CS206997B1 - Regulation appliance of the expansion apparatus - Google Patents

Description

For nail firing into the walls is used expansion devices provided with a main, into which is usually inserted all-combustible cartridge, hammer and expansion chamber, into which jedním protrudes one end provided with the piston part of the hammer. The pressure of the gases produced by the combustion of the cartridge acts on the piston portion of the hammer, thereby imparting the energy to the hammer, which is transmitted through the hammer to the nail being nailed. Said transferred energy then drives the nail into the wall. In order to control the depth of driving of the nail I into the wall, taking into account any hardness! As a rule, the amount of energy imparted to the nail must be controlled by selecting the amount or quality of the cartridge charge, or; for example by controlling the volume of the expansion space upstream of the piston part of the hammer.

One known solution of the control device of the expansion device comprises a barrel divided into two threaded parts, the rear end of the front part of the barrel being provided with a choke, on which the thrust collar is supported. By screwing both parts and mainly against each other, the depth of insertion of the piston part of the hammer into the expansion chamber changes.

1206997

L changes its volume. Piston part of hammer after setting barrel and before each use of the device usually moves j manually by darkness.

The disadvantage of this solution of the control device is, in particular, its considerable production segmentation, since the split barrel requires special mutual securing of its two parts. A disadvantage of said solution is also relatively difficult to set the selected degree of regulation. Another known solution of the regulating device of the expansion device comprises a regulating pin displaceably mounted in the expansion chamber against the face of the piston part of the hammer. By varying the extension of the control pin into the expansion chamber, the depth I of the possible insertion of the piston part of the hammer into the expansion chamber changes; the chamber and thus also the practical size of the expansion; space.

The disadvantage of this solution of the control device is the disturbance of the integrity and tightness of the expansion chamber I of the device, since said pin must pass freely through its guide.

These drawbacks are largely eliminated by the control device of the expansion device according to the invention, which is characterized in that the hammer is provided with a collar, the barrel being rotatably mounted in the housing and a longitudinal recess in which the adjusting stop provided with a tooth extending space between

206997________, the collar and the piston part of the hammer, taking the pins!

the stop is engaged with a nut provided with an internal thread and arranged around the barrel and provided with a projection for engagement with the instrument housing. The advantage of the control device of the expansion device according to the invention is its relatively low manufacturing ruggedness and simple adjustment of the selected degree of control while maintaining the integrity and tightness of the expansion chamber.

Exemplary embodiments of the control device of the expansion device according to the invention are shown in the drawings, wherein Fig. 1 shows a partial longitudinal section of its first variant, Fig. 2 shows a cross section of a first variant of the control device according to the invention; apparatus according to the invention. '_;j; / í. J jfj? 1 H1; Expansion control device (apparatus according to! The invention shown in FIG. 1 comprises the casing, in which is located the second barrel is a barrel in its rear portion provided with an expansion chamber 3, into which the piston part 4 ram 5, which is displaceably mounted in ^one The barrel 5 is also provided with a collar 6, the barrel 2 being in the housing

The device is rotatably supported and is provided with a longitudinal recess 7. The recess 8 is slidably mounted in the recess, which is provided with a tooth 9 extending into the barrel space 10 between the collar 6 and the piston part 4 of the pusher 5. in engagement with the nut 11, which is provided with an internal thread 12 and is arranged around the barrel 2. The nut

11 is provided with a projection 13 for engaging the housing of the apparatus. [

The nut 11 may be, as shown in FIG.

and 2, on the barrel 2, in this case the barrel 2 has a smooth surface at the location of the nut 2 and is secured against longitudinal displacement on the barrel 2 by a resilient ring 14. In this case the outer surface 15 of the adjusting stop 8 is provided with a thread 16 in engagement with the female thread 12 of the nut 11.

When adjusting the selected degree of control of the apparatus, the main 2 rotates, which carries the stator of the stop 8, proportionally moving the adjusting stop 8 in the longitudinal direction of the barrel 8 and the thread pitch 12, 16. the depth of insertion of the piston portion 4 of the hammer 5 into the expansion chamber 3, thereby adjusting the volume of the expansion coil 3 and thus the power of the apparatus. '

As shown in FIG. 3, the nut 11 may alternatively be provided with two female threads 12a, 12b having different pitches relative to each other, wherein at least a portion of the barrel 2 is provided with an female thread 17 with a pitch corresponding to the female thread 12a of the nut 11. 11 in engagement, and the outer surface 15 of the adjusting stop 8 is provided with a thread 16 with a pitch corresponding to the pitch of the second internal thread 12b of the nut 11, which is the stopper 8 in engagement with the nut 11.

