CN206555907U - A kind of light fixture - Google Patents

Abstract

The scheme that the utility model solves technical problem is to provide a kind of light fixture, including cell apparatus and lamp body, the cell apparatus includes housing and battery, the housing formation cell containing cavity houses the battery, the housing is removably connected to the lamp body, and the part or all of exposed lamp body of the cell apparatus.The utility model has the advantages that cell apparatus and lamp body convenient can dismantle cell apparatus good heat dissipation effect simultaneously.

Description

A kind of light fixture

【Technical field】

The utility model is related to lighting field, is related specifically to a kind of light fixture.

【Background technology】

Solar energy lamp is powered using crystal silicon solar energy battery, non-maintaining colloid battery storage electric energy, super bright LED lamp is controlled as light source, and by intelligent charging-discharging controller, for the light fixture for replacing conventional utility power to illuminate.Tool Cable need not be laid by having, and stability is good, and luminous efficiency is high, installation easy maintenance, a variety of advantages such as energy-conserving and environment-protective.It is widely used in City main and secondary road, cell, factory, a variety of occasions such as tourist attractions.

Cell apparatus in traditional solar energy lamp is fixedly welded on lamp housing, and its shortcoming is inconvenience to cell apparatus Dismounting, maintenance and replacing；Also cell apparatus is removably fixed in lamp housing, but cell apparatus is arranged on inside lamp housing, causes to dissipate Thermal effect is bad, influences cell apparatus service life.

【Utility model content】

To overcome the problem of existing solar energy lamp is present, the utility model provides a kind of light fixture.

The scheme that the utility model solves technical problem is to provide a kind of light fixture, including cell apparatus and lamp body, the electricity Pool device includes housing and battery, and the housing formation cell containing cavity houses the battery, and the housing is removably connected to The lamp body, and the cell apparatus partly or entirely exposes to the lamp body.

Preferably, the housing includes substrate, swash plate and the top plate being sequentially connected, and the top plate and substrate-parallel are set, The swash plate connects the top plate and substrate to form cell containing cavity of the opening in top plate, and the housing is through the top plate and lamp Body is detachably connected.

Preferably, lamp body include solar panels, the bottom plate and crossbeam being oppositely arranged with solar panels, the crossbeam upper end with The solar panels connection, the crossbeam lower end is connected with the bottom plate and is threadedly coupled through the bottom plate with the top plate.It is excellent Selection of land, the cell apparatus also includes controller, and the controller is contained in the cell containing cavity.

Preferably, heat emission hole is provided with the swash plate and/or substrate, the heat emission hole is to the battery and controller Radiating.

Preferably, the size of the substrate is less than the bottom size of battery, and the battery container is in the cell containing cavity When be arranged between the swash plate, form difference in height between the bottom of the battery and the substrate.

Preferably, multiple ribs and/or multiple projections are provided with the substrate, the battery container holds in the battery When putting chamber, the bottom of the battery falls within the rib and/or raised upper so that bottom and the bottom plate formation difference in height of battery.

Preferably, the housing further comprises multiple brackets, and the bracket is in " recessed " shape, the bracket two End bridging is fixed on the top plate, and the battery container is between the bracket and housing.

Preferably, the lamp body includes bottom plate, and the housing includes substrate, swash plate and top plate, and top plate and substrate-parallel are set Put, the swash plate connects the top plate and substrate to form cell containing cavity of the opening in top plate；One of described bottom plate and top plate Chute is set on person, and the top plate and bottom plate are fixed in the chute by slipping into.

Preferably, when chute being set on the bottom plate, lug boss or concave part are set in the chute, and in the top plate Concave part or lug boss that upper setting is matched with the lug boss of chute or concave part that are set on bottom plate；Or set on the top plate When putting chute, lug boss or concave part, and setting and the chute set on top plate on the bottom plate are set on the chute Lug boss or concave part matching concave part or lug boss.

Compared with prior art, Solar lamp of the present utility model has following beneficial effect：

1st, the battery container is in the cell containing cavity that the housing is formed, and the housing is removably connected to the lamp Body, is easy to the dismounting, maintenance and replacing of cell apparatus and lamp body；And the cell apparatus partly or entirely the exposed lamp body and It is not all of being arranged in lamp body, so that cell apparatus radiating effect is more preferably, while cell apparatus can be at utmost away from the sun Energy plate, be prevented effectively from cell apparatus is influenceed by the high temperature of solar panels, extends battery.

