CN217741435U - Starting motor shell - Google Patents

Abstract

The application discloses starting motor shell includes: the device comprises a body, a transmission box and a control box; the transmission box is arranged at one end of the body; the control box is arranged on one side of the body; one end of the body, which is provided with the transmission box, is symmetrically provided with two mounting holes; a pin hole is arranged between the two mounting holes; a pin penetrates through the pin hole; the end part of the transmission box is provided with a shaft hole; an arc-shaped flange is arranged outside the shaft hole; the arc flange and the shaft hole are coaxially arranged, and the arc flange is arranged on one side, far away from the pin hole, of the shaft hole. The application has the advantages that: the utility model provides a through additionally setting up the pin hole between two mounting holes for motor housing utilizes the mode of inserting the pin in the pin hole when assembling outside spare part on, realizes the location of body on outside spare part, and need not to utilize the side of transmission box and outside spare part to cooperate, and then when processing the body, need not to carry out the finish machining to the side of transmission box, therefore has reduced the processing cost, has improved production efficiency's starter motor housing.

Description

Starting motor shell

Technical Field

The application relates to the field of power machinery, in particular to a starting motor shell.

Background

In the related art, the starter motor is often mounted in a housing; one end of the shell is provided with a transmission box, and a transmission shaft of the starting motor is inserted into the transmission box; a transmission gear is connected to a transmission shaft of the starting motor in a sliding manner, the transmission gear can synchronously rotate along with the transmission shaft, meanwhile, a control box is often arranged on the side of the shell, an electromagnet and an elastic piece are fixed in the control box, the elastic piece is in contact with the transmission gear, the elastic piece can be driven to reciprocate by the on-off of the electromagnet, the transmission gear is further driven to slide along the transmission shaft, the transmission gear is meshed with a gear connected to an external part in the process, and at the moment, the starting motor can realize the transmission of torque to the external part when working;

the whole metalwork that often forms through a series of processing after pouring of shell, when on with the shell assembly fixed to outside spare part, often set up two mounting holes through the symmetry on the shell, and utilize the bolt to fix the shell to the spare part in mounting hole department, the screw hole of in-process corresponding fixing bolt on for ensureing mounting hole and outside spare part is just right, often increase one and carry out the mode of finish machining at the outside ring surface of transmission box, realize the radial positioning between shell and the external spare part, the existence of these two finish machining processes makes the processing of shell complicated, the processing cost increases, machining efficiency receives the influence.

Disclosure of Invention

This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.

To solve the technical problems mentioned in the background section above, some embodiments of the present application provide a starter motor casing, comprising: the device comprises a body, a transmission box and a control box; the transmission box is arranged at one end of the body; the control box is arranged on one side of the body; one end of the body provided with the transmission box is symmetrically provided with two mounting holes; a pin hole is arranged between the two mounting holes; a pin penetrates through the pin hole; the end part of the transmission box is provided with a shaft hole; an arc-shaped flange is arranged outside the shaft hole; the arc flange and the shaft hole are coaxially arranged, and the arc flange is arranged on one side, far away from the pin hole, of the shaft hole.

The pin hole is a cylindrical hole; one end of the pin is inserted into the pin hole and is in interference fit with the pin hole.

A middle hole is arranged between the two mounting holes; the middle hole and the pin hole are communicated with each other and are coaxially arranged.

One end of the body, which is provided with the transmission box, is provided with a matching surface; one end of the pin far away from the middle hole extends out of the matching surface.

Two through holes are symmetrically arranged on the control box.

The ratio of the hole diameters of the through hole and the mounting hole is 2:1.

the beneficial effect of this application lies in: the utility model provides a through additionally setting up the pin hole between two mounting holes for motor housing utilizes the mode of inserting the pin in the pin hole when assembling outside spare part, realizes the location of body on outside spare part, and need not to utilize the side of transmission box and outside spare part to cooperate, and then when processing the body, need not additionally to carry out the finish machining to the side of transmission box, therefore has reduced the processing cost, has improved production efficiency's starter motor shell.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it.

