Adjustable safety device of nailing gun

Abstract

The utility model discloses an adjustable safety device of a nailing gun, relates to the technical field of nailing guns, and mainly solves the problems of simplifying an adjustable safety structure and improving the mounting efficiency. An adjustable safety device of a nailing gun comprises a safety device body and a control mainboard, the safety device body comprises a safety switch and a trigger mechanism, the safety switch is electrically connected with the control mainboard, the trigger mechanism is sleeved with an adjusting sleeve and an adjusting dial wheel, and a plurality of adjusting grooves are formed in the end face of one side of the adjusting dial wheel in the circumferential direction; the adjusting grooves are sequentially arranged from shallow to deep according to the distances from the end faces to the bottoms of the adjusting grooves, clamping pieces are arranged at the other ends of the adjusting grooves, the ends of the clamping pieces abut against the bottoms of the adjusting grooves through adjusting springs arranged on the adjusting sleeves in a sleeving mode, and when the adjusting shifting wheel drives the adjusting sleeves to move front and back, the abutting portions abut against one ends of the adjusting sleeves all the time. Through the mode that the clamping piece, the adjusting groove and the adjusting spring are matched, the triggering stroke of current nailing is adjusted and positioned, the structure is simplified, and the installation efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of nail guns, and particularly relates to an adjustable safety device for a nail gun Background Art

[0002] As a tool for fixing objects, a nail gun is widely applicable to fields such as decoration and furniture manufacturing. By driving a striker to quickly strike a nail, the nail is driven into the object to be nailed. Among them, nail guns are classified into electric nail guns, pneumatic nail guns, and gas nail guns according to the nailing method. Taking a double-cylinder electric nail gun as an example, an electric motor is used as a power source. A piston one located in a first cylinder compresses air through a crank connecting rod, thereby increasing the air pressure in a second cylinder connected to the first cylinder. Until the air pressure reaches a certain threshold, a piston two in the second cylinder pushes the striker forward, and then the nail in the nail outlet nozzle is driven into the object to be fixed. Since it uses an electric motor as a power source and the motor is connected to the power supply battery by pulling the trigger, if there is an incorrect press, there will be a situation of incorrect nailing, affecting the safety of the operator, and the nailing power is single

[0003] To solve the above problems, a trigger rod adjustment mechanism for a nail gun is provided in the prior art. By setting a control main board in the nail gun, while monitoring the state of the nail gun, the control main board is electrically connected to a micro switch in the safety device. When the end of the trigger rod of the nail gun abuts against the object to be nailed, the trigger rod moves backward, and a signal is output to the control main board by pressing the micro switch. At this time, when the trigger is pressed again, the battery can supply power to the motor to drive the motor to drive the piston one to drive the nail out. In addition, the trigger rod consists of a trigger shaft and a trigger rod. A compression spring is arranged between the trigger rod and the trigger shaft. When the trigger rod abuts against the object to be nailed, a backward force is transmitted to the trigger shaft through the compression spring, thereby pressing the micro switch to complete unlocking, and the distance between the trigger rod and the trigger shaft is adjusted through the cooperation of an adjusting screw and an adjusting roller, thereby completing the adjustment of the trigger stroke to adjust the nailing power. To reduce the risk of the safety device failing due to external interference, several protrusions are designed on the outer surface of the adjusting roller, and a spring and a steel ball are used for limiting to ensure the stability of use

[0004] However, due to the additional positioning structure in the prior art, and the parts such as steel balls and springs are relatively small, the structure is relatively complex and difficult to install Summary of the Invention

[0005] The purpose of the utility model is to propose an adjustable safety device for a nail gun aiming at the above problems existing in the prior art. The technical problem to be solved by the utility model is: how to simplify the adjustable safety structure and improve the installation efficiency

[0006] The object of the present utility model can be achieved by the following technical solutions: An adjustable safety device for a nail gun, comprising a safety device and a control main board. The safety device includes a safety switch and a trigger mechanism. The safety switch is electrically connected to the control main board. An adjustment sleeve and an adjustment dial are sleeved on the trigger mechanism. It is characterized in that a plurality of adjustment grooves are circumferentially arranged on one end face of the adjustment dial. The plurality of adjustment grooves are arranged in sequence from shallow to deep according to the distance from the end face to the bottom of the adjustment groove. A clamping member is provided at the other end. The end of the clamping member abuts against the bottom of the adjustment groove through an adjustment spring sleeved on the adjustment sleeve. When the adjustment dial drives the adjustment sleeve to move back and forth through the clamping member, the abutting portion on the trigger mechanism always abuts against one end of the adjustment sleeve.

