JP6021928B2 - Weighing pan support member - Google Patents

Description

  The present invention relates to a support member that supports a weighing pan of a balance, and enables stable mounting on a balance body.

Many electronic scales are configured so that the weighing pan and the weighing pan support member that supports the weighing pan can be removed for cleaning around the weighing pan and maintenance of the balance.
FIG. 21 shows the weighing pan 17, the weighing pan support member 16, and the balance body 11 described in Patent Document 1 below. A load receiving portion 14 protrudes from a hole 15 on the upper surface of the scale body 11, and a screw hole 14 b is provided at the tip of the load receiving portion 14. The weighing pan support member 16 has a hole through which a screw 18 is inserted in the center. The screw 18 inserted through the hole is screwed into the screw hole 14b of the load receiving portion 14 to load the weighing pan support member 16. It fixes to the receiving part 14. The weighing pan 17 is placed on the fixed weighing pan support member 16.

JP 2003-156384 A

  However, the method in which the weighing pan support member is fixed to the load receiving portion with a screw has a drawback that when the user who has removed the weighing pan support member is reassembled, it does not know how much the screw should be tightened. Moreover, in the case of fixing with screws, the screws may loosen, which may hinder weighing work.

  The present invention was devised in view of such circumstances, and provides a weighing pan support member that can be stably fixed to a load receiving portion and that can be understood at a glance that it is fixed in a normal state. The purpose is to do.

The present invention relates to a weighing pan support member that supports a weighing pan by being fixed to a load receiving portion of a balance, and includes a through hole through which a flange portion of a flanged pin fixed to the load receiving portion can be inserted. The upper surface of the weighing pan support member main body comprising a communication hole in which a main body and a long hole with a width through which the flange portion cannot be inserted and a through hole through which the flange portion can be inserted are communicated. A slider that slides upward, and the weighing pan support member body and the slider are mounted on the flanged pin with the through hole and the insertion hole overlapped, and the shaft portion of the flanged pin is inserted on the slider The slider is slid so as to shift the position from the insertion hole to the long hole, and the weighing pan support member main body is fixed to the load receiving portion.
Whether or not the weighing pan support member is stably fixed to the load receiving portion can be determined by the position of the slider.

In the weighing pan support member of the present invention, the flanged pin has a taper on the lower surface of the flange portion that decreases in outer diameter as it goes from the flange portion to the shaft portion, and the communication hole of the slider is an insertion hole. And a narrow portion having a width narrower than that of the long hole. When the slider is slid and the flanged pin is passed through the narrow portion, the slider is pressed downward by the taper and elastically deformed.
In order to pass through the narrow portion of the flanged pin, a force that overcomes the repulsive force of the slider is required. Therefore, the weighing pan support member main body fixed to the load receiving portion continues to be fixed to the load receiving portion in a stable state unless a force overcoming the repulsive force of the slider is applied to the slider.

In the weighing dish support member of the present invention, the weighing dish support member main body has a recess defining the slider movement path on the upper surface, and a through hole is provided on the bottom surface of the recess.
The slider moves while being guided by the recess.

Further, the weighing pan support member of the present invention is provided with a step for supporting the slider around the recess, and the central portion of the slider supported by the step is lowered when receiving a pressing force from the flanged pin. It is elastically deformed.
Due to the repulsive force of the elastically deformed slider, rattling and “positional displacement” of the weighing pan support member with respect to the load receiving portion are suppressed.

Further, in the weighing pan support member of the present invention, the step can be provided on both side walls of the concave portion facing each other and parallel to the sliding direction of the slider.
In this case, since the gap between the steps is narrow, it is necessary to accurately set the height of the steps to support the elastic slider without rattling.

Further, in the weighing pan support member of the present invention, the step can be provided on both side walls opposed to the recess and on both side walls orthogonal to the sliding direction of the slider.
In this case, since the gap between the steps is wide, the elastic slider can be supported without backlash even if there is some variation in the height of the steps.

Further, the weighing pan support member of the present invention is provided with a separation preventing piece for preventing the slider from detaching from the concave portion around the concave portion.
Therefore, the slide of the slider is stably performed while being guided by the recess.

Further, in the weighing pan support member of the present invention, a cylindrical protrusion that can be inserted into the long hole of the slider is provided on the bottom surface of the concave portion so as to be separated from the through hole, and the load receiving portion is provided in the central hole of the cylindrical protrusion. A pin fixed to the head may be inserted.
By positioning the pin of the load receiving portion on the cylindrical protrusion of the weighing pan support member, the positioning of the weighing pan support member with respect to the load receiving portion is further stabilized.

