CN216859625U

CN216859625U - Electric hammer with foldable shoulder support frame

Info

Publication number: CN216859625U
Application number: CN202220624040.3U
Authority: CN
Inventors: 陈杰雄; 方一彬; 胡吕洪; 章江涛
Original assignee: Yongkang Xiaocheng Electric Appliance Co ltd
Current assignee: Yongkang Xiaocheng Electric Appliance Co ltd
Priority date: 2022-03-22
Filing date: 2022-03-22
Publication date: 2022-07-01
Anticipated expiration: 2032-03-22

Abstract

The utility model discloses an electric hammer with a foldable shoulder support frame, which comprises a transmission case, wherein the top of the transmission case is provided with a sleeve, the left end of the sleeve is connected with a valve through threads, and a first support rod is arranged in the sleeve in a sliding manner; a first piston is integrally formed at one end of the first supporting rod, a first sealing ring is installed on the first piston, and a second supporting rod is installed in the first supporting rod in a sliding mode; a second piston is integrally formed at one end of the second supporting rod, a second sealing ring is installed on the second piston, the other end of the second supporting rod is connected with a supporting plate through threads, and a gasket is pasted on the supporting plate. The utility model can reduce the influence of the impact of the electric hammer on the human body by using the air as a buffer medium by virtue of the compressibility of the air; the support frame that adds can contract, is convenient for accomodate and transport after the electric hammer used.

Description

Electric hammer with foldable shoulder support frame

Technical Field

The utility model relates to the technical field of electric tools, in particular to an electric hammer with a foldable shoulder support frame.

Background

The electric hammer is characterized in that a piston driven by a motor and provided with a crankshaft connecting rod is additionally arranged on the basis of an electric drill, air is compressed in a cylinder in a reciprocating mode, air pressure in the cylinder is changed periodically, and the air with the periodically changed pressure drives a hammer in the cylinder to strike the tail of a drill bit in a reciprocating mode to generate an impact effect.

Just because the impact characteristic of electric hammer during operation, need operating personnel to use great strength to stabilize the electric hammer when using, and exert a pressure along the direction of impact, guarantee to strike the effect, traditional electric hammer all is that the front side is provided with a handle, the afterbody is provided with a handle, a handle operation is held to every hand during the use, but because the impact characteristic of electric hammer, the less people of strength can support afterbody handle rear side with shoulder, belly or waist through lying prone before the health and borrow the power, but this can lead to holding the arm on one side of afterbody handle backward bending because of lying prone before the health, can't exert force completely, so need a support that can prolong the electric hammer afterbody, can realize guaranteeing that the arm is in the angle that can normally exert force when borrowing the power through the health.

Through the retrieval, chinese patent application No. 201820269300.3's patent discloses an electric hammer building equipment of collapsible shoulder support frame, including electric hammer host computer, driving motor, bracing piece, electric hammer host computer side is provided with the heat dissipation window, be provided with rotatory ring before the electric hammer host computer, be provided with the support handle under the rotatory ring, be provided with the holder before the rotatory ring, be provided with the dress drilling before the holder, be provided with under the electric hammer host computer driving motor, be provided with thrust handle behind the driving motor, thrust is provided with the power cord under to, thrust is provided with the on & off switch in being provided with, be provided with the center pin behind the electric hammer host computer, be provided with on the center pin the bracing piece, be provided with the shoulder ring behind the bracing piece. The electric hammer building equipment with the foldable shoulder support frame in the patent has the following defects: although the supporting rod capable of adjusting the length is installed at the tail of the electric hammer, the supporting rod is rigidly connected with the body of the electric hammer after being positioned by the positioning pin, so that the impact force of the electric hammer can be directly transmitted to a person through the supporting rod when the electric hammer is used, the body of an operator is uncomfortable and easy to fatigue, and the equipment is also lack of a buffering and damping device.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides an electric hammer with a foldable shoulder support frame.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the electric hammer with the foldable shoulder support frame comprises a transmission case, wherein a sleeve is arranged at the top of the transmission case, the left end of the sleeve is connected with a valve through threads, and a first support rod is arranged in the sleeve in a sliding mode;

