Brushless lithium electric hammer with double damping structures

Abstract

The utility model belongs to the technical field of brushless lithium electric hammers, and particularly relates to a brushless lithium electric hammer with a double-damping structure, which comprises an electric hammer body, a damping structure is mounted in the middle of the top of the electric hammer body, a protective structure is mounted on the left side of the bottom of the electric hammer body, and a handheld buffer structure is arranged at the bottom of the right side of the protective structure. And the damping structure comprises a buffering unit and a damping unit, the buffering unit comprises a mounting block, a sliding cylinder is mounted on the right side of the mounting block, a sliding column is mounted at the right end in the sliding cylinder, a first spring is connected to the right end of the sliding cylinder, and an abutting block is mounted at the right end of the sliding column. According to the brushless lithium electric hammer with the double damping structures, through the arrangement of the damping structures and the handheld buffering structures, a sliding column slides in a sliding barrel to extrude a first spring for damping, meanwhile, a linkage plate is used for driving a sliding rod and a friction block to conduct friction sliding in a sliding groove formed in a friction barrel, and counter impact force energy is consumed; therefore, the shock absorption effect on the counter impact force is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of brushless lithium electric hammers, in particular to a brushless lithium electric hammer with a double shock-absorbing structure. Background Art

[0002] Lithium-ion electric hammer is a handheld power tool that uses lithium-ion batteries as a power source. It is a commonly used power tool on the market. Lithium-ion electric hammer is usually used to hit nails, drill holes, and some minor knocking and cutting. Because the impact capacity and speed of lithium-ion electric hammer are very high, it can complete a lot of work in a certain period of time.

[0003] A brushless lithium-electric hammer is an efficient tool for drilling holes in hard materials such as concrete. The brushless lithium-electric hammer powers the motor through a battery pack so that it can be used for a long time. In the prior art, the power-on and power-off method between the hammer and the battery pack is relatively complicated, which brings trouble to the operator.

[0004] As disclosed in Chinese patent CN216760383U, a brushless lithium-ion electric hammer is proposed, which has an electric hammer main body and a battery pack on the electric hammer main body. The battery pack includes a shell with a accommodating cavity, in which a battery assembly is installed through a bracket, a protective plate is installed on the bracket, a socket spring is provided on the protective plate, a plug-in plate for inserting the socket spring is provided on the electric hammer main body, and a limiter is provided in the accommodating cavity, which can be moved to its upper end and extend out of the shell for fixing the battery pack on the electric hammer main body; through the above arrangement, the operation process of powering on and off between the electric hammer main body and the battery pack becomes simple and convenient, thereby ensuring the normal operation of the drilling operation of the electric hammer main body.

[0005] However, in the prior art, when a lithium electric hammer is in use, since the lithium electric hammer completes the operation through impact ability and impact speed, the body of the hammer will vibrate during use. As a result, workers will experience numbness in their hands when holding the lithium electric hammer to perform operations, which may lead to a certain risk of accidental injury.

[0006] For this reason, we urgently need to provide a brushless lithium electric hammer with a double shock-absorbing structure. Utility Model Content

[0007] The purpose of the utility model is to provide a brushless lithium electric hammer with a double shock-absorbing structure to solve the problem in the prior art proposed in the above background technology that during the use of the lithium electric hammer, since the lithium electric hammer completes the operation through impact ability and impact speed, the body of the lithium electric hammer will vibrate during use, thereby causing numbness in the hands of workers when they hold the lithium electric hammer to work, which may lead to a certain risk of accidental injury.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a brushless lithium electric hammer with a double shock-absorbing structure, comprising an electric hammer body, a shock-absorbing structure installed in the middle of the top of the electric hammer body, a protective structure installed on the left side of the bottom of the electric hammer body, and a handheld buffer structure arranged at the bottom right of the protective structure.

[0009] The shock absorbing structure includes a buffer unit and a damping unit.

[0010] The buffer unit includes a mounting block, a slide cylinder is mounted on the right side of the mounting block, a slide column is mounted on the right end of the slide cylinder, a spring 1 is connected to the right end of the slide cylinder, and an abutment block is mounted on the right end of the slide column.

[0011] Preferably, the damping unit includes a connecting plate, a sliding rod is fixedly connected to the left side of the connecting plate, a friction block is fixedly installed on the left end of the outer surface of the sliding rod, a friction cylinder is slidably connected to the outer surface of the friction block, and a linkage plate is fixedly connected to the left end of the friction cylinder.

