meshing end and has an engaging portion (42) and a space (44). The engagement portions (32) (42) of the two engagement members (30) (40) are engaged. The two engaging portions may be of various structures capable of generating a clutch relationship, and are not limited to the embodiment. For example, each of the engaging portions has a ring of teeth, a ratchet, or a matching structure of the recess and the steel ball.

The sleeve (25) is sleeved on the outer circumference of the two engaging members, so that the two engaging members are axially engaged and not offset, and the two ends of the sleeve (25) are received by the two limiting members (26). The two limiting members, such as C-shaped buckles, are respectively buckled on the outer circumferential surfaces of the two engaging members (30) (40).

The embodiment has two rotating members (50) (55) respectively mounted on the two engaging members (30) The space (34) (44) of (40) may be any structure or member that is free to rotate within the engagement member but does not displace within the engagement portion, and is not limited to the description herein. The two rotating members of the embodiment have the same structure, the first rotating member (50) has a cylindrical shape, and a circumferential groove (52) is disposed on the circumferential surface thereof; a connecting portion (54) is disposed on the rotating member (50) Similarly, the second rotating member (55) is also cylindrical, and the peripheral mask has a ring groove (56), and one end has a connecting portion (58); the two rotating members (50) (55) are respectively installed It is rotatable in the space (34) (44) of the two engaging members (30) (40). The two limiting pins (36) are radially disposed on the circumferential surfaces of the engaging members (30) and (40), and the inner ends of the two limiting pins (36) extend into the rotating members (50) or The ring groove (52) or (56) of (55), as in the seventh figure, allows each of the rotating members to rotate within each of the engaging members, but does not displace within the engaging members. It should be noted that the present specification is installed in the first engaging member (30) by the first rotating member (50), and the second rotating member (55) is installed in the second engaging member (40). The description is only for convenience of description; the second rotating member may be disposed in the first engaging member; and the first rotating member may be disposed in the second engaging member.

The elastic member (60) is a tension spring inserted into the two engaging members (30) (40) and located between the two engaging members, and the hook portions (62) at the two ends are respectively hooked thereto. a connecting portion (54) (58) of the two rotating members (50) (55), the pulling force of the elastic member (60) causes the two engaging members to approach each other to keep the two engaging portions (32) (42) Elastically engaged.

Taking the screwdriver (23) of the fourth figure as an example, when the present invention is used, the two engaging members (30) (40) are maintained as long as the user's applied force does not exceed the torque that can be transmitted by the torsion mechanism (20). Engaged, as in the state of Figure 6, so the screwdriver can drive the screw.

If the force applied by the user exceeds the torsion limit that the torsion mechanism (20) can withstand, the slippage of the two engaging portions (32) (42) will be greater than the tensile force of the elastic member (60), so that the two teeth The connector (30) (40) produces a slippage. As shown in the eighth figure, the screwdriver (23) will not be able to continue to rotate the screw, and the user can also sense that the applied force has reached the torque limit of the torque mechanism.

When the two engaging members (30) (40) are slipped and rotated relative to each other (i.e., the amount of rotation is different), for example, the first engaging member (30) generates a rotation and the second engaging member (40) Without rotation, at this time, one of the rotating members or the two rotating members (50) (55) will rotate to prevent the elastic member from being twisted.

After releasing the force, the elastic member (60) will return the two engaging members (30) (40) to the engaged state of the sixth figure by pulling the two rotating members (50).

The ninth embodiment is a second preferred embodiment of the torsion mechanism (20') of the present invention, and the same components as those of the first embodiment are denoted by the same reference numerals and will not be described again. The torsion mechanism (20') also has a first engagement member (30) and a second engagement member (40) that are axially engaged, and the two engagement members are constrained by a sleeve (25). a rotating member (50) is disposed in the space (34) of the first engaging member (30), is rotatably and can not be displaced in the space (34); a connecting member (70) is a column The body is mounted in the space (44) of the second engaging member (40) and fixed by a pin or rod (72). The two ends of the elastic member (60) are respectively connected to the rotating member (50) and the connecting portion (54) (74) of the connecting member (70). Thereby, the engaging portion (32) (42) of the two engaging members (30) (40) maintains elastic engagement, and when the torsion mechanism (20') is subjected to a biasing force greater than a torque limit thereof, the two engaging members The joint will produce a slip; the rotating member (50) is rotatable within the first engaging member (30) to avoid distortion of the resilient member (60).

