CN213872951U

CN213872951U - Base assembly of air conditioner on-hook

Info

Publication number: CN213872951U
Application number: CN202023258102.3U
Authority: CN
Inventors: 刘县成; 刘萍; 张春; 苟兹发; 熊宏森; 王楠
Original assignee: Wuhan Leirui Technology Co ltd
Current assignee: Wuhan Leirui Technology Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-08-03
Anticipated expiration: 2030-12-29

Abstract

The utility model provides a base subassembly of air conditioner on-hook belongs to air conditioner spare part technical field. The chassis assembly includes an air conditioner on-hook base plate and a support assembly. The air conditioner on-hook bottom plate is rectangle, and the air conditioner on-hook bottom plate has interconnect's long limit and minor face, has two bar holes on the face of air conditioner on-hook bottom plate, and two bar holes syntropy arrange and parallel with long limit, and two bar holes are symmetrical for long ascending central line. The bearing subassembly includes two bearing supports, and every bearing support all is including connecting support and bracing piece, connects the support and is used for being connected with the wall, connects to have the bar spout on the support, and the bracing piece is parallel with the minor face, installs in the bar spout the one end slidable of bracing piece, and the other end of the bracing piece in two bearing supports installs in the bar hole that corresponds slidable respectively. The base assembly can reduce the manufacturing cost of the air conditioner box body.

Description

Base assembly of air conditioner on-hook

Technical Field

The disclosure relates to the technical field of air conditioner parts, in particular to a base assembly of an air conditioner hanging machine.

Background

Most civil hanging air conditioners and cabinet air conditioners are usually provided with an internal machine and an external machine respectively, and the air conditioner hanging machine positioned outdoors is generally hung on the outer wall of a building through a supporting bracket.

In the related art, when an outdoor air conditioner on-hook is mounted, a bearing support is usually fixed on a wall of a building, and then the air conditioner on-hook is fixed on the bearing support to support and fix the air conditioner on-hook.

Because different users require different to the mounted position of air conditioner on-hook, and the outdoor installation space size that is used for installing the air conditioner on-hook also is different, thereby often need design the bearing support of unidimensional and interval and carry out fixed connection bearing air conditioner on-hook to the air conditioner on-hook, the bottom of air conditioner on-hook also often need carry out redesign with the hookup location of bearing support, leads to the manufacturing cost height of air conditioner on-hook.

SUMMERY OF THE UTILITY MODEL

The embodiment of the disclosure provides a base component of an air conditioner hanging machine, which can adjust the distance between supporting brackets for supporting the air conditioner hanging machine according to different sizes of installation spaces of the air conditioner hanging machines of different users, so as to realize the fixed installation of the air conditioner hanging machine under different installation space conditions and reduce the manufacturing cost of an air conditioner box body. The technical scheme is as follows:

the embodiment of the present disclosure provides a base assembly of an air conditioner on-hook, and the mold includes:

the air conditioner hanging machine bottom plate is rectangular and is provided with long sides and short sides which are connected with each other, two strip-shaped holes are formed in the plate surface of the air conditioner hanging machine bottom plate, the two strip-shaped holes are arranged in the same direction and are parallel to the long sides, and the two strip-shaped holes are symmetrical relative to a central line on the long sides;

the bearing subassembly, the bearing subassembly includes two bearing supports, every bearing support all is including connecting support and bracing piece, connect the support and be used for being connected with the wall, connect the bar spout that has on the support, the bracing piece is parallel with the minor face, install in the bar spout the one end slidable of bracing piece, two bearing supports and two bar hole one-to-one, install in the bar hole that corresponds the other end slidable respectively of the bracing piece in two bearing supports.

Optionally, the other end of bracing piece has the locking structure, and the locking structure is configured to be able to be through the other end with the bracing piece and air conditioner on-hook bottom plate fixed connection to it is fixed to lock the slip of bracing piece in the length direction in bar hole.

