Electric tool support

Abstract

The utility model discloses an electric tool support. A base is included; the driving unit is mounted on the base; the lead screw is longitudinally and rotatably arranged on the base, the lead screw is in transmission connection with the driving unit through a transmission assembly, the lead screw is in threaded connection with a nut, and a connecting pin is assembled on the nut; the first hollow supporting column is longitudinally and fixedly arranged on the base, and an open groove matched with the connecting pin is longitudinally formed in the side wall of the first hollow supporting column; and the second hollow supporting column can be longitudinally and movably arranged on the first hollow supporting column in a sleeving mode, a through hole used for allowing the connecting pin to penetrate through is formed in the lower end of the second hollow supporting column, and when the driving unit drives the lead screw to rotate, the connecting pin synchronously acts along with the nut and drives the second hollow supporting column to ascend and descend. The device is more compact and simpler in structural design, lighter in overall weight and more convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of electric tool auxiliary tools, in particular to an electric tool bracket. Background Art

[0002] When using electric tools, they are usually operated by manual grip, which requires high arm strength and work experience of the user. Based on this, electric tool auxiliary brackets have appeared in the prior art. In view of the shortcomings of the electric tool auxiliary brackets in the prior art, the applicant filed Chinese patent application 2024207521795, but the bottom main part of the structure is relatively bulky and the design is not reasonable. Therefore, the applicant made further improvements. Utility Model Content

[0003] The utility model aims at the deficiencies in the prior art and provides an electric tool bracket, which is lighter as a whole and has a more reasonable structural design.

[0004] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0005] Power tool stand, including

[0006] Base;

[0007] A driving unit, which is mounted on the base;

[0008] A screw rod is longitudinally and rotatably arranged on the base, the screw rod is transmission-connected to the driving unit through a transmission assembly, a nut is threadedly connected to the screw rod, and a connecting pin is mounted on the nut;

[0009] A first hollow pillar is longitudinally fixed on the base, and a side wall is longitudinally provided with a slot that matches the connecting pin; and

[0010] The second hollow pillar is longitudinally movable and mounted on the first hollow pillar. A through hole for passing the connecting pin is provided at the lower end of the second hollow pillar. When the driving unit drives the screw rod to rotate, the connecting pin moves synchronously with the nut and drives the second hollow pillar to rise and fall.

[0011] In the above solution, preferably, the front end of the base is rotatably connected to one or more supporting feet, and the rear end is equipped with one or more rollers.

[0012] In the above solution, preferably, the base includes a built-in cavity, and the driving unit is arranged in the built-in cavity;

[0013] The driving unit is a motor or a hand crank.

[0014] In the above scheme, preferably, the transmission assembly includes a worm rotatably connected to the base and a worm wheel fixed to the lower end of the screw and drivingly matched with the worm, and the worm is drivingly connected to the drive unit.

[0015] In the above solution, preferably, the base includes a built-in cavity, and a hollow tube is fixed in the built-in cavity;

[0016] A first hole is formed on the side wall of the hollow tube, and one end of the worm is arranged at the first hole and is drivingly connected to the output shaft of the driving unit;

[0017] A second hole is opened on the top wall of the hollow tube, the lower end of the screw rod passes through the second hole and extends into the hollow tube, and the worm gear is arranged in the hollow tube.

[0018] In the above scheme, preferably, threaded holes are respectively opened on the left and right sides of the nut, and the connecting pin is transversely threadedly connected to each of the threaded holes;

[0019] The left and right side walls of the first hollow pillar are respectively provided with slots matched with the corresponding connecting pins.

[0020] In the above solution, preferably, the lower end of the first hollow support passes through the base shell wall and is fixedly installed on the hollow pipe.

[0021] In the above scheme, preferably, the lower end of the first hollow pillar is open so that it can be sleeved on the screw rod.

[0022] In the above scheme, preferably, the lower end of the second hollow pillar is open, and the shape and size of its inner cavity are adapted to the shape and size of the first hollow pillar.

