A shock-absorbing electric hammer

Abstract

The present invention relates to the technical field of electric hammers, and particularly relates to a shock-absorbing electric hammer; it includes a hammer body, one side of the hammer body is fixedly connected to a main grip, a switch is arranged inside the main grip, and an extension section is arranged on the other side of the hammer body. A secondary grip is fixedly installed at a position near the lower end of the outer surface of the extension section. A protective sleeve is fixedly installed on the side of the extension section away from the hammer body. A fixing sleeve is fixedly installed on the other side of the protective sleeve. A drill bit is connected through the inside of the other side of the fixing sleeve; a cleaning unit is arranged at the left end of the protective sleeve and outside the drill bit, mainly solving the problem that in the prior art, during the process of drilling with the drill bit, due to the lack of a corresponding protective structure to isolate the dust generated during drilling, when using the electric hammer, the user is too close to the drilling part, resulting in a certain probability that the dust generated during drilling is inhaled into the body by the user with breathing, which endangers the physical health of the user.

Description

Technical Field

[0001] The present invention relates to the technical field of electric hammers, and particularly relates to a shock-absorbing electric hammer. Background Art

[0002] With the development of society, as a type of electric drill, an electric hammer is mainly used for drilling holes in concrete, floor slabs, brick walls, and stones, and thus is widely used in various fields. Based on the electric drill, an electric hammer adds a piston driven by an electric motor with a crank connecting rod, which reciprocally compresses air in a cylinder, causing the air pressure in the cylinder to change periodically. The changing air pressure drives a hammer in the cylinder to reciprocally strike the top of the drill bit, thereby performing hammering while rotating the drill bit to increase the drilling efficiency.

[0003] In the prior art, during the use of an electric hammer, a drill bit is usually directly used to drill a hole at the position where drilling is required. During the drilling process, since there is no corresponding protective structure to isolate the dust generated during drilling, and the user is too close to the drilling position when using the electric hammer, there is a certain probability that the dust generated during drilling is inhaled into the body by the user, endangering the user's physical health.

[0004] Therefore, a shock-absorbing electric hammer is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a solution to the problem that in the prior art, during the use of an electric hammer, a drill bit is usually directly used to drill a hole at the position where drilling is required. During the drilling process, since there is no corresponding protective structure to isolate the dust generated during drilling, and the user is too close to the drilling position when using the electric hammer, there is a certain probability that the dust generated during drilling is inhaled into the body by the user, endangering the user's physical health.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A shock-absorbing electric hammer includes a hammer body. One side of the hammer body is fixedly connected to a main grip. A switch is arranged inside the main grip, and an extension section is arranged on the other side of the hammer body. A secondary grip is fixedly installed at a position near the lower end of the outer surface of the extension section. A protective sleeve is fixedly installed on the side of the extension section away from the hammer body. A fixed sleeve is fixedly installed on the other side of the protective sleeve. A drill bit is connected through the inside of the other side of the fixed sleeve;

[0008] A cleaning unit is arranged at the left end of the protective sleeve and outside the drill bit.

[0009] Preferably, the cleaning unit includes: a connection block, a rubber spring, a dust collection device, a first annular housing, a second annular housing, a limit block, a rotating disk, and a fixed disk;

[0010] An annular fixing groove is formed on the outer surface of the fixed sleeve. A connecting block is fixedly installed on the annular fixing groove. A rubber spring is fixedly connected to the outer wall of the connecting block. The left end of the rubber spring is fixedly connected to the rotating disk. A first groove is formed at the right end of the fixed disk. The side wall of the first groove is rotationally connected to the side wall of the rotating disk through a bearing. The inner wall of the left end of the first groove is rotationally connected to the outer surface of the left side of the rotating disk;

[0011] The outer side of the right surface of the fixed disk is fixedly connected with a second annular housing. A second groove is formed at the right end of the second annular housing. The edge of the left surface of the fixed sleeve is fixedly connected with a first annular housing. The left end of the first annular housing is slidably connected to the inner wall of the second groove. The inner surface of the first annular housing is slidably connected to the outer surface of the connecting block;

[0012] A dust collection device is fixedly connected to the lower end of the middle part of the first annular housing. The opening end of the dust collection device penetrates through the first annular housing and extends to the inside;

[0013] The drill bit sequentially penetrates through the rubber spring, the rotating disk and the fixed disk and extends to the outside. The inner wall of the right end of the rubber spring is fixedly connected to the outer surface of the drill bit. A first through hole is formed at the position where the rotating disk is penetrated by the drill bit. A second through hole is formed at the position where the fixed disk is penetrated by the drill bit.

