Connecting rod assembly in door closer

Abstract

The connecting rod assembly in the door closer comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is connected to the second connecting rod through a first hinge mechanism, and the other end of the second connecting rod is connected with a fixing base through a second hinge mechanism. The second hinge piece comprises a first flat part integrally formed at the tail end of the second connecting rod, a mounting groove is formed in the fixing base, first through holes are formed in the front side face and the rear side face of the mounting groove respectively, and first pin shafts are inserted into the through holes. The first articulation piece and the second articulation piece serve as locking pieces through screws, and disassembly, assembly and adjustment are easy; the inner tooth retaining gaskets and the rubber sleeves are additionally arranged at the first hinge piece and the second hinge piece, so that smooth swinging is facilitated, loosening of the screws is avoided, and the service life of the hinge is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to door closer technical field especially relates to a connecting rod assembly in door closer. BACKGROUND

[0002] The door closer is a kind of mechanical device installed on the door, for automatically closing the opened door.

[0003] Connecting rod in the door closer is the key component connecting door closer cylinder and fixed seat, and two connecting rods are generally provided, and the installation mode of hinging element between two connecting rods, connecting rod and door closer, connecting rod and fixed seat is generally through riveting, for example, middle hinge point or end hinge point of connecting rod is generally riveted, this connection mode makes it difficult to adjust and maintain replacement for connecting rod part after the installation of door closer is completed, if disassembling is carried out, riveting point needs to be damaged, and economic applicability is reduced, resource waste is easily caused, so it needs to be improved. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of prior art, the utility model provides a connecting rod assembly in door closer to solve the problems mentioned in the above background art.

[0005] The utility model provides the following technical scheme: a connecting rod assembly in door closer, including one connecting rod and second connecting rod, one end of one connecting rod is connected to second connecting rod through one hinge mechanism, and the other end of second connecting rod is connected with fixed seat through second hinge mechanism;

[0006] Second hinge mechanism includes one flat portion integrally formed in the end of second connecting rod, fixed seat is equipped with installation slot, and one first through hole is respectively equipped in the front and back side of installation slot, one pin shaft is inserted into the through hole, one screw is screwed into the end of pin shaft to fix pin shaft in fixed seat, and one flat portion is connected to pin shaft through sleeve component;

[0007] Sleeve component includes hinge ring, there is gap in hinge ring, and connecting plate is integrally formed in the two edges of hinge ring gap, and locking pin is contained in connecting plate;

[0008] The locking pin in sleeve component penetrates one flat portion, and hinge ring is sleeved on pin shaft.

[0009] Preferably, the sleeve component further includes hinge sleeve provided in the hinge ring, and the outer curved surface of the hinge sleeve is attached to the inner curved surface of the hinge ring.

[0010] Preferably, the first hinge mechanism comprises a second pin shaft mounted on the first connecting rod, the end of the second pin shaft is screwed into a second screw, and a washer is clamped between the second screw and the second pin shaft, the end of the second connecting rod is provided with a second flat part, and the second flat part is connected to the second pin shaft through the sleeve part;

[0011] The hinge in the sleeve part is sleeved outside the second pin shaft, and the locking pin penetrates the second flat part.

[0012] Preferably, in the sleeve part, the locking pin comprises a head part and a rod part, the end of the rod part is screwed into a third screw, and the third screw is pressed on the side face of the two connecting plates away from each other respectively.

[0013] Preferably, the second screw and the washer, and the first screw and the fixed seat are respectively provided with internal tooth anti-back-off washers.

[0014] Preferably, the second connecting rod comprises a sleeve and an adjusting rod, and further comprises a positioning mechanism for controlling the combined length of the sleeve and the adjusting rod, and the first flat part and the second flat part are respectively located at the ends of the adjusting rod and the sleeve.

[0015] Preferably, the positioning mechanism comprises a cylindrical groove arranged in the end face of the sleeve, and a nut is fixedly arranged on the end face of the second connecting rod, and the outer curved surface of the adjusting rod is processed with threads, and the adjusting rod is screwed to the nut and inserted into the sleeve.

[0016] The utility model provides a connecting rod assembly in a door closer, which has the following beneficial effects:

[0017] The first hinge mechanism and the second hinge mechanism in the utility model are locked by screws, which are easy to disassemble and adjust.