Further, in the weighing pan support member of the present invention, a pin may be erected on the surface of the weighing pan support member main body facing the load receiving portion, and this pin may be inserted into the hole of the load receiving portion.
By positioning the pins of the weighing pan support member main body in the holes of the load receiving portion, the positioning of the weighing pan support member with respect to the load receiving portion is further stabilized.

  It can be seen at a glance that the weighing pan support member of the present invention can be stably fixed to the load receiving portion of the balance in the same manner and is fixed in a normal state.

The figure which shows the state attached to the load receiving part of the weighing pan support member which concerns on embodiment of this invention. 1 is an exploded perspective view of the weighing pan support member of FIG. Sectional view of the weighing pan support member of FIG. The figure which shows the coupling | bonding procedure of the weighing pan support member main body of FIG. 1, and a slider. Diagram showing the shape of the weighing pan support member in the released state Top view of the weighing pan support member of FIG. Sectional drawing in the AA position of FIG. Sectional drawing in the CC position of FIG. Diagram showing relationship between flanged pin and communication hole Top view of weighing pan support member in fixed state Sectional drawing in the CC position of FIG. The disassembled perspective view which shows the 1st modification of the weighing pan support member of FIG. 12 is a top view of the weighing pan support member of FIG. 12 (released state). Sectional drawing in the AA position of FIG. Sectional drawing in the CC position of FIG. Top view of weighing pan support member of FIG. 12 (fixed state) Sectional drawing in the AA position of FIG. Sectional drawing in the CC position of FIG. The figure which shows the 2nd modification of the weighing pan support member of FIG. The figure which shows the 3rd modification of the weighing pan support member of FIG. The figure which shows the conventional weighing pan support member

FIG. 1 shows a state in which a weighing pan support member 20 according to an embodiment of the present invention is attached to a load receiver 10 of a scale, and FIG. 2 shows an exploded perspective view thereof. FIG. 3 is a cross-sectional view (a cross-sectional view at the position AA in FIG. 10).
A pin 9 with a flange 91 is fixed to the upper end of the load receiving portion 10 to which the weighing pan support member 20 is attached. The flanged pin 9 has a taper 93 on the lower surface of the flange portion 91 whose outer diameter becomes smaller from the flange portion 91 to the shaft portion 92 (see FIGS. 3 and 9).
The weighing dish support member 20 includes a weighing dish support member main body 21 made of a metal molded body (aluminum die cast or the like), and a slider 22 that is guided and slid by a recess 211 provided on the upper surface of the weighing dish support member main body 21. ing.

The concave portion 211 of the weighing pan support member main body 21 has a through hole 212 into which the flange portion 91 of the pin 9 can be inserted on the bottom surface thereof, and both sides in the longitudinal direction (sliding direction) of the slider 22 on both side walls. A step 213 for supporting the portion. Further, two separation preventing pieces 2141 and 2142 for preventing the slider 22 from being detached from the concave portion 211 are fixed to the respective upper edges of the opposing upper edges of the concave portion 211. Part of the separation preventing pieces 2141 and 2142 protrudes toward the concave portion 211 side. The separation preventing pieces 2141 and 2142 are integrally formed with the weighing pan support member main body 21, but the separation preventing pieces 2141 and 2142 formed separately may be fixed to the weighing pan support member main body 21.
Further, as shown in FIG. 3, a fitting recess for fitting the protruding portion 101 of the load receiving portion 10 and positioning the weighing pan support member main body 21 with respect to the load receiving portion 10 is provided on the lower surface of the weighing pan supporting member main body 21. 215 is provided.

On the other hand, the slider 22 is formed by punching and bending a metal plate, and the length in the sliding direction is set to be longer than the length of the concave portion 211 of the weighing pan support member main body 21 and is orthogonal to the sliding direction. The width to be set is set to a width that fits into the recess 211.
The flat plate surface of the slider 22 is provided with a communication hole 220 in which a long hole 222 having a width through which the shaft portion 92 of the flanged pin 9 passes and the flange portion 91 does not pass and an insertion hole 223 through which the flange portion 91 passes are communicated. It has been. Further, the shaft portion 92 of the flanged pin 9 passes through a place where the insertion hole 223 and the long hole 222 of the communication hole 220 communicate with each other, but has a narrow width portion 221 that is narrower than the long hole 222. (See FIGS. 2 and 6).
Both ends of the slider 22 in the sliding direction are bent downward so as to constitute pressing portions 224 and 225 for sliding the slider 22. The pressing portion 224 on the insertion hole 223 side also serves as a stopper that abuts against the side surface of the weighing pan support member main body 21 and restricts the slide of the slider 22. A stopper 226 cut and raised obliquely downward is provided inside the pressing portion 225 on the long hole 222 side.

