diff --git a/Assets/VRM10/Runtime/Components/SpringBone/VRM10SpringJoint.cs b/Assets/VRM10/Runtime/Components/SpringBone/VRM10SpringBoneJoint.cs
similarity index 94%
rename from Assets/VRM10/Runtime/Components/SpringBone/VRM10SpringJoint.cs
rename to Assets/VRM10/Runtime/Components/SpringBone/VRM10SpringBoneJoint.cs
index d9889c509..18ae0f25b 100644
--- a/Assets/VRM10/Runtime/Components/SpringBone/VRM10SpringJoint.cs
+++ b/Assets/VRM10/Runtime/Components/SpringBone/VRM10SpringBoneJoint.cs
@@ -8,7 +8,7 @@ using UnityEditor;
 namespace UniVRM10
 {
     [Serializable]
-    public class VRM10SpringJoint : MonoBehaviour
+    public class VRM10SpringBoneJoint : MonoBehaviour
     {
         [SerializeField, Range(0, 4), Header("Settings")]
         public float m_stiffnessForce = 1.0f;
@@ -46,7 +46,7 @@ namespace UniVRM10
             }
         }
 
-        public void Process(Transform center, float deltaTime, List<SpringBoneLogic.InternalCollider> colliders, VRM10SpringJoint tail)
+        public void Process(Transform center, float deltaTime, List<SpringBoneLogic.InternalCollider> colliders, VRM10SpringBoneJoint tail)
         {
             if (m_logic == null)
             {
@@ -73,5 +73,6 @@ namespace UniVRM10
 
             m_logic.Update(center, m_stiffnessForce * deltaTime, m_dragForce, m_gravityDir * (m_gravityPower * deltaTime), colliders, m_jointRadius);
         }
+
     }
 }
diff --git a/Assets/VRM10/Runtime/Components/SpringBone/VRM10SpringJoint.cs.meta b/Assets/VRM10/Runtime/Components/SpringBone/VRM10SpringBoneJoint.cs.meta
similarity index 83%
rename from Assets/VRM10/Runtime/Components/SpringBone/VRM10SpringJoint.cs.meta
rename to Assets/VRM10/Runtime/Components/SpringBone/VRM10SpringBoneJoint.cs.meta
index 0fab6c6f8..1f0db6050 100644
--- a/Assets/VRM10/Runtime/Components/SpringBone/VRM10SpringJoint.cs.meta
+++ b/Assets/VRM10/Runtime/Components/SpringBone/VRM10SpringBoneJoint.cs.meta
@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: 5a7fc353e202e4f44a1025ba6e806262
+guid: 0a942e03b39600e41a1b161e958048f7
 MonoImporter:
   externalObjects: {}
   serializedVersion: 2
diff --git a/Assets/VRM10/Runtime/Components/VRM10ControllerSpringBone.cs b/Assets/VRM10/Runtime/Components/VRM10ControllerSpringBone.cs
index 55861be9a..01cb8f848 100644
--- a/Assets/VRM10/Runtime/Components/VRM10ControllerSpringBone.cs
+++ b/Assets/VRM10/Runtime/Components/VRM10ControllerSpringBone.cs
@@ -32,10 +32,11 @@ namespace UniVRM10
             public List<VRM10SpringBoneColliderGroup> ColliderGroups = new List<VRM10SpringBoneColliderGroup>();
 
             [SerializeField]
-            public List<VRM10SpringJoint> Joints = new List<VRM10SpringJoint>();
+            public List<VRM10SpringBoneJoint> Joints = new List<VRM10SpringBoneJoint>();
 
             Transform m_center;
             List<SpringBoneLogic.InternalCollider> m_colliderList;
+            List<(VRM10SpringBoneJoint, SpringBoneLogic)> m_logics;
 
             public Spring(string name)
             {
@@ -90,7 +91,7 @@ namespace UniVRM10
 
                 {
                     // udpate joints
-                    VRM10SpringJoint lastJoint = Joints.FirstOrDefault(x => x != null);
+                    VRM10SpringBoneJoint lastJoint = Joints.FirstOrDefault(x => x != null);
                     foreach (var joint in Joints.Where(x => x != null).Skip(1))
                     {
                         lastJoint.Process(center, Time.deltaTime, m_colliderList, joint);
@@ -100,6 +101,7 @@ namespace UniVRM10
                 }
             }
         }
+
         [SerializeField]
         public List<Spring> Springs = new List<Spring>();
 
diff --git a/Assets/VRM10/Runtime/IO/Vrm10Exporter.cs b/Assets/VRM10/Runtime/IO/Vrm10Exporter.cs
index 10121ce1a..a0032e254 100644
--- a/Assets/VRM10/Runtime/IO/Vrm10Exporter.cs
+++ b/Assets/VRM10/Runtime/IO/Vrm10Exporter.cs
@@ -299,7 +299,7 @@ namespace UniVRM10
             return shape;
         }
 
-        UniGLTF.Extensions.VRMC_springBone.SpringBoneJoint ExportJoint(VRM10SpringJoint y, Func<Transform, int> getIndexFromTransform)
+        UniGLTF.Extensions.VRMC_springBone.SpringBoneJoint ExportJoint(VRM10SpringBoneJoint y, Func<Transform, int> getIndexFromTransform)
         {
             var joint = new UniGLTF.Extensions.VRMC_springBone.SpringBoneJoint
             {
diff --git a/Assets/VRM10/Runtime/IO/Vrm10Importer.cs b/Assets/VRM10/Runtime/IO/Vrm10Importer.cs
index d818d0779..82fd037fe 100644
--- a/Assets/VRM10/Runtime/IO/Vrm10Importer.cs
+++ b/Assets/VRM10/Runtime/IO/Vrm10Importer.cs
@@ -429,7 +429,7 @@ namespace UniVRM10
                             {
                                 throw new IndexOutOfRangeException($"{index} > {Nodes.Count}");
                             }
-                            var joint = Nodes[gltfJoint.Node.Value].gameObject.AddComponent<VRM10SpringJoint>();
+                            var joint = Nodes[gltfJoint.Node.Value].gameObject.AddComponent<VRM10SpringBoneJoint>();
                             joint.m_jointRadius = gltfJoint.HitRadius.Value;
                             joint.m_dragForce = gltfJoint.DragForce.Value;
                             joint.m_gravityDir = Vector3InvertX(gltfJoint.GravityDir);