[0018] The utility model additionally provides internal tooth anti-back-off washers and rubber sleeves at the first hinge mechanism and the second hinge mechanism, which are beneficial to smooth swinging, avoid screw loosening, and improve the service life of the utility model. ACCURACY OF DRAWINGS

[0019] Figure 1 It is the appearance schematic drawing of the utility model;

[0020] Figure 2 It is Figure 1 the explosion map at the fixed seat in the second connecting rod;

[0021] Figure 3 It is Figure 1 the explosion map at the second flat part in the second connecting rod.

[0022] In the drawings:

[0023] 11, first connecting rod; 12, second connecting rod; 13, fixed seat; 14, first flat part; 15, hinge ring; 16, connecting plate; 17, locking pin; 18, first pin shaft; 19, first screw; 20, hinge sleeve; 21, second pin shaft; 22, second screw; 23, washer; 24, second flat part; 25, gasket; 31, sleeve; 32, adjusting rod; 91, third screw. DETAILED DESCRIPTION

[0024] The embodiments of the present application are described in detail below, examples of which are shown in the drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0025] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0026] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0027] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] Reference Figures 1-3According to the embodiment of the door closer inner connecting rod assembly, one end of the first connecting rod 11 is connected to the second connecting rod 12 through a first hinge mechanism, and the other end of the second connecting rod 12 is connected with the fixing seat 13 through a second hinge mechanism, and the end of the first connecting rod 11 not connected with the second connecting rod 12 can be installed on the door closer body.

[0029] The second hinge mechanism comprises a first flat part 14 integrally formed at the end of the second connecting rod 12, the fixing seat 13 is provided with a mounting groove, and a first through hole is arranged on the front and rear sides of the mounting groove, respectively, a first pin shaft 18 is inserted into the first through hole, a first screw 19 is screwed into the end of the first pin shaft 18, and the head of the first pin shaft 18 and the head of the first screw 19 are respectively abutted on the two sides of the fixing seat 13, so that the first pin shaft 18 is fixed in the fixing seat 13, and the first flat part 14 is connected to the first pin shaft 18 through a sleeve part.

[0030] In the embodiment, the sleeve part comprises a hinge ring 15, the hinge ring 15 has a gap, and a connecting plate 16 is integrally formed at the two edges of the gap of the hinge ring 15, and the connecting plate 16 is provided with a locking pin 17;

[0031] The locking pin 17 in the sleeve part penetrates the first flat part 14, and the hinge ring 15 is sleeved outside the first pin shaft 18.

[0032] Through the installation mode, the second connecting rod 12 can swing in the up-down direction and the front-back direction relative to the fixing seat 13.

[0033] In addition, in order to make the fixing seat 13 swing smoothly and reduce resistance, the sleeve part further comprises a hinge sleeve 20 arranged in the hinge ring 15, and the outer curved surface of the hinge sleeve 20 is attached to the inner curved surface of the hinge ring 15, that is, the first pin shaft 18 is sleeved in the hinge sleeve 20.

[0034] The first hinge mechanism comprises a second pin shaft 21 arranged on the first connecting rod 11, a second screw 22 is screwed into the end of the second pin shaft 21, and a gasket 23 is clamped between the second screw 22 and the second pin shaft 21, and the end of the second connecting rod 12 is provided with a second flat part 24, and the second flat part 24 is also connected to the second pin shaft 21 through the sleeve part;

[0035] In the second sleeve part, the hinge ring 15 is sleeved outside the second pin shaft 21 and clamped between the first connecting rod 11 and the gasket 23, and the locking pin 17 penetrates the second flat part 24.

[0036] Through the above arrangement, the second connecting rod 12 can swing up and down and swing forward and backward relative to the second connecting rod 12.

[0037] In the second embodiment of the second pin shaft 21, the outer curved surface of the second pin shaft 21 is integrally formed with a circular truncated cone adhered to the first connecting rod 11, so that the hinge ring 15 is clamped between the circular truncated cone and the washer 23, avoiding excessive wear of the first connecting rod 11 when the hinge ring 15 rotates.

[0038] In order to facilitate the disassembly of the sleeve component, the locking pin 17 includes a head and a rod portion in the sleeve component, and a third screw 91 is screwed into the end of the rod portion, and the third screw 91 is pressed on the side of the two connecting plates 16 away from each other, respectively, to achieve the fixing function.

[0039] In addition, in order to avoid the second screw 22 and the first screw 19 from falling off, the second screw 22 and the washer 23, and the first screw 19 and the fixed seat 13 are respectively provided with internal tooth anti-back pad 25.

