A swing for a baby

Abstract

A swing crib comprises two support devices and a bed frame, the two support devices are left-right symmetrical, the top of the support device is provided with a joint buckle, the top of the support device is provided with a push key for moving the joint buckle left and right; the bed frame comprises an upper bed frame, a lower bed frame and two left-right symmetrical connecting devices, the connecting device comprises a bed frame clamping seat and a connecting pipe, the upper bed frame is connected between the top of the bed frame clamping seat of the two connecting devices, the lower bed frame is connected between the bottom of the connecting pipe of the two connecting devices, the support device is swingably connected with the bed frame clamping seat, the side surface of the bed frame clamping seat close to the support device is provided with a socket, one end of the joint buckle close to the bed frame clamping seat extends out of the support device and can be inserted into the socket, the support device is provided with a connecting piece, the top of the connecting piece is hinged with a reversible U-shaped limiting buckle, when the U-shaped limiting buckle is horizontal, the connecting pipe is located in the opening of the U-shaped limiting buckle.

Description

Technical Field

[0001] This utility model relates to the field of children's furniture, specifically a rocking crib. Background Technology

[0002] A crib is a bed specifically designed for infants and toddlers for sleeping and resting. It's not only a baby's first "nest" after birth, but also an important piece of furniture providing a safe, comfortable, and independent sleeping space. Existing cribs include a left support unit, a right support unit, and a bassinet connecting the left and right support units, with the bassinet fixed relative to the left and right support units. A cradle is a piece of furniture that soothes a baby through gentle, rhythmic rocking. It complements the fixed standard crib; the gentle rocking provides a great sense of security and comfort, helping the baby calm down quickly and fall asleep more easily. However, currently available cribs do not offer the dual function of being both a sleeping bed and a cradle. Utility Model Content

[0003] This utility model provides a rocking baby bed, the main purpose of which is to overcome the problem that existing baby beds cannot be used as cradles.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A rocking crib includes two support devices and a bed frame. The two support devices are symmetrical. Each support device has a joint buckle at its top and a push button at its top that moves the joint buckle left and right. The bed frame includes an upper bed frame, a lower bed frame, and two symmetrical connecting devices. Each connecting device includes a bed frame holder and a connecting tube. The upper bed frame is connected between the tops of the bed frame holders of the two connecting devices, and the lower bed frame is connected between the bottoms of the connecting tubes of the two connecting devices. Each support device corresponds to one connecting device. The support devices are swayably connected to the bed frame holders. The bed frame holders have a socket on the side near the support devices. One end of the joint buckle near the bed frame holder extends out of the support device and can be inserted into the socket. Each support device has a connector. The top of the connector is hinged with a flip-up U-shaped limit buckle. When the U-shaped limit buckle is horizontal, the connecting tube is located in the opening of the U-shaped limit buckle.

[0005] Furthermore, the support device includes a support leg, a support tube, a telescopic tube, and an upper joint. The support tube is connected to the top of the support leg, and the upper part of the support tube is fitted inside the telescopic tube. The telescopic tube is telescopically oriented. The upper joint is connected to the top of the telescopic tube. The upper joint is provided with the joint buckle. The top of the upper joint is provided with the push key. The upper joint is swayably connected to the bed frame seat. The end of the joint buckle near the bed frame seat extends out of the upper joint. The connecting member is located at the bottom of the telescopic tube.

[0006] Furthermore, the upper joint includes an upper joint housing and an upper joint cover connected within the upper joint housing. The upper part of the upper joint cover has an active space, and the joint buckle is located within the active space. The top of the upper joint cover has an active opening, and the bottom of the push key has a connecting rod. The connecting rod passes through the active opening and connects to the joint buckle. The end of the joint buckle near the bed frame seat extends out of the upper joint cover.

[0007] Furthermore, the connecting rod has arc-shaped protrusions on both its front and rear sides, and the top of the upper joint cover has two strip grooves arranged front to back. Two elastic strips are formed between the two strip grooves and the movable opening. The elastic strips have two arc-shaped slots arranged left to right on their sides near the movable opening, and the arc-shaped protrusions are engaged in the arc-shaped slots.

