Bench saw workbench with multifunctional backer and operation method of bench saw workbench

Abstract

The invention discloses a bench saw workbench with a multifunctional backer and an operation method thereof.The bench saw workbench comprises a workbench body, the upper surface of the workbench body is a workbench surface, the workbench body is provided with a sliding rail assembly and a backer assembly, the backer assembly is connected to the workbench body through the sliding rail assembly, and the backer assembly is connected to the workbench body through the sliding rail assembly; the backer assembly comprises a backer body and backer seats arranged at the two ends of the backer body, the backer seats are detachably and fixedly connected with the sliding rail assembly, so that the backer assembly can be installed on the sliding rail assembly in the first direction and can also be installed on the sliding rail assembly in the second direction, the first direction and the second direction are opposite to each other, and the backer assembly can be installed on the sliding rail assembly in the second direction. The electric tool has the beneficial effects that the backer base is installed on the sliding rail assembly in the first direction or the second direction, the backer body is switched between the first position and the second position on the backer base, and therefore the electric tool has three working states when working by adjusting the position of the backer body and being matched with the workbench body.

Description

Technical Field

[0001] The present invention relates to the technical field of electric tools, and in particular to a table saw workbench with a multifunctional backrest and an operating method thereof. Background Art

[0002] As a kind of electric tool, a table saw is a cutting tool with a workbench body. Usually, a backrest for materials to lean against is installed on the workbench body of the table saw.

[0003] After searching, a Chinese utility model patent (authorization announcement number: CN215618633U) provides a multifunctional backrest structure, including a main backrest, both ends of which are connected to a backrest seat for installation, and a connecting plate is rotatably connected to the backrest seat, the connecting plate is an L-shaped structure, and an auxiliary backrest is connected between the two connecting plates.

[0004] In order to allow the connecting plate to rotate on the backrest seat, the position of the auxiliary backrest can be adjusted according to usage needs. Furthermore, a positioning boss is connected to the backrest seat, and one end of the connecting plate is rotatably connected to the positioning boss.

[0005] In the prior art, in order to enable the auxiliary backrest to rotate relative to the main backrest, a connecting plate is rotated around a positioning boss on the backrest seat, so that the position of the auxiliary backrest can be adjusted according to usage needs.

[0006] A step screw is further provided on the connecting plate, a first positioning groove corresponding to the step screw is provided above the backrest, a second positioning groove corresponding to the step screw is also provided on the side of the backrest, and a third positioning groove is provided below the second positioning groove.

[0007] Therefore, when the auxiliary backrest switches positions, it is necessary to use step screws to cooperate with different positioning slots to switch between various states.

[0008] From the above-mentioned prior art, it can be seen that the defect is that the connecting plate needs to cooperate with different positioning grooves through step screws to achieve switching between various states, which makes the overall structure have more positioning points, the overall backrest structure is more complicated, and there are more steps in assembly. Therefore, the above-mentioned shortcomings need to be improved urgently. Summary of the Invention

[0009] The purpose of the present invention is to solve the above problems. The present invention provides a table saw workbench with a multifunctional backrest and an operating method thereof, which has the advantages of simple structure and lower cost.

[0010] To achieve the above-mentioned object, the present invention provides the following technical solution: a table saw workbench with a multifunctional backrest, comprising a workbench body, the upper surface of the workbench body being a work surface, a slide rail assembly and a backrest assembly being provided on the workbench body, the backrest assembly being connected to the workbench body via the slide rail assembly, the backrest assembly comprising the backrest body and backrest seats provided at both ends of the backrest body, the backrest seats being detachably fixedly connected to the slide rail assembly, so that the backrest assembly can be mounted to the slide rail assembly in a first direction or in a second direction, wherein the first direction and the second direction are opposite to each other; The backrest body includes a first backrest plate and a second backrest plate, the first backrest plate and the second backrest plate cooperate to form an L-shape, the backrest body is movably connected to the backrest seat and forms a rotation fulcrum, and the backrest body can rotate relative to the backrest seat between a first position and a second position with the rotation fulcrum as the rotation center; The first backing plate has a first abutting surface, a second abutting surface and a contact surface, the first abutting surface is arranged opposite to the contact surface, and the second abutting surface is located between the first abutting surface and the contact surface, the second backing plate has a supporting surface and a third abutting surface, the supporting surface is adjacent to the first abutting surface, and the third abutting surface is arranged opposite to the supporting surface; When the backrest body is in the first position, the support surface is flush with the work surface; When the backrest body is located at the second position, the contact surface and the work surface are in a coplanar fit or a clearance fit.

