Multidirectionally adjustable armrest

Abstract

The multidirectionally adjustable armrest according to the invention primarily comprises a base plate 1 mounted on the upper surface of the seat armrest 10, a backrest body 2 resting on the upper surface of the base plate 1, and a sliding control assembly 3 housed in the backrest body 2. By pressing the push-button control element 31 of the sliding control assembly 3, the backrest body 2 can be moved forwards, backwards, left, and right relative to the seat armrest 10, as well as rotated and pivoted, so that the user can conveniently adjust the backrest body 2 to a position suitable for their arm (elbow). When the backrest body 2 is pivoted and rotated, the clamping teeth 339 of the toothed section 332 of the sliding control assembly 3 and the clamping element 338 of the main base 331 of the sliding control assembly 3 are pressed against each other to prevent the transverse sliding shaft assembly 33 of the sliding control assembly 3 from making noise during rotation.

Description

[0001] The present invention relates to the field of seat armrests and in particular a multidirectionally adjustable armrest by which the position of the backrest can be adjusted according to the arm of the user.

[0002] Most existing seat armrests can only be adjusted to forward, backward, left, and right positions. However, the position of the arm (elbow) varies for many users depending on the type of work and sitting posture. Therefore, the functionality of an armrest that only allows adjustment to forward, backward, left, and right positions is too limited and cannot meet users' needs. Developing a more user-friendly armrest with more adjustment options is currently a key area of ​​research.

[0003] DE 10 2020 207 763 A1 discloses an armrest device for a vehicle seat, comprising an armrest that is movably arranged on an armrest support and has an armrest pad that is at least substantially horizontally oriented and arranged on an armrest support, an adjustment device by which the armrest can be adjusted in height on the armrest support, and a locking device by which the armrest can be locked in different height positions on the armrest support. By sliding the armrest pad towards the backrest of the vehicle seat, the locking device is released, so that height adjustment of the armrest is possible.

[0004] DE 20 2006 009 116 U1 discloses an armrest that allows longitudinal and lateral displacement as well as angular adjustment. The armrest is mounted at the top of a support and comprises an armrest surface, a base plate, a connecting piece, a movable piece, a square piece, a disc, several positioning rings, several spring elements adapted to the positioning rings, a locking pin, and a spring element adapted to the locking pin. Some of the spring elements press some of the positioning rings into one of several convex grooves of a positioning assembly in the base plate to allow indexed longitudinal displacement. Others press other parts of the positioning rings into one of several convex grooves in the square piece to allow indexed lateral displacement.The spring element presses the locking pin into one of several positioning grooves to enable a ratcheted angle adjustment.

[0005] The object of the present invention is to provide a different multidirectionally adjustable armrest that can be adjusted according to the type of work, arm length and sitting position of the user, thus increasing practicality.

[0006] This task is fulfilled by the doctrine of the independent claim.

[0007] Preferred embodiments of the invention are the subject of the dependent claims. Fig. Figure 1 shows a perspective view of the backrest body; Fig. Figure 2 shows a perspective view in which the backrest body is attached to the seat armrest; Fig. Figure 3 shows a perspective exploded view of the backrest body, the base plate and the seat armrest; Fig. Figure 4 shows a perspective exploded view of the backrest body and the sliding control assembly; Fig. Figure 5 shows a perspective exploded view of the sliding control assembly; Fig. Figure 6 shows a perspective exploded view of the sliding control assembly from a different perspective; Fig. Figure 7 shows a perspective view in which the sliding control arrangement is located in the backrest body before the push control part is pressed; Fig. Figure 8 shows a perspective view in which the engagement pieces of the longitudinal slide engage with the corresponding engagement slots of the backrest body; Fig. Figure 9 shows a perspective view in which the backrest body can be moved forwards and backwards relative to the seat armrest; Fig. Figure 10 shows a perspective view in which the backrest body can be moved to the left and right relative to the seat armrest; Fig. Figure 11 shows a perspective view in which the backrest body can be rotated relative to the seat armrest; Fig. Figure 12 shows a perspective view in which the clamping teeth of the toothed piece and the clamping piece of the main base are pressed against each other.

