Sliding positioning device of sunshade or awning

Abstract

The invention discloses a sliding positioning device of a sunshade or awning, which comprises a pipe body and a sliding part capable of sliding along the axial direction of the pipe body, a sliding connection mechanism and a sliding position locking mechanism are arranged between the sliding part and the pipe body, and the sliding positioning device is characterized in that the sliding connection mechanism is a gear and rack transmission assembly arranged between the sliding part and the pipe body. The device has the advantages that the structure is simple, the sliding part and the pipe body are in relative sliding connection through the gear and rack transmission assembly, friction generated by meshing and rolling connection of the gear and the rack is small, friction damage generated by relative sliding is borne by the gear and the rack, no friction damage is caused to the sliding part and the pipe body, and the service life of the device is prolonged. And the service life of the pipe body can be effectively ensured, so that the overall service life is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of outdoor parasols or canopies, in particular to a sliding positioning device for parasols or canopies. Background Art

[0002] Parasols or canopies are common tools for sunshade in existing leisure places such as squares, beaches or lawns, providing a comfortable cool space for people to enjoy outdoor activities. Parasols or canopies are mainly composed of a supporting body and a sunshade part. The supporting body of common parasols or canopies is usually composed of a vertical pole for main support and an inclined rod for hanging and supporting the sunshade part. The vertical pole and the inclined rod are usually connected by a sliding positioning device, which is used to adjust the relative position of the vertical pole and the inclined rod, thereby realizing the opening of the sunshade part and the adjustment of the sunshade angle.

[0003] The existing sliding positioning device for parasols or sunshades is usually composed of a sliding connection mechanism and a positioning mechanism for positioning the sliding position of the sliding connection mechanism. The common sliding connection mechanisms are basically the following two types: one is to use a sliding sleeve to be installed on the corresponding pipe body, and the other is to set a roller on the sliding connection mechanism, and the roller is rollably set on the corresponding pipe body. In the above structure, whether it is a sliding sleeve or a roller, both form direct friction contact with the pipe body, so in the sliding process, it is inevitable to cause damage to the outer wall of the pipe body. Usually, the outer wall of the pipe body is coated with a protective layer. The protective layer will be consumed and worn after long-term use, so that the outer wall of the pipe body itself is exposed. These exposed parts are easy to rust, thereby affecting the service life of the pipe body, and then affecting the overall service life. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a sliding positioning device for a parasol or a canopy which has a simple structure, is stable in use and has a long service life.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: A sliding positioning device for a parasol or an umbrella comprises a tube body and a sliding component which can slide along the axial direction of the tube body. A sliding connection mechanism and a sliding position locking mechanism are arranged between the sliding component and the tube body. The sliding connection mechanism is a gear rack transmission assembly arranged between the sliding component and the tube body.

[0006] The gear rack transmission assembly includes a rack and a gear meshing with the rack. The tube body is provided with a plug-in groove with a side opening along the axial direction of the tube body. The rack is detachably inserted into the plug-in groove, and the gear is rotatably provided on the sliding component. The rack is detachably installed in the plug-in groove provided on the tube body. When the rack is worn, only the rack needs to be replaced, thereby reducing the use cost.

[0007] The tube body is provided with two slide grooves along the axial direction of the tube body, the plug-in groove is provided between the two slide grooves, a slide bar matching the slide groove is provided at the position corresponding to the slide groove on the sliding part, the slide bar is connected to the sliding part through a sliding wall, a sliding opening connected to the corresponding slide groove along the axial direction is provided at the position corresponding to the sliding wall on the tube body, the slide bar can be movably provided in the corresponding slide groove along the axial direction, and the sliding wall can be slidably provided in the corresponding sliding opening along the axial direction. Through the cooperation of the slide bar and the slide groove, the sliding part can be stably supported and installed on the tube body, and the cooperation rigidity of the slide bar and the tube body can be used to fully ensure the smooth sliding, and the relative rigidity of the connection between the sliding part and the tube body can be taken into account, the connection is stable, safe and reliable, and the shaking of the sliding part under the action of external force can be effectively avoided, so that the sliding part can be more stably slidably installed with the tube body, and has a relatively stable anti-sway and anti-torsion ability, ensuring the stability of the product.