[0011] Preferably, a limiting mechanism is formed between the backrest seat and the backrest body for limiting the rotation angle of the backrest body, and the limiting mechanism includes an arc track groove provided on the backrest seat and a slider provided on the backrest body, and the slider is slidably connected to the arc track groove.

[0012] Preferably, the limiting mechanism also includes an arc-shaped limiting groove arranged on the backrest seat and a positioning pin arranged on the backrest body, the arc-shaped limiting groove and the arc-shaped trajectory groove are arranged correspondingly, the positioning pin is slidingly connected to the arc-shaped limiting groove, and positioning grooves that cooperate with the positioning pin are formed at both ends of the arc-shaped limiting groove.

[0013] Preferably, the positioning pin has a mating section, a clamping section and a connecting section, the mating section is slidably connected to the arc-shaped limiting groove, the connecting section is slidably fitted on the backrest body, the positioning groove is clamped in fit with the clamping section, and a reset spring is provided on the outer periphery of the positioning pin, and the reset spring always has a tendency to push the clamping section to move closer to the arc-shaped limiting groove.

[0014] Preferably, the arc-shaped limiting groove passes through the backrest seat, and the positioning pin further has an operating end, and the operating end of the positioning pin passes through the arc-shaped limiting groove and extends out of the backrest seat.

[0015] Preferably, the slide rail assembly includes two slide rails extending along the length direction of the workbench body, the two slide rails are respectively slidably fitted on the two ends of the workbench body, the two backrests are respectively installed on the corresponding slide rails, and the backrests are provided with a locking mechanism for fixing the backrests to the slide rails.

[0016] Preferably, the slide rails are provided with slide grooves, the locking mechanisms include bolts, nuts and washers, the nuts are slidably fitted in the slide grooves, the washers are arranged on the outer periphery of the bolts, the backrest is provided with a connecting plate, the washers are arranged between the connecting plate and the slide rails, and the bolts are threadedly fitted with the nut.

[0017] Preferably, the inner wall of the opening side of the slide is a contact wall, and the inner wall on the side opposite to the contact wall is an abutment wall. The locking mechanism also includes an integrally formed swing lever and an eccentric block. The swing lever is rotatably engaged with the backrest seat. The backrest seat is provided with a through groove connected to the slide. The eccentric block is movably arranged in the through groove. The eccentric block is in abutment with the abutment wall of the slide, and the eccentric block is rotated to adjust the engagement between the nut and the contact wall.

[0018] Preferably, a locking assembly is further provided on the workbench body, and the locking assembly includes a shift rod, a rotating shaft, a connecting rod assembly, a first plug rod and a second plug rod. The rotating shaft is rotatably mounted on the workbench body, one end of the rotating shaft is fixedly fitted on the shift rod, and the other end of the rotating shaft is fixedly fitted with the connecting rod assembly. The first plug rod and the second plug rod are respectively mounted on the two ends of the connecting rod assembly, and the first plug rod and the second plug rod are slidably mounted on the workbench body, and the ends of the first plug rod and the second plug rod are respectively abutted against the corresponding slide rails.

[0019] A method for operating a table saw workbench with a multifunctional backrest, wherein when a workpiece to be processed needs to be positioned with the aid of a first abutment surface, the backrest seat is mounted on a slide rail assembly in a first direction, and the backrest body is rotated to the first position; When the workpiece to be processed needs to be positioned with the aid of the second abutment surface, the backrest is mounted on the slide rail assembly in the second direction, and the backrest body is rotated to the second position; When the workpiece to be processed needs to be positioned with the help of the third abutting surface, the backrest is installed to the slide rail assembly in the first direction, and the backrest body is rotated to the second position.

