CN205814240U - Shower doors - Google Patents

Abstract

This utility model relates to bathroom fixture fields, and provides a kind of shower doors, including dodge gate, dodge gate is fixed with at least one roller, and dodge gate and is fixed with at least one locating part；Shower doors also includes rail assembly, rail assembly includes a track, track is arranged on the lower section of roller, and track is fixed with closer, and closer includes fastener, the middle part of fastener is provided with the bayonet socket arranged upward, further, locating part includes a limited block and one anti-jump piece, and limited block is positioned at the top of track, and limited block can be fastened in the bayonet socket of fastener, the anti-jump piece of lower section being positioned at track.The shower doors that this utility model provides can effectively reduce impulsive force when dodge gate slides into extreme position, and can effectively prevent the situation of beating produced in dodge gate sliding process.

Description

Shower doors

Technical field

This utility model relates to bathroom fixture fields, especially relates to a kind of shower doors being arranged on shower house.

Background technology

People generally arrange shower house when fitting up in toilet now, and present shower house generally uses with glass plate Shower doors.Present shower doors is divided into two kinds of structures mostly, is the switch gate with track and hinged conjunction respectively Page door.

Overturning hinge door has a framework being made of metal, and is provided with glass plate in framework, and usual framework is provided with frame, Frame is fixed on wall, and the rotating shaft door with glass plate is fixed on frame, is achieved in consolidating of glass plate and fixed border Fixed.Generally, rotating shaft door is provided with rotating shaft, and glass plate is fixed in rotating shaft, and rotating shaft door can rotate around the shaft, thus realizes rotating shaft The opening and closing of door.

Switch gate has a framework being made of metal, and framework includes one or two tracks, and track is arranged on pouring The upper end of bath door or lower end, track is substantially arranged with ground level.Further, framework be respectively provided on two sides with a frame, Frame is arranged vertically with track, and frame is fixed with track and is connected.At least two pieces of glass plates, multiple pieces of glass plate it is provided with in framework Can be all can come and go in orbit slide movable glass plate, it is also possible to be there is at least one piece cannot be relative to rail The fastening glass panels that road slides, as arranged fastening glass panels, usual fastening glass panels is referred to as fixing door, then shower doors is at least wrapped Including one piece and can come and go the movable glass plate slided in orbit, usual movable glass plate is referred to as dodge gate.

In order to realize reciprocatingly sliding of dodge gate, generally setting two rollers on dodge gate, roller can be in orbit Slide, thus realize the opening and closing of dodge gate.Owing to the weight of dodge gate is relatively big, typically require use during opening and closing dodge gate bigger Strength promotes, but, owing to the weight of dodge gate is big, inertia is the biggest, when dodge gate opening and closing or closedown are to extreme position, lives Dynamic goalkeeper strikes on frame or on locating part, to dodge gate, frame and track to causing the biggest impact, if impact Power relatively big, dodge gate will may be caused to crush or the situation such as frame damage, affect the use of shower doors.

To this end, be provided with closer in orbit in existing a kind of shower doors, closer is provided with a fastener, and lives Dynamic door is provided with a locating part, and when dodge gate slides, locating part may slide in fastener, so, due to dodge gate Also need to during slip drive fastener to slide, increase the resistance that dodge gate slides, thus reduce dodge gate and slide into extreme position Time impulsive force, it is to avoid dodge gate or frame are caused damage.

But, dodge gate sliding process is easily beated in the vertical direction, causes dodge gate to come off from track, impact The use safety of shower doors.

Utility model content

In order to solve above-mentioned problem, main purpose of the present utility model is to provide one it can be avoided that dodge gate is from track On the shower doors of impulsive force that produces when coming off and can reduce dodge gate opening and closing.

For realizing above-mentioned main purpose, the shower doors that this utility model provides includes dodge gate, and dodge gate is fixed with At least one locating part it is fixed with at least one roller, and dodge gate；Shower doors also includes rail assembly, and rail assembly includes Article one, track, track is arranged on the lower section of roller, and track is fixed with closer, and closer includes fastener, in fastener Portion is provided with the bayonet socket arranged upward, and, locating part includes a limited block and one anti-jump piece, and limited block is positioned at track Top, and limited block can be fastened in the bayonet socket of fastener, the anti-jump piece of lower section being positioned at track.

