CN217601293U - Barrier gate device for parking lot - Google Patents

Abstract

The utility model provides a road brake device for a parking lot, which comprises two support columns and a parking rod mechanism, wherein the two support columns are arranged at intervals, and a channel for vehicles to pass through is formed between the two support columns; at least one of the two support columns is provided with a parking rod mechanism, and the parking rod mechanism is in pivot connection with the support column; when the parking rod mechanism is positioned in the channel and is in a horizontal position, the channel is in a closed state; when the parking lever mechanism is located on the support column side and close to the support column, the passage is in an open state. The utility model provides a be used for the problem in the open air banister device be not suitable for high limited place among the prior art.

Description

Barrier gate device for parking lot

Technical Field

The utility model relates to a vehicle import and export storehouse control technical field particularly, relates to a banister device for parking area.

Background

With the increase of vehicles, urban land space is gradually regionalized by roads, and barrier devices are installed in most of companies, shopping malls, communities, high-speed entrances and the like, so that the vehicles can be controlled to enter and exit.

However, for some indoor or underground parking lots, the existing barrier gate devices for the outdoor are not suitable for the places with limited height due to the limitation of the height of the place.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a barrier gate device for a parking lot to solve the problem that the outdoor barrier gate device used in the prior art is not suitable for highly restricted places.

In order to achieve the purpose, the utility model provides a barrier gate device for a parking lot, which comprises two support columns and a parking rod mechanism, wherein the two support columns are arranged at intervals, and a channel for vehicles to pass through is formed between the two support columns; at least one of the two support columns is provided with a parking rod mechanism, and the parking rod mechanism is in pivot connection with the support column; when the parking rod mechanism is positioned in the channel and is in a horizontal position, the channel is in a closed state; when the parking lever mechanism is located on the support column side and close to the support column, the passage is in an open state.

Furthermore, the number of the parking rod mechanisms is two, the two parking rod mechanisms are arranged on the two support columns in a one-to-one correspondence mode, and the connecting positions of the two parking rod mechanisms and the two support columns are located at the same height.

Furthermore, the parking rod mechanism comprises a driving swing arm and an extension arm, and the first end of the driving swing arm is pivotally connected with the support column; the extension arm is pivotally connected with the second end of the driving swing arm, the extension arm is provided with an extension position which rotates to form a first included angle A with the driving swing arm, and the extension arm is provided with a storage position which rotates to form a second included angle B with the driving swing arm; wherein, when the passageway is in the closed condition, first contained angle A is 180, and when the passageway was in the open mode, second contained angle B satisfied: b is more than or equal to 0 degree and less than or equal to 90 degrees.

Further, at least one roller is arranged on the extension arm to be in rolling contact with the ground.

Further, the driving swing arm is telescopically arranged along the length direction thereof.

Further, the driving swing arm comprises a plurality of sleeves, and at least two adjacent sleeves in the plurality of sleeves are arranged in a drawable mode to prolong or shorten the length of the driving swing arm.

Furthermore, the driving swing arm is provided with a first hollow area, the parking rod mechanism further comprises a first stop plate, an elastic piece and a telescopic arm, and the first stop plate is arranged in the first hollow area and extends along the section direction of the driving swing arm; the elastic piece is arranged in the first hollow area, and the first end of the elastic piece is abutted against the first stop plate; at least one part of the telescopic arm extends into the first hollow area, and the second end of the elastic piece is abutted with the telescopic arm; when the extension arm is at the storage position, the elastic piece is in a compressed state; when the extension arm is switched from the storage position to the extension position, the elastic piece provides acting force for the telescopic arm so that the telescopic arm extends out of the first hollow area.

Furthermore, the telescopic arm is provided with a second hollow area, a second stop plate is arranged in the second hollow area, and the second end of the elastic piece is abutted against the second stop plate.

Furthermore, the second stop plate is provided with an avoiding through hole, the parking rod mechanism further comprises a guide rod, the first end of the guide rod is connected with the first stop plate, the second end of the guide rod penetrates through the avoiding through hole, the elastic piece is a spring, and the spring is sleeved on the outer peripheral side of the guide rod.

Further, the parking lot barrier gate device further comprises a driving portion, the driving portion is arranged on the supporting column, the parking rod mechanism further comprises a connecting rod mechanism, and a driving shaft of the driving portion is in driving connection with a crank of the connecting rod mechanism.

