TWI690674B - Lamp module - Google Patents

Abstract

A lamp module includes a base, a lamp unit, and a clamping unit. The base includes a body and a dovetail groove recessed in the body along a first axis and extending along an installation axis perpendicular to the first axis. The lamp unit includes a lamp body and a positioning member fixed behind the lamp body. The positioning member is slidably extended from the dovetail groove. The clamping unit includes a protrusion extending from the dovetail groove and extending along the installation axis and disposed on the bottom wall, and an engaging groove formed on a side of the positioning member opposite to the lamp body. The engaging groove can rotate about a first axis relative to the protrusion between a detached position and a combined position, so the user only needs to turn the lamp unit to make the engaging groove relative to the first axis relative to The convex block rotates between the detached position and the combined position, thereby detaching or assembling the lamp unit from the base.

Description

Lamp module

The invention relates to a light-emitting device, in particular to a lamp module.

In order to improve the safety of driving when a user rides a bicycle, a warning light is usually installed on a seat post of the bicycle to remind other passers-by.

An existing warning lamp includes a lamp body, and a ring set connected to the lamp body and having an arc shape and capable of being wound around the cushion upright. When installing the existing warning light, the user must wind the ring kit around the cushion upright, and connect the opposite ends of the ring kit by screws, so that the ring kit can press the seat cushion A vertical pole to fix the lamp body on the cushion vertical pole.

However, when the power of the existing warning light is insufficient, the user must remove the existing warning light from the seat cushion post and install it on the seat cushion post after replacing the battery. It is troublesome, and sometimes it is impossible to immediately obtain a suitable tool for disassembling and assembling screws when going out, and it is impossible to immediately replace the battery of the existing warning lamp.

Therefore, the object of the present invention is to provide a lamp mold with convenient disassembly and assembly group.

Therefore, the lamp module of the present invention includes a base, a lamp unit, and a clamping unit. The base includes a body and a dovetail groove recessed in the body along a first axis and extending along an installation axis perpendicular to the first axis. The dovetail groove is open along one end of the installation axis. The body has a bottom wall that intersects the first axis, a side wall extending from a part of the peripheral edge of the bottom wall along the extension direction of the first axis, and a top wall extending from the side wall toward the first axis. The dovetail groove is jointly defined by the bottom wall, the side wall, and the top wall.

The lamp unit includes a lamp body and a positioning member fixed behind the lamp body. The positioning member is slidably extended in the dovetail slot along the installation axis through the open end of the dovetail slot, the positioning member has a head adjacent to the bottom wall, and a head connecting the head and the A neck portion between the lamp bodies and slidable along the dovetail groove and having a profile perpendicular to the first axis smaller than that of the head. The clamping unit includes a protrusion extending from the dovetail groove and extending along the installation axis and disposed on the bottom wall, and an engagement groove formed on the side of the head opposite to the lamp body. The engaging groove has a connecting area, two clamping areas extending reversely outward from the connecting area, and two sliding areas extending reversely outward from the connecting area and being angularly spaced from the clamping areas . At least one of the sliding areas is opposite to one end of the connecting area, which is open to the outside in the direction of extension of the connection area, and the protrusion can slide into the engaging groove. Each clamping area is opposite to one end of the connection area.

The engaging groove can be in a detached position relative to the projection about the first axis and Rotate between a combined position. In the detached position, the projection is located in the sliding areas and the connecting area, the sliding areas are in the same direction as the installation axis. In the combined position, the protrusions are located in the clamping areas and the connecting area, and the clamping areas are in the same direction as the installation axis.

The effect of the present invention is that, by providing the convex block and the engaging groove, the user only needs to rotate the lamp unit to make the engaging groove around the first axis relative to the convex block at the detached position and the The rotation between the combining positions further detaches or assembles the lamp unit from the base.

