An auxiliary handle for an impact tool and an impact tool

Abstract

The present invention provides an auxiliary handle for an impact tool and an impact tool. The auxiliary handle includes: a housing assembly, the housing assembly includes a first handle housing and a second handle housing that are movably connected to each other; an elastic limiting member, the elastic limiting member is connected to the mating end of the first handle housing, and an installation space for installing the impact tool is formed between the elastic limiting member and the mating end; an adjusting assembly, the adjusting assembly is connected to the inside of the housing assembly, and the adjusting assembly is connected to the elastic limiting member and the second handle housing; a caliper assembly, the caliper assembly is connected to the housing assembly; wherein, when the second handle housing is adjusted to move relative to the first handle housing, the installation diameter surrounded by the installation space increases or decreases. The present invention solves the technical problem that the diameter of the limiting sleeve in the auxiliary handle can only be adjusted to a smaller diameter, and it is difficult to increase the diameter, resulting in a reduction in the universality of the use of the auxiliary handle.

Description

Technical Field

[0001] The present invention relates to the technical field of impact tools, and more particularly, to an auxiliary handle for an impact tool and an impact tool. Background Art

[0002] Handheld power tools include various tools driven by a power source, which are configured to be held by an operator during use. Specifically, depending on the application of the tool being used, handheld power tools vary greatly in size, torque, and operating speed. To enhance the holding stability of the power tool by the operator during processing, an auxiliary handle is provided on the power tool.

[0003] Although auxiliary handles have been widely used on power tools, specifically, after a common auxiliary handle forms a stable cooperation relationship with a power tool, it is difficult for the operator to adjust the auxiliary handle again. For example, the connection relationship between the auxiliary handle and the power tool is a sleeved fit. Specifically, the auxiliary handle has a limit sleeve for cooperating with the output end, and the caliber size of the limit sleeve is adjusted according to the specific size of the output end with which it cooperates. Commonly, the caliber adjustment method of the limit sleeve is similar to the one-way tooth engagement in a wire harness structure, that is, the caliber can be reduced during the adjustment process, but it is difficult to increase the caliber. As a result, this adjustment method reduces the universality of the use of the auxiliary handle. Summary of the Invention

[0004] The present invention solves the technical problem that the caliber of the limit sleeve in the auxiliary handle can only be adjusted to a smaller caliber and it is difficult to increase the caliber, resulting in a reduction in the universality of the use of the auxiliary handle.

[0005] To solve the above problems, the present invention provides an auxiliary handle for an impact tool, comprising: a housing assembly, the housing assembly includes a first handle housing and a second handle housing that are movably connected to each other; an elastic limiting member, the elastic limiting member is connected to the mating end of the first handle housing, and an installation space for installing an impact tool is formed between the elastic limiting member and the mating end; an adjustment assembly, the adjustment assembly is connected to the inside of the housing assembly, and the adjustment assembly is connected to the elastic limiting member and the second handle housing; a caliper assembly, the caliper assembly is connected to the housing assembly; wherein, when the second handle housing moves relative to the first handle housing, the installation caliber surrounded by the installation space increases or decreases.

[0006] Compared with the prior art, the technical effect achieved by adopting this technical solution is: by adjusting the second handle shell to move relative to the first handle shell, the installation diameter is increased or decreased to tighten or loosen the output end of the impact tool, so that the auxiliary handle provided by this technical solution can be used for large-diameter or small-diameter impact tools, greatly improving the versatility of use. Combined with the matching of the auxiliary handle and the impact tool, when the output end and the auxiliary handle are pre-installed, after the auxiliary handle is adjusted to the installation position on the output end, the second handle shell is adjusted to reduce the installation diameter until the auxiliary handle is stably fastened to the installation position to complete the matching between the two; on the contrary, when it is necessary to disassemble it, it is only necessary to adjust the second handle shell in the opposite direction of the above-mentioned moving direction to increase the installation diameter so that the auxiliary handle can be smoothly removed from the output end. Therefore, it can be seen that the loading and unloading operation between the auxiliary handle and the output end is simple and reliable, which greatly improves the loading and unloading efficiency.

[0007] In one example of the present invention, the housing assembly is provided with a mounting seat for mounting a caliper assembly; the caliper assembly includes: a ruler connected to a matching hole provided on the mounting seat; and a toggle member movably connected to the mounting seat at a position corresponding to the ruler, so that the ruler is in a fixed state or a movable state relative to the mounting seat.

[0008] Compared with the prior art, the technical effect achieved by adopting this technical solution is that the scales arranged in sequence along the length direction of the ruler are arranged parallel to the direction of the axis of the output drill bit of the impact tool. In combination with the actual adjustment situation, when the operator applies force to the toggle member to separate it from the ruler, the ruler can be in an active state relative to the mounting seat, that is, the ruler can be moved in the matching hole, so that a processing distance is formed between the end of the ruler close to the end of the output drill bit and the output drill bit. Therefore, during the processing of the workpiece to be processed, the output drill bit contacts the workpiece to be processed before the ruler, until the ruler contacts the corresponding end face of the workpiece to be processed, indicating that the processing operation with a processing depth of the processing distance has been completed. During the adjustment of the processing distance, when the adjusted processing distance is maintained at the preset distance, the operator releases the force on the toggle member to make it return to the state of matching with the ruler. At this time, the ruler is in a fixed state relative to the mounting seat, thereby effectively avoiding the relative displacement of the ruler relative to the impact drill bit during the processing process and affecting the processing accuracy.

