Dustproof sliding rail for door closer

Abstract

The dustproof sliding rail for the door closer comprises a sliding rail body, supports are installed on the two sides of the sliding rail body, synchronous wheels are connected to the two supports in a rotating mode, a synchronous belt covering a top opening of the sliding rail body is installed between the two synchronous wheels, a sliding block is arranged at the position of the sliding rail body in a sliding mode, and a connecting rod is arranged above the sliding block. A connecting shaft penetrating through the synchronous belt is fixed between the connecting rod and the sliding block. The sliding rail sliding block is ingenious and reasonable in structural design, dustproof and free of cleaning, dust cannot pollute lubricating grease at the sliding block, the sliding rail sliding block can run smoothly after being used for a long time, and the sliding rail sliding block is worthy of application and popularization.

Description

TECHNICAL FIELD

[0001] The utility model relates to a slide rail, especially a dustproof slide rail for door closer. BACKGROUND

[0002] The slide rail type door closer closes the door through the mode that connecting rod moves at the slide rail, however, the conventional slide rail type door closer is easy to accumulate dust because the top end of the slide rail is open, and the dust will affect the operation of the sliding block in the slide rail (the sliding groove in the slide rail is smeared with lubricating grease, and a large amount of dust attached to the lubricating grease will increase the running resistance of the sliding block), which will directly affect the smoothness of the sliding block operation, and the dust at the top end of the conventional slide rail is difficult to clean, and the sliding block at the slide rail is seriously worn after long-term use, which will directly affect the normal operation of the door closer.

[0003] Chinese utility model patent CN 218623819 U discloses a kind of door closer slide rail, the slide rail, including: slide rail body, is equipped with recess, the both sides of recess are equipped with the limiting sliding groove that projects recess bottom surface, the bottom surface of recess is close to one end and is equipped with the raised spring piece;Sliding block, is set in the end of recess away from spring piece, including sliding part, located the rotating part of sliding part top surface, sliding part is cylindrical, sliding part is slidably connected with two limiting sliding grooves, the bottom of sliding part is equipped with the steel ball that is positioned with spring piece abutment, rotating part is equipped with the swing arm of rotation connection, swing arm is used to be connected with door closer body.The top end of the slide rail is open, lubricating grease is easy to accumulate dust and cause the sliding block to run with large frictional resistance, which will directly affect the normal use of the door closer. UTILITY MODEL CONTENTS

[0004] The utility model solves the above-mentioned prior art defects, provides a dustproof guide rail for door closer with dustproof effect, which meets the requirements of dustproof, no need to clean, dust not polluting the lubricating grease at the sliding block, and smooth operation of the slide rail and sliding block after long-term use.

[0005] The utility model solves the technical problems by adopting the following technical scheme: the dustproof slide rail for door closer includes a slide rail body, brackets are installed on both sides of the slide rail body, synchronous wheels are rotatably connected to the two brackets, a synchronous belt covers the top opening of the slide rail body and is installed between the two synchronous wheels, a sliding block is slidably arranged at the slide rail body, a connecting rod is arranged above the sliding block, and a connecting shaft passes through the synchronous belt and is fixed between the connecting rod and the sliding block. The brackets, synchronous wheels, synchronous belt, and connecting shaft function as follows: when the sliding block is pushed or closed by the door, the sliding block will move, at this time, the connecting shaft can drive the synchronous belt to move, so that the synchronous belt covers the top opening of the slide rail body in the open or closed state of the door, ensuring that dust is blocked outside and not falling on the lubricating grease in the slide rail body, so that the sliding block runs smoothly for a long time.

[0006] Further improvements include the addition of annular grooves at both the top and bottom of the slide rail body for limiting the movement of the timing belt. These annular grooves serve to limit the direction of movement of the timing belt, preventing it from dislodging from the timing pulley during movement.

[0007] Further improvements include a self-lubricating layer on the inner surface of the annular track groove. The purpose of this self-lubricating layer is to prevent severe friction when the contour surface of the synchronous belt contacts the surface of the annular track groove, thus minimizing frictional resistance when the synchronous belt is moved and not affecting the operation of the door closer. This self-lubricating layer is made of tin bronze.

[0008] Further improvements include the installation of bearings on both sides of the synchronous pulley to mate with the rotating shaft. The function of these bearings is to make the synchronous pulley rotate more easily with less resistance, thereby making it easier for the connecting shaft to drive the synchronous belt to move synchronously when the door closer is running, with less resistance and minimal impact on the door closer's closing action.

[0009] Further improvements include a boss fixed to the top of the synchronous belt that mates with the connecting rod. The purpose of this boss is to increase the strength of the contact area when the connecting shaft drives the synchronous belt, ensuring that the contact area between the synchronous belt and the connecting shaft will not crack when the synchronous belt is moved for a long time.