[0008] The sliding position locking mechanism comprises a guide member fixedly mounted on the sliding component, a locking card is arranged in the guide member, the locking card can reciprocate along the axial direction of the guide member, one end of the locking card is a locking end, the locking end is aligned with the installation position of the gear, the locking end has a locking groove, and a reset member is arranged between the other end of the locking card and the guide member, when the sliding component slides into place relative to the tube body, the locking card moves forward to embed at least one gear tooth of the gear into the locking groove, and the gear cannot rotate, thereby realizing the locking of the sliding position, when the locking card moves backward to disengage the gear teeth on the gear from the locking tooth groove, the sliding component is unlocked from the tube body, and the sliding component can slide along the axial direction of the tube body at this time, when the sliding position is adjusted into place, the locking card is released, and driven by the reset member, the locking card moves forward to embed at least one gear tooth of the gear into the locking tooth groove again to realize position locking. The above-mentioned sliding position locking mechanism has a simple structure, stable locking position and easy operation. The locking groove matched with the gear teeth on the gear is provided on the locking clamp to lock the rotational position of the gear. When the corresponding gear teeth on the gear are embedded in the locking groove, the gear cannot rotate. At this time, the sliding position of the sliding component on the tube body is locked. When the gear teeth on the gear are disengaged from the locking groove, the gear can be rotated again. By applying force on the sliding component, the position of the sliding component relative to the tube body can be changed.

[0009] The reset member is a spring. In the absence of external force, the spring has a supporting force on the locking member, ensuring that the corresponding gear teeth on the gear can be stably embedded in the locking groove to achieve the locking of the sliding part. When force is applied to make the locking member retreat and unlock, the locking member forms a force on the spring, making the spring in a compressed state, so that after the external force on the locking member disappears, it can quickly drive it to reset and re-lock.

[0010] The guide is a cylindrical structure with an open end, a sliding member is slidably sleeved on the guide, the locking clamp is slidably connected in the inner cavity of the guide, the locking clamp and the sliding member are connected by a connecting rod, the cylindrical wall of the guide has a waist-shaped through groove arranged along the axial direction of the guide, and the connecting rod is connected in the waist-shaped through groove. When unlocking, force is applied to the sliding member to drive the sliding member to retreat, driving the locking clamp to retreat synchronously, and the operation is convenient.

[0011] The two ends of the slide bar are detachably provided with sliding sleeves, and the outer wall of the sliding sleeve is in contact with the inner wall of the slide groove. The sliding sleeve is used to reduce the contact area and friction resistance between the slide groove and the slide groove, and reduce the friction damage between the two. When the sliding sleeve is seriously damaged, it can be replaced separately, effectively reducing the maintenance cost.

[0012] The outer wall of the sliding sleeve is provided with a plurality of recessed parts at intervals, and a convex part is formed between adjacent recessed parts, and the convex part contacts and cooperates with the inner wall of the sliding groove, thereby reducing the contact area with the sliding groove and making sliding more labor-saving.

[0013] The sliding sleeve is made of engineering plastic material, so that the sliding sleeve can provide better friction resistance, and after contacting with the rigid pipe body, the sliding sleeve is mainly worn, and the damage to the pipe body is relatively small.

[0014] The sliding component includes a sliding seat and a sliding block, the sliding seat is detachably connected to the sliding block, the gear is rotatably arranged on the sliding block, and the slide bar is arranged on the sliding block. The sliding component is composed of the sliding seat and the sliding block, which are independent entities and can be used in a more diversified manner.

[0015] The sliding seat comprises a sliding seat main body, the sliding block comprises a mounting part and a sliding connection part, the sliding seat main body is provided with a through mounting groove for the mounting part to be inserted and installed, the mounting part is tightly fitted and installed in the mounting groove, the sliding connection part is extended and arranged outside the mounting groove, the sliding bar is arranged on the sliding connection part, the gear is rotatably arranged in the sliding connection part, and part of the gear teeth of the gear extends out of the sliding connection part, and the sliding seat main body is detachably provided with a limit end cover for forming an installation limit at the positions of the two ends of the mounting part. The structure is simple, and the stable connection and installation of the mounting part of the sliding block in the sliding seat is realized.

