MXPA99004615A - My body key connection - Google Patents

Abstract

The present invention relates to a mixed body for a key assembly mounted on a horizontal surface, said combination being characterized in that the mixed body assembly comprises: a) a key body mounted from above on the horizontal surface; having a top portion disposed above the horizontal surface and a lower portion disposed below the horizontal surface and the shaft being fixed to the horizontal surface c) at least one water supply line connected to the shaft d) the body of key being connected to the key, e) the key body has at least one opening therein for water to be received and discharged from the key, f) the opening is sealed in a sealed manner by the supply line connect the key body and the shaft, and g) a retaining ring is interconnected between the key body and the shaft above the horizontal surface to cover the connection between themselves and substantially avoid the relative movement between the same

Description

MIXED BODY KEY CONNECTION BACKGROUND OF THE INVENTION This invention relates to a mixed body key connection, it relates more particularly to a mixed body key connection which uses plastic components that can be mechanically connected to one another to form a leak-proof connection, without advancing or with low advance, between them. In the prior art, various connection methods are used, for example: a metal component could be interconnected by soft or strong solder; the plastic components could be adhered to each other; the metallic or plastic components could be connected threaded or mechanically. However, these methods and others were deficient in the sense that the connection joints had measurable progress, or were prone to leakage, or were complex, or, easy to connect, were subject to accidental disconnection.

BRIEF DESCRIPTION OF THE INVENTION It is an object of the present invention to provide a mixed body key connection which is simple in construction, economical to produce and reliable in terms of operation.

It is another object of the present invention to provide a mixed body key connection that is quick and easy to make, is a low feed or forward feed connection and is a mechanical connection that protects against accidental disconnection. It is another object of the present invention to provide a mixed body key connection that can be made without tools and that can be disassembled quickly, when desired, for repairs or replacement of components. Other objects, features and advantages of the present invention will become more fully apparent from the following detailed description in the preferred embodiment, the appended claims and the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS In the accompanying drawings: Figure 1 is a perspective and exploded view of a preferred embodiment of a kitchen type key assembly including the composite body of the present invention. Figure 2 is a vertical front view assembled, partially in section with the discharge tube and handle in left profiles, of the preferred embodiment of the mixed body of the present invention shown in Figure 1.

Figure 3 is a perspective and exploded view of the components of the mixed body of the preferred embodiment of the present invention. Figure 4 is a view taken along line 4-4 of Figure 3 showing a plan view, looking upward to the lower part of the key body. Figure 5 is a view taken along line 5-5 of Figure 3 showing a plan view, looking down at the top of the shaft. Figure 6 is a top plan view of the connection of the water supply conduit to the support plate, showing the representation with dotted lines the shaft cavity of the conduit entering the small opening of the radial groove of the plate. support and showing the representation with continuous lines the shaft of the conduit in the large opening of the radial groove of the support plate. Figure 7 is a view taken along line 7-7 of Figure 6 showing a vertical side view of the shaft cavity of the duct in the small opening of the radial groove of the support plate. Figure 8 is a view taken along line 8-8 of Figure 6 showing a vertical side view of the shaft in the conduit of the large opening of the radial groove of the support plate.

Figure 9 is a view taken along line 9-9 of Figure 8 showing a top plan view of the duct shaft in the large opening of the radial groove of the support plate. Figure 10 is an exploded perspective view of the shaft mounted on the horizontal surface with the water supply conduits arranged and aligned therein;, with the key body receivers and retaining ring mounted on the key body which is not connected to the shaft. Figure 11 is a vertical front view of the assembled mixed body of the present invention, partially in section, showing a connection between the key body and the shaft. Figure 12 is an enlarged view of the circular portion of Figure 11 showing the details of the connection between the water supply conduit and the key body receiver. Figure 13 is a vertical front view of the assembled mixed body of the present invention, partially in section, illustrating the first position of the connection between the key body and the shaft. Fig. 14 is a view taken along line 14-14 of Fig. 13 showing a plan view, looking upwards to the lower part of the key body, with the retaining ring disposed on the key body and the connecting arms of the shaft arranged in the coupling grooves of the mixed body, but not yet locked in the assembled position.

