Tool handle allowing for replacement of tool component

Abstract

Disclosed in the present utility model is a tool handle allowing for replacement of a tool component. The rear end of a tool component is fitted to a pivot at the right end of a handle body via a shaft hole; the back of the handle body is provided with a limiting mechanism comprising a first limiting part; the rear end of the tool component is provided with a second limiting part; the pivot is a D-shaped shaft, the outer contour thereof comprising a plane and a curved surface which are connected to each other; an end portion of the pivot is inserted into a D-shaped assembly hole provided in the handle body so as to be fixed; the shaft hole is provided with a notch, the width of the notch being less than the inner diameter of the shaft hole; the end portion of the pivot is connected to a rotating component having a pushing part; when the rotating component rotates counterclockwise, the pushing part can drive the tool component to be deployed outwards from the handle body; when the rotating component rotates clockwise, the first limiting part can be lifted to disengage from the second limiting part and the first limiting part can be lifted to enable the tool component to rotate to a position where the edge of the notch is parallel to the plane of the pivot so as to disengage from the pivot. The present utility model enables replacement of the tool component, and, under the cooperation of the limiting mechanism and the pivot, accidental detachment of the tool component can be prevented when the tool component is folded and deployed.

Description

Tool handle with replaceable tool parts Technical Field

[0001] The utility model relates to the field of hardware tools, and more specifically, to a tool handle which can facilitate the replacement of a head tool piece. Background Art

[0002] Existing knives and multi-function tools generally have tool parts fixed on the handle, or the tool parts can be folded and placed in the storage slot. However, if multiple tools are needed at the same time, it is inconvenient to carry a large number of tools. There are also some tool handles with replaceable tool parts on the market, but there are problems such as the cumbersome process of replacing tool parts, unstable fixation of tool parts, and a limited number of applicable tool types.

[0003] For example, the Chinese utility model patent for a folding knife with easy blade replacement, with authorization announcement number CN218614195U, includes a handle, one end of the handle is rotatably connected to a blade holder, the blade holder can be rotated into the handle, a blade mounting position is provided in the blade holder, the opening of the blade mounting position faces away from the rotating end of the blade holder; a blade, the blade includes a blade body and a mounting portion connected to the blade body, the mounting portion is installed in the blade mounting position, and the mounting portion is provided with a barb portion , a barb groove for accommodating the barb portion is provided in the blade mounting position; a locking mechanism is movably provided on the blade holder, and the locking mechanism can fall into the blade mounting position and abut against the mounting portion so that the mounting portion is limited in the blade mounting position, or detach from the mounting portion so that the blade can be taken out of the blade mounting position; a through hole is provided on the blade holder that runs from one side of the blade holder to the other side, the locking mechanism is installed in the through hole and can move in the through hole, and a part of the through hole is connected to the blade mounting position.

[0004] In the technical solution disclosed in the above patent document, the replaceable blade is installed on the blade holder and fixed by a locking mechanism, but the fixation is unstable and easy to shake. In addition, if the above technical solution is to be expanded into a knife handle to pivotally connect the blade and other tool parts at the same time, each tool part requires a device similar to the blade holder to connect and fix it, which has a complex structure and high cost.

[0005] Summary of the Invention

[0006] The purpose of the invention of the utility model is to solve the above-mentioned technical problems and to provide a tool handle with replaceable tool parts, which is suitable for pivotally connecting multiple tool parts at the same time, has a stable connection between the tool parts and the handle, and is simple and convenient to replace the tool parts.

[0007] The utility model is achieved through the following technical solutions.

