阅读说明：本技术 一种防脱落楔形锁紧装置 (Anti-drop wedge locking device ) 是由 吕召会 张梁娟 刘家华 于 2020-07-03 设计创作，主要内容包括：本发明公开了一种防脱落楔形锁紧装置,涉及工业设计领域,具体包括内导轨和安装在内导轨上的第一节楔形块、第二节楔形块以及第三节楔形块,所述内导轨为楔形锁紧装置的主体,截面类似工字型,上下宽中间窄,内导轨的顶部依次滑动安装有第一节楔形块、第二节楔形块和第三节楔形块,第一节楔形块、第二节楔形块和第三节楔形块的内部均开设有T型槽,内导轨的顶部卡入第一节楔形块、第二节楔形块和第三节楔形块开设的T型槽内,且第一节楔形块的侧面通过锁紧螺钉与内导轨固定连接,第三节楔形块通过弹性圆柱销与内导轨固定连接。本发明在实施过程中,结构简单,易于加工,同时解决了普通楔形锁紧装置第一节楔形块在解锁时易脱落的问题。(The invention discloses an anti-falling wedge-shaped locking device, which relates to the field of industrial design and specifically comprises an inner guide rail, and a first section of wedge-shaped block, a second section of wedge-shaped block and a third section of wedge-shaped block which are arranged on the inner guide rail, wherein the inner guide rail is a main body of the wedge-shaped locking device, the cross section of the inner guide rail is similar to an I shape, the upper part and the lower part of the inner guide rail are wide, the middle part of the inner guide rail is narrow, the top of the inner guide rail is sequentially provided with the first section of wedge-shaped block, the second section of wedge-shaped block and the third section of wedge-shaped block in a sliding mode, T-shaped grooves are formed in the first section of wedge-shaped block, the second section of wedge-shaped block and the third section of wedge-shaped block, the top of the inner guide rail is clamped into the T-shaped grooves formed in the first. In the implementation process, the wedge-shaped locking device is simple in structure and easy to process, and simultaneously solves the problem that the first section of wedge-shaped block of the common wedge-shaped locking device is easy to fall off during unlocking.)

1. An anti-drop wedge locking device comprises an inner guide rail (1), and a first section of wedge block (2), a second section of wedge block (3) and a third section of wedge block (4) which are arranged on the inner guide rail (1), and is characterized in that the inner guide rail (1) is a main body of the wedge locking device, the cross section of the main body is similar to an I shape, the upper and lower sections of wedge block are wide and narrow, a first section of wedge block (2), a second section of wedge block (3) and a third section of wedge block (4) are sequentially and slidably arranged on the top of the inner guide rail (1), T-shaped grooves are respectively formed in the first section of wedge block (2), the second section of wedge block (3) and the third section of wedge block (4), the top of the inner guide rail (1) is clamped into the T-shaped grooves formed in the first section of wedge block (2), the second section of wedge block (3) and the third section of wedge block (4), and the side surface of the first section of wedge block (2) is fixedly connected with the inner, the third section of wedge-shaped block (4) is fixedly connected with the inner guide rail (1) through an elastic cylindrical pin (6).

2. An anti-drop wedge locking device as claimed in claim 1, characterized in that the joint of the locking screw (5) and the inner rail (1) is sleeved with an elastic pad and a flat pad.

3. The anti-falling wedge-shaped locking device according to claim 1, wherein the inner guide rail (1) mainly comprises a guide rail body (11), a round hole (12), a screw hole (13), a countersunk head through hole (14), a groove (15) and a threaded hole (16), the side surface of one end of the guide rail body (11) is provided with the threaded hole (16) along the axial direction, the depth of the threaded hole (16) is greater than the length of the locking screw (5), one end of the guide rail body (11) is provided with the groove (15), the width of the groove (15) is greater than the length of the head thread of the locking screw (5), the depth of the groove (15) completely cuts off the threaded hole (16), two screw holes (13) are processed upwards in the middle of the guide rail body (11) from the bottom surface, two countersunk head through holes (14) are processed on the edges of the screw holes (13), and the countersunk heads of the countersunk, the other end of the guide rail body (11) is processed with a round hole (12), and the round hole (12) is used for installing the elastic cylindrical pin (6).