[0007] This solution is mainly based on the existing trigger rod and micro switch. An adjustment sleeve and an adjustment dial are sleeved on the trigger rod. A plurality of adjustment grooves with different depths are circumferentially arranged on one end face of the adjustment dial. By cooperating the clamping member with the adjustment grooves of different depths, the adjustment sleeve is driven to move back and forth. Since one end of the adjustment sleeve abuts against the abutting portion on the trigger mechanism, during the use process, when the adjustment sleeve moves back and forth, the trigger shaft provided with the abutting portion on the trigger mechanism will move back and forth along with the adjustment sleeve, thereby adjusting the distance between the trigger rod and the trigger shaft in the trigger mechanism to complete the adjustment of the trigger stroke.

[0008] Among them, by arranging the plurality of adjustment grooves in sequence from shallow to deep according to the distance from the end face to the bottom of the adjustment groove, the continuity of the movement of the adjustment sleeve is ensured when the adjustment dial is rotated, which is convenient for adjusting the trigger stroke of the nail gun, conforms to the adjustment logic of the operator, and an adjustment spring is sleeved on the adjustment sleeve. The end of the clamping member can abut against the bottom of the adjustment groove through the adjustment spring, avoiding the separation of the clamping member and the adjustment groove during the use process due to the front-back shaking generated during the nailing process, improving the stability of the adjustment structure. And due to the existence of the adjustment spring, when the adjustment dial is rotated and adjusted, the clamping member can impact the adjustment groove of the adjustment dial during the switching process, while avoiding the continuous rotation of the adjustment dial, the sound and impact generated by the impact can prompt the operator that the adjustment has been completed, thereby improving the use experience.

[0009] In summary, in this application, by setting adjustment grooves on the adjustment dial and making the clamping member on the adjustment sleeve engage with it to complete the adjustment, at the same time, through the cooperation of the clamping member, the adjustment groove and the adjustment spring, the adjustment and positioning of the current nailing power are completed, without the need to additionally add steel balls and springs, simplifying the adjustment structure and improving the installation efficiency.

[0010] In the adjustable safety device of the above-mentioned nail gun, a blocking member is further sleeved on the adjusting sleeve. One end of the adjusting spring abuts against the other end face of the adjusting dial, and the other end abuts against the blocking member. By abutting the two ends of the adjusting spring against the opposite sides of the adjusting sleeve and the blocking member respectively, it is ensured that the end of the clamping member can always abut against the adjusting groove, improving the stability of positioning. And by sleeving the blocking member on the adjusting sleeve, it is convenient for the installation of the adjusting dial and the adjusting sleeve.

[0011] In the adjustable safety device of the above-mentioned nail gun, the end of the clamping member that is clamped with the adjusting groove is semicircular. By adopting the semicircular clamping method, it provides a transition for the clamping member to switch from one adjusting groove to another, ensuring the smooth switching of the clamping member.

[0012] In the adjustable safety device of the above-mentioned nail gun, the adjacent adjusting grooves are semicircular grooves, and the adjacent two semicircular grooves are transitioned by an arc. The clamping member cooperates with the semicircular groove. By adopting the semicircular groove and making the adjacent two semicircular grooves transition through an arc, it provides a transition for the clamping member to switch from one adjusting groove to another, ensuring the smooth switching of the clamping member and ensuring the tightness of the fit with the bottom of the adjusting groove during the clamping process.

[0013] In the adjustable safety device of the above-mentioned nail gun, a cover body is provided on the safety device. The cover body is provided with a strip-shaped limiting groove. When the adjusting dial rotates, the clamping member can move back and forth in the limiting groove. By limiting the clamping member through the limiting groove, it is avoided that the adjusting sleeve rotates during the forward and backward movement, resulting in the failure of the adjusting function.

