CN220156321U - Assembly structure of carbon brush frame torsional spring - Google Patents

Abstract

The utility model relates to an assembly structure of a torsion spring of a carbon brush holder, which comprises the carbon brush holder, a carbon brush box, a mounting column and a torsion spring, wherein the carbon brush box and the mounting column are respectively fixed on the carbon brush holder at intervals, the mounting column is a double-sub column type mounting column, one end of the torsion spring is a bridge arm which spans over a through hole in the middle of the whole torsion spring, the torsion spring is sleeved on the double-sub column type mounting column, and the bridge arm is clamped in the double-sub column type mounting column. According to the utility model, the mounting column is designed into a double-sub-column symmetrical distribution structure, one end of the torsion spring is also designed into a bridge arm, and the bridge arm is clamped between the double-sub-columns during assembly, so that the torsion spring and the mounting column are in a stable assembly form and have a fixed angle. Only need guarantee that the bridge type arm of torsional spring can block into the erection column, can guarantee the correct installation of torsional spring, need not to take shape the torsional spring, consequently can greatly improve torsional spring assembly automation's feasibility.

Description

Assembly structure of carbon brush frame torsional spring

Technical Field

The utility model relates to the technical field of motors, in particular to an assembly structure of a torsion spring of a carbon brush holder.

Background

The torsional spring mounting structure in the original motor carbon brush frame is shown in fig. 3, a cylindrical positioning column 8 is formed by extending the end face of the carbon brush frame upwards, and then the cylindrical positioning column is formed by being sleeved on the mounting column in a matched mode with the torsional spring. And the torsion spring is rocked in the axial direction after assembly, so that the installation reliability is poor.

Disclosure of Invention

In order to solve the technical problems, the utility model aims to provide an assembly structure of a torsion spring of a carbon brush holder, which is not easy to fall off and loose after being assembled, so that the assembly automation of the torsion spring is realized conveniently.

In order to achieve the above object, the present utility model adopts the following technical scheme:

the utility model provides an assembly structure of carbon brush holder torsional spring, includes carbon brush holder, carbon brush box, erection column and torsional spring, carbon brush box, erection column are fixed on the carbon brush holder at intervals respectively, the erection column is two sub-column type erection columns, the one end of torsional spring is the bridge type arm of crossing on whole torsional spring middle part through-hole, the torsional spring cover is established on two sub-column type erection columns, and bridge type arm card is established in two sub-column type erection columns.

As a preferable scheme: the double-sub-column type mounting column comprises two columns which are arranged at intervals, and the bridge type arm of the torsion spring is clamped in a gap between the two columns.

As a preferable scheme: the upper end faces of the two upright posts of the double-sub upright post type mounting post are inclined planes, and the inclination directions of the two upper end faces are opposite.

As a preferable scheme: the bridge arm of the torsion spring passes through the axle center of the torsion spring.

As a preferable scheme: the carbon brush box is towards the side wall of the double-sub upright column type mounting column, a long strip-shaped notch is further formed in the side wall of the carbon brush box, a long swing arm is arranged at the other end of the torsion spring, and the long swing arm is arranged in the long strip-shaped notch.

As a preferable scheme: the carbon brush frame is also provided with a step block, and the double-sub upright column type mounting column is fixed on the step block.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the mounting column is designed into a double-sub-column symmetrical distribution structure, one end of the torsion spring is also designed into a bridge arm, and the bridge arm is clamped between the double-sub-columns during assembly, so that the torsion spring and the mounting column are in a stable assembly form and have a fixed angle. Only need guarantee that the bridge type arm of torsional spring can block into the erection column, can guarantee the correct installation of torsional spring, need not to take shape the torsional spring, consequently can greatly improve torsional spring assembly automation's feasibility.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

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

FIG. 2 is a schematic view of a partially enlarged structure of the present utility model;

FIG. 3 is a prior art torsion spring mounting structure.

The reference numerals are: 1. a carbon brush holder; 2. a carbon brush box; 3. a strip-shaped notch; 4. a double-sub column type mounting column; 5. a torsion spring; 6. a long swing arm; 7. a bridge arm; 8. and positioning columns.