4. The anti-falling wedge-shaped locking device according to claim 1, wherein the first section of wedge-shaped block (2) is mainly composed of a first wedge-shaped block body (21) and a screw hole (22), a T-shaped groove used for being clamped at the top of the inner guide rail (1) is formed in the bottom of the first wedge-shaped block body (21), the T-shaped groove can slide along the axis direction of the inner guide rail (1), one side end face of the first wedge-shaped block body (21) is closed, the other side end face of the first wedge-shaped block body (21) is a wedge face, and the screw hole (22) matched with the locking screw (5) is formed in the end face of the first wedge-shaped block body, so that the wedge-shaped block body (21) can be conveniently fixed on the inner guide rail (1) through the locking.

5. The anti-falling wedge-shaped locking device according to claim 1, wherein a T-shaped groove used for being clamped at the top of the inner guide rail (1) is formed in the second section of wedge-shaped block (3) and can slide along the axis direction of the inner guide rail (1), the end faces of two sides of the second section of wedge-shaped block (3) are both wedge-shaped inclined planes, an obtuse angle is formed between the inclined planes and the bottom surface of the second section of wedge-shaped block (3), the angle is complementary to the angle of the open end of the first section of wedge-shaped block (2), and the two sides of the second section of wedge-shaped block (3) are symmetrical.

6. The anti-falling wedge-shaped locking device according to claim 1, wherein the third section of wedge-shaped block (4) comprises a third section of wedge-shaped block body (41) and a pin hole (42), a T-shaped groove clamped at the top of the inner guide rail (1) is formed in the third section of wedge-shaped block body (41) and can slide along the axial direction of the inner guide rail (1), two sides of the third section of wedge-shaped block body (41) are both open, one side of the third section of wedge-shaped block body (41) facing the second section of wedge-shaped block (3) is provided with an inclined surface which is matched with the inclined surfaces of the end surfaces at two sides of the second section of wedge-shaped block (3), the other side of the third section of wedge-shaped block body (41) is a vertical side surface, the pin hole (42) is formed in the position of the third section of wedge-shaped block body (41) corresponding to the elastic cylindrical pin (6), and the position of the hole center of the pin, and the aperture of the pin hole (42) is larger than the diameter of the elastic cylindrical pin (6).

7. The anti-falling wedge-shaped locking device according to claim 1, characterized in that two wedge-shaped blocks are additionally arranged between the second section of wedge-shaped block (3) and the third section of wedge-shaped block (4), namely a fourth section of wedge-shaped block (7) and a fifth section of wedge-shaped block (8), the structure of the fifth section of wedge-shaped block (8) is the same as that of the second section of wedge-shaped block (3), a T-shaped groove used for being clamped at the top of the inner guide rail (1) is formed in the fourth section of wedge-shaped block (7), two ends of the fourth section of wedge-shaped block (7) are opened and are arranged to be inclined planes, the inclined planes are matched with the inclined planes of the second section of wedge-shaped block (3) and are complementary angles, and the inclined planes at two sides of the fourth section of wedge-shaped.

8. The anti-drop wedge locking device according to claim 1, wherein the surfaces of the inner guide rail (1), the first section of wedge block (2), the second section of wedge block (3), the third section of wedge block (4), the fourth section of wedge block (7) and the fifth section of wedge block (8) are subjected to mechanical polishing and passivation treatment.

Technical Field

The invention relates to the field of industrial design, in particular to an anti-falling wedge-shaped locking device.

Background

At present, a wedge-shaped locking device is widely used in the electronic product industry, and is used for connecting a printed board or an electronic unit module with a case, the locking device is used for quickly locking and unlocking to realize the quick replacement of a replaceable unit, and meanwhile, the wedge-shaped locking device is used for transferring the heat of the electronic unit to the case, so that the stable and reliable work of electronic equipment is ensured. The wedge-shaped locking device widely used at present is designed and manufactured according to military standard SJ20382-2007 specification of wedge-shaped locking device in the electronic industry of the people's republic of China.

SJ20382-2007 specification of wedge-shaped locking devices clearly defines the appearance, structure and main size of the locking device, and the main components of the locking device are composed of a sliding block 1, a sliding block 2, a sliding block 3, a sliding seat, a reed, a screw, a nut and a washer, and all the parts are assembled on the screw in sequence. This form of locking mechanism, which is gradually exposed during use, has the following disadvantages:

when the locking mechanism is unlocked, the tail end wedge block can rotate along with the screw, so that the module is blocked in the case;

the wall thickness of the joint of the locking mechanism and the module is about 1.5mm, and thread slipping is easily caused when the locking mechanism is fixed by a screw;

the locking screw head meets the size requirement of the head of an M3 screw in GB/T70.1, the material is 1Cr18Ni9Ti, and a hexagonal hole of the screw head is easy to wear in the using process, so that a matched tool is rotated and cannot be detached;

in the using process, the phenomena of failure such as falling off of a tail nut, pulling out of a tail wedge-shaped block steel wire thread sleeve and the like occur to different degrees.