[0014] Preferably, a hollow inner cavity is formed at the edge part of the rubber spring after being penetrated by the brick. A water injection port is formed at the left end of the rubber spring. The water injection port is communicated with the hollow inner cavity of the rubber spring.

[0015] Preferably, a plurality of water spray ports are formed on the outer wall of the rubber spring on the side close to the drill bit. The water spray ports are evenly distributed on the outer wall of the rubber spring.

[0016] Preferably, the dust collection device includes a dust collection box, a cleaning hole and a hole cap. The dust collection box is fixedly connected to the lower end of the middle part of the first annular housing. The opening end of the dust collection box penetrates through the first annular housing and extends to the inside. A cleaning hole is formed on the left side wall of the dust collection box. The outer surface of the cleaning hole is provided with threads. A hole cap is arranged at the top of the cleaning hole. The hole cap is threadedly connected to the cleaning hole.

[0017] Preferably, a sliding groove is formed on the outer wall of the second groove. A sliding block is fixedly connected to the outer surface of the left end of the first annular housing. The outer surface of the sliding block is slidably connected to the inner wall of the sliding groove.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. By setting up a cleaning unit, it is possible to collect the powder and dust generated while drilling holes parallel to or upwards from the ground, preventing the dust from scattering everywhere, polluting the environment and causing trouble in cleaning, and also preventing it from being inhaled by the user and harming the lungs. This solves the problem in the prior art that when using an electric hammer, usually a drill bit is directly used to drill holes at the position where drilling is required. During the drilling process, since there is no corresponding protective structure to isolate the dust generated during drilling, and the user is too close to the drilling part when using the electric hammer, there is a certain probability that the dust generated during drilling is inhaled by the user with breathing, endangering the user's physical health.

[0020] 2. By setting up a water injection port and a hollow inner cavity, on the one hand, the weight of the rubber spring is increased, reducing the swing amplitude of the drill bit during operation, thus improving the stability of the drill bit during operation; on the other hand, since the liquid can shake, the vibration generated by the drill bit will be transmitted to the water inside through the rubber spring, relatively reducing the effect on the human hand and playing a role in shock absorption.

[0021] 3. By setting up a water spray port, when constructing, the rubber spring is squeezed. At this time, the water is under pressure, and because the rubber spring has elasticity, the water will flow out from the water injection port under pressure, wetting and aggregating the dust, facilitating the collection of the dust and also facilitating the cleaning of the surface of the rubber spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 is the front view of the present invention;

[0024] Figure 2 is the connection schematic diagram of the rubber spring in the present invention;

[0025] Figure 3 is the internal structure schematic diagram of the cleaning unit in the present invention;

[0026] Figure 4 is the enlarged view of the surface of the rubber spring in the present invention;

[0027] Figure 5 is in the present invention Figure 3 partial enlarged view of part A.

[0028] In the figure: hammer body 1, main grip 2, switch 3, extension section 4, secondary grip 5, protective sleeve 6, fixed sleeve 7, drill bit 8, cleaning unit 9, connecting block 91, rubber spring 92, dust collection device 93, dust collection box 931, cleaning hole 932, hole cap 933, first annular housing 94, second annular housing 95, limit block 96, rotating disk 97, fixed disk 98, annular fixing groove 10, first groove 11, second groove 12, first through hole 13, second through hole 14, water injection port 15, water spray port 16, sliding groove 17, slider 18. Detailed implementation manner

