A fastening device

Abstract

The application discloses a fastening device, which comprises a main body and a handle, the main body constitutes a main plane, and the handle is rotatably connected with the main body; the handle comprises a first arm and a second arm, the first arm is provided with a first connecting mechanism and a second connecting mechanism, the first arm is rotatably connected with the main body through the first connecting mechanism, and the second arm is rotatably connected with the first arm through the second connecting mechanism. The fastening device can be used for floor installation, the height of the handle can be changed, and the angle of the handle can be changed simultaneously. Meanwhile, the fastening device is additionally provided with a detachable auxiliary moving device, the base can be conveniently moved in use, and the auxiliary moving device can be removed when not needed, so that packaging and transportation are facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to power tools, and in particular to a fastening device with an adjustable handle. BACKGROUND

[0002] Wooden board installation is one of the most common processes in the construction and decoration process. Among them, the installation of floor is the most common. One common method of floor installation is to lay keel on the ground and reasonably lay standard size tongue-and-groove structure floor materials, and fix the floor on the keel with nails. Specifically, at the tongue part of the floor, the nails are inclined and connected with the keel. Repeat this process for each floor until all the floors are fixed.

[0003] During the construction process, the floor nail gun is a commonly used tool. The floor nail gun has the advantages of accuracy, labor saving, high efficiency, and not easy to damage the material. It can make the wooden board installation work efficiently.

[0004] However, the floor nail gun also has its limitations. Since the nails for fixing the floor need to be driven in one time, the strength and weight of the nail gun itself have certain requirements. If the strength or weight cannot meet the requirements, it will cause problems such as inability to drive in, rebound, damage, etc. Therefore, the main body of the commonly used nail gun is mainly made of cast iron material, which has a certain weight and is very heavy to move. Especially during use, the user needs to stand or crouch to work according to the actual situation, and the nail gun needs to be moved frequently. If the holding posture is not appropriate, it will cause fatigue of the hands, arms and back, making the user unable to work for a long time, reducing work efficiency, and even causing physical injury.

[0005] In the prior art, some technologies have appeared to improve the posture of the user holding the floor nail gun.

[0006] For example, some technical solutions use a handle that can be raised and lowered. When the user stands to work, the handle can be raised to prevent the user from bending over; when the user crouches, the handle can be lowered to avoid incorrect holding.

[0007] In some application scenarios, due to the height limitation of the site, the nail gun cannot enter the construction space completely. Therefore, some technical solutions add a rotating shaft to the handle, so that the handle can rotate away from the plane where the base is located, reducing the absolute height of the nail gun during construction.

[0008] Although the above prior art can improve the posture of the user holding the nail gun to some extent, there are still some unsolved technical problems. For example, in the prior art, although the height of the handle can be changed in some ways, the holding angle of the handle cannot be changed, and the user needs to hold the nail gun at the same angle in different postures, which still causes inconvenience and fatigue. In addition, the nail gun needs to be moved frequently, and the larger the construction area, the greater the frequency and range of movement. For the heavy main body, it is necessary to assist the movement device. If only the auxiliary movement device is considered, the volume and weight will be further increased, which is not conducive to transportation and packaging.

[0009] Therefore, the skilled in the art is committed to developing a fastening device to solve the technical problems existing in the prior art. This fastening device can be used for floor installation, not only the height of the handle can be changed, but also the angle of holding the handle can be changed at the same time. At the same time, the fastening device is also provided with a detachable auxiliary movement device, which can be conveniently moved in use, but the auxiliary movement device can be removed when not needed, which is convenient for packaging and transportation. SUMMARY

[0010] In view of the above defects of the prior art, the technical problem to be solved by the present application is how to provide a fastening device which can reduce the fatigue of the user, improve the work efficiency, and is convenient to move and transport.

[0011] To achieve the above-mentioned purpose, the present application provides a fastening device, comprising a main body and a holding part, the holding part is connected with the main body.

[0012] Further, the holding part comprises a first arm, the first arm is provided with a first connecting mechanism, and the first arm is rotatably connected with the main body through the first connecting mechanism.

[0013] Further, the first connecting mechanism comprises a first shaft, the first arm is configured to be able to rotate around the first shaft, and the first connecting mechanism is provided with a first locking and unlocking mechanism, so that the first arm has at least two locking positions which can be stationary relative to the main body without external force.