Detailed Description

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

Furthermore, in the description of the present utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more, unless otherwise clearly defined.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

as shown in fig. 1 and 2, an assembly structure of a torsion spring of a carbon brush holder comprises a carbon brush holder 1, a carbon brush box 2, mounting columns and a torsion spring, wherein the carbon brush box 2 and the mounting columns are respectively fixed on the carbon brush holder 1 at intervals, the mounting columns are double-sub column type mounting columns 4, one end of the torsion spring 5 is a bridge arm 7 which spans across a through hole in the middle of the whole torsion spring 5, and the bridge arm 7 passes through the axle center of the torsion spring 5. The torsion spring 5 is sleeved on the double-sub upright column type mounting column 4, and the bridge type arm 7 is clamped in the double-sub upright column type mounting column 4.

The double-sub-column type mounting column 4 comprises two columns which are arranged at intervals, and the bridge type arm 7 of the torsion spring 5 is clamped in a gap between the two columns. The upper end faces of the two upright posts of the double-sub upright post type mounting post 4 are inclined planes, and the inclination directions of the two upper end faces are opposite. The opposite inclined surfaces at the tops of the two upright posts can form a guide surface, and the bridge arm can be automatically rotated and adjusted towards the corresponding direction easily under the action of the guide surface and finally falls into the gap between the two upright posts.

The carbon brush box 2 is further provided with a long strip-shaped notch 3 towards the side wall of the double-sub upright column type mounting column 4, the other end of the torsion spring 5 is provided with a long swing arm 6, and the long swing arm 6 is arranged in the long strip-shaped notch 3. The carbon brush holder 1 is also provided with a step block, and the double-sub column type mounting column 4 is fixed on the step block. The bottom of the double-sub column type mounting column 4 is lifted by the structure, so that the bottom of the torsion spring is correspondingly improved, the strip-shaped notch 3 on the carbon brush box 2 is conveniently arranged, the strip-shaped notch 3 is not required to be positioned at the bottom of the carbon brush box, and the overall strength of the carbon brush box can be improved.

As shown in fig. 2, the torsion spring with the bridge arm is clamped into the double-sub column type mounting column, and when the torsion spring long swing arm 6 is clamped into the carbon brush box groove along the long strip-shaped notch 3 (guide oblique angle) of the carbon brush box, the torsion spring long swing arm is installed in place. The brush box groove and the double-sub upright post structure respectively limit the axial and radial displacement of the torsion spring, and can effectively prevent the brush box groove and the double-sub upright post from being separated.

The utility model belongs to a novel torsion spring assembly structure, which can effectively improve the assembly effectiveness and convenience of products and the feasibility of automatic assembly of carbon brushes.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by those skilled in the art without departing from the spirit and principles of the utility model, and any simple modification, equivalent variation and modification of the above embodiments in light of the technical principles of the utility model may be made within the scope of the present utility model.

Claims (3)

1. The utility model provides an assembly structure of carbon brush holder torsional spring, includes carbon brush holder (1), carbon brush box (2), erection column and torsional spring, carbon brush box (2), erection column are fixed on carbon brush holder (1) at intervals respectively, its characterized in that: the utility model provides a mounting column is two sub-column type erection column (4), the one end of torsional spring (5) is bridge type arm (7) of crossing on whole torsional spring (5) middle part through-hole, torsional spring (5) cover is established on two sub-column type erection column (4), and bridge type arm (7) card is established in two sub-column type erection column (4), two sub-column type erection column (4) are including mutual interval setting in two stands, bridge type arm (7) card of torsional spring (5) is established in the clearance between two stands, the up end of two stands of two sub-column type erection column (4) is the inclined plane, and the incline direction of two up ends is opposite, still be equipped with the step on carbon brush frame (1), two sub-column type erection column (4) are fixed on the step.

2. The assembly structure of a carbon brush holder torsion spring according to claim 1, wherein: the bridge arm (7) of the torsion spring (5) penetrates through the axle center of the torsion spring (5).

3. The assembly structure of a carbon brush holder torsion spring according to claim 1, wherein: the carbon brush box (2) is further provided with a long strip-shaped notch (3) towards the side wall of the double-sub-column type mounting column (4), the other end of the torsion spring (5) is provided with a long swing arm (6), and the long swing arm (6) is arranged in the long strip-shaped notch (3).