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1 to 5 , the present invention provides a technical solution:

[0031] A shock-absorbing electric hammer includes a hammer body 1. One side of the hammer body 1 is fixedly connected to a main grip 2. A switch 3 is arranged inside the main grip 2. And on the other side of the hammer body 1 is provided an extension section 4. A secondary grip 5 is fixedly installed at a position near the lower end on the outer surface of the extension section 4. On the side of the extension section 4 away from the hammer body 1 is fixedly installed a protective sleeve 6. Inside the other side of the protective sleeve 6 is penetrated and connected with a drill bit 8;

[0032] A cleaning unit 9 is arranged at the left end of the protective sleeve 6 and outside the drill bit 8.

[0033] When using this invention, hold the main grip 2 with one hand and the secondary grip 5 with the other hand. Align the drill bit 8 with the place where construction is required, and turn on the switch 3. At this time, the fixed sleeve 7 will drive the drill bit 8 to rotate for construction. The two grips are set to increase the force-bearing area of the palm, reduce the pressure on the palm during the construction of the electric hammer, protect the palm, and also because of the grasping of the two palms, further increase the stability of the electric hammer during operation;

[0034] At the same time, a cleaning unit 9 is arranged at the left end of the protective sleeve 6 and outside the drill bit 8, which can collect the generated powder dust while drilling parallel to the ground or upward, prevent the dust from scattering everywhere, polluting the environment and causing trouble in cleaning, and can also prevent it from being inhaled by the user and causing harm to the lungs.

[0035] As a specific embodiment of the present invention, the cleaning unit 9 includes: a connecting block 91, a rubber spring 92, a dust collection device 93, a first annular housing 94, a second annular housing 95, a limiting block 96, a rotating disk 97, and a fixed disk 98;

[0036] An annular fixing groove 10 is formed on the outer surface of the fixed sleeve 7, and a connecting block 91 is fixedly installed on the annular fixing groove 10. A rubber spring 92 is fixedly connected to the outer wall of the connecting block 91. The left end of the rubber spring 92 is fixedly connected to the rotating disk 97. A first groove 11 is formed in the right end of the fixed disk 98. The side wall of the first groove 11 is rotationally connected to the side wall of the rotating disk 97 through a bearing, and the left inner wall of the first groove 11 is rotationally connected to the left outer surface of the rotating disk 97;

[0037] The outer right surface of the fixed disk 98 is fixedly connected to a second annular housing 95. A second groove 12 is formed in the right end of the second annular housing 95. The left surface edge of the fixed sleeve 7 is fixedly connected to a first annular housing 94. The left end of the first annular housing 94 is slidably connected to the inner wall of the second groove 12, and the inner surface of the first annular housing 94 is slidably connected to the outer surface of the connecting block 91;

[0038] The lower middle part of the first annular housing 94 is fixedly connected to a dust collection device 93. The opening end of the dust collection device 93 penetrates through the first annular housing 94 and extends to the inside;

[0039] The drill bit 8 sequentially penetrates through the rubber spring 92, the rotating disk 97, and the fixed disk 98 and extends to the outside. The inner wall of the right end of the rubber spring 92 is fixedly connected to the outer surface of the drill bit 8. A first through hole 13 is formed at the position where the rotating disk 97 is penetrated by the drill bit 8, and a second through hole 14 is formed at the position where the fixed disk 98 is penetrated by the drill bit 8.

[0040] When the drill bit 8 rotates for construction, the drill bit 8 will drive the rubber spring 92 to rotate along the axis of the drill bit 8. The outer wall of the left end of the rubber spring 92 fits against the inner wall of the second annular housing 95 and rotates. The right end of the rubber spring 92 will drive the connecting block 91 to rotate along the axis of the drill bit 8. The right end of the connecting block 91 rotates along the inner wall of the annular fixing groove 10. The left end of the rubber spring 92 drives the rotating disk 97 to rotate along the inner wall of the first groove 11 through a bearing;