[0023] In the above scheme, preferably, the connecting pin includes an outer end portion and an inner end portion with a thread, the outer diameter of the outer end portion is larger than the outer diameter of the inner end portion, and the aperture of the through hole is adapted to the inner end portion and smaller than the outer end portion.

[0024] The beneficial effects of the utility model are:

[0025] The utility model has a more compact and simple structure design, a lighter overall weight and is more convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the utility model.

[0027] Figure 2 It is a schematic diagram of the structure of each component on the base of the utility model.

[0028] Figure 3It is a schematic diagram of the matching state of the drive unit and the transmission assembly of the utility model.

[0029] Figure 4 It is a schematic diagram of the exploded state of the first hollow pillar and the second hollow pillar of the utility model.

[0030] Figure 5 This is a schematic diagram of the first hollow pillar of the utility model.

[0031] Figure 6 It is a schematic diagram of the exploded state of the driving unit, the first hollow pillar and the second hollow pillar of the utility model.

[0032] Figure 7 It is a schematic diagram of the hollow pipe fitting of the utility model. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods:

[0034] See also Figure 1-Figure 7 The electric tool bracket includes a base 1, a driving unit 2, a transmission assembly, a screw 3, a nut 4, a first hollow support 5, a second hollow support 6 and a connecting pin 9.

[0035] The base 1 is a component used for bottom support and installation of related components. Its specific shape can be various and can be selected according to actual needs. In this embodiment, it includes a bottom plate 11, and one or more supporting legs 12 are rotatably connected to the front end of the bottom plate 11. As one of the options, the left and right end corners of the front end of the bottom plate 11 are respectively rotatably connected to corresponding supporting legs 12. The supporting legs 12 have a first state of unfolding and a second state of folding. After unfolding, they can be used to support the device. For the shape of the supporting legs 12, please refer to Figure 2 As shown in , other shapes can also be selected as one of the structural forms of the support leg, which includes a support arm 121 rotatably connected to the base plate 11 and a ground contact component 122 fixed at the outer end of the support arm 121. The shape of the ground contact component 122 can be a column or other shapes, which is used to directly contact the ground. For the support arm 121, it can be a straight bar or have a slight downward curvature at the front end.

[0036] One or more rollers 13 are installed at the rear end of the base plate 11. As one of the options, in this embodiment, upright connecting plates 14 are respectively fixed at the left and right end corners of the rear end of the base plate 11. A wheel axle 15 is commonly provided through the two connecting plates 14. Corresponding rollers 13 are respectively fixed at both ends of the wheel axle 15. After the user lifts the front end of the device, the device can be easily pushed to move by relying on the roller structure.

[0037] like Figure 1As shown, the bottom plate 11 is fixed with an outer shell 16, the outer shell 16 is hollow to form an inner cavity 161, the front end of the inner cavity 161 is fixed with a hollow pipe 7, and the arrangement direction of the hollow pipe 7 can be selected to be horizontally arranged in the left and right direction of the bottom plate 11, such as Figure 2 shown.

[0038] The hollow tube 7 is hollow inside and can at least be used to accommodate the transmission assembly. In this embodiment, the transmission assembly includes a worm wheel 81 and a worm 82 that cooperate with each other in transmission. The arrangement direction of the worm 82 can be selected to be a transverse arrangement in the front-rear direction of the bottom plate 11, such as Figure 3 As shown, correspondingly, a first hole 71 is opened on the side wall of the hollow tube 7, one end of the worm 82 is arranged at the first hole 71, and the other end is rotatably connected to another corresponding side wall of the hollow tube 7.

[0039] like Figure 2 As shown, the drive unit 2 is arranged in the built-in cavity 161 and can be fixed on the bottom plate 11. Of course, the drive unit 2 can also be fixed on the hollow tube 7 or the outer shell 16. As one option, the arrangement direction of the drive unit 2 can be selected to be horizontally arranged in the front-to-back direction of the bottom plate 11, such as Figure 2 , Figure 3 As shown, it is consistent with the arrangement direction of the worm 82. At the same time, the output end of the driving unit 2 is transmission-connected with one end of the worm 82 arranged at the first hole 71, and can drive the worm 82 to rotate when the driving unit 2 is started.