Further, throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic and that elements and elements are not necessarily drawn to scale.

In the drawings:

FIG. 1 is an overall schematic view of a starter motor housing according to one embodiment of the present application;

fig. 2 is an overall schematic view of another perspective of the starter motor housing shown in fig. 1.

Detailed Description

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it is to be understood that the disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided for a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and the embodiments of the disclosure are for illustration purposes only and are not intended to limit the scope of the disclosure.

It should be noted that, for the convenience of description, only the parts relevant to the present application are shown in the drawings. The embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict.

It is noted that references to "a" or "an" in this disclosure are intended to be illustrative rather than limiting, and that those skilled in the art will appreciate that references to "one or more" are intended to be exemplary and not limiting unless the context clearly indicates otherwise.

The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 2, a starter motor casing 100 of the present application includes:

a body 101 defined as a metal case provided with a cavity therein for accommodating a starter motor;

a gear box 102; which is defined as a housing provided therein with a transmission chamber for receiving a transmission shaft of a starter motor and a transmission gear mounted on the transmission shaft for transmitting torque to the outside;

a control box 103; it is defined as a housing in which a control chamber for accommodating an electromagnet for controlling whether a transmission gear transmits torque to the outside is provided;

the fixing mode of the starting motor in the body 101 is the prior art; the transmission box 102 is arranged at one end of the body 101, and a transmission shaft of the starting motor and a transmission gear which is connected to the transmission shaft in a sliding way are both positioned in the transmission box 102; the control box 103 is arranged at one side of the body 101, the electromagnet and the spring part which reciprocates under the control of the electromagnet are both positioned in the control box 103, and the fixing mode of the electromagnet and the spring part in the control box 103 and the connection mode of the electromagnet and the spring part with the transmission gear are the prior art; two mounting holes 101a are symmetrically formed in one end, provided with the transmission box 102, of the body 101, bolts can penetrate through the two mounting holes 101a, and one end of each bolt is in threaded connection with an external part so as to fix the body 101 on the part;

further, a pin hole 101b is formed between the two mounting holes 101a, a pin is inserted into the pin hole 101b, the pin and the pin hole 101b are in interference fit, one end of the pin extends out of the pin hole 101b, and the pin is inserted into a corresponding position of a part, so that the body 101 is positioned on the part by using the pin and the pin hole 101b before the body 101 is fixed by using the bolt and the mounting holes 101 a; specifically, the pin hole is a cylindrical hole, and compared with holes with other shapes such as a polygon, a trapezoid and the like, the pin hole has the advantage of convenience in processing; the pin is a conventional hollow cylindrical positioning pin and is not shown in the attached drawings of the specification; the end of the transmission box 102 is provided with a shaft hole 102a; the shaft hole is a cylindrical hole which is arranged conventionally, and a transmission shaft of the starting motor is inserted into the shaft hole 102a, so that the shaft hole 102a and the transmission shaft of the starting motor are arranged coaxially; an opening 102b is formed in one side, away from the pin hole 101b, of the transmission box 102; the transmission gear is connected to the opening 102b in a sliding mode, when the transmission gear slides relative to the transmission shaft under the action of the electromagnet and the elastic piece, one side, close to the opening 102b, of the transmission gear is meshed with a corresponding gear on a part, and therefore the transmission of torque to the part when the starting motor works can be achieved. An arc-shaped flange 102c is arranged outside the shaft hole 102a, the arc-shaped flange 102c is an arc-shaped surface and is arranged coaxially with the shaft hole 102a, and the arc-shaped flange 102c is arranged on one side, far away from the column pin hole 101b, outside the shaft hole 102a; by arranging the arc-shaped flange 102c, after the body 101 and the parts are assembled, the side surface of the arc-shaped flange 102c is attached to the corresponding position on the parts, and the pin is embedded into the parts, so that the relative rotation of the body 101 and the parts is limited, and the positioning accuracy of the body 101 and the parts is improved; because the combined action of the pin and the arc-shaped flange realizes the radial positioning between the body and the shell, the large-area outer annular surface of the transmission box does not need to be subjected to finish machining during machining, the machining time is reduced, and the production efficiency is improved.

