A protective structure and a handheld electric impact drill having the same

Abstract

The present invention discloses a protective structure, including a protective module, wherein a drill rod fixing seat is arranged inside the protective module, a drill bit is arranged on one side of the drill rod fixing seat, and three protective plates equidistantly distributed around the periphery are arranged outside the protective module, wherein the protective module includes three convex rods equidistantly distributed around the periphery, the convex rods are all located outside the drill rod fixing seat, the convex rods are fixedly connected to the side opposite to the drill rod fixing seat, the convex rods are externally slidably connected to the same sleeve, the sleeve is externally fixedly connected to a receiving frame, and the sleeve is externally slidably connected to a movable ring. The protective structure disclosed by the present invention has the function of freely switching between the two states of unfolding and erecting and contracting of the protective structure on a handheld impact drill, so as to help the user freely choose according to the operating environment when using the impact drill, reduce the interference of the permanent protective structure on the operator's work, and improve the operator's use experience.

Description

Technical Field

[0001] The invention relates to the technical field of electric drills, and in particular to a protective structure and a handheld electric impact drill having the same. Background Art

[0002] Impact drills work by rotating and impacting. A single impact is very slight, but a frequency of more than 40,000 impacts per minute can produce continuous force. It can be used for natural stone or concrete. When the impact drill is working, there is an adjustment knob on the drill chuck, which can adjust the two modes of ordinary hand drills and impact drills. However, the impact drill uses the gears on the inner shaft to jump against each other to achieve the impact effect, and the impact force is far less than that of an electric hammer. It is not suitable for drilling reinforced concrete.

[0003] The protective structures installed on existing handheld electric impact drills are usually directly fixed on the surface of the impact drill. These protective devices cannot be retracted after installation and have an increased size, resulting in a poor experience for workers during actual use. In addition, the protective structures that cannot be retracted will also interfere with the workers' normal use of the impact drill. Summary of the invention

[0004] The present invention discloses a protective structure and a handheld electric impact drill having the same, aiming to solve the technical problem in the background technology that the existing impact drill protective structure cannot be converged, resulting in a poor user experience.

[0005] A protection structure proposed in the present invention includes a protection module, wherein a drill rod fixing seat is arranged inside the protection module, a drill bit is arranged on one side of the drill rod fixing seat, and three protection plates equidistantly distributed around the circumference are arranged outside the protection module, the protection module includes three convex rods equidistantly distributed around the circumference, the convex rods are all located outside the drill rod fixing seat, the convex rods are fixedly connected to the side opposite to the drill rod fixing seat, the outside of the convex rods are slidably connected to the same sleeve, and the outside of the sleeve is fixedly connected to a containing frame, the outside of the sleeve is slidably connected to a movable ring, the outside of the containing frame is provided with three rectangular grooves equidistantly distributed around the circumference, the rectangular grooves are slidably connected to supports, the three supports are fixedly connected to the side opposite to the movable ring, and the outside of the containing frame is fixedly connected to three equidistantly distributed around the circumference. The cam is connected to the rear of the three support brackets at a fixed position, and the cam is connected to the rear of the three support brackets at a fixed position, and the cam is connected to the rear of the three support brackets at a fixed position, and the cam is connected to the rear of the three support brackets at a fixed position, and the cam is connected to the rear of the three support brackets at a fixed position, and the cam is connected to the rear of the three support brackets at a fixed position. The inner wall is slidably connected, and three circumferentially equidistantly distributed sliding grooves are provided on the outside of the bevel gear seat, and a contact toothed ring is provided on the side of the sliding groove away from the contact ring, and the inner wall of the contact toothed ring is slidably connected to the outside of the sleeve; the contact toothed ring is in contact with the side opposite to the sliding groove one, and the movable ring is fixedly connected to the side opposite to the contact toothed ring, and three circumferentially equidistantly distributed sliding grooves are provided on the outside of the movable ring, and the sliding grooves two and the sliding groove one are not on the same plane, and a sliding frame is fixedly connected on the side of the movable ring away from the bevel gear seat, and the inner wall of the sliding frame is slidably connected to the outside of the sleeve, and a long rod is slidably connected in the sliding grooves two, and the end of the long rod away from the movable ring is fixedly connected to the same connecting ring, and the outside of the connecting ring is fixedly connected to the inner wall of the accommodating frame, and the end of the long rod away from the connecting ring is connected to the bevel The teeth on the face tooth seat are externally clamped; the connecting ring is fixedly connected to a spring 2 on the side away from the movable ring, and the spring 2 is located on the outside of the sleeve. The end of the spring 2 away from the connecting ring is fixedly connected to a positioning ring, the inner wall of the positioning ring is fixedly connected to the outside of the sliding frame, the outside of the positioning ring is slidably connected to the inner wall of the accommodating frame, and the outside of the accommodating frame is fixedly connected to an annular seat, and the annular seat is located between the three protective plates; three grooves are provided on the side of the annular seat close to the drill bit, and the grooves are slidably connected with clamping blocks, the outsides of the three clamping blocks are respectively clamped with the outsides of the three protective plates, and the sides of the clamping blocks away from the protective plates are fixedly connected with short shafts, and the side of the annular seat away from the protective plate is movably connected to a rotating frame, and the rotating frame is provided with three curved grooves equidistantly distributed around the circumference;The inner walls of the three curved grooves are respectively slidably connected to the outside of the three short shafts, and the inner wall of the rotating frame is connected to a torsion spring through bolts, and one end of the torsion spring away from the rotating frame is fixedly connected to the outside of the annular seat, and the rotating frame is located outside the accommodating frame. ;