[0040] In the second embodiment of the connecting rod assembly in the door closer, the second connecting rod 12 includes a sleeve 31 and an adjusting rod 32, and further includes a positioning mechanism for controlling the combined length of the sleeve 31 and the adjusting rod 32, and the first flat portion 14 and the second flat portion 24 are respectively at the ends of the adjusting rod 32 and the sleeve 31.

[0041] The positioning mechanism includes a cylindrical groove provided in the end face of the sleeve 31, and a nut is fixedly arranged on the end face of the second connecting rod 12, and the outer curved surface of the adjusting rod 32 is processed with threads, and the adjusting rod 32 is screwed to the nut and inserted into the sleeve 31, that is, the staff can rotate the adjusting rod 32 to make the adjusting rod 32 enter and exit the sleeve 31, thereby adjusting the overall length of the second connecting rod 12.

[0042] In addition, the staff can disassemble and assemble the connecting rod assembly in the door closer by rotating the second screw 22, the third screw 91 and the first screw 19, which is easy to maintain.

[0043] The above only describes specific embodiments of the present application, but the technical features of the present application are not limited to this, any person skilled in the art can make changes or modifications in the field of the present application, which are covered in the patent scope of the present application.

Claims

1. A link assembly within a door closer, comprising a first link (11) and a second link (12), characterised in that: One end of the first connecting rod (11) is connected to the second connecting rod (12) through a first hinge mechanism, and the other end of the second connecting rod (12) is connected with a fixed seat (13) through a second hinge mechanism; The second hinge mechanism comprises a first flat part (14) integrally formed at the end of the second connecting rod (12), the fixed seat (13) is provided with a mounting groove, and one first through hole is respectively arranged on the front and rear sides of the mounting groove, a first pin shaft (18) is inserted into the through hole, one end of the first pin shaft (18) is screwed with a first screw (19), so that the first pin shaft (18) is fixed in the fixed seat (13), and the first flat part (14) is connected to the first pin shaft (18) through a sleeve component; The sleeve component comprises a hinge ring (15), the hinge ring (15) has a gap, and the two edges of the gap of the hinge ring (15) are integrally formed with a connecting plate (16), and the connecting plate (16) is provided with a locking pin (17); The locking pin (17) in the sleeve component penetrates the first flat part (14), and the hinge ring (15) is sleeved outside the first pin shaft (18).

2. A link assembly within a door closer according to claim 1, wherein: The sleeve component further comprises a hinge sleeve (20) arranged in the hinge ring (15), and the outer curved surface of the hinge sleeve (20) is attached to the inner curved surface of the hinge ring (15).

3. A link assembly within a door closer according to claim 1, wherein: The first hinge mechanism comprises a second pin shaft (21) arranged on the first connecting rod (11), one end of the second pin shaft (21) is screwed with a second screw (22), and a gasket (23) is clamped between the second screw (22) and the second pin shaft (21), and the end of the second connecting rod (12) is provided with a second flat part (24), and the second flat part (24) is also connected to the second pin shaft (21) through the sleeve component; The hinge ring (15) in the sleeve component is sleeved outside the second pin shaft (21), and the locking pin (17) penetrates the second flat part (24).

4. A link assembly for a door closer according to claim 1 or claim 3 wherein: In the sleeve component, the locking pin (17) comprises a head and a rod part, a third screw (91) is screwed into the end of the rod part, and the third screw (91) and the head are respectively pressed on the side surfaces of the two connecting plates (16) away from each other.

5. A link assembly within a door closer according to claim 3, wherein: The second screw (22) and the gasket (23) are respectively provided with an internal tooth anti-back pad (25).

6. A link assembly within a door closer according to claim 3, wherein: The second connecting rod (12) comprises a sleeve (31) and an adjusting rod (32), and further comprises a positioning mechanism for controlling the combined length of the sleeve (31) and the adjusting rod (32), and the first flat part (14) and the second flat part (24) are respectively arranged at the ends of the adjusting rod (32) and the sleeve (31).

7. A link assembly within a door closer according to claim 6, wherein: The positioning mechanism comprises a cylindrical groove arranged in the end surface of the sleeve (31), and a nut is fixedly arranged on the end surface of the second connecting rod (12), and the outer curved surface of the adjusting rod (32) is processed with a thread, and the adjusting rod (32) is screwed with the nut and inserted into the sleeve (31).

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