A hand-held power tool housing structure

Abstract

The utility model provides a kind of hand-held electric tool shell structure, including the main casing with the vent of one side opening, the main casing side is fixedly installed with installation support no. One side of installation support no. It is opened with multiple installation grooves, adjusting cylinder is rotatably connected in installation groove inside, adjusting cylinder one side is opened with multiple air inlets, adjusting cylinder other side is fixedly connected with multiple filter ports, adjusting cylinder one end is fixedly connected with sprocket group, and multiple sprocket groups are drivenly connected by chain. By setting switchable adjusting cylinder on both sides of main casing, the heat dissipation requirement under different working conditions is realized. In the environment with little dust, rotate the adjusting cylinder to align the air inlet with the vent, ensure the air circulation to improve the heat dissipation efficiency. In the environment with much dust, switch to align the filter port with the vent, use the curved filter plate to block the dust, without disassembling the filter plate, avoid losing parts, and can adjust flexibly according to the environment, effectively prolong the service life of internal motor, battery and other components.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, and in particular to a housing structure for a handheld power tool. Background Technology

[0002] Power tools must be equipped with an effective heat dissipation system during use, as this directly affects the tool's performance, lifespan, and safety. When the motor is powered on, electrical energy is converted into mechanical energy, inevitably generating heat, especially under increased load or continuous operation, where the internal temperature rises rapidly. If this heat cannot be dissipated in time, it can lead to overheating of the motor windings, aging or even breakdown of insulation materials, causing short circuits or burnout. Batteries operating at high temperatures not only experience significantly reduced discharge efficiency but may also suffer thermal runaway, affecting battery life and posing safety hazards. Furthermore, components such as electronic speed control modules and gearboxes are prone to material expansion, lubrication failure, or signal drift in high-temperature environments, affecting tool accuracy and stability. However, dust entering in dusty environments can damage internal components of electronic tools; therefore, a housing structure that allows for flexible adjustment of dust filtration is needed.

[0003] A search revealed Chinese patent publication number CN218613876U, which discloses an installation structure for a power tool housing and a power tool. The housing includes a left housing and a right housing, which are connected to form a complete casing. It also includes a fixing sleeve fitted onto the lower end of the casing; the bottom end of the fixing sleeve is folded inward to form a flange, and the flange has a raised edge.

[0004] To address the problem that the aforementioned technologies lack the ability to flexibly adjust whether to filter dust, and cannot prevent dust from entering the housing when working in dusty environments, a new housing structure for handheld power tools is proposed. Utility Model Content

[0005] In view of this, the present invention aims to provide a housing structure for a handheld power tool to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial alternative.

[0006] The technical solution of this utility model embodiment is implemented as follows: a handheld power tool housing structure includes a main housing with an air vent on one side, a mounting bracket is fixedly installed on one side of the main housing, a plurality of mounting slots are opened on one side of the mounting bracket, an adjusting cylinder is rotatably connected to the inside of the mounting slots, a plurality of air inlets are opened on one side of the adjusting cylinder, and a plurality of filter ports are fixedly connected to the other side of the adjusting cylinder.

[0007] In some embodiments, a sprocket set is fixedly connected to one end of the adjusting cylinder, and multiple sprocket sets are connected by chain drive.

[0008] In some embodiments, a worm gear is fixedly connected to one end of the middle adjusting cylinder, and a worm is rotatably connected to the inner side of the mounting bracket, with one side of the worm meshing with the worm gear.

[0009] In some embodiments, an adjustment knob is fixedly connected above the worm gear.

[0010] In some embodiments, the main housing has multiple positioning holes and fixing ports on both sides.

[0011] In some embodiments, a plurality of positioning rods are fixedly connected to one side of the mounting bracket, and the positioning rods are inserted into the positioning holes.

[0012] In some embodiments, a fixing mechanism is slidably connected inside one side of the mounting bracket. The fixing mechanism includes a hook and a spring. The hook is slidably connected to the inner side of the mounting bracket, and both ends of the spring are fixedly connected to the inner side of the hook.

[0013] In some embodiments, a second mounting bracket is fixedly installed on one side of the main housing. A ventilation groove is opened on the inner side of the second mounting bracket. A fan is fixedly connected inside the ventilation groove. A filter screen is fixedly connected to one end of the ventilation groove. A positioning rod is fixedly connected to one end of the second mounting bracket, and a fixing mechanism is slidably connected to the inner side of the second mounting bracket.