[0020] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a table saw workbench with a multifunctional backrest and an operating method thereof, wherein the backrest seat is installed on the slide rail assembly in a first direction or a second direction, and the backrest body is switched between a first position and a second position on the backrest seat. Therefore, by adjusting the position of the backrest body and cooperating with the workbench body, the power tool has three working states when working, and the backrest body can be switched between a high backrest and a low backrest. In addition, it can also serve to extend the workbench surface, thereby being able to meet the different needs of users when cutting materials, and the structure is simpler, the parts processing difficulty is lower, and therefore the cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 A schematic diagram of a first-viewing perspective three-dimensional structure of the present invention in a first working state; Figure 3 for Figure 2 Schematic diagram of the enlarged structure of A in FIG; Figure 4 A schematic diagram of the third perspective structure of the present invention in the first working state; Figure 5 A schematic diagram of a partial three-dimensional structure of the present invention in a second working state; Figure 6 A schematic diagram of a partial three-dimensional structure of the present invention in a third working state; Figure 7 It is a partial top view schematic diagram of the structure of the present invention in the first working state; Figure 8 This is a schematic diagram of the three-dimensional structure of the bottom portion of the present invention in the second working state; Figure 9 It is a schematic diagram of the three-dimensional structure of the backrest body of the present invention; Figure 10 It is a side view structural diagram of the backrest body of the present invention; Figure 11 Schematic diagram of the three-dimensional structure of the swing lever of the present invention; Figure 12 for Figure 7 Schematic diagram of the enlarged structure of B in FIG; Figure 13 It is a partial cross-sectional structural diagram of the locking mechanism of the present invention; Figure 14 for Figure 8 Schematic diagram of the enlarged structure of C in FIG; Figure 15 It is a schematic diagram of a partial three-dimensional structure of the present invention; Figure 16 It is a schematic diagram of a partial cross-sectional structure of the present invention.

[0022] Description of the drawings: 1. Workbench body; 10. Cutting saw; 11. Workbench surface; 2. Slide rail assembly; 21. Slide rail; 210. Slide groove; 211. Rack; 22. Pointer; 23. Ruler; 24. Connecting shaft; 25. Gear; 26. Knob; 3. Backrest assembly; 301. Arc limit groove; 302. Arc track groove; 31. Backrest body; 3101. First backrest plate; 3102. Second backrest plate; 311. First abutment surface; 312. Second abutment surface; 313. Third abutment surface; 314. Support surface; 315. Contact surface; 32. Backrest seat; 320. Step surface; 321. Support block; 322. Connecting table; 33. Positioning pin; 3301. Operating end; 3302. Matching section; 3303. Clamp Connecting section; 3304, connecting section; 331, rotating shaft; 332, slider; 34, swing rod; 341, eccentric block; 342, clamping block; 35, connecting plate; 361, bolt; 362, nut; 363, gasket; 37, clamping groove; 38, return spring; 4, locking assembly; 41, shift rod; 42, rotating shaft; 43, connecting rod assembly; 431, first connecting rod; 432, second connecting rod; 433, third connecting rod; 44, connecting rod; 441, first rod body; 4411, third ring plate; 442, second rod body; 443, sleeve; 45, first plug rod; 451, first ring plate; 46, second plug rod; 461, second ring plate; 5, fixing seat; 61, first spring; 62, second spring; 63, third spring. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] like Figures 1-16 As shown, a table saw workbench with a multifunctional backrest and an operating method thereof, comprising a workbench body 1, a cutting saw 10 is provided below the workbench body 1, the upper surface of the workbench body 1 is a workbench surface 11, a slide rail assembly 2 and a backrest assembly 3 are provided on the workbench body 1, the backrest assembly 3 is connected to the workbench body 1 through the slide rail assembly 2, the backrest assembly 3 comprises a backrest body 31, and backrest seats 32 provided at both ends of the backrest body 31, the backrest seats 32 are detachably fixedly connected to the slide rail assembly 2, so that the backrest assembly 3 can be installed to the slide rail assembly 2 in a first direction and can also be installed to the slide rail assembly 2 in a second direction, wherein the first direction and the second direction are opposite to each other, and the first direction and the second direction are both length directions of the workbench body 1; The backrest body 31 includes a first backrest plate 3101 and a second backrest plate 3102. The first backrest plate 3101 and the second backrest plate 3102 cooperate to form an L-shape. The backrest body 31 is movably connected to the backrest seat 32 and forms a rotation fulcrum. The backrest body 31 can rotate relative to the backrest seat 32 between a first position and a second position with the rotation fulcrum as the rotation center. It should be noted that the rotation fulcrum is the rotation shaft 331 in this application. The first backing plate 3101 has a first abutting surface 311, a second abutting surface 312, and a contact surface 315. The first abutting surface 311 is arranged opposite to the contact surface 315, and the second abutting surface 312 is located between the first abutting surface 311 and the contact surface 315. The second backing plate 3102 has a supporting surface 314 and a third abutting surface 313. The supporting surface 314 is adjacent to the first abutting surface 311, and the third abutting surface 313 is arranged opposite to the supporting surface 314. When the backrest body 31 is in the first position, the support surface 314 is flush with the work surface 11; When the backrest body 31 is located at the second position, the contact surface 315 and the work surface 11 are in a coplanar fit or a clearance fit.