[0008] The present invention relates to a multidirectionally adjustable armrest, comprising: a base plate 1 which is fixed to the upper end of a seat armrest 10, wherein a locking bolt 11 protrudes from the upper surface of the base plate 1; a backrest body 2 which rests against the upper surface of the base plate 1 and has a lower shell part 24 and a soft backrest part 25, wherein a sliding hole 22 and a through hole 23 are each provided at the bottom and on one side of the lower shell part 24, the inner wall of the lower shell part 24 located near the through hole 23 is provided with several engagement slots 26, a slot 251 is recessed on one side of the soft backrest part 25 to form a receiving space 21 for the shell part 24, and the locking bolt 11 of the base plate 1 is inserted through the sliding hole 22 into the receiving space 21; a sliding control arrangement 3, which is housed in the receiving space 21 and drives the backrest body 2 such that it uses the locking bolt 11 as an axis and is movable relative to the seat armrest 10, wherein the sliding control arrangement 3 comprises a push control part 31, a longitudinal slide 32, a transverse sliding shaft group 33, two toothed limit plates 34 and a base plate 35; wherein the lower surface of the longitudinal slide 32 is arranged in the receiving space 21 of the backrest body 2 and is provided with a sliding block 321 and a longitudinal hole 322 corresponding to the sliding hole 22 and the locking bolt 11 of the base plate 1, the upper surface of the longitudinal slide 32 is provided with several engagement brackets 323 and a retaining wall 324 located on the outside of the several engagement brackets 323, the longitudinal slide 32 further comprising a first long side section 325 and a second long side section 326, a bearing bar 3270 serving for bearing the return element 327 is arranged on the inside of the first long side section 325 and several positioning holes 3280 serving for arranging several engagement pieces 328 are provided at two ends of the outer wall of the second long side section 326, wherein, when the longitudinal slide 32 is attached to the receiving space 21 of the backrest body 2,the engagement pieces 328 of the longitudinal slide 32 and the engagement slots 26 on the inner wall of the receiving chamber 21 are aligned with each other.

[0009] Furthermore, the surface of the base plate 35 has a transverse hole 351 that is continuously connected to the longitudinal hole 322 of the longitudinal slide 32 and the sliding hole 22 of the lower shell part 24, with each of the two longitudinal sides of the base plate 35 having contact holes 352 and detent blocks 353. When the base plate 35 is engaged with the engagement brackets 323 of the longitudinal slide 32, the two ends of a respective return element 327 are located between the corresponding contact hole 352 of the base plate 35 and the corresponding contact bar 3270 of the longitudinal slide 32. The return elements 327 give the base plate 35 a return effect (as in Fig. 7 shown).

[0010] Furthermore, one end of the push control part 31 is provided with a detent recess 313, wherein the detent recess 313 of the push control part 31 engages with the detent block 353 of the base plate 35 and the other end of the push control part 31 protrudes from the through hole 23 of the backrest body 2.

[0011] Furthermore, the two toothed limit plates 34 are each located on two sides of the longitudinal hole 322 of the longitudinal slide 32 and are clamped between the base plate 35 and the longitudinal slide 32, wherein the side of each toothed limit plate 34 corresponding to the base plate 35 is provided with a projecting block 341 and the base plate 35 is provided with two tracks 356 corresponding to the two projecting blocks 341 of the toothed limit plates 34, so that the two toothed limit plates 34 can be moved in the corresponding tracks 356 by the corresponding projecting blocks 341 and can approach or move away from each other.The opposite sides of the two toothed limit plates 34 are each provided with a toothed section 342, wherein the side facing away from a respective toothed section 342 is provided with an elastic part 343 and an end of a respective elastic part 343 bears elastically against the edging wall 324 of the longitudinal slide 32.

[0012] Furthermore, the transverse sliding shaft assembly 33 is located in the transverse hole 351 of the base plate 35 and is mounted on the locking bolt 11 of the base plate 1 and housed in the space between the two toothed limit plates 34. The transverse sliding shaft assembly 33 has a main base 331 and a toothed section 332, wherein one side of the main base 331 is provided with a toothing 334 engaging with the toothed section 342 of any toothed limit plate 34, the upper surface of the main base 331 is provided with an arc-shaped recess 333 and a clamping recess 3380 continuously connected to the arc-shaped recess 333 and receiving the clamping piece 338, and one end of the clamping piece 338 projects towards the mounting hole 337 located in the center of the main base 331.The toothed piece 332 is arranged in the arc recess 333 of the main base 331 and has a shaft hole 335 aligned with the locking bolt 11 of the base plate 1, wherein the toothed piece 332 is pivotable relative to the main base 331, one side of the toothed piece 332 is provided with a ring toothing 336 engaging with the toothed section 342 of the other toothed limiting plate 34, and the other side of the toothed piece 332 is provided with a clamping toothing 339 aligned with the clamping piece 338 of the main base 331.

