CN219275753U

CN219275753U - Electric hammer with damping function

Info

Publication number: CN219275753U
Application number: CN202320500935.0U
Authority: CN
Inventors: 王庆湘; 胡纪斌; 王国栋
Original assignee: Yongkang Jiazheng Technology Co ltd
Current assignee: Yongkang Jiazheng Technology Co ltd
Priority date: 2023-03-15
Filing date: 2023-03-15
Publication date: 2023-06-30
Anticipated expiration: 2033-03-15

Abstract

The utility model discloses an electric hammer with a damping function, which comprises a front hammer body and a rear shell which are connected in a sliding way, wherein a limiting mechanism for limiting the sliding stroke of the front hammer body and the rear shell and a buffer mechanism for reducing vibration between the front hammer body and the rear shell are arranged between the front hammer body and the rear shell, the buffer mechanism comprises an abutting frame arranged in the rear shell and a buffer spring arranged on the front hammer body, the end part of the buffer spring abuts against the abutting frame, and the buffer spring coincides with the axial lead of a hammer shaft of the front hammer body. The buffer spring is positioned in the rear shell and is overlapped with the axis of the hammer shaft, and the structure can avoid the unilateral stress of the rear shell, so that the problem that friction is increased or even the shell is blocked due to the included angle formed by rotation between the front hammer body and the rear shell is avoided.

Description

Electric hammer with damping function

Technical Field

The utility model relates to an electric hammer, in particular to an electric hammer with a damping function.

Background

When the general electric hammer or electric pick works, vibration frequency can be generated, so that hands of workers are easy to be numb and tired, and particularly, the operation difficulty of the electric hammer or electric pick with high power is obviously increased.

Aiming at the problems, the prior art discloses an electric hammer with a damping function, which comprises an electric hammer main body, wherein the electric hammer main body comprises a buffer body and a rear hammer body; the buffer body is slidably connected with the rear hammer body through an elastic limiting device, the elastic limiting device comprises an elastic device, the elastic device comprises at least one limiting groove, at least one limiting column and at least one elastic piece, and the limiting groove, the limiting column and the elastic piece are arranged in a one-to-one correspondence mode.

The buffer spring is arranged on one side of the hammer body although the buffer function is achieved, and the single-side stress of the buffer body can cause relative rotation between the buffer body and the rear hammer body in the sliding process, so that friction between the buffer body and the rear hammer body is increased, even the case of clamping is caused, and the damping effect is seriously affected.

Disclosure of Invention

Based on the defects of friction and even clamping caused by single-side stress in the prior art, the utility model provides an electric hammer with a damping function.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides an electric hammer with shock-absorbing function, includes sliding connection's preceding hammer block and back casing, is equipped with the stop gear who is used for restricting the slip stroke of both and is used for reducing the buffer gear of vibrations between the two between preceding hammer block and the back casing, buffer gear is including setting up in the back casing support and lean on the frame and set up the buffer spring on preceding hammer block, and buffer spring's tip supports and leans on to lean on the frame, wherein buffer spring and preceding hammer block hammer shaft's axial lead coincidence.

The further preferable technical scheme of the utility model is as follows: the rear end of the front hammer body stretches into the rear shell, a sliding groove sliding table matched with each other is arranged between the front hammer body and the rear shell, the front hammer body and the rear shell slide through the matching of the sliding groove sliding table, and the sliding direction is parallel to the extending direction of the hammer shaft.

The further preferable technical scheme of the utility model is as follows: the limiting mechanism is a baffle plate arranged on the front side and the rear side of the chute, and the sliding table slides between the two baffle plates.

The further preferable technical scheme of the utility model is as follows: the limiting mechanism comprises a limiting column arranged on the rear shell and a limiting hole arranged on the front hammer body, and the limiting column extends into the limiting hole.

The further preferable technical scheme of the utility model is as follows: the limiting hole is a runway-shaped hole or a strip-shaped hole, and the extending direction of the limiting hole is parallel to the axial direction of the hammer shaft.

The further preferable technical scheme of the utility model is as follows: the two limiting holes and the two limiting columns are symmetrically arranged about the hammer axis; the rear shell is also provided with two slots, and the two limiting posts respectively pass through one limiting hole and extend into the slots.

The further preferable technical scheme of the utility model is as follows: the mounting posts are cylindrical or cross-shaped and have a length less than the depth of the mounting hole.

