Scooter seat with novel backrest

Abstract

The utility model discloses a scooter seat with a novel chair back, which comprises a seat plate and the chair back arranged at the rear part of the seat plate, and the chair back comprises a rectangular frame and a plurality of backup plates arranged on the rectangular frame along the longitudinal direction; the backup plate can slide on the rectangular frame in the longitudinal direction; the rear side of the backup plate is connected with a driving block; a vertical hole is formed in the driving block; an inner spiral sleeve capable of rotating along the vertical axis is arranged in the vertical hole; a screw rod is coaxially mounted in vertical holes of a plurality of driving blocks, the screw rod is in spiral fit with an inner spiral sleeve arranged in the vertical holes, and a telescopic locking piece is arranged to limit or allow the inner spiral sleeve to rotate along the vertical axis, so that when the screw rod rotates along the vertical axis, the inner spiral sleeve can rotate along the vertical axis. The independent adjustment of the backup plate or the synchronous adjustment of the plurality of backup plates is more convenient, and the use experience of the walking-replacing chair is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mobility scooter seats, in particular to a mobility scooter seat with a novel seat back. Background Art

[0002] With the popularity of mobility scooters, drivers have put forward higher and higher requirements for the comfort of mobility scooters, and the seats of mobility scooters are an important part of the driver's driving experience; in the patent for an adjustable backrest seat with announcement number CN215686050, in order to provide the best sitting experience, multiple clips are slidably installed on the seat backboard, but the clips of the above patent rely on positioning bolts for positioning. When adjusting the height, it is necessary to unscrew the bolts and then slide the clips, which is inconvenient to adjust, especially the inconvenience of adjusting multiple clips synchronously; therefore, in order to achieve efficient individual adjustment of multiple clips while also being efficiently adjusted synchronously to further enhance the sitting experience, the utility model provides a mobility scooter seat with a new type of chair back. Summary of the Invention

[0003] In response to the above-mentioned technical deficiencies, the purpose of the present invention is to provide a mobility scooter seat with a new type of backrest, which is formed by a spiral fit between a screw and an inner spiral sleeve arranged in a vertical hole, and a retractable locking piece is provided to limit or allow the inner spiral sleeve to rotate along the vertical axis, so that when the screw rotates along the vertical axis, efficient adjustment of a single backrest and efficient adjustment of multiple backrests can be achieved, thereby solving the technical problems raised in the background technology.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The utility model provides a mobility scooter seat with a novel chair back, comprising a seat plate and a chair back mounted on the rear portion of the seat plate, characterized in that the chair back comprises a rectangular frame and a plurality of backrest plates arranged longitudinally on the rectangular frame; the backrest plates can slide longitudinally on the rectangular frame; a driving block is connected to the rear side of the backrest plate; a vertical hole is formed on the driving block; an inner spiral sleeve that can rotate along a vertical axis is provided in the vertical hole; a screw is coaxially mounted in the vertical holes of the plurality of driving blocks, and the screw is spirally connected to the plurality of inner spiral sleeves; the screw can rotate in situ along the vertical axis; a locking assembly is mounted on the driving block of each backrest plate, the locking assembly comprising a locking piece that can be retracted in the vertical hole, and a clutch locking structure is formed between the locking piece and the inner spiral sleeve;

[0006] When external force acts on the locking piece on the corresponding driving block, the locking piece extends toward the inner spiral sleeve and locks the inner spiral sleeve. At this time, the screw can rotate in place and drive the corresponding single or multiple support plates to move longitudinally to the corresponding position; when the locking piece retracts and separates from the inner spiral sleeve, the support plate stays at the corresponding position and remains in place.

[0007] Preferably, the locking piece is a sleeve set on the screw, and the sleeve has a plurality of first locking teeth evenly distributed in the circumferential direction on the end surface of the sleeve facing the inner spiral sleeve, and the inner spiral sleeve has a plurality of second locking teeth evenly distributed in the circumferential direction on the end surface of the sleeve facing the sleeve; the sleeve is extended or retracted, so that the first locking teeth and the second locking teeth engage or separate with each other, thereby causing the locking piece to form a clutch lock on the inner spiral sleeve; when the first locking teeth are engaged with the second locking teeth, the locking piece can be extended and limit the circumferential rotation trend of the inner spiral sleeve, converting the circular motion of the screw into a linear motion for lifting and lowering the support plate; when the first locking teeth are separated from the second locking teeth, the inner spiral sleeve will rotate in the same direction as the screw, and the spiral driving force of the screw cannot be transmitted to the support plate. This design is simple, efficient and easy to operate.