Further, a middle hole 101d is arranged between the two mounting holes 101 a; the middle hole 101d and the pin hole 101b are coaxially arranged and communicated with each other, and the middle hole is positioned at one end of the pin hole far away from the transmission box 102; bolts are also inserted into the middle holes 101d, and the screws penetrate through the pins and are in threaded connection with the parts, so that the positioning accuracy of the assembled body 101 and the parts is improved, and the stress strength between the body 101 and the parts is enhanced.

Furthermore, one end of the body 101, which is provided with the transmission box 102, is provided with a matching surface 101c, and one end of the pin protrudes out of the matching surface; the surface roughness of the mating surface 101c is subjected to conventional finishing processing, so that the body 101 and the component are axially positioned after being attached to the component.

Furthermore, the control box 103 is symmetrically provided with two through holes 103a, and a stud can be connected in the through holes to connect the body 101 and an end cover matched with the body 101, the end cover is fixed at one end of the body 101 far away from the transmission box 102 and is used for sealing the body 101 and the control box 103 so as to protect a starting motor, an electromagnet, an elastic element and the like in the body 101 and the control box 103.

Further, the ratio of the hole diameter of the through hole to the hole diameter of the mounting hole 101a is 2:1; in the conventional arrangement in the art, the control box 103 does not bear torque, but only plays a role of protecting the electromagnet and the elastic member, so that there is no special requirement for the connection strength between the control box and the end cover, and the conventional arrangement is that the ratio of the through hole to the hole diameter of the mounting hole 101a is 4:3, if the mounting hole 101a is connected with the part by using the bolt of M10, the penetrating hole is connected with the end cover by using the stud of M6; by adjusting the ratio of the hole diameter of the through hole to the hole diameter of the mounting hole 101a to 2:1, under the condition of ensuring that the connection strength between the control box 103 and the end cover is enough, a stud with lower cost is selected, so that the installation cost is reduced.

The foregoing description is only exemplary of the preferred embodiments of the disclosure and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention in the embodiments of the present disclosure is not limited to the specific combinations of the above-mentioned features, and other embodiments in which the above-mentioned features or their equivalents are combined arbitrarily without departing from the spirit of the invention are also encompassed. For example, the above features and (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure are mutually replaced to form the technical solution.

Claims (6)

1. A starter motor housing comprising: the device comprises a body, a transmission box and a control box; the transmission box is arranged at one end of the body; the control box is arranged on one side of the body;

the method is characterized in that: two mounting holes are symmetrically formed in one end, provided with the transmission box, of the body; a pin hole is formed between the two mounting holes; a pin penetrates through the pin hole; the end part of the transmission box is provided with a shaft hole; an arc-shaped flange is arranged outside the shaft hole; the arc-shaped flange is coaxially arranged with the shaft hole and is arranged on one side, far away from the pin hole, of the shaft hole.

2. The starter motor housing of claim 1 wherein: the pin hole is a cylindrical hole; one end of the pin is inserted into the pin hole and is in interference fit with the pin hole.

3. The starter motor housing as claimed in claim 1, wherein: a middle hole is arranged between the two mounting holes; the middle hole and the pin hole are communicated with each other and are coaxially arranged; the middle hole is positioned at one end of the pin hole far away from the transmission box.

4. The starter motor housing of claim 3, wherein: one end of the body, which is provided with the transmission box, is provided with a matching surface; one end of the pin far away from the middle hole extends out of the matching surface.

5. The starter motor housing of claim 1 wherein: two through holes are symmetrically arranged on the control box.

6. The starter motor housing of claim 5 wherein: the ratio of the aperture of the through hole to the aperture of the mounting hole is 2:1.

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