TWM641990U - Drive head of power rotary tools - Google Patents

Abstract

This creation relates to a driving head for a power rotary tool, which includes a body, a rotating mechanism, a switching piece and a locking structure. The body defines an axial direction and a radial direction not parallel to the axial direction, and the body defines a through hole along the axial direction. The rotating mechanism includes a rotating seat, which is rotatably arranged in the through hole along the axial direction. The switching member is assembled with the rotating seat along the axial direction. The locking structure includes a first locking portion and a second locking portion, the first locking portion is arranged on the body, and the second locking portion is radially movable on the rotating seat. Wherein, the switching member can selectively move in a release position and a locking position along the axial direction. When the switching member is in the release position, the switching member does not radially push against the second locking portion and the first locking portion. The card parts are locked against each other, and the rotating seat can rotate relative to the body; when the switching member is at the locking position, the switching member radially pushes against the second card part and is locked against the first card part, and the rotating seat is Cannot rotate relative to the body.

Description

Drive head for power rotary tools

This creation relates to a driving head for a power rotary tool, in particular to an improvement in the technical structure of a driving head for a power rotary tool.

Press, the commonly used power ratchet wrench uses an air motor or similar device to provide the driving force for the reciprocating swing of the driving part relative to the driving head. The rotation of the assembly parts (such as screws and nuts) of the driving part of the seat can be easily assembled or disassembled. The power ratchet wrench described in the patent No. TWI346600 and TWM562751 belongs to this category. The above-mentioned patents are provided with steel balls that spring axially against the rotating base, and the steel balls axially spring against the body to generate friction, so that the rotating base will not be driven to rotate when the driving member rotates. However, although this type of conventional power ratchet wrench can change the direction of engagement of the ratchet parts of the ratchet device by rotating the switching member to adjust the direction of rotation of the rotating base, since the rotating base system can normally rotate relative to the drive head, As a result, it often leads to the problem that the direction cannot be adjusted smoothly, or the user accidentally touches the switching part, which causes the rotation direction of the rotating seat to change, which is not very convenient to use. Therefore, the conventional power ratchet wrench has a shortcoming that needs to be improved urgently. cons.

Therefore, it is necessary to provide a novel and progressive driving head for power rotary tools to solve the above-mentioned problems.

The main purpose of this creation is to provide a driving head for power rotary tools, which can effectively switch the rotation direction of the rotating base, and can avoid accidentally touching the switching parts and causing the rotation direction of the rotating base to change, which is more convenient in use .

To achieve the above purpose, the invention provides a driving head for a power rotary tool, which includes a body, a rotating mechanism, a switching element and a locking structure. The body defines an axial direction and a radial direction not parallel to the axial direction, and the body defines a through hole along the axial direction. The rotating mechanism includes a rotating seat, which is rotatably arranged in the through hole along the axial direction. The switching member is assembled with the rotating seat along the axial direction. The locking structure includes a first locking portion and a second locking portion, the first locking portion is arranged on the body, and the second locking portion is radially movable on the rotating seat. Wherein, the switching member can selectively move in a release position and a locking position along the axial direction. When the switching member is in the release position, the switching member does not radially push against the second locking portion and the first locking portion. The card parts are locked against each other, and the rotating seat can rotate relative to the body; when the switching member is at the locking position, the switching member radially pushes against the second card part and is locked against the first card part, and the rotating seat is Cannot rotate relative to the body.

The following examples are only used to illustrate the possible implementation of this creation, but it is not intended to limit the scope of protection of this creation, and it will be described first.

Please refer to FIGS. 1 to 10 , which show a preferred embodiment of the present creation. The driving head of the power ratchet wrench of the present creation includes a body 1 , a rotating mechanism 2 , a switching member 3 and a locking structure 4 .

The body 1 defines an axial direction L1 and a radial direction L2 not parallel to the axial direction L1, and the body 1 defines a through hole 101 along the axial direction L1.

The rotating mechanism 2 includes a rotating seat 21 , and the rotating seat 21 is rotatably disposed in the through hole 101 along the axis L1 .

The switching member 3 is assembled with the rotating seat 21 along the axial direction L1.

The locking structure 4 includes a first locking portion 41 and a second locking portion 42 , the first locking portion 41 is disposed on the body 1 , and the second locking portion 42 is disposed on the rotating seat 21 so as to be movable in a radial direction L2.