[0008] Preferably, sliders are symmetrically provided on both sides of the sleeve; an axial sliding groove is correspondingly opened on the inner wall of the vertical hole; the slider is slidably installed in the axial sliding groove, thereby guiding the sleeve to extend and retract in the vertical hole.

[0009] Preferably, the locking assembly also includes an elastic member acting on the locking member. When an external force acts on the locking member, the elastic member deforms and stores elastic force. When a single or multiple support plates are adjusted into place, the elastic member releases the elastic force and resets the locking member; the operator does not need to manually reset the locking member again, making the operation more convenient.

[0010] Preferably, the locking assembly further comprises an annular sealing plate located close to one side of the locking member and arranged at the opening of the vertical hole; the elastic member is a compression spring arranged between the annular sealing plate and the sleeve.

[0011] Preferably, the sleeve extends longitudinally and passes through the vertical hole, thereby forming a control portion exposed on the chair back and easy to grasp; by pulling the control portion, the corresponding backrest can be controlled to rise or fall or stay at the corresponding position.

[0012] Preferably, an anti-movement component is also included, which includes a magnet A and a magnet B. Magnet A is embedded in the outside of the sleeve, and magnet B is embedded in the inner wall of the vertical hole. When the inner spiral sleeve is locked, magnet A and magnet B are staggered up and down. When the inner spiral sleeve is not locked, magnet A and magnet B are positioned correspondingly and attract each other, so that the inner spiral sleeve remains stable and does not move up and down.

[0013] Preferably, vertical slide grooves are provided on the left and right sides of the rectangular frame; vertical slide bars are correspondingly provided on both sides of the support plate; and the vertical slide bars are slidably installed in the vertical slide grooves.

[0014] Preferably, a sponge pad is packed on the front side of the backrest to improve the comfort of back leaning.

[0015] Preferably, the locking piece is a sleeve set on the screw, and the sleeve has a plurality of pins evenly distributed along the circumference on the end surface of the sleeve facing the inner spiral sleeve, and the inner spiral sleeve has a plurality of holes evenly distributed along the circumference on the end surface of the sleeve facing the sleeve; the sleeve extends or retracts, so that the pin is inserted into or pulled out of the hole, and then the locking piece forms a clutch lock on the inner spiral sleeve; when the pin is inserted into the hole, a plug-in fit is formed, so that the locking piece can extend and limit the circumferential rotation trend of the inner spiral sleeve, and convert the circular motion of the screw into a linear motion for lifting and lowering the support plate; when the pin is separated from the hole, the inner spiral sleeve will rotate in the same direction as the screw, and the spiral driving force of the screw cannot be transmitted to the support plate. This design is simple, efficient and easy to operate.

[0016] Preferably, it also includes a drive motor, the output end of which is connected to the screw to drive the screw to rotate in place along the vertical axis; the drive motor can provide power for the screw, and there is no need to manually control the screw to rotate in place, thereby improving the adjustment efficiency and operating experience.

[0017] The beneficial effects of the present invention are:

[0018] The mobility chair of the present invention is realized by providing an inner spiral sleeve that can rotate along the vertical axis in the driving block on the rear side of multiple backrests on the chair back, and allowing a screw to pass through the inner spiral sleeve at the same time to form a spiral fit, and at the same time providing a locking piece for controlling the rotation or locking of the inner spiral sleeve. When the screw is rotated along the vertical axis, the user can adjust a single or multiple backrests to the corresponding position in the longitudinal direction by controlling the locking piece on a single or multiple backrests according to his or her own usage needs. The backrests that are adjusted into place can remain stable in the corresponding position due to the self-locking characteristics of the spiral fit. The design is simple and ingenious, which makes it more convenient to adjust the backrests individually or adjust multiple backrests synchronously. Compared with the seats in the background technology, there is no need to repeatedly disassemble and assemble the bolts, which improves the user experience of the mobility chair. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention provides a schematic structural diagram of a mobility scooter seat with a novel backrest.

[0020] Figure 2 for Figure 1 main view.

[0021] Figure 3 for Figure 2 Vertical section view of AA in the figure.

[0022] Figure 4 for Figure 3 A magnified view of center.

[0023] Figure 5 This is a schematic diagram of the structure of the back plate and the drive block installed with each other in the present invention.

[0024] Figure 6 for Figure 5 Vertical cross-sectional view of .