[0009] In one embodiment of the present invention, a mounting position for mounting a reset member is provided on a side of the toggle member facing the mounting seat; wherein a first extruded deformation amount of the reset member when the ruler is in a fixed state is smaller than a second extruded deformation amount when the ruler is in an active state.

[0010] Compared with the prior art, the technical effect achieved by adopting this technical solution is that the reset member can be a reset spring, so that the positional relationship of the toggle member relative to the ruler can be flexibly adjusted by means of the elastic force of the reset spring, thereby improving the adjustment efficiency. More specifically, in order to make the reset member form a stable thrust on the toggle member to ensure that the toggle member plays a stable limiting role on the ruler, a plurality of first limit teeth arranged at intervals from each other are provided on the end face of the toggle member opposite to the ruler, and correspondingly, a plurality of second limit teeth meshing with the plurality of first limit teeth are also provided on the ruler, so that when the plurality of first limit teeth mesh with the corresponding plurality of second limit teeth, the relative movement of the ruler relative to the matching hole is effectively limited, further ensuring the stability of the working distance.

[0011] In one embodiment of the present invention, when the toggle member and the mounting seat are rotationally connected, the ruler and the reset member are respectively located at both ends of the rotational connection between the toggle member and the mounting seat; or, when the toggle member and the mounting seat are slidingly connected, the toggle member is clamped between the ruler and the reset member, and the moving direction of the ruler relative to the mounting seat and the moving direction of the toggle member relative to the mounting seat form an angle or are vertically arranged.

[0012] Compared with the prior art, the technical effect achieved by adopting this technical solution is: no matter whether the toggle member and the mounting seat are in rotational cooperation or sliding cooperation, the adjustment method of cooperating with the reset member to realize the conversion of the ruler between the fixed state and the active state is simple and reliable.

[0013] In one example of the present invention, the adjustment assembly includes: an adjustment member, which is arranged in the accommodating cavity of the shell assembly, and one end of the adjustment member is connected to the elastic limit member, and the other end is movably connected to the matching part of the second handle shell; wherein, when the second handle shell is rotated, the length of the adjustment member extending into the second handle shell increases or decreases so that the elastic limit member tightens or loosens the impact tool accordingly.

[0014] In one example of the present invention, the elastic limiting member is provided with a limiting hole cooperating with the adjusting member; the adjusting member comprises: a limiting portion, which is arranged at a position of the limiting hole formed corresponding to the elastic limiting member away from the second handle shell; a connecting portion, one end of the connecting portion is connected to the limiting portion through the limiting hole, and the other end is screwed to the second handle shell.

[0015] Compared with the prior art, the technical effect achieved by adopting this technical solution is: for example, the connecting part can be a screw, and correspondingly, the mating part is a threaded part installed on the mating groove of the second handle shell, the threaded part has an internal thread, and the threaded part is fixedly installed in the mating groove, so that during the rotation of the second handle shell, relative rotation between the threaded part and the second handle shell is avoided, which leads to a reduction in the efficiency of adjusting the installation diameter.

[0016] In an example of the present invention, the adjusting assembly further includes: an elastic member, one end of the elastic member abuts against the limiting bottom plate in the accommodating cavity, and the other end clamps the corresponding part of the elastic limiting member with the adjusting member.

[0017] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: Specifically, the elastic member and the adjusting member cooperate with each other to apply a squeezing force to the corresponding part of the elastic limiting member, so as to ensure that the adjusting assembly can stably drive the elastic limiting member to move during the rotation of the second handle housing.

[0018] In an example of the present invention, it includes: a limiting assembly, the limiting assembly is arranged at the connection between the first handle housing and the second handle housing to enable the second handle housing to rotate around the first axis; wherein, the moving direction of the adjusting member extending into or out of the second handle housing is parallel to the direction where the first axis is located.

[0019] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The limiting assembly can improve the stability of the rotation of the second handle housing relative to the first handle housing and reduce the risk of the second handle housing deviating from the direction of the first axis during rotation.

[0020] On the other hand, the present invention also provides an impact tool, including: an output end, a connection position is arranged on the outer surface of the output end; an auxiliary handle as in any of the above examples, and the auxiliary handle is connected to the output end through the connection position.

[0021] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: It can achieve the corresponding technical effects in the technical solutions of any of the above auxiliary handles, which will not be elaborated here.

[0022] In an example of the present invention, at the position of the output end corresponding to the connection position, a plurality of first engaging members are arranged along the axis direction of its output shaft; the mating end is provided with at least one second engaging member that engages with at least one of the plurality of first engaging members; wherein, when the second engaging member engages with the first engaging member, the first handle housing is fixedly arranged relative to the output end.