[0008] Furthermore, the top of the support tube is connected to an installation component, and the installation component contains a retractable stop block. One side of the telescopic tube has multiple slots arranged vertically. One end of the stop block extends out of the installation component and is inserted into the slot. One end face of the stop block is an inclined surface, and the inclined surface of the stop block can abut against the bottom of the slot.

[0009] Furthermore, the mounting component includes a lifting block in the shape of an inverted U. A horizontal moving block is located within the opening of the lifting block. The stop block is connected to one end of the horizontal moving block. The upper joint has a button slot containing a pressable button. A steel cable connects the button and the lifting block. When the lifting block moves up and down, it drives the horizontal moving block to move left and right. The mounting component includes a first spring that abuts against the other end of the horizontal moving block. The upper joint includes a second spring that abuts against the top of the button.

[0010] Furthermore, the lifting block is provided with two inclined grooves arranged in the front and rear, and the front and rear sides of the horizontal moving block are provided with shafts, each inclined groove corresponding to a shaft, and the shaft is located in the inclined groove.

[0011] Furthermore, a swing crank is provided between the upper joint cover and the bed frame seat. The upper joint cover has a first bearing hole and a second bearing hole arranged on the left and right, and a first bearing and a second bearing are respectively installed in the first bearing hole and the second bearing hole. One end of the swing crank passes through the second bearing and the first bearing. The lower part of the bed frame seat has a third bearing hole and a fourth bearing hole arranged on the left and right, and a third bearing and a fourth bearing are respectively installed in the third bearing hole and the fourth bearing hole. The other end of the swing crank passes through the third bearing and the fourth bearing.

[0012] Furthermore, two horizontal tubes arranged in a front-to-back manner are connected between the support legs of the two support devices.

[0013] Furthermore, a knob is fitted around the outer periphery of both ends of the horizontal tube, and a tube plug is inserted into both ends of the horizontal tube. The end of the tube plug has a first contact edge that abuts against the end face of the horizontal tube. The end of the knob near the support foot has an external thread, and the end face of the external thread can abut against the first contact edge. The support foot has an internal thread hole, and a retaining ring is provided on one side of the support foot. A second contact edge is formed between the knob and the external thread. The end of the horizontal tube and the external thread extend into the support foot through the retaining ring, and the external thread is threadedly connected to the internal thread hole.

[0014] As can be seen from the above description of this utility model, compared with the prior art, this utility model has the following advantages: When the joint buckle is inserted into the socket, the support device and the bed frame seat are fixed. At the same time, when the U-shaped limit buckle is in a horizontal state, it can hold the connecting tube. At this time, the bed frame cannot swing, and the baby can rest quietly in the bed frame. When the U-shaped limit buckle is flipped, it can remove the restriction on the connecting tube. Then, by pushing the push key, the push key can cause the joint buckle to disengage from the socket. At this time, the support device and the bed frame seat are no longer fixed. Under the push of external force, the bed frame can swing. At this time, the bed frame can be used as a cradle. The baby can be gently rocked with the bed frame, so that the baby can be soothed and fall asleep more easily. This utility model can realize the dual functions of a regular crib and a cradle. The joint buckle and the U-shaped limit buckle can play a dual positioning role for the bed frame. Before pushing the joint buckle to unlock it, the U-shaped limit buckle must be flipped to face upwards. This can effectively prevent the bed frame from swinging due to accidental operation of the push key when it does not need to swing. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the present invention.

[0016] Figure 2 This is an exploded view of the support device and bed frame seat of this utility model.

[0017] Figure 3This is an exploded view of the support device and bed frame seat of this utility model from another angle.

[0018] Figure 4 This is an exploded view of the upper joint and bed frame seat of this utility model.

[0019] Figure 5 This is an exploded view of the upper joint and bed frame seat of this utility model from another angle.

[0020] Figure 6 This is an exploded view of the push key and upper joint cover of this utility model.