[0040] The driving unit 2 may be a motor or a hand crank. When a motor is used, its arrangement and connection with the worm are as described above. When a hand crank is used (not shown in the figure), it is only necessary to open a hole on the base 1 to expose one end of the worm 82. The hole can be used for connecting the connecting end of the hand crank with the corresponding end of the worm 82. By shaking the hand crank, the worm 82 is driven to rotate, thereby achieving the corresponding effect of the motor, that is, it can drive the corresponding components to move up and down. The specific method of driving the corresponding components to move up and down is described below.

[0041] As for the worm wheel 81, in the present embodiment, it is fixed at the lower end of the screw rod 3 and arranged in the hollow tube 7, and the screw rod 3 is longitudinally rotatably arranged on the base 1. Specifically, a second hole 72 is opened on the top wall of the hollow tube 7, and the lower end of the screw rod 3 passes through the second hole 72 and extends into the hollow tube 7 (the screw rod 3 can synchronously pass through the outer shell 16). As one of the options, the lower end of the screw rod 3 can be rotatably connected to the bottom of the hollow tube 7 or the bottom plate 11, and bearings can be further arranged at the rotation connection between the screw rod 3 and the corresponding components to improve the rotation smoothness and service life. Of course, bearings can also be correspondingly arranged at the rotation connection at both ends of the worm 82.

[0042] Therefore, after the driving unit 2 is started, the screw rod 3 can be driven to rotate through the transmission of the worm 82 and the worm wheel 81 .

[0043] Furthermore, a nut 4 is threadedly connected to the screw rod 3, and the nut 4 moves up and down as the screw rod 3 rotates. For example, when the driving unit 2 drives the screw rod 3 to rotate forward, the nut 4 rises accordingly; when the driving unit 2 drives the screw rod 3 to rotate reversely, the nut 4 falls accordingly.

[0044] For the first hollow pillar 5, in this embodiment, its lower end is open, and the opening is connected to the hollow cavity inside it. Relying on its lower end opening, it is sleeved on the screw rod 3. Specifically, after it is installed, the screw rod 3 is located in the first hollow pillar 5, such as arranging the screw rod 3 at the middle position inside the first hollow pillar 5.

[0045] In this embodiment, as one of the options, the first hollow support 5 is arranged longitudinally, and its lower end passes through the top wall of the outer shell 16 and is fixed on the hollow pipe 7.

[0046] In this embodiment, a groove 51 is longitudinally opened on the side wall of the first hollow pillar 5. As one of the options, corresponding grooves 51 are respectively opened on the left and right side walls of the first hollow pillar 5. The two grooves 51 can be symmetrically arranged on the first hollow pillar 5. The grooves 51 connect the internal space of the first hollow pillar 5 and the air outside the first hollow pillar.

[0047] The slot 51 is used to cooperate with the connecting pin 9. For the connecting pin 9, in this embodiment, it is assembled on the nut 4. As one of the options, the left and right sides of the nut 4 are respectively provided with holes 41 that cooperate with the connecting pin 9. The connecting pin 9 is assembled at the hole 41. The hole 41 can specifically be a threaded hole. Correspondingly, the connecting pin 9 also uses a component with threads that cooperate with the threaded hole, such as a bolt.

[0048] The second hollow pillar 6 is longitudinally movable and mounted on the first hollow pillar 5. As one of the options, the lower end of the second hollow pillar 6 is open, and the opening is connected to its inner cavity, and the shape and size of its inner cavity are adapted to the shape and size of the outer contour of the first hollow pillar 5, so that the second hollow pillar 6 can move longitudinally on the first hollow pillar 5 smoothly, stably, and not prone to lateral shaking.

