Door opener and closer with buffer device

Abstract

The present invention discloses a door body opener and closer with a buffer device, comprising a housing, a door pushing device, a driving device and a buffer device arranged in the housing, wherein the door pushing device is connected to the driving device through a rotating swing member and pushes the door body to rotate; the buffer device comprises a buffer block, a buffer damper and a buffer fork, one end of the buffer damper is fixed to the housing, and the other end cooperates with the buffer block, the buffer block is arranged in a buffer slide groove of the housing to slide back and forth, and the rotating swing member pushes the buffer fork to make the buffer fork move the buffer block. The buffer block in the present invention adopts a sliding setting, and the housing is directly used to clamp the buffer block in the buffer slide groove, which has a simple structure and is easy to install, effectively reducing the assembly difficulty and manufacturing cost.

Description

Technical Field

[0001] The invention belongs to the field of furniture hardware accessories, and in particular relates to a door opener and closer with a buffer device. Background Art

[0002] Chinese patent document CN10976376 A discloses a door opener, including a shell composed of an upper cover plate and a lower cover plate. The key is that there is a pushing device in the shell for pushing the door to rotate, one end of a driving device with a spring drives the pushing device to rotate through a rotating pendulum, and a locking release device cooperating with the driving device is provided at the other end of the driving device.

[0003] Although this solution makes it easier to open and close the swing door, and the damper cooperates with the rotary push rod to avoid excessive door closing noise and accidental triggering of the lock release device, the rotary push rod has high installation precision requirements for the rotating shaft, which is troublesome to assemble and has high manufacturing costs. In addition, the rotary push rod is exposed for a long time when the door is open, which poses a risk of damage. Therefore, it is necessary to optimize the door opener and closer. Summary of the invention

[0004] The technical problem solved by the present invention is to provide a door body opener and closer with a buffer device, which can not only avoid excessive door closing noise, but also has a simple structure and is easy to install.

[0005] The above technical problem is solved by the following technical solution: A door body opener and closer with a buffer device comprises a shell, in which a door pushing device, a driving device and a buffer device are arranged, wherein:

[0006] The door-pushing device is connected to the driving device through a rotating swing member and pushes the door body to rotate;

[0007] The buffer device includes a buffer block, a buffer damper and a buffer fork. One end of the buffer damper is fixed to the shell, and the other end cooperates with the buffer block. The buffer block is arranged in the buffer slide groove of the shell to slide back and forth. The rotating pendulum pushes the buffer fork to make the buffer fork move the buffer block.

[0008] The beneficial effects produced by the present invention compared with the background technology are as follows: the buffer block adopts a sliding setting, and the buffer block is directly clamped in the buffer slide groove by the shell. It has a simple structure and is easy to install, which effectively reduces the assembly difficulty and manufacturing cost. In addition, the buffer block is moved by a buffer fork, so that the buffer block can be hidden in the shell when the door is open, thereby effectively protecting the buffer block.

[0009] In one embodiment, the rotating pendulum member includes a first rotating pendulum member and a second rotating pendulum member arranged side by side, and the buffer fork is located between the first rotating pendulum member and the second rotating pendulum member. The three are coaxially arranged through an axle pin, and the first rotating pendulum member or the second rotating pendulum member pushes the buffer fork.

[0010] In one embodiment, the first rotating pendulum member and the second rotating pendulum member are respectively composed of a bearing seat, a bearing and a support seat, one end of the bearing seat, the support seat and the buffer fork are connected to the housing shaft through an axle pin, and the other two ends of the bearing seat are respectively connected to the bearings.

[0011] In one of the embodiments, a bearing seat groove is provided on the surface of the bearing seat, and a support seat boss is provided on the surface of the support seat. The bearing seat groove and the support seat boss are embedded and positioned, and the two support seats are tightly attached to each other and slidably matched.

[0012] In one of the embodiments, a fork gap is left between the two support seats, the buffer fork is installed in the fork gap, and the first rotating pendulum or the second rotating pendulum pushes the buffer fork through the bearing.

