An energy storage and control mechanism for an electric nail gun

Abstract

An energy storage and control mechanism for an electric nail gun, comprising a motor, a worm associated with the output shaft of the motor, left and right worm wheels meshing with the worm, left and right pulleys, and a wire rope wheel; both ends of a load-bearing belt are mounted on the left and right pulleys, and the middle part of the load-bearing belt passes through the head of a firing pin that penetrates the middle area of an energy storage spring cover after contacting and turning around pulleys arranged on both sides of the energy storage spring cover. An energy storage spring is sleeved inside the energy storage spring cover, and the other end of the energy storage spring abuts against an energy storage spring base; the wire rope wheel is driven by a driving mechanism, a wire rope is fixed on the wire rope wheel, and the outer end of the wire rope is fixed on the firing pin; a locking mechanism is arranged inside the energy storage spring base, and an unlocking block and a locking lever handle that form the locking mechanism are in contact and match with each other. The present invention is driven by the rotation of the wire rope wheel to wind up the wire rope, greatly reducing the internal space of the gun body, and a spring with a higher elastic force can be installed, achieving large energy storage in a small space, and then converting it into the maximum striking force. In addition, it is light in weight and small in size, making it more convenient to carry.

Description

Technical Field

[0001] The present invention relates to an energy storage and control mechanism, and more particularly to an energy storage and control mechanism for an electric nail gun. Background Art

[0002] Electric nail guns are relatively convenient to use and easy to carry. However, in terms of usage effect, pneumatic nail guns drive nails more neatly and powerfully, while electric nail guns are prone to jamming and misfiring.

[0003] In response to the above problems, currently, Hilti Group in Germany has an electric nail gun with a built-in energy storage mechanism. This energy storage mechanism is as shown in Figure 1 in Figure 1 Figure a. The gun includes an energy storage spring cover A1 and an energy storage spring cover base A2. An energy storage spring A3 is placed inside both the energy storage spring cover A1 and the energy storage spring cover base A2. Belt pulley sets A4 are provided on both sides of the energy storage spring cover A1 and the energy storage spring cover base A2.

[0004] A screw A5 is driven by a motor A6 at the head of the gun body. An energy storage pull block A7 is sleeved on the screw A5. Slide rails A8 are respectively fixed on both sides of the energy storage pull block A7. Rail grooves are provided on the slide rails A8. Protrusions A10 are provided on both sides of a firing pin A9, and the protrusions A10 are stuck in the rail grooves. As the energy storage pull block A7 moves backward, the slide rails A8 can pull the firing pin A9 backward. When the end of the firing pin A9 reaches the position of the trigger handle, it is stuck.

[0005] A steel rope A11 is sleeved on the firing pin A9. The steel rope A11 extends through the pulley sets A4 on both sides of the energy storage spring cover A1 to the pulley sets A4 on both sides of the energy storage spring cover base A2 and then returns to the energy storage pull block A7 on the screw A5.

[0006] Therefore, during energy storage, continue to refer to Figure 1 Figure b. Since the end of the firing pin A9 is stuck when it reaches the position of the trigger handle, the energy storage pull block A7 moves forward, pulling the steel rope A11 to force the energy storage spring A3 to compress and accumulate potential energy. Then, when the trigger handle is opened, the potential energy P of the energy storage spring A3 is converted into the kinetic energy of the firing pin A9 when the energy storage spring A3 rebounds.

[0007] When this electric nail gun strikes a nail, the energy storage spring drives the energy storage spring cover to push the steel rope when the firing pin is released. Since the pulley set is fixed on the energy storage spring cover and forms a pulley block with the steel rope, when the pulley set on the side of the energy storage spring cover moves forward a certain distance, the steel rope needs to move forward two times the distance. That is to say, when the energy storage spring cover is completely compressed, it requires twice the compression length of the corresponding steel rope, which means the screw needs to be of a longer length. This also results in a longer head of the gun body, and the energy storage is limited by the displacement of the energy storage pull block, resulting in limited energy storage.

