Abstract:
A tool suspension plate has a base, at last one fastening device formed on the base, and a slat detachably mounted on the base to cross over the at least one fastening device and to secure at least one screwdriver on the base. Each fastening device has a clamping element adapted to clamp a part of a screwdriver and a supporting element adapted to support a handle of the screwdriver. Thereby, the screwdriver is firmly secured on the tool suspension plate. Furthermore, by in cooperation with the slat, the tool suspension plate has excellent thief-proof, displaying and retaining effects.

Description:
BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   The present invention relates to a tool suspension plate, and more particularly a tool suspension plate adapted to hold and display screwdrivers 
   2. Description of Related Art 
   With reference to  FIGS. 10 and 11 , a conventional tool suspension rack is adapted to hold a wrench ( 80 ) and comprises a suspension plate ( 70 ) with a bottom and a bracket ( 72 ) detachably secured on the suspension plate ( 70 ). Two slits ( 701 ) are defined in the suspension plate ( 70 ) respectively at two sides near the bottom and two first apertures ( 702 ) are defined in the suspension plate ( 70 ) close to the slits ( 701 ). The bracket ( 72 ) is a U-shaped frame with a recess (not numbered) and has two connecting protrusions ( 721 ) formed on two oppositely distal ends of the bracket ( 72 ) to abut on the suspension plate ( 70 ). Each connecting protrusion ( 721 ) has a hook ( 722 ) correspondingly and detachably engaged with one corresponding slit ( 701 ) of the suspension plate ( 70 ). Each connecting protrusion ( 721 ) further has a second aperture ( 723 ) aligning with the first aperture ( 702 ). Thereby, a locking pin ( 74 ) is enabled to penetrate the first and second apertures ( 702 , 723 ) to fasten the bracket ( 72 ) and the suspension plate ( 70 ) together. 
   The wrench ( 80 ) is held on the tool suspension rack by resting a first head end of the tool on the bracket ( 72 ) via the recess and usually has a second head end connected by a slender handle to the first head end (not shown) that avoids the wrench ( 80 ) from being pulled upward to escape from the tool suspension rack. Therefore, once the locking pins ( 74 ) are attached on the bracket ( 74 ) and the suspension plate ( 70 ), the wrench ( 80 ) is not detachable to prevent shoplifting. However, the retailer can remove the locking pins ( 74 ) to allow a customer to inspect the wrench prior to purchase. However, for other tools without two large ends separated by a slender portion, such as screwdriver, it is not suitable to use such kind of tool suspension rack. This is because although the screwdriver has a large handle at one end that can rest on the bracket it has only a straight shaft formed at the other end that means the screwdriver can exit through the recess. Therefore, the screwdriver is easily stolen from the tool suspension rack. 
   Additionally, when a screwdriver is mounted on the conventional tool suspension rack, the straight shaft extending out of the bracket ( 72 ) swings too easily on the rack, such as when someone passes by, and the screwdriver may scratch and lever against surrounding objects. Therefore, the conventional suspension rack is easily broken at joints between the bracket ( 72 ) and the suspension plate ( 70 ) when a screwdriver is fitted in it. 
   In order to make a suitable tool suspension structure for screwdrivers, the present invention provides a tool suspension plate to conveniently retain and display a screwdriver set. 
   SUMMARY OF THE INVENTION 
   A main objective of the invention is to provide a tool suspension plate for screwdrivers that has theft-proof, displaying, and retaining effects. 
   Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is an exploded perspective view of a first embodiment of a tool suspension plate in accordance with the present invention; 
       FIG. 2  is a perspective view of the tool suspension plate in accordance with  FIG. 1 , wherein the tool suspension plate is assembled; 
       FIG. 3  is a top plane view of the tool suspension plate in accordance with  FIG. 1 , wherein screwdrivers are mounted on the tool suspension plate; 
       FIG. 3A  is a cross-sectional side plane view of a clamping element along line  3 A— 3 A in  FIG. 3 ; 
       FIG. 3B  is a cross-sectional side plane view of a loop along line  3 B— 3 B in  FIG. 3 ; 
       FIG. 4  is an operational side plane view of detaching a screwdriver from the tool suspension plate; 
       FIG. 5  is an exploded perspective view of a second embodiment of the tool suspension plate; 
       FIG. 6  is a perspective view of the second embodiment of the tool suspension plate in accordance with  FIG. 5 , wherein the tool suspension plate is assembled; 
       FIG. 7  is a side plane view of the second embodiment of the tool suspension plate, wherein a screwdriver is mounted on the tool suspension plate; 
       FIG. 7A  is a cross-sectional side plane view of the clamping element along line  7 A— 7 A in  FIG. 7 ; 
       FIG. 8  is an operational cross-sectional side plane view of detaching the screwdriver from the tool suspension plate; 
       FIG. 9  is a partially enlarged exploded view of a fastening means between a plate and a thief-proof slat of the tool suspension plate; 
       FIG. 10  is an exploded perspective view of a conventional tool suspension rack for a wrench in accordance with the prior art; and 
       FIG. 11  is a perspective view of the conventional tool suspension rack, wherein the conventional tool suspension rack is assembled. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
   The tool suspension plate in accordance with the present invention comprises a base, at least one clamping element, at least one supporting element, and a slat detachably mounted on the plate and crossing at least one screwdriver to provide a thief-proof efficiency. Because each clamping element and each supporting element have versatile modifications in shapes and positions, two preferred embodiments are illustrated as the following. 
   With reference to  FIGS. 1 and 3 , a first embodiment of tool suspension plate has a screwdriver set placed horizontally and arranged one by one in a vertical direction. The first embodiment of the tool suspension plate comprises a base ( 10 ), multiple fastening devices (not numbered) formed on the base ( 10 ), and a slat ( 20 ) detachably mounted on the base ( 10 ) and crossing the multiple fastening devices. 
   The base ( 10 ) is a rectangular plate with a top and has two suspension holes ( 12 ) defined in the plate to suspend the base ( 10 ) on a desired place by means of hook. 
   Each fastening device is adapted to hold a single screwdriver and is composed of a clamping element ( 30 ) and a supporting element ( 40 ). The supporting element ( 40 ) is a U-shaped frame (not numbered) with an end face (not numbered), an opening (not numbered) and two opposite sides closely meeting with a handle neck of the screwdriver, and is formed near a side edge of the base ( 10 ) such that the opening is close to the side edge. The U-shaped frame has an inward portion formed at each opposite side to further closely mate with the outlines of the handle neck of the screwdriver and to avoid the screwdriver sliding out horizontally. A cutout ( 42 ) is formed in the end face of the U-shaped frame for resting a shaft of the screwdriver thereon. The clamping element ( 30 ) is formed on the base ( 10 ) and is composed of two arms ( 32 ) erecting on the base ( 10 ) to construct a channel (not numbered) between the two arms ( 32 ). The channel is aligned to the cutout ( 42 ). Each arm ( 32 ) has an inner lip ( 322 ) at a distal end thereof and a distance between the lips ( 322 ) is smaller than an outer diameter of the shaft of the screwdriver to firmly clamp the screwdriver in the channel once the shaft has been urged through the lips ( 322 ) as shown in  FIG. 3A . Additionally, each fastening device further comprises a loop ( 50 ) formed on the base ( 10 ). The loop ( 50 ) has a through hole ( 52 ) aligning to the channel of the clamping element ( 30 ) and the cutout ( 42 ) on the supporting element ( 40 ) and adapted to hold a tail end of the shaft of the screwdriver as shown in  FIG. 3B . Moreover, the loop ( 50 ) further has a bottom and a dent (not shown) formed on the bottom to adapt to closely meet sharp angles of some angular shafts. By holding the tail end of the shaft with the loop ( 50 ), the screwdriver is not easily swung and can be kept steady on the tool suspension plate. 