[0013] In one of the embodiments, the buffer block is provided with a sliding limit plate, a balancing guide plate and a fork limit plate. The shell clamps the buffer block in the buffer slide groove. The buffer slide groove is provided with a slide groove limit plate, a guide hole and a fork hole. The sliding limit plate cooperates with the slide groove limit plate, the balancing guide plate is clamped in the guide hole, and the buffer fork passes through the fork hole and cooperates with the fork limit plate.

[0014] In one embodiment, the buffer block is an arc-shaped structure, the balancing guide plate is located on the inner circle side of the arc, the sliding limit plate is located at the top of the arc, and the fork limit plate is located in the middle and end of the arc; the buffer slide groove is an arc-shaped groove; the buffer fork is provided with a first fork end and a second fork end, the first fork end is located on the rotation trajectory of the first rotating pendulum or the second rotating pendulum and cooperates with the bearing, and the second fork end is located on the moving trajectory of the buffer block and alternately cooperates with the two fork limit plates.

[0015] In one embodiment, the driving device includes a first set of rods and a second set of rods arranged in parallel. The first set of rods slides axially along the shell and is sleeved with a first spring and a first sleeve. The second set of rods is sleeved with a second spring and a second sleeve. The rotating pendulum pushes the first sleeve to compress the first spring, and pushes the second sleeve to compress the second spring. The first sleeve and the second sleeve slide together to form a sleeve cavity, and a cavity spring is provided in the sleeve cavity.

[0016] Beneficial effects: The driving device adopts a double sleeve design, which is convenient for separately adjusting the forces of the first spring and the second spring, thereby improving the adjustable damping during the opening and closing process of the door body. Moreover, the first sleeve and the second sleeve slide together, and the force between the two is transmitted through the cavity spring, thereby realizing a flexible connection between the first sleeve and the second sleeve.

[0017] In one embodiment, the door pushing device is provided with a push rod for pushing the door body to rotate, the root of the push rod is a cam, the cam is provided with a cam groove and a cam rod, a set of rod forks are coaxially arranged with the cam, and the cam drives the set rod fork through the cam rod, so that the set rod fork drives the first set rod.

[0018] In one embodiment, the cam is composed of two stacked cam pieces, a cam clamping groove is formed between the two cam pieces, a sleeve rod fork is arranged in the cam clamping groove, and a cam rod is arranged in the cam clamping groove to connect the two cam pieces.

[0019] The above embodiments can be arbitrarily combined to form a combined embodiment according to product design requirements and on the premise that the technical solutions are not contradictory. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the internal structure of the present invention;

[0021] Figure 2 is a structural exploded view of the present invention;

[0022] Figure 3 It is a partial structural exploded view of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the door-pushing device in the present invention;

[0024] Figure 5 It is a structural schematic diagram of the first set of rods in the present invention;

[0025] Figure 6 It is a schematic diagram of the working state change of the locking and releasing device in the present invention;

[0026] Figure 7 It is a structural schematic diagram of the first sliding sleeve and the second sliding sleeve in the present invention;

[0027] Figure 8 It is a schematic diagram of the structure of the buffer device in the present invention;

[0028] Fig. 9 It is a structural schematic diagram of the force adjustment device in the present invention;

[0029] Fig.10 It is a schematic diagram of the working state change of the force adjustment device in the present invention;

[0030] Fig.11 This is a structural schematic diagram of the working state 1 of the present invention;

[0031] Fig.12 It is a structural schematic diagram of the working state 2 of the present invention;

[0032] Fig.13 This is a structural schematic diagram of working state three of the present invention;

[0033] Fig.14 This is a structural schematic diagram of working state 4 of the present invention;

[0034] Fig.15 It is a structural schematic diagram of working state 5 of the present invention.