At present, some improved wedge-shaped locking devices exist in the market, but due to the fact that the structural characteristics of the improved wedge-shaped locking devices are more or less insufficient, the increasingly severe requirements of the electronic industry on the use environment are difficult to meet.

The "wedge-shaped locking device" disclosed in chinese patent CN201410434240, in which the central rod and the first wedge-shaped block are integrally formed, is difficult to process; the rear end of the central rod is locked by a common screw, and the screw is not limited in the unlocking process, so that a rear end wedge block is easy to fall off; the locking screw directly acts on the wedge-shaped block, has no anti-loosening measure, and is easy to cause the loosening of the screw thread in a vibration environment to cause locking failure.

The anti-drop block of the 'wedge locker of a positive and negative wire transmission locking mode' disclosed in the chinese patent CN201910169365 is fixedly connected with the end part of the trunk groove body, and due to the structural characteristics of the anti-drop block, the connection strength of the anti-drop block and the trunk groove body is difficult to guarantee, and once the anti-drop block is loosened when bearing the locking force of the screw, the sliding wedge block drops from the trunk groove body, so that the locking is disabled. In addition, the heat conduction filling layer is filled in the cavity inside the wedge-shaped locker, the wedge-shaped locker is not suitable for being installed and used in the opposite direction (namely the opening of the trunk groove body is downward), otherwise, the internal filler is easy to fall off and leak after repeated actions of locking and unlocking the screw, and the application of the wedge-shaped locker is limited to a certain extent.

The wedge-shaped locking device on the market is installed by tapping a threaded hole on the locking device and screwing a screw into the locking device from a printed board (or a module) for installation. The module can only be used for tapping, and the installation mode is single.

Disclosure of Invention

The invention aims to provide an anti-falling wedge-shaped locking device, which solves the problems that the conventional wedge-shaped locking device is easy to block, threads slide, locking screws slide and the like, is difficult to adapt to increasingly severe vibration impact and other use environments, can replace a locking device meeting the requirements of SJ20382-2007 'wedge-shaped locking device specification' in situ, and has high practical value and market popularization prospect.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides an anti-drop wedge locking device, includes first section wedge, second section wedge and third section wedge on inner guide rail and the installation inner guide rail, the inner guide rail is wedge locking device's main part, and the similar I shape in cross-section is narrow in the middle of the upper and lower width, and slidable mounting has first section wedge, second section wedge and third section wedge in proper order at the top of inner guide rail, and T type groove has all been seted up to the inside of first section wedge, second section wedge and third section wedge, and first section wedge is gone into to the top card of inner guide rail, the T type inslot that second section wedge and third section wedge seted up, and the side of first section wedge passes through locking screw and inner guide rail fixed connection, and the third section wedge passes through elasticity cylindric lock and inner guide rail fixed connection.

As a further scheme of the invention: and the joint of the locking screw and the inner guide rail is sleeved with an elastic pad and a flat pad.

As a further scheme of the invention: the inner guide rail mainly comprises a guide rail body, a round hole, screw holes, countersunk head through holes, a groove and a threaded hole, wherein the threaded hole is formed in one end side face of the guide rail body along the axis direction, the depth of the threaded hole is larger than the length of a locking screw, the groove is formed in one end of the guide rail body, the width of the groove is larger than the thread length of the head of the locking screw, the threaded hole is completely cut off by the depth of the groove, two screw holes are processed upwards in the middle of the guide rail body from the bottom surface, two countersunk head through holes are processed on the edge of the screw hole, the countersunk head of each countersunk head through hole is arranged on the top surface.

As a further scheme of the invention: first section wedge mainly comprises first wedge body and screw hole, and the T type groove that is used for the card at inner guide rail top is seted up to the bottom of first wedge body, can slide along the axis direction of inner guide rail, and a side end face of first wedge body seals, and the opposite side terminal surface of first wedge body is established to the wedge face, offers the screw hole that matches with locking screw on the terminal surface to conveniently fix the wedge body on the inner guide rail through locking screw.