Fig. 15 is a view similar to that of Fig. 14, except that the shaft and the retaining ring have been rotated clockwise to an intermediate position, showing the locking tabs of the shaft partially arranged in the handle. Key body cavity. Figure 16 is a vertical front view of the assembled mixed body of the present invention, partially in section, showing the locking tab of the shaft disposed completely in the key body cavity. Fig. 17 is a view taken along line 17-17 of Fig. 16 showing the assembled position of the composite body of the present invention with the locking tabs of the shaft disposed completely in the key body cavity and the retaining ring spliced with the key body and covering the connection steps of the shaft. Figure 18 is an enlarged sectional view taken of the circular portion of Figure 16 showing the details of the final assembled position of the composite body of the present invention with the locking tabs of the shaft disposed completely in the key body cavity and the retaining ring covering the connecting arm of the shaft.

DETAILED DESCRIPTION OF THE PREFERRED MODALITY The mixed body 20 of the present invention can be formed of a suitable material, such as plastic, and is shown in Figures 1 and 2 as modalized in a water mixer key assembly 21 with a single actuator. Mixed body 20 includes a housing or key body 22 having a hollow upper end 24 which receives a conventional cartridge 26 of the ceramic disc type. The lower end of the key body 22 is solid. An upper sleeve 28 is threaded to the key body 22 to the outer side of the hollow upper end 24 thereof. The upper end of the upper sleeve 28 provides a base for the actuator which can take the form of a control handle 30 of the lever type which controls the actuation of the cartridge valve 26. A retaining nut 32 is fixed to the part inside the sleeve 28 for mounting the cartridge valve 26 of the key body 22. The control handle 30 is secured by means of a screw 34 or a lever 36 which is rotatable and deflectable up and down when controlling the flow of water from the cartridge valve 26 responsive to the movement of the lever handle 30. The screw 34 is wrapped by a layer 35 connected to the lever handle 30. The movement of the lever handle 30 acts to cause the valve cartridge 26 mix hot and cold incoming water, received through the water supply pipes or tubes 38, with the conduit shown on the right in Fig. 1 nominally designated for cold water and the left conduit designated nominally for hot water, but it will be understood that one of the conduits 38 supplies hot water and the other conduit 38 supplies cold water there. The resulting mixture of water (as explained hereinafter) is directed to an outlet orifice 40 best shown in Figure 2 in the upper part on the solid part of the key body 22. A lower sleeve 42 is rotatably supported on the key body 22 below the upper sleeve 28 and a discharge conduit 44 which is mounted on the lower sleeve 42 with an annular chamber 46 located between the lower sleeve 42 and the key body 22. A check valve 50 it is mounted adjacent the outlet orifice 40 to prevent back flow in the event of a loss of pressure. Shown in Figure 2 is a non-functioning diverter valve 52 mounted on the key body 22 downstream of the check valve 50 for use with a spray head (as shown) if one were to be added. The water supply conduit 38 shown in the best manner in figures 1, 3 and 11 has a flexible conduit 54 that extends between the upper fitting 56 and the lower fitting 58. The inner fitting 58 is connected to a conventional valve assembly 60, only one of which is shown in Fig. 1, which is the nominated designated cold water supply conduit. The key assembly 21 is mounted on a horizontal surface 62 which can be a kitchen sink and is illustrated in Figures 1 and 2. The horizontal surface 62 has a central opening 64 in which a shaft 66 is disposed which has the ducts 38 mounted therein and spaced on opposite sides of the opening 64 are the identical mounting holes 68. A mastic plate 70 has two threaded members 72 formed thereon to pass through the holes 68 for connection on the horizontal surface 62, for example with the nuts 74. The shaft 66 has an enlarged head 76 which settles in the upper part of the horizontal surface 62 and is formed with a cylindrical body 78 that descends downwards therethrough. A connecting member 80 disposed on