[0008] In addition, energy storage is required before striking, that is, the energy storage pulling block needs to move to pull the steel rope, and the screw is relatively long, which results in a relatively long interval between the second strikes. Summary of the Invention

[0009] The purpose of the present invention is to solve the technical problems of limited energy storage and long striking intervals caused by the imperfect internal structure of the existing electric nail gun body, and to provide an energy storage and control mechanism for an electric nail gun with large energy storage, which can be further enhanced as the parts are strengthened and has a short striking interval.

[0010] The technical solution to be solved by the present invention mainly includes a motor, a worm associated with the output shaft of the motor, left and right worm wheels respectively meshed on both sides of the worm, left and right belt wheels correspondingly installed on the left and right worm wheels, and a steel rope wheel arranged above the left and right belt wheels;

[0011] Both ends of a load-bearing belt are fixedly installed on the left and right belt wheels. The middle part of the load-bearing belt passes through the head of the firing pin that penetrates the middle area of the energy storage spring cover after contacting and turning around the belt wheels arranged on both sides of an energy storage spring cover. An energy storage spring is sleeved in the energy storage spring cover, and the other end of the energy storage spring abuts against an energy storage spring base;

[0012] The steel rope wheel is driven by a driving mechanism. A steel rope is fixed on the steel rope wheel, and the outer end of the steel rope is fixed on the firing pin; a locking mechanism that matches the head of the firing pin and is used to fix the firing pin head after it enters is arranged in the energy storage spring base. An unlocking block that forms the locking mechanism is in contact and matching with a locking lever handle.

[0013] Preferably, the driving mechanism of the steel rope wheel is composed of a driving bevel gear arranged on the left belt wheel or the right belt wheel, and a driven bevel gear arranged on the steel rope wheel to match the driving bevel gear. A clutch mechanism is also arranged on the steel rope wheel, which can disengage the driven bevel gear from the driving bevel gear.

[0014] Preferably, the clutch mechanism includes a rotating magnet, an eccentric shaft installed on the rotating magnet, and a shift fork penetrated by the eccentric shaft. The end of the shift fork is stuck in a clutch sleeve, and the clutch sleeve is fixed on the steel rope wheel.

[0015] Preferably, the locking mechanism includes a sliding sleeve seat fixed in the energy storage spring base. A locking sleeve is sleeved outside the sliding sleeve seat. A bead hole for placing steel beads is arranged on the outer edge of the mouth of the sliding sleeve seat. Unlocking grooves corresponding to the steel beads are arranged on the inner side of the locking sleeve. One end of a locking spring is fixed on the locking sleeve so that the unlocking grooves arranged on the locking sleeve correspond to the bead holes; a locking arc concave surface is also arranged on the head of the firing pin corresponding to the steel beads.

[0016] Preferably, a guiding wing is arranged on the outside of the energy storage spring cover, and the guiding wing is stuck in a guiding frame provided with a guiding groove; one end of the guiding frame is provided with a buffer pad, and the other end is fixed on the energy storage spring base.

[0017] Preferably, the motor is arranged below the left and right worm wheels, drives a driven wheel through an output shaft, and the worm is installed on the axis of the driven wheel.

[0018] Preferably, it further includes a control circuit, the input end of which is a position sensor and is arranged on the side of the energy storage spring cover.

[0019] The beneficial effects of the present invention are as follows:

[0020] The firing pin of the present invention is mainly driven by the rotation and winding of a steel wire rope by a steel wire rope wheel, which greatly reduces the internal space of the gun body of the steel nail gun. Moreover, a spring with a higher elastic force can be installed to achieve large energy storage in a small space, and then maximize the striking force. In addition, it is light in weight and small in size, making it more convenient to carry. Compared with the existing gas nail gun, the cost is low. Through the use of other structures such as the worm and worm wheel combination, the safety is also greatly improved. It can be used in explosion-proof work sites and is more environmentally friendly during use. Description of the Drawings

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0022] Figure 1 is a schematic structural diagram of the energy storage mechanism of the existing electric steel nail gun;