[0014] In the adjustable safety device of the above-mentioned nail gun, the limiting hole is located at the middle position directly above the cover body, and the limiting groove can communicate the safety device with the outside. It is convenient for the operator to observe the relative position of the clamping member.

[0015] In the adjustable safety device of the above-mentioned nail gun, the trigger rod includes a trigger rod and a trigger shaft. A compression spring is sleeved in the adjusting sleeve. The compression spring is sleeved on one end of the trigger shaft. The abutting portion is located on the trigger shaft. One end of the compression spring abuts against the abutting portion, and the other end abuts against the trigger rod. By means of the compression spring, the abutting portion on the trigger shaft can always abut against one end of the adjusting sleeve.

[0016] In the adjustable safety device of the above-mentioned nail gun, a limiting plate is provided on the cover body. The other end of the trigger shaft can pass through the limiting plate to press the safety switch. A clamping gasket and a return spring are sleeved on the end that can press the safety switch. One end of the return spring abuts against the abutting portion, and the other end abuts against the clamping gasket.

[0017] Compared with the prior art, the present utility model has the following advantages:

[0018] 1. Through the cooperation of the clamping part and several adjusting grooves on the adjusting dial, while driving the adjusting sleeve to move back and forth to adjust the triggering stroke of the triggering mechanism, the end of the clamping part is abutted against the bottom of the adjusting groove by the adjusting spring, avoiding the rotation of the adjusting dial during the nailing process and in the non-use state. Without the need to additionally add a positioning structure, while simplifying the structure, due to the use of a nested manner of multiple components, the installation structure is simplified and the assembly efficiency is improved.

[0019] 2. By providing a limiting groove that is convenient for observation on the cover body covering the safety device, while avoiding the failure caused by the separation of the adjusting groove and the clamping part, by setting the limiting groove at the center position of the top, the operator can intuitively obtain the current nailing state, improving the use experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the overall schematic diagram of the nail gun of the present application;

[0021] Figure 2 is the overall exploded schematic diagram of the nail gun of the present application after removing one side of the housing;

[0022] Figure 3 is Figure 2 the partial enlarged schematic diagram of;

[0023] Figure 4 is the top view sectional schematic diagram of the present application;

[0024] Figure 5 is the right view sectional schematic diagram of the present application;

[0025] In the figure: 1. Nail gun main body; 1a. First cylinder; 1a1. Piston one; 1b. Second cylinder; 1b1. Piston two; 1b2. Firing pin; 1c. Housing; 1c1. Trigger; 1c2. Battery; 1d. Control main board; 1e. Cylinder mounting seat; 1e1. Motor; 1f. Cylinder seat; 1g. Cylinder head; 2. Nail magazine; 3. Nail outlet nozzle; 3a. Base; 4. Safety device; 4a. Triggering mechanism; 4a1. Trigger rod; 4a2. Compression spring; 4a3. Trigger shaft; 4a4. Abutting part; 4a5. Return spring; 4a6. Clamping gasket; 4b. Adjusting sleeve; 4b1. Clamping part; 4b2. Blocking part; 4c. Adjusting dial; 4c1. Adjusting groove; 4d. Adjusting spring; 5. Cover body; 5a. Limiting groove; 5b. Limiting part; 6. Safety switch; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following are specific embodiments of the present invention in combination with the accompanying drawings, further describing the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0027] Embodiment 1