[0025] Figure 7 This is a schematic structural diagram of the locking assembly in the present utility model;

[0026] Figure 8 Schematic diagram of the clutch locking structure in Example 2;

[0027] Explanation of the reference numerals: 1-seat plate, 2-rectangular frame, 21-vertical slide groove, 3-back plate, 31-vertical slide bar, 4-drive block, 41-vertical hole, 411-axial slide groove, 412-magnet B, 42-inner spiral sleeve, 421-second locking tooth, 422-socket, 51-screw, 52-connecting sleeve, 61-sleeve, 611-slider, 612-control part, 613-first locking tooth, 614-magnet A, 615-insert column, 62-compression spring, 63-annular sealing plate. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] The present invention has multiple embodiments, and the specific implementation methods are as follows:

[0030] Example 1: Figures 1 to 7As shown, this embodiment provides a mobility scooter seat with a new type of backrest, including a seat plate 1 and a seat back installed at the rear of the seat plate 1, characterized in that the seat back includes a rectangular frame 2 and a plurality of backrest plates 3 arranged longitudinally on the rectangular frame 2; the rectangular frame 2 is a frame-type structural member of the seat back, and vertical slide grooves 21 are provided on the left and right sides of the rectangular frame 2; vertical slide bars 31 are correspondingly provided on both sides of the backrest plate 3; the vertical slide bars 31 are slidably installed in the vertical slide grooves 21, so that the backrest plate 3 can slide longitudinally on the rectangular frame 2; a driving block 4 is connected to the rear side of the backrest plate 3; the driving block 4 can be integrally formed, It can also be installed on the support plate 3; a vertical hole 41 is formed on the driving block 4; an inner spiral sleeve 42 that can rotate along the vertical axis is provided in the vertical hole 41; the inner spiral sleeve 42 remains stable and does not move in the longitudinal direction; a screw 51 is coaxially installed in the vertical holes 41 of multiple driving blocks 4, and the screw 51 forms a spiral connection with the multiple inner spiral sleeves 42; the screw 51 can rotate in situ along the vertical axis; a locking assembly is installed on the driving block 4 of each support plate 3, and the locking assembly includes a locking member that can be retracted in the vertical hole 41, and a clutch locking structure is formed between the locking member and the inner spiral sleeve 42;

[0031] The user can adjust the position of the backrest 3 according to his or her own needs. For example, the user can adjust the position of a single backrest 3 or multiple backrests 3, or adjust the position of all backrests 3 at the same time. The adjustment requires external force. When the external force acts on the locking piece on the corresponding drive block 4, the locking piece extends toward the inner spiral sleeve 42 and locks the inner spiral sleeve 42. At this time, the screw 51 can rotate in place and drive the corresponding single or multiple backrests 3 to move longitudinally to the corresponding position. When the locking piece retracts and separates from the inner spiral sleeve 42, the backrest 3 stays at the corresponding position and remains in place.

[0032] Furthermore, in order to achieve the clutch locking effect of the locking member on the inner spiral sleeve 42, the locking member in this embodiment is a sleeve 61 set on the screw 51, and the end surface of the sleeve 61 facing the inner spiral sleeve 42 is uniformly distributed along the circumference with a plurality of first locking teeth 613, and the end surface of the inner spiral sleeve 42 facing the sleeve 61 is uniformly distributed along the circumference with a plurality of second locking teeth 421; the sleeve 61 is extended or retracted, so that the first locking teeth 613 and the second locking teeth 421 are engaged or disengaged with each other, so that the locking member is locked against the inner spiral sleeve 42. A clutch lock is formed; specifically, when the first locking tooth 613 is engaged with the second locking tooth 421, the locking piece can extend and limit the circumferential rotation trend of the inner spiral sleeve 42, converting the circular motion of the screw 51 into a linear motion that causes the support plate 3 to rise and fall; when the first locking tooth 613 is separated from the second locking tooth 421, the inner spiral sleeve 42 will rotate in the same direction as the screw 51, and the spiral driving force of the screw 51 cannot be transmitted to the support plate 3. At this time, the support plate 3 remains in place. This design is simple, efficient, and easy to operate.

[0033] Furthermore, in order to facilitate the extension and retraction of the sleeve 61 in the vertical hole 41, sliders 611 are symmetrically provided on both sides of the sleeve 61; an axial slide groove 411 is correspondingly opened on the inner wall of the vertical hole 41; the slider 611 is slidably installed in the axial slide groove 411, thereby guiding the extension and retraction of the sleeve 61 in the vertical hole 41.