The tenth embodiment is a third preferred embodiment of the torsion mechanism of the present invention, which is different from the second embodiment in that the connecting member (75) is a pin or a rod and is fixed to the second engaging member (40). In the space (44); the two ends of the elastic member (60) are respectively connected to the rotating member (50) and the connecting member (75), so that the two engaging members (30) (40) remain elastically engaged.

It can be understood that the rotating member (50) of the second and third embodiments can be installed in the second engaging member (40), and the connecting member (70) or (75) can be installed in the first engaging member. In the connector (30).

The eleventh and twelfth drawings are the fourth preferred embodiment of the torsion mechanism (20''') of the present invention. For example, the embodiment can adjust the torque of the torsion mechanism.

The torsion mechanism has two axially engaging engagement members (30) (40); a sleeve (25) is sleeved on the outer periphery of the two engagement members. A rotating member (50) is disposed in a space of one of the engaging members (for example, the second engaging member 40); and a connecting member (80) is mounted to the other engaging member (for example, the first engaging member 30) a space (60) disposed between the two engaging members, the two ends of which are respectively connected to the rotating member (50) and the connecting member (80), so that the two engaging members are engaged The parts (32) (42) remain elastically engaged. Wherein: the circumferential surface of the other engaging member (30) is provided with two through grooves (37) along the longitudinal direction of the engaging member, communicating with the space (34) of the engaging member; a rod member (81), The connecting member (80) is disposed on each of the two sides of the connecting member, and has an outwardly extending protruding portion (82). The two protruding portions (82) respectively penetrate the two through slots (37) and pass through Out of the engagement member (30), the connector (80) is slidable along the engagement member (30).

An adjusting member (90) is a hollow annular body, such as a nut, threaded on the outer peripheral surface of the engaging member (30), and located at the two protruding portions (82) and the engaging portion (32) At one end, the two protrusions (82) are supported at one end to position the connecting member (80). The adjustment member (90) is displaceable along the engagement member (30) as it is rotated.

The operation of the torsion mechanism (20''') is the same as that of the previous embodiment, and will not be described again. When the adjusting member (90) is rotated, the connecting member (80) can be moved to move away from or close to the rotating member (50). When the connecting member (80) is far away from the rotating member (50), the elastic force of the elastic member (60) is increased, and the two engaging portions (32) (42) are required to slip off. The greater the force, on the other hand, when the connecting member (80) is closer to the rotating member (50), the elastic force of the elastic member (60) is reduced, and the engaging force of the two engaging members (30) (40) is reduced. It is weak and it is easier to slip off. Therefore, moving the position of the connecting member (80) can change the elastic force of the elastic member (60) for adjusting the torque limit of the torque mechanism.

The thirteenth embodiment is a fifth preferred embodiment of the torsion mechanism (20''') of the present invention, and the same components as those of the fourth preferred embodiment are denoted by the same reference numerals.

The sleeve (100) of the embodiment is screwed to the outer surface of the other engaging member (30) in addition to the outer surface of the two engaging members (30) (40); the connecting member The two projections (82) of (80) are supported by one end of the sleeve (100) to position the connector. The connecting member (80) can be moved when the sleeve (100) is rotated to change the tensile force of the elastic member (60), thereby adjusting the torque limit of the torque mechanism.

In the structure of the present invention, the elastic member is disposed between the two engaging members, which is different from the conventional structure, and the space of the torsion mechanism can be saved.

The torsion mechanism of the present invention can be mounted on a rod-shaped portion of a hand tool, such as a screwdriver rod (or a structure forming a driver rod) attached to a screwdriver, and is not required to be attached to a grip of a screwdriver.