[0016] The sliding block has two installation walls spaced apart from each other, and the gear is rotatably installed between the two installation walls. The two installation walls enable the gear to be stably and rotatably installed.

[0017] The ends of the two installation walls away from the tube body are connected by a connecting wall to form the installation part. The structure is simple and easy to manufacture.

[0018] The front and rear sides of the mounting portion are respectively provided with anti-drop positioning ribs, so that the mounting portion is a T-shaped structure, and the mounting groove is a T-shaped groove matched with the mounting portion, so as to realize stable connection and installation of the sliding seat and the sliding block.

[0019] The sliding seat has a through installation cavity for the tube body to be inserted into and installed, the tube body is inserted into the installation cavity, and a gap is provided between the outer wall of the tube body and the inner wall of the installation cavity. The sliding seat is covered and arranged outside the tube body, and the overall structure is more stable.

[0020] The mounting portion is provided with a through mounting hole, and the position of the position-limiting end cover corresponding to the mounting hole is provided with a through mounting through hole, and the position-limiting end cover is detachably connected and installed on the sliding seat by means of a mounting screw passing through the mounting through hole and being screwed into the mounting hole. The above-mentioned detachable connection structure is simple, low in cost, and can effectively realize the stable connection and installation between the sliding seat main body, the position-limiting end cover and the sliding block, and finally form an integral component.

[0021] Compared with the prior art, the advantages of the present invention are: simple structure, the sliding component and the tube body are relatively slidably connected through a gear rack transmission assembly, the friction of the meshing rolling connection between the gear and the rack is small, and the friction damage caused by the relative sliding is borne by the gear rack, and no friction damage will be caused to the sliding component and the tube body, which can effectively ensure the service life of the tube body and thus ensure the overall service life. After the sliding component slides into position relative to the tube body, the position of the sliding component is locked by a sliding position locking mechanism, and the overall structure is functionally perfect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the first embodiment of the present invention; Figure 2 It is a cross-sectional structural schematic diagram of the first embodiment of the present invention; Figure 3 It is a partial cross-sectional structural schematic diagram of the first embodiment of the present invention in a locked state; Figure 4 It is a schematic diagram of the top view of the structure of the tube body in the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of a sliding component in an embodiment of the present invention; Figure 6 It is a schematic diagram of the top view of the main body of the sliding seat in the present invention; Figure 7 It is a cross-sectional structural schematic diagram of the second embodiment of the present invention; Figure 8 This is a schematic diagram of the decomposed structure of the first embodiment of the present invention; Figures 9(a) to 9(e) are reference diagrams of the present invention when used in conjunction with a corresponding parasol. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below with reference to the accompanying drawings.

[0024] Embodiment 1: As shown in the figure, a sliding positioning device for a parasol or an awning comprises a tube body 1 and a sliding component which can slide along the axial direction of the tube body 1, a sliding connection mechanism and a sliding position locking mechanism are arranged between the sliding component and the tube body 1, and the sliding connection mechanism is a gear rack transmission assembly arranged between the sliding component and the tube body 1.

[0025] In this specific embodiment, the rack and pinion transmission assembly includes a rack 2 and a gear 3 meshing with the rack 2. A plug-in groove 11 with a side opening is provided on the tube body 1 along the axial direction of the tube body 1. The rack 2 is detachably inserted into the plug-in groove 11, and the gear 3 is rotatably provided on the sliding component. The rack 2 is detachably installed in the plug-in groove 11 provided on the tube body 1. When the rack 2 is worn, only the rack 2 needs to be replaced, thereby reducing the use cost.

[0026] In this specific embodiment, two slide grooves 12 are provided on the tube body 1 along the axial direction of the tube body 1, and the plug-in groove 11 is provided between the two slide grooves 12. A slide bar 41 matching the slide groove 12 is provided at a position corresponding to the slide groove 12 on the sliding component. The slide bar 41 is connected to the sliding component through a sliding wall 42. A sliding opening 121 that passes through the axial direction and is connected to the corresponding slide groove 12 is provided at a position corresponding to the sliding wall 42 on the tube body 1. The slide bar 41 can be movably provided in the corresponding slide groove 12 along the axial direction, and the sliding wall 42 can be slidably provided in the corresponding sliding opening 121 along the axial direction. Through the cooperation of the slide bar 41 and the slide groove 12, the sliding component can be stably supported and installed on the tube body 1. By utilizing the cooperation rigidity of the slide bar 41 and the tube body 1, while fully ensuring smooth sliding, the relative rigidity of the connection between the sliding component and the tube body 1 can be taken into account. The connection is firm, safe and reliable, and can effectively prevent the sliding component from shaking when subjected to external force. The sliding component can be more stably slidably installed on the tube body 1, has relatively stable anti-shake and anti-torsion capabilities, and ensures the stability of product use.