[0008] The utility model provides a tool handle with a replaceable tool part, comprising a handle body, a pivot and a tool part, wherein the pivot is assembled at the right end of the handle body, the rear end of the tool part is provided with an axial hole and is assembled to the pivot through the axial hole, the tool part can be rotated relative to the handle body to a first position and unfolded to a second position with the pivot as a rotating axis, the handle body is provided with a receiving groove for receiving the tool part when the tool part is in the first position, the back of the handle body is provided with a limiting mechanism, the limiting mechanism comprises a first limiting part, the rear end of the tool part is provided with a second limiting part, when the tool part is in the second position, the first limiting part cooperates with the second limiting part to limit the rotation of the tool part, the pivot is a D-shaped shaft, the outer contour of which comprises a connected plane and an arc surface, the end of the pivot is inserted into the handle body provided with The D-shaped assembly hole is fixed to the handle body, the shaft hole is provided with a notch and the width of the notch is smaller than the inner diameter of the shaft hole, the outer diameter of the arc surface of the pivot matches the inner diameter of the shaft hole, and the distance from the plane of the pivot to the arc surface matches the width of the notch. The end of the pivot is rotatably connected to a rotating part, and the inner surface of the rotating part extends a pushing part toward the storage groove. When the rotating part rotates counterclockwise, the pushing part can drive the tool part to expand from the first position toward the outside of the storage groove. When the rotating part rotates clockwise, the pushing part can drive the limiting mechanism to lift the first limiting part to the third position to disengage from the second limiting part, and can drive the limiting mechanism to lift the first limiting mechanism to the fourth position, so that the tool part can rotate counterclockwise from the second position until the edge of the notch is parallel to the plane of the pivot and thus disengage from the pivot.

[0009] In the above technical solution, when the tool part rotates between the first position and the second position, the tool part cannot be separated from the pivot, and the use effect is the same as that of the tool handle of a traditional non-replaceable tool part; when the tool part is in the first position, the rotating part is rotated counterclockwise, and the pushing part can push the tool part out of the storage slot from the first position for a distance, which can facilitate the tool part to be opened with fingers; when the tool part is in the second position, the rotating part is rotated clockwise, and the pushing part can drive the limiting mechanism to lift the first limiting part to the third position and disengage from the second limiting part, so that the tool part can be folded back to the first position from the second position; when the tool part needs to be replaced, when the first limiting part is in the third position, continue to rotate the rotating part clockwise to lift the first limiting part to the fourth position, and the tool part can only be rotated counterclockwise from the second position until the edge of the notch is parallel to the plane of the pivot, so that the tool part can be separated from the pivot for replacement. This can avoid accidental detachment of the tool part during normal use, and has high safety.

[0010] Preferably, the limiting mechanism includes a limiting member, a pin, and a torsion spring. The limiting member is provided with a through hole near the left end thereof and is assembled to the pin through the through hole. The pin is fixed to the handle body. The torsion spring is sleeved on the pin and one end thereof abuts against the rear portion of the limiting member, while the other end is fixed to the handle body. The first limiting portion is provided at the right end of the limiting member. In this technical solution, the limiting member is rotatably connected to the handle body via the pin, similar to a lever structure. After the lifting force of the pushing portion on the limiting member is cancelled, the limiting member can automatically reset under the elastic force of the torsion spring, maintaining the pressing force of the first limiting member on the rear end of the tool part, so that the tool part has a certain damping force when rotating and will not automatically rotate due to gravity.

[0011] Preferably, a lifting portion is provided on the lower surface of the limiting member facing the pushing portion, and the lifting portion is arranged between the pin and the first limiting portion. The right side of the lifting portion is connected to a stopping portion through a transition arc surface. When the rotating member rotates until the pushing portion is located on the right side of the stopping portion, the stopping portion and the pushing portion interfere with each other to maintain the current state of the rotating member. When the tool is moved to the right side of the stopper through the top of the locking portion, the limit member is lifted to the fourth position and the locking portion and the pushing portion are in contact with each other to maintain this state, so that the tool can be easily rotated to the position where the edge of the notch is parallel to the plane of the pivot, so that it can be separated from the pivot for replacement. After the tool is replaced, the rotating member is rotated counterclockwise so that the pushing member is forced to pass through the top of the locking portion and reach the left side of the locking portion, and the limit member returns to the third position. At this time, the tool cannot be rotated to the position where the edge of the notch is parallel to the plane of the pivot. At this time, you can choose to release the force applied to the rotating member so that the first limit member cooperates with the second limit member again to maintain the second position state of the tool, or you can fold the tool toward the first position and then release the force applied to the rotating member so that the limit member automatically resets.

[0012] Preferably, the upper surface of the pushing portion facing the limiter and the surface of the locking portion are both configured to be cambered, so that the pushing portion can more easily pass over the top of the locking portion to the right side of the locking portion, or return to the left side of the locking portion, which is more labor-saving during operation.