One preferred scheme is, locating part also includes locating part body, and limited block and anti-jump piece lay respectively at locating part The two ends of body, limited block and anti-jump piece all extend to away from track side from locating part.

Further scheme is that locating part body is provided with adhesive piece near track side, and adhesive piece is fitted in track On surface.

Further scheme is, locating part body is provided with two screwed holes, and screw is through screwed hole and by locating part It is fixed on dodge gate.

Further scheme is, the circumference of roller is provided with a circle groove, and groove is set with in orbit, and anti-jump piece with Distance between track lower wall is less than the degree of depth of the groove of roller.

Further scheme is, track be respectively arranged at two ends with a closer, and be equipped with one on each closer Individual fastener.

Further scheme is, closer also includes the body of strip, and this is the most internal is provided with a slide rail, and fastener can be Reciprocatingly slide in slide rail, and one end of slide rail is provided with shrinkage pool, is in tilted layout with body when fastener slides at shrinkage pool, and engaging One fixture block of part is positioned at shrinkage pool.

The fastener that the shower doors that this utility model provides is provided with on closer, and closer in orbit is provided with card Mouthful, when dodge gate slides into extreme position, the limited block of locating part will slide in bayonet socket, thus reduces the slip of dodge gate Speed, by the cushioning effect of fastener Yu locating part, can be prevented effectively from dodge gate and cause the biggest to frame and track Impulsive force, thus avoid the damage of dodge gate, track.Further, locating part is additionally provided with anti-jump piece, and anti-jump piece is positioned under track Side, so, by being positioned at the common effect of the limited block above track and anti-jump piece be positioned at below track, can avoid activity Door comes off from track.

Additionally, due to limited block and the anti-jump piece of two ends laying respectively at locating part body, dodge gate slides when, prevent Jump the dodge gate that prevents that block can be better upwards to beat, so that it is guaranteed that the smooth sliding of dodge gate.It addition, locating part is by two Individual screw is fixed on dodge gate, so that it is guaranteed that locating part will not rotate relative to dodge gate, also ensure limited block, anti-jump piece And relative position relation between track.

Further, owing to fastener can reciprocatingly slide on the slide rail of closer, so, reciprocatingly slide process at dodge gate In, fastener slides with locating part, and after dodge gate slides into certain position, locating part i.e. slides in the bayonet socket of fastener, The sliding speed of dodge gate will be reduced locating part slips into bayonet socket when, and after locating part slips into bayonet socket, dodge gate will also need to Driving fastener in the internal slip of basis of closer, therefore the sliding speed of dodge gate slows down, thus effectively reduces dodge gate pair The impact that frame causes.

Additionally, one end of slide rail is provided with shrinkage pool, when fastener slides into the end of slide rail, fastener is obliquely installed, so Be conducive to limited block to slip in the bayonet socket of fastener, be also beneficial to when dodge gate slides to opening direction limited block from bayonet socket Skid off.

Accompanying drawing explanation

Fig. 1 is the structure chart that this utility model shower doors embodiment is arranged in shower house.

Fig. 2 is the STRUCTURE DECOMPOSITION figure of this utility model shower doors embodiment.

Fig. 3 is the schematic enlarged-scale view of roll wheel assembly in this utility model shower doors embodiment.

Fig. 4 is the schematic enlarged-scale view of a locating part in this utility model shower doors embodiment.

Fig. 5 is the schematic enlarged-scale view of another locating part in this utility model shower doors embodiment.

Fig. 6 is the STRUCTURE DECOMPOSITION figure of this utility model shower doors embodiment middle orbit assembly.

Fig. 7 is the STRUCTURE DECOMPOSITION figure at another visual angle of this utility model shower doors embodiment middle orbit assembly.

Fig. 8 is the schematic enlarged-scale view of closer in this utility model shower doors embodiment.

Fig. 9 is the partial structurtes enlarged drawing in this utility model shower doors embodiment.

Figure 10 is closer and locating part schematic enlarged-scale view in the first state in this utility model shower doors embodiment.

Figure 11 is closer and locating part schematic enlarged-scale view in the second condition in this utility model shower doors embodiment.

Below in conjunction with drawings and Examples, the utility model is described in further detail.