[0028] As Figure 1 and Figure 2 shown, the nail gun of the present application includes a nail gun body 1, a nail magazine 2 and a nail outlet nozzle 3. The nail magazine 2 and the nail outlet nozzle 3 are both located at the front end of the nail gun, and the nail gun body 1 is connected to the nail magazine 2 through the nail outlet nozzle 3. Among them, the nail gun body 1 includes a first cylinder 1a, a second cylinder 1b and a housing 1c. The first cylinder 1a and the second cylinder 1b are clamped within the two housings 1c. The second cylinder 1b is located above the first cylinder 1a. Below the first cylinder 1a, there is a trigger 1c1 and a battery 1c2. The trigger 1c1 is fixed to the handle formed by the cooperation of the two covers 5, and the battery 1c2 is inserted below the handle. Above the nail outlet nozzle 3, there is a safety device 4 and a cover 5 covering the safety device 4. The second cylinder 1b is used to accommodate a piston two 1b1 that drives the striker 1b2 to move. The first cylinder 1a is used to accommodate a piston one 1a1 that does work in the cylinder to provide kinetic energy for the striker 1b2. In addition, a control main board 1d is also provided inside the nail gun body 1. The control main board 1d is located between the motor 1e1 in the nail gun body 1 and the nail magazine 2. One end of the safety device 4 extends out to form a trigger lever 4a1, and the trigger lever 4a1 extends beyond the nail outlet nozzle 3 by a certain distance.

[0029] It is worth mentioning that, as Figure 2 shown, the nail gun body is also provided with a cylinder mounting seat 1e for fixing the first cylinder 1a and the second cylinder 1b and a cylinder seat 1f for connecting the first cylinder 1a and the second cylinder 1b. A cylinder head 1g is covered on the cylinder seat 1f.

[0030] In summary, the working principle of the nail gun of the present application is that when the operator presses the trigger lever 4a1 against a fixed object and presses the trigger 1c1 on the handle, the controller receives the signal of the trigger 1c1 to electrically connect the motor 1e1 and the battery 1c2 to supply energy to the motor 1e1, thereby driving the piston one 1a1 to move in the first cylinder 1a and compress the gas in the first cylinder 1a. Since the spaces of the first cylinder 1a and the second cylinder 1b are interconnected, when the piston one 1a1 compresses the air, the internal air pressure of the nail gun gradually increases, accumulating kinetic energy to push the striker 1b2 on the piston two 1b1 to drive the nail out. After the internal air pressure reaches a certain value, the locking member is separated from the striker 1b2, and the piston two 1b1 drives the striker 1b2 to move quickly, and drives the nail into the fixed object through the nail outlet nozzle 3. The motor 1e1 drives the piston two 1b1 and the striker 1b2 to reset through the piston one 1a1, and the nail feeder in the nail magazine 2 pushes the nail upward to prepare for the next nailing. Regarding how the striker 1b2 and the lock in the nail gun are separated and how the motor 1e1 drives the piston one 1a1 to reciprocate, the specific structure and working principle are described in the utility model patent with the application number 2015204548388, and will not be elaborated here.

[0031] As shown Figures 3 to 5 in the figure, the adjustable safety device 4 of this nail gun includes a trigger mechanism 4a, an adjusting sleeve, an adjusting dial 4c, and a safety switch 6. The trigger mechanism 4a includes a trigger rod 4a1 at the front end, a trigger shaft 4a3, and a compression spring 4a2. The trigger shaft 4a3 is used to press the safety switch 6. One end of the trigger rod 4a1 extends outward for abutting against the object to be nailed. The compression spring 4a2 is located between the trigger shaft 4a3 and the trigger rod 4a1. One end of the compression spring 4a2 abuts against the other end of the trigger rod 4a1. The other end of the compression spring 4a2 is sleeved on one end of the trigger shaft 4a3 and abuts against one side of the abutting portion 4a4 on the trigger shaft 4a3. A return spring 4a5 and a clamping gasket 4a6 are sleeved on the other end of the trigger shaft 4a3. The clamping gasket 4a6 is attached to the limiting portion 5b on the cover body 5 through the return spring 4a5. The adjusting sleeve 4b is sleeved outside the compression spring 4a2. One end of the adjusting sleeve 4b is provided with a clamping member 4b1, and the other end is provided with a blocking member 4b2. Among them, the end surface provided with the blocking member 4b2 always abuts against the abutting portion 4a4 on the trigger shaft 4a3. The clamping member 4b1 is clamped and connected with the adjusting dial 4c sleeved outside the adjusting sleeve 4b. An adjusting groove 4c1 for abutting against the clamping member 4b1 is provided on one side end surface of the adjusting dial 4c. An adjusting spring 4d is also sleeved on the adjusting sleeve 4b. One end of the adjusting spring 4d abuts against the blocking member 4b2, and the other end abuts against the other end surface of the adjusting dial 4c, so that the clamping member 4b1 is in close fit with the adjusting groove 4c1.

