Reciprocating saw

Abstract

The utility model discloses a reciprocating saw which comprises a shell, a power transmission device arranged in the shell, a reciprocating rod and a control switch, the power transmission device comprises a motor, a driving gear and a gear disc, an eccentric column is arranged on the gear disc, and a reciprocating groove is formed in the inner end of the reciprocating rod. The eccentric column is arranged in the reciprocating groove and can drive the reciprocating rod to reciprocate, the outer end of the reciprocating rod is provided with a mounting portion used for mounting a saw blade, the mounting portion is exposed out of the shell, a mounting groove is formed in the shell, the gear disc is arranged in the mounting groove, a tensioning hole penetrating through the shell is formed in the bottom of the mounting groove, and the bottom of the gear disc extends to form a connecting portion. A tensioning hole is formed in the shell, a connecting hole is formed in the connecting part, a tensioning rod is arranged in the tensioning hole and the connecting hole, and the tensioning rod penetrates through the tensioning hole from the outside of the shell and is arranged in the connecting hole to be connected with the connecting part, so that the reciprocating saw is simple in structure, the production cost of the reciprocating saw can be effectively reduced, and the gear disc in the shell can be mounted more stably.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric tools, in particular to a reciprocating saw. Background Art

[0002] Reciprocating saws are mainly used for cutting objects. They are recognized by market consumers for their advantages such as being easy to carry, reducing operator fatigue, and improving operating efficiency. The reciprocating saws currently on the market have a structure that includes a power transmission device and a reciprocating rod. When the equipment is running, the power transmission device drives the reciprocating rod to reciprocate, thereby cutting the object. The power transmission device includes a motor, a driving gear arranged on the motor shaft, and a gear plate meshing with the driving gear. The motor can drive the gear plate to rotate. In order to avoid the gear plate from moving randomly inside the reciprocating saw, a gear box for installing the gear plate is usually provided inside the reciprocating saws currently on the market, which ensures that the gear plate can always be in meshing state with the driving gear on the motor shaft, so that the reciprocating saw can be used normally. However, the provision of the gear box not only complicates the internal structure of the reciprocating saw, but also increases the production cost of the reciprocating saw. Summary of the invention

[0003] The utility model aims to provide a reciprocating saw which has a simple structure and can effectively reduce the production cost of the reciprocating saw and in which the gear plate in the housing can be installed more stably.

[0004] The purpose of the utility model is achieved in this way:

[0005] A reciprocating saw comprises a shell, a power transmission device arranged in the shell, a reciprocating rod connected to the power transmission device and a control switch for controlling the operation of the power transmission device, the power transmission device comprises a motor, a driving gear arranged on the motor shaft and a gear plate meshing with the driving gear, an eccentric column is provided on the gear plate, a reciprocating groove is provided at the inner end of the reciprocating rod, the eccentric column is arranged in the reciprocating groove and can drive the reciprocating rod to reciprocate, a mounting portion for mounting a saw blade is provided at the outer end of the reciprocating rod, the mounting portion is exposed outside the shell, a mounting groove is provided in the shell, the gear plate is arranged in the mounting groove, a tightening hole penetrating the shell is provided at the bottom of the mounting groove, a connecting portion is extended to form at the bottom of the gear plate, a connecting portion is provided on the connecting portion, a tightening rod is provided in the tightening hole and the connecting hole, the tightening rod passes through the tightening hole from the outside of the shell and is arranged in the connecting hole to be connected with the connecting portion.

[0006] Furthermore, a bearing groove is provided in the installation groove, the tightening hole is arranged at the bottom of the bearing groove, a first bearing is provided in the bearing groove, a first bearing hole is provided on the first bearing, the first bearing hole corresponds to the position of the tightening hole, the connecting portion is provided in the first bearing hole, an abutting portion is extended and formed on the connecting portion, and the abutting portion abuts against the upper surface of the first bearing.

[0007] Furthermore, a limiting portion is provided in the installation groove, and the limiting portion is arranged around the bearing groove. A limiting hole is provided on the limiting portion. A cover plate is provided in the installation groove to cover the first bearing in the bearing groove. A fixing portion is extended and formed on the cover plate, and a fixing hole is provided on the fixing portion. A fixing rod is provided in the fixing hole and the limiting hole. The upper surface of the first bearing abuts against the cover plate, and a through hole is provided on the cover plate for the connecting portion to pass through.