[0021] Figure 7 This is a diagram showing the connection structure between the mounting component and the steel rope of this utility model.

[0022] Figure 8 This is an exploded view of the installation component and steel rope of this utility model.

[0023] Figure 9 This is a cross-sectional view showing the connection between the horizontal tube and the support leg of this utility model. Detailed Implementation

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Reference Figures 1 to 4 A rocking crib includes two support devices 1 and a bed frame 2. The two support devices 1 are symmetrical. Each support device 1 has a joint buckle 61 at its top and a push button 62 at its top to move the joint buckle 61 left and right. The bed frame 2 includes an upper bed frame 21, a lower bed frame 22, and two symmetrical connecting devices 23. Each connecting device 23 includes a bed frame holder 24 and a connecting tube 25. The upper bed frame 21 is connected between the tops of the bed frame holders 24 of the two connecting devices 23, and the lower bed frame 22 is connected between the bottoms of the connecting tubes 25 of the two connecting devices 23. Each support device 1 corresponds to one connecting device 23. The support device 1 and the bed frame holder 24 are swayably connected. The bed frame holder 24 has a socket 241 on its side near the support device 1. One end of the joint buckle 61 near the bed frame holder 24 extends out of the support device 1 and can be inserted into the socket 241. The support device 1 is provided with a connector 7, and a flip-out U-shaped limit buckle 8 is hinged to the top of the connector 7. When the U-shaped limit buckle 8 is horizontal, the connecting tube 25 is located in the opening of the U-shaped limit buckle 8.

[0028] Reference Figures 1 to 4 The support device 1 includes a support leg 3, a support tube 4, a telescopic tube 5, and an upper joint 6. The support tube 4 is connected to the top of the support leg 3, and the upper part of the support tube 4 is fitted inside the telescopic tube 5. The telescopic tube 5 is telescopically oriented. The upper joint 6 is connected to the top of the telescopic tube 5. The upper joint 6 is provided with a joint buckle 61, and the top of the upper joint 6 is provided with a push key 62. The upper joint 6 is swayably connected to the bed frame seat 24. The end of the joint buckle 61 near the bed frame seat 24 extends out of the upper joint 6. The connecting piece 7 is located at the bottom of the telescopic tube 5.

[0029] Reference Figures 1 to 4The upper joint 6 includes an upper joint housing 63 and an upper joint cover 64 connected within the upper joint housing 63. Both the upper joint housing 63 and the upper joint cover 64 are made of plastic. The upper part of the upper joint cover 64 has an active space 641, and the joint buckle 61 is located within the active space 641. The top of the upper joint cover 64 has an active opening 642, and the bottom of the push key 62 has a connecting rod 65. The connecting rod 65 passes through the active opening 642 and connects to the joint buckle 61. The end of the joint buckle 61 near the bed frame seat 24 extends out of the upper joint cover 64.

[0030] Reference Figure 4 and Figure 6 The connecting rod 65 has arc-shaped protrusions 651 on both its front and rear sides. The top of the upper joint cover 64 has two strip grooves 643 arranged front to back. Two elastic strips 644 are formed between the two strip grooves 643 and the movable opening 642. The elastic strips 644 have two arc-shaped slots 645 arranged left to right on their sides near the movable opening 642. The arc-shaped protrusions 651 are engaged in the arc-shaped slots 645.

[0031] Reference Figure 4 and Figure 6 When the joint buckle 61 is inserted into the socket 241, the arc protrusion 651 is engaged in the arc slot 645 arranged on the right. When the push key 62 is pushed to the left, the elastic strip 644 will deform under the action of the arc protrusion 651 until the arc protrusion 651 is engaged in the arc slot 645 arranged on the left. At this time, the joint buckle 61 is disengaged from the socket 241, and the upper joint cover 64 and the bed frame seat 24 lose their locking function.

