DE4216637A1 - CONSTRUCTION FOR EXTENDING AND RETRACTING A BATCH - Google Patents

Abstract

A guard baton comprises a plurality of cylindrical members 25, 26, 27 which are combined in a telescopic manner in which a conically inclined surface 25d at the top end of an outer cylindrical member 25 and a conically inclined surface 26f at the rear end of an inner cylindrical member 26 can be engaged for preventing slip-off upon extension. A circumferential cylindrical slide guide surface 26e in parallel with a cylindrical axis formed before and after the conically inclined surface 26f and the cylindrical member are put to a plane-to-plane contact, thereby preventing rattling or deviation. Further, the wall thickness at the top end of the outer surface of the outer cylindrical member is increased to prevent slip-off. <IMAGE>

Description

The present invention relates to a construction for training and Retract or pull out and push together tubular baton with telescopic tube structure and especially a construction for extending and retracting a Batons that are capable of being extraordinarily smooth and soft extend and retract without rattling, uneven Movements such as rashes, deviations occur, whereby the baton has an improved lifespan.

In an existing construction to extend and retract one Batons of this type become several, for example cylindrical parts of different diameters in telescopically combined with each other, one inclined outer surface at the rear end of an inner cylindrical part with an inclined inner surface on front end of a cylindrical part that is just outside of the inner cylindrical part lies in a non-slip manner is engaged with each other. This is a Key holder telescopic construction, which itself is not a truncheon, but is applicable to it (U.S. Patent 4,752,027). However, in this known construction both the outer surface and the inner surface at the front end of the outer cylindrical part as inclined surfaces trained, which tapers to the foremost end are formed while both the outer surface and the inner surface at the rear end of the inner cylindrical part also to the rear end as inclined, itself tapered surfaces are formed. As a result, includes  this construction has the following problems.

• 1) the front end of the inclined inner surface of the outer cylindrical part is substantially along a annular line of contact in sliding contact with the cylindrical outer surface of the inner cylindrical part and the rear end of the inclined surface of the inner cylindrical part is also along an in essential annular contact line in sliding contact with the cylindrical inner surface of the outer cylindrical part, these parts in this state when extending and retracting be performed. As a result, the front end of the Guide the outer cylindrical part and the rear end of the Guide the inner cylindrical part to scrape and To show abrasion, so that the game in Guide section is enlarged, causing deviations of the Movement and alignment, as well as hitting and chattering occur.
• 2) The rigidity of the baton in its extended Condition was inadequate, assuming this is due to the irregularities described above such as Chattering is triggered. It can also be a force or sometimes a blow on the baton in Direction perpendicular to the axis of the baton, and it is believed that such a force or a such blow in connection with the movement irregularities like chattering the rigidity of the baton when extended Condition inadequate.
• 3) Will reduce the wall thickness of the cylindrical part the total mass is reduced, the inclined inner surface of the outer cylinder part through the inclined outer surface of the inner Cylinder part bumped and tends to face outwards open when the baton is extended with intense force becomes. As a result, the inside diameter is increased so that the inner cylinder part from the outer cylinder part slides out.

In addition, a truncheon with extendable and retractable Construction in Japanese utility model application 61-1 81 996  shown, the inner and outer parts one Have surface contact section. In the extended state is, however, a retraction lock that projects resiliently outwards and by indenting or slitting an inner one tubular part is formed, in engagement with the front end face of the outer tubular member, thereby it is prevented that the inner tubular member withdraws. As a result, there is a problem in strength of the notched section.

In Japanese utility model 63-90 796 there is an out and retractable mechanism disclosed, but is not detailed internal construction mentioned or disclosed.

The invention has for its object the above Solve problems and design to extend and retract of a truncheon, even after repeated Use fewer chatter or rattling movements or Deviations and mismatches caused and free of Risk of slipping due to pull-out or extension force even if the mass is reduced.

This object is achieved by the subject matter of patent claim 1 solved.

