Connecting rod structure of folding bed

Abstract

The utility model belongs to the technical field of folding beds, and particularly relates to a folding bed connecting rod structure which comprises a main body support and an adjusting support, a locking device for controlling the main body support and the adjusting support to be relatively fixed is arranged on the main body support, and the locking device comprises a first connecting seat and a second connecting seat. The first connecting base and the second connecting base are rotationally connected through a connecting rod, the first connecting base is detachably connected with the main body support, the second connecting base is detachably connected with the adjusting support, and the first connecting base and the second connecting base are provided with a first tooth-shaped face and a second tooth-shaped face respectively; the first tooth-shaped face and the second tooth-shaped face respectively comprise a plurality of first meshing teeth and second meshing teeth which are meshed with each other, a locking piece is arranged on the connecting rod, and the locking piece can drive the first meshing teeth and the second meshing teeth to be meshed and enable the first connecting base and the second connecting base to be relatively fixed. The utility model aims to provide the connecting rod structure of the folding bed, which is convenient to assemble and produce and is convenient for a user to adjust and use.

Description

Technical Field

[0001] This utility model belongs to the field of folding bed technology, and specifically relates to a folding bed linkage structure. Background Technology

[0002] With the fast pace of life, people often need to take a nap at work or school. Folding beds are simple beds designed using the principle of joints. In order to save space and make things convenient, they can be folded and stored in various ways. They are easy for users to unfold and fold, and convenient for storage in work or school.

[0003] To facilitate user convenience, some folding beds are equipped with sunshades, cup holders, and other items. For example, Chinese Utility Model Patent Application CN 202322924200.3 discloses a sunshade-equipped outdoor folding bed, which includes a metal bed frame. A folding backrest is rotatably mounted on one side of the metal bed frame, and side sleeves are fixedly connected to the front and rear ends of the folding backrest. A telescopic support rod is slidably connected to one side of the side sleeve, and a side bracket is fixedly connected to the side of the telescopic support rod away from the side sleeve. A sunshade main board is rotatably mounted between a group of side brackets. A support rod is rotatably connected to one side of the bottom of the sunshade main board, and an auxiliary baffle is rotatably mounted on the other side of the bottom of the sunshade main board. A pivot fixing component is provided on the outer side of the connecting pivot end at both the front and rear ends of the auxiliary baffle.

[0004] While the above structure facilitates the stable installation of the sunshade main board, the tilt angle between the sunshade main board and the side sleeve and telescopic support is fixed, making it inconvenient for users to flexibly adjust the sunshade main board. Summary of the Invention

[0005] In order to overcome the defects in the prior art, the purpose of this utility model is to provide a folding bed linkage structure that is easy to assemble and produce and easy for users to adjust.

[0006] The purpose of this utility model is achieved as follows:

[0007] A folding bed linkage structure includes a main support and an adjusting support. The main support is provided with a locking device for controlling the relative fixation of the main support and the adjusting support. The locking device includes a first connecting seat and a second connecting seat, which are rotatably connected by a connecting rod. The first connecting seat is detachably connected to the main support, and the second connecting seat is detachably connected to the adjusting support. The first connecting seat and the second connecting seat are respectively provided with a first toothed surface and a second toothed surface, which respectively include a plurality of meshing first meshing teeth and second meshing teeth. The connecting rod is provided with a locking element, which can drive the first meshing teeth and the second meshing teeth to mesh and fix the first connecting seat and the second connecting seat relative to each other.

[0008] The present invention is further configured such that: the first meshing tooth and the second meshing tooth are respectively circumferentially arranged on the outer periphery of the connecting rod, controlling the relative rotation of the first connecting seat and the second connecting seat, and the first meshing tooth can mesh with different second meshing teeth.

[0009] The present invention is further configured such that: the first connecting seat is provided with a hinge protrusion, the second connecting seat is provided with a hinge hole that is rotatably connected to the hinge protrusion, and the connecting rod passes through the hinge protrusion and is rotatably connected to the second connecting seat.