  Further, on both sides in the longitudinal direction of the slider 22, a notch 227 for passing one detachment preventing piece 2141 and a notch 228 for passing the other detachment preventing piece 2142 are formed. The side edge of the portion from the pressing portion 225 to the stopper 226 is retracted by the same width as the cut-off portion 228 from the extension line on both sides in the longitudinal direction, and a gap for passing the separation preventing piece 2142 is formed between the cut-off portion 228 and It is formed by working together.

The weighing dish support member 20 is assembled as follows.
As shown in FIG. 4, the position of the notch 227 (indicated by a dotted line) for passing the separation preventing piece 2141 of the slider 22 is aligned with the position of the separation preventing piece 2141 of the weighing pan support member main body 21, and the separation preventing piece 2142 is The position of the clearance gap 228 (indicated by a dotted line) is adjusted to the position of the separation preventing piece 2142 (a), and the slider 22 is fitted into the recess 211 of the weighing pan support member main body 21 (b). At this time, the pressing portion 225 is positioned outside the recess 211, and the stopper 226 is positioned inside the recess 211.
Next, the pressing portion 224 of the slider 22 is pushed until the stopper 226 comes out of the wall 2111 of the recess 211 (c). At this time, the stopper 226 is deformed as shown in FIG. 4C and gets over the wall 2111 of the recess 211.
The stopper 226 that has climbed over the wall 2111 returns to its original shape and contacts the outside of the wall 2111 of the recess 211 (d).
Thus, even if the pressing portion 225 is pressed, the stopper 226 hits the wall 2111 of the recess 211 and the slider 22 coupled to the weighing pan support member main body 21 does not return to the state of (b).

Next, the slider 22 is slid in the recess 211 to align the through hole 212 of the recess 211 with the insertion hole 223 of the slider 22.
Next, the flange portion 91 of the flanged pin 9 fixed to the load receiving portion 10 is passed through the through hole 212 and the insertion hole 223, and the fitting recess 215 of the weighing pan support member main body 21 is passed through the protruding portion 101 of the load receiving portion 10. Fit into.

FIG. 5 shows the weighing pan support member 20 in this state. The weighing pan support member 20 in this state is engaged with the load receiving unit 10 but is not fixed to the load receiving unit 10 and is in a “released state”. 6 is a plan view of the weighing pan support member 20 in the released state, FIG. 7 is a cross-sectional view at the AA position in FIG. 6, and FIG. 8 is a cross-sectional view at the CC position in FIG. Yes.
When the weighing pan support member 20 is in the released state, the flanged pin 9 is not in contact with the insertion hole 223 of the slider 22 as shown in FIG. Therefore, there is no force acting on the slider 22 from the flanged pin 9 in the released state.

  As shown in FIG. 7, the pressing portion 224 of the slider 22 is formed on the side surface of the weighing pan support member main body 21 with the through hole 212 of the weighing pan support member main body 21 and the insertion hole 223 of the slider 22 aligned. Abut. Therefore, in the weighing dish support member 20 in which the weighing dish support member main body 21 and the slider 22 are coupled, in order to make the through hole 212 and the insertion hole 223 coincide with each other, the pressing portion 224 of the slider 22 is moved to the weighing dish support member main body. Press until you hit 21.

Next, in order to fix the weighing pan supporting member 20 in the released state to the load receiving portion 10, the pressing portion 225 is continuously pressed until the stopper 226 of the slider 22 contacts the wall 2111 of the weighing pan supporting member main body 21.
FIG. 9 shows the relationship between the flanged pin 9 and the communication hole 220 that change as the slider 22 moves.
FIG. 9A shows a state in which the flanged pin 9 is located at the insertion hole 223 of the communication hole 220. The slider 22 is positioned at the height of the taper 93 of the flanged pin 9, but the slider 22 is not in contact with the flanged pin 9 because the diameter of the insertion hole 223 is larger than the flange portion 91.

FIG. 9B shows a state in which the flanged pin 9 is located at the position of the narrow width portion 221 of the communication hole 220. The slider 22 of the narrow width part 221 contacts the taper 93 of the flanged pin 9 and is pressed downward. Therefore, the slider 22 is elastically deformed, and the repulsive force of the slider 22 acts on the flanged pin 9. In order for the flanged pin 9 to pass through the narrow portion 221, the slider 22 must be pressed against this repulsive force.
FIG. 9C shows a state where the flanged pin 9 is located at the long hole 222 of the communication hole 220. The slider 22 at the position of the long hole 222 is in contact with the taper 93 of the flanged pin 9, but there is almost no elastic deformation of the slider 22.