[0008] Furthermore, a guide channel is provided in the shell, a guide member is provided in the guide channel, a guide hole is provided on the guide member, and the outer end of the reciprocating rod passes through the guide hole and is arranged outside the shell.

[0009] Furthermore, baffles are symmetrically provided in the guide channel, the guide member is arranged between the symmetrical baffles, a fixing groove is provided at the bottom of the guide channel, a guide block is extended from the bottom of the guide member, the guide block is arranged in the fixing groove, and limiting columns are symmetrically provided in the shell, and the symmetrical limiting columns are respectively arranged on both sides of the guide channel, abutment blocks are extended on both sides of the guide member, inner grooves are opened on the abutment blocks, and the limiting columns are arranged in the inner grooves.

[0010] Furthermore, a positioning groove is provided in the shell, a second bearing is provided in the positioning groove, a second bearing hole is opened in the second bearing, and one end of the driving gear is arranged in the second bearing hole.

[0011] Furthermore, a control hole is opened on the shell, and one side of the control switch passes through the control hole and is arranged outside the shell.

[0012] Furthermore, a blocking groove is provided on the shell, the connection hole corresponds to the position of the blocking groove and passes through the bottom of the blocking groove, and a blocking plate covering the connection hole is provided in the blocking groove.

[0013] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

[0014] A reciprocating saw comprises a housing, a power transmission device arranged in the housing, a reciprocating rod connected to the power transmission device, and a control switch for controlling the operation of the power transmission device, wherein the power transmission device comprises a motor, a driving gear arranged on the motor shaft, and a gear plate meshing with the driving gear, an eccentric column is arranged on the gear plate, a reciprocating groove is arranged at the inner end of the reciprocating rod, the eccentric column is arranged in the reciprocating groove and can drive the reciprocating rod to perform reciprocating motion, a mounting portion for mounting a saw blade is arranged at the outer end of the reciprocating rod, the mounting portion is exposed outside the housing, a mounting groove is arranged in the housing, the gear plate is arranged in the mounting groove, and a tensioning member penetrating through the housing is arranged at the bottom of the mounting groove The bottom of the gear plate is extended to form a connecting part, and a connecting hole is opened on the connecting part. A tensioning rod is arranged in the tightening hole and the connecting hole. The tensioning rod passes through the tightening hole from the outside of the shell body and is arranged in the connecting hole to be connected with the connecting part; the outer end of the reciprocating rod is provided with a mounting part for installing a saw blade. The user can install the saw blade through the mounting part before using the reciprocating saw to saw the material. When the saw blade is installed, press the control switch again, and the control switch will control the motor to work. Since a driving gear is provided on the motor shaft, the motor will rotate when the motor starts working. At this time, the driving gear on the motor shaft will rotate together. Since the driving gear is meshed with the gear plate, the driving gear The wheel will drive the gear plate to rotate. Since the inner end of the reciprocating rod is provided with a reciprocating groove, the gear plate is provided with an eccentric column, and the eccentric column is arranged in the reciprocating groove, when the gear plate rotates, the eccentric column on the gear plate will rotate together with the gear plate, so that the eccentric column drives the reciprocating rod to reciprocate, so that the saw blade on the mounting part also reciprocates to saw the material. Compared with the reciprocating saws on the market, a gear box is usually arranged inside to install the gear plate, but the arrangement of the gear box not only makes the internal structure of the reciprocating saw complicated, but also increases the production cost of the reciprocating saw. The housing of the utility model is provided with a mounting groove, and the gear plate is arranged in the mounting groove. The bottom of the gear plate is extended to form a connecting The connecting part has a connecting hole, and the bottom of the mounting groove has a tightening hole that penetrates the shell body. The outer surface of the tightening rod has an external thread, and the inner wall of the connecting hole has an internal thread. The gear plate passes through the tightening hole on the shell body through the tightening rod and enters into the connecting hole of the connecting part and is threadedly connected to the connecting part, so that the gear plate can be installed in the mounting groove, which can effectively prevent the gear plate from moving at will inside the reciprocating saw, so that the gear plate can be installed more stably, and the gear plate can always be in meshing state with the driving gear, so that the reciprocating saw can be used normally. This method of fixing the gear plate does not require a gear box, simplifies the internal structure of the shell, and can effectively reduce the production cost of the reciprocating saw. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a stereogram of the utility model.