[0013] In this way, pressing the push control part 31 releases the engagement between the two toothed limit plates 34 and the transverse sliding shaft group 33, so that through the interaction of the longitudinal hole 322 of the longitudinal slide 32 with the transverse sliding shaft group 33, the interaction of the sliding block 321 of the longitudinal slide 32 with the sliding hole 22 and the interaction of the main base 331 with the toothed piece 332 of the backrest body 2, the seat armrest 10 is used as an axis to adjust the forward and backward, left and right displacement and the rotation of the backrest body 2.

[0014] For further clarification, it should be noted that the seat armrest 10 is used as an axis to define an X-axis 20, a Y-axis 30, and a Z-axis 40. The seat armrest 10 is located on the Z-axis 40, and the backrest body 2 is on the horizontal plane where the X-axis 20 and the Y-axis 30 lie. To adjust the position of the backrest body 2 relative to the armrest 10, the push-button control element 31 is pressed. This causes the push-button control element 31 to move the base plate 35 towards the receiving space 21 of the backrest body 2, allowing the projecting blocks 341 of the toothed limit plates 34 to move left and right along the corresponding tracks 356 of the base plate 35. After the engagement between the toothed section 342 of a respective toothed limiting plate 34 and the ring toothing 336 of the toothed piece 332 orThe toothing 334 of the main base 331 has been removed, the backrest body 2 is movable forwards and backwards along the direction of the Y-axis 30 by the combination of the transverse sliding shaft group 33 with the locking bolt 11 of the base plate 1 (as in . Fig. 9 shown). By moving the backrest body 2 forwards and backwards, the sliding block 321 located on the underside of the longitudinal slide 32 can be moved within the sliding hole 22 of the lower shell part 24 of the backrest body 2.

[0015] In other words, if the left and right position or swivel direction of the backrest body 2 is to be adjusted, the push-button control part 31 must also be pressed to disengage the engagement between the toothed limiting plate 34 and the toothed piece 332 or the main base 331, and then adjust the backrest body 2 so that it moves left and right along the direction of the X-axis 20 (as shown in Fig. 10). It is worth noting that when the backrest body 2 is moved to the left and right, the several engagement slots 26 provided on the inner wall of the lower shell part 24 engage with the corresponding engagement pieces 328 of the longitudinal slide 32, thereby improving stability during left and right movement (as shown in Fig. 8 shown).

[0016] Because the main base 331 is rotatable relative to the toothed piece 332, the backrest body 2 can be pivoted and rotated between the X-axis 20 and the Y-axis 30 (as shown in Fig. 11), to achieve the effect of adjusting the pivot direction of the backrest body 2. When the backrest body 2 pivots and rotates, the tightness between the main base 331 and the toothed piece 332 is improved by the clamping structure between the clamping teeth 339 of the toothed piece 332 and the clamping piece 338 of the main base 331 (as shown in Fig.12 shown), to prevent the transverse sliding shaft group 33 from making noise during rotation.

[0017] After the seat armrest 10 has been moved into the appropriate position or pivot direction by adjustment, the push control element 31 is released to elastically release the return element 326 located between the contact hole 352 of the base plate 35 and the contact rod 3270 of the longitudinal slide 32, and to push the base plate 35 back into its original position. Simultaneously, the two toothed limit plates 34 are reset to their original positions by the corresponding elastic elements 343, thereby restoring the engagement between the toothed section 342 of each toothed limit plate 34 and the ring toothing 336 of the toothed piece 332 or the toothing 334 of the main base 331, respectively, to limit the backrest body 2 in the set position, thus enabling the user to position their arm on the backrest body 2 in the most comfortable way.