[0027] In this specific embodiment, the sliding position locking mechanism includes a guide member 5 fixedly mounted on the sliding component, a locking card 6 is arranged in the guide member 5, and the locking card 6 can reciprocate along the axial direction of the guide member 5, one end of the locking card 6 is a locking end, the locking end is aligned with the installation position of the gear 3, the locking end has a locking groove 61, and a reset member 7 is arranged between the other end of the locking card 6 and the guide member 5. When the sliding component slides into place relative to the tube body 1, the locking card 6 moves forward to embed at least one gear tooth 31 of the gear 3 into the locking groove 61, and the gear 3 cannot rotate, thereby realizing the locking of the sliding position. When the locking card 6 moves backward to disengage the gear tooth 31 on the gear 3 from the locking groove 61, the sliding component is unlocked from the tube body 1, and the sliding component can slide along the axial direction of the tube body 1 at this time. When the sliding position is adjusted into place, the locking card 6 is released, and driven by the reset member 7, the locking card 6 moves forward to embed at least one gear tooth 31 of the gear 3 into the locking groove 61 again to realize position locking. The above-mentioned sliding position locking mechanism has a simple structure, stable locking position and easy operation. The locking groove 61 set on the locking clamp 6 is used to lock the rotation position of the gear 3. When one of the gear teeth 31 on the gear 3 is embedded in the locking groove 61, the gear 3 cannot rotate. At this time, the sliding position of the sliding component on the tube body 1 is locked. When the gear teeth 31 on the gear 3 are disengaged from the locking groove, the gear 3 can be rotated again, and force is applied to the sliding component to achieve a change in the position of the sliding component relative to the tube body 1.

[0028] In this specific embodiment, there is one locking groove 61 into which one gear tooth 31 on the gear 3 can be inserted. The locking groove divides the locking end into two locking blocks 62. In the locked state, the locking block 62 is inserted between two corresponding adjacent gear teeth 31.

[0029] In this specific embodiment, the reset member 7 is a spring. In the absence of external force, the spring has a supporting force on the locking member 6, ensuring that the corresponding gear teeth 31 on the gear 3 can be stably embedded in the locking groove to achieve the locking of the sliding component. When force is applied to make the locking member 6 retreat and unlock, the locking member 6 forms a force on the spring, so that the spring is in a compressed state, so that after the external force on the locking member 6 disappears, it can quickly drive it to reset and re-lock.

[0030] In this specific embodiment, the guide member 5 is a cylindrical structure with an open end, a sliding member 51 is slidably sleeved on the guide member 5, a locking clamp 6 is slidably connected in the inner cavity of the guide member 5, the locking clamp 6 and the sliding member 51 are connected by a connecting rod 52, a waist-shaped through groove 53 is provided on the cylindrical wall of the guide member 5 along the axial direction of the guide member 5, and the connecting rod 52 is connected in the waist-shaped through groove 53. When unlocking, force is applied to the sliding member 51 to drive the sliding member 51 backward, driving the locking clamp 6 to synchronously retreat, and the operation is convenient.

[0031] In this specific embodiment, the reset member 7 is disposed between the guide member 5 and the sliding member 51 .

[0032] In this specific embodiment, the two ends of the slide bar 41 are detachably provided with a sliding sleeve 410, and the outer wall of the sliding sleeve 410 contacts and cooperates with the inner wall of the slide groove 12. The sliding sleeve 410 is used to reduce the contact area and friction resistance between the slide groove 12, and reduce the friction damage between the two. When the sliding sleeve 410 is seriously damaged, it can be replaced separately, which effectively reduces the maintenance cost.