The construction according to the invention for extending and retracting a Batons include several cylindrical parts each of different diameters in a telescopic manner are combined with each other, with an inclined surface on rear end of an inner cylindrical part in the extended Condition with an inclined surface at the front end of a cylindrical part just outside of it engages brought. The front end of the outer cylindrical part has an outer peripheral surface that is cylindrical and runs parallel to the cylinder axis, as well as a Inner surface with a conically inclined surface leading to front end is tapered, as well as a cylindrical  Slideway peripheral surface located at the front end of the conical inclined surface and parallel to Cylinder axis is. The rear end of the inner cylindrical Partially has a cylindrical outer sliding guide peripheral surface parallel to the cylinder axis and a conically inclined surface which is tapered towards the front end and is chamfered and connects to the sliding guide surface. The Sliding guide surface of the outer cylindrical part in one Sliding contact with the outer peripheral surface of the inner brought cylindrical part and the sliding guide surface of the inner cylindrical part is in sliding contact with the brought inner peripheral surface of the outer cylindrical part. A ventilation opening or a ventilation hole can at least be provided at a position of the baton.

In a preferred embodiment of the invention is a Step between the peripheral surface and the base or Approach the tapered surface of the outer cylindrical part is provided, and there is another stage also between the sliding guide surface and the conically inclined Surface of the inner cylindrical part provided to be on to allow intervention at these levels.

According to a further preferred embodiment, a abrasion resistant layer on the inner surface of the outer cylindrical part and the outer surface of the inner cylindrical part provided.

Another possible embodiment comprises a ring abrasion-resistant material with a sliding guide surface, which on is attached to the front end of the outer cylindrical part.

Another embodiment also comprises a ring abrasion-resistant material with a sliding guide surface, which on rear end of the inner cylindrical part is attached.

The angle of inclination for each of the conical,  engageable surfaces to the outer cylindrical Part and inner cylindrical part in a range between 1 ° and 2 °.

When extending and retracting the sliding guide surface, the is cylindrical on the outer cylindrical part, in Surface contact contact level with the cylindrical Brought outer surface of the inner cylindrical part. Further becomes the sliding guide surface on the inner cylindrical part is cylindrical, in surface contact with the cylindrical inner surface of the outer cylindrical surface brought, the parts are performed in this state. As a result, chatter movements or deviations can become apparent compared to the prior art design be reduced. Also caused such a construction even after repeatedly pulling out and running in less abrasion and can cause rattling or other abnormalities movement even after a long period of use Press down the reduced level.

Even if the wall thickness of the cylindrical part is reduced to reduce the total mass is only the front end of the outer cylindrical part on the outer Surface cylindrical to locally increase the wall thickness enlarge. Even when large extension forces are used As a result, the part has a larger one Resistance to a force on the cylindrical Part at the front end opens outwards so that the inside cylindrical part is prevented from sliding. Are the outside cylindrical part and the inner cylindrical part via steps engaged with each other, so is the anti-slip function that prevents slipping out is further improved. In addition, the angle of inclination of each of the conical Engaging surfaces to the outer cylindrical part and inner cylindrical part made larger than 1 °, there is no danger that the inner cylindrical part due to a slight Dimensional error in the manufacturing slides out.  

Furthermore, the lifespan of the construction can be extended Providing means such as forming an abrasion resistant one Layer on the inside of the outer cylindrical part or the outside of the inner cylindrical part, by fastening a ring made of abrasion resistant material with a Sliding guide surface at the front end of the outer cylindrical Partly or by attaching a ring made of abrasion resistant Material with a sliding guide surface at the rear end of the inner cylindrical part can be significantly improved.

In addition, the truncheon according to the invention has in particular sufficient rigidity and rigidity in its extended condition. The invention is particularly also especially effective when using a truncheon Cross handle is applied to the intense compressing Compressive forces are possible.