[0014] Further, the holding part further comprises a second arm, the first arm is further provided with a second connecting mechanism, the second arm is rotatably connected with the first arm through the second connecting mechanism, and the second connecting mechanism is provided with a second locking and unlocking mechanism, so that the second arm has at least two locking positions which can be stationary relative to the main body without external force.

[0015] Further, the second connecting mechanism comprises a protruding rib provided on the second arm, the protruding rib being provided with a first through hole; a second through hole provided on the first arm; the first through hole and the second through hole being coaxially arranged to allow a long strip-shaped object to pass through so as to connect the first arm and the second arm.

[0016] Further, the second locking and unlocking mechanism further comprises a pin, a clamping shaft and an operating part, the clamping shaft being fixedly connected with the operating part through the pin; the pin and the clamping shaft both penetrating through the first through hole and the second through hole, the pin, the clamping shaft and the operating part being coaxially arranged with the second shaft; the operating part being configured to drive the clamping shaft to axially move under the action of an external force.

[0017] Further, a gear ring is fixedly arranged inside the first through hole, and a rotating shaft tooth is fixedly arranged on the outer surface of the clamping shaft, the clamping shaft being configured to realize the engagement and disengagement between the rotating shaft tooth and the gear ring under the driving of the operating part.

[0018] Further, a gear ring is arranged inside the first through hole, and a rotating shaft tooth is fixedly arranged on the outer surface of the clamping shaft, the gear ring and the rotating shaft tooth being engaged and configured to realize the locking and unlocking between the gear ring and the protruding rib under the control of the operating part.

[0019] Further, a gear ring is fixedly arranged inside the first through hole, and a rotating shaft tooth is arranged inside the second through hole, the gear ring and the rotating shaft tooth being engaged and configured to realize the locking and unlocking between the rotating shaft tooth and the first arm under the control of the operating part.

[0020] Further, a clamping groove is arranged inside the first through hole, and two one-way bearings are arranged outside the clamping shaft, the size and shape of the inner contour of the clamping groove being matched with the outer contour of each of the two one-way bearings; the rotating directions of the two one-way bearings being opposite; the clamping shaft being configured to realize the locking and disengagement between the two one-way bearings and the clamping groove under the driving of the operating part.

[0021] Further, the holding part further comprises a third arm connected with the main body.

[0022] Further, a base is further included, the base further comprising an adjustable plate and a height adjusting part, the height of the adjustable plate being changed through the height adjusting part.

[0023] Further, the height adjusting part comprises a stud, the stud being fixedly connected with the adjustable plate, and the adjustable plate being connected with the main body through the stud.

[0024] Further, an annular rotating wheel is arranged on the main body, and the screw thread on the inner surface of the annular rotating wheel is engaged with the screw thread on the outer surface of the stud.

[0025] Further, the height adjusting part comprises an adjusting convex shaft, and the upper surface of the adjustable plate is in contact with the convex shaft.

[0026] Further, the height adjusting part comprises two convex shafts, a driving wheel is arranged on the main body, a driven wheel is arranged on each of the two convex shafts, the driven wheels are connected to the driving wheel, and the driven wheels are configured to drive the two convex shafts to rotate at the same angular velocity.

[0027] Further, a base is further included, and the base comprises a base main body and a moving mechanism, and the moving mechanism is detachably connected to the base main body.

[0028] Further, the moving mechanism comprises a roller support, and the roller support is detachably connected to the base main body.

[0029] Further, a sliding groove is arranged on the side surface of the base main body, and the roller support is connected to the base main body through the sliding groove.

[0030] Further, a support ball is arranged on the roller support, a ball clamping groove is arranged at a corresponding position on the sliding groove, and the support ball is matched with the ball clamping groove to realize the locking of the roller support.

[0031] Compared with the prior art, the present application has at least the following technical effects:

[0032] 1. The total height of the device can be adjusted under the adjustment of the two connecting mechanisms, so as to adapt to the height of different users or the construction posture of standing or squatting, and to alleviate the fatigue of the user due to the inappropriate height or standing posture, and to facilitate packaging and transportation.

[0033] 2. The angle of the second arm can be adjusted to adapt to the hand holding angle of the user, and to alleviate the fatigue of the user due to the inappropriate holding posture.

[0034] 3. In one embodiment of the present application, the holding part can be rotated to different planes, so that the present application is suitable for some occasions where the construction space is limited.

[0035] 4. In one embodiment of the present application, an adjustable pad plate is designed to reduce the damage of the present application to the wood board.