Detailed description of the invention

Shower doors of the present utility model is arranged in shower house, sees Fig. 1, and the shower doors of the present embodiment includes that a fan is movable Door 10 and the fixing door 20 of a fan, dodge gate 10 is provided with rail assembly 40, dodge gate 10 and fixing door with the upper end of fixing door 20 20 both sides being separately positioned on rail assembly 40, as shown in Figure 1, dodge gate 10 is positioned at rail assembly 40 near paper direction Side, fixing door 20 is positioned at the rail assembly 40 side away from paper direction.Further, dodge gate 10 is parallel with fixing door 20 sets Putting, fixing door 20 is fixed relative to rail assembly 40, and dodge gate 10 can reciprocatingly slide relative to rail assembly 40.

Seeing Fig. 2, the upper end of dodge gate 10 is provided with two through holes 11, and two through holes 11 lay respectively at the left and right of dodge gate 10 The upper end of both sides.Dodge gate 10 is provided with two groups of roll wheel assemblies 30, and each group of roll wheel assembly 30 is fixed on by a through hole 11 On dodge gate 10.Seeing Fig. 3, roll wheel assembly 30 has a roller 31, and roller 31 is the most cylindrical, and the circumference of roller 31 Being provided with a circle groove 32, the roller 31 external diameter at groove 32 is less than the external diameter of both sides side-walls.

The middle part of roller 31 is additionally provided with a through hole 33, and axle 36 is through through hole 33, and roller 31 can be mutually countershaft 36 around roller The axis of 31 rotates.Being provided with internal thread hole in axle 36, screw 35 screws in axle 36.Further, screw 35 passes on dodge gate 10 Through hole 11 screw in the internal thread hole of axle 36 again, therefore roll wheel assembly 30 is fixed on dodge gate 10 by through hole 11.Preferably Ground, is provided with bearing in roller 31.

Be provided with through hole 12 in the lower section of through hole 11, locating part 13 is fixed on dodge gate 10 by screw 18 through through hole 12 On.Seeing Fig. 4, locating part 13 includes a substantially spacing body 14 in zigzag, is provided with circle in the side of spacing body 14 Two pieces of adhesive pieces 15, the middle part of locating part 13 is provided with two screwed holes 16, is provided with female thread in screwed hole 16.Locating part 13 sets Put at dodge gate 10 near the side of rail assembly 40.As it is clear from fig. 2 that screw 18 through through hole 12 and screws in locating part 13 In two screwed holes 16, thus locating part 13 is fixed on dodge gate 10.

Locating part 13 has limited block 17 and anti-jump piece 18, and limited block 17 is positioned at the upper end of locating part 13, anti-jump piece 18 It is positioned at the lower end of locating part 13.As seen from Figure 4, limited block 17 and anti-jump piece 18 two ends laying respectively at locating part 13, and spacing Block 17, anti-jump piece 18 be all from locating part body 14 to away from track 40 side extend.Preferably, limited block 17, anti-jump piece 18 are all vertically arranged with locating part body 14.

As it is clear from fig. 2 that locating part 13 is positioned at the lower section of dodge gate 10 one roll wheel assembly 30 of left upper end, and limited block 17 In the top of track 40, and anti-jump piece 18 lower section being positioned at track 40.

Being additionally provided with another locating part 64 on dodge gate 10, see Fig. 5, locating part 64 has locating part body 65, and Locating part 64 is provided with and is positioned at the limited block 68 of locating part 64 upper end and is positioned at anti-jump piece 69 of locating part 64 lower end, limited block 68, anti-jump piece 69 two ends laying respectively at locating part 64, and it is each perpendicular to locating part body 64.Further, locating part 64 is provided with Two pieces of adhesive pieces 66, the middle part of each piece of adhesive piece 66 is provided with screwed hole 67, use screw through the through hole on dodge gate 10 with And locating part 64 i.e. can be fixed on dodge gate 10 by screwed hole 67.Owing to locating part 64 is provided with two screwed holes 67, permissible Guarantee that locating part 64 will not rotate relative to dodge gate 10.Further, locating part 64 is positioned at one roller group of dodge gate 10 upper right side The lower section of part 30.