[0016] Figure 2It is a stereogram of the utility model.

[0017] Figure 3 It is an exploded view of the utility model.

[0018] Figure 4 It is an exploded view of the housing and the reciprocating rod of the utility model.

[0019] Figure 5 yes Figure 4 A partial enlarged view of point A in the middle.

[0020] Figure 6 It is a stereoscopic diagram of the reciprocating rod and the guide member of the utility model.

[0021] Figure 7 It is an exploded view of the reciprocating rod and the guide member of the utility model.

[0022] Figure 8 It is a three-dimensional diagram of the guide member of the utility model.

[0023] Fig. 9 It is an exploded view of the housing and the power transmission device of the utility model.

[0024] Fig.10 It is a structural schematic diagram of the driving gear and the gear plate of the utility model.

[0025] Fig.11 It is an exploded view of the motor, driving gear and gear plate of the utility model.

[0026] Fig.12 It is a stereogram of the gear plate of the utility model.

[0027] Fig.13 It is an exploded view of the housing and the first bearing of the utility model.

[0028] Fig.14 It is a structural schematic diagram of the housing, the sealing plate and the first bearing of the utility model.

[0029] Fig.15 It is an exploded view of the first bearing and the cover plate of the utility model.

[0030] Fig.16 It is a structural schematic diagram of the utility model.

[0031] The meaning of the symbols in the figure:

[0032] 1-housing; 2-reciprocating rod; 3-control switch; 4-motor; 5-driving gear; 6-gear plate;

[0033] 7-eccentric column; 8-reciprocating groove; 9-mounting part; 10-mounting groove; 11-tightening hole; 12-connecting part;

[0034] 13-connecting hole; 14-tension rod; 15-bearing groove; 16-first bearing; 17-first bearing hole;

[0035] 18-abutting portion; 19-limiting portion; 20-limiting hole; 21-cover plate; 22-fixing portion;

[0036] 23-fixing hole; 24-fixing rod; 25-through hole; 26-guide channel; 27-guide member;

[0037] 28-guide hole; 29-baffle; 30-fixing groove; 31-guide block; 32-limiting column;

[0038] 33-abutment block; 34-inner groove; 35-positioning groove; 36-second bearing; 37-second bearing hole;

[0039] 38-control hole; 39-sealing groove; 40-sealing plate. DETAILED DESCRIPTION

[0040] The utility model is further described below in conjunction with specific embodiments:

[0041] A reciprocating saw comprises a housing 1, a power transmission device arranged in the housing 1, a reciprocating rod 2 connected to the power transmission device, and a control switch 3 for controlling the operation of the power transmission device, wherein the power transmission device comprises a motor 4, a driving gear 5 arranged on the motor shaft, and a gear plate 6 meshing with the driving gear 5, an eccentric column 7 is arranged on the gear plate 6, a reciprocating groove 8 is opened at the inner end of the reciprocating rod 2, the eccentric column 7 is arranged in the reciprocating groove 8 and can drive the reciprocating rod 2 to reciprocate, and the outer end of the reciprocating rod 2 is provided with a A mounting portion 9 for mounting a saw blade, the mounting portion 9 is exposed outside the housing 1, a mounting groove 10 is provided inside the housing 1, the gear plate 6 is arranged inside the mounting groove 10, a tightening hole 11 penetrating the housing 1 is provided at the bottom of the mounting groove 10, a connecting portion 12 is extended from the bottom of the gear plate 6, a connecting hole 13 is provided on the connecting portion 12, a tightening rod 14 is provided inside the tightening hole 11 and the connecting hole 13, the tightening rod 14 passes through the tightening hole 11 from outside the housing 1, is arranged inside the connecting hole 13 and is connected to the connecting portion 12;The outer end of the reciprocating rod 2 is provided with a mounting portion 9 for mounting a saw blade. The user can install the saw blade through the mounting portion 9 before using the reciprocating saw to saw materials. When the saw blade is installed, the control switch 3 is pressed again, and the control switch 3 will control the motor 4 to work. Since a driving gear 5 is provided on the motor shaft, the motor 4 will cause the motor shaft to rotate after starting to work. At this time, the driving gear 5 on the motor shaft will rotate together. Since the driving gear 5 is meshed with the gear plate 6, the driving gear 5 will drive the gear plate 6 to rotate. Since a reciprocating groove 8 is provided at the inner end of the reciprocating rod 2, an eccentric column 7 is provided on the gear plate 6, and the eccentric column 7 is arranged in the reciprocating groove 8, when the gear plate 6 rotates, the eccentric column 7 on the gear plate 6 will rotate together with the gear plate 6, so that the eccentric column 7 drives the reciprocating rod 2 to reciprocate, so that the saw blade on the mounting portion 9 also reciprocates to saw materials. Compared with the reciprocating saws currently on the market, a gear box is usually provided inside to install the gear plate 6, but the setting of the gear box is not only The structure inside the reciprocating saw is complicated, and the production cost of the reciprocating saw is increased. The housing 1 of the utility model is provided with a mounting groove 10, and the gear plate 6 is arranged in the mounting groove 10. A connecting portion 12 is formed extending from the bottom of the gear plate 6, and a connecting hole 13 is provided on the connecting portion 12. A tightening hole 11 penetrating the housing 1 is provided at the bottom of the mounting groove 10. The outer surface of the tightening rod 14 is provided with an external thread, and the inner wall of the connecting hole 13 is provided with an internal thread. The gear plate 6 passes through the tightening hole 11 on the housing 1 through the tightening rod 14 and enters the connecting hole 13 of the connecting portion 12 to be threadedly connected with the connecting portion 12, so that the gear plate 6 can be installed in the mounting groove 10, which can effectively prevent the gear plate 6 from moving randomly inside the reciprocating saw, so that the gear plate 6 can be installed more stably, and the gear plate 6 can always be in meshing state with the driving gear 5, so that the reciprocating saw can be used normally. This fixing method of the gear plate 6 does not require a gear box, so that the internal structure of the housing 1 is simple, and the production cost of the reciprocating saw can be effectively reduced. ;