[0041] The dust and impurities generated during the construction of the drill bit 8 enter the inside of the cleaning unit 9 through the second through hole 14 and the first through hole 13, and are transported to the right through the rotation of the rubber spring 92 and the friction with the second annular housing 95 until they are thrown into the inside of the collection device by centrifugal force, completing the collection work of the dust and impurities;

[0042] During the continuous feeding of the drill bit 8, the hole drilled by the drill bit 8 will become deeper over time. At this time, the construction unit such as the wall will squeeze the fixed disk 98. The fixed disk 98 drives the second groove 12 inside the second annular housing 95 to move horizontally to the right along the outer wall of the left end of the first annular housing 94, so that the transportation of dust can always be inside the space formed by the rubber spring 92 and the second annular housing 95, and the frictional force generated by their contact can be fully utilized for transportation;

[0043] During the process of squeezing the fixed disk 98, the processed unit such as the wall surface will apply a force to squeeze the left end face of the fixed disk 98. At this time, a frictional force will be generated between the processed unit and the left end face of the fixed disk 98, canceling out the tiny frictional force brought by the rotating disk 97 to the fixed disk 98 through the bearing, so that the fixed disk 98 is relatively stationary, and a rotational speed difference is generated between the rubber spring 92 and the second annular housing 95, enabling the smooth transportation of dust impurities;

[0044] And during the squeezing process, the transportation channel of the rubber spring 92 will become narrower and narrower. However, the diameter of the dust is even smaller. Therefore, the increasingly narrow transportation channel of the rubber spring 92 will not affect the transportation of dust;

[0045] By setting the connecting block 91 and the annular fixing groove 10 to fix and limit the rubber spring 92, it is prevented from falling off during the rotation of the drill bit 8, resulting in the interruption of work; the inner side of the right end of the second annular housing 95 is set to be inclined to clean the dust attached to the inner wall of the left end of the first annular housing 94, and under the action of centrifugal force, it is thrown into the collection device, so that the attached dust will not affect the transportation of dust impurities generated by the next drilling.

[0046] As a specific embodiment of the present invention, a hollow inner cavity is provided at the edge part of the rubber spring 92 after being penetrated by the drill bit 8. A water injection port 15 is opened at the left end of the rubber spring 92, and the water injection port 15 is communicated with the hollow inner cavity of the rubber spring 92.

[0047] Before the electric hammer works, an additional water pipe passes through the second through hole 14 and the first through hole 13 and injects water into the hollow inner cavity through the water injection port 15. After the water injection port 15 is filled with water, the water pipe is pulled out and the water injection port 15 is blocked, and the hollow inner cavity stores water; on the one hand, the weight of the rubber spring 92 is increased, reducing the swing amplitude of the drill bit 8 during work, thereby improving the working stability of the drill bit 8; on the other hand, since the liquid can shake, the vibration generated by the drill bit 8 will be transmitted to the water inside through the rubber spring 92, and the effect on the human hand is relatively reduced, playing a role in shock absorption.

[0048] As a specific embodiment of the present invention, a plurality of water spray nozzles 16 are provided on the outer wall of the rubber spring 92 close to the drill bit 8, and the water spray nozzles 16 are evenly distributed on the outer wall of the rubber spring 92.

[0049] When the electric hammer is not working, the water spray nozzle 16 is a thin slit, and the injected water will not flow out of the hollow inner cavity. When constructing, the rubber spring 92 is squeezed. At this time, the water is under pressure, and because the rubber spring 92 has elasticity, the water will be under pressure and flow out from the water injection port 15 to wet and aggregate the dust, facilitating the collection of the dust and also facilitating the cleaning of the surface of the rubber spring 92.

[0050] As a specific embodiment of the present invention, the dust collection device 93 includes a dust collection box 931, a cleaning hole 932 and a hole cap 933. The lower end of the middle part of the first annular outer shell 94 is fixedly connected with the dust collection box 931. The opening end of the dust collection box 931 penetrates through the first annular outer shell 94 and extends to the inside. A cleaning hole 932 is provided on the left side wall of the dust collection box 931. The outer surface of the cleaning hole 932 is provided with threads, and a hole cap 933 is provided at the top of the cleaning hole 932. The hole cap 933 is threadedly connected with the cleaning hole 932.