[0013] Preferably, the handle body is provided with a limiting pin between the limiting member and the rear end of the tool member, the limiting pin being located between the locking portion of the limiting member and the first limiting portion, the contour surface of the rear end of the tool member being configured as an arc surface with the axis of the pivot as the center, and the limiting pin cooperating with the contour surface can limit the deviation of the tool member from the pivot during rotation. In this technical solution, because the pivot is a D-shaped axis, there is a gap between the axis hole and the outer contour of the pivot when the tool member rotates. Relying solely on the first limiting portion of the limiting member to contact and compress the contour surface of the rear end of the tool member requires a relatively high pressing force of the limiting member, which increases the resistance force during rotation of the tool member and affects the feel of the tool member. If the pressing force of the limiting member on the rear end of the tool member is too low, the tool member may deviate from the pivot during rotation, affecting the folding and unfolding operation. By adding a limiting pin to cooperate with the contour surface of the rear end of the tool member, the dual restriction of the limiting member and the limiting pin can reduce the setting requirements for the limiting member's pressing force, and the tool member can rotate more stably and more labor-savingly against the pivot.

[0014] Preferably, the handle body comprises an inner handle piece, an outer handle piece, and a connecting piece. The inner handle pieces are two in number and are spaced apart in parallel and connected by a connecting piece. A D-shaped assembly hole is provided at the right end of the inner handle piece. The outer handle pieces are two in number and are disposed outside the two inner handle pieces, respectively. The right end of the outer handle piece is connected and fixed to the inner handle piece by a screw axially threaded with the end of the pivot shaft. The left ends of the inner and outer handle pieces are connected and fixed by a threaded screw. The handle body adopts a split design to facilitate assembly of the various components.

[0015] Preferably, the rotating member is disposed between the inner and outer handles, with a mounting hole provided at the right end of the rotating member and fitted over the end of the pivot shaft through the hole. The inner handle is provided with a second arc-shaped avoidance groove at a position corresponding to the push portion. This can limit and guide the displacement of the push portion, thereby preventing misoperation.

[0016] Preferably, the outer surface of the left end of the rotating member is provided with a toggle portion protruding outward from the outer surface, and the outer handle piece is provided with an arc-shaped first avoidance groove at a position corresponding to the toggle portion. In this way, it is convenient for the user to operate the rotating member from the outside of the handle body.

[0017] Preferably, the inner diameter of the assembly hole is larger than the outer diameter of the arc surface of the pivot, and a bearing is provided in the transfer hole and is sleeved on the end of the pivot, so that the rotating part rotates more smoothly.

[0018] Preferably, a third limiting portion is provided at the rear end of the tool member, and when the tool member is in the first position, the first limiting portion cooperates with the third limiting portion to limit the rotation of the tool member. In this way, when the tool member is in the first position, it will not be opened by gravity or slight collision force, which improves safety.

[0019] The advantages of the present invention are that when the tool part is rotated between the first position and the second position for normal folding and unfolding, the tool part cannot be separated from the pivot with the cooperation of the limiting mechanism and the pivot, and the safety is high; when the tool part needs to be replaced, it is only necessary to continue to rotate the rotating part clockwise when the first limiting part is in the third position to lift the first limiting part to the fourth position, and the tool part can be separated from the pivot for replacement; with the cooperation of the rotating part, the first limiting part can be maintained in the fourth position, and the tool part replacement operation is convenient and fast; multiple tool parts can be axially installed side by side on the pivot, and the tool parts are easy to replace and have rich functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is a schematic diagram of the exploded structure of the present invention.

[0021] FIG2 is a schematic diagram of the assembled structure of the utility model.

[0022] FIG3 is a schematic structural diagram of the tool of the present invention when the tool part with the handle body omitted is in the first position.

[0023] FIG4 is a schematic structural diagram of the pivot of the present invention.

[0024] FIG5 is a schematic structural diagram of the utility model in which the tool piece is a blade.

[0025] FIG6 is a schematic structural diagram of the connection between the rotating member and the pivot shaft of the present invention.

[0026] FIG7 is a schematic structural diagram of the present invention when the rotating member omitting the handle body rotates counterclockwise to drive the tool member out of the first position.

[0027] FIG8 is a schematic structural diagram of the tool component of the present invention with the handle body omitted when the tool component is in the second position.

[0028] FIG9 is a schematic structural diagram of the present invention when the first limiting portion of the handle body is omitted and raised to the third position.