[0025] A limiting mechanism is formed between the backrest seat 32 and the backrest body 31 for limiting the rotation angle of the backrest body 31. The limiting mechanism includes an arc track groove 302 provided on the backrest seat 32 and a slider 332 provided on the backrest body 31. The slider 332 is slidably connected to the arc track groove 302.

[0026] The arc angle of the arc-shaped track groove 302 is 90°, and the slider 332 moves between a first position and a second position in the arc-shaped track groove 302 .

[0027] The limiting mechanism also includes an arc-shaped limiting groove 301 arranged on the backrest seat 32 and a positioning pin 33 arranged on the backrest body 31. The arc-shaped limiting groove 301 is corresponding to the arc-shaped trajectory groove 302. The positioning pin 33 is slidingly connected to the arc-shaped limiting groove 301. Positioning grooves that cooperate with the positioning pin 33 are formed at both ends of the arc-shaped limiting groove 301.

[0028] Furthermore, the arc-shaped limiting groove 301 and the arc-shaped trajectory groove 302 are concentrically arranged.

[0029] The positioning pin 33 has a matching section 3302, a clamping section 3303 and a connecting section 3304. The matching section 3302 is slidably connected to the arc-shaped limiting groove 301, and the connecting section 3304 is slidably fitted on the backrest body 31. The positioning groove is clamped with the clamping section 3303, and a reset spring 38 is sleeved on the outer periphery of the positioning pin 33. The reset spring 38 always has the tendency to push the clamping section 3303 to move closer to the arc-shaped limiting groove 301.

[0030] The aperture of the positioning groove is larger than the width of the arc-shaped limiting groove 301 , the clamping section 3303 is set in a conical surface, and the maximum diameter of the clamping section 3303 is larger than the aperture of the positioning groove, and the diameter of the matching section 3302 is smaller than the width of the arc-shaped limiting groove 301 .

[0031] The arc-shaped limiting groove 301 passes through the backrest 32 , and the positioning pin 33 further has an operating end 3301 . The operating end 3301 of the positioning pin 33 passes through the arc-shaped limiting groove 301 and extends out of the backrest 32 .

[0032] When the backrest body 31 needs to be adjusted to switch between the first position and the second position, the operating end 3301 is first pressed to disengage the engaging section 3303 from the positioning groove. At this time, the backrest body 31 can be rotated so that the backrest body 31 can be switched between the first position and the second position. When the backrest body 31 is in the first position or the second position, the operating end 3301 is released, and the return spring 38 pushes the engaging section 3303 of the positioning pin 33 to cooperate with the corresponding positioning groove, thereby locking the backrest body 31.

[0033] The first backrest plate 3101 and the second backrest plate 3102 are integrally connected or split fixedly connected, and the rotation fulcrum is located at or near the junction of the first backrest plate 3101 and the second backrest plate 3102. The rotation fulcrum in this application is located at one end of the first backrest plate 3101 near the junction of the first backrest plate 3101 and the second backrest plate 3102, and the limiting mechanism is arranged between the second backrest plate 3102 and the backrest seat 32.