Overall, therefore, by providing the inclined, engaged bring conical surfaces at the rear end of each inner cylindrical part and front end of each outer cylindrical part slipping when extending or Ejection of the inner cylindrical parts reliably avoided will. Through cylindrical sliding guide surfaces parallel to Cylinder axis, each before and after the tapered Surface areas are formed and adhere to it connect the respective guide surfaces in Brought into contact with the layer, with unevenness of the Movements are reduced. Furthermore, by the cylindrical Outer surface on the front part of the outer cylindrical elements the wall thickness can be increased in this area, so that Slipping is prevented.

The invention will be described in more detail below with reference to the drawings explained. Show it

Figure 1 is an overall perspective view of an extendable / collapsible batons with a transverse handle according to a first embodiment of the invention.

Fig. 2 is a vertical cross section of the batons of Fig. 1;

Fig. 3 is an enlarged cross sectional view of a part for explaining the extension and contraction structure;

FIG. 4 shows a lateral structure, partly in cross section, of a modified embodiment of the baton of FIG. 1;

Figure 5 is a cross-sectional view of a part of the structure for drawing out and pushing together of a baton main body 1 according to a second embodiment of the invention.

Fig. 6 is a cross-sectional view of a portion of a third embodiment of the invention;

Fig. 7 is a front view of an abrasion resistant member in a fourth embodiment of the invention;

Fig. 8 is a cross-sectional view of a portion of a fourth embodiment of the invention;

Fig. 9 is a front view of an area of an abrasion-resistant part in a fifth embodiment according to the invention and

Fig. 10 is a side view of the part shown in Fig. 9.

Preferred exemplary embodiments of the invention are explained below. Fig. 1 shows an overall perspective view of an extendable / collapsible baton with a hand cross, ie across the next handle, according to a first embodiment of the invention. Fig. 2 shows a vertical cross-sectional view of the baton of Fig. 1 and Fig. 3 is an enlarged view of a part to illustrate the construction for extending and pushing.

In Fig. 1, a baton main body 1 is shown in the pushed-together state by a solid line and in the extended or extended state by a dashed line. The baton main body 1 has a transverse handle 2 of a length which can be gripped by a hand, the handle being branched vertically from the baton main body at a point which extends from the center of the baton main body 1 in its longitudinal direction to one end is slightly offset, that is, branches off at a position near a handle A provided at one end of the baton main body 1 . The handle A comprises a cylindrical part A 1 , which is made of synthetic resin, wood or light metal and through which the baton main body 1 is inserted.

As is apparent from Fig. 2, the cross handle 2 of this embodiment includes a support shaft 6 which extends vertically from a mounting base 5 which is used to attach the cross handle perpendicular to the baton main body 1 . The cross handle is rotatable above and below, wherein it has a lower, relatively movable part 7 , which is rotatably fitted around a base end 6 a of the support shaft 6 , and an upper relatively rotatable part 8 is provided, which around an upper end 6 b the mounting shaft 6 is fitted around. In between is a static, fixed part 9 , through which a central section 6 c is inserted and which is fastened to the support shaft 6 at a location between the relatively rotatable upper and lower parts 7 and 8 .

The baton main body 1 has a telescopic construction with several (in the example shown three) cylindrical parts 25 , 26 and 27, each with a different diameter. The outer cylinder 25 of largest diameter has an internal or hollow thread 28 which is formed on the inside of its rear end and extends inwards from the opening. A peg or bolt 29 with an external thread, which has a screw on the inside, is screwed to the internal thread. A cap 30 , which is screwed into the rear end opening, serves as a cover. The outer cylinder 25 comprises a cylindrical surface 25 a, which is formed parallel to the cylinder axis, and an inner surface which has an inclined surface 25 d at the front end, which is tapered towards the front end or converges. A middle cylinder 26 , which is contained inside the outer cylinder 25 as an inner cylindrical member, has an inclined surface 26 f on the outer surface side of the rear end, and its outer diameter is slightly widened toward the rear end opening to match the inclined surface 25 d of the outer cylinder 25 to be engageable. The front end of the middle or intermediate cylinder 26 has an inclined surface 26 d on the inside, which also leads to a taper of the cylindrical part towards the front end and converges conically. An inner cylinder 27 contained within the central cylinder 26 has an inclined outer surface 27 f at the rear end, and its outer diameter is slightly widened toward the rear end opening to correspond with the inclined surface 26 d at the front end of the central inner cylinder 26 to be engageable. Internal threads are formed on the inside of the front end opening, with which a cap 36 is screwed, as indicated in the drawing. The rear end of the inner cylinder 27 has an inner diameter which can be brought into engagement with a fork-shaped spring 28 which is fastened and adjusted on the bolt 29 in the retracted truncheon by means of a screw. The base of the cap 36 at the front end has dimensions such that it can be brought into contact with the front end of the central cylinder 26 .