Furthermore, the first end of a connecting rod of the connecting rod mechanism is hinged with the crank, and the second end of the connecting rod is hinged with the driving swing arm.

Further, parking area is with banister device still includes the stopper, and the stopper setting is on the support column, and the stopper has the backstop face, and when the passageway was in the open mode, parking rod mechanism rotated to the position department with backstop face butt.

By applying the technical scheme of the utility model, a barrier gate device for a parking lot is provided, when a parking rod mechanism rotates along the direction close to a supporting column at the same side and exits from a channel, the channel is switched from a closed state to an open state; when parking rod mechanism rotates to the passageway in and be in horizontal position along the direction of keeping away from the support column of homonymy, the passageway is switched to the closed condition by open mode, like this, make parking rod mechanism be the pivoted downwards, can not occupy the great space in passageway top, thereby ensure that the banister device for parking area that this application provided can be applicable to highly restricted place, in addition, because parking rod mechanism rotates downwards when opening the passageway, can get into in pedestrian's the sight, avoid the pedestrian because of not noticing the rotation of parking rod mechanism and by the accidental injury.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the scope of the invention. In the drawings:

fig. 1 is a schematic structural view showing a state in which a parking lever mechanism of a barrier gate apparatus for a parking lot according to an alternative embodiment of the present invention closes a passage;

fig. 2 is a structural view showing a state that the parking lever mechanism of fig. 1 opens the passage;

fig. 3 is a schematic view showing a specific structure of the parking lever mechanism on the right side in fig. 2.

Wherein the figures include the following reference numerals:

1. a ground surface; 10. a support pillar; 11. a channel; 20. a parking lever mechanism; 21. driving the swing arm; 211. a first hollow region; 22. an extension arm; 221. a roller; 23. a first stopper plate; 24. an elastic member; 25. a telescopic arm; 251. a second hollow region; 252. a second stopper plate; 26. a guide bar; 27. a link mechanism; 271. a crank; 272. a connecting rod; 30. a drive section; 40. a limiting block; 50. a rotation stopping structure.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In order to solve the problem that is used for open air banister device among the prior art to be not suitable for highly restricted place, the utility model provides a banister device is used in parking area.

As shown in fig. 1 to 3, the barrier gate device for a parking lot includes two support columns 10 and a parking rod mechanism 20, the two support columns 10 are arranged at intervals, and a passage 11 for a vehicle to pass through is formed between the two support columns 10; at least one support column 10 of the two support columns 10 is provided with a parking rod mechanism 20, and the parking rod mechanism 20 is pivotally connected with the support column 10; wherein, when the parking lever mechanism 20 is located in the passageway 11 and in a horizontal position, the passageway 11 is in a closed state; when the parking lever mechanism 20 is located on the side of the support column 10 and close to the support column 10, the passage 11 is in an open state.

When a parking rod mechanism 20 rotates in a direction close to a support column 10 on the same side and exits a channel 11, the channel 11 is switched from a closed state to an open state; when the parking rod mechanism 20 rotates into the channel 11 along the direction away from the supporting column 10 on the same side and is in the horizontal position, the channel 11 is switched from the open state to the closed state, so that the parking rod mechanism 20 rotates downwards and does not occupy a large space above the channel 11, and the barrier gate device for the parking lot provided by the application can be suitable for places with limited height.

As shown in fig. 1 and 2, there are two parking lever mechanisms 20, the two parking lever mechanisms 20 are disposed on the two support pillars 10 in a one-to-one correspondence, and the connection positions of the two parking lever mechanisms 20 and the two support pillars 10 are at the same height. In this way, the two parking rod mechanisms 20 cooperate to open and close the passage 11, so as to avoid the situation that the passage 11 is too wide, so that a single parking rod mechanism 20 is too long, and the too long parking rod mechanism 20 is inconvenient to control, and the two parking rod mechanisms 20 are arranged in the structural form of the two parking rod mechanisms 20, so as to ensure that the load on each support column 10 is not too large.

In the following description, the right parking lever mechanism 20 in fig. 2 is taken as an example, and the left parking lever mechanism 20 is identical in structure to the right parking lever mechanism 20 except that the rotation directions of the left and right parking lever mechanisms 20 are opposite when the tunnel 11 is opened and the tunnel 11 is closed.

