A multifunctional rest for a bench power tool

Abstract

The utility model discloses a kind of multifunctional backrest of bench electric tool, including backrest body, the backrest seat of being set in the both ends of backrest body, the backrest seat is connected to the workbench of electric tool by connecting piece, the backrest seat and connecting piece detachably fixed connection, the backrest body is "L" shape, the backrest body with the backrest seat swing joint and form rotating fulcrum, the backrest body with rotating fulcrum as rotation center can be rotated between first position and second position relative to the backrest seat, beneficial effect is as follows: backrest seat is switched by first installation state and second installation state, and backrest body can be switched around rotating fulcrum on backrest seat first position and second position, so that by rotating the position of backrest body has three working conditions, so as to satisfy different needs of user when cutting material, and structure positioning point is less, so that structure is more simple, part processing difficulty is lower, cost is lower.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, and in particular to a multi-functional backrest for a benchtop power tool. Background Technology

[0002] As a type of power tool, a table saw is a cutting tool with a worktable. Usually, a support is installed on the worktable of a table saw for materials to rest against.

[0003] According to the search, Chinese utility model patent (authorization announcement number: CN215618633U) provides a multifunctional support structure, including a main support, with support bases for installation connected to both ends of the main support, a connecting plate rotatably connected to the support base, the connecting plate having an L-shaped structure, an auxiliary support connecting between the two connecting plates, a positioning boss connected to the support base, and one end of the connecting plate rotatably connected to the positioning boss.

[0004] In order to enable the auxiliary support to rotate relative to the main support, the existing technology uses a connecting plate to rotate around the positioning boss on the support seat, so that the position of the auxiliary support can be adjusted according to the needs of use.

[0005] The connecting plate is further provided with stepped screws, the upper part of the backrest is provided with a first positioning groove corresponding to the stepped screws, the side of the backrest is also provided with a second positioning groove corresponding to the stepped screws, and the lower part of the second positioning groove is provided with a third positioning groove.

[0006] Therefore, when the auxiliary support changes position, it is necessary to use stepped screws in conjunction with different positioning slots to switch between different states.

[0007] Therefore, it can be seen that the support structure formed by the main support and auxiliary support in the existing technology is relatively complex in terms of structure, and the connecting plate needs to cooperate with different positioning slots through stepped screws to realize the switching of various states, resulting in a large number of positioning points in the overall structure, which leads to higher parts processing costs. Therefore, this shortcoming urgently needs to be improved. Utility Model Content

[0008] The purpose of this utility model is to address the above problems. This utility model provides a multi-functional backrest for benchtop power tools, which has the advantages of simple structure and low cost.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a multi-functional support for a benchtop power tool, comprising a support body and support seats disposed at both ends of the support body. The support seats are connected to the workbench of the power tool via connectors. The support seats and connectors are detachably fixedly connected. The support body is L-shaped. The support body and the support seats are movably connected and form a rotation fulcrum. The support body can rotate relative to the support seats between a first position and a second position with the rotation fulcrum as the rotation center. The support seats and the support body cooperate to form a limiting mechanism for limiting the rotation angle of the support body.

[0010] Preferably, the limiting mechanism includes an arc-shaped track groove disposed on the backrest and a slider disposed on the backrest body, wherein the slider is slidably connected to the arc-shaped track groove.

[0011] Preferably, the arc of the arc-shaped trajectory groove is 90°.

[0012] Preferably, the limiting mechanism further includes an arc-shaped limiting groove disposed on the backrest and a positioning pin disposed on the backrest body. The arc-shaped limiting groove is disposed in correspondence with the arc-shaped trajectory groove. The positioning pin is slidably connected to the arc-shaped limiting groove. Positioning grooves are formed at both ends of the arc-shaped limiting groove to cooperate with the positioning pin.

[0013] Preferably, the positioning pin has a mating section, a snap-fit ​​section, and a connecting section. The mating section is slidably connected to the arc-shaped limiting groove, the connecting section is slidably mated to the backing body, the positioning groove is snap-fitted to the snap-fit ​​section, and a spring is sleeved on the outer periphery of the positioning pin. The spring always has a tendency to push the snap-fit ​​section toward the arc-shaped limiting groove.