In order to explain the construction for extending and retracting the baton main body 1 in more detail, the enlarged cross-sectional view of FIG. 3 serves to illustrate that the outer cylinder 25 as the outer cylindrical part and the middle cylinder 26 (as the outer cylindrical part of the inner cylinder 27 ) are shaped at their front end sections such that each of their outer surfaces 25 a ( 26 a) has no inclination in the axial direction, that is to say has a cylindrical shape with a circumferential surface parallel to the cylinder axis. In contrast, each of the front end portions of conically inclined tapered surfaces 25 d wherein the camming surface to the front end of the conically inclined surface 25 are on the inner side (26 d) and a cylindrical slide guide surface 25 (26 c) formed c with a circumferential surface parallel to the cylinder axis, ( 26 d) adjacent. Furthermore, both the inner cylinder 26 as the inner cylindrical part (inner cylinder part with respect to the outer cylinder 25 ) and the inner cylinder 27 on the outside of their rear end have a cylindrical sliding guide surface 26 e ( 27 e) as a circumferential surface parallel to the cylinder axis and a conically inclined tapered surface 26 f (27 f) (27 e) adjoins the slide guide surface 26e at the rearmost end of each cylinder part.

The sliding guide surface 25 c on the inside at the front end of the outer cylinder 25 (in front of the inclined surface 25 d) and the cylindrical outer peripheral surface 26 a of the central cylinder 26 parallel to the cylinder axis are fitted into one another with slight play, and the sliding guide surface 26 e on the outside on rear end of the intermediate cylinder 26 and the inner cylinder circumferential surface 25 b of the outer cylinder 25 parallel to the cylinder axis are also fitted into one another with slight play. In addition, the sliding guide surface 26 c on the inside at the front end of the central cylinder 26 and the outer cylindrical peripheral surface 27 a of the inner cylinder 27 , each parallel to the cylinder axis, are fitted into one another with slight play. The sliding guide surface 27 e on the outside at the rear end of the inner cylinder 27 and the inner cylindrical peripheral surface 26 b of the central cylinder 26 parallel to the cylinder axis are also fitted into one another with slight play.

At least one ventilation hole 31 is formed on the circumferential side of the outer cylinder 25 . Alternatively, the vented hole 31 can also be provided on the central cylinder 26 or inner cylinder 27 of the cap 30 attached to the rear end of the outer cylinder or the cap 36 attached on the front end of the inner cylinder 28 , or the hole can be replaced by a groove or slot, insofar as this ensures that there is an unimpeded air flow between the inside and outside of the cylindrical part of the baton main body 1 in order to ensure a smooth and soft insertion and removal operation.

In this embodiment, the angle of inclination for the conically inclined surface 25 d of the outer cylinder, each conically inclined surface 26 d and 26 f of the middle cylinder and the conically inclined surface 27 f of the inner cylinder 27 is preferably between 1 ° and 2 °. If the angle is less than 1 °, it requires a large force to release the engagement between each of the inclined surfaces and to hold the middle cylinder 26 in the outer cylinder 25 and the inner cylinder 27 in the middle cylinder 26 , making the baton difficult to Main body 1 contract or retract. Also, due to a manufacturing defect, there may be a danger that the inner cylindrical part will slide out of the outer cylindrical part and fly out of the outer cylindrical part due to the pivoting force when the truncheon main body 1 is extended . On the other hand, if the angle of inclination is greater than 2 °, the engagement of each of the inclined surfaces is weakened in the extended state, which is associated with the risk that the engagement is released by the impact or shock reaction of an opponent and the baton main body 1 contracts. Truncheon main bodies 1 were produced in experiments with angles of inclination (taper or cone angles) which were experimentally varied in three steps, ie with 1 °, 1.5 ° and 2 °. Then the relationship between the tensile stress and the maximum compressive stress in the axial direction was determined. The test data are summarized in Table 1.