[0034] By switching the slider 332 between the first position and the second position in the arc-shaped track groove 302 and installing the backrest assembly 3 on the slide rail assembly 2 in the first direction and the second direction, the following three working states can be achieved: In the first working state, a long material is cut: when the backrest assembly 3 is mounted on the slide rail assembly 2 in the first direction and the slider 332 is in the first position, the first abutting surface 311 cooperates with the work surface 11 to cut the material. The first abutting surface 311 and the work surface 11 are perpendicular to each other, and the supporting surface 314 and the work surface 11 are located in the same plane. Therefore, by moving the slide rail assembly 2 to adjust the position of the backrest body 31, the supporting surface 314 can extend the work surface 11, thereby enabling the cutting of long materials. The second working state is for cutting thicker materials: when the backrest assembly 3 is mounted on the slide rail assembly 2 in the first direction and the slider 332 is in the second position, the third abutting surface 313 cooperates with the work surface 11 to cut materials. The third abutting surface 313 and the work surface 11 are perpendicular to each other, and in this application, the contact surface 315 is slightly higher than the work surface 11. At this time, the backrest body 31 can be moved above the work surface 11 of the workbench. The above situation is suitable for cutting thicker materials; The third working state is to cut thinner materials: when the backrest assembly 3 is installed on the slide rail assembly 2 through the second direction and the slider 332 is in the second position, the second abutment surface 312 cooperates with the work surface 11 to cut materials. The second abutment surface 312 and the work surface 11 are perpendicular to each other, and in this application, the contact surface 315 is slightly higher than the work surface 11. At this time, the backrest body 31 can be moved above the work surface 11 of the workbench. The above situation is suitable for cutting thinner materials.

[0035] There are three working states between the backrest body 31 and the workbench body 1, which can meet the different needs of users when cutting materials. In addition, the structure is simpler, the parts processing difficulty is lower, and therefore the cost is lower.

[0036] Further optimized, the backrest seat 32 has a support block 321, and the support block 321 is provided with a step surface 320. When the backrest body 31 is rotated to the first position, the lower surface of the first backrest plate 3101 is placed on the step surface 320, and the step surface 320 plays a role in supporting the backrest body 31, thereby improving the strength of the overall structure.

[0037] The slide rail assembly 2 includes two slide rails 21 extending along the length direction of the workbench body 1. The two slide rails 21 are respectively slidably fitted at both ends of the workbench body 1. The two backrests 32 are respectively installed on the corresponding slide rails 21. The backrests 32 are provided with a locking mechanism for fixing the backrests 32 to the slide rails 21.

[0038] The slide rails 21 are each provided with a slide groove 210, and the locking mechanisms include a bolt 361, a nut 362 and a gasket 363. The nut 362 is slidably fitted in the slide groove 210, and the gasket 363 is arranged on the outer periphery of the bolt 361. A connecting plate 35 is provided on the backrest 32, and the gasket 363 is arranged between the connecting plate 35 and the slide rail 21. The bolt 361 is threadedly fitted with the nut 362, and the nut 362 is slidably fitted in the slide groove 210, so that the nut 362 has the function of acting as a sliding block, and the nut 362 can slide in the slide groove 210. By rotating the bolt 361, the connecting plate 35 can be locked to the slide rail 21 or the connecting plate 35 can be loosened.

[0039] Further optimized, the backrest seat 32 is provided with a connecting platform 322, the open side of the slide groove 210 of the slide rail 21 is a contact wall, and the side opposite to the contact wall is an abutment wall, and the locking mechanism also includes a swing rod 34 and an eccentric block 341, the eccentric block 341 and the swing rod 34 are integrally formed, and the swing rod 34 is rotatably engaged on the connecting platform 322, and the backrest seat 32 is provided with a through groove connected to the slide groove 210, and the slide groove 210 has an abutment surface that abuts and cooperates with the eccentric block 341, and the eccentric block 341 is movably arranged in the through groove, and the eccentric block 341 abuts and cooperates with the abutment wall of the slide groove 210, and the eccentric block 341 rotates and cooperates with the abutment wall to adjust the cooperation between the nut 362 and the contact wall.

