JP2009195417A - Tray presser mechanism in carrier cart - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tray presser mechanism in a carrier cart which does not need a working process about a component, is also easy to assemble, can reduce production costs, and can prevent the rattle and popping out of the tray certainly even if a cart vibrates or the movement inertia and centrifugal force at the time of urgent carrier act. <P>SOLUTION: In the situation that makes an elongated leaf-like retainer plate 3 which consists of flexible material flex and change shape in an arch, a bulging part 32 is formed in between by fixing and hanging both ends 31, 31 on respective retainer groove 22a, 22a which are prepared on the upper guiding member 22 of a guide rail 2 respectively. Additionally, while making this bulging part 32 contact a lower guiding member 21 in a biasing situation, a retaining projection 11a is formed respectively on the upper surface in both ends of a flange part 11. It is organized so that the retainer plate 3 concerned flexes and changes shape responding against lifting action by the retaining projection 11a when this retaining projection 11a passes through the lower surface of the bulging part 32 of the retainer plate 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is an improvement of a transport cart used in a medical field, and more specifically, does not require processing steps for components, can be easily assembled and can reduce manufacturing costs, and the cart can be vibrated or urgently transported. The present invention relates to a tray holding structure in a transport cart that can reliably prevent rattling and jumping out of a tray even when a moving inertia or centrifugal force is applied.

  As is well known, in a medical site such as a hospital, a transport cart having a plurality of trays is used for transporting medicines and the like, which acts at the time of moving inertia and direction change during emergency transport. There was a risk that the tray would rattle due to centrifugal force or vibration, making noise, or coming out.

  Therefore, conventionally, a structure has been disclosed in which a bent spring is provided on the rail portion in which the tray is accommodated, and the slide is regulated by urging the tray to prevent noise and slipping out due to vibration. (See Patent Document 1).

  However, in such a structure, in order to impart a repulsive force, since the leaf spring is bent, the biased part must be formed into a curled shape through processes such as press molding and rolling, There was a problem that the processing cost was increased.

In addition, a metal material is often used as the elastic member of the leaf spring member, and the rigidity of the elastic member is large, so that there is a problem that the sliding portion between the members wears.
JP-A-8-214966 (page 3-5, FIG. 7-9)

  The present invention has been made in view of the above-described problems in the structure of a conventional transport cart, and the object of the present invention is to assemble without requiring processing steps for components. Tray in a transport cart that can easily reduce manufacturing costs and reliably prevent rattling and popping out of the tray even if the cart vibrates or is subject to moving inertia or centrifugal force during emergency transport. It is to provide a holding structure.

  Means employed by the present inventor for solving the above-described problems will be described with reference to the accompanying drawings.

That is, the present invention relates to a transport cart in which a tray 1 capable of storing articles is detachably disposed.
A flange 11 is formed on the periphery of the opening of the tray 1 and the flange 11 is slid onto the lower guide members 21 of the pair of left and right guide rails 2 disposed on the side surfaces of the cart body. While supporting freely,
At both ends of the lower guide member 21, stopper projections 21 a that can stop each end of the flange portion 11 are formed, respectively.
In the state where the elongate spring plate-like holding plate 3 made of a flexible material is bent and deformed into an arcuate shape, both the end portions 31 and 31 are respectively provided in the latching grooves 22a provided on the upper guide member 22 of the guide rail 2. The bulging portion 32 is formed in the middle by being fixed to and suspended on 22a, and the bulging portion 32 is brought into contact with the lower guide member 21 in a biased state,
Retaining protrusions 11a are formed on the upper surfaces of both end portions of the flange portion 11, and when the retaining protrusions 11a pass through the lower surface of the bulging portion 32 of the retaining plate 3, the retaining plate 3 is prevented from being removed. While bending and repelling the push-up action by
When the tray 1 is stored in the guide rail 2, the upper surface of the flange portion 11 is urged by the bulging portion 32 of the holding plate 3 to suppress the play at the time of conveyance, and the flange portion 11 By adopting technical means that each end is accommodated inside the stopper projections 21a and 21a, the tray pressing structure in the transport cart is completed.

  Moreover, in order to solve the said subject, in addition to the said means as needed, this invention forms the anchor convex part 31a in the edge part 31 of the holding | suppressing plate 3, while this anchor convex part 31a is used as the guide rail 2 The technical means of enabling the fitting to the retaining groove 22a is adopted.

  Furthermore, in order to solve the above-mentioned problems, the present invention is provided with a retaining protrusion 11a of the flange portion 11 of the tray 1 at the end portion of the upper guide member of the guide rail 2 in addition to the above means as necessary. The technical means of preventing the tray 1 from popping out by being hooked on the hooking protrusion 22b was adopted.