As shown in fig. 3, the parking rod mechanism 20 includes a driving swing arm 21 and an extension arm 22, and a first end of the driving swing arm 21 is pivotally connected to the support pillar 10; the extension arm 22 is pivotally connected with the second end of the driving swing arm 21, the extension arm 22 has an extension position which rotates to form a first included angle A with the driving swing arm 21, and the extension arm 22 has a storage position which rotates to form a second included angle B with the driving swing arm 21; wherein, when the passageway 11 is in the closed condition, first contained angle A is 180, and when the passageway 11 is in the open condition, second contained angle B satisfies: b is more than or equal to 0 degree and less than or equal to 90 degrees. By providing the parking lever mechanism 20 with the configuration including the drive swing arm 21 and the extension arm 22 in this way, it is possible to secure the parking lever mechanism 20 to be freely retractable in a place with a limited height, and it is possible to secure a sufficient length when the parking lever mechanism 20 closes the passage 11, thereby achieving reliability in closing the passage 11.

As shown in fig. 1, a rotation stopping structure 50 is disposed at a connection position of the driving swing arm 21 and the extension arm 22, and when the channel 11 is in a closed state, the first included angle a is 180 °, at this time, the rotation stopping structure 50 plays a role of limiting the extension arm 22 to continue rotating relative to the driving swing arm 21, and ensures that the first included angle a between the driving swing arm 21 and the extension arm 22 can be maintained at 180 °.

As shown in fig. 3, at least one roller 221 is provided on the extension arm 22 to be in rolling contact with the ground. Thus, when the extension arm 22 is driven by the driving swing arm 21 to move, the friction between the extension arm 22 and the ground is rolling friction, and the movement efficiency of the extension arm 22 can be improved.

As shown in fig. 3, two rollers 221 are disposed on the extension arm 22, and the two rollers 221 are respectively located at two ends of the extension arm in the length direction. Thus, when the driving swing arm 21 rotates and drives the extension arm 22 to move, when one roller 221 of the two rollers 221 contacts the ground, the other roller 221 does not contact the ground, and the motion stability of the extension arm 22 along with the driving swing arm 21 is ensured.

Note that, in the present application, the driving swing arm 21 is telescopically arranged in a length direction thereof. In this way, the length of the driving swing arm 21 can be adjusted accordingly according to the width of the passage 11.

It should be noted that, in an embodiment of the present application, which is not shown in the drawings, the driving swing arm 21 includes a plurality of sleeves, and at least two adjacent sleeves of the plurality of sleeves are drawably disposed therebetween to lengthen or shorten the length of the driving swing arm 21. Thus, the length of the driving swing arm 21 can be adjusted, and meanwhile, the structure of the driving swing arm 21 is simple enough, and the processing and the manufacturing are convenient.

As shown in fig. 3, the driving swing arm 21 has a first hollow region 211, and the parking rod mechanism 20 further includes a first stop plate 23, an elastic member 24, and a telescopic arm 25, wherein the first stop plate 23 is disposed in the first hollow region 211 and extends in a cross-sectional direction of the driving swing arm 21; the elastic member 24 is disposed in the first hollow region 211, and a first end of the elastic member 24 abuts against the first stopper plate 23; at least a part of the telescopic arm 25 extends into the first hollow region 211, and the second end of the elastic element 24 is abutted with the telescopic arm 25; wherein, when the extension arm 22 is in the storage position, the elastic member 24 is in a compressed state; when the extension arm 22 is switched from the storage position to the extension position, the elastic member 24 provides a force to the telescopic arm 25 so that the telescopic arm 25 is extended from the first hollow region 211. In this way, the driving swing arm 21 is provided with the first hollow region 211, which reduces the weight of the driving swing arm 21, and is advantageous for the lightweight design of the parking lever mechanism 20, and the elastic member 24 is provided so that elastic potential energy can be accumulated when the elastic member 24 is compressed, and elastic potential energy can be released when the elastic member is restored to the deformed state, and an urging force for urging the telescopic arm 25 can be provided, thereby ensuring the telescopic reliability of the telescopic arm 25.

As shown in fig. 3, the telescopic arm 25 has a second hollow area 251, a second stop plate 252 is disposed in the second hollow area 251, and the second end of the elastic member 24 abuts against the second stop plate 252. In this way, the provision of the second hollow region 251 is advantageous for reducing the weight of the telescopic arm 25, and further, the lightweight design of the parking lever mechanism 20 is achieved, and the provision of the second stopper plate 252 ensures that the elastic member 24 can be effectively compressed to accumulate elastic potential energy, and also ensures that when the elastic member 24 releases the elastic potential energy, a reliable thrust action can be provided to the telescopic arm 25 through the second stopper plate 252.

