JPH0132887Y2 - - Google Patents

Description

[Detailed description of the invention] The applicant of the present invention has developed a backpack in which additional members such as a shelf-forming part are detachably attached to the frame body as shown in Japanese Utility Model Publication No. 51-5357. Since the U-shaped plate spring is fitted to the attachment part of the additional member to the frame body, the structure is complicated and failures are likely to occur.

Also, as a mounting mechanism for such an additional member, structures described in Utility Model Application Publications No. 51-32372 and No. 48-70925 are also known; Since the latter has a configuration in which the additional member is twisted perpendicular to the axial direction of the fitting part, it cannot be used in the present invention for fitting pipe-shaped bodies together. The structure of the present invention, in which the member is U-shaped and its both ends are attached to the frame body, could not be adopted.

The purpose of the present invention is to solve such technical problems, and a pair of pipe-shaped sockets 2 equipped with engagement holes 1 are provided on the side of the backpack frame main body 3, and a U-shaped A pipe-shaped insertion port 5 made of elastic plastic that can be inserted into and removed from the socket 2 is formed at both ends of an additional member such as a shelf-forming member 4 exhibiting a Deep cuts 6, 6' are cut, and the part sandwiched by the cuts 6, 6' is an elastic piece 7, and on the outer surface of the tip of this elastic piece 7, the tip side wall surface is made into an inclined surface 8'. The engaging protrusion 8
In addition, the elastic piece 7 is attached to the outer surface of the elastic piece 7 at a required location.
A push button 9 is provided for pushing and bending inward, and when the insertion port 5 is pushed into the socket 2, the engagement protrusion 8 moves into the engagement hole 1.
When the push button 9 is pressed, the engagement protrusion 8 is disengaged from the engagement hole 1 and the insertion port 5 is removed. The gist of this is to make it possible.

In the illustrated embodiment, wheels 10 and 10' are supported on the lower part of a metal pipe frame body 3 for backpack carriers equipped with a removable shoulder strap (not shown), and wheels 10 and 10' are supported on the upper side of the frame body 3. A towing handle 11 is attached which is in a used state when pulled upward and becomes unused when returned, and a bottom support member 12 is provided on the rear side of the lower side of the frame main body 3 so that it can be raised and lowered between upward and sideways. Also, the leg member 1 that lands on the tip side of this bottom support member 12 when lying down
3 are attached in a foldable manner, and a pipe-shaped socket 2 made of hard plastic with a pair of engagement holes 1 is provided at a mid-height position between the vertical ribs 14 and 14' on both the left and right sides of the frame body 3. Mounting bracket 15, center shaft 1
6 and mekugi 17 so that it can be raised and lowered between upward and sideways, and separate from this, a metal pipe is bent to form a U-shaped shelf-forming member 4. A pipe-shaped insertion port 5 made of elastic hard plastic that can be inserted into and removed from the socket 2 is attached to both ends of the member 4 with a peg 18, and a pair of deep notches 6, 6 are formed at the tip edge of the insertion port 5. ' are cut up to two pairs, and the part sandwiched by the cuts 6, 6' is an elastic piece 7, and the outer surface of the tip of this elastic piece 7 is an engaging protrusion whose tip side wall surface is an inclined surface 8'. 8 is also integrally provided with a push button 9 for pushing and bending the elastic piece 7 inward on the outer surface of the base end portion, so that when the insertion port 5 is pushed into the socket 2, the engagement protrusion 8 is inserted into the engagement hole 1. It is locked so that the insertion port 5 cannot be removed and the additional member is in the attached state, and when the push button 9 is pressed, the engagement protrusion 8 comes off from the engagement hole 1 and the insertion port 5 can be removed. It is designed so that the state is as follows.

Since the present invention has the above-mentioned configuration, it is of course extremely convenient that additional members such as the shelf-forming member 4 can be freely attached and detached. A shelf forming member 4 exhibiting
A pipe-shaped insertion port 5 made of elastic plastic that can be inserted into and removed from the socket 2 is formed at both ends of the additional member, and a pair of deep notches 6 and 6' are formed at the tip edge of the insertion port 5. The part sandwiched between the notches 6 and 6' is made into an elastic piece, and on the outer surface of the tip of this elastic piece 7, there is an engaging protrusion 8 whose tip side wall surface is an inclined surface 8'. Buttons 9 for pushing and bending the elastic pieces 7 inward are provided on the outer surface of the elastic pieces 7 at required locations, respectively, and when the insertion opening 5 is pushed into the pipe-shaped socket 2 provided on the frame body, the engagement protrusion 8 engages. The insertion port 5 is locked in the hole 1 so that it cannot be removed and the additional member is in the attached state, and when the push button 9 is pressed, the engagement protrusion 8 comes out of the engagement hole 1 and the insertion port 5 is locked. Since it is made to be in a removable state, the fitting mechanism between the additional members such as the shelf-forming member 4 and the frame main body is extremely simple and strong, and the operation is simple and reliable. This has the effect of sufficiently solving the above technical problem.

[Brief explanation of drawings]

The figures show an embodiment of the backpack frame of the present invention, in which Fig. 1 is a perspective view showing the whole, Fig. 2 is an enlarged side view showing the main parts removed, and Fig. 3 is Fig. 2A. - It is a sectional view shown in an inserted state along the A line. DESCRIPTION OF SYMBOLS 1... Engagement hole, 2... Socket, 3... Frame main body, 4... Shelf-shaped part forming member, 5... Insertion port, 6,
6'...notch, 7...elastic piece, 8...engaging protrusion,
8'... Inclined surface, 9... Push button, 10, 10'... Wheel, 11... Traction handle, 12... Bottom support member,
13... Leg member, 14, 14'... Vertical bone, 15...
...Mounting bracket, 16...Center shaft, 17...Mekugi, 1
8... Mekugi.

Claims (1)

[Scope of utility model registration request] A pair of pipe-shaped sockets 2 with engagement holes 1 are provided on the side of the backpack frame main body 3, and the sockets 2 are provided at both ends of additional members such as the U-shaped shelf-forming member 4. A pipe-shaped insertion opening 5 made of elastic plastic that can be inserted and removed is formed inside the insertion opening 5, and a pair of deep notches 6 and 6' are cut at the tip edge of this insertion opening 5. The sandwiched portion is an elastic piece, and an engaging protrusion 8 whose tip side wall surface is an inclined surface 8' is provided on the outer surface of the tip of the elastic piece 7, and an engaging protrusion 8 is provided on the outer surface of the elastic piece 7 at a predetermined location. When the insertion port 5 is pushed into the socket 2, the engagement protrusion 8 is locked in the engagement hole 1, so that the insertion port 5 cannot be removed and the additional member is attached. The backpack frame is characterized in that when the push button 9 is pressed, the engagement protrusion 8 is disengaged from the engagement hole 1 and the insertion port 5 becomes removable.