Outer protection adjusting mechanism of starting motor

Abstract

The utility model relates to an outer protection adjusting mechanism of a starting motor, the outer surface of the starting motor is provided with a heat dissipation shell attached to the starting motor, the heat dissipation shell is sleeved with a reinforced heat dissipation protection shell, the reinforced heat dissipation protection shell is attached to the outside of the heat dissipation shell, the end, close to a PCB, of the reinforced heat dissipation protection shell is provided with an outwards-extending lug plate, the lug plate is detachably connected with the PCB, and the PCB is provided with an outer protection cover. A sliding structure and a limiting structure for limiting sliding of the sliding structure are arranged between the reinforced heat dissipation protection shell and the heat dissipation shell. The starting motor has the advantages that the heat dissipation shell is arranged outside the starting motor, and the heat dissipation enhancing protection shell is arranged, so that the heat dissipation performance is enhanced, and meanwhile, the starting motor is well protected.

Description

Technical Field

[0001] The present application belongs to the technical field of micro turbojet engines, and in particular, relates to an outer protection adjustment mechanism for a starter motor. Background Art

[0002] The starting motor is a key component of a micro turbojet engine. It provides power for the rotation of the rotor when there is no jet power. For example, during the starting phase of a turbojet engine, the starting motor is needed to drive the rotor to rotate so that compressed air can enter the combustion chamber; or after the engine stops running, the starting motor drives the rotor to move so that external cold air can enter the combustion chamber to dissipate the heat of the engine.

[0003] The motor consumes energy when it is running, and this energy will be converted into mechanical energy and heat energy. If the motor temperature is too high, it will affect the motor efficiency, so the motor itself needs to be able to dissipate heat. Although the existing motors have taken the heat dissipation issue into consideration, only some ventilation holes are opened on the starter motor itself. The starter motor is close to the core part of the engine and works in a high-temperature environment for a long time. These heat dissipation holes are not enough to ensure the heat dissipation effect around the motor. Therefore, an improved technology is proposed. Utility Model Content

[0004] The utility model aims to solve the above technical problems and provides an outer protection adjustment mechanism for improving the heat dissipation performance of a starter motor.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] The invention discloses an outer protection adjustment mechanism for a starter motor, comprising a starter motor, a clutch located at an output end of the starter motor and a PCB board located at the other end of the starter motor. A heat dissipation shell which fits the starter motor is arranged on the outer surface of the starter motor, a reinforced heat dissipation protection shell is connected to the outer surface of the heat dissipation shell, the reinforced heat dissipation protection shell is arranged outside the heat dissipation shell, an ear plate which extends outward is arranged at one end of the reinforced heat dissipation protection shell close to the PCB board, the ear plate is detachably connected to the PCB board, a sliding structure and a limiting structure which limits the sliding of the sliding structure are arranged between the reinforced heat dissipation protection shell and the heat dissipation shell, so as to increase the adjustable performance.

[0007] Furthermore, the sliding structure includes a slider arranged on the outer side of the heat dissipation shell and along the circumferential direction. The slider is arranged along the axial direction of the starter motor, and a slide groove capable of sliding with the slider is provided in the heat dissipation protection shell; the slider is a long strip slider, and the heat dissipation protection shell is extended at both ends, and the heat dissipation protection shell is extended at both ends of the slide groove. The slider is adapted to the slide groove, and sliding against each other is relatively stable, which is convenient for positioning, thereby ensuring that the starter motor is concentric with the shell.

[0008] Furthermore, the limiting structure includes an internal threaded hole provided along the circumferential direction on the outer side of the enhanced heat dissipation protection shell, the internal thread of the internal threaded hole is connected with a positioning bolt, and the part of the positioning bolt located inside the enhanced heat dissipation protection shell abuts against the outside of the heat dissipation shell.

