CN217572772U - Sleeving type force supply mechanism and nail gun - Google Patents

Abstract

The utility model belongs to the technical field of fastening equipment, a type power supply mechanism and power actuated setting device are established to cover is related to. The utility model discloses a nail gun has drive arrangement and this drive arrangement has the cover and establishes type power supply mechanism. The sleeved force supply mechanism comprises a cylinder body, a rod seat, a nail shooting rod and a spring unit, wherein the spring unit is freely installed between the rod seat and the rear side part, the spring unit is provided with at least two spring groups, each spring group comprises at least one inner spring and an outer spring sleeved inside the at least one inner spring, and the spiral directions of the inner springs are opposite to those of the outer springs adjacent to the outer springs. Each spring group can form a larger comprehensive elastic coefficient in a unit space to provide larger nail-shooting power, so that the use of a high-power nail-shooting gun is met. In addition, the two spiral directions are opposite, so that the inner spring and the outer spring can be prevented from mutual interference when being compressed or extended, and the internal energy loss can be reduced.

Description

Sleeving type force supply mechanism and nail gun

Technical Field

The utility model belongs to the technical field of fastening equipment, a type power supply mechanism and power actuated setting device are established to cover is related to.

Background

At present, most of the existing nailing guns are pneumatic nailing guns, air pressure needs to be supplemented to the pneumatic nailing guns, the pneumatic nailing guns need to be connected with auxiliary equipment such as an air compressor through special lines when in use, and the pneumatic nailing guns are easy to be restrained by line lengths and the auxiliary equipment during work and are inconvenient.

The patent number is 201921395877. X's chinese utility model discloses a nailing gun, the female end tool comprises a gun body, rifle clamp subassembly and nailing component, the rifle body is including supplying power mechanism and nailing gun mouth, rifle clamp unit mount is on the nailing gun mouth, the inner of nailing component is inserted and is established in supplying power mechanism, the outer end sets up on the nailing gun mouth, still be provided with actuating mechanism on the rifle body, actuating mechanism includes driving motor, the last rotation of driving motor is provided with the drive wheel, it has a plurality of teeth to distribute on the drive wheel, set up a plurality of tooth's socket of mutually supporting with the tooth on the nailing component.

The force supply mechanism comprises a guide cylinder and a driving spring, the driving motor enables the nailing component to move back to the nail shooting direction through the driving wheel, so that the driving spring is compressed, then the driving wheel is separated from the nailing component, and the nailing component is shot at a high speed under the action of the driving spring to realize the nail shooting. Compared with a pneumatic nailing gun, the pneumatic nailing gun does not need auxiliary equipment such as an air compressor and an air pipe, and greatly simplifies the structure of the nailing gun, thereby being convenient to carry and operate.

However, this type of nailing gun has a problem of insufficient nailing force, and cannot meet the nailing requirement of a high-power nailing gun.

Disclosure of Invention

To solve the above problems, a sleeve type force supply mechanism and a nail gun are provided.

The utility model adopts the following technical scheme:

the utility model discloses a type power supply mechanism is established to cover has been supplemented, include: a cylinder disposed within the nail gun, having a front side and a rear side; the rod seat is movably arranged in the cylinder body and divides the cylinder body into a front side cavity and a rear side cavity; the nail shooting rod is fixedly combined with the rod seat and is provided with a nail shooting end which extends out of the front side part and is used for shooting nails; a spring unit freely installed between the rod seat and the rear side, wherein the spring unit has at least two spring groups, each of which includes at least one inner spring and an outer spring sleeving the at least one inner spring inside; the outer spring is opposite in spiral direction to the inner spring adjacent to the outer spring.

The utility model discloses supplementary cover is established type and is supplied strength mechanism, can also have such characteristic, wherein, spring assembly contains different diameters more than two the inner spring, the inner spring with the coaxial setting of outer spring, adjacent two the spiral opposite direction of inner spring.

The utility model discloses supplementary cover is established type and is supplied strength mechanism, can also have such characteristic, wherein, the spring assembly contains a plurality of the same diameter the inner spring, it is these a plurality of the inner spring centrosymmetric sets up the inside of outer spring.

The utility model discloses the type force supply mechanism is established to supplementary cover can also have such characteristic, wherein, two at least spring assembly set up side by side, and center on penetrate the central extension line symmetric distribution of nail pole.

