Downward-pressing adjusting device for handrail

Abstract

The utility model discloses a press-down adjusting device for a handrail, which comprises a connecting seat body, the other end of the connecting seat body is provided with a mounting groove, a press-down rotating head capable of driving the handrail to press down and adjust is arranged in the mounting groove, and the press-down rotating head is rotatably mounted in the mounting groove through a rotating shaft. A pair of telescopic steel balls are arranged at the bottom of the downward pressing rotating head, a plurality of pairs of gear grooves are formed in the bottom of the mounting groove, a lock head is arranged on one side of the downward pressing rotating head, a downward pressing stroke groove for limiting the rotating stroke of the lock head is formed in the inner side of the mounting groove, and a switch mounting groove is formed in one side of the connecting base body. The downward pressing adjusting device can stably drive the handrail to conduct downward pressing adjustment, the longitudinal angle of the handrail can be changed, the downward pressing adjusting device has a locking function, the locking function is achieved, and the locking function is achieved. Therefore, the handrail is kept in a fixed position state when the handrail is adjusted at any gear.

Description

Technical Field

[0001] The utility model belongs to the technical field of armrest adjustment, and in particular relates to a downward pressure adjustment device for an armrest. Background Art

[0002] The armrest is an important component of the seat, and is generally fixed to the seat body by bolts, and the armrest serves to support the arm. In order to better adapt to different conditions, the existing armrests are relatively fixed, and it is impossible to quickly complete the downward adjustment, and to ensure a stable locking state after adjustment. Therefore, the utility model proposes a downward adjustment device for the armrest. Utility Model Content

[0003] The purpose of the utility model is to provide a downward adjustment device for an armrest to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a downward pressure adjustment device for an armrest, comprising a connecting seat body, one end of the connecting seat body is provided with an assembling hole for connecting to a lifting seat, the assembling hole is provided with a limiting cap, the other end of the connecting seat body is provided with a mounting groove, a downward pressure rotating head that can drive the armrest to be pressed down and adjusted is provided in the mounting groove, and the downward pressure rotating head is rotatably installed in the mounting groove through a rotating shaft, a pair of retractable retractable steel balls are provided at the bottom of the downward pressure rotating head, two pairs of gear grooves are provided at the bottom of the mounting groove, the retractable steel balls can be engaged with any pair of gear grooves, a connecting column for connecting the armrest is provided at the top of the downward pressure rotating head, a lock is provided on one side of the downward pressure rotating head, a downward pressure stroke groove for limiting the rotation stroke of the lock is provided on the inner side of the mounting groove, a switch mounting groove is provided on one side of the connecting seat body, the switch mounting groove and the downward pressure stroke groove are communicated with each other, and a switch assembly that can cooperate with the lock to lock the downward pressure rotating head is provided in the switch mounting groove.

[0005] Preferably, the switch assembly includes a switch telescopic rod located on the inner side of the switch mounting slot, a spring mounting hole being provided at one inner end of the switch telescopic rod, a spring being installed in the spring mounting hole, the other end of the spring being connected to the inner end of the switch mounting slot, the other end of the switch telescopic rod extending to the outside of the opening of the switch mounting slot, a blocking bar for blocking the rotation of the lock head being provided on the switch telescopic rod, and an unlocking slot for allowing the lock head to pass through being provided at one end of the blocking bar.

[0006] Preferably, in a natural state, the blocking bar corresponds to the lock head, and the blocking bar and the lock head are against each other, and when the switch telescopic rod is pushed into the switch installation groove, the lock head is aligned with the unlocking groove.

[0007] Preferably, a travel anti-slip groove for limiting the telescopic travel of the switch telescopic rod is provided on the other side of the switch telescopic rod, a limit pin is provided in the travel anti-slip groove, and both ends of the limit pin are connected to the connecting seat body.

[0008] Preferably, the telescopic steel ball consists of a steel ball and a connecting spring, and a mounting circular groove for the steel ball to be telescopic is provided at the bottom of the downward-pressing rotating head, one end of the connecting spring is connected to the mounting circular groove, and the other end is connected to the steel ball.

[0009] Preferably, the shape and size of the downward pressing stroke groove match the shape and size of the lock head.