[0034] Furthermore, considering that when the back plate 3 is raised and lowered to the corresponding position, the locking member needs to be retracted and reset to keep the back plate 3 in the corresponding position, the locking assembly also includes an elastic member acting on the locking member. When an external force acts on the locking member, the elastic member deforms and stores elastic force. When a single or multiple back plates 3 are adjusted into place, the elastic member releases the elastic force and resets the locking member; specifically, the locking assembly also includes an annular sealing plate 63 located near one side of the locking member and arranged at the opening of the vertical hole 41; the annular sealing plate 63 is arranged at one end of the opening of the vertical hole 41, which can form a certain blocking effect on the locking member; the elastic member is a compression spring 62 arranged between the annular sealing plate 63 and the sleeve 61; the outer wall of the sleeve 61 has an annular protrusion, wherein one end of the compression spring 62 rests on the annular sealing plate 63, and the other end rests on the protrusion. The compression spring 62 provides a reset elastic force, which is equivalent to that after the back plate 3 is adjusted into place, the operator does not need to manually reset the locking member again, and the operation is more convenient.

[0035] Furthermore, to facilitate user operation, the sleeve 61 extends longitudinally and passes through the vertical hole 41, and the control part 612 passes through the inner hole of the annular sealing plate 63, thereby forming a control part 612 exposed on the chair back and easy to grasp; during operation, by pulling the control part 612, the corresponding backrest 3 can be controlled to rise and fall or stay in the corresponding position.

[0036] Furthermore, when the locking piece is separated from the inner spiral sleeve 42, the locking piece needs to remain stably separated from the inner spiral sleeve 42. Therefore, the seat also includes an anti-movement component, which includes a magnet A614 and a magnet B412. The magnet A614 is embedded in the outside of the sleeve 61, and the magnet B412 is embedded in the inner wall of the vertical hole 41. When the inner spiral sleeve 42 is locked, the magnet A614 and the magnet B412 are staggered up and down. When the inner spiral sleeve 42 is not locked, the magnet A614 and the magnet B412 are positioned correspondingly and attract each other, so that the inner spiral sleeve 42 remains stable and does not move up and down.

[0037] Furthermore, the front side of the backrest is packed with a sponge pad, which can effectively improve the comfort of leaning back.

[0038] Furthermore, in order to enable the screw 51 to continuously rotate along the vertical axis when adjusting the height position of the corresponding backrest 3, the seat also includes a drive motor (not shown), the output end of the drive motor is connected to the screw 51 to drive the screw 51 to rotate in place along the vertical axis; the drive motor can provide power for the screw 51, and there is no need to manually control the screw 51 to rotate in place, thereby improving the adjustment efficiency and operating experience.

[0039] Furthermore, connecting sleeves 52 are provided at the upper and lower ends of the rectangular frame 2. The upper and lower ends of the screw rod 51 pass through all the driving blocks 4 and are respectively rotated along the vertical axis to be connected in the two connecting sleeves 52. This design not only makes the connection of the screw rod 51 on the chair back more stable, but also enables the screw rod 51 to have a certain strengthening effect on the rectangular frame 2.

[0040] Example 2: This example is different from the above examples in that Figure 8 As shown, the clutch locking structure in this embodiment adopts a plug-in structure. Specifically, the inner spiral sleeve 42 has a plurality of insertion holes 422 evenly distributed along the circumferential direction on the end face facing the sleeve 61; the sleeve 61 extends or retracts, so that the pin 615 is inserted into or pulled out of the insertion hole 422, and then the locking member forms a clutch lock on the inner spiral sleeve 42; when the pin 615 is inserted into the insertion hole 422, a plug-in fit is formed, so that the locking member can extend and limit the circumferential rotation trend of the inner spiral sleeve 42, and convert the circular motion of the screw 51 into a linear motion for lifting and lowering the support plate 3; when the pin 615 is separated from the insertion hole 422, the inner spiral sleeve 42 will rotate in the same direction as the screw 51, and the spiral driving force of the screw 51 cannot be transmitted to the support plate 3. This design is simple, efficient, and easy to operate, and can achieve the same clutch locking effect as in the above embodiment.

