Guide rail, in particular for guiding sliding door component

Abstract

A guide rail (4) for receiving and guiding a carriage is disclosed, the guide rail comprising a guide rail body (41) having a first longitudinal end and a second longitudinal end. The rail body comprises a longitudinally extending clearance channel (413) delimited by a wall of the rail body. The clearance channel is open at a first longitudinal end of the rail body. The guide rail further comprises a stopper (42) at a first longitudinal end, comprising a cross bar and two legs, the cross bar extending transversely to the longitudinal direction of the clearance channel, the two legs extending transversely to the longitudinal direction of the clearance channel and transversely to the cross bar and spaced apart, the stopper forming a frame enclosing a window and having an opening at an edge of the window opposite to the cross bar. The stop is displaceable on the rail body between at least two lateral positions perpendicular to the crossbar and transverse to the rail body. In at least one of the at least two lateral positions, the crossbar at least partially overlaps the clearance channel, and in at least a second position, the window of the stopper at least partially overlaps the clearance channel.

Description

Technical Field

[0001] The present disclosure relates to a guide rail for receiving and guiding a carriage. More specifically, the present disclosure relates to a guide rail for guiding a sliding door member including a carriage. Also disclosed is a sliding door arrangement including the guide rail disclosed herein, and a draft shield, such as a draft shield for a balance, including the sliding door arrangement. The present invention relates to the subject matter described in the claims. Background Art

[0002] Draft shields are common in precision weight measurements. Their purpose is to protect the weighing pan and the object to be weighed from external influences, such as agitated air, which in turn exerts forces on the weighing pan and the object to be weighed and thus has a negative impact on the measurement accuracy. It is easy to understand that the greater the influence of agitated air on the measurement or weight determination, the lower the determined weight.

[0003] When the draft shield is placed on the balance, it requires a door to gain access to its interior. This interior is also called the weighing chamber. The weighing pan and the object to be weighed are enclosed in the weighing chamber and are therefore protected from external influences. Sliding door components are often used with draft shields and offer several advantages that are not discussed within the framework of this article.

[0004] Sometimes, for cleaning or other purposes, it may be necessary to remove the door member of the draft shield. Particularly on sliding door members, the sliding mechanism of the door may become dirty, which may hinder the impact-free operation of the door member, among other potential adverse effects.

[0005] Therefore, it would be advantageous to provide a device that can securely secure a sliding door member to a sliding mechanism during normal operation, while also allowing the door member to be easily removed from or reinstalled into the sliding mechanism.

[0006] US8,198,553B1 discloses a windshield for a balance, comprising a rear wall, a track extending forward from the top corner of the rear wall, and the track includes a track for a top cover panel and two side walls. A locking element is arranged at the front end of the track. The top cover panel is slidably mounted on a corresponding track in the track. The windshield also includes two side walls, each of which is slidably mounted in a corresponding track of the track. A base is provided for receiving a portion of the front wall, wherein the bottom edge of the front wall is inserted into the base. The front wall is fixed flush with the top cover panel and the side walls by a locking element. When the locking element for locking the front wall is released, the side wall and / or the top cover panel can be pulled forward out of the front end of the track through the corresponding track, thereby being completely separated from the rest of the assembly. According to the teachings of US2021 / 156731A1, an electronic balance with a windshield is disclosed, which has a door member that can be opened and closed automatically and smoothly. In the housing, the end of the side opposite to the end of the side protruding from the contact portion is the gripping portion to be grasped when inserting and extracting the engaging member. The hole formed is orthogonal to the side wall portion of the housing, and a pair of left and right locking pins are arranged in the hole. The two locking pins are powered by an elastic body (such as a coil spring between the locking pins) so as to protrude to the outside of the side wall portion. The locking pins protrude outward under the action of the coil spring, engage with the locking recess, and fix the engaging member at the position of the locking recess. In this state, the contact portion of the flat plate does not engage with the bottom plate component, and the wind shield can be removed from the balance body. According to the teaching of EP2856091A1, the wind shield includes a side panel, a fastening lock, a vertical support at the rear of the weighing chamber, and a weighing chamber structure supported on the support. The weighing chamber is locked by a fastening lock located in a structure including a track for the top panel and the side panel. First, unscrew the nut or screw, which holds the angle bracket that protects the rear edge of the top panel to prevent it from sliding out. In the embodiment where the nut is mounted in the top structure, there is a threaded spindle for tightening the nut. After removing the angle bracket, a space is formed, and the cushion can pass under this space when sliding. After sliding out the top panel, the back panel is unlocked and can be removed from the groove of the base chamber without applying force.

[0007] It is not difficult to see from the above description that in the art, it is a rather complicated task to remove a door from a draft shield and reinstall it on the draft shield, requiring a large amount of manual operations. Therefore, it is preferred that the door member can be easily removed from the draft shield and reinstalled on the draft shield. Summary of the invention

[0008] One object of the present disclosure is to provide the subject matter mentioned at the outset. More specifically, the invention provides a guide rail for receiving and guiding a carriage, which on the one hand allows a door element of a draft shield to be easily removed from and mounted to the draft shield, and on the other hand allows the door element to be securely locked to the guide rail or to the draft shield, respectively, during operation.