[0009] Furthermore, one end of the enhanced heat dissipation protection shell extends to the clutch of the starter motor, and the shape is adapted to the clutch, surrounding the starter motor, increasing the comprehensiveness of protection, and the contact surface is increased, and the heat dissipation performance is better; the outer surface of the enhanced heat dissipation protection shell is provided with air holes, and air is introduced between the enhanced heat dissipation protection shell and the heat dissipation shell through the air holes, thereby increasing the heat dissipation efficiency of the heat dissipation shell.

[0010] Furthermore, three groups of internal threaded holes and positioning bolts are matched and evenly spaced on the enhanced heat dissipation protection shell; three groups of sliders and sliding grooves are matched and evenly spaced.

[0011] The beneficial effects of the utility model are:

[0012] By arranging a heat dissipation shell outside the starter motor and then arranging a reinforced heat dissipation protection shell, the heat dissipation performance is enhanced, and at the same time, the starter motor is better protected;

[0013] The enhanced heat dissipation protective shell can slide outside the heat dissipation shell through the sliding structure, and then the position of the enhanced heat dissipation protective shell is fixed by the limiting structure. The up and down directions can be fixed at any position, which is convenient for determining the axial position of the starter motor, and is beneficial for adjusting the gap between the starter motor and the rotor to be driven by the starter motor. It is convenient for the starter motor to be connected and used with different types of clutches and PCB boards. It is practical and flexible during use, and can effectively improve the product assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 is a schematic diagram of the three-dimensional structure of an embodiment of the present application;

[0016] Figure 2 is a schematic diagram of a top view of the structure of an embodiment of the present application;

[0017] Figure 3 This is a schematic diagram of the structure of the non-reinforced heat dissipation protective shell of an embodiment of the present application;

[0018] The reference numerals in the figure are:

[0019] 1. Starter motor, 2. Clutch, 3. Heat dissipation shell, 4. Strengthened heat dissipation protection shell, 5. Sliding structure, 6. Limiting structure, 7. Slider, 8. Slide groove, 9. Internal threaded hole, 10. Positioning bolt, 11. Ventilation hole, 12. PCB board, 13. Ear plate. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0021] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention of the present utility model, unless otherwise specified, "multiple" means two or more.

[0022] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0023] The technical solution of the present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0024] Example

[0025] The present embodiment provides an outer protection adjustment mechanism for a starter motor, comprising a starter motor 1, a clutch 2 located at the output end of the starter motor 1, and a PCB board 12 located at the other end of the starter motor 1. The outer surface of the starter motor 1 is provided with a heat dissipation shell 3 made of a material that is easy to dissipate heat and fits the starter motor 1. The heat dissipation shell 3 is connected to a reinforced heat dissipation protective shell 4. The reinforced heat dissipation protective shell 4 is fitted outside the heat dissipation shell 3 and can slide relative to the heat dissipation shell 3; the reinforced heat dissipation protective shell 4 is provided with an outwardly extending ear plate 13 at one end close to the PCB board 12, and the ear plate 13 and the PCB board 12 can be detachably connected by passing a bolt through the hole through an opening; a sliding structure 5 and a limiting structure 6 for limiting the sliding of the sliding structure 5 are provided between the reinforced heat dissipation protective shell 4 and the heat dissipation shell 3, and then the position of the reinforced heat dissipation protective shell is fixed by the limiting structure, and can be fixed at any position in the up and down directions, so as to facilitate the determination of the axial position of the starter motor, and to facilitate the adjustment of the gap between the starter motor and the rotor to be driven by the starter motor, so as to facilitate the connection and use of the starter motor with clutches and PCB boards of different models.

[0026] The sliding structure 5 includes a slider 7 which is arranged on the outer side of the heat dissipation shell 3 and in the circumferential direction. The slider 7 is arranged along the axial direction of the starter motor 1. A slide groove 8 which can slide with the slider 7 is arranged in the reinforced heat dissipation protective shell 4. The slider 7 is a long strip slider, with both ends extending out of the heat dissipation shell 3. Both ends of the slide groove 8 extend to the reinforced heat dissipation protective shell 4. The slider 7 and the slide groove 8 are cooperated to form three groups which are evenly spaced to ensure that the relative movement of the reinforced protective shell is along the axial direction of the starter motor. The mutual sliding is relatively stable and convenient for positioning, ensuring that the starter motor is concentric with the shell.