The utility model discloses type power supply mechanism is established to supplementary cover can also have such characteristic, wherein, the spring unit has: at least two layers of spring parts arranged along the moving direction of the rod seat; and the linkage piece is arranged between two adjacent layer spring parts and is used for linking the two layer spring parts, and each layer of spring part is at least provided with one spring group.

The utility model can also be characterized in that the spiral direction of the outer spring of each layer of the spring part is the same; the spiral directions of the outer springs in the spring parts of two adjacent layers are opposite.

The utility model discloses supplementary cover is established type and is supplied power mechanism, can also have such characteristic, wherein, sets up and is being close to preceding lateral part layer spring portion is being regarded as front spring portion, sets up and is being close to back lateral part layer spring portion is regarded as back spring portion, front spring portion with the comprehensive elastic coefficient of back spring portion is different, front spring portion perhaps back spring portion has two at least spring assembly and sets up side by side, and centers on the central extension line symmetric distribution of ail shooter.

The supplementary sleeve type force supply mechanism of the utility model can also have the characteristics that the rod seat comprises a front buffer piece for buffering the vibration of the front layer spring part; the rear side portion includes a rear cushion member for cushioning vibration of the rear spring portion.

The utility model discloses supplementary cover type force supply mechanism of establishing can also have such a characteristic, wherein, have a plurality of guide bars that symmetry set up in the cylinder body, the both ends of each guide bar respectively with preceding lateral part and back lateral part are fixed mutually, the pole seat is movably installed on a plurality of guide bars, at least one deck the layer spring portion including with the guide bar quantity unanimous the spring unit, each group the spring unit install respectively on corresponding the guide bar; the linkage sheet is provided with a plurality of mounting parts movably arranged on the guide rod and at least one guide rod part; one end of the spring part of the other layer is arranged on the guide rod part, and the other end of the spring part of the other layer is arranged on the rear side part of the cylinder body or the rod seat.

The utility model discloses supplemented a drive arrangement, installed in the power actuated setting device for supply the power of penetrating the nail, a serial communication port, include: the sleeved type force supply mechanism is used for supplementing the power of the shooting nail; and the driving mechanism is used for driving the sleeved force supply mechanism to generate power, wherein the force supply mechanism is the sleeved force supply mechanism.

The utility model discloses supplemented a power actuated setting device, a serial communication port, include: and the driving device is used for supplementing the power of the nail shooting, wherein the driving device is the driving device.

Action and Effect of the invention

According to the utility model discloses a power actuated setting device has drive arrangement and this drive arrangement has the cover and establishes type power supply mechanism. The sleeved force supply mechanism comprises a cylinder body, a rod seat, a nail shooting rod and a spring unit, wherein the spring unit is freely installed between the rod seat and the rear side part, the spring unit is provided with at least two spring groups, each spring group comprises at least one inner spring and an outer spring sleeved inside the at least one inner spring, and the spiral directions of the inner springs are opposite to those of the outer springs adjacent to the outer springs. Each spring group consists of an inner spring and an outer spring, and after the inner spring and the outer spring are combined with each other, a larger comprehensive elastic coefficient can be formed in a unit space to supplement larger nail-shooting power and meet the use requirement of a high-power nail-shooting gun. In addition, the spiral directions of the inner spring and the outer spring are opposite, so that the inner spring and the outer spring can be prevented from mutual interference when being compressed or stretched, and the internal energy loss is reduced; and the resultant force of the two can be more concentrated.

In addition, the setting is being close to preceding lateral part layer spring portion is being regarded as preceding layer spring portion, sets up and is being close to back lateral part layer spring portion is regarded as back layer spring portion, preceding layer spring portion with the comprehensive elastic coefficient of back layer spring portion is different, can make spring unit at the in-process of kick-backing after penetrating the nail, and the different acceleration that leads to through the different resilience force of two-layer spring portion causes two-layer spring portion to cushion each other, reduces the acceleration of kick-backing to offset partial resilience force. The impact force acting on the cylinder body is reduced, and the vibration reduction effect is realized. Meanwhile, the rebound acceleration is reduced, so that the vibration time of the spring unit is reduced, the working stability of the nail gun is ensured, and the labor intensity of a user is reduced.