11: Rod

2: base

21: Ontology

211: bottom wall

41: bump

412: Connection

413: Sliding part

42: Engagement slot

212: Side wall

213: top wall

214: Deformation

215: fixed part

216: Groove

217: District 1

218: Second District

22: Dovetail slot

221: Sliding opening

222: Forced penetration area

223: Card arrival area

224: positioning mouth area

3: Lamp unit

31: Light body

32: Positioning piece

321: head

322: neck

323: Anti-backlash adjuster

4: card unit

422: Connection area

423: Card area

424: Slide area

5: Set unit

51: Holder

52: Elastic ring

6: clamping unit

61: clamping wall

62: connecting wall

L1: first axis

L2: Second axis

D: Installation axial

L3: third axis

T1: first length

T2: second length

T3: third length

T4: fourth length

T5: Fifth length

Other features and functions of the present invention will be clearly presented in the embodiment with reference to the drawings, in which: FIG. 1 is a three-dimensional combination diagram of a first embodiment of a lamp module of the present invention and a lever, illustrating a The long direction of the lamp body is perpendicular to an installation axis; FIG. 2 is an exploded perspective view of the first embodiment and the rod; FIG. 3 is an exploded perspective view of the first embodiment and the rod from another perspective Figure 4 is a schematic front view of a base, a projection, two hooks, and a neck of the first embodiment; Figure 5 is a schematic front view illustrating the base of the first embodiment The seat and the set unit are arranged on the rod, and illustrate that an engaging groove is in a combined position with respect to the projection; FIG. 6 is a diagram similar to FIG. 5, illustrating that the engaging groove is relative to the projection A detached position; 7 is a front view illustrating that the first embodiment is installed on the rod, and illustrates that the longitudinal direction of the lamp body is the same as the installation axis; FIG. 8 is taken along the line VIII-VIII of FIG. 7 A partial cross-sectional view illustrating that the engaging groove is at the detached position relative to the projection; FIG. 9 is a view similar to FIG. 7, illustrating that the longitudinal direction of the lamp body is rotated from the same direction as the installation axis to the vertical installation Axial process; FIG. 10 is a partial cross-sectional view taken along line XX of FIG. 9, illustrating that a head is forced against the bump to drive a deformed portion to deform away from the engaging groove; FIG. 11 is a diagram 1 is a partial cross-sectional view taken along line XI-XI, illustrating that the engaging groove is at the joint position with respect to the bump; FIG. 12 is a partial cross-sectional view taken along line XII-XII of FIG. The gap adjusting portion is forced against a surface of the top wall opposite to the head; and FIG. 13 is an exploded perspective view of a second embodiment of the lamp module of the present invention.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same numbers.

Referring to FIGS. 1, 2, and 3, a first embodiment of the lamp module of the present invention is suitable for being detachably connected to a rod 11. The lamp module includes a base 2, a lamp unit 3, a clamping unit 4, and a set of units 5.

The base 2 includes a body 21, and a recess along the first axis L1 The body 21 extends along a dovetail groove 22 perpendicular to the first installation axis D of the first axis L1. The dovetail groove 22 is open along one end of the mounting axis D.

The body has a bottom wall 211 that intersects with the first axis L1, a side wall 212 extending from a part of the peripheral edge of the bottom wall 211 along the extending direction of the first axis L1, and a side wall 212 toward the first axis A top wall 213 extending from L1, and a through slot 216 extending through the bottom wall 211 and partially surrounding the first axis L1. In this embodiment, the outline of the through slot 216 perpendicular to the first axis L1 is U-shaped.

The through-groove 216 has a first area 217 and two spaced-apart second areas 218 extending from both ends of the first area 217 along the mounting axis D toward the open end of the dovetail groove 22.

The bottom wall 211 is made of a flexible material, and has a deformation portion 214 located between the second regions 218 and adjacent to the first region 217, and a deformation portion 214 connected to the deformation portion 214 and located in the first regions A fixing portion 215 between the two regions 218 and adjacent to each second region 218 opposite to one end of the first region 217. Applying force to the deformed portion 214 can deform the deformed portion 214 along the extending direction of the first axis L1, and after removing the applied force, the deformed portion 214 can be restored to its original position by the characteristics of the flexible material .

The dovetail groove 22 is jointly defined by the bottom wall 211, the side wall 212, and the top wall 213.

2, 3 and 4, the dovetail groove 22 has a sliding opening 221 surrounded by the top wall 213. The sliding opening 221 has an open end adjacent to the dovetail groove 22 The forced penetration area 222, a snap-in area 223 opposite to the forced penetration area 222 along the installation axis D, and a positioning opening between the forced-penetration area 222 and the snap-in area 223 Area 224. The slot widths of the forced penetration area 222, the snap-in area 223, and the positioning opening area 224 perpendicular to the installation axis D are defined as a first length T1, a second length T2, and a third length T3, respectively. The third length T3 is greater than the first length T1 and the second length T2.

