Power head structure

Abstract

The utility model discloses a power head structure which comprises a power head body comprising a lower shell and an upper shell. The motor provides driving force for the power head; the battery packs are arranged on the side face of the motor, the multiple battery packs are parallel to the motor, and the multiple battery packs are arranged in parallel; the heat dissipation pipeline is fixed inside the power head main body, the heat dissipation pipeline enters from one side of the motor and then penetrates out from the other side of the motor to form a channel which is provided with an air inlet and an air outlet and is used for air circulation so as to cool the motor, and the motor and the heat dissipation pipeline are wrapped inside the power head main body by the upper shell. A controller is installed on the upper shell, suction force generated by rotation of blades synchronously driven by the motor drives cooling air to enter from an air inlet, the motor is cooled, and then the cooling air is exhausted from an air outlet in the other side of the motor, the heat dissipation performance is optimized, effective heat dissipation of the motor and the controller is ensured through an air cooling technology by means of a single heat dissipation pipeline, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of garden machinery, and in particular to a power head structure. Background Art

[0002] In the field of garden machinery, especially in portable power tools such as lawn mowers and trimmers, the power head is a core component, and its performance and efficiency directly affect the operating experience and service life of the entire equipment. With the advancement of technology and the enhancement of environmental awareness, electric power heads have gradually replaced traditional fuel power heads due to their low noise and zero emission characteristics, becoming the mainstream choice in the market. However, when the electric power head works under long-term high-load conditions, the motor is prone to generate a lot of heat. If the heat cannot be dissipated in a timely and effective manner, the motor performance will be reduced, the life will be shortened, and even safety hazards will be caused.

[0003] In addition, traditional battery layouts often place the batteries at the bottom or rear of the power head. This design not only increases the overall height and weight of the equipment, but also easily causes the center of gravity to shift, affecting the operational stability of the equipment. Especially under high-intensity working conditions, the center of gravity shift may aggravate the shaking of the equipment and reduce operational accuracy and safety. At the same time, traditional cooling methods, such as liquid cooling systems, although they can effectively dissipate heat, increase the complexity and maintenance costs of the system.

[0004] The above contents are only used to assist in understanding the technical solution of the present application, and do not constitute an admission that the above contents are the closest prior art to the present application. Summary of the invention

[0005] Based on this, the present application provides a power head structure to solve one of the above-mentioned technical problems.

[0006] The technical solution adopted by the present application to solve its technical problems is: a power head structure, including: a power head main body, including a lower shell and an upper shell; a motor, providing driving force for the power head; a battery pack, arranged on the side of the motor, several battery packs are parallel to the motor, and multiple battery packs are arranged in parallel; a heat dissipation duct, fixed inside the power head main body, the heat dissipation duct enters from one side of the motor and then passes through the other side of the motor, forming an air inlet and an air outlet, which are used for air circulation channels to cool the motor.

[0007] In some embodiments, the upper shell wraps the motor and the heat dissipation duct inside the power head body, and a controller is installed on the upper shell.

[0008] In some embodiments, it also includes: a battery mounting seat, on which the battery pack is detachably mounted, and the battery pack is half-wrapped by the upper shell; and a mounting groove, in which the motor and the heat dissipation pipe are mounted.

[0009] In some embodiments, the motor is installed at the center of the installation slot, and the heat dissipation duct extends from the air inlet on one side of the motor to the motor, surrounds the motor once, and then communicates with the outside through the air outlet on the other side.

[0010] In some embodiments, a blade is installed at the end of the output shaft of the motor, and the blade is placed in the heat dissipation pipe.

[0011] The beneficial effects of this application are:

[0012] 1) Placing the battery pack on one side of the motor lowers the overall center of gravity of the power head, improves operational stability, optimizes component layout, and facilitates disassembly of the battery pack and maintenance of components. The parallel arrangement of the battery pack design can improve space utilization and reduce the overall size of the power head.

[0013] 2) A heat dissipation duct is designed around the motor, which takes in air from the outside, passes through the motor, and finally discharges air from the air outlet. The suction generated by the rotation of the blades driven synchronously by the motor brings the cooling air in from the air inlet, cools the motor, and is discharged from the air outlet on the other side of the motor, which optimizes the heat dissipation performance. The unique heat dissipation duct uses air cooling technology to ensure effective heat dissipation of the motor and controller, extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a top view schematic diagram of the internal structure of the present application.

[0016] Figure 2 It is a three-dimensional schematic diagram of the internal structure of this application.

