Length-adjustable door stopper device
By designing an adjustable telescopic rod assembly and locking mechanism, the problem of fixed rod length in existing door catch devices has been solved, enabling the door catch device to be adjusted in length to adapt to different gaps from the wall and enhancing mechanical strength.
Patent Information
- Application Number
- CN202423211329.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2034-12-24
AI Technical Summary
The existing door catch device has a fixed rod length, which cannot adapt to different gaps from the wall, resulting in insufficient mechanical strength and limited applicability.
A door catch device including a telescopic rod assembly and a locking mechanism was designed. The locking mechanism unlocks and locks the relative position between the two connecting rods, thereby realizing the telescopic adjustment of the connecting rods to adapt to different gaps from the wall.
The length of the door catch device is adjustable, making it suitable for situations where the door is far from the wall, thus expanding its applicability and enhancing its mechanical strength.
Smart Images
Figure CN223794032U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a door catch device with adjustable length. Background Technology
[0002] In existing technology, door catches are generally divided into floor-mounted and wall-mounted types. Wall-mounted door catches include a magnetic base on the door panel and a corresponding mounting base on the wall. The mounting base has a horizontally extending connecting rod, and the end of the connecting rod has a ball head for attracting the magnetic base. The ball head and the connecting rod are generally an integral structure, and the length of the connecting rod is fixed. For some door frame installation positions that are far from the wall, the connecting rod length of ordinary door catches is insufficient. If a connecting rod and ball head of the corresponding length are specially made, it is easy to have insufficient mechanical strength and cannot be used for various different gaps from the wall. Utility Model Content
[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a door catch device with an adjustable length to adapt to different gaps from the wall.
[0004] An adjustable-length door catch device according to an embodiment of the present invention includes: a mounting base, on which a telescopic rod assembly is provided, the telescopic rod assembly including at least two connecting rods connected in sequence, a locking mechanism being provided between two adjacent connecting rods, the locking mechanism being able to lock or unlock the relative position between the two connecting rods, the connecting rod located at one end of the telescopic rod assembly being fixed on the mounting base, and the connecting rod located at the other end of the telescopic rod assembly being connected to a ball head made of magnetic material.
[0005] The length-adjustable door catch device according to the embodiments of the present invention has at least the following beneficial effects:
[0006] When it is necessary to extend the length of the telescopic rod assembly, the locking mechanism unlocks the relative position between the two connecting rods, and then drives the two connecting rods to extend or shorten relative to each other. The locking mechanism then locks the relative position between the two connecting rods. This is suitable for situations where the door is far from the wall, and the distance of the ball head extending from the wall can be adjusted according to the needs of use, making it widely applicable.
[0007] In some embodiments of this utility model, the connecting rod is configured as two segments, namely an inner sleeve and an outer sleeve that is slidably sleeved on the outer peripheral wall of the inner sleeve. One end of the outer sleeve is fixed on the mounting base, and the end of the inner sleeve near the ball head extends out of the outer sleeve. The locking mechanism includes a locking sleeve that is sleeved on the outside of the outer sleeve and the inner sleeve. The locking sleeve can be displaced along the length direction of the inner sleeve to drive the end of the outer sleeve to hug the inner sleeve.
[0008] In some embodiments of this utility model, at least two arc plates are formed at the end of the outer sleeve away from the mounting base, which are circumferentially distributed around the central axis of the outer sleeve. The outer peripheral wall of the arc plate is provided with an external thread section. At the end of the external thread section, the arc plate is provided with a frustum-shaped slope section that is inclined toward the inner sleeve. The inner peripheral wall of the locking sleeve is provided with an internal thread section that matches the external thread section. At the end of the internal thread section, the locking sleeve is provided with a pushing part that can abut against the frustum-shaped slope section so that the arc plate clamps the inner sleeve.
[0009] In some embodiments of this utility model, the pushing part is a frustum contact surface formed on one end of the internal thread section near the ball head. During the process of the locking sleeve being screwed onto the outer sleeve to move the locking sleeve toward the mounting base, the frustum contact surface can move upward along the slope direction of the frustum slope section to bring each of the arc plates closer to each other.