The lamp unit 3 is detachably mounted on the base 2 along the mounting axis D. The lamp unit 3 includes a lamp body 31 and a positioning member 32 fixed behind the lamp body 31. The positioning member 32 is slidably extended in the dovetail groove 22 through the open end of the dovetail groove 22 along the mounting axis D.

The positioning member 32 has a head 321 adjacent to the bottom wall 211, a profile connecting the head 321 and the lamp body 31 and slidable along the dovetail groove 22 and perpendicular to the first axis L1 is smaller than the The neck portion 322 of the outline of the head 321 and the anti-backlash adjusting portion 323 connected to the lamp body 31.

The long and short directions of the outline of the neck 322 perpendicular to the first axis L1 extend along a second axis L2 and a third axis L3, respectively, and the lengths are a fourth length T4 and a fifth length, respectively T5. The length of the neck 322 along the extending direction of the second axis L2 (ie, the fourth length T4) is greater than the groove width of the forcing port region 222 (ie, the first length T1).

The anti-backlash adjusting portions 323 extend from the neck 322 in the opposite direction of the extension direction of the second axis L2, and the outline perpendicular to the first axis L1 protrudes from The head 321 is perpendicular to the contour of the first axis L1.

The groove width (ie, the second length T2) of the snap-in area 223 of the dovetail groove 22 corresponds to the length of the neck 322 in the extending direction of the third axis L3 (ie, the fifth length T5). The groove width of the positioning opening area 224 (ie the third length T3) corresponds to the length of the neck 322 corresponding to the extension direction of the second axis L2 (ie the fourth length T4).

The clamping unit 4 includes a protrusion 41 extending from the dovetail groove 22 and extending along the installation axis D and connected to the deforming portion 214, and a side formed on the head 321 opposite to the lamp body 31的合合槽42.

The protrusion 41 has a connecting portion 412 connected to the deforming portion 214 and a sliding portion 413 opposite to the connecting portion 412 along the first axis L1 and adjacent to the engaging groove 42. The outline of the protrusion 41 perpendicular to the first axis L1 is gradually enlarged from the sliding portion 413 toward the connecting portion 412.

Referring to FIGS. 2, 3, and 5, the engaging groove 42 has a connecting area 422, two locking areas 423 extending outward from the connecting area 422 along the direction of extension of the third axis L3, and two connecting areas The sliding areas 424 of the areas 422 extend in opposite directions along the extending direction of the second axis L2 and are angularly spaced from the clamping areas 423. In this embodiment, the extending direction of the sliding areas 424 is perpendicular to the extending direction of the clamping areas 423.

One end of each sliding area 424 opposite to the connecting area 422 is open outward in the direction of its extension and allows the protrusion 41 to slide in and extend into the engaging groove 42. Each clamping area 423 is closed at one end opposite to the connecting area 422. The connecting portion of the bump 41 The length of 412 along the installation axis D is greater than the groove width of the connecting area 422 corresponding to the clamping areas 423.

The engaging groove 42 can rotate about a first axis L1 relative to the projection 41 between a detached position (see FIG. 6) and a combined position (see FIG. 5), and allows the lamp unit 3 to rotate around the first The axis L1 rotates relative to the base 2.

6 and 7, when the engaging groove 42 is in the detached position, the protrusion 41 is located in the sliding areas 424 and the connecting area 422, the sliding areas 424 are in the same direction as the installation axis D, and The neck 322 corresponds to the snap-in area 223, and the longitudinal direction of the lamp body 31 is the same as the installation axis D.

Referring to FIGS. 1 and 5, when the engaging groove 42 is in the joint position, the protrusion 41 is located in the clamping area 423 and the connecting area 422, and the clamping area 423 is in the same direction as the installation axis D, And the neck 322 corresponds to the positioning mouth area 224, and the longitudinal direction of the lamp body 31 is perpendicular to the installation axis D.

The sleeve unit 5 includes two hooking members 51 respectively connected to two opposite sides of the base 2 along the installation axis D, and an elastic ring 52 interposed between the hooking members 51.