[0023] Figure 2 is a schematic diagram of the appearance and sectional structure of the tail section of the present invention;

[0024] Figure 3 is a schematic diagram of the partial combination structure of the present invention;

[0025] Figure 4 is Figure 2 a schematic diagram of the structure from another angle after removing some parts;

[0026] Figure 5 is a schematic sectional structure diagram after the assembly of the present invention;

[0027] Figure 6 is Figure 5 a schematic sectional diagram of the partial structure;

[0028] Figure 7 is Figure 5 a schematic cross-sectional diagram of the partial structure;

[0029] Figure 8 is a schematic diagram of the locking mechanism of the present invention;

[0030] Figure 9 It is a schematic structural diagram of another embodiment of the present invention;

[0031] Figure 10 is Figure 9 a schematic structural diagram of the clutch structure in another embodiment;

[0032] Figure 11 is the schematic structural diagram of the energy storage structure of the present invention. Specific Embodiments

[0033] Hereinafter, embodiments of the technical solution of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, that is, a large number of specific details are given to provide a more thorough understanding of the present invention. However, for those skilled in the art, the present invention can be implemented without one or more of these details. In these examples, in order to avoid confusion with the present invention, some technical features well known to the public are not described.

[0034] It should be understood that the present invention can be implemented in different forms and should not be construed as limited to the embodiments presented herein. Therefore, it is only used as an example and cannot be used to limit the protection scope of the present invention.

[0035] In addition, it should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meaning understood by those skilled in the art to which the present invention belongs.

[0036] Refer to Figures 1 to 11 , an energy storage and control mechanism for an electric nail gun. The energy storage and control mechanism is arranged in the gun housing of the electric nail gun. In the gun housing, there is provided a reduction motor or a low-speed motor 1, a worm 2 associated with the motor output shaft, left and right worm wheels 3 and 4 respectively meshing with both sides of the worm 2, left and right belt wheels 5 and 6 correspondingly mounted on the left and right worm wheels 3 and 4, and a wire rope wheel 7 arranged above the left and right belt wheels 5 and 6.

[0037] Both ends of a load-bearing belt 8 are fixedly installed on the left and right belt wheels 5 and 6. The middle part of the load-bearing belt 8 contacts and turns through belt wheels 10 arranged on both sides of an energy storage spring cover 9 and then passes through the head of a firing pin 16 that penetrates the middle area of the energy storage spring cover 9. An energy storage spring 11 is sleeved in the energy storage spring cover 9, and the other end of the energy storage spring 11 abuts against an energy storage spring base 12.

[0038] The wire rope wheel 7 is driven by a driving mechanism. A wire rope 15 is fixed on the wire rope wheel 7, and the outer end of the wire rope 15 is fixed on the firing pin 16; a locking mechanism that matches the head of the firing pin 16 and is used to fix the firing pin 16 after it enters is arranged in the energy storage spring base 12. An unlocking block 21 that forms the locking mechanism contacts and matches a locking lever 20.

[0039] The locking trigger handle 20 is formed by connecting two identical-shaped plates through a pin column disposed between the plates. A trigger handle torsion spring 202 is sleeved on the first locking column 201, and both ends of the trigger handle torsion spring 202 abut against the energy storage spring base 12. The second pin column 203 corresponds to the unlocking block 21 of the locking mechanism below. A space 204 formed by a separated plate body is left between the second locking column 203 and the first locking column 201, and this space 204 is used to accommodate the unlocking block 21 to enter.

[0040] During the implementation of the present invention, a guiding slider 161 is provided on the side of the firing pin 16, and a firing pin guiding groove bracket 162 is provided on the side of the firing pin 16 corresponding to the guiding slider 161. The firing pin guiding groove bracket 162 is parallel to the moving direction of the firing pin.

[0041] During the implementation of the present invention, the description is made after the firing pin has driven a nail.

[0042] First, the steel wire wheel 7 is driven by a driving mechanism to pull the firing pin 16 to the initial position. At the initial position, the firing pin 16 is locked by the locking mechanism, and then the driving mechanism releases the control.