Optionally, the locking structure includes locking piece and connecting rod, and the locking piece is located the opposite both sides face of air conditioner on-hook bottom plate with the bracing piece, has first bolt hole on the locking piece, have on the face of air conditioner on-hook bottom plate with first bolt hole assorted second bolt hole, have on the bracing piece with second bolt hole assorted third bolt hole, the connecting rod is arranged in the bar hole, the both ends of connecting rod are connected with bracing piece and locking piece respectively.

Optionally, two first bolt holes are formed in the locking block, the two first bolt holes are located on two sides of the connecting rod respectively, two second bolt holes are formed in the plate surface of the air-conditioning hanging machine bottom plate, the two second bolt holes are arranged in the direction perpendicular to the strip-shaped holes at intervals and located on two sides of the strip-shaped holes respectively, two third bolt holes arranged in the length direction at intervals are formed in the supporting rod, and the distance between the two first bolt holes, the distance between the two second bolt holes and the distance between the two third bolt holes are the same.

Optionally, the air conditioner hang-up bottom plate has the multiunit second bolt hole on the face, and every group second bolt hole all includes along two second bolt holes with bar hole vertically direction interval arrangement and be located the both sides in bar hole respectively, and the multiunit second bolt hole is along the even interval arrangement in the length direction in bar hole.

Optionally, a plurality of limiting teeth and a plurality of limiting teeth are arranged on the hole wall of the two strip-shaped holes in the length direction, the limiting teeth are evenly arranged along the length direction of the strip-shaped holes at intervals, and the distance between any two adjacent limiting teeth in the limiting teeth is matched with the outer diameter of the connecting rod.

Optionally, the support rod is provided with a fourth bolt hole, the connecting support is provided with a plurality of fifth bolt holes matched with the fourth bolt hole, and the fifth bolt holes are uniformly arranged in the strip-shaped sliding groove at intervals.

Optionally, the base assembly further comprises an elastic connecting piece, the elastic connecting piece is installed in the strip-shaped sliding groove, one end of the elastic connecting piece is connected with one end of the supporting rod, and the other end of the elastic connecting piece is connected with the bottom wall of the strip-shaped sliding groove.

The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:

install in two bar holes of air conditioner on-hook bottom plate through bracing piece one end with two bearing supports that are used for fixed stay slidable respectively, on the bottom plate of air conditioner on-hook, also be when the base of air conditioner on-hook is installed, according to the different installation condition of different users, for example when the outer wall upper space of user residence is narrower, can be in the length direction who follows two bar holes with the one end of two bracing pieces and slide in opposite directions, with the interval between reducing two bearing supports, make installing in narrower wall space of air conditioner on-hook bottom plate adaptability. And when the space was great on the wall at user's house, then can slide the one end of two bracing pieces to the one end that two bar holes kept away from each other respectively, made the interval between two bearing supports reach the biggest, improved support stability.

The installation space size to different users' air conditioner on-hook is different, the base subassembly that this disclosed embodiment provided can adjust the interval between the bearing support that is used for supporting the air conditioner on-hook, also can freely adjust the length of bearing support when needs dismouting to the realization homoenergetic realizes easy to assemble and the dismantlement to the air conditioner on-hook under different installation space conditions, need not to carry out redesign to the base and the bearing support of air conditioner on-hook, reduces the manufacturing cost of air conditioner on-hook.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a base assembly of an air conditioner on-hook according to an embodiment of the present disclosure;

FIG. 2 is a partial cross-sectional structural view of a base assembly of an air conditioning hook provided in accordance with an embodiment of the present disclosure;

FIG. 3 is a schematic view of an assembly structure of a connecting rod and a strip-shaped hole provided by the embodiment of the disclosure;

figure 4 is a cross-sectional view of a support assembly according to an embodiment of the present disclosure.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a base assembly of an air conditioner on-hook according to an embodiment of the present disclosure. Fig. 2 is a partial structural cross-sectional view of a base assembly of an air conditioning hook provided in an embodiment of the present disclosure. Fig. 3 is a schematic view of an assembly structure of a connecting rod and a strip-shaped hole according to an embodiment of the disclosure. Figure 4 is a cross-sectional view of a support assembly according to an embodiment of the present disclosure. As shown in fig. 1-4, the inventors have practiced a base assembly for an air conditioner on-hook including an air conditioner base plate 100 and a racking assembly 200.