The upper end of fixing door 20 is provided with a through hole 21, and screw 22 can be through the fixing door 20 of through hole 21 and realization and rail Fixing of road assembly 40.Being provided with wall fixture 23 in the side of fixing door 20, wall fixture 23 has the end being fitted on metope Wall, diapire upwardly extends formation pair of sidewalls to the side of fixing door 20, forms groove 24, the one of fixing door 20 between diapire and sidewall Side is inserted into groove 24.Preferably, the diapire of wall fixture 23 is provided with through hole, use screw or rivet etc. through through hole and Wall fixture 23 is fixed on metope.Certainly, fixing door 20 can also be fixed on metope by such as glass clamp etc..

Rail assembly 40 includes the track 41 of a strip, sees Fig. 6 and Fig. 7, and track 41 is the rectangular-shaped of hollow Section bar, its cross section is rectangle.Being provided with a screwed hole 43 on track 41, the middle part of installation base 42 is provided with through hole, Screw 22 passes through hole 21 and the through hole through installation base 42, screws in the screwed hole 43 of track 41, thus realizes fixing Door 20 is fixing with track 41.Owing to through hole 21 is arranged on the upper end of fixing door 20, therefore track 41 is fixed on fixing door 20 Upper end.

Rail assembly 40 also includes the wall set 45 being arranged on track 41 two ends, and wall set 45 is substantially in rectangular-shaped, and wall overlaps 45 Being provided with briquetting 46 near the side of wall, briquetting 46 is provided with through hole 47, and using screw to pass through hole 47 can be by solid for briquetting 46 It is scheduled on metope.Further, the end of track 41 is inserted in wall set 45, forms a cavity 44, track 41 in wall set 45 End be inserted in cavity 44, the end of track 41 so can be avoided directly to be connected to cause on metope the damage of metope Bad.Wall set 45 roof be provided with screwed hole 28, wall is overlapped 45 28 ends with threaded hole and is enclosed within briquetting 46, thus by wall set 45 with Briquetting 46 is fixed.Preferably, the upper end of briquetting 46 is provided with a set of groove, uses screw 29 screw in screwed hole 28 and stretch into groove In, it is possible to wall set 45 is fixed on metope.

In order to wall set 45 is fixed on the end of track 41, the roof at wall set 45 is provided with screwed hole 48, and bolt 49 is permissible Screwing in screwed hole 48, after bolt 49 screws in screwed hole 48, the lower end of bolt 49 can be connected to the upper of the end of track 41 Surface, thus fixing being connected of realizing between track 41 and wall set 45.Preferably, bolt 49 is hexagon socket head cap screw, i.e. bolt 49 Middle part be provided with the hole of interior hexagonal.

Track 41 is provided with two mounting grooves 50, is provided with a closer 51 in each mounting groove 50, such as Fig. 8 institute Showing, closer 51 includes the body 52 of a strip, body 52 be respectively arranged at two ends with a through hole 53, at each mounting groove 50 Upper wall be provided with two through holes 61, after closer 51 is installed to mounting groove 50, use screw closer 51 is fixed on peace In tankage 50.Certainly, closer 51 can also be fixed in mounting groove 50 by rivet.Owing to closer 51 is arranged on mounting groove In 50, therefore the major part of closer 51 will be blocked by track 41, not affect the aesthetic property of shower house switch gate, and closer The installation of 51 is very convenient.

Being provided with a fastener 55 on closer 51, fastener 55 has two fixture blocks 56,58, two fixture blocks 56,58 Lay respectively at one bayonet socket 60 of formation between the two ends of fastener 55, and two fixture blocks 56,58.As it is shown in figure 9, on dodge gate 10 The limited block 17 of locating part 13 can snap onto in bayonet socket 60, the therefore form fit of the shape of bayonet socket 60 and limited block 17. In the present embodiment, limited block 17 is rectangular-shaped, and therefore bayonet socket 60 is rectangle, in order to clamped by limited block 17.

Owing to, in dodge gate 10 sliding process, limited block 17 can slip in fastener 55, it is also possible to from fastener 55 Skidding off, smooth and easy in order to ensure limited block 17 slips into and skids off, and a part for the lateral surface of two fixture blocks 56,58 is arranged to tiltedly Face, such as, the lateral surface of fixture block 56 has inclined-plane 57, and inclined-plane 57 is from the inner side of the lateral fixture block 56 of fixture block 56 from top to bottom It is obliquely installed.Identical, the lateral surface of fixture block 58 has inclined-plane 59, and inclined-plane 59 is from the inner side of the lateral fixture block 58 of fixture block 58 It is obliquely installed from top to bottom.

