Plunger with a quick locking system
AssigneeMultitest Elektronische Systeme GmbH
InventorSimon Murnauer
Life of this patent
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Abstract
The invention relates to a plunger that is used to feed and withdraw an electronic component, in particular integrated circuits, to and/or from a contact device that is connected to a test device. The plunger head can be secured to a base body by a quick locking system. The quick locking system can be placed in a rear-engagement position when the plunger head is rotated in relation to the base body, a position in which the plunger head is axially coupled to the base body.
Claims8
A plunger for feeding and withdrawing an electronic component, in particular integrated circuits, to or from a contact device that is connected to a test device, comprising:
- a plunger retaining part;
- and
- a plunger sliding part that is displaceably guided on the plunger retaining part, and comprises a base body and a plunger head is securable to said base body for retaining a component by negative pressure,
- wherein the plunger head is securable on the base body by a quick locking system which comprises a first locking means disposed on said base body and a second locking means disposed on the plunger head, wherein the first locking means and the second locking means are configured to be brought into a rear-engagement position by rotating the plunger head relative to the base body, in which the plunger head is axially coupled to the base body;
- and
- wherein the first locking means disposed on the base body comprises a ball part protruding in a direction of the plunger head and has at least two axial grooves distributed over a circumference and interposed spherical surface sections and the second locking means disposed on the plunger head has clip elements which are moveable along the axial grooves and which are brought into a position where they engage the spherical surface sections from the rear by rotating the plunger head.
A plunger for feeding and withdrawing an electronic component, in particular integrated circuits, to or from a contact device that is connected to a test device, comprising:
- a plunger retaining part;
- and
- a plunger sliding part that is displaceably guided on the plunger retaining part, and comprises a base body and a plunger head is securable to said base body for retaining a component by negative pressure,
- wherein the plunger head is securable on the base body by a quick locking system which comprises a first locking means disposed on said base body and a second locking means disposed on the plunger head, wherein the first locking means and the second locking means are configured to be brought into a rear-engagement position by rotating the plunger head relative to the base body, in which the plunger head is axially coupled to the base body;
- and
- wherein the first locking means disposed on the base body comprises a ball part protruding in a direction of the plunger head and has at least two axial grooves distributed over a circumference and interposed spherical surface sections and the second locking means disposed on the plunger head has clip elements which are moveable along the axial grooves and which are brought into a position where they engage the spherical surface sections from the rear by rotating the plunger head;
- wherein the base body comprises a base part and a coupling plate which is held floatingly on the base part transversely to an axial direction of the plunger, wherein the first locking means is secured on the coupling plate and the plunger head is connected to the coupling plate by the quick locking system;
- and
- wherein the plunger head comprises at least one centering hole and at least one centering pin protruding in a direction of the plunger head and is secured to the plunger retaining part, wherein centering pin engages in an associated centering hole of the plunger head in a withdrawn position of the plunger sliding part and is out of centering engagement with the plunger head in an advanced position of the plunger sliding part.
Dependencies are inferred from the claim text.