The on-hook air conditioner base plate 100 is rectangular, and the on-hook air conditioner base plate 100 has a long side 110 and a short side 120 connected to each other. The plate surface of the air-conditioning hanging machine bottom plate 100 is provided with two strip-shaped holes 130, the two strip-shaped holes 130 are arranged in the same direction and are parallel to the long edge 110, and the two strip-shaped holes 130 are symmetrical relative to a central line on the long edge 110. The racking assembly 200 includes two racking supports 200a, each racking support 200a including a connecting support 210 and a support pole 220. The connecting support 210 is used for connecting with a wall, a strip-shaped sliding groove 211 is formed in the connecting support 210, the supporting rods 220 are parallel to the short edges 120, one end of each supporting rod 220 is slidably mounted in the strip-shaped sliding groove 211, the two supporting brackets 200a are in one-to-one correspondence with the two strip-shaped holes 130, and the other ends of the supporting rods 220 in the two supporting brackets 200a are slidably mounted in the corresponding strip-shaped holes 130 respectively.

In the embodiment of the present disclosure, when the air conditioner hanging unit needs to be installed on an outdoor wall, the two support brackets 200a are slidably adjusted in the length direction of the two bar-shaped holes 130, so that the distance between the support rods 220 of the two support brackets 200a matches with the position and space where a user needs to install the air conditioner hanging unit, and then the two connection supports 210 at one end of the support rods 220 are fixed on the wall through a bolt connection or welding manner, so as to complete the fixed installation of the base assembly and the wall. And finally, sequentially assembling and installing other parts such as side plates, an internal electric control plate, a top cover and the like of the air conditioner on the fixedly installed bottom plate 100 of the air conditioner, thus completing the installation of the air conditioner.

When the air conditioner hanging machine needs to be installed on a wall in a recessed position of a building wall, the position of the supporting rod 220 can be adjusted along the length direction of the strip-shaped sliding groove 211 after the connecting support 210 is fixedly installed on the wall, so that the supporting rod 220 slides in a direction away from the wall, the air conditioner hanging machine bottom plate 100 is driven by the supporting rod 220 to slide to a position farthest away from the wall, the recessed position of the wall is extended, and the air conditioner hanging machine is convenient for workers to assemble other parts of the air conditioner hanging machine. Then, the position of the supporting rod 220 in the strip-shaped sliding groove 211 is adjusted in the length direction of the strip-shaped sliding groove 211 by pushing the air-conditioning hanging machine bottom plate 100 towards the direction close to the wall, so that the air-conditioning hanging machine bottom plate 100 supports the air-conditioning hanging machine to be close to the wall along the direction of the strip-shaped sliding groove 211 until one end of the supporting rod 220 located in the strip-shaped sliding groove 211 is abutted to the bottom wall of the strip-shaped sliding groove 211, the air-conditioning hanging machine integrally enters the sunken part of the building wall, and the installation of the air-conditioning hanging machine is completed. When the maintenance is carried out to the air conditioner on-hook in needs, only need again with air conditioner on-hook bottom plate 100 to the direction pulling of keeping away from the wall, air conditioner on-hook and air conditioner on-hook bottom plate 100 can be through the slide bar along bar spout 211 to the sunken department of keeping away from the direction roll-off wall again, avoid receiving the interference of other walls of sunken department, conveniently carry out the dismouting to the air conditioner box, improve maintenance efficiency.