[0010] The present invention is further configured such that: the first connecting seat is provided with an annular first supporting protrusion, the first meshing tooth is provided on the first supporting protrusion, and the first meshing tooth is provided with an inclined first driving surface on both sides; when an external force is applied to the adjusting bracket, the second meshing tooth can abut against the first driving surface and drive the first supporting protrusion to deform, so that the first meshing tooth can pass over the second meshing tooth, and the main bracket and the adjusting bracket can rotate relative to each other.

[0011] The present invention is further configured such that: the second connecting seat is provided with an annular second supporting protrusion, the second meshing tooth is provided on the second supporting protrusion, and the second meshing tooth is provided with an inclined second driving surface on both sides; when an external force is applied to the adjusting bracket, the first meshing tooth can abut against the second driving surface and drive the second supporting protrusion to deform, so that the second meshing tooth can pass over the first meshing tooth, and the main bracket and the adjusting bracket can rotate relative to each other.

[0012] The present invention is further configured such that: the first connecting seat is provided with a U-shaped groove adapted to the main support, the main support passes through the U-shaped groove and restricts the relative rotation between the main support and the first connecting seat, and the locking member can drive the first connecting seat to abut against the main support and keep the U-shaped groove and the main support in cooperation.

[0013] The present invention is further configured such that: the second connecting seat is provided with a plug groove, the adjusting bracket is provided with a plug part adapted to the plug groove, and the connecting rod passes through the plug groove and the plug part to fix the adjusting bracket and the second connecting seat relative to each other.

[0014] The present invention is further configured such that: the connecting rod includes a limiting end and a hinge part, a positioning part is provided between the limiting end and the hinge part, a positioning hole is provided on the main body support, the positioning part cooperates with the positioning hole to restrict the relative rotation of the connecting rod and the main body support, and the limiting end can abut against the end of the positioning hole and prevent the connecting rod from passing through the positioning hole.

[0015] The present invention is further configured such that: the hinge part is provided with a threaded part, the locking member is threadedly connected to the threaded part, the locking member and the connecting rod are controlled to rotate relative to each other, and the positioning member can drive the second connecting seat to abut against the first connecting seat, and make the first meshing tooth and the second meshing tooth mesh with each other.

[0016] The present invention is further configured such that: the outer periphery of the locking member extends to form three control protrusions, and the control protrusions are evenly arranged on the outer periphery of the locking member.

[0017] The advantages of this utility model compared to the prior art are:

[0018] 1. In this utility model, the main support and the adjusting support are respectively detachably provided with a first connecting seat and a second connecting seat. The first connecting seat and the second connecting seat are rotatably connected by a connecting rod. The first connecting seat and the second connecting seat are provided with a first meshing tooth and a second meshing tooth that mesh with each other. The meshing of the first meshing tooth and the second meshing tooth can restrict the relative rotation of the first connecting seat and the second connecting seat and fix the main support and the adjusting support relatively. The structure is simple and convenient for assembly and production. When the user needs to adjust the main support and the adjusting support, the locking part can be loosened to disengage the first meshing tooth from the second meshing tooth, so that the main support and the adjusting support can rotate relative to each other. This allows the user to flexibly adjust the relative position of the main support and the adjusting support, making it convenient for the user to use.

[0019] 2. In this utility model, the first and second meshing teeth arranged circumferentially connect all parts of the circumference of the first and second tooth profiles, which helps to improve the stability of the connection between the first and second connecting seats, avoid damage to the first and second meshing teeth during use, and this structure facilitates multiple relatively fixed positions, making it convenient for users to adjust and use. The setting of the hinge protrusion and hinge hole facilitates the positioning and connection of the first and second meshing teeth, making it convenient for users to adjust the tilt angle of the main support and the adjustment support. This structure also helps to improve the stability of the connection between the first and second connecting seats and helps to extend the service life of the folding bed.

[0020] 3. The first supporting protrusion, the first driving surface, the second supporting protrusion, and the second driving surface in this utility model allow the first or second meshing tooth to be deflected by force. When adjusting the relative position of the main support and the adjusting support, the locking part does not need to be loosened or completely loosened, thus preventing the main support and the adjusting support from rotating freely during the adjustment process and making it convenient for the user to adjust the relative position of the main support and the adjusting support.