[0029] FIG10 is a schematic structural diagram of the present invention when the first limiting portion of the handle body is omitted and raised to the fourth position.

[0030] FIG11 is a schematic structural diagram of the present invention when the first limiting portion of the handle body is omitted and the tool part is lifted to the fourth position and rotated to be detachable from the pivot.

[0031] FIG12 is a structural diagram 1 of the limiting mechanism of the present invention.

[0032] FIG13 is a second structural diagram of the limiting mechanism of the present invention.

[0033] FIG14 is a schematic structural diagram of Example 2 of the present utility model.

[0034] FIG15 is a schematic structural diagram of Example 3 of the present utility model.

[0035] FIG16 is a schematic structural diagram of the tool part of Example 4 of the present utility model when it is located in the first position.

[0036] FIG17 is a schematic structural diagram of a tool part in Example 4 of the present utility model located between a first position and a second position. DETAILED DESCRIPTION

[0037] The drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate the embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent actual product dimensions. Those skilled in the art will understand that some well-known structures and their descriptions may be omitted from the drawings. The positional relationships depicted in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0038] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0039] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0040] Example 1

[0041] The utility model provides a tool handle with a replaceable tool part, as shown in Figures 1 and 2, comprising a handle body 1, a pivot 2 and a tool part 3, the pivot 2 being assembled at the right end of the handle body 1, the rear end of the tool part 3 being provided with an axial hole 31 and being assembled to the pivot 2 through the axial hole 31, in this embodiment, the tool part 3 is a blade, the handle body 1 comprising an inner handle piece 11, an outer handle piece 13 and a connecting piece 12, the number of the inner handle pieces 11 being two, the two inner handle pieces 11 being arranged in parallel and spaced apart and connected by the connecting piece 12, the outer handle piece 13 being provided with an inner handle piece 11 and a connecting piece 12, There are two pieces of 3, and the two outer handle pieces 13 are respectively arranged outside the two inner handle pieces 11. The right end of the outer handle piece 13 is connected and fixed to the inner handle piece 11 by a screw 4 which is axially threadedly connected to the end of the pivot 2. The left ends of the inner handle piece 11 and the outer handle piece 13 are connected and fixed by a parent-child nail 5. The space between the two inner handle pieces 11 is a storage groove 14 for storing the tool part 3. The tool part 3 can be rotated relative to the handle body 1 with the pivot 2 as the rotating axis to be folded to a first position where it is stored in the storage groove 14 and unfolded to a second position which is 180 degrees from the first position.

[0042] In this embodiment, as shown in Figures 1 and 3, a limiting mechanism 6 is provided on the back of the handle body 1, and the limiting mechanism 6 includes a first limiting portion 611. The rear end of the tool part 3 is provided with a second limiting portion 33 and a third limiting portion 34. The third limiting portion 34 is a relatively shallow bayonet. When the tool part 3 is in the first position, the first limiting portion 611 cooperates with the third limiting portion 34 to limit the rotation and expansion of the tool part 3, thereby preventing the tool part 3 from accidentally expanding due to gravity or a small collision force, thereby improving safety; the second limiting portion 33 is a relatively deep bayonet. When the tool part 3 is in the second position, the first limiting portion 611 cooperates with the second limiting portion 33 to limit the rotation of the tool part.

[0043] In this embodiment, as shown in Figure 12, the limiting mechanism 6 includes a limiting member 61, a pin 62 and a torsion spring 63. The limiting member 61 is provided with a through hole near the left end and is assembled to the pin 62 through the through hole. The two ends of the pin 62 are respectively inserted into the jacks provided in the two inner handle pieces 11 and connected to the inner handle pieces 11. The torsion spring 63 is sleeved on the pin 62 and one end thereof is against the rear part of the limiting member 61, and the other end is fixed to the inner handle piece 11. The first limiting portion 611 is provided at the right end of the limiting member 61, which is a hook bent toward the tool part 3 relative to the limiting member 61.

[0044] As a further improvement, as shown in FIG. 13 , in order to facilitate the placement of the torsion spring 63 , the limiting member 61 is provided with a sunken portion 614 at a position corresponding to the torsion spring 63 for placing the torsion spring 63 .

