KR102352874B1 - Cover for bumper sensor - Google Patents

Abstract

The present invention relates to a cover for a bumper sensor, and a bumper sensor on which a base frame 111 installed on a vehicle body, a tape switch 112 mounted on the front of the base frame 111, and a buffer unit 113 are mounted. In the cover for a bumper sensor provided to cover the exterior of the, the covering portion 121 provided to cover the base frame 111 to the buffer portion 113 integrally by forming a sheet made of a synthetic resin material having elasticity and thermoplasticity. ), and the first to third joint portions 122 to 124 that overlap and bond the ends of the covering portion 121 on the rear surface of the base frame 111 and on both sides of the buffer portion 113, respectively, and; First and second end caps 125 and 126 for accommodating both ends of the bumper sensor covered with the covering portion 121 to close the edges of the second and third bonding portions 123 and 124 and the covering portion 121 . It is characterized by having various functionalities such as sealing properties and high durability compared to the conventional sewing-type cover according to the configuration including the.

Description

Cover for bumper sensor {COVER FOR BUMPER SENSOR}

The present invention relates to a cover for a bumper sensor, and more particularly, a cover for forming an outer shell of a bumper sensor that is installed on the bumper of various industrial unmanned vehicles and systems to prevent damage from external impact and secure the safety of workers. It relates to a cover for a bumper sensor having sealing properties and high durability by configuring it in a form different from that of a conventional sewing cover.

In general, a bumper for a vehicle is mounted on the front and rear of a vehicle body to absorb a shock in the event of a collision. In the past, steel bumpers were the mainstay, but in recent years, shock-absorbing bumpers are used to enhance safety.

As the material of the shock-absorbing bumper, synthetic resin such as urethane, which has excellent cushioning and restoring power, is used as the main material.

On the other hand, bumper sensors are installed in various industrial transport vehicles and systems such as AGV, LGV, and RGV, EMS, and Stocker to ensure safety through shock detection while performing a buffer function in case of external contact or collision.

A schematic view of the configuration of a typical bumper sensor includes a frame mounted on a vehicle body, a buffer part mounted on the front of the frame to absorb shock, and a tape switch built into the buffer part to detect an impact.

As an example of a conventionally known technology, Korean Patent Registration No. 10-1392992 discloses an unmanned transport cart including first and second bumper switches that absorb shock and block the operation of the driving unit when a collision occurs. ,2 The bumper switch is installed so that the base installed on the front and rear sides of the cart body, the cushion separating end installed to be spaced apart from the edge of the base, the tape switch installed between the cushion separating end, and the tape switch being built-in at the cushion separating end It consists of a bumper that becomes

As another example, in Korea Utility Model No. 20 - 0098576, a backup plate is attached so that a piezoelectric sensor can be attached to the surface of the base plate of a lightweight material, and an elastic rubber that adheres both sides between the base plate and the corresponding sensitive plate. It consists of a bumper device for an unmanned transport vehicle that attaches a cushioning material such as foamed sponge to the outer surface of the sensitive plate, and bonds the entire soft synthetic resin-based outer skin to the back of the base plate using staples. .

As another example, Korean Patent Registration No. 10-0584676 discloses a metal plate to which a file sensor is attached, a file sensor mounted in the center of the metal plate, an elastic member mounted on the upper and lower portions of the metal plate, and a constant file sensor The distance is maintained and the plastic plate mounted in contact with the elastic member, the cushioning member mounted in contact with the plastic plate, and the file sensor are attached to the back of the metal plate to relieve the impact pressure applied to the attached metal plate. A bumper device for an unmanned transport vehicle is configured, which includes an attached elastic rubber plate, an outer skin covering and surrounding the outer skin of the bumper device, and a bumper cover surrounding the outer skin.

On the other hand, as shown in Fig. 6, the conventional cover for a bumper sensor 10 is configured to be formed by cutting and sewing a fabric made of a plastic inner magnetic material to fit the outer shape of the bumper sensor.