[0021] 4. The U-shaped groove structure in this utility model facilitates the quick disassembly and installation of the first connecting seat and the main support, which is convenient for the assembly and production of the folding bed. Moreover, this structure can prevent the first connecting seat and the main support from rotating relative to each other during use, which is beneficial for the fixed installation of the main support and the adjusting support. The plug-in groove structure is simple and facilitates the fixed installation of the second connecting seat and the adjusting support. Furthermore, since the connecting rod passes through the plug-in groove and the plug-in part and fixes the adjusting support and the second connecting seat relative to each other, it is convenient for the assembly and production of the folding bed.

[0022] 5. The limiting end, positioning part, and positioning groove in this utility model facilitate the positioning connection between the connecting rod and the main support, and avoid the relative rotation between the connecting rod and the main support during use affecting the stable installation of the locking part; the threaded part facilitates the locking part to drive the first meshing tooth and the second meshing tooth to mesh with each other, which is beneficial to the stable connection and cooperation of the first connecting seat and the second connecting seat, and also facilitates the adjustment and control of the locking part; the three control protrusions evenly arranged on the outer circumference of the locking part facilitate the user to control the rotation of the locking part and facilitate the adjustment and control of the locking part. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a partial sectional view of the present invention;

[0025] Figure 3 This is an exploded view of the present invention;

[0026] Figure 4 This is a schematic diagram of the main support structure in this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the first connecting seat in this utility model;

[0028] Figure 6 This is a cross-sectional view of the first connecting seat in this utility model;

[0029] Figure 7 This is a schematic diagram of the structure of the second connecting seat in this utility model;

[0030] Figure 8 This is a cross-sectional view of the second connecting seat in this utility model;

[0031] Figure 9 This is a schematic diagram of the connecting rod in this utility model;

[0032] Figure 10 This is a structural schematic diagram of the locking component in this utility model.

[0033] The labels in the diagram mean: 1-Main support; 11-Positioning hole; 2-Adjusting support; 21-Connection part;

[0034] 3-First connecting seat; 31-U-shaped groove; 32-First supporting flange; 33-First deformation groove; 34-First toothed surface; 35-Hinged protrusion; 36-First through hole; 341-First meshing tooth; 342-First driving surface;

[0035] 4-Second connecting seat; 41-Insertion groove; 42-Second support flange; 43-Second deformation groove;

[0036] 44-Second tooth profile; 45-Hinge hole; 46-Second through hole; 431-Support block; 441-Second meshing tooth; 442-Second driving surface; 5-Connecting rod; 51-Limiting end; 52-Positioning part; 53-Hinge part; 54-Threaded part; 6-Locking part; 61-Pressure part; 62-Threaded hole; 63-Control protrusion. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0038] See Figures 1 to 10 As shown, a folding bed linkage structure includes a main support 1 and an adjusting support 2. The main support 1 is provided with a locking device for controlling the relative fixation of the main support 1 and the adjusting support 2. The locking device includes a first connecting seat 3 and a second connecting seat 4. The first connecting seat 3 and the second connecting seat 4 are rotatably connected by a connecting rod 5. The first connecting seat 3 is detachably connected to the main support 1, and the second connecting seat 4 is detachably connected to the adjusting support 2. The first connecting seat 3 and the second connecting seat 4 are respectively provided with a first toothed surface 34 and a second toothed surface 44. The first toothed surface 34 and the second toothed surface 44 are respectively provided with a plurality of mutually meshing first meshing teeth 341 and second meshing teeth 441. The connecting rod 5 is provided with a locking member 6, which can drive the first meshing teeth 341 and the second meshing teeth 441 to mesh and fix the first connecting seat 3 and the second connecting seat 4 relatively.

[0039] In the above structure, the main support 1 and the adjusting support 2 are respectively detachably equipped with a first connecting seat 3 and a second connecting seat 4. The first connecting seat 3 and the second connecting seat 4 are rotatably connected by a connecting rod 5. The first connecting seat 3 and the second connecting seat 4 are provided with a first meshing tooth 341 and a second meshing tooth 441 that mesh with each other. The meshing of the first meshing tooth 341 and the second meshing tooth 441 can restrict the relative rotation of the first connecting seat 3 and the second connecting seat 4 and fix the main support 1 and the adjusting support 2 relatively. The structure is simple and easy to assemble and produce. When the user needs to adjust the main support 1 and the adjusting support 2, the locking part 6 can be loosened to disengage the first meshing tooth 341 from the second meshing tooth 441, so that the main support 1 can rotate relative to the adjusting support 2. This allows the user to flexibly adjust the relative position of the main support 1 and the adjusting support 2, making it convenient for the user to use.