the underside of the horizontal surface 62 is connected to the body 78 and the horizontal surface 62 to secure the shaft 66 to the horizontal surface 62. A horizontal surface plate 86 that was sized to cover the plate of mastic 70 and in assembled position, is disposed outwardly in the mastic plate 70 where the edges of the horizontal surface plate 86 rest on the horizontal surface 62. The horizontal surface plate 86 has a predetermined height at its center with a central opening 88 therein, best shown in Figures 2 and 1 1. A retaining ring 90 shown in Figures 2, 11 and 12 sits on the upper part of the enlarged head 76 of the shaft 66. for purposes that are to be explained later herein and have an outer annular cavity 92 formed in its upper bearing above the annular edge 94 to terminate in a vertical flange a nular 96. In assembled position, the horizontal surface plate 86 in the opening 88 is connected to the cavity 92 to be sandwiched between the lower end of the lower sleeve 42 and the retaining ring 90. Returning now to FIG. 3, the The shaft 66 has a central opening that stops through both the enlarged head 76 and the body 78 thereof. An annular cavity 100 is formed in the upper part of the enlarged head 76 in communication with the opening 98. A support plate 102 having an outer diameter substantially equal to the diameter of the cavity 100 is disposed in the cavity 100 of the shaft 66. The support plate 102 has a pair of openings of the mirror image keyhole type or radial grooves 104. Each of the grooves 104 has a small straight sloping opening 106 which extends radially inwardly from the outer circumference of the plate. support 102 stops inwardly of the larger circular opening 108 having a diameter larger than the distance between the straight and opposite sides of the opening 106. The support plate 102 may have a diverter duct opening 110, shown in FIGS. Figures 3 and 10, which is not used in the present embodiment, but, but if a diverter duct "not shown" was to be added, it could be used. In order to connect the water supply conduits 38 to the support plate 102, the conduits 78, as best shown in FIGS. 3 and 11, will be disposed through the aperture 98 of the shaft 66 before its connection to the support plate 102. Since the connection is the same for both conduits 38, only one will be shown and described with reference to figures 6, 7, 8 and 9. Figures 6 and 7 show the upper attachment 56 that has an enlarged head 112 formed in the upper part of a shaft 114 having a cavity 116 that reduces the diameter of the recessed portion to a size only slightly smaller than the small opening 106 to allow the shaft cavity 116 of the upper fitting 56 to be inserted into the small opening 106 represented by the dotted line showing the accessory 56 of figure 6 and slides in the large opening 108 represented by the solid line showing the accessory 56 of figure 6. Once the shaft cavity 16 has remained in the larger opening represented by the dotted line showing the accessory 56 in figure 8, the fitting 56 will move downward to seat the shaft 114 in the larger opening 108 which has substantially the same diameter as that of the shaft 1 14. In this position, the enlarged head 112 sits on the upper surface of the plate. support 102 represented by the solid line showing the accessory 56 of figure 8, position in which the accessory 56 is in assembled position on the support plate 102 and, because the diameter of the shaft 114 is greater than the small opening 106, it will remain in the larger opening 106, where it is non-removable from the groove 104 of the supporting plate 102. An internal opening 1 18 best shown in Figure 12 is formed above the cavity 1 16 substantially of the same diameter that the outer diameter of a cylindrical receiver 120 integrally formed by the key body 22 and extending outwardly from the bottom 122 thereof. The upper end of the opening 1 18 widens outward to form a tapered section 124 whose taper increases upward to define a wide mouth opening large enough to fit in an O-ring 154 between the tapered section 124 and the receiver 120 and securing a seal with sealing between them as described more fully hereinafter. The shaft 66 illustrated in Figures 2, 3, 5, 10, 11 and 12 has two diametrically opposed connecting arms 128 extending vertically upwardly from the top of the enlarged head 76 a short