[0010] The beneficial effects of this utility model are:

[0011] 1) The top of the slide rail opening can be sealed by the bracket, timing pulley, and timing belt, thereby preventing dust from accumulating in the slide groove, contaminating the lubricating grease, and affecting the smooth operation of the slider;

[0012] 2) The annular groove allows the timing belt to be limited at the annular groove, which not only seals the opening of the slide rail body and isolates it from external pollution, but also limits the position of the timing belt to prevent it from detaching from the timing pulley, so that the slider will work smoothly for a long time.

[0013] 3) The self-lubricating layer and bearings enable the connecting rod to drive the connecting shaft to move and simultaneously drive the timing belt to move, resulting in low resistance and minimal impact on the operation of the door closer. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 for Figure 1 AA cross-section view;

[0016] Figure 3 for Figure 1 BB cross-section;

[0017] Figure 4 C-C profile view of Figure 1

[0018] Figure 5 D area partial enlarged view of Figure 2

[0019] E area partial enlarged view of Figure 6 Figure 2

[0020] Figure 7 The utility model discloses a working principle diagram.

[0021] Figure mark explanation: slide rail body 1, support 2, synchronous wheel 3, synchronous belt 4, boss 4-1, connecting shaft 5, annular track groove 6, self-lubricating layer 6-1, bearing 7, sliding block 8, connecting rod 9, door frame 10. DETAILED DESCRIPTION

[0022] The utility model will be further explained in connection with the drawings:

[0023] Referring to the drawings: this dustproof slide rail for door closer, including slide rail body 1, both sides of slide rail body 1 are installed with support 2, both supports 2 are rotatably connected with synchronous wheel 3, and the synchronous belt 4 covering the top opening of slide rail body 1 is installed between two synchronous wheels 3, and the sliding block 8 is slid in the slide rail body 1, and the connecting rod 9 is arranged above the sliding block 8, and the connecting shaft 5 passing through the synchronous belt 4 is fixed between the connecting rod 9 and the sliding block 8.

[0024] The top end and the bottom end of slide rail body 1 are fixed with annular track groove 6 for limiting synchronous belt 4.

[0025] The inner surface of annular track groove 6 is provided with self-lubricating layer 6-1.

[0026] Both sides of synchronous wheel 3 are installed with bearing 7 matched with the rotating shaft.

[0027] The top end of synchronous belt 4 is fixed with boss 4-1 matched with connecting rod 9.

[0028] The working principle of the utility model: when the door is automatically closed, the door closer (not shown in the drawing) will push the connecting rod 9 to move through the elastic force, and the connecting rod 9 will synchronously push the connecting shaft 5 to move, and the connecting shaft 5 will synchronously drive the sliding block 8 to move (the sliding block 8 is in the sliding groove of slide rail body 1, and a large amount of lubricating grease is smeared in the sliding groove, so that the friction between the sliding block 8 and the sliding groove is greatly reduced, in the process of being pushed, the synchronous belt 4 can be driven to move through the connecting shaft 5, so that no matter the door is in the opening process or the closing process, the synchronous belt 4 will always cover the top opening of slide rail body 1, ensures that the dust is blocked outside, and will not fall in the lubricating grease in slide rail body 1, so that the sliding block 6 is smooth for a long time (such as Figure 1 ,​​​2 , 3, 4, 5, 6, 7) are worth popularization and application.

[0029] Although the utility model has carried on the illustration and the description through the reference preferred embodiment, but, the professional ordinary skilled person should understand, can make various various changes in form and detail in the scope of claims.

Claims

1. A dustproof sliding rail for a door closer, comprising a sliding rail body (1), characterized in that: Both sides of the slide rail body (1) are provided with supports (2), both of which are rotatably connected with synchronous wheels (3), and between the two synchronous wheels (3) is installed a synchronous belt (4) covering the top opening of the slide rail body (1), the slide rail body (1) is provided with a sliding block (8), the upper side of the sliding block (8) is provided with a connecting rod (9), and between the connecting rod (9) and the sliding block (8) is fixed a connecting shaft (5) penetrating through the synchronous belt (4).

2. The dustproof slide rail for a door closer according to claim 1, characterized in that: Both the top end and the bottom end of the slide rail body (1) are fixed with annular rail grooves (6) for limiting the synchronous belt (4).

3. The dustproof slide rail for a door closer according to claim 2, characterized in that: The inner surface of the annular rail groove (6) is provided with a self-lubricating layer (6-1).

4. The dustproof slide rail for a door closer according to claim 1, wherein: Both sides of the synchronous wheel (3) are provided with bearings (7) matched with the rotating shaft.

5. The dustproof slide rail for a door closer according to claim 1, wherein: The top end of the synchronous belt (4) is fixed with a boss (4-1) matched with the connecting rod (9). The inner surface of the annular rail groove (6) is provided with a self-lubricating layer (6-1). Both sides of the synchronous wheel (3) are provided with bearings (7) matched with the rotating shaft. The top end of the synchronous belt (4) is fixed with a boss (4-1) matched with the connecting rod (9).

Images