Referring to FIGS. 3, 5 and 6, when assembling the lamp module, the user needs to first make the base 2 correspond to the rod 11 and insert the elastic ring 52 between the hooks 51 Therefore, the base 2, the hooks 51 and the elastic ring 52 are suitable for being wound around the rod 11, and the base 2 can be fixed on the rod 11.

Next, the operation makes the short direction of the neck 322 of the lamp unit 3 correspond to the open end of the dovetail groove 22 (that is, makes the fifth length T5 shown in FIG. 4 correspond to the first length T1), so that the positioning member 32 Slide into the dovetail groove 22 and make the projection 41 slide into the engaging groove 42 corresponding to the opening of one of the sliding areas 424.

When the neck 322 slides to the corresponding snap-in area 223, the protrusion 41 is located in the sliding areas 424 and the connecting area 422, and the sliding areas 424 are in the same direction as the installation axis D. The engaging groove 42 then reaches the detached position.

The continuous operation causes the lamp unit 3 to rotate relative to the base 2 about the first axis L1, so that the neck 322 corresponds to the positioning port area 224, and the protrusion 41 is located in the clamping area 423 and the connection area 422 And the clamping area 423 is in the same direction as the installation axis D, and the engaging groove 42 reaches the joint position and completes the assembly. Since each clamping area 423 is closed at one end opposite to the connecting area 422, when the engaging groove 42 is in the coupling position, the positioning member 32 of the lamp unit 3 cannot slide out of the dovetail groove along the installation axis D 22 outside.

In the process of rotating the engaging groove 42 from the detached position to the engaged position in the foregoing operation, the length of the protrusion 41 along the installation axis D is greater than the groove of the connecting area 422 corresponding to the locking area 423 Wide (see FIG. 8), so the head 321 surrounding the connecting area 422 will force against the protrusion 41 and drive the deformation portion 214 to deform away from the engaging groove 42 (see FIGS. 9 and 10) and away The connection area 422.

Referring to FIG. 11, when the engaging groove 42 reaches the coupling position, the deformed portion 214 will approach the engaging groove 42 again by the elastic restoring force of the flexible material, so that the protrusion 41 extends into the connecting area 422 and the clamping areas 423.

Referring to FIGS. 4, 5, and 6, in addition, since the groove width of the positioning port area 224 (ie, the third length T3) is wider and the groove width of the snap-in area 223 (ie, the second length T2) is narrower, so During the rotation from the detached position (as shown in the solid line position in FIG. 4) to the combined position (as shown in the imaginary line position in FIG. 4), a slight force is required to force the neck 322 to support the top wall 213 corresponding to the snap The junction of the mouth area 223 and the positioning mouth area 224 enables the neck 322 to slide to correspond to the positioning mouth area 224.

Similarly, when the user wants to detach the lamp unit 3 from the base 2, the user needs to operate to rotate the lamp unit 3 relative to the base 2 about the first axis L1 and apply a little force to make The neck 322 forcibly supports the top wall 213 corresponding to the intersection of the snap-in area 223 and the positioning mouth area 224 and slides to correspond to the snap-in area 223, so that the engaging groove 42 returns to the detachment After the position, the positioning member 32 can be operated to slide along the installation axis D and slide out from the open end of the dovetail groove 22 to complete the detachment.

Referring to FIGS. 8 and 12, in addition, when the engaging groove 42 is at the coupling position (see FIG. 12 ), the anti-backlash adjusting portions 323 can be forced against the surface of the top wall 213 opposite to the head 321, Therefore, the engagement between the head 321 and the top wall 213 can be made tighter and not easy to loosen; relatively, when the engagement groove 42 is in the detached position (see FIG. 8), the Although the gap adjustment portion 323 can be forced against the side of the top wall 213 opposite to the head 321, the anti-backlash adjustment portion 323 on the right side of FIG. 8 corresponds to the forced penetration area 222 and is not It provides an urging force, so it only needs to apply a little force to operate the lamp body 31 to rotate.

In this way, when the user needs to disassemble the lamp unit 3 to replace the battery, there is no need to use other tools, only need to rotate the lamp unit 3 to complete the disassembly, it is very convenient in use, and only needs to be The small working space can complete the disassembly.

