TW201617179A - Screwdriver - Google Patents

Abstract

A screwdriver includes a housing, a connecting member installed on an end of the housing, a handle, a first elastic member, and a transmission member. The housing includes a main body. The handle is rotatably equipped on the main body and partly received in the main body. Two ends of the first elastic member are fixed to the handle and the main body, respectively. The transmission member is rotatably received in the main body and is capable of meshing with the handle. An end of the connecting member is received in the main body and connects to the transmission member, and another end of the connecting member extends out of the main body. When the handle is driven to move, the handle meshes with the connecting member, and then drive the connecting member to rotate.

Description

screwdriver

The invention relates to a screwdriver for disassembling a screw.

Screwdrivers are widely used for disassembly screws, which include a handle and a head provided at one end of the handle, and the head is formed with an engaging structure corresponding to the tail groove of the screw. When disassembling the screws, insert the joint structure of the screwdriver into the rear groove of the screw. In order to allow the screw to enter or exit the workpiece in a specific direction (such as clockwise or counterclockwise), the user needs to use the wrist to circle in the specific direction. Rotating the handle in one turn is laborious and inconvenient to operate.

In view of the foregoing, it is necessary to provide a screwdriver that is easy to operate.

A screwdriver includes a housing and a connector mounted to one end of the housing. The housing includes a main body, the screwdriver further includes a handle, a first elastic member and a transmission member. The handle is rotatably mounted on the main body and partially received in the main body, and the first elastic member is fixed at one end to the handle. The other end of the first elastic member is fixed on the handle, the transmission member is rotatably received in the main body and can be engaged with the handle, and one end of the connecting member is received in the main body and connected to the transmission member, and the connecting member is The other end protrudes out of the main body, and when the handle is driven to move, the handle engages with the connecting member, thereby driving the transmission member and the connecting member to rotate.

The screwdriver of the present invention can be driven by the upper and lower movements of the operating handle by means of the handles, the transmission member and the first elastic member which are matched with each other, thereby continuously driving the transmission member to rotate, which is convenient and labor-saving.

1 is a perspective assembled view of a screwdriver according to an embodiment of the present invention.

2 is an exploded perspective view of the screwdriver shown in FIG. 1.

3 is an exploded perspective view of another perspective view of the screwdriver shown in FIG. 1.

Figure 4 is a cross-sectional view of the screwdriver of Figure 1 as it is rotated.

Fig. 5 is a view showing the use of the screwdriver shown in Fig. 4 in the forward rotation.

Figure 6 is a cross-sectional view showing the screwdriver of Figure 1 in reverse.

Referring to FIGS. 1 through 3 together, the screwdriver 100 of the present invention includes a housing 20, a connector 40, a drive assembly 50, a transmission assembly 60, a steering assembly 70, and an adjustment assembly 80. The driving assembly 50 is mounted on the housing 20 and partially received in the housing 20. The transmission assembly 60 is rotatably received in the housing 20 and meshed with the drive assembly 50. The steering assembly 70 is received in the housing 20 and meshes with the transmission assembly 60. The connecting member 40 is mounted at one end of the housing 20 and partially received in the housing 20 . The adjustment assembly 80 is screwed to one end of the housing 20 and sleeved on the connector 40, and the adjustment assembly 80 can drive the connector 40 to be fixedly coupled to the transmission assembly 60 or to the steering assembly 70.

The housing 20 includes a substantially cylindrical body 21 and a handle 23 projecting from one side of the body 21. The first cavity 212, the second cavity 214 and the third cavity 215 are connected to each other in the axial direction of the main body 21, and the diameters of the first cavity 212 and the third cavity 215 are larger than the second cavity 214. And the third cavity 215 penetrates one end of the body 21. The bottom end of the first cavity 212 extends toward the top end of the second cavity 214 to form a connecting surface 218 (refer to FIG. 6) for connecting the first cavity 212 and the second cavity 214. Two first mounting portions 216 and second mounting portions 217 are formed on the sidewalls of the first cavity 212. The first mounting portions 216 and the second mounting portions 217 are sequentially spaced apart along the axial direction of the main body 21, and the first mounting is performed. The portions 216 are located on opposite sides of the handle 23 , and the second mounting portion 217 is disposed adjacent to the connecting surface 218 of the first cavity 212 and the second cavity 214 . The outer surface of the main body 21 adjacent to one end of the third cavity 215 is formed with a plurality of external threads 219. A receiving groove 231 is defined in a side of the handle 23 adjacent to one of the third cavity 215.