[0023] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: Specifically, stop protrusions are provided at both ends of the first engaging member along the first axis direction. When the second engaging member cooperates with the corresponding first engaging member, the second engaging member is clamped between the two stop protrusions, thereby restricting the relative movement of the auxiliary handle along the first axis with respect to the output end; in addition, the cooperation between multiple first engaging members and multiple second engaging members restricts the relative rotation of the auxiliary handle around the first axis with respect to the output end. Thus, through the above cooperation, the auxiliary handle can be stably limited to the output end, so that during the use of the impact tool, the operator can achieve stable grasping of the impact tool by grasping the auxiliary handle and the switch handle, thereby improving the processing efficiency.

[0024] After adopting the technical solution of the present invention, the following technical effects can be achieved:

[0025] (1) By adjusting the relative movement of the second handle housing with respect to the first handle housing to increase or decrease the mounting aperture, the tight fit or relaxation of the output end of the impact tool can be achieved, so that the auxiliary handle provided by this technical solution can be used for impact tools with large or small apertures, greatly improving the universality of use. Considering the cooperation between the auxiliary handle and the impact tool, when pre-installing the output end and the auxiliary handle, after adjusting the installation position of the auxiliary handle on the output end, then adjust the second handle housing to reduce the mounting aperture until the auxiliary handle is stably fastened to the installation position to complete the cooperation between the two; on the contrary, when it is necessary to disassemble it, only need to adjust the second handle housing in the direction opposite to the above-mentioned movement direction to increase the mounting aperture so that the auxiliary handle can be smoothly removed from the output end. Therefore, it can be seen that the loading and unloading operation between the auxiliary handle and the output end is simple and reliable, greatly improving the loading and unloading efficiency;

[0026] (2) The limiting component can improve the stability of the relative rotation of the second handle housing with respect to the first handle housing, and reduce the risk of the second handle housing deviating from the first axis direction during rotation;

[0027] (3) Whether the dialing member and the mounting seat are in rotational cooperation or sliding cooperation, the adjustment method of its cooperation with the reset member to realize the conversion between the fixed state and the movable state of the measuring scale is simple and reliable. Description of the Drawings

[0028] Figure 1 It is a schematic structural diagram of an auxiliary handle of an impact tool provided in Embodiment 1 of the present invention.

[0029] Figure 2 It is Figure 1 The structural diagram from another perspective in

[0030] Figure 3 It isFigure 1 Schematic diagram of the structure after hiding the toggle member.

[0031] Figure 4 is Figure 3 Enlarged view of the F position in

[0032] Figure 5 is Figure 1 Schematic diagram of the structure of the toggle member in

[0033] Figure 6 is Figure 1 Schematic diagram of the structure of the first handle housing in

[0034] Figure 7 is Figure 6 Cross-sectional view from another perspective in

[0035] Figure 8 Schematic diagram of the connection relationship among the elastic limit member, the adjustment assembly and the second handle housing.

[0036] Figure 9 is Figure 2 Cross-sectional view in the A - A direction in

[0037] Figure 10 is Figure 9 Partial schematic diagram in

[0038] Figure 11 is Figure 9 Enlarged view of the B position in

[0039] Figure 12 is Figure 9 Enlarged view of the C position in

[0040] Figure 13 is Figure 9 Enlarged view of the D position in

[0041] Figure 14 is Figure 9 Enlarged view of the E position in

[0042] Figure 15 Schematic diagram of the connection between the output end of an impact tool and the auxiliary handle provided in the second embodiment of the present invention.

[0043] Figure 16 is Figure 15 Schematic diagram of the structure of the output end in

[0044] Figure 17 is Figure 15 Enlarged view of the H position in

[0045] Explanation of reference numerals:

[0046] 100 - Auxiliary handle; 101 - Installation space; 102 - First axis direction; 10 - First handle housing; 11 - Fitting end; 111 - Second engaging member; 112 - First guiding portion; 113 - Second guiding portion; 12 - Mounting seat; 121 - Fitting hole; 122 - Installation groove; 123 - Limiting space; 13 - Limiting bottom plate; 14 - First limiting cavity; 20 - Second handle housing; 21 - Fitting portion; 22 - Fitting groove; 30 - Elastic limiting member; 31 - Limiting hole; 32 - Limiting ring; 33 - Reinforcing portion; 40 - Adjusting assembly; 41 - Adjusting member; 411 - Limiting portion; 412 - Connecting portion; 42 - Elastic member; 50 - Caliper assembly; 51 - Measuring scale; 511 - Second limiting teeth; 52 - Pushing member; 521 - First limiting teeth; 522 - First limiting protrusion; 53 - Reset member; 60 - Limiting assembly; 61 - First limiting member; 62 - Second limiting member; 63 - Third limiting annular protrusion; 64 - Fourth limiting annular protrusion;

[0047] 200 - Output end; 201 - Output shaft; 210 - First engaging member; 220 - Stop protrusion. Detailed implementation manners

[0048] To make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description will be given to the specific embodiments of the present invention with reference to the accompanying drawings.