distance and are formed inwardly. of the outer circumference thereof, adjacent to the cavity 100. The upper end of the arms 128 is bent radially inward to form a locking tab 130 extending substantially horizontally from each of the arms 128. The arms of connection 128 and locking appendages 130 define members configured as "L" inverted. As explained above, the valve cartridge 26 is received by the hollow upper end 24 (FIG. 2) of the key body 22. The water supply conduits 38 pass water through the key body 22 through the holes inlet 132 and 134, respectively, as shown in Figures 3 and 4. Since the structure is the same for both inlet ports 132 and 134, for convenience, reference will be made only to the inlet 132 and is illustrated in FIG. Figures 2, 11 and 12. The inlet hole 132, best shown in Figures 10, 11 and 12, extends from the cylindrical receiver 120 up through the key body 22 to supply the water to the cartridge valve 26. In the lower part 122 of the key body 22, an annular ring 136 is formed around the receiver 120 for purposes explained more fully hereinafter. The lower section 138 of the key body 22 below the annular chamber 46 is sealed by the O-ring 140 shown in the best manner in Figures 3, 11 and 12 on the lower end of which is an annular platform 142. The platform 142 serves as the lower part of a shallow circumferential groove or cavity 144 whose upper side is formed by a circular shoulder 146 disposed inwardly of the outer circumference of the platform 142 and having a horizontal end 148. The inner wall 150 (FIG. ) of the cavity 144 is circular and extends to the end 148 on two diametrically opposed sides to define circumferential openings or coupling slots 152 that communicate with the cavity 144 and serve to divide the shoulder 146 into two portions, each of which it extends radially outward from the wall 150 and has circular outer circumferences extending a short distance over the annular platform 142 to the upper side of the cavity 144. The interior of the wall 150 adjacent the end 148 limits with the end of the lower part 122 of the key body 22. A pair of O-rings 154 is sized to be spliced over the receivers. 120 for purposes explained more extensively later in the present. The broken retaining ring 90 illustrated in figures 2, 3, 10, 11, 12, 13 and 14 has a diameter substantially equal to the diameter of the key body 22 on which it will be spliced. The flange 94 extends outwardly from the outer circumference of the ring 90 interrupted only by the split opening 158 therein. The cavity 92 is formed on the side of the rim 94 which is opposite the body 22 on which the horizontal surface plate 86 (Figures 11 and 12) is mounted between the sleeve 42 and the ring 90. The retaining ring 90 has a flat surface 162 which is joined to the platform 142 and a flat surface 164 which is joined to the upper part of the enlarged head 76 of the shaft 66, each in the assembled position shown in figures 11 and 12. The ring 90 has a large substantially open lower part in which a pair of diametrically opposed detents 166 extends. Each of the detents 166 has circular inner surfaces of curvature substantially the same as that of the corresponding circular outer circumferences of the shoulders 146. Adjacent to the detents 166 and having a greater radius measured from the center of the ring 90 than that of the detents 166 , there are a pair of detents 168 and in the center of each there is a second deeper pair of diametral cavities 170 and 172 best shown in FIGS. 3 and 14 with the cavity 172 being formed in the split aperture 158 of FIG. equal radius but slightly wider than the cavity 170 that is formed opposite to it. The cavity 170 has the opposite edges 174 terminating in the cavities 168. The radius of the edges 174 overlap the radius of the connecting arms 128 to cause adjacent contact therebetween for purposes explained more extensively hereinafter. In order to assemble the mixed body 20, key body 22 and shaft 66 will be relatively rotated, to align the connecting arms 128 of the shaft 66 with the engagement slots 52 of the key body 22. Also aligned are the supply lines water 138 of the receivers 120. The support plate 102 having the water supply conduits 138 sits rotatably in the cavity 100 and is rotated to make possible the required alignment to be made, since the spacing between the respective conduits 138 