The base component of the air conditioner hanging machine provided by the embodiment of the disclosure, one end of the supporting rod 220 of the two supporting brackets 200a used for fixed support is respectively installed in the two strip-shaped holes 130 of the air conditioner hanging machine bottom plate 100 in a sliding manner, when the air conditioner hanging machine bottom plate 100, namely the base of the air conditioner hanging machine is installed, according to different installation conditions of different users, for example, when the space on the outer wall of a user residence is narrow, one end of the two supporting rods 220 can slide oppositely along the length direction of the two strip-shaped holes 130, so as to reduce the distance between the two supporting brackets 200a, and the air conditioner hanging machine bottom plate 100 can be installed in the narrow wall space in an adaptive manner. And when the space was great on the wall of user's residence, then can slide the one end of two bracing pieces 220 respectively to the one end that two bar holes 130 kept away from each other, make the interval between two bearing support 200a reach the biggest, improve support stability.

Alternatively, the other end of the support rod 220 is provided with a locking structure 230, and the locking structure 230 is configured to be capable of locking and fixing the sliding of the support rod 220 in the length direction of the strip-shaped hole 130 by fixedly connecting the other end of the support rod 220 with the air conditioner hanging machine bottom plate 100. Exemplarily, in the embodiment of the present disclosure, by providing the locking structure 230 at the other end of the supporting bracket 200a, after the distance between the two supporting rods 220 is adjusted, the other end of the two supporting rods 220 is fixedly connected to the bottom plate 100 of the air conditioner hanging unit through the locking structure 230, so as to prevent the two supporting rods 220 from sliding in the two strip-shaped holes 130 due to the vibration generated during the operation of the air conditioner hanging unit, thereby improving the assembly stability of the base assembly.

Optionally, the locking structure 230 includes a locking block 231 and a connecting rod 232, the locking block 231 and the supporting rod 220 are located on two opposite sides of the air-conditioning hanging machine bottom plate 100, the locking block 231 has a first bolt hole 2311, the plate surface of the air-conditioning hanging machine bottom plate 100 has a second bolt hole 140 matched with the first bolt hole 2311, the supporting rod 220 has a third bolt hole 221 matched with the second bolt hole 140, the connecting rod 232 is located in the strip-shaped hole 130, and two ends of the connecting rod 232 are respectively connected to the supporting rod 220 and the locking block 231. For example, in the embodiment of the present disclosure, after the user adjusts the positions of the other ends of the two support rods 220 in the two bar-shaped holes 130 according to the size of the installation space of the on-hook air conditioner, the user aligns the first bolt hole 2311 on the locking block 231, the second bolt hole 140 on the on-hook air conditioner base plate 100 and the third bolt hole 221 on the support rod 220, and then fixedly connects the locking block 231, the on-hook air conditioner base plate 100 and the support rod 220 by using a bolt connection manner, which is simple in structure and convenient to install. Can effectively prevent to lead to two bracing pieces 220 to take place to slide in two bar holes 130 because of the produced vibrations of air conditioner on-hook in the course of the work, further improve base component's assembly stability.

Optionally, the locking block 231 is provided with two first bolt holes 2311, the two first bolt holes 2311 are respectively located on two sides of the connecting rod 232, the panel surface of the air conditioner hanging machine bottom plate 100 is provided with two second bolt holes 140, the two second bolt holes 140 are arranged at intervals in a direction perpendicular to the strip-shaped hole 130 and are respectively located on two sides of the strip-shaped hole 130, the support rod 220 is provided with two third bolt holes 221 arranged at intervals in a length direction, and a distance between the two first bolt holes 2311, a distance between the two second bolt holes 140 and a distance between the two third bolt holes 221 are the same. Illustratively, two first bolt holes 2311 are provided on both sides of the connection of the locking block 231 and the link 232, two second bolt holes 140 are provided on both sides of the strip-shaped hole 130, and two third bolt holes 221 are arranged at intervals in the length direction of the support rod 220. When utilizing locking structure 230 to lock the bracing piece 220 and air conditioner hanging machine bottom plate 100 fixedly, can pass first bolt hole 2311, second bolt hole 140 and third bolt hole 221 with two bolts respectively simultaneously in the both sides in bar hole 130 and realize the spacing fixed to bracing piece 220, the restriction bracing piece 220 is at the ascending degree of freedom of the rotatory direction of axis around connecting rod 232, further prevent that bracing piece 220 from carrying out relative rotation for air conditioner hanging machine bottom plate 100, improve base assembly's assembly stability.