[0049] Embodiment 1:

[0050] Refer to Figure 1 , which is a schematic structural diagram of an auxiliary handle 100 of an impact tool provided by Embodiment 1 of the present invention. Combining Figures 2 - 17 , the auxiliary handle 100 includes, for example, a housing assembly, an elastic limiting member 30, an adjusting assembly 40, and a caliper assembly 50. Specifically, the housing assembly includes a first handle housing 10 and a second handle housing 20 that are movably connected to each other; the elastic limiting member 30 is connected to the fitting end 11 of the first handle housing 10, and an installation space 101 for installing the impact tool is formed between the elastic limiting member 30 and the fitting end 11; the adjusting assembly 40 is connected to the inside of the housing assembly, and the adjusting assembly 40 is connected to the elastic limiting member 30 and the second handle housing 20; the caliper assembly 50 is connected to the housing assembly; wherein, when the second handle housing 20 moves relative to the first handle housing 10, the installation diameter surrounded by the installation space 101 increases or decreases.

[0051] In a specific example, the impact tool is, for example, an impact drill, an impact wrench, or an impact screwdriver, etc. During actual use, in order to enhance the holding stability of the impact tool, it is often necessary to hold it with both hands. For example, one hand is placed at the switch handle of the impact tool, and the other hand is placed at the output end 200 of the impact tool. Since the outer shell diameter corresponding to the output end 200 is relatively large, it causes the operator to be unable to form a stable gripping posture at this part of the output end 200, that is, when the impact tool is performing an impact operation, it is easy for the gripping position at this place to move. Therefore, by providing an auxiliary handle 100 on the outer shell of the impact tool corresponding to the output end 200, the operator's gripping of the auxiliary handle 100 and the switch handle enhances the stable operation of the impact tool.

[0052] However, although the auxiliary handle 100 has been widely used on power tools, specifically, after the common auxiliary handle 100 forms a stable cooperation relationship with the power tool, it is difficult for the operator to adjust the auxiliary handle 100. For example, the connection relationship between the auxiliary handle 100 and the power tool is a sleeved fit. Specifically, the auxiliary handle 100 has a limiting sleeve for cooperating with the output end 200, and the diameter of the limiting sleeve is adjusted according to the specific size of the output end 200 with which it cooperates. Commonly, the diameter adjustment method of the limiting sleeve is similar to the one-way tooth engagement in the wire harness structure, that is, the diameter can be reduced during the adjustment process, but it is difficult to increase the diameter. Therefore, this adjustment method reduces the universality of the use of the auxiliary handle 100.

[0053] Therefore, combining the above specific content, in this technical solution, by adjusting the second handle housing 20 to move relative to the first handle housing 10 to increase or decrease the installation diameter to tighten or loosen the output end 200 of the impact tool, thereby enabling the auxiliary handle 100 provided by this technical solution to be used for impact tools with large or small diameters, greatly improving the universality of use. Considering the cooperation between the auxiliary handle 100 and the impact tool, when pre-installing the output end 200 and the auxiliary handle 100, after adjusting the auxiliary handle 100 to the installation position on the output end 200, then adjust the second handle housing 20 to reduce the installation diameter until the auxiliary handle 100 is stably fastened to the installation position to complete the cooperation between the two; on the contrary, when it needs to be disassembled, only need to adjust the second handle housing 20 in the direction opposite to the above-mentioned movement direction to increase the installation diameter so that the auxiliary handle 100 can be smoothly removed from the output end 200. Therefore, it can be seen that the loading and unloading operation between the auxiliary handle 100 and the output end 200 is simple and reliable, greatly improving the loading and unloading efficiency.

[0054] In combination with the above specific content, in another specific example, the processing degree of the workpiece to be processed by the impact tool can be adjusted through the caliper assembly 50. For example, the impact tool can be an impact drill, so the processing depth of the workpiece to be processed by the output drill bit can be adjusted by means of the coordination between the caliper assembly 50 and the output drill bit, thereby improving the processing efficiency.

[0055] Preferably, the housing assembly is provided with a mounting seat 12 for mounting the caliper assembly 50; the caliper assembly 50, for example, includes a ruler 51 and a toggle member 52. The ruler 51 is connected to a matching hole 121 provided on the mounting seat 12; the toggle member 52 is movably connected to the mounting seat 12 at a position corresponding to the ruler 51, so that the ruler 51 is in a fixed state or a movable state relative to the mounting seat 12.

[0056] For example, the scales arranged in sequence along the length direction of the ruler 51 are arranged parallel to the direction of the axis of the output drill bit of the impact tool. In combination with the actual adjustment situation, when the operator applies force to the toggle member 52 to separate it from the ruler 51, the ruler 51 can be in an active state relative to the mounting seat 12, that is, the ruler 51 can be moved in the matching hole 121, so that a processing distance is formed between the end of the ruler 51 close to the end of the output drill bit and the output drill bit. Therefore, during the processing of the workpiece to be processed, the output drill bit contacts the workpiece to be processed before the ruler 51, until the ruler 51 contacts the corresponding end face of the workpiece to be processed, indicating that the processing operation with a processing depth of the processing distance has been completed. During the adjustment of the processing distance, when the adjusted processing distance is maintained at the preset distance, the operator releases the force on the toggle member 52 to return it to the state of matching with the ruler 51. At this time, the ruler 51 is in a fixed state relative to the mounting seat 12, thereby effectively avoiding the relative displacement of the ruler 51 relative to the impact drill bit during the processing process to affect the processing accuracy.

