A reciprocating saw

Abstract

The application provides a reciprocating saw, comprising: a driving structure; an output structure connected with the driving structure, one end of the output structure being connected with a saw blade; the driving structure comprising: a first shell comprising a restraining rib arranged on an inner wall of the first shell; a motor arranged in the first shell, the motor comprising a stator, a rotor and a gap arranged between the stator and the rotor; a power supply for supplying power to the motor; a second shell connected with the first shell; the output structure being arranged in the second shell; wherein the restraining rib controls the gap so that the gap is kept within a preset range. The restraining rib on the inner wall of the first shell abuts against the shell outside the motor, so that the gap between the stator and the rotor in the motor is kept within a preset range, thereby ensuring normal operation of the motor; and the motor is supplied with power by the power supply, the motor drives the driving structure to move through the output structure, thereby driving the saw blade to operate and realizing cutting of an object.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric tools, in particular to a reciprocating saw. BACKGROUND

[0002] As a kind of electric tool, reciprocating saw has the function of reciprocating cutting objects. Due to its convenience, it is deeply loved by people. The existing reciprocating saw generally adopts motor driving, and the motor mainly includes stator and rotor. However, the gap between the stator and the rotor will affect the rotation speed of the motor during operation, thereby affecting the precision of the motor.

[0003] Therefore, the present application provides a reciprocating saw to solve the above technical problems. SUMMARY

[0004] The present application solves the technical problem that the gap between the stator and the rotor will affect the rotation speed of the motor during operation, thereby affecting the precision of the motor.

[0005] To solve the above problems, the present application provides a reciprocating saw, comprising: a driving structure; an output structure connected with the driving structure, one end of the output structure being connected with a saw blade; the driving structure comprising: a first housing comprising a restraining rib arranged on the inner wall of the first housing; a motor arranged in the first housing, the motor comprising a stator, a rotor and a gap arranged between the stator and the rotor; a power supply for supplying power to the motor; a second housing connected with the first housing; the output structure being arranged in the second housing; wherein the restraining rib controls the gap to keep the gap within a predetermined range.

[0006] Compared with the prior art, the technical effects achieved by the present application are as follows: the restraining rib on the inner wall of the first housing abuts against the housing outside the motor, so as to keep the gap between the stator and the rotor in the motor within a predetermined range, thereby ensuring the normal operation of the motor; and the motor is powered by the power supply, and the motor drives the driving structure to move through the output structure, thereby driving the saw blade to operate and achieving the cutting of objects.

[0007] In the present embodiment, the first housing comprises a holding portion; the power supply comprises a battery pack; the center of gravity of the battery pack is arranged to deviate from the reciprocating saw; the center of gravity of the first housing deviates from the holding portion, and the center of gravity of the second housing is arranged to deviate from one side of the first housing; when the reciprocating saw is placed on a plane, the bottom surface of the battery pack is attached to the plane, and in the case that the centers of gravity of the first housing and the second housing deviate, the reciprocating saw is stably placed.

[0008] The technical effect of adopting this technical solution is that the first housing includes a grip part, which can be used to hold the reciprocating saw by hand. When the reciprocating saw is not in use, the battery pack on the reciprocating saw can be placed on a table or flat surface. Due to the offset of the center of gravity of the first and second housings, the reciprocating saw can still be placed relatively stably on the table, ensuring that the reciprocating saw can be placed stably even when it is not in use.

[0009] In this embodiment, the output structure includes: a transmission part, the transmission part including a first rotating shaft coaxially connected to the motor, the first rotating shaft passing through the first housing and the second housing, the first rotating shaft being provided with a first bevel gear inside the second housing; the first bevel gear meshing with a second conical disc; and an output part, the output part including a slide rod, the saw blade being mounted on one end of the slide rod, the slide rod being connected to the second conical disc via a crank-slide rod structure.

[0010] The technical effect of adopting this technical solution is that the transmission part mainly includes a first rotating shaft, which passes through the first housing and the second housing. The first rotating shaft is driven to rotate by a motor, so that the first rotating shaft drives the output part to move through the reversing of the first bevel gear and the second cone disc, and drives the slide rod and saw blade to move through the crank slide rod structure.

[0011] In this embodiment, a fan blade is also installed on the first rotating shaft. The fan blade is used to dissipate the heat of the motor, and a heat dissipation vent is provided on the first housing at the position corresponding to the fan blade.