Optionally, the air conditioner hanging machine bottom plate 100 has multiple groups of second bolt holes 140 on the plate surface, each group of second bolt holes 140 includes two second bolt holes 140 spaced apart in a direction perpendicular to the strip-shaped hole 130 and located on two sides of the strip-shaped hole 130, and the multiple groups of second bolt holes 140 are uniformly spaced apart in a length direction of the strip-shaped hole 130. Exemplarily, more second bolt holes 140 can be uniformly distributed in the length direction of the bar-shaped hole 130 by uniformly arranging the plurality of groups of second bolt holes 140 at intervals in the direction along the bar-shaped hole 130, so that when the locking block 231 is located at different positions relative to the bar-shaped hole 130, the second bolt holes 140 corresponding to the first bolt holes 2311 can be found for bolt connection, so as to adapt to installation spaces with different sizes, and the practicability of the base assembly is improved.

Optionally, the hole walls of the two strip-shaped holes 130 in the length direction are provided with a plurality of limiting teeth 131 and a plurality of limiting teeth 131, the limiting teeth 131 are uniformly arranged along the length direction of the strip-shaped hole 130 at intervals, and the distance between any two adjacent limiting teeth 131 in the limiting teeth 131 is matched with the outer diameter of the connecting rod 232. Exemplarily, in the embodiment of the present disclosure, by providing a plurality of limiting teeth 131 on the hole wall of the bar-shaped hole 130, the distance between each two of the limiting teeth 131 is matched with the outer diameter of the connecting rod 232, after the connecting rod 232 is adjusted in place in the bar-shaped hole 130, the connecting rod 232 can be matched with two adjacent limiting teeth 131 on the hole wall of the bar-shaped hole 130, that is, the connecting rod 232 is clamped between two adjacent limiting teeth 131. Two spacing teeth 131 can be spacing to the connecting rod 232 that is located between in the length direction of bar hole 130, improve and bracing piece 220 between the stiction, prevent to lead to two connection support 210 to take place to slide in two bar holes 130 because of the produced vibrations of air conditioner hanging machine in the course of the work, further improved chassis assembly's assembly stability.

Optionally, the support rod 220 has a fourth bolt hole 222 thereon, and the connecting bracket 210 has a plurality of fifth bolt holes 2111 matching with the fourth bolt hole 222, and the plurality of fifth bolt holes are uniformly spaced in the strip-shaped sliding groove 211. Illustratively, in the embodiment of the present disclosure, the fourth bolt hole 222 on the support rod 220 whose relative position is adjusted is fixedly connected to the fifth bolt hole 2111 in the bar-shaped sliding groove 211 by a bolt, so as to avoid the shaking of the supporting assembly 200 caused by the vibration generated when the air conditioner is in operation. Meanwhile, the base component is connected and fastened in a bolt connection mode, the structure is simple, the installation is convenient, and the assembly stability of the base component is further improved.

Optionally, the base assembly further comprises an elastic connector 300, the elastic connector 300 is installed in the bar-shaped sliding groove 211, one end of the elastic connector 300 is connected with one end of the supporting rod 220, and the other end of the elastic connector 300 is connected with the bottom wall of the bar-shaped sliding groove 211.

Illustratively, in the embodiment of the present disclosure, when one end of the supporting rod 220 is located at an end of the strip-shaped sliding groove 211 farthest from the wall, the elastic connecting member 300 is in an initial state, i.e., a state of being neither extended nor contracted. When the air conditioner hanging machine is integrally fixed in the recess of the outer wall of the building, and the support rod 220 and the connection support 210 are limited and fixed by the bolts, the elastic connection member 300 is in a contracted state. When the air-conditioning hanging machine needs to extend out of the sunken part of the building outer wall and is separated from the air-conditioning hanging machine bottom plate 100 again, after the limit fixing of the support rod 220 and the connecting support 210 is released, the support rod 220 can slide to one side far away from the wall under the elastic action of the elastic connecting piece 300, so that the air-conditioning hanging machine bottom plate 100 and the air-conditioning hanging machine are pushed to automatically extend out of the sunken part of the building outer wall, manual adjustment is not needed, and the maintenance efficiency of the air-conditioning hanging machine is further improved.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.