[0045] In this embodiment, as shown in Figures 1, 4, and 5, the pivot 2 is a D-shaped shaft, and its outer contour includes a flat surface 21 and an arc surface 22 connected to each other. The end of the pivot 2 is inserted into the D-shaped assembly hole provided at the right end of the inner handle piece 11 and is connected and fixed to the two inner handle pieces 11. The shaft hole 31 of the tool piece 3 is provided with a notch 32, and the width of the notch 32 is smaller than the inner diameter of the shaft hole 31. An edge 321 of the notch 32 is tangent to the shaft hole, and the notch 32 faces the back of the tool piece 3. The outer diameter 221 of the arc surface of the pivot 2 matches the inner diameter of the shaft hole 31, and the distance 211 from the flat surface 21 of the pivot 2 to the arc surface 22 matches the width of the notch 32. As shown in Figures 1 and 6, the end of the pivot 2 is rotatably connected to a rotating member 7, and the inner surface of the rotating member 7 extends toward the receiving groove 14 with a pushing portion 71. In this embodiment, the rotating member 7 is a plate-like structure made of metal, and the outer surface of the left end of the rotating member 7 is provided with a toggle portion 72 protruding outward from the outer surface, and the outer handle piece 13 is provided with an arc-shaped first avoidance groove 131 at a position corresponding to the toggle portion 72. The rotating member 7 is arranged between the inner handle piece 11 and the outer handle piece 13, and an assembly hole 73 is provided at the right end of the rotating member 7 and is mounted on the end of the pivot 2 through the assembly hole 73. The inner handle piece 11 is provided with an arc-shaped second avoidance groove 111 at a position corresponding to the pushing portion 71.

[0046] As shown in Figure 7, when the operating rotating member 7 is rotated counterclockwise, the pushing portion 71 contacts the rear edge of the tool member 3, and can drive the tool member 3 to rotate from the first position toward the outside of the storage slot 14 to a small angle, so that it is convenient to pinch the tool member 3 with fingers to continue to unfold it; as shown in Figures 8 and 9, when the operating rotating member 7 is rotated clockwise, the pushing portion 71 contacts the lower surface of the limiting member 61, and can drive the first limiting portion 611 at the right end of the limiting member 61 to lift to the third position and disengage from the second limiting portion 33; as shown in Figures 9, 10 and 11, when the operating rotating member 7 continues to rotate clockwise at this position, the first limiting portion 611 at the right end of the limiting member 61 can continue to be lifted to the fourth position, so that the tool member 3 can rotate counterclockwise from the second position to the position where the edge of the notch 32 is parallel to the plane 21 of the pivot 2, thereby disengaging from the pivot 2 to replace the tool member 3.

[0047] As a further improvement, as shown in Figures 11 and 12, a lifting portion 612 is provided on the lower surface of the limiting member 61 facing the pushing portion. The lifting portion 612 is an inclined guide slope, and the height from the left end of the guide slope to the lower end surface of the first limiting member 611 is greater than the height from the right end of the guide slope to the lower end surface of the first limiting member 611. The lifting portion 612 is located between the pin 62 and the first limiting member 611. The right side of the lifting portion 612 is connected to a locking portion 613 via a transition arc surface. When the rotating member 7 rotates until the pushing portion 71 is located to the right of the locking portion 613, the locking portion 613 contacts the pushing portion 71 to maintain the current state of the rotating member 7. In this embodiment, in order to achieve the effect that the locking portion 613 and the pushing portion 71 can maintain the current state of the rotating member 7 by the interference between the locking portion 613 and the pushing portion 71, the upper surface of the pushing portion 71 facing the limiting member 61 and the surface of the locking portion 613 are both set to an arc shape, so that when the arc surface of the locking portion 613 is in conflict with the arc surface of the pushing portion 71 and is tangent, the centripetal force applied by the locking portion 613 to the pushing portion 71 is directed to the axis of the pivot 2, or the right position of the axis of the pivot 2. In this way, under the action of the second avoidance groove 111 and the limit, it can be ensured that the rotating member 7 will not rotate counterclockwise in the absence of other forces, thereby maintaining the current state of the rotating member 7.

[0048] As a further improvement, as shown in FIG6 , the inner diameter of the assembly hole is larger than the outer diameter of the arc surface of the pivot, and a bearing is provided in the transfer hole and is sleeved on the end of the pivot, which can improve the smoothness of the rotation of the rotating part.

