Assembly for securing a slide-in unit, mounting cage and mounting method

The invention relates to an assembly for securing a slide-in unit in a mounting cage of a computer system. The mounting cage has a first side panel and a second side panel opposite the first side panel. The first side panel has at least one engagement element for engaging into a lateral fastening opening of the slide-in unit. The first side panel and the second side panel are arranged at a distance to one another such that the slide-in unit can be inserted into the mounting cage past the engagement element. After the insertion, a fastening element secured to the second side panel cooperates with the slide-in unit in such a way that the slide-in unit is pushed in the direction of the first side panel and the engagement element engages in the respective lateral fastening opening of the slide-in unit.

The invention relates to an assembly for securing a slide-in unit in a mounting cage of a computer system. Furthermore, the invention relates to a mounting cage for such an assembly as well as to a mounting method for such an assembly.

Assemblies for securing slide-in units of a computer system are known from the prior art. For example, DE 102 13 526 A1 discloses an assembly with holding rails which allow easy and fast installation or deinstallation of drives in a computer housing.

One object underlying the present invention is to provide a concept for an assembly for securing a slide-in unit, which contributes to a simple structure and high mechanical stability.

Disclosed is an assembly for securing a slide-in unit in a mounting cage of a computer system. The mounting cage has a first side panel and a second side panel opposite the first side panel. The first side panel has at least one engagement element for engaging into a lateral fastening opening of the slide-in unit. The first side panel and the second side panel are arranged at a distance to one another and formed such that the slide-in unit can be inserted into the mounting cage past alongside the engagement element. After the insertion, a fastening element secured to the second side panel cooperates with the slide-in unit in such a way that the slide-in unit is pushed in the direction of the first side panel and the engagement element engages into the corresponding lateral fastening opening of the slide-in unit.

For example, the mounting cage is understood to be part of a housing unit of the computer system comprising at least the first and second side panel. Alternatively, the mounting cage is a separate housing unit that can be mounted in the housing of the computer system. Alternatively, the mounting cage per se may be the housing of the computer system or be a part of walls of the housing of the computer system.

The slide-in unit is a storage drive such as a hard disk drive, for example. Alternatively, other drives such as optical drives are conceivable for storage media.

The fastening element can be arranged at the second side panel prior to or after inserting the slide-in unit into the mounting cage. After insertion of the slide-in unit, the (arranged) fastening element is being brought into engagement with the slide-in unit in such a way that this unit per se is mechanically secured to the mounting cage in a reliable fashion via the engagement element of the first side panel and the fastening element. In other words, the slide-in unit is reliably held and fixed in the position thereof via the engagement element and the fastening element. The fastening element is a counter bearing for the engagement element, for example. For example, the engagement element is a screw such as a headless screw or a rivet. The fastening element cooperates with the slide-in unit for securing in a form-fit and/or force-fit manner, for example. For example, the fastening element engages a fastening opening of the slide-in unit correspondingly assigned to the second side panel. By means of the fastening element, optionally the slide-in unit is pushed against the engagement element in such a way that the unit is held at the mounting cage by the virtue of tension, e.g. pressed between the fastening element and the engagement element.

The distance of the first side panel to the second side panel is dimensioned such that the slide-in unit does not collide with the engagement element while being inserted into the mounting cage. In other words, the distance is equal to or greater than a total width of the slide-in unit and the engagement element.

The engagement element is a pin-type element, for example, which protrudes from the first side panel in the direction of the second side panel from the first side panel. The engagement element is formed integrally with the first side panel, for example. For example, the engagement element is formed from the first side panel by means of a deforming method such as embossing. Alternatively, the engagement element is a separate element, which is secured to the first side panel, riveted for example.

The described assembly can be manufactured in a cost-efficient manner and allows a simple and fast mounting process. In particular, the mounting cage can be produced in a cost-efficient manner, for example from a metal sheet, without additional components such as plastics or holding rails. Merely one fastening element for finally securing the slide-in unit in the mounting cage is required as an additional component. Furthermore, the assembly allows a rigid mounting process of the mounting unit with low vibration.

For securing purposes, the slide-in unit is inserted in a predefined or predetermined position in the mounting cage, so that at least the engagement element is arranged flush with the corresponding lateral fastening opening. Optionally, a stop element is provided at the mounting cage, which limits the insertion of the slide-in unit so that the predetermined position is taken. For example, the stop element is part of the first side panel and/or the second side panel or another additional side wall of the mounting cage.

According to one configuration, the first side panel and the second side panel each comprise a guidance, by means of which the slide-in unit can be inserted into the mounting cage. The guidance allows a reliable, guided insertion of the slide-in unit into the mounting cage. For example, the guidances comprise one or multiple guide elements and/or support elements. For example, the guidances are formed as link guides such as rail guides or C-profiles. This allows pushing the slide-in unit into the mounting cage in a form-fit manner.

According to another configuration, the second side panel comprises a thread, in which the fastening element is received. The fastening element is arrangeable at the second side panel of the mounting cage via the thread. Furthermore, the thread allows for the fastening element to be screwable for cooperation with the slide-in unit.