2nd, substrate and swash plate the formation cell containing cavity, the battery container is in the cell containing cavity, the housing It is connected through the top plate with the base thread, is easy to the battery and housing to dismount in the lump and by screw thread dismounting side Just；Swash plate is obliquely installed in substrate surrounding simultaneously, with more preferable waterproof effect.

3rd, described crossbeam one end is connected with the solar panels, and the crossbeam other end is connected and passed through with the base thread The bottom plate is threadedly coupled with the top plate, is threadedly coupled the solar panels, bottom plate and substrate in the lump by crossbeam, is made lamp Has compact overall structure, tightness is more preferable.

4th, the controller and battery are contained in the cell containing cavity in the lump, controller is torn open in the lump with battery Dress, is easy to the maintenance and replacing to controller.

5th, heat emission hole is provided with the swash plate and/or substrate, the heat emission hole radiates to the battery and controller, together When heat emission hole can make cell apparatus that there is more preferable waterproof effect with draining.

6th, it is more smaller than the bottom size of battery by the size of arranging plate, battery container is blocked when the cell containing cavity Difference in height is formed between the swash plate and between the substrate, has ponderable architectural feature with regard to energy without increasing other Make cell apparatus that there is more preferable waterproof effect.

7th, by being provided with multiple ribs and/or multiple projections on substrate, battery bottom and bottom plate formation difference in height are made, Make cell apparatus that there is more preferable water resistance.

8th, the bracket is in " recessed " shape is fallen, and the bracket two ends are connected across on the top plate, the battery container in Between the bracket and housing, bracket is strip, battery radiating of being also more convenient for while fastening to the battery.

9th, connected between the top plate and bottom plate namely between the cell apparatus and lamp body by way of chute, make electricity Dismounting between pool device and lamp body is easier.

10th, concave part or lug boss are provided with the chute, in the bottom plate or top plate in setting and chute Concave part or the lug boss or concave part of lug boss matching, the lug boss are mutually spacing with concave part, make the bottom plate and top Annexation between plate is more firm.

【Brief description of the drawings】

Fig. 1 is a kind of dimensional structure diagram of solar street light.

Fig. 2 is a kind of configuration schematic diagram of solar street light.

Fig. 3 is the configuration schematic diagram of support and lamp stand.

Fig. 4 is the cooperation schematic diagram of the first support member, the second support member and lamp stand.

Fig. 5 is the stereochemical structure signal of the first Holder Fasteners, the second Holder Fasteners and the first engaging lug, the second engaging lug Figure.

Fig. 6 is fixed seat and the dimensional structure diagram of lamp stand.

Fig. 7 is the configuration schematic diagram of cell apparatus.

Fig. 8 is the dimensional structure diagram of housing.

Fig. 9 is the dimensional structure diagram of the variant embodiment of housing.

Figure 10 is the configuration schematic diagram of lamp body.

Figure 11 is the cooperation schematic diagram of the first side plate, the second side plate, solar panels and bottom plate.

Figure 12 is the cooperation schematic diagram of the 3rd side plate, the 4th side plate, solar panels and bottom plate.

Figure 13 is the cooperation schematic diagram of cell apparatus and bottom plate.

Figure 14 is the cooperation schematic diagram of the variant embodiment of cell apparatus and bottom plate.

Figure 15 is the cooperation schematic diagram of bottom plate and top plate.

Figure 16 is the cooperation schematic diagram of the variant embodiment of bottom plate and top plate.

Figure 17 is the cooperation schematic diagram of concave part and lug boss.

【Embodiment】

In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only to solve The utility model is released, is not used to limit the utility model.In all embodiments of the present utility model, upper and lower, left and right, The position such as front, back, inside, outside determiner is only limitted to the relative position in given view, rather than absolute position, is not used in and limits this reality With new.

Refer to Fig. 1-2, a kind of solar street light 10 of the present utility model, it includes supporting construction 20 and light fixture 30.Lamp Tool 30 can absorb solar energy, and convert the solar into electric energy, to store and/or provide illumination.The support of supporting construction 20 is solid Determine light fixture 30, light fixture 30 is lifted ground certain altitude and be illuminated.Supporting construction 20 includes lamp stand 11, support 13 and fixed seat 15.Light fixture 30 includes cell apparatus 17 and lamp body 19.