[0032] Reference Figures 1 to 5A swing crank 9 is provided between the upper joint cover 64 and the bed frame seat 24. Specifically, the upper joint cover 64 has a first bearing hole 646 and a second bearing hole 647 arranged on the left and right sides. A first bearing 10 and a second bearing 11 are respectively provided in the first bearing hole 646 and the second bearing hole 647. One end of the swing crank 9 passes through the second bearing 11 and the first bearing 11. One end of the swing crank 9 is provided with a first screw hole 91. After passing through the second bearing 11 and the first bearing 10, the swing crank 9 is locked by a first screw 93. The first screw 93 is threadedly connected to the first screw hole 91. After the first screw 93 is locked, its head abuts against the first bearing 10. The lower part of the bed frame holder 24 is provided with a third bearing hole 242 and a fourth bearing hole 243 arranged left and right. A third bearing 12 and a fourth bearing 13 are respectively installed in the third bearing hole 242 and the fourth bearing hole 243. The other end of the swing crank 9 passes through the third bearing 12 and the fourth bearing 13. The other end of the swing crank 9 is provided with a second screw hole 92. After passing through the third bearing 12 and the fourth bearing 13, the other end of the swing crank 9 is locked by a second screw 94. The second screw 94 is threadedly connected to the second screw hole 92. After the second screw 94 is locked, its head abuts against the fourth bearing 13. In this embodiment, there are two swing cranks 9, with two each of the first bearing hole 646, the second bearing hole 647, the first bearing 10, the second bearing 11, the third bearing hole 242, the fourth bearing hole 243, the third bearing 12, the fourth bearing 13, the first screw 93, and the second screw 94.

[0033] Reference Figures 1 to 6 When the joint buckle 61 is inserted into the socket 241, the upper joint cover 64 and the bed frame seat 24 are fixed. Simultaneously, when the U-shaped limit buckle 8 is in a horizontal position, it can hold the connecting tube 25. At this time, the bed frame 2 cannot swing, and the baby can rest quietly inside the bed frame. When the U-shaped limit buckle 8 is flipped, it can no longer restrict the connecting tube 25. Then, by pushing the push key 62, the joint buckle 61 can disengage from the socket 241. At this time, the upper joint cover 64 and the bed frame seat 24 are no longer fixed, and the bed frame 2 can swing under external force. The bed frame 2 can then be used as a cradle. The push key 62 and the U-shaped limit buckle 8 form a double-lock structure. To unlock the bed frame seat 24, the U-shaped limit buckle 8 must first be flipped upwards before pushing the push key 62.

[0034] Reference Figures 1 to 3 , Figure 7 and Figure 8The top of the support tube 4 is connected to an installation component 14, which is located inside the telescopic tube 5. The installation component 14 is provided with a telescopic stop block 15. One side of the telescopic tube 5 is provided with multiple slots 51 arranged vertically. One end of the stop block 15 extends out of the installation component 14 and is inserted into the slot 51. One end face of the stop block 15 is an inclined surface 151, which can abut against the bottom of the slot 51.

[0035] Reference Figures 1 to 4 , Figure 7 and Figure 8 The mounting component 14 contains a lifting block 16, which is inverted U-shaped. A horizontal moving block 17 is located within the opening of the lifting block 16. The stop block 15 is connected to one end of the horizontal moving block 17. The upper joint 6 has a button groove 66, specifically located on the upper joint housing 63. A pressable button 18 is located within the button groove 66. A steel cable 19 connects the button 18 and the lifting block 16. When the lifting block 16 rises and falls, it drives the horizontal moving block 17 to move left and right. The mounting component 14 contains a first spring 20 that abuts against the other end of the horizontal moving block 17. The upper joint 6 contains a second spring 67 that abuts against the top of the button 18. Specifically, the second spring 67 is located in the upper part of the upper joint housing 63. The lifting block 16 is provided with two inclined grooves 161 arranged in front and behind. The front and rear sides of the horizontal moving block 17 are provided with shaft portions 171. Each inclined groove 161 corresponds to a shaft portion 171, and the shaft portion 171 is located in the inclined groove 161.