[0006] By providing a drill rod fixing seat, a drill bit and a protection module, the device can use the protection module to realize free switching between the deployment and contraction states of the protection structure on the handheld impact drill, so as to help the user to freely choose according to the operating environment when using the impact drill, reduce the interference of the permanent protection structure on the operator's work, and improve the operator's usage experience.

[0007] A handheld electric impact drill comprises a protective structure as described above, and also comprises an impact drill body, the outside of the impact drill body is fixedly connected with an opposing handle and a grip, the opposing handle and the grip are located on the same plane, and a power cord is arranged at the bottom of the grip, and a quick fixing module is arranged outside the drill rod fixing seat; the quick fixing module comprises an insertion ring, the insertion ring is fixedly connected to the side opposite to the sleeve, the outside of the insertion ring is slidably connected with a containing frame, the inner wall of the movable frame is fixedly connected with the outside of the drill rod fixing seat, the outside of the movable frame is slidably connected with a sliding frame, and the outside of the movable frame A plurality of circumferentially equidistantly distributed notches are provided, and balls are slidably connected in the notches. Two equidistantly distributed annular curved grooves are provided on the outside of the insertion ring, and the outsides of the balls are respectively engaged with the inner walls of the two annular curved grooves; a spring three is fixedly connected to the outside of the movable frame, and one end of the spring three away from the movable frame is fixedly connected to the inner wall of the sliding frame, and an annular groove one is provided on the inner wall of the sliding frame, and the inner wall of the annular groove one is fitted with the outside of the balls, and an annular groove two is provided on the inner wall of the annular groove one away from the balls, and the annular groove two is connected to the annular groove one, and the annular groove two is located on the inner wall of the sliding frame.

[0008] By providing a quick fixing module, the quick fixing module enables the device to quickly remove the protective structure in a scenario where the protective structure is not needed, thereby achieving the purpose of reducing the weight of the impact drill, reducing the burden on the operator, and improving the operator's work efficiency.

[0009] From the above, it can be seen that the protective structure provided by the present invention can realize the free switching between the two states of deployment and contraction of the protective structure on the handheld impact drill, so as to help the user to freely choose according to the operating environment when using the impact drill, reduce the interference of the permanent protective structure on the operator's work, and improve the operator's usage experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A schematic diagram of the anti-skid module structure of a protective structure proposed by the present invention;

[0011] Figure 2A schematic diagram of a receiving frame structure of a protective structure proposed by the present invention;

[0012] Figure 3 A schematic diagram of a movable ring structure of a protective structure proposed by the present invention;

[0013] Figure 4 A schematic diagram of a connecting ring structure of a protective structure proposed by the present invention;

[0014] Figure 5 A schematic diagram of the annular seat structure of a protective structure proposed by the present invention;

[0015] Figure 6 This is a schematic diagram of the structure of the quick fixing module of the handheld electric impact drill proposed by the present invention;

[0016] Figure 7 This is a schematic diagram of the overall structure of the handheld electric impact drill proposed by the present invention.