[0040] The swing lever 34 is further provided with a block 342 , and the connecting platform 322 is provided with a slot 37 that cooperates with the block 342 . When the block 342 cooperates with the slot 37 , the swing lever 34 can be locked to prevent the swing lever 34 from moving easily.

[0041] The swing arm 34 can rotate between a third position and a fourth position around the connection between the swing arm 34 and the connecting platform 322. At this time, the bolt 361 and the nut 362 are adjusted to a state that enables the nut 362 to move in the slide groove 210, and when the swing arm 34 is in the third position, it can fix the connecting plate 35.

[0042] When the swing lever 34 is rotated from the third position to the fourth position, the swing lever 34 is rotated toward the side closer to the slide rail 21 until the block 342 is engaged with the slot 37. At this time, the eccentric block 341 is engaged with the abutment wall, thereby moving the connecting plate 35 away from the slide rail 21, so that the connecting plate 35 is engaged with the head of the bolt 361. Then, the movement of the connecting plate 35 drives the bolt 361 and the nut 362 to move away from the slide rail 21, so that the nut 362 is in contact with the contact wall of the slide groove 210. The friction between the nut 362 and the contact wall is increased through the surface contact, so that the nut 362 and the slide rail 21 do not move relative to each other, thereby achieving the function of locking the backrest seat 32. When the swing arm 34 rotates from the fourth position to the third position, the swing arm 34 rotates toward the side away from the slide rail 21, the block 342 disengages from the slot 37, and the eccentric block 341 disengages from the abutment surface, so that the connecting plate 35 disengages from the abutment with the head of the bolt 361, and thus the nut 362 disengages from the contact wall of the slide groove 210, thereby enabling relative movement between the nut 362 and the slide rail 21, and thus the movement of the nut 362 in the slide groove 210 can be driven by pushing the backrest seat 32 or the backrest body 31.

[0043] The slide rail assembly 2 also includes a matching ruler 23 and a pointer 22. The ruler 23 is installed on the workbench body 1, and the ruler 23 is installed on the slide rail 21. Therefore, the position of the backrest body 31 can be adjusted by the position of the pointer 22 on the ruler 23, thereby meeting the user's needs for cutting different lengths.

[0044] The slide rails 21 are each provided with a rack 211 , and the workbench body 1 is provided with a first mounting seat. A connecting shaft 24 is rotatably fitted on the first mounting seat. Both ends of the connecting shaft 24 are respectively provided with gears 25 meshing with the corresponding rack 211 .

[0045] A knob 26 is provided at one end of the connecting shaft 24 . By rotating the knob 26 , the gear 25 is rotated, which in turn drives the rack 211 to move, and further drives the slide rail 21 to move, thereby playing a role in fine-tuning the backrest body 31 .

[0046] The locking assembly 4 includes a shift rod 41, a rotating shaft 42, a connecting rod assembly 43, a first plug rod 45 and a second plug rod 46. A second mounting seat is provided on the workbench body 1. The rotating shaft 42 rotates with the second mounting seat. One end of the rotating shaft 42 is fixedly fitted on the shift rod 41, and the other end of the rotating shaft 42 is fixedly fitted with the connecting rod assembly 43. The first plug rod 45 and the second plug rod 46 are respectively installed at both ends of the connecting rod assembly 43. The first plug rod 45 and the second plug rod 46 extend along the width direction of the workbench body 1. The first plug rod 45 and the second plug rod 46 realize movement in the width direction of the workbench body 1 through the movement of the connecting rod assembly 43. The ends of the first plug rod 45 and the second plug rod 46 respectively abut and fit with the corresponding slide rails 21.

[0047] like Figure 8 and Figure 14 The connecting rod assembly 43 includes a first connecting rod 431, a second connecting rod 432, a third connecting rod 433 and a connecting rod 44. The middle part of the first connecting rod 431 is fixedly matched with the end of the rotating shaft 42. The first connecting rod 431 has a connecting end, the second connecting rod 432 has a first end and a second end, the third connecting rod 433 has a third end and a fourth end, and the connecting rod 44 has a fifth end and a sixth end. The connecting end of the first connecting rod 431 is hingedly matched with the first end of the second connecting rod 432, the second end of the second connecting rod 432 is hingedly matched with the third end of the third connecting rod 433, the fourth end of the third connecting rod 433 is hingedly matched with the end of the first plug rod 45, the fifth end of the connecting rod 44 is hingedly matched with the second end of the second connecting rod 432, and the sixth end of the connecting rod 44 is hingedly matched with the end of the second plug rod 46.