[0036] Reference Figures 1 to 4 , Figure 7 and Figure 8When the stop block 15 is inserted into the slot 51, the shaft 171 is located at the top of the inclined groove 161. The telescopic tube 5 can be raised and lowered to adjust the height of the bed frame 2. When the height of the bed frame 2 needs to be increased, the upper joints 6 of the two support devices 1 can be lifted, and force is applied to the inclined surface 151 of the stop block 15 through the bottom of the slot 51 of the telescopic tube 5, so that the stop block 15 can retract and disengage from the slot 51. When the stop block 15 is aligned with the next slot 51, the stop block 15 automatically inserts into the next slot 51 under the action of the first spring 20. In this way, the telescopic tube 5 can be infinitely adjusted upwards, thereby realizing the infinitely adjustable upwards of the bed frame 2. The height of the bed frame 2 can also be adjusted by pressing the button 18. When the button 18 on the two upper joints 6 is pressed, the button 18 can drive the lifting block 16 to rise. After the lifting block 16 rises, with the cooperation of the inclined groove 161 and the shaft 171, the horizontal moving block 17 and the stop block 15 can retract, so that the stop block 15 disengages from the original slot 51. At this time, the two upper joints 6 can be lifted or pressed down to adjust the height of the bed frame 2. When the bed frame 2 is adjusted to the required height, the button 18 is released. Under the action of the second spring 67, the button 18, the steel rope 19 and the lifting block 16 descend simultaneously. With the cooperation of the inclined groove 161 and the shaft 171 and the action of the first spring 20, the horizontal moving block 17 and the stop block 15 extend back toward the slot 51, and the stop block 15 is reinserted into the new slot 51.

[0037] Reference Figure 1 , Figure 3 and Figure 9 Two horizontal tubes 31, arranged front to back, are connected between the support legs 3 of the two support devices 1. A knob 32 is fitted around the outer periphery of each end of the horizontal tube 31, and a tube plug 33 is inserted into each end of the horizontal tube 31. The end of the tube plug 33 has a first contact edge 331 that abuts against the end face of the horizontal tube 31. The end of the knob 32 near the support leg has an external thread 321, the end face of which abuts against the first contact edge 331. The support leg 3 has an internal threaded hole 34, and a retaining ring 35 is provided on one side of the support leg 3. A second contact edge 322 is formed between the knob 32 and the external threaded part 321. The end of the horizontal tube 31 and the external threaded part 321 pass through the retaining ring 35 and extend into the support leg 3. The external threaded part 321 is threadedly connected to the internal threaded hole 34.

[0038] Reference Figure 1 , Figure 3 and Figure 9The horizontal tube 31 strengthens the connection between the support legs 3 of the two support devices 1. When connecting the horizontal tube 31 to the support legs 3, the end of the horizontal tube 31 and the external threaded part 321 pass through the retaining ring 35 and extend into the support leg 3. Then, the knob 32 is tightened to connect the external threaded part 321 with the internal threaded hole 34, so that the horizontal tube 31 is securely connected between the support legs 3 of the two support devices 1. After the knob 32 is tightened, the end face of the external threaded part 321 abuts against the first contact edge 331, and the first contact edge 322 abuts against the retaining ring 35.

[0039] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. A rocking baby crib, characterized in that: The device includes two supporting devices and a bed frame. The two supporting devices are symmetrical. Each supporting device has a joint buckle at its top and a push key at its top that moves the joint buckle left and right. The bed frame includes an upper bed frame, a lower bed frame, and two symmetrical connecting devices. Each connecting device includes a bed frame holder and a connecting tube. The upper bed frame is connected between the top of the bed frame holders of the two connecting devices, and the lower bed frame is connected between the bottom of the connecting tubes of the two connecting devices. Each supporting device corresponds to one connecting device. The supporting devices and the bed frame holders are swayably connected. The side of the bed frame holder near the supporting device has an insertion port. One end of the joint buckle near the bed frame holder extends out of the supporting device and can be inserted into the insertion port. Each supporting device has a connector. The top of the connector is hinged with a flip-up U-shaped limit buckle. When the U-shaped limit buckle is horizontal, the connecting tube is located in the opening of the U-shaped limit buckle.