[0036] 5. In one embodiment of the present application, an auxiliary moving mechanism is designed to facilitate the movement of the whole device and to alleviate the fatigue of the user due to frequent and long distance movement.

[0037] 6. Because the invention is foldable, its overall volume is very small during transportation, which can reduce packaging and transportation costs; because it is applicable to various working environments and reduces user fatigue, it can improve work efficiency and reduce average construction costs.

[0038] 7. The following will further explain the concept, specific structure and technical effects of the present invention in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of the present invention. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the overall structure of one state of an embodiment of the present invention;

[0040] Figure 2 This is a schematic diagram of the rotation of the second handle according to an embodiment of the present invention;

[0041] Figure 3 This is a schematic diagram of the overall structure of another state of one embodiment of the present invention;

[0042] Figure 4 This is an exploded view of the second connecting mechanism according to an embodiment of the present invention;

[0043] Figure 5 This is a schematic diagram of the second connecting mechanism button release according to an embodiment of the present invention;

[0044] Figure 6 This is a schematic diagram of the second connecting mechanism button being pressed according to an embodiment of the present invention;

[0045] Figure 7 This is an exploded view of the second connecting mechanism according to an embodiment of the present invention;

[0046] Figure 8 This is a schematic diagram of a one-way bearing structure used in one embodiment of the present invention;

[0047] Figure 9 This is a schematic diagram of the second connecting mechanism structure according to an embodiment of the present invention;

[0048] Figure 10 This is an exploded view of the second connecting mechanism according to an embodiment of the present invention;

[0049] Figure 11 This is a schematic diagram of the second connecting mechanism structure according to an embodiment of the present invention;

[0050] Figure 12 This is a schematic diagram of the second connecting mechanism structure according to an embodiment of the present invention;

[0051] Figure 13Fig. 1 is a schematic diagram of a knob structure employed in one embodiment of the present application;

[0052] Figure 14 Fig. 2 is a schematic diagram of a grip structure of one embodiment of the present application;

[0053] Figure 15 Fig. 3 is a schematic diagram of a grip structure of one embodiment of the present application;

[0054] Figure 16 Fig. 4 is a schematic diagram of a second connecting mechanism structure of one embodiment of the present application;

[0055] Figure 17 Fig. 5 is a schematic diagram of a second connecting mechanism structure of one embodiment of the present application;

[0056] Figure 18 Fig. 6 is a schematic diagram of a second connecting mechanism structure of one embodiment of the present application;

[0057] Figure 19 Fig. 7 is a schematic diagram of the overall structure of one state of one embodiment of the present application;

[0058] Figure 20 Fig. 8 is a schematic diagram of the overall structure of another state of one embodiment of the present application;

[0059] Figure 21 Fig. 9 is a schematic diagram of a base and moving mechanism structure of one embodiment of the present application;

[0060] Figure 22 Fig. 10 is a schematic diagram of a base and moving mechanism exploded structure of one embodiment of the present application;

[0061] Figure 23 Fig. 11 is a schematic diagram of a base and moving mechanism cross-sectional position marking of one embodiment of the present application;

[0062] Figure 24 Fig. 12 is a cross-sectional diagram of a base and moving mechanism of one embodiment of the present application;

[0063] Figure 25 Fig. 13 is a cross-sectional diagram of a base and moving mechanism of one embodiment of the present application;

[0064] Figure 26 Fig. 14 is a cross-sectional diagram of a base and moving mechanism of one embodiment of the present application;

[0065] Figure 27 Fig. 15 is a cross-sectional diagram of an adjustable plate of one embodiment of the present application;

[0066] Figure 28 Fig. 16 is a schematic diagram of an adjustable plate structure of one embodiment of the present application;

[0067] Figure 29is a structural schematic diagram of an adjustable plate of an embodiment of the present application;

[0068] Wherein, 1-base, 11-base body, 111-limiting plate, 112-rotating wheel, 113-clamp spring, 114-rotating wheel bolt, 12-adjustable plate, 121-adjustable plate stud, 122-pad plate, 123-pad plate screw, 124-height adjustment part, 1241-driving wheel, 1242-linkage, 1243-driven wheel, 1244-driving gear, 1245-driven gear, 125-height adjustment convex shaft, 13-roller support, 14-roller, 15-slotted guide, 16-support ball, 17-support ball clamping groove, 2-fastener container, 3-driving mechanism, 4-grip, 41-first connecting mechanism, 42-first handle, 421-groove, 43-second connecting mechanism, 431-button, 432-spring, 433-pin, 434-clamping shaft, 435-rotary shaft tooth, 436-bearing matching part, 437-one-way bearing, 438-knob, 4381-ball groove, 439-ball, 4310-ball spring, 4311-eccentric cam, 4312-plate rod, 4313-convex shaft, 4314-tooth fastener, 44-second handle, 441-gear ring, 442-convex rib, 443-clamping groove, 5-third handle. DETAILED DESCRIPTION