[0017] In the figure: 1. impact drill body; 2. grip; 3. power cord; 4. opposite handle; 5. drill rod fixing seat; 6. drill bit; 7. protective plate; 8. protective module; 801. protruding rod; 802. sleeve; 803. containing frame; 804. spring 1; 805. contact ring; 806. bevel gear seat; 807. slide groove 1; 808. movable ring; 809. contact gear ring; 810. slide groove 2; 811. sliding frame; 812. positioning ring; 813. spring 2; 814. long rod; 815. connecting ring; 816, rectangular groove; 817, support; 818, connecting ring; 819, pushing plate; 820, vertical rod; 821, narrow groove; 822, annular seat; 823, cutting groove; 824, blocking block; 825, short shaft; 826, rotating frame; 827, curved groove; 828, torsion spring; 9, quick fixing module; 901, insertion ring; 902, annular curved groove; 903, movable frame; 904, ball bearing; 905, sliding frame; 906, annular groove one; 907, annular groove two; 908, spring three. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] A protective structure and a handheld electric impact drill having the same disclosed in the present invention are mainly used in scenarios where the existing impact drill protective structure cannot be converged, resulting in a poor user experience.

[0020] Reference Figure 1-7A protective structure includes a protective module 8, wherein a drill pipe fixing seat 5 is arranged inside the protective module 8, a drill bit 6 is arranged on one side of the drill pipe fixing seat 5, and three protective plates 7 are arranged on the outside of the protective module 8 at equal distances from each other. The protective module 8 includes three convex rods 801 distributed at equal distances from each other. The convex rods 801 are all located outside the drill pipe fixing seat 5, and the convex rods 801 are connected to the drill pipe fixing seat 5 on the opposite side thereof by bolts. The outside of the convex rod 801 is slidably connected to the same sleeve 802, and the outside of the sleeve 802 is connected to a containing frame 803 by bolts. The outside of the sleeve 802 is slidably connected to a movable ring 808, and the outside of the containing frame 803 is provided with three rectangular grooves 816 distributed at equal distances from each other, and the rectangular grooves 816 are slidably connected to the supports. 817, the three supports 817 are connected to the side opposite to the movable ring 808 by bolts, and the outside of the accommodating frame 803 is connected to three circumferentially equidistant vertical rods 820 by bolts; the ends of the vertical rods 820 away from the accommodating frame 803 are rotatably connected to the outsides of the three protective plates 7 by bearings, the outsides of the three supports 817 are connected to the same connecting ring 818 by bolts, and the outside of the connecting ring 818 is rotatably connected to three circumferentially equidistant push plates 819 by bearings, and narrow grooves 821 are provided on the push plates 819, and the inner walls of the three narrow grooves 821 are slidably connected to the outsides of the three vertical rods 820, and the ends of the three push plates 819 away from the connecting ring 818 are rotatably connected to the outsides of the three protective plates 7 by bearings; The inner wall of the frame 803 on the side away from the protective plate 7 is connected with a spring 804 by bolts, and the outer part of the sleeve 802 is slidably connected with a contact ring 805. The outer part of the contact ring 805 is connected with the end of the spring 804 close to the protective plate 7 by bolts. The outer part of the sleeve 802 is slidably connected with a bevel gear seat 806. The bevel gear seat 806 fits with the side opposite to the contact ring 805, and the outer part of the bevel gear seat 806 is slidably connected with the inner wall of the accommodating frame 803. The outer part of the bevel gear seat 806 is provided with three circumferentially equidistantly distributed sliding grooves 807. The side of the sliding groove 807 away from the contact ring 805 is provided with a contact toothed ring 809. The inner wall of the contact toothed ring 809 is slidably connected with the outer part of the sleeve 802; the contact toothed ring 809 is opposite to the sliding groove 807. Side contact, the side of the movable ring 808 opposite to the contact tooth ring 809 is connected by bolts, and three circumferentially equidistantly distributed sliding grooves 810 are opened on the outside of the movable ring 808, and the sliding groove 810 and the sliding groove 1 807 are not on the same plane, and the side of the movable ring 808 away from the bevel tooth seat 806 is connected with a sliding frame 811 by bolts, and the inner wall of the sliding frame 811 is slidably connected to the outside of the sleeve 802, and the inside of the sliding groove 810 is slidably connected with a long rod 814, and the end of the long rod 814 away from the movable ring 808 is connected with the same connecting ring 815 by bolts, and the outside of the connecting ring 815 is connected with the inner wall of the accommodating frame 803 by bolts, and the end of the long rod 814 away from the connecting ring 815 is clamped with the outside of the teeth on the bevel tooth seat 806;The side of the connecting ring 815 away from the movable ring 808 is connected to the spring 2 813 by bolts, and the spring 2 813 is located outside the sleeve 802. The end of the spring 2 813 away from the connecting ring 815 is connected to the positioning ring 812 by bolts. The inner wall of the positioning ring 812 is connected to the outside of the sliding frame 811 by bolts, and the outside of the positioning ring 812 is slidably connected to the inner wall of the containing frame 803, and the outside of the containing frame 803 is connected to the annular seat 822 by bolts. The annular seat 822 is located between the three protective plates 7; the side of the annular seat 822 close to the drill bit 6 is provided with three cutting grooves 823, and the cutting grooves 823 are all slidably connected with the positioning blocks 824. The outside of each of the three positioning blocks 824 is respectively connected to the outside of the three protection plates 7, and the side of the positioning blocks 824 away from the protection plate 7 is connected to the short shaft 825 by bolts, and the side of the annular seat 822 away from the protection plate 7 is rotatably connected to the rotating frame 826 through a bearing, and the rotating frame 826 is provided with three curved grooves 827 equidistantly distributed around the circumference; the inner walls of the three curved grooves 827 are respectively slidably connected to the outside of the three short shafts 825, and the inner wall of the rotating frame 826 is connected to the torsion spring 828 by bolts, and the end of the torsion spring 828 away from the rotating frame 826 is connected to the outside of the annular seat 822 by bolts, and the rotating frame 826 is located outside the accommodating frame 803. ;