Wherein, the switch member 3 can selectively move in a release position and a lock position along the axial direction L1. When the switch member 3 is in the release position (as shown in FIG. 7 ), the switch member 3 is not radial L2 pushes against the second clamping portion 42 and the first clamping portion 41, and the rotating base 21 can rotate relative to the body 1, so the switching member 3 and the rotating base 21 are in a co-moving state, and cannot be moved by Rotate the switching member 3 to switch the rotation direction of the rotating seat 21; when the switching member 3 is in the locked position (as shown in Figure 8), the switching member 3 pushes against the second clamping portion 42 in the radial direction L2 Stuck against the first clamping portion 41, the rotating seat 21 cannot rotate relative to the body 1. At this time, when the switching member 3 is rotated, the rotating seat 21 will not rotate relative to the switching member 3, so as to achieve smooth switching of the rotating The purpose of the rotation direction of the seat 21 is, therefore, when the switching member 3 is located at the release position, it can effectively prevent the user from accidentally turning the switching member 3 by mistake to switch the rotation direction of the rotating seat 21.

Specifically, the main body 1 is further provided with a driving part 11, the driving part 11 swings back and forth relative to the main body 1, the driving part 11 encloses a containing hole 12 and includes a first inner ring tooth surrounding the containing hole 12 part 13, the rotating mechanism 2 includes a first ratchet member 22, the first ratchet member 22 is pivotally mounted on the rotating base 21, and the switching member 3 is further provided with a first elastic member 31, the first elastic member The member 31 bounces against the first ratchet member 22, and by turning the switching member 3, the first resilient member 31 pushes against the first ratchet member 22 to swing, so that the first ratchet member 22 Both ends selectively mesh with the first inner ring tooth portion 13 . For example, the switching member 3 can rotate in a first position and a second position relative to the rotating seat 21. When the switching member 3 is in the first position (as shown in Figures 5 and 6), the first spring The contact member 31 pushes against the right end of the first ratchet member 22 and engages with the first inner ring tooth portion 13, so that when the driving member 11 swings counterclockwise, the first inner ring tooth portion 13 will drive The first ratchet member 22 and the rotating seat 21 rotate in the counterclockwise direction; when the driving member 11 swings in the clockwise direction (that is, when turning), the first ratchet member 22 and the first inner ring gear 13 smoothly jumps the teeth, so that the reciprocating swing of the driving member 11 can drive the rotating seat 21 to rotate counterclockwise in one direction. Conversely, when the switching member 3 rotates to the second position (as shown in Figures 9 and 10), the reciprocating swing of the driving member 11 can drive the rotating seat 21 to rotate clockwise in one direction. Add more narrative.

Further speaking, the drive member 11 is respectively provided with a ring groove 14 at both ends of the axial L1 of the receiving hole 12, and the radial dimension of the two ring grooves 14 is larger than the radial dimension of the first inner ring tooth portion 13. The two annular grooves 14 are respectively provided with a washer 15, and the radial dimension of the inner peripheral edge of each of the washer 15 is smaller than the radial dimension of the first inner ring tooth portion 13, so that the rotating seat 21 will not be in contact with the first inner ring tooth portion 13. The ring tooth portion 13 is in contact with only the inner periphery of the two washers 15, so as to avoid abrasion between the rotating seat 21 and the first inner ring tooth portion 13, and to stabilize the rotating seat 21 to prevent the rotating seat 21 from facing each other. The main body 1 shakes, the rotating seat 21 is rotatably arranged in the receiving hole 12 along the axial direction L1 and one end is provided with a driving part 23, and the driving part 23 is used for assembly with a locking member (such as a nut, a screw, a bolt) wait).

In this embodiment, the driving head for the power ratchet wrench is used for a power ratchet wrench 9, the power ratchet wrench 9 includes a housing 91, and the housing 91 is provided with a transmission member 92, and the drive member 11 and the transmission member 92, driven by the transmission part 92 to make the driving part 11 swing back and forth relative to the main body 1.

Furthermore, the first locking part 41 is a second inner ring tooth part 43, and the second inner ring tooth part 43 is fixed on the body 1. When the switching part 3 is in the locked position, the switching part 3 The outer peripheral wall radially L2 pushes the second locking portion 42 against the second inner ring tooth portion 43 , so that the rotating seat 21 cannot rotate relative to the main body 11 .