  Furthermore, in order to solve the above-described problems, the present invention forms a convex portion 22c for preventing the back plate 3 from being warped in the upper guide member 22 of the guide rail 2 in addition to the above means as necessary. The technical means was adopted.

  Furthermore, in order to solve the above-described problems, the present invention employs technical means in which the pressing plate 3 is made of a synthetic resin material in addition to the above means as necessary.

In the present invention, in a transport cart in which a tray capable of storing articles is detachably disposed, a flange portion is formed on the periphery of the opening of the tray, and the flange portion is formed on a side surface portion of the cart body. Stopper protrusions that can be slidably supported on the lower guide members of a pair of left and right guide rails that are respectively disposed, and at which both ends of the flange portion can be bumped at both ends of the lower guide member In the state where the elongate spring plate-shaped presser plate made of a flexible material is bent and deformed into an arcuate shape, both end portions are respectively provided in the respective engaging grooves provided in the upper guide member of the guide rail. By fixing and hanging, a bulging portion is formed in the middle, and this bulging portion is brought into contact with the lower guide member in a biased state, while the upper surface at both ends of the flange portion is softened. By respectively to form a retaining projection,
When the retaining projection passes through the lower surface of the bulging portion of the retainer plate, the retainer plate is flexed and deformed while repelling the pushing-up action of the retainer projection, and the tray is stored in the guide rail. By urging the upper surface of the flange portion by the bulging portion of the pressing plate, it is possible to suppress backlash during conveyance, and each end portion of the flange portion can be accommodated inside the stopper projection.

  Therefore, by using the tray holding structure in the transport cart of the present invention, the plate-like flexible member is used as it is, and the buckling phenomenon of this material is skillfully used to obtain the urging force due to the restoration. Can do.

  And it doesn't require processing steps for the components, it is easy to assemble and the manufacturing cost can be reduced. Even if the cart vibrates, the moving inertia or the centrifugal force during emergency transportation is applied, Since the pop-out can be surely prevented, it can be said that there is a very high practical utility value.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention will be described in more detail with reference to the drawings specifically shown as follows.

  An embodiment of the present invention will be described with reference to FIGS. In the figure, what is indicated by reference numeral 1 is a tray. The tray 1 is made of a plastic material and is a container that can store articles such as medicines and medical instruments. Molded.

  Further, what is indicated by reference numeral 2 is a guide rail, and this guide rail 2 is a member in which a lower guide member 21 and an upper guide member 22 are arranged in parallel in the horizontal direction. The side guide member 21 and the upper guide member 22 are projected from the plate material and are integrally formed of a plastic material.

  Furthermore, what is indicated by reference numeral 3 is a presser plate, and this presser plate 3 is an elongated flat spring plate member made of a flexible material. In this embodiment, the flexible material can be made of a synthetic resin material. For example, an elastomer material such as olefin, styrene, vinyl chloride, urethane, polyester, or polyamide can be used. preferable.

  Therefore, the tray holding structure in the present invention is a structure for preventing rattling or jumping out due to centrifugal force when the tray 1 is moved in a transport cart in which the tray 1 is freely inserted and removed, The configuration is as follows.

  First, a flange 11 is formed on the periphery of the opening of the tray 1, and the flange 11 is placed on the lower guide member 21 of the pair of left and right guide rails 2 disposed on the side surfaces of the cart body. And slidably supported.

  In this embodiment, the side surface portion of the cart body is a frame, and the guide rail 2 is suspended between these columns. A plate is attached to the side surface portion, and the guide rail 2 is attached to the plate. May be fixed.

  Further, stopper projections 21a that can stop the end portions of the flange portion 11 are formed at both ends of the lower guide member 21, respectively.

  The elongate spring plate-like holding plate 3 made of a flexible material is bent and deformed into an arcuate shape, and both ends 31 and 31 are provided on the upper guide member 22 of the guide rail 2 while maintaining the state. It fixes and hangs in each latching groove 22a * 22a (refer FIG. 1).

  In this way, a bulging portion 32 is formed in the middle of the presser plate 3 that is bent and deformed, and this bulging portion 32 is brought into contact with the lower guide member 21 in an urging state (see FIG. 2).

  Further, retaining projections 11a are formed on the upper surfaces of both end portions of the flange portion 11, respectively. Functionally, the retaining projection 11a is provided to prevent the tray 1 from popping out by latching on a retaining projection 22b formed at the end of the upper guide member of the guide rail 2. .

  When the retaining projection 11a passes through the lower surface of the bulging portion 32 of the presser plate 3, the presser plate 3 repels the pushing-up action by the retainer projection 11a, and as the tray 1 is inserted, FIG. To bend and deform as shown in FIG.

  In the present embodiment, the buckling phenomenon of the presser plate 3 is skillfully used and is repeatedly deformed within the elastic region, so that the tray 1 can be reliably urged at any position. In addition, since the biasing pressure on the tray 1 can be appropriately dispersed throughout the member and does not become excessively large, unnecessary wear of the member can be prevented.

