Electrical connector having locking projections

1. A connector to which an object is to be connected, comprising:

an insulator having at least one contact support groove; and

at least one contact which is fixed to said insulator by being inserted into said contact support groove, said contact being contactable with said object after said object is inserted into said insulator,

wherein said insulator includes at least one holding portion formed as one of a recess and a through-hole which is communicatively connected with said contact support groove,

wherein said contact includes a locking protrusion which comes into engagement with said holding portion to hold said contact to said insulator when said contact is inserted into said contact support groove,

wherein a plurality of said contact support grooves are arranged in a predetermined direction,

wherein a plurality of said contacts are inserted into said plurality of contact support grooves, respectively,

wherein a plurality of said holding portions are communicatively connected with said plurality of contact support grooves, respectively, and are provided at alternately different positions in a lengthwise direction of said plurality of contact support grooves to be arranged in a zigzag fashion, and

wherein said locking protrusion is formed on each of said contacts, so that said locking protrusions of said contacts come into engagement with said holding portions when said contacts are inserted into said contact support grooves, respectively, and

wherein a protrusion amount of a peak point of said locking protrusions is less than a depth of said holding portions such that said locking protrusions do not contact an inner surface of said holding portions.

2. The connector according to claim 1 , wherein said locking protrusion protrudes from one of two lateral sides of said contact, and

wherein said holding portion is formed on one of two lateral sides of said contact support groove which faces said one lateral side of said contact.

3. The connector according to claim 2 , wherein said contact comprises:

a first arm and a second arm which face each other with a predetermined distance therebetween; and

a resilient connecting portion which connects said first arm and said second arm to each other,

wherein said connector includes an actuator which moves one end of said second arm toward said inserted object by pressing the other end of said second arm in a direction away from an adjacent one end of said first arm with said object being inserted in between the other end of said first arm and said one end of said second arm.

4. The connector according to claim 1 , wherein a top surface of said locking protrusion faces a top surface of said holding portion while a bottom surface of said contact is in contact with a bottom of said contact support groove.

5. The connector according to claim 1 , wherein said locking protrusion protrudes from one of a top surface and a bottom surface of said contact, and

wherein said holding portion is formed on one of a top surface and a bottom surface of said contact support groove.

6. The connector according to claim 1 , wherein an engaging portion is formed on said contact at a position different from a position of said locking protrusion in a lengthwise direction of said connector,

wherein a surface of said locking protrusion which faces said engaging portion faces an inner surface of said holding portion, and

wherein a surface of said engaging portion which faces said locking protrusion is in contact with said insulator.

7. The connector according to claim 3 , wherein said actuator comprises at least one cam positioned between said adjacent end of said first arm and said other end of said second arm, a movement of said actuator relative to said insulator causing said cam to press said other end of said second arm to thereby move said one end of said second arm toward said other end of said first arm.

8. The connector according to claim 3 , wherein said actuator comprises a pair of pivots which project in opposite directions from laterally opposite ends of said actuator, respectively, wherein said actuator is rotatable about said pair of pivots relative to said insulator.

9. A connector comprising:

an insulator having a plurality of contact support grooves; and

a plurality of contacts which are fixed to said insulator by being inserted into said plurality of contact support grooves, respectively, each of said contacts having two prongs for holding an object which is to be connected to said contact therebetween,

wherein said insulator includes a plurality of locking holes formed in said contact support grooves, respectively, and

wherein each of said contacts includes a locking protrusion which comes into engagement with said locking hole formed in associated one of said contact support grooves when said contacts are inserted into said contact support grooves, respectively,

wherein a plurality of said contact support grooves are arranged in a predetermined direction,

wherein said plurality of said locking holes are communicatively connected with said plurality of contact support grooves, respectively, and are provided at alternately different positions in a lengthwise direction of said plurality of contact support grooves to be arranged in a zigzag fashion,

wherein said locking protrusion is formed on each of said contacts, so that said locking protrusions of said contacts come into engagement with said locking holes when said contacts are inserted into said contact support grooves, respectively, and

wherein a protrusion amount of a peak point of said locking protrusions is less than a depth of said locking holes such that said locking protrusions do not contact an inner surface of said locking holes.