Dustproof barrel for bolt hole

Abstract

The utility model discloses a dustproof cylinder for a bolt hole, which comprises a cylinder body provided with a first end and a second end which are opposite to each other, the cylinder body can extend into the bolt hole from the first end, and the second end is flush with a working surface; the dustproof plunger is arranged in the barrel body; the barrel is provided with a cavity allowing the dustproof plunger to slide, the peripheral wall of the dustproof plunger is attached to the inner wall of the cavity, and the dustproof plunger can slide to the second end and is flush with the end face of the second end. According to the utility model, when the bolt retreats, the dustproof plunger slides upwards along the cavity to be flush with the ground, so that impurities such as dust are prevented from entering the bolt hole.

Description

Technical Field

[0001] The utility model relates to the technical field of outdoor equipment, in particular to a dustproof cylinder for a pin hole. Background Art

[0002] Some door locks are in the form of ground locks. A latch hole is opened on the ground, a latch is installed on the door, the door is moved until the latch is aligned with the latch hole, and the latch is inserted into the latch hole to lock the door.

[0003] However, such a locking structure has the following defects: the latch hole is always exposed to the outside and communicates with the outside world, and dust and other debris from the outside will enter the latch hole and block the latch hole, causing the depth of the latch hole to decrease, thereby causing the latch to be unable to fully extend into the latch hole, making it impossible to lock the latch. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to propose a dustproof cylinder for a pin hole, so as to solve the problem that dust and other impurities in the prior art easily enter the pin hole and cause the pin hole to be blocked.

[0005] The utility model solves the technical problem by adopting a technical solution which is a dustproof cylinder for a pin hole, comprising:

[0006] A cylinder having a first end and a second end which are opposite to each other, wherein the cylinder can be inserted into the pin hole from the first end and the second end is flush with the working surface;

[0007] A dustproof plunger, which is disposed in the cylinder;

[0008] The cylinder has a cavity allowing the dust-proof plunger to slide, the peripheral wall of the dust-proof plunger is in contact with the inner wall of the cavity, and the dust-proof plunger can slide to the second end and be flush with the end surface of the second end.

[0009] Furthermore, a return spring is provided in the cylinder, one end of the return spring abuts against the bottom of the cavity, and the other end of the return spring abuts against the dustproof plunger.

[0010] Furthermore, a mounting plate is provided, which has a plurality of mounting holes for fixing the mounting plate on a working surface, and a center hole is also provided on the mounting plate; the cylinder can extend into the center hole and make the second end flush with the surface of the mounting plate.

[0011] Furthermore, a connecting section is provided at one end of the dustproof plunger away from the cavity, and a radius of the connecting section is smaller than a radius of the dustproof plunger;

[0012] It also includes a limiting plate, which is provided with a limiting hole allowing the connecting section to extend therein, and a radius of the limiting hole is smaller than a radius of the dustproof plunger.

[0013] Furthermore, a step surface is formed at the connection between the connecting section and the dustproof plunger, and the step surface can abut against the limit plate. When the step surface abuts against the limit plate, the end surface of the limit plate away from the mounting plate is flush with the end surface of the connecting section away from the cavity.

[0014] Furthermore, the limiting plate is provided with a plurality of through holes for being bolted to the mounting plate.

[0015] Furthermore, the cylinder includes a first embedded section and a second embedded section, and the first end is located at an end of the first embedded section away from the second embedded section; the radius of the first embedded section is smaller than the radius of the second embedded section to form a limiting surface at the connection between the first embedded section and the second embedded section.

[0016] Compared with the prior art, the utility model has at least the following beneficial effects:

[0017] The dustproof cylinder includes a cylinder body and a dustproof plunger that can slide up and down in the cylinder body. The cylinder body is installed in the latch hole. At this time, the upper end (i.e., the second end) of the cylinder body and the upper surface of the dustproof plunger are flush with the ground, which will not affect the opening and closing of the door. When the latch is inserted into the latch hole, the latch can slide down along the cavity against the dustproof plunger until the latch is fully inserted; when the latch is retracted, the dustproof plunger slides up along the cavity until it is flush with the ground to prevent dust and other impurities from entering the latch hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the dustproof cylinder in the embodiment;

[0019] Figure 2 It is a schematic diagram of the structure of the cylinder and the dustproof plunger in the embodiment;

[0020] Figure 3 It is a schematic diagram of the structure of the dustproof plunger and the connecting section in the embodiment;

[0021] In the figure:

[0022] 100, cylinder; 110, first embedded section; 120, second embedded section; 130, limiting surface;

[0023] 200, mounting plate;

[0024] 300, limit plate;

[0025] 400, dustproof plunger; 410, connecting section; 420, step surface. DETAILED DESCRIPTION

[0026] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0027] Please refer to Figure 1-Figure 3 The utility model discloses a dustproof cylinder for a pin hole, comprising:

[0028] A cylinder 100 having a first end and a second end which are opposite to each other, wherein the cylinder 100 can be inserted into the pin hole from the first end and the second end is flush with the working surface;

[0029] A dustproof plunger 400, which is disposed in the cylinder 100;

[0030] The barrel 100 has a cavity that allows the dust-proof plunger 400 to slide. The peripheral wall of the dust-proof plunger 400 fits with the inner wall of the cavity, and the dust-proof plunger 400 can slide to the second end and be flush with the end surface of the second end.

