Massage roller
The present invention provides a massage roller which comprises a soft shell, a core member, a first blocking member and a second blocking member. The core member is substantially cylindrical and hollow and made of a rigid material. The soft shell is disposed around the core member and made of a flexible material. The first blocking member blocks a front end of the soft shell and has a first extension detachably secured to a front end of the core member. The second blocking member is secured to a rear end of the core member and blocks a rear end of the soft shell. The soft shell and the core member are configured to be axially displaceable relative to each other but not rotatable relative to each other.
1. A massage roller, comprising:
a core member, being substantially cylindrical and hollow, made of a rigid material, and having two or more rails arranged on an outer surface thereof;
a soft shell disposed around the core member, made of a flexible material, and having two or more parallel grooves arranged in an inner surface thereof, and each groove extending from front to rear of the soft shell for engagement with a respective one of the rails of the core member to prevent the soft shell from rotation with respect to the core member;
a closed end cap formed in one piece and detachably secured to a front end of the core member, the closed end cap having a body for closing the front end of the core member, an axial extension for connection with the front end of the core member, and a flange portion for abutting against an end surface of a first end of the soft shell when the axial extension is engaged with the front end of the core member; and
a blocking member secured to a rear end of the core member, and having a body for closing the rear end of the core member and a flange portion for abutting against an end surface of a rear end of the soft shell; wherein the flange portions of the closed end cap and the blocking member work together to confine axial movement of the soft shell with respect to the core member.
2. A massage roller of claim 1 , wherein each of the grooves of the soft shell is in a shape of a dovetail.
3. A massage roller of claim 1 , wherein the axial extension of the closed end cap has external threads, and the front end of the core member has internal threads so that the axial extension of the closed end cap is mated with and detachably attached to the front end of the core member.
4. A massage roller of claim 1 , wherein the axial extension of the closed end cap is pressed fit in the core member.