[0069] The technical content of the present application will be more clearly and conveniently understood by introducing a plurality of preferred embodiments of the present application with reference to the accompanying drawings of the specification. The present application can be embodied in many different forms, and the scope of protection of the present application is not limited to the embodiments mentioned herein.

[0070] In the drawings, components of the same structure are denoted by the same reference numerals, and components having similar structures or functions are denoted by similar reference numerals. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present application is not limited to the size and thickness of each component. In order to make the drawing clearer, the thickness of the components is appropriately exaggerated in some places in the drawing.

[0071] Embodiment 1:

[0072] As Figures 1-3The diagram shows the overall structure of an embodiment of the present invention. This embodiment includes a base 1, a fastener container 2, a drive mechanism 3, and a gripping part 4. When this embodiment is used for floor installation, the fastener container 2 is a magazine for holding floor nails, and the drive mechanism 3 can be gas-driven or electrically driven. The fastener container 2 is detachably fixedly connected to the base 1, preferably by a snap-fit ​​connection. The drive mechanism 3 is fixedly connected to the base 1. The gripping part 4 includes a first handle 42 and a second handle 44. The first handle 42 is connected to the drive mechanism 3 via a first connecting mechanism 41; in other embodiments, the first handle 42 can also be directly connected to the base 1. The second handle 44 is connected to the first handle 42 via a second connecting mechanism 43. In this embodiment, both the fastener container 2 and the drive mechanism 3 are elongated. The straight line a containing the fastener container 2 intersects with the straight line b containing the drive mechanism 3, forming a main plane. The lower surface of the base 1 that contacts the wooden board is the operating surface. The main plane is set perpendicular to the operating surface.

[0073] The preferred connection between the first connecting mechanism 41 and the second connecting mechanism 43 is a hinge, i.e., a first shaft is provided at the first connecting mechanism 41 and a second shaft is provided at the second connecting mechanism 43; such that the first handle 42 rotates relative to the drive mechanism 3 around the first shaft, and the second handle 44 rotates relative to the first handle 42 around the second shaft. This embodiment and the following other embodiments will specifically describe the arrangement of the second connecting mechanism 43 and the second shaft. The first connecting mechanism 41 and the first shaft can adopt any of the following arrangement methods to achieve the same technical effect.

[0074] The orientation of the second axis determines the rotational position of the second handle 44. If the second axis is perpendicular to the main plane, the second handle 44 rotates within the main plane around the second axis. If the second axis is parallel to the main plane, or most specifically, if the second axis is both within and parallel to the main plane, the second handle 44 may rotate within the main plane or at an angle to it. Regardless of the orientation of the second axis, the second connecting mechanism 43 provides at least two locking positions, fixing the second handle 44 relative to the first handle 42. An operating part is also provided for locking and unlocking the second handle 44.

[0075] like Figure 1 and Figure 3 As shown, by adjusting the first connecting mechanism 41 and the second connecting mechanism 43, and by adjusting the different postures of the first handle 42 and the second handle 44, the total height of the device can be adjusted from... Figure 1 H1 in the middle becomes Figure 3 In the context of H2, where H1 and H2 are different, for ease of description, we assume H1 is greater than H2. Therefore, when the user is tall, or standing, the setting with the higher total height can be selected.Figure 1 when the user is short in height, or when the user is in a squatting position, a lower overall height can be used, i.e. Figure 3 to reduce the fatigue of the user due to the height or the inappropriate standing posture. In addition, the reduction of the overall height is also beneficial to the packaging and transportation.

[0076] Due to the presence of the second connecting mechanism 43, the second handle 44 can be adjusted to various angles. When the device is in different relative positions of the user, the angle of the second handle 44 can be adjusted to meet the different holding postures of the user, so as to reduce the fatigue of the user due to the inappropriate holding posture and increase the work efficiency.