[0012] The technical effect of adopting this technical solution is that, in order to ensure that the heat of the motor can be dissipated in time, a fan blade is also installed on the first rotating shaft, and a heat dissipation port is provided on the first housing at the position corresponding to the fan blade. The heat can be dissipated through the heat dissipation port, which can ensure the service life of the motor.

[0013] In this embodiment, a rubber column is also installed at one end of the first rotating shaft, and a groove for installing the rubber column is provided inside the first housing.

[0014] The technical effect of adopting this solution is that the motor is positioned by the rubber column and the grooved part for installing the rubber column, ensuring that the motor does not shake during operation.

[0015] In this embodiment, the second housing is provided with a support leg for adjusting the saw blade stroke, and the support leg is provided with an opening for the saw blade to pass through.

[0016] The technical effect of adopting this solution is that, by having the saw blade pass through the opening in the support leg, the support leg restricts the movement of the saw blade, thereby achieving adjustable saw blade stroke.

[0017] In this embodiment, the support leg includes: a transverse member having multiple mating holes, a connector connecting the transverse member to the housing by selecting any mating hole, thereby adjusting the saw blade stroke; and a support member rotatably connected to one end of the transverse member.

[0018] The technical effect of adopting this technical solution is that, through multiple mating holes on the transverse component, the connecting component can be connected to the housing by mating with any one of the mating holes, thereby adjusting the size of the saw blade stroke and ensuring that it can adapt to different cutting strokes.

[0019] In this embodiment, a roller sleeve is also installed on the first rotating shaft, and a roller sleeve is coaxially installed on the second conical disc.

[0020] The technical effect of adopting this technical solution is that the setting of the roller sleeve can reduce assembly errors, support the first rotating shaft, and improve the overall operational stability of the machine.

[0021] In this embodiment, one end of the slide rod is provided with a slot for inserting the saw blade, and a through hole is provided on the side of the slide rod. The connector passes through the through hole and the through hole on the saw blade to fix the saw blade on the slide rod.

[0022] The technical effect of adopting this technical solution is that, in order to ensure that the saw blade can be inserted into one end of the slide bar, a groove is provided at one end of the slide bar, the saw blade is inserted into the groove, and the saw blade can be installed by connecting parts such as screws passing through the through holes on the slide bar.

[0023] In this embodiment, two fixing blocks are installed at one end of the slide rod, and the fixing blocks are sleeved on the slide rod near the saw blade.

[0024] The technical effect of adopting this solution is that the fixing block can provide support for the slide bar, ensuring the stability of the slide bar during movement. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a reciprocating saw according to the present invention;

[0026] Figure 2 This is a schematic diagram of a reciprocating saw of the present invention with the support legs omitted;

[0027] Figure 3 This is a schematic diagram of the structure of the present invention with the left shell omitted;

[0028] Figure 4 This is a schematic diagram of the internal structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the right shell structure in this invention;

[0030] Figure 6 This is a schematic diagram of the structure of the left shell in this invention;

[0031] Figure 7 This is a schematic diagram of the center of gravity without the battery pack installed in this invention;

[0032] Figure 8 This is a schematic diagram of the center of gravity when installing a conventional battery pack in this invention;

[0033] Figure 9 This is a schematic diagram showing the installation of the extended battery pack and the offset of both the first and second housings in this invention.

[0034] Explanation of reference numerals in the attached drawings: 1. First housing; 101. Left housing; 102. Right housing; 2. Second housing; 201. Grip; 3. Motor; 4. Fixing plate; 5. Receiving groove; 6. Battery pack; 7. First rotating shaft; 8. First bevel gear; 9. Second conical disc; 10. Slide rod; 11. Fan blade; 12. Heat dissipation vent; 13. Rubber column; 14. Groove component; 15. Support leg; 16. Opening; 17. Transverse component; 18. Support component; 19. Roller sleeve; 20. Groove; 21. Fixing block; 22. Through hole. Detailed Implementation

[0035] This invention relates to a reciprocating saw. In the prior art, the gap between the stator and rotor of the motor during operation affects the rotation speed of the motor, thereby affecting the accuracy of the motor.

