Electrical connectors – Metallic clamp-type connector for storage battery terminal – Clamping lever – cam – or wedge
Patent
1996-04-29
1998-10-20
Bradley, P. Austin
Electrical connectors
Metallic clamp-type connector for storage battery terminal
Clamping lever, cam, or wedge
H01R 450
Patent
active
058238310
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
(1) Field of the Invention
The present invention relates to a battery terminal connector.
(2) Prior Art
Battery leads for vehicle batteries are normally fixed to terminals of the battery using clamps which have screws that act to open or close the clamps. Whilst the terminal clamps provide a secure and good electrical contact with the battery terminals for the leads, a tool is required to remove and attach the clamps and the connection and disconnection process is cumbersome. This is disadvantageous for a number of reasons, such as the following: the accumulation of corrosive material which prevents the electrical connection between the terminals and the leads being maintained, and can also damage the terminals. This is discouraged by clamps which are difficult to remove and reconnect. a vehicle battery. The battery needs to be removed from a vehicle for use with the equipment, yet this becomes a significant annoyance when the equipment is moved frequently. Also if the necessary tool is mislaid during a trip, then the battery can no longer be removed. the battery or perform maintenance in situations where the necessary tool is not available or is difficult to use. For example, maintenance or removal of a battery may need to be affected on the side of a road at night without adequate lighting.
Accordingly a battery terminal connector which can be removed and connected securely without a tool and is simple both in use and in construction, is required.
SUMMARY OF THE INVENTION
In accordance with the present invention there is provided a battery terminal connector comprising: the connector to said terminal.
Advantageously, in the preferred embodiment, the cam shaft on rotation between an unlock and lock position pulls said body downwards onto said terminal and moves across said terminal to lock said connector to said terminal.
BRIEF DESCRIPTION OF THE INVENTION
A preferred embodiment of the present invention is hereinafter described, by way of example only, with reference to the accompanying drawings, wherein:
FIG. 1 is an exploded view of a preferred embodiment of a battery terminal clamp;
FIG. 2 is a plan view of the battery terminal clamp;
FIG. 3 is a side view of the battery terminal clamp; and
FIG. 4 is an end view of the battery terminal clamp.
DETAILED DESCRIPTION OF THE INVENTION
A battery terminal clamp 2, as shown in the Figures, includes a body 4, a cam shaft 6, lever 8, a screw 10 and a nut 12 with a left hand thread. The body 4 comprises a rectangular block 14 with a central hole 16, and a protruding part 18 which is bored at its end face 20 so as to form a lead hole 22 for receiving the end of a battery lead 24 within the body 4. The end of the battery lead is clamped to the protruding part 18 of the body 4 by the screw 10 which can be screwed within a threaded bore 26 which extends between a side of the protruding part 18 and the lead hole 22. The screw 10 is an M6 hexagonal HD bolt screw. The central hole 16 extends between the top and bottom of the body 4.
The projecting part 18 further includes a M8 threaded stud 19 mounted on top of the part 18, as shown in FIGS. 2 to 4, and a wing nut 21 can be screwed onto the stud 19 so as to clamp accessory leads to the body 4, as desired.
The cam shaft 6 has a lever arm 8 attached to one end and at the other end includes an M8 left hand thread 28. Near the end of the body 4 opposite the protruding part 18, a stepped bore 30 extends between the sides of the body 4 and through a segment 32 of the hole 16. The bore 30 is cut so as to receive the cam shaft 6 from one side and the nut 12 from the other, with the thread 28 of the cam shaft 6 being received by the nut 12. The nut 12 is a hexagonal nut with an M8 left hand thread. The bore 30 allows the cam shaft 6 to be screwed into the nut 12 whilst the nut 12 remains in position. The shaft 6 includes a recessed cam part 34 which when inserted into the bore 30 is aligned with the centre of the hole 16. The cam part 34 includes an eccentric surface which has a major recess
REFERENCES:
patent: 2045590 (1936-06-01), Emery
patent: 4555159 (1985-11-01), Chartrain et al.
patent: 4695118 (1987-09-01), Magdesyan et al.
Bowater Barry Thomson
Owen Garry John
Bradley P. Austin
Standig Barry M. L.
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