[0049] In this embodiment, a through hole 61 for inserting a connecting pin is opened at the lower end of the second hollow pillar 6. During the specific assembly, the connecting pin 9 passes through the through hole 61 and the slot 51 in sequence and is assembled at the hole 41 of the nut 4. The connecting pin 9 can move longitudinally along with the longitudinal movement of the nut 4. The second hollow pillar 6 relies on the cooperation between the connecting pin 9 and the wall of the through hole 61 so that it can also move longitudinally along with the longitudinal movement of the nut 4. In this way, after the driving unit 2 is started, the transmission of the worm 82 and the worm wheel 81 is relied on to cause the screw 3 to rotate, and the rotation of the screw 3 can drive the longitudinal movement of the nut 4, the connecting pin 9, and the second hollow pillar 6, thereby achieving the lifting and lowering purpose of the device.

[0050] As for the various components assembled on the second hollow pillar 6, specific reference may be made to the Chinese patent application document 2024207521795 proposed by the applicant. As one of the options, the various components assembled on the second hollow pillar may refer to the various components assembled on the second pillar in this document.

[0051] The connecting pin 9 can be specifically arranged horizontally. As one option, the connecting pin 9 includes an outer end portion 91 and an inner end portion 92 with a thread. The outer diameter of the outer end portion 91 is larger than the outer diameter of the inner end portion 92. The aperture of the through hole 61 is adapted to the inner end portion 92 and smaller than the outer end portion 91.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. Electric tool stand, characterized by: include Base; A driving unit, which is mounted on the base; A screw rod is longitudinally and rotatably arranged on the base, the screw rod is transmission-connected to the driving unit through a transmission assembly, a nut is threadedly connected to the screw rod, and a connecting pin is mounted on the nut; A first hollow support column is longitudinally fixed on the base, and a slot is longitudinally opened on the side wall to match the connecting pin; as well as The second hollow pillar is longitudinally movable and mounted on the first hollow pillar. A through hole for passing the connecting pin is provided at the lower end of the second hollow pillar. When the driving unit drives the screw rod to rotate, the connecting pin moves synchronously with the nut and drives the second hollow pillar to rise and fall.

2. The electric tool stand according to claim 1, characterized in that: The front end of the base is rotatably connected to one or more supporting legs, and the rear end is equipped with one or more rollers.

3. The electric tool stand according to claim 1 or 2, characterized in that: The base includes a built-in cavity, and the driving unit is arranged in the built-in cavity; The driving unit is a motor or a hand crank.

4. The electric tool stand according to claim 1, characterized in that: The transmission assembly includes a worm rotatably connected to the base and a worm wheel fixed to the lower end of the screw and drivingly matched with the worm. The worm is drivingly connected to the drive unit.

5. The electric tool stand according to claim 4, characterized in that: The base includes a built-in cavity, in which a hollow pipe is fixed; A first hole is formed on the side wall of the hollow tube, and one end of the worm is arranged at the first hole and is drivingly connected to the output shaft of the driving unit; A second hole is opened on the top wall of the hollow tube, the lower end of the screw rod passes through the second hole and extends into the hollow tube, and the worm gear is arranged in the hollow tube.

6. The electric tool stand according to claim 1, characterized in that: The left and right sides of the nut are respectively provided with threaded holes, and each of the threaded holes is respectively transversely threadedly connected with the connecting pin; The left and right side walls of the first hollow pillar are respectively provided with slots matched with the corresponding connecting pins.

7. The electric tool stand according to claim 5, characterized in that: The lower end of the first hollow support passes through the base shell wall and is fixedly installed on the hollow pipe.

8. The electric tool stand according to claim 1 or 5, characterized in that: The lower end of the first hollow support is open so that it can be sleeved on the screw rod.

9. The electric tool stand according to claim 1, characterized in that: The lower end of the second hollow support is open, and the shape and size of its inner cavity are matched with the shape and size of the first hollow support.

10. The electric tool stand according to claim 1 or 6, characterized in that: The connecting pin comprises an outer end portion and an inner end portion with a thread, the outer diameter of the outer end portion is larger than the outer diameter of the inner end portion, and the aperture of the through hole is adapted to the inner end portion and smaller than the outer end portion.

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