[0057] Preferably, a mounting position for mounting a reset member 53 is provided on the side of the toggle member 52 close to the mounting seat 12; wherein a first extrusion deformation amount of the reset member 53 when the ruler 51 is in a fixed state is smaller than a second extrusion deformation amount when the ruler 51 is in an active state.

[0058] Combined with the above specific content, in a specific example, the reset member 53 can be a reset spring. Thus, by virtue of the elastic force of the reset spring, the position relationship between the flexible adjustment toggle 52 and the scale 51 can be adjusted, improving the adjustment efficiency. More specifically, in order to enable the reset member 53 to form a stable thrust on the toggle 52 to ensure that the toggle 52 plays a stable limiting role on the scale 51, a plurality of first limit teeth 521 arranged at intervals are provided on the end face of the toggle 52 opposite to the scale 51. Correspondingly, a plurality of second limit teeth 511 meshing with the plurality of first limit teeth 521 are also provided on the scale 51. Thus, when the plurality of first limit teeth 521 mesh with the corresponding plurality of second limit teeth 511, the movement of the scale 51 relative to the mating hole 121 is effectively restricted, further ensuring the stability of the formed working distance.

[0059] Further, when the toggle 52 is rotatably connected to the mounting base 12, the scale 51 and the reset member 53 are respectively located at both ends of the rotatable connection portion between the toggle 52 and the mounting base 12; or, when the toggle 52 is slidably connected to the mounting base 12, the scale 51 and the reset member 53 sandwich the toggle 52, and the moving direction of the scale 51 relative to the mounting base 12 and the moving direction of the toggle 52 relative to the mounting base 12 form an angle or are perpendicular.

[0060] Based on the above specific content, in a specific example, an installation groove 122 is provided in the mounting base 12, and the mating hole 121 is longitudinally provided through the installation groove 122, and this longitudinal direction is parallel to the axis direction of the output shaft 201 of the impact drill; the toggle 52 is arranged in the installation groove 122, and correspondingly, the accommodation width of the installation groove 122 in the transverse direction is adapted to the transverse width of the toggle 52, avoiding the distance between the two being too large, resulting in the toggle 52 offsetting too much in the longitudinal direction in the installation groove 122, so that when it is in limit cooperation with the scale 51, it can still drive the scale 51 to move in the longitudinal direction, causing the processing distance to change during the processing.

[0061] For example, when the toggle member 52 and the mounting groove 122 are in rotational engagement, the ruler 51 is located at one end of the toggle member 52 in the lateral direction, and the reset member 53 is located at the other end of the toggle member 52 in the lateral direction, and the reset member 53 is clamped between the toggle member 52 and the mounting groove 122. In order to enable the reset member 53 to be stably connected between the toggle member 52 and the mounting groove 122, the mounting position can be a first limiting protrusion 522, and the reset member 53 is a reset spring. Therefore, the reset spring is sleeved on the first limiting protrusion 522, and correspondingly, a second limiting protrusion is provided in the mounting groove 122. The second limiting protrusion is surrounded in the mounting groove 122 to form a limiting space 123 for accommodating the reset spring, so as to prevent the reset spring from escaping from the limiting space 123 during the movement of the toggle member 52. Therefore, by applying a pressing force to the part of the toggle member 52 corresponding to the matching reset spring, the toggle member 52 can be rotated in the installation slot 122 around an axis parallel to the longitudinal direction, so that the toggle member 52 and the ruler 51 are disengaged, and the ruler 51 can be moved in the matching hole 121 along the longitudinal direction to adjust the size of the processing distance. When the pressing force is removed, the reset force of the reset spring can make the toggle member 52 abut against the corresponding side of the ruler 51, so as to limit the movement of the ruler 51.

[0062] In summary, no matter whether the toggle member 52 and the mounting seat 12 are in rotational cooperation or sliding cooperation, the toggle member 52 cooperates with the reset member 53 to realize the adjustment method of switching the ruler 51 between the fixed state and the movable state, which is simple and reliable.

[0063] Preferably, the adjustment assembly 40, for example, includes an adjustment member 41, which is arranged in the accommodating cavity of the shell assembly, and one end of the adjustment member 41 is connected to the elastic limit member 30, and the other end is movably connected to the matching portion 21 of the second handle shell 20; wherein, when the second handle shell 20 is rotated, the length of the adjustment member 41 extending into the second handle shell 20 increases or decreases so that the elastic limit member 30 tightens or loosens the impact tool accordingly.