Drawings

FIG. 1 is a schematic view of the nail gun of the present invention;

FIG. 2 is a schematic view of the force supply mechanism, the driving mechanism and the gun nozzle of the present invention;

FIG. 3 is a schematic structural view of the force supply mechanism and the gun nozzle of the present invention;

fig. 4 is a cross-sectional view of the drive mechanism and the muzzle of the present invention;

FIG. 5 is a cross-sectional view of the force providing mechanism and the muzzle of the present invention;

fig. 6 is a schematic structural view of the coaxial arrangement of the spring set of the present invention;

fig. 7 is a schematic structural view of a plurality of inner springs symmetrically arranged in the spring group of the present invention;

fig. 8 is a cross-sectional view of a second force providing mechanism of the present invention;

fig. 9 is a cross-sectional view of a third force providing mechanism of the present invention;

fig. 10 is a schematic diagram of one dimension of the innerspring of the invention;

fig. 11 is a schematic size diagram of the outer spring of the present invention.

1-a force supply mechanism; 2-a drive mechanism; 3-a housing; 4-a lithium battery module; 5-gun nozzle; 6-a nail feeding device; 11-a cylinder body; 111-the front lateral part; 112-posterior lateral part; 12-a pole base; 13-shooting a nail rod;

14-layer spring portion; 141-spring group; 1411-an inner spring; 1412-outer spring; 15-a linkage sheet; 151-a mounting portion; 152-a guide rod part; 16-a guide bar; 17-a cushioning member; 18-front cushion; 19-rear cushion;

20-a drive platform; 21-notched gear; 211-teeth; 212-a notch portion; 22-a reducer; 23-a drive motor; 24-a cam; 25-limit switch; 26-drive teeth.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings and examples.

The first embodiment is as follows:

fig. 1 is a schematic structural view of the nail gun of the present invention.

As shown in fig. 1, the nail gun includes a gun nozzle 5, a nail feeding device 6, a driving device, a lithium battery module 4, and a housing 3.

The gun nozzle 5 is internally provided with a shooting channel and is provided with an ejection hole used as an ejection nail; the nail feeding device 6 is provided with a nail passing channel, nails are arranged in the nail passing channel, and the launching channel is connected with the nail passing channel; the rear end of the gun nozzle 5 is provided with a driving device for driving the shooting nail. The outside parcel of drive arrangement has shell 3, and the rear of shell 3 extends there is the handle, and the lithium cell module 4 of supplementing the energy for actuating mechanism 2 is installed to the handle lower extreme, and the handle upper end is provided with the nail switch that penetrates that is used for controlling drive arrangement.

Fig. 2 is a schematic structural diagram of the force supply mechanism, the driving mechanism and the gun nozzle of the present invention.

As shown in fig. 2, the driving device includes a force supply mechanism 1 and a driving mechanism 2.

Wherein, the force supply mechanism 1 is arranged at the rear end of the gun nozzle 5 and is used for supplementing the power for striking the nail; the driving mechanism 2 is arranged at one side of the force supply mechanism 1 and is used as an external device of the force supply mechanism 1 and used for controlling the force supply mechanism 1 to strike the nail.

Fig. 3 is a schematic structural view of the force supply mechanism and the gun nozzle of the present invention, and fig. 4 is a cross-sectional view of the driving mechanism and the gun nozzle of the present invention.

As shown in fig. 3 and 4, a driving platform 20 is integrally formed on one side of the front portion 111, a driving mechanism 2 is disposed on the driving platform 20, and the driving mechanism 2 includes a driving gear 26 disposed on one side of the nail-shooting rod 13, a notch gear 21 mounted on the driving platform 20, a speed reducer 22, and a driving motor 23.

The output end of the driving motor 23 is connected to the input end of the speed reducer 22, the output end of the speed reducer 22 is provided with a notch gear 21, and the notch gear 21 is provided with a tooth portion 211 meshed with the driving teeth 26 and a notch portion 212 not meshed with the driving teeth 26.

For convenience of installation, the driving platform 20 is perpendicular to the working plane of the front side 111. The driving motor 23 is mounted on the lower end surface of the driving platform 20 through the speed reducer 22, and the notch gear 21 is mounted on the upper end surface of the driving platform 20. A cam 24 and a limit switch 25 are further arranged above the notch gear 21, and the cam 24 and the notch gear 21 rotate synchronously. When the convex portion of the cam 24 touches the limit switch 25, the limit switch 25 controls the driving motor 23 to stop rotating.