It should be particularly noted that, during the aforementioned disassembly process, the user needs to apply a little force to force the neck 322 to support the top wall 213 corresponding to the junction of the snap-in area 223 and the positioning area 224. The engaging groove 42 is rotated to the detached position, so it will not be easily rotated to the detached position and disengaged during normal use.

4 and 6, in addition, when the user wants to slide the positioning member 32 into the dovetail groove 22 during the assembly process, if the longitudinal direction of the neck 322 of the lamp unit 3 corresponds to the dovetail groove 22, At one end (that is, the extension direction of the third axis L3 is the same as the installation axis D), because the length of the neck 322 along the extension direction of the second axis L2 (that is, the fourth length T4) is greater than The groove width of the forced penetration area 222 (ie, the first length T1), so it will not slide into the dovetail groove 22, so it can be ensured that the short direction of the neck 322 corresponds to the dovetail groove 22 during assembly When the open end slides in, so that the positioning member 32 slides into the dovetail groove 22, the protrusion 41 corresponds to the opening of one of the sliding areas 424 and can slide into the engaging groove 42.

It is worth mentioning that in this embodiment, by providing the deforming portion 214, the protrusion 41 is rotated during the rotation between the disengagement position and the coupling position of the engaging groove 42 The engaging groove 42 can be moved away, and the engaging groove 42 can be rotated to another position. However, it is not limited to this, and in other embodiments, the deformation portion 214 may not be provided, but the bump 41 or the head 321 is made of a flexible material. When the engaging groove 42 rotates between the detached position and the joint position, the bump 41 or the head 321 is made of a flexible material The characteristics are deformed and matched to rotate the engaging groove 42 to another position.

Referring to FIG. 13, a second embodiment of the lamp module of the present invention is similar to the first embodiment. The difference is that the lamp module is suitable for clamping to an object (not shown).

The lamp module also includes a clamping unit 6. The clamping unit 6 is connected to a side of the base 2 opposite to the lamp unit 3 and can cooperate with the base 2 to be suitable for clamping two opposite sides of the object respectively, and includes a base disposed on the base The clamping wall 61 behind the bottom wall 211 of the seat 2 is connected to the base 2 and the clamping wall 61 and can provide a force that keeps the clamping wall 61 constantly approaching the bottom wall 211的连接壁62。 The connection wall 62.

When using, the user can assemble the lamp unit 3 to the base 2 and operate the clamping wall 61 and the bottom wall 211 to clamp the user's clothes (not shown), for example: neckline, cuff , Or trousers, etc., to remind other passers-by.

In this way, the second embodiment can also achieve the same purposes and effects as the first embodiment.

It is worth mentioning that, in other embodiments, the lamp module may also include two bases 2 at the same time, and respectively connect a set of units 5 and a clamping unit 6, One of the bases 2 is fixed on a rod 11 by the sleeve unit 5. When the user rides a bicycle, the lamp unit 3 can be assembled on the base 2 fixed on the rod 11, and when used When you have to leave the bicycle or encounter rain, you can remove the lamp unit 3 and assemble it on another base 2 and fix it to the user's clothing by the clamping unit 6, so that you can Very easy to carry.

In summary, by providing the protrusion 41 and the engaging groove 42, the user does not need to use other tools, and only needs to rotate the lamp unit 3 to make the engaging groove 42 oppose the first axis L1 Since the projection 41 rotates between the detached position and the combined position, the lamp unit 3 is detached from the base 2 or assembled on the base 2, which is very convenient in use, and only needs to be Disassembly and assembly can be completed with a small working space, so it can indeed achieve the purpose of cost invention.

However, the above are only examples of the present invention, and the scope of implementation of the present invention cannot be limited by this, any simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification are still classified as Within the scope of the invention patent.