[0014] The present invention has the following advantages due to the adoption of the above technical solution:

[0015] 1. A housing structure for a handheld power tool, wherein switchable adjustment cylinders are provided on both sides of the main housing to meet the heat dissipation requirements under different working conditions. In a dust-free environment, the adjustment cylinders are rotated to align the air inlet with the vent, ensuring a large flow of air to improve heat dissipation efficiency. In a dust-rich environment, the filter is switched to align with the vent, and the curved filter plate is used to block dust from entering. There is no need to disassemble the filter plate, which not only avoids the loss of parts, but also allows for flexible adjustment according to the environment, effectively extending the service life of internal components such as motors and batteries.

[0016] 2. A housing structure for a handheld power tool, which achieves synchronous rotation of multiple adjustment cylinders through a transmission mechanism composed of a worm gear and a sprocket chain. The operator only needs to rotate the adjustment knob on the outside to drive the worm gear through the worm, and use the chain to link all the adjustment cylinders together. The adjustment process is quick and uniform. The worm gear has a self-locking characteristic, which can prevent the adjustment cylinders from accidentally deflecting due to vibration during the operation of the power tool, ensuring the stability of the air intake state and improving the reliability of the structure.

[0017] 3. A housing structure for a handheld power tool, which enables quick assembly and disassembly through a positioning rod and a spring-driven claw mechanism. The structure is simple, easy to assemble and disassemble, and allows users to replace brackets with different functions according to heat dissipation requirements.

[0018] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is the main view of the present invention.

[0021] Figure 2 This is an exploded side view of the present invention;

[0022] Figure 3 This is an exploded view of the mounting bracket of this utility model;

[0023] Figure 4 This is a cross-sectional view of the rotating cylinder of this utility model.

[0024] Figure label:

[0025] 1. Main housing; 2. Mounting bracket one; 3. Vent; 4. Positioning hole; 5. Fixing socket; 6. Vent groove; 7. Fan; 8. Filter screen; 9. Mounting bracket two; 10. Adjusting cylinder; 11. Worm gear; 12. Worm; 13. Adjusting knob; 14. Claw; 15. Spring; 16. Positioning rod; 17. Sprocket assembly; 18. Chain; 19. Air inlet; 20. Filter port; 21. Mounting groove. Detailed Implementation

[0026] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0027] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0028] Example 1:

[0029] like Figure 1 - Figure 4As shown, a handheld power tool housing structure includes a main housing 1 with a vent 3 on one side. The main housing 1 is made of plastic, and air can enter from the vents 3 on both sides to dissipate heat from internal components such as the motor and battery. A mounting bracket 2 is fixedly installed on one side of the main housing 1. Multiple mounting slots 21 are opened on one side of the mounting bracket 21. An adjusting cylinder 10 is rotatably connected to the inside of the mounting slots 21. Multiple air inlets 19 are opened on one side of the adjusting cylinder 10, and multiple filter ports 20 are fixedly connected to the other side of the adjusting cylinder 10.

[0030] When using the device in a low-dust environment, the mounting bracket 12 can be installed on both sides of the main housing 1, and the adjusting cylinder 10 can be rotated to align the two air inlets 19 with the air vents 3. This allows for a large flow of air and improves the cooling effect. When using the device in a dusty environment, the adjusting cylinder 10 can be rotated to align the two filter ports 20 with the air vents 3. The filter ports 20 are curved filter plates, which can reduce dust entry, improve the life of internal components such as motors and batteries, and avoid the problem of frequent disassembly and easy loss due to the additional installation of filter plates.

[0031] In this embodiment, one end of the adjusting cylinder 10 is fixedly connected to a sprocket assembly 17, and multiple sprocket assemblies 17 are connected to each other via a chain 18; one end of the adjusting cylinder 10 in the middle is fixedly connected to a worm gear 11, and a worm 12 is rotatably connected to the inner side of the mounting bracket 2, with one side of the worm 12 meshing with the worm gear 11, and an adjusting knob 13 is fixedly connected above the worm 12.

[0032] The sprocket assembly 17, in conjunction with multiple chains 18, allows all the adjusting cylinders 10 to rotate synchronously. The operator only needs to turn the adjusting knob 13 located on the outside to drive the worm gear 12 to rotate. This allows all the adjusting cylinders 10 to rotate synchronously via the worm wheel 11, achieving rapid adjustment. At the same time, the self-locking characteristic of the worm gear transmission can prevent the adjusting cylinders 10 from shaking due to vibration from the power tool during use.

[0033] In this embodiment, the main housing 1 has multiple positioning holes 4 and fixing ports 5 on both sides, and the mounting bracket 2 has multiple positioning rods 16 fixedly connected to one side, with the positioning rods 16 inserted into the positioning holes 4.

[0034] The mounting bracket 2 has a fixing mechanism slidably connected inside one side. The fixing mechanism includes a hook 14 and a spring 15. The hook 14 is slidably connected to the inside of the mounting bracket 2, and the two ends of the spring 15 are fixedly connected to the inside of the hook 14.