Table 1

For the purpose of a test procedure, the main body 1 produced was used as a test specimen using a universal material testing device in which the main body 1 was subjected to an axial tensile stress from both ends, then compressed in the opposite direction and the maximum compressive stress was measured. The Prefectural Industrial Technical Center of Ehime was commissioned with the test.

If the truncheon is used for moving in and out, the truncheon main body 1 is pivoted by hand so that the inner cylindrical part is pushed outwards and extends out of the body. In this case, the pull-out force corresponds to the tensile stress shown in Table 1. To retract or push together the extended baton main body 1 , the front end of the baton main body 1 is struck and pressed so that the inner cylindrical part is resumed. In this case, the compressive force corresponds to the maximum compressive stress in Table 1. The table shows that when the inner cylinder part is ejected, for example with a force corresponding to 2943 N (300 Kgf) tensile stress 2551 N (260 Kgf) of force are required to pushing it back together in the case of a taper angle of 1 °, however this value can be reduced to a force of 1766 N (180 Kgf) for a taper angle or angle of inclination of 2 °. In other words, it is obvious that a larger pushing or retracting force must be applied if the angle of inclination is less than 1 ° and that the pushing together is difficult after the cylinder having a small angle of inclination is ejected with a large force. On the other hand, if the angle of inclination exceeds 2 °, the compressive force is further reduced and the inner cylindrical part is retracted after it has been pushed open, so that the function of the baton is no longer achieved.

The mode of operation is explained below.

If a centrifugal force is exerted on the baton main body 1 by gripping the cross handle 2 or the handle A in a state in which each of the cylinders 25 , 26 and 27 is received in a telescopic manner in succession ( FIG. 2), the central cylinder 26 and the inner cylinder 27 pushed out and extended. In this case, the cylindrical outer surface 26 a of the intermediate cylinder 26 , which is parallel to the cylinder axis, is guided along the sliding guide surface 25 c at the front end of the outer cylinder 25 with a slight surface contact level on the plane thereof, and the sliding guide surface 26 e at the rear end of the central cylinder 26 is again guided parallel to the cylinder axis with a slight surface contact along the inner cylinder surface 25 b of the outer cylinder 25 . In the same way, the cylindrical outer surface 27 a of the inner cylinder 27 , which is parallel to the cylinder axis, with light surface contacts level on plane along the slide guide surface 26 c at the front end of the inner cylinder 26 and the slide guide surface 27 e at the rear end of the inner cylinder 27 is also with slight surface contact along the cylindrical inner surface 26 b of the intermediate cylinder 26 , which is parallel to the cylinder axis. Accordingly, the middle cylinder 26 and the inner cylinder 27 can be moved extremely smoothly and smoothly without any pushing or rattling movement. In addition, since the sliding guide surfaces 25 c, 26 e, 26 c and 27 e are brought into surface contact with one another, the abrasion in comparison with the line contact in the line-on-line contact according to the prior art is extremely reduced even if the truncheon over a long period Period of repeated extension and retraction is subjected and the life is greatly improved.

When fully extended, the inclined surface 26 f at the rear end of the intermediate cylinder 26 , which is extended on the cylinder 25, engages with the inclined surface 25 d at the front end of the outer cylinder and the inclined surface 27 f at the rear end of the inner cylinder 27 , is ejected from the middle cylinder 26, b is in engagement with the inclined surface 26 at the front end of the intermediate cylinder 26, and these surfaces are prevented from slipping from each other. Upon engagement or contact to the outer cylinder 25 as the outer cylindrical member (and the inner cylinder 26) d at the inclined surface 25 (and 26 d) on the front end portion of a fixed impact exerted, and the force component along the inclined surface is in the Opening direction exercised outwards. According to the invention, since the outer surface of the outer cylinder 25 (and the inner cylinder 26 ) is cylindrical up to the foremost end, so that the wall thickness at the front end, which tends to experience deformations in the existing structures, is locally increased, this surface also becomes only less deformed when a large force is exerted in the direction of an opening to the outside. As a result, if the baton main body 1 is thrown outward with great force, it can be reliably prevented from sliding out. In addition, the wall thickness of each cylinder part can be reduced overall, so that the mass can also be reduced.