[0012] Preferably, the end of the spring 1 away from the slide cylinder is fixedly connected to the left side of the abutment block, the outer surface of the slide cylinder is fixedly connected to the inner wall of the circular hole on the left side of the linkage plate, and the outer surface of the friction block is slidably connected to the inside of the slide groove inside the friction cylinder. There is a certain friction between the friction block and the inner wall of the slide groove inside the friction cylinder, so that the impact force of the rebound can be consumed to a certain extent, so as to cooperate with the buffering of the spring 1 to achieve a better shock absorption effect.

[0013] Preferably, the handheld buffer structure includes an electromagnetic coil, a guide rail is provided on the outer surface of the electromagnetic coil, a slider is slidably connected to the middle of the guide rail, two sliders are fixedly connected to a magnetic block on one side close to each other, a spring 2 is fixedly connected to the bottom surface of the magnetic block, a push rod is fixedly installed in the middle of the bottom surface of the magnetic block, and a placement block is fixedly installed at the bottom end of the push rod.

[0014] Preferably, the electromagnetic coil is fixedly installed inside the bottom of the electric hammer body near the left side, and the outer surface of the push rod is slidably connected to the inner wall of a smooth hole opened in the middle of the bottom surface of the left hand-held end of the electric hammer body. The placement block is made of rubber, and the inside of the placement block is hollow, and the middle of the placement block is filled with gas, so that it can achieve a double shock absorption effect during use.

[0015] Preferably, the protective structure includes a rotating shaft, a torsion spring is installed on one end of the front side of the outer surface of the rotating shaft, the end of the torsion spring away from the front side of the rotating shaft is connected to a connecting rod, and the left end of the connecting rod is fixedly connected to a protective cover.

[0016] Preferably, the rotating shaft is fixedly mounted on the top of the left hand-held end at the bottom of the electric hammer body, and the inner wall of the rotating hole at the right end of the connecting rod is rotatably connected to the outer surface of the rotating shaft near the back end. The protective cover is an arc-shaped protective cover, and the size of the protective cover is larger than the size of the hand-held part on the left side of the bottom of the electric hammer body.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The brushless lithium electric hammer with a double shock-absorbing structure, through the setting of the shock-absorbing structure and the handheld buffer structure, utilizes the sliding column to slide inside the sliding cylinder to squeeze the spring 1 for shock absorption, and at the same time utilizes the linkage plate to drive the sliding rod and the friction block to slide frictionally inside the sliding groove provided in the friction cylinder, so as to consume the energy of the counter-impact force, thereby achieving a shock-absorbing effect on the counter-impact force, and at the same time utilizes the mutual repulsion between the electromagnetic coil of the handheld part and the magnetic block, the magnetic block squeezes the spring 2, pushes the push rod and the placement block for secondary shock absorption, and improves the user's operating safety.

[0019] 2. The brushless lithium electric hammer with a double shock-absorbing structure can effectively prevent the splash damage of debris or gravel during the impact process by setting a protective structure and installing a protective cover. At the same time, the setting of a rotating shaft and a torsion spring can effectively buffer the impact force of the splashing gravel to prevent workers from being injured when operating with their hands. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0022] Figure 3 This is an enlarged view of the shock absorbing structure of the utility model;

[0023] Figure 4 This is an enlarged view of the handheld buffer structure of the utility model;

[0024] Figure 5 It is an enlarged view of the protective structure of the utility model.

[0025] In the figure: 1. electric hammer body; 101. mounting block; 102. slide cylinder; 103. slide column; 104. spring one; 105. abutment block; 106. connecting plate; 107. slide rod; 108. friction block; 109. friction cylinder; 110. linkage plate; 201. rotating shaft; 202. torsion spring; 203. connecting rod; 204. protective cover; 301. electromagnetic coil; 302. guide rail; 303. slide block; 304. magnetic block; 305. spring two; 306. push rod; 307. placement block. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-Figure 5 , the utility model provides a technical solution: Example

[0028] A brushless lithium electric hammer with a double shock-absorbing structure comprises an electric hammer body 1, a shock-absorbing structure is installed in the middle of the top of the electric hammer body 1, a protective structure is installed on the left side of the bottom of the electric hammer body 1, and a handheld buffer structure is arranged at the bottom right of the protective structure.