In this case, when the main barrel 2 is rotated, as in the previous case, it also carries the pins, ^{1 a} stop 8, which is by its thread 16 of engagement: * ^{with the} second internal thread 12 of the cap 11? Rteyá je;

a non-rotatable housing 14 of the housing; thereby:

the adjusting stop 8 with the previously described consequences moves in the longitudinal direction. In this variant, moreover, due to the engagement of the external thread 17 mainly: 2 with the first internal thread 12a-p ¥ 0sq, the nut 11 is retracted in the downstream direction and thus the range and fineness can be positively adjusted device power regulation. ; j

Another variant of the control device of the expansion device according to the invention is shown in FIG. 4. In this variant, at least a portion of the barrel 2 is provided with an external thread 17 and a portion of the nut 11 is provided with an internal thread 12. In the remaining part of the matrices there is provided a turnbuckle 8, which is secured against longitudinal movement with respect to the nut 11 by means of a spring ring 14 in a known manner. J

In this case, when the main 2 is rotated, the main 2 is screwed on or off. the nut 11 carrying the adjusting stop 8 is unscrewed therefrom, thereby adjusting the nut 11 and thus the adjusting stop 8 in the longitudinal direction relative to the barrel 2 and the adjusting stop 8 tooth 9 in the manner described in the previous variants machines.

j In order to eliminate the effects of algae arising from; Preferably, the barrel 2 is prevented from rotating by means of a pawl 18 housed in the housing 1 of the device. The pawl 18 may be of conventional design, for example a double-arm lever, pivotably mounted on the housing 1 of the apparatus and spring-loaded by a compression spring 19 to a locked position. ''

In order to adjust and control the power setting of the apparatus, it is advantageous to check the position of the tooth 9 of the adjusting stop 8 relative to the barrel 2 and the barrel. relative to the housing 1 of the apparatus. For this purpose, the regulating device according to the invention can be provided with an eyelet 20 provided in the housing 1 of the device above the adjusting stop 8 and a selected regulating scale 21, the adjusting stop 8 having a tongue 22 for contacting said adjusting scale 21 or the last two variants described. In the housing 1 of the apparatus above the nut 11, a window 20 provided with a control tread 21 may be provided, with a portion of the nut 11; for example, its play or projection 13 is in contact;

; with said control scale 21.

When adjusting the selected degree of power control of the apparatus, the main 2 is then rotated relative to the apparatus housing until the tab 22 of the pusher or pusher. the portion of the nut 11i that can be marked on the control scale 21 of the window 20 does not show that the selected control stage has been reached.

The control device according to the invention can advantageously also be used for expansion devices having: the barrel 2 mounted in the housing 1 of the apparatus in a sliding manner, and which use the machine 2 for the longitudinal movement of the barrel, tensioning of a launcher (not shown), for example, to unlock the device fuse (not shown).

Claims (6)

An adjusting device for an expansion apparatus comprising a housing housing a barrel in its rear part provided with an expansion chamber into which a piston portion engages in a barrel sliding in the barrel, characterized in that the barrel (5) is provided with a collar (6) and a barrel ( 2) is rotatably mounted in the housing (1) of the apparatus and is provided with a longitudinal recess (7) in which the adjusting stop (8) provided with a tooth (9) extending into the space (10) of the barrel (2) between the collar (6) and a piston portion (4) of a hammer (5), the set-up harness (8) engaging a nut (11) provided with an internal thread (12) and disposed around the barrel (2) and provided with a projection (13) to engage housing (1) apparatus. ; Control device according to Claim 1, characterized in that the nut (11) is threaded on the barrel (2) and secured against longitudinal displacement by a spring ring (14), the outer surface (15) of the adjusting stop (8) being threaded (16) by which the adjusting stop (8) engages the female thread (12) of the nut (11). Control device according to claim 1, characterized in that the nut (11) is provided with two internal threads (12a, 12b) with different pitches, with at least a part of the barrel (2) being provided outside. thread (17) with a pitch corresponding to the pitch of the first female thread (12a) of the nut (11) engaging the nut (11) and the outer surface (15) of the adjusting stop (8) is provided with a thread (16) (12b) of the nut (11), which is an adjusting stop (8) in engagement with the nut (11). Control device according to claim 1, characterized in that at least a part of the barrel (2) is provided with an external thread (17) and a part of the nut (11) is provided with an internal thread (12) which engages the male thread (17) of the barrel. 2), wherein the rest of the nut (11) is rotatably supported by an adjusting stop (8), which is secured against longitudinal movement with respect to the nut (11) by a spring ring (14). Control device according to Claim 1, 2, 3 or 4, characterized in that the barrel (2) is secured against rotation by a pawl (18) housed in the housing (1) of the apparatus. 6. The control device according to claim 1, 2, 3 or 4, characterized in that a window (20) provided with a control scale (21) is provided above the adjusting stop (8) in the housing (1) of the device and the adjusting stop (8) is provided with a tongue (22) for contact with the control scale (21). Control device according to Claim 3 or 4, characterized in that it is above the nut (11) in the housing (1) of the apparatus. provided with a window (20) provided with a control scale (21), wherein a portion of the nut (11) is in contact with said control scale (21).