and receivers 120 is predetermined to be equal. The placement of the connecting arms 128 in the coupling slots 152 as shown in Figs. 13 and 14 serve the double function of locating the locking lugs 130 adjacent the cavities 144 and connecting the conduits 38 in the receivers 120 as it is shown in the best manner in figures 11 and 12. By placing the conduits 38 in the receivers 120, the support plate is connected to the end 148 of the shoulder 146 and the enlarged head 112 is connected to the lower part 122 of the body of key 22, providing space to the upper end of the tapered section 124 for the annular ring 136 which is spliced to compress the O-ring 126 between the receiver 120 and the tapered section 124 both for sealing and elastically connecting the conduit 38 and the receiver 120. Also, the relative rotation between the key body 22 and the shaft 66 does not affect the connection of the conduit 38 and the receiver 120, since the support plate 102 is free to maintain its position during the relative rotation of the key group 22 and the shaft 66. For ease of assembly, the split retainer ring 90 as shown in Figures 10 and 14 will be mounted on the lower section 138 of the key body 22, assembling the detents 166 on the shoulders 146. Since the outside diameter of the shoulders 146 is slightly larger than the diameter between the opposed detents 166, the split aperture 158 will be slightly extended, but this is a temporary change, since the ring 90 It is elastic. The insertion of the arms of connection 128 of the shaft 66 to the engaging slits 152 of the key group 22 shown in Figs. 13 and 14 illustrates a first position in the assembly of the mixed body 20. An intermediate position is illustrated in Fig. 15 where the arrows with The continuous line on both the retaining ring 90 and the connecting arms 128 of the shaft 66 indicates the clockwise rotation of these components. It will be understood that other components could have been rotated to assemble the mixed body 20 and the rotation could have been in the counterclockwise direction rather than in the clockwise direction, but in this example, this description of the assembly will suffice. Accordingly, the clockwise rotation of the shaft 66 will deflect the connecting arms 128 to abut them with the edge 174 of the cavity 170 to force an equally clockwise movement of the ring. of retention 90 by deviating the detent 166 on the heights 146, while the locking appendages 130 are partially positioned within the circumferential cavity 144 as shown in Figure 15. The continuous rotation in the clockwise direction of the shaft 66 will place the connecting arms 128 in the clock positions 6 and 12 used in Figure 17 wherein the retainer 166 of the retaining ring 90 will snap into the engagement slits 152 to reach the 3 and 9 positions of the watch. In this position, the retaining ring 90 is reset to its non-extended position and the opening 158 returns to its normal size (smaller), as best shown in Figure 17. The detents 166 of the retaining ring 90 are of fine adjustment in the coupling slits 152 and the shoulders 146 of the key group 22 will be arranged in the cavities 168 where there is a small radial distance between them. Also, the connecting arms 128 are disposed in the cavities 170 and 172 with a similar small radial distance therebetween, but the retaining ring 90 acts to cover the connecting arms 128 to prevent accidental removal of the locking lugs 130. of its junction within the cavity 144. It will be seen that the assembly of the mixed group 20 is completed by the simple mechanical connection of the components, without the need for tools, such as by insertion and twisting for the locking movement between the body of key 22 and the shaft 66, the retaining ring 90 covering the relative movement of connection and imitation between them to ensure against accidental disconnection thereof. Such connection is for advance or low advance, low cost and promotes ease of installation and repair capacity. As indicated above, the material and components of the mixed body 20 can be made of any suitable plastic. It will be appreciated that although a particular embodiment of the invention is shown and described, modifications may be made. The appended claims are intended to cover all such modifications that are included within the true spirit and scope of the invention.