[0021] Specifically, when the unfolded protective plate 7 needs to be closed and gathered, the sliding frame 811 is pushed to move inside the receiving frame 803, so that the contact toothed ring 809 on the movable ring 808 connected to the sliding frame 811 contacts the teeth of the bevel toothed seat 806, so that the bevel toothed seat 806 overcomes the thrust of the spring 1 804 and moves into the receiving frame 803. After the teeth of the bevel toothed seat 806 are no longer engaged with the long rod 814, the contact toothed ring 809 and the bevel toothed seat 806 are moved to the receiving frame 803. Under the push of the upper tooth bevel, the bevel tooth holder 806 rotates, so that the second slide groove 810 and the first slide groove 807 are in the same straight line, and the sliding frame 811 is released. Under the push of the spring 1 804, the long rod 814 on the second slide groove 810 is inserted into the first slide groove 807, so that the bevel tooth holder 806 can move to the outside of the accommodating frame 803 under the push of the spring 1 804, so that the support 817 connected to the movable ring 808 slides outward on the rectangular groove 816 and The connecting ring 818 connected to the support 817 pushes the pushing plate 819 to move outward. Since the end of the pushing plate 819 away from the connecting ring 818 is rotatably connected to the protective plate 7, the protective plate 7 is rotated around the connection with the vertical rod 820, and the rotating frame 826 is rotated. During the rotation process, the curved groove 827 on the rotating frame 826 pushes the short shaft 825 connected to the blocking block 824 to move inward, so that the blocking block 824 releases the clamping connection with the outside of the protective plate 7, thereby rotating and converging the protective plate 7 to the erection state of the contact protective plate 7. When the protective plate 7 needs to be erected and unfolded, the sliding frame 811 can be pressed again according to the above steps; the device uses the protection module 8 to realize free switching between the unfolding and erecting and folding states of the protective structure on the handheld impact drill, so as to help the user to freely choose according to the operating environment when using the impact drill, reduce the interference of the permanent protection structure on the operator's work, and improve the operator's usage experience.