[0036] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0037] Specifically, this invention provides a reciprocating saw, such as Figures 1-9 The diagram shows: a drive structure; an output structure connected to the drive structure, one end of which is connected to a saw blade; the drive structure includes: a first housing 1, which includes reinforcing ribs arranged on the inner wall of the first housing 1; a motor 3 disposed within the first housing 1, the motor 3 including a stator, a rotor, and a gap disposed between the stator and the rotor; a power supply for supplying power to the motor 3; a second housing 2 connected to the first housing 1; the output structure disposed within the second housing 2; wherein the reinforcing ribs control the gap to keep the gap within a preset range.

[0038] In this embodiment, the reciprocating saw includes a first housing 1 and a second housing 2. The first housing 1 and the second housing 2 can be detachably or fixedly connected. When the first housing 1 and the second housing 2 are fixedly connected, they can be connected using connectors such as screws. When the first housing 1 and the second housing 2 are detachably connected, they can be detachably connected using snap-fit ​​mechanisms. The detachable design allows for periodic cleaning of the components inside the first housing 1 and the second housing 2, preventing dust accumulation.

[0039] Among them, such as Figures 5-6 The first housing 1 is divided into a left housing 101 and a right housing 102. The inner walls of the left housing 101 and the right housing 102 are provided with multiple staggered fixing plates 4. Each fixing plate 4 has a motor 3 receiving groove 5 for accommodating the motor 3. The receiving groove 5 is semi-circular, and the left and right receiving grooves 5 cooperate with each other to fit the overall shape of the motor 3. As shown in the figure, to ensure that the reinforcing ribs at the arc-shaped part of the fixing plate 4 can press against the motor 3 housing, so that the gap between the stator and rotor inside the motor 3 is kept within a preset range, the arc-shaped part of the fixing plate 4 is positioned slightly below the center. During the rotation of the motor 3, when the motor 3 rotates to the upper part, a larger gap is generated between the stator and rotor. Therefore, the upper part of the motor 3 is compressed by most of the arc-shaped parts of the fixing plates 4 and the intersections with the laterally arranged fixing plates 4. When the motor 3 rotates to the lower part, the gap between the stator and rotor is smaller, so the lower part of the motor 3 is compressed by a small portion of the arc-shaped parts of the fixing plates 4. In other words, the arc-shaped groove on the fixed plate 4 is set off at a position slightly below the center, which is an eccentric setting to better suit the rotation process of the motor 3.

[0040] This reciprocating saw supplies power to motor 3 via a power source, which in turn drives the drive structure to move the output structure, thereby causing the output structure to drive the saw blade to reciprocate.

[0041] Further optimization includes the following: the first housing 1 includes a grip 201; the power source includes a battery pack 6; the center of gravity of the battery pack 6 is offset towards the center of the reciprocating saw; the center of gravity of the first housing 1 is offset towards the grip 201, and the center of gravity of the second housing 2 is offset towards one side of the first housing 1; when the reciprocating saw is placed on a flat surface, the bottom surface of the battery pack 6 is in contact with the flat surface, and the reciprocating saw remains stably placed even when the centers of gravity of the first housing 1 and the second housing 2 are offset.

[0042] To ensure grip during operation, the first housing 1 is equipped with a gripping part 201, which is hollow for easy hand grip. Correspondingly, the first housing 1 also has multiple grooves for finger placement, further enhancing ergonomic design. Since both the first housing 1 and the second housing 2 are arranged along the length, when not in use, the reciprocating saw can only be placed at an angle or with one side of either housing 1 or housing 2 pressed against a surface. However, this placement method can cause the reciprocating saw to concentrate on the side pressed against the surface, potentially damaging the housing and affecting product quality.

[0043] To address the issue of ensuring the reciprocating saw can be placed horizontally when not in use, this application offsets the centers of both the first housing 1 and the second housing 2 towards the battery pack 6. Specifically, the components within both housings 1 and 2 are offset towards the battery pack 6 (in the direction of the grip 201), and the length of the battery pack 6 is also offset towards the center of the reciprocating saw. This allows the battery pack 6 to provide support when in contact with the placement surface. This ensures the overall center of gravity of the reciprocating saw is located at the center of the entire product, guaranteeing that the reciprocating saw can still be placed horizontally when not in use. This does not affect the stress distribution on the components within the first and second housings 1 and 2, ensuring stability. Figure 8 The diagram illustrates a reciprocating saw with a shorter battery pack 6. In this structure, the reciprocating saw can only be placed at an angle when positioned on the contact surface, resulting in greater stress on the support leg 15 and the slide bar 10. However, as... Figure 9 As shown, the battery pack 6 is positioned with its center of gravity offset towards the center of the reciprocating saw. The center of gravity within the first housing 1 and the second housing 2 also shifts accordingly towards the grip 201. That is, the length of the second housing 2 is relative to... Figure 8 The second shell 2 is shorter in length than the first shell 1. Figure 8 The first shell 1 is relatively short in length, and the corresponding gripping part 201 is also relatively small in size.