  When the tray 1 is stored in the guide rail 2, the upper surface of the flange portion 11 is urged by the bulging portion 32 of the pressing plate 3 as shown in FIG.

  In this way, play at the time of conveyance can be suppressed, and each end of the flange portion 11 can be accommodated inside the stopper projections 21a and 21a (see FIG. 8).

  In addition, in this embodiment, since the force to the outer side direction (longitudinal axis direction of a board | plate body) is applied to the edge part 31 of the holding | suppressing board 3, it has a structure which is hard to come off from the latching groove 22, As shown in FIG. 9, the anchor protrusion 31 a is formed at the end 31, and the anchor protrusion 31 a is fitted into the latching groove 22 a of the guide rail 2, thereby fixing the pressing plate 3 more securely. be able to.

  Further, in this embodiment, when the tray 1 is inserted, the retaining protrusion 11a presses and deforms the pressing plate 3 so that the bulging portion 32 remains in a convex state ( In order to prevent reverse warping, a convex portion 22 c can be formed on the upper guide member 22 of the guide rail 2. The shape of the convex portion 22c can be effectively prevented by reversely warping by forming it into two wavy shapes symmetrically in the left-right direction. Also, as shown in FIG. it can.

  The present invention is generally configured as described above. However, the present invention is not limited to the illustrated embodiment, and various modifications can be made within the description of “Claims”. As long as it is a flexible material, it is not limited to an elastomeric material, and other plastic materials, metal materials, and the like can also be used and belong to the technical scope of the present invention.

It is a partial exploded perspective view showing the pressing structure of the embodiment of the present invention. It is a description front view showing the use condition of the pressing structure of the embodiment of the present invention. It is a description front view showing the use condition of the pressing structure of the embodiment of the present invention. It is a description front view showing the use condition of the pressing structure of the embodiment of the present invention. It is a description front view showing the use condition of the pressing structure of the embodiment of the present invention. It is a description front view showing the use condition of the pressing structure of the embodiment of the present invention. It is a description front view showing the use condition of the pressing structure of the embodiment of the present invention. It is a whole perspective view showing the cart of the embodiment of the present invention. It is explanatory front view showing the modification of the holding | suppressing structure of embodiment of this invention.

Explanation of symbols

1 tray
11 Flange
11a Locking projection 2 Guide rail
21 Lower guide member
21a Stopper protrusion
22 Upper guide member
22a Stop groove
22b Suspension protrusion
22c Convex 3 Presser plate
31 Edge
31a Anchor convex part
32 bulge

Claims (5)

In a transport cart in which a tray 1 capable of storing articles is freely placed and removed,
A flange 11 is formed on the periphery of the opening of the tray 1 and the flange 11 slides on the lower guide member 21 of the pair of left and right guide rails 2 disposed on the side surface of the cart body. While supported freely,
At both ends of the lower guide member 21, stopper projections 21a that can stop each end of the flange portion 11 are formed, respectively.
In the state where the elongate spring plate-like holding plate 3 made of a flexible material is bent and deformed into an arcuate shape, both the end portions 31 and 31 are respectively provided in the latching grooves 22a provided on the upper guide member 22 of the guide rail 2. The bulging portion 32 is formed in the middle by being fixed to and suspended on 22a, and the bulging portion 32 is brought into contact with the lower guide member 21 in a biased state,
Retaining protrusions 11 a are formed on the upper surfaces of both end portions of the flange portion 11. When the retaining protrusions 11 a pass through the lower surface of the bulging portion 32 of the retaining plate 3, the retaining plate 3 is retained. While bending and repelling the push-up action by the protrusion 11a,
When the tray 1 is stored in the guide rail 2, the upper surface of the flange portion 11 is urged by the bulging portion 32 of the holding plate 3 to suppress the play at the time of conveyance, and the flange portion 11 A tray holding structure in a transport cart, wherein each end is accommodated inside stopper protrusions 21a and 21a.   The anchor protrusion 31a is formed at the end 31 of the pressing plate 3, and the anchor protrusion 31a can be fitted in the latching groove 22a of the guide rail 2. Tray holding structure in a transport cart.   The retaining projection 11a of the flange portion 11 of the tray 1 is hooked on the retaining projection 22b formed on the end portion of the upper guide member of the guide rail 2, thereby preventing the tray 1 from jumping out. The tray pressing structure in the transport cart according to claim 1 or 2.   The upper side guide member 22 of the guide rail 2 is formed with a convex portion 22c for preventing a back warp of the pressing plate 3 in the transport cart according to any one of claims 1 to 3. Tray holding structure.   The tray pressing structure in a transport cart according to any one of claims 1 to 4, wherein the pressing plate 3 is made of a synthetic resin material.

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