[0009] This is achieved by the subject matter of claim 1 .

[0010] Further effects and advantages of the disclosed subject matter, whether explicitly mentioned or not, will become apparent from the disclosure provided hereinafter.

[0011] Therefore, the present invention discloses a guide rail for receiving and guiding a carriage. The guide rail can be a linear guide rail in particular. The guide rail can also be referred to as a track containing a guide rail. The trolley equipped with the guide rail can be a carriage containing wheels or a sliding wheel so as to roll on the guide rail of the guide rail. However, in other embodiments, the guide rail can also be configured to receive a carriage without wheels so that the carriage slides on the guide rail of the guide rail. The guide rail comprises a guide rail body having a first longitudinal end and a second longitudinal end. The guide rail body comprises a longitudinally extending clearance channel bounded by a wall of the guide rail body. The longitudinally extending clearance channel opens at the first longitudinal end of the guide rail body. In addition, the guide rail also comprises a stopper, which terminates the guide rail at the first longitudinal end of the guide rail body. The stopper comprises a crossbar and two legs extending from the crossbar. The crossbar extends transversely to the longitudinal direction of the clearance channel, and the legs extend transversely to the longitudinal direction of the clearance channel and transversely to the crossbar. In particular, the legs can extend at least substantially perpendicular to the crossbar. There is a gap between the legs, in particular defining a clear width between the legs. Thus, the stopper forms a frame enclosing a window, wherein the stopper has an opening on an edge of the window transversely opposite to the crossbeam, thereby defining an open side of the stopper. The size of the gap is such that a carriage received in the clearance channel of the guide rail body can pass through the gap between the two legs. The size of the window is designed to allow a carriage received in the clearance channel of the guide rail body to pass through the gap between the two legs. The stopper can be moved between at least two transverse positions on the guide rail body at least substantially perpendicular to the crossbar and transverse to the guide rail body or its longitudinal extension. In at least one of the at least two transverse positions, the crossbar overlaps at least partially with the clearance channel of the guide rail body or its cross section, respectively. In at least the second of the at least two transverse positions, the window of the stopper overlaps at least partially with the clearance channel of the guide rail body. The stopper and its lateral movability are configured in some aspects such that in at least one first lateral position, the crossbar, due to the overlap of the cross-sectional portion of the guide rail body channel, limits the passability of the clearance channel at the first longitudinal end of the guide rail body, thereby retaining at least a portion of the carriage for receiving and guided by the guide rail in the guide rail body. However, in at least one second lateral position, the carriage portion can be displaced through the clearance opening of the clearance channel at the first longitudinal end of the guide rail body. In a specific embodiment, it can be provided that the crossbar of the stopper does not overlap the cross-sectional portion of the clearance channel of the guide rail in at least one second position. More specifically, it can be provided that the leg is laterally offset from the lateral edge of the clearance channel when viewed from a cross-sectional view or a longitudinal view of the guide rail body, respectively. Therefore, in at least one second lateral position of the stopper on the guide rail body, the cross-sectional portion of the clearance channel of the guide rail body is completely open at the first longitudinal end of the guide rail body, that is, there is no overlap between the stopper and the cross-sectional portion of the clearance channel of the guide rail body.

[0012] At the second longitudinal end of the guide rail body, the clearance channel of the guide rail body can be permanently closed.

[0013] It should be noted that, within the framework of the present disclosure, the use of the indefinite article "a" or "first" does not denote singularity, nor does it exclude the presence of a plurality of named components or features. Therefore, the indefinite article should be understood as "at least one" or "one or more".

[0014] Furthermore, it should be noted that in this application, the terms "adjacent", "bordering" and "adjacent" as well as "adjacent", "bordering" and "adjacent" are considered synonyms.

[0015] It can be provided that the guide rail body has a longitudinal extension groove on at least one longitudinal surface of the guide rail body. Therefore, the guide rail body is provided with at least one longitudinal extension groove. At least one longitudinal extension groove passes through the wall of the guide rail body, so that the clearance channel of the guide rail body is open at least one of the at least one longitudinal surfaces of the guide rail body. The longitudinal extension groove extends in particular in the longitudinal direction of the guide rail body. The crossbar of the stopper is transversely opposite to the first longitudinal extension groove of the at least one longitudinal extension groove, which passes through the wall of the guide rail body. Therefore, the first longitudinal extension groove is located on the side of the guide rail opposite to the crossbar of the stopper. The first longitudinal extension groove is open at the first longitudinal edge of the longitudinal surface on which it is located and is close to the first longitudinal end of the guide rail body, so that the longitudinal extension groove is connected to the opening of the clearance channel of the guide rail body at the first longitudinal end of the guide rail body where the stopper is arranged.

[0016] The guide rail body may be polygonal in cross section, wherein a first longitudinally extending slot of the guide rail body, which is arranged on the side of the guide rail opposite to the crossbar of the stop, passes through the wall of the guide rail body and is laterally bounded by at least one crosspiece. The at least one crosspiece may be at least one residual wall section of a surface of the guide rail body. The inner side surface of at least one crosspiece or each at least one crosspiece may form at least one guide rail for supporting the carriage. The guide rail body may be rectangular or quadrilateral in cross section, wherein the corners of the guide rail body cross-sectional shape may be rounded or chamfered.

