DE102012013475B4 - Locking end piece for a connecting rod - Google Patents

Abstract

Locking end piece (1) with an end piece base body (2), provided for connection to a drive rod (3), the locking end piece (1) being firmly connectable to the drive rod end (4) of the drive rod (3) which can be inserted into a rod opening (5), and wherein an internal clamping area (6) is formed in the rod opening (5), the inside diameter (d) of which is smaller than the outer diameter (D) of the rod end (4), characterized in that an opening (7) of the end piece base body (2 ) a rod bushing (8) having the rod opening (5) with the inner clamping region (6) is inserted, the inner clamping region (6) being designed for non-positive connection by striking the end of the connecting rod (4).

Description

The invention relates to a locking end piece with an end piece base body, provided for connection to a drive rod of a lock, the locking end piece being firmly connectable to the drive rod end of the drive rod which can be inserted into a rod opening, and wherein an inner clamping area is formed in the rod opening, the clear diameter of which is smaller than the outside diameter of the rod end.

Locking end pieces of the aforementioned type are already known from practice and are used, for example, for locking door leaves. The end piece known from practice, which is also referred to as a trap, generally has a continuous bore in the longitudinal direction. A drive rod with its drive rod end is inserted into this hole during assembly. The one from the DE 197 27 365 C1 Known drive rod, for example, known end piece base body has a lateral bore which opens into the drive rod opening. The drive rod is drilled through this hole and then pinned via a spring pin. In this way, there is a positive connection between the drive rod and the locking end piece. The aforementioned work for connecting the drive rod to the trap is generally carried out directly at the construction site, since the drive rods often have to be adapted to the conditions on site.

The problem with the prior art is that the drilling operation is not only laborious and time-consuming, but also that the drills break very often when the drive rods are drilled through.

In DE 44 40 587 A1 describes a basquill lock with two drive rods guided in a lock housing and displaceable in the opposite direction by lock actuation, with locking end pieces. The locking end pieces are intended to be attached to the drive rod by means of an additional sleeve and an easily lost, side grub screw.

The EP 1 475 498 A1 discloses a gate latch device for a single leaf overhead gate. The device comprises a lock, from which locking rods lead to the side. A locking rod tip is coupled to the locking rods via coupling pieces. The locking rod tip and the locking rod are connected to one another by screws provided in the coupling pieces.

From the DE 34 13 069 C2 results in a support profile that can be extended by plugging it onto one another. The support profile is anchored at its upper end face with an extension pin, onto which a next support profile with its lower end face can be pushed until its lower end face comes to rest on the upper end face of a next support profile. The connection is made via a frictional engagement.

The object of the present invention is to provide a locking end piece of the type mentioned at the outset, with which the assembly or connection to a drive rod can be carried out more easily and quickly.

The aforementioned object is achieved according to the invention in a locking end piece of the type mentioned at the outset by a locking piece having the features of claim 1. Advantageous refinements are the subject of the dependent claims.

In contrast to the prior art, it is the case with the present invention that a non-positive or frictional connection is provided for connecting the trap to the drive rod, which connection can be achieved relatively easily by opening the trap to the drive rod, which is cut to length if necessary and then, due to the appropriately adapted dimensioning of the clamping area of the rod opening and the outside diameter of the rod end, there is a frictional connection. In this case, a positive connection can in principle be dispensed with entirely, although it should be pointed out that it is of course also possible in principle for a positive connection to be implemented in addition to the non-positive connection by appropriate means. Since, in principle, a form fit can be dispensed with, the invention is such that the assembly of the locking end pieces on the construction site is made considerably easier by the omission of the bore to be made and thus also prevents drill bits from breaking off.

Moreover, it is preferred in the invention that the clamping area extends only over part of the length of the rod opening. When the invention came about, it was found that this measure results in a sufficient clamping or non-positive connection after the striking of an end piece on a drive rod, the striking being made considerably easier by the aforementioned measure.