Fig. 4 shows a modified structure of the first embodiment in which a protective member 40 is attached to the baton main body 1 instead of the cross grip. Otherwise, the entire embodiment with the protective part 40 corresponds to the baton main body 1 for extending and retracting according to the embodiment described above.

FIG. 5 shows a part of a structure for extending and retracting the main body 1 according to a second embodiment.

In this embodiment, a step 51 between an inner circumferential surface 25 b (26 b) d at the front end and the base or the approach of an inclined surface 25 (and 26 d) of an outer cylinder 25 as an outer cylindrical member (and the intermediate cylinder 26) provided, while a further step 52 , which can be brought into engagement with the first step 51 , between a sliding guide surface 26 e ( 27 e) and an inclined surface such as 26 f ( 27 f) of the intermediate cylinder as an inner cylindrical part (and an inner cylinder 27 ) is arranged. This modified embodiment has the advantage of providing an improved effect of preventing the steps 51 and 52 from slipping out of engagement.

Fig. 6 shows a detail of a third embodiment of the present invention.

In this embodiment, a ring 55 made of an abrasion-resistant material and with a sliding guide surface 25 c ( 26 c) is attached to the front end of an outer cylinder 25 as an outer cylindrical part (and an inner cylinder 26 ). As an abrasion-resistant material, for example, a titanium alloy or some other hard material or a synthetic resin with low frictional resistance such as fluoroplastic resin can be used, such materials being preferred for these materials. One possibility of attaching the ring 55 to the cylinder part is shown in FIG. 6.

In Figs. 7 and 8, a part of a fourth embodiment according to the invention.

In this embodiment, a ring 56 of the same abrasion-resistant material of the type described with a sliding guide surface 26 e ( 27 e) at the rear end of an intermediate cylinder 26 as the inner cylindrical part (and an inner cylinder 27 ) is adapted and fixed by screwing a threaded clamping ring 57 . The sliding guide surface 26 e ( 27 e) is spherically projecting at several points (four in the exemplary embodiment shown) from the outer surface of the abrasion-resistant ring 56 to the outside. Fig. 8 shows the fixing of the ring 56 by means of the threaded clamp ring 57 on the cylinder part 26 and 27 respectively.

Fig. 9 shows a fifth embodiment according to the invention, which differs from the fourth embodiment of Figs. 7 and 8 in that the sliding guide surface 26 e ( 27 e) of the abrasion-resistant ring 59 is designed as a cylindrical surface.

Each of the third to fifth versions has the advantage through the formation of the sliding guide surface with abrasion-resistant Material as a separate part from the cylindrical part To be able to significantly improve the service life.

For example, although not shown in the drawings, the inner surfaces of the outer cylinder 25 as the outer cylindrical part and the intermediate cylinder 26 and the outer surfaces of the intermediate cylinder 26 and the inner cylinder 27 as the inner cylindrical part can be provided with an abrasion-resistant layer by, for example, a nitride hardening treatment undergo or a layer of a titanium alloy is applied to improve the life.