In the fourth and fifth embodiments of the present invention, the torque value of the torque mechanism can be set and adjusted by simply rotating the adjusting member (90) or the sleeve (100), and the operation is convenient.

The above embodiments are merely illustrative of the technical means of the present invention and are not limiting.

In summary, the present invention is the first structure in the same kind of articles, and has the improvement of practical effects, and is applied according to law.

(20)(20’)(20”)(20''')(20'''')‧‧‧ Torque Mechanism

(25) (100) ‧ ‧ casing

(26)‧‧‧Limited parts

(30)‧‧‧ 接接件

(32) ‧‧‧Gate

(34) ‧‧‧ Space

(36) ‧ ‧ limited sales

(37) ‧‧‧through slots

(40)‧‧‧ 接接件

(42) ‧ ‧ 啮 部

(44) ‧‧‧ Space

(50) (55) ‧‧‧Rotating parts

(52) (56) ‧ ‧ ring groove

(54) (58) ‧ ‧ Connections

(60) ‧‧‧Flexible components

(62)‧‧‧ hooks

(70)‧‧‧Connectors

(72) ‧‧‧ rods

(74) ‧‧‧Connecting Department

(75)‧‧‧Connectors

(80)‧‧‧Connectors

(82) ‧ ‧ protrusions

(90) ‧‧‧Adjustment

The first figure is a cross-sectional view of a screwdriver having a torsion mechanism.

The second drawing is a front view of a preferred embodiment of the present invention applied to a hand tool.

The third figure is a perspective view of another preferred embodiment of the present invention applied to another hand tool.

The fourth figure is a front view of a preferred embodiment of the present invention applied to yet another hand tool.

Figure 5 is an exploded perspective view of a first preferred embodiment of the present invention.

The sixth drawing is a combined longitudinal sectional view of the fifth figure.

The seventh drawing is a sectional view taken along line 7-7 of the sixth drawing.

The eighth figure is similar to the sixth figure, showing the state in which the torsion mechanism of the present invention produces slippage.

Figure 9 is a longitudinal sectional view showing a second preferred embodiment of the present invention.

Figure 11 is a longitudinal sectional view showing a third preferred embodiment of the present invention.

Figure 11 is a longitudinal sectional view showing a fourth preferred embodiment of the present invention.

Figure 12 is a side view of the eleventh figure.

Figure 13 is a longitudinal sectional view showing a fifth preferred embodiment of the present invention.

(20) ‧ ‧ Torque Mechanism

(25)‧‧‧ casing

(26)‧‧‧Limited parts

(30)‧‧‧ 接接件

(32) ‧‧‧Gate

(34) ‧‧‧ Space

(36) ‧ ‧ limited sales

(40)‧‧‧ 接接件

(42) ‧ ‧ 啮 部

(44) ‧‧‧ Space

(50) (55) ‧‧‧Rotating parts

(52) (56) ‧ ‧ ring groove

(54) (58) ‧ ‧ Connections

(60) ‧‧‧Flexible components

(62)‧‧‧ hooks

Claims (12)