Korean Patent Registration No. 10-1392992 (2014.05.08) Korea Registered Utility Model No. 20 - 0098576 (1996.02.21) Korea Patent No. 10 - 0584676 (2006.05.29) Korean Patent Laid-Open Patent No. 10 - 2009 - 0108882 (2009.10.19)

The cover for a bumper sensor to which the prior art is applied covers the outer shape of the bumper sensor in which the frame, the buffer unit, and the tape switch are combined, for example, the cover 10 according to the prior art as shown in FIG. Since it is configured to be formed by sewing, there is a problem in that the manufacturing process is very cumbersome and productivity is low.

In particular, in the case of the conventional cover for a bumper sensor, when an external impact is repeatedly applied to the bumper sensor, the phenomenon in which the seam 11 easily bursts frequently occurs.

In addition, as the seam line of the cover ruptures, the built-in buffer part easily ruptures or foreign substances scatter, causing secondary damage that pollutes the work environment. Due to the possibility of contamination according to the use of the sensor, it is practically impossible to use, and there is a disadvantage in that the target of the application is significantly reduced.

In addition, since the conventional sewing cover cannot completely seal the sewing part, in the case of a work site with high humidity or dust, there is another problem in that it flows into the inside of the bumper sensor and causes various malfunctions and failures.

Accordingly, the present invention was invented to solve the problems of the prior art as described above,

The base frame 111 installed on the vehicle body, the tape switch 112 mounted on the front of the base frame 111, and the bumper sensor cover provided to cover the exterior of the bumper sensor mounted with the buffer unit 113. in,

A covering portion 121 formed on a sheet made of a synthetic resin material having elasticity and thermoplasticity to cover the base frame 111 to the buffer portion 113 integrally;

First to third junctions 122 to 124 for overlapping and bonding the ends of the covering part 121 on the rear side of the base frame 111 and on both sides of the buffer part 113, respectively;

First and second end caps 125 and 126 for accommodating both ends of the bumper sensor covered with the covering portion 121 to close the edges of the second and third bonding portions 123 and 124 and the covering portion 121 . ), including

The first to third joint portions 122 to 124 are configured by airtightly laminating the ends of the covering portion 121 integrally by thermal bonding.

In addition, the first and second end caps 125 and 126 are

It is provided in the form of a cap that forms a receiving groove of an inner mold corresponding to both ends of the bumper sensor by molding soft PVC,

For a bumper sensor having various functions such as sealing properties and high durability compared to the conventional sewing-type cover by configuring both ends of the bumper sensor to be fitted into the receiving groove by elastic contraction of the buffer part 113 and the covering part 121 It is possible to achieve the purpose of providing a cover.

The present invention provides a cover for a bumper sensor with a simple manufacturing process and high productivity by configuring a cover for a bumper sensor in a heat-adhesive form different from a conventional sewing-type cover for a cover that forms the outer skin of a bumper sensor installed in various industrial vehicles.

In addition, the cover of the present invention has an advantage of having a beautiful appearance and minimizing deformation and damage to have high durability compared to the cover of the prior art in which a popping phenomenon frequently occurred in the sewing part of the cover due to an external impact applied to the bumper sensor. .

In addition, since the present invention can be completely sealed by the cover, it promotes moisture-proof, dust-proof, and waterproof performance to significantly reduce the malfunction or failure rate, and can be applied to industrial vehicles that are put into clean rooms, high-humidity, high-dust workshops, etc. have.

1 is a perspective view of a cover for a bumper sensor according to the present invention.
Figure 2 is an exploded perspective view of a cover for a bumper sensor according to the present invention.
3 is an internal structural diagram of a cover for a bumper sensor according to the present invention.
Fig. 4 is a cross-sectional view taken along line AA of Fig. 1;
Figure 5 is an exemplary view of the use state of the cover for a bumper sensor according to the present invention.
Figure 6 is a perspective view of a sewing-type cover according to the prior art.

Hereinafter, the configuration and operation of the cover for a bumper sensor according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the following description, detailed descriptions of parts that can be easily implemented by those skilled in the art may be omitted. In addition, since the following description is given by way of preferred embodiments of the present invention, the present invention is not limited by the following examples, and it is natural that various modifications may be provided within the scope without departing from the scope of the present invention. will be.