In the present invention, a clamping bush having the rod opening with the inner clamping region is inserted into an opening of the end piece base body. This configuration is based on the knowledge that drive rods in usually have no exact dimensional accuracy. Therefore, it is sometimes difficult to form a clamping area in the base body so precisely that on the one hand there is a sufficiently good non-positive connection, but on the other hand it is possible to open the trap on the end of the connecting rod without great effort. By using such a sleeve, inner clamping contours of the inner clamping region can be formed more easily than is possible with the base body.

In a preferred embodiment of the clamping bush, this is non-positively connected to the base body. The non-positive connection between the clamping bush and the end piece main body can preferably be realized in that an outer clamping area is provided on the outside of the clamping bush, the outer diameter of the outer clamping area being larger than the inner diameter of the opening of the end piece main body. Ultimately, this configuration allows the clamping bush to be easily driven or driven into the base body, which is usually done in the factory.

In connection with the outer clamping area, there is the realization of a longitudinal knurling, which cuts into the corresponding opening of the base body when the clamping bush is driven in, thus ensuring a secure non-positive connection.

In order to ensure a defined fit or a defined arrangement of the clamping bush in the base body, in a preferred embodiment the clamping bush has a stop on its outer or outer end for outside contact with the base body. The stop is preferably circumferential in the form of a corresponding collar. The stop ultimately limits the longitudinal movement of the clamping bush when it is driven into the opening of the base body. The stop also offers a larger surface, which makes it easier to drive in or drive in the clamping bush.

In order to clamp the drive rod or the drive rod end in the clamping bush, the inner clamping region has a toothing region, which in turn has at least one tooth. The tooth is provided with a clamping surface inclined in the direction of the drive rod opening. The tooth is ultimately an area that has a free end. This tooth can be inclined as such or can be straight and have such a shape that it only has a correspondingly inclined clamping surface. Ultimately, the only decisive factor is that the inclined clamping surface of the tooth results in a clear diameter of the clamping area that is smaller than the outer diameter of the rod end.

The toothing region preferably has four teeth, which are evenly distributed over the circumference of the clamping bush, with corresponding inclined clamping surfaces, so that a defined clamping effect results all round. The four clamping surfaces ultimately form a kind of conical clamping area.

In addition, it is expedient that the toothing area is provided on the inner end of the clamping bush opposite the stop. This end is the end of the clamping bush, which is inserted into the opening of the end piece base body. Since the toothing area is provided at the end of the clamping bush, the clamping contour can moreover be formed in a simple manner at this point.

In order to obtain a defined, firm connection between the latch and the drive rod, an inner stop for the drive rod end is provided in the end piece base body. The inner stop is at the front end of the rod opening.

In order for the fitter to be able to determine the striking or the exact arrangement of the drive rod end at the inner stop in a simple manner, a control opening which opens into the opening of the end piece main body in the region of the inner stop is provided laterally in the end piece main body. If the connecting rod end can be seen in the inspection opening, it is simultaneously ensured that the connecting rod end lies against the inner end.

In order to be able to strike the trap both on the clamping bush and the trap with the clamping bush on the drive rod, the end piece base body preferably has at its locking end a flat, cross-section to the rod opening central axis for the attachment of a tool. This attachment area makes it easier to attach a corresponding tool and carry out the opening process.

• 1 eine Darstellung eines mit einer Treibstange verbundenen Verriegelungsendstücks,
• 2 eine Schnittansicht der Darstellung aus 1 entlang der Schnittlinie A - A aus 1,
• 3 eine perspektivische Ansicht einer Klemmbuchse,
• 4 eine Seitenansicht der Klemmbuchse aus 3,
• 5 eine Schnittansicht der Klemmbuchse aus 4 entlang der Schnittlinie B - B,
• 6 ein Verriegelungsendstück vor dem Aufbringen auf eine Treibstange,
• 7 die Baueinheit entsprechend 6 nach dem Zusammenfügen,
• 8 eine Darstellung einer anderen Ausführungsform einer erfindungsgemäßen Falle und
• 9 eine Darstellung einer weiteren Ausführungsform eines erfindungsgemäßen Verriegelungsendstücks.