[0051] When the electric hammer is working, dust will be transported on the surface of the rubber spring 92. When it is transported to the dust collection box 931, the dust is thrown into the dust box by centrifugal force. The left wall of the dust box is inclined, so that when the dust falls into the dust box, it will not return to the cavity formed by the rubber spring 92 and the second annular outer shell 95, playing a role in collection;

[0052] After use, rotate the hole cap 933 to open the cleaning hole 932 to clean the collected dust, providing conditions for the next collection.

[0053] As a specific embodiment of the present invention, a sliding groove 17 is provided on the outer wall of the second groove 12. The left end outer surface of the first annular outer shell 94 is fixedly connected with a sliding block 18, and the outer surface of the sliding block 18 is slidably connected with the inner wall of the sliding groove 17.

[0054] During the use of the electric hammer, by providing the sliding groove 17 and the sliding block 18, the fixing plate 98 is further limited in the horizontal direction, preventing the fixing plate 98 from falling off and also avoiding tensile damage to the rubber spring 92 caused by the weight of the fixing plate 98;

[0055] On the other hand, the rotation is further limited. After this limit, the second annular outer shell 95 cannot rotate, further increasing its rotational speed difference from the rubber spring 92, so that the rubber spring 92 can transport dust impurities by using friction.

[0056] Working principle: When the drill bit 8 rotates for construction, the drill bit 8 drives the rubber spring 92 to rotate along the axis of the drill bit 8. The outer wall of the left end of the rubber spring 92 fits against the inner wall of the second annular housing 95 and rotates. The right end of the rubber spring 92 drives the connecting block 91 to rotate along the axis of the drill bit 8. The right end of the connecting block 91 rotates along the inner wall of the annular fixing groove 10. The left end of the rubber spring 92 drives the rotating disk 97 to rotate along the inner wall of the first groove 11 through a bearing;

[0057] The dust and impurities generated during the construction of the drill bit 8 enter the cleaning unit 9 through the second through hole 14 and the first through hole 13, and are transported to the right through the rotation of the rubber spring 92 and the friction with the second annular housing 95 until they are thrown into the collection device by centrifugal force, completing the collection of dust and impurities;

[0058] During the continuous feeding of the drill bit 8, the hole drilled by the drill bit 8 will become deeper and deeper over time. At this time, the wall and other processed units will squeeze the fixed disk 98. The fixed disk 98 drives the second groove 12 inside the second annular housing 95 to move horizontally to the right along the outer wall of the left end of the first annular housing 94, so that the transportation of dust can always be within the space formed by the rubber spring 92 and the second annular housing 95, and the friction generated by their contact can be fully utilized for transportation;

[0059] During the process of squeezing the fixed disk 98, the wall and other processed units will apply a force to squeeze the left end face of the fixed disk 98. At this time, the processed unit will generate a frictional force with the left end face of the fixed disk 98, offsetting the tiny frictional force brought by the rotating disk 97 to the fixed disk 98 through the bearing, so that the fixed disk 98 is relatively stationary, so that a rotational speed difference is generated between the rubber spring 92 and the second annular housing 95, enabling the dust and impurities to be transported smoothly;

[0060] And during the squeezing process, the transportation channel of the rubber spring 92 will become narrower and narrower, but the diameter of the dust is even smaller. Therefore, the increasingly narrow transportation channel of the rubber spring 92 will not affect the transportation of dust;