[0027] The limiting structure 6 includes an internal threaded hole 9 which is arranged on the outer side of the reinforced heat dissipation protective shell 4 and in the circumferential direction. The internal threaded hole 9 is connected to a positioning bolt 10 through the internal thread. The part of the positioning bolt 10 located inside the reinforced heat dissipation protective shell 4 abuts against the outside of the heat dissipation shell 3. The internal threaded hole 9 and the positioning bolt 10 are cooperated to form three groups, which are evenly spaced and arranged on the reinforced heat dissipation protective shell 4.

[0028] One end of the enhanced heat dissipation protection shell 4 extends to the clutch 2 of the starter motor 1, and the shape is adapted to the clutch 2, surrounding the starter motor 1, increasing the comprehensiveness of protection, and the contact surface is increased, and the heat dissipation performance is better; a plurality of groups of air holes 11 are provided on the outer surface of the enhanced heat dissipation protection shell 4, each group of air holes 11 has more than one, and are axially arranged outside the starter enhanced heat dissipation protection shell 4. When the enhanced heat dissipation protection shell 4 slides outside the heat dissipation shell 3, air can be introduced between the enhanced heat dissipation protection shell 4 and the heat dissipation shell 3 through the air holes 11, so the heat dissipation performance is good, and at the same time, the contact surface between each other is reduced, the friction is reduced during sliding, and the sliding is smoother.

[0029] Based on the above ideal embodiments of this application, the relevant staff can make various changes and modifications without departing from the technical concept of this application through the above description. The technical scope of this application is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An outer protection adjustment mechanism for a starter motor, comprising a starter motor, a clutch located at an output end of the starter motor and a PCB board located at the other end of the starter motor, characterized in that: A heat dissipation shell is provided on the outer surface of the starter motor, and a reinforced heat dissipation protective shell is connected to the heat dissipation shell. An ear plate extending outward is provided at one end of the reinforced heat dissipation protective shell close to the PCB board, and the ear plate is detachably connected to the PCB board. A sliding structure and a limiting structure for limiting the sliding of the sliding structure are provided between the reinforced heat dissipation protective shell and the heat dissipation shell.

2. The outer protection adjustment mechanism of the starter motor according to claim 1 is characterized in that: The sliding structure comprises a sliding block provided along the circumferential direction on the outer side of the heat dissipation shell, the sliding block is arranged along the axial direction of the starter motor, and a sliding groove capable of sliding in cooperation with the sliding block is provided in the enhanced heat dissipation protection shell.

3. The outer protection adjustment mechanism of the starter motor according to claim 2 is characterized in that: The slider is a long strip slider, with heat dissipation shells extending from both ends, and the two ends of the slide groove extend to strengthen the heat dissipation protection shells.

4. The outer protection adjustment mechanism of the starter motor according to any one of claims 1 to 3, characterized in that: The limiting structure includes an internal threaded hole which is arranged on the outer side of the enhanced heat dissipation protection shell and along the circumferential direction. The internal threaded hole is connected with a positioning bolt through the internal thread. The part of the positioning bolt located in the enhanced heat dissipation protection shell abuts against the outside of the heat dissipation shell.

5. The outer protection adjustment mechanism of the starter motor according to any one of claims 2-3, characterized in that: The sliders and the slide grooves are matched to form at least three groups, which are evenly spaced and arranged at intervals.

6. The outer protection adjustment mechanism of the starter motor according to claim 1, characterized in that: One end of the enhanced heat dissipation protection shell extends to the clutch of the starter motor, and the shape is adapted to the clutch. The outer surface of the enhanced heat dissipation protection shell is provided with ventilation holes.

7. The outer protection adjustment mechanism of the starter motor according to claim 4 is characterized in that: The internal threaded holes and positioning bolts are matched to form at least three groups, which are evenly distributed on the enhanced heat dissipation protection shell.

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