[0017] The first longitudinal end of the guide rail body is formed so that the longitudinal terminal edge of the guide rail body on one side of the opening edge of the window provided with the stopper is set back relative to the longitudinal terminal edge of the guide rail body on one side of the crossbar provided with the stopper.

[0018] In an embodiment, the stop and the guide rail body comprise at least one pair of functionally interacting means by which the stop is guided in a transverse displacement direction of the stop relative to the guide rail body when the stop is mounted on the guide rail body. It can be provided that the displaceability of the stop relative to the guide rail body is purely in the transverse direction, whereby the stop is correspondingly fixed relative to the guide rail body in the longitudinal direction.

[0019] In a further non-limiting embodiment, the stop is laterally displaceable between a first transverse end position and a second transverse position, wherein the crossbar of the stop overlaps the clearance channel of the rail body to a greater extent at the first transverse end position than at the second transverse position. As described above, more specifically, at least one second transverse position includes a transverse position in which the crossbar of the stop does not overlap the clearance channel of the rail body.

[0020] The attachment arrangement of the stopper to the guide rail body can be adjusted and configured so that when the stopper moves from the first transverse end position to the second transverse position, a restoring force directed to the first transverse end position acts on the stopper. In this way, the stopper is forced to return to the first transverse end position under the action of the restoring force. To this end, in a more specific aspect, the guide rail body and the stopper include at least one inclined surface section located on one of the guide rail body and the stopper. A corresponding support feature is provided on the other of the guide rail body and the stopper, and when the stopper is mounted on the guide rail body, the corresponding support feature is configured to contact with one of the at least one inclined surface section. At least one inclined surface section is inclined along the transverse displacement direction of the stopper relative to the guide rail body, that is, parallel to the direction. When the stopper is laterally displaced from the first transverse end position, the at least one inclined surface section and the corresponding support feature are jointly configured to cause the stopper to be elastically deformed, thereby generating a restoring force when the stopper is laterally displaced from the first transverse end position.

[0021] A sliding door device is also disclosed, comprising a door member and any type of guide rail described above. A first edge of the door member is provided with a carriage. The carriage is adjusted and configured to be received in a clearance passage of the guide rail body. The stopper is configured to: in at least one locking position of the stopper, the stopper blocks the clearance passage to prevent at least a portion of the carriage from passing through the open end of the clearance passage at the first longitudinal end of the guide rail body, thereby being configured to keep at least a portion of the carriage in the clearance passage of the guide rail body, and in at least one release position of the stopper, allowing the entire carriage to pass through the open end of the clearance passage at the first longitudinal end of the guide rail body. The locking position and the release position can particularly be the lateral position of the stopper relative to the guide rail body. The plate of the door member can extend from the carriage and pass through the longitudinally extending groove on the longitudinally extending surface of the guide rail body. At least one locking position of the stopper can include the above-mentioned first lateral end position, and at least one release position of the stopper can include at least one of the above-mentioned at least one second lateral position of the stopper.

[0022] The carriage comprises at least two wheels configured to be supported on and roll on at least one crosspiece, the at least one crosspiece laterally defining the edge of a longitudinally extending slot on the longitudinally extending surface of the guide rail body. In some specific embodiments, the carriage may comprise exactly two wheels, asymmetrically arranged on one side of the carriage. In other embodiments, at least two wheels may be arranged on a first side of the carriage, and at least one wheel may be arranged on an opposite side of the carriage. In a more specific embodiment, the carriage may comprise at least two pairs of wheels arranged at least substantially coaxially. In a more specific embodiment, the carriage may comprise exactly two pairs of wheels arranged at least substantially coaxially.

[0023] In another aspect, a windshield is disclosed, which includes a sliding door device as described above, wherein the sliding door device provides a sliding door member of the windshield. More specifically, a guide rail can be arranged on the top side of the sliding door device, wherein the sliding door member is suspended on the guide rail, and a carriage is supported by at least one of at least one crosspiece, and at least one crosspiece laterally defines the edge of a longitudinally extending groove on the longitudinally extending surface of the guide rail body. The first longitudinally extending groove can be arranged on the side of the guide rail opposite to the crossbar of the stopper. The plate of the door member and the first longitudinally extending groove of the guide rail body can be configured together to allow the plate of the door member to move in the first longitudinally extending groove of the guide rail body. The sliding door device can particularly include a door member with a carriage, and the carriage includes wheels, which are configured to be supported on at least one crosspiece and roll thereon. It is easy for a technician to understand the clear position or direction of "top", "bottom" or "side" related to the windshield, because the windshield has a clear direction, it is used with a balance, and the balance certainly has a clear top and bottom direction, which is regulated by the function of the balance.

[0024] The draft shield may further comprise means for guiding a second edge of the door member, the second edge being opposite to the first edge of the door member comprising the carriage. The means for guiding the second edge of the door member may be particularly configured to limit movement of the second edge of the door member in the longitudinal direction of the guide rail and to inhibit vertical movement of the door member when the door member is suspended by the carriage received in the guide rail.