[0044] Further optimization includes the following output structure: a transmission section, which includes a first rotating shaft 7 coaxially connected to the motor 3, the first rotating shaft 7 passing through the first housing 1 and the second housing 2, and a first bevel gear 8 disposed within the second housing 2; the first bevel gear 8 meshing with a second conical disc 9; and an output section, which includes a slide rod 10, the saw blade mounted on one end of the slide rod 10, and the slide rod 10 being connected to the second conical disc 9 via a crank-slide rod 10 structure.

[0045] The first rotating shaft 7 is coaxially arranged with the motor 3. The first rotating shaft 7 also passes through the first housing 1 and the second housing 2. When the first housing 1 and the second housing 2 are detachably connected, in order to ensure easy disassembly of the first housing 1 and the second housing 2, the first rotating shaft 7 can be connected to the motor 3 and the fan blade 11 by a spline. This allows a part of the first rotating shaft 7 to be placed inside the second housing 2 and the other part to be placed outside after the first housing 1 and the second housing 2 are disassembled. Correspondingly, the first rotating shaft 7 does not pass through the fan blade 11 and the motor 3 on the first housing 1. After cleaning the accumulated dust inside the first housing 1 and the second housing 2, the fan blade 11 and the motor 3 are re-coaxially matched with the first rotating shaft 7 to achieve the connection and installation of the first housing 1 and the second housing 2. The crank slide rod 10 structure is prior art, and the structure can be referred to in patent CN218396251U for details, which will not be repeated here.

[0046] The main function of the first bevel gear 8 and the second bevel disc 9 is to reverse direction, so that the motor 3 directly drives the first bevel gear 8. Through the combined action of the first bevel gear 8 and the second bevel disc 9, the balance block is driven to move, so as to drive the saw blade to reciprocate through the crank slide rod 10.

[0047] Further optimization involves installing a fan blade 11 on the first rotating shaft 7. The fan blade 11 is used to dissipate heat from the motor 3. A heat dissipation vent 12 is provided on the first housing 1 at a position corresponding to the fan blade 11.

[0048] The fan blade 11 can dissipate heat from the motor 3. The fan blade 11 is coaxially mounted on the first rotating shaft 7. When the first rotating shaft 7 rotates, the fan blade 11 also rotates to dissipate the heat generated by the motor 3 during operation. Correspondingly, a heat dissipation vent 12 is provided on the first housing 1 to ensure heat dissipation.

[0049] Further optimization involves installing a rubber post 13 at one end of the first rotating shaft 7, and providing a groove 14 inside the first housing 1 for installing the rubber post 13.

[0050] The function of the rubber column 13 is to reduce vibration during the movement of the first rotating shaft 7 and ensure smooth rotation of the first rotating shaft 7. The corresponding groove 14 is for easy installation of the rubber column 13. The groove 14 is fixedly installed on the inner side wall of the first housing 1 by means of reinforcing bars.

[0051] Further optimization involves providing a support leg 15 on the second housing 2 for adjusting the saw blade stroke, with an opening 16 on the support leg 15 for the saw blade to pass through.

[0052] The saw blade can cut the workpiece by passing through the opening 16 on the support leg 15. The support leg 15 can be used to adjust the stroke of the saw blade, such as moving towards the reciprocating saw and away from the reciprocating saw, to accommodate different stroke sizes of the saw blade.

[0053] Further optimization includes: a transverse member 17, on which multiple mating holes (not shown in the figure) are provided; a connector can connect the transverse member 17 to the housing by selecting any mating hole, thereby adjusting the saw blade stroke; and a support member 18, which is rotatably connected to one end of the transverse member 17.

[0054] The transverse member 17 can be slidably connected to the second housing 2 by means of a sliding groove, etc. By the sliding position of the transverse member 17 on the second housing 2, the sliding stroke of the corresponding slide rod 10 can be selected to achieve the purpose of adjustment.

[0055] Further optimization involves installing a roller sleeve 19 on the first rotating shaft 7 and a roller sleeve 19 coaxially mounted on the second conical disk 9.

