Gear type mattress lifting device

Abstract

The utility model discloses a gear type mattress lifting device which is applied to a rotatable mattress body, the mattress body comprises a lying part and a backrest part rotatably connected with the lying part, and at least one guide groove is formed in the back face of the backrest part; the lifting device comprises a rack assembly and a driving mechanism. The rack assembly comprises a rack and a first roller rotatably installed at the upper end of the rack, the first roller abuts against the guide groove, the rack is installed on the bed frame through a guide rail set, and the rack can ascend and descend in the guide rail direction of the guide rail set; the driving mechanism is provided with a turbine set and a locking mechanism capable of preventing the turbine set from working, the turbine set is connected with the rack in a meshed mode, and the rack is driven to ascend and descend through working of the turbine set. According to the mattress lifting device, the turbine structure is adopted to drive the racks to ascend and descend, the structure is simple compared with a traditional speed reducing mechanism, and the corresponding manufacturing cost is reduced. The backrest part can be adjusted at multiple angles through the locking mechanism.

Description

Technical Field

[0001] The utility model relates to a mattress, in particular to a gear-type mattress lifting device. Background Art

[0002] In the prior art, the mattress surface of the mattress is generally a fixed plane structure, so the bed with the mattress cannot realize the backrest function, and sometimes it is not very comfortable to sit on it. In order to solve the above problem, a lifting structure is also provided on the bed body.

[0003] At present, many hospitals use beds that raise and lower the end of the bed frame by shaking the handle, so that the mattress backrest area rises along with the end of the bed frame to achieve a reliable backrest. However, this mechanism is relatively complex, and its structure is a combination of a reduction gear box and a crank, and then a lifting device to achieve the lifting of the end of the bed frame.

[0004] Since the existing bed frame type lifting device has a complicated structure and high cost, it is necessary to improve the traditional lifting device. Utility Model Content

[0005] In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a gear-type mattress lifting device. The purposes of designing the lifting device are: first, to reduce costs; second, the lifting device directly acts on the mattress to simplify the structure.

[0006] In order to solve the above technical problems, the utility model is implemented by the following scheme: the utility model is a gear-type mattress lifting device, the lifting device is applied to a rotatable mattress body, the mattress body includes a lying part and a backrest part rotatably connected to the lying part, and the back of the backrest part is provided with at least one guide groove;

[0007] The lifting device comprises:

[0008] A rack assembly, the rack assembly comprising a rack and a first roller rotatably mounted on the upper end of the rack, the first roller abutting against the guide groove, the rack being mounted on the bed frame through a guide rail set, and the rack being able to rise and fall along the guide rail direction of the guide rail set;

[0009] The driving mechanism comprises a turbine group and a locking mechanism capable of preventing the turbine group from working. The turbine group is meshed and connected with the rack, and the rack is driven to rise and fall through the operation of the turbine group.

[0010] Furthermore, the first roller is a roller with a bearing.

[0011] Furthermore, the turbine group includes a chassis, a gear rotatably fixed to the chassis, a worm gear rotatably installed in the chassis and meshingly connected to the gear, and a curved rocker arm arranged outside the chassis, one end of the worm gear extending out of the chassis and fixed to the curved rocker arm.

[0012] Furthermore, the locking mechanism includes a curved locking rod and a torsion spring. The curved locking rod is an integrated structure, which has an L-shaped portion and a tooth groove arranged at one end of the L-shaped portion and capable of entering the gear to clamp the tip of the gear. After the L-shaped portion and the torsion spring are assembled, they can be rotatably installed on the chassis.

[0013] Furthermore, a limiting structure is provided at the lower end of the rack.

[0014] Furthermore, a plurality of second rollers are installed in the length direction of the rack, and the plurality of second rollers move in contact with the track groove of the guide rail.

[0015] Furthermore, three guide grooves are provided, and the three guide grooves are equidistantly distributed in parallel.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The mattress lifting device of the utility model adopts a turbine structure to drive the rack to lift, and the structure is simpler than the traditional speed reduction mechanism, and the corresponding manufacturing cost is reduced.