[0049] The utility model can be used independently, or a pliers head or a shearing piece can be pivotally connected to the left end of the handle body 1 through a parent-child nail 5, and two handle bodies 1 and two cross-hinged pliers heads can be combined into a multifunctional tool pliers, or two handle bodies 1 and two cross-hinged shearing pieces can be combined into a multifunctional tool shears.

[0050] Example 2

[0051] This embodiment is similar in structure to the embodiment 1, except that, as shown in FIG14 , the tool 3 is a cross bit.

[0052] Example 3

[0053] This embodiment is similar in structure to the embodiment 1, except that, as shown in FIG15 , a plurality of tool parts 3 are axially mounted side by side on the pivot 2 , and these tool parts 3 are respectively a large blade, a push knife, a cross screwdriver head, and a small blade when unfolded from left to right.

[0054] Example 4

[0055] This embodiment is similar in structure to the first embodiment, except that, as shown in Figures 16 and 17, a stopper pin 8 is provided between the stopper 6 and the rear end of the tool member 3 on the handle body 1. The stopper pin 8 is located between the retaining portion 613 and the first stopper 611 of the stopper 6, and the ends of the stopper pin 8 are connected to the two inner handle pieces 11. The contour surface 35 at the rear end of the tool member 3 is configured as an arc surface centered on the axis of the pivot 2, so that the distance between the contour surface 35 and the stopper pin 8 remains constant during rotation of the tool member 3. To ensure that the stopper pin 8 cooperates with the contour surface 35 to prevent the tool member 3 from deviating from the pivot 2 during rotation, that is, to ensure that the tool member 3 does not deviate due to the gap between the shaft hole 31 and the outer contour of the pivot 2 during rotation, the distance between the stopper pin 8 and the contour surface 35 needs to be relatively small, preferably almost contacting. The lower surface of the limiting member 6 is provided with an arc-shaped recess 615 cooperating with the limiting pin 8 at the position corresponding to the limiting pin 8. The function of the arc-shaped recess 615 is mainly to enable the limiting member 6 to avoid the limiting pin 8, so as to avoid the limiting pin 8 blocking the limiting member 6 and causing the first limiting portion 611 of the limiting member 6 to be unable to conflict with the contour surface 35 at the rear end of the tool part 3.

[0056] The above are only specific embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using the concept of the present invention fall within the scope of protection of the present invention.

Claims

1. A tool handle with a replaceable tool piece, comprising a handle body (1), a pivot (2) and a tool piece (3), wherein the pivot (2) is mounted on the right end of the handle body (1), a rear end of the tool piece (3) is provided with an axial hole (31) and is mounted on the pivot (2) through the axial hole (31), the tool piece (3) can be rotated relative to the handle body (1) with the pivot (2) as a rotation axis to be folded to a first position and unfolded to a second position, the handle body (1) is provided with a storage groove (14) for storing the tool piece (3) when the tool piece (3) is located at the first position, and is characterized in that: The handle body (1) is provided with a limiting mechanism (6) on the back thereof, the limiting mechanism (6) comprising a first limiting portion (611), the rear end of the tool piece (3) being provided with a second limiting portion (33), when the tool piece (3) is located at the second position, the first limiting portion (611) cooperates with the second limiting portion (33) to limit the rotation of the tool piece (3), the pivot (2) being a D-shaped shaft, the outer contour of which comprises a plane (21) and an arc surface (22) connected to each other, the end of the pivot (2) being inserted into a D-shaped assembly hole provided on the handle body (1) and being fixed to the handle body (1), the shaft hole (31) being provided with a notch (32) and the width of the notch (32) being smaller than the inner diameter of the shaft hole (31), the outer diameter of the arc surface (22) of the pivot (2) matching the inner diameter of the shaft hole (31), the plane (21) of the pivot (2) to the arc surface (22) The distance (211) of the arc surface (22) matches the width of the notch (32); the end of the pivot (2) is rotatably connected to a rotating member (7); the inner surface of the rotating member (7) is provided with a pushing portion (71) extending toward the storage groove (14); when the rotating member (7) rotates counterclockwise, the pushing portion (71) can drive the tool member (3) to expand from the first position toward the outside of the storage groove (14); when the rotating member (7) rotates clockwise, the pushing portion (71) can drive the limiting mechanism (6) to lift the first limiting portion (611) to the third position to disengage from the second limiting portion (33); and can drive the limiting mechanism (6) to lift the first limiting mechanism (611) to the fourth position, so that the tool member (3) can rotate counterclockwise from the second position until the edge of the notch (32) is parallel to the plane (21) of the pivot (2), thereby disengaging from the pivot (2).

