JP2013044430A - Connecting device for pressure line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connecting device having clamp elements that are never lost, densely binding connection elements to be connected to pressure lines even at relatively high operating pressure, and can be manufactured and used in a relatively simple and inexpensive way.SOLUTION: A first connecting element (2) has a first projection section (8) and a second projection section (9), the first projection section and the second projection section are each inserted inside an insertion passage in the axial direction and faces each other on the diameter, the first projection section and the second projection section each have projections (10, 11, 12, and 13) at least on one side, the projections are engaged with cut-outs (14, 15) of clamp jaws (6, 7), or the first projection section and the second projection section each have cut-outs at least on one side in a connection state (16) or an open state (17), or the projections of one clamp jaw are designed to be engaged with the cut-outs in a connection state or an open state.

Description

  The invention relates to a connection device for a pressure line, in which two connection elements form a tight connection of the pressure line and the connection elements connected to each other are fixed by a clamping element.

  Such connection devices are known. For example, Patent Document 1 discloses a connection device having two connection elements to be connected to each other and a clamp element for fixing both the connection elements to each other in the axial direction. For example, the connecting device is used to connect the pressure line of the hydraulic system in a vehicle structure.

  In the above connection device, a clamping element formed as a wire spring is used. This wire spring has two corresponding elastically deformable clamp legs. These clamping legs have a radius relative to the connecting axis in order to engage at least partly from the rear for fixing the axial position of the connecting element in the inner connecting element accommodated in the outer connecting element. It can be inserted into the insertion opening of the outer connecting element extending in the direction. The problem with the connecting device is, inter alia, that the connecting device is not suitable for relatively high operating pressures.

German Patent Application Publication No. 102007015131

  Therefore, the object of the present invention is to close the connection elements connected to the pressure line tightly even at a relatively high operating pressure, and to be able to be manufactured and used relatively easily and inexpensively, and to be lost. A connection device with no clamping element is provided.

  In order to achieve the above object, a connection device according to the present invention is a connection device for a pressure line, and includes a first connection element and a second connection element that can be connected to each other in the axial direction. The second connection element is accommodated in the first connection element, the first connection element having an insertion passage extending radially with respect to the connection axis, and the first connection element being in the insertion passage. A clamping element for connecting the element to the second connecting element is insertable, and the clamping leg of the clamping element is at least connected to the second connecting element accommodated in the first connecting element in the connected state. In a connection device for a pressure line, partially engaged from the rear, the first connection element has a first protrusion and a second protrusion, Each of the two protrusions protrudes into the insertion passage in the axial direction and is opposed in diameter, and each of the first protrusion and the second protrusion has a protrusion on at least one side surface. In the connected state or the open state, the convex portion is locked to the notch of the clamp jaw, or each of the first protrusion and the second protrusion has a notch on at least one side surface. In the connected state or the open state, the convex portion of one clamp jaw is locked to the notch.

  In the dependent claims, advantageous configurations of the connection device according to the invention are described without limiting the protection scope of the invention.

  Advantageously, the clamping element is disc-shaped.

  The clamping element is preferably made of metal, preferably spring steel.

  Advantageously, the clamping legs of the clamping element that run parallel to each other are connected to each other by a transverse part that has spring elasticity.

  Advantageously, the spring force of the transverse part with spring elasticity is determined by the dimension of the cutout extending in an arc in the transition region between the clamping leg and the transverse part.

  Advantageously, the first protrusion and the second protrusion, respectively, in the connected state or in the open state, the protrusions that engage in the corresponding notches of the clamp legs, respectively. On the side facing away from the protrusion.

  Advantageously, the mutually facing inner surfaces of the clamp legs have circular recesses facing each other, and the opposite edges of the recesses extend in the connected state through the insertion passage of the second connection element. Engaging at least partly with the circular outer peripheral surface of the area.

  Advantageously, the edge region of the recess of the clamp leg rests flat on the plane of the second connecting element extending perpendicular to the axial direction.

  Advantageously, the projections and / or notches each have a rounded portion, which is an automatic spring of the clamping jaws during the radial movement of the clamping element to the connected or open state. Provides return or automatic spring-elastic expansion.

  The present invention also relates to a clamping element for a connecting device, wherein the clamping element is formed in a disc shape and has two clamping legs extending parallel to each other, the clamping legs being lateral. Connected to each other by directional portions, the free end regions of the clamp legs each have a notch in the opposite end surface of the free end region.