[0018] 2. The lifting device of the utility model is provided with a locking mechanism, which can orient the backrest angle and enable the backrest to be adjusted to multiple angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a top view of the mattress body of the present invention.

[0020] Figure 2 This is a structural diagram of the lifting device of the utility model.

[0021] Figure 3 The utility model is a structural diagram of the installation of the lifting device and the backrest of the mattress.

[0022] Figure 4 It is a structural diagram of the locking mechanism of the utility model.

[0023] Figure 5 This is the installation structure diagram of 3 guide grooves, 3 rollers and a gear.

[0024] Markings in the accompanying drawings: backrest portion 1, shaft assembly 2, first roller 3, gear 4, chassis 5, worm gear 6, rack 7, curved rocker 8, locking mechanism 9, guide groove 10, lying portion 11, second roller 71, L-shaped portion 91, tip 92, torsion spring 93. DETAILED DESCRIPTION

[0025] 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, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, thereby making a clearer and more explicit definition of the protection scope of the utility model. Obviously, the embodiments described in the utility model 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 making creative work are within the scope of protection of the utility model.

[0026] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] Embodiment 1, the specific structure of the utility model is as follows:

[0028] Please refer to the attached Figure 1-4 The utility model is a gear-type mattress lifting device, which is applied to a rotatable mattress body, which includes a lying part 11 and a backrest 1 rotatably connected to the lying part 11. Preferably, the lying part 11 and the backrest 1 are connected through a rotating shaft assembly 2 with a bearing. Another mattress body structure is that the lying part 11 and the backrest 1 are separate structures.

[0029] The back of the backrest 1 is provided with at least one guide groove 10, the guide groove 10 is a U-shaped groove, and there are three guide grooves 10, which are equidistantly distributed in parallel. Figure 5 As shown, the three guide grooves 10 are all provided with first rollers 3, and the three first rollers 3 are connected by connecting rods, and the three first rollers 3 can move synchronously. The first rollers 3 are rollers with bearings, and the rollers with bearings rotate more smoothly and are more durable.

[0030] The lifting device comprises a rack assembly and a driving mechanism.

[0031] The rack assembly includes a rack 7 and a first roller 3 rotatably mounted on the upper end of the rack 7. The first roller 3 connected to the rack 7 is an intermediate roller among the three first rollers 3. The intermediate roller abuts against the guide groove 10. The rack 7 is mounted on the bed frame through a guide rail group. The rack 7 can be raised and lowered along the guide rail direction of the guide rail group.

[0032] The driving mechanism comprises a turbine group and a locking mechanism 9 capable of preventing the turbine group from operating. The turbine group is meshedly connected with the rack 7, and the rack 7 is driven to rise and fall through the operation of the turbine group.

[0033] The turbine assembly includes a chassis 5, a gear 4 rotatably fixed to the chassis 5, a worm rod 6 rotatably installed in the chassis 5 and meshingly connected with the gear 4, and a curved rocker 8 provided outside the chassis 5, one end of the worm rod 6 extends out of the chassis 5 and is fixed to the curved rocker 8. The locking mechanism 9 includes a curved locking rod and a torsion spring 93, the curved locking rod is an integrated structure, which has an L-shaped portion 91 and a tip 92 provided at one end of the L-shaped portion 91 and capable of entering the tooth groove of the gear 4 to clamp the gear 4, and the L-shaped portion 91 and the torsion spring 93 are assembled and rotatably installed on the chassis 5.

[0034] Depend on Figure 2 and Figure 3 It can be seen that the clockwise rotation of the curved rocker 8 and the upward push of the L-shaped portion 91 will drive the worm 6 to rotate clockwise. The worm 6 has a screw rod, which is meshed with the gear 4. The screw rod drives the gear 4 to rotate clockwise, and the gear 4 rotates clockwise to drive the rack 7 to move downward. The downward movement of the rack 7 drives the middle roller to move downward. Through the gravity of the backrest 1 itself, the backrest 1 swings downward until it is level with the lying portion 11, completing the downward movement of the backrest 1.