The lamp stand 11 is cylindric or elliptic cylindrical shape, and described one end of lamp stand 11 is connected to the light fixture 19 first Put；The one end of support 13 is removably connected to lamp stand 11, and the other end is removably connected to cell apparatus 17 or lamp body 19；Fixed seat 15 It is sheathed on the top of lamp stand 11 and is detachably connected with lamp body 19, expands Area of bearing of the lamp stand 11 to lamp body 19, strengthen lamp stand 11 To the support degree of lamp body 19 so that light fixture 30 can more firmly be installed on lamp stand 11.Cell apparatus 17 is removably connected to institute State lamp body 19, and the part or all of exposed lamp body 19 of cell apparatus 17.It is appreciated that fixed seat 15 can be omitted, by lamp Bar 11 is directly fixedly connected with lamp body 19 by screw thread also may be used.Due to lamp stand 11, support 13, fixed seat 15, cell apparatus 17 and Annexation is easy to each several part separating transport to be detachably connected between each several part of lamp body 19, device again after arriving at, Cost of transportation is saved, while convenient to each several part dismounting, maintenance and replacing.

Also referring to Fig. 3, the support 13 includes the first support member 131, the second support member 132, the first Holder Fasteners 133 and second Holder Fasteners 134.Described one end of first support member, 131 and second support member 132 is connected to the lamp stand 11, institute State the first support member 131 and the other end of the second support member 132 is connected to second and the 3rd position of the light fixture 30, it is described The first, the second, the three position forms triangle on the place surface of light fixture 30.That is the first support member 131, the second support member 132, lamp Bar 11 is connected to the surface of light fixture 30 and forms three tie points, and the line of three tie points between any two constitutes a triangle Shape.First support member 131, the second support member 132 constitute triangular support configurations with lamp stand 11 and support the light fixture 30, by triangle Light fixture 30 is firmly anchored on the supporting construction 20 by the stability of shape, the triangular support configurations, greatly reduces wind-force to light fixture 30 influence, extends the service life of the solar street light 10.It is appreciated that the support member of the first support member 131 and second 132 one end connected from lamp stand 11 can be connected to different Holder Fasteners, i.e., described first support member 131 is connected to lamp stand One end with and second support member 132 one end for being connected to lamp stand 11 may be at the different height position of lamp stand 11.

The Holder Fasteners 134 of first Holder Fasteners 133 and second, which cooperate, to be clamped on the lamp stand 11.It can manage Solution, the Holder Fasteners 134 of the first Holder Fasteners 133 and second can remove, the support member of the first support member 131 and second 132 one end is threadably secured also may be used in the lamp stand 11.Because the weight of light fixture 30 focuses primarily upon cell apparatus 17, therefore The other end of first support member 131 and the second support member 132 is directly arranged on cell apparatus 17, or is arranged at battery dress Put on the lamp body 19 on 17 peripheries, can effectively share the weight of cell apparatus 17, make the uniform force of supporting construction 20.

Also referring to Fig. 4, first support member 131 is bent to form the first supporting part with one end that light fixture 30 is connected 1311；Second support member 132 is bent to form the second supporting part 1321 with one end that light fixture 30 is connected, first supporting part 1311 Upper surface and the second supporting part 1321 upper surface parallel to the lower surface of light fixture 30, be arranged so that the first support member 131 There is maximum contact area with the second support member 132 and light fixture 30.It is appreciated that the support 13 can also include and first Support member 131, the structure of the second support member 132 similar the 3rd support member and the similar support member of more structures.

The support member 132 of first support member 131 and second is long laminated structure, and the first support member 131 itself is relative Two first sheets unilateral 1312, the second support member 132 also have two second relative sheets unilateral 1322, the first sheet is unilateral 1312 and second unilateral 1322 axle center substantially with lamp stand 11 of sheet it is coplanar.The support member 132 of first support member 131 and second There is the first radian section 1313 and the second radian section 1323, first radian section 1313 and the respectively in its own two sheet face The depression direction of two radians section 1323 is the direction away from light fixture 30.First radian section 1313 and the second radian 1323 pairs of lamps of section Tool 30 is applied to the first support member 131 and the weight of the second support member 132 plays cushioning effect.