[0064] Furthermore, the elastic limiting member 30 is provided with a limiting hole 31 matched with the adjusting member 41; the adjusting member 41 includes, for example, a limiting portion 411 and a connecting portion 412. The limiting portion 411 is provided at a position of the elastic limiting member 30 corresponding to the limiting hole 31 and away from the second handle housing 20; one end of the connecting portion 412 is connected to the limiting portion 411 through the limiting hole 31, and the other end is screwed to the second handle housing 20.

[0065] In a specific example, the connecting portion 412 can be a screw. Correspondingly, the mating portion 21 is a screwing portion installed on the mating groove 22 of the second handle housing 20. The screwing portion has an internal thread and is fixedly installed in the mating groove 22, so as to avoid relative rotation between the screwing portion and the second handle housing 20 during the process of rotating the second handle housing 20, which may reduce the efficiency of adjusting the installation diameter. Among them, the layout mode of the screw and the screwing portion in the cavity formed by the first handle housing 10 and the second handle housing 20 can be arranged parallel to the direction of the first axis. Thus, it can be defined that when the second handle housing 20 rotates forward, the length of the screw extending into the second handle housing 20 during the screwing process with the screwing portion continuously increases, thereby driving the installation diameter surrounded by the elastic limiting member 30 and the first handle housing 10 to continuously decrease. Correspondingly, it is defined that the second handle housing 20 rotates reversely, so that the length of the screw extending into the second handle housing 20 during the screwing process with the screwing portion continuously decreases, thereby driving the installation diameter surrounded by the elastic limiting member 30 and the first handle housing 10 to continuously increase.

[0066] Furthermore, the limiting portion 411 can be a limiting plate fixedly connected to the screw. To ensure the stability of driving the elastic limiting member 30 to move, the limiting end surface of the limiting plate for fitting with the corresponding end of the elastic limiting member 30 can be arranged perpendicular to the length direction of the screw, that is, the limiting plate and the screw are combined to form a "T" - shaped structure.

[0067] Furthermore, the part of the accommodating cavity corresponding to the cooperation between the elastic limiting member 30 and the limiting portion 411 is the first limiting cavity 14. Among them, the width of the first limiting cavity 14 formed in the transverse direction perpendicular to the first axis is smaller than the minimum length of either the limiting plate or the elastic limiting member 30 formed in the vertical direction. And the vertical direction, the horizontal direction and the longitudinal direction are perpendicular to each other. Combining the above - mentioned specific content, it can be understood that during the process of rotating the second handle housing 20, it is avoided that the limiting portion 411 also makes a large - angle circular rotation, which may reduce the efficiency of adjusting the installation diameter. Correspondingly, it is also avoided that during the above - mentioned process, the elastic limiting member 30 also rotates, so that a large torque is formed between it and the output end 200 of the impact tool, which may easily damage the self - structure of the elastic limiting member 30. Simply put, in an ideal state, during the process of rotating the second handle housing 20, the smaller the angles of rotation of the screw and the elastic limiting member 30 respectively, the higher the efficiency of adjusting the installation diameter.

[0068] Furthermore, since the width formed by the first limiting cavity 14 in the lateral direction perpendicular to the first axis is smaller than the minimum length formed by either the limiting plate or the elastic limiting member 30 in the vertical direction, when the limiting plate and / or the elastic limiting member 30 rotates by a certain angle within the first limiting cavity 14, it will abut against the inner wall of the first limiting cavity 14 and be restricted from rotating in the same direction, thereby ensuring that the elastic limiting member 30 and the adjusting member 41 perform translational motion.

[0069] Preferably, the adjusting assembly 40 further includes, for example, an elastic member 42. One end of the elastic member 42 abuts against the limiting bottom plate 13 within the accommodating cavity, and the other end clamps the corresponding part of the elastic limiting member 30 with the adjusting member 41. Specifically, through the coordinated cooperation of the elastic member 42 and the limiting plate, a squeezing force is applied to the corresponding part of the elastic limiting member 30, thereby ensuring that the adjusting assembly 40 can stably drive the elastic limiting member 30 to move during the rotation of the second handle housing 20.

[0070] In a specific example, the connecting portion 412 can be a screw. Correspondingly, the mating portion 21 is a screwing portion installed on the mating groove 22 of the second handle housing 20. The screwing portion has an internal thread and is fixedly installed within the mating groove 22, so that during the rotation of the second handle housing 20, relative rotation between the screwing portion and the second handle housing 20 is avoided, which may reduce the efficiency of adjusting the installation diameter. Among them, the layout manner of the screw and the screwing portion within the accommodating cavity formed by the first handle housing 10 and the second handle housing 20 can be arranged parallel to the direction of the first axis 102. Thus, it can be defined that when the second handle housing 20 rotates forward, the length of the screw extending into the second handle housing 20 continuously increases during the screwing process with the screwing portion, thereby driving the installation diameter surrounded by the elastic limiting member 30 and the first handle housing 10 to continuously decrease.