[0048] The workbench body 1 is provided with several fixed seats 5, and the first insertion rod 45 and the second insertion rod 46 are respectively inserted into the corresponding fixed seats 5, and a first ring plate 451 is provided on the outer periphery of the first insertion rod 45, and a first spring 61 is abutted between the first ring plate 451 and the corresponding fixed seat 5, and a second ring plate 461 is provided on the outer periphery of the second insertion rod 46, and a second spring 62 is abutted between the second ring plate 461 and the corresponding fixed seat 5. The connecting rod 44 includes a first rod body 441, a second rod body 442 and a sleeve 443, the first rod body 441 is hingedly matched with the second connecting rod 432, and the second rod body 442 is hingedly matched with the second insertion rod 46, the first rod body 441 slides in the sleeve 443, and the second rod body 442 is fixedly installed in the sleeve 443, a third ring plate 4411 is provided on the outer periphery of the first rod body 441, and a third spring 63 is abutted between the third ring plate 4411 and the sleeve 443.

[0049] When the slide rail 21 is adjusted to the desired position, the lever 41 is pressed down, thereby driving the first connecting rod 431 to swing around the axial direction of the connecting shaft 24, thereby synchronously driving the second connecting rod 432, the third connecting rod 433 and the connecting rod 44 to move, thereby driving the first plug rod 45 and the second plug rod 46 to move to the side away from each other, and then making the ends of the first plug rod 45 and the second plug rod 46 away from each other respectively abut and cooperate with the corresponding slide rail 21, thereby achieving the function of locking the slide rail 21, thereby achieving the function of fixed-length cutting.

[0050] The operating method of the present invention: When the workpiece to be processed needs to be positioned with the help of the first abutment surface 311, the backrest seat 32 is installed on the slide rail assembly 2 in the first direction, and the backrest body 31 is rotated to the first position, which is the first working state; When the workpiece to be processed needs to be positioned with the help of the second abutment surface 312, the backrest seat 32 is installed on the slide rail assembly 2 in the second direction, and the backrest body 31 is rotated to the second position, which is the third working state; When the workpiece to be processed needs to be positioned with the help of the third abutting surface 313 , the backrest seat 32 is installed to the slide rail assembly 2 in the first direction, and the backrest body 31 is rotated to the second position, which is the second working state.

[0051] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0052] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A table saw workbench with a multifunctional backrest, comprising a workbench body, the upper surface of the workbench body being a work surface, a slide rail assembly and a backrest assembly being provided on the workbench body, the backrest assembly being connected to the workbench body via the slide rail assembly, characterized in that: The backrest assembly includes a backrest body and backrest seats provided at both ends of the backrest body, the backrest seats being detachably fixedly connected to the slide rail assembly so that the backrest assembly can be mounted to the slide rail assembly in a first direction or in a second direction, wherein the first direction and the second direction are opposite to each other; The backrest body includes a first backrest plate and a second backrest plate, the first backrest plate and the second backrest plate cooperate to form an L-shape, the backrest body is movably connected to the backrest seat and forms a rotation fulcrum, and the backrest body can rotate relative to the backrest seat between a first position and a second position with the rotation fulcrum as the rotation center; The first backing plate has a first abutting surface, a second abutting surface and a contact surface, the first abutting surface is arranged opposite to the contact surface, and the second abutting surface is located between the first abutting surface and the contact surface, the second backing plate has a supporting surface and a third abutting surface, the supporting surface is adjacent to the first abutting surface, and the third abutting surface is arranged opposite to the supporting surface; When the backrest body is in the first position, the support surface is flush with the work surface; When the backrest body is located at the second position, the contact surface and the work surface are in a coplanar fit or a clearance fit.