Please refer to fig. 5, the Holder Fasteners 134 of the first Holder Fasteners 133 and second are in " " type structure, this two by Ω It is individual that " " type structural clamp is connected Ω in lamp stand 11, the both sides of 133 and second Holder Fasteners of the first Holder Fasteners 134 by screw threads for fastening Connect.For dismounting of being more convenient for, the Holder Fasteners 134 of the first Holder Fasteners 133 and second can also be that side is to be hinged, and opposite side is It is threadedly coupled or snaps connection.

Support 13 also includes the first engaging lug 135 and the second engaging lug 136 being arranged on the first Holder Fasteners 133.Should First engaging lug 135 connects the first radian section 1313 and the first Holder Fasteners 133, and second engaging lug 136 connects described Second radian section 1323 and the first Holder Fasteners 133.The engaging lug 136 of first engaging lug 135 and second is respectively provided with connecting hole, institute State the first radian section 1313 and first engaging lug 135 is threadedly connected to by connecting hole, the second radian section 1323 is by even Connect hole and be threadedly connected to second engaging lug 136.Meanwhile, the other end of first radian section 1313 and the second radian section 1323 connects Connect and connect the first supporting part 1311 and the second supporting part 1321 respectively.

It is appreciated that the position of the first engaging lug 135 and the second engaging lug 136 can be according to the first support member 131 and second The position of support member 132 is adjusted, and it is attached that the first engaging lug 135 and/or the second engaging lug 136 can also be arranged on the second support On part 134, the quantity of engaging lug can also be adjusted according to the quantity of support member.

Further referring to Fig. 6, the fixed seat 15 includes sleeve 151, the first reinforcer 152, the and of the second reinforcer 153 Fixed plate 154.The sleeve 151 is the cylindric or elliptic cylindrical shape matched with lamp stand 11, and the sleeve 151 is hollow structure, its It is set in the top of lamp stand 11.The reinforcer 153 of first reinforcer 152 and second is laminated structure, the He of the first reinforcer 152 The branch sleeve 151 of second reinforcer 153 and fixed plate 153 are fixed.Preferably, the reinforcer of the first reinforcer 152 and second 153 and sleeve 151 axle center it is coplanar.Multiple air ports 155 excessively are provided with first reinforcer 152 and the second reinforcer 153, with Reduce influence of the wind-force to solar street light 10.Fixed plate 154 is a panel construction, so that its upper surface has with the bottom surface of light fixture 30 There is larger contact area.

Also referring to Fig. 7, the cell apparatus 17 includes multiple brackets 171, battery 172, controller 173 and housing 174.The bracket 171 sets in " recessed " shape and is formed with recess 1711, and its bridging is fixed on the relative of the housing 174 Both sides.The battery 172 is contained between the bracket 171 and housing 174.

Also referring to Fig. 8, the housing 174 includes substrate 1741, swash plate 1742, riser 1743 and the top being sequentially connected Plate 1744.The swash plate 1742 is obliquely installed on substrate 1741, and riser 1743 is vertical with substrate 1741 and is arranged at swash plate On 1742, the top plate 1744 is parallel with the substrate 1741 and is arranged on riser 1743.The substrate 1741, swash plate 1742 A cell containing cavity is collectively forming with riser 1743, the battery containing chamber size is slightly larger than the size of battery 172, the battery containing The profile of the profile of chamber and the battery 172 is substantially matching, and the battery 172 is contained in the cell containing cavity and screens is tight Gu in the recess 1711 of bar 171.The housing 174 is detachably connected through the top plate 1744 with the lamp body 19.The fastening The two ends of bar 171 are also secured on the top plate 174.It is appreciated that the riser 1743 can remove, the swash plate 1742 is connected The top plate 1744 and substrate 1741 suitably increase the height of swash plate 1742 to form cell containing cavity of the opening in top plate.

Heat emission hole 1745 is set on the swash plate 1742 and/or substrate 1741, with more preferably to battery 172 and controller 173 radiatings.