  The concepts used in the following description, embodiments, and claims are used with the meaning described below.

  A “connecting device” is a connection for a pressure line, implemented as a plug-in connection. This connecting device has first and second connecting elements which are fixed by attachment and insertion of clamping elements so as not to come off.

  A “clamp element” is a component that is preferably fed laterally to the pipeline system after joining of the connection elements in order to connect the first and second connection elements to each other by means of a shape connection.

  “Connected state” indicates the position of the clamping element in which the two connecting elements of the connecting device are connected to each other in the axial direction.

  The “open state” is the position of the clamping element in which the clamping element can be kept from being lost to the first connecting element while the second connecting element can be separated from the first connecting element. Indicates.

  According to the present invention, the connecting device of the present invention has first and second connecting elements that are reliably connected to each other by a clamp element that is inserted into the insertion passage when being joined in the axial direction. The first connection element guides the clamp element in the insertion passage extending perpendicularly to the axial direction via the protrusion in the axial direction of the first connection element arranged on the connection side. These protrusions have protrusions that engage the notches of the clamp jaws of the clamp element in a connected state or an open state to hold the clamp element.

  An important advantage of the present invention is that the clamping element inserted in the guide channel in the connected state forms a reliable and simple axial connection between the first connecting element and the second connecting element. . In the open state, the clamping element that is sufficiently pulled out of the insertion passage is securely and non-lostly retained by the first connecting element. This configuration is particularly advantageous when the connecting device according to the present invention is removed and when a component member including the connecting device according to the present invention is transported.

  The contour of the clamp leg and the contour of the axial projection in the guide track of the first connecting element are at least one guide track for the clamp leg, while the corresponding clamp leg of the clamp element has a notch Are configured such that each protrusion has a convex portion. The protrusions and notches are positioned, and the holding of the position in the connected state is effected in the region of the end region into which the clamp leg is inserted by the resulting shape connection. Therefore, the movement of the connecting element is only possible by overcoming the protrusion when the clamping element is expanded simultaneously.

  Since the protrusions in the axial direction located on the opposite sides of the diameter in the same guide track are similarly provided with protrusions, the clamp element is shaped by the notches of the clamp legs and the shape of the protrusions. The clamping element can be withdrawn until a connection is made and thus held in the open state. In the opened state, the first and second connecting elements can be separated in the axial direction without having to remove the clamping elements during disassembly. The clamping element is not lost at the same time.

  A book in a form in which both of the opposing clamp legs are configured with notches, and the protrusions of the first connecting elements are each configured with a convex portion facing each other in the same manner. The embodiment of the connection device according to the invention is advantageous as a whole. In the above embodiment, a relatively large operating force is required, and therefore the reliability of the connecting device is improved.

  On the other hand, the second connection element has, in its simplest configuration, only a ridge protruding from the pipe line to be connected. The front surface of the collar comes into contact with the first connecting element, and the rear surface of the collar is fixed and in contact with the clamping element inserted into the insertion passage in the axial direction. The second connection element can therefore no longer be separated from the first connection element. The second connection element may have the shape of a tube part with a groove extending around the entire circumference in the simplest configuration. In this configuration, the clamp element fixes the second connecting element in the axial direction by engagement in the groove.

  In an advantageous configuration, the clamping element is configured as a disc-shaped component. The clamping element is preferably made of metal, in particular spring steel. The clamping element can be produced in a particularly simple and inexpensive manner by a stamping process.

  The clamping legs of the clamping elements which are arranged substantially parallel to one another are preferably connected to one another by a spring-elastic lateral part. In this configuration, the spring force of the lateral portion can be determined by the width of the spring-elastic lateral portion. The spring force of the transverse part can also be determined by appropriate selection of the material of the clamping element. Due to the material properties related to the dimensioning of the transverse part, the optimization of the properties can be achieved so that the spring force acting in the area of the clamping jaws can be adjusted as required. In this configuration, the disc-shaped configuration of the clamping element with an arcuate cutout in the region of the transverse part is advantageous, so that the arcuate transverse part is also particularly notable for the length, width and thickness of the arc. Can be adapted.

  In an advantageous configuration of the connecting device, the inner surfaces of the clamping leg portions of the clamping elements facing each other have arcuate recesses facing each other. The mutually facing edges of these recesses engage at least partly from the rear on the arcuate outer periphery of the region of the second connecting element extending through the insertion passage. In this configuration, the edge regions of the recesses of the clamp legs are preferably mounted flat in the plane of the second connection element, which each extends perpendicular to the axial direction.