[0018] As mentioned above, the main technical feature of the multidirectionally adjustable armrest according to the invention is to control the displacement of the base plate 35 by pressing the push control element 31, thereby disengaging the two toothed limit plates 34 and the transverse sliding shaft assembly 33 and adjusting the position of the backrest body 2. When the backrest body 2 is moved along the Y-axis 30, the position of the sliding block 321 located on the underside of the longitudinal slide 32 within the sliding hole 22 can be changed by the movement of the backrest body 2. When the backrest body 2 is moved along the X-axis 20, the position of the transverse sliding shaft assembly 33 within the transverse hole 351 can be changed by the combination of the transverse sliding shaft assembly 33 with the locking bolt 11.When the backrest body 2 is pivoted and rotated along the X-axis 20 and the Y-axis 30, the main base 331 can be rotated relative to the toothed piece 332 by the engagement of the toothed piece 332 of the transverse sliding shaft group 33 with the locking bolt 11, whereby the position of the main base 331 relative to the toothed piece 332 can be changed when pivoting and rotating the backrest body 2.

[0019] After the user has adjusted the position of the backrest body 2, they can release the push-button control 31, causing the toothed section 342 of the respective toothed limiting plate 34 to engage with the toothing 334 of the main base 331 or the ring toothing 336 of the toothed piece 332, thus stably limiting the backrest body 2 to the set position without any wobble. In this way, the user can adjust the backrest body 2 to the most suitable position using the above adjustment method, depending on arm length, arm movements, sitting posture, etc., in order to achieve optimal comfort. Reference symbol list 1 Base plate 10 Seat armrest 11 locking bolts 2 backrest bodies 21 Recording Room 22 sliding holes 23 Through hole 24 lower shell part 25 soft backrest section 26 access slots 3 Sliding control arrangement 31 Push control part 313 Latch recess 32 longitudinal slides 321 Sliding block 322 Longitudinal hole 323 Access bracket 324 Enclosing wall 325 first long side section 326 second long page section 327 Reset element 3270 Investment staff 328 Intervention piece 3280 Positioning hole 33 Transverse sliding wave group 331 Main base 332 toothed piece 333 Arch recess 334 Gear teeth 335 wave hole 336 Ring teeth 337 Mounting hole 338 Clamping piece 3380 Clamping recess 339 Clamping gear 34 toothed boundary plate 341 preceding block 342 Gear section 343 elastic part 35 Base plate 351 transverse hole 352 Plant hole 353 Rastblock 356 train 20 X-axis 30 Y-axis 40 Z-axis