[0077] Embodiment 2:

[0078] As shown in Figures 4-6 is the specific structure of the second connecting mechanism 43 in an embodiment of the present application. It includes a groove 421 arranged on the first handle 42 and a protruding rib 442 arranged on the second handle 44. The size of the groove 421 is matched with the size of the protruding rib 442, and through holes are arranged at the corresponding positions of the groove 421 and the protruding rib 442. The through holes can be used for a long strip-shaped object to pass through, thereby connecting the first handle 42 and the second handle 44. It should be noted that, in Figures 4-6 , since the groove 421 is a U-shaped groove with two walls, three through holes are needed to be arranged. In other embodiments, a single-wall groove can also be used, and only a corresponding number of through holes are needed to ensure the connection of the first handle 42 and the second handle 44. In addition, in the present embodiment, the three through holes are coaxially arranged. In other embodiments, the through holes can also be arranged without strict coaxiality, as long as they can be used for a long strip-shaped object to pass through to achieve the rotational connection of the first handle 42 and the second handle 44. In the present embodiment, a tooth is arranged on the inner side of the through hole arranged on the protruding rib 442, so that the through hole becomes a gear ring 441. In order to provide a clamping position, the present embodiment is provided with a button 431, a spring 432, a pin 433 and a clamping shaft 434. The clamping shaft 434 is fixedly connected with the button 431 through the pin 433. The pin 433 and the clamping shaft 434 are coaxially arranged to form a second shaft. The clamping shaft 434 is in a cylindrical shape, and a rotating shaft tooth 435 is arranged on the part away from the button 431. When the clamping shaft 434 is in a suitable position, the rotating shaft tooth 435 is engaged with the gear ring 441 to form the locking of the first handle 42 and the second handle 44. When the clamping shaft 434 is in another suitable position, the rotating shaft tooth 435 is separated from the gear ring 441 to achieve the unlocking.

[0079] As shown in Figure 5The image shows the locked state of this embodiment. A spring 432 is positioned between the button 431 and the gear ring 441, causing the spring force of the spring 432 to drive the button 431 away from the gear ring 441, while simultaneously causing the locking shaft 434 to move axially along the second axis. This positions the rotating shaft tooth 435 in engagement with the gear ring 441.

[0080] like Figure 6 The image shows the unlocked state in this embodiment. An external force is applied to button 431, causing button 431 to move closer to gear ring 441, while simultaneously moving the locking shaft 433 axially along the second axis. This causes the rotating shaft tooth 435 to be in a position separated from gear ring 441. At this time, the second handle 44 can rotate freely, thus unlocking the device.

[0081] Since spring 432 is compressed in the unlocked state, it returns to its original state when the external force is removed, restoring this embodiment to its original condition. Figure 5 The locked state.

[0082] Example 3:

[0083] like Figure 7 As shown, in this embodiment, a slot 443 is provided inside the through hole in the rib 442. The depth of the slot 443 can accommodate two one-way bearings 437 (e.g., Figure 8 The thickness is shown. The inner contour dimension of the slot 433 matches the outer contour dimension of the one-way bearing 437. The pin 433, the retaining shaft 434, and the one-way bearing 437 are coaxially arranged to form a second shaft. Two one-way bearings 437 are sleeved on the bearing mating part 436 of the retaining shaft 434. The two one-way bearings 437 rotate in opposite directions. When no external force is applied to the button 431, the two one-way bearings 437 are in the slot 433, the second arm 44 is in the locked state, and the spring 432 is compressed. When an external force is applied to the button 431, not both one-way bearings 437 are in the slot 433, so that the second handle 44 can be rotated in one or both directions and is in the unlocked state. When the external force is removed, it returns to the locked state. Compared with embodiment 2, the advantage of this embodiment is that it can achieve stepless adjustment, and the second handle 44 can be adjusted to any angle without being limited by the inter-tooth fit.

[0084] Example 4:

[0085] like Figure 9 , Figure 10As shown in the figure. In this embodiment, no special treatment is made to the inner side of the through hole of the convex rib 442, but at least two convex shaft holes are arranged around the through hole. At the same time, at least one convex shaft 4313 is arranged on the clamping shaft 434. When no external force is applied to the button 431, the convex shaft 4313 is inserted into the convex shaft hole due to the action of the spring 432, realizing the locking of the second handle 44. When external force is applied to the button 431, the spring 432 is compressed, and at the same time the clamping shaft 434 moves axially, and at the same time the convex shaft 4313 leaves the convex shaft hole, realizing the unlocking. When the external force is removed, it returns to the locked state. The advantage of this embodiment is that no treatment is needed to the inner side of the through hole of the convex rib 442, reducing the manufacturing difficulty and production cost.