[0035] Mounting bracket 12 can be fixed by inserting the hook 14 and positioning rod 16 into the positioning hole 4 and fixing socket 5. The fixing socket 5 has a slot. When the hook 14 is pushed to both sides by the spring 15, it can fix the mounting bracket 12 from multiple directions, so that the mounting bracket 12 is installed stably and will not fall off.

[0036] In this embodiment: the mounting bracket 12 can be fixed by inserting the hook 14 and the positioning rod 16 into the positioning hole 4 and the fixing socket 5. The fixing socket 5 has a slot. When the hook 14 is pushed to both sides by the spring 15, the mounting bracket 12 can be fixed from multiple directions, so that the mounting bracket 12 is installed stably and will not fall off.

[0037] The sprocket assembly 17, in conjunction with multiple chains 18, allows all the adjusting cylinders 10 to rotate synchronously. The operator only needs to turn the adjusting knob 13 located on the outside to drive the worm gear 12 to rotate. This allows all the adjusting cylinders 10 to rotate synchronously via the worm wheel 11, achieving rapid adjustment. At the same time, the self-locking characteristic of the worm gear transmission can prevent the adjusting cylinders 10 from shaking due to vibration from the power tool during use.

[0038] Example 2:

[0039] A housing structure for a handheld power tool, this embodiment is based on embodiment 1 with the following improvements, such as... Figure 1 - Figure 4 As shown, a mounting bracket 2 9 is fixedly installed on one side of the main housing 1. A ventilation groove 6 is opened on the inner side of the mounting bracket 2 9. A fan 7 is fixedly connected inside the ventilation groove 6. A filter screen 8 is fixedly connected to one end of the ventilation groove 6. A positioning rod 16 is fixedly connected to one end of the mounting bracket 2 9, and a fixing mechanism is slidably connected to the inner side of the mounting bracket 2 9.

[0040] Mounting bracket 29 is fixed to one side of the main housing 1 in the same way as mounting bracket 12. It can provide airflow speed through fan 7, which can improve heat dissipation in hot environments. It can also block dust through filter 8 on one side. When used with mounting bracket 12, it can be flexibly combined with different usage scenarios.

[0041] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A housing structure for a handheld power tool, comprising a main housing (1) with a vent (3) on one side, characterized in that: The main housing (1) is fixedly installed with a mounting bracket (2) on one side. Multiple mounting slots (21) are opened on one side of the mounting bracket (2). An adjusting cylinder (10) is rotatably connected inside the mounting slot (21). Multiple air inlets (19) are opened on one side of the adjusting cylinder (10). Multiple filter ports (20) are fixedly connected on the other side of the adjusting cylinder (10).

2. The housing structure of a handheld power tool according to claim 1, characterized in that: One end of the regulating cylinder (10) is fixedly connected to a sprocket group (17), and multiple sprocket groups (17) are connected by a chain (18).

3. The housing structure of a handheld power tool according to claim 2, characterized in that: The middle adjusting cylinder (10) is fixedly connected to one end of a worm gear (11), and a worm (12) is rotatably connected to the inner side of the mounting bracket (2). One side of the worm (12) meshes with the worm gear (11).

4. The housing structure of a handheld power tool according to claim 3, characterized in that: An adjustment knob (13) is fixedly connected above the worm gear (12).

5. The housing structure of a handheld power tool according to claim 1, characterized in that: The main housing (1) has multiple positioning holes (4) and fixing ports (5) on both sides.

6. The housing structure of a handheld power tool according to claim 5, characterized in that: Multiple positioning rods (16) are fixedly connected to one side of the mounting bracket (2), and the positioning rods (16) are inserted into the positioning holes (4).

7. The housing structure of a handheld power tool according to claim 6, characterized in that: The mounting bracket (2) has a fixing mechanism that is slidably connected to one side. The fixing mechanism includes a hook (14) and a spring (15). The hook (14) is slidably connected to the inside of the mounting bracket (2), and the two ends of the spring (15) are fixedly connected to the inside of the hook (14).

8. The housing structure of a handheld power tool according to claim 1, characterized in that: The main housing (1) is fixedly installed with a second mounting bracket (9) on one side. A ventilation groove (6) is opened inside the second mounting bracket (9). A fan (7) is fixedly connected inside the ventilation groove (6). A filter screen (8) is fixedly connected to one end of the ventilation groove (6). A positioning rod (16) on one side is fixedly connected to one end of the second mounting bracket (9). A fixing mechanism on one side is slidably connected to the inside of the second mounting bracket (9).

Images