Further, the upper end of closer 51 is provided with chute 62, in fastener 55 is arranged on chute 62 and can be at chute 62 Inside reciprocatingly slide.Be provided with shrinkage pool 54 in one end of chute 62, as seen from Figure 8, shrinkage pool 54 is arranged on one end of chute 62, namely One end in the middle of closer 51.As shown in Figure 10, when fastener 55 slides at shrinkage pool 54, fastener 55 will be with body 52 It is obliquely installed, and, fastener 55 is fully located in shrinkage pool 54 near the fixture block 58 of shrinkage pool 54.Therefore, the cross section of shrinkage pool 54 Amass the cross-sectional area that have to be larger than fixture block 58, and the degree of depth of shrinkage pool 54 is also greater than the degree of depth of fixture block 58 slide downward.So, Limited block 17 is conducive to slip into bayonet socket 60 or skid off from bayonet socket 60.

Further, anti-jump piece 18 lower section being positioned at track 41, it is installed to fixing door 20 and dodge gate 10 is pacified at rail assembly 40 After installing to position, roller 31 is above track 41, and the groove 32 of roller 31 is sleeved on outside track 41, namely groove 32 both sides Outer wall lays respectively at outside track 41.So, roller 31 can roll on track 41, thus realizes the round cunning of dodge gate 10 Dynamic.Further, anti-jump piece 18 lower section at track 41 of locating part 13, the bayonet socket 60 of the fastener 55 of closer 51 is arranged upward, And the part of closer 51 only bayonet socket 60 is exposed at outside track 41, the major part of closer 51 is all hidden in track 41, Make shower house switch gate more attractive in appearance.Additionally, the distance between anti-jump piece 18 of locating part 13 and track 41 lower wall is less than roller The degree of depth of the groove 32 of 31, such that make dodge gate 10 be lifted up, anti-jump piece 18 of locating part 13 will be connected to track 41 Lower wall, thus avoid disengaged above from track 41 of roller 31.In dodge gate 10 sliding process, due to fastener 55 and limit The position-limiting action of position part 13, can avoid roller 31 to skid off from the two ends of track 41, also it is avoided that dodge gate 10 is from track 41 Depart from.

When dodge gate 10 slides to the position closed from the position opened, namely shown in Fig. 1, dodge gate 10 is from Time slip to the position of the leftmost side in the position on right side, as shown in Figure 10, in the starting stage, locating part 13 is positioned at the right side of fastener 55 Side, and fastener 55 slides into the rightmost side of body 52, that is to say and slides at shrinkage pool 54, therefore fastener 55 inclines with body 52 Tiltedly arrange.

When dodge gate 10 slides to the left, locating part 13 is moved to the left with dodge gate 10, and slides at bayonet socket 60.Due to Fastener 55 is obliquely installed, and therefore the positive stop end of locating part 13 can slide in bayonet socket 60 swimmingly.Further, due to fixture block 58 Lateral surface there is inclined-plane 59, in advantageously the positive stop end in locating part 13 slips into bayonet socket 60.Along with dodge gate 11 continue to Left slip, fastener 55 slides, as shown in figure 11 under the drive of the positive stop end of locating part 13 to the left.When fastener 55 slides into During the leftmost side of chute 62, fastener 55 will be unable to continue to slide to the left, and dodge gate 10 also slides into the limit position of range Put, the position that i.e. dodge gate 10 is closed.

Visible, in dodge gate 10 closing process, the positive stop end of locating part 13 is by the bayonet socket 60 sliding into fastener 55, when After the limited block 17 of locating part 13 slips into bayonet socket 60, owing to dodge gate 10 also needs to drive fastener 55 to slide, work can be reduced The speed that dynamic door 10 slides, thus reduce the impulsive force produced when dodge gate 10 is closed, it is to avoid frame, track etc. are caused shadow Ring.

Optionally, fastener 55 forms certain damping when sliding in chute 62, such as, arrange antivibrator in chute 62, Thus effectively slow down the fastener 55 sliding speed in chute 62, it is possible to what preferably reduction dodge gate 10 produced when closing rushes Hit power.Or, bolster is set in the leftmost side of chute 62, such as sponge, soft rubber etc., it is also possible to reduce dodge gate 10 and slide Impulsive force to extreme position.

