Wall bushing plug connector and fastening element for it

1. A wall bushing plug connector which is to be led through and latched in a wall cutout in a housing wall comprising:

an insulating material housing;

two sprung fastening latching arms which are arranged so as to spring outward on mutually opposite sides of the insulating material housing in opposite directions, and have at least one latching edge for latching to the housing wall; and

mutually opposite clamping contact sections,

wherein the two sprung fastening latching arms are integrally formed on a support section opposite a free end of each of the two sprung fastening latching arms, the two sprung fastening latching aims each having:

two spring bows spaced apart from each other so as to leave a clearance; and

two limbs each adjoining one of the two spring bows, and the two limbs merging with the free end of at least one of the two sprung fastening latching arms by way of a crossmember,

wherein the clearance accommodates a retaining section of a mating plug connector configured to be plugged onto the wall bushing plug connector for connection to connection contacts.

2. The wall bushing plug connector as claimed in claim 1 further comprising:

fastening elements provided separately from the insulating material housing, said fastening elements each having a support section, and a fastening latching arm which is integrally formed on said support section,

wherein the fastening elements and the insulating material housing having plug sections which are matched to one another so as to interengage in order to plug-connect a one of the fastening elements to an associated side wall of the insulating material housing.

3. The wall bushing plug connector as claimed in claim 2 , wherein the plug sections have latching holes and/or projecting latching pins.

4. The wall bushing plug connector as claimed in claim 1 further comprising:

a rest for resting on a wall region which adjoins the wall cutout and extends away from the support section adjacent to the free end of one of the two sprung fastening latching arms.

5. The wall bushing plug connector as claimed in claim 1 , wherein the clearance is formed such that a fastening section which is accommodated in the clearance and holds one of the two sprung fastening latching arms in a latching position.

6. A fastening element for fastening a wall bushing plug connector in a wall cutout in a housing wall comprising:

a support section with an abutment surface with plug sections for butting against a side wall of an insulating material housing of the wall bushing plug connector and for engaging in the plug sections of the insulating material housing, and

a sprung fastening latching arm having a free end which has at least one latching edge for latching to the housing wall and is integrally formed on the support section opposite the free end,

wherein the sprung fastening latching arm is formed by a pair of spring bows distant from each other and integrally formed on the support section, and

wherein the clearance is provided between said pair of spring bows,

wherein the sprung fastening latching arm has a pair of limbs each adjoining one of said pair of spring bows, and the pair of limbs merging with the free end of the sprung fastening latching arm by way of a crossmember.

7. The fastening element as claimed in claim 6 , wherein the clearance is intended to accommodate a fastening section of a mating plug connection configured to be plugged onto the plug connector for connection to connection contacts, said fastening section holding the fastening latching arm in a latching position.

8. The fastening element as claimed in claim 6 , wherein the plug sections have latching holes and/or projecting latching pins.

9. The fastening element as claimed in claim 6 further comprising:

a rest for resting on a wall region which adjoins the wall cutout and extends away from the support section so as to adjoin the free end of the sprung fastening latching arm.