1 is a perspective view of a cover for a bumper sensor according to the present invention, FIG. 2 is an exploded perspective view of a cover for a bumper sensor according to the present invention, FIG. 3 is an internal structural diagram of the cover for a bumper sensor according to the present invention, FIG. 4 is FIG. 1 A cross-sectional view taken along the line AA of, Figure 5 is an exemplary view of the use state of the cover for a bumper sensor according to the present invention, Figure 6 is a perspective view of a sewing-type cover according to the prior art.

The cover for a bumper sensor to which the technology of the present invention is applied comprises a cover that forms the outer skin of the bumper sensor installed on the bumper of various industrial transport vehicles and systems, such as unmanned transport vehicles, in a form different from that of the conventional sewing cover, thereby improving sealing properties and high efficiency. Note that it relates to a cover for a bumper sensor having durability.

For this purpose, the cover for a bumper sensor of the present invention includes a base frame 111 installed on a vehicle body, a tape switch 112 mounted on the front of the base frame 111 , and a bumper sensor on which the buffer unit 113 is mounted. It constitutes a cover for a bumper sensor provided to cover the , and specifically is as follows.

As shown in FIG. 3, the bumper sensor to which the cover of the present invention is applied includes a base frame 111 installed on a vehicle body, a shock absorber 113 for absorbing shock, and a tape switch 112 for detecting an impact. to configure

The base frame 111 is formed in a metal plate shape so that the bumper sensor is installed on the vehicle body by a predetermined fastening means.

The buffer part 113 is formed by molding an elastic material such as soft urethane or sponge to a predetermined thickness and attached to the front surface of the base frame 111 with the tape switch 112 interposed therebetween.

The tape switch 112 is mounted along the longitudinal direction of the base frame 111 from the inside of the buffer part 113 to detect an impact when an operating load is applied to the front surface of the buffer part 113 .

The tape switch 112 is composed of both electrode tapes made of a conductive material and an insulating pad provided therebetween, so that when an external shock or pressure is applied, both electrodes pass through the insulating pad and become conductive to sense the operating load. make up The tape switch 112 is covered with an insulating PVC material, and a cable for supplying power is connected at one end to the outside of the base frame 111 .

The cover of the present invention has a covering part as shown in FIGS. 1 to 2 so as to integrally and stably cover the outside of the base frame 111 and the buffer part 113 exposed to the outside among the configurations of the bumper sensor as described above. 121, first to third joint portions 122 to 124, and first and second end caps 125 and 126.

The covering portion 121 is formed on a sheet made of a synthetic resin material having elasticity and thermoplasticity to cover the base frame or the buffer portions 111 to 113 integrally.

The covering portion 121 is provided on a sheet developed to cover the entire outer shape of the bumper sensor, with a surface covering the front surface of the buffer unit 113 as a front surface and covering the rear surface of the base frame 111 . It is provided as a rear surface and is provided as a continuous unit with the upper, lower, and left and right surfaces. The covering part 121 may have various colors or patterns according to the installation position and use of the bumper sensor.

The first to third joint portions 122 to 124 are configured to overlap and bond the ends of the covering portion 121 on the rear surface of the base frame 111 and on both sides of the buffer portion 113, respectively. .

The first to third joint portions 122 to 124 are configured by airtightly laminating the ends of the covering portion 121 made of a thermoplastic material integrally by thermal bonding.

The first to third joint portions 122 to 124 have some changes in hardness and elasticity compared to the covering portion 121 in the process of being formed by thermal bonding. Since the rear surface of the base frame 111 is provided in contact with the vehicle body during installation, the first joint portion 122 avoids the vicinity of the buffer portion 113 on which the operating load acts, thereby avoiding the covering portion on the rear surface of the base frame 111 . It is formed by joining both ends of (121).

A predetermined through hole is formed in the first junction part 122 to connect the cable of the tape switch 112 embedded between the base frame 111 and the buffer part 113 to the vehicle body.