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

[0015] Preferably, the support body includes a first support plate and a second support plate, the first support plate and the second support plate cooperate to form an L-shaped support body, the first support plate and the second support plate are integrally connected or separately fixedly connected, the rotation fulcrum is located at or near the junction of the first support plate and the second support plate, and the limiting mechanism is disposed between the second support plate and the support base.

[0016] Preferably, the support base is provided with a stepped surface, and when the support body rotates to the first position, the lower surface of the first support plate rests on the stepped surface.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This utility model provides a multi-functional support for a benchtop power tool. The support base can be switched between a first installation state and a second installation state, and the support body can switch between a first position and a second position on the support base around a rotation fulcrum. This allows for three working states by rotating the position of the support body, thereby meeting the different needs of users when cutting materials. Furthermore, the structure has fewer positioning points, making it simpler and thus reducing the difficulty and cost of parts processing. Attached Figure Description

[0019] Figure 1 This is a first-view three-dimensional structural diagram of the first working state of this utility model;

[0020] Figure 2 This is a second-view three-dimensional structural diagram of the first working state of this utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the second working state of this utility model;

[0022] Figure 4 This is a three-dimensional structural diagram of the third working state of this utility model;

[0023] Figure 5 This is a top view of the structure of the present invention in its first working state;

[0024] Figure 6 This is a three-dimensional structural diagram of the backing body of this utility model;

[0025] Figure 7 This is a side view of the main body of the backing structure of this utility model;

[0026] Figure 8 This is a three-dimensional structural diagram of the swing rod of this utility model;

[0027] Figure 9 for Figure 5 A magnified structural diagram of B in the diagram;

[0028] Figure 10 This is a partial cross-sectional structural diagram of the locking mechanism of this utility model;

[0029] Figure 11 This is a partial three-dimensional structural diagram of the present invention;

[0030] Figure 12 This is a partial cross-sectional structural diagram of the present invention.

[0031] Figure Descriptions: 1. Worktable; 11. Machining Surface; 2. Slide Rail Assembly; 21. Slide Rail; 210. Slide Groove; 211. Rack; 22. Pointer; 23. Scale; 24. Connecting Shaft; 25. Gear; 26. Knob; 3. Backing Assembly; 301. Arc-shaped Limiting Groove; 302. Arc-shaped Track Groove; 31. Backing Body; 3101. First Backing Plate; 3102. Second Backing Plate; 311. First Abutment Surface; 312. Second Abutment Surface; 313. Third Abutment Surface; 3 14. Support surface; 315. Contact surface; 32. Backrest; 320. Step surface; 321. Support block; 322. Connecting platform; 33. Positioning pin; 3301. Operating end; 3302. Mating section; 3303. Snap-fit ​​section; 3304. Connecting section; 331. Rotating shaft; 332. Slider; 34. Swing rod; 341. Eccentric block; 342. Snap block; 35. Connecting plate; 361. Bolt; 362. Nut; 363. Washer; 37. Slot; 4. Spring. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] like Figures 1-12 As shown, a multi-functional support for a benchtop power tool includes a support body 31 and support seats 32 disposed at both ends of the support body 31. The support seats 32 are connected to the workbench 1 of the power tool via a connector. The upper surface of the workbench 1 is a machining surface 11. In this application, the connector is a slide rail assembly 2. The support seats 32 are detachably fixedly connected to the connector. The support body 31 is L-shaped. The support body 31 and the support seats 32 are movably connected and form a rotation fulcrum. The support body 31 can rotate relative to the support seats 32 between a first position and a second position with the rotation fulcrum as the rotation center. The support seats 32 and the support body 31 cooperate to form a limiting mechanism for limiting the rotation angle of the support body 31. It should be noted that the rotation fulcrum in this application is a rotating shaft 331.

[0034] The limiting mechanism includes an arc-shaped track groove 302 disposed on the backrest 32 and a slider 332 disposed on the backrest body 31, wherein the slider 332 is slidably connected to the arc-shaped track groove 302.

[0035] The arc of the arc-shaped track groove 302 is 90°, and the slider 332 moves between a first position and a second position within the arc-shaped track groove 302.