Further features, advantages and possible uses of the present invention result from the following description of exemplary embodiments with reference to the drawing and the drawing itself. All of the described and / or illustrated features form the subject matter of the present invention independently or in any combination Summary in the claims or their relationship. It shows

• 1 a representation of a locking end piece connected to a drive rod,
• 2 a sectional view of the representation 1 along the section line A - A 1 .
• 3 a perspective view of a clamping bush,
• 4 a side view of the clamping bush 3 .
• 5 a sectional view of the clamping bush 4 along the section line B - B,
• 6 a locking end piece before being attached to a drive rod,
• 7 the unit accordingly 6 after merging,
• 8th a representation of another embodiment of a trap according to the invention and
• 9 a representation of a further embodiment of a locking end piece according to the invention.

In the 1 and 2 is a locking end piece 1 shown that a tail body 2 having. The locking end piece 1 , which can also be called a trap, is for connection to a connecting rod 3 intended. The connecting rod is for illustration purposes 3 each on their, the locking end piece 1 cut off opposite end.

How to look in particular 2 is the drive rod 3 with their drive rod end 4 into a rod opening 5 applicable and with the locking end piece 1 firmly connectable. The connection status as such is in 2 shown.

It is now planned that in the rod opening 5 an inner clamping area 6 is provided for the non-positive connection with the connecting rod end 4 serves. For this purpose the inside diameter is d the inner clamping area 6 smaller than the outside diameter D of the drive rod end 4 , How it turns out in particular 2 results, the inner clamping area extends 6 only over a small part of the length of the rod opening 5 ,

In all the illustrated embodiments, it is now the case that in an opening 7 of the tail body 2 a clamping bush 8th is used. The clamping bush 8th shows the inner clamping area 6 and at the same time forms part of the rod opening 5 , The rod opening 5 is therefore partly in the clamping bush ( 8th ) and partly in the base body 2 , The opening is accordingly 7 in the tail body 2 to accommodate the clamping bush 8th slightly larger while following the clamping bush 8th becomes smaller and thus the rod opening 5 forms in the rear area.

For non-positive connection of the clamping bush 8th with the end body 2 serves one on the outside 9 the clamping bush 8th provided outer clamping area 10 that over the outside 9 survives. The outer clamping area 10 has a knurling, not shown, which is preferably longitudinal. The outer diameter of the outer clamping area 10 is larger than the inside diameter of the opening 7 of the tail body 2 , By appropriate selection of the dimensions of the aforementioned diameters, a secure frictional connection between the clamping bush can be achieved 8th and the tail body 2 realize.

At its outside end 11 has the clamping bush 8th a circumferential stop 12 on. How it turns out, for example 2 the stop serves 12 for outside contact with the base body 2 ,

The inner clamping area 6 is at a gear area 13 provided, in the illustrated embodiment, four equally spaced and otherwise identical teeth 14 having. Every tooth 14 is from the neighboring tooth 14 over a slit 15 Cut.

As can be seen in particular from the 2 and 5 results in each of the teeth 14 one towards the rod opening 5 inclined clamping surface 16 on, the clamping surfaces 16 the inner clamping area 6 form. When assembled, the in 2 is shown, the clamping surfaces are 16 the teeth 14 flat to linear on the outside on the outside of the connecting rod end 4 the connecting rod 3 on. The 2 clearly shows that the gear area 13 on in the tail body 2 inserted inside end 16a the clamping bush 8th is provided.

