Hidden connecting device

Abstract

The utility model discloses a hidden connecting device, which belongs to the technical field of connecting devices and comprises a connecting part and a transmission part, the connecting part is provided with threads, and the transmission part and the connecting part are movably connected and can slide relatively but cannot rotate relatively, so that the transmission part can be rotated by applying force to drive the connecting part to rotate. The thread on the connecting part is screwed or unscrewed on a related product, the sliding direction between the transmission part and the connecting part is parallel to the axial direction of the thread, and force can be applied to press the transmission part to enable the transmission part to move towards the connecting part, so that protruding of the transmission part on the surface of the product is reduced or even eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of connection devices, in particular to a hidden connection device. Background Art

[0002] In traditional screw design, especially those that require greater torque bearing, enhanced fixing stability or are easy for people to tighten by hand, are often equipped with nuts of corresponding larger size. Although this design effectively improves the firmness and reliability of the connection, it also brings the following problems. For example, such large-volume nuts will protrude from the surface of the product after installation, which not only affects the appearance of the product and reduces the degree of design integration of the product, but also makes the protruding part of the nut very easy to contact and collide with external objects during the use or transportation of the product, causing the nut to deform and loosen, seriously affecting the safety performance and service life of the product. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a hidden connection device to solve the problem that the current nut protrudes from the product surface.

[0004] The purpose of the utility model is achieved by the following technical solutions:

[0005] A hidden connection device comprises a connection part and a transmission part;

[0006] The connecting portion has a thread;

[0007] The transmission part is slidably connected to the connecting part, the sliding direction between the transmission part and the connecting part is parallel to the axial direction of the thread, and the transmission part rotates synchronously with the connecting part.

[0008] Preferably, it further comprises a limiting assembly, wherein the limiting assembly comprises a limiting structure and a limiting block which are detachably connected to each other, wherein one of the limiting structure and the limiting block is arranged at the connecting portion, and the other is arranged at the transmission portion.

[0009] Preferably, the limiting structure comprises a limiting through hole opened in the transmission part.

[0010] Preferably, the limiting block is rotatably connected to the connecting portion.

[0011] Preferably, the outer wall surface of the limiting block is provided with a limiting groove for engaging with the limiting structure.

[0012] Preferably, the limiting assembly further comprises a steering elastic member, and two ends of the steering elastic member are respectively connected to the connecting portion and the limiting block.

[0013] Preferably, a circle of contact parts is circumferentially provided on the transmission part, and anti-slip patterns are provided on the contact parts.

[0014] Preferably, it also includes a connecting component, which includes a connecting slot and a connecting block, the connecting block is slidably embedded in the connecting slot, one of the connecting block and the connecting slot is arranged at the connecting part, and the other is arranged at the transmission part.

[0015] Preferably, a connecting elastic member is further included, and two ends of the connecting elastic member are respectively connected to the connecting portion and the transmission portion.

[0016] Preferably, the transmission part is provided with a receiving hole, and one end of the connecting part is slidably inserted into the receiving hole.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The transmission part and the connecting part are movably connected. The two can slide relative to each other but cannot rotate relative to each other. Therefore, force can be applied to rotate the transmission part and then drive the connecting part to rotate, so that the thread on the connecting part is tightened or loosened on the related product. The sliding direction between the transmission part and the connecting part is parallel to the axial direction of the thread. Force can be applied to press the transmission part to make the transmission part move toward the connecting part, so as to reduce or even eliminate the protrusion of the transmission part on the product surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the hidden connection device of the utility model;

[0020] Figure 2 It is a cross-sectional schematic diagram of the hidden connection device of the utility model;

[0021] Figure 3 It is a schematic diagram of the transmission part of the hidden connection device of the utility model in a pop-up state;

[0022] Figure 4 It is a schematic diagram of the transmission part of the hidden connection device of the utility model in the storage state;

[0023] Figure 5 It is a three-dimensional cross-sectional schematic diagram of the hidden connection device of the utility model;

[0024] In the figure: 10, connecting part; 11, thread; 12, limit block; 121, limit groove; 13, connecting block; 14, slideway; 20, transmission part; 21, limit through hole; 211, limit hole wall; 22, connecting slot hole; 23, receiving hole; 30, steering elastic part; 31, steel ball; 40, contact part; 41, anti-slip pattern; 50, connecting elastic part. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] Example 1

[0029] Combination Figure 1 and Figure 2 As shown, the hidden connection device of the present invention is schematically shown, including a connection part 10 and a transmission part 20, the connection part 10 has a thread 11, specifically, the connection part 10 has an external thread 11, and can be connected to other products or equipment through the thread 11.