In the state of FIG. 9C, the weighing pan support member 20 is fixed to the load receiver 10. FIG. 1 shown above shows the weighing pan support member 20 in a fixed state, and FIG. 10 shows a plan view of the weighing pan support member 20 in a fixed state. 3 shows a cross-sectional view at the position AA in FIG. 10, and FIG. 11 shows a cross-sectional view at the position CC in FIG.
As described above, the passing position of the communication hole 220 of the flanged pin 9 is changed from the insertion hole 223 to the long hole 222 through the narrow width portion 221, whereby the weighing pan support member 20 is fixed to the load receiving portion 10. The elongated hole 222 can pass through the shaft portion 92 of the pin 9 with the flange, but cannot pass through the flange portion 91, so that the weighing pan support member 20 cannot be removed from the load receiving portion 10, and the load receiving portion 10 and the load receiving portion 20 can receive the load. The part 10 is fixed.

Further, the narrow portion 221 of the communication hole 220 that exerts a repulsive force on the flanged pin 9 does not perform the releasing operation, but the position of the slider 22 “displaces” from the fixed state to the released state. To prevent.
In addition, the weighing pan support member 20 can be removed from the load receiving portion 10 in the reverse order of assembly.
In this manner, this weighing pan support member can be stably fixed to the load receiving portion of the scale in the same manner as well as that the slider 22 is fixed in a normal state. It can be easily confirmed by looking at the position.

  FIG. 12 shows a first modification of the weighing pan support member of the present invention. The weighing pan support member 30 includes a weighing pan support member main body 31 and a slider 32. The recess 311 of the weighing pan support member main body 31 has a through hole 312 through which the flange portion 91 of the pin 9 can be inserted. And the cylindrical end of the through hole 312 slightly protrudes from the bottom surface of the recess 311. Further, a step 313 that supports the slider 32 is provided at both ends of the concave portion 311 in the longitudinal direction (sliding direction of the slider 32). Further, three separation preventing pieces 3141, 3142, 3143 are provided at the respective upper edges of the recess 311. The slider 32 has notches corresponding to the separation preventing pieces 3141, 3142, 3143, and only the point is different from the slider 22 of FIG.

The substantial change of the weighing pan support member 30 with respect to the weighing pan support member 20 (FIG. 2) is that the installation position of the step supporting the slider is orthogonal to the longitudinal direction from the position of the side parallel to the longitudinal direction of the recess. It is a point that changes to the position of the side.
This is due to the following reason.
If the distance between the steps supporting the slider of the elastic body is narrow, it is necessary to set the height of the step accurately in order to support the slider without rattling. However, if the gap between the steps supporting the slider is wide, even if there is some variation in the height dimension of the step, the variation can be absorbed and the slider can be supported without backlash.
The interval between both sides orthogonal to the longitudinal direction of the recess 311 is longer than the interval between both sides parallel to the longitudinal direction.
Therefore, it is easier to manufacture the weighing pan support member 30 when a step is provided on the side perpendicular to the longitudinal direction of the recess 311.
The procedure for attaching the weighing pan support member 30 to the load receiver 10 is the same as that of the weighing pan support member 20 of FIG.

FIG. 13 shows the weighing pan support member 30 in the released state, and FIG. 14 shows a cross-sectional view at the AA position in FIG. 13 and FIG. 15 shows a cross-sectional view at the CC position in FIG.
16 shows the weighing pan support member 30 in a fixed state. FIG. 17 shows a cross-sectional view at the AA position in FIG. 16, and FIG. 18 shows a cross-sectional view at the CC position in FIG. Yes.

FIG. 19 shows a second modification of the weighing pan support member of the present invention. The weighing dish support member body 41 of the weighing pan support member 40 has a cylindrical projection 413 at a position spaced from the through-hole 412 of the recess 4 11. The central hole of the cylindrical protrusion 413 passes through the bottom surface of the recess 411. The shape of the slider 22 is the same as that in FIG. 2, and the cylindrical protrusion 413 is inserted into the long hole 222 of the slider 22 coupled to the weighing pan support member main body 41.
On the other hand, the load receiving portion 10, the upper end joined with the weighing dish support member body 4 1, together with the flanged pin 9 has a pin 95 which is inserted into the central hole of the cylindrical projection 413.
When the weighing pan support member 40 is fixed to the load receiving portion 10, the pin 95 fits into the cylindrical protrusion 413 of the weighing pan support member main body 41, so that the positioning of the weighing pan support member 40 with respect to the load receiving portion 10 is further stabilized. To do.