Wherein, lithium battery module 4 supplies power for driving motor 23, penetrates the nail switch and is used for controlling driving motor 23 work.

The drive teeth 26 are disposed on the side of the nail shaft 13 adjacent to the notch gear 21 and intermesh with the teeth 211 of the notch gear 21. The length of all the driving teeth 26 is matched with the compression length of the spring unit, and the number of teeth of the tooth portion 211 is matched with the number of teeth of all the driving teeth 26. In this embodiment, the tooth 211 occupies approximately 3/4 of the circumference of the notch tooth and the notch 212 occupies approximately 1/4 of the circumference of the notch tooth, and the notch 21 is rotated 270 ° and the pin-ejecting lever 13 is moved by the amount of the spring unit compressed to the pin-ejecting position.

When the tooth part 211 is meshed with the driving tooth 26, the rotation of the notch gear 21 can drive the nail shooting rod 13 to move; when the notch 212 faces the nail driving lever 13, that is, the tooth 211 does not engage with the driving tooth 26, the nail driving lever 13 is in a state of being restrained by the unnotched gear 21, and the nail can be driven.

Fig. 5 is a cross-sectional view of the force supply mechanism and the gun nozzle of the present invention.

As shown in fig. 5, the force supply mechanism 1 includes a cylinder 11, a rod base 12, a nail ejecting rod 13, a spring unit, and a cushioning member 17.

The cylinder 11 is made of a metal material, the cylinder 11 has a front side portion 111 and a rear side portion 112, and the front side portion 111 and the rear side portion 112 may be integrally formed at the front and rear ends of the cylinder or may be separately provided at the front and rear ends of the cylinder. In the present embodiment, the cylinder 11 is provided separately, that is, a front portion 111 and a rear portion 112 are fixed to the front and rear ends of the cylinder by screws, and the gun nozzle 5 is mounted on the front portion 111.

The cylinder 11 has a plurality of symmetrically disposed guide rods 16 therein, each guide rod 16 has two ends fixed to the front side 111 and the rear side 112, respectively, and the rod seat 12 is movably mounted on the plurality of guide rods 16. Specifically, the front end and the rear end of the guide rod 1 are both provided with mounting convex columns, mounting grooves matched with the mounting convex columns in shape are formed in the front side portion 111 and the rear side portion 112, and the guide rod 1 is fixed in the cylinder body 11 through the mounting grooves.

The inside movable mounting of cylinder body 11 has pole seat 12 and penetrates nail pole 13, set up the mounting hole with 16 shape looks adaptations of guide bar on the pole seat 1, pole seat 1 sets up through the mounting hole activity on the guide bar 16, pole seat 12 is cut apart into preceding side chamber and rear side chamber with cylinder body 11. The nail-ejecting shaft 13 has a mounting end mounted on the stem base 12 and a nail-ejecting end protruding out of the front side 111 for striking a nail. Specifically, the middle part of terminal surface extends before rod seat 12 has a erection column, is provided with the mounting groove on this erection column, penetrates the installation end of nail pole 13 and inserts in the mounting groove to through erection pin fixed connection. The driving end of the driving shaft 13 extends through the front side 111 into the firing channel of the muzzle 5 and is used to strike a nail.

A spring unit is freely mounted between the rod seat and the rear side, wherein the spring unit has at least two spring groups 141, each of the spring groups 141 comprising at least one inner spring 1411 and an outer spring 1412 inwardly housing the at least one inner spring 1411, the outer spring 1412 being oppositely coiled from the inner spring 1411 adjacent to the outer spring 1412.

The spring sets 141 are arranged in parallel, are sleeved on the corresponding guide rods 16, and are symmetrically distributed around the central extension line of the nail shooting rod 13.

In this embodiment, two spring sets are provided, two guide rods 16 are also provided, and are vertically distributed in the inner cavity of the cylinder body 11, and each spring set is sleeved on a corresponding guide rod 16 and symmetrically distributed around the central extension line of the nail ejection rod 13. Therefore, when the nail is shot, the resultant force of the spring group can be effectively concentrated on the nail shooting rod 13.

The spring set comprises an inner spring 1411 and an outer spring 1422 of the same length, which are coaxially arranged and sleeved on the same guide rod 16.

The spring group of the embodiment has the following advantages:

1. on the premise of not enlarging the cylinder body 11, the comprehensive elastic coefficient of the spring group is increased, and the elastic force as large as possible is obtained, so that the spring group can generate larger nail shooting power.