[0036] The limiting mechanism further includes an arc-shaped limiting groove 301 disposed on the backrest 32 and a positioning pin 33 disposed on the backrest body 31. The arc-shaped limiting groove 301 is correspondingly disposed with the arc-shaped track groove 302. The positioning pin 33 is slidably connected to the arc-shaped limiting groove 301. The two ends of the arc-shaped limiting groove 301 are formed with positioning grooves that cooperate with the positioning pin 33.

[0037] Furthermore, the arc-shaped limiting groove 301 and the arc-shaped trajectory groove 302 are concentrically arranged.

[0038] The positioning pin 33 has a mating section 3302, a snap-fit ​​section 3303, and a connecting section 3304. The mating section 3302 is slidably connected to the arc-shaped limiting groove 301. The connecting section 3304 is slidably fitted on the backing body 31. The positioning groove is snap-fitted to the snap-fit ​​section 3303. A spring 4 is sleeved on the outer periphery of the positioning pin 33. The spring 4 always has a tendency to push the snap-fit ​​section 3303 toward the arc-shaped limiting groove 301.

[0039] The diameter of the positioning groove is greater than the width of the arc-shaped limiting groove 301, the snap-fit ​​section 3303 is conical, the maximum diameter of the snap-fit ​​section 3303 is greater than the diameter of the positioning groove, and the diameter of the mating section 3302 is less than the width of the arc-shaped limiting groove 301.

[0040] The arc-shaped limiting groove 301 passes through the backrest 32, and the positioning pin 33 also 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.

[0041] When it is necessary to adjust the backrest body 31 to switch between the first and second positions, first press the operation end 3301 to disengage the locking section 3303 from the positioning groove. At this time, the backrest body 31 can be rotated so that the backrest body 31 can switch between the first and second positions.

[0042] Furthermore, when the backing body 31 is in the first or second position, the operating end 3301 is released. At this time, the spring 4 will push the locking section 3303 of the positioning pin 33 to cooperate with the corresponding positioning groove, thereby achieving the function of locking the backing body 31.

[0043] The backing body 31 includes a first backing plate 3101 and a second backing plate 3102. The first backing plate 3101 and the second backing plate 3102 cooperate to form an L-shaped backing body 31. The first backing plate 3101 and the second backing plate 3102 are integrally connected or separately fixedly connected. The rotation fulcrum is located at or near the junction of the first backing plate 3101 and the second backing plate 3102. In this application, the rotation fulcrum is located at one end of the first backing plate 3101 near the junction of the first backing plate 3101 and the second backing plate 3102. The limiting mechanism is disposed between the second backing plate 3102 and the backing seat 32.

[0044] When the backing body 31 is in the first position, the surface of the first backing plate 3101 near the workbench 1 is the first abutting surface 311, the surface of the first backing plate 3101 opposite to the first abutting surface 311 is the contact surface 315, the upper surface of the first backing plate 3101 is the second abutting surface 312, the upper surface of the second backing plate 3102 is the support surface 314, and the lower surface of the second backing plate 3102 is the third abutting surface 313.

[0045] In addition, the backrest 32 described in this application has a first mounting end and a second mounting end. When the backrest 32 is installed on the slide rail assembly 2 and the first mounting end is close to the worktable 1, it is in the first mounting state. When the backrest 32 is installed on the slide rail assembly 2 and the second mounting end is close to the worktable 1, it is in the second mounting state.

[0046] By switching the slider 332 between the first and second positions within the arc-shaped track groove 302, and by installing the support 32 onto the slide rail assembly 2 through the first and second installation states, the following three working states can be achieved:

[0047] In the first working state, long materials are cut: When the backing component 3 is in the first installation state and the slider 332 is in the first position, the first abutment surface 311 and the processing surface 11 cooperate to cut the material. The first abutment surface 311 and the processing surface 11 are perpendicular to each other, and the support surface 314 and the processing surface 11 are on the same plane. Therefore, the position of the backing body 31 is adjusted by moving the slide rail component 2, so that the support surface 314 can extend the processing surface 11, thereby cutting long materials.

[0048] In the second working state, thicker materials are cut: when the support component 3 is in the first installation state and the slider 332 is in the second position, the third abutment surface 313 cooperates with the processing surface 11 to cut the material. The third abutment surface 313 and the processing surface 11 are perpendicular to each other, and the contact surface 315 is slightly higher than the processing surface 11. At this time, the support body 31 can move to above the processing surface 11 of the worktable 1. The above situation is suitable for cutting thicker materials.