[0035] Wherein: 1 door push device, 11 first rotating swing member, 11a bearing seat, 11b bearing, 11c support seat, 11d groove, 11e boss, 12 second rotating swing member, 12a bearing seat, 12b bearing, 12c support seat, 12d groove, 12e boss, 13 cam, 13a cam groove, 13b cam rod, 13c cam clamping groove, 14 shaft pin, 15 sleeve rod fork, 16 push rod, 17 push rod slider;

[0036] 2 driving device, 21 first rod, 21a first spring, 21b first sleeve, 21c lever section, 21d driving slider, 22 second rod, 22a second spring, 22b second sleeve, 22c rod body convex ring, 23 sleeve cavity, 24 cavity spring, 25 sleeve groove, 26 housing convex ridge;

[0037] 3 locking release device, 31 stopper, 31a blocking portion, 31b locking portion, 32 locking damper, 33 locking hook, 34 releasing push block;

[0038] 4 buffer device, 41 buffer block, 42 ​​buffer damper, 43 buffer fork;

[0039] 5 force adjustment device, 51 adjustment screw, 52 adjustment lever, 53 adjustment spring, 54 adjustment nut, 55 force indicator sheet, 56 force indicator hole. DETAILED DESCRIPTION

[0040] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0041] like Figure 1-Figure 9 As shown, the door opener and closer of this embodiment includes a shell, in which a door pushing device 1, a driving device 2, a locking release device 3, a buffer device 4 and a force adjustment device 5 are arranged.

[0042] like Figure 1-Figure 4 As shown, the door push device 1 comprises a first rotating swing member 11, a second rotating swing member 12, a cam 13, an axle pin 14, a sleeve rod fork 15, a push rod 16 and a push rod slider 17. The door push device 1 is connected to the driving device 2 through the first rotating swing member 11 and the second rotating swing member 12, and pushes the door body to rotate.

[0043] The first rotating pendulum 11 and the second rotating pendulum 12 are arranged side by side and fixed in the housing by the same shaft pin 14, and rotate synchronously around the axis. The first rotating pendulum 11 and the second rotating pendulum 12 are respectively composed of bearing seats 11a, 12a, bearings 11b, 12b and support seats 11c, 12c. The bearing seats 11a, 12a are triangular structures. One end of the bearing seats 11a, 12a and the support seats 11c, 12c are connected to the housing shaft by the shaft pin 14, and the other two ends are respectively connected to the bearings 11b, 12b. The surfaces of the bearing seats 11a, 12a are provided with grooves 11d, 12d, and the surfaces of the support seats 11c, 12c are provided with bosses 11e, 12e. The grooves 11d, 12d are embedded and positioned with the bosses 11e, 12e, and the two support seats 11c, 12c are tightly attached to each other and slide in cooperation.

[0044] The push rod 16 of the door push device 1 is used to push the door body to rotate, and the cam 13 is arranged at the root of the push rod 16. The cam 13 is provided with a cam groove 13a and a cam rod 13b, and a set rod fork 15 is coaxially arranged with the cam 13. The cam 13 moves the set rod fork 15 through the cam rod 13b, so that the set rod fork 15 moves the first set rod 21. The push rod 16 is sleeved and slidably matched with the push rod slider 17, and the push rod slider 17 is connected to the door body bracket shaft.

[0045] The cam 13 is composed of two stacked cam pieces, a cam clamping groove 13c is formed between the two cam pieces, a sleeve rod shift fork 15 is arranged in the cam clamping groove 13c, and a cam rod 13b is arranged in the cam clamping groove 13c to connect the two cam pieces.

[0046] like Figure 1-Figure 3 As shown, the driving device 2 includes a first set of rods 21 and a second set of rods 22 arranged in parallel. Figure 5 As shown, the first rod 21 is provided with a first spring 21a, a first sleeve 21b, a lever section 21c and a driving slider 21d, and the first spring 21a and the first sleeve 21b are slidably sleeved on the first rod 21 along the axial direction of the housing. The second rod 22 is sleeved with a second spring 22a and a second sleeve 22b, the first rotating pendulum 11 pushes the first sleeve 21b to compress the first spring 21a, and the second rotating pendulum 12 pushes the second sleeve 22b to compress the second spring 22a; the locking and releasing device 3 is used to lock and release the first rod 21.