[0025] It is understood that the features and embodiments disclosed above can be combined with each other. It is further understood that within the scope of the present disclosure and the claimed subject matter, more embodiments can be conceived, which are obvious to the skilled person through the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The subject matter of the present disclosure will now be explained in more detail by means of selected exemplary embodiments shown in the accompanying drawings. In the drawings:

[0027] Figure 1An exemplary embodiment of a draft shield having a sliding door is shown;

[0028] Figure 2 A longitudinal section through a guide rail for a sliding door is shown, with a portion of the carriage retained within the guide rail body;

[0029] Figure 3 A cross-sectional view of a guide rail conduit showing an exemplary embodiment of a guide rail body;

[0030] Figure 4 A cross-sectional view showing a stopper on the guide rail outer frame of the guide rail body in a locked position;

[0031] Figure 5 A longitudinal section of a guide rail for a sliding door is shown with a portion of the carriage located within the guide rail body and a stop member in a released position;

[0032] Figure 6 A cross-sectional view showing a stopper on a guide rail body in a released position;

[0033] Figure 7 shows a longitudinal section of a guide rail for a sliding door with the carriage removed from the guide rail and the stop in a released position;

[0034] Figure 8 A longitudinal section of a guide rail for a sliding door is shown with a carriage inserted into the guide rail body; and

[0035] Fig. 9 A cross-sectional view of a rail conduit is shown of another exemplary embodiment of a rail body.

[0036] It goes without saying that the drawings are highly schematic and that details not necessary for illustrative purposes may be omitted for ease of understanding and description. It should also be understood that the drawings show only selected, illustrative embodiments, and that embodiments not shown may still be fully within the scope of the subject matter disclosed and / or claimed herein. DETAILED DESCRIPTION

[0037] Figure 1An exemplary embodiment of a weighing system 1 is shown, which includes an exemplary embodiment of a balance 2 and a draft shield 3. The balance 2 includes a housing 21, in which, for example, a load cell and electronic components are housed. In addition, the front of the balance 2 also includes a display screen and an operator control panel 22. The load cell is a transducer that converts a mechanical input signal from an item to be weighed on a weighing pan into an electrical signal. It is understood that the draft shield 3 is a separate component that can be selectively attached to the balance 2 and can also be removed from the balance 2. In the exemplary embodiment shown, the housing of the draft shield 3 includes a front wall 31, a rear wall 32, a top wall 33, and side door members 34 and 38, which are part of the housing of the draft shield 3. The door member 38 is arranged on one side of the housing of the draft shield 3, which is not visible in this description, but it is easy for a skilled person to understand that the door member 38 is a mirror image of the door member 34 and is arranged on the opposite side of the housing of the draft shield 3 from the door member 34. Front wall 31, rear wall 32 and top wall 33 are supported and maintained by the pillars at the four corners of the housing of wind shield 3, and only pillar 371 can be seen in this figure. The side door comprising door members 34 and 38 is a sliding door, which is opened and closed by the sliding motion guided by guide rails, such as opened and closed by the upper guide rail 4 and lower guide rail 36 of door member 34 and the upper guide rail 5 of door member 38, wherein the lower guide rail of door member 38 is not visible in this figure. Side door member 34 is guided slidably in upper guide rail 4 and lower guide rail 36. Side door member 38 is guided slidably in the lower guide rail of upper guide rail 5 and door member 38. Door members 34 and 38 are used to selectively close wind shield 3, thereby weighing chamber is wrapped in the housing of wind shield 3, and open wind shield 3 to provide the passage into weighing chamber. In this figure, door member 34 is in open position, and door member 38 is in closed position. In addition, a power supply and signal transmission terminal 39 is provided on the back of the balance 2. As described below, the door member 34 is suspended in the upper rail 4 by a carriage 35 received in the rail 4. In the present embodiment, when the door member 34 is in the open position, the carriage 35 can extend out of the rail 4 at the longitudinal end of the rail 4. The rail 4 includes a rail body 41 and a stopper 42, which terminates the rail 4 at the first longitudinal end of the rail body 41, which will be described in detail below. Similarly, the rail 5 includes a rail body 51 and a stopper 52, which terminates the rail 5 at the first longitudinal end of the rail body 51. Although the rail 5 is not explicitly outlined, the functional design of the rail 5 can be easily understood by the technician through the following overview of the design and function of the rail 4.