Preferably, closer 51 be the body 52 of flexible closer, i.e. closer 51 or fastener 55 hard by plastics etc. Spend relatively low material to make, also so be able to reduce the impulsive force produced when dodge gate 10 is closed, prevent dodge gate 10 fortune at a high speed Situation that is dynamic and that cause dodge gate 10 to be easily damaged occurs.

Owing to track 41 is provided with two groups of closers 51, when dodge gate 10 slides from left to right, locating part 64 spacing In the bayonet socket 60 of the fastener 55 that block 68 also can slide into the closer 51 on right side, it is ensured that dodge gate 10 slides into the limit to the right During position, impulsive force is less.Further, by the common effect of anti-jump piece 18,69 of two locating parts 13,64, it can be ensured that movable Door 10 sliding processes are beated less.

Certainly, above-described embodiment be only this utility model preferred embodiment, during actual application, this utility model is also Having more change, such as, shower house switch gate is not provided with fixing door, but arranges two fan dodge gates, the most each fan dodge gate On be equipped with roll wheel assembly and locating part, accordingly, track is provided with two groups of different closers, each group of closer and one Locating part on fan dodge gate coordinates.Additionally, the shape of the limited block of locating part can be triangle, regular hexagon etc. multiple not Same shape, accordingly, the shape of bayonet socket is also configured to the shape identical with locating part, and such change also can realize this practicality Novel purpose.

From the sliding process of shower doors it can be seen that the simple in construction of shower doors switch gate, and aesthetic property is good, at dodge gate When sliding into extreme position, speed can be substantially reduced, thus avoid dodge gate produce bigger impulsive force and to dodge gate, rail Roads etc. cause damage.

Shower doors of the present utility model use parts less, assemble difficulty less, can in shower house Assembling, And the sliding distance of the fastener of closer can regulate according to the actual sliding distance of dodge gate, meet the use of different occasion Demand.

Claims (10)

1. shower doors, including

Dodge gate, described dodge gate is fixed with at least one roller, and described dodge gate and is fixed with at least one locating part；

Rail assembly, described rail assembly includes a track, and described track is arranged on the lower section of described roller, on described track Being fixed with closer, described closer includes that fastener, the middle part of described fastener are provided with the bayonet socket arranged upward；

It is characterized in that:

Described locating part includes a limited block and one anti-jump piece, and described limited block is positioned at the top of described track, and institute State limited block can be fastened in the described bayonet socket of described fastener, the described anti-jump piece of lower section being positioned at described track.

Shower doors the most according to claim 1, it is characterised in that:

Described locating part also includes locating part body, and described limited block and described anti-jump piece lay respectively at described locating part body Two ends, described limited block and described anti-jump piece all from described locating part to away from described track side extend.

Shower doors the most according to claim 2, it is characterised in that:

Described locating part body is provided with adhesive piece near described track side, and described adhesive piece is fitted in the surface of described track On.

4. according to the shower doors described in Claims 2 or 3, it is characterised in that:

Described locating part body is provided with two screwed holes, and screw is through described screwed hole and is fixed on by described locating part described On dodge gate.

5. according to the shower doors described in any one of claims 1 to 3, it is characterised in that:

The circumference of described roller is provided with a circle groove, and described groove is set with on the track.

Shower doors the most according to claim 5, it is characterised in that:

Distance between described anti-jump piece and described track lower wall is less than the degree of depth of the described groove of described roller.

7. according to the shower doors described in any one of claims 1 to 3, it is characterised in that:

Being respectively arranged at two ends with on a described closer, and each described closer of described track is equipped with a described engaging Part.

8. according to the shower doors described in any one of claims 1 to 3, it is characterised in that:

Described closer also includes the body of strip, and described internal is provided with a slide rail, and described fastener can be at described slide rail Inside reciprocatingly slide.

Shower doors the most according to claim 8, it is characterised in that:

One end of described slide rail is provided with shrinkage pool, is in tilted layout with described body when described fastener slides at described shrinkage pool, and One fixture block of described fastener is positioned at described shrinkage pool.

10. according to the shower doors described in any one of claims 1 to 3, it is characterised in that:

Being provided with mounting groove in described track, described closer is arranged in described mounting groove, and the fixture block of described fastener prolongs Reach the top of described track.