As a further scheme of the invention: the T-shaped groove that is used for the joint including guide rail top is seted up to the inside of second festival wedge, and can slide along the axis direction of interior guide rail, and wedge-shaped inclined plane is all established to the both sides terminal surface of second festival wedge, becomes the obtuse angle with the bottom surface of second festival wedge, and this angle and the open end angle of first festival wedge are each other for supplementary angle, the bilateral symmetry of second festival wedge.

As a further scheme of the invention: the third section wedge includes third section wedge body and pinhole, the inside of third section wedge body is offered and is used for the T type groove at inner rail top of blocking, can slide along the axis direction of inner rail, the both sides of third section wedge body are all opened, third section wedge body is established to the inclined plane towards one side of second section wedge, should agree with the inclined plane of second section wedge both sides terminal surface, the opposite side of third section wedge body is vertical side, the pinhole has been seted up to the position that third section wedge body corresponds the elasticity cylindric lock, the round hole of seting up on the position of pinhole hole heart and the guide rail body is concentric, and the aperture of pinhole is greater than the diameter of elasticity cylindric lock.

As a further scheme of the invention: two wedge blocks are additionally arranged between the second section of wedge block and the third section of wedge block and are respectively a fourth section of wedge block and a fifth section of wedge block, the structure of the fifth section of wedge block is the same as that of the second section of wedge block, a T-shaped groove used for being clamped at the top of the inner guide rail is formed in the fourth section of wedge block, two ends of the fourth section of wedge block are opened and are arranged into an inclined plane, the inclined plane is matched with the inclined plane of the second section of wedge block and is a complementary angle, and the inclined planes on two sides of the fourth section of wedge block are symmetrical.

As a further scheme of the invention: the surfaces of the inner guide rail, the first section of wedge-shaped block, the second section of wedge-shaped block, the third section of wedge-shaped block, the fourth section of wedge-shaped block and the fifth section of wedge-shaped block are subjected to mechanical polishing and passivation treatment.

Compared with the prior art, the invention has the beneficial effects that: the invention has simple structure and easy processing, and the installation and operation method can completely replace the locking device which meets the requirement of SJ20382-2007 'Specification of wedge-shaped locking devices';

in addition, the invention also mainly solves the problem that the first section of wedge-shaped block of the common wedge-shaped locking device is easy to fall off when unlocking; the mounting mode of the countersunk head screw and the countersunk head rivet is added on the basis of the original mounting mode of the threaded hole, so that the applicability of the mounting mode is wider; the improved I-shaped inner guide rail structure has strength obviously superior to that of a common wedge-shaped locking device, and simultaneously, the contact area between the improved I-shaped inner guide rail structure and an electronic unit module is increased, so that the improved I-shaped inner guide rail structure is more favorable for module heat dissipation.

The technical scheme provided by the invention can be suitable for the quick connection between the printed board or the module and the case in the military and civil fields of most electronic industries, has simple and reliable structure and low cost, and has higher practical value and market popularization prospect.

Drawings

Fig. 1 is a bottom view of an anti-drop wedge locking device in accordance with embodiment 1.

Fig. 2 is a front view of an anti-drop wedge locking device embodiment 1.

Fig. 3 is a left side view of an anti-drop wedge lock device embodiment 1.

Fig. 4 is a perspective view of an inner rail in an anti-drop wedge locking device.

Fig. 5 is a perspective view of a first section of wedge block in the anti-falling wedge locking device.

Fig. 6 is a perspective view of a second section wedge block in the anti-falling wedge locking device.

Fig. 7 is a perspective view of a third section of wedge block in the anti-drop wedge locking device.

Fig. 8 is a front view of embodiment 2 of an anti-drop wedge lock device.

Fig. 9 is a perspective view of a fourth section of wedge block in the anti-drop wedge locking device.

As shown in the figure: the guide rail comprises an inner guide rail 1, a guide rail body 11, a round hole 12, a screw hole 13, a countersunk through hole 14, a groove 15, a threaded hole 16, a first section of wedge-shaped block 2, a first wedge-shaped block body 21, a screw hole 22, a second section of wedge-shaped block 3, a third section of wedge-shaped block 4, a third section of wedge-shaped block body 41, a pin hole 42, a locking screw 5, an elastic cylindrical pin 6, a fourth section of wedge-shaped block 7 and a fifth section of wedge-shaped block 8.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.