[0047] The first sliding sleeve 21b and the second sliding sleeve 22b are respectively provided with sliding sleeve grooves 25, and the housing is provided with housing ridges 26. The housing clamps the first sliding sleeve 21b and the second sliding sleeve 22b, and the sliding sleeve grooves 25 and the housing ridges 26 are slidably matched. At the same time, the first sliding sleeve 21b and the second sliding sleeve 22b are slidably matched, and the two together form a sliding sleeve cavity 23, and a cavity spring 24 is provided in the sliding sleeve cavity 23. The sliding sleeve cavity 23 is located between the first set rod 21 and the second set rod 22, and the first rotating pendulum 11 and the second rotating pendulum 12 are respectively against the sliding sleeve cavity 23.

[0048] like Figure 6 As shown, the locking release device 3 includes a block 31, a locking damper 32, a lock hook 33 and a release push block 34. The block 31 is rotatable and is forked with a blocking portion 31a and a locking portion 31b. The blocking portion 31a is provided with an obtuse end surface for blocking the first set of rods 21; the locking damper 32 is located on the rotation trajectory of the blocking portion 31a; the lock hook 33 is located on the rotation trajectory of the locking portion 31b and is hooked with the locking portion 31b, and the release push block 34 controls the loosening of the lock hook 33 and the locking portion 31b.

[0049] The blocking portion 31a is provided with a sliding end surface for sliding the first set rod 21, and the obtuse end surface is located at the end of the sliding end surface; the locking damper 32 is clamped between the blocking portion 31a and the locking portion 31b; the locking hook 33 is rotatable, the hook end of the locking hook 33 is hooked with the locking portion 31b, and the pressing end of the locking hook 33 is in contact with the release push block 34, and the locking hook 33 and the release push block 34 are respectively provided with a return spring.

[0050] like Figure 1-Figure 3 As shown, the buffer device 4 includes a buffer block 41, a buffer damper 42 and a buffer fork 43. One end of the buffer damper 42 is fixed to the housing, and the other end cooperates with the buffer block 41. The buffer block 41 is arranged in the buffer slide groove of the housing to slide back and forth. The buffer fork 43 is located between the first rotating pendulum 11 and the second rotating pendulum 12. The three are coaxially arranged. The first rotating pendulum 11 or the second rotating pendulum 12 pushes the buffer fork 43, so that the buffer fork 43 moves the buffer block 41.

[0051] The buffer block 41 is an arc-shaped structure, the buffer slide groove of the shell is an arc-shaped groove, and the buffer fork 43 is provided with a first fork end and a second fork end. The first fork end is located on the rotation track of the first rotating pendulum 11 or the second rotating pendulum 12 and cooperates with the bearing, and the second fork end is located on the moving track of the buffer block 41 and cooperates with the buffer block 41.

[0052] like Figure 8-Figure 9 As shown, the force adjustment device 5 includes an adjustment screw 51, an adjustment lever 52 and an adjustment spring 53. The adjustment spring 53 is sleeved on the second rod 22 and is separated from the second spring 22a by the rod body convex ring 22c on the second rod 22. One end of the adjustment lever 52 compresses the adjustment spring 53, and the other end cooperates with the adjustment nut 54. The adjustment nut 54 moves axially along the adjustment screw 51. The second rod 22 slides axially along the housing, and the adjustment lever 52 pushes the second rod 22 and compresses the adjustment spring 53.

[0053] like Figure 1-Figure 3 As shown, the force adjustment device 5 includes a force indicating plate 55 and a force indicating hole 56 . The force indicating hole 56 is arranged on the shell, and a force scale is arranged on the edge of the force indicating hole 56 . The adjustment lever 52 pushes the force indicating plate 55 to move back and forth in the force indicating hole 56 .