[0010] Preferably, the arc angle of rotation of the lock head is the same as the arc angle formed between the first and last pairs of shift grooves.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the downward pressure adjustment device designed in the present invention can stably drive the armrest to be adjusted downward, thereby realizing the change of the longitudinal angle of the armrest, and the downward pressure adjustment device has a locking function, so that the armrest remains in a fixed position when adjusted in any gear and will not change easily. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the overall top view structure of the utility model;

[0014] Figure 3 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0015] Figure 4 It is a schematic diagram of the overall explosion structure of the utility model;

[0016] Figure 5 It is a schematic diagram of the three-dimensional structure of the connecting seat body of the utility model;

[0017] Figure 6 It is a three-dimensional structural schematic diagram of the downward pressing rotating head of the utility model;

[0018] Figure 7 It is a cross-sectional structural schematic diagram of the downward pressing rotating head of the utility model;

[0019] Figure 8 It is an overall schematic diagram of the downward pressure adjustment device and the handrail installation of the utility model.

[0020] In the figure: 1. Connecting seat body; 2. Pressing rotating head; 3. Connecting column; 4. Limiting cap; 5. Switch telescopic rod; 6. Limit pin; 7. Lock head; 8. Spring mounting hole; 9. Assembly hole; 10. Rotating shaft; 11. Pressing stroke groove; 12. Mounting groove; 13. Shifting groove; 14. Unlocking groove; 15. Blocking bar; 16. Spring; 17. Stroke anti-slip groove; 18. Switch mounting groove; 19. Telescopic steel ball; 20. Mounting circular groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1

[0023] See also Figures 1 to 8 , a technical solution is provided: a downward pressure adjustment device for an armrest, comprising a connecting seat body 1, one end of the connecting seat body 1 is provided with an assembly hole 9 for connecting a lifting seat, the assembly hole 9 is provided with a limiting cap 4, the other end of the connecting seat body 1 is provided with a mounting groove 12, a downward pressure rotating head 2 that can drive the downward pressure adjustment of the armrest is provided in the mounting groove 12, and the downward pressure rotating head 2 is rotatably installed in the mounting groove 12 through a rotating shaft 10 to ensure the rotation of the downward pressure rotating head 2, a pair of retractable retractable steel balls 19 are provided at the bottom of the downward pressure rotating head 2, and two pairs of gear slots 13 are provided at the bottom of the mounting groove 12, and the retractable steel balls 19 can be with any one The gear groove 13 is engaged, and the downward pressure of the armrest is adjusted by engaging the telescopic steel ball 19 with the gear groove 13 at different positions. A connecting column 3 for connecting the armrest is provided on the top of the downward pressing rotating head 2, and a locking head 7 is provided on one side of the downward pressing rotating head 2. A downward pressing stroke groove 11 for limiting the rotation stroke of the locking head 7 is provided on the inner side of the mounting groove 12. A switch mounting groove 18 is provided on one side of the connecting seat body 1. The switch mounting groove 18 is connected with the downward pressing stroke groove 11, and a switch component that can cooperate with the locking head 7 to lock the downward pressing rotating head 2 is provided in the switch mounting groove 18; by locking the locking head 7, the downward pressing rotating head 2 is locked. In this embodiment, preferably, the switch assembly includes a switch telescopic rod 5 located on the inner side of the switch mounting groove 18, a spring mounting hole 8 is provided at one inner end of the switch telescopic rod 5, a spring 16 is installed in the spring mounting hole 8, the other end of the spring 16 is connected to the inner end of the switch mounting groove 18, the other end of the switch telescopic rod 5 extends to the outside of the opening of the switch mounting groove 18, a blocking bar 15 for blocking the lock head 7 from rotating is provided on the switch telescopic rod 5, and an unlocking groove 14 for the lock head 7 to pass through is provided at one end of the blocking bar 15.