[0056] The roller sleeve 19 reduces assembly errors and supports the first rotating shaft 7, improving the overall operational stability of the machine.

[0057] Further optimization involves providing a gap slot 20 at one end of the slide rod 10 for inserting the saw blade, and a through hole 22 on the side of the slide rod 10. The connector passes through the through hole 22 and the through hole 22 on the saw blade to fix the saw blade on the slide rod 10.

[0058] like Figure 2 As shown, the end of the slide bar 10 away from the second housing 2 is provided with the above-mentioned slot 20. The size of the slot 20 should be greater than the maximum thickness of the saw blade, and the through hole 22 on the saw blade and the through hole 22 at one end of the slide bar 10 can be connected by a connector to ensure that the saw blade can be locked on the slide bar 10.

[0059] In a further optimization, two fixing blocks 21 are installed at one end of the slide bar 10, and the fixing blocks 21 are sleeved on the slide bar 10 near the saw blade.

[0060] The function of the fixing block 21 is to provide support for the slide bar 10 and ensure the stability of the slide bar 10 during movement.

[0061] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A reciprocating saw, characterized in that, include: Drive structure; An output structure is connected to the drive structure, and one end of the output structure is connected to a saw blade; The driving structure includes: The first housing (1) includes reinforcing bars arranged on the inner wall of the first housing (1); The motor (3) is disposed in the first housing (1), and the motor (3) includes a stator, a rotor and a gap disposed between the stator and the rotor; A power supply for supplying power to the motor (3); The second housing (2) is connected to the first housing (1); the output structure is disposed inside the second housing (2); The reinforcing rib controls the gap to keep it within a preset range; The first housing (1) includes a grip (201); the power source includes a battery pack (6); the center of gravity of the battery pack (6) is offset toward the center of the reciprocating saw; The center of gravity of the first housing (1) is biased toward the grip (201), and the center of gravity of the second housing (2) is biased toward the first housing (1) to one side; When the reciprocating saw is placed on a flat surface, the bottom surface of the battery pack (6) is in contact with the flat surface, and the reciprocating saw remains stably placed even when the center of gravity of the first housing (1) and the second housing (2) is offset.

2. The reciprocating saw according to claim 1, characterized in that, The output structure includes: The transmission part includes a first rotating shaft (7) coaxially connected to the motor (3), the first rotating shaft (7) passing through the first housing (1) and the second housing (2), and a first bevel gear (8) is provided inside the second housing (2) on the first rotating shaft (7); the first bevel gear (8) meshes with a second conical disc (9); The output section includes a slide bar (10), the saw blade is mounted on one end of the slide bar (10), and the slide bar (10) is connected to the second cone disc (9) via a crank slide bar [10] structure.

3. The reciprocating saw according to claim 2, characterized in that, A fan blade (11) is also installed on the first rotating shaft (7). The fan blade (11) is used to dissipate the heat of the motor (3). A heat dissipation port (12) is provided on the first housing (1) at the position corresponding to the fan blade (11).

4. The reciprocating saw according to claim 2, characterized in that, A rubber column (13) is also installed at one end of the first rotating shaft (7), and a groove (14) for installing the rubber column (13) is provided inside the first housing (1).

5. The reciprocating saw according to claim 2, characterized in that, The second housing (2) is provided with a support leg (15) for adjusting the saw blade stroke, and the support leg (15) is provided with an opening (16) for the saw blade to pass through.

6. The reciprocating saw according to claim 5, characterized in that, The supporting leg (15) includes: The transverse component (17) has multiple mating holes. The connector can connect the transverse component (17) to the housing by selecting any of the mating holes, thereby adjusting the saw blade stroke. Support member (18), which is rotatably connected to one end of the transverse member (17).

7. The reciprocating saw according to claim 2, characterized in that, A roller sleeve (19) is also installed on the first rotating shaft (7), and the roller sleeve (19) is coaxially installed on the second conical disc (9).

8. The reciprocating saw according to claim 6, characterized in that, One end of the slide rod (10) is provided with a slot (20) for inserting a saw blade. A through hole (22) is provided on the side of the slide rod (10). The connector passes through the through hole (22) and the through hole (22) on the saw blade to fix the saw blade on the slide rod (10).

9. The reciprocating saw according to claim 7, characterized in that, Two fixing blocks (21) are installed at one end of the slide rod (10), and the fixing blocks (21) are sleeved on the slide rod (10) near the saw blade.

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