[0061] By setting the connecting block 91 and the annular fixing groove 10 to fix and limit the rubber spring 92, it is prevented from falling off during the rotation of the drill bit 8, causing the work to be interrupted; the inner side of the right end of the second annular housing 95 is set to be inclined to clean the dust attached to the inner wall of the left end of the first annular housing 94 and, under the action of centrifugal force, throw it into the collection device, so that the attached dust will not affect the transportation of the dust and impurities generated by the next drilling.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A shock-absorbing electric hammer, comprising a hammer body (1), Characterized in that: One side of the hammer body (1) is fixedly connected to a main grip (2), a switch (3) is arranged inside the main grip (2), and an extension section (4) is arranged on the other side of the hammer body (1). A secondary grip (5) is fixedly installed at a position near the lower end of the outer surface of the extension section (4). A protective sleeve (6) is fixedly installed on the side of the extension section (4) away from the hammer body (1). A fixing sleeve (7) is fixedly installed on the other side of the protective sleeve (6). A drill bit (8) is connected through the inside of the other side of the fixing sleeve (7); A cleaning unit (9) is arranged at the left end of the protective sleeve (6) and outside the drill bit (8); The cleaning unit (9) includes: a connecting block (91), a rubber spring (92), a dust collection device (93), a first annular housing (94), a second annular housing (95), a limiting block (96), a rotating disk (97) and a fixing disk (98); An annular fixing groove (10) is formed on the outer surface of the fixing sleeve (7), a connecting block (91) is fixedly installed on the annular fixing groove (10), a rubber spring (92) is fixedly connected to the outer wall of the connecting block (91), the left end of the rubber spring (92) is fixedly connected to the rotating disk (97), a first groove (11) is formed in the right end of the fixing disk (98), the side wall of the first groove (11) is rotationally connected to the side wall of the rotating disk (97) through a bearing, and the left inner wall of the first groove (11) is rotationally connected to the left outer surface of the rotating disk (97); The outer right surface of the fixing disk (98) is fixedly connected to a second annular housing (95), a second groove (12) is formed in the right end of the second annular housing (95), the edge of the left surface of the fixing sleeve (7) is fixedly connected to a first annular housing (94), the left end of the first annular housing (94) is slidably connected to the inner wall of the second groove (12), and the inner surface of the first annular housing (94) is slidably connected to the outer surface of the connecting block (91); A dust collection device (93) is fixedly connected to the lower end of the middle part of the first annular housing (94), and the opening end of the dust collection device (93) penetrates through the first annular housing (94) and extends to the inside; The drill bit (8) sequentially penetrates through the rubber spring (92), the rotating disk (97) and the fixing disk (98) and extends to the outside. The inner wall of the right end of the rubber spring (92) is fixedly connected to the outer surface of the drill bit (8). A first through hole (13) is formed at the position where the rotating disk (97) is penetrated by the drill bit (8), and a second through hole (14) is formed at the position where the fixing disk (98) is penetrated by the drill bit (8).

2. The shock-absorbing electric hammer according to claim 1, Characterized in that: The edge part of the rubber spring (92) after being penetrated by the drill bit (8) is provided with a hollow inner cavity, and a water injection port (15) is formed at the left end of the rubber spring (92), and the water injection port (15) is communicated with the hollow inner cavity of the rubber spring (92).

3. The shock-absorbing electric hammer according to claim 1, Characterized in that: On the outer wall of the rubber spring (92) close to the drill bit (8), a plurality of water spray nozzles (16) are provided, and the water spray nozzles (16) are evenly distributed on the outer wall of the rubber spring (92).

4. A shock-absorbing electric hammer according to claim 1, characterized in that: The dust collection device (93) includes a dust collection box (931), a cleaning hole (932) and a hole cap (933). The lower end of the middle part of the first annular outer shell (94) is fixedly connected with a dust collection box (931). The opening end of the dust collection box (931) penetrates through the first annular outer shell (94) and extends to the inside. A cleaning hole (932) is provided on the left side wall of the dust collection box (931). The outer surface of the cleaning hole (932) is provided with threads. A hole cap (933) is provided at the top of the cleaning hole (932), and the hole cap (933) is threadedly connected with the cleaning hole (932).

5. A shock-absorbing electric hammer according to claim 1, characterized in that: A sliding groove (17) is provided on the outer wall of the second groove (12). A sliding block (18) is fixedly connected to the outer surface of the left end of the first annular outer shell (94), and the outer surface of the sliding block (18) is slidably connected to the inner wall of the sliding groove (17).

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