[0029] The shock absorbing structure includes a buffer unit and a damping unit. The buffer unit includes a mounting block 101. A slide cylinder 102 is mounted on the right side of the mounting block 101. A slide column 103 is mounted on the right end of the slide cylinder 102. A spring 104 is connected to the right end of the slide cylinder 102. An abutment block 105 is mounted on the right end of the slide column 103. The damping unit includes a connecting plate 106. A slide rod 107 is fixedly connected to the left side of the connecting plate 106. A friction block 108 is fixedly mounted on the left end of the outer surface of the slide rod 107. A friction cylinder 109 is slidably connected to the outer surface of the friction block 108. A linkage plate 110 is fixedly connected to the left end of the friction cylinder 109.

[0030] The end of spring 104 away from slide cylinder 102 is fixedly connected to the left side of abutment block 105, the outer surface of slide cylinder 102 is fixedly connected to the inner wall of the circular hole on the left side of linkage plate 110, and the outer surface of friction block 108 is slidably connected to the inner side of the slide groove provided inside friction cylinder 109.

[0031] The handheld buffer structure includes an electromagnetic coil 301, a guide rail 302 is arranged on the outer surface of the electromagnetic coil 301, a slider 303 is slidably connected to the middle of the guide rail 302, a magnetic block 304 is fixedly connected to one side of the two sliders 303 close to each other, a spring 2 305 is fixedly connected to the bottom surface of the magnetic block 304, a push rod 306 is fixedly installed in the middle of the bottom surface of the magnetic block 304, and a placement block 307 is fixedly installed at the bottom end of the push rod 306. The electromagnetic coil 301 is fixedly installed inside the bottom near the left side of the electric hammer body 1, and the outer surface of the push rod 306 is slidably connected to the inner wall of a smooth hole opened in the middle of the bottom surface of the left handheld end of the electric hammer body 1.

[0032] By setting up the shock-absorbing structure and the handheld buffer structure, the sliding column 103 is used to slide inside the sliding cylinder 102 to squeeze the spring 104 for shock absorption. At the same time, the linkage plate 110 is used to drive the sliding rod 107 and the friction block 108 to slide frictionally inside the sliding groove opened in the friction cylinder 109 to consume the energy of the counter-impact force, thereby achieving a shock-absorbing effect on the counter-impact force. At the same time, the mutual repulsion between the electromagnetic coil 301 and the magnetic block 304 of the handheld part is utilized, and the magnetic block 304 squeezes the spring 2 305, pushes the push rod 306 and the placement block 307 for secondary shock absorption, thereby improving the user's operating safety.

[0033] When the electric hammer body 1 is used, the reaction force pushes the mounting block 101 and the slide cylinder 102 to move to the right side, so that the slide column 103 slides inside the slide cylinder 102, thereby utilizing the movement of the slide cylinder 102 to squeeze the spring 104 and buffer the counter-impact force. In the process of the slide cylinder 102 moving to the right side, the linkage plate 110 and the friction cylinder 109 are driven to move to the right side, and the friction block 108 is used to open the friction sliding inside the slide groove inside the friction cylinder 109, which can effectively consume the kinetic energy of the counter-impact force, thereby achieving a shock-absorbing effect. At the same time, the handheld part is used to energize the electromagnetic coil 301, so that the electromagnetic coil 301 and the magnetic block 304 produce repelling magnetic poles. In the process of impact, the repulsive force of the magnetic pole is used to push the magnetic block 304 to squeeze the spring 2 305, and the deformation force of the spring 2 305 is used for buffering. At the same time, the magnetic block 304 pushes the push rod 306 and the placement block 307 to buffer and damp the impact force, thereby effectively improving the operation safety. Example

[0034] On the basis of the first embodiment, the protective structure includes a rotating shaft 201, a torsion spring 202 is installed at one end of the front surface of the outer surface of the rotating shaft 201, a connecting rod 203 is connected to the end of the torsion spring 202 away from the front surface of the rotating shaft 201, and a protective cover 204 is fixedly connected to the left end of the connecting rod 203. The rotating shaft 201 is fixedly installed at the top of the left hand-held end at the bottom of the electric hammer body 1, and the inner wall of the rotating hole is provided at the right end of the connecting rod 203 and is rotatably connected to the end of the outer surface of the rotating shaft 201 near the back.