[0086] Embodiment 5:

[0087] As Figure 11 shown in the figure, in this embodiment, instead of using the button 431 and the spring 432 to realize the locking and unlocking, the knob 438 fixedly connected with the pin 433 is used to realize the locking and unlocking. When the knob 438 is screwed, the second handle 44 is relatively fixed with the first handle 42, and is in the locked state. When the knob 438 is unscrewed, the second handle 44 can rotate relative to the first handle 42 around the second shaft, and is in the unlocked state.

[0088] Embodiment 6:

[0089] As Figures 12-13 shown in the figure, on the basis of using the knob 438, the convex rib 442 is provided with a ball accommodating groove for accommodating the ball 439 and the ball spring 4310. The side surface of the knob 438 close to the convex rib 442 is provided with a ball groove 4381, the size of which is matched with the size of the ball 439. In the process of screwing the knob 438, the ball groove 4381 contacts with the ball 439, and emits a sound as a kind of screwing prompt. To confirm that the knob 438 is in the screwed position.

[0090] Embodiment 7:

[0091] As Figures 14-16 shown in the figure, in this embodiment, the eccentric cam 4311 and the plate rod 4312 are used to drive the pin 433 to rotate along the second shaft, so as to realize the locking and unlocking states.

[0092] Embodiment 8:

[0093] As Figure 17As shown, in this embodiment, the locking method of meshing the gear ring 441 with the rotating shaft tooth 435 is the same as in Embodiment 1. Unlike Embodiment 1, the position of the rotating shaft tooth 435 does not change, therefore the gear ring 441 and the rotating shaft tooth 435 will not separate. A space is provided on the first handle 42 to accommodate the toothed fastener 4314. The toothed fastener 4314 can be a screw. When locking is required, the toothed fastener 4314 is tightened, fixing the rotating shaft tooth 435 relative to the first handle 42. Since the rotating shaft tooth 435 meshes with the gear ring 441, and the gear ring 441 is fixedly connected to the second handle 44, the second handle 44 is fixed relative to the first handle 42, thus being in a locked state. When the toothed fastener 4314 is released, the rotating shaft tooth 435 can rotate relative to the first handle 42, therefore the second handle 44 can also rotate relative to the first handle 42, thus being in an unlocked state.

[0094] Example 9:

[0095] As shown in Figure 18, this embodiment is similar to Embodiment 8, except that the rotating shaft tooth 435 is fixedly connected to the first handle 42, while the toothed ring 441 and the protruding rib 442 are movable relative to each other. A toothed fastener 4314 is disposed on the second handle 44. When locking is required, the toothed fastener 4314 is tightened, fixing the toothed ring 441 relative to the second handle 44. Since the toothed ring 441 meshes with the rotating shaft tooth 435, and the rotating shaft tooth 435 is fixedly connected to the first handle 42, the second handle 44 is fixed relative to the first handle 42, thus being in a locked state. When the toothed fastener 4314 is released, the toothed ring 441 can rotate relative to the second handle 44, therefore the second handle 44 can also rotate relative to the first handle 42, being in an unlocked state.

[0096] Example 10:

[0097] like Figure 19 , Figure 20 As shown, this embodiment also includes a third handle 5. The third handle 5 is fixedly connected to the drive mechanism 3, either fixedly to the drive mechanism 3 or detachably connected. The first axis of the first connecting mechanism 41 is parallel to the main plane, so that when the first handle 42 rotates around the first axis, it can have a certain angle with the main plane. This embodiment is suitable for scenarios with insufficient construction space. The first handle 42 can drive the second handle 44 to be bent to a certain angle. Preferably, the first handle 42 can be at a 90-degree angle with the main plane to minimize the overall height of the device. At this time, the user can carry out construction by holding the third handle 5.

[0098] Example 11:

[0099] like Figure 21As shown, in the present embodiment, the base 1 specifically comprises a base body 11, an adjustable plate 12. Among them, the adjustable plate 12 is provided with a pad plate 122. The pad plate 122 is in contact with the plate material, reducing the damage to the plate material. The pad plate 122 is usually made of plastic material, and is fixedly connected with the adjustable plate 12 through the pad plate screw 123. In order to ensure that the adjustable plate 12 can provide stable connection, the adjustable plate 12 is usually a metal die casting. The adjustable plate 12 is provided with an adjustable plate stud 121, and the corresponding position of the base body 11 is provided with a rotating wheel 112. The inner thread of the rotating wheel 112 is matched with the outer thread of the adjustable plate stud 121. By rotating the rotating wheel 112, the adjustable plate stud 121 is driven, so that the height of the adjustable plate 12 can be adjusted. The rotating wheel 112 is fixed on the base body 11 through the limiting plate 111, the snap spring 113 and the rotating wheel bolt 114.