[0042] Preferably, a bearing groove 15 is provided in the mounting groove 10, the tightening hole 11 is arranged at the bottom of the bearing groove 15, a first bearing 16 is provided in the bearing groove 15, a first bearing hole 17 is provided on the first bearing 16, the first bearing hole 17 corresponds to the position of the tightening hole 11, the connecting portion 12 is provided in the first bearing hole 17, an abutting portion 18 is extended and formed on the connecting portion 12, and the abutting portion 18 abuts against the upper surface of the first bearing 16; the first bearing 16 is provided in the bearing groove 15 in the mounting groove 10, and the connecting portion 12 at the bottom of the gear plate 6 is provided at the first bearing hole 17. In a bearing hole 17, since the first bearing hole 17 on the first bearing 16 corresponds to the position of the tightening hole 11, it is convenient for the tightening rod 14 to enter the connecting hole 13 and connect with the connecting part 12, and the connecting part 12 is extended with an abutting part 18 to abut against the upper surface of the first bearing 16, which can avoid the lower surface of the gear plate 6 from abutting against the upper surface of the first bearing 16 and reduce the contact area. The setting of the first bearing 16 can also avoid the connection part 12 from contacting the inner wall of the bearing groove 15, which can reduce the friction generated by the gear plate 6 during the rotation process, so that the gear plate 6 can rotate more smoothly.

[0043] Preferably, a limiting portion 19 is provided in the installation groove 10, and the limiting portion 19 is arranged around the bearing groove 15. A limiting hole 20 is provided on the limiting portion 19. A cover plate 21 for covering the first bearing 16 in the bearing groove 15 is provided in the installation groove 10. A fixing portion 22 is extended and formed on the cover plate 21. A fixing hole 23 is provided on the fixing portion 22. A fixing rod 24 is provided in the fixing hole 23 and the limiting hole 20. The upper surface of the first bearing 16 abuts against the cover plate 21. A through hole 25 is provided on the cover plate 21 for the connection portion 12 to pass through. Due to the limiting portion 19 It is arranged around the bearing groove 15, and a limiting hole 20 is opened on the limiting portion 19. The cover plate 21 covers the first bearing 16 in the bearing groove 15 through the limiting hole 20 and the fixing rod 24 in the fixing hole 23, and the lower surface of the cover plate 21 abuts against the upper surface of the first bearing 16, which can limit the first bearing 16 from moving freely in the bearing groove 15, so that the reciprocating saw can be used normally, and the arrangement of the through hole 25 on the cover plate 21 enables the connecting portion 12 at the bottom of the gear plate 6 to enter the first bearing hole 17 of the first bearing 16 through the through hole 25, so that the gear plate 6 can be smoothly installed in the mounting groove 10.