[0043] The motor 1 directly or indirectly drives the worm 2. The worm 2 cooperates with the left and right worm wheels 3 and 4 for transmission, driving the left and right belt pulleys 5 and 6 to rotate inwards, and then rolling up the two ends of the load-bearing belt 8 towards the inside. Since the middle part of the load-bearing belt is connected to the firing pin 16 through the belt pulleys 10 provided on both sides outside the energy storage spring cover 9. Therefore, when the firing pin 16 is in the locked state, during the process of rolling up the two ends of the load-bearing belt, the energy storage spring cover 9 is simultaneously compressed, that is, the energy storage spring 11 inside the energy storage spring cover 9 is compressed. Then the motor stops rotating, and the spring potential energy formed by the compressed spring is maintained at the required position by using the self-locking characteristic of the worm and worm wheel composed of the worm 2 and the left and right worm wheels 3 and 4 and the deceleration motor or the low-speed motor itself.

[0044] When a nail needs to be driven, by pulling the trigger, the trigger pushes the lower part of the locking trigger handle 20 to cause it to rotate around the hinge of the first pin column 201. The height of the second pin column 202 decreases on the horizontal plane, and the unlocking block 21 disengages from the locking trigger handle 20, resulting in the unlocking of the locking mechanism to release the firing pin 16. At this time, the potential energy of the energy storage spring 11 is quickly converted into the kinetic energy of the firing pin 16, and the firing pin 16 slides out at high speed along the firing pin hole on the nail head, driving the nail out. Then, when driving again, repeat the above actions.

[0045] The nail can be driven into wood, concrete or iron plate to complete the fastening operation.

[0046] The electric nail gun adopting this energy storage and control mechanism is applicable to the installation of door and window frames, water pipe clamps, wire clamps, and the occasion of a small amount of nail use by DIY users.

[0047] Driven by the above-mentioned motor 1, the wire rope wheel 7 is driven by a driving mechanism, and their respective time limits can be controlled by various circuits or by buttons. The number of turns of the motor rotation can correspond to the pulling distance of the firing pin, the number of turns of the load-bearing belt winding, etc. In this embodiment, the control of the circuit is not the technical problem to be solved in this embodiment. Those skilled in the art should understand that the circuit cannot store energy and control the release of the stored energy. In the above structure, the technical solution given can already complete energy storage and control.

[0048] Further, as an improvement of the present invention, continue to refer to Figure 4 、 Figure 10 The driving mechanism of the wire rope wheel 7 is composed of a driving bevel gear 61 provided on the left pulley 5 or the right pulley 6, and a driven bevel gear 71 provided on the wire rope wheel 7 to match the driving bevel gear 61.

[0049] In the present invention, the driving bevel gear 61 is selected to be provided on the right pulley 6. The driving bevel gear 61 is sleeved on the right pulley shaft. A bearing is installed on the right pulley shaft above the driving bevel gear 61, or a stopper extends from the bracket or the inner shell of the gun body and presses above the right pulley 6 shaft; the driven bevel gear 71 is sleeved on the wire rope wheel 7 shaft and is provided on one end face of the wire rope wheel 7, and a bearing is sleeved on its shaft, and the bearing is also stuck on the bracket or the inner shell of the gun body.

[0050] During implementation, the right pulley 6 drives the wire rope wheel 7 through the driving bevel gear 61. By setting the same number of teeth or a certain multiple of the number of teeth, the motor 1 can directly or indirectly drive the worm 2 to rotate forward, so that when the left and right pulleys 5 and 6 rotate, the wire rope wheel 7 rotates counterclockwise. In this way, while the left and right pulleys 5 and 6 release the load-bearing belt 8, the wire rope wheel 7 winds up the wire rope 15 and pulls the firing pin 16 to the locking position of the locking mechanism.