a first piston is integrally formed at one end of the first supporting rod, a first sealing ring is installed on the first piston, and a second supporting rod is installed in the first supporting rod in a sliding mode;

one end integrated into one piece of second bracing piece has the second piston, install the second sealing washer on the second piston, the other end of second bracing piece has the backup pad through threaded connection, paste in the backup pad and have the liner.

As a still further scheme of the utility model: the lower part of the transmission case is connected with a motor through a screw, a heat dissipation opening is formed between the transmission case and the motor, and carbon brush mounting holes are formed in two sides of the lower part of the motor.

As a still further scheme of the utility model: the front portion of transmission case is provided with the annular, install the hoop on the annular, the both ends of hoop are connected with straining device, straining device's lower part has the front side handle through threaded connection.

As a still further scheme of the utility model: the quick-change chuck is installed at the foremost end of transmission case, the quick-change chuck is equipped with the dust cover with the junction cover of transmission case.

As a still further scheme of the utility model: the tail of the transmission case is connected with the upper end of a tail handle through a screw, and the lower end of the tail handle is installed on the rear side of the motor through a screw.

As a still further scheme of the utility model: a switch is installed in a vertical section of the tail handle, and the button direction of the switch faces to the front side.

As a still further scheme of the utility model: and a carbon brush is arranged in the carbon brush mounting hole, and one end of the carbon brush is connected to a stator armature of the motor in a sliding manner.

As a still further scheme of the utility model: the other end of the carbon brush is electrically connected to the switch, and the switch is electrically connected with a power line.

The utility model has the beneficial effects that:

1. by means of the compressibility of the air and the utilization of the air as a buffer medium, the influence of the impact of the electric hammer on a human body can be reduced.

2. Through setting up flexible strutting arrangement, can realize additionally setting up supporting mechanism at the electric hammer afterbody for the arm still can be in the position of being convenient for to exert oneself when borrowing the power with the shoulder.

3. The support frame that adds can contract, is convenient for accomodate and transport after the electric hammer used.

Drawings

Fig. 1 is a schematic view showing the overall structure of an electric hammer having a foldable shoulder support according to the present invention;

FIG. 2 is a schematic structural diagram of a hammer body of an electric hammer with a foldable shoulder support frame according to the present invention;

fig. 3 is a schematic view of a first support rod structure of an electric hammer with a foldable shoulder support frame according to the present invention;

fig. 4 is a schematic view of a second support rod structure of the electric hammer with a foldable shoulder support frame according to the present invention;

fig. 5 is a schematic view illustrating a fully opened state of a support frame of an electric hammer having a foldable shoulder support frame according to the present invention.

In the figure: the quick-change carbon brush tensioning device comprises a transmission case 1, a motor 2, a carbon brush mounting hole 3, a heat dissipation port 4, a tail handle 5, a switch 6, an iron hoop 7, a tensioning device 8, a front handle 9, a quick-change chuck 10, a sleeve 11, a valve 12, a first supporting rod 13, a first piston 14, a first sealing ring 15, a second supporting rod 16, a second piston 17, a second sealing ring 18, a supporting plate 19, a gasket 20 and a dust cover 21.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

The electric hammer with the foldable shoulder support frame, as shown in fig. 1-5, comprises a transmission case 1, the material of the transmission case 1 is not limited, and can be various materials with enough strength, in the embodiment, a cast aluminum material is preferred; use cast aluminium material can make to equip the lightweight on the one hand when guaranteeing intensity, and on the other hand can be with in time leading-in air of the heat that produces in the transmission case 1, the lubricated effect of grease lubricant in the transmission case 1 of assurance.