[0022] Reference Figure 3 and Figure 7A handheld electric impact drill comprises a protective structure as described above, and also comprises an impact drill body 1, the outside of the impact drill body 1 is connected with an opposing handle 4 and a grip 2 by bolts, the opposing handle 4 and the grip 2 are located on the same plane, and a power cord 3 is arranged at the bottom of the grip 2, and a quick fixing module 9 is arranged outside the drill rod fixing seat 5; the quick fixing module 9 comprises an insertion ring 901, the insertion ring 901 is connected with a sleeve 802 on one side thereof, and a receiving frame 803 is slidably connected to the outside of the insertion ring 901, the inner wall of the movable frame 903 is connected with the outside of the drill rod fixing seat 5 by bolts, the outside of the movable frame 903 is slidably connected with a sliding frame 905, and a plurality of circumferentially equidistantly distributed The outer part of the insert ring 901 is provided with two equidistantly distributed annular curved grooves 902, and the outer part of the ball 904 is respectively engaged with the inner walls of the two annular curved grooves 902; the outer part of the movable frame 903 is connected with a spring three 908 by bolts, and the end of the spring three 908 away from the movable frame 903 is connected to the inner wall of the sliding frame 905 by bolts, and the inner wall of the sliding frame 905 is provided with an annular groove one 906, and the inner wall of the annular groove one 906 is fitted with the outer part of the ball 904, and the inner wall of the annular groove one 906 away from the ball 904 is provided with an annular groove two 907, and the annular groove two 907 is connected with the annular groove one 906, and the annular groove two 907 is located on the inner wall of the sliding frame 905.

[0023] Specifically, when the sleeve 802 is fixed on the drill pipe fixing seat 5, the sliding frame 905 is pushed to overcome the thrust of the spring three 908 and move backward, and the insertion ring 901 on the sleeve 802 is aligned with the movable frame 903 and inserted. At this time, under the push of the outside of the insertion ring 901, the ball 904 is lifted into the annular groove two 907, so that the insertion ring 901 can be smoothly inserted into the movable frame 903, and the sliding frame 905 is released. The spring three 908 pushes the sliding frame 905 to quickly reset, so that the inner wall of the annular groove one 906 presses the ball 904 back into the notch opened on the movable frame 903, so that the outside of the ball 904 can fit the inner wall of the annular curved groove 902 and fix the insertion ring 901 in the movable frame 903.

[0024] In specific application scenarios, the quick fixing module 9 is mainly suitable for the quick fixing link in the quick fixing process, that is, the quick fixing module 9 can enable the device to quickly remove the protective structure in a scenario where the protective structure is not needed, thereby achieving the purpose of reducing the weight of the impact drill, reducing the burden on the operator, and improving the operator's work efficiency.