[0051] Further, as an improvement of the present invention, continue to refer to Figure 2 、 Figures 4 to 6 A wire rope storage chamber 72 is provided at the bottom of the wire rope wheel 7 for placing the wire rope 15 when the wire rope wheel 7 reversely releases the wire rope 15 and isolating the contact between the wire rope 15 at the bottom of the wire rope wheel 7 and the periphery of the wire rope storage chamber 72.

[0052] During implementation, when the firing pin 16 is pulled up, then the motor 1 directly or indirectly drives the worm 2 to rotate reversely, so that the left and right pulleys 5 and 6 wind up the load-bearing belt 8 inward, prompting the load-bearing belt 8 to act on the energy storage spring cover 9 along the pulley 10, so that the energy storage spring 9 presses the internal energy storage spring 11 to compress. At the same time, the driven bevel gear 71 of the wire rope wheel 7 driven by the driving bevel gear 61 makes the wire rope wheel 7 rotate clockwise to release the wire rope 15, and the wire rope 15 retreats into the wire rope storage chamber 72 and is in a loose state.

[0053] When the locking mechanism is opened, the firing pin 16 can be ejected by the energy storage spring against the load-bearing belt 8, and the steel cable 15 is pulled out of the steel cable chamber 72 along with the firing pin 16. After that, the motor 1 rotates repeatedly to pull up the firing pin.

[0054] Further, as an improvement to the present invention, continue to refer to Figure 9 、 Figure 10 On the steel cable wheel 7, a clutch mechanism L is further provided, which can disengage the driven bevel gear 61 from the driving bevel gear 71. The clutch mechanism L includes a rotating magnet L1, an eccentric shaft L2 installed on the rotating magnet L1, and a fork L3 penetrated by the eccentric shaft L2. The end of the fork L3 is clamped in a clutch sleeve L4, and the clutch sleeve L4 is fixed on the steel cable wheel 7.

[0055] In the present invention, the clutch sleeve L4 has a circular cross-section, and a ring groove is provided on its circular edge. The end of the fork L3 is clamped in the ring groove, so that when the clutch sleeve L4 rotates with the steel cable wheel 7, it will not affect the clamping of the end of the fork L3.

[0056] During implementation, the rotating magnet L1 is energized, causing the eccentric shaft L2 to rotate. The eccentric shaft L3 drives the fork L3 to finally move backward. When moving, it pulls the clutch sleeve L4 to move outward, thereby disengaging the driven bevel gear 71 sleeved on the wheel shaft at the other end face of the steel cable wheel 7 from the driving bevel gear 61.

[0057] After disengagement, when the locking mechanism is opened, the firing pin 16 can be ejected by the energy storage spring against the load-bearing belt 8, and the steel cable 15 is pulled out along with the firing pin 16.

[0058] Further, as an improvement to the present invention, continue to refer to Figure 7 , Figure 8 The locking mechanism includes a sliding sleeve seat 13 fixed in the energy storage spring base 12. A locking sleeve 14 is sleeved outside the sliding sleeve seat 13. A bead hole 124 is provided on the outer edge of the mouth of the sliding sleeve seat 13 for placing steel balls 17. A unlocking groove 126 is provided on the inner side of the locking sleeve 14 corresponding to the steel balls. One end of a locking spring 123 is fixed on the locking sleeve 14 so that the unlocking groove 126 provided on the locking sleeve 14 corresponds to the bead hole 124; a locking arc concave surface is further provided on the head of the firing pin 16 corresponding to the steel balls 17. The locking arc concave surface can be arranged around the head of the firing pin 16, and the locking arc concave surface corresponding to the steel balls 17 is set as an arc surface recessed inward.

[0059] In the present invention, a load-bearing plate 121 is fixed behind the energy storage spring base 12. The load-bearing plate 121 can be formed by combining other brackets to form a frame for placing various components and fixing them inside the gun inner shell. The front end inside the sliding sleeve base 13 is a chamber 127, and the rear side wall is provided with internal threads. A fixing screw 122 with a middle cavity passes through from the other end face of the load-bearing plate 121 and is screwed into the internal threads of the sliding sleeve base 13 to achieve the assembly of the sliding sleeve base 13 on the load-bearing plate 121. The middle cavity of the fixing screw 122 allows the steel rope 15 to pass through.

