CN209774560U

CN209774560U - Heavy electric hammer

Info

Publication number: CN209774560U
Application number: CN201920689092.7U
Authority: CN
Inventors: 王腾达; 何建强; 严世良; 徐慷; 安刚利; 李小健
Original assignee: Jinhua Poly Electric Appliance Co Ltd
Current assignee: Jinhua Poly Electric Appliance Co Ltd
Priority date: 2019-05-14
Filing date: 2019-05-14
Publication date: 2019-12-13
Anticipated expiration: 2029-05-14

Abstract

The utility model discloses a heavy electric hammer, including stator gland, bearing gland, inside assembly and two half section formula shells that set up along the axis symmetry of inside assembly, inside assembly includes transmission case, middle lid, rotor, stator and rotor rear bearing, transmission case and middle lid joint and respectively with half section formula shell detachable fixed connection, stator gland and half section formula shell detachable fixed connection are in order to fix the stator, bearing gland and half section formula shell detachable fixed connection are in order to fix the rotor rear bearing. Use the utility model provides a heavy electric hammer, transmission case and middle cover respectively with half section type shell detachable fixed connection, stator gland, bearing gland respectively with half section type shell detachable fixed connection, through inside assembly each part respectively with half section type shell respectively fixed realization assembly, avoid inside assembly and motor dislocation, improve the uniformity of assembly precision and assembly.

Description

Heavy electric hammer

Technical Field

The utility model relates to an electric tool field, more specifically say, relate to a heavy electric hammer.

Background

The heavy electric hammer is usually designed into a plurality of component combinations, and comprises machine body parts such as an output part, a transmission part, a motor part, a control handle and the like, the appearance design is single, the wall thickness of a formed part is uneven, the appearance is poor (particularly a plastic part), the heavy electric hammer is mainly reflected in the connecting position of a machine shell and the handle, the demoulding direction of the heavy electric hammer is opposite to the shape of the machine shell, the local thickness is thicker, and the part generates appearance defects such as reinforced fiber exposure (silk exposure for short) and obvious sink marks after injection moulding, so that the appearance is poor; when a common heavy electric hammer is assembled, an output and transmission part is assembled firstly, and then the lower part of the transmission part is connected with a motor with an external shell, so that the connection links are more, and the defects of larger dislocation between an internal assembly and the shell, higher noise, reduced transmission precision, short service life and the like are caused; complex assembly and the like.

SUMMERY OF THE UTILITY MODEL

in view of this, an object of the present invention is to provide a heavy electric hammer to solve the problems of large misalignment between the inner assembly and the outer casing, high noise, low transmission precision, etc. in the conventional electric hammer assembly.

in order to achieve the above object, the utility model provides a following technical scheme:

The utility model provides a heavy electric hammer, includes stator gland, bearing gland, inside assembly and edge two half section formula shells that the axis symmetry of inside assembly set up, inside assembly includes transmission case, middle lid, rotor, stator and rotor rear bearing, the transmission case with middle lid fixed connection and respectively with half section formula shell detachable fixed connection, the stator gland with half section formula shell detachable fixed connection is with right the stator is fixed, the bearing gland with half section formula shell detachable fixed connection is with right the rotor rear bearing fixes.

preferably, the middle cover is provided with a limiting protrusion, one end of the transmission case, which is in contact with the middle cover, is provided with a limiting groove matched with the limiting protrusion, the limiting protrusion is symmetrically arranged along the two sides of the axis of the middle cover, and the transmission case and the middle cover are provided with a threaded part for fixing the transmission case and the middle cover.

Preferably, a plurality of mounting holes for fixing are correspondingly formed between the transmission case and the half-section type shell one by one.

Preferably, the stator gland with be equipped with between the half section formula shell and compress tightly the piece, the stator gland with be equipped with the screw between the half section formula shell, the screw link up compress tightly the piece.