11: Rod

213: top wall

216: Groove

217: District 1

218: Second District

223: Card arrival area

224: positioning mouth area

3: Lamp unit

31: Light body

323: Anti-backlash adjuster

41: bump

412: Connection

413: Sliding part

42: Engagement slot

422: Connection area

423: Card area

424: Slide area

5: Set unit

32: Positioning piece

321: head

322: neck

51: Holder

52: Elastic ring

D: Installation axial

Claims (10)

A lamp module, including: A base includes a body, and a dovetail groove recessed in the body along a first axis and extending along an installation axis perpendicular to the first axis, the dovetail groove opening along one end of the installation axis , The body has a bottom wall that intersects the first axis, a side wall that extends from a part of the periphery of the bottom wall along the extension direction of the first axis, and a top wall that extends from the side wall toward the first axis , The dovetail groove is jointly defined by the bottom wall, the side wall, and the top wall; A lamp unit includes a lamp body and a positioning member fixed behind the lamp body, the positioning member is slidably extended in the dovetail groove along the installation axis through the open end of the dovetail groove, The positioning member has a head adjacent to the bottom wall, and a neck connecting the head and the lamp body and sliding along the dovetail groove and having a profile perpendicular to the first axis smaller than that of the head Department; and A clamping unit includes a protrusion extending from the dovetail groove and extending along the installation axis and disposed on the bottom wall, and an engaging groove formed on the side of the head opposite to the lamp body, the The engaging groove has a connecting area, two clamping areas extending reversely outward from the connecting areas, and two sliding areas extending reversely outward from the connecting areas and being angularly spaced from the clamping areas, At least one of the sliding areas is opposite to one end of the connecting area, which is open to the outside in the direction of its extension and allows the projection to slide in and extend into the engaging groove, each locking area is opposite to the connecting area Closed at one end, The engaging groove can rotate about a first axis relative to the projection between a detached position and a combined position, and in the detached position, the projection is located in the sliding area and the connecting area, the The sliding area is in the same direction as the installation axis. In the combined position, the protrusion is located in the clamping areas and the connection area, and the clamping areas are in the same direction as the installation axis. The lamp module according to claim 1, wherein the bottom wall of the base is made of a flexible material, and the body further has a through-groove that penetrates the bottom wall and partially surrounds the first axis, The through-groove has a first area, and two spaced-apart second areas extending from both ends of the first area along the mounting axis toward the open end of the dovetail groove, the bottom wall has a A deformation portion between the two areas and adjacent to the first area and provided for the projection of the clamping unit, and a connection between the deformation portion and between the second areas and corresponding to each second area A fixing portion at one end of the first zone. The lamp module according to claim 2, wherein the protrusion of the clamping unit has a connecting portion connected to the deformed portion, and an opposite to the connecting portion and adjacent to the engaging portion along the first axis In the sliding portion of the groove, the contour of the protrusion perpendicular to the first axis is gradually enlarged from the sliding portion toward the connecting portion. The lamp module according to claim 3, wherein the length of the connecting portion of the clamping unit along the installation axis is greater than the groove width of the connecting region corresponding to the clamping regions. The lamp module according to claim 1, wherein the dovetail groove of the base has a sliding opening surrounded by the top wall, the sliding opening has a forced opening area adjacent to an open end of the dovetail groove, A snap-in area along the mounting axis opposite to the forced-through area, and a positioning-mouth area between the forced-through area and the snap-in area, defining the neck perpendicular to the first axis The long direction and the short direction of the profile are respectively extended along a second axis and a third axis, and the extension direction of the neck of the lamp unit along the second axis is greater than the groove width of the forced opening area The control zone extends along the extension direction of the third axis, and the sliding zones extend along the extension direction of the second axis. The lamp module according to claim 5, wherein the groove width of the snap-in area of the base corresponds to the length of the neck of the lamp unit along the extension direction of the third axis, and the groove of the positioning mouth area The width corresponds to the length of the neck corresponding to the extension direction of the second axis. When the engagement groove is at the detached position, the neck extends to the abutment area. When the engagement groove is at the combined position, the neck The Ministry should locate the mouth area. The lamp module according to claim 1, wherein the positioning member of the lamp unit further includes a plurality of lamps connected to the lamp body and extending outward from the neck along the extension direction of the second axis Anti-backlash adjuster. The lamp module according to claim 1, wherein the extending direction of the sliding areas of the clamping unit is perpendicular to the extending direction of the clamping areas. The lamp module according to claim 1, further comprising a set of units, the set of units includes two hooking pieces respectively connected to two opposite sides of the base along the installation axis, and an inset fastener Wait for the elastic ring between the holding parts. The lamp module according to claim 1, further comprising a clamping unit, the clamping unit includes a clamping wall disposed behind the bottom wall, and capable of connecting between the base and the clamping wall A connecting wall is provided that keeps the clamping wall constantly approaching the force toward the bottom wall.

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