2. The tool handle of the replaceable tool part according to claim 1, characterized in that: The limiting mechanism (6) includes a limiting member (61), a pin (62) and a torsion spring (63); a through hole is provided at a portion of the limiting member (61) close to the left end and is assembled to the pin (63) through the through hole; the pin (63) is fixed to the handle body (1); the torsion spring (63) is sleeved on the pin (62) and one end of the torsion spring abuts against the rear portion of the limiting member (61) and the other end is fixed to the handle body (1); the first limiting portion (611) is provided at the right end of the limiting member (6).

3. The tool handle of the replaceable tool part according to claim 2, characterized in that: The lower surface of the limiting member (6) facing the pushing portion (71) is provided with a lifting portion (612), the lifting portion (612) is arranged between the pin (62) and the first limiting portion (611), the right side of the lifting portion (612) is connected with a locking portion (613) via a transition arc surface, and when the rotating member (7) rotates until the pushing portion (71) is located on the right side of the locking portion (613), the locking portion (613) and the pushing portion (71) are in contact with each other to maintain the state of the rotating member (7) at this time.

4. The tool handle of the replaceable tool part according to claim 3, characterized in that: The upper surface of the pushing portion (71) facing the limiting member (6) and the surface of the locking portion (613) are both arranged in an arc shape.

5. The tool handle of the replaceable tool part according to claim 4, characterized in that: The handle body (1) is provided with a limiting pin (8) between the limiting member (6) and the rear end of the tool member (3); the limiting pin (8) is located between the locking portion (613) of the limiting member (6) and the first limiting portion (611); the contour surface (35) at the rear end of the tool member (3) is arranged to be an arc surface with the axis of the pivot (2) as the center; the limiting pin (8) cooperates with the contour surface (35) to limit the deviation of the tool member (3) from the pivot (2) when rotating.

6. A tool handle with a replaceable tool part according to any one of claims 1 to 5, characterized in that: The handle body (1) comprises an inner handle piece (11), an outer handle piece (13) and a connecting piece (12). The number of the inner handle pieces (11) is two, and the two inner handle pieces (11) are arranged in parallel and spaced apart and connected by the connecting piece (12). A D-shaped assembly hole is arranged at the right end of the inner handle piece 11. The number of the outer handle pieces 13 is two, and the two outer handle pieces 13 are respectively arranged outside the two inner handle pieces 11. The right end of the outer handle piece 13 is connected and fixed to the inner handle piece 11 by a screw 4 axially threadedly connected to the end of the pivot 2, and the left ends of the inner handle piece 11 and the outer handle piece 13 are connected and fixed by a threaded nail 5.

7. The tool handle of the replaceable tool part according to claim 6, characterized in that: The rotating member (7) is arranged between the inner handle piece (11) and the outer handle piece (13); a mounting hole (73) is arranged at the right end of the rotating member (7) and is mounted on the end of the pivot (2) through the mounting hole (73); and the inner handle piece (11) is provided with an arc-shaped second avoidance groove (111) at a position corresponding to the pushing portion (71).

8. The tool handle of claim 7, wherein: The outer surface of the left end of the rotating member (7) is provided with a toggle portion (72) protruding outward from the outer surface, and the outer handle piece (13) is provided with an arc-shaped first avoidance groove (131) at a position corresponding to the toggle portion (72).

9. The tool handle of claim 8, wherein: The inner diameter of the assembly hole (73) is larger than the outer diameter of the arc surface of the pivot (2), and a bearing (41) sleeved on the end of the pivot (2) is arranged in the transfer hole (73).

10. The tool handle of the replaceable tool part according to claim 1, characterized in that: A third limiting portion (34) is provided at the rear end of the tool part (3); when the tool part (3) is located at the first position, the first limiting portion (611) cooperates with the third limiting portion (34) to limit the rotation of the tool part (3).

Images