Preferably, the pressing pieces are pressing strips or pressing plates, and the number of the pressing strips or the pressing plates is multiple.

preferably, a flange portion is arranged on the stator core, and the flange portion is arranged between the pressing piece and the half-section type shell.

The utility model provides a heavy electric hammer, including stator gland, bearing gland, inside assembly and two half section formula shells that set up along the axis symmetry of inside assembly, inside assembly includes transmission case, middle lid, rotor, stator and rotor rear bearing, transmission case and middle lid joint and respectively with half section formula shell detachable fixed connection, stator gland and half section formula shell detachable fixed connection are in order to fix the stator, bearing gland and half section formula shell detachable fixed connection are in order to fix the rotor rear bearing.

By applying the heavy electric hammer provided by the utility model, the transmission case and the middle cover are respectively and fixedly connected with the half-section type shell, the stator gland and the bearing gland are respectively and fixedly connected with the half-section type shell, and the assembly is realized by respectively fixing each part of the internal assembly and the half-section type shell, so that the dislocation of the internal assembly and the motor is avoided, the assembly precision and the assembly consistency are improved, the transmission is more stable, and the noise is low; and the half-section type shell and the demoulding direction copper wire of the injection molding process have uniform wall thickness, solve the phenomenon of bad appearance, and simultaneously, the shape and the mode of the appearance combination are more, and the structure is easy to arrange.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic front view of a heavy electric hammer according to an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of an inner assembly according to an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a stator gland provided in an embodiment of the present invention;

Fig. 4 is a schematic structural diagram of a bearing gland provided in an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of FIG. 1;

FIG. 6 is a schematic view of the structure of FIG. 5 along the line A-A;

FIG. 7 is a schematic view of the structure of FIG. 5 along the line B-B;

FIG. 8 is a schematic view of the structure of FIG. 5 along direction C-C;

FIG. 9 is a schematic view of the structure of FIG. 5 taken along direction D-D;

FIG. 10 is a schematic view of the structure of FIG. 5 taken along direction E-E;

FIG. 11 is a schematic view of the structure of FIG. 5 in the direction F-F;

FIG. 12 is a schematic view of the structure of FIG. 5 along direction G-G;

FIG. 13 is a schematic view of the structure of FIG. 5 in the direction H-H;

fig. 14 is a schematic structural diagram of a pressing member according to an embodiment of the present invention.

The drawings are numbered as follows:

the device comprises an inner assembly 1, a shell 2, a stator gland 3, a bearing gland 4 and a pressing piece 5;

Half-section type shell 21, transmission case 11, intermediate cover 12, rotor 13 and stator 14.

Detailed Description

The embodiment of the utility model discloses heavy electric hammer to inside assembly is great with the shell dislocation when solving current electric hammer equipment, the noise is big and transmission precision hangs down the scheduling problem.

the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 14, fig. 1 is a schematic front view of a heavy electric hammer according to an embodiment of the present invention; fig. 2 is a schematic structural diagram of an inner assembly according to an embodiment of the present invention; fig. 3 is a schematic structural diagram of a stator gland provided in an embodiment of the present invention; fig. 4 is a schematic structural diagram of a bearing gland provided in an embodiment of the present invention; FIG. 5 is a schematic cross-sectional view of FIG. 1; FIG. 6 is a schematic view of the structure of FIG. 5 along the line A-A; FIG. 7 is a schematic view of the structure of FIG. 5 along the line B-B; FIG. 8 is a schematic view of the structure of FIG. 5 along direction C-C; FIG. 9 is a schematic view of the structure of FIG. 5 taken along direction D-D; FIG. 10 is a schematic view of the structure of FIG. 5 taken along direction E-E; FIG. 11 is a schematic view of the structure of FIG. 5 in the direction F-F; FIG. 12 is a schematic view of the structure of FIG. 5 along direction G-G; FIG. 13 is a schematic view of the structure of FIG. 5 in the direction H-H; fig. 14 is a schematic structural diagram of a pressing member according to an embodiment of the present invention.