[0071] Further, when the second handle housing 20 rotates in the reverse direction, during the process of the limiting ring 32 moving along the reset direction, the adjusting member 41 cannot exert an effective thrust on it. The power for the limiting ring 32 to move along the reset direction comes from the restoring force of its own elastic deformation. Thus, it is easy to form a gap between the limiting plate and the reinforcing portion 33 due to the moving speed of the limiting plate being greater than the moving speed of the limiting ring 32 along the reset direction. Therefore, considering the structural characteristics of the elastic member 42, the elastic member 42 can apply a squeezing force to the reinforcing portion 33 to ensure that the reinforcing portion 33 is kept in close contact with the limiting plate. Furthermore, when the limiting ring 32 moves in the reset direction, it can return to the initial position in a short time, that is, the installation diameter surrounded by the limiting ring 32 and the first handle housing 10 continuously increases to the initial maximum diameter, thereby improving the efficiency of adjusting the limiting ring 32.

[0072] Further, the elastic limiting member 30 includes, for example, a limiting ring 32 exposed to the outside of the cavity and a reinforcing portion 33 for cooperating with the limiting portion 411. The reinforcing portion 33 is disposed inside the first limiting cavity 14 and is clamped between the limiting portion 411 and the elastic member 42. The limiting ring 32 is exposed to the outside of the accommodating cavity, and the mating end portion 11 of the limiting ring 32 and the first handle housing 10 forms an installation space 101 for accommodating the output end portion 200. Wherein, the larger the elastic member 42 is deformed by extrusion, the smaller the installation diameter is.

[0073] Preferably, the auxiliary handle 100 further includes, for example, a limiting assembly 60. The limiting assembly 60 is disposed at the connection between the first handle housing 10 and the second handle housing 20 to enable the second handle housing 20 to rotate around the first axis. Wherein, the moving direction of the adjusting member 41 extending into or out of the second handle housing 20 is parallel to the direction where the first axis is located. By the limiting assembly 60, the stability of the rotation of the second handle housing 20 relative to the first handle housing 10 can be improved, and the risk of the second handle housing 20 deviating from the first axis direction 102 during the rotation process can be reduced.

[0074] Preferably, the limiting assembly 60 includes, for example, a first limiting member 61 and a second limiting member 62. The first limiting member 61 is disposed circumferentially around the first axis direction 102 on the end face of the first handle housing 10 close to the second handle housing 20. The second limiting member 62 at least partially coincides with the first limiting member 61 in the transverse direction perpendicular to the direction where the first axis direction 102 is located, and the second limiting member 62 is disposed circumferentially around the first axis direction 102 on the end face of the second handle housing 20 close to the first handle housing 10.

[0075] Preferably, the limiting assembly 60 further includes, for example, a third limiting annular protrusion 63 and a fourth limiting annular protrusion 64. The third limiting annular protrusion 63 is disposed inside the accommodating cavity corresponding to the end of the first handle housing 10 close to the second handle housing 20. The fourth limiting annular protrusion 64 is disposed inside the accommodating cavity corresponding to the end of the second handle housing 20 close to the first handle housing 10, and the third limiting annular protrusion 63 and the fourth limiting annular protrusion 64 are nested.

[0076] Further, a first guiding portion 112 and a second guiding portion 113 are provided at the port position of the mating end portion 11 corresponding to form a mating opening, and the elastic limiting member 30 is clamped between the first guiding portion 112 and the second guiding portion 113. It can be understood that during the process of adjusting the size of the installation diameter, in order to enable the elastic limiting member 30 to be stably driven, that is, to avoid the elastic limiting member 30 being subjected to too much resistance from the mating end portion 11, resulting in too large a squeezing force formed by the abutment between the two and damaging the structure of the elastic limiting member 30. The first guiding portion 112 and / or the second guiding portion 113 can be tangent to the mating portion 21 of the limiting member.

[0077] Furthermore, in order to reduce the resistance between the elastic limiting member 30 and the first handle housing 10 during the movement of driving the elastic limiting member 30, the contact areas of the first guiding portion 112 and the second guiding portion 113 with the elastic limiting member 30 can be made different. For example, the contact area formed between the first guiding portion 112 and the elastic limiting member 30 can be made larger than the contact area formed between the second guiding portion 113 and the elastic limiting member 30. Correspondingly, the frictional force formed between the first guiding portion 112 and the elastic limiting member 30 is greater than the frictional force formed between the second guiding portion 113 and the elastic limiting member 30. Thus, during the process of driving the elastic limiting member 30 to move so as to reduce the installation aperture, the displacement of the end of the elastic limiting member 30 close to the first guiding portion 112 is smaller than the displacement of the end of the elastic limiting member 30 close to the second guiding portion 113. As a result, while the elastic limiting member 30 is kept in a stable state, the resistance borne by rotating the second handle housing 20 can be made smaller, that is, it is more labor-saving.

[0078] Embodiment 2:

[0079] Refer to Figure 15 , a schematic connection diagram of the output end portion 200 of an impact tool provided in Embodiment 2 of the present invention cooperating with the auxiliary handle 100. Combining Figures 1 - 17 , the impact tool includes, for example, an output end portion 200 and an auxiliary handle 100 as provided in Embodiment 1 above. Specifically, a connection position is provided on the outer surface of the output end portion 200; the auxiliary handle 100 is connected to the output end portion 200 through the connection position. Further, this embodiment can achieve the technical effects corresponding to any one of the technical solutions in Embodiment 1 above, which will not be elaborated here.