[0038] Now refer to Figure 2 . Figure 2 is along Figure 1 A cross-sectional view of a portion of the windshield 3 taken along the plane AA and the sight line direction. Figure 2The interior of the guide rail 4 is shown, with the first portion 355 of the carriage 35 located in the clearance channel of the guide rail body 41. The guide rail 4 is supported by pillars 372 and 373, which are arranged at the corners of the housing of the draft shield 3. The door member 34 is in the maximum open position. The stopper 42 is in the locked position, and the first portion 355 of the carriage 35 is retained in the guide rail body 41. The stopper 42 includes a locking plate 421, which overlaps the clearance channel 413 of the guide rail body 41 or the cross section of the clearance channel 413 respectively at least partially when the stopper is in the locked position. The shoulder of the first portion 355 of the carriage 35 adjacent to the second portion 356 of the carriage 355 abuts against the locking plate 421, so that the locking plate 421 of the stopper 42 can prevent the door member 34 from moving further in the opening direction while retaining the first portion 355 of the carriage 35 in the guide rail 4. The carriage 35 is configured as a sliding wheel including wheels 351 and 352. The guide rail body 41 in this embodiment includes a guide rail outer frame 411 and a guide rail pipe 412. The cross section of the guide rail body 41 is as follows: Figure 3 As shown. The guide rail conduit 412 is inserted into the guide outer frame 411. The guide outer frame 411 is substantially U-shaped in the exemplary embodiment and includes an open longitudinally extending surface of the guide outer frame 411. The guide rail conduit 412 forms a wall of a clearance channel 413 that bounds the guide body 41. A longitudinal surface of the guide rail conduit 412 located on one side of the opening of the guide outer frame 411 constitutes a longitudinal surface of the guide body 41 and includes a longitudinally extending groove 414. The longitudinally extending groove 414 extends and opens at the longitudinal surface of the guide rail conduit 412, and therefore also opens at the first longitudinal end of the guide body 41, where the stopper 42 is provided. The longitudinally extending groove 414 is defined by an edge of a crosspiece 415. The crosspiece 415 is used to support the guide rail conduit 412 within the guide rail conduit. Figure 2The wheels 351 and 352 shown in the figure are provided with guide rails of the guide rails on their inner surfaces. The wheels 351 and 352 can be supported and configured to roll on the crosspiece 415. The plate 341 of the door member 34 extends through the longitudinally extending slot 414 and can move in the longitudinal direction of the guide rail 4 and the guide rail body 41. It can be understood that the door member 34 is suspended on the guide rail 4 asymmetrically. Therefore, when the door member 34 is suspended by the slide 35, the wheels 351 and 352 are supported on the crosspiece 35, the plate 341 of the door member 34 is tilted, and the lower end of the plate 341 faces one side of the door member 34, and the wheels 351 and 352 are supported on the crosspiece 415 on this side. The guide rail 4 is mounted on the shell of the wind shield 3 so that the crosspiece 415 is arranged on the inner side relative to the shell of the wind shield 3, and the longitudinally extending slot 414 is biased to the outer side relative to the shell of the wind shield 3. Therefore, the lower edge of the plate 341 of the door member 34 is biased toward the center of the housing of the wind shield 3. This in turn helps to reduce the residual gap between the plate 341 of the door member 34 and the housing fixed wall of the wind shield 3, thereby further enhancing the sealing of the wind shield 3 when the doors 34 and 38 are closed, thereby protecting the weighing room inside the wind shield 3 from external influences. In other embodiments, a method such as Fig. 9 The edge of the longitudinally extending groove 414 of the guide rail pipe 412 shown is defined by two crosspieces 415 and 416. If two wheels 351 and 352 are asymmetrically mounted on one side of the carriage 35, they can be inserted into the clearance channel 413 of the guide rail body 41, and the wheels 351 and 352 are supported on the crosspiece located on the inner side relative to the shell of the wind shield 3 among the two crosspieces 415 and 416, which can effectively improve the sealing performance. Fig. 9 In other embodiments shown including the guide rail body 41, at least one additional wheel may be mounted on the other side of the carriage 35. The wheels 351 and 352 may be configured to support and roll on the first crosspieces 415 and 416, while the at least one additional wheel disposed on the other side of the carriage 35 may be configured to support and roll on the other crosspieces 415 and 416. In this way, the door member 34 may be suspended symmetrically by the wheels supported on the two crosspieces 415 and 416.

[0039] from Figure 2 It can be clearly seen in the figure that when the stopper 42 is in the locked position, the second part 356 of the slide 35 can leave the guide rail body 41 through the remaining opening (i.e., the clearance opening) of the clearance channel 413 at the first longitudinal end of the guide rail body 41, and of course can also return to the guide rail body 41. The first part 355 of the slide 35 is retained in the guide rail body 41. Therefore, the door member 34 is firmly retained by the guide rail, which on the one hand determines the maximum opening position of the door member 34, and on the other hand, when the door member 34 is opened, the door member 34 will not be accidentally removed from the guide rail, or when the reference Figure 1 In the embodiment of FIG. 1 , the wind shield 3 is removed therefrom.