In a specific embodiment, the utility model provides a heavy electric hammer, including stator gland 3, bearing gland 4, inside assembly 1 and two half section formula shells 21 that set up along the axis symmetry of inside assembly 1, inside assembly 1 includes the transmission case, middle lid 12, rotor 13, stator 14 and rotor rear bearing, transmission case and middle lid 12 joint and respectively with half section formula shell 21 detachable fixed connection, stator gland 3 and half section formula shell 21 detachable fixed connection are in order to fix stator 14, bearing gland 4 and half section formula shell 21 detachable fixed connection are in order to fix the rotor rear bearing. Wherein the above-mentioned devices are all preferably arranged on the same half-section housing 21.

The half-section type shell 21 is symmetrically arranged along the axis of the inner assembly 1, the two half-section type shells 21 form a shell 2, the inner assembly 1 is arranged in the shell 2, the two half-section type shells 21 are detachably and fixedly connected to realize assembly, wherein, a stator gland 3 fixes a stator 14 which is detachably and fixedly connected with the half-section type shells 21, a rotor rear bearing is fixed by a bearing gland 4 and the half-section type shells 21, the rotor rear bearing is connected with a rotor 13, the concrete structure and the connection relation thereof can refer to the prior art, and the transmission case, the middle cover 12, the rotor 13, the stator 14, the stator gland 3 and the bearing gland 4 are the existing mechanical equipment, the main improvement point of the utility model lies in that each structure of the inner assembly 1 is respectively fixed with the half-section type shells 21 to avoid the dislocation of the inner assembly 1 and the motor and improve the transmission precision, the noise is reduced.

Wherein, transmission case and middle lid 12 fixed connection, preferably detachable fixed connection, realize fixedly like the mode of accessible draw-in groove and buckle, or in an embodiment, also can fix through the form of pegging graft, transmission case and middle lid 12 respectively with half section formula shell 21 detachable fixed connection, here and below detachable fixed connection mode can preferably be threaded connection, realize the fixed of the two through setting up screw or bolt etc. its fixed mode can be selected according to actual need, as long as can reach the same technological effect can, do not restrict specific implementation mode.

By applying the heavy electric hammer provided by the utility model, the transmission case and the middle cover 12 are respectively and fixedly connected with the half-section type shell 21 in a detachable way, the stator gland 3 and the bearing gland 4 are respectively and fixedly connected with the half-section type shell 21 in a detachable way, and the assembly is realized by respectively fixing each part of the inner assembly 1 and the half-section type shell 21, thereby avoiding the dislocation of the inner assembly 1 and the motor, improving the assembly precision and the assembly consistency, and having more stable transmission and low noise; and the half-section type shell 21 and the copper wire in the demoulding direction of the injection molding process have uniform wall thickness, solve the phenomenon of bad appearance, and simultaneously have more shapes and modes of appearance combination and are easy to arrange structurally.

specifically, the middle cover 12 is provided with a limiting protrusion, one end of the transmission case, which is in contact with the middle cover 12, is provided with a limiting groove matched with the limiting protrusion, and the transmission case and the middle cover 12 are provided with threaded parts for fixing the transmission case and the middle cover. In other embodiments, a limiting groove may be formed on the middle cover 12, and a limiting protrusion may be formed on the transmission case, preferably, the limiting protrusion is symmetrically formed along both sides of the axis of the middle cover 12, or in one embodiment, the limiting protrusion may be uniformly formed along the circumferential direction of the middle cover 12 to achieve the clamping positioning with the transmission case, and threaded holes for matching with threaded members are respectively formed on the transmission case and the middle cover 12, thereby achieving the fixing.

further, a plurality of mounting holes for fixing are formed between the transmission case and the half-section type shell 21 in a one-to-one correspondence manner. Wherein, the mounting hole is preferably the screw hole, realizes fixedly through the cooperation of screw hole and screw member, and the screw hole can be followed the circumference edge setting of transmission case to guarantee the steadiness of transmission case and half section formula shell 21.