[0024] In this embodiment, preferably, in the natural state, the blocking bar 15 corresponds to the lock head 7, and the blocking bar 15 blocks the lock head 7 to achieve the locking function. When the switch telescopic rod 5 is pushed into the switch installation groove 18, the lock head 7 is aligned with the unlocking groove 14, ensuring that the lock head 7 is unlocked, so that the downward pressing rotating head 2 can be rotated for adjustment. In this embodiment, preferably, the other side of the switch telescopic rod 5 is provided with a travel anti-slip groove 17 for limiting the telescopic travel of the switch telescopic rod 5, and a limit pin 6 is provided in the travel anti-slip groove 17. Both ends of the limit pin 6 are connected to the connecting seat body 1. The limit pin 6 is in the travel anti-slip groove 17 to play an anti-slip effect, and the travel size of the switch telescopic rod 5 is limited to ensure that pressing the switch telescopic rod 5 can accurately align the lock head 7 with the unlocking groove 14. In this embodiment, preferably, the telescopic steel ball 19 is composed of a steel ball and a connecting spring, and the bottom of the downward pressing rotating head 2 is provided with a mounting circular groove 20 for the steel ball to be telescopic, and one end of the connecting spring is connected to the mounting circular groove 20, and the other end is connected to the steel ball. In this embodiment, preferably, the shape and size of the downward stroke groove 11 match the shape and size of the lock head 7. In this embodiment, preferably, the arc angle of the rotation of the lock head 7 is the same as the arc angle formed between the first and last pairs of gear grooves 13, in order to ensure that the telescopic steel ball 19 can be accurately aligned and engaged with any gear groove 13.

[0025] Although the embodiments of the present invention have been shown and described (see the above detailed description for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A downward adjustment device for an armrest, comprising a connecting seat (1), characterized in that: One end of the connecting seat body (1) is provided with an assembly hole (9) for connecting the lifting seat, and a limiting cap (4) is arranged on the assembly hole (9). The other end of the connecting seat body (1) is provided with a mounting groove (12), and a downward pressing rotating head (2) is arranged in the mounting groove (12) for driving the handrail to be pressed downward for adjustment, and the downward pressing rotating head (2) is rotatably installed in the mounting groove (12) through a rotating shaft (10), and a pair of retractable telescopic steel balls (19) are arranged at the bottom of the downward pressing rotating head (2), and a plurality of pairs of gear slots (13) are arranged at the bottom of the mounting groove (12). (19) can be engaged with any pair of gear slots (13), a connecting column (3) for connecting to an armrest is provided at the top of the downward pressing rotating head (2), a locking head (7) is provided on one side of the downward pressing rotating head (2), a downward pressing stroke slot (11) for limiting the rotation stroke of the locking head (7) is provided on the inner side of the mounting slot (12), a switch mounting slot (18) is provided on one side of the connecting seat body (1), the switch mounting slot (18) and the downward pressing stroke slot (11) are connected to each other, and a switch component is provided in the switch mounting slot (18) that can cooperate with the locking head (7) to lock the downward pressing rotating head (2).

2. A downward adjustment device for an armrest according to claim 1, characterized in that: The switch assembly comprises a switch telescopic rod (5) located inside a switch mounting groove (18); a spring mounting hole (8) is provided at one end of the inner side of the switch telescopic rod (5); a spring (16) is installed in the spring mounting hole (8); the other end of the spring (16) is connected to the inner end of the switch mounting groove (18); the other end of the switch telescopic rod (5) extends to the outside of the opening of the switch mounting groove (18); a blocking bar (15) for blocking the rotation of the lock head (7) is provided on the switch telescopic rod (5); and an unlocking groove (14) for allowing the lock head (7) to pass is provided at one end of the blocking bar (15).

3. A downward adjustment device for an armrest according to claim 2, characterized in that: In a natural state, the blocking bar (15) corresponds to the lock head (7), and the blocking bar (15) and the lock head (7) are against each other. When the switch telescopic rod (5) is pushed into the switch installation groove (18), the lock head (7) is aligned with the unlocking groove (14).

4. The downward pressure adjustment device for an armrest according to claim 2, characterized in that: A travel anti-slip groove (17) for limiting the telescopic travel of the switch telescopic rod (5) is provided on the other side of the switch telescopic rod (5), a limit pin (6) is provided in the travel anti-slip groove (17), and both ends of the limit pin (6) are connected to the connecting seat body (1).

5. The downward pressure adjustment device for an armrest according to claim 1, characterized in that: The telescopic steel ball (19) is composed of a steel ball and a connecting spring. The bottom of the downward pressing rotating head (2) is provided with a mounting circular groove (20) for the steel ball to be telescopic. One end of the connecting spring is connected to the mounting circular groove (20), and the other end is connected to the steel ball.

6. The downward pressure adjustment device for an armrest according to claim 1, characterized in that: The shape and size of the downward pressing stroke groove (11) match the shape and size of the lock head (7).

7. The downward pressure adjustment device for an armrest according to claim 1, characterized in that: The arc angle of rotation of the lock head (7) is the same as the arc angle formed between the first and last pairs of shift grooves (13).

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