[0080] Preferably, at the position of the output end portion 200 corresponding to the connection position, a plurality of first engaging members 210 are provided along the axial direction of its output shaft 201; at least one second engaging member 111 is provided on the mating end portion 11 and is engaged with at least one of the plurality of first engaging members 210; wherein, when the second engaging member 111 is engaged with the first engaging member 210, the first handle housing 10 is fixedly arranged relative to the output end portion 200.

[0081] Specifically, stop protrusions 220 are provided at both ends of the first engaging member 210 along the first axis direction. When the second engaging member 111 is engaged with the corresponding first engaging member 210, the second engaging member 111 is clamped between the two stop protrusions 220, thereby restricting the auxiliary handle 100 from moving relative to the output end 200 along the first axis. In addition, the cooperation between the plurality of first engaging members 210 and the plurality of second engaging members 111 restricts the auxiliary handle 100 from rotating relative to the output end 200 about the first axis. Thus, through the above cooperation, the auxiliary handle 100 can be stably limited to the output end 200, so that during the use of the impact tool, the operator can stably hold the impact tool by holding the auxiliary handle 100 and the switch handle, thereby improving the processing efficiency.

[0082] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the claims.

Claims

1. An auxiliary handle for an impact tool, characterized in that, include: A housing assembly, the housing assembly comprising a first handle housing and a second handle housing movably connected to each other; An elastic limiting member, wherein the elastic limiting member is connected to a mating end portion of the first handle housing, and an installation space for installing the impact tool is formed between the elastic limiting member and the mating end portion; An adjusting component, the adjusting component is connected to the interior of the housing component, and the adjusting component is connected to the elastic limiting member and the second handle housing; a caliper assembly connected to the housing assembly; Wherein, when the second handle housing is adjusted to move relative to the first handle housing, the installation diameter surrounded by the installation space increases or decreases; The adjustment component comprises: An adjusting member, wherein the adjusting member is disposed in the accommodating cavity of the housing assembly, and one end of the adjusting member is connected to the elastic limiting member, and the other end of the adjusting member is movably connected to the matching portion of the second handle housing; Wherein, when the second handle housing is rotated, the length of the adjusting member extending into the second handle housing increases or decreases so that the elastic limiting member correspondingly tightens or loosens the impact tool; An elastic member, one end of which abuts against the limiting bottom plate in the accommodating cavity, and the other end of which clamps a corresponding part of the elastic limiting member with the adjusting member; A limiting assembly, the limiting assembly being arranged at a connection between the first handle housing and the second handle housing to enable the second handle housing to rotate around a first axis; Wherein, the moving direction of the adjusting member extending into or out of the second handle housing is arranged parallel to the direction where the first axis is located.

2. The auxiliary handle according to claim 1, wherein The housing assembly is provided with a mounting seat for mounting the caliper assembly; the caliper assembly comprises: A ruler connected to a matching hole provided on the mounting seat; A toggle member is movably connected to the mounting seat at a position corresponding to the measuring ruler, so that the measuring ruler is in a fixed state or a movable state relative to the mounting seat.

3. The auxiliary handle according to claim 2, characterized in that: The toggle member is provided with a mounting position for mounting a reset member on a side close to the mounting seat; Wherein, a first extrusion deformation amount of the reset member when the ruler is in the fixed state is smaller than a second extrusion deformation amount when the ruler is in the active state.

4. The auxiliary handle according to claim 3, characterized in that: When the toggle member and the mounting seat are rotatably connected, the ruler and the reset member are respectively located at two ends of the rotatably connected portion between the toggle member and the mounting seat; Alternatively, when the toggle member is slidably connected to the mounting seat, the ruler and the reset member clamp the toggle member, and the moving direction of the ruler relative to the mounting seat and the moving direction of the toggle member relative to the mounting seat form an angle or are arranged vertically.

5. The auxiliary handle according to claim 1, wherein, The elastic limiting member is provided with a limiting hole matched with the adjusting member; the adjusting member comprises: A limiting portion, the limiting portion being arranged at a position of the elastic limiting member corresponding to the limiting hole formed away from the second handle housing; A connecting part, one end of which is connected to the limiting part through the limiting hole, and the other end of which is screwed to the second handle housing.

6. An impact tool, characterized in that, Comprising: An output end portion, on the outer surface of which a connection position is provided; The auxiliary handle according to any one of claims 1-5, wherein the auxiliary handle is connected to the output end portion through the connection position.

7. The impact tool according to claim 6, characterized in that At the position of the output end portion corresponding to the connection position, a plurality of first engaging members are provided along the axial direction of its output shaft; The mating end portion is provided with at least one second engaging member that engages with at least one of the plurality of first engaging members; Wherein, when the second engaging member engages with the first engaging member, the first handle housing is fixedly arranged relative to the output end portion.

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