[0010] In some embodiments of this utility model, the locking sleeve has a stop groove inside that is connected to one end of the contact surface of the frustum away from the internal thread section, and the arc plate abuts against the bottom of the stop groove to limit the locking position of the locking sleeve.
[0011] In some embodiments of this utility model, the end of the inner sleeve away from the ball head is provided with an anti-detachment protrusion ring. The diameter of the anti-detachment protrusion ring matches the inner diameter of the outer sleeve so that it can abut against the inner peripheral wall of the truncated cone slope section to prevent the inner sleeve from detaching from the outer sleeve.
[0012] In some embodiments of this utility model, the mounting base includes a mounting plate and a decorative cover. The mounting plate has multiple through holes. The decorative cover is detachably connected to the mounting plate and can cover the through holes. The outer sleeve is fixed to the decorative cover, and the end of the inner sleeve away from the ball head faces the mounting plate.
[0013] In some embodiments of this utility model, a connecting seat is provided inside the end of the inner sleeve away from the mounting base, and a bolt extending along the length direction of the inner sleeve passes through the connecting seat. The ball head is provided with a threaded channel that mates with the bolt.
[0014] In some embodiments of this utility model, the end of the inner sleeve away from the mounting base is formed with a constricted tube portion, the connecting seat is movably disposed inside the inner sleeve, and when the bolt is tightened into the threaded channel, it drives the connecting seat to abut against the inner wall of the constricted tube portion and drives the spherical surface of the ball head to abut against the opening of the constricted tube portion.
[0015] In some embodiments of this utility model, the constricted tube is a frustum sleeve that gradually narrows toward the ball head, the connecting seat is a frustum body made of soft material, the frustum body has a clearance hole through which the bolt passes through the middle, and the outer peripheral wall of the frustum body can be tightly fitted with the inner peripheral wall of the frustum sleeve.
[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0018] Figure 1 This is a schematic diagram of one embodiment of the adjustable-length door catch device of this utility model;
[0019] Figure 2 for Figure 1 Internal cross-sectional schematic diagram of the embodiment;
[0020] Figure 3 for Figure 2 An enlarged schematic diagram of part A;
[0021] Figure 4 for Figure 1 Schematic diagram of structural breakdown of the embodiment.
[0022] Figure label:
[0023] Mounting base 100; Mounting plate 110; Through hole 111; Decorative cover 120; Telescopic rod assembly 200; Ball head 300; Threaded channel 310; Inner sleeve 400; Anti-loosening protrusion ring 410; Narrow tube section 420; Outer sleeve 500; Arc plate 510; External thread section 520; Frustum bevel section 530; Locking sleeve 600; Internal thread section 610; Frustum contact surface 620; Stop groove 630; Connecting seat 700; Clearance hole 710; Bolt 800. Detailed Implementation
[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0025] In the description of this utility model, it should be understood that the directional descriptions, such as the terms "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0026] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0028] See Figures 1 to 4 This utility model discloses an adjustable-length door catch device, comprising: a mounting base 100, on which a telescopic rod assembly 200 is provided, the telescopic rod assembly 200 comprising at least two sequentially connected connecting rods, a locking mechanism being provided between adjacent connecting rods, the locking mechanism being able to lock or unlock the relative position between the two connecting rods, the connecting rod located at one end of the telescopic rod assembly 200 being fixed to the mounting base 100, and the connecting rod located at the other end of the telescopic rod assembly 200 being connected to a ball head 300 made of magnetic material.
[0029] When it is necessary to extend the length of the telescopic rod assembly 200, the locking mechanism unlocks the relative position between the two connecting rods, and then drives the two connecting rods to extend or shorten relative to each other. The locking mechanism then locks the relative position between the two connecting rods. This is suitable for situations where the door is far from the wall, and the distance of the ball head 300 extending from the wall can be adjusted according to the needs of use, making it widely applicable.
