Codeigniter hata

tablo_adi='tbl_araclar'; } //tüm araçlar listeleniyor public function TumAraclar() { return $this->db->get($this->tablo_adi)->result(); } } ?>An uncaught Exception was encountered

Type: RuntimeException
Message: C:xampphtdocscodeigniterapplicationmodels/Araclar_model.php exists, but doesn't declare class Araclar_model
Filename: C:xampphtdocscodeignitersystemcoreLoader.php
Line Number: 340
Backtrace:
File: C:xampphtdocscodeigniterapplicationcontrollersvehi cle.php
Line: 8
Function: model
File: C:xampphtdocscodeigniterindex.php
Line: 315
Function: require_once