[0054] The working principle of the present invention is described below by taking the door opening-closing-opening working cycle as an example:

[0055] Initially, if Fig.10 As shown, the door body is in an open state, at this time, the buffer block 41 is pushed out of the shell by the buffer damper 42, and the first rotating pendulum member 11 and the second rotating pendulum member 12 are pushed to the cam groove 13a of the door pushing device 1 by the first sliding sleeve 21b and the second sliding sleeve 22b under the action of the first spring 21a and the second spring 22a respectively, and the blocking portion 31a of the block 31 of the locking release device 3 presses against the driving slider 21d of the first set rod 21, and the set rod fork 15 presses against the lever section 21c of the first set rod 21.

[0056] When closing the door, Fig.11 As shown in FIG. 1 , the door body rotates to drive the first rotating pendulum 11 and the second rotating pendulum 12 to rotate out of the cam groove 13a, and push the first sliding sleeve 21b and the second sliding sleeve 22b, compressing the first spring 21a and the second spring 22a to complete energy storage. When the door body touches the buffer block 41, the closing speed slows down until the buffer block 41 retracts into the shell to compress the buffer damper 42, and the door body is completely closed. Fig.12 shown.

[0057] When the door is reopened, Fig.13 As shown, the door body is pressed, the push block 34 is released to drive the lock hook 33 to rotate so that the hook of the lock hook 33 is separated from the locking portion 31b of the block 31. At this time, the energy of the first spring 21a and the buffer damper 42 is released. The buffer block 41 is pushed out of the housing by the buffer damper 42. The first spring 21a pushes the first sleeve rod 21 to slide, overcomes the resistance of the blocking portion 31a of the block 31, and makes the block 31 rotate and compress the locking damper 32 and the reset spring of the lock hook 33. The first sleeve rod 21 slides along the sliding end surface of the block 31 and drives the sleeve rod fork 15 through the lever section 21c. At this time, the first rotating pendulum 11 and the second rotating pendulum 12 push the first sliding sleeve 21b and the second sliding sleeve 22b respectively, compressing the second spring 22a and the cavity spring 24.

[0058] like Fig.14As shown, during the door opening process, when the door rotates to the cam groove 13a reaching the first rotating pendulum 11 and the second rotating pendulum 12, the energy of the second spring 22a and the cavity spring 24 is released, and the second spring 22a pushes the second sliding sleeve 22b to slide along the second set rod 22 and pushes the second rotating pendulum 12 to rotate, and at the same time, the cavity spring 24 drives the first sliding sleeve 21b to slide along the first set rod 21 in the same direction and pushes the first rotating pendulum 11 to rotate, until one end of the first rotating pendulum 11 and the second rotating pendulum 12 respectively sink into the cam groove 13a, and the door is completely opened. The buffer fork 43 pushes the buffer block 41 to return to the shell and compresses the buffer damper 42.