[0040] However, if the door member needs to be removed for cleaning or other purposes, the subject matter disclosed herein allows for convenient removal and reinstallation of the door member, without tools and easily by hand. On the other hand, when the carriage (at least a portion thereof) is located in the guide rail and, in a specific implementation, when the door member is connected to the draft shield, the subject matter disclosed herein ensures safe locking of the door member. This is because the stopper can be moved between at least two lateral positions on the guide rail body, perpendicular to the crossbar and transverse to the guide rail body. For a complete understanding, see Figure 4 .like Figure 4 As shown, the stopper 42 includes a crossbar 422 and two legs 423 and 424 extending from the crossbar 422. The stopper 42 forms a frame surrounding the window. The stopper 42 has an opening at the edge of the window transversely relative to the crossbar 422, thereby defining an open side of the stopper. The movability of the stopper 42 relative to the guide rail body is perpendicular to the crossbar 422. The locking plate 421 is part of the crossbar 422. The stopper 42 is received on the guide rail body 41, and in the exemplary embodiment is received on the guide rail outer frame 411. Figure 4 4 shows the stop position of the stop member 42, wherein the crossbar 422 including the locking plate 421 overlaps the clearance channel 413 or its projection at least partially. In other words, the crossbar 422 including the locking plate 421 limits the passability of the clearance channel 413 at the first longitudinal end of the guide rail body 41. In the locked position, the overlapping portion is configured as follows: Figure 2, the shoulder of the first portion 355 of the carriage 35 located in the clearance channel 413 abuts against the crossbar 422 or the locking plate 421, respectively, to at least partially limit the passability of the clearance channel 413 at the first longitudinal end of the rail body 41. The rail outer frame 411 of the rail body 41 includes two inclined surface sections 415 and 416, which taper toward the side where the opening edge of the stopper 42 is located. The stopper 42 includes corresponding support features 425 and 426, which contact the corresponding inclined surface sections 419 and 420, respectively, when the stopper 42 is mounted on the rail body 41, or more specifically, when it is mounted on the rail outer frame 411 in the present exemplary embodiment. Through the following description, it will be easier for us to understand that when the stopper 42 is displaced toward the cross bar 422, the overlap between the locking plate 421 and the clearance channel 413 is reduced. In other words, the clearance opening of the clearance channel 413 at the first longitudinal end of the guide rail body 41 is increased, thereby finally allowing the clearance opening of the clearance channel 413 for the first part 355 of the slide 35 to pass through at the first longitudinal end of the guide rail body 41. In addition, it is not difficult to understand that when the stopper 42 moves laterally toward the cross bar 422 relative to the guide rail outer frame 411, the corresponding support features 425 and 426 will slide in the same direction along the inclined surface sections 419 and 420. Therefore, the legs 423 and 424 will open and undergo elastic deformation. Due to the above-mentioned elastic deformation, when the stopper 42 is released, the legs 423 and 424 interact with the inclined surface sections 419 and 420 through the corresponding support features 425 and 426 to generate a restoring force. Therefore, the stopper 42 will return to Figure 4 In the first transverse end position shown, the cross bar 422 abuts against the guide rail body 41 or the guide rail outer frame 411 .

[0041] The guide rail outer frame 411 further includes end stop shoulders 417 and 418 for limiting the lateral displacement of the stop member 42 relative to the guide rail body 41 toward the cross bar 422 and determining a second lateral end position of the stop member 42 .

[0042] Figure 5 and Figure 6 Shows Figure 2 and Figure 4 The arrangement of the device in FIG. 4 when the stopper 42 is in the released position. Figure 5 As shown, the first portion 355 of the carriage 35 can pass through the locking plate 421 at the longitudinal end of the guide rail body 41 and through the clearance opening of the clearance channel 413. Figure 6 It can be seen that in this release position, the locking plate 421 of the crossbar 422 does not overlap with the clearance channel, so that the clearance opening of the clearance channel 413 is not blocked at the longitudinal end of the guide rail body 41. Figure 6In the release position shown, the corresponding support features 425 and 426 of the stop member 42 abut against the end stop shoulders 417 and 418 of the guide rail outer frame 411. Therefore, the lateral position of the stop member 42 shown in the figure is the second lateral end position. In some embodiments, the locking plate 421 can still have a certain degree of overlap with the clearance channel 413 at the second end position as long as the remaining clearance opening of the clearance channel 413 at the first longitudinal end of the guide rail body 41 is of a size that allows the first portion 355 of the slide 35 to pass through the locking plate 421 at the longitudinal end of the guide rail body 41 and through the clearance opening of the clearance channel 413. Figure 7 4 shows how the first part 355 of the carriage 35 passes through the clearance opening of the clearance channel 413 at the first longitudinal end of the guide rail body 41. It can be seen that one edge of the crossbar or locking plate 421 is supported on the edge 357 of the first part 355 of the carriage 35. Therefore, once the operator Figure 2 The situation shown begins to move the stopper 42 to the release position, and the shoulder 413 of the first portion 355 of the slide 35 adjacent to the second portion 356 of the slide 35 is clear of the clearance channel 413, and the stopper 42 is supported on the edge 357 of the first portion 355 of the slide 35. Therefore, the operator no longer needs to actively hold the stopper 42 in the release position, but can free both hands to operate the door member 34.