[0060] One end of the locking spring 123 is fixed on the locking sleeve 14, so that the unlocking groove 126 provided on the locking sleeve 14 is misaligned with the steel ball 17 (if necessary in the setting, it can also directly abut against the stepped surface extending from the side of the sliding sleeve base 13). The misalignment presses the steel ball 17 more towards the chamber 127 of the sliding sleeve base 13. When the bead hole 124 is set, the edge of the hole on the outer side of the sliding sleeve base 13 is large, and the edge of the hole on the inner side is small. Moreover, the outer side of the bead hole 124 is sleeved by the locking sleeve 14. Therefore, except for part of the protruding surface of the steel ball 125 entering the chamber 127 of the sliding sleeve base 13, the rest can only be in the bead hole 124 and abut against the inner surface of the locking sleeve 14.

[0061] During implementation, when the head of the firing pin 16 is pulled into the chamber 127 of the sliding sleeve base 13 by the steel rope 15, due to the action of the locking spring 123, the unlocking groove 126 corresponds to the bead hole 124. The end of the locking arc concave surface of the firing pin 16 slides over the surface of part of the steel ball 17 inside the sliding sleeve base 13. The steel ball 17 is pushed into the unlocking groove 126, and the locking arc concave surface enters the chamber 127 of the sliding sleeve base 1 without any hindrance.

[0062] As it further enters, the part of the shoulder of the firing pin 16 that is larger than the inner cavity diameter of the sliding sleeve base 13 abuts against the locking sleeve 14 and forces the locking sleeve 14 to compress towards the locking spring 123. At this time, the unlocking groove 126 inside the locking sleeve 14 is displaced, making the gap between the outer side of the sliding sleeve base 13 and the inner side wall of the locking sleeve 14 smaller, that is, the moving space outside the steel ball 17 becomes smaller, causing the steel ball 17 to displace towards the chamber 127. As the concave surface space for the steel ball 17 to move on the locking arc concave surface of the firing pin 16 becomes larger, the steel ball 17 completely reaches the limit of entering the lower edge of the bead hole 124. After the steel rope 15 stops pulling, the driving mechanism of the steel rope wheel 7 releases the control. The locking spring 123 rebounds and pushes the firing pin 16 towards the outside of the sliding sleeve base 13 through the locking sleeve 14. The concave surface space of the locking arc concave surface of the firing pin 16 becomes smaller, forcing the steel balls 125 to roll towards the outside respectively in the bead hole 124. However, due to the limited gap between the outside and the inner surface of the locking sleeve 14, the steel balls 125, through the combined action of the bead hole 124 and the end of the locking arc concave surface, force the head of the firing pin 16 to be locked by the locking arc concave surface inside the chamber 127 of the sliding sleeve base 13, thus completing the locking of the firing pin 16.

[0063] Further, as an improvement to the present invention, continue to refer toFigure 11 On the outside of the energy storage spring cover 9, there are guide wings 91, and the guide wings 91 are stuck on a guide frame 93 provided with guide grooves 92; one end of the guide frame 93 is provided with a buffer pad 94, and the other end is fixed on the energy storage spring base 12.

[0064] In the present invention, the setting of the guide frame 93 can limit the movement of the energy storage spring cover 9 in the horizontal direction, eliminate the influence of the installation of the energy storage spring 11 on the position placement of the energy storage spring cover 9, and the influence of uneven resilience of the energy storage spring cover 9, such as the inclination of the energy storage spring cover 9 and the like.

[0065] Continue to refer to Figure 2 Furthermore, as an improvement to the present invention, the motor 1 is arranged below the left worm gear 3 and the right worm gear, and drives a passive wheel 102 through an output shaft 101, and the worm 2 is installed on the axis of the passive wheel 102.

[0066] In the present invention, the motor 1 is a reduction motor or a low-speed motor, and the setting of the motor 1 can further shorten the length of the gun body and make the volume of the gun body smaller.