[0030] See Figure 1 and Figure 2In some embodiments of this utility model, the connecting rod is configured as two segments, namely an inner sleeve 400 and an outer sleeve 500 slidably sleeved on the outer peripheral wall of the inner sleeve 400. One end of the outer sleeve 500 is fixed on the mounting base 100, and the end of the inner sleeve 400 near the ball head 300 extends out of the outer sleeve 500. The locking mechanism includes a locking sleeve 600 sleeved on the outside of the outer sleeve 500 and the inner sleeve 400. The locking sleeve 600 can be displaced along the length direction of the inner sleeve 400 to drive the end of the outer sleeve 500 to hug the inner sleeve 400. Understandably, when it is necessary to adjust the overall length of the telescopic rod assembly 200, the locking sleeve 600 is first moved along the length of the inner sleeve 400 until the outer sleeve 500 no longer grips the inner sleeve 400. Then, the inner sleeve 400 is grasped and extended or retracted along the outer sleeve 500 to adjust the overall length of the inner sleeve 400 and the outer sleeve 500. Then, the locking sleeve 600 is moved along the length of the inner sleeve 400 to drive the end of the inner sleeve 400 to grip the outer wall of the inner sleeve 400, thereby preventing the inner sleeve 400 from moving relative to the outer sleeve 500. This prevents the ball from rotating relative to the inner sleeve 400 and causing the outer sleeve 500 to retract when the magnetic base on the door hits the ball head 300.
[0031] See Figure 3 and Figure 4In some embodiments of this utility model, in order to improve the clamping effect of the end of the outer sleeve 500 on the inner sleeve 400, at least two arc plates 510 are formed at the end of the outer sleeve 500 away from the mounting base 100, which are circumferentially distributed around the central axis of the outer sleeve 500. The outer peripheral wall of the arc plate 510 is provided with an external thread section 520. The arc plate 510 is provided with a frustum slope section 530 inclined towards the inner sleeve 400 at the end of the external thread section 520. The inner peripheral wall of the locking sleeve 600 is provided with an internal thread section 610 that matches the external thread section 520. The locking sleeve 600 is provided with a pushing part at the end of the internal thread section 610 that can abut against the frustum slope section 530 so that the arc plate 510 clamps the inner sleeve 400. Specifically, in this embodiment, the outer sleeve 500 and the multiple arc plates 510 are an integral plastic structure, with gaps between adjacent arc plates 510 to provide space for them to move closer or further apart. During the process of the locking sleeve 600 rotating relative to the outer sleeve 500 to clamp the inner sleeve 400, the external thread section 520 screws along the internal thread section 610. The pushing part first contacts the lower slope of the frustum-shaped slope section 530 and then climbs upwards along the frustum-shaped slope section 530. Simultaneously, the arc plates 510 gradually undergo elastic deformation towards the center of the inner sleeve 400 until all the arc plates 510 clamp the inner sleeve 400. Of course, in other embodiments, the external thread section 520 can be replaced by a serrated groove arranged along the length of the outer sleeve 500, and the internal thread section 610 can be replaced by an elastic latching part that engages with any of the slots in the serrated groove, which also achieves the stabilization of the locking sleeve 600 after it has moved a certain distance relative to the outer sleeve 500.
[0032] See Figures 2 to 4 In some embodiments of this utility model, in order to ensure that the pushing part drives the arc plate 510 to deform as a whole to increase the contact area when the arc plate 510 hugs the inner sleeve 400, the pushing part is a frustum contact surface 620 formed on one end of the internal thread section 610 near the ball head 300. During the process of the locking sleeve 600 being screwed onto the outer sleeve 500 to move the locking sleeve 600 towards the mounting base 100, the frustum contact surface 620 can move upward along the slope direction of the frustum slope section 530 to bring each of the arc plates 510 closer to each other.
[0033] See Figure 3In some embodiments of this utility model, in order to prevent the locking sleeve 600 from getting stuck due to excessive force when screwing it on, which would make it difficult to loosen the locking sleeve 600 again, the locking sleeve 600 is provided with a stop groove 630 inside, which is connected to the end of the contact surface 620 of the truncated cone away from the internal thread section 610. The arc plate 510 abuts against the bottom of the stop groove 630 to limit the locking position of the locking sleeve 600.