[0033] In this specific embodiment, a plurality of recessed portions 411 are provided at intervals on the outer wall of the sliding sleeve 410, and protrusions 412 are formed between adjacent recessed portions 411, and the protrusions 412 are in contact with the inner wall of the slide groove 12. The contact area with the slide groove 12 is reduced, and sliding is more labor-saving.

[0034] In this specific embodiment, the sliding sleeve 410 is made of engineering plastic material, so that the sliding sleeve 410 can provide good friction resistance, and after contacting with the rigid pipe body 1, the sliding sleeve 410 is mainly worn, and the pipe body 1 is less damaged.

[0035] In this specific embodiment, the sliding component includes a sliding seat 8 and a sliding block 4, the sliding seat 8 is detachably connected to the sliding block 4, the gear 3 is rotatably arranged on the sliding block 4, and the sliding bar 41 is arranged on the sliding block 4. The sliding component is composed of the sliding seat 8 and the sliding block 4, which are independent entities and can be used in a more diversified manner.

[0036] In this specific embodiment, the sliding seat 8 includes a sliding seat main body 81, the sliding block 4 includes a mounting portion 45 and a sliding connection portion 46, the sliding seat main body 81 is provided with a through mounting groove 811 for the mounting portion 45 to be inserted and installed, the mounting portion 45 is tightly fitted and installed in the mounting groove 811, the sliding connection portion 46 is extended and arranged outside the mounting groove 811, the slide bar 41 is arranged on the sliding connection portion 46, the gear 3 is rotatably arranged in the sliding connection portion 46, and part of the gear teeth 31 of the gear 3 extends out of the sliding connection portion 46, and the sliding seat main body 81 is detachably provided with a limit end cover 82 for forming an installation limit at the positions of the two ends of the mounting portion 45. The structure is simple, and the mounting portion 45 of the sliding block 4 is stably connected and installed in the sliding seat 8.

[0037] In this specific embodiment, the sliding block 4 has two mounting walls 47 spaced apart from each other, and the gear 3 is rotatably mounted between the two mounting walls 47. The two mounting walls 47 enable the gear 3 to be stably rotatably mounted.

[0038] In this specific embodiment, the ends of the two mounting walls 47 away from the tube body 1 are connected by a connecting wall 48 to form a mounting portion 45. The structure is simple and easy to manufacture.

[0039] In this specific embodiment, the front and rear sides of the mounting portion 45 are respectively provided with anti-drop positioning ribs 451, so that the mounting portion 45 is a T-shaped structure, and the mounting groove 811 is a T-shaped groove matched with the mounting portion 45, so as to realize the stable connection and installation of the sliding seat 8 and the sliding block 4.

[0040] In this specific embodiment, a through mounting hole 452 is provided on the mounting portion 45, and a through mounting through hole 821 is provided on the position of the limiting end cover 82 corresponding to the mounting hole 452, and the mounting screw 100 passes through the mounting through hole 821 and is screwed into the mounting hole 452 to realize the detachable connection and installation of the limiting end cover 82 on the sliding seat 8. The above-mentioned detachable connection structure is simple, low in cost, and can effectively realize the stable connection and installation between the sliding seat main body 81, the limiting end cover 82 and the sliding block 4, and finally form an integral component.

[0041] When specifically installed on a parasol or a canopy, the tube body 2 can be the tube body of the vertical pole B or the tube body of the diagonal pole A. When the sliding seat 1 is slidably installed on the tube body 2 of the vertical pole B, one end of the tube body 2 of the diagonal pole A is rotatably connected to the sliding seat 8. When the sliding seat 1 is slidably installed on the tube body of the diagonal pole A, the top of the tube body of the vertical pole B is rotatably connected to the sliding seat 8.

[0042] Embodiment 2: The other parts are the same as those of Embodiment 1, except that the sliding seat 8 has a through installation cavity 80 for the tube body 1 to be inserted into and installed, the tube body 1 is inserted into the installation cavity 80, and a gap is provided between the outer wall of the tube body 1 and the inner wall of the installation cavity 80. The sliding seat 8 is provided to cover the outside of the tube body 1, and the overall structure is more stable.

Claims

1. A sliding positioning device for a parasol or sunshade, comprising a tube body and a sliding component that can slide along the axial direction of the tube body, wherein a sliding connection mechanism and a sliding position locking mechanism are provided between the sliding component and the tube body, Features The sliding connection mechanism is a gear rack transmission assembly arranged between the sliding component and the tube body.