Claims (22)

NOVELTY OF THE INVENTION CLAIMS

1. - A mixed body for a key assembly mountable on a horizontal surface, the mixed body comprising: a) a key body mountable on the horizontal surface; b) a shaft fixed to the horizontal surface; c) at least one water supply conduit connected to the shaft; d) a key body disposed above the horizontal surface and connectable to the shaft; e) a key body having at least one opening therein for the water to be discharged from the key; f) the opening to be sealed by the supply conduit during the connection of the key body and the shaft; and g) a retaining ring mounted on the key body and the shaft to limit relative movement therebetween.

2. The combination according to claim 1, further characterized in that: a) the water supply conduit in the shaft includes a cold water supply conduit and a hot water supply conduit; b) each of the supply conduits has an enlarged head; c) a support plate is received removably in the shaft; d) a plurality of radial slits is formed in the support plate; e) each of the supply conduits is arranged in one of the slots, with the enlarged heads thereof disposed above the support plate and facing outwards; and f) the key body has an opening for cold water and an opening for hot water, each having to be connected with sealing by the enlarged head of the respective ducts for cold and hot water during the connection of the key body and the shaft. .

3. The combination according to claim 2, further characterized in that: each of the slots that receives the water conduits are formed with an opening of the keyhole type.

4. The combination according to claim 3, further characterized in that: the largest opening of the opening of the keyhole type is disposed radially inward and the smaller opening thereof.

5. The combination according to claim 4, further characterized in that: the grooves of the support plate extend radially inward from the circumference thereof.

6. The combination according to claim 5, further characterized in that: a) each of the supply conduits has a shaft formed under the enlarged heads thereof of reduced diameter; b) a cavity is formed on each of the sticks in spaced relation and below the enlarged heads thereof; and c) the diameter of the cavity is substantially equal to the small aperture of the aperture of the keyhole type and the diameter of the aperture is substantially equal to the large aperture of the aperture of the keyhole type, whereby each of the conduits of the aperture supply are connected to the support plate by passing the cavity of the small opening to the large opening and deflecting the shaft upwards to engage with the enlarged head with the support plate. The combination according to claim 6, further characterized in that: a) the enlarged head of each of the supply conduits has a tapered internal opening to increase upwards in diameter; and b) an "O" ring is disposed in each of the internal openings to substantially seal the connection between the key body and the shaft in the openings therein. 8. The combination according to claim 2, further characterized in that: a) at least one locking tab is formed on the shaft; and b) a circumferential cavity is formed on the key body to receive the locking tab therein during the connection of the key body and the shaft. 9. The combination according to claim 8, further characterized in that: a) a pair of connecting arms is formed on the shaft and extends outwardly thereof having each a locking tab formed on them; and b) a pair of circumferential openings is formed in the key body in communication with the cavity therein, to receive the connecting arms axially aligned with the shaft that is inserted therein and rotated to place the locking tabs in place. locking joint in the same cavity. 10. The combination according to claim 9, further characterized in that: a) the retaining ring is broken; b) retaining means are formed on the inner circumference of the retaining ring; and c) coupling grooves are formed corresponding to the retainer means formed on the outer circumference of the key group, whereby upon rotation of the retaining ring the retainer means thereof have to be arranged in coupling slots of the key group. the retaining ring is spliced with the arms to normally prevent the removal of the cavity locking appendages. 11. The combination according to claim 10, further characterized in that: the connecting arms extend through the coupling slits before arranging the locking tabs in the cavity during the relative rotation of the shaft and the key body. . 12. The combination according to claim 11, further characterized in that: a) a pair of ridges is formed adjacent to the coupling slits on one side of the cavity; b) the locking appendages are connected to the shoulders to avoid disconnection between the shaft and the key body. 13. The combination according to claim 12, further characterized in that: a) a platform is formed on the key body next to the cavity opposite the shoulders; b) the retaining ring has a pair of arm cavities available radially outwardly from the coupling slots to allow the connecting arms to be inserted into the coupling slots and the platform to limit the axial insertion thereof; c) the arm cavities are spaced circumferentially from the detents; and d) the detents are normally disposed on the shoulders to extend the diameter of the split retaining ring and with the relative rotation of the shaft and the key body the detents are snapped into the coupling slots and the locking tabs enter with locking to the key body cavity. 14. a mixed member of a mountable key assembly on a horizontal surface, comprising of the mixed member: a) a first body mountable to the horizontal surface; b) a second body fixed to the horizontal surface; c) at least one water supply conduit connected in the second body; d) a first body disposed above the horizontal surface and connectable to the second body; e) having in the first body at least one opening therein so that the water is received and discharged from the key; f) the opening of the first body to be spliced with sealing for the supply conduit during the connection of the first body and the second body; and g) a retaining ring mounted on the first body and the second body to limit relative movement therebetween; 15. The combination according to claim 14, further characterized in that: a) the water supply conduit in the second body includes a cold water supply conduit and a hot water supply conduit; b) each of the supply conduits has an enlarged head; c) a support plate is received removably in the second body; d) a plurality of radiated grooves is formed in the support plate; e) each of the supply ducts is arranged in one of the slots, with the enlarged heads thereof disposed above the support plate and facing outwards; and f) the first body has an opening for cold water and an opening for hot water, each one being connected with sealing by the enlarged head of the respective cold and hot water conduits during the connection of the first body and the second body. 16. The combination according to claim 15, further characterized in that: each of the grooves receiving the water conduits is formed by an opening of the keyhole type. 1