[0034] See Figure 2 and Figure 4 In some embodiments of this utility model, the inner sleeve 400 is provided with an anti-detachment protrusion 410 at the end away from the ball head 300. The diameter of the anti-detachment protrusion 410 matches the inner diameter of the outer sleeve 500 so that it can abut against the inner peripheral wall of the frustum-shaped slope section 530 to prevent the inner sleeve 400 from detaching from the outer sleeve 500. It is understood that when the inner sleeve 400 extends from the outer sleeve 500 to the maximum length of the telescopic rod assembly 200, the anti-detachment protrusion 410 abuts against the inner peripheral wall of the frustum-shaped slope section 530 to prevent the inner sleeve 400 from completely detaching from the outer sleeve 500, thus preventing damage to the door catch device.
[0035] See Figure 1 and Figure 2 In some embodiments of this utility model, the mounting base 100 includes a mounting plate 110 and a decorative cover 120. The mounting plate 110 has multiple through holes 111. The decorative cover 120 is detachably connected to the mounting plate 110 and can cover the through holes 111. The outer sleeve 500 is fixed to the decorative cover 120, and the inner sleeve 400 has one end away from the ball head 300 facing the mounting plate 110. It is understood that during installation, fastening screws or expansion screws are first passed through the through holes 111 and tightened to the wall. Then, the entire assembly consisting of the decorative cover 120, outer sleeve 500, and inner sleeve 400 is installed on the mounting plate 110. When the telescopic rod assembly 200 is at its minimum length, the end of the inner sleeve 400 away from the ball head 300 abuts against the inner surface of the mounting plate 110. Alternatively, the outer surface of the mounting plate 110 can also be adhered to the wall using an adhesive structure.
[0036] See Figure 3In some embodiments of this utility model, a connecting seat 700 is provided inside the end of the inner sleeve 400 away from the mounting base 100. A bolt 800 extending along the length direction of the inner sleeve 400 passes through the connecting seat 700. The ball head 300 is provided with a threaded channel 310 that mates with the bolt 800. It is understood that during assembly, the whole assembly of the connecting seat 700 and the bolt 800 is placed into the inner sleeve 400, with the bolt 800 extending from the end of the inner sleeve 400. Then, the threaded channel 310 of the ball head 300 is aligned with the bolt 800 and tightened. The bolt 800 and the connecting seat 700 can have friction to prevent relative rotation between them.
[0037] See Figures 2 to 4 In some embodiments of this utility model, in order to avoid adding components to fix the connecting seat 700 to the end of the inner sleeve 400, the end of the inner sleeve 400 away from the mounting seat 100 is formed with a constricted tube portion 420. The connecting seat 700 is movably disposed inside the inner sleeve 400. When the bolt 800 is tightened into the threaded channel 310, it drives the connecting seat 700 to abut against the inner wall of the constricted tube portion 420 and drives the spherical surface of the ball head 300 to abut against the opening of the constricted tube portion 420.
[0038] See Figure 3 and Figure 4 In some embodiments of this utility model, in order to further improve the stability of the installation position of the ball head 300 and reduce the local deformation of the constricted tube 420, the constricted tube 420 is a frustum sleeve that gradually narrows towards the ball head 300, the connecting seat 700 is a frustum body made of soft material, and a clearance hole 710 is provided through the middle of the frustum body for the bolt 800 to pass through, and the outer peripheral wall of the frustum body can be tightly fitted with the inner peripheral wall of the frustum sleeve.
[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0040] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A door catch device with adjustable length, characterized in that, include: Mounting base (100), on which a telescopic rod assembly (200) is provided, the telescopic rod assembly (200) includes at least two connecting rods connected in sequence, a locking mechanism is provided between two adjacent connecting rods, the locking mechanism can lock or unlock the relative position between the two connecting rods, the connecting rod at one end of the telescopic rod assembly (200) is fixed on the mounting base (100), and the connecting rod at the other end of the telescopic rod assembly (200) is connected to a ball head (300) made of magnetic material.