Claims

[1] Multidirectional adjustable armrest, comprising: a base plate (1) which is fixed to the upper end of a seat armrest (10), wherein a locking bolt (11) protrudes from the upper surface of the base plate (1); a backrest body (2) which has a receiving space (21) and rests against the upper surface of the base plate (1), wherein a sliding hole (22) and a through hole (23) are provided at the bottom and on one side of the backrest body (2) respectively, and the sliding hole (22) serves to insert the locking bolt (11) of the base plate (1); a sliding control arrangement (3) which is housed in the receiving space (21) of the backrest body (2) and comprises a push control part (31), a longitudinal slide (32), a transverse sliding shaft group (33), two toothed limiting plates (34) and a base plate (35); wherein the longitudinal slide (32) rests against the base of the backrest body (2) and is provided with a protruding sliding block (321) aligned with the sliding hole (22) and the sliding block (321) is provided with a longitudinal hole (322) aligned with the locking bolt (11); wherein the surface of the base plate (35) is provided with a transverse hole (351) continuously connected to the longitudinal hole (322) of the longitudinal slide (32), one end of the base plate (35) engages with the push control part (31) and the other end of the push control part (31) protrudes from the through hole (23) of the backrest body (2); wherein the two toothed limit plates (34) are clamped between the base plate (35) and the longitudinal slide (32) and each is provided with a projecting block (341), the base plate (35) corresponding to the two projecting blocks (341) of the toothed limit plates (34) is provided with two tracks (356), the opposite sides of the two toothed limit plates (34) are each provided with a toothed section (342), the side facing away from each toothed section (342) is provided with an elastic part (343) and each elastic part (343) bears elastically against the inner wall of the longitudinal slide (32); wherein the transverse sliding shaft assembly (33) is located in the transverse hole (351) of the base plate (35) and is mounted on the locking bolt (11) of the base plate (1) and is housed in the space between the two toothed limit plates (34), the transverse sliding shaft assembly (33) has a main base (331) and a toothed piece (332), one side of the main base (331) engages with any toothed limit plate (34), the upper surface of the main base (331) is provided with an arc recess (333) and a clamping recess (3380) continuously connected to the arc recess (333) and receiving the clamping piece (338), the toothed piece (332) is arranged in the arc recess (333) of the main base (331) and a locking bolt (11) of the base plate (1) is aligned with the locking bolt (11) of the base plate (1). has wave hole (335),one side of the toothed piece (332) engages with the other toothed limiting plate (34) and the other side of the toothed piece (332) is provided with a clamping toothing (339) matched to the clamping piece (338) of the main base (331), wherein, when pivoting and rotating the backrest body (2), the tightness between the main base (331) and the toothed piece (332) is improved by the clamping structure between the clamping toothing (339) of the toothed piece (332) and the clamping piece (338) of the main base (331) in order to prevent the transverse sliding shaft assembly (33) from making noise during rotation; wherein the engagement between the two toothed limit plates (34) and the transverse sliding shaft group (33) is released by pressing the push control part (31), so that through the interaction of the longitudinal hole (322) of the longitudinal slide (32) with the transverse sliding shaft group (33), the interaction of the sliding block (321) of the longitudinal slide (32) with the sliding hole (22) and the interaction of the main base (331) with the toothed piece (332) of the backrest body (2) the seat armrest (10) uses the seat armrest (10) as an axis to adjust the forward and backward, left and right displacement and the rotation of the backrest body. [2] Multidirectionally adjustable armrest according to claim 1, wherein the longitudinal slide (32) has a first long side section (325), wherein a contact rod (3270) for bearing the return element (327) is arranged on the inside of the first long side section (325) and a contact hole (352) is provided in the position corresponding to the return element (327) on one side of the base plate (35), wherein, when the longitudinal slide (32) is engaged with the base plate (35), the other end of the return element (327) of the longitudinal slide (32) is located in the contact hole (352) of the base plate (35) and the base plate (35) is reset by the return element (327). [3] Multidirectionally adjustable armrest according to claim 1 or 2, wherein the longitudinal slide (32) further comprises a second long side section (326), wherein several positioning holes (3280) for arranging several engagement pieces (328) are provided on the outer wall of the second long side section (326) and several engagement slots (26) are provided on the inner wall of the backrest body (2) located near the through-hole (23), wherein, when the longitudinal slide (32) rests against the receiving space (21) of the backrest body (2), the engagement pieces (328) of the longitudinal slide (32) and the engagement slots (26) on the inner wall of the receiving space (21) are aligned with each other, so that the stability of the left and right movement of the backrest body (2) can be improved by the engagement of the engagement slots (26) with the corresponding engagement pieces (328) of the longitudinal slide (32). [4] Multidirectionally adjustable armrest according to one of the preceding claims, wherein the backrest body (2) further comprises a lower shell part (24) and a soft backrest part (25), wherein a sliding hole (22) and a through hole (23) are each provided on the bottom and on one side of the lower shell part (24), the inner wall of the lower shell part (24) located near the through hole (23) is provided with several engagement slots (26), a slot (251) is recessed on one side of the soft backrest part (25) to form a receiving space (21) for the shell part (24), and the locking bolt (11) of the base plate 1 is inserted through the sliding hole (22) into the receiving space (21). [5] Multidirectional adjustable armrest according to one of the preceding claims, wherein a locking block (353) is arranged on one side of the base plate (35), wherein, corresponding to the locking block (353), a locking recess (313) is provided at one end of the push control part (31), the locking recess (313) of the push control part (31) engages with the locking block (353) of the base plate (35), and the base plate (36) is moved synchronously by pressing the push control part (31). [6] Multidirectionally adjustable armrest according to one of the preceding claims, wherein one side of the main base (331) is provided with a toothing (334) engaging with the toothed section (342) of any toothed boundary plate (34), wherein the toothed piece (332) is arranged in the arc recess (333) of the main base (331) and has a shaft hole (335) aligned with the locking bolt (11) of the base plate (1) and one side of the toothed piece (332) is provided with a ring toothing (336) engaging with the toothed section (342) of the other toothed boundary plate (34).

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