FIG. 20 shows a third modification of the weighing pan support member of the present invention. The weighing pan support member main body 51 of the weighing pan support member 50 has a pin 52 erected on the back surface facing the load receiving portion 10. On the other hand, the load receiver 10 has a hole 94 into which the pin 52 is inserted.
When the weighing pan support member 50 is fixed to the load receiving portion 10, the pin 52 fits into the hole 94 of the load receiving portion 10, so that the positioning of the weighing pan support member 40 with respect to the load receiving portion 10 is further stabilized.
In addition, the structure shown here is an example, Comprising: This invention is not limited only to it.

  The weighing pan support member of the present invention is easy to stably attach to the load receiving portion and check the mounting state, and can be applied to many scales that need to support the weighing pan.

DESCRIPTION OF SYMBOLS 9 Pin with flange 10 Load receiving part 11 Scale main body 14 Load receiving part 14b Screw hole 15 Hole part 16 Weighing pan support member 17 Weighing pan 18 Screw 20 Weighing pan support member 21 Weighing pan support member main body 22 Slider 30 Weighing pan support member 31 Weighing pan support member main body 32 Slider 40 Weighing pan support member 41 Weighing pan support member main body 51 Weighing pan support member main body 52 Pin 91 Flange portion 92 Shaft portion 93 Taper 94 Hole 95 Pin 101 Protruding portion 211 Recess portion 212 Through hole 213 Step height 215 Fitting Joint recess 220 Communication hole 221 Narrow width portion 222 Long hole 223 Insertion hole 224 Press portion 225 Press portion 226 Stopper 227 Cutout portion 228 Cutout portion 311 Recess 312 Through hole 313 Step 411 Recess 412 Through hole 413 Cylindrical protrusion 2111 Wall portion 2141 Detachment prevention piece 214 Anti-separation piece 3141 anti-separation piece 3142 anti-separation piece 3143 separation preventing piece

Claims (9)

A weighing pan support member that is fixed to a load receiving portion of a balance and supports a weighing pan,
A weighing pan support member body provided with a through-hole through which a flange portion of a flanged pin fixed to the load receiving portion can be inserted;
The shaft portion of the pin with flange can be inserted, and has a communication hole in which a long hole whose width cannot be inserted through the flange portion and an insertion hole through which the flange portion can be inserted, A slider that slides on top,
Have
The weighing pan support member body and the slider are attached to the flanged pin in a state where the through hole and the insertion hole are overlapped,
The slider is slid so that the position on the slider through which the shaft portion of the flanged pin passes is moved from the insertion hole to the elongated hole, and the weighing pan support member main body is fixed to the load receiving portion. ,
A weighing pan support member characterized by that.   2. The weighing pan support member according to claim 1, wherein the flanged pin has a taper having an outer diameter that decreases from the flange portion toward the shaft portion on a lower surface of the flange portion, The communication hole has a narrow width portion narrower than the long hole at the communication portion between the insertion hole and the long hole, and when the flanged pin is passed through the narrow width portion by sliding the slider, The weighing dish support member, wherein the slider is elastically deformed by being pressed downward by the taper.   3. The weighing pan support member according to claim 1, wherein the weighing pan support member main body has a concave portion defining a movement path of the slider on an upper surface, and the through hole is provided on a bottom surface of the concave portion. A weighing pan support member characterized by comprising:   4. The weighing pan support member according to claim 3, wherein a step for supporting the slider is provided around the recess, and a center portion of the slider supported by the step is pushed from the flanged pin. A weighing pan support member that elastically deforms downward when subjected to pressure.   5. The weighing dish support member according to claim 4, wherein the step is provided on both opposite side walls of the concave portion, and the both side walls are parallel to the sliding direction of the slider. Weighing pan support member.   5. The weighing pan support member according to claim 4, wherein the step is provided on opposite side walls of the recess, and the both side walls are orthogonal to the sliding direction of the slider. Weighing pan support member.   The weighing pan support member according to any one of claims 3 to 6, wherein a separation preventing piece for preventing separation of the slider from the concave portion is provided around the concave portion. Dish support member.   The weighing pan support member according to any one of claims 3 to 7, wherein a cylindrical protrusion that can be inserted into the elongated hole of the slider is provided on the bottom surface of the concave portion so as to be separated from the through hole. And a weighing pan support member, wherein a pin fixed to the load receiving portion is inserted into a central hole of the cylindrical protrusion.   The weighing pan support member according to any one of claims 3 to 7, wherein a pin is erected on a surface of the weighing pan support member body facing the load receiving portion, and the pin is the load receiving portion. A weighing pan support member, which is inserted into the hole of the weighing pan.