The drive assembly 50 includes a handle 51, a first elastic member 53, and a rotating shaft 55. The handle 51 includes a grip portion 511 and an engaging portion 513 formed at one end of the grip portion 511. A mounting hole 514 is defined in the grip portion 511 at one end of the engaging portion 513 , and the shape of the grip portion 511 is matched with the shape of the receiving groove 231 so that the grip portion 511 can be received in the receiving groove 231 . The engaging portion 513 is received in the first cavity 212 and located between the two first mounting portions 216 , and a plurality of teeth 516 are formed on one side of the engaging portion 513 away from the grip portion 511 . The rotating shaft 55 passes through the mounting hole 514 and is fixedly mounted on the side wall of the receiving groove 231 , and the handle 51 is rotatable around the rotating shaft 55 to receive the grip portion 511 in the receiving groove 231 . The first elastic member 53 is sleeved on the rotating shaft 55 and has one end fixed to the handle 23 and the other end fixed to the grip portion 511. When the handle 51 rotates around the rotating shaft 55 to receive the grip portion 511 in the receiving groove 231, the first elastic member 53 is stretched, and when the external force is removed, the handle 51 returns to the initial position under the elastic restoring force of the first elastic member 53. . In the embodiment, a preset rotation angle is formed between the handle 51 and the handle 23, and the preset rotation angle cooperates with the angle between the thumb and the remaining four fingers when the human hand is held, so that the user uses the screwdriver 100. When the thumb of the hand and the remaining four fingers are directly held on the handle 51 and the handle 23, respectively, it is convenient to operate.

The transmission assembly 60 includes a transmission member 61 and two bearings 63. The transmission member 61 is substantially in the shape of a rod and is rotatably mounted on the two first mounting portions 216 along the axial direction of the housing 20. The outer surface of the transmission member 61 is formed with a thread 612 that cooperates with the teeth 516 of the engaging portion 513, and a first gear 613 is formed on the outer surface of one end of the second cavity 214, and is adjacent to the second cavity. A mounting groove 614 is formed in the recessed end surface of the body 214. The two bearings 63 are sleeved on the transmission member 61 and are respectively mounted on the two first mounting portions 216 for reducing the frictional force when the transmission member 61 rotates. In the present embodiment, the transmission member 61 is a screw.

The steering assembly 70 includes a first steering member 71 and a second steering member 73. The first steering member 71 is rotatably mounted on the second mounting portion 217 and meshes with the first gear 613 on the transmission member 61. The second steering member 73 is rotatably mounted on the second mounting portion 217 and the connecting surface 218 of the first cavity 212 and the second cavity 214 , and is spaced apart from the first steering member 71 . A second gear 732 is formed at opposite ends of the second steering member 73. The second steering member 73 is engaged with the first steering member 71 adjacent to the second gear 732 of the second mounting portion 217.

Referring to FIG. 4 , the connecting member 40 is substantially in the shape of a rod, and is slidably disposed in the first cavity 212 , the second cavity 214 , and the third cavity 215 , and partially protrudes out of the third cavity 215 . The connecting member 40 is formed adjacent to an outer surface of one end of the first cavity 212 to form a third gear 42 engageable with the second gear 732. The diameter of the third gear 42 is between the diameter of the first cavity 212 and the diameter of the second cavity 214, and the third gear 42 is abutted on the connection surface 218 of the first cavity 212 and the second cavity 214. . The connector 40 is received in the mounting groove 614 adjacent to one end of the first cavity 212. The connecting member 40 protrudes from one end of the third cavity 215 and is recessed to form a mounting hole 45 for assembling various types of screwdriver heads (not shown).