[0040] In this invention, the first meshing tooth 341 and the second meshing tooth 441 are respectively circumferentially arranged on the outer periphery of the connecting rod 5, controlling the relative rotation of the first connecting seat 3 and the second connecting seat 4. The first meshing tooth 341 can mesh with different second meshing teeth 441. The circumferentially arranged first meshing teeth 341 and second meshing teeth 441 connect all parts of the circumference of the first tooth profile surface 34 and the second tooth profile surface 44, which helps to improve the stability of the connection between the first connecting seat 3 and the second connecting seat 4, avoids damage to the first meshing teeth 341 and the second meshing teeth 441 during use, and this structure facilitates multiple relatively fixed positions, making it convenient for users to adjust and use.

[0041] Preferably, the first connecting seat 3 is provided with a hinge protrusion 35, and the second connecting seat 4 is provided with a hinge hole 45 that is rotatably connected to the hinge protrusion 35. The connecting rod 5 passes through the hinge protrusion 35 and is rotatably connected to the second connecting seat 4. The setting of the hinge protrusion 35 and the hinge hole 45 facilitates the positioning and connection of the first meshing tooth 341 and the second meshing tooth 441, making it convenient for the user to adjust the tilt angle of the main support 1 and the adjustment support 2. Moreover, this structure helps to improve the stability of the connection between the first connecting seat 3 and the second connecting seat 4, and helps to extend the service life of the folding bed.

[0042] In this embodiment, the hinge protrusion 35 is provided with a first through hole 36, and the bottom of the hinge hole 45 is provided with a second through hole 46. The first through hole 36 and the second through hole 46 are respectively rotatably connected to the connecting rod 5.

[0043] The first connecting seat 3 is provided with an annular first support flange 32, and a first meshing tooth 341 is provided on the first support flange 32. An inclined first driving surface 342 is provided on both sides of the first meshing tooth 341. When an external force is applied to the adjusting bracket 2, the second meshing tooth 441 can abut against the first driving surface 342 and drive the first support flange 32 to deform, so that the first meshing tooth 341 can pass over the second meshing tooth 441 and cause the main bracket 1 and the adjusting bracket 2 to rotate relative to each other. The arrangement of the first support flange 32 and the first driving surface 342 allows the first meshing tooth 341 to be deflected by force. When adjusting the relative position of the main bracket 1 and the adjusting bracket 2, the locking member 6 does not need to be loosened or not completely loosened, avoiding free rotation of the main bracket 1 and the adjusting bracket 2 during the adjustment process, making it convenient for the user to adjust the relative position of the main bracket 1 and the adjusting bracket 2.

[0044] Preferably, the second connecting seat 4 is provided with an annular second support protrusion 42, and the second meshing tooth 441 is provided on the second support protrusion 42. The second meshing tooth 441 is provided with inclined second driving surfaces 442 on both sides. When an external force is applied to the adjusting bracket 2, the first meshing tooth 341 can abut against the second driving surface 442 and drive the second support protrusion 42 to deform, so that the second meshing tooth 441 can pass over the first meshing tooth 341 and cause the main bracket 1 and the adjusting bracket 2 to rotate relative to each other. The provision of the second support protrusion 42 and the second driving surface 442 allows the second meshing tooth 441 to be deflected by force. When adjusting the relative position of the main bracket 1 and the adjusting bracket 2, the locking member 6 does not need to be loosened or not completely loosened, avoiding free rotation of the main bracket 1 and the adjusting bracket 2 during the adjustment process, and making it convenient for the user to adjust the relative position of the main bracket 1 and the adjusting bracket 2.

[0045] In this embodiment, the first support protrusion 32 is provided with a first deformation groove 33 on the side away from the first meshing surface, and the second meshing tooth 441 can drive the first support protrusion 32 to deform into the first deformation groove 33; the second support protrusion 42 is provided with a second deformation groove 43 on the side away from the second meshing surface, and the first meshing tooth 341 can drive the second support protrusion 42 to deform into the second deformation groove 43. Preferably, a support block 431 is provided in the second deformation groove 43. The support block 431 can reduce the deformation of the second support protrusion 42 during use and prevent the first connecting seat 3 and the second connecting seat 4 from rotating freely.