[0030] The transmission part 20 is slidably connected to the connecting part 10. At the same time, the transmission part 20 and the connecting part 10 can rotate synchronously. The sliding direction between the transmission part 20 and the connecting part 10 is parallel to the axial direction of the thread 11. More specifically, the transmission part 20 and the connecting part 10 can slide relatively along a reference straight line, and the transmission part 20 and the connecting part 10 cannot rotate relatively. Therefore, when the transmission part 20 is driven to rotate around the reference straight line by the force, the connecting part 10 rotates around the reference straight line together with the transmission part 20 under the transmission of the transmission part 20.

[0031] Therefore, the external thread 11 of the connection part 10 is aligned with the internal thread 11 of the other product, and force is applied to rotate the transmission part 20 to drive the connection part 10 to rotate, so that the connection part 10 is matched with the thread 11 of the other product, and then force is applied to press the transmission part 20 to make the transmission part 20 slide relative to the connection part 10 in the direction of the connection part 10, so as to reduce or even eliminate the protrusion of the transmission part 20 on the product surface. When it is necessary to separate the connection part 10 from the above-mentioned product, it is only necessary to apply force to drive the transmission part 20 to move away from the connection part 10, so that the transmission part 20 protrudes from the product surface, so that the relevant personnel can apply force to rotate the transmission part 20, thereby driving the connection part 10 to rotate relative to the above-mentioned product.

[0032] In order to facilitate the relevant personnel to apply force to rotate the transmission part 20, a circle of contact parts 40 are arranged around the transmission part 20, and anti-skid patterns 41 are arranged on the contact parts 40. In order to improve the friction, the contact parts 40 can be made of rubber or silicone.

[0033] Example 2

[0034] Combination Figures 1 to 5 As shown, the difference between this embodiment and embodiment 1 is that the hidden connection device of the utility model further includes a limiting assembly. The limiting assembly includes a limiting structure and a limiting block 12, and the limiting block 12 can be detachably connected to the limiting structure, which means that the limiting block 12 can be connected to the limiting structure and can also be separated from the limiting structure.

[0035] Combination Figure 2 and Figure 3 , one of the limiting structure and the limiting block 12 is arranged on the connecting portion 10, and the other is arranged on the transmission portion 20. In this embodiment, the limiting structure is arranged on the transmission portion 20, and the limiting block 12 is movably connected to the connecting portion 10.

[0036] The setting of the limiting assembly can keep the transmission part 20 and the connecting part 10 in a certain state. The transmission part 20 has a storage state and an ejection state. When the transmission part 20 is in the ejection state, the transmission part 20 moves away from the connecting part 10; when the transmission part 20 is in the storage state, the transmission part 20 moves toward the connecting part 10 relative to the connecting part 10. When the transmission part 20 is in the storage state, the limiting block 12 is engaged with the limiting structure, and when the transmission part 20 needs to be switched from the storage state to the ejection state, the limiting block 12 is driven to disengage from the limiting structure to unlock, so that the transmission part 20 moves away from the connecting part 10.

[0037] Furthermore, combined with Figure 2 and Figure 5The limiting structure includes a limiting through hole 21 opened in the transmission part 20, one of the hole walls of the limiting through hole 21 is perpendicular to the above-mentioned reference straight line and is recorded as the limiting hole wall 211. When the transmission part 20 is in the storage state, the limiting block 12 is clamped on the limiting hole wall 211. The limiting block 12 is rotatably connected to the connecting part 10, and the outer wall surface of the limiting block 12 is provided with a limiting groove 121, and the inner wall of the limiting groove 121 is clamped on the limiting hole wall 211 when the transmission part 20 is in the storage state. The transmission part 20 has an inner cavity, and the limiting through hole 21 connects the inner cavity with the outside. The limiting groove 121 has two inner wall surfaces. When the transmission part 20 is in the storage state, one of the inner wall surfaces of the limiting groove 121 is clamped on the limiting hole wall 211, and the other inner wall surface of the limiting groove 121 abuts on the inner side wall of the inner cavity, so that the limiting block 12 is stably clamped on the limiting structure. The hidden connection device further includes a connection elastic member 50, both ends of which are respectively connected to the connection portion 10 and the transmission portion 20. When the transmission portion 20 is in the storage state, the connection elastic member 50 is in a compressed state.

[0038] In this state, the relevant personnel can press the transmission part 20 with their hands to make the transmission part 20 move further toward the connecting part 10, and the other hole wall in the limiting through hole 21 that is arranged opposite to the limiting hole wall 211 will squeeze the limiting block 12 and make the limiting block 12 rotate relative to the connecting part 10, which makes it impossible for the limiting groove 121 on the limiting block 12 to be engaged with the limiting hole wall 211. At this time, the relevant personnel releases the transmission part 20, and the transmission part 20 moves away from the connecting part 10 under the elastic force of the connecting elastic member 50.