The second and third joint portions 123 and 124 are prevented from being exposed to the outside by first and second end caps 125 and 126 to be described later on both sides of the buffer portion 113 of the base frame 111. It is formed by bonding both ends of the abdomen (121).

The first and second end caps 125 and 126 accommodate both ends of the bumper sensor covered with the covering portion 121 , and corners of the second and third bonding portions 123 and 124 and the covering portion 121 . prepared to finish.

The bumper sensor to which the cover of the present invention is applied is mounted on the front side of the base frame 111 installed on the vehicle body with a buffer part 113 of a certain thickness and protrudes forward, the first end cap and the second end cap ( 125 and 126 are provided to cover both side portions and corners where the second and third joint portions 123 and 124 are provided.

The first and second end caps 125 and 126 are provided in the form of caps that are formed with inner mold receiving grooves corresponding to both ends of the bumper sensor by molding soft PVC or 3D printing. The outer shape of the first and second end caps 125 and 126 and the inner shape of the receiving groove are formed to correspond to the outer shape of the buffer part 113 .

The first and second end caps 125 and 126 are configured to fit both ends of the bumper sensor into the receiving grooves by elastic contraction of the cushioning part 113 and the covering part 121 . It is preferable to configure so that the frictional force between the covering portion 121 and the materials of the first and second end caps 125 and 126 is at a certain level in order to secure the adhesion between the covering portion 121 and the receiving groove in contact. .

The cover for a bumper sensor to which the technology of the present invention is applied having the configuration as described above includes the covering portion 121 and the first to third joint portions 122 to 124, the first end cap and the second end cap ( 125 and 126) to provide a cover for the bumper sensor, as shown in FIG. 5, to stably cover the entire front of the bumper sensor when the bumper sensor is installed and used in various industrial vehicles and systems.

Accordingly, the present invention has the advantage of simplifying the manufacturing process and improving productivity compared to manufacturing the conventional sewing-type cover by connecting a seam line along the edge of the bumper sensor using a plurality of pieces.

In particular, in the case of the bumper sensor cover of the present invention, even if an external impact is repeatedly applied to the bumper sensor, a burst or abrasion phenomenon is induced in the sewing part, particularly the corner part, like the cover of the prior art as in FIG. There is an advantage of having high durability by completely excluding problems such as rupture and exposure of the buffer part 113 and scattering of dust to the outside, and minimizing deformation and damage.

In addition, since the cover of the present invention can be completely sealed, it promotes moisture-proof, dust-proof, and waterproof performance, significantly reducing the malfunction or failure rate of the bumper sensor, and can be applied to industrial vehicles that are put into clean rooms, high-humidity, high-dust workshops, etc. There are various advantages such as

111: base frame
112: tape switch
113: buffer
121: covering part
122-124: first junction ~ third junction
125, 126: first end cap, second end cap
127,128: accommodation home

Claims (2)

The base frame 111 installed on the vehicle body, the tape switch 112 mounted on the front of the base frame 111, and the bumper sensor cover provided to cover the exterior of the bumper sensor mounted with the buffer unit 113. in,
A covering portion 121 formed on a sheet made of a synthetic resin material having elasticity and thermoplasticity to cover the base frame 111 to the buffer portion 113 integrally;
First to third junctions 122 to 124 that overlap and join the ends of the covering part 121 on the rear side of the base frame 111 and on both sides of the buffer part 113, respectively;
First and second end caps 125 and 126 for accommodating both ends of the bumper sensor covered with the covering portion 121 to close the edges of the second and third bonding portions 123 and 124 and the covering portion 121 . ), including
The first to third joint portions 122 to 124 are integrally and airtightly laminated to the ends of the covering portion 121 by thermal bonding, so that there is no seam line. The method of claim 1,
The first and second end caps 125 and 126 are
Provided in the form of a cap that forms a receiving groove of an inner mold corresponding to both ends of the bumper sensor by molding soft PVC or 3D printing,
A cover for a bumper sensor, characterized in that it is configured to fit both ends of the bumper sensor into the receiving groove by elastic contraction of the buffer part 113 and the cover part 121 .

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