The adjustment assembly 80 includes an adjustment member 82, a second elastic member 84, and a resisting member 86. The adjusting member 82 is substantially frusto-conical, and is screwed to one end of the main body 21 formed with the external thread 219. One end of the adjusting member 82 is recessed with a fitting groove 821. The side wall of the fitting groove 821 is formed with a plurality of internal threads 823 (refer to FIG. 6) which cooperate with the external thread 219 of the main body 21, and the bottom of the fitting groove 821 is formed with a convex portion. Boss 825. The diameter of the boss 825 is slightly smaller than the diameter of the third cavity 215 so that the boss 825 can be received in the third cavity 215. The through hole 825 of the adjusting member 82 at one end of the fixing groove 821 is provided with a through hole 826 communicating with the third cavity 215 for the connecting member 40 to pass through. The resisting member 86 is fixedly sleeved on the connecting member 40 and slidably received in the third cavity 215 adjacent to one end of the boss 825. The second elastic member 84 is received in the third cavity 215, and the two ends thereof are respectively abutted on the connecting surface of the resisting member 86 and the second cavity 214 and the third cavity 215. In this embodiment, the second elastic member 84 is in a compressed state, and a pre-pressure is applied to the screwdriver head by the resisting member 86 and the connecting member 40, and then transmitted to the screw (not shown), so that the screw can be screwed into the workpiece. Press on the workpiece (not shown) to prevent the screw from falling off the workpiece when no force is applied. In this embodiment, the abutting member 86 is sleeved on the connecting member 40 and fixed to the connecting member 40 by the pin 87.

Referring to FIG. 4 and FIG. 5 together, when the screw is screwed, the adjusting member 82 is rotated to move the adjusting member 82 toward the housing 20 at one end of the handle 23, and the boss 825 pushes against the blocking member 86 to move toward the transmitting member 61. The connecting member 40 is moved toward the transmission member 61, and the connecting member 40 is received in the mounting groove 614 at one end of the connecting member 40 and abuts against the bottom of the mounting groove 614, so that the connecting member 40 is directly fixedly connected to the transmission member 61. At this time, the third gear 42 on the connecting member 40 and the second steering member 73 are disengaged from the second gear 732 of the second cavity 214. An external force is applied to the grip portion 511. Under the action of the external force, the engaging portion 513 of the handle 51 meshes with the thread 612 on the transmission member 61, and the external force drives the grip portion 511 to move toward the handle 23 until the grip portion 511 is received in the handle. 23 in the receiving slot 231. During the movement of the grip portion 511 toward the handle 23, the handle 51 sequentially drives the transmission member 61 and the connecting member 40 to rotate in a first direction (such as a clockwise direction) by the engaging portion 513, thereby screwing the screw into the workpiece for a distance. After the grip portion 511 is received in the receiving groove 231, the external force is removed, and the engaging portion 513 of the handle 51 is disengaged from the thread 612 on the transmission member 61. The elastic restoring force of the first elastic member 53 drives the grip portion 511 toward the handle away from the handle. The direction of motion in 23 is then restored. By repeating the above actions, the screw can be continuously screwed into the workpiece.

Referring to FIG. 6 together, when the screw is screwed out, the adjusting member 82 is rotated to move the adjusting member 82 away from the handle 23. The boss 825 is disengaged from the resisting member 86, and the resilient member 86 is elasticized by the second elastic member 84. The restoring member 86 moves toward the boss 825 under the restoring force, thereby driving the connecting member 40 away from the mounting groove 614 of the transmission member 61 until the third gear 42 abuts the connection between the second cavity 214 and the third cavity 215. Face 218. At this time, the third gear 42 on the connecting member 40 meshes with the second gear 732 on the second steering member 73 away from the first steering member 71. An external force is applied to the grip portion 511. Under the action of the external force, the engaging portion 513 of the handle 51 meshes with the thread 612 on the transmission member 61, and the external force drives the grip portion 511 to move toward the handle 23 until the grip portion 511 is received in the handle. 23 in the receiving slot 231. During the movement of the grip portion 511 toward the handle 23, the handle 51 drives the transmission member 61 to rotate in the first direction by the engaging portion 513. The transmission member 61 sequentially drives the connecting member 40 by the first steering member 71 and the second steering member 73. Rotate in a second direction opposite the first direction (eg, counterclockwise) to cause the screw to tap the workpiece a distance. After the grip portion 511 is received in the receiving groove 231, the external force is removed, and the engaging portion 513 of the handle 51 is disengaged from the thread 612 on the transmission member 61. The elastic restoring force of the first elastic member 53 drives the grip portion 511 toward the handle away from the handle. The direction of motion in 23 is then restored. By repeating the above actions, the screws can be screwed out of the workpiece continuously.