[0043] refer to Figure 8, how to reinsert the carriage 35 into the guide rail 41 is shown, so that the door member 34 is reconnected to the wind shield in the embodiment. The guide rail duct 412 is shorter than the guide rail outer frame 411. Therefore, the guide rail body 41 is formed so that the longitudinal terminal edge of the side of the opening edge of the guide rail body 41 provided with the stopper 42 is rearwardly disposed relative to the longitudinal terminal edge of the side of the cross bar of the guide rail body 41 provided with the stopper 42. Therefore, the part of the adjacent first longitudinal end of the guide rail body 41 is open along the longitudinal side part opposite to the cross bar of the guide rail body. Therefore, the operator can insert the carriage 35 (wheel 352 is located thereon) into the opening part of the longitudinal side opposite to the cross bar of the adjacent first longitudinal end of the guide rail body 41. The operator can further insert the plate 341 of the door member 34 into the longitudinal extension groove of the guide rail body 41, which is opposite to the cross bar of the stopper 42. Subsequently, the operator can support the end of the slide 35 on the guide rail provided by the crosspiece of the guide rail body 41, which defines the edge of the longitudinally extending groove. Like this, by the tilting movement of the door member 34, the stopper 42 can be moved laterally to the open position and maintained by the edge 357 of the slide 35 until the first part 355 of the slide 35 enters the guide rail body 41 completely. After the first part 355 of the slide 35 is inserted into the guide rail body 41 and is completely received by the guide rail body 41, the stopper 42 will automatically return to the locked position due to the restoring force generated by the above-mentioned inclined surface section. Like this, the door member 34 is safely locked on the guide rail again, or in a specific implementation, is locked on the wind shield accordingly. In the whole process, the operator does not need to operate the stopper 42 by hand, so the door member 34 can be easily operated with both hands.

[0044] Understandably, Figure 1 The guide rails 5 and the door members 38 in the embodiment are designed in a similar manner.

[0045] Although the subject matter of the present disclosure has been explained by exemplary embodiments, it should be understood that these embodiments are by no means intended to limit the scope of the claims of the present invention. It is understood that the claims cover embodiments that are not explicitly shown or disclosed herein, and embodiments disclosed by exemplary embodiments that deviate from the present disclosure will still be covered by the claims.

[0046] Reference numerals list

[0047] 1 Weighing system

[0048] 2 Balance

[0049] 3 Windshield

[0050] 4 Upper rail

[0051] 5 Upper rail

[0052] 21 Balance housing

[0053] 22. Control Panel

[0054] 31 Front wall of windshield

[0055] 32 Rear wall of windshield

[0056] 33 Top wall of windshield

[0057] 34 Door components

[0058] 35 Slide

[0059] 36 lower rail

[0060] 38 Door components

[0061] 39 Transmission Terminal

[0062] 41 Guide rail body

[0063] 42 stopper

[0064] 51 Guide rail body

[0065] 52 guide rail body

[0066] 341 Door component plate

[0067] 351 Wheel

[0068] 352 Wheels

[0069] 355 First part of the carriage

[0070] 356 Second part of the carriage

[0071] 357 Edge of first section of carriage

[0072] 371 Pillar

[0073] 372 Pillar

[0074] 373 Pillar

[0075] 411 rail frame

[0076] 412 Rail Pipe

[0077] 413 Clearance channel of guide rail body

[0078] 414 longitudinal extension slot

[0079] 415 Crossbar

[0080] 416 Crossbar

[0081] 417 End Stop Shoulder

[0082] 418 End Stop Shoulder

[0083] 419 inclined surface segment

[0084] 420 inclined surface section

[0085] 421 Locking Plate

[0086] 422 Stopper crossbar

[0087] 423 Stopper Leg

[0088] 424 Stopper Leg

[0089] 425 Corresponding support features

[0090] 426 Corresponding support features

Claims

1. A guide rail (4) configured to receive and guide a carriage (35), the guide rail comprising a guide rail body (41) having a first longitudinal end and a second longitudinal end, The guide rail body (41) comprises a longitudinally extending clearance channel (413), the clearance channel being bounded by the wall of the guide rail body (41), in, The longitudinally extending clearance channel (413) opens at a first longitudinal end of the guide rail body (41), The guide rail (4) also includes a stopper (42) terminating the guide rail at a first longitudinal end of the guide rail body (41), the stopper including a crossbar (422) and two legs (423, 424) extending from the crossbar, the crossbar (422) extending transversely to the longitudinal direction of the clearance channel (413), the legs (423, 424) extending transversely to the longitudinal direction of the clearance channel (413) and transversely to the crossbar, with a gap between the two legs, whereby the stopper (42) forms a frame surrounding a window, wherein the stopper also has an opening at an edge of the window transversely opposite to the crossbar (422), thereby defining an open side of the stopper, The stop member (42) is capable of shifting between at least two lateral positions on the guide rail body (41) perpendicularly to the cross bar (422) and transversely to the guide rail body (41), wherein in at least one of the at least two lateral positions, the cross bar at least partially overlaps with the clearance channel of the guide rail body, and in at least the second of the at least two lateral positions, the window of the stop member at least partially overlaps with the clearance channel of the guide rail body.

2. The guide rail according to claim 1, in, The guide rail body (41) has a longitudinal extension groove (414) in at least one longitudinal surface of the guide rail body, so that the guide rail body is provided with at least one longitudinal extension groove, at least one of the at least one longitudinal extension groove extends through the wall of the guide rail body, so that the clearance channel of the guide rail body is open at at least one of the at least one longitudinal surface of the guide rail body, wherein the cross bar (422) of the stopper is also arranged to be transversely opposite to the first longitudinal extension groove of the at least one longitudinal extension groove, the first longitudinal extension groove extends through the wall of the guide rail body, and the first longitudinal extension groove is arranged on the side of the guide rail opposite to the cross bar (422) of the stopper (42), wherein the first longitudinal extension groove is open at the first longitudinal edge of the longitudinal surface where it is located, and the first longitudinal edge faces the first longitudinal end of the guide rail body provided with the stopper.