From the above description it appears that in truncheon according to the invention with the possibility of Ein- and Extend, because in this a sliding guide surface on each of the Ends of the inclined surfaces of the outer cylindrical part and the adjacent inner cylindrical part is provided, along which these parts with the peripheral surface of the cylindrical part can be brought into layer contact on layer are, the advantageous effect can be achieved, a provide exceptionally smooth extension and retraction and the wear and tear of material at the end of the inclined surface even after repeated use reduce, causing rattling or hitting as well Deviations over a long period of time can be prevented. In addition, the abrasion resistance of the sliding guide surface and their contact area is improved,  it is preferably possible to make an extraordinary improvement durability compared to existing designs achieve. In addition, since the outer surface at the front end of the outer cylindrical part is cylindrical and the inner surface of this part with the conical surface inclined towards the front end and one cylindrical sliding guide surface following the front End of the conically inclined surface is provided, whereby the Wall thickness is increased locally at the front end, the further advantageous effect can be achieved that the front end of the outer cylindrical part is less open when extended, thereby preventing the inner cylinder part from then does not slip when on the front end of the outer cylinder a firm impact is applied. Furthermore, preferably Steps in the area of engagement between the inner and outer cylindrical part are formed, causing the angle of inclination each of the inclined surfaces is limited, the Slip prevention effect can be further improved.

If the construction according to the invention for retracting and extending is applied to a truncheon with a cross grip, so delivers they improved rigidity when extended Batons and thus greater reliability.

Claims (8)

1. Construction for extending and retracting a batons, comprising a plurality of cylindrical parts, each of different diameters, which are combined in a telescopic manner, with an inclined surface at the rear end of an inner cylindrical part in the extended state with an inclined surface at the front end of a this straight outer cylindrical member is brought into engagement, characterized in that the front end of the outer cylindrical member (25, 26) has an outer cylindrical surface (25 a, 26 a) parallel to the cylinder axis and having an inner surface defining a to the front end has a conically inclined and tapered surface ( 25 d, 26 d) and a cylindrical sliding guide peripheral surface ( 25 c, 26 c), which adjoins the front end of the conically inclined surface and is parallel to the cylinder axis, and that the rear end of the inner cylindrical part ( 26 , 27 ) an outer cylindrical slide guide circumferential surface ( 26 e, 27 e) parallel to the cylinder axis and a conically inclined surface ( 26 f, 27 f) which is tapered towards the front end and adjoins the sliding guide surface, that the sliding guide surface ( 25 c, 26 c) of the outer cylinder part ( 25 , 26 ) in sliding contact with the outer cylindrical peripheral surface ( 26 a, 27 a) of the inner cylinder part and that the sliding guide surface ( 26 e, 27 e) of the inner cylinder part ( 26 , 27 ) in sliding contact with the inner peripheral surface ( 25 b, 26 b) of the outer cylinder part ( 25 , 26 ) is brought. 2. Construction according to claim 1, characterized in that a step ( 51 ) between the inner peripheral surface ( 25 b, 26 b) and the base of the conically inclined surface ( 25 d, 26 d) of the outer cylindrical part is formed and that a Another step ( 52 ) between the sliding guide surface ( 26 e, 27 e) and the conically inclined surface ( 26 f, 27 f) of the inner cylindrical part is formed. 3. Construction according to claim 1 or 2, characterized in that an abrasion-resistant layer on the inner surface ( 25 b, 26 b) of the outer cylinder part and the outer surface ( 26 a, 27 a) of the inner cylindrical part is provided. 4. Construction according to one of claims 1 to 3, characterized in that a ring ( 55 ) made of abrasion-resistant material with a sliding guide surface at the front end of the outer cylindrical part ( 25 , 26 ) is attached. 5. Construction according to one of claims 1 to 4, characterized in that a ring ( 56 ; 59 ) made of abrasion-resistant material with a sliding guide surface at the rear end of the inner cylindrical part ( 26 , 27 ) is attached. 6. Construction according to one of claims 1 to 5, characterized in that the angle (α) of the inclination of each of the conical interlocking surfaces ( 25 f, 26 f, 27 f) of the outer cylindrical part and inner cylindrical part within a range of 1 ° to 2 ° is specified. 7. Construction according to one of claims 1 to 6, characterized in that the truncheon ( 1 ) is a truncheon with a transverse handle ( 2 ). 8. Construction according to one of claims 1 to 7, characterized in that further a ventilation hole ( 31 ) is provided at least at one point of the batons.