   The slat ( 20 ) longitudinally crosses the multiple fastening devices and is basically a U-shaped bracket with two ends. A locking sheet ( 22 ) is formed on each end of the U-shaped bracket and has a hole ( 222 ) defined in the locking sheet ( 22 ). With further reference to  FIG. 9 , two end brackets ( 24 ) are formed at two side edges of the base ( 10 ) to engage with the corresponding locking sheet ( 22 ). Each end bracket ( 24 ) is an L-shaped frame on the base ( 10 ) and has a short plate (not numbered), a long plate (not numbered), and a locking hole ( 242 ) defined in the long plate to align with the hole ( 222 ) on the locking sheet ( 22 ). The short plate of the L-shaped frame abuts the base ( 10 ) at edge and the long plate of the L-shaped frame is parallel with the base ( 10 ) and extending inward. Thereby, a slit (not numbered) is constructed between the long plate and the base ( 10 ) for accommodating the locking sheet ( 22 ). When the locking sheet ( 22 ) is inserted in the slit, a locking pin ( 26 ) penetrates the locking hole ( 242 ) of each end bracket ( 24 ) and the hole ( 222 ) on each corresponding locking sheet ( 22 ) to fasten the slat ( 20 ) on the base ( 10 ). Preferably, the slat ( 20 ) is attached on the base to cross over handles of the screwdrivers. 
   With reference to  FIG. 4 , when the screwdriver is to be detached from the tool suspension plate, the slat ( 20 ) is detached from the base ( 10 ) first. Then, the screwdriver horizontally swung out away from the base ( 10 ) to separate the handle from the supporting element ( 40 ) until the shaft is also detached from the clamping element ( 30 ). Lastly, the screwdriver is horizontally pulled outward to make shaft completely separate from the loop ( 50 ). 
   With reference to  FIGS. 5 and 7 , a second embodiment of the tool suspension plate has the screwdriver set placed vertically and arranged one by one in transversal direction. The second embodiment of the tool suspension plate comprises a base ( 10   a ) with a flange (not numbered), multiple fastening devices (not numbered) formed on then base ( 10   a ), and a slat ( 20   a ) detachably mounted on the base ( 10   a ) and crossing the multiple fastening device. 
   Each fastening device is adapted to hold a single screwdriver and is composed of a clamping element ( 30   a ) and a supporting element ( 40   a ). The supporting element ( 40   a ) is performed by the flange with multiple recess ( 42   a ) defined in the flange. When the screwdriver mounted on the tool suspension plate, a shaft of the screwdriver penetrates one corresponding recess ( 42   a ) and a handle of the screwdriver is rest on the supporting element ( 40   a ). The clamping element ( 30   a ) is formed above the supporting element ( 40   a ) on the base ( 10   a ) and is composed of two arms ( 32   a ) erecting on the base ( 10   a ) to construct a channel (not numbered) between the two arms ( 32   a ). The channel is aligned to the recess ( 42   a ). With further reference to  FIG. 7A , each arm ( 32   a ) has an inner lip ( 322   a ) at a distal end thereof and a distance between the lips ( 322   a ) is smaller than an outer diameter of the handle of the screwdriver to firmly clamp the screwdriver in the channel once the shaft has been urged through the lips ( 322   a ). Additionally, each fastening device further comprises a positioning rest ( 60   a ) formed between the clamping element ( 30   a ) and the supporting element ( 40   a ) on the base ( 10   a ). The positioning rest ( 60   a ) has a distal end and a curved face (not numbered) formed on the distal end for resting a handle neck of the screwdriver to provide an additional positioning efficiency. 
   The slat ( 20   a ) transversally crosses the multiple fastening devices and has the same configuration and engaging means to the base ( 10   a ) with the one described in the first embodiment. Therefore, redundant description of the slat ( 20   a ) is obviated here. However, the supporting element ( 40   a ) has no locking efficiency to avoid the screwdriver from pulling along the base ( 10   a ) as the inward portion of the U-shaped frame does. Therefore, a stop plate ( 62   a ) is formed above the clamping element ( 30   a ) to abut a handle top of the screwdriver to avoid the screwdriver pulling upward and out along the base ( 10   a ). 
   With reference to  FIG. 8 , when the screwdriver is to be detached from the tool suspension plate, the slat ( 20   a ) is detached from the base ( 10 ) first. Then, the screwdriver is pushed out to separate the handle from the clamping element ( 30   a ) and the supporting element ( 40   a ). Thereby, the screwdriver is completely separated from the tool suspension plate. 
   According to the foregoing description, the clamping element firmly clamps parts of the screwdriver and the supporting element supports the handle of the screwdriver. By both elements, each screwdriver in the screwdriver set enables to be firmly and stably held on the tool suspension plate. Further in cooperation with the slat, the tool suspension plate has a thief-proof efficiency to demonstrate the screwdriver set in a safe way. 
   Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.