[0035] When the curved rocker 8 is rotated counterclockwise and the L-shaped portion 91 is pushed upward, the backrest 1 rises. When the backrest 1 rises to the required angle, the curved rocker 8 is stopped from rotating, and the L-shaped portion 91 is lowered. The L-shaped portion 91 rebounds through the torsion spring 93, so that the tip 92 is stuck in the tooth groove of the gear 4. The gear 4 is restricted by the tip 92 and cannot rotate. The angle of the backrest 1 is positioned. Figure 3 It can be seen that when the backrest 1 is oriented, the human body's back leans against the backrest 1, the backrest 1 exerts a downward force on the rack 7, the rack 7 exerts a downward force on the right side of the gear 4, and then the left side of the gear 4 has an upward force. At this time, the torsion spring 93 also acts on the L-shaped portion 91 in a clockwise direction, the lower part of the L-shaped portion 91 is tilted to the right, and the force of the gear 4 cannot push the tip 92 out.

[0036] In order to prevent the rack 7 from being separated from the gear, a limiting structure is provided at the lower end of the rack 7.

[0037] In order to make the rack 7 move more smoothly, a plurality of second rollers 71 are installed in the length direction of the rack 7, and the plurality of second rollers 71 move in accordance with the track groove of the guide rail.

[0038] In summary, the mattress lifting device of the utility model adopts a turbine structure to drive the rack to lift, and the structure is simpler than the traditional speed reduction mechanism, and the corresponding manufacturing cost is reduced. The lifting device of the utility model is provided with a locking mechanism, which can orient the backrest angle and enable the backrest to be adjusted at multiple angles.

[0039] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A gear-type mattress lifting device, the lifting device is applied to a rotatable mattress body, the mattress body comprises a lying part (11) and a backrest part (1) rotatably connected to the lying part (11), characterized in that: At least one guide groove (10) is provided on the back side of the backrest (1); The lifting device comprises: A rack assembly, the rack assembly comprising a rack (7) and a first roller (3) rotatably mounted on the upper end of the rack (7), the first roller (3) abutting against the guide groove (10), the rack (7) being mounted on the bed frame via a guide rail group, and the rack (7) being capable of being raised and lowered along the guide rail direction of the guide rail group; The driving mechanism comprises a turbine group and a locking mechanism capable of preventing the turbine group from working. The turbine group is meshingly connected with the rack (7), and the rack (7) is driven to rise and fall through the operation of the turbine group.

2. The gear-type mattress lifting device according to claim 1, characterized in that: The first roller (3) is a roller with a bearing.

3. The gear-type mattress lifting device according to claim 1, characterized in that: The turbine assembly comprises a casing (5), a gear (4) rotatably fixed to the casing (5), a worm gear (6) rotatably mounted in the casing (5) and meshingly connected to the gear (4), and a curved rocker (8) arranged outside the casing (5); one end of the worm gear (6) extends out of the casing (5) and is fixed to the curved rocker (8).

4. The gear-type mattress lifting device according to claim 3, characterized in that: The locking mechanism comprises a curved locking rod and a torsion spring (93); the curved locking rod is an integrated structure, comprising an L-shaped portion (91) and a tip (92) arranged at one end of the L-shaped portion (91) and capable of entering a tooth groove of the gear (4) to clamp the gear (4); the L-shaped portion (91) and the torsion spring (93) are assembled and rotatably mounted on the chassis (5).

5. A gear-type mattress lifting device according to any one of claims 1 to 4, characterized in that: A limiting structure is provided at the lower end of the rack (7).

6. The gear-type mattress lifting device according to claim 1, characterized in that: A plurality of second rollers (71) are installed in the length direction of the rack (7), and the plurality of second rollers (71) move in contact with the track groove of the guide rail.

7. The gear-type mattress lifting device according to claim 1, characterized in that: The guide grooves (10) are provided with three, and the three guide grooves (10) are distributed in parallel and at equal distances.

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