The screwdriver 100 of the present embodiment is provided with the handle 51 that is engaged with the transmission member 61. The user only needs to hold the handle 51 to move upward to drive the transmission member 61 to rotate, thereby driving the connecting member 40 to rotate, and the operation is convenient. In addition, by providing a steering assembly 70 that cooperates with the transmission member 61 and an adjustment member 82 that cooperates with the connecting member 40, the connection relationship between the transmission member 61 and the connecting member 40 is changed, thereby changing the rotation direction of the connecting member 40, thereby The user only needs to hold the handle 51 to move upwards to simultaneously screw or screw the screw.

It can be understood that the rotating shaft 55 can be omitted, and the handle 51 can be directly rotated and mounted on the handle 23. The bearing 63 can also be omitted, and the lubricating oil can be applied to the transmission member 61 to reduce the frictional force during rotation. The second elastic member 84 can also be omitted. After the adjusting member 82 moves away from the handle 23, the boss 825 is disengaged from the resisting member 86, and the connecting member 40 can also be reset under the action of gravity, thereby connecting the connecting member 40 and the second deflecting member 73. Engaged to change the direction of rotation of the connector 40. The abutting member 86 and the boss 825 can also be omitted. At this time, the adjusting member 82 is screwed onto the main body 21 and fixed to the connecting member 40. When the adjusting member 82 moves, the connecting member 40 can be directly driven to perform corresponding movement.

It can be understood that the connecting member 40 and the screwdriver head can be integrally formed, and at this time, the screwdriver 100 can be directly screwed with the screw, and no additional assembling of the screwdriver head is required. The steering assembly 70 and the adjustment assembly 80 can be omitted. At this time, the connecting member 40 is connected to the transmission member 61, and the transmission member 61 drives the connecting member 40 to rotate in the same direction. The handle 51 drives the transmission member 61 and drives the connecting member 40 to rotate in a specific direction to screw or screw the screw out of the workpiece, and then manually rotate the screwdriver 100 to rotate the screwdriver 100 as a whole in a direction opposite to the specific direction. Screw or screw the screw into the workpiece.

It can be understood that the connection manner of the adjusting member 82 and the main body 21 is not limited to the above-mentioned screwing connection, and the engaging structure (such as the hook and the card slot) can be arranged on the adjusting member 82 and the main body 21 as long as it can be adjusted. The member 82 can be moved relative to the main body 21 and can be positioned at different preset positions, that is, as long as the adjusting member 82 moves relative to the main body 21, the connecting member 40 can be inserted into the mounting groove 614 and positioned at the position, and can also be The driving connector 40 is disengaged from the mounting groove 614 and meshed with the second gear 732 and positioned at the position.

It can be understood that the handle 23 can also be omitted. At this time, the handle 51 is rotatably mounted on the main body 21, as long as the handle 51 can be toggled and further drives the transmission member 61 and the connecting member 40 to rotate.

In summary, the present invention complies with the requirements of the invention patent, and submits a patent application according to law. However, the above is only a preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims.