2. A sliding positioning device for a parasol or an awning as claimed in claim 1, Features The rack and pinion transmission assembly includes a rack and a gear meshingly connected to the rack. A plug-in groove with a side opening is provided on the tube body along the axial direction of the tube body. The rack is detachably fitted and inserted into the plug-in groove, and the gear is rotatably provided on the sliding component.

3. A sliding positioning device for a parasol or an awning as claimed in claim 2, Features Two slide grooves are arranged on the tube body along the axial direction of the tube body, the plug-in groove is arranged between the two slide grooves, a slide bar matching the slide groove is arranged at a position corresponding to the slide groove on the sliding component, the slide bar is connected to the sliding component through a slide wall, and a slide opening that passes through the axial direction and is connected to the corresponding slide groove is arranged at a position corresponding to the slide wall on the tube body, the slide bar can be movably arranged in the corresponding slide groove along the axial direction, and the slide wall can be slidably arranged in the corresponding slide opening along the axial direction.

4. A sliding positioning device for a parasol or an awning as claimed in claim 2, Features The sliding position locking mechanism comprises a guide member fixedly mounted on the sliding component, a locking card is arranged in the guide member, the locking card can reciprocate along the axial direction of the guide member, one end of the locking card is a locking end, the locking end is aligned with the installation position of the gear, the locking end has a locking groove, and a reset member is arranged between the other end of the locking card and the guide member, when the sliding component slides into place relative to the tube body, the locking card moves forward to embed at least one gear tooth of the gear into the locking groove, and the gear cannot rotate, thereby realizing the locking of the sliding position, when the locking card moves backward to disengage the gear teeth on the gear from the locking tooth groove, the sliding component is unlocked from the tube body, and the sliding component can slide along the axial direction of the tube body at this time, when the sliding position is adjusted into place, the locking card is released, and driven by the reset member, the locking card moves forward to embed at least one gear tooth of the gear into the locking tooth groove again to realize position locking.

5. A sliding positioning device for a parasol or an awning as claimed in claim 4, Features The guide member is a cylindrical structure with an open end, a sliding member is slidably sleeved on the guide member, the locking card is slidably connected in the inner cavity of the guide member, the locking card and the sliding member are connected by a connecting rod, the cylindrical wall of the guide member has a waist-shaped through groove arranged along the axial direction of the guide member, and the connecting rod is inserted into the waist-shaped through groove.

6. A sliding positioning device for a parasol or an awning as claimed in claim 3, Features Sliding sleeves are detachably arranged on the two ends of the sliding bar, and the outer wall of the sliding sleeve is in contact with the inner wall of the sliding groove.

7. A sliding positioning device for a parasol or an awning as claimed in claim 3, Features The sliding component comprises a sliding seat and a sliding block, the sliding seat is detachably connected to the sliding block, the gear is rotatably arranged on the sliding block, and the sliding bar is arranged on the sliding block.

8. A sliding positioning device for a parasol or an awning as claimed in claim 7, Features The sliding seat includes a sliding seat main body, and the sliding block includes a mounting portion and a sliding connection portion. The sliding seat main body is provided with a through mounting groove for the mounting portion to be inserted and installed, and the mounting portion is tightly fitted and plugged into the mounting groove, and the sliding connection portion is extended out of the mounting groove. The sliding bar is provided on the sliding connection portion, and the gear is rotatably provided in the sliding connection portion, and part of the gear teeth of the gear extends out of the sliding connection portion. The sliding seat main body is detachably provided with limit end covers for forming installation limits at the two ends of the mounting portion.

9. A sliding positioning device for a parasol or an awning as claimed in claim 8, Features The front side and the rear side of the mounting portion are respectively protruded with anti-drop positioning convex ribs, so that the mounting portion is a T-shaped structure, and the mounting groove is a T-shaped groove matched with the mounting portion.

10. A sliding positioning device for a parasol or an awning as claimed in claim 7, Features The sliding seat has a through installation cavity for the tube body to be inserted into and installed. The tube body is inserted into and arranged in the installation cavity. A gap is arranged between the outer wall of the tube body and the inner wall of the installation cavity.

Images