[0067] Furthermore, as an improvement to the present invention, it further includes a control circuit, and the input end of the control circuit is a position sensor and is arranged on the side of the energy storage spring cover.

[0068] In addition, during implementation, in order to increase the self-checking function of the gun body during use, it can also be controlled by a circuit, and a position sensor is correspondingly arranged at the position 99 of the gun body shell cover above the energy storage spring cover 9 to detect the position of the energy storage spring cover 9, because the energy storage spring cover 9 will displace both during energy storage and firing of the firing pin.

[0069] Then, the working principle and specific action sequence of the circuit control implementation are as follows:

[0070] 1. Initial state: The product is not powered on, and each moving part is in a free position.

[0071] 2. First power-on: Insert the battery pack into the battery installation slot C at the tail of the gun body, turn on the gun body switch, the product is powered on, and the circuit control program starts scanning to check the positions of each moving part, mainly by the sensor sensing the position of the energy storage spring cover, and making corresponding action steps:

[0072] The first step: The control program checks the position where the striker 16 is located. If it does not stay at the set position, the control program first energizes the rotary magnet L1. The eccentric shaft L2 installed on the rotary magnet L1 drives the fork L3 to combine the clutch sleeve L4 with the wire rope wheel 7. At this time, the driven bevel gear 71 meshes with the driving bevel gear 61. Secondly, the motor 1 is started to reverse, which drives the wire rope wheel 7 to rotate counterclockwise. The striker is pulled to the set initial position through the wire rope 15. The locking arc concave surface at the head of the striker 16 enters the chamber 127 of the sliding sleeve seat 13 through the steel ball 125. Subsequently, the shoulder of the striker pushes up the locking sleeve 14. The unlocking block 21 at the lower end of the outer side of the locking sleeve 14 abuts against the second pin 203, and under the action of the trigger torsion spring 202, the locking trigger 20 rotates downward with the first pin 201 as the hinge point, so that the unlocking block 21 slides into the space 204. At the same time, at this time, the striker 16 is locked in the sliding sleeve seat 13 by the steel ball 125 on the sliding sleeve seat 13 acting on the head of the striker 16;

[0073] The second step: After the control program checks that the striker is in the set position, it energizes the rotary electromagnet L1 to separate the clutch sleeve L4 from the wire rope wheel 7; the motor is started to rotate forward, drives the belt pulley 10 through the rotation of the left and right worm gears 3 and 4, and drives the belt pulley 10 to press against the energy storage spring cover 9 through the load-bearing belt 8, so that the energy storage spring 11 installed in the energy storage spring cover 9 is compressed to the set position, storing spring potential energy (at this time, the striker is located in the middle of the energy storage spring and serves as a fixed end of the load-bearing belt for the compression spring). After the energy storage spring 11 is compressed to the set position, the motor stops rotating. At this time, the energy storage spring 11 is fixed at the set position by the self-locking characteristic of the worm and worm gear, waiting for firing;

[0074] The third step: After the control program completes the detection and finds that the striker is in the firing state, it energizes the green LED indicator light to prompt that it can be fired;

[0075] The fourth step: Hold the nail gun, aim the nozzle at the position where the nail needs to be driven, press down the safety frame (open the trigger lock), and pull the trigger, that is, pull the locking trigger 20, release the unlocking block 21 below the locking sleeve 14 from the space 204. Under the action of the locking spring 123, the locking sleeve 14 rebounds so that the unlocking groove 126 inside the locking sleeve 14 corresponds to the bead hole 124. The steel ball in the bead hole 124 gets the outer activity space. Under the action of the energy storage spring 11 rebounding, the striker 16 is pulled by the load-bearing belt 8 to leave the sliding sleeve seat 13. At this time, the striker 16 shoots out at high speed along the nail hole on the nail head under the elastic force of the energy storage spring 11 and drives the nail into the corresponding material to complete the nailing operation;

[0076] The fifth step: Release the safety frame and the trigger. The trigger and the safety frame reset under the action of the spring force, and the green LED indicator light goes out; the control program starts a new round of detection and returns to the first step.