The further preferable technical scheme of the utility model is as follows: the rear shell comprises a left shell and a right shell which are detachably connected through bolts, and the limiting column and the leaning frame are arranged in the left shell or the right shell.

Compared with the prior art, the utility model has the advantages that: the buffer spring is positioned in the rear shell and is overlapped with the axis of the hammer shaft, and the structure can avoid the unilateral stress of the rear shell, so that the problem that friction is increased or even the shell is blocked due to the included angle formed by rotation between the front hammer body and the rear shell is avoided.

Drawings

The utility model will be described in further detail below in connection with the drawings and the preferred embodiments, but it will be appreciated by those skilled in the art that these drawings are drawn for the purpose of illustrating the preferred embodiments only and thus should not be taken as limiting the scope of the utility model. Moreover, unless specifically indicated otherwise, the drawings are merely schematic representations, not necessarily to scale, of the compositions or constructions of the described objects and may include exaggerated representations.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the rear housing;

FIG. 3 is an enlarged view of FIG. 2 at A;

FIG. 4 is a schematic view of the right housing;

FIG. 5 is a schematic view of a partial structure of the front hammer;

in the figure: 1. a front hammer body; 101. a limiting hole; 102. a sliding table; 1021. a bar-shaped groove; 2. a rear housing; 201. a left housing; 202. a limit column; 203. an abutment frame; 204. a mounting hole; 205. a return spring; 206. a mounting column; 207. a right housing; 2071. a chute; 208. a slot.

Detailed Description

Preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely illustrative, exemplary, and should not be construed as limiting the scope of the utility model.

Examples

1-3, including sliding connection's preceding hammer block 1 and back casing 2, be equipped with between preceding hammer block 1 and the back casing 2 and be used for limiting the stop gear of both sliding strokes and be used for reducing the buffer gear of vibrations between the two, buffer gear includes the support frame 203 that supports that sets up in back casing 2 and the buffer spring that sets up on preceding hammer block 1, and buffer spring's tip supports and leans on support frame 203, wherein buffer spring and the coincidence of the axial lead of preceding hammer block 1 hammer shaft.

Specifically, the rear end of the front hammer body 1 extends into the rear shell 2, a sliding groove 2071 and a sliding table 102 which are matched with each other are arranged between the front hammer body 1 and the rear shell 2, the front hammer body 1 and the rear shell 2 slide through the matching of the sliding groove 2071 and the sliding table 102, and the sliding direction is parallel to the extending direction of the hammer shaft.

The limiting mechanism comprises the following two schemes

Scheme one: the limiting mechanism is a baffle plate arranged on the front side and the rear side of the chute 2071, and the sliding table 102 slides between the two baffle plates.

Scheme II: as shown in fig. 2, the limiting mechanism includes a limiting post 202 disposed on the rear housing 2 and a limiting hole 101 disposed on the front hammer 1, and the limiting post 202 extends into the limiting hole 101.

Further, two limiting holes 101 and two limiting columns 202 are arranged, and the two limiting holes 101 are symmetrically arranged about the hammer axis; two slots 208 are also provided on the rear housing 2, and two stopper posts 202 each pass through one stopper hole 101 and extend into the slots 208.

Further, the limiting hole 101 is a racetrack hole or a strip hole, and the extending direction of the limiting hole 101 is parallel to the axial direction of the hammer shaft.

Buffer spring mounting structure:

as shown in fig. 3, the rear end of the front hammer body 1 is provided with a mounting hole 204, a mounting post 206 is arranged in the mounting hole 204, and a return spring 205 is sleeved on the mounting post 206. The mounting post 206 is cylindrical or cross-shaped and has a length less than the depth of the mounting hole 204. The rear end surface of the front hammer body 1 is a plane, and the abutting frame 203 comprises an abutting plate which is arranged in parallel with the rear end surface of the front hammer body 1 and a plurality of reinforcing plates which are arranged vertically to the abutting plate; when the buffer spring is compressed, the buffer spring is propped against the propping plate to play a role in damping, and after the buffer spring is blocked and compressed to a certain extent, the rear end face of the front hammer body 1 is propped against the propping plate to avoid the buffer transition to influence the normal operation of the electric hammer.