Furthermore, a pressing piece 5 is arranged between the stator gland 3 and the half-section type shell 21, and a screw is arranged between the stator gland 3 and the half-section type shell 21 and penetrates through the pressing piece 5. From this setting to guarantee the close fit between stator gland 3 and the half-section shell 21, the screw is connected stator gland 3, half-section shell 21 and is pressed tightly piece 5 respectively. In one embodiment, the pressing member 5 is specifically a plurality of pressing bars or pressing plates, and the number of the pressing bars or pressing plates is two or more, and can be selected according to the stator gland 3 and the gap in the half-section type housing 21 bracket. Preferably, the stator core is provided with a flange portion, and the flange portion is provided between the pressing member 5 and the half-section type housing 21, so that the stator can be effectively fixed by the above arrangement.

Preferably, the inner assembly 1 may be fixed by providing a counter bore and providing a stud on the half-section housing 21, or the inner assembly 1 may be fixed by providing a stud and providing a counter bore on the half-section housing 21, and may be set according to actual needs.

The inner assembly 1 of the device is positioned and fixed on the same half-section type shell 21, the stator 14 is positioned and fixed not by the half-section type shell 21 but by the stator gland 3, the half-section type shell 21 and screws, and the stator 14 is fastened on the half-section type shell 21, similarly, the rear bearing of the rotor is positioned and fastened on the half-section type shell 21 by the half-section type shell 21, the bearing gland 4 and the screws, and the defects that the heavy stator 14 is easy to wipe iron on the half-section type structure and the installation process of the heavy stator 14 is difficult to inspect in the early stage are solved. Because the semi-split structure is used, the possibility of more visual operation is provided for engineering manufacture, the whole machine can be better placed, hauled, grafted and combined and fixed during assembly, the assembly consistency and the assembly efficiency are improved, and the one-time qualification rate of finished products is increased. Meanwhile, more different appearance designs can be selected by utilizing the half-section structure, the phenomenon that the shell is locally thicker can not cause adverse effects on injection molding quality, a universal assembly is provided for subsequent development, the number of cast molds is reduced, the injection molding loss is reduced, and the overall production cost and consumption are reduced.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. the utility model provides a heavy electric hammer, its characterized in that includes stator gland, bearing gland, inside assembly and edge two half section formula shells that the axis symmetry of inside assembly set up, inside assembly includes transmission case, middle lid, rotor, stator and rotor rear bearing, the transmission case with middle lid fixed connection and respectively with half section formula shell detachable fixed connection, the stator gland with half section formula shell detachable fixed connection is with right the stator is fixed, the bearing gland with half section formula shell detachable fixed connection is with right the rotor rear bearing fixes.

2. The heavy electric hammer according to claim 1, wherein the middle cover is provided with a limiting protrusion, one end of the transmission case contacting with the middle cover is provided with a limiting groove matched with the limiting protrusion, the limiting protrusion is symmetrically arranged along two sides of the axis of the middle cover, and the transmission case and the middle cover are provided with screw members for fixing the transmission case and the middle cover.

3. the heavy electric hammer according to claim 2, wherein a plurality of mounting holes for fixing are formed in one-to-one correspondence between the transmission case and the half-section type housing.

4. the heavy electric hammer according to claim 3, wherein a pressing member is disposed between the stator cover and the half-section housing, and a screw is disposed between the stator cover and the half-section housing, and the screw penetrates through the pressing member.

5. The heavy electric hammer according to claim 4, wherein the pressing member is a pressing bar or a pressing plate, and the number of the pressing bar or the pressing plate is plural.

6. The heavy duty electric hammer according to claim 5, wherein said stator core is provided with a flange portion, said flange portion being provided between said pressing member and said half-section housing.