[0077] 3. If the product has not been fired for more than 6 minutes after entering the firing state, the control program starts the motor to reverse, releases the energy storage spring 11 to the free state. After the energy storage spring 11 reaches the free state, the machine shuts down. If you need to continue using it, you need to restart the machine.

[0078] Finally, it should be noted that 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 foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

Claims

1. An energy storage and control mechanism for an electric nail gun, characterized in that: It includes a motor, a worm gear associated with the output shaft of the motor, left and right worm wheels respectively meshing with both sides of the worm gear, left and right belt pulleys correspondingly installed on the left and right worm wheels, and a wire rope wheel arranged above the left and right belt pulleys; Both ends of a load-bearing belt are fixedly installed on the left and right belt pulleys. The middle part of the load-bearing belt passes through the head of a striker that penetrates the middle area of a energy storage spring cover after being in contact with and turned by belt pulleys arranged on both sides of the energy storage spring cover. An energy storage spring is sleeved inside the energy storage spring cover, and the other end of the energy storage spring abuts against an energy storage spring base; The wire rope wheel is driven by a driving mechanism. A wire rope is fixed on the wire rope wheel, and the outer end of the wire rope is fixed on the striker; A locking mechanism that matches the head of the striker and is used to fix the head of the striker after it enters is arranged inside the energy storage spring base. An unlocking block that forms part of the locking mechanism is in contact and matches a locking lever handle.

2. The energy storage and control mechanism of an electric nail gun according to claim 1, characterized in that: The driving mechanism of the wire rope wheel consists of a driving bevel gear arranged on the left belt pulley or the right belt pulley, and a driven bevel gear arranged on the wire rope wheel to match the driving bevel gear.

3. The energy storage and control mechanism of an electric nail gun according to claim 2, characterized in that: A wire rope storage chamber is arranged at the bottom of the wire rope wheel, which is used for placing the wire rope when the wire rope wheel reversely releases the wire rope and isolating the contact between the wire rope at the bottom of the wire rope wheel and the periphery of the wire rope storage chamber.

4. The energy storage and control mechanism of an electric nail gun according to claim 2, characterized in that: A clutch mechanism is also arranged on the wire rope wheel, which can disengage the driven bevel gear from the driving bevel gear. The clutch mechanism includes a rotating magnet, an eccentric shaft installed on the rotating magnet, and a fork penetrated by the eccentric shaft. The end of the fork is stuck in a clutch sleeve, and the clutch sleeve is fixed on the wire rope wheel.

5. The energy storage and control mechanism of an electric nail gun according to claim 1, characterized in that: The locking mechanism includes a sliding sleeve seat fixed inside the energy storage spring base. A locking sleeve is sleeved outside the sliding sleeve seat. A bead hole is arranged on the outer edge of the mouth of the sliding sleeve seat for placing steel balls. Unlocking grooves corresponding to the steel balls are arranged on the inner side of the locking sleeve. One end of a locking spring is fixed on the locking sleeve so that the unlocking grooves arranged on the locking sleeve correspond to the bead holes; A locking arc concave surface is also arranged on the head of the striker corresponding to the steel balls.

6. The energy storage and control mechanism of an electric nail gun according to claim 1, characterized in that: Guide wings are arranged on the outside of the energy storage spring cover, and the guide wings are stuck on a guide frame provided with guide grooves; One end of the guide frame is provided with a buffer pad, and the other end is fixed on the energy storage spring base.

7. An energy storage and control mechanism for an electric nail gun according to claim 1, characterized in that: The motor is arranged below the left and right worm wheels, drives a driven wheel through the output shaft, and the worm gear is installed on the axis of the driven wheel.

8. The energy storage and control mechanism of an electric nail gun according to claim 1, characterized in that: It also includes a control circuit. The input end of the control circuit is a position sensor and is arranged on the side of the energy storage spring cover.

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