The top of the transmission case 1 is provided with a sleeve 11, and the sleeve 11 can be integrally formed with the transmission case 1 in the casting stage, so that the material of the sleeve 11 is the same as that of the transmission case 1; the sleeve 11 can be made of different materials in a split mode, and then the sleeve 11 is fixed on the transmission case 1 through connecting pieces such as screws and the like;

in this embodiment, preferably, the transmission case 1 is integrally cast, and the integrally cast structure not only has high connection strength, but also has a larger heat dissipation area.

The sleeve 11 is a tubular structure, the left end of the sleeve is connected with a valve 12 through threads, and the diameter of an internal cavity of the sleeve 11 is larger than the aperture of an opening at the right end of the sleeve;

a first supporting rod 13 is slidably mounted in the sleeve 11, the first supporting rod 13 is also of a tubular structure, the diameter of an internal cavity of the first supporting rod 13 is larger than the aperture of an opening at the right end of the first supporting rod 13, a first piston 14 is integrally formed at one end of the first supporting rod 13, the diameter of the first piston 14 is slightly larger than the rod diameter of the first supporting rod 13, the first piston 14 is of a tubular structure, an annular groove is formed in the first piston 14, a first sealing ring 15 is mounted in the annular groove, and the first sealing ring 15 has wear-resistant and heat-resistant characteristics;

a second supporting rod 16 is slidably mounted inside the first supporting rod 13, the second supporting rod is a solid rod, a second piston 17 is integrally formed at one end of the second supporting rod 16, the diameter of the second piston 17 is slightly larger than that of the second supporting rod 16, an annular groove is formed in the second piston 17, a second sealing ring 18 is mounted in the annular groove, the second sealing ring 18 has wear-resistant and heat-resistant characteristics, and a supporting plate 19 is connected to the other end of the second supporting rod 16 through threads.

The first piston 14 is slidably connected in the cavity of the sleeve 11, the first support rod 13 is slidably connected in the right inner hole of the sleeve 11, and the first seal ring 15 is elastically connected between the sleeve 11 and the first piston 14; the second piston 17 is slidably connected to the inner cavity of the first support rod 13, and the second support rod 16 is slidably connected to the right inner hole of the first support rod 13.

The supporting plate 19 is adhered with a pad 20, the pad 20 is made of soft non-slip material to play a role of anti-slip and anti-collision, and the material of the pad 20 may be silica gel, sponge, felt, etc., in this embodiment, the material of silica gel is preferred.

The lower part of transmission case 1 has motor 2 through the screw connection, be provided with thermovent 4 between transmission case 1 and the motor 2, be provided with heat dissipation impeller in the thermovent 4, heat dissipation impeller is fixed in motor 2's the pivot, motor 2's lower part both sides are provided with carbon brush mounting hole 3, install the carbon brush in the carbon brush mounting hole 3, and the carbon brush is the part of easy loss among the brush electric tool, can conveniently carry out the change of carbon brush through setting up carbon brush mounting hole 3, the one end sliding connection of carbon brush is on motor 2's stator armature.

The front portion of transmission case 1 is provided with the annular, annular integrated into one piece is on the anterior periphery of transmission case 1, install hoop 7 on the annular, hoop 7's both ends are connected with straining device 8, there is front side handle 9 straining device 8's lower part through threaded connection, and the screw-thread fit of straining device 8 and front side handle 9 can realize the tight regulation to hoop 7, and then conveniently adjusts the angle of front side handle 9.

The rear portion of transmission case 1 has the upper end of afterbody handle 5 through screwed connection, the lower extreme of afterbody handle 5 passes through the screw installation in the rear side of motor 2, install switch 6 in the vertical one section of afterbody handle 5, switch 6 is the inching switch, switch 6's button direction is to the front side.