[0046] In this utility model, the first connecting seat 3 is provided with a U-shaped groove 31 adapted to the main support 1. The main support 1 passes through the U-shaped groove 31 and restricts the relative rotation between the main support 1 and the first connecting seat 3. The locking member 6 can drive the first connecting seat 3 to abut against the main support 1 and keep the U-shaped groove 31 and the main support 1 in cooperation. The structure of the U-shaped groove 31 facilitates the quick disassembly and installation of the first connecting seat 3 and the main support 1, which is convenient for the assembly and production of the folding bed. Moreover, this structure can prevent the relative rotation between the first connecting seat 3 and the main support 1 during use, which is beneficial for the fixed installation of the main support 1 and the adjusting bracket 2.

[0047] In this embodiment, the second connecting seat 4 is provided with a plug groove 41, and the adjusting bracket 2 is provided with a plug part 21 that is adapted to the plug groove 41. The connecting rod 5 passes through the plug groove 41 and the plug part 21 and fixes the adjusting bracket 2 and the second connecting seat 4 relative to each other. The plug groove 41 has a simple structure, which facilitates the fixed installation of the second connecting seat 4 and the adjusting bracket 2. Furthermore, since the connecting rod 5 passes through the plug groove 41 and the plug part 21 and fixes the adjusting bracket 2 and the second connecting seat 4 relative to each other, it facilitates the assembly and production of the folding bed.

[0048] The connecting rod 5 includes a limiting end 51 and a hinge part 53. A positioning part 52 is provided between the limiting end 51 and the hinge part 53. A positioning hole 11 is provided on the main support 1. The positioning part 52 cooperates with the positioning hole 11 to restrict the relative rotation between the connecting rod 5 and the main support 1. The limiting end 51 can abut against the end of the positioning hole 11 and prevent the connecting rod 5 from passing through the positioning hole 11. The setting of the limiting end 51, the positioning part 52 and the positioning groove facilitates the positioning connection between the connecting rod 5 and the main support 1, and avoids the relative rotation between the connecting rod 5 and the main support 1 during use from affecting the stable installation of the locking part 6.

[0049] The hinge portion 53 of this utility model is provided with a threaded portion 54, and the locking member 6 is provided with a threaded hole 62 that is threadedly connected to the threaded portion 54. The locking member 6 and the connecting rod 5 are controlled to rotate relative to each other. The positioning member can drive the second connecting seat 4 to abut against the first connecting seat 3, and make the first meshing tooth 341 and the second meshing tooth 441 mesh with each other. The threaded portion 54 facilitates the locking member 6 to drive the first meshing tooth 341 and the second meshing tooth 441 to mesh with each other, which is beneficial to the stable connection and cooperation of the first connecting seat 3 and the second connecting seat 4, and also facilitates the adjustment and control of the locking member 6.

[0050] Preferably, the locking member 6 is provided with a pressing part 61 for abutting against the second connecting seat 4, and a threaded hole 62 is provided in the pressing part 61.

[0051] In this embodiment, the locking member 6 extends outward to form three control protrusions 63. The control protrusions 63 are evenly distributed around the outer periphery of the locking member 6. The three control protrusions 63 evenly distributed around the outer periphery of the locking member 6 make it easy for the user to control the rotation of the locking member 6 and facilitate the adjustment and control of the locking member 6.

[0052] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A folding bed linkage structure, comprising a main support (1) and an adjusting support (2), wherein the main support (1) is provided with a locking device for controlling the relative fixation of the main support (1) and the adjusting support (2), characterized in that: The locking device includes a first connecting seat (3) and a second connecting seat (4). The first connecting seat (3) and the second connecting seat (4) are rotatably connected by a connecting rod (5). The first connecting seat (3) is detachably connected to the main support (1), and the second connecting seat (4) is detachably connected to the adjusting support (2). The first connecting seat (3) and the second connecting seat (4) are respectively provided with a first toothed surface (34) and a second toothed surface (44). The first toothed surface (34) and the second toothed surface (44) respectively include a plurality of first meshing teeth (341) and second meshing teeth (441) that mesh with each other. The connecting rod (5) is provided with a locking member (6). The locking member (6) can drive the first meshing teeth (341) and the second meshing teeth (441) to mesh and fix the first connecting seat (3) and the second connecting seat (4) relative to each other.