2. The ratio of the maximum load force of the outer spring 1422 to the maximum load force of the inner spring 1411 is 5:2.

3. to ensure the concentric relationship of the combination springs, the inner 1411 and outer 1422 springs are wound in opposite directions, thereby preventing the inner and outer springs from skewing or interfering with each other during compression or extension.

4. Because the rotation direction and the load of the spring are different, the generated resonance is not at the same frequency, thereby greatly reducing the vibration after doing work and improving the comfort level after nailing.

The front end of the spring group is provided with a front buffer piece 18, the rear end of the spring group is provided with a rear buffer piece 19, and the front buffer piece 18 and the rear buffer piece 19 are both annular and are sleeved on corresponding guide rods 16.

In addition, a cushioning member 17 is provided on the inner wall of the front side portion 111 of the cylinder 11, and the outer edge of the cushioning member 17 abuts against the inner wall of the metal cylinder 11. After the nail is shot, the rod seat 12 impacts the buffer member 17, the buffer member 17 contracts, and the impact force is rapidly transmitted to the cylinder 11, so that the rapid transfer and the dissipation are realized.

The cushioning member 17, the front cushion 18, and the rear cushion 19 are made of rubber or elastic plastic.

< modification 1-1>

Fig. 6 is a schematic structural view of the coaxial arrangement of the spring set of the present invention; fig. 7 is a schematic structural view of a plurality of inner springs symmetrically arranged in the spring assembly of the present invention.

When the spring pack contains a plurality of innersprings, the following nested form exists:

the first package type: the spring group comprises more than two inner springs with different diameters, the inner springs and the outer springs are coaxially arranged, and the spiral directions of the two adjacent inner springs are opposite.

As shown in fig. 6, the spring set includes two inner springs 1411 with different diameters and an outer spring 1412, which are sequentially sleeved on the same guide rod 16 according to the diameters, the smaller the diameter of the inner spring, the closer the inner spring is to the guide rod 16, the smallest diameter of the inner spring 1411 is aligned with the outer spring 1412, and the middle inner spring 1411 is opposite to the other two springs.

The spring group of this modification has the following advantages:

1. on the premise of not increasing the cylinder body 11, the comprehensive elastic coefficient of the spring group can be further increased, and larger nail shooting power is provided.

2. Through different arrangement modes in the spiral direction, the concentric relation of the combined springs can be ensured, and the inner spring and the outer spring are prevented from being inclined or interfering with each other.

3. Because the rotation direction, the mass and the rigidity of the spring are different, the vibration frequencies of the spring after compression release acting are different, so that the spring cannot generate resonance, the reaction force of the spring can mutually offset a part, the vibration after acting is greatly reduced, the vibration reduction effect and the nailing effect are improved, and the nailing is more labor-saving and comfortable.

4. Under the condition of obtaining a certain spring force, the spring group has the advantages of small volume, convenience in installation and the like.

The second package type: the spring group comprises a plurality of inner springs with the same diameter, and the inner springs are symmetrically arranged inside the outer spring.

As shown in fig. 7, the spring set includes three inner springs 1411 and one outer spring 1412, which have the same diameter, and the three guide rods 16 are uniformly distributed in the circumferential direction with the central extension line of the nail shooting rod 13 as the axis. The inner springs 1411 are connected in parallel and respectively sleeved on the corresponding guide rods 16.

Wherein, the spiral direction of two inner springs 1411 is opposite to that of the outer spring 1412, and the spiral direction of the other inner spring 1411 is the same as that of the outer spring 1412.

This modification makes full use of the space inside the outer spring 1412, thereby increasing the overall elastic modulus of the spring group.

Compared with the first sleeving form, the inner springs 1411 of the second sleeving form are respectively sleeved on the corresponding guide rods 16, and the positions are relatively fixed, so that the possibility of collision among the springs can be greatly reduced, and the interference among the springs is avoided.

Example two:

the present embodiment provides a second structure of the force supply mechanism:

the spring unit has at least two layers of spring portions 14 and a linking piece 15.

The layer spring portions 14 are arranged along the moving direction of the rod seat. Wherein, each layer of the spring part has at least one spring group, each spring group 141 comprises at least one inner spring 1411 and an outer spring 1412 which internally arranges the at least one inner spring 1411, and the outer spring 1412 is opposite to the inner spring 1411 adjacent to the outer spring 1412 in the spiral direction.