7. The combination according to claim 16, further characterized in that the larger opening of the keyhole type opening is disposed radially outwardly from the smaller opening thereof. 1

8. The combination according to claim 17, further characterized in that: the grooves of the support plate extends radially inwardly from the circumference thereof. 1

9. The combination according to claim 18, further characterized in that: a) at least one locking tab is formed on the second body; b) a circumferential cavity is formed on the first body, to receive the locking tab therein during the connection of the first body and the second body. 20. The combination according to claim 19, further characterized in that: a) a pair of connecting arms is formed and extends outwardly from the second body, each having a locking tab formed thereon; and b) a pair of circumferential openings is formed to the first communicating body with the cavity therein, to receive the connecting arms axially aligned from the second body to be inserted therein and rotated the locking joint in the cavity of the first body. 21. The combination according to claim 20, further characterized in that: a) the retaining ring is broken; b) the detent means are formed on the inner circumference of the retaining ring; and c) the coupling slits to the retainer means are formed on the outer circumference of the first body, whereby during the rotation of the retaining line the retaining means thereof are to be arranged in the coupling slits of the first body , the retaining ring being joined with the arms to normally prevent the removal of the cavity locking appendages. 22. The combination according to claim 14, further characterized in that: a) the first body has an annular platform formed thereon in an end facing a second body; b) a cylindrical projection smaller in size than the platform extends from the platform to said end; c) a pair of arcuate ridges are formed at said end to extend radially outwardly on the platform in spaced relationship with the mass and to form a cavity therebetween; d) a pair of slots is formed on the adjacent cylindrical projection on the shoulders and in communication with the cavity; e) a second body has an end facing the first body and has a pair of arms extending axially therefrom, radially outwardly from the shoulders; f) a pair of locking appendages are formed at the end of the arms to extend radially inward thereof; g) the locking appendages are available in the slits to enter the cavity; h) a split retainer ring has a pair of detents that extends radially inwardly to engage the shoulders and slightly extend the partition of the annulus; i) a pair of arm openings is actually formed outward and opposite the detents, with one of the openings adjacent to the partition; and j) the locking appendages are arranged in the cavity to interlock with the shoulders during the relative rotation of the first body and the second body, whereby the retainer will snap into the slits and the ring will cover the arms to avoid the accidental disassembly of the first and second bodies.