2. The folding bed linkage structure according to claim 1, characterized in that: The first meshing tooth (341) and the second meshing tooth (441) are respectively circumferentially arranged on the outer periphery of the connecting rod (5) to control the relative rotation of the first connecting seat (3) and the second connecting seat (4). The first meshing tooth (341) can mesh with different second meshing teeth (441).

3. The connecting rod structure for a folding bed according to claim 2, characterized in that: The first connecting seat (3) is provided with a hinge protrusion (35), and the second connecting seat (4) is provided with a hinge hole (45) that is rotatably connected to the hinge protrusion (35). The connecting rod (5) passes through the hinge protrusion (35) and is rotatably connected to the second connecting seat (4).

4. A folding bed linkage structure according to claim 2 or 3, characterized in that: The first connecting seat (3) is provided with an annular first support protrusion (32), and the first meshing tooth (341) is provided on the first support protrusion (32). The first meshing tooth (341) is provided with an inclined first driving surface (342) on both sides. When an external force is applied to the adjusting bracket (2), the second meshing tooth (441) can abut against the first driving surface (342) and drive the first support protrusion (32) to deform, so that the first meshing tooth (341) can pass over the second meshing tooth (441) and cause the main bracket (1) and the adjusting bracket (2) to rotate relative to each other.

5. A folding bed linkage structure according to claim 4, characterized in that: The second connecting seat (4) is provided with an annular second support protrusion (42), and the second meshing tooth (441) is provided on the second support protrusion (42). The second meshing tooth (441) is provided with an inclined second driving surface (442) on both sides. When an external force is applied to the adjusting bracket (2), the first meshing tooth (341) can abut against the second driving surface (442) and drive the second support protrusion (42) to deform, so that the second meshing tooth (441) can pass over the first meshing tooth (341) and cause the main bracket (1) and the adjusting bracket (2) to rotate relative to each other.

6. A folding bed linkage structure according to claim 1, 2, 3, or 5, characterized in that: The first connecting seat (3) is provided with a U-shaped groove (31) adapted to the main support (1). The main support (1) passes through the U-shaped groove (31) and restricts the relative rotation between the main support (1) and the first connecting seat (3). The locking member (6) can drive the first connecting seat (3) to abut against the main support (1) and keep the U-shaped groove (31) and the main support (1) in cooperation.

7. A folding bed linkage structure according to claim 6, characterized in that: The second connecting seat (4) is provided with a plug groove (41), and the adjusting bracket (2) is provided with a plug part (21) that is adapted to the plug groove (41). The connecting rod (5) passes through the plug groove (41) and the plug part (21) and fixes the adjusting bracket (2) relative to the second connecting seat (4).

8. A folding bed linkage structure according to claim 1, 2, 3, 5, or 7, characterized in that: The connecting rod (5) includes a limiting end (51) and a hinge part (53). A positioning part (52) is provided between the limiting end (51) and the hinge part (53). A positioning hole (11) is provided on the main support (1). The positioning part (52) cooperates with the positioning hole (11) to restrict the relative rotation between the connecting rod (5) and the main support (1). The limiting end (51) can abut against the end of the positioning hole (11) and prevent the connecting rod (5) from passing through the positioning hole (11).

9. A folding bed linkage structure according to claim 8, characterized in that: The hinge (53) is provided with a threaded part (54), and the locking member (6) is threadedly connected to the threaded part (54). The locking member (6) and the connecting rod (5) are controlled to rotate relative to each other. The positioning member can drive the second connecting seat (4) to abut against the first connecting seat (3) and make the first meshing tooth (341) and the second meshing tooth (441) mesh with each other.

10. A folding bed linkage structure according to claim 9, characterized in that: The locking member (6) extends outward to form three control protrusions (63), and the control protrusions (63) are evenly arranged around the outer periphery of the locking member (6).

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