2. The table saw workbench with a multifunctional backrest according to claim 1, characterized in that: A limiting mechanism for limiting the rotation angle of the backrest body is formed between the backrest seat and the backrest body. The limiting mechanism includes an arc track groove provided on the backrest seat and a slider provided on the backrest body. The slider is slidably connected to the arc track groove.

3. The table saw workbench with a multifunctional backrest according to claim 2, characterized in that: The limiting mechanism also includes an arc-shaped limiting groove arranged on the backrest seat and a positioning pin arranged on the backrest body. The arc-shaped limiting groove and the arc-shaped trajectory groove are arranged correspondingly. The positioning pin is slidingly connected to the arc-shaped limiting groove. Positioning grooves that cooperate with the positioning pin are formed at both ends of the arc-shaped limiting groove.

4. The table saw workbench with a multifunctional backrest according to claim 3, characterized in that: The positioning pin has a mating section, a clamping section and a connecting section. The mating section is slidably connected to the arc-shaped limiting groove. The connecting section is slidably fitted on the backrest body. The positioning groove is clamped and fitted with the clamping section. A reset spring is provided on the outer periphery of the positioning pin. The reset spring always has the tendency to push the clamping section to move closer to the arc-shaped limiting groove.

5. The table saw workbench with a multifunctional backrest according to claim 4, characterized in that: The arc-shaped limiting groove passes through the backrest seat, and the positioning pin also has an operating end. The operating end of the positioning pin passes through the arc-shaped limiting groove and extends out of the backrest seat.

6. The table saw workbench with a multifunctional backrest according to claim 1, characterized in that: The slide rail assembly includes two slide rails extending along the length direction of the workbench body, and the two slide rails are respectively slidably fitted on the two ends of the workbench body. The two backrests are respectively installed on the corresponding slide rails, and the backrests are provided with a locking mechanism for fixing the backrests to the slide rails.

7. The table saw workbench with a multifunctional backrest according to claim 6, characterized in that: The slide rails are each provided with a slide groove, and the locking mechanisms include bolts, nuts and washers. The nuts are slidably fitted in the slide grooves, and the washers are arranged on the outer periphery of the bolts. A connecting plate is provided on the backrest, and the washers are arranged between the connecting plate and the slide rails. The bolts are threadedly fitted with the nut.

8. The table saw workbench with a multifunctional backrest according to claim 7, characterized in that: The inner wall of the opening side of the slide is a contact wall, and the inner wall on the side opposite to the contact wall is an abutment wall. The locking mechanism also includes an integrally formed swing lever and an eccentric block. The swing lever is rotatably engaged with the backrest seat. The backrest seat is provided with a through groove connected to the slide. The eccentric block is movably arranged in the through groove. The eccentric block is in abutment with the abutment wall of the slide, and the eccentric block is rotated to adjust the engagement between the nut and the contact wall.

9. The table saw workbench with a multifunctional backrest according to claim 6, characterized in that: The workbench body is also provided with a locking assembly, which includes a shift rod, a rotating shaft, a connecting rod assembly, a first plug rod and a second plug rod. The rotating shaft is rotatably mounted on the workbench body, one end of the rotating shaft is fixedly fitted on the shift rod, and the other end of the rotating shaft is fixedly fitted with the connecting rod assembly. The first plug rod and the second plug rod are respectively mounted at both ends of the connecting rod assembly, and the first plug rod and the second plug rod are slidably mounted on the workbench body, and the ends of the first plug rod and the second plug rod are respectively abutted against corresponding slide rails.

10. A method for operating a table saw workbench with a multifunctional backrest according to any one of claims 1 to 9, characterized in that: When the workpiece to be processed needs to be positioned with the aid of the first abutment surface, the backrest is mounted on the slide rail assembly in the first direction, and the backrest body is rotated to the first position; When the workpiece to be processed needs to be positioned with the aid of the second abutment surface, the backrest is mounted on the slide rail assembly in the second direction, and the backrest body is rotated to the second position; When the workpiece to be processed needs to be positioned with the help of the third abutting surface, the backrest is installed to the slide rail assembly in the first direction, and the backrest body is rotated to the second position.

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