[0025] Working principle: When the sleeve 802 is fixed on the drill pipe fixing seat 5, the sliding frame 905 is pushed to overcome the thrust of the spring three 908 and move backward, and the insertion ring 901 on the sleeve 802 is aligned with the movable frame 903 and inserted. At this time, under the push of the outside of the insertion ring 901, the ball 904 is lifted into the annular groove 2 907, so that the insertion ring 901 can be smoothly inserted into the movable frame 903, and the sliding frame 905 is released. The spring three 908 pushes the sliding frame 905 to quickly reset, so that the inner wall of the annular groove 1 906 presses the ball 904 back to the movable frame 903 to start The groove is designed so that the outer part of the ball 904 can fit with the inner wall of the annular curved groove 902 and fix the insertion ring 901 in the movable frame 903. When it is necessary to close and gather the unfolded protective plate 7, the sliding frame 811 is pushed to move inside the accommodating frame 803, so that the contact tooth ring 809 on the movable ring 808 connected to the sliding frame 811 contacts the teeth of the bevel tooth seat 806, so that the bevel tooth seat 806 overcomes the thrust of the spring 1 804 and moves into the accommodating frame 803. After the teeth of the bevel tooth seat 806 move to it are no longer engaged with the long rod 814, the contact tooth ring 809 is pressed against the bevel tooth seat 806. Under the push of the ring 809 and the beveled tooth seat 806, the beveled tooth seat 806 rotates, so that the second slide 810 and the first slide 807 are in the same straight line, and the sliding frame 811 is released. Under the push of the spring 1 804, the long rod 814 on the second slide 810 is inserted into the first slide 807, so that the beveled tooth seat 806 can move to the outside of the accommodating frame 803 under the push of the spring 1 804, so that the support 817 connected to the movable ring 808 slides outward on the rectangular groove 816 and the connecting ring 818 connected to the support 817 pushes the push plate 819 moves outward, and since the end of the push plate 819 away from the connecting ring 818 is rotatably connected to the protective plate 7, the protective plate 7 rotates around the connection with the vertical rod 820, and the rotating frame 826 is rotated. During the rotation process, the curved groove 827 on the rotating frame 826 pushes the short shaft 825 connected to the locking block 824 to move inward, so that the locking block 824 releases the locking on the outside of the protective plate 7, thereby rotating and converging the protective plate 7 to the erection state of the contact protective plate 7. When the protective plate 7 needs to be erected and unfolded, follow the above steps and press the sliding frame 811 again.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A protection structure, comprising a protection module (8), It is characterized in that The protection module (8) is provided with a drill rod fixing seat (5) inside, a drill bit (6) is provided on one side of the drill rod fixing seat (5), and three protection plates (7) are provided on the outside of the protection module (8) at equal intervals around the circumference. The protection module (8) comprises three convex rods (801) at equal intervals around the circumference. The convex rods (801) are all located outside the drill rod fixing seat (5), the convex rods (801) are fixedly connected to the side opposite to the drill rod fixing seat (5), and the outside of the convex rods (801) is slidably connected to the same sleeve (801). 02), and the outside of the sleeve (802) is fixedly connected to a containing frame (803), the outside of the sleeve (802) is slidably connected to a movable ring (808), the outside of the containing frame (803) is provided with three rectangular grooves (816) equidistantly distributed around the circumference, the insides of the rectangular grooves (816) are all slidably connected to supports (817), the three supports (817) are fixedly connected to the side opposite to the movable ring (808), and the outside of the containing frame (803) is fixedly connected to three vertical rods (820) equidistantly distributed around the circumference; One end of the vertical rod (820) away from the containing frame (803) is movably connected to the outside of the three protective plates (7), the outside of the three supports (817) is fixedly connected to the same connecting ring (818), and the outside of the connecting ring (818) is movably connected to three circumferentially equidistantly distributed pushing plates (819), each of which is provided with a narrow groove (821), and the inner walls of the three narrow grooves (821) are slidably connected to the outside of the three vertical rods (820), and one end of the three pushing plates (819) away from the connecting ring (818) is movably connected to the outside of the three protective plates (7); A spring 1 (804) is fixedly connected to the inner wall of the side of the accommodating frame (803) away from the protective plate (7); a contact ring (805) is slidably connected to the outside of the sleeve (802); the outside of the contact ring (805) is fixedly connected to the end of the spring 1 (804) close to the protective plate (7); a bevel gear seat (806) is slidably connected to the outside of the sleeve (802); the bevel gear seat (806) is fitted with the side opposite to the contact ring (805), and the outside of the bevel gear seat (806) is slidably connected to the inner wall of the accommodating frame (803); three circumferentially equidistantly distributed sliding grooves 1 (807) are provided on the outside of the bevel gear seat (806); a contact gear ring (809) is provided on the side of the sliding groove 1 (807) away from the contact ring (805); and the inner wall of the contact gear ring (809) is slidably connected to the outside of the sleeve (802).