According to another configuration, a threaded sleeve is arranged at the second side panel, which comprises the thread. The threaded sleeve is configured to receive the fastening element. For example, the threaded sleeve is riveted with the side panel. Alternatively, the threaded sleeve is secured to the second side panel in another manner. For example, an opening is formed in the second side panel, to which the threaded sleeve is arranged in a flush manner, so that the fastening element may pass through the opening for cooperation with the slide-in unit.

According to another configuration, the engagement element has a mandrel-type design. In other words, the engagement element is formed as a mandrel or retainer mandrel and comprises a conical tip. This enables a reliable engagement into a corresponding lateral fastening opening of the slide-in unit when securing the fastening element. In particular, the mandrel-type engagement element allows centering the slide-in unit when securing the fastening element to the second side panel. Moreover, production tolerances can be compensated.

According to one configuration, the fastening element engages into a corresponding lateral fastening opening of the slide-in unit. The engagement is effected in a form-fit and/or force-fit manner, for example. For example, it is not necessarily required for the fastening element to be screwed into a thread of the corresponding lateral fastening opening. For example, the fastening element is screwed into the corresponding lateral fastening opening of the slide-in unit for the cooperation or interaction with the latter. By virtue of the engagement into a lateral fastening opening of the slide-in unit, the fastening element mechanically cooperates with slide-in unit in an especially reliable manner for securing this unit.

According to another configuration, the fastening element is a knurled screw. This facilitates a mounting, and, in particular, enables mounting without the use of tools.

Optionally, the knurled screw is additionally provided with a slotted or cross-slotted head. As a result, the knurled screw can be secured both without tools and using tools such as a screwdriver. This allows mounting the assembly in a rapid and efficient manner on the side of the manufacturer in production using corresponding tools, for example, while it is not necessarily required for a customer to have a tool available for the mounting process or dis-mounting process of the slide-in unit.

According to another configuration, the knurled screw is formed in the type of a mandrel at one end assigned to the slide-in unit. In other words, the knurled screw tapers at this end. This results in essentially the above-mentioned advantages with respect to the engagement element.

In another configuration, the first side panel comprises two such engagement elements, and two such fastening elements are provided at the second side panel. As a result, the slide-in unit can be connected at four points to the mounting cage in a fixed and especially reliable manner. This influences the vibration behavior in a particularly positive way in particular when all engagement and fastening elements are formed in the type of a mandrel.

Furthermore, a mounting cage for the above described assembly is disclosed. The mounting cage comprises a first side panel and a second side panel opposite the first die panel. The first side panel has at least one engagement element for engaging into a lateral fastening opening of a slide-in unit. The first side panel and the second side panel are arranged at a distance to one another in such a way that the slide-in unit can be inserted into the mounting cage past the engagement element. Furthermore, the second side panel comprises a means which is configured to receive a fastening element for cooperation with the slide-in unit.

For example, the means is a thread or a threaded sleeve, into which the fastening element can be screwed.

The mounting cage essentially enables the above-mentioned advantages and functions. The mounting cage can be formed or designed in accordance with the above-described configurations.

Furthermore, a mounting method for an above-described assembly is described. The mounting method comprises the steps of:Providing the mounting cage and the slide-in unit;Inserting the slide-in unit into the mounting cage past the engagement element;Securing a fastening element at the second side panel in such a way that this element cooperates with the slide-in unit so that the slide-in unit is pushed in the direction of the first side panel and the engagement element engages in a corresponding lateral fastening opening of the slide-in unit.

The mounting method enables essentially the above-described advantages.

Further advantageous embodiments are disclosed in the following detailed description of an exemplary embodiment.

FIG. 1shows a mounting cage2for receiving at least one slide-in unit3, as exemplified inFIG. 2. The slide-in unit3is a storage drive, in particular a hard disk drive. However, other drives or storage media are conceivable as slide-in unit3.

The mounting cage2is made of a metal sheet and comprises a first side panel4as well as an opposite second side panel5. In each case one guidance7is provided at the first side panel4as well as the second side panel5, which is in each case formed of multiple lugs8. The lugs8are embossed from the respective side panel4or5, respectively. The guidances7may also be designed differently, e.g. as rail guidances, link guidances, C-profiles or the like.

At the first side panel4, two engagement elements6are embossed from the first side panel4in the region of the guidance7. The engagement elements6are formed in the type of a mandrel and have a conically tapering tip. The engagement elements6may also be referred to as retainer mandrels. The engagement elements6are directed in the direction of an interior of the mounting cage2. In other words, the engagement elements point in the direction of the second side panel5. Threaded sleeves10are secured to an outer side of the second side panel5, which are substantially arranged to be in each case opposite one engagement element6.

The mounting cage2comprises two stop elements9, which are in each case integral with a side panel4or5, respectively. InFIG. 1, the stop element9arranged at the second side panel5is covered and thus not illustrated. The stop elements9are made in the form of bent wall lugs. Alternatively or additionally, other stop elements, e.g. separate elements such as protrusions, pins or bolts, or molded or deformed stop elements such as embossed elements are conceivable.