[0032] More importantly, as Figure 3 shown in the figure, several adjusting grooves 4c1 are provided on the side end surface of the adjusting dial 4c opposite to the clamping member 4b1. The adjusting grooves 4c1 are arranged in sequence from shallow to deep according to the distance from the end surface to the bottom of the adjusting groove 4c1.

[0033] It is worth mentioning that, as Figure 4 shown in the figure, a cover body 5 is provided on the upper part of the safety device 4. The cover body 5 is used to limit the forward and backward movement of the adjusting dial 4c. In addition, a base 3a for limiting the forward and backward movement of the adjusting dial 4c is also provided above the nail outlet nozzle 3. Among them, a limiting groove 5a for the reciprocating movement of the clamping member 4b1 is provided on the cover body 5. The base 3a and the cover body are used to limit the forward and backward movement of the adjusting dial 4c.

[0034] In summary, the adjustable insurance device 4 of the present application is mainly arranged above the nail outlet nozzle 3 and the tape. One end of the trigger rod 4a1 in the trigger mechanism 4a that extends beyond the nail outlet nozzle 3 abuts against the fixed object. The compression spring 4a2 drives the trigger shaft 4a3 to move backward, thereby pressing the insurance switch 6 electrically connected to the control main board 1d. A signal is sent through the insurance switch 6. After the trigger rod 4a1 leaves the fixed object, the reset spring 4a5 pushes the trigger shaft 4a3 forward through the abutting portion 4a4 until the abutting portion 4a4 abuts against one end of the adjusting sleeve 4b with a blocking portion and separates from the insurance switch 6.

[0035] Among them, an adjusting dial 4c and an adjusting spring 4d are sleeved on the adjusting sleeve 4b. A number of adjusting grooves 4c1 with different depths are provided on the adjusting dial 4c. By abutting the clamping member 4b1 against the adjusting grooves 4c1 with different depths, the adjusting sleeve 4b is driven to move back and forth. Since the abutting portion 4a4 on the trigger shaft 4a3 always abuts against the end of the adjusting sleeve 4b in the non-working state, when the adjusting sleeve 4b moves back and forth in the nail driving direction under the influence of the clamping member 4b1, the distance between the trigger shaft 4a3 and the trigger changes, so that the triggering stroke of the insurance device 4 changes, so as to achieve the effect of adjusting the nail driving depth.

[0036] In addition, since an adjusting spring 4d is also sleeved on the adjusting sleeve 4b, one end of the adjusting spring 4d abuts against the blocking portion, and the other end abuts against the other end face of the adjusting dial 4c. Then, when the adjusting dial 4c rotates to switch different adjusting grooves 4c1, under the influence of the elastic force of the adjusting spring 4d, the adjusting spring 4d applies a backward push to the adjusting spring 4d through the blocking member 4b2, so that the clamping member 4b1 integrally provided on the adjusting sleeve 4b can abut against the bottom of the adjusting groove 4c1 and fit tightly, thereby improving the stability of the adjustable insurance device 4 during use. On this basis, a limiting groove 5a is also provided on the cover body 5 covering the insurance device 4. By arranging the clamping member 4b1 in the limiting groove 5a, the failure caused by the rotation of the adjusting dial 4c driving the clamping member 4b1 during use can be avoided. Without additionally increasing the positioning structure, the triggering force of the insurance device 4 can be adjusted and the influence of the impact force during nail driving on the positioning structure can be reduced. Compared with the positioning structure of steel balls and springs in the prior art, the present application adopts the method of sleeving an adjusting dial 4c and an adjusting spring 4d outside the adjusting sleeve 4b and making the clamping member 4b1 cooperate with the end face of the adjusting dial 4c, which has a simple and reliable structure and higher installation efficiency.