The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.

Claims

1. A base assembly of an air conditioner on-hook, comprising:

the hanging air conditioner bottom plate is rectangular and is provided with a long side and a short side which are connected with each other, two strip-shaped holes are formed in the plate surface of the hanging air conditioner bottom plate, the two strip-shaped holes are arranged in the same direction and are parallel to the long side, and the two strip-shaped holes are symmetrical relative to a central line on the long side;

bearing subassembly, the bearing subassembly includes two bearing supports, every the bearing support all is including connecting support and bracing piece, it is used for being connected with the wall to connect the support, the bar spout has on the connection support, the bracing piece with the minor face is parallel, install the one end slidable of bracing piece in the bar spout, two the bearing support with two bar hole one-to-one, two in the bearing support the other end slidable respectively of bracing piece is installed and is corresponded in the bar hole.

2. The base assembly of an air conditioner on-hook of claim 1, characterized in that the other end of the support bar has a locking structure configured to enable locking fixation of the sliding of the support bar in the length direction of the strip-shaped hole by fixedly connecting the other end of the support bar with the air conditioner on-hook bottom plate.

3. The base assembly of the on-hook air conditioner of claim 2, wherein the locking structure comprises a locking block and a connecting rod, the locking block and the supporting rod are located on two opposite side surfaces of the on-hook air conditioner bottom plate, the locking block is provided with a first bolt hole, a second bolt hole matched with the first bolt hole is formed in the plate surface of the on-hook air conditioner bottom plate, a third bolt hole matched with the second bolt hole is formed in the supporting rod, the connecting rod is located in the strip-shaped hole, and two ends of the connecting rod are respectively connected with the supporting rod and the locking block.

4. The base assembly of the air conditioner on-hook of claim 3, wherein the locking block has two first bolt holes, the two first bolt holes are respectively located on two sides of the connecting rod, the panel of the air conditioner on-hook bottom plate has two second bolt holes, the two second bolt holes are arranged at intervals along a direction perpendicular to the strip-shaped hole and are respectively located on two sides of the strip-shaped hole, the support rod has two third bolt holes arranged at intervals along a length direction, and a distance between the two first bolt holes, a distance between the two second bolt holes and a distance between the two third bolt holes are the same.

5. The base assembly of an on-hook air conditioner according to claim 4, wherein the panel of the on-hook air conditioner bottom plate is provided with a plurality of groups of the second bolt holes, each group of the second bolt holes comprises two second bolt holes which are arranged at intervals along a direction perpendicular to the strip-shaped hole and are respectively positioned on two sides of the strip-shaped hole, and the plurality of groups of the second bolt holes are arranged at intervals along the length direction of the strip-shaped hole.

6. The base assembly of the on-hook air conditioner as claimed in claim 5, wherein the two strip-shaped holes are provided with a plurality of limiting teeth on the hole wall in the length direction, the limiting teeth are evenly arranged along the length direction of the strip-shaped holes at intervals, and the distance between any two adjacent limiting teeth in the limiting teeth is matched with the outer diameter of the connecting rod.

7. The base assembly of an air conditioning hanging machine as defined in claim 6, wherein said support rod has a fourth bolt hole thereon, said connection bracket has a plurality of fifth bolt holes matching said fourth bolt hole thereon, and said plurality of fifth bolt holes are arranged in said strip-shaped chute at regular intervals.

8. The base assembly of an air conditioning hanging machine as defined in claim 7, further comprising an elastic connecting member installed in the strip-shaped sliding groove, one end of the elastic connecting member being connected with one end of the supporting rod, and the other end of the elastic connecting member being connected with a bottom wall of the strip-shaped sliding groove.