Preferably, the rotating mechanism 2 includes a second ratchet member 51 pivotally mounted on the rotating base 21, and the second ratchet member 51 bounces against the second inner ring in the radial direction L2 Teeth 43 . The rotating mechanism 2 further includes a second elastic member 52, and the opposite ends of the second elastic member 52 are respectively elastic against the switching member 3 and the second ratchet member 51, so that the second ratchet member 51 normally pushes against the second inner ring tooth portion 43, and by turning the switching member 3, the second resilient member 52 pushes against the second ratchet member 51 to swing, so that the second ratchet member Both ends of 51 are selectively meshed with the second inner ring tooth portion 43 . In this way, when the switching member 3 is at the first position, the left end of the second ratchet member 51 is engaged with the second inner ring tooth portion 43 (as shown in FIG. 6 ), and the rotating seat 21 rotates counterclockwise. The second ratchet member 51 will jump off the second inner ring tooth portion 43 when rotating in the same direction, and the rotating seat 21 cannot rotate clockwise relative to the body 1, so as to avoid the rotating seat 21 from rotating, so it can ensure The driving member 11 cannot drive the rotating seat 21 to rotate in the clockwise direction; when the switching member 3 is in the second position, the right end of the second ratchet member 51 is engaged with the second inner ring tooth portion 43 ( As shown in Figure 10), when the rotating seat 21 rotates clockwise, the second ratchet member 51 will jump off the second inner ring tooth portion 43, and the rotating seat 21 cannot move counterclockwise relative to the body 1 rotation to prevent the rotating base 21 from rotating, so it can be more ensured that the driving member 11 cannot drive the rotating base 21 to rotate in the counterclockwise direction. This structure has strong resistance to prevent the rotating base 21 from rotating.

In this embodiment, the switching member 3 is provided with a groove 32 in the radial direction L2. When the switching member 3 is in the release position, the groove 32 corresponds to the second locking portion 42, and the second locking portion 42 When one end is inserted into the groove 32, the second clamping portion 42 does not abut against the first clamping portion 41; when the switching member 3 is in the locking position, the groove 32 does not correspond to the second clamping portion 42 , the switching member 3 pushes the second locking portion 42 against the first locking portion 41 in the radial direction L2.

The present invention also includes a first elastic member 24, which bounces between the second clamping portion 42 and the rotating seat 21, and the second clamping portion 42 has a tendency to bounce toward the switching member 3 so that when the switching member 3 is at the release position, one end of the second locking portion 42 is inserted into the groove 32 .

Wherein, the rotating base 21 is perforated with a perforation 25 in the radial direction L2, the perforation 25 includes a large diameter section 251 and a small diameter section 252, the small diameter section 252 is located at the end of the large diameter section 251 away from the switching member 3, The second clamping portion 42 is movably installed in the through hole 25 , and the second clamping portion 42 is provided with a head 421 with a larger diameter toward the end of the switching member 3 , and one end of the first elastic member 24 bounces against the The end surface of the small-diameter section 252 faces the large-diameter section 251 , and the other end springs against the head 421 , so that the head 421 springs against the switching member 3 . In this embodiment, a second elastic member 33 is further included, and the second elastic member 33 bounces between the rotating base 21 and the switching member 3 so that the switching member 3 normally bounces toward the release position.

1: Ontology 101: Piercing holes 11: Driver 12: Hole 13: The first inner ring gear 14: ring groove 15: Gasket 2: Turning mechanism 21: Rotating seat 22: The first ratchet piece 23: Drive Department 24: The first elastic member 25: perforation 251: large diameter section 252: small diameter section 3: switch parts 31: The first bullet arrives 32: Groove 33: Second elastic member 4: Lock structure 41: The first card department 42: The second card department 421: head 43: The second inner ring gear 51: Second ratchet piece 52: The second bounce piece 9: Power ratchet wrench 91: Shell 92: Transmission parts L1: Axial L2: Radial

Fig. 1 is a perspective view of a preferred embodiment of the invention. Fig. 2 is an exploded view of a preferred embodiment of the invention. Fig. 3 is a partial exploded view of a preferred embodiment of the invention. Fig. 4 is a side sectional view of a preferred embodiment of the invention. Fig. 5 is a top sectional view of a preferred embodiment of the invention. Fig. 6 is another top sectional view of a preferred embodiment of the invention. Fig. 7 and Fig. 8 are front view operation sectional views of a preferred embodiment of the invention. FIG. 9 is a schematic diagram of the operation of FIG. 5 . Fig. 10 is a schematic diagram of the action of the second card part in a preferred embodiment of the present invention.