[0037] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains may make various modifications or supplements to the described specific embodiments or use similar means for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

[0038] Although terms such as 1, nail gun body; 1a, first cylinder; 1a1, first piston; 1b, second cylinder; 1b1, second piston; 1b2, firing pin; 1c, housing; 1c1, trigger; 1c2, battery; 1d, control main board; 1e, cylinder mounting seat; 1e1, motor; 1f, cylinder seat; 1g, cylinder head; 2, nail magazine; 3, nail outlet nozzle; 3a, base; 4, safety device; 4a, trigger mechanism; 4a1, trigger rod; 4a2, compression spring; 4a3, trigger shaft; 4a4, abutting portion; 4a5, return spring; 4a6, clamping gasket; 4b, adjusting sleeve; 4b1, clamping member; 4b2, blocking member; 4c, adjusting dial; 4c1, adjusting groove; 4d, adjusting spring; 5, cover body; 5a, limiting groove; 5b, limiting portion; 6, safety switch are used more frequently herein, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present utility model; any interpretation of them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. An adjustable safety device for a nail gun, comprising a safety device (4) and a control main board (1d), wherein the safety device (4) comprises a safety switch (6) and a trigger mechanism (4a), wherein the safety switch (6) is electrically connected to the control main board (1d), and the trigger mechanism (4a) is sleeved with an adjustment sleeve (4b) and an adjustment dial (4c), wherein: A plurality of adjustment grooves (4c1) are circumferentially arranged on the end surface of one side of the adjustment dial (4c), and the plurality of adjustment grooves (4c1) are arranged in order from shallow to deep according to the distance from the end surface to the bottom of the adjustment groove (4c1). A clamping piece (4b1) is provided at the other end, and the end of the clamping piece (4b1) abuts against the bottom of the adjustment groove (4c1) through an adjustment spring (4d) sleeved on the adjustment sleeve (4b). When the adjustment dial (4c) drives the adjustment sleeve (4b) to move forward and backward through the clamping piece (4b1), the abutting portion (4a4) on the trigger mechanism (4a) always abuts against one end of the adjustment sleeve (4b).

2. The adjustable safety device of the nail gun according to claim 1, characterized in that: The regulating sleeve (4b) is also sleeved with a blocking member (4b2); one end of the regulating spring (4d) abuts against the other end surface of the regulating dial (4c), and the other end abuts against the blocking member (4b2).

3. The adjustable safety device of the nail gun according to claim 2, characterized in that: The end portion of the clamping piece (4b1) clamped with the adjusting groove (4c1) is semicircular.

4. The adjustable safety device of the nail gun according to claim 3, characterized in that: The adjacent adjustment grooves (4c1) are semicircular grooves, and there is an arc transition between the two adjacent semicircular grooves, and the clamping piece (4b1) cooperates with the semicircular grooves.

5. The adjustable safety device of a nail gun according to any one of claims 1 to 4, characterized in that: The safety device (4) is covered with a cover body (5), and a strip-shaped limiting portion (5b) groove (5a) is provided on the cover body (5). When the adjusting dial (4c) rotates, the clamping member (4b1) can move forward and backward in the limiting portion (5b) groove (5a).

6. The adjustable safety device of the nail gun according to claim 5, characterized in that: The hole of the limiting portion (5b) is located at a middle position directly above the cover body (5), and the groove (5a) of the limiting portion (5b) can connect the safety device (4) to the outside.

7. The adjustable safety device of the nail gun according to claim 6, characterized in that: The trigger mechanism (4a) comprises a trigger rod (4a1) and a trigger shaft (4a3); a compression spring (4a2) is sleeved in the adjustment sleeve (4b); the compression spring (4a2) is sleeved on one end of the trigger shaft (4a3); the abutment portion (4a4) is located on the trigger shaft (4a3); one end of the compression spring (4a2) abuts against the abutment portion (4a4), and the other end abuts against the trigger rod (4a1).

8. The adjustable safety device of the nail gun according to claim 7, characterized in that: The cover body (5) is provided with a limit portion (5b) plate, and the other end of the trigger shaft (4a3) can pass through the limit portion (5b) plate to press the safety switch (6). The end capable of pressing the safety switch (6) is sleeved with a clamping gasket (4a6) and a return spring (4a5), and one end of the return spring (4a5) is in contact with the abutting portion (4a4), and the other end is in contact with the clamping gasket (4a6).

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