2. A protective structure according to claim 1, It is characterized in that The contact tooth ring (809) contacts the side opposite to the slide groove 1 (807), the movable ring (808) is fixedly connected to the side opposite to the contact tooth ring (809), the movable ring (808) is provided with three slide grooves 2 (810) equidistantly distributed on the circumference on the outside of the movable ring (808), the slide grooves 2 (810) and the slide groove 1 (807) are not on the same plane, and the side of the movable ring (808) away from the bevel gear seat (806) is fixedly connected to a sliding frame (811), the sliding The inner wall of the frame (811) is slidably connected to the outside of the sleeve (802), and a long rod (814) is slidably connected in the second slide groove (810). One end of the long rod (814) away from the movable ring (808) is fixedly connected to the same connecting ring (815). The outside of the connecting ring (815) is fixedly connected to the inner wall of the accommodating frame (803), and one end of the long rod (814) away from the connecting ring (815) is clamped to the outside of the teeth on the bevel tooth seat (806).

3. A protective structure according to claim 2, It is characterized in that A second spring (813) is fixedly connected to a side of the connecting ring (815) away from the movable ring (808), and the second spring (813) is located outside the sleeve (802). An end of the second spring (813) away from the connecting ring (815) is fixedly connected to a positioning ring (812), and an inner wall of the positioning ring (812) is fixedly connected to the outside of the sliding frame (811), and the outside of the positioning ring (812) is slidably connected to the inner wall of the containing frame (803), and an annular seat (822) is fixedly connected to the outside of the containing frame (803), and the annular seat (822) is located between the three protective plates (7).

4. A protective structure according to claim 3, It is characterized in that The annular seat (822) is provided with three cutting grooves (823) on a side close to the drill bit (6), and each of the cutting grooves (823) is slidably connected with a clamping block (824), the outsides of the three clamping blocks (824) are respectively clamped with the outsides of three protective plates (7), and each of the clamping blocks (824) is fixedly connected with a short shaft (825) on a side away from the protective plate (7), and a rotating frame (826) is movably connected to a side of the annular seat (822) away from the protective plate (7), and the rotating frame (826) is provided with three curved surface grooves (827) distributed equidistantly around the circumference.

5. A protective structure according to claim 4, It is characterized in that The inner walls of the three curved grooves (827) are respectively slidably connected to the outside of the three short shafts (825), and the inner wall of the rotating frame (826) is connected to a torsion spring (828) via bolts, and one end of the torsion spring (828) away from the rotating frame (826) is fixedly connected to the outside of the annular seat (822), and the rotating frame (826) is located outside the accommodating frame (803).

6. A handheld electric impact drill, comprising a protective structure as claimed in any one of claims 1 to 5, It is characterized in that It also comprises an impact drill body (1), the outside of the impact drill body (1) being fixedly connected with an opposing handle (4) and a grip (2), the opposing handle (4) and the grip (2) being located on the same plane, a power cord (3) being arranged at the bottom of the grip (2), and a quick fixing module (9) being arranged at the outside of a drill rod fixing seat (5).

7. The handheld electric impact drill according to claim 6, It is characterized in that The quick fixing module (9) comprises an insertion ring (901), the insertion ring (901) is fixedly connected to a side opposite to the sleeve (802), the outside of the insertion ring (901) is slidably connected to a containing frame (803), the inner wall of the movable frame (903) is fixedly connected to the outside of the drill rod fixing seat (5), the outside of the movable frame (903) is slidably connected to a sliding frame (905), and the outside of the movable frame (903) is provided with a plurality of notches distributed equidistantly around the circumference, and balls (904) are slidably connected in the notches, the outside of the insertion ring (901) is provided with two annular curved grooves (902) distributed equidistantly, and the outside of the balls (904) are respectively engaged with the inner walls of the two annular curved grooves (902).

8. The handheld electric impact drill according to claim 7, It is characterized in that The outside of the movable frame (903) is fixedly connected to a spring three (908); one end of the spring three (908) away from the movable frame (903) is fixedly connected to the inner wall of the sliding frame (905); an annular groove one (906) is provided on the inner wall of the sliding frame (905); the inner wall of the annular groove one (906) is in contact with the outside of the ball bearing (904); an annular groove two (907) is provided on the inner wall of the annular groove one (906) away from the ball bearing (904); the annular groove two (907) is connected to the annular groove one (906); and the annular groove two (907) is located on the inner wall of the sliding frame (905).

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