2. The adjustable-length door catch device according to claim 1, characterized in that: The connecting rod is configured in two sections, namely an inner sleeve (400) and an outer sleeve (500) that is slidably sleeved on the outer peripheral wall of the inner sleeve (400). One end of the outer sleeve (500) is fixed on the mounting base (100), and the end of the inner sleeve (400) near the ball head (300) extends out of the outer sleeve (500). The locking mechanism includes a locking sleeve (600) that is sleeved on the outer sleeve (500) and the inner sleeve (400). The locking sleeve (600) can be displaced along the length direction of the inner sleeve (400) to drive the end of the outer sleeve (500) to hug the inner sleeve (400).
3. The adjustable-length door catch device according to claim 2, characterized in that: At least two arc plates (510) are formed at the end of the outer sleeve (500) away from the mounting base (100), which are circumferentially distributed around the central axis of the outer sleeve (500). The outer peripheral wall of the arc plate (510) is provided with an external thread section (520). At the end of the external thread section (520), the arc plate (510) is provided with a frustum slope section (530) inclined toward the inner sleeve (400). The inner peripheral wall of the locking sleeve (600) is provided with an internal thread section (610) that matches the external thread section (520). At the end of the internal thread section (610), the locking sleeve (600) is provided with a pushing part that can abut against the frustum slope section (530) so that the arc plate (510) clamps the inner sleeve (400).
4. The adjustable-length door catch device according to claim 3, characterized in that: The pushing part is a frustum contact surface (620) formed on one end of the internal thread section (610) near the ball head (300). During the process of the locking sleeve (600) being screwed onto the outer sleeve (500) to move the locking sleeve (600) towards the mounting base (100), the frustum contact surface (620) can move upward along the slope direction of the frustum slope section (530) to bring the various arc plates (510) closer to each other.
5. The adjustable-length door catch device according to claim 4, characterized in that: The locking sleeve (600) has a stop groove (630) inside that is connected to the end of the frustum contact surface (620) away from the internal thread section (610). The arc plate (510) abuts against the bottom of the stop groove (630) to limit the locking position of the locking sleeve (600).
6. The adjustable-length door catch device according to claim 3, characterized in that: The inner sleeve (400) is provided with an anti-detachment protrusion ring (410) at the end away from the ball head (300). The diameter of the anti-detachment protrusion ring (410) matches the inner diameter of the outer sleeve (500) so that it can abut against the inner peripheral wall of the truncated cone slope section (530) to prevent the inner sleeve (400) from detaching from the outer sleeve (500).
7. The adjustable-length door catch device according to claim 2, characterized in that: The mounting base (100) includes a mounting plate (110) and a decorative cover (120). The mounting plate (110) has a plurality of through holes (111). The decorative cover (120) is detachably connected to the mounting plate (110) and can cover the through holes (111). The outer sleeve (500) is fixed to the decorative cover (120), and the inner sleeve (400) has one end away from the ball head (300) facing the mounting plate (110).
8. The adjustable-length door catch device according to claim 2, characterized in that: The inner sleeve (400) has a connecting seat (700) inside at the end away from the mounting base (100). The connecting seat (700) is provided with a bolt (800) extending along the length direction of the inner sleeve (400). The ball head (300) is provided with a threaded channel (310) that mates with the bolt (800).
9. A door catch device with adjustable length according to claim 8, characterized in that: The inner sleeve (400) has a constricted tube portion (420) formed at one end away from the mounting base (100). The connecting seat (700) is movably disposed inside the inner sleeve (400). When the bolt (800) is tightened into the threaded channel (310), it drives the connecting seat (700) to abut against the inner wall of the constricted tube portion (420) and drives the spherical surface of the ball head (300) to abut against the opening of the constricted tube portion (420).
10. A door catch device with adjustable length according to claim 9, characterized in that: The constricted tube section (420) is a frustum sleeve that gradually narrows toward the ball head (300). The connecting seat (700) is a frustum made of soft material. A clearance hole (710) is provided through the middle of the frustum for the bolt (800) to pass through. The outer peripheral wall of the frustum can be tightly fitted with the inner peripheral wall of the frustum sleeve.