[0044] Preferably, a guide groove 26 is further provided in the shell 1, a guide member 27 is provided in the guide groove 26, a guide hole 28 is provided on the guide member 27, and the outer end of the reciprocating rod 2 passes through the guide hole 28 and is arranged outside the shell 1; a guide hole 28 is provided on the guide member 27 in the guide groove 26, and the outer end of the reciprocating rod 2 passes through the guide hole 28 and is arranged outside the shell 1, so that the angle of the reciprocating rod 2 will not deviate during the reciprocating motion of the reciprocating rod 2, so that the saw blade on the outer end mounting portion 9 of the reciprocating rod 2 can smoothly saw the material.

[0045] Preferably, baffles 29 are symmetrically arranged in the guide channel 26, the guide member 27 is arranged between the symmetrical baffles 29, a fixing groove 30 is arranged at the bottom of the guide channel 26, a guide block 31 is extended from the bottom of the guide member 27, and the guide block 31 is arranged in the fixing groove 30, and limiting columns 32 are symmetrically arranged in the shell 1, and the symmetrical limiting columns 32 are respectively arranged on both sides of the guide channel 26, and abutment blocks 33 are extended on both sides of the guide member 27, and inner grooves 34 are formed on the abutment blocks 33, and the limiting columns 32 are arranged in the inner grooves 34; since the guide member 27 is arranged between the symmetrical baffles 29, and the two ends of the guide member 27 are respectively abutted against the two baffles 29, the baffles 29 can be limited. The guide member 27 moves forward and backward along the guide groove 26, and the guide block 31 extended from the bottom of the guide member 27 is arranged in the fixed groove 30 at the bottom of the guide groove 26, which can prevent the guide member 27 from rotating in the guide groove 26, and the shell 1 is symmetrically provided with limit columns 32, and the symmetrical limit columns 32 are respectively arranged on both sides of the guide groove 26, and the abutment blocks 33 on both sides of the guide member 27 are provided with inner grooves 34. The limit columns 32 are arranged in the inner grooves 34 and enter into an abutment state with the abutment blocks 33, so that the guide member 27 can be stably installed in the guide groove 26. When the reciprocating rod 2 reciprocates in the guide hole 28 of the guide member 27, the guide member 27 will not move with the reciprocating rod 2, so that the reciprocating saw is smoother during use.

[0046] Preferably, a positioning groove 35 is provided in the housing 1, a second bearing 36 is provided in the positioning groove 35, a second bearing hole 37 is opened in the second bearing 36, and one end of the driving gear 5 is arranged in the second bearing hole 37; the first bearing is installed in the positioning groove 35 in the housing 1, so that the first bearing 16 is installed more stably and firmly, and one end of the driving gear 5 is arranged in the second bearing hole 37 of the second bearing 36, when the motor 4 starts to work and drives the driving gear 5 to rotate through the motor shaft, the angle of the driving gear 5 will not deviate, so that the driving gear 5 can always be in a meshing state with the gear plate 6, and the setting of the second bearing 36 can avoid the outer wall of the driving gear 5 from contacting the inner wall of the positioning groove 35, which can effectively reduce the friction generated by the driving gear 5 during the rotation process, increase the service life of the driving gear 5, and make the driving gear 5 rotate more smoothly.

[0047] Preferably, a control hole 38 is opened on the shell 1, and one side of the control switch 3 is arranged outside the shell 1 through the control hole 38; one side of the control switch 3 is arranged outside the shell 1 through the control hole 38 on the shell 1, so that the user can control the reciprocating saw to work through the control switch 3.

[0048] Preferably, a sealing groove 39 is opened on the shell 1, the connecting hole 13 corresponds to the position of the sealing groove 39 and passes through the bottom of the sealing groove 39, and a sealing plate 40 covering the connecting hole 13 is provided in the sealing groove 39; since the connecting hole 13 corresponds to the position of the sealing groove 39 and passes through the bottom of the sealing groove 39, the sealing plate 40 in the sealing groove 39 can cover the connecting hole 13 at the bottom of the sealing groove 39, thereby making the reciprocating saw more beautiful as a whole.