As shown in fig. 3, the second stopper plate 252 has an escape hole, the parking rod mechanism 20 further includes a guide rod 26, a first end of the guide rod 26 is connected to the first stopper plate 23, a second end of the guide rod 26 passes through the escape hole, the elastic member 24 is a spring, and the spring is sleeved on an outer peripheral side of the guide rod 26. In this way, the guide rod 26 plays a role in guiding and limiting the spring, so as to ensure that the spring can be compressed and restored to deform along the extending direction of the guide rod 26, and ensure that the spring can provide stable and reliable elastic force for the telescopic arm 25.

Optionally, the guide bar 26 is threaded with the first stop plate 23.

As shown in fig. 3, the parking lot barrier device further includes a driving unit 30, the driving unit 30 is disposed on the support column 10, the parking lever mechanism 20 further includes a link mechanism 27, and a driving shaft of the driving unit 30 is drivingly connected to a crank 271 of the link mechanism 27. In this way, the movement reliability of the link mechanism 27 is ensured.

Alternatively, the driving part 30 is a stepping motor.

Optionally, a hole structure is formed in the crank 271, a spline groove is formed in a wall surface of the hole structure, and the crank 271 is connected with the motor output shaft of the driving portion 30 through a spline and clamped through a fastening screw.

As shown in fig. 3, a first end of a link 272 of the link mechanism 27 is hinged to the crank 271, and a second end of the link 272 is hinged to the driving swing arm 21. Thus, the swing reliability of the drive swing arm 21 is ensured.

It should be noted that, in the present application, the hinge position of the second end of the connecting rod 272 and the driving swing arm 21, and the pivotal connection position of the driving swing arm 21 and the supporting column 10 are not the same position.

As shown in fig. 3, the parking lot barrier device further includes a stopper 40, the stopper 40 is disposed on the support pillar 10, the stopper 40 has a stop surface, and when the passage 11 is in the open state, the parking lever mechanism 20 rotates to a position abutting against the stop surface. Thus, the limiting block 40 has a stopping and limiting effect on the driving swing arm 21, and when the channel 11 is in the opening state, the driving swing arm 21 cannot move continuously under the stopping effect of the limiting block 40.

In the present application, the operation principle of the parking lot barrier gate device will be described by taking the parking lever mechanism 20 on the right side in fig. 2 as an example (corresponding to the parking lever mechanism 20 in fig. 3):

as shown in fig. 1, when the channel 11 is in the closed state, the link mechanism 27 is in the dead point position, and the reverse self-locking of the driving swing arm 21 can be realized, and due to the existence of the rotation stopping structure 50, the driving swing arm 21 and the extension arm 22 are in the horizontal position and are kept in the static state; when the parking lot barrier device receives an opening signal, the driving portion 30 rotates counterclockwise (for the parking rod mechanism 20 on the right side), and drives the driving swing arm 21 to rotate counterclockwise through the link mechanism 27, the extension arm 22 swings downward along with the driving swing arm 21 under the action of self gravity, when the roller 221 (the roller 221 on the left side in fig. 3) at one end of the extension arm 22 far away from the driving swing arm 21 contacts with the ground and starts to roll, the included angle between the extension arm 22 and the telescopic arm 25 starts to decrease, when the roller 221 (the roller 221 on the right side in fig. 3) at one end of the extension arm 22 close to the driving swing arm 21 contacts with the ground and starts to roll, the telescopic arm 25 is pressed into the driving swing arm 21 under the reaction force of the ground, the spring at this time is gradually compressed, when the telescopic arm 25 reaches the maximum compression amount when reaching the vertical state, after crossing, the spring recovers deformation and provides elastic force to the telescopic arm 25, the telescopic arm 25 is reversely pushed out, when the driving swing arm 21 moves to the limit block 40, the power of the driving portion 30 is cut off, the opening of the passage 11 is completed, and the opening state of the passage 11 is shown in fig. 2; when the parking lot barrier gate device receives a closing signal, the driving portion 30 rotates clockwise, the link mechanism 27 drives the driving swing arm 21 to rotate clockwise, the telescopic arm 25 is pushed out after the parking lot barrier gate device crosses the vertical position, the extension arm 22 is gradually unfolded, and when the extension arm 22, the telescopic arm 25 and the driving swing arm 21 reach the horizontal position, the closing of the passageway 11 is completed.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (11)