[0100] The base body 11 of the present embodiment is also provided with a moving mechanism for assisting movement. Specifically, it comprises a roller bracket 13 and a roller 14, which is rotatably fixedly arranged on the roller bracket 13. In order to facilitate the packaging and transportation of the device, the moving mechanism needs to be detachable. Therefore, the base body 11 of the present embodiment is also provided with a sliding groove 15 at the connection position of the moving mechanism. The roller bracket 13 is detachably connected with the base body 11 through the sliding groove 15. The roller bracket 13 is provided with a bracket ball 16, and the corresponding position on the sliding groove 15 is provided with a bracket ball clamping groove 17. In order to realize the limiting locking of the roller bracket 13 on the sliding groove 15.

[0101] Figures 23-26 The structure of the adjustable plate 12 and the moving mechanism is described in more detail. Among them, Figure 24 、 Figure 25 、 Figure 26 are respectively Figure 23 the sectional structure of B, C, D in

[0102] Embodiment 12:

[0103] As shown in Figure 27 , in the present embodiment, two height adjusting convex shafts 125 are arranged in parallel inside the base. Through four columns and springs, the upper surface of the adjustable plate 12 is attached to the outer surface of the height adjusting convex shaft 125. The height adjusting convex shaft 125 is a cylindrical shape with different radii. Since the upper surface of the adjustable plate 12 is attached to the surface of the height adjusting convex shaft 125, when the height adjusting convex shaft 125 is rotated to different angles, the height of the base bottom also changes. As shown in 7, the height adjusting convex shaft 125 used in the present embodiment has four curved surfaces, so that the base bottom has four different heights. As shown in Figure 7As shown in a, b, c, and d, the height-adjusting cam 125 rotates to four different positions, giving the base a corresponding height. In other embodiments, the height-adjusting cam 125 can be configured with different numbers of curved surfaces as needed to achieve the desired height adjustment effect at the base bottom.

[0104] Example 13:

[0105] like Figure 28 As shown, in this embodiment, the ends of the two height-adjusting cams 125 disposed inside the base are respectively provided with driven wheels 1243. The driven wheels 1243 are fixedly disposed with the height-adjusting cams 125. When the driven wheels 1243 are driven by an external force, they can drive the height-adjusting cams 125 to rotate. In this embodiment, one of the two driven wheels 1243 is connected to the drive wheel 1241 through a connecting rod 1242, and the other of the two driven wheels 1243 is connected to the height-adjusting part 124 through a connecting rod 1242. The height-adjusting part 124 is a knob. The height-adjusting part 124 and the drive wheel 1241 are the same size and are respectively fixed to both ends of a wheel axle. When the user operates the height-adjusting part 124, that is, rotates the knob, the height-adjusting part 124 and the drive wheel 1241 rotate at the same angular velocity. Driven by the connecting rod 1242, the driven wheel 1243 connected to the height adjustment unit 124 and the driven wheel 1241 connected to the drive wheel 1241 rotate in the same direction and at the same angular velocity. This drives the rotation of the height adjustment cam 125 to achieve height adjustment of the bottom of the base.

[0106] Example 14:

[0107] like Figure 29 As shown, this embodiment illustrates a structure for connecting and driving the height-adjusting cams 125 that differs from that of Embodiment 13. In this embodiment, one end of each of the two height-adjusting cams 125 is equipped with a driven gear 1245. Both driven gears 1245, being of the same size and having the same number of teeth, mesh with the drive gear 1244. The height-adjusting part 124 and the drive gear 1244 are respectively fixed to both ends of a wheel axle. The height-adjusting part 124 is a knob. When the user operates the height-adjusting part 124, i.e., rotates the knob, the drive gear 1244 is driven to rotate, and the two driven gears 1245 rotate at the same angular velocity in opposite directions under the drive of the drive gear 1244. In this embodiment, the cross-sections of the two height-adjusting cams 125 are symmetrically arranged, thus ensuring that the curved surface in contact with the upper surface of the base bottom is the same during reverse rotation.