  According to the present invention, even at a relatively high operating pressure, the connection element connected to the pressure line is tightly bundled, and can be manufactured and used relatively easily and inexpensively, and the clamping element is lost. There is no.

FIG. 2 is a view showing a connection device having a first connection element, a second connection element, and a clamp element, in which two connection elements are shown in cross section. It is a figure which shows a clamp element.

  Embodiments of the present invention will be described below in detail with reference to the drawings.

  According to FIG. 1, a connection device 1 for a pressure line is essentially a first connection element 2 and a second connection element arranged coaxially with respect to the first connection element 2. 3 and a clamp element 4.

  In the description shown in FIG. 1, the second connection element 3 is formed in a manner known per se in the form of a ring edge 5 of the second connection element 3 in a hole (not shown) of the first connection element 2. The first connecting element 2 is inserted until it comes into close contact with the surface not shown in FIG. Since the clamp leg portions 6 and 7 of the clamp element 4 are engaged with the edge portion 5 from the rear side, the first connection element 2 and the second connection element 3 are fixedly bound in the axial direction.

  For effective fixation, the first connecting element 2 is provided with an insertion passage not shown in FIG. This insertion passage likewise extends in a known manner perpendicular to the axial direction. In the insertion passage, two axial projections 8, 9 project into the face of the connecting device which is opposite to each other in diameter. The clamping element 4 can be inserted radially into the insertion passage. Each clamp leg of the clamp element 4 extends in a guide track along one side of the projection.

  The clamping element 4 is a substantially disc-shaped component having two clamping legs 6, 7 and a transverse part 20 connecting the clamping legs 6, 7. The clamp legs 6, 7 have concave recesses 22, 23 on the side of the clamp legs 6, 7 that face the second connection element 3 in the assembled state. A part of the peripheral surface of the second connection element 3 engages with these recesses 22 and 23. The edge regions of the recesses 22 and 23 are placed flat on one plane of the circumferential groove of the second connection element 3, for example, on the back surface of the edge 5. This prevents the clamping element 4 from being expanded when an axial force is generated in the region of the connecting device 1 by increasing the line pressure. Accordingly, the connecting device 1 is expanded based on the pressure increase or pressure peak and based on the axial force generated by the pressure increase or pressure peak, and there is no fear that it may come off alone.

  The first connecting element 2 has convex parts 10, 11, 12, 13 which are preferably integrally formed on both sides in the region of the axially projecting parts 8, 9, preferably evenly of the material. These projections 10, 11, 12, 13 advantageously correspond to the notches 14, 15 provided in the end regions 18, 19 of the clamp legs 6, 7 of the clamp element 4. Thereby, the clamping element 4 is held in the radial direction in the connection state 16 (indicated by the solid line in FIG. 1) in which the two connection elements 2, 3 are closely attached to each other, and the two connection elements 2, 3 are Even in the open state 17 (indicated by broken lines) that are separable from each other, it is possible to be held by the first connecting element so as to prevent loss.

  When a force is applied to the clamp element 4 from the outside in order to move the clamp element 4 between the connected state 16 and the open state 17, the clamp legs 6, 7 become convex 10, 11, 12, 13 and The cutouts 14 and 15 preferably have rounded or beveled portions, which preferably act as impingement slopes, so that they are preferably automatically expanded during movement. The rounded portion or the oblique chamfered portion is clamped until the end region of the clamp leg 6, 7 is spring-elastically deformed during movement of the clamp leg 6, 7 in the radial direction to move in the closed or open state. 6 and 7 can be expanded.

  The clamp element 4 can be provided with one notch only in the area of one clamp leg, and each of the protrusions 8 and 9 can be provided with a single corresponding protrusion. It is. In this embodiment, reaching the connected state 16 and the open state 17 is obtained with a relatively small operating force. It is also possible to provide a convex part on the clamp jaw and a corresponding notch on the protruding part.

  The clamping jaws 6, 7 of the connection element 4 are connected equally to each other through the previously described transverse part 20. The dimensions of the arcuate cutout 21 in the transverse part 20 may be configured such that the width of the transverse part 20 can be sized according to the requirements for the elasticity of the transverse part 20. In this regard, there is also a relationship between the material used for the clamping element, in particular the elastic modulus of the material and the selected dimensions.