[0041] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A mobility scooter seat with a novel backrest, comprising a seat plate (1) and a backrest mounted on the rear portion of the seat plate (1), characterized in that: The chair back comprises a rectangular frame (2) and a plurality of backrests (3) arranged longitudinally on the rectangular frame (2); the backrests (3) can slide longitudinally on the rectangular frame (2); a driving block (4) is connected to the rear side of the backrest (3); a vertical hole (41) is provided on the driving block (4); an inner spiral sleeve (42) that can rotate along a vertical axis is provided in the vertical hole (41); a screw (51) is coaxially installed in the vertical holes (41) of the plurality of driving blocks (3), and the screw (51) forms a spiral connection with the plurality of inner spiral sleeves (42); the screw (51) can rotate in situ along the vertical axis; a locking assembly is installed on the driving block (4) of each backrest (3), and the locking assembly includes a locking member that can be telescoped in the vertical hole (41), and a clutch locking structure is formed between the locking member and the inner spiral sleeve (42); When an external force acts on the locking piece on the corresponding driving block (4), the locking piece extends toward the inner spiral sleeve (42) and locks the inner spiral sleeve (42). At this time, the screw (51) can rotate in situ and drive the corresponding single or multiple support plates (3) to move longitudinally to the corresponding position; when the locking piece retracts and separates from the inner spiral sleeve (42), the support plate (3) stays at the corresponding position and remains in place.

2. The mobility scooter seat with a novel seat back according to claim 1, characterized in that: The locking member is a sleeve (61) mounted on the screw (51), wherein a plurality of first locking teeth (613) are uniformly distributed along the circumference on the end surface of the sleeve (61) facing the inner spiral sleeve (42), and a plurality of second locking teeth (421) are uniformly distributed along the circumference on the end surface of the inner spiral sleeve (42) facing the sleeve (61); when the sleeve (61) is extended or retracted, the first locking teeth (613) and the second locking teeth (421) are engaged with or separated from each other, thereby causing the locking member to form a clutch lock on the inner spiral sleeve (42).

3. The mobility scooter seat with a novel seat back according to claim 2, characterized in that: Slide blocks (611) are symmetrically provided on both sides of the sleeve (61); an axial sliding groove (411) is correspondingly provided on the inner wall of the vertical hole (41); the slide blocks (611) are slidably installed in the axial sliding groove (411), thereby guiding the sleeve (61) to extend and retract in the vertical hole (41).

4. The mobility scooter seat with a novel seat back according to claim 2, characterized in that: The locking assembly also includes an elastic member acting on the locking member. When an external force acts on the locking member, the elastic member deforms and stores elastic force. When the single or multiple support plates (3) are adjusted into place, the elastic member releases the elastic force and resets the locking member.

5. The mobility scooter seat with a novel seat back according to claim 2, characterized in that: The locking assembly further comprises an annular sealing plate (63) located near one side of the locking member and arranged at the opening of the vertical hole (41); the elastic member is a compression spring (62) arranged between the annular sealing plate (63) and the sleeve (61).

6. The mobility scooter seat with a novel seat back according to claim 2, characterized in that: The sleeve (61) extends longitudinally and passes through the vertical hole (41), thereby forming a control portion (612) exposed on the chair back and easy to grasp.

7. The mobility scooter seat with a novel seat back according to claim 2, characterized in that: The invention also includes an anti-movement component, which includes a magnet A (614) and a magnet B (412). The magnet A (614) is embedded in the outer side of the sleeve (61), and the magnet B (412) is embedded in the inner wall of the vertical hole (41). When the inner spiral sleeve (42) is locked, the magnet A (614) and the magnet B (412) are staggered up and down. When the inner spiral sleeve (42) is not locked, the magnet A (614) and the magnet B (412) are positioned in correspondence and attract each other, so that the inner spiral sleeve (42) remains stable and does not move up and down.

8. The mobility scooter seat with a novel seat back according to claim 1, characterized in that: The rectangular frame (2) is provided with vertical slide grooves (21) on the left and right sides; vertical slide bars (31) are correspondingly provided on both sides of the support plate (3); and the vertical slide bars (31) are slidably installed in the vertical slide grooves (21).

9. The mobility scooter seat with a novel seat back according to claim 1, characterized in that: The front side of the backrest (3) is packed with a sponge pad.

10. The mobility scooter seat with a novel seat back according to claim 1, characterized in that: The locking member is a sleeve (61) mounted on the screw (51), and a plurality of plug posts (615) are evenly distributed along the circumference on the end surface of the sleeve (61) facing the inner spiral sleeve (42), and a plurality of insertion holes (422) are evenly distributed along the circumference on the end surface of the inner spiral sleeve (42) facing the sleeve (61); when the sleeve (61) is extended or retracted, the plug posts (615) are inserted into or pulled out of the insertion holes (422), thereby causing the locking member to form a clutch lock on the inner spiral sleeve (42).

11. The mobility scooter seat with a novel seat back according to claim 1, characterized in that: It also includes a driving motor, the output end of which is connected to the screw rod (51) to drive the screw rod (51) to rotate in situ along the vertical axis.

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