Quick change chuck 10 is installed to the foremost end of transmission case 1, can improve the speed of changing the impact head through setting up quick change chuck 10, the junction cover of quick change chuck 10 and transmission case 1 is equipped with dust cover 21, can prevent through setting up dust cover 21 that the dust etc. that produce from getting into in the transmission case 1 in the work progress, and then influence the life of device.

The other end of the carbon brush is electrically connected to a switch 6, and the switch 6 is electrically connected to a power line.

The working principle is as follows: when the quick-change chuck is used, a proper tool is clamped by the quick-change chuck 10, the valve 12 is opened, the supporting plate 19 is pulled to drive the first supporting rod 13 and the second supporting rod 16 to slide out to a length suitable for self operation, the supporting plate is continuously drawn out for a short distance (5-10 cm), the position of the supporting plate 19 is kept still, and the valve 12 is closed.

The electric hammer is powered on, the front side handle 9 is held by the left hand, the tail handle 5 is held by the right hand, the supporting plate is placed in the right shoulder socket, and the switch 6 can be pressed down by the index finger of the right hand to start working. When the electric hammer works, impact force is generated by the electric hammer, and the air in the sleeve 11 and the first supporting rod 13 with compressibility is compressed when the direction of the impact force is towards a human body, and is recovered when no impact occurs, so that the electric hammer can play a role of buffering like a spring, and the vibration of the human body is reduced.

After the use, the valve 12 is opened, the first support rod 13 and the second support rod 16 are pushed back into the sleeve 11, the valve 12 is closed, the folding action is completed, and the occupied space of the device is reduced.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The electric hammer with the foldable shoulder support frame comprises a transmission case (1) and is characterized in that a sleeve (11) is installed at the top of the transmission case (1), the left end of the sleeve (11) is connected with a valve (12) through threads, and a first support rod (13) is installed in the sleeve (11) in a sliding mode;

a first piston (14) is integrally formed at one end of the first supporting rod (13), a first sealing ring (15) is installed on the first piston (14), and a second supporting rod (16) is installed in the first supporting rod (13) in a sliding mode;

one end integrated into one piece of second bracing piece (16) has second piston (17), install second sealing washer (18) on second piston (17), there is backup pad (19) the other end of second bracing piece (16) through threaded connection, it has liner (20) to paste on backup pad (19).

2. The electric hammer with the foldable shoulder supporting frame according to claim 1, wherein the lower part of the transmission case (1) is connected with the motor (2) through a screw, a heat dissipation port (4) is arranged between the transmission case (1) and the motor (2), and carbon brush mounting holes (3) are arranged on two sides of the lower part of the motor (2).

3. The electric hammer with the foldable shoulder supporting frame is characterized in that the front part of the transmission case (1) is provided with a ring groove, an iron hoop (7) is installed on the ring groove, two ends of the iron hoop (7) are connected with a tensioning device (8), and the lower part of the tensioning device (8) is connected with a front side handle (9) through threads.

4. An electric hammer with a foldable shoulder support frame according to claim 3, characterized in that the foremost end of the transmission case (1) is provided with a quick-change chuck (10), and a dust cover (21) is sleeved at the joint of the quick-change chuck (10) and the transmission case (1).

5. An electric hammer with foldable shoulder supporting frame according to claim 4, characterized in that the tail of the transmission case (1) is connected with the upper end of a tail handle (5) through screws, and the lower end of the tail handle (5) is installed at the rear side of the motor (2) through screws.

6. An electric hammer with foldable shoulder support according to claim 5, characterized in that the vertical section of the tail handle (5) is equipped with a switch (6), and the button direction of the switch (6) is toward the front side.

7. The electric hammer with foldable shoulder support frame according to claim 6, wherein a carbon brush is installed in the carbon brush installation hole (3), and one end of the carbon brush is slidably connected to a stator armature of the motor (2).

8. The electric hammer with foldable shoulder support stand according to claim 7, wherein the other end of the carbon brush is electrically connected to a switch (6), and the switch (6) is electrically connected to a power cord.