  The clamping element is preferably made of metal, preferably spring steel. In particular, the clamp jaw is a punched part.

  By means of the connecting device in this embodiment, the pressure lines can be constrained to each other up to a pressure of 75 bar. This connection device makes it possible to form a particularly compact connection of the pressure line in a line system with a relatively high operating pressure. The connection device according to the present invention is particularly advantageous when it is necessary to remove it, for example, for carrying out an inspection or exchanging the components in the pipeline system.

DESCRIPTION OF SYMBOLS 1 Connection apparatus 2 Connection element 3 Connection element 4 Clamp element 5 Edge 6 Clamp jaw 7 Clamp jaw 8 Projection part 9 Projection part 10 Projection part 11 Projection part 12 Projection part 13 Projection part 14 Notch 15 Notch 16 Connection state 17 Opening State 18 End region 19 End region 20 Lateral portion 21 Notch 22 Recess 23 Recess

Claims (10)

A connection device for a pressure line, comprising a first connection element (2) and a second connection element (3) that can be connected to each other in the axial direction, the second connection element ( 3) is accommodated in the first connection element (2), the first connection element (2) having an insertion passage extending radially with respect to the connection axis, in the insertion passage, A clamp element (4) for connecting the first connection element (2) to the second connection element (3) can be inserted, and clamp legs (6, 7) of the clamp element (4) For a pressure line that engages at least partly from the rear in the connected state (16) to the second connecting element (3) accommodated in the first connecting element (2) In the connection device,
The first connecting element (2) has a first protrusion (8) and a second protrusion (9), and the first and second protrusions (8, 9) are respectively The first protrusion (8) and the second protrusion (9) protrude into at least one side surface of the first protrusion (8) and the second protrusion (9). 10, 11, 12, 13), and in the connected state (16) or the open state (17), the notches (14, 15) of the clamp jaws (6, 7) 11, 12, 13) are locked, or the first protrusion (8) and the second protrusion (9) each have a notch on at least one side surface, In the connected state (16) or the open state (17), the convex portion of one clamp jaw is in the notch Characterized in that it is sealed, the connecting device for the pressure line.   The connection device according to claim 1, characterized in that the clamping element (4) is disc-shaped.   3. Connection device according to claim 1, wherein the clamping element (4) is made of metal, preferably spring steel.   Clamping legs (6, 7) extending parallel to each other of the clamping element (4) are connected to each other by a lateral part (20) having spring elasticity. 4. The connection device according to any one of items 1 to 3.   The spring force of the lateral part (20) having spring elasticity is a cutout (21) extending in an arc in the transition region between the clamp leg (6, 7) and the lateral part (20). The connection device according to claim 4, wherein the connection device is determined by the dimensions of the connection device.   The first projecting portion (8) and the second projecting portion (9) are respectively corresponding cuts of the clamp leg portions (6, 7) in the connected state (16) or the open state (17). The protrusions (10, 11, 12, 13) that engage in the notches (14, 15, 16, 17) are arranged opposite to the first protrusion (8) and the second protrusion (9). 6. The connection device according to claim 1, wherein the connection device is provided on a facing side surface.   The mutually facing inner surfaces of the clamp legs (6, 7) have circular recesses (22, 23) facing each other, and the facing edges of the recesses (22, 23) are in the connected state. 7. The method according to claim 1, wherein the second connecting element (3) engages at least partly from the rear with the circular outer peripheral surface of the region extending through the insertion passage. A connection device according to claim 1.   Edge regions of the recesses (22, 23) of the clamp legs (6, 7) are laid flat on a plane extending perpendicular to the axial direction of the second connecting element (3). The connection device according to claim 7, wherein the connection device is provided.   Each of the convex portions (10, 11, 12, 13) and / or the notches (14, 15, 16, 17) has a rounded portion, and the rounded portion has the connection state (16 ) Or during the radial movement of the clamping element (4) to the open state (17), resulting in an automatic spring-elastic expansion of the clamping jaws (6, 7). Item 9. The connection device according to any one of Items 1 to 8.   Clamping element for a connection device according to any one of the preceding claims, wherein the clamping element is disc-shaped and has two clamping legs (6, 7) extending parallel to each other. The clamp legs (6, 7) are connected to each other by a transverse part (20), the free end regions (18, 19) of the clamp legs (6, 7) 10. The clamping element for a connecting device according to claim 1, wherein each has a notch on the surfaces facing each other.

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