2. A rocking baby crib as described in claim 1, characterized in that: The support device includes a support leg, a support tube, a telescopic tube, and an upper joint. The support tube is connected to the top of the support leg, and the upper part of the support tube is fitted inside the telescopic tube. The telescopic tube is telescopically oriented. The upper joint is connected to the top of the telescopic tube. The upper joint has a joint buckle inside and a push key at the top. The upper joint is swayably connected to the bed frame seat. The end of the joint buckle near the bed frame seat extends out of the upper joint. The connector is located at the bottom of the telescopic tube.

3. A rocking baby crib as described in claim 2, characterized in that: The upper joint includes an upper joint housing and an upper joint cover connected within the upper joint housing. The upper part of the upper joint cover has an active space, and the joint buckle is located within the active space. The top of the upper joint cover has an active opening, and the bottom of the push key has a connecting rod. The connecting rod passes through the active opening and connects to the joint buckle. The end of the joint buckle near the bed frame seat extends out of the upper joint cover.

4. A rocking baby crib as described in claim 3, characterized in that: The connecting rod has arc-shaped protrusions on its front and rear sides. The top of the upper joint cover has two strip grooves arranged front to back. Two elastic strips are formed between the two strip grooves and the movable opening. The elastic strips have two arc-shaped slots arranged left to right on their sides near the movable opening. The arc-shaped protrusions are engaged in the arc-shaped slots.

5. A rocking baby crib as described in claim 2, characterized in that: The top of the support tube is connected to an installation component, and the installation component contains a retractable stop block. One side of the telescopic tube has multiple slots arranged vertically. One end of the stop block extends out of the installation component and is inserted into the slot. One end of the stop block is an inclined surface, and the inclined surface of the stop block can abut against the bottom of the slot.

6. A rocking baby crib as described in claim 5, characterized in that: The mounting component includes a lifting block, which is inverted U-shaped. A horizontal moving block is located inside the opening of the lifting block. The stop block is connected to one end of the horizontal moving block. The upper joint has a button slot, and a pressable button is located inside the button slot. A steel cable connects the button and the lifting block. When the lifting block moves up and down, it drives the horizontal moving block to move left and right. The mounting component includes a first spring that abuts against the other end of the horizontal moving block. The upper joint includes a second spring that abuts against the top of the button.

7. A rocking baby crib as described in claim 6, characterized in that: The lifting block is provided with two inclined slots arranged in front and behind, and the horizontal moving block is provided with shafts on the front and rear sides. Each inclined slot corresponds to a shaft, and the shaft is located in the inclined slot.

8. A rocking baby crib as described in claim 3, characterized in that: A swinging crank is provided between the upper joint cover and the bed frame seat. The upper joint cover has a first bearing hole and a second bearing hole arranged on the left and right. The first bearing hole and the second bearing hole are respectively provided with a first bearing and a second bearing. One end of the swinging crank passes through the second bearing and the first bearing. The lower part of the bed frame seat has a third bearing hole and a fourth bearing hole arranged on the left and right. The third bearing hole and the fourth bearing hole are respectively provided with a third bearing and a fourth bearing. The other end of the swinging crank passes through the third bearing and the fourth bearing.

9. A rocking baby crib as described in claim 2, characterized in that: Two horizontal pipes arranged in a front-to-back manner are connected between the support legs of the two support devices.

10. A rocking baby crib as described in claim 9, characterized in that: Both ends of the horizontal tube are fitted with knobs on their outer circumferences. Both ends of the horizontal tube are fitted with tube plugs. The end of the tube plug has a first contact edge that abuts against the end face of the horizontal tube. The end of the knob near the support foot has an external thread. The end face of the external thread can abut against the first contact edge. The support foot has an internal thread hole. One side of the support foot has a retaining ring. A second contact edge is formed between the knob and the external thread. The end of the horizontal tube and the external thread extend into the support foot through the retaining ring. The external thread is threadedly connected to the internal thread hole.

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