[0049] In the third working state, thinner materials are cut: when the backing component 3 is in the second installation state and the slider 332 is in the second position, the second abutment surface 312 cooperates with the processing surface 11 to cut the material. The second abutment surface 312 and the processing surface 11 are perpendicular to each other, and the contact surface 315 is slightly higher than the processing surface 11. At this time, the backing body 31 can move to above the processing surface 11 of the worktable 1. The above situation is suitable for cutting thinner materials.

[0050] Adjusting the position of the backrest body 31 and cooperating with the worktable 1 allows the power tool to have three working states, thereby meeting the different needs of users when cutting materials. Furthermore, the structure is simpler, the parts are easier to process, and therefore the cost is lower.

[0051] The support base 32 has a support block 321, and the support block 321 is provided with a stepped surface 320. When the support body 31 rotates to the first position, the lower surface of the first support plate 3101 rests on the stepped surface 320. The stepped surface 320 plays the role of supporting the support body 31, thereby improving the strength of the overall structure.

[0052] The slide rail assembly 2 includes two slide rails 21 extending along the length of the worktable 1. The two slide rails 21 are slidably engaged at both ends of the worktable 1. The two backrests 32 are respectively installed on the corresponding slide rails 21. The backrests 32 are provided with locking mechanisms for fixing the backrests 32 to the slide rails 21.

[0053] Each slide rail 21 is provided with a slide groove 210. Each locking mechanism includes a bolt 361, a nut 362, and a washer 363. The nut 362 is slidably fitted in the slide groove 210, and the washer 363 is disposed on the outer periphery of the bolt 361. The backrest 32 is provided with a connecting plate 35, and the washer 363 is disposed between the connecting plate 35 and the slide rail 21. The bolt 361 and the nut 362 are threadedly fitted, and the nut 362 is slidably fitted in the slide groove 210. Therefore, the nut 362 acts as a slider 332. By rotating the bolt 361, the function of locking the connecting plate 35 onto the slide rail 21 or loosening the connecting plate 35 can be achieved.

[0054] In a further optimized configuration, each of the backrests 32 is provided with a connecting platform 322. The opening 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. Each locking mechanism also includes a swing rod 34 and an eccentric block 341. The eccentric block 341 is integrally formed with the swing rod 34. The swing rod 34 is rotatably fitted onto the connecting platform 322. The backrest 32 is provided with a through groove that connects to the slide groove 210. The slide groove 210 has an abutment surface that abuts against the eccentric block 341. The eccentric block 341 is movably disposed in the through groove. The eccentric block 341 abuts against the abutment wall of the slide groove 210. The adjustment nut 362 is engaged with the contact wall by rotating the eccentric block 341 to achieve the engagement between the adjustment nut 362 and the contact wall.

[0055] The swing arm 34 is also provided with a locking block 342, and the connecting platform 322 is provided with a locking groove 37 that cooperates with the locking block 342. When the locking block 342 cooperates with the locking groove 37, it can lock the swing arm 34 and prevent the swing arm 34 from moving easily.

[0056] The swing rod 34 can swing around the connection between the swing rod 34 and the connecting platform 322 in the third and fourth positions. At this time, the bolt 361 and nut 362 are adjusted to allow the nut 362 to move within the slide groove 210. When the swing rod 34 is in the third position, it can fix the connecting plate 35.

[0057] When the swing rod 34 rotates from the third position to the fourth position, the swing rod 34 rotates towards the side closer to the slide rail 21 until the locking block 342 engages with the locking groove 37. At this time, the eccentric block 341 engages with the abutting wall, thereby causing the connecting plate 35 to move away from the slide rail 21, so that the connecting plate 35 engages 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 engages with the contact wall of the slide groove 210. Through surface contact, the friction between the nut 362 and the contact wall increases, so that the nut 362 and the slide rail 21 will not move relative to each other, thereby realizing the function of locking the backrest 32.