A torque mechanism for a hand tool includes: a first and a second engaging member, one end of each of the engaging members is provided with an engaging portion; a space is formed in the first engaging member; The connecting members are arranged in an axial direction, and the engaging portions are engaged with each other in a clutching relationship; a sleeve is sleeved on the outer circumference of the two engaging members; and a rotating member is disposed in the space of the first engaging member The rotating member is positioned in the first engaging member and is freely rotatable; an elastic member is disposed between the two engaging members, one end of which is connected to the rotating member and the other end is connected to the second engaging member The elastic member retains the two engaging portions in elastic engagement. The torsion mechanism of claim 1, wherein: the second engagement member also forms a space inside; and further comprises: another rotation member disposed in the space of the second engagement member, the another rotation The component is positioned in the second engaging member and is freely rotatable; the two ends of the elastic member are respectively connected to the two rotating members. The torsion mechanism of claim 1, wherein: the second engaging member also forms a space inside; and further comprising: a connecting member disposed in the space of the second engaging member; the elastic member is another One end is connected to the connector. A torsion mechanism for a hand tool includes: a first and a second engaging member, each of the engaging members having an engaging portion at one end thereof and a space formed therein; the two engaging members are shafts In the alignment, the engaging portions are engaged with each other in a clutch relationship; a sleeve is sleeved on the outer circumference of the two engaging members; and a rotating member is positioned in the space of the second engaging member and is freely Rotating; a connecting member is disposed in the space of the first engaging member and is displaceable in the first engaging member; An elastic member is disposed between the two engaging members, the two ends of which are respectively connected to the connecting member and the rotating member, the elastic member is configured to keep the two engaging portions elastically engaged; and an adjusting member is disposed at the connecting Between the piece and the first engaging member, the adjusting member can drive the connecting member to displace within the first engaging member and position the connecting member. The torsion mechanism of claim 4, wherein: the second through groove is disposed on a circumferential surface of the first engaging member along a longitudinal direction of the first engaging member; and each of the connecting members has a protruding portion on each of the two sides. The two protruding portions are respectively disposed in the two through slots; the adjusting member is disposed on the outer circumference of the first engaging member, and is movable and positioned along the longitudinal direction of the first engaging member; the two of the connecting members The protruding portion is in contact with one end of the adjusting member. The torsion mechanism of claim 5, wherein: the outer surface of the first engaging member is provided with a thread; the adjusting member is a hollow annular body and is screwed to the outer peripheral surface of the first engaging member. A torsion mechanism for a hand tool includes: a first and a second engaging member, each of the engaging members having an engaging portion at one end thereof and a space formed therein; the two engaging members are shafts Arranging, the engaging portions are engaged with each other in a clutch relationship; a rotating member is positioned in the space of the second engaging member and is freely rotatable; and a connecting member is disposed on the first engaging member a space in the first engaging member along the first engaging member; an elastic member disposed between the two engaging members, the two ends of which are respectively connected to the connecting member and the rotating member, The elastic member is configured to maintain the two engaging portions elastically engaged; a sleeve is sleeved on the outer periphery of the two engaging members and movable and positioned along the axial direction of the two engaging members; the sleeve can drive the a connector in the first engaging member Move and position the connector. The torsion mechanism of claim 7, wherein: the two through slots are disposed on a circumferential surface of the first engaging member along a longitudinal direction of the first engaging member; and each of the connecting members has a protruding portion on each of the two sides. The two protrusions are respectively disposed in the two through slots and pass through the first engaging member; the two protruding portions are in contact with one end of the sleeve. The torsion mechanism of claim 8, wherein: at least one of the aforementioned engaging members has a circumferential surface provided with a thread; the sleeve is screwed to the outer peripheral surface of the engaging member. The torsion mechanism of any one of claims 1 to 9, wherein the elastic element is a tension spring. The torsion mechanism according to any one of claims 1 to 9, wherein: each of the rotating members has a column shape; a ring groove is disposed on a circumferential surface of the rotating member; and two limiting pins are radially disposed in the phase Corresponding to the circumferential surface of each of the engaging members, the inner end of the engaging member extends into the annular groove of each of the rotating members. A torsion mechanism for a hand tool includes: a first and a second engaging member, each of the engaging members is provided with an engaging portion at one end thereof, and a space is formed in the inner portion thereof, and the engaging portion is in a clutch relationship Engaging each other; a sleeve is sleeved on the outer circumference of the two engaging members; a rotating member is positioned in the space of the second engaging member and is freely rotatable; a connecting member is disposed on the first In a space of the engaging member, the connecting member is displaceable and positionable in the second engaging member to change the distance between the connecting member and the rotating member; an elastic member is disposed in the two engaging members The two ends are respectively connected to the connecting member and the rotating member, and the elastic member is configured to keep the two engaging portions elastically engaged.