[0049] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A reciprocating saw, comprising a housing (1), a power transmission device arranged in the housing (1), a reciprocating rod (2) connected to the power transmission device, and a control switch (3) for controlling the operation of the power transmission device, characterized in that: The power transmission device comprises a motor (4), a driving gear (5) arranged on the motor shaft, and a gear plate (6) meshing with the driving gear (5); an eccentric column (7) is arranged on the gear plate (6); a reciprocating groove (8) is provided at the inner end of the reciprocating rod (2); the eccentric column (7) is arranged in the reciprocating groove (8) and can drive the reciprocating rod (2) to perform reciprocating motion; a mounting portion (9) for mounting a saw blade is provided at the outer end of the reciprocating rod (2); the mounting portion (9) is exposed outside the housing (1); and a mounting portion (9) is provided inside the housing (1). A mounting groove (10), the gear plate (6) is arranged in the mounting groove (10), the bottom of the mounting groove (10) is provided with a tightening hole (11) penetrating the shell (1), the bottom of the gear plate (6) is extended to form a connecting portion (12), the connecting portion (12) is provided with a connecting hole (13), the tightening hole (11) and the connecting hole (13) are provided with a tightening rod (14), the tightening rod (14) passes through the tightening hole (11) from the outside of the shell (1), is arranged in the connecting hole (13) and is connected to the connecting portion (12).

2. A reciprocating saw according to claim 1, characterized in that: A bearing groove (15) is provided in the mounting groove (10), the tensioning hole (11) is arranged at the bottom of the bearing groove (15), a first bearing (16) is provided in the bearing groove (15), a first bearing hole (17) is provided on the first bearing (16), the first bearing hole (17) corresponds to the position of the tensioning hole (11), the connecting portion (12) is provided in the first bearing hole (17), an abutting portion (18) is extended and formed on the connecting portion (12), and the abutting portion (18) abuts against the upper surface of the first bearing (16).

3. A reciprocating saw according to claim 2, characterized in that: A limiting portion (19) is provided in the installation groove (10), the limiting portion (19) is arranged around the bearing groove (15), a limiting hole (20) is provided on the limiting portion (19), a cover plate (21) is provided in the installation groove (10) for covering the first bearing (16) in the bearing groove (15), a fixing portion (22) is extended and formed on the cover plate (21), a fixing hole (23) is provided on the fixing portion (22), a fixing rod (24) is provided in the fixing hole (23) and the limiting hole (20), the upper surface of the first bearing (16) is in contact with the cover plate (21), and a through hole (25) is provided on the cover plate (21) for the connection portion (12) to pass through.

4. A reciprocating saw according to claim 1, characterized in that: A guide channel (26) is also provided in the housing (1), a guide member (27) is provided in the guide channel (26), a guide hole (28) is provided on the guide member (27), and the outer end of the reciprocating rod (2) passes through the guide hole (28) and is arranged outside the housing (1).

5. A reciprocating saw according to claim 4, characterized in that: Baffles (29) are symmetrically arranged in the guide channel (26), the guide member (27) is arranged between the symmetrical baffles (29), a fixing groove (30) is arranged at the bottom of the guide channel (26), a guide block (31) is extended and formed at the bottom of the guide member (27), and the guide block (31) is arranged in the fixing groove (30), and limiting columns (32) are symmetrically arranged in the shell (1), and the symmetrical limiting columns (32) are respectively arranged on both sides of the guide channel (26), and abutment blocks (33) are extended and formed on both sides of the guide member (27), and the abutment blocks (33) are each provided with an inner groove (34), and the limiting column (32) is arranged in the inner groove (34).

6. A reciprocating saw according to any one of claims 1 to 5, characterized in that: A positioning groove (35) is provided in the housing (1), a second bearing (36) is provided in the positioning groove (35), a second bearing hole (37) is provided in the second bearing (36), and one end of the driving gear (5) is arranged in the second bearing hole (37).

7. A reciprocating saw according to any one of claims 1 to 5, characterized in that: The housing (1) is provided with a control hole (38), and one side of the control switch (3) passes through the control hole (38) and is arranged outside the housing (1).

8. A reciprocating saw according to any one of claims 1 to 5, characterized in that: The housing (1) is provided with a blocking groove (39), the connection hole (13) corresponds to the position of the blocking groove (39) and passes through the bottom of the blocking groove (39), and a blocking plate (40) covering the connection hole (13) is provided in the blocking groove (39).

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