3. The guide rail according to claim 2, in, The cross section of the guide rail body (41) is polygonal, wherein a first longitudinally extending groove (414) of the guide rail body arranged on the side of the guide rail opposite to the cross bar (422) of the stopper (42) is arranged to pass through the wall of the guide rail body and is laterally defined by at least one cross piece (415, 416).

4. Guide rail according to any one of the preceding claims, in, The first longitudinal end of the guide rail body (41) is formed so that the longitudinal terminal edge of the guide rail body on the side opposite to the cross bar (422) of the stopper (42) is rearward relative to the longitudinal terminal edge of the guide rail body on the side of the cross bar provided with the stopper.

5. Guide rail according to any one of the preceding claims, in, The stopper (42) and the guide rail body (41) comprise at least one pair of functionally interacting devices, by which the stopper is guided in a lateral displacement direction of the stopper relative to the guide rail body.

6. Guide rail according to any one of the preceding claims, in, The displaceability of the stop element (42) relative to the guide rail body (41) is purely in the transverse direction, the stop element being fixed relative to the guide rail body in the longitudinal direction of the guide rail body.

7. Guide rail according to any one of the preceding claims, in, The stopper (42) is capable of being laterally displaced between a first lateral end position and a second lateral position, wherein the degree of overlap between the cross bar (422, 421) of the stopper and the clearance channel (413) of the guide rail body (41) at the first lateral end position is greater than the degree of overlap between the cross bar and the clearance channel at the second lateral position.

8. The guide rail according to claim 6 or 7, in, The attachment of the stopper (42) to the guide rail body is adjusted and configured so that when the stopper moves from the first lateral end position to the second lateral position, a restoring force directed toward the first lateral end position acts on the stopper.

9. The guide rail according to claim 8, in, The guide rail body (41) and the stopper (42) include at least one inclined surface section (415, 416) on one of the guide rail body and the stopper, and corresponding support features (425, 426) on the other of the guide rail body and the stopper, and when the stopper (42) is mounted on the guide rail body (41), the corresponding support feature is configured to be able to contact with a corresponding one of the at least one inclined surface section, wherein the at least one inclined surface section is inclined along the lateral displacement direction of the stopper relative to the guide rail body, and the at least one inclined surface section and the corresponding support feature are jointly configured to enable the stopper to elastically deform when the stopper is laterally displaced from a first lateral end position, so as to generate a restoring force when the stopper is laterally displaced from the first lateral end position.

10. A sliding door arrangement comprising a door member (34) and a guide rail (4) according to any one of the preceding claims, in, The door member (34) is provided with a slide (35) at a first edge of the door member, and the slide is adjusted and configured to be received in the clearance channel (413) of the guide rail body (42), wherein the stopper (42) is configured so that in at least one locking position of the stopper (42), the stopper blocks the clearance channel to prevent at least a portion of the slide from passing through the open end of the clearance channel (413) at the first longitudinal end of the guide rail body (41), thereby being configured to be able to keep at least a portion of the slide in the clearance channel of the guide rail body, and the stopper is also configured to allow the entire slide to pass through the open end of the clearance channel (413) at the first longitudinal end of the guide rail body in at least one release position of the stopper.

11. The sliding door device according to claim 10, in, The guide rail (4) is a guide rail according to any one of claims 7 to 9, wherein at least one locking position of the stop (42) includes a first lateral end position of the stop (42), and at least one release position of the stop (42) includes at least one of at least one second lateral position of the stop.

12. The sliding door device according to claim 10 or 11, in, The guide rail (4) is a guide rail according to claim 3 or a guide rail according to any one of claims 4 to 9 when dependent on claim 3, wherein the slide (35) comprises at least two wheels (351, 352), and the at least two wheels are configured to be able to support and roll on at least one crosspiece (415, 416).

13. A draft shield (3) comprising a sliding door arrangement according to any one of claims 10 to 12, the sliding door arrangement providing a sliding door of the draft shield.

14. The windshield according to claim 13, in, Guide rail (4) Yes A guide rail according to claim 3 or any one of claims 4 to 9 when dependent on claim 3, wherein the guide rail (4) is arranged on the top side of the sliding door arrangement, whereby the sliding door member (34) is suspended on the guide rail (4), and the slide (35) is supported by at least one of the at least one crosspiece (415, 416), and the at least one crosspiece defines the edge of a first longitudinally extending slot in the guide rail body, wherein the plate (341) of the door member and the first longitudinally extending slot (414) of the guide rail body are jointly configured to allow the plate of the door member to move in the first longitudinally extending slot of the guide rail body.

15. A windshield according to claim 13 or 14, in, The draft shield comprises means (36) for guiding a second edge of the door member (34) opposite to a first edge of the door member comprising the carriage (35).

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