The linkage piece 15 is arranged between two adjacent layer spring portions and is used for linking the two layer spring portions.

When there is only one group of spring groups 141 in each layer of the spring part 14, all the spring groups 141 may be arranged in series, and the spring groups 141 in adjacent layers are connected by the linkage plate.

In this embodiment, the overall elastic coefficients of the spring portions of the two layers are set to be different. Because the comprehensive elastic coefficient of two-layer spring portion is different, can be so that spring unit at the in-process of kick-backing after penetrating the nail, through the different acceleration that the resilience force that two-layer spring portion is different leads to, cause two-layer spring portion to cushion each other, reduce the acceleration of kick-backing to offset partial resilience force. The impact force acting on the cylinder body is reduced, and the vibration reduction effect is realized. Meanwhile, the rebound acceleration is reduced, so that the vibration time of the spring unit is reduced, the working stability of the nail gun is ensured, and the labor intensity of a user is reduced.

In addition, in the same spring group 141, the inner spring housing 1411 and the outer spring 1412 are different in the turning direction and the load, and the generated resonance is not at the same frequency, so that the vibration after the work is done can be further reduced, and the comfort after the nailing can be further improved.

< modification 2-1>

Fig. 8 is a sectional view of a second force supply mechanism of the present invention.

As shown in fig. 8, the layer spring part disposed near the front side part is a front layer spring part, the layer spring part disposed near the rear side part is a rear layer spring part, and the front layer spring part or the rear layer spring part has at least two spring groups disposed in parallel and is symmetrically distributed around a central extension line of the nail shooting rod.

Preferably, the outer spring helical direction of each layer of the layer spring portion is the same; the spiral directions of the outer springs in the spring parts of two adjacent layers are opposite. Specifically, in the front layer spring portion, the outer springs 1412 of the spring groups arranged in parallel in each group have the same spiral direction, and the spiral directions of the outer springs 1412 of the spring groups in the rear layer spring portion are opposite.

Because the rotation direction and the load of the spring are different, the generated resonance is not at the same frequency, thereby greatly reducing the vibration after doing work and improving the comfort level after nailing.

In this embodiment, two sets of parallel spring sets 141 are disposed in the front layer spring portion, and one set of spring sets 141 is disposed in the rear layer spring portion.

As shown in FIG. 10, there are provided the dimensional parameters of the innerspring 1411 with an outer spring diameter of 15.5mm, a length of 86mm, a pitch of 5.6mm, and a wire diameter of 1.5mm.

As shown in FIG. 11, the outer spring 1412 having a spring outer diameter of 20.6mm, a length of 86mm, a pitch of 9.7mm and a wire diameter of 2.5mm is provided.

Two guide rods symmetrically arranged are arranged in the cylinder body, two ends of each guide rod are fixed to the front side portion and the rear side portion respectively, and the rod seats are movably installed on the guide rods 16. The spring groups 141 of the front layer spring part are respectively sleeved on the corresponding guide rods 16.

In order to facilitate the mounting with the rear spring portion, the linkage piece 15 has a plurality of mounting portions 151 movably provided on the guide bar 16 and at least one guide bar portion 152. The installation department 151 is provided with two, seted up in it with the pilot hole of guide bar shape looks adaptation, and the cover is established on the guide bar 16, installation department 151 butt corresponds the spring unit 141 one end of front spring portion. The guide rod 152 extends from the center of the rear side of the linkage plate 15, one end of the rear spring is mounted on the guide rod 152, and the other end of the rear spring is mounted on the rear side 112 of the cylinder 11.

As shown in fig. 8, the combination of the inner and outer spring sets connected in series is adopted, and the spring sets connected in series share corresponding force values under the condition of a certain spring resultant force, so that the excessive compression of the spring sets can be avoided, the premature fatigue of the springs of the spring sets can be prevented, and the service life of the springs can be prolonged.

If a group of spring groups 141 are arranged in the front layer spring part and two groups of spring groups 141 are arranged in parallel in the rear layer spring part, only the position of the linkage piece 15 needs to be reversed, so that one end of the front layer spring part is arranged on the guide rod part 152, and the other end of the front layer spring part is arranged on the rod seat 12.