[0031] Specifically, the dustproof cylinder of the present application includes a cylinder body 100 and a dustproof plunger 400 that can slide up and down in the cylinder body 100. The cylinder body 100 is installed in the latch hole. At this time, the upper end (i.e., the second end) of the cylinder body 100 and the upper surface of the dustproof plunger 400 are flush with the ground, which will not affect the opening and closing of the door. When the latch is inserted into the latch hole, the latch can slide downward along the cavity against the dustproof plunger 400 until the latch is fully inserted; when the latch is retracted, the dustproof plunger 400 slides upward along the cavity until it is flush with the ground to prevent dust and other impurities from entering the latch hole.

[0032] Furthermore, a return spring is provided in the cylinder 100 , one end of the return spring abuts against the bottom of the cavity, and the other end of the return spring abuts against the dustproof plunger 400 .

[0033] Specifically, a return spring is provided, and when the latch is extended, the return spring can be pressed against the dustproof plunger 400, and when the latch is retracted, the dustproof plunger 400 is returned upward under the elastic force of the return spring.

[0034] Furthermore, a mounting plate 200 is provided, which has a plurality of mounting holes for fixing the mounting plate 200 on a work surface, and a center hole is also provided on the mounting plate 200; the cylinder 100 can extend into the center hole and make the second end flush with the surface of the mounting plate 200.

[0035] A mounting plate 200 is provided to be connected to the cylinder 100 , and the mounting plate 200 is fixed to the ground to enhance the stability of the cylinder 100 .

[0036] Furthermore, a connecting section 410 is further provided at one end of the dustproof plunger 400 away from the cavity, and a radius of the connecting section 410 is smaller than a radius of the dustproof plunger 400;

[0037] The device further comprises a limiting plate 300 , on which a limiting hole is formed for allowing the connecting section 410 to extend therein, and a radius of the limiting hole is smaller than a radius of the dustproof plunger 400 .

[0038] A limit plate 300 is provided, and when the dustproof plunger 400 is reset upward, it can abut against the limit plate 300 , and the limit plate 300 can limit the dustproof plunger 400 from continuing to move upward and escape from the cavity.

[0039] Furthermore, a step surface 420 is formed at the connection between the connecting section 410 and the dustproof plunger 400, and the step surface 420 can abut against the limiting plate 300, and when the step surface 420 abuts against the limiting plate 300, the end surface of the limiting plate 300 away from the mounting plate 200 is flush with the end surface of the connecting section 410 away from the cavity.

[0040] Specifically, when the limiting plate 300 abuts against the step surface 420, the upper end surface of the limiting plate 300 is flush with the upper end surface of the connecting section 410, so that there is no depression between the connecting section 410 and the limiting plate 300, impurities are not easily accumulated, and impurities are prevented from entering the cavity.

[0041] Furthermore, the limiting plate 300 is provided with a plurality of through holes for being bolted to the mounting plate 200 .

[0042] Furthermore, the cylinder 100 includes a first embedded section 110 and a second embedded section 120, and the first end is located at an end of the first embedded section 110 away from the second embedded section 120; the radius of the first embedded section 110 is smaller than the radius of the second embedded section 120, so as to form a limiting surface 130 at the connection between the first embedded section 110 and the second embedded section 120.

[0043] Specifically, the radius of the first embedded section 110 in the lower part is smaller than the radius of the second embedded section 120 in the upper part, and a limiting surface 130 (step) is formed between the two embedded sections. The limiting surface 130 prevents the cylinder 100 from moving up and down, thereby enhancing the connection strength between the cylinder 100 and the pin hole.

[0044] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0045] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A dustproof cylinder for a pin hole, characterized in that: include: A cylinder having a first end and a second end which are opposite to each other, wherein the cylinder can be inserted into the pin hole from the first end and the second end is flush with the working surface; A dust-proof plunger, which is disposed in the cylinder; The cylinder has a cavity allowing the dust-proof plunger to slide, the peripheral wall of the dust-proof plunger is in contact with the inner wall of the cavity, and the dust-proof plunger can slide to the second end and be flush with the end surface of the second end.

2. A dustproof cylinder for a pin hole according to claim 1, characterized in that: A return spring is also arranged in the cylinder, one end of the return spring abuts against the bottom of the cavity, and the other end of the return spring abuts against the dustproof plunger.

3. A dustproof cylinder for a pin hole according to claim 1, characterized in that: A mounting plate is also provided, which has a plurality of mounting holes for fixing the mounting plate on a working surface, and a center hole is also provided on the mounting plate; the cylinder can extend into the center hole and make the second end flush with the surface of the mounting plate.

4. A dustproof cylinder for a pin hole according to claim 3, characterized in that: The dustproof plunger is further provided with a connecting section at one end away from the cavity, and the radius of the connecting section is smaller than the radius of the dustproof plunger; It also includes a limiting plate, which is provided with a limiting hole allowing the connecting section to extend therein, and a radius of the limiting hole is smaller than a radius of the dustproof plunger.

5. A dustproof cylinder for a pin hole according to claim 4, characterized in that: A step surface is formed at the connection between the connecting section and the dustproof plunger, and the step surface can abut against the limit plate. When the step surface abuts against the limit plate, the end surface of the limit plate away from the mounting plate is flush with the end surface of the connecting section away from the cavity.

6. A dustproof cylinder for a pin hole according to claim 4, characterized in that: The limiting plate is provided with a plurality of through holes for being connected with the mounting plate by bolts.

7. A dustproof cylinder for a pin hole according to claim 1, characterized in that: The cylinder includes a first embedded section and a second embedded section, and the first end is located at an end of the first embedded section away from the second embedded section; the radius of the first embedded section is smaller than the radius of the second embedded section to form a limiting surface at the connection between the first embedded section and the second embedded section.

Images