How to look further 2 is at the front end of the rod opening 5 an inner stop 17 for the drive rod end 4 intended. The attack 17 serves to limit the insertion of the drive rod 3 in the tail body 2 , Laterally in the base body 2 there is a control opening 18 that in the rod opening 5 empties. At the inspection opening 18 in the present case it is a blind hole. The inspection opening 18 is arranged such that approximately in the central area of the inspection opening 18 the area of the attack 17 lies so that the connecting rod end 4 when struck through the inspection opening 4 is recognizable.

Otherwise, the end piece base body 2 at its locking end, that of the clamping bush 8th is facing away from a flat attachment area 19 on, which runs transversely to the central axis of the rod opening and is used for attaching a tool or as a striking surface. In the in the 7 and 8th The embodiment shown is the attachment area 19 circularly shaped while at the in 9 illustrated embodiment in a recess of a slope 20 is provided. The attachment area 19 is located opposite the inner stop 17 ,

The 8th and 9 Incidentally clarify that the invention basically applies to all types of locking end pieces 1 extends to connect with connecting rods 3 are provided, regardless of the outer shape of the locking end piece 1 ,

The production of a locking end piece according to the invention 1 takes place in such a way that first the clamping bush 8th into the opening 7 of the tail body 2 is pressed in until the stop 12 on the base body 2 strikes. The outer clamping area 10 fixes the clamping bush 8th in the trap. To assemble the locking end piece thus produced 1 with the connecting rod 3 becomes the connecting rod 3 in the direction of the arrow X into the locking end piece 1 taken. Alternatively, the locking end piece 1 on the connecting rod 3 be opened. This then results from the inner clamping area 6 a frictional connection between that in the tail body 2 held clamping bush 8th and thus between the locking end piece 1 and the connecting rod 3 , Over the control hole 18 the correct driving in or driving in can then be checked.

LIST OF REFERENCE NUMBERS

1

Locking end piece

2

Endstückgrundkörper

3

driving rod

4

Driving rod end

5

rod opening

6

inner clamping area

7

opening

8th

terminal Block

9

outside

10

outer clamping area

11

outside end

12

attack

13

toothed area

14

tooth

15

slot

16

clamping surface

17

inner stop

18

inspection hole

19

attachment area

20

slope

d

clear diameter

D

outer diameter

X

arrow

Y

arrow

Claims (7)

Locking end piece (1) with an end piece base body (2), provided for connection to a drive rod (3), the locking end piece (1) being firmly connectable to the drive rod end (4) of the drive rod (3) which can be inserted into a rod opening (5), and wherein an internal clamping area (6) is formed in the rod opening (5), the inside diameter (d) of which is smaller than the outer diameter (D) of the rod end (4), characterized in that an opening (7) of the end piece base body (2 ) a rod bushing (8) having the rod opening (5) with the inner clamping region (6) is inserted, the inner clamping region (6) being designed for non-positive connection by striking the end of the connecting rod (4). Locking end piece after Claim 1 , characterized in that the inner clamping area (6) extends only over a small part of the length of the rod opening (5). Locking end piece after Claim 1 or 2 , characterized in that the clamping bush (8) is non-positively connected to the end piece base body (2). Locking end piece after Claim 3 , characterized in that an outer clamping area (10), in particular a preferably longitudinal knurling, is provided on the outside of the clamping bush (8), the outside diameter of the clamping area (10) being larger than the inside diameter of the opening (7) of the end piece base body (2 ). Locking end piece according to one of the preceding claims, characterized in that the inner clamping region (6) on at least one tooth (14) Gear area (13) is provided, the tooth (14) having a clamping surface (16) inclined in the direction of the rod opening (5). Locking end piece according to one of the preceding claims, characterized in that an inner stop (17) for the drive rod end (4) is provided in the end piece base body (2) at the front end of the rod opening (5). Locking end piece after Claim 6 , characterized in that a control opening (18) opening into the rod opening (5) in the region of the inner stop (17) is provided laterally in the end piece base body (2).

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