[0058] When the swing rod 34 rotates from the fourth position to the third position, the swing rod 34 rotates away from the slide rail 21. The locking block 342 disengages from the locking groove 37, and the eccentric block 341 disengages from the abutting surface. This causes the connecting plate 35 to disengage from the head of the bolt 361. As a result, the nut 362 disengages from the contact wall of the slide groove 210, allowing relative movement between the nut 362 and the slide rail 21. Therefore, the nut 362 can be moved within the slide groove 210 by pushing the backrest 32 or the backrest body 31.

[0059] The slide rail assembly 2 also includes a matching ruler 23 and pointer 22. The ruler 23 is mounted on the worktable 1 and the slide rail 21. Therefore, the position of the backing 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.

[0060] Each slide rail 21 is provided with a rack 211, and the worktable 1 is provided with a mounting base. A connecting shaft 24 is rotatably fitted on the mounting base, and each end of the connecting shaft 24 is provided with a gear 25 that meshes with the corresponding rack 211.

[0061] One end of the connecting shaft 24 is provided with a knob 26. By rotating the knob 26, the gear 25 is rotated, which in turn drives the rack 211 to move, which in turn drives the slide rail 21 to move, thereby playing the role of fine adjustment of the backing body 31.

[0062] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0063] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-functional support for a benchtop power tool, comprising a support body (31) and support bases (32) disposed at both ends of the support body (31), wherein the support bases (32) are connected to the workbench (1) of the power tool via connectors, characterized in that: The backrest (32) is detachably fixedly connected to the connector. The backrest body (31) is "L" shaped. The backrest body (31) is movably connected to the backrest (32) and forms a rotation fulcrum. The backrest body (31) can rotate relative to the backrest (32) between a first position and a second position with the rotation fulcrum as the rotation center. The backrest (32) and the backrest body (31) cooperate to form a limiting mechanism for limiting the rotation angle of the backrest body (31).

2. The multi-functional backrest for a benchtop power tool according to claim 1, characterized in that: The limiting mechanism includes an arc-shaped track groove (302) disposed on the backrest (32) and a slider (332) disposed on the backrest body (31), wherein the slider (332) is slidably connected to the arc-shaped track groove (302).

3. The multi-functional backrest for a benchtop power tool according to claim 2, characterized in that: The arc of the arc-shaped trajectory groove (302) is 90°.

4. The multi-functional backrest for a benchtop power tool according to claim 2, characterized in that: The limiting mechanism further includes an arc-shaped limiting groove (301) disposed on the backrest (32) and a positioning pin (33) disposed on the backrest body (31). The arc-shaped limiting groove (301) and the arc-shaped trajectory groove (302) are correspondingly disposed. The positioning pin (33) is slidably connected to the arc-shaped limiting groove (301). The two ends of the arc-shaped limiting groove (301) are formed with positioning grooves that cooperate with the positioning pin (33).

5. A multi-functional backrest for a benchtop power tool according to claim 4, characterized in that: The positioning pin (33) has a mating section (3302), a snap-fit ​​section (3303), and a connecting section (3304). The mating section (3302) is slidably connected to the arc-shaped limiting groove (301). The connecting section (3304) is slidably fitted on the backing body (31). The positioning groove is snap-fitted to the snap-fit ​​section (3303). A spring (4) is sleeved on the outer periphery of the positioning pin (33). The spring (4) always has the tendency to push the snap-fit ​​section (3303) to move closer to the arc-shaped limiting groove (301).

6. A multi-functional backrest for a benchtop power tool according to claim 5, characterized in that: The arc-shaped limiting groove (301) passes through the backrest (32), and the positioning pin (33) also 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).

7. A multi-functional backrest for a benchtop power tool according to any one of claims 1 to 6, characterized in that: The backing body (31) includes a first backing plate (3101) and a second backing plate (3102). The first backing plate (3101) and the second backing plate (3102) cooperate to form an L-shaped backing body (31). The first backing plate (3101) and the second backing plate (3102) are integrally connected or separately fixedly connected. The rotation fulcrum is located at or near the junction of the first backing plate (3101) and the second backing plate (3102). The limiting mechanism is disposed between the second backing plate (3102) and the backing seat (32).

8. A multi-functional backrest for a benchtop power tool according to claim 7, characterized in that: The backrest (32) is provided with a stepped surface (320). When the backrest body (31) rotates to the first position, the lower surface of the first backrest plate (3101) rests on the stepped surface (320).

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