[0059] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A door body opener and closer with a buffer device, comprising a housing, wherein a door pushing device (1), a driving device (2) and a buffer device (4) are arranged in the housing, characterized in that: The door pushing device (1) is connected to the driving device (2) via a rotating member, and pushes the door body to rotate; The buffer device (4) comprises a buffer block (41), a buffer damper (42) and a buffer shift fork (43); one end of the buffer damper (42) is fixed to the housing, and the other end cooperates with the buffer block (41); the buffer block (41) is arranged in a buffer slide groove of the housing to slide back and forth; the rotating pendulum pushes the buffer shift fork (43), so that the buffer shift fork (43) shifts the buffer block (41); The rotating pendulum member comprises a first rotating pendulum member (11) and a second rotating pendulum member (12) arranged side by side, the buffer fork (43) is located between the first rotating pendulum member (11) and the second rotating pendulum member (12), the three are coaxially arranged via an axle pin (14), and the first rotating pendulum member (11) or the second rotating pendulum member (12) pushes the buffer fork (43); The buffer block (41) is provided with a sliding limit plate (41a), a balancing guide plate (41b) and a shift fork limit plate (41c); the housing clamps the buffer block (41) in a buffer slide groove; the buffer slide groove is provided with a slide groove limit plate, a guide hole and a shift fork hole; the sliding limit plate (41a) cooperates with the slide groove limit plate; the balancing guide plate (41b) is clamped in the guide hole; the buffer shift fork (43) passes through the shift fork hole and cooperates with the shift fork limit plate (41c); The buffer block (41) is an arc-shaped structure, the balancing guide piece (41b) is located on the inner circle side of the arc, the sliding limit piece (41a) is located at the top end of the arc, and the shift fork limit piece (41c) is located in the middle and end of the arc; The buffer chute is an arc-shaped chute; The buffer shift fork (43) is provided with a first fork end and a second fork end, the first fork end is located on the rotation track of the first rotating pendulum (11) or the second rotating pendulum (12) and cooperates with the bearing, and the second fork end is located on the movement track of the buffer block (41) and alternately cooperates with the two shift fork limit plates (41c).

2. The door opener and closer with a buffer device according to claim 1, characterized in that: The first rotating pendulum member (11) and the second rotating pendulum member (12) are respectively composed of a bearing seat (11a, 12a), a bearing (11b, 12b) and a support seat (11c, 12c); one end of the bearing seat (11a, 12a), the support seat (11c, 12c) and the buffer fork (43) are connected to the housing shaft through a shaft pin (14); and the other two ends of the bearing seat (11a, 12a) are respectively connected to the bearing (11b, 12b).

3. The door opener and closer with a buffer device according to claim 2, characterized in that: The surfaces of the bearing seats (11a, 12a) are provided with bearing seat grooves (11d, 12d), and the surfaces of the support seats (11c, 12c) are provided with support seat bosses (11e, 12e); the bearing seat grooves (11d, 12d) and the support seat bosses (11e, 12e) are embedded and positioned, and the two support seats (11c, 12c) are tightly attached to each other and slidably matched.

4. The door opener and closer with a buffer device according to claim 3, characterized in that: A shift fork gap is left between the two support seats (11c, 12c), and the buffer shift fork (43) is installed in the shift fork gap. The first rotating pendulum (11) or the second rotating pendulum (12) pushes the buffer shift fork (43) through the bearing.

5. The door opener and closer with a buffer device according to any one of claims 1 to 4, characterized in that: The driving device (2) comprises a first set of rods (21) and a second set of rods (22) which are arranged in parallel. The first set of rods (21) slides axially along the housing and is sleeved with a first spring (21a) and a first sliding sleeve (21b). The second set of rods (22) is sleeved with a second spring (22a) and a second sliding sleeve (22b). The swing member pushes the first sliding sleeve (21b) to compress the first spring (21a), and pushes the second sliding sleeve (22b) to compress the second spring (22a). The first sliding sleeve (21b) and the second sliding sleeve (22b) are slidably matched, and the two together form a sliding sleeve cavity (23). A cavity spring (24) is provided in the sliding sleeve cavity (23).

6. The door opener and closer with a buffer device according to any one of claims 1 to 4, characterized in that: The door pushing device (1) is provided with a push rod (16) for pushing the door body to rotate. The root of the push rod (16) is a cam (13). The cam (13) is provided with a cam groove (13a) and a cam rod (13b). A set rod shift fork (15) is coaxially arranged with the cam (13). The cam (13) shifts the set rod shift fork (15) through the cam rod (13b), so that the set rod shift fork (15) shifts the first set rod (21).

7. The door opener and closer with a buffer device according to claim 6, characterized in that: The cam (13) is composed of two stacked cam plates, a cam clamping groove (13c) is formed between the two cam plates, a sleeve rod shift fork (15) is arranged in the cam clamping groove (13c), and a cam rod (13b) is arranged in the cam clamping groove (13c) to connect the two cam plates.

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