1: Ontology

11: Driver

23: Drive Department

3: switch parts

9: Power ratchet wrench

91: Shell

Claims (10)

A drive head for a power rotary tool, comprising: A body defining an axial direction and a radial direction not parallel to the axial direction, and the body defines a through hole along the axial direction; A rotating mechanism, including a rotating seat, the rotating seat is rotatably arranged in the piercing hole along the axial direction; a switching element, which is assembled with the rotating seat along the axial direction; and A locking structure, including a first locking portion and a second locking portion, the first locking portion is arranged on the body, and the second locking portion is radially movable on the rotating seat; Wherein, the switching member can selectively move in a release position and a locking position along the axial direction. When the switching member is in the release position, the switching member does not radially push against the second locking portion and the first locking portion. The card parts are locked against each other, and the rotating seat can rotate relative to the body; when the switching member is at the locking position, the switching member radially pushes against the second card part and is locked against the first card part, and the rotating seat is Cannot rotate relative to the body. The driving head for a power rotary tool as described in Claim 1, wherein the body is further provided with a driving member, the driving member swings back and forth relative to the main body, the driving member encloses a cavity and includes one of the surrounding holes The first inner ring tooth part, the rotating mechanism includes a first ratchet part, the first ratchet part is pivotally arranged on the rotating seat, and the switching part is further provided with a first spring-resisting part, the first spring-resisting part springs Against the first ratchet member, by turning the switching member, the first resilient member can be pushed against the first ratchet member to swing, so that the two ends of the first ratchet member are selectively aligned with the second ratchet member. An inner ring gear meshes. The driving bit for power rotary tools as described in claim 2, wherein the driving member is respectively provided with an annular groove at both axial ends of the cavity, and the radial dimension of the two annular grooves is larger than that of the first inner ring tooth portion The radial dimension of the two annular grooves is respectively accommodated with a washer, and the radial dimension of the inner peripheral edge of each of the washer is smaller than the radial dimension of the first inner ring tooth portion, and the rotating seat is rotatably arranged on the One end of the cavity is provided with a driving part. The drive head for a power rotary tool as described in claim 2, wherein the drive head for a power rotary tool is used for a power ratchet wrench, the power ratchet wrench includes a housing, the housing is provided with a transmission member, and the drive The driving part is assembled with the transmission part, and driven by the transmission part, the driving part swings back and forth relative to the body. The drive head for a power rotary tool as described in claim 1, wherein the first locking part is a second inner ring tooth part, and the second inner ring tooth part is fixed on the body. position, the outer peripheral wall of the switching member radially pushes against the second locking portion and is locked against the second inner ring tooth portion. The driving head for a power rotary tool as described in claim 5, wherein the rotating mechanism includes a second ratchet member pivotally mounted on the rotating seat, and the second ratchet member radially springs against on the second inner ring tooth. The driving head for a power rotary tool as described in claim 6, wherein the rotating mechanism further includes a second elastic member, and the opposite ends of the second elastic member are respectively elastic against the switching member and the second ratchet. Tooth piece, so that the second ratchet piece is normally pushed against the second inner ring tooth part, and the second springy piece can be pushed against the second ratchet piece to swing by turning the switching piece, so that Two ends of the second ratchet member are selectively engaged with the second inner ring tooth portion. The drive head for a power rotary tool as described in Claim 1, wherein the radial ring of the switch member is provided with a groove, and when the switch member is at the release position, the groove corresponds to the second clamping portion, and the second clamping portion When one end of the two clamping parts is inserted into the groove, the second clamping part does not abut against the first clamping part; when the switch is at the locking position, the groove does not correspond to the second clamping part, The switching member radially pushes against the second locking portion and is locked against the first locking portion. The driving head for a power rotary tool according to claim 1, further comprising a first elastic member, the first elastic member bounces between the second clamping portion and the rotating seat, and the second clamping portion has Tendency to bounce towards the switch. The drive bit for a power rotary tool as described in Claim 9, wherein the rotary base is radially perforated with a perforation, and the perforation includes a large diameter section and a small diameter section, and the small diameter section is located away from the large diameter section. One end of the switching member, the second clamping portion is movably installed in the through hole, the second clamping portion is provided with a head with a larger diameter towards the end of the switching member, and one end of the first elastic member bounces against the The small-diameter section faces the end face of the large-diameter section, and the other end bounces against the head.

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