1. A barrier gate device for a parking lot, comprising:

the vehicle-mounted support structure comprises two support columns (10), wherein the two support columns (10) are arranged at intervals, and a channel (11) for a vehicle to pass through is formed between the two support columns (10);

the parking rod mechanism (20) is arranged on at least one support column (10) of the two support columns (10), and the parking rod mechanism (20) is in pivot connection with the support column (10);

wherein said channel (11) is in a closed state when said parking lever mechanism (20) is in a horizontal position within said channel (11); when the parking lever mechanism (20) is positioned on the side of the support column (10) and close to the support column (10), the channel (11) is in an open state;

the parking lever mechanism (20) includes:

a driving swing arm (21), wherein a first end of the driving swing arm (21) is pivotally connected with the supporting column (10);

the extension arm (22) is in pivot connection with the second end of the driving swing arm (21), the extension arm (22) is provided with an extension position which rotates to form a first included angle A with the driving swing arm (21), and the extension arm (22) is provided with a storage position which rotates to form a second included angle B with the driving swing arm (21);

wherein, when the channel (11) is in a closed state, the first included angle A is 180 degrees, and when the channel (11) is in an open state, the second included angle B satisfies: b is more than or equal to 0 degree and less than or equal to 90 degrees.

2. The barrier gate apparatus for a parking lot according to claim 1, wherein there are two parking rod mechanisms (20), the two parking rod mechanisms (20) are disposed on the two supporting pillars (10) in one-to-one correspondence, and the connecting positions of the two parking rod mechanisms (20) and the two supporting pillars (10) are at the same height.

3. The gateway device for parking lot according to claim 1, wherein at least one roller (221) is provided on the extension arm (22) to be in rolling contact with the ground.

4. The barrier gate apparatus for a parking lot according to claim 1, wherein the driving swing arm (21) is telescopically arranged in a length direction thereof.

5. The barrier gate device for a parking lot according to claim 1, wherein the driving swing arm (21) comprises a plurality of sleeves, and at least two adjacent sleeves among the plurality of sleeves are drawably disposed therebetween to lengthen or shorten a length of the driving swing arm (21).

6. The barrier gate apparatus for a parking lot according to claim 5, wherein the driving swing arm (21) has a first hollow region (211), and the parking lever mechanism (20) further comprises:

a first stop plate (23), wherein the first stop plate (23) is arranged in the first hollow area (211) and extends along the cross section direction of the driving swing arm (21);

an elastic member (24), wherein the elastic member (24) is arranged in the first hollow area (211), and a first end of the elastic member (24) is abutted against the first stop plate (23);

a telescopic arm (25), at least one part of the telescopic arm (25) extends into the first hollow area (211) and is arranged in the first hollow area, and the second end of the elastic piece (24) is abutted with the telescopic arm (25);

wherein the resilient member (24) is in a compressed state when the extension arm (22) is in the stowed position; when the extension arm (22) is switched from the storage position to the extension position, the elastic piece (24) provides acting force to the telescopic arm (25) so that the telescopic arm (25) extends out of the first hollow area (211).

7. The barrier gate device for parking lots according to claim 6, wherein the telescopic arm (25) has a second hollow region (251), a second stop plate (252) is disposed in the second hollow region (251), and a second end of the elastic member (24) abuts against the second stop plate (252).

8. The barrier gate apparatus for a parking lot according to claim 7, wherein the second stopper plate (252) has an escape hole, and the parking lever mechanism (20) further comprises:

the guide rod (26), the first end of guide rod (26) with first backstop board (23) are connected, the second end of guide rod (26) passes dodge the via hole setting, elastic component (24) are the spring, the spring housing is established the periphery side of guide rod (26).

9. The parking lot barrier device according to claim 1, further comprising a driving portion (30), wherein the driving portion (30) is provided on the support column (10), and wherein the parking lever mechanism (20) further comprises a link mechanism (27), and wherein a driving shaft of the driving portion (30) is drivingly connected to a crank (271) of the link mechanism (27).

10. The parking lot barrier device according to claim 9, wherein a first end of a link (272) of the link mechanism (27) is hinged to the crank (271), and a second end of the link (272) is hinged to the driving swing arm (21).

11. The gateway device for a parking lot according to claim 1, characterized by further comprising:

the stop block (40) is arranged on the support column (10), the stop block (40) is provided with a stop surface, and when the channel (11) is in an open state, the stop rod mechanism (20) rotates to a position abutted against the stop surface.

Images