[0039] like Figure 3 and Figure 4 In order to facilitate the reset of the limit block 12, the limit assembly also includes a steering elastic member 30, which is preferably a spring. The two ends of the steering elastic member 30 are respectively connected to the connecting portion 10 and the limit block 12, wherein one end of the steering elastic member 30 is connected to the connecting portion 10, and the other end of the steering elastic member 30 is provided with a steel ball 31, which abuts against the outer wall surface or the limit groove 121 of the limit block 12. When the limit block is squeezed by the limit through hole 21 and rotates relative to the connecting portion 10, the rotation of the limit block 12 forces the steering elastic member 30 to be compressed. When the transmission part 20 has switched from the storage state to the pop-up state, the steering elastic member 30 stretches and recovers and drives the limit block 12 to rotate relative to the connecting portion 10 to reset. In addition, in order to make the steel ball 31 move on a certain straight line, the connecting portion 10 is provided with a slideway 14, and at least one side of the steel ball 31 is embedded in the slideway 14, so that the steel ball 31 can move along the slideway 14.

[0040] Example 3

[0041] like Figure 1, the difference between this embodiment and embodiment 1 is that the hidden connection device further includes a connection assembly, the connection assembly includes a connection slot 22 and a connection block 13, and the connection block 13 is slidably embedded in the connection slot 22. One of the connection block 13 and the connection slot 22 is provided at the connection part 10, and the other is provided at the transmission part 20. Based on the design of the connection slot 22 and the connection block 13, a sliding but non-rotatable connection between the connection part 10 and the transmission part 20 can be achieved. In this embodiment, the connection block 13 is provided at the connection part 10, and the connection slot 22 is provided at the transmission part 20. In order to maintain balance, the connection slots 22 are provided on both sides of the transmission part 20, and similarly, the connection blocks 13 are also provided on both sides of the connection part 10.

[0042] Furthermore, if Figure 2 The transmission part 20 is provided with a receiving hole 23 , and one end of the connecting part 10 can be slidably inserted into the receiving hole 23 , that is, the transmission part 20 can be slidably sleeved on one end of the connecting part 10 .

[0043] Example 4

[0044] The difference between this embodiment and embodiment 2 is that the steering elastic member 30 is preferably a torsion spring, which can also realize the rotational reset of the limit block 12 .

[0045] To sum up, the transmission part 20 and the connecting part 10 are movably connected, and the two can slide relative to each other but cannot rotate relative to each other. Therefore, force can be applied to rotate the transmission part 20 and then drive the connecting part 10 to rotate, so that the thread 11 on the connecting part 10 is tightened or loosened on the relevant product. The sliding direction between the transmission part 20 and the connecting part 10 is parallel to the axial direction of the thread 11. Force can be applied to press the transmission part 20 to make the transmission part 20 move toward the connecting part 10, so as to reduce or even eliminate the protrusion of the transmission part 20 on the product surface.

[0046] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hidden connection device, characterized in that: It includes a connecting part and a transmission part; The connecting portion has a thread; The transmission part is slidably connected to the connecting part, the sliding direction between the transmission part and the connecting part is parallel to the axial direction of the thread, and the transmission part rotates synchronously with the connecting part.

2. The hidden connection device according to claim 1, characterized in that: It also includes a limiting assembly, which includes a limiting structure and a limiting block that are detachably connected to each other, one of the limiting structure and the limiting block is arranged on the connecting part, and the other is arranged on the transmission part.

3. The hidden connection device according to claim 2, characterized in that: The limiting structure includes a limiting through hole opened in the transmission part.

4. The hidden connection device according to claim 2, characterized in that: The limiting block is rotatably connected to the connecting portion.

5. The hidden connection device according to claim 2, characterized in that: The outer wall surface of the limiting block is provided with a limiting groove for engaging with the limiting structure.

6. The hidden connection device according to claim 4, characterized in that: The limiting assembly further comprises a steering elastic member, and two ends of the steering elastic member are respectively connected to the connecting portion and the limiting block.

7. The hidden connection device according to claim 1, characterized in that: A circle of contact parts is circumferentially arranged on the transmission part, and anti-slip lines are arranged on the contact parts.

8. The hidden connection device according to any one of claims 1 to 7, characterized in that: It also includes a connecting component, which includes a connecting slot and a connecting block. The connecting block is slidably embedded in the connecting slot. One of the connecting block and the connecting slot is arranged on the connecting part, and the other is arranged on the transmission part.

9. The hidden connection device according to any one of claims 1 to 8, characterized in that: It also includes a connecting elastic member, two ends of which are respectively connected to the connecting portion and the transmission portion.

10. The concealed connection device according to any one of claims 1 to 9, characterized in that: The transmission part is provided with a receiving hole, and one end of the connecting part is slidably inserted into the receiving hole.

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