Rear housing 2 part:

as shown in fig. 2, 4, 5, the rear housing 2 includes a left housing 201 and a right housing 207 detachably connected by bolts, and a stopper post 202 and an abutment frame 203 are provided in the left housing 201 or the right housing 207. In addition, after the two parts of shells are installed, the part of the front hammer body 1 extending into the front hammer body is wrapped, the left shell 207 and the right shell 207 are respectively provided with a sliding groove 2071 or a sliding table 102, the corresponding front hammer body 1 is provided with the sliding table 102 or the sliding groove 2071, and the sliding table 102 or the sliding groove 2071 not only ensures that the front hammer body 1 axially slides along the hammer shaft relative to the rear shell 2, but also ensures that the front hammer body 1 does not rotate relative to the rear shell 2. The sliding table 102 is provided with a strip-shaped groove 1021, and a cylindrical movable column is arranged in the strip-shaped groove 1021.

In addition, the rear housing 2 forms a handle to be held, and the surface of the holding part of the handle is provided with grooves and is filled with elastic rubber materials, so that the damping effect is further improved, and the holding comfort is improved. The rear shell 2 is also internally provided with a control board, the bottom of the rear shell 2 is provided with a lithium battery mounting slot 208, the holding part is provided with a switch, and the lithium battery, the control board, the switch and the motor in the front hammer body 1 are electrically connected through a power line arranged in the rear shell 2.

Further, two limiting posts 202 are respectively disposed on the left housing 201 and the right housing 207, and a slot 208 is respectively disposed on the left housing 207 and the right housing 207, and the two limiting posts 202 pass through the limiting hole 101 and extend into the slot 208.

Front hammer body part:

the front hammer body 1 includes an external fixed housing, a motor, a hammer shaft, an impact mechanism driven by the hammer shaft, and the like, and a limit hole 101 and a mounting hole 204 are provided at the rear end of the fixed housing.

The electric hammer with damping function provided by the utility model is described above, and specific examples are applied to illustrate the principle and the implementation mode of the utility model, and the description of the examples is only used for helping to understand the utility model and the core idea. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims

1. The utility model provides an electric hammer of shock-absorbing function, includes sliding connection's preceding hammer block and back casing, is equipped with between preceding hammer block and the back casing and is used for limiting both sliding travel's stop gear and is used for reducing the buffer gear of vibrations between the two, its characterized in that: the buffer mechanism comprises an abutting frame arranged in the rear shell and a buffer spring arranged on the front hammer body, wherein the end part of the buffer spring abuts against the abutting frame, and the buffer spring is overlapped with the axis line of the hammer shaft of the front hammer body.

2. The electric hammer with a vibration absorbing function according to claim 1, wherein: the rear end of the front hammer body stretches into the rear shell, a sliding groove sliding table matched with each other is arranged between the front hammer body and the rear shell, the front hammer body and the rear shell slide through the matching of the sliding groove sliding table, and the sliding direction is parallel to the extending direction of the hammer shaft.

3. The electric hammer with a vibration absorbing function according to claim 2, wherein: the sliding groove and the sliding table are circumferentially provided with a plurality of groups along the front hammer body.

4. The electric hammer with a vibration reduction function according to claim 2 or 3, wherein: the limiting mechanism is a baffle plate arranged on the front side and the rear side of the chute, and the sliding table slides between the two baffle plates.

5. The electric hammer with a vibration absorbing function according to claim 1 or 2, characterized in that: the limiting mechanism comprises a limiting column arranged on the rear shell and a limiting hole arranged on the front hammer body, and the limiting column extends into the limiting hole.

6. The electric hammer with vibration reduction function according to claim 5, wherein: the two limiting holes and the two limiting columns are symmetrically arranged about the hammer axis; the rear shell is also provided with two slots, and the two limiting posts respectively pass through one limiting hole and extend into the slots.

7. The electric hammer with vibration reduction function according to claim 5, wherein: the limiting hole is a runway-shaped hole or a strip-shaped hole, and the extending direction of the limiting hole is parallel to the axial direction of the hammer shaft.

8. The electric hammer with a vibration absorbing function according to claim 1, wherein: the rear end part of the front hammer body is provided with a mounting hole, a mounting column is arranged in the mounting hole, and a reset spring is sleeved on the mounting column.

9. The electric hammer with vibration reduction function according to claim 8, wherein: the mounting posts are cylindrical or cross-shaped and have a length less than the depth of the mounting hole.

10. The electric hammer with a vibration absorbing function according to claim 1, wherein: the rear shell comprises a left shell and a right shell which are detachably connected through bolts, and the limiting column and the leaning frame are arranged in the left shell or the right shell.