[0108] The preferred embodiments of the present application have been described above in detail. It should be understood that modifications and variations to the preferred embodiments could be made by those skilled in the art without departing from the spirit and scope of the application. Accordingly, it is intended that there be included within the scope of the application, all such modifications and variations as would be apparent to those skilled in the art upon reading this disclosure. It is intended to obtain for the inventors such patent rights as are available for any patent granted on the present application.

Claims

1. A fastening device, comprising a main body, a fastener container and a handle, wherein the handle is connected with the main body; wherein the handle comprises a first arm, a first connecting mechanism is arranged on the first arm, the first arm is rotatably connected with the main body through the first connecting mechanism; wherein the first connecting mechanism comprises a first shaft, the first arm is configured to be able to rotate around the first shaft, a first locking and unlocking mechanism is arranged on the first connecting mechanism, so that the first arm has at least two locking positions which can be stationary relative to the main body without external force; the handle comprises a second arm, a second connecting mechanism is arranged on the first arm, a second shaft is arranged at the second connecting mechanism, the second arm is rotatably connected with the first arm through the second connecting mechanism, the second arm rotates around the second shaft relative to the first arm; the second connecting mechanism is provided with a second locking and unlocking mechanism, so that the second arm has at least two locking positions which can be stationary relative to the main body without external force; wherein the second connecting mechanism comprises: a protruding rib arranged on the second arm, a first through hole is arranged on the protruding rib; a second through hole is arranged on the first arm; the first through hole and the second through hole are arranged in coincidence; wherein the second locking and unlocking mechanism further comprises a pin, a clamping shaft, a spring and an operating part, the clamping shaft is fixedly connected with the operating part through the pin; the pin and the clamping shaft both pass through the first through hole and the second through hole, the pin, the clamping shaft and the operating part are coaxially arranged with the second shaft; the operating part is configured to axially move the clamping shaft under the action of external force; wherein the inside of the first through hole in the protruding rib is arranged as a clamping groove, the depth of the clamping groove can accommodate the thickness of two one-way bearings, the size of the inner contour of the clamping groove and the size of the outer contour of the one-way bearing fit; the pin, the clamping shaft and the one-way bearing are coaxially arranged; the two one-way bearings are sleeved on the bearing matching part of the clamping shaft; the rotation directions of the two one-way bearings are opposite; the one-way bearing is configured to: when no external force is applied on the operating part, the two one-way bearings are in the clamping groove, the second arm is in the locked state, and the spring is compressed, and when external force is applied on the operating part, not both of the two one-way bearings are in the clamping groove, so that the second arm can rotate in one direction or two directions to be in the unlocked state, to realize stepless adjustment.

2. The fastening device of claim 1, wherein the handle comprises a third arm, the third arm is connected with the main body.

3. The fastening device of claim 1, wherein It also comprises a base, the base comprises an adjustable plate and a height adjusting part, the height of the adjustable plate is changed through the height adjusting part.

4. The fastening device of claim 3, wherein the height adjusting part comprises a stud, the stud is fixedly connected with the adjustable plate, the adjustable plate is connected with the main body through the stud.

5. The fastening device of claim 4, wherein an annular rotating wheel is arranged on the main body, the threads on the inner surface of the annular rotating wheel engage with the threads on the outer surface of the stud.

6. The fastening device of claim 3, wherein The height adjusting part comprises two height adjusting convex shafts arranged in parallel, the upper surface of the adjustable plate is attached to the outer surface of the height adjusting convex shafts, the height adjusting convex shafts are in the shape of cylinders with different radii, and the height of the bottom of the base changes when the height adjusting convex shafts rotate to different angles.

7. The fastening device of claim 6, wherein A driving wheel is arranged on the main body, a driven wheel is arranged on the end of each height adjusting convex shaft, the driven wheel is connected to the driving wheel, and the driven wheel is configured to drive the two height adjusting convex shafts to rotate at the same angular velocity.

8. The fastening device of claim 1, wherein The base further comprises a base body and a moving mechanism, and the moving mechanism is detachably connected to the base body.

9. The fastening device of claim 8, wherein The moving mechanism comprises a roller support, and the roller support is detachably connected to the base body.

10. The fastening device of claim 9, wherein A sliding groove is arranged on the side surface of the base body, and the roller support is connected to the base body through the sliding groove.

11. The fastening device of claim 10, wherein A support ball is arranged on the roller support, a ball clamping groove is arranged at the corresponding position on the sliding groove, and the support ball cooperates with the ball clamping groove to realize the locking of the roller support.

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