[0017] Figure 3 It is a three-dimensional schematic diagram of this application.

[0018] Figure 4 It is a three-dimensional schematic diagram from another angle of the present application.

[0019] Explanation of the accompanying figures: 1. Power head body, 101. Upper shell, 102. Lower shell, 2. Motor, 3. Battery pack, 4. Heat dissipation duct, 5. Air inlet, 6. Air outlet, 7. Controller, 8. Battery mounting seat, 9. Mounting slot. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to achieve. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that the combination of such technical solutions does not exist and is not within the scope of protection of this application.

[0021] In the embodiments of this application, please refer to Figure 1-4 As shown, the power head structure mainly includes: a power head body 1, including a lower shell 102 and an upper shell 101; a motor 2, providing driving force for the power head; a battery pack 3, arranged on the side of the motor 2, several battery packs 3 are parallel to the motor 2, and multiple battery packs 3 are arranged in parallel. Arranging the battery pack 3 on one side of the motor 2 lowers the overall center of gravity of the power head, improves operational stability, optimizes component layout, and facilitates disassembly of the battery pack 3 and maintenance of components. The parallel arrangement of the battery pack 3 design can improve space utilization and reduce the overall size of the power head; a heat dissipation duct 4, fixed inside the power head body 1, the heat dissipation duct 4 enters from one side of the motor 2 and then passes through the other side of the motor 2, forming an air inlet 5 and an air outlet 6, which are used for air circulation channels to cool the motor 2.

[0022] Some preferred / improved embodiments based on the above embodiments will be described below. Any one of the following embodiments may be selected, or multiple embodiments may be selected and combined.

[0023] Specifically, the upper shell 101 wraps the motor 2 and the heat dissipation pipe 4 inside the power head body 1. The upper shell 101 is installed with a controller 7. Both the controller 7 and the motor 2 use air as a cooling medium. The controller 7 is used to control the operation of the power head.

[0024] Furthermore, it also includes: a battery mounting seat 8, on which the battery pack 3 is detachably mounted, and the battery pack 3 is half-wrapped by the upper shell 101, so as to facilitate the disassembly and installation of the battery pack 3; and a mounting groove 9, in which the motor 2 and the heat dissipation pipe 4 are mounted.

[0025] Furthermore, the motor 2 is installed at the center of the installation groove 9, and the heat dissipation duct 4 extends from the air inlet 5 on one side of the motor 2 to the motor 2, surrounds the motor 2 once, and is connected to the outside through the air outlet 6 on the other side to achieve a better heat dissipation effect.

[0026] Specifically, blades are installed at the end of the output shaft of the motor 2, and the blades are placed in the heat dissipation duct 4. The blades rotate with the motor 2, generating suction to drive air to flow in from the air inlet. After entering the heat dissipation duct 4, the air surrounds the motor 2. After cooling the motor 2, the air flows out from the air outlet 6, thereby achieving heat dissipation of the motor 2 and other internal components.

[0027] So far, various embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed herein.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present application, and the aforementioned embodiments are only used to illustrate the technical solution of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that it is still possible to modify the technical solutions recorded in the aforementioned embodiments, or to make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not drive the essence of the corresponding technical solutions away from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A power head structure, characterized in that: include: The power head body comprises a lower shell and an upper shell; The motor provides driving force for the power head; A battery pack is arranged on the side of the motor, with several battery packs being parallel to the motor and multiple battery packs being arranged in parallel; The heat dissipation duct is fixed inside the power head body. The heat dissipation duct enters from one side of the motor and then passes out from the other side of the motor, forming an air inlet and an air outlet, which are used as a channel for air circulation to cool the motor.

2. A power head structure according to claim 1, characterized in that: The upper shell wraps the motor and the heat dissipation pipe inside the power head body, and a controller is installed on the upper shell.

3. A power head structure according to claim 2, characterized in that: Also includes: A battery mounting seat, on which the battery pack is detachably mounted, and the battery pack is half-wrapped by the upper shell; The motor and the heat dissipation pipe are installed in the mounting groove.

4. A power head structure according to claim 3, characterized in that: The motor is installed at the center of the installation slot, and the heat dissipation duct extends from the air inlet on one side of the motor to the motor, surrounds the motor once, and is connected to the outside through the air outlet on the other side.

5. A power head structure according to claim 1, characterized in that: A blade is installed at the end of the output shaft of the motor, and the blade is placed in the heat dissipation pipeline.

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