In certain embodiments, the size of the substrate 1741 is less than the bottom size of battery 172, the battery 172 When being contained in the cell containing cavity, battery 172 is arranged between swash plate 1742, the bottom of battery 172 and the substrate 1741 Between form difference in height, to play more preferable waterproof effect.

Also referring to Fig. 9, in other embodiment, some ribs 1746, institute are provided with the substrate 1741 When stating battery 172 and being contained in the cell containing cavity, the bottom of the battery 172 fall within rib 1746 so that battery 172 it Difference in height is formed between bottom and substrate 1741, so as to reach more preferable waterproof effect, it will be understood that the rib 1746 can also It is some projections.

Also referring to Figure 10, the lamp body 19 includes bottom plate 191, solar panels 192, the first side plate 193, the second side plate 194th, the 3rd side plate 195, the 4th side plate 196, lamp 197, detector 198 and crossbeam 199.The bottom plate 191, solar panels 192nd, the side plate 194 of the first side plate 193 second, the 3rd side plate 195 and the 4th side plate 196 are collectively forming an accommodating cavity, by lamp 197 and detector 198 it is accommodating wherein.

Also referring to Figure 11-12, the first base tub 1931 and the first solar panels are provided with first side plate 193 It is provided with the second base tub 1941 and the second solar energy board slot 1942, the 3rd side plate 195 and sets on groove 1932, the second side plate 194 It is equipped with the 3rd base tub 1951 and the 3rd solar energy board slot 1952, the 4th side plate 196 and is provided with the 4th base tub 1961 and Four solar energy board slots 1962.First base tub 1931, the second base tub 1941, the 3rd base tub 1951 and the 4th base tub 1961 is common around base tub is formed, and the card of bottom plate 191 is set wherein.The first solar energy board slot 1932, the second solar panels Groove 1942, the 3rd solar energy board slot 1952 and the 4th solar energy board slot 1962 are jointly around solar energy board slot is formed, by the sun The energy card of plate 192 is set wherein.

Lamp 197 and detector 198 are fastenedly connected with bottom plate 191.The lamp 197 and foregoing solar panels 192 are electrically connected with the controller 173.The controller 173 is used to receive the electric energy of the transmission of solar panels 192 and by turning Change and be transferred to battery 172 and store, so that the night of solar energy lamp 10 uses.The detector 198 is used to detect on road whether have Pedestrian passes through, and when there is pedestrian to pass through on road, the detector 198 transmits a signal to controller 173, and controller 173 is according to detection The brightness enhancing for the signal control lamp 197 that device 198 is transmitted.When detector 198, which is not detected by road, has pedestrian to pass through, the detection Device 198 transmits a signal to controller 173, and the signal that controller 173 is transmitted according to detector 198 controls the brightness deterioration of lamp 197.Should Set-up mode is by detecting on road that whether having pedestrian changes the brightness of lamp 197, can effectively save the utilization of the energy.It is described Detector 198 can be human body infrared inductor or camera.The crossbeam 199 connects the bottom plate 191 and solar panels 192, increase the integral firmness of the lamp body 19.More select, the upper end of crossbeam 199 is connected with the solar panels 192, institute The lower end of crossbeam 199 is stated to be threadedly coupled and be threadedly coupled with the top plate 1744 through the bottom plate 191 with the bottom plate 191.

Also referring to Figure 13, in certain embodiments, bottom plate 191, solar panels 192, the first side plate 193, Two side plates 194, the 3rd side plate 195, the 4th side plate 196 formation accommodating cavity, set in the bottom plate 191 and are connected with the accommodating cavity Opening, the cell apparatus 17 is contained in the accommodating cavity by the opening portion and is threadedly connected to bottom plate 191, described The remainder of cell apparatus 17 is exposed to outside the bottom plate 191 through the opening.It is provided with the bottom plate 191 and top plate 174 Screwed hole is to realize threaded connection.It is preferred that, the upper end of crossbeam 199 is connected with the solar panels 192, the crossbeam lower end It is threadedly coupled and is threadedly coupled through the bottom plate 191 with the top plate 1744 with the bottom plate 191.