In order to further improve the vibration damping effect, the rod seat comprises a front buffer piece 18 for buffering the vibration of the front layer spring part; the rear side portion includes a rear cushion member 19 for cushioning vibration of the rear spring portion.

< modification 2-2>

Fig. 9 is a sectional view of a third force supplying mechanism of the present invention.

As shown in fig. 9, two sets of parallel spring groups 141 are provided in the front layer spring portion, and two sets of parallel spring groups 141 are also provided in the rear layer spring portion. Two sets of spring assembly 141 of front spring portion and back spring portion suit respectively on two guide bars 16, and pass through linkage piece 15 interact, linkage piece 15 only has two activities and sets up on the guide bar 16 installation department 151.

As shown in fig. 9, this modification can provide a larger power for driving the nail than modification 2-1.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model should be covered within the protection scope of the utility model.

Claims (10)

1. A sleeved force providing mechanism for installation in a nail gun for providing power to a nail, comprising:

a cylinder disposed within the nail gun, having a front side and a rear side;

the rod seat is movably arranged in the cylinder body and divides the cylinder body into a front side cavity and a rear side cavity;

the nail shooting rod is fixedly combined with the rod seat and is provided with a nail shooting end which extends out of the front side part and is used for shooting nails; and

a spring unit freely installed between the rod seat and the rear side portion,

wherein the spring unit has at least two spring groups,

each spring set comprises at least one inner spring and an outer spring sleeving the at least one inner spring inside;

the outer spring is opposite in spiral direction to the inner spring adjacent to the outer spring.

2. A jacketing power supply mechanism according to claim 1 and further comprising:

wherein the spring assembly comprises more than two inner springs with different diameters,

the inner spring and the outer spring are coaxially arranged,

the spiral directions of two adjacent inner springs are opposite.

3. A jacketing power supply mechanism according to claim 1 and further comprising:

wherein the spring assembly comprises a plurality of the inner springs having the same diameter,

the plurality of inner springs are arranged centrally symmetrically inside the outer spring.

4. A jacket type force supply mechanism according to any one of claims 1 to 3, wherein:

wherein, the at least two spring groups are arranged in parallel and are symmetrically distributed around the central extension line of the nail shooting rod.

5. A nested force providing mechanism as claimed in any one of claims 1 to 3, wherein:

wherein the spring unit has:

at least two layers of spring parts arranged along the moving direction of the rod seat; and

the linkage piece is arranged between two adjacent layers of spring parts and is used for enabling the two layers of spring parts to be linked,

each layer of the layer spring part is provided with at least one spring group.

6. The nesting force supply of claim 5, wherein:

wherein the spiral direction of the outer spring of each layer of the spring part is the same;

the spiral directions of the outer springs in the spring parts of two adjacent layers are opposite.

7. A jacketing power supply mechanism according to claim 6 wherein:

wherein the layer spring portion disposed near the front side portion serves as a front layer spring portion,

the layer spring portion disposed near the rear side portion serves as a rear layer spring portion,

the comprehensive elastic coefficients of the front layer spring part and the rear layer spring part are different,

the front layer spring part or the rear layer spring part is provided with at least two spring groups which are arranged in parallel and are symmetrically distributed around the central extension line of the nail shooting rod.

8. A jacketing power supply mechanism according to claim 7 wherein:

the rod seat comprises a front buffer piece for buffering the vibration of the front layer spring part;

the rear side portion includes a rear cushion member for cushioning vibration of the rear spring portion.

9. The nesting force supply of claim 5, wherein:

wherein, a plurality of symmetrically arranged guide rods are arranged in the cylinder body, two ends of each guide rod are respectively fixed with the front side part and the rear side part,

the rod seat is movably mounted on a plurality of the guide rods,

at least one layer of the spring part comprises the spring groups with the same number as the guide rods,

each group of spring groups is respectively arranged on the corresponding guide rod;

the linkage sheet is provided with a plurality of mounting parts movably arranged on the guide rod and at least one guide rod part;

one end of the spring part of the other layer is arranged on the guide rod part, and the other end of the spring part of the other layer is arranged on the rear side part of the cylinder body or the rod seat.

10. A nail gun, comprising:

a drive device having:

the sleeved type force supply mechanism is used for providing power for driving the nail; and

a driving unit for driving the sleeved power supply mechanism to generate the power,

wherein the jacketing type force supply mechanism is the jacketing type force supply mechanism of any one of claims 1-9.

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