[0035] By setting up the protective structure and installing the protective cover 204, the splash damage of debris or gravel during the impact process can be effectively prevented. At the same time, the setting of the rotating shaft 201 and the torsion spring 202 can effectively buffer the impact force of the splashing gravel and prevent the staff from being injured when operating by hand.

[0036] The gravel generated during the impact process will splash to the left side of the protective cover 204, thereby protecting the hand-held part. At the same time, the impact force of the splashing gravel will drive the connecting rod 203 to rotate when it hits the protective cover 204. The connecting rod 203 causes the torsion spring 202 to generate torsion during the rotation around the rotating axis 201, and the deformation force of the torsion spring 202 is used to make the connecting rod 203 rotate in the opposite direction, thereby driving the protective cover 204 to reset, thereby completing the protection effect on the staff's hands.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A brushless lithium electric hammer with a double shock-absorbing structure, comprising an electric hammer body (1), characterized in that: A shock absorbing structure is installed at the middle of the top of the electric hammer body (1), a protective structure is installed at the left side of the bottom of the electric hammer body (1), and a handheld buffer structure is arranged at the bottom right of the protective structure; The shock absorbing structure includes a buffer unit and a damping unit; The buffer unit comprises a mounting block (101), a slide cylinder (102) is mounted on the right side of the mounting block (101), a slide column (103) is mounted on the right end of the slide cylinder (102), a spring 1 (104) is connected to the right end of the slide cylinder (102), and an abutment block (105) is mounted on the right end of the slide column (103).

2. The brushless lithium electric hammer with a double shock-absorbing structure according to claim 1, characterized in that: The damping unit comprises a connecting plate (106), a sliding rod (107) being fixedly connected to the left side of the connecting plate (106), a friction block (108) being fixedly mounted on the left end of the outer surface of the sliding rod (107), a friction cylinder (109) being slidably connected to the outer surface of the friction block (108), and a linkage plate (110) being fixedly connected to the left end of the friction cylinder (109).

3. The brushless lithium electric hammer with a double shock-absorbing structure according to claim 2, characterized in that: The end of the spring (104) away from the slide cylinder (102) is fixedly connected to the left side of the abutment block (105), the outer surface of the slide cylinder (102) is fixedly connected to the inner wall of the circular hole opened on the left side of the linkage plate (110), and the outer surface of the friction block (108) is slidably connected to the inside of the slide groove opened inside the friction cylinder (109).

4. The brushless lithium electric hammer with a double shock-absorbing structure according to claim 1, characterized in that: The handheld buffer structure comprises an electromagnetic coil (301), a guide rail (302) is arranged on the outer surface of the electromagnetic coil (301), a slider (303) is slidably connected to the middle of the guide rail (302), a magnetic block (304) is fixedly connected to one side of two sliders (303) close to each other, a second spring (305) is fixedly connected to the bottom surface of the magnetic block (304), a push rod (306) is fixedly installed in the middle of the bottom surface of the magnetic block (304), and a placement block (307) is fixedly installed at the bottom end of the push rod (306).

5. The brushless lithium electric hammer with a double shock-absorbing structure according to claim 4, characterized in that: The electromagnetic coil (301) is fixedly mounted inside the bottom of the electric hammer body (1) near the left side, and the outer surface of the push rod (306) is slidably connected to the inner wall of a smooth hole provided in the middle of the bottom surface of the left hand-held end of the electric hammer body (1).

6. The brushless lithium electric hammer with a double shock-absorbing structure according to claim 1, characterized in that: The protective structure comprises a rotating shaft (201), a torsion spring (202) being mounted on one end of the front side of the outer surface of the rotating shaft (201), a connecting rod (203) being connected to one end of the torsion spring (202) away from the front side of the rotating shaft (201), and a protective cover (204) being fixedly connected to the left end of the connecting rod (203).

7. The brushless lithium electric hammer with a double shock-absorbing structure according to claim 6, characterized in that: The rotating shaft (201) is fixedly mounted on the top of the left hand-held end at the bottom of the electric hammer body (1), and the inner wall of the rotating hole is provided at the right end of the connecting rod (203) and is rotatably connected to the outer surface of the rotating shaft (201) near the back end.

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