Also referring to Figure 14, in other embodiment, plane is higher than the electricity where the upper surface of top plate 174 Pond 172 and the top of controller 173, remove the bracket 171.The top plate 174 is connected through a screw thread with bottom plate 191.Now, Cell apparatus 17 is completely in the lower position of bottom plate 191, i.e. cell apparatus 17 and all exposes to the lamp body 19, so that electric The radiating effect of pool device 17 is more preferable, while cell apparatus 17 is prevented effectively from cell apparatus at utmost away from solar panels 192 17 are influenceed by the high temperature of solar panels 192, extend the service life of battery 172.

Also referring to Figure 15-16, in other embodiment, the one end of the bottom plate 191 and top plate 174 is set Chute 1911 is put, the top plate 174 and bottom plate 191 are fixed in the chute 1911 by slipping into.

Also referring to Figure 17, further, when chute 1911 is set on the bottom plate 191, set in the chute 1911 Put lug boss 1913 or concave part 1912, and setting and the projection of the chute 1911 set on bottom plate 191 on the top plate 174 Concave part 1912 or lug boss 1913 that portion 1913 or concave part 1912 are matched；Or chute 1911 is set on the top plate 174 When, lug boss 1913 or concave part 1912 are set on the chute 1911, and are set and top plate 174 on the bottom plate 191 The concave part 1912 or lug boss 1913 of lug boss 1913 or concave part 1912 matching of the chute 1911 of upper setting.The groove Portion 1912 and the quantity of lug boss 1913 can be adjusted to two or more according to actual conditions.

Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model Any modification made within the principle of utility model, equivalent substitution and improvement etc. should be included in protection model of the present utility model Within enclosing.

Claims (10)

1. a kind of light fixture, it is characterised in that：Including cell apparatus and lamp body, the cell apparatus includes housing and battery, described Housing formation cell containing cavity houses the battery, and the housing is removably connected to the lamp body, and the cell apparatus portion Divide or whole exposed lamp bodies.

2. a kind of light fixture as claimed in claim 1, it is characterised in that:The housing include be sequentially connected substrate, swash plate and Top plate, the top plate and substrate-parallel are set, and the swash plate connects the top plate and substrate to form battery of the opening in top plate Accommodating cavity, the housing is detachably connected through the top plate and lamp body.

3. a kind of light fixture as claimed in claim 2, it is characterised in that：Lamp body includes solar panels, relative with solar panels to set The bottom plate and crossbeam put, the crossbeam upper end are connected with the solar panels, and the crossbeam lower end is connected and passed through with the bottom plate The bottom plate is threadedly coupled with the top plate.

4. a kind of light fixture as claimed in claim 2, it is characterised in that：The cell apparatus also includes controller, the control Device is contained in the cell containing cavity.

5. a kind of light fixture as claimed in claim 4, it is characterised in that：Heat emission hole, institute are set on the swash plate and/or substrate Heat emission hole is stated to radiate to the battery and controller.

6. a kind of light fixture as claimed in claim 2, it is characterised in that：The size of the substrate is less than the bottom size of battery, The battery container is arranged in when the cell containing cavity between the swash plate, between the bottom of the battery and the substrate Form difference in height.

7. a kind of light fixture as claimed in claim 2, it is characterised in that：Multiple ribs are provided with the substrate and/or multiple Projection, the battery container when cell containing cavity, the bottom of the battery fall within the rib and/or it is raised upper so that The bottom of battery and bottom plate formation difference in height.

8. a kind of light fixture as claimed in claim 2, it is characterised in that：The housing further comprises multiple brackets, described Bracket is fixed on the top plate in " recessed " shape, the bracket two ends bridging, and the battery container is in the bracket Between housing.

9. a kind of light fixture as claimed in claim 1, it is characterised in that：The lamp body include bottom plate, the housing include substrate, Swash plate and top plate, top plate and substrate-parallel are set, and the swash plate connects the top plate and substrate to form electricity of the opening in top plate Pond accommodating cavity；Chute is set in the one of the bottom plate and top plate, and the top plate and bottom plate are fixed in the chute by slipping into.

10. a kind of light fixture as claimed in claim 9, it is characterised in that：When chute is set on the bottom plate, set in the chute Put lug boss or concave part, and set on the top plate that the lug boss of chute or concave part with being set on bottom plate match it is recessed Groove portion or lug boss；Or on the top plate during setting chute, lug boss or concave part are set on the chute, and described The concave part or lug boss for setting the lug boss of chute or concave part with being set on top plate to match on bottom plate.