100‧‧‧ screwdriver

20‧‧‧shell

21‧‧‧ Subject

212‧‧‧First cavity

214‧‧‧Second cavity

215‧‧‧ third cavity

216‧‧‧First Installation Department

217‧‧‧Second Installation Department

218‧‧‧ Connection surface

219‧‧‧ external thread

23‧‧‧Hands

231‧‧‧ Reception trough

40‧‧‧Connecting parts

42‧‧‧ Third gear

45‧‧‧Assembly holes

50‧‧‧Drive components

51‧‧‧handle

511‧‧‧ grip

513‧‧‧Meshing Department

514‧‧‧Installation holes

516‧‧‧ teeth

53‧‧‧First elastic parts

55‧‧‧ shaft

60‧‧‧ Transmission components

61‧‧‧ Transmission parts

612‧‧‧ thread

613‧‧‧First gear

614‧‧‧Installation slot

63‧‧‧ bearing

70‧‧‧Steering components

71‧‧‧First steering piece

73‧‧‧Second steering piece

732‧‧‧second gear

80‧‧‧Adjustment components

82‧‧‧Adjustment

821‧‧‧Assemble

823‧‧‧ internal thread

825‧‧‧ boss

826‧‧‧through holes

84‧‧‧Second elastic parts

86‧‧‧Resistance

87‧‧‧ Pins

no

100‧‧‧ screwdriver

20‧‧‧shell

21‧‧‧ Subject

219‧‧‧ external thread

23‧‧‧Hands

40‧‧‧Connecting parts

50‧‧‧Drive components

80‧‧‧Adjustment components

Claims (10)

A screwdriver comprising a housing and a connecting member mounted on one end of the housing, wherein the housing comprises a main body, the screwdriver further comprising a handle, a first elastic member and a transmission member, the handle being rotatably mounted on the main body The upper elastic member is fixed in the main body, the first elastic member is fixed at one end to the handle, the other end of the first elastic member is fixed to the main body, and the transmission member is rotatably received in the main body and can be engaged with the handle One end of the connecting member is received in the main body and connected to the transmission member, and the other end of the connecting member protrudes outside the main body. When the handle is driven to move, the handle engages with the connecting member, thereby driving the transmission. The piece and the connecting piece rotate. The screwdriver of claim 1, wherein the handle comprises a grip portion and an engaging portion formed at one end of the grip portion, the engaging portion is received in the main body, and the engaging portion is formed with the engaging portion Match the thread. The screwdriver of claim 1, wherein the transmission member is recessed adjacent to one end of the connecting member to form a mounting groove, and one end of the connecting member is received in the mounting groove. The screwdriver of claim 3, wherein the screwdriver further comprises an adjusting member mounted on the main body adjacent to one end of the connecting member, and capable of driving the connecting member to move toward the transmitting member to make the connecting member The mounting slot is inserted or the connector is moved toward the transmission member to disengage the connector from the mounting slot. The screwdriver of claim 1, wherein the screwdriver further comprises a first steering member and a second steering member fixed in the main body, the first steering member and the transmission member being engaged with one end of the connecting member One end of the second steering member is engaged with the first steering, and the other end of the second steering member is engaged with the connecting member adjacent one end of the transmission member. The screwdriver of claim 5, wherein the screwdriver further comprises an adjusting member mounted on the main body adjacent to one end of the connecting member, and capable of driving the connecting member toward the transmitting member to make the connecting member Disengaging the second steering member from one end of the first rotating member or driving the connecting member away from the transmitting member to engage the connecting member and the second steering member away from one end of the first rotating member. The screwdriver of claim 6, wherein one end of the adjusting member is recessed and formed with a fitting groove, and the main body is received in the fitting groove adjacent to one end of the connecting member, and the bottom of the fitting groove is convexly formed with a convex portion. And the other end of the adjusting member is provided with a through hole for the connecting member to pass through the protruding portion, the screwdriver further includes a resisting member fixedly sleeved on the connecting member and received in the main body, adjusting the When the adjusting member is used, the boss can push the resisting member to move the connecting member toward the transmitting member. The screwdriver of claim 7, wherein the main body is formed with an external thread adjacent to one end of the connecting member, and an inner thread of the fitting groove is formed on the inner wall of the fitting groove. The screwdriver according to claim 7, wherein the first cavity, the second cavity and the third cavity are connected to each other in the axial direction of the main body, and the first cavity and the third cavity The transmission member, the first steering member and the second steering member are respectively received in the first cavity, and the connecting member is sequentially received in the first cavity, the second The cavity and the third cavity extend out of the third cavity, the resisting member is received in the third cavity, the screwdriver further includes a second elastic member, and the second elastic member is received in the third cavity One end of the second elastic member abuts against the abutting member, and the other end of the second elastic member abuts against the connecting surface of the second cavity on the third cavity. The screwdriver of claim 1, wherein the housing further includes a handle protrudingly formed on the main body, the handle is rotatably mounted on the handle and partially received in the main body, and the handle and the handle are A preset angle is formed between the handles, and one of the handles is laterally provided with a receiving groove for receiving the handle.