Except for the threaded sleeves10, all of the described elements of the mounting cage2are formed in one piece in deforming methods such as embossing, bending or punching.

It is pointed out that even a housing base12of the mounting cage2can serve as a guidance in place of the guidances7(seeFIG. 1the engagement elements6and threaded sleeves10assigned to the housing base12).

The mounting cage2is formed to receive the slide-in unit3according toFIG. 2so that the unit can be secured to the mounting cage2in a reliable manner. The slide-in unit3comprises lateral fastening openings11at opposite sides13, respectively. Each of the two sides13is assigned to one of the two side panels4and5, respectively, of the mounting cage2.

The mounting process of the slide-in unit3in the mounting cage2will hereinafter be described using the flow diagram of a mounting method schematically illustrated inFIG. 8.

In a first step S1and a second step S2, the mounting cage2shown inFIG. 1or the slide-in unit3shown inFIG. 2are provided. The steps S1and S2can also be performed the other way around.

In a further step S3, the slide-in unit3is inserted into the mounting cage2using the guidances7. The insertion is effected in an insertion direction14(seeFIG. 14). The slide-in unit3is inserted all the way until bearing against the stop elements9.

This mounting state is shown inFIG. 3, which shows an assembly1with a mounting cage2and the slide-in unit3in a side view (normal to the insertion direction14). A distance15between the two side panels4and5is dimensioned such that the slide-in unit3can be inserted into the mounting cage2past the engagement elements6. In other words, a distance16between the first side panel4and the side13of the slide-in unit3facing the first side panel4is greater than a point of the engagement elements6located the farthest away from the first side panel4. Preferably, the slide-in unit3is inserted into the mounting cage2while butting against the second side panel5of said cage (see arrow21). This ensures that the slide-in unit3will not collide with the engagement elements6and be damaged in the worst case.

Furthermore, knurled screws17are illustrated inFIG. 3, which are at least partially screwed into the corresponding threaded sleeves10and are thus arranged at the second side panel5. The knurled screws17are fastening elements.

FIG. 4shows such a knurled screw in a perspective view by way of example. The knurled screw comprises a thread18as well as a mandrel19at a free end. At an end opposite the mandrel19, the knurled screw17is provided with a cross-slot for receiving a tool, in particular a screwdriver.

After the insertion, according to the step S3, the knurled screws17are secured or seized in a step S4in such a way that they engage with the mandrel19into the corresponding lateral fastening openings11of the slide-in unit3, and push and press this unit in the direction of the first side panel4(see arrow22). This is shown inFIG. 5, which shows the assembly1in a secured state of the slide-in unit3in a cross-section (normal to the insertion direction14). As a result, the engagement elements6engage into the corresponding lateral fastening openings11of the slide-in unit. In other words, the knurled screws17are screwed in such a way that the slide-in unit3is secured to the mounting cage2via the engagement elements6and the knurled screws17in a secure and fixed manner. When securing or screwing the knurled screws17, these screws pass through corresponding openings assigned to the threaded sleeves10in the second side panel5at least with the free end of the mandrels19, in order to finally engage into the lateral fastening openings. The distance16, illustrated inFIG. 3, between the first side panel4and the slide-in unit3is essentially no longer present or reduced, while a distance23between the second side panel5and the assigned side13of the slide-in unit3is formed.

As illustrated inFIG. 4, a shoulder20, for example in the form of a step, is provided between the mandrel19and the thread18. Thus, each knurled screw17contacts the slide-in unit3while being screwed-in in the peripheral region of the respective lateral fastening opening11. As a result, slide-in unit3can be secured in a particularly secure manner, particularly achieving a favorable force transmission for pushing the slide-in unit3in the direction of the first side panel4.

FIGS. 6 and 7show detailed views A and B ofFIG. 5in a cross-sectional view.FIG. 6illustrates how an engagement element6engages into the corresponding lateral fastening opening11of the slide-in unit. In analogy to this,FIG. 7shows how the mandrel19of the knurled screw17is arranged in the corresponding lateral fastening opening11of the slide-in unit. The slide-in unit3is securely held via the mandrel-type design of the engagement elements6and the knurled screws17. The mandrel-type designs ensure a secure insertion of the engagement elements6or of the knurled screws17into the respective lateral fastening openings11of the slide-in unit3. The respective engagement is effected in a form-fit manner. A screw-type engagement into a possibly present internal thread of each lateral fastening opening11does not take place.

The described assembly1can be mounted and dismounted without tools. The assembly1can be produced and mounted in a simple, fast and cost-efficient manner. Furthermore, a rigid, low-vibration fastening of the slide-in unit3can be achieved by seizing the knurled screws17.

In not-illustrated exemplary embodiments, only one knurled screw17is used instead of two knurled screws17. This screw is screwed into the fastening opening11of the slide-in unit3, which is provided in the center at a side13, for example (